CN102837401B - Plastic forming mould having functional module - Google Patents
Plastic forming mould having functional module Download PDFInfo
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- CN102837401B CN102837401B CN201210277420.5A CN201210277420A CN102837401B CN 102837401 B CN102837401 B CN 102837401B CN 201210277420 A CN201210277420 A CN 201210277420A CN 102837401 B CN102837401 B CN 102837401B
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Abstract
The invention relates to a mould, and specifically relates to a plastic forming mould having functional module. The plastic forming mould comprises an upper mould and a lower mould, wherein an upper mould core and a lower mould core are fixedly installed in the upper mould and the lower mould respectively; and a mould cavity is arranged between the upper mould core and the lower mould core. The plastic forming mould also comprises at least one functional module and a least one first driving module. At least one first installing hole is disposed on the upper mould and/or the lower mould. Each functional module is installed in one first installing hole and comprises a working part and a connecting part, wherein the working part is mounted on the connecting part and contacts with the mould cavity; the connecting part is connected with the first driving module; and the first driving module can drive the functional module to slide in the first installing hole; and the working part is a cutting knife, a punch, an insert, a core-pulling block, a template or a baffle plate. The plastic forming mould can complete processing procedures needed after products are demoulded in the injection moulding process, thereby reducing production cost effectively and eliminating product defects.
Description
Technical field
The present invention relates to a kind of mould, particularly relate to a kind of plastic forming die.
Background technology
At present, the production craft step of thermoplasticity plastic product mainly comprises: injection machine HTHP by material plasticizing melting, injection machine by the material injection of melting in closed mould product die cavity, injection machine implements to molten condition product in mold cavity pressurize, several steps such as taking out product is opened in the cooling of product in mould, mould.
Injecting products often there will be following problem in the production process of each operation: 1, the edge-gated and overlapping edges cast gate of plastic product cannot be separated automatically with plastic product; 2, for the plastic product being with porose or groove, in injection process, the material of melting can flow through from the both sides of hole or groove, and converge mutually at the rear portion of hole or groove, due to the reduction of temperature and pressure, material after converging can not merge fully mutually, just in plastic product, produces weld bond, and the outward appearance that weld bond both have impact on product also reduces the intensity of welding position product; If weld bond appears at the less position of plastic product cross section, then very easily rupture in this position; 3, owing to expanding with heat and contract with cold, position thicker in plastic product can produce shrink mark or hollow bubble, affects outward appearance and the intensity of product; 4, in plastic product, in the process of injection material, from sprue gate more away to bear the injection pressure that injection machine transmits less at position, make to produce pressure differential in injection mold product die cavity, plastic product causes due to pressure differential various bad (size variation and plastic product distortion etc.); 5, the bad meeting of the exhaust of injection mold causes in plastic product and occurs being stranded gas or burning phenomenon, affects outward appearance and the intensity of product;
In the process that injecting products is produced, in different operations, there will be the one of the problems referred to above, or occur above-mentioned several problem simultaneously, and can only in de-molding injection molded products post processing, production cost is higher, even some problem, cannot solve in subsequent handling, cause product defects.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of plastic forming die with functional module, can complete, effectively reducing production cost by needing the treatment process after de-molding injection molded products in injection moulding process, eliminates product defects.
A kind of plastic forming die with functional module of the present invention, comprise patrix, counterdie, upper mold core and lower mold core is installed with respectively in upper die and lower die, die cavity is provided with between upper mold core and lower mold core, this device also comprises at least one functional module and at least one first driver module, upper mold core and/or lower mold core offer at least one first installing hole, each first installing hole is all communicated with die cavity, each functional module is installed in first installing hole, each functional module includes operate portions and connecting portion, operate portions is fixedly mounted on connecting portion, operate portions can contact with die cavity, first driver module can drive functional module slide in the first installing hole, operate portions is cutting knife, drift, insert, to loose core block, template or baffle plate.
A kind of plastic forming die with functional module of the present invention, wherein said first driver module comprises first piston formula cylinder block, first cylinder body installing hole, first hydraulic oil pipeline and the first cylinder body resetting means, first cylinder body installing hole and the first hydraulic oil pipeline are opened on patrix and/or counterdie, one end of first cylinder body installing hole is connected with the first installing hole, the other end of the first cylinder body installing hole is connected with the first hydraulic oil pipeline, first piston formula cylinder block is arranged in the first cylinder body installing hole, the outer circumference surface of first piston formula cylinder block and the inwall of the first cylinder body installing hole are sealed by O-ring seal, first piston formula cylinder block is fixedly connected with connecting portion, first cylinder body resetting means can drive first piston formula cylinder block to reset.
A kind of plastic forming die with functional module of the present invention, wherein said each first installing hole is stepped hole, and connecting portion is in the macropore of the first installing hole, and operate portions contacts with die cavity through after the aperture of the first installing hole.
A kind of plastic forming die with functional module of the present invention, wherein said operate portions is cutting knife, and cutting knife is corresponding with the junction of die cavity and runner cast gate.By operate portions is set to cutting knife, after the pressurize of injecting fused materials and certain hour through injection machine in mould, controlling functions module action, realizes automatic hot cutting in mould, cuts off cast gate, reduces human cost, improving product yield.The type wherein cutting off cast gate comprises tab gate etc. under edge-gated, overlapping edges cast gate, edge.
A kind of plastic forming die with functional module of the present invention, wherein said operate portions is drift, and drift is corresponding with the blind hole on the moulding in die cavity or groove.Further, this device also comprises at least one briquetting and at least one briquetting driver module, operate portions is drift, drift is corresponding with the through hole on the moulding in die cavity, the relative lower mold core of upper mold core or lower mold core with the first installing hole place or upper mold core offer the second installing hole, second installing hole is communicated with die cavity, each briquetting is installed in the second installing hole, briquetting is relative with the position of drift, each briquetting all fits with the surface of injecting products in die cavity, and briquetting driver module can drive briquetting to slide in the second installing hole.By operate portions is set to drift, after material injection moulding completes by injection machine, before pressurize operation starts, controlling functions module action, realizes product punching in mould, avoids in injection process, the material of melting flows through from the both sides of hole or groove, and converge mutually at the rear portion of hole or groove, eliminate shaping weld bond, ensure that outward appearance and the intensity of product.
