JP4709417B2 - Injection molding machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an injection molding machine, and particularly to an injection molding machine using a mold having a cassette type configuration.
[0002]
[Prior art]
As an example of a conventional injection molding machine, the structure of a plunger injection type injection molding machine is shown in FIG. The basic configuration of such an injection molding machine is a combination of an injection mechanism that melts and injects resin and a mold clamping mechanism that holds and holds the mold, and the injection mechanism is an inline screw type. And pre-plunger type. In addition to the direct pressure method shown in FIG. 11, the mold clamping mechanism unit includes a toggle method.
[0003]
Further, although a horizontal injection molding machine is illustrated in FIG. 11, there is a vertical type injection molding machine in which the whole is upright.
[0004]
FIG. 12 is a diagram showing a typical configuration of a conventional three-plate mold, and FIG. 13 is a diagram showing a state in which the three-plate mold is opened.
[0005]
A conventional injection molding machine 100 shown in FIG. 11 is mainly composed of an injection mechanism part A and a mold clamping mechanism part B that melt and inject resin, and the injection mechanism part A is an injection mechanism part moving cylinder. 146 is moved in the direction of the mold clamping mechanism B, and the nozzle 152 is pressed against the mold spool bush 168 with a pressure that does not cause resin leakage during injection. The resin material is put in the hopper 101 and fed into the injection cylinder 150. The injection cylinder 150 of the injection mechanism part A is heated to a temperature suitable for the resin material by the band heater 151. When the injection hydraulic cylinder 145 is operated, the connected plunger 148 advances in the nozzle direction, the resin material is melted in the toe beat 149 portion, and further, the resin material is added to the spool bush 168 via the nozzle 152. Is injected into.
[0006]
The mold includes a fixed mold and a movable mold. The fixed mold includes a fixed platen 154, a fixed mounting plate 158, and a fixed mold 159, and the movable mold. Includes a movable platen 155, a movable mold plate 160, a receiving plate 161, a movable mounting plate 162, a spacer block 163, an ejector plate 164, an ejector pin 165, a spool bush 168, and a locate ring 169. In such a mold, the fixed side mounting plate 158 is fixed to the fixed side platen 154 with a bolt or the like, the movable side mounting plate 162 is fixed to the movable side platen 155 with a bolt or the like, and the movable side platen 155 is clamped. The movable side platen 155 that is connected to the hydraulic cylinder 156 and guided by the tie bar 157 by the forward / backward movement of the cylinder is moved in the left / right direction to open / close the mold.
[0007]
Further, at the time of injection, the mold is clamped with a predetermined force that does not open the mold by the clamping cylinder 156.
[0008]
After the injection cooling, the mold is opened and the molded product 166 is discharged out of the mold by the ejector pins 165.
[0009]
FIG. 12 shows a conventional three-plate mold, and a locating ring 169 that fits into a positioning hole formed in the stationary platen 154 of the injection molding machine, and the mold is attached to the stationary platen 154. The fixed side mounting plate 158 for mounting, the movable side mounting plate 162 for mounting the mold on the movable side platen 155, and the spool bush 168 in which the nozzle portion 152 of the injection molding machine is pressed to form a resin flow path. From the primary spool 167a formed on the spool bush 168 to the runner 167b formed on the stationary side template 159, and further from the secondary spool 167c. It is injected into the cavity 166 through the gate portion. The runner 167b is provided with a runner lock pin 170 for holding the spool runner on the surface of the stripper plate 171 when the gate portion is cut.
[0010]
FIG. 13 is a view showing a state in which the mold of FIG. 12 is fully opened. The parting surface of the runner portion is first opened by the action of the spring 173, and at that time, the gate portion is cut. Next, the molded parting surface is opened, and finally, the stripper plate 171 is opened, and the runner lock pin 170 comes out of the runner 167a and can be taken out.
