Intermediate mold, mold apparatus and injection molder

Abstract

To improve maintainability of an intermediate mold composing a mold apparatus.SOLUTION: An intermediate mold 10 arranged between a stationary side mold and a movable side mold in a mold apparatus of an injection molder includes: support members 12 and 13 removably supporting both sides of a rotation axis 200 of a mold part which is rotating; and a joint member 14 removably connected to a top side in a vertical direction to the support members 12 and 13. When removing the mold part from the support members 12 and 13, a mold part is mounted / dismounted utilizing a space formed by removing the joint member 14 from the support members 12 and 13.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an intermediate mold, a mold apparatus, and an injection molding machine. [Background technology]

[0002] In some mold assemblies constituting an injection molding machine, an intermediate mold is disposed between a fixed mold and a movable mold. In some intermediate molds, the intermediate mold is rotatable while being supported by a support frame (for example, Patent Document 1). During maintenance, such intermediate molds are removed from the support frame and taken out of the injection molding machine. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4283181 Summary of the Invention [Problem to be solved by the invention]

[0004] Since the support frame constituting the conventional intermediate mold is an integral structure, the intermediate mold may be disassembled into multiple plates in order to remove it from the injection molding machine. In this case, however, it is necessary to place a member for sealing the piping path on the mating surface of the plates, and if the size of the intermediate mold is increased to secure a place for placing the member, the size of the injection molding machine must also be increased. Furthermore, if the intermediate mold cannot be disassembled into multiple members due to design reasons, even if the intermediate mold is removed from the support frame, the support frame gets in the way and the intermediate mold cannot be removed from the injection molding machine.

[0005] An object of the present invention is to improve the maintainability of an intermediate mold that constitutes a mold device. [Means for solving the problem]

[0006] The present invention, which was completed with this objective in mind, is an intermediate mold arranged between a fixed mold and a movable mold in a mold device of an injection molding machine, and is characterized in that it comprises a support part that detachably supports both sides of the rotation axis of a rotating mold part, and a connecting member that is detachably connected to the top side in the vertical direction of the support part, and when the mold part is detached from the support part, the mold part is detached from the space formed by removing the connecting member from the support part. Here, the support portion may be separable into a first support member that supports one side of the rotating shaft and a second support member that supports the other side of the rotating shaft, and may be fixed to the injection molding machine. The support portion may be separable into the first support member, the second support member, and a connecting member that positions the first support member and the second support member. The support portion may be of one piece construction and fixed to the injection molding machine. The support portion may detachably support shaft bodies detachably attached to both sides of the mold portion. The support portion may detachably support both sides of a shaft that passes through the mold portion. In addition, a jig that fixes the connection member and the mold part may be detachable from the connection member and the mold part. The present invention also relates to a mold device for an injection molding machine, wherein an intermediate mold arranged between a fixed side mold and a movable side mold comprises a support part which detachably supports both sides of the rotation axis of a rotating mold part, and a connecting member which is detachably connected to the top side in the vertical direction of the support part, and when the mold part is detached from the support part, the mold part is detached from a space formed by removing the connecting member from the support part. The present invention also relates to an injection molding machine equipped with a mold device consisting of a fixed side mold, a movable side mold, and an intermediate mold arranged between the fixed side mold and the movable side mold, wherein the intermediate mold comprises a support part that detachably supports both sides of the rotation axis of a rotating mold part, and a connecting member that is detachably connected to the top side in the vertical direction of the support part, and wherein when the mold part is detached from the support part, the mold part is detached from a space formed by removing the connecting member from the support part. Effect of the Invention

[0007] According to the present invention, it is possible to improve the maintainability of the intermediate mold that constitutes the mold device. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view showing an example of the external configuration of an injection molding machine according to a first embodiment and a part of a mold device mounted on the injection molding machine; [Diagram 2] FIG. 2 is a cross-sectional view showing an example of a configuration of an intermediate mold of a mold device. [Diagram 3] 1A is a perspective view showing an example of the external configuration of a support member, a connection member, and a coupling member among the multiple members constituting the intermediate mold, and FIG. 1B is a front view showing an example of the external configuration of a support member, a connection member, and a coupling member among the multiple members constituting the intermediate mold. [Figure 4] 13A and 13B are diagrams showing the state of attachment and detachment operations when performing maintenance on an intermediate mold. [Diagram 5] FIG. 11 is a front view showing an example of an external configuration of an intermediate die of a die apparatus according to a second embodiment. [Figure 6] FIG. 11 is a cross-sectional view showing an example of a configuration of an intermediate die of a die apparatus according to a third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. <First embodiment> (Configuration of injection molding machine) FIG. 1 is a perspective view showing an example of the external configuration of an injection molding machine 100 according to the first embodiment and a part of a mold device 1 mounted on the injection molding machine 100. As shown in FIG. FIG. 2 is a cross-sectional view showing an example of the configuration of the intermediate mold 10 of the mold device 1. As shown in FIG. Fig. 3(A) is a perspective view showing an example of the external configuration of support members 12 and 13, connection member 14, and linking member 15 among the multiple members that make up intermediate mold 10. Fig. 3(B) is a front view showing an example of the external configuration of support members 12 and 13, connection member 14, and linking member 15 among the multiple members that make up intermediate mold 10.