A kind of plastic forming die with functional module of the present invention, wherein said operate portions is insert, die cavity is provided with at least one reserved material region, and each reserved material region is all corresponding with the position moulding in die cavity producing shrink mark or hollow bubble, with reserved, insert expects that region contacts.By operate portions is set to insert, after in injection machine injection and mould, pressurize operation completes, controlling functions module action, express material in reserved material region is produced on injecting products the position of shrink mark or hollow bubble, realize local input of holding pressure in mould, effectively can eliminate product local appearance shrink mark and inner hollow bubble.
A kind of plastic forming die with functional module of the present invention, wherein said operate portions is insert, die cavity is provided with at least one reserved material region, and each reserved material region is corresponding with the moulding in die cavity producing the position that pressure differential makes a variation, and insert expects that region contacts with reserving.By operate portions is set to insert, after in injection machine injection and mould, pressurize operation completes, controlling functions module action, express material in reserved material region is born the lower position of injection machine injection pressure on injecting products, this position is made to produce pressure under the extruding of functional module, reach the state of the pressure relative equilibrium of all sites on whole product, reach the object of stable precisely control product size.
A kind of plastic forming die with functional module of the present invention, wherein said operate portions is insert, die cavity is provided with at least one reserved material region, each reserved material region with the moulding in die cavity produces be stranded gas or the position of burning corresponding, insert expects that region contacts with reserving.By operate portions is set to insert, after injection machine has been injected, controlling functions module action, by the inside of the express material in reserved material region to injecting products, by gas displacement inner or surperficial for moulding out, avoid gas superheat and cause plastic product to burn, affecting outward appearance and the intensity of product.
A kind of plastic forming die with functional module of the present invention, wherein said operate portions is insert, and insert is corresponding with the position of a runner, and insert can close described runner wholly or in part.By operate portions is set to insert, before injection machine starts material injection, controlling functions module action, runner cast gate on the other side is closed by functional module wholly or in part, then the material of melting injects in the die cavity of injection mold with certain pressure and speed by injection machine, by controlling the aperture size of runner cast gate, just can control the flowing sequential of the fused materials that different runner cast gate enters in mould, thus realize adjustment weld bond position.
A kind of plastic forming die with functional module of the present invention, wherein said operate portions is block of loosing core, and loose core block and injecting products need the position of loosing core corresponding, and each first installing hole is all oblique or laterally disposed.By workpiece is set to block of loosing core, and the first installing hole is oblique or laterally disposed, before injection machine injection fused materials, controlling functions module action, the block that makes to loose core enters in die cavity, then by injection machine, fused materials is injected the die cavity of mould, pressurize after material injection completes, cooling, finally control block of loosing core and exit, make block homing of loosing core, realize die side to or angled core-pulling, simplify mould structure, reduce die cost.
A kind of plastic forming die with functional module of the present invention, wherein said operate portions is template, the side that template contacts with die cavity is provided with logo, in the shape of the side that template contacts with die cavity and die cavity, the shape of injection product surface is consistent, and the position that template and injecting products are provided with logo is corresponding.By workpiece being set to the template with logo, injection moulding logo on workpiece can be realized, simplifying mould structure, reduce die cost.
A kind of plastic forming die with functional module of the present invention, wherein said functional module and the first driver module are more than 2 or 2, operate portions is baffle plate, and each baffle plate is corresponding with a runner cast gate, and each baffle plate all can close corresponding runner cast gate.By operate portions is set to baffle plate, before injection machine injection fused materials, controlling functions module action, makes baffle plate closed flow cast gate, then injection machine injection is started, after injection molding channel inside is full of fused materials, then control baffle plate homing, runner cast gate is opened, complete injection machine injection, take this structure can avoid when flow channel length difference is larger, the unbalanced situation of each position briquetting pressure of product, thus reach the object of stable precisely control product size.
A kind of plastic forming die difference from prior art with functional module of the present invention is that the present invention arranges functional module and the first driver module in mould, the operate portions of functional module contacts with die cavity, the connecting portion of functional module is connected with the first driver module, first driver module drive functional module is slided in the first installing hole, operate portions is cutting knife, drift, insert, to loose core block, template or baffle plate, by the motion of the operate portions of the first driver module drive functional module, can by the separation after the moulding demoulding, the operations such as stamping-out complete in product injection moulding process, cost can be effectively reduced, and by controlling the action of operate portions, the weld bond that workpiece occurs in injection moulding process can be eliminated, shrink mark, hollow bubble, tired gas and the defect such as to burn.
Below in conjunction with accompanying drawing, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is a kind of front sectional view (before the separation of overlapping edges cast gate) with the embodiment 1 of the plastic forming die of functional module of the present invention;
Fig. 2 is a kind of front sectional view (overlapping edges cast gate is separated rear) with the embodiment 1 of the plastic forming die of functional module of the present invention;
Fig. 3 is a kind of front sectional view (before tab gate is separated under edge) with the embodiment 1 of the plastic forming die of functional module of the present invention;
Fig. 4 is a kind of front sectional view (after tab gate is separated under edge) with the embodiment 1 of the plastic forming die of functional module of the present invention;
Fig. 5 is a kind of front sectional view (before forming groove) with the embodiment 2 of the plastic forming die of functional module of the present invention;
Fig. 6 is a kind of front sectional view (after forming groove) with the embodiment 2 of the plastic forming die of functional module of the present invention;
Fig. 7 is a kind of front sectional view (before punching) with the embodiment 3 of the plastic forming die of functional module of the present invention;
Fig. 8 is a kind of front sectional view (after punching) with the embodiment 3 of the plastic forming die of functional module of the present invention;
Fig. 9 is a kind of front sectional view (before removing shrink mark or hollow bubble) with the embodiment 4 of the plastic forming die of functional module of the present invention;
Figure 10 is a kind of front sectional view (after removing shrink mark or hollow bubble) with the embodiment 4 of the plastic forming die of functional module of the present invention;