[0011]
[Problems to be solved by the present invention]
Conventional injection molding machines have basically the same configuration for ultra-small machines with a clamping force of several tons and ultra-large machines with a clamping force of several thousand tons. A mechanism for moving the injection mechanism A forward and backward and touching the spool bush 168 of the mold is necessary, and of course, a space for forward and backward movement is also required. In addition, the arrangement and configuration of piping and wiring for movement are complicated.
[0012]
In addition, an alignment mechanism for the nozzle 152 and the spool bush 168 is required, and further, since the injection cylinder 150 enters the fixed side platen 154, a hole for receiving the locating ring 169 for aligning the mold is necessary. In addition, it is necessary to make a large hole in the stationary platen 154, which is one of the causes of greatly reducing the rigidity of the stationary platen 154.
[0013]
Furthermore, a general mold mounting method is such that the mold locating ring 169 is fitted into a hole formed in the fixed side platen 154 of the injection molding machine, and the fixed side mounting plate 158 of the mold is injection molded. A method of fixing to the fixed platen 154 of the machine with a bolt or the like is often used. Similarly, on the movable side, the movable mounting plate 162 of the mold is fixed to the movable platen 155 of the injection molding machine with a bolt or the like. At this time, it is necessary to adjust the settings of the injection molding machine such as the thickness of the mold, the mold opening amount, and the ejector amount. Moreover, it takes time to fix the bolts, and there is a problem that the reduction of the setup time does not proceed.
[0014]
The cassette type is used for the above problems, but it is a system in which a holder for fixing the cassette type to a general injection molding machine is attached to the platen of the injection molding machine, and injection molding is performed. There is a problem that it is necessary to mount a mold holder inside the tie bar of the machine, and there is a problem that only a cassette mold smaller than the size of the injection molding machine can be mounted, and the mold holder is also expensive.
[0015]
In addition, the 3-plate mold requires a spool runner lock mechanism, complicates the mold structure, and requires parts such as stripper plates, runner lock pins, and hairpins, making the mold expensive. And the size will also increase.
[0016]
At present, the injection molding machine and the mold are handled separately, and there are various wastes in terms of structure. Moreover, the mold has the same structure regardless of the size of the injection molding machine, and there is no structural device adapted to the size of the injection molding machine.
[0017]
The present invention eliminates such problems in the prior art, eliminates waste by having the mold function on the injection molding machine side, and is structurally devised in accordance with the size of the injection molding machine, It is an object of the present invention to provide an injection molding machine having a compact mold structure that greatly reduces costs.
[0018]
[Means for Solving the Problems]
In order to achieve the above object, an injection molding machine of the present invention includes an injection mechanism that melts and injects resin, and a mold clamping mechanism that attaches a mold composed of a fixed mold plate and a movable mold plate. In the injection molding machine having the above, the mold clamping mechanism section attaches the fixed side plate holder to which the fixed side template is attached, the fixed side platen to which the fixed side template holder is attached, and the movable side template. A movable side plate holder as a movable side platen; Before closing the mold that closes between the stationary platen and the stationary template holder, Move between the stationary platen and the stationary template holder, Hold the runner after molding The fixed-side platen and the runner-locking mechanism that moves to the outside of the fixed-side template holder are configured.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, the injection mechanism part is fixed and held in a form that does not require movement in consideration of heat insulation, on the stationary side platen of the mold clamping mechanism part. At this time, the accuracy of the nozzle position is obtained by fitting the nozzle tip portion into a hole formed in the stationary platen. At the same time, the nozzle tip surface is flattened, and the amount of protrusion at the nozzle tip portion is strictly adjusted to touch the inlet of the spool portion provided in the mold in a flat shape. At this time, since the mold is pressed against the fixed platen by the clamping force, the resin does not leak during injection. By fixing the injection cylinder part to the stationary platen via the heat insulating plate, heat transfer from the injection cylinder part to the stationary platen part is minimized. Further, the nozzle portion also minimizes heat transfer by making the contact portion with the stationary platen only the nozzle tip portion.
