CN208615219U - A kind of liquid silica gel injecting molding die - Google Patents

Abstract

The utility model discloses a kind of liquid silica gel injecting molding dies, including upper die and lower die, the upper mold includes upper die holder, the upper thermal insulation board below the upper die holder, the upper mold core plate below the upper thermal insulation board, the die plate insert being set on the upper mold core plate；The lower die includes lower die holder, the lower thermal insulation board above lower die holder, the lower die core plate above the lower thermal insulation board, the punch-pin on the lower die core plate, the push piece mechanism in the lower die core plate, the pressure block above the lower die core plate；The die plate insert and the punch-pin shape forming cavity are provided with the through-hole for heat dissipation in the punch-pin, cooling fin are arranged in the through-hole；Pressure block, push piece structure are provided on the lower die core plate；Present patent application has the following technical effect that first, improves product quality；Second, shorten the production cycle, reduces production cost.

Description

A kind of liquid silica gel injecting molding die

Technical field

The utility model relates to technical field of mold, in particular to a kind of liquid silica gel injecting molding die.

Background technique

As silica gel product is in the extensive use of daily-use chemical industry, medical treatment, electronics and automobile and other industries, in order to realize that silica gel adds Industrial high-efficient rate, high quality and low cost production, so that liquid silica gel injection molding technology is rapidly developed, due to silicon In the liquid materials process of injection molding such as glue, the mobility of liquid material is related to temperature, and due to not having provision for thermal insulation, temperature becomes Change too fast and uneven, causing product to occur at the time of molding, filling is uneven, and partial region cools and solidifies too early, influences product matter Amount；While after product injection moulding, need to cool and solidify, cold scarce or air-cooled by nature at present, cannot effectively obtain will be internal Heat bring out, if cooling time is insufficient, cause product mucous membrane, tearing；And natural cooling or air-cooled is leaned on, needed for solidification Time it is long, influence the production cycle of product.

Utility model content

In view of this, tending to have quality defect to solve silica gel product, the production cycle is longer, etc. technical problems, this is practical It is novel that a kind of liquid silica gel injecting molding die is provided:

A kind of liquid silica gel injecting molding die, it is characterised in that: including upper die and lower die, the upper mold includes upper mold Seat, the upper mold core plate below the upper thermal insulation board, is set to the upper mold at the upper thermal insulation board below the upper die holder Die plate insert on core plate；The lower die include lower die holder, the lower thermal insulation board above lower die holder, be set to it is described under it is heat-insulated Lower die core plate above plate, the push piece mechanism in the lower die core plate, is set to institute at the punch-pin on the lower die core plate State the pressure block above lower die core plate；The die plate insert and the punch-pin shape forming cavity are provided with for dissipating in the punch-pin The through-hole of heat, the through-hole is interior to be arranged cooling fin.

When specific works, the upper mold is moved down, constantly close with the lower die, when the die plate insert and lower mold core Plate offsets, and punch-pin offsets with upper mold core plate, when pressure block and upper mold core plate offset, the die plate insert and the upper mold core plate, Push piece mechanism, the punch-pin in the lower die core plate are enclosed type chamber jointly, and the note of product can be carried out by injection canal Radiosilicon glue shapes required product until injection is completed；One piece of thermal insulation board is respectively being set up and down, and the upper thermal insulation board is heat-insulated under Plate uses high resistance to compression and low heat conductivity material, the loss of heat when can reduce mold work, and temperature is opposite when making type intracavitary work Stablize, avoids at the time of molding, occurring filling non-uniform problem.

It is provided with the through-hole for heat dissipation among the punch-pin, cooling fin is installed in through-hole, can speed up the cold of product But, so effective that bring out internal heat, it can avoid deficiency cooling time, the problem of mucous membrane, tearing occurs in formed product, together When compared to traditional type of cooling such as natural cooling or air-cooled, all substantially reduce the production cycle of product.

Further, it is equipped with heating bar in the die plate insert and lower die core plate, the heating bar is included warming line Heating bar, every group of independent temperature control, preferably control work when temperature change；In product injection moulding, due to liquid material The natural cooling of material will lead to part and premature cooling occurs, the different situation of curing degree occurs, and setting heating bar can make to produce When product form, the temperature range of stable and uniform is maintained, keeps liquid material mobility more preferable, more uniform fills up type chamber.