Figure 11 is a kind of front sectional view (before local pressure adjustment) with the embodiment 5 of the plastic forming die of functional module of the present invention;
Figure 12 is a kind of front sectional view (after local pressure adjustment) with the embodiment 5 of the plastic forming die of functional module of the present invention;
Figure 13 is a kind of front sectional view (before insert action) with the embodiment 6 of the plastic forming die of functional module of the present invention;
Figure 14 is a kind of front sectional view (remove tired gas or burn rear) with the embodiment 6 of the plastic forming die of functional module of the present invention;
Figure 15 is a kind of front sectional view (close or before partially enclosed runner) with the embodiment 7 of the plastic forming die of functional module of the present invention;
Figure 16 is a kind of front sectional view (close or after partially enclosed runner) with the embodiment 7 of the plastic forming die of functional module of the present invention;
Figure 17 is a kind of front sectional view (angled core-pulling block is positioned at die cavity) with the embodiment 8 of the plastic forming die of functional module of the present invention;
Figure 18 is a kind of front sectional view (it is outer that angled core-pulling block is positioned at die cavity) with the embodiment 8 of the plastic forming die of functional module of the present invention;
Figure 19 is a kind of front sectional view (side core-pulling block is positioned at die cavity) with the embodiment 8 of the plastic forming die of functional module of the present invention;
Figure 20 is a kind of front sectional view (it is outer that side core-pulling block is positioned at die cavity) with the embodiment 8 of the plastic forming die of functional module of the present invention;
Figure 21 is a kind of front sectional view (before forming logo) with the embodiment 9 of the plastic forming die of functional module of the present invention;
Figure 22 is a kind of front sectional view (formation logo) with the embodiment 9 of the plastic forming die of functional module of the present invention;
Figure 23 is a kind of front sectional view (baffle plate closed flow cast gate) with the embodiment 10 of the plastic forming die of functional module of the present invention;
Figure 24 is a kind of front sectional view (runner cast gate is opened) with the embodiment 10 of the plastic forming die of functional module of the present invention;
Figure 25 is a kind of top view with the first piston formula cylinder block of the plastic forming die of functional module of the present invention;
Figure 26 is a kind of front view with the first piston formula cylinder block of the plastic forming die of functional module of the present invention;
Figure 27 is a kind of front view (the first cylinder body resetting means is stage clip) with the first driver module of the plastic forming die of functional module of the present invention;
Figure 28 is a kind of front view (cylinder body adopts hydraulic oil to reset) with the first driver module of the plastic forming die of functional module of the present invention.
Detailed description of the invention
Embodiment 1:
As shown in Figure 1, a kind of plastic forming die with functional module of the present invention comprises patrix 1, counterdie 2, functional module 6 and the first driver module 7, upper mold core 3 and lower mold core 4 is installed with bolt respectively in patrix 1 and counterdie 2, die cavity 5 is provided with between upper mold core 3 and lower mold core 4, lower mold core 4 offers first installing hole 8, first installing hole 8 is stepped hole, its axis vertical is arranged, the macropore of the first installing hole 8 is positioned at the below of aperture, first installing hole 8 is communicated with die cavity 5, functional module 6 is arranged in the first installing hole 8, functional module 6 comprises operate portions and connecting portion 9, operate portions is fixedly mounted on connecting portion 9, the operate portions of the functional module 6 of the present embodiment is cutting knife 13, cutting knife 13 and connecting portion 9 are formed in one, connecting portion 9 is positioned at the macropore of the first installing hole 8, the outer circumference surface of connecting portion 9 contacts with the hole wall of the macropore of the first installing hole 8, be matched in clearance between the two, cutting knife 13 is through corresponding with the junction of die cavity 5 and runner cast gate 14 after the aperture of the first installing hole 8, also be matched in clearance between cutting knife 13 and the aperture of the first installing hole 8.Connecting portion 9 is connected with the first driver module 7, and the first driver module 7 comprises first piston formula cylinder block 10, first cylinder body installing hole 11, first hydraulic oil pipeline 12 and the first cylinder body resetting means (not shown in figure 1).Wherein the first cylinder body installing hole 11 and the first hydraulic oil pipeline 12 are opened on counterdie 2, first cylinder body installing hole 11 is vertically arranged, the upper end of the first cylinder body installing hole 11 is connected with the first installing hole 8, the lower end of the first cylinder body installing hole 11 is connected with the first hydraulic oil pipeline 12, first piston formula cylinder block 10 is arranged in the first cylinder body installing hole 11, in conjunction with Figure 25, shown in Figure 26, the outer circumference surface of first piston formula cylinder block 10 and the inwall of the first cylinder body installing hole 11 are sealed by O-ring seal 30, the upper surface of first piston formula cylinder block 10 is connected with the lower surface of connecting portion 9, first cylinder body resetting means can drive first piston formula cylinder block 10 to reset, shown in Figure 27, in the present embodiment, the first cylinder body resetting means adopts four stage clips 28, the step surface of the first installing hole 8 offers four stage clip installing holes 29, described stage clip installing hole 29 is evenly distributed in around the aperture of the first installing hole 8, every root stage clip 28 is installed in a stage clip installing hole 29, the lower surface of stage clip 28 is pressed on the upper surface of connecting portion 9.
The present invention is a kind of has the plastic forming die of functional module in use, as shown in Figure 2, first the entrance of high voltage power oil sources (not shown) with the first hydraulic oil pipeline 12 is connected, then material is added in injection machine (not shown), injection machine heating makes material melts, injection mould closing, upper mold core 3 and lower mold core 4 are fitted, injection machine spout is communicated with for closed cavity with the runner cast gate 14 on injection mold and die cavity 5, then by injection machine, the material of melting is injected in the die cavity 5 of injection mold with certain pressure and speed, through injection machine injection and certain hour pressurize, control input pressure oil in the first hydraulic oil pipeline 12 that high voltage power oil sources offers to mould inside again, pressure oil directly promotes the action of first piston formula cylinder block 10 by the first hydraulic oil pipeline 12, first piston formula cylinder block 10 and then promotion functional module 6 move to molding mold cavity 5 and runner cast gate 14 junction, and the waste material of the plastic product in die cavity 5 with runner cast gate 14 place is separated by the cutting knife 13 of functional module 6, finally cooling, the demoulding.
This device can edge-gated with for separating of thermoplasticity plastic product, as shown in Figure 1 and Figure 2; Or tab gate under edge, as shown in Figure 3, Figure 4.
In the present embodiment, die cavity 5 is opened in upper mold core 3 and lower mold core 4, and wherein die cavity 5 also can be opened in upper mold core 3, or is opened in lower mold core 4.In the present embodiment, the first installing hole 8 is opened in lower mold core 4, and certain first installing hole 8 also can be opened in upper mold core 3, and accordingly, the first cylinder body installing hole 11 and the first hydraulic oil pipeline 12 are also opened on patrix 1, and namely functional module 6 is positioned on patrix 1.