[0010] The injection molding machine 100 shown in Fig. 1 is a molding machine used for injection blow molding. Injection blow molding is a molding technique that performs injection molding and blow molding in two stages. In injection blow molding, a preform that serves as the prototype of the product is first molded in injection molding. Then, in blow molding, air is pumped into the preform to expand it, thereby molding the product.

[0011] The injection molding machine 100 is equipped with a mold device 1 that enables injection blow molding. The mold device 1 is configured to include a fixed mold 30, a movable mold 20, and an intermediate mold 10 arranged between the fixed mold 30 and the movable mold 20. The mold device 1 performs injection molding by clamping the fixed mold 30 and the intermediate mold 10, and performs blow molding by clamping the movable mold 20 and the intermediate mold 10.

[0012] As shown in Figures 1 and 2, the intermediate mold 10 has a mold section, a support section, a connection member 14, and shaft bodies 16 and 17. The mold section has a rotary frame 11 and plates 115 and 116 consisting of a plurality of mold plates. The support section has support members 12 and 13, and a connecting member 15. The rotary frame 11 in the mold section is a metal frame that rotates on a rotary shaft 200 and is composed of a top side section 111, a bottom side section 112, a first side section 113, and a second side section 114, which are connected by bolts or the like.

[0013] In addition, plates 115 and 116 consisting of a plurality of mold plates are removably attached to the rotary frame 11. In this embodiment, the rotary frame 11 is described as being assembled from a plate-shaped top portion 111, bottom portion 112, first side portion 113, and second side portion 114 (boundaries between the respective portions are not shown), but the top portion 111, bottom portion 112, first side portion 113, and second side portion 114 may be integrally formed, or may be formed by assembling a plurality of parts.

[0014] A shaft body 16 that rotates on a rotating shaft 200 is removably attached to a first side portion 113 of the rotating frame 11. A shaft body 17 that rotates on a rotating shaft 200 is removably attached to a second side portion 114 of the rotating frame 11. The shaft bodies 16 and 17 are removed toward the outside of the rotating frame 11 after bearings (not shown) provided on the rotating frame 11 and the support members 12 and 13, respectively, are removed toward the outside.

[0015] In the mold section, when the rotary frame 11 rotates on the rotary shaft 200, the plates 115 also rotate together with it. As the rotary frame 11 to which the plates 115 are attached rotates, a position where injection molding is performed and a position where blow molding is performed alternately switch positions. The plates 116 are detachably attached to the rotary frame 11 via a member (not shown). However, unlike the plates 115, the plates 116 are configured not to rotate.

[0016] As shown in FIG. 2 and FIG. 3, the support member 12 is a support member that detachably supports the first side portion 113 of the rotary frame 11. The support member 12 has a bearing portion 121 that detachably supports the shaft body 16 attached to the first side portion 113 of the rotary frame 11. The support member 12 also has a through hole 122 for sliding a tie bar (not shown) that guides the opening and closing operation of the mold. The through hole 122 is a hole that penetrates in a direction perpendicular to the axial direction (the direction in which the mold opens and closes), and is provided near each end of the top side and the bottom side in the top-bottom direction of the support member 12. The connection member 14 and the coupling member 15 are also detachably connected to the support member 12. The support member 12 is fixed inside the injection molding machine 100 via the coupling member 15.