[0030]
Moreover, the mold structure is made a simple cassette type by incorporating a mold mechanism on the mold clamping mechanism side.
[0031]
The fixed side platen can be eliminated by incorporating the mechanism that holds the fixed side template on the injection molding machine side, and at the same time, the fixed side platen and the fixed side template are held in order to support a gate system such as a pinpoint gate. Between the plates to be opened, a spring or the like is used to open the mold first. Moreover, a stop bolt for restricting the opening amount is incorporated. Furthermore, in order to deal with pinpoint gates, etc., the stripper plate of the mold can be abolished by allowing the member that doubles as the lock mechanism and take-out of the runner to enter and exit the mold using a cylinder etc. The runner lock pin can also be eliminated.
[0032]
Furthermore, the movable side of the mold is also provided with a shape of a cassette mold that holds the movable side mold plate of the mold on the movable side mold plate holder as the movable side platen of the injection molding machine, and a shape that receives the mold receiving plate portion. Thus, a structure in which the clamping force is applied to the mold part can be obtained.
[0033]
The ejector eliminates a special protruding mechanism as a structure that works when the mold is fully opened.
[0034]
Other objects, features and advantages of the present invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.
[0035]
Hereinafter, some embodiments of the injection molding machine of the present invention will be described in detail with reference to the drawings.
[0036]
Example 1
FIG. 1 is a view of an injection molding machine viewed from the front of an example in which the present invention is implemented by a plunger injection system of a vertical injection molding machine, FIG. 2 is a side view of the injection molding machine of FIG. 1, and FIG. It is a front view which shows the state which the metal mold | die opened.
[0037]
The injection molding machine of the present invention shown in FIG. 1 is mainly composed of an injection mechanism part A and a mold clamping mechanism part B.
[0038]
As shown in FIGS. 1 to 3, in the injection molding machine of the present invention, first, the injection mechanism part A includes two hoppers 1 in which a resin material is put, and two pieces that are installed upright from the stationary platen 12. An injection hydraulic cylinder 2 fixed on an injection hydraulic cylinder fixing plate 4 fixed on a fixed pole 5, an injection plunger 3-connected to a rod of the injection hydraulic cylinder 2, and a hopper 1. The injection cylinder 7 is supplied with resin through the jacket 6 and fixed on the stationary platen 12 through the heat insulating plate 11, and the injection cylinder 7 is controlled to a predetermined temperature according to the resin material to be used. And a band heater 8 wound around.
[0039]
The mold clamping mechanism B of the injection molding machine according to the present invention includes a stationary platen 12, a stationary mold plate holder 13 that holds the stationary platen 12 and the stationary mold plate 19 of the mold, A movable side mold plate holder 14 as a movable side platen for holding the movable side mold plate 20, a mold clamping side hydraulic cylinder 17 for applying a clamping force so as to open and close the mold, and a movable side mold plate holder 14. And a mold clamping side cylinder connecting portion 16 for connecting the mold clamping side hydraulic cylinder 17.
[0040]
The mold of the injection mechanism B in the injection molding machine of the present invention is composed of a fixed mold and a movable mold, and the fixed mold includes a fixed platen 12, a fixed mold holder 13, and the fixed mold. The movable mold includes a movable mold holder 14, a movable mold 20, a receiving plate 21, an ejector pin 22, a return pin 23, and an ejector plate 24. The movable-side template holder 14 is connected to the clamping hydraulic cylinder 17 via the clamping-side cylinder connecting portion 16, and the movable-side template holder 14 guided by the tie bar 15 by the vertical movement of the rod is moved up and down. The mold is configured to be opened and closed by moving in the direction. Moreover, the movable side template holder 14 acts suitably as a movable side platen.
