Intermediate mold, mold device, and injection molding machine

Abstract

The invention relates to an intermediate mold, a mold device and an injection molding machine, which can improve the maintainability of the intermediate mold forming the mold device. An intermediate mold (10) disposed between a fixed-side mold and a movable-side mold in a mold device of an injection molding machine is provided with: a support member (12) and a support member (13) that detachably support both sides of a rotating shaft (200) of a rotating mold part; and a connection member (14) which is detachably connected to the upper side in the vertical direction with respect to the support member (12) and the support member (13), and which, when the mold part is attached and detached from the support member (12) and the support member (13), attaches and attaches the mold part from a space formed by detaching the connection member (14) from the support member (12) and the support member (13).

Description

Technical Field

[0001] This application claims priority based on Japanese Patent Application No. 2023-138914 filed on August 29, 2023. The entire contents of the Japanese Patent Application are incorporated herein by reference.

[0002] The invention relates to an intermediate mold, a mold device and an injection molding machine. Background Art

[0003] As a mold device constituting an injection molding machine, there is a mold device in which an intermediate mold is arranged between a fixed side mold and a movable side mold. In addition, as an intermediate mold, there is a mold that can rotate while being pivotally supported on a support frame (for example, Patent Document 1). This intermediate mold is removed from the support frame and taken out to the outside of the injection molding machine during maintenance.

[0004] Patent Document 1: Japanese Patent No. 4283181

[0005] Since the supporting frame constituting the intermediate mold is a one-piece structure in the past, in order to take the intermediate mold out of the injection molding machine, the intermediate mold is sometimes decomposed into multiple plates. However, in this case, it is necessary to arrange the components of the sealed piping path on the plate mating surface. If the size of the intermediate mold is increased to ensure this arrangement position, the size of the injection molding machine will also have to be increased. In addition, if the intermediate mold cannot be decomposed into multiple parts due to design, even if the intermediate mold is removed from the supporting frame, the supporting frame will become an obstacle and the intermediate mold cannot be taken out of the injection molding machine. Summary of the invention

[0006] An object of the present invention is to improve the maintainability of an intermediate mold constituting a mold device.

[0007] The present invention completed based on the above-mentioned purpose is an intermediate mold, which is an intermediate mold arranged between a fixed side mold and a movable side mold in a mold device of an injection molding machine, and is characterized in that it comprises: a supporting portion that can support both sides of a rotating axis of a rotating mold portion in a loading and unloading manner; and a connecting component that can be connected to the upper side in the up and down direction in a loading and unloading manner relative to the supporting portion, and when the mold portion is loaded and unloaded from the supporting portion, the mold portion is loaded and unloaded from a space formed by removing the connecting component from the supporting portion.

[0008] 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.

[0009] Furthermore, the support portion may be separable into the first support member, the second support member, and a connecting member for positioning the first support member and the second support member.

[0010] Furthermore, the support portion may be an integral structure and fixed to the injection molding machine.

[0011] Furthermore, the support portion may detachably support shaft bodies detachably mounted on both sides of the mold portion.

[0012] Furthermore, the support portion may detachably support both sides of a shaft body passing through the mold portion.

[0013] Furthermore, a tool for fixing the connection member and the mold portion may be detachable from the connection member and the mold portion.

[0014] Furthermore, the present invention is a mold device for an injection molding machine, characterized in that an intermediate mold arranged between a fixed side mold and a movable side mold comprises: a support portion that can support both sides of a rotating axis of a rotating mold portion in a loadable and removable manner; and a connecting component that can be connected to the upper side in the up and down direction relative to the support portion in a loadable and removable manner, and when loading and unloading the mold portion from the support portion, the mold portion is loaded and unloaded from a space formed by removing the connecting component from the support portion.

[0015] Furthermore, the present invention is an injection molding machine equipped with a mold device, wherein the mold device is composed of a fixed side mold, a movable side mold and an intermediate mold arranged between the fixed side mold and the movable side mold, and the injection molding machine is characterized in that the intermediate mold has: a support portion that can support both sides of the rotating axis of the rotating mold portion in a loadable and removable manner; and a connecting component that can be connected to the upper side in the up and down direction relative to the supporting portion in a loadable and removable manner, and when the mold portion is loaded and unloaded from the supporting portion, the mold portion is loaded and unloaded from a space formed by removing the connecting component from the supporting portion.

[0016] Effects of the Invention

[0017] According to the present invention, the maintainability of the intermediate mold constituting the mold device can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view showing an example of the external appearance structure of the injection molding machine and a part of the mold device mounted on the injection molding machine according to the first embodiment.