[0017] As shown in FIG. 2 and FIG. 3, the support member 13 is a support member that detachably supports the second side portion 114 of the rotary frame 11. The support member 13 has a bearing portion 131 that detachably supports the shaft body 17 attached to the second side portion 114 of the rotary frame 11. The support member 13 also has a through hole 132 for sliding the tie bar. The through hole 132 is a hole that penetrates in a direction perpendicular to the axial direction, and is provided near each end of the top side and the bottom side of the support member 13. The connection member 14 and the coupling member 15 are also detachably connected to the support member 13. The support member 13 is fixed inside the injection molding machine 100 via the coupling member 15.

[0018] The connecting member 14 is a member detachably connected to the top sides of the supporting members 12 and 13. The connecting portion between the connecting member 14 and the supporting member 12 and the connecting portion between the connecting member 14 and the supporting member 13 are both detachably connected by bolts 141.

[0019] The connecting member 15 is a member that is detachably connected to the bottom sides of the support members 12 and 13, and is detachably fixed inside the injection molding machine 100. Therefore, each of the support members 12 and 13 connected to the connecting member 15 is fixed to a predetermined position inside the injection molding machine 100 via the connecting member 15. Therefore, the connecting member 15 functions as a member that positions the support members 12 and 13.

[0020] Shaft body 16 and shaft body 17 are members that rotate by a rotating shaft 200. Shaft body 16 is supported by a bearing portion 121 of support member 12 in a state where it is attached to a first side portion 113 of rotating frame 11. Shaft body 17 is supported by a bearing portion 131 of support member 13 in a state where it is attached to a second side portion 114 of rotating frame 11. A drive unit (not shown) that rotates shaft body 17 is connected to shaft body 17.

[0021] The rotary frame 11, support members 12, support members 13, connection members 14, coupling members 15, shaft bodies 16, and shaft bodies 17 that constitute the intermediate mold 10 are separable. For this reason, for example, when performing maintenance on the plates 115 and 116 attached to the rotary frame 11, the shaft bodies 16 and 17 attached to the support members 12 and 13, respectively, and the connection member 14 are removed. When the connection member 14 is removed, a space can be secured on the top side of the intermediate mold 10.

[0022] When a space is secured on the top side of the intermediate mold 10, the rotary frame 11 to which the plates 115 and 116 are attached is taken out using the space, and maintenance is performed. Specifically, the top cover of the injection molding machine 100 shown in FIG. 1 is slid open, and the rotary frame 11 to which the plates 115 and 116 are attached is taken out from the space opened by the sliding, and maintenance is performed. Note that the top cover may be provided with a window 40 for visually checking the inside, and when the window 40 is large enough to perform maintenance, the window 40 may be opened, and the rotary frame 11 to which the plates 115 and 116 are attached may be taken out from there, and maintenance may be performed. Details of the specific work performed when taking out the rotary frame 11 to which the plates 115 and 116 are attached will be described later with reference to FIG. 4.

[0023] FIG. 4 is a diagram showing the state of attachment and detachment work when performing maintenance on the intermediate mold 10. As shown in FIG. 4 shows a part of the intermediate mold 10 on which a jig is attached for connecting the intermediate mold 10 to a lifting bar 92 that stabilizes the lifted state, such as the posture when the rotary frame 11 is lifted to the top side by supporting the top side portion 111 of the intermediate mold 10 from the bottom side in the vertical direction. Note that in FIG. 4, the support member 12 (see FIG. 2) and the plates 115 (see FIG. 1(B)) are omitted in order to make it easier to see the state in which the jig is attached.

[0024] When performing maintenance on the intermediate mold 10, a cylindrical jig 90 is attached to the intermediate mold 10 to connect and fix the top side portion 111 of the rotary frame 11 and the connecting member 14. Also, a cylindrical jig 96 is attached to connect and fix the lifting bar 92 and the plates 116. The jig 90 is attached using a bolt 91, and the jig 96 is attached using a bolt 97. As a result, the plates 116 and the plates 115 (not shown) (hereinafter referred to as "plates 116, etc." in the explanation of FIG. 4) are fixed to the lifting bar 92 via the jig 96, and the lifting bar 92 is fixed to the top side portion 111 and the connecting member 14 via the bolt 91 and the jig 90.

[0025] That is, in order to remove the plates 116 and the like from the intermediate mold 10 during maintenance, it is necessary to create a state in which the shaft bodies 16 and 17 are removed, but the top side portion 111, the bottom side portion 112, the first side portion 113, and the second side portion 114 of the rotating frame 11 and the plates 116 and the like are placed on the shaft bodies 16 and 17. Here, the plates 116 and the like are fixed to the lifting bar 92 via the jig 96, as described above, and the lifting bar 92 is fixed to the top side portion 111 and the connecting member 14 via the bolts 91 and the jig 90. The connecting member 14 is larger than the support members 12 and 13, and therefore can support the plates 116 and the like even in a state in which the shaft bodies 16 and 17 are not present.