[0041]
As described above, the mold clamping mechanism B in the injection molding machine of the present invention holds the fixed side platen 12, the fixed side mold plate holder 13 that holds the fixed side mold plate 19 of the mold, and the movable side of the mold. The movable mold holder 14, the movable mold mold 20, the receiving plate 21, the ejector pin 22, the return pin 23, the ejector plate 24, and the mold clamping force are applied. The movement of the mold clamping side hydraulic cylinder 17, the mold movable side mold plate holder 14 and the mold clamping side cylinder connecting portion 16 for coupling the mold clamping side hydraulic cylinder 17, and the movement of the movable side mold plate holder 14 are guided. The four tie bars 15 are fixed on an angle 18 that holds the whole.
[0042]
In the side view of the injection molding machine of the present invention in FIG. 2, a runner lock take-out bar 28, a runner separation plate 27, a runner lock take-out pneumatic cylinder 26, and a runner lock take-out unit fixing plate 25 are shown. Yes. Furthermore, FIG. 3 shows a tip opening spring 29 for the fixed-side template holder, a stopper bolt 30 of the fixed-side template holder 13, a molded product 31, and a protruding rod 32.
[0043]
FIG. 4 is an enlarged cross-sectional view of the side view shown in FIG. 2, showing an example of a pinpoint gate system.
[0044]
As shown in the drawing, the resin material supplied from the hopper 1 into the injection cylinder 7 heated by the band heater 8 is melted at the toe beat 33 portion by the advancement of the injection plunger 3 in the nozzle direction. It was sent to the nozzle 35 fitted with a minimum contact area in the hole provided on the mold contact surface side of the platen 12, and the nozzle needle valve 37 was opened to be provided on the fixed mold plate 19 of the mold. It is injected into the runner part 38. The resin then passes through the runner portion 38, passes through the secondary spool 38a, and passes through the gate portion to form the molded product 31. The runner portion 38 is composed of a runner shape provided on the fixed side mold plate 19 of the mold and a shape provided on the runner lock take-out bar 28 shown in FIGS. 2 and 4, and the tapered shape of the runner portion 38. A portion 38a is formed on the runner lock take-out bar 28, and the runner portion 38 is held when the mold shown in FIG. 5 is opened, and the gate is cut. The runner lock take-out bar 28 can be opened and closed without any problem by forming a shape for determining the position of the mold when the mold is clamped. At the same time, the runner lock take-out bar 28 is fixed by a positioning pin or a block so as not to move by the injection pressure. In the initial stage of mold opening, the fixed-side template holder 13 is opened before the parting surface on which the molded product 31 is located by the action of the fixed-side front opening spring 29. The opening amount is determined by the fixed side template holder stopper bolt 30. The fixed-side template holder 13 and the movable-side template holder 14 may be replaced with the first opening spring 29 by providing a parting lock mechanism.
[0045]
In such an injection molding machine of the present invention, the nozzle 35 of the injection cylinder 7 is incorporated in the stationary platen 12. The shape of the tip of the nozzle 35 is formed on a flat surface, and the protruding state of the surface of the fixed side platen 12 in contact with the mold can be adjusted within a range of about −0.3 mm to 0.3 mm in the molded state. It is preferable to be determined as follows. When the protruding state of the tip portion of the nozzle 35 is −0.3 mm or less, it is not preferable because the recessed portion is excessively recessed and the recessed gap with the surface in contact with the mold becomes large. Therefore, the gap formed between the surface and the surface in contact with the mold becomes too large, which is not preferable. Therefore, it is preferable that the gap is adjusted and maintained within the above range.