What in the present embodiment, the first cylinder body resetting means adopted is stage clip, first cylinder body resetting means can also adopt the second hydraulic oil pipeline to realize, as shown in figure 28, first piston formula cylinder block 10 comprises body 31 and connector 32 two parts, the diameter of connector 32 is less than the diameter of body 31, connector 32 is fixedly mounted on the upper surface of body 31, first cylinder body installing hole 11 comprises macropore 50 and aperture 51 two parts, macropore 50 is positioned at the below of aperture 51, wherein the body 31 of first piston formula cylinder block 10 is arranged in the macropore 50 of the first cylinder body installing hole 11, connector 32 is through after the aperture 51 of the first cylinder body installing hole 11, contact with the lower surface of the connecting portion 9 of functional module 6, wherein be provided with sealing ring between the outer circumference surface of body 31 and the hole wall of macropore 50, also sealing ring is provided with between the outer circumference surface of connector 32 and the hole wall of aperture 51, the height of body 31 is less than the hole depth of macropore 50.Offer the first hydraulic oil pipeline 12 and the second hydraulic oil pipeline 33 at counterdie 2, wherein the first hydraulic oil pipeline 12 is communicated with the bottom of the macropore 50 of the first cylinder body installing hole 11, and the second hydraulic oil pipeline 33 is communicated with the top of macropore 50.When operating, first hydraulic oil pipeline 12 and the second hydraulic oil pipeline 33 are communicated with two actuator ports of a two-position four-way solenoid directional control valve (not shown) respectively, the oil-in of two-position four-way solenoid directional control valve is communicated with fuel tank with high pressure fuel source respectively with oil return opening, if first piston formula cylinder block 10 needs to move upward, when driving the cutting knife of functional module 6 plastic product in die cavity 5 to be separated with the waste material at runner cast gate 14 place, control two-position four-way solenoid directional control valve, first hydraulic oil pipeline 12 is communicated with high pressure fuel source, second hydraulic oil pipeline 33 is communicated with fuel tank, first piston formula cylinder block 10 can be realized move upward, when needs cylinder body resets, control two-position four-way solenoid directional control valve, the second hydraulic oil pipeline 33 is communicated with high pressure fuel source, and the first hydraulic oil pipeline 12 is communicated with fuel tank, can realize first piston formula cylinder block 10 and move downward.
In the present embodiment, functional module 6 and the first driver module 7 are all provided with one, also according to the quantity of the edge-gated of thermoplasticity plastic product or overlapping edges cast gate, patrix or counterdie can arrange functional module 6 and first driver module 7 of respective numbers.
Embodiment 2:
As shown in Figure 5, the difference of the present embodiment and embodiment 1 is, the operate portions of the functional module 6 of the present embodiment is drift 15, and drift 15 is through corresponding with the blind hole on moulding in die cavity 5 or groove after the aperture of the first installing hole 8.Wherein the quantity of functional module 6 and the first driver module 7 is determined according to the quantity of the blind hole on moulding in die cavity 5 or groove.
The present invention is a kind of has the plastic forming die of functional module in use, is first communicated with the first hydraulic oil pipeline 12 by high voltage power oil sources; Then material is added in injection machine, injection machine heating makes material melts, injection mold core rod matched moulds, the runner cast gate of injection machine spout and injection mold and die cavity 5 are communicated with for closed cavity, then by injection machine, the material of melting are injected in the die cavity 5 of injection mold with certain pressure and speed; After injection machine material injection completes, before pressurize operation starts, control high voltage power oil sources to the inner input pressure oil of the first hydraulic oil pipeline 12, pressure oil directly promotes the action of first piston formula cylinder block 10 by the first hydraulic oil pipeline 12, first piston formula cylinder block 10 and then promotion functional module 6 move in the die cavity 5 of injection mold, as shown in Figure 6, the operate portions of functional module 6 (drift) is made to determine blind hole or the groove of product needed in Injection Molding Products upper punch; After eventually passing the pressure maintenance of injection machine certain hour, cooling, the demoulding.
The present embodiment is by drift 15 action of the first driver module 7 controlling functions module 6, realize punching blind hole or groove in product mould, avoid in injection process, the material of melting flows through from the both sides of hole or groove, and converge mutually at the rear portion of blind hole or groove, eliminate shaping weld bond, ensure that outward appearance and the intensity of product.
If while punching blind hole or groove, the waste material of injecting products with runner cast gate place is needed to be separated in mould, another set of functional module and the first driver module can be installed on counterdie again, wherein the operate portions of functional module is cutting knife, thus realize after punching blind hole or groove, before the demoulding, the waste material of moulding with runner cast gate place is separated.
Embodiment 3:
As shown in Figure 7, the difference of the present embodiment and embodiment 2 is, also comprise briquetting 16 and briquetting driver module 17, the drift 15 of functional module 6 is corresponding with the through hole on the moulding in die cavity 5, the upper mold core 3 relative with the lower mold core 4 at the first installing hole 8 place offers the second installing hole 18, second installing hole 18 is communicated with die cavity 5, second installing hole 18 is stepped hole, the macropore of the second installing hole 18 is positioned at the top of aperture, briquetting 16 comprises top briquetting and bottom briquetting, the diameter of top briquetting is greater than the diameter of bottom briquetting, top briquetting and bottom briquetting are formed in one, top briquetting is positioned at the macropore of the second installing hole 18, the outer circumference surface of top briquetting contacts with the hole wall of the macropore of the second installing hole 18, be matched in clearance between the two, bottom briquetting fits with the surface of injecting products in die cavity 5 through after the aperture of the second installing hole 18, the lower surface of bottom briquetting is relative with the position of drift 15, it is also matched in clearance between the aperture of its middle and lower part briquetting and the second installing hole 18.Briquetting driver module 17 can drive briquetting 16 to slide in the second installing hole 18, and wherein briquetting driver module 17 comprises the second ram cylinder cylinder body 34, second cylinder body installing hole 35, third high force feed pipeline 36 and the second cylinder body resetting means (not shown).Wherein the second cylinder body installing hole 35 and third high force feed pipeline 36 are opened on patrix 1, second cylinder body installing hole 35 is vertically arranged, the lower end of the second cylinder body installing hole 35 is connected with the second installing hole 18, the upper end of the second cylinder body installing hole 35 is connected with third high force feed pipeline 36, second ram cylinder cylinder body 34 is arranged in the second cylinder body installing hole 35, the outer circumference surface of the second ram cylinder cylinder body 34 and the inwall of the second cylinder body installing hole 35 are sealed by O-ring seal 30, the lower surface of the second ram cylinder cylinder body 34 is connected with the upper surface of top briquetting, second cylinder body resetting means can drive the second ram cylinder cylinder body 34 to reset, in the present embodiment, the second cylinder body resetting means adopts four stage clip (not shown), the step surface of the second installing hole 18 offers four stage clip installing hole (not shown), stage clip installing hole is evenly distributed in around the aperture of the second installing hole, every root stage clip is installed in a stage clip installing hole, the upper surface of stage clip is pressed on the lower surface of top briquetting.