[0026] With the above configuration, the rotating frame 11 to which the plates 116 and the like are attached and the connecting member 14 can be removed as a unit. In addition, the rotating frame 11 can be prevented from rotating when being removed or moved. In the example of FIG. 4, the top side portion 111 of the rotating frame 11 and the connecting member 14 are connected using a jig 90, but this is not limiting. For example, the top side portion 111 of the rotating frame 11 may be connected to a lifting bar 92. In this case, the connecting member 14 can be removed separately from the space on the top side formed by removing the connecting member 14.

[0027] Next, as shown in Fig. 4, a lifting bar 92 is placed in a position where the top side 111 of the rotating frame 11 can be supported from the ground side. Lifting devices 93 are attached to both ends of the lifting bar 92. Hooks 95 of a crane 94 are hung on the lifting devices 93, respectively, so that the lifting bar 92 can be pulled up to the top side.

[0028] Next, the shaft body 16 is removed from the first side portion 113 of the rotary frame 11, and the shaft body 17 is removed from the second side portion 114 of the rotary frame 11. Also, the connection member 14 is removed from the support members 12 and 13. This allows the combination of the rotary frame 11 to which the plates 116 and the like are attached and the connection member 14 to be free to face upward, and ensures sufficient space on the upper side of the intermediate mold 10. Next, the rotary frame 11 to which the plates 116 and the connection member 14 are attached is lifted up as a unit using the crane 94, and removed to the outside of the injection molding machine 100. Specifically, it is removed to the outside through the window portion 40 (see FIG. 1) of the injection molding machine 100. After that, maintenance is started.

[0029] When the maintenance is completed, the jig 90 is attached again to the top side portion 111 of the rotary frame 11 and the connection member 14. Also, the lifting bar 92 is placed on the bottom side of the top side portion 111, and the jig 96 is attached again to the lifting bar 92 and the plates 116. Then, the rotary frame 11 and the connection member 14 to which the plates 116 and the like are attached are lifted up as a unit using the crane 94 and returned to the inside of the injection molding machine 100. Specifically, they are returned to the inside through the window portion 40 of the injection molding machine 100. Then, the rotary frame 11 and the connection member 14 are attached to the support members 12 and 13 fixed to the injection molding machine 100, and finally the lifting bar 92 and the jig 90 are removed. This completes the attachment and detachment work for performing maintenance on the intermediate mold 10.

[0030] In summary, the intermediate mold, mold device, and injection molding machine to which the present invention is applied may have the following configurations and may take a variety of different forms. That is, the intermediate mold 10 in the first embodiment is an intermediate mold arranged between the fixed side mold 30 and the movable side mold 20 in the mold device 1 of the injection molding machine 100, and is equipped with support parts (support members 12, support members 13, and connecting members 15) that detachably support both sides (first side portion 113 and second side portion 114) of the rotation axis 200 of the rotating mold part (rotating frame body 11 to which plates 115 are attached), and a connecting member 14 that is detachably connected to the top side in the vertical direction of the support parts, and is characterized in that when the mold part is attached or detached from the support parts, the mold part is attached or detached from the space formed by removing the connecting member 14 from the support parts (space formed on the top side of the intermediate mold 10).

[0031] This makes the connection member 14 connected to the top side of the support part that supports the rotation shaft 200 of the mold part detachable, and when attaching or detaching the mold part from the support part, the mold part is detached from the space formed by removing the connection member 14 from the support part. As a result, a space can be secured on the top side for removing the mold part from the injection molding machine 100 during maintenance. Also, since the connection member 14 and the mold part can be removed as a unit, maintainability is improved.

[0032] Furthermore, compared to systems in which the intermediate mold is disassembled into multiple plates in order to be removed from the injection molding machine and attached / detached in a direction other than the top (for example, the axial direction or the direction in which the mold opens and closes), or systems in which the members that support the mold portion of the intermediate mold from both sides with bearings are disassembled and attached / detached in a direction other than the top, this system has the advantage that the mold portion can be attached / detached from the space formed on the top side by removing the connecting member 14.