[0046]
In FIG. 6, the runner lock take-out bar 28 moves out of the mold when the runner lock take-out pneumatic cylinder 26 is operated. At this time, the runner portion 38 is moved by the runner separation plate 27. Separated from. After separation, the runner lock removal bar 28 is returned to the mold. At the same time, when the ejector connecting bar 44 moves upward in a state where the mold is opened, the molded article 31 pushes the ejector projection rod 32 to push the ejector plate 24 of the mold, and the molded article 31 is ejected from the ejector pin 22. Is pushed out of the mold. The ejector projecting lot 32 incorporates a projecting rod return spring 41 and is pushed back to the initial position as the mold is closed. A return pin 23 and an ejector plate return spring 39 are also incorporated in the mold, and act to return the ejector pin 22 to the initial position.
[0047]
( reference Example)
FIG. 7 is a view showing another embodiment of the injection molding machine of the present invention when used in a two-plate type direct gate. In this embodiment, the basic configuration of the injection molding machine is substantially the same as that in the first embodiment.
[0048]
As shown in the figure, the injection molding machine according to the present invention includes an injection mechanism part A and a mold clamping mechanism part B. The injection mechanism part A includes a hopper 1 in which a resin material is placed, a fixed side platen. 12, an injection hydraulic cylinder 2 fixed on an injection hydraulic cylinder fixing plate 4 fixed to a fixed pole 5 standing from 12, an injection plunger 3 connected to a rod of the injection hydraulic cylinder 2, and a hopper An injection cylinder 7 that is supplied with resin from 1 through a jacket 6 and is fixed on a stationary platen 12 via a heat insulating plate 12, and an injection cylinder that is controlled to a predetermined temperature according to the resin material to be used. 7 and a band heater 8 wound around the periphery of 7.
[0049]
The injection mechanism B also holds the fixed side platen 12, the fixed side platen 12 that holds the fixed side platen 12 and the fixed side mold plate 19 of the mold, and the movable side mold plate 20 of the mold. A movable mold plate holder 14 as a movable platen, a mold clamping hydraulic cylinder 17 for applying a clamping force so as to open and close the mold, a movable mold holder 14 and a mold clamping hydraulic cylinder 17 are provided. And a mold clamping side cylinder coupling portion 16 to be coupled.
[0050]
The mold of the injection mechanism B in the present invention is composed of a fixed mold and a movable mold, and the fixed mold is a fixed platen 12, a fixed mold holder 13, and a fixed mold 19. The movable mold includes a movable mold holder 14, a movable mold 20, a receiving plate 21, an ejector pin 22, a return pin 23, and an ejector plate 24. A mold plate holder 14 is connected to a mold clamping hydraulic cylinder 17 via a mold clamping side cylinder connecting portion 16, and a movable side mold plate guided by a tie bar 15 by vertical movement of the rod of the hydraulic cylinder 17 in the vertical direction. The mold is opened and closed by moving the holder 14 in the vertical direction.
[0051]
As described above, the mold clamping mechanism B in the injection molding machine of the present invention holds the fixed side platen 12, the fixed side mold plate holder 13 that holds the fixed side mold plate 19 of the mold, and the movable side of the mold. The movable side platen holder 14 as a movable side platen to be connected, the mold clamping side hydraulic cylinder 17 for applying a force for closing and closing the mold, and the movable side plate holder 14 and the clamping side hydraulic cylinder 17 are connected. For this purpose, the mold clamping side cylinder connecting portion 16 and four tie bars 15 for guiding the movement of the movable side template holder 14 are fixed on an angle 18 that holds these members as a whole.
[0052]
In the present invention, the runner lock take-out mechanism is not used when a direct gate or a side gate is used. Accordingly, the molten resin is injected directly from the nozzle 35 onto the spool provided on the stationary side template. The resin that has passed through the spool 43 forms a molded product 42. After the cooling is completed, the mold is opened, and the molded product 42 is removed by a take-out robot or a manpower. At the time of mold opening, in FIG. 8, the fixed-side template holder 13 is opened as in the pinpoint gate or the like. However, the fixed-side template holder 13 may be fixed so as not to open on the fixed-side platen 12.
[0053]
Further, in this embodiment, the example of the vertical injection molding machine adopting the plunger injection system has been described. I do not care.