The present invention is a kind of has the plastic forming die of functional module in use, is first connected with third high force feed pipeline 36 with the first hydraulic oil pipeline 12 by high voltage power oil sources, then material is added in injection machine, injection machine heating makes material melts, injection mold mould matched moulds, hydraulic oil is passed in third high force feed pipeline 36, briquetting 16 is made to be in lowest order, lower surface and the die cavity 5 of the bottom briquetting of briquetting 16 fit, and are communicated with for closed cavity by the runner cast gate of injection machine spout and injection mold and die cavity 5, then inject the die cavity 5 of injection mold in by the material of melting with certain pressure and speed by injection machine, after injection machine material injection completes, before pressurize operation starts, control high voltage power oil sources to input pressure oil in the first hydraulic oil pipeline 12, make the release of third high force feed pipeline 36 simultaneously, pressure oil directly promotes the action of first piston formula cylinder block 10 by the first hydraulic oil pipeline 12, as shown in Figure 8, first piston formula cylinder block 10 and then promotion functional module 6 move in the die cavity 5 of injection mold core rod, simultaneously the briquetting 16 of injection mold core rod moves under the effect of spring and functional module 6 outside the die cavity 5 of injection mold, thus make the plastic product upper punch of functional module 6 in die cavity 5 determine the hole of product needed, after eventually passing the pressure maintenance of injection machine certain hour, cooling, the demoulding.
The present embodiment, by the drift action of the first driver module controlling functions module, realizes product punching in mould, avoids in injection process, the material of melting flows through from the both sides of hole or groove, and converge mutually at the rear portion in hole, eliminate shaping weld bond, ensure that outward appearance and the intensity of product.
Embodiment 4:
As shown in Figure 9, the difference of the present embodiment and embodiment 1 is, wherein the operate portions of functional module 6 is insert 19, and on die cavity 5, be provided with reserved material region 20, first installing hole 8 is communicated with die cavity 5 by reserved material region 20, reserved material region 20 is corresponding with the position moulding in die cavity 5 producing shrink mark or hollow bubble, with reserved, insert 19 expects that region 20 contacts.In the present embodiment, functional module 6 is one, certainly, according to the quantity of position moulding producing shrink mark or hollow bubble, can arrange multiple functional module 6, correspond, and reserved material region 20 also arranges multiple, identical with the number of functional module 6.
The present invention is a kind of has the plastic forming die of functional module in use, is first connected with the first hydraulic oil pipeline 12 by high voltage power oil sources; Then material is added in injection machine, injection machine heating makes material melts, injection mould closing, the runner cast gate of injection machine spout and injection mold and die cavity 5 are communicated with for closed cavity, then by injection machine, the material of melting is injected in the die cavity 5 of injection mold with certain pressure and speed, through injection machine injection and certain hour pressurize; After pressurize operation completes, control high voltage power oil sources to the inner input pressure oil of the first hydraulic oil pipeline 12, pressure oil directly promotes the action of first piston formula cylinder block 10 by the first hydraulic oil pipeline 12, first piston formula cylinder block 10 and then promotion functional module 6 move in the die cavity 5 of injection mold, as shown in Figure 10, make the insert 19 of functional module 6 that the express material in reserved material region is produced the position of shrink mark or hollow bubble in plastic product; Finally cooling, the demoulding.
The present embodiment is by being set to insert by operate portions, after in injection machine injection and mould, pressurize operation completes, controlling functions module action, express material in reserved material region is produced on injecting products the position of shrink mark or hollow bubble, realize local input of holding pressure in mould, effectively can eliminate product local appearance shrink mark and inner hollow bubble.
Embodiment 5:
As shown in figure 11, the difference of the present embodiment and embodiment 1 is, wherein the operate portions of functional module 6 is insert 19, and on die cavity 5, be provided with reserved material region 20, first installing hole 8 is communicated with die cavity 5 by reserved material region 20, reserved material region 20 is corresponding with the moulding in die cavity 5 producing the position that pressure differential makes a variation, and insert 19 expects that region 20 contacts with reserving.In the present embodiment, functional module 6 is one, according to quantity moulding producing the position that pressure differential makes a variation, can arrange multiple functional module 6, correspond, and reserved material region 20 also arranges multiple, identical with the number of functional module 6.
The present invention is a kind of has the plastic forming die of functional module in use, is first connected with the first hydraulic oil pipeline 12 by high voltage power oil sources, then material is added in injection machine, injection machine heating makes material melts, injection mould closing, the runner cast gate of injection machine spout and injection mold and die cavity 5 are communicated with for closed cavity, then by injection machine, the material of melting is injected in the die cavity 5 of injection mold with certain pressure and speed, through injection machine injection and certain hour pressurize, after pressurize operation completes, control high voltage power oil sources to the inner input pressure oil of the first hydraulic oil pipeline 12, pressure oil directly promotes the action of first piston formula cylinder block 10 by the first hydraulic oil pipeline 12, first piston formula cylinder block 10 and then promotion functional module 6 move in the die cavity 5 of injection mold, as shown in figure 12, make the insert 19 of functional module 6 that the express material in reserved material region is born the lower position of injection machine injection pressure in plastic product, this position is made to produce pressure under the extruding of insert 19, reach the state that on whole product, all sites pressure relatively balances, finally cooling, the demoulding.
The present embodiment is by being set to insert by operate portions, after in injection machine injection and mould, pressurize operation completes, controlling functions module action, express material in reserved material region is born the lower position of injection machine injection pressure on injecting products, this position is made to produce pressure under the extruding of functional module, reach the state of the pressure relative equilibrium of all sites on whole product, reach the object of stable precisely control product size.