Further, the die plate insert is detachably connected with upper mold core plate, its contact surface is provided with sheathing paper, work When due to liquid material natural cooling, lose a part of heat, die plate insert can also absorb a part of heat, then pass through again It is contacted with upper mold core plate, conducts heat to the external world and go, and sheathing paper is set, can effectively controlled the loss of heat, make finished product When molding, a more stable temperature range is maintained, keeps liquid material mobility more preferable, more uniform fills up type Chamber.

Further, the push piece mechanism includes push plate, push rod, spring portion；The push plate be located at the die plate insert with Between lower die core plate, the push plate upper surface is flushed with lower die core plate upper surface；The push rod is between push plate and spring portion, institute Push rod is stated to be slidably connected with the lower die core plate and the lower thermal insulation board；The spring portion is mounted in lower die holder, the spring Portion includes spring and fixed plate, and the fixed plate is above the spring, and the fixed plate is detachably connected with spring, fixed plate It is slidably connected with lower die holder；The push rod upper end is detachably connected with the push plate, and the push rod lower end and the fixed plate can Dismantling connection；When work, push rod can be made to push push plate campaign by the elastic force of spring, enable the smooth fast demoulding of product.

Further, the horizontal direction of the upper mold core plate offers venthole, position setting among the venthole There is the connector for connecting the through-hole being arranged in venthole ontology and the punch-pin；When work, venthole can with external cold air, Accelerate the cooling of product.

Further, the punch-pin lower end is detachably connected with lower die core plate, in the punch-pin upper end and upper mold core plate Locating slot matches；In work, the punch-pin upper end is matched with the locating slot in upper mold core plate, so that among the punch-pin Through-hole can preferably be connect with the connector；And as punch-pin is worn, can be replaced at any time.

Further, the punch-pin upper surface is provided with annular groove, is equipped with sealing ring in annular groove.When work, no It only can be reduced the abrasion of mold, moreover it is possible to make the better tightness of the through-hole and connector among the punch-pin.

The utility model has the beneficial effects that heat is abundant when making mold work, temperature is uniform, provides the quality of product；Together When, shorten the production cycle of product, greatly improves working efficiency.

Detailed description of the invention

The utility model is further described with reference to the accompanying drawings and examples.

Fig. 1 is a kind of structural schematic diagram of liquid silica gel injecting molding die of the utility model.

Fig. 2 is a kind of structural schematic diagram of the punch-pin of liquid silica gel injecting molding die of the utility model.

Description of symbols 1, upper die holder；2, first thermal insulation board；3, venthole；4, upper mold core plate；5, pressure block；6, under Mold core plates；7, the second thermal insulation board；8, lower die holder；9, push plate；10, heating rod；11, push rod；12, spring portion；13, type chamber；14, fixed Position slot；15, annular groove；16, connector；17, punch-pin；17-1, through-hole；18, die plate insert；19, sheathing paper.

Specific embodiment

The following is a combination of the drawings in the embodiments of the present utility model carries out the technical scheme in the embodiment of the utility model Clear, complete description, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment It is only used for explaining relative positional relationship, motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if When the particular pose changes, then directionality instruction also correspondingly changes correspondingly.

In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and cannot understand For its relative importance of indication or suggestion or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ", The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment Case can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution Conflicting or cannot achieve when occur will be understood that the combination of this technical solution is not present, also not in the requires of the utility model Protection scope in.

The design of the utility model is further detailed below in conjunction with attached drawing.

Please refer to Fig. 1-2, a kind of liquid silica gel injecting molding die, including upper die and lower die, upper mold include upper die holder 1, Upper thermal insulation board 2 set on 1 lower section of upper die holder, is set on upper mold core plate 4 the upper mold core plate 4 set on upper 2 lower section of thermal insulation board Die plate insert 18；Lower die includes lower die holder 8, the lower thermal insulation board 7 above lower die holder, the lower die above lower thermal insulation board 7 Core plate 6, the punch-pin 17 on lower die core plate 6, the push piece mechanism in lower die core plate 6, above lower die core plate 6 Pressure block 5；Die plate insert 18 and 17 shape forming cavity 13 of punch-pin；The through-hole 17-1 for heat dissipation, through-hole 17- are provided in punch-pin 15 Cooling fin is set in 1.