[0033] Furthermore, unlike the case where the intermediate mold is disassembled into multiple plates in order to remove the intermediate mold from the injection molding machine, there is no need to place a member for sealing the piping path on the plate mating surfaces, so there is no need to increase the size of the intermediate mold 10 to ensure a place for placing a member for sealing the piping path. As a result, the size of the intermediate mold 10 can be made compact, and therefore the size of the injection molding machine 100 can also be made compact.

[0034] Here, the support portion may be separable into a support member 12 that supports a first side of the rotating shaft 200 and a support member 13 that supports a second side of the rotating shaft 200, and may be fixed to the injection molding machine 100. As a result, the support portion is fixed to the injection molding machine in a state in which it can be separated into support member 12 and support member 13, which facilitates attachment and detachment of the shaft body during maintenance of the mold portion.

[0035] In addition, the support portion may be separable into a support member 12, a support member 13, and a connecting member 15 that positions the support members 12 and 13. This allows the support section to be separated into support member 12, support member 13, and connecting member 15, and connecting member 15 determines the positions of support member 12 and support member 13. As a result, even if support member 12 and support member 13 are separated during maintenance of the mold section, for example, installation work after maintenance is facilitated.

[0036] In addition, the support portion may have an integrated structure (a structure that is not separated into support member 12, support member 13, and connecting member 15) and may be fixed to injection molding machine 100. As a result, since the support part has an integral structure and is fixed to the injection molding machine 100, even if the mold part is removed from the injection molding machine 100 for maintenance, the support part remains fixed inside the injection molding machine 100. As a result, even if a tie bar penetrates the support part, for example, the mold part can be maintained outside the injection molding machine 100 while maintaining that state.

[0037] The support portion may also detachably support each of the shafts 16 and 17 which are detachably attached to both sides of the mold portion. As a result, the support part detachably supports each of the shafts 16 and 17 that are detachably attached to both sides of the mold part. In this case, since the shafts do not penetrate the mold part, there is no need to insert or remove the shafts during maintenance.

[0038] Furthermore, the jig 90 that fixes the connection member 14 and the mold part may be detachable from the connection member 14 and the mold part. This allows the connection member 14 and the mold part to be removed as a unit when they are detached from the support part.

[0039] Moreover, the mold apparatus 1 of the first embodiment is a mold apparatus of an injection molding machine 100, in which an intermediate mold 10 arranged between a fixed side mold 30 and a movable side mold 20 is provided with support parts (support members 12, 13, and connecting members 15) that detachably support both sides (first side portion 113 and second side portion 114) of a rotation axis 200 of a rotating mold part (a rotating frame body 11 to which plates 115 are attached), and a connecting member 14 that is detachably connected to the top side in the vertical direction of the support parts, and is characterized in that when the mold part is attached or detached from the support parts, the mold part is attached or detached from a space formed by removing the connecting member 14 from the support parts (a space formed on the top side of the intermediate mold 10).

[0040] This makes the connection member 14 connected to the top side of the support part that supports the rotation shaft 200 of the mold part detachable, and when attaching or detaching the mold part from the support part, the mold part is detached from the space formed by removing the connection member 14 from the support part. As a result, a space can be secured on the top side for removing the mold part from the injection molding machine 100 during maintenance. Also, since the connection member 14 and the mold part can be removed as a unit, maintainability is improved.

[0041] Furthermore, compared to systems in which the intermediate mold is disassembled into multiple plates in order to be removed from the injection molding machine and attached / detached in a direction other than the top (for example, the axial direction or the direction in which the mold opens and closes), or systems in which the members that support the mold portion of the intermediate mold from both sides with bearings are disassembled and attached / detached in a direction other than the top, this system has the advantage that the mold portion can be attached / detached from the space formed on the top side by removing the connecting member 14.

[0042] Furthermore, unlike the case where the intermediate mold is disassembled into multiple plates in order to remove the intermediate mold from the injection molding machine, there is no need to place a member for sealing the piping path on the plate mating surfaces, so there is no need to increase the size of the intermediate mold 10 to ensure a place for placing a member for sealing the piping path. As a result, the size of the intermediate mold 10 can be made compact, and therefore the size of the injection molding machine 100 can also be made compact.

[0043] Moreover, the injection molding machine 100 according to the first embodiment is an injection molding machine equipped with a mold device 1 consisting of a fixed side mold 30, a movable side mold 20, and an intermediate mold 10 arranged between the fixed side mold 30 and the movable side mold 20, in which the intermediate mold 10 is provided with support parts (support members 12, 13, and connecting members 15) that detachably support both sides (first side portion 113 and second side portion 114) of the rotation axis 200 of the rotating mold part, and a connecting member 14 that is detachably connected to the top side in the vertical direction of the support parts, and is characterized in that when the mold part is detached from the support parts, the mold part is detached from the space formed by removing the connecting member 14 from the support parts (the space formed on the top side of the intermediate mold 10).