[0019] Figure 2 It is a cross-sectional view showing an example of the structure of the intermediate mold of the mold device.

[0020] Figure 3 (A) is a stereoscopic view showing an example of the appearance structure of the supporting parts, connecting parts and connecting parts among the multiple parts constituting the intermediate mold, and (B) is a front view showing an example of the appearance structure of the supporting parts, connecting parts and connecting parts among the multiple parts constituting the intermediate mold.

[0021] Figure 4 This is a diagram showing the state of the attachment and detachment work when the intermediate mold is maintained.

[0022] Figure 5 It is a cross-sectional view showing an example of the external appearance structure of the intermediate mold of the mold device according to the second embodiment.

[0023] Figure 6 It is a cross-sectional view showing an example of the structure of the intermediate mold of the mold device according to the third embodiment.

[0024] Explanation of symbols

[0025] 1: Mold device, 10: Intermediate mold, 11, 51, 61: Rotating frame, 12, 13, 52, 53, 62, 63: Support component, 14, 54, 64: Connecting component, 15, 55, 65: Connecting component, 16, 17, 56, 66, 67: Shaft, 20: Movable side mold, 30: Fixed side mold, 100: Injection molding machine, 111, 511, 611: Upper side, 112, 512, 612: Lower side, 113, 513, 613: First side, 114, 514, 614: Second side, 115, 116, 516, 616: Plates, 200, 500, 600: Rotating axis. DETAILED DESCRIPTION

[0026] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0027] <First embodiment>

[0028] (Structure of injection molding machine)

[0029] Figure 1 It is a perspective view showing an example of the external appearance structure of each of the injection molding machine 100 according to the first embodiment and a part of the mold device 1 mounted on the injection molding machine 100 .

[0030] Figure 2 It is a cross-sectional view showing an example of the structure of the intermediate mold 10 of the mold device 1.

[0031] Figure 3 (A) is a perspective view showing an example of the external appearance structure of the support members 12 and 13 , the connecting member 14 , and the connecting member 15 among the plurality of members constituting the intermediate die 10 . Figure 3 Center (B) is a front view showing an example of the external appearance structure of the support members 12 and 13 , the connecting member 14 , and the connecting member 15 among the plurality of members constituting the intermediate die 10 .

[0032] Figure 1 The injection molding machine 100 shown is a molding machine for injection blow molding. Injection blow molding refers to a molding method that performs injection molding (injection molding) and blow molding in two stages. In injection blow molding, a preform that is a prototype of a product is first molded in injection molding (injection molding). Then, in blow molding, air is fed into the interior of the preform to expand it, thereby molding a product.

[0033] The injection molding machine 100 is equipped with a mold device 1 capable of performing injection blow molding. The mold device 1 is configured to include a fixed mold 30, a movable mold 20, and an intermediate mold 10 disposed between the fixed mold 30 and the movable mold 20. The mold device 1 performs injection molding (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.

[0034] like Figure 1 and Figure 2 As shown, the intermediate mold 10 has a mold part, a support part, a connecting member 14, and shafts 16 and 17. The mold part has a rotating frame 11 and plates 115 and 116 composed of a plurality of mold plates. The support part has supporting members 12 and 13 and a connecting member 15. The rotating frame 11 in the mold part is a metal frame that rotates by a rotating shaft 200, and is composed of an upper side part 111, a lower side part 112, a first side part 113, and a second side part 114, which are connected by bolts or the like.

[0035] In addition, plates 115 and 116 composed of plates of a plurality of molds are detachably mounted on the rotating frame 11. In the present embodiment, the rotating frame 11 is described as a rotating frame (the boundary lines of the components are not shown) assembled from the plate-like upper side portion 111, the lower side portion 112, the first side portion 113, and the second side portion 114, but the upper side portion 111, the lower side portion 112, the first side portion 113, and the second side portion 114 may be formed integrally or by assembling a plurality of parts.

[0036] The shaft body 16 that rotates by the rotating shaft 200 is detachably mounted on the first side portion 113 of the rotating frame body 11. Furthermore, the shaft body 17 that rotates by the rotating shaft 200 is detachably mounted on the second side portion 114 of the rotating frame body 11. After the bearings (not shown) provided on the rotating frame body 11 and the supporting members 12 and 13 are removed toward the outside, the shaft bodies 16 and 17 are removed toward the outside of the rotating frame body 11.

[0037] In the mold part, when the rotating frame 11 rotates by the rotating shaft 200, the plates 115 also rotate together with it. By rotating the rotating frame 11 with the plates 115 installed, the position for injection molding and the position for blow molding are alternately replaced. In addition, the plates 116 are detachably mounted on the rotating frame 11 via a component not shown. However, unlike the plates 115, the plates 116 are non-rotatable.