[0054]
As described above, in the injection molding machine of the present invention, the injection cylinder of the injection mechanism is fixed to the stationary platen with the heat insulating plate interposed therebetween, and the nozzle tip connected to the injection cylinder is fixed to the stationary platen. Integration with the fixed side platen can be realized by minimizing heat transfer to the fixed side platen by fitting the hole in the mold contact surface with a minimum contact area. There is no need for a cylinder or nozzle alignment mechanism for moving the injection mechanism. In addition, since the holes provided in the stationary platen can be minimized, it is possible to prevent the rigidity of the stationary platen from being lowered.
Naturally, since it is not necessary to move the injection mechanism, the size of the injection molding machine can be made small and compact. In addition, the tip of the nozzle is also fitted with the fixed platen, so there is no risk of displacement, so it can be flat, and at the same time the mold side can be flat, and the clamping mechanism side In addition, the mold structure is greatly simplified by providing a fixed-side template holder and making the shape of the movable-side template holder as a movable-side platen so that the movable-side template can be directly held. I can do it. As a result, the mold can be configured as a so-called cassette mold, and the mold cost can be greatly reduced. Furthermore, a runner lock take-out mechanism corresponding to the pinpoint gate called the conventional three-plate system is adopted. This makes it possible to eliminate the runner stripper plate and the runner lock pin, simplify the mold structure, make the cassette type compatible with the two-plate gate system with the same configuration, The mold setup time can be greatly reduced.
[0055]
【The invention's effect】
An injection molding machine according to claim 1 of the present invention includes an injection mechanism that melts and injects a resin, In an injection molding machine having a mold clamping mechanism portion for mounting a mold composed of a fixed side mold plate and a movable side mold plate, the mold clamping mechanism portion includes a fixed side mold plate holder for mounting the fixed side mold plate, A fixed side platen to which the fixed side template holder is attached; a movable side platen holder as a movable side platen to which the movable side plate is attached; and the fixed side platen and the fixed side platen that are held by the fixed side platen. When the mold opens between the side template holders, Move between the stationary platen and the stationary template holder, A runner lock mechanism that holds the runner after molding and moves out of the fixed side platen and the fixed side template holder. Therefore, the injection mechanism is fixed to the stationary platen with a heat insulating plate in between, and the tip of the nozzle connected to the injection cylinder is fitted into the hole drilled in the mold contact surface of the stationary platen with a minimum contact area. This minimizes the heat transfer to the fixed platen and can be integrated with the fixed platen, eliminating the need for a cylinder and nozzle alignment mechanism for moving the injection mechanism, The number of holes provided in the platen can be minimized, the rigidity of the stationary platen can be prevented from being lowered, and a compact mold structure can be produced.
[0057]
The injection molding machine according to claim 2 of the present invention is The injection mechanism includes an injection cylinder, the movable side template holder includes the movable side template, a receiving plate, and an ejector member, and the movable side template holder is connected to a clamping side hydraulic cylinder. The mold is opened and closed Therefore, the mold structure can be simplified and configured compactly, and the setup time of the mold can be greatly shortened.
[0059]
Claims of the invention 3 The described injection molding machine The runner lock mechanism has a runner lock take-out bar that forms a part of the runner together with the runner shape provided on the fixed side mold plate of the mold. Since it did in this way, the setup time of a metal mold | die can also be shortened significantly.
[Brief description of the drawings]
FIG. 1 is a front view of an entire vertical injection molding machine showing a typical embodiment of the present invention.
FIG. 2 is a side view of the embodiment of FIG.
FIG. 3 is a view showing a state in which a mold is opened in the embodiment of FIG. 1;
4 is an enlarged cross-sectional view centering on a mold part in the side view of FIG. 2, showing an embodiment in a pinpoint gate system, and a hatched part indicates a mold.