[0044] This makes the connection member 14 connected to the top side of the support part that supports the rotation shaft 200 of the mold part detachable, and when attaching or detaching the mold part from the support part, the mold part is detached from the space formed by removing the connection member 14 from the support part. As a result, a space can be secured on the top side for removing the mold part from the injection molding machine 100 during maintenance. Also, since the connection member 14 and the mold part can be removed as a unit, maintainability is improved.

[0045] Furthermore, compared to systems in which the intermediate mold is disassembled into multiple plates in order to be removed from the injection molding machine and attached / detached in a direction other than the top (for example, the axial direction or the direction in which the mold opens and closes), or systems in which the members that support the mold portion of the intermediate mold from both sides with bearings are disassembled and attached / detached in a direction other than the top, this system has the advantage that the mold portion can be attached / detached from the space formed on the top side by removing the connecting member 14.

[0046] Furthermore, unlike the case where the intermediate mold is disassembled into multiple plates in order to remove the intermediate mold from the injection molding machine, there is no need to place a member for sealing the piping path on the plate mating surfaces, so there is no need to increase the size of the intermediate mold 10 to ensure a place for placing a member for sealing the piping path. As a result, the size of the intermediate mold 10 can be made compact, and therefore the size of the injection molding machine 100 can also be made compact.

[0047] <Second embodiment> FIG. 5 is a cross-sectional view showing an example of the configuration of an intermediate die 50 of a die apparatus according to the second embodiment. 2, the rotary frame 11 of the intermediate mold 10 according to the first embodiment is configured so that the shafts 16 and 17 are attached to the first side portion 113 and the second side portion 114, respectively. In contrast, the rotary frame 51 of the intermediate mold 50 according to the second embodiment is configured so that the shaft 56 passes through the first side portion 513, the plates 516, and the second side portion 514.

[0048] Shaft body 56 is a member that rotates by rotating shaft 500. Shaft body 56 penetrates rotating frame 51 and plates 516, and is supported by bearing portion 521 of support member 52 and bearing portion 531 of support member 53. A drive unit (not shown) that rotates shaft body 56 is connected to shaft body 56.

[0049] The configurations of the support member 52, the support member 53, the connection member 54, and the linking member 55 according to the second embodiment are similar to the configurations of the support member 12, the support member 13, the connection member 14, and the linking member 15 according to the first embodiment described above. That is, the support member 52 is a member having a bearing portion 521 that detachably supports the first side portion 513 of the rotary frame body 51 via the shaft body 56, and a through hole 522 for sliding a tie bar (not shown). The support member 53 is a member having a bearing portion 531 that detachably supports the second side portion 514 of the rotary frame body 51 via the shaft body 56, and a through hole 532 for sliding the tie bar.

[0050] Moreover, the connecting member 54 is a member detachably connected to the top sides of the support members 52 and 53. The connection portion between the connecting member 54 and the support member 52 and the connection portion between the connecting member 54 and the support member 53 are both detachably connected by bolts (not shown). Moreover, the linking member 55 is a member detachably connected to the bottom sides of the support members 52 and 53, and is detachably fixed inside the injection molding machine 100 (see FIG. 1). The linking member 55 functions as a member for positioning the support members 52 and 53.

[0051] The rotary frame 51, support members 52, support members 53, connection members 54, coupling members 55, and shaft body 56 that constitute the intermediate mold 50 are separable. Therefore, when performing maintenance on the plates 516 attached to the rotary frame 51 and plates (not shown) that rotate together with the rotary frame 51 (hereinafter referred to as "plates 516, etc."), the shaft body 56 penetrating the support members 52, rotary frame 51, plates 516, and support members 53 is pulled out, and the connection member 54 is removed from the support members 52 and 53. When the connection member 54 is removed, a space can be secured on the top side of the intermediate mold 50.

[0052] When space is secured on the top side of the intermediate mold 10, the rotary frame 51 to which the plates 516 and the like are attached is removed using that space for maintenance. Specifically, the rotary frame 51 to which the plates 516 and the like are attached is removed from the window portion 40 on the top side of the injection molding machine 100 shown in Fig. 1 for maintenance. Note that the details of the specific operations for removing the rotary frame 51 to which the plates 516 and the like are attached are basically the same as those described above with reference to Fig. 4, except for the operation of pulling out the shaft body 56, and therefore a description thereof will be omitted.