Embodiment 6:
As shown in figure 13, the difference of the present embodiment and embodiment 1 is, wherein the operate portions of functional module 6 is insert 19, and on die cavity 5, be provided with reserved material region 20, first installing hole 8 is communicated with die cavity 5 by reserved material region 20, reserved material region 20 with the moulding in die cavity 5 produces be stranded gas or the position of burning corresponding, insert 19 expects that region 20 contacts with reserving.In the present embodiment, functional module 6 is one, and according to the quantity at position moulding producing tired gas or burn, can arrange multiple functional module 6, correspond, reserved material region 20 also arranges multiple, identical with the number of functional module 6.
The present invention is a kind of has the plastic forming die of functional module in use, is first connected with the first hydraulic oil pipeline 12 by high voltage power oil sources; Then material is added in injection machine, injection machine heating makes material melts, injection mould closing, the runner cast gate of injection machine spout and injection mold and die cavity 5 are communicated with for closed cavity, then by injection machine, the material of melting is injected in the die cavity 5 of injection mold with certain pressure and speed, through injection machine injection and certain hour pressurize; After material injection completes, tired gas in plastic product and burn phenomenon and appear in reserved material region, before pressurize operation starts, control high voltage power oil sources to the inner input pressure oil of the first hydraulic oil pipeline 12, pressure oil directly promotes the action of first piston formula cylinder block 10 by the first hydraulic oil pipeline 12, first piston formula cylinder block 10 and then promotion functional module 6 move in the die cavity 5 of injection mold, as shown in figure 14, make the insert 19 of functional module 6 by the inside of the express material in reserved material region to plastic product; After eventually passing the pressure maintenance of injection machine certain hour, cooling, the demoulding.
The present embodiment is by being set to insert by operate portions, after injection machine has been injected, controlling functions module action, by the inside of the express material in reserved material region to injecting products, by gas displacement inner or surperficial for moulding out, avoid gas superheat and cause plastic product to burn, affecting outward appearance and the intensity of product.
Embodiment 7:
As shown in figure 15, the difference of the present embodiment and embodiment 1 is, operate portions is insert 19, insert 19 is corresponding with the position of the cast gate of a runner 21, the size of insert 19 is greater than or the size of cast gate close to described runner 21, to such an extent as to insert 19 can close described runner 21 wholly or in part.In the present embodiment, functional module 6 is one, according to the quantity of runner cast gate, can arrange multiple functional module 6.
The present invention is a kind of has the plastic forming die of functional module in use, as shown in figure 16, is first connected with the first hydraulic oil pipeline 12 by high voltage power oil sources; Then add in injection machine by material, injection machine heating makes material melts, injection mould closing, is communicated with for closed cavity by the runner cast gate of injection machine spout and injection mold and die cavity 5; Before injection machine material injection operation starts, control high voltage power oil sources to input pressure oil in the first hydraulic oil pipeline 12, pressure oil directly promotes the action of first piston formula cylinder block 10 by the first hydraulic oil pipeline 12, a runner cast gate is interior mobile wherein for the insert 19 of first piston formula cylinder block 10 and then promotion functional module 6, and insert 19 will wherein be closed by a runner cast gate wholly or in part; Then by injection machine, the material of melting is injected in the die cavity 5 of injection mold with certain pressure and speed; Through the injection of injection machine a period of time, after the position that weld bond produces is in the position needed, as shown in figure 15, first hydraulic oil pipeline 12 release, first cylinder body resetting means promotes functional module 6 and moves to the direction of the die cavity 5 away from injection mold, a wherein runner cast gate 14 by insert 19 is closed wholly or in part is opened completely, then completes whole material injection process; After eventually passing the pressure maintenance of injection machine certain hour, cooling, the demoulding.
The present embodiment is by being set to insert by operate portions, before injection machine starts material injection, controlling functions module action, runner cast gate on the other side is closed by functional module wholly or in part, then the material of melting injects in the die cavity of injection mold with certain pressure and speed by injection machine, by controlling the aperture size of runner cast gate, just can control the flowing sequential of the fused materials that different runner cast gate enters in mould, what control the fused materials that different runner cast gate enters converges position, thus realizes adjustment weld bond position.
Embodiment 8:
As shown in figure 17, the difference of the present embodiment and embodiment 1 is, operate portions is block 22 of loosing core, and loose core block 22 and injecting products need the position of loosing core corresponding, the oblique setting of the first installing hole 8.In the present embodiment, injecting products needs the position of loosing core to have two places, so the quantity of functional module 6 and the first driver module 7 is two, is all positioned on counterdie 2.Certainly, the number at the position of loosing core is needed according to injecting products, also can arrange one or more functional module 6 and the first driver module 7, if injecting products needs the position of loosing core to be positioned at the upper side of moulding, then functional module 6 and the first driver module 7 are all arranged on patrix 1.
The present invention is a kind of has the plastic forming die of functional module in use, is first connected with the first hydraulic oil pipeline 12 by high voltage power oil sources; Then add in injection machine by material, injection machine heating makes material melts, injection mould closing, is communicated with for closed cavity by the runner cast gate of injection machine spout and injection mold and die cavity 5; Before injection machine material injection operation starts, control high voltage power oil sources to input pressure oil in the first hydraulic oil pipeline 12, pressure oil directly promotes the action of first piston formula cylinder block 10 by the first hydraulic oil pipeline 12, first piston formula cylinder block 10 and then promote the block 22 of loosing core of functional module 6 and move in the die cavity 5 of injection mold, the block 22 that makes to loose core enters the position needing angled core-pulling in die cavity 5; Then by injection machine, the material of melting is injected in the die cavity 5 of injection mold with certain pressure and speed; After material injection completes, carry out the pressurize operation of certain hour; As shown in figure 18, after pressurize operation completes, cooling, is exited the plastic product position of die cavity 5, and returns in the first installing hole 8, the demoulding by the functional module 6 of spring promotion angled core-pulling.
The present embodiment is by being set to workpiece block of loosing core, and the oblique setting of the first installing hole, before injection machine injection fused materials, controlling functions module action, the block that makes to loose core enters in die cavity, then by injection machine, fused materials is injected the die cavity of mould, pressurize after material injection completes, cooling, finally control block of loosing core and exit, make block homing of loosing core, realize mould angled core-pulling, simplify mould structure, reduce die cost.
Functional module 6 and all oblique setting of the first installing hole 8 in the present embodiment, as shown in Figure 19, Figure 20, functional module 6 and the first installing hole 8 also can be laterally disposed, realize mould side core-pulling or side direction is small looses core, and simplify mould structure, reduce die cost.