When installation, upper thermal insulation board 2, upper mold core plate 4 by screw installation be connected on upper die holder 1, die plate insert 18 with it is upper Mold core plates 4 are detachably connected, and die plate insert 18 is fastened on upper mold core plate 4 by screw；Simultaneously die plate insert 18 with it is upper It is provided with sheathing paper 19 at the contact surface of mold core plates 4, can effectively control the loss of heat, makes finished product when molding, dimension It holds in a more stable temperature range；Lower thermal insulation board 7, lower die core plate 6 are connected on lower die holder 8 by screw installation, convex 17 lower end of mould is detachably connected with lower die core plate 6, and 16 lower end of punch-pin is provided with screw thread, and lower die core plate 6 is provided with threaded hole, Punch-pin 17 can be screwed in and is wherein coupled.Upper thermal insulation board and lower thermal insulation board use high resistance to compression and low heat conductivity material, reduce mold The loss of heat when work, temperature is relatively stable when making type intracavitary work, avoids at the time of molding, occurring that filling is non-uniform to ask Topic.

Pressure block 5 is detachably connected with lower die core plate 6, and pressure block 5 is fixed by screws on lower die core plate 6, in pressure-bearing Elastomer, a little higher than pressure block 5 of the height of elastomer are provided in block 5, push piece mechanism includes push plate 9, push rod 11, spring portion 12；Push plate 9 between die plate insert 18 and lower die core plate 6, push rod 11 pass through lower die core plate 4, lower thermal insulation board 7, push rod 11 with Lower die core plate 4 and lower thermal insulation board 7 are slidably connected；Spring portion 12 is mounted in lower die holder 8, and spring portion 12 includes spring and fixation Plate, above spring, fixed plate is detachably connected fixed plate with spring, and fixed plate is slidably connected with lower die holder 8；In fixed plate Annular slot is arranged in lower end surface, and spring can screw in wherein；11 upper end of push rod is detachably connected with push plate 9, and push plate 9 is equipped with screw thread Hole, 11 two sections of push rod are designed with screw thread, and dead plate upper end face offers threaded hole；The spiral shell of 11 upper end of push rod screw-in push plate 9 It in pit, is coupled, the lower end of push rod 11 screws in the threaded hole of fixed plate, is coupled.

When specific works, upper mold is moved down, constantly close with lower die, and die plate insert 18 is constantly close with punch-pin 17, when Die plate insert 18 touches push plate 9, moves with the downward mold core plates 6 of push plate 9, and punch-pin 17 then passes through punch insert 18, upwards The locating slot 14 of mold core plates 4 moves, and when die plate insert 18 and lower die core plate 6 offset, push plate 9 also offsets with lower die core plate 6, cavity plate Insert 18 offsets with 9 upper surface of push plate, and the upper surface of push plate 9 is flushed with the upper surface of lower die core plate 6, at this point, at spring portion In impaction state；Punch-pin 17 offsets with upper mold core plate 4, the upper end of punch-pin 17 and 14 location fit of locating slot in upper mold core plate 4 It completes, the through-hole 17-1 in punch-pin 17 aligns with connector 16, and 17 upper surface of punch-pin is provided with annular groove 15, annular Be equipped with sealing ring in groove 15, punch-pin 17 made to be in contact with upper mold core plate 6, when being matched with locating slot 14, can slowly into Row, reduces the abrasion of mold, makes better tightness.

When pressure block 5 and upper mold core plate 4 offset, due to being provided with elastomer, and a little higher than pressure block in pressure block 5, hold Briquetting 5 during offseting with upper mold core plate 4, when elastomer can be such that the upper mold core plate 4 moves downward slowly with pressure block 5 Contact, finally offsets, and reduces the rigid contact of mold, extends die life；It is recessed after upper die and lower die full contact offsets 18 punch-pin of mould insert, 17 shape forming cavity 13；Then the injection of product is carried out by injection canal, is injected until filling full type chamber 13 It completes, obtains required product.