[0053] In other words, the intermediate mold 50 of the second embodiment is an intermediate mold arranged between the fixed side mold 30 and the movable side mold 20 in the mold device 1 of the injection molding machine 100, and is characterized in that it is equipped with support parts (support members 52, support members 53, and connecting members 55) that detachably support both sides (first side portion 513 and second side portion 514) of the rotation axis 500 of a rotating mold part (rotating frame body 51 to which plates not shown that rotate together with the rotating frame body 51 are attached), and a connecting member 54 that is detachably connected to the top side in the vertical direction of the support parts, and that when the mold part is attached or detached from the support parts, the mold part is attached or detached from a space formed by removing the connecting member 54 from the support parts (a space formed on the top side of the intermediate mold 50).

[0054] Here, the support portion may detachably support both sides (first side portion 513 and second side portion 514) of the mold portion via a shaft 56 that penetrates the mold portion. As a result, the support section detachably supports both sides of the mold section via the shaft body 56 penetrating the mold section, which differs from a configuration in which shaft bodies are attached to both sides of the mold section (for example, the configuration in FIG. 2). Therefore, during maintenance, the total of two attachment and detachment operations of attaching and detaching the shaft bodies on both sides of the mold section can be reduced to one.

[0055] <Third embodiment> The rotary frame 11 of the intermediate mold 10 according to the first embodiment described above is configured such that, for example, as shown in Fig. 2 described above, the shafts 16 and 17 are inserted into the bearings 121 and 131 of the support members 13 and 14 from inside the intermediate mold 10 through the first side portion 113 and the second side portion 114 of the rotary frame 11, respectively, and attached to the first side portion 113 and the second side portion 114, respectively, but is not limited thereto. For example, as shown in Fig. 6, the shafts may be configured not to pass through the first side portion and the second side portion.

[0056] FIG. 6 is a cross-sectional view showing an example of the configuration of an intermediate die 60 of a die apparatus according to the third embodiment. 6 is configured so that the mold section (plates 616, and rotary frame 61 to which plates (not shown) that rotate together with rotary frame 61 are attached) can be removed with shafts 66 and 67 supported by bearings 621 and 631, respectively. In this case, shafts 66 and 67 are detachably attached to the mold section from the outside.

[0057] Specifically, an end of the shaft body 66 is detachably fixed to the first side part 613 of the rotary frame 61 with a bolt or the like, and an end of the shaft body 67 is detachably fixed to the second side part 614 of the rotary frame 61 with a bolt or the like. Each of the bearing parts 621 and 631 is provided with a storage space (not shown) capable of storing the inner ends of each of the shaft bodies 66 and 67. As a result, when the mold part is removed, the shaft bodies 66 and 67 can be removed from the mold part and stored in the storage space, thereby retracting each of the shaft bodies 66 and 67 from the orbits of the first side part 613 and the second side part 614 of the rotary frame 61. As a result, it is not necessary to remove each of the shaft bodies 66 and 67 during maintenance of the mold part, thereby improving the efficiency of the work.

[0058] Here, by providing a storage space capable of storing each of the shaft bodies 16 and 17 in each of the bearings 121 and 131 according to the first embodiment shown in Fig. 2 described above, it is possible to remove the mold section without removing the shaft bodies 16 and 17. However, the shaft bodies 16 and 17 have a longer portion protruding from the support section toward the mold section compared to the shaft bodies 66 and 67 according to the third embodiment shown in Fig. 6, and therefore a larger storage space is required. In contrast, the shaft bodies 66 and 67 in Fig. 6 have a shorter portion protruding from the support section toward the mold section, and therefore the storage space can be made smaller.

[0059] Furthermore, since shaft bodies 16 and 17 in Fig. 2 have portions disposed inside the mold portion, when removing shaft bodies 16 and 17, first side portion 113 and second side portion 114 of rotating frame 11 may be divided to facilitate removal of shaft bodies 16 and 17. In contrast, shaft bodies 66 and 67 in Fig. 6 do not have portions disposed inside the mold portion, so they can be easily removed without dividing first side portion 613 and second side portion 614 of rotating frame 61. In this respect, the third embodiment is preferable to the first embodiment.