[0038] like Figure 2 and Figure 3 As shown, the support member 12 is a support member that can detachably support the first side portion 113 of the rotating frame 11. The support member 12 has a bearing portion 121 that can detachably support the shaft body 16 installed on the first side portion 113 of the rotating frame 11. In addition, the support member 12 has a through hole 122 for sliding a connecting rod (not shown) that guides the opening and closing action of the mold. The through hole 122 is a hole that penetrates in a direction orthogonal to the axial direction (the direction of mold opening and closing), and is arranged near the upper and lower ends of the support member 12 in the up and down direction. In addition, a connecting member 14 and a connecting member 15 are detachably connected to the support member 12. The support member 12 is fixed to the inside of the injection molding machine 100 via the connecting member 15.

[0039] like Figure 2 and Figure 3 As shown, the support component 13 is a support component that can detachably support the second side portion 114 of the rotating frame body 11. The support component 13 has a bearing portion 131 that can detachably support the shaft body 17 installed on the second side portion 114 of the rotating frame body 11. In addition, the support component 13 has a through hole 132 for sliding the connecting rod. The through hole 132 is a hole that penetrates in a direction orthogonal to the axial direction and is provided near the respective ends of the upper and lower sides of the support component 13. In addition, the connecting component 14 and the connecting component 15 are detachably connected to the support component 13. The support component 13 is fixed inside the injection molding machine 100 via the connecting component 15.

[0040] The connection member 14 is a member detachably connected to the upper sides of the support member 12 and the support member 13. The connection portion between the connection member 14 and the support member 12 and the connection portion between the connection member 14 and the support member 13 are detachably connected by bolts 141.

[0041] The connecting member 15 is a member that is detachably connected to the lower side of the supporting member 12 and the supporting member 13, and is detachably fixed inside the injection molding machine 100. Therefore, the supporting member 12 and the supporting member 13 connected to the connecting member 15 are each 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 for positioning the supporting member 12 and the supporting member 13.

[0042] The shaft body 16 and the shaft body 17 are components that rotate via the rotating shaft 200. The shaft body 16 is supported by the bearing portion 121 of the support member 12 in a state of being mounted on the first side portion 113 of the rotating frame body 11. The shaft body 17 is supported by the bearing portion 131 of the support member 13 in a state of being mounted on the second side portion 114 of the rotating frame body 11. A driving portion (not shown) that rotates the shaft body 17 is connected to the shaft body 17.

[0043] The rotating frame 11, the supporting member 12, the supporting member 13, the connecting member 14, the connecting member 15, the shaft 16, and the shaft 17 constituting the intermediate mold 10 can be separated. Therefore, for example, when the plates 115 and 116 mounted on the rotating frame 11 are maintained, the shafts 16 and 17 mounted on the supporting member 12 and the supporting member 13, respectively, and the connecting member 14 are removed. If the connecting member 14 is removed, a space can be secured on the upper side of the intermediate mold 10.

[0044] If space is ensured on the upper side of the intermediate mold 10, the rotating frame 11 with the plates 115 and 116 installed can be taken out and maintained by using the space. Figure 1 The upper cover of the injection molding machine 100 shown slides, and the rotating frame 11 with the plates 115 and 116 installed is taken out from the space opened by the sliding for maintenance. In addition, sometimes a window 40 for visually recognizing the interior is provided on the upper cover, but when the window 40 has an area sufficient for maintenance, the window 40 can be opened and the rotating frame 11 with the plates 115 and 116 installed can be taken out from the window 40 for maintenance. For details of the specific work when taking out the rotating frame 11 with the plates 115 and 116 installed, refer to Figure 4 This will be described later.

[0045] Figure 4 This is a diagram showing a state of attachment and detachment work when the intermediate die 10 is maintained.

[0046] exist Figure 41 shows a portion of the intermediate mold 10 on which a tool for connecting the intermediate mold 10 with a lifting bar 92 is installed. The lifting bar 92 supports the upper side portion 111 of the intermediate mold 10 from the lower side in the vertical direction to stabilize the posture when the rotating frame 11 is pulled up. Figure 4 In order to easily observe the state of the tool being installed, the support member 12 is omitted (refer to Figure 2 ) and plate type 115 (reference Figure 1 Figure 2 (B) shows the diagram of the process.