Heating bar 9 is equipped in die insert 18 and lower die core plate 6, heating bar 9 is the heating bar of included warming line, often The independent temperature control of group preferably controls temperature change when work；It is naturally cold due to liquid material in product injection moulding But, it will lead to part and premature cooling occur, the different situation of curing degree occur, because setting heating bar can make formed product When, there is the temperature range of a stable and uniform, keep liquid material mobility more preferable, more uniform fills up type chamber.

After the completion of formed product, need cooling that can demould, the horizontal direction of upper mold core plate 4 offers venthole 3, leads to The intermediate position of stomata 3 is provided with the connector 16 for connecting the through-hole 17-1 in venthole ontology and punch-pin 17；At this point, punch-pin 14 location fit of locating slot in 17 upper end and upper mold core plate 4 is completed, and the through-hole 17-1 and connector 16 in punch-pin 17 are opposite Together；When product cooling heat dissipation, punch-pin 17 transmits heat when product cooling, then the through-hole 17-1 by being mounted in punch-pin 17 Cooling fin heat is transmitted to connector 16 faster, be discharged eventually by the venthole 3 of opening up on upper mold core plate 4；For Accelerate the cooling of product, venthole 3 can form cooling route with external cold air etc., shorten the product cooling period, improve life Produce efficiency.

After product cooling and solidifying, need to demould product, at this point, upper mold moves upwards, product can stay in punch-pin 17 On, the spring portion 12 being mounted in lower die holder 8 is in open configuration, due to elastic force effect will will drive push rod 11 and push plate 9 to Upper movement, push plate 9 eject product from punch-pin 17, smoothly demould.

Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, this field It is to be appreciated by one skilled in the art that can be with the technical solution of the present invention is modified or equivalently replaced, without de- Objective and range from technical solutions of the utility model, should all cover in the scope of the claims of the utility model.

Claims (7)

1. a kind of liquid silica gel injecting molding die, it is characterised in that: including upper die and lower die, the upper mold include upper die holder, Upper thermal insulation board below the upper die holder, is set to the upper mold core at the upper mold core plate below the upper thermal insulation board Die plate insert on plate；The lower die includes lower die holder, the lower thermal insulation board above lower die holder, is set on the lower thermal insulation board Side lower die core plate, the punch-pin on the lower die core plate, the push piece mechanism in the lower die core plate, be set to it is described under Pressure block above mold core plates；The die plate insert and the punch-pin shape forming cavity are provided with for heat dissipation in the punch-pin Through-hole, the through-hole is interior to be arranged cooling fin.

2. a kind of liquid silica gel injecting molding die according to claim 1, it is characterised in that: the die plate insert is under Heating bar is equipped in mold core plates.

3. a kind of liquid silica gel injecting molding die according to claim 1, it is characterised in that: the die plate insert with it is upper Mold core plates are detachably connected, and the contact surface of the two is provided with sheathing paper.

4. a kind of liquid silica gel injecting molding die according to claim 1, it is characterised in that: the push piece mechanism includes Push plate, push rod, spring portion；The push plate is between the die plate insert and lower die core plate, the push plate upper surface and lower die Core plate upper surface flushes；The push rod between push plate and spring portion, the push rod and the lower die core plate and it is described under it is heat-insulated Plate is slidably connected；The spring portion is mounted in lower die holder, and the spring portion includes spring and fixed plate, and the fixed plate is in institute It states above spring, the fixed plate is detachably connected with spring, and fixed plate is slidably connected with lower die holder；The push rod upper end and institute It states push plate to be detachably connected, the push rod lower end is detachably connected with the fixed plate.

5. a kind of liquid silica gel injecting molding die according to claim 1, it is characterised in that: the water of the upper mold core plate Square to offer venthole, position is provided among the venthole sets for connecting in venthole ontology and the punch-pin The connector for the through-hole set.

6. a kind of liquid silica gel injecting molding die according to claim 1, it is characterised in that: the punch-pin lower end is under Mold core plates are detachably connected, and the punch-pin upper end is matched with the locating slot in upper mold core plate.

7. a kind of liquid silica gel injecting molding die according to claim 1, it is characterised in that: the punch-pin upper surface is set It is equipped with annular groove, is equipped with sealing ring in annular groove.