[0060] Also, a removable portion (not shown) may be provided on each of the bearings 621 and 631. In this case, after removing the portion toward the outside, each of the shafts 66 and 67 is removed toward the outside from each of the support members 62 and 63. At that time, if the bolts or the like that secure the rotary frame 61 and the shafts 66 and 67 are attached from the outside, the bolts or the like can be easily removed.

[0061] 6, the configurations of the support member 62, the support member 63, the connection member 64, and the linking member 65 are similar to the configurations of the support member 12, the support member 13, the connection member 14, and the linking member 15 according to the first embodiment described above. That is, the support member 62 is a member having a bearing portion 621 that detachably supports the first side portion 613 of the rotating frame body 61, and a through hole 622 for sliding a tie bar (not shown). The support member 63 is a member having a bearing portion 631 that detachably supports the second side portion 614 of the rotating frame body 61, and a through hole 632 for sliding the tie bar.

[0062] Moreover, the connection member 64 is a member detachably connected to the top sides of the support members 62 and 63. The connection portion between the connection member 64 and the support member 62 and the connection portion between the connection member 64 and the support member 63 are both detachably connected by bolts (not shown). Moreover, the linking member 65 is a member detachably connected to the bottom sides of the support members 62 and 63, and is detachably fixed inside the injection molding machine 100 (see FIG. 1). The linking member 65 functions as a member for positioning the support members 62 and 63.

[0063] Comparing the first to third embodiments, the intermediate mold 60 according to the third embodiment shown in Fig. 6 has more rotating parts than the intermediate mold 10 according to the first embodiment shown in Fig. 2 and the intermediate mold 50 according to the second embodiment shown in Fig. 5, and therefore the weight of the plates 616 and the plates (not shown) that rotate together with the rotating frame 61 is added to those parts. In that they do not have such a problem, the first and second embodiments are preferable to the third embodiment. [Explanation of symbols]

[0064] 1...mold device, 10...intermediate mold, 11, 51, 61...rotating frame body, 12, 13, 52, 53, 62, 63...support member, 14, 54, 64...connecting member, 15, 55, 65...coupling member, 16, 17, 56, 66, 67...shaft body, 20...fixed side mold, 30...movable side mold, 100...injection molding machine, 111, 511, 611...top side portion, 112, 512, 612...bottom side portion, 113, 513, 613...first side portion, 114, 514, 614...second side portion, 115, 116, 516, 616...plates, 200, 500, 600...rotating shaft

Claims

1. An intermediate mold disposed between a fixed mold and a movable mold in a mold assembly of an injection molding machine, a support portion that detachably supports both sides of a rotation shaft of the rotating mold portion; A connection member detachably connected to the top side of the support portion in the top-bottom direction; Equipped with When the mold part is detached from the support part, the mold part is detached from a space formed by removing the connecting member from the support part. Intermediate mold.

2. the support portion is separable into a first support member that supports one side of the rotating shaft and a second support member that supports the other side of the rotating shaft, and is fixed to the injection molding machine. The intermediate mold according to claim 1 .

3. The support portion is separable into the first support member, the second support member, and a connecting member that positions the first support member and the second support member. The intermediate mold according to claim 2 .

4. The support part has an integral structure and is fixed to the injection molding machine. The intermediate mold according to claim 1 .

5. The support portion detachably supports shaft bodies detachably attached to both sides of the mold portion, The intermediate mold according to claim 1 .

6. The support portion detachably supports both sides of the shaft that penetrates the mold portion. The intermediate mold according to claim 1 .

7. The jig for fixing the connection member and the mold part is detachable from the connection member and the mold part. The intermediate mold according to claim 1 .

8. A mold device of an injection molding machine, An intermediate die disposed between the fixed die and the movable die, Support parts that detachably support both sides of a rotation shaft of the rotating mold part; A connection member detachably connected to the top side of the support portion in the top-bottom direction; Equipped with When the mold part is detached from the support part, the mold part is detached from a space formed by removing the connecting member from the support part. Mold equipment.

9. An injection molding machine equipped with a mold assembly including a fixed mold, a movable mold, and an intermediate mold disposed between the fixed mold and the movable mold, The intermediate mold is Support parts that detachably support both sides of a rotation shaft of the rotating mold part; A connection member detachably connected to the top side of the support portion in the top-bottom direction; Equipped with When the mold part is detached from the support part, the mold part is detached from a space formed by removing the connecting member from the support part. Injection molding machine.

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