[0047] When performing maintenance on the intermediate mold 10, the upper side 111 of the rotating frame 11 and the connecting member 14 are connected and fixed by installing the cylindrical tool 90 on the intermediate mold 10. In addition, the lifting rod 92 and the plate 116 are connected and fixed by installing the cylindrical tool 96. The tool 90 is installed using the bolt 91, and the tool 96 is installed using the bolt 97. Thus, the plate 116 and the plate 115 (hereinafter referred to as the plate 115) not shown in the figure are fixed. Figure 4 ) is fixed to the lifting rod 92 via a tool 96, and the lifting rod 92 is fixed to the upper side portion 111 and the connecting member 14 via a bolt 91 and a tool 90.

[0048] That is, in order to remove the plates 116 and the like from the intermediate mold 10 during maintenance, it is necessary to form a state where the shaft bodies 16 and 17 are removed, but the upper side portion 111, the lower 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, as described above, the plates 116 and the like are fixed to the lifting rod 92 via the tool 96, and the lifting rod 92 is fixed to the upper side portion 111 and the connecting member 14 via the bolt 91 and the tool 90. The connecting member 14 is larger than the supporting members 12 and 13, so that the plates 116 and the like can be supported even in a state where the shaft bodies 16 and 17 are not present.

[0049] With the above structure, the rotating frame 11 and the connecting member 14 with the plate 116 etc. installed can be taken out as a whole. Also, the rotating frame 11 can be prevented from rotating when being taken out or moved. Figure 4 In the example, the upper side portion 111 of the rotating frame 11 and the connecting member 14 are connected using the tool 90, but the present invention is not limited thereto. For example, the upper side portion 111 of the rotating frame 11 and the lifting rod 92 may be connected. In this case, the rotating frame 11 and the connecting member 14 can be taken out separately from the upper space formed by removing the connecting member 14.

[0050] Then, if Figure 4As shown, the lifting rod 92 is arranged at a position that can support the upper side portion 111 of the rotating frame 11 from the lower side. In addition, a sling 93 is installed at both ends of the lifting rod 92. And, the hook 95 of the crane 94 is hung on the sling 93, respectively, so that it can be pulled up.

[0051] Next, the shaft 16 is removed from the first side portion 113 of the rotating frame 11, and the shaft 17 is removed from the second side portion 114 of the rotating frame 11. Furthermore, the connecting member 14 is removed from the supporting members 12 and 13. As a result, the combination of the rotating frame 11 to which the plates 116 and the like are installed and the connecting member 14 becomes free to face upward, and sufficient space is ensured on the upper side of the intermediate mold 10. Next, the rotating frame 11 to which the plates 116 and the like are installed and the connecting member 14 are pulled up as a whole using the crane 94, and taken out to the outside of the injection molding machine 100. Specifically, the rotating frame 11 to which the plates 116 and the like are installed and the connecting member 14 are pulled up from the window portion 40 (refer to Figure 1 ) to the outside. Then, start maintenance.

[0052] If the maintenance is completed, the tool 90 is installed again on the upper side 111 of the rotating frame 11 and the connecting component 14. In addition, the lifting rod 92 is arranged on the lower side of the upper side 111, and the tool 96 is installed on the lifting rod 92 and the plate 116. Then, the rotating frame 11 and the connecting component 14 installed with the plate 116 and the like are pulled up as a whole using the crane 94, and returned to the inside of the injection molding machine 100. Specifically, it is returned to the inside from the window portion 40 of the injection molding machine 100. Then, the rotating frame 11 and the connecting component 14 are installed on the supporting components 12 and 13 fixed to the injection molding machine 100, and finally the lifting rod 92 and the tool 90 are removed. Thus, the loading and unloading work when performing maintenance on the intermediate mold 10 is completed.

[0053] In summary, the intermediate mold, the mold device, and the injection molding machine to which the present invention is applied may adopt various embodiments as long as the following structures are adopted.

[0054] That is, the intermediate mold 10 involved 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 characterized in that it comprises: a supporting part (supporting component 12, supporting component 13 and connecting component 15) that can support the two sides (first side part 113 and second side part 114) of the rotating axis 200 of the rotating mold part (rotating frame 11 equipped with plate 115) in a loadable and removable manner; and a connecting component 14 that can be connected to the upper side in the up and down direction relative to the supporting part in a loadable and removable manner, and when the mold part is loaded and unloaded from the supporting part, the mold part is loaded and unloaded from the space formed by removing the connecting component 14 from the supporting part (the space formed on the upper side of the intermediate mold 10).

[0055] Thus, the connection member 14 connected to the upper side of the support portion of the rotating shaft 200 supporting the mold portion can be attached and detached, and when the mold portion is attached and detached from the support portion, the mold portion is attached and detached from the space formed by removing the connection member 14 from the support portion. As a result, a space for taking the mold portion out of the injection molding machine 100 during maintenance can be ensured on the upper side. In addition, the connection member 14 and the mold portion can be taken out as a whole, so the maintainability is improved.