Embodiment 9:
As shown in figure 21, the difference of the present embodiment and embodiment 1 is, the operate portions of functional module 6 is template 23, the side that template 23 contacts with die cavity 5 is provided with logo, in the shape of template 23 and the side that die cavity 5 contacts and die cavity 5, the shape of injection product surface is consistent, and the position that template 23 and injecting products are provided with logo is corresponding.In the present embodiment, according to the position of logo on injecting products, functional module 6 and the first driver module 7 are all arranged on patrix 1, certainly, according to the difference of emblem cursor position or quantity, also functional module 6 and the first driver module 7 can be arranged on counterdie 2, or multiple functional module 6 and the first driver module 7 are set.
The present invention is a kind of has the plastic forming die of functional module in use, is first connected with the first hydraulic oil pipeline 12 by high voltage power oil sources; Then add in injection machine by material, injection machine heating makes material melts, injection mould closing, is communicated with for closed cavity by the runner cast gate of injection machine spout and injection mold and die cavity 5; Then by injection machine, the material of melting is injected in the die cavity 5 of injection mold with certain pressure and speed; After injection machine material injection completes, before pressurize operation starts, as shown in figure 22, control high voltage power oil sources to input pressure oil in the first hydraulic oil pipeline 12, pressure oil directly promotes the action of first piston formula cylinder block 10 by the first hydraulic oil pipeline 12, the template 23 of first piston formula cylinder block 10 and then promotion functional module 6 moves in the die cavity 5 of injection mold, makes logo (LOGO) shape plastic product of template 23 in die cavity 5 squeezing out product needed; After eventually passing the pressure maintenance of injection machine certain hour, cooling, the demoulding.
The present embodiment, by workpiece being set to the template with logo, can realize injection moulding logo on workpiece, simplifies mould structure, reduces die cost.
Embodiment 10:
As shown in figure 23, the difference of the present embodiment and embodiment 1 is, functional module 6 operate portions is baffle plate 24, described each baffle plate 24 corresponding with a runner cast gate 14, the size of described each baffle plate 24 is all greater than the size of the runner cast gate 14 corresponded, thus makes each baffle plate 24 all can close corresponding runner cast gate 14.Functional module 6 and the first driver module 7 are more than 2 or 2, and concrete number is identical with the sum of runner cast gate 14, and in the present embodiment, functional module 6 and the first driver module 7 are 2, corresponding to the runner cast gate 14 of two on mould.
The present invention is a kind of has the plastic forming die of functional module in use, is first connected with two the first hydraulic oil pipelines 12 by high voltage power oil sources; Then add in injection machine by material, injection machine heating makes material melts, injection mould closing, is communicated with for closed cavity by the runner cast gate of injection machine spout and injection mold and die cavity 5; Before injection machine material injection operation starts, control high voltage power oil sources simultaneously to input pressure oil in two the first hydraulic oil pipelines 12, pressure oil directly promotes the action of first piston formula cylinder block 10 by the first hydraulic oil pipeline 12, two first piston formula cylinder blocks 10 and then promote functional module 6 and move to the runner cast gate 14 of correspondence, the runner cast gate 14 of correspondence is closed by the baffle plate 24 of functional module 6 completely, then by injection machine, the material of melting is injected in the runner of injection mold with certain pressure and speed; Through the injection of injection machine a period of time, after the inner fully filling of runner of injection mold, as shown in figure 24, two the first hydraulic oil pipeline 12 releases simultaneously, promote functional module 6 by spring to move to the direction of the die cavity 5 away from injection mold simultaneously, make two synchronously to be opened by the runner cast gate 14 that baffle plate 24 is closed completely, the fused materials constant speed in runner enters in the die cavity 5 of injection mold; After eventually passing the pressure maintenance of injection machine certain hour, cooling, the demoulding.
The present embodiment is by being set to baffle plate by operate portions, before injection machine injection fused materials, controlling functions module action, make baffle plate closed flow cast gate, then injection machine injection is started, after injection molding channel inside is full of fused materials, control baffle plate homing again, runner cast gate is opened, complete injection machine injection, take this structure can avoid when flow channel length difference is larger, the unbalanced situation of each position briquetting pressure of product, thus realize each runner cast gate constant speed charging, reach the object of stable precisely control product size.
The present embodiment is by arranging oppositely loose core module and functional module, can when the draw taper of product design be zero degree, realize product stripping and runner gate cutting, and effectively solve the problem that Surface Appearance wipes flower, its principle is when the demoulding, module of oppositely loosing core 25 exits, can elastic deformation be there is and reduce the frictional force of moulding outer surface and mold cavity 5 in moulding when the demoulding, thus avoid Surface Appearance to wipe flower, if do not arrange module 25 of oppositely loosing core, then when the demoulding, the frictional force of moulding outer surface and mold cavity 5 is very large, thus be easy to occur that product appearance wipes flower phenomenon.
In a word, a kind of plastic forming die with functional module of the present invention can realize following function:
A. automatic hot cutting in mould: mould internal cutting off cast gate, reduces human cost, improving product yield.
B. local input of holding pressure in mould: solve product local appearance shrink mark and inner hollow bubble.
C. in mould, punching is shaping: carry out product punching in mould, eliminates shaping weld bond.
D. forced exhaust in mould: strengthen die cavity exhaust, stablize condition of molding.
E. extruded in mould: balanced stress, elimination current mark and weld bond.
F. SECO in mould: adjustment weld bond position.
G. in mould, constant speed enters glue: the briquetting pressure at each position of balanced product, reaches stable precisely control product size.