5 is a cross-sectional view showing a state in which a mold is opened in the cross-sectional view of FIG. 4;
6 is a view showing a state in which it is discharged out of the runner mold in FIG. 5. FIG.
FIG. 7 is an enlarged cross-sectional view of the center of the mold part in the side view of FIG. 2, and is a diagram showing another embodiment of the direct gate method.
8 is a view showing a state in which a mold is opened in the cross-sectional view of FIG. 7;
FIG. 9 is an enlarged view of a side portion of a runner lock portion.
FIG. 10 is a view of a runner lock portion viewed from the front.
FIG. 11 is a view showing a conventional injection molding machine.
FIG. 12 is a diagram showing a cross section of a conventional three-plate mold.
13 is a view showing a state in which the three-plate mold in FIG. 12 is opened.
[Explanation of symbols]
1 Hopper
2 Hydraulic cylinder for injection
3 Injection plunger
4 Hydraulic cylinder fixing plate for injection
5 Paul
6 Jacket
7 Injection cylinder
8 band heater
9 Fixing bolt
10 Flange
11 Insulation board
12 Fixed platen
13 Fixed side template holder
14 Movable side template holder
15 Tie Bar
16 Clamping cylinder connecting part
17 Clamping hydraulic cylinder
18 angle
19 Cassette type fixed side template
20 Cassette type movable side template
21 Cassette type receiving plate
22 Cassette type ejector pin
23 Cassette type return pin
24 Cassette type ejector plate
25 Runner lock removal unit fixing plate
26 Pneumatic cylinder for removing runner lock
27 Runner separation plate
28 Runner lock removal bar
29 Fixed side template holder tip opening spring
30 Fixed side template holder stopper bolt
31 Molded products
32 Protruding rod
33 Tobeat
34 Nozzle band heater
35 nozzles
36 Nozzle spring
37 Needle valve
38 runners
38a Secondary spool
38b Runner taper
38c Nozzle mouth
39 Ejector plate return spring
40 Return pin
41 Protruding rod return spring
42 Molded products
43 spools
44 Ejector connection bar
45 Hydraulic cylinder for injection
46 Cylinder for moving injection unit
47 Guide rod for moving the injection unit
48 Injection plunger
47 Tobeat
50 injection cylinder
51 Heater band for injection cylinder
52 nozzles
53 Nozzle heater
54 Fixed Platen
55 Movable platen
56 Hydraulic cylinder for clamping
57 Tie Bar
58 Fixed side mounting plate
59 Fixed side template
60 Movable side template
61 Back plate
62 Movable side mounting plate
63 Spacer block
64 Ejector plate
65 ejector pin
66 cavity
67 Spool Runner
67a Primary spool
67b Runner
67c Secondary spool
68 Spool bush
69 Locate Ring
70 Runner Lock Pin
71 Stripper plate
72 Spring
73 Puller Bolt

Claims (3)

In an injection molding machine having an injection mechanism that melts and injects resin, and a clamping mechanism that attaches a mold composed of a fixed-side mold plate and a movable-side mold plate,
The mold clamping mechanism section includes a fixed-side template holder for attaching the fixed-side template,
A stationary platen to which the stationary template holder is attached;
A movable side plate holder as a movable side platen to which the movable side plate is attached;
Before closing the mold that closes between the fixed side platen and the fixed side template holder, the fixed side platen moves between the fixed side platen and the fixed side template holder and holds a runner after molding , A runner lock mechanism that moves out of the fixed-side template holder;
An injection molding machine comprising:   The injection mechanism section includes an injection cylinder, the movable side template holder includes the movable side template, a receiving plate, and an ejector member, and the movable side template holder is connected to a mold clamping side hydraulic cylinder. 2. The injection molding machine according to claim 1, wherein the mold is opened and closed.   3. The injection molding machine according to claim 1, wherein the runner lock mechanism has a runner lock take-out bar that forms a part of the runner together with a runner shape provided on a fixed mold plate of the mold. .

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