H. mechanism simplifying in mould: simplify mould structure, reduces die cost.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (12)
1. one kind has the plastic forming die of functional module, comprise patrix (1), counterdie (2), at patrix (1) internal fixtion, upper mold core (3) is installed, at counterdie (2) internal fixtion, lower mold core (4) is installed, die cavity (5) is provided with between upper mold core (3) and lower mold core (4), it is characterized in that: also comprise at least one functional module (6) and at least one the first driver module (7), described upper mold core (3) or lower mold core (4) offer at least one first installing hole (8), each first installing hole (8) is all communicated with die cavity (5), described each functional module (6) is installed in first installing hole (8), described each functional module (6) includes operate portions and connecting portion (9), described operate portions is fixedly mounted on connecting portion (9), described operate portions can contact with described die cavity (5), described first driver module (7) can drive functional module (6) be slided in the first installing hole (8), described operate portions is cutting knife, drift, insert, to loose core block, template or baffle plate, described first driver module (7) comprises first piston formula cylinder block (10), first cylinder body installing hole (11), first hydraulic oil pipeline (12) and the first cylinder body resetting means, described first cylinder body resetting means adopts the second hydraulic oil pipeline to realize, described first piston formula cylinder block (10) comprises body (31) and connector (32) two parts, the diameter of described connector (32) is less than the diameter of described body (31), described connector (32) is fixedly mounted on the upper surface of described body (31), described first cylinder body installing hole (11) comprises macropore (50) and aperture (51) two parts, described macropore (50) is positioned at the below of aperture (51), the body (31) of wherein said first piston formula cylinder block (10) is arranged in the macropore (50) of described first cylinder body installing hole (11), after the aperture (51) of described connector (32) through described first cylinder body installing hole (11), contact with the lower surface of the connecting portion (9) of described functional module (6), sealing ring is provided with between the outer circumference surface of wherein said body (31) and the hole wall of described macropore (50), also sealing ring is provided with between the outer circumference surface of described connector (32) and the hole wall of described aperture (51), the height of described body (31) is less than the hole depth of described macropore (50), described first hydraulic oil pipeline (12) and the second hydraulic oil pipeline (33) is offered at described counterdie (2), wherein said first hydraulic oil pipeline (12) is communicated with the bottom of the macropore (50) of described first cylinder body installing hole (11), described second hydraulic oil pipeline (33) is communicated with the top of described macropore (50), described first cylinder body resetting means can drive first piston formula cylinder block (10) to reset.
2. a kind of plastic forming die with functional module according to claim 1, it is characterized in that: described each first installing hole (8) is stepped hole, the aperture of each first installing hole (8) all contacts with die cavity (5), described connecting portion (9) is positioned at the macropore of the first installing hole (8), and described operate portions contacts with described die cavity (5) through after the aperture of the first installing hole (8).
3. a kind of plastic forming die with functional module according to claim 2, it is characterized in that: described operate portions is cutting knife (13), described cutting knife (13) is corresponding with the junction of die cavity (5) and runner cast gate (14).
4. a kind of plastic forming die with functional module according to claim 2, it is characterized in that: described operate portions is drift (15), described drift (15) is corresponding with the blind hole on the moulding in die cavity (5) or groove.
5. a kind of plastic forming die with functional module according to claim 2, it is characterized in that: also comprise at least one briquetting (16) and at least one briquetting driver module (17), described operate portions is drift (15), described drift (15) is corresponding with the through hole on the moulding in die cavity (5), the relative lower mold core (4) of upper mold core (3) or lower mold core (4) with described first installing hole (8) place or upper mold core (3) offer the second installing hole (18), second installing hole (18) is communicated with die cavity (5), a briquetting (16) is all installed in each second installing hole (18), described briquetting (16) is relative with the position of drift (15), described each briquetting (16) all fits with the surface of die cavity (5) interior injecting products, described briquetting driver module (17) can drive briquetting (16) to slide in the second installing hole (18).
6. a kind of plastic forming die with functional module according to claim 2, it is characterized in that: described operate portions is insert (19), described die cavity (5) is provided with at least one reserved material region (20), described first installing hole (8) is communicated with die cavity (5) by reserved material region (20), described each reserved material region (20) is all corresponding with the position moulding in die cavity (5) producing shrink mark or hollow bubble, with reserved, described insert (19) expects that region (20) contacts.
7. a kind of plastic forming die with functional module according to claim 2, it is characterized in that: described operate portions is insert (19), described die cavity (5) is provided with at least one reserved material region (20), described first installing hole (8) is communicated with die cavity (5) by reserved material region (20), described each reserved material region (20) is corresponding with the moulding in die cavity (5) producing the position that pressure differential makes a variation, with reserved, described insert (19) expects that region (20) contacts.
8. a kind of plastic forming die with functional module according to claim 2, it is characterized in that: described operate portions is insert (19), described die cavity (5) is provided with at least one reserved material region (20), described first installing hole (8) is communicated with die cavity (5) by reserved material region (20), described each reserved material region (20) with the moulding in die cavity (5) produces tired gas or the position of burning corresponding, described insert (19) expects that region (20) contacts with reserving.
9. a kind of plastic forming die with functional module according to claim 2, it is characterized in that: described operate portions is insert (19), described insert (19) is corresponding with the position of the cast gate of a runner (21), and the size of described insert (19) is greater than or the size of cast gate close to described runner (21).
10. a kind of plastic forming die with functional module according to claim 2, it is characterized in that: described operate portions is block of loosing core (22), described block of loosing core (22) and injecting products need the position of loosing core corresponding, and described each first installing hole (8) is all oblique or laterally disposed.
11. a kind of plastic forming dies with functional module according to claim 2, it is characterized in that: described operate portions is template (23), the side that described template (23) contacts with die cavity (5) is provided with logo, template (23) is consistent with the shape of the side that die cavity (5) contacts and the shape of die cavity (5) interior injection product surface, and described template (23) is corresponding with the position that injecting products is provided with logo.
12. a kind of plastic forming dies with functional module according to claim 2, it is characterized in that: described functional module (6) and the first driver module (7) are more than 2 or 2, described operate portions is baffle plate (24), described each baffle plate (24) is corresponding with a runner cast gate (14), and the size of described each baffle plate (24) is all more than or equal to the size of the runner cast gate (14) corresponded.
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| CN103895191B (en) * | 2014-04-08 | 2016-08-03 | 威士茂电子塑胶(珠海)有限公司 | A kind of have the mould of automatic water gate cutting device in mould |
| CN105252699B (en) * | 2015-11-13 | 2018-05-15 | 吕冬冬 | Based on electronic product casing automatic forming device and forming method fervent in mould |
| CN110001007A (en) * | 2019-04-30 | 2019-07-12 | 广东三凌塑料管材有限公司 | A kind of pair is held telescopic lap splice molding machine |
| CN112936900B (en) * | 2021-02-03 | 2022-05-13 | 台州市黄岩大成模具有限公司 | Mould for molding, punching and injection molding of thermosetting composite material |
| CN115816784B (en) * | 2023-02-02 | 2023-04-18 | 成都航空职业技术学院 | NMT-based nano injection molding mold |
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