[0056] Furthermore, compared with an injection molding machine in which the intermediate mold is decomposed into multiple plates in order to remove the intermediate mold from the outside of the injection molding machine and loaded and unloaded in directions other than the upper side (for example, the axial direction, the direction of mold opening and closing), and an injection molding machine in which the parts of the mold part that supports the intermediate mold from both sides by bearings are decomposed and loaded and unloaded in directions other than the upper side, it is superior in that the mold part can be loaded and unloaded from the space on the upper side formed by removing the connecting part 14.

[0057] Furthermore, unlike the case where the intermediate mold is disassembled into a plurality of plates in order to remove the intermediate mold from the injection molding machine, since it is not necessary to arrange the components for sealing the piping paths on the plate mating surfaces, it is not necessary to increase the size of the intermediate mold 10 in order to ensure the arrangement position of the components for sealing the piping paths. As a result, the size of the intermediate mold 10 can be made compact, and thus the size of the injection molding machine 100 can also be made compact.

[0058] Here, the support portion may be separable into a support member 12 for supporting the first side of the rotating shaft 200 and a support member 13 for supporting the second side of the rotating shaft 200 , and may be fixed to the injection molding machine 100 .

[0059] Thus, the support portion is fixed to the injection molding machine in a state where it can be separated into the support member 12 and the support member 13 , so that attachment and detachment of the shaft body during maintenance of the mold portion is facilitated.

[0060] Furthermore, the support portion may be separable into the support member 12 , the support member 13 , and the connecting member 15 for positioning the support member 12 and the support member 13 .

[0061] Thus, the support portion can be separated into the support member 12, the support member 13, and the connecting member 15, and the connecting member 15 positions the support member 12 and the support member 13. As a result, even if the support member 12 and the support member 13 are separated during maintenance of the mold portion, for example, the installation work after maintenance becomes easy.

[0062] Furthermore, the support portion may be an integral structure (a structure not separated into the support member 12 , the support member 13 , and the connecting member 15 ) and fixed to the injection molding machine 100 .

[0063] Thus, since the support portion is an integral structure and is fixed to the injection molding machine 100, even if the mold portion is taken out to the outside of the injection molding machine 100 for maintenance, the support portion remains fixed inside the injection molding machine 100. As a result, for example, even if a connecting rod passes through the support portion, the mold portion can be maintained outside the injection molding machine 100 while maintaining this state.

[0064] Furthermore, the support portion may detachably support each of the shaft bodies 16 and 17 detachably attached to both sides of the mold portion.

[0065] Thus, the support portion detachably supports the shaft bodies 16 and 17 detachably mounted on both sides of the die portion. At this time, since the shaft body is not inserted into the die portion, there is no need to insert or remove the shaft body during maintenance.

[0066] Furthermore, the tool 90 for fixing the connection member 14 and the mold portion may be detachable from the connection member 14 and the mold portion.

[0067] Thus, when the connecting member 14 and the mold portion are removed from the support portion, they can be taken out as a whole.

[0068] Furthermore, the mold device 1 involved in the first embodiment is a mold device of an injection molding machine 100, characterized in that the intermediate mold 10 arranged between the fixed side mold 30 and the movable side mold 20 comprises: a supporting portion (supporting member 12, supporting member 13 and connecting member 15) which can support both sides (first side portion 113 and second side portion 114) of a rotating shaft 200 of a rotating mold portion (a rotating frame 11 on which a plate 115 is installed) in a loadable and removable manner; and a connecting member 14 which can be connected to the upper side in the up and down direction relative to the supporting portion in a loadable and removable manner, and when the mold portion is loaded and unloaded from the supporting portion, the mold portion is loaded and unloaded from a space formed by removing the connecting member 14 from the supporting portion (a space formed on the upper side of the intermediate mold 10).

[0069] Thus, the connection member 14 connected to the upper side of the support portion of the rotating shaft 200 supporting the mold portion can be attached and detached, and when the mold portion is attached and detached from the support portion, the mold portion is attached and detached from the space formed by removing the connection member 14 from the support portion. As a result, a space for taking the mold portion out of the injection molding machine 100 during maintenance can be ensured on the upper side. In addition, the connection member 14 and the mold portion can be taken out as a whole, so the maintainability is improved.

[0070] Furthermore, compared with an injection molding machine in which the intermediate mold is decomposed into multiple plates in order to remove the intermediate mold from the outside of the injection molding machine and loaded and unloaded in directions other than the upper side (for example, the axial direction, the direction of mold opening and closing), and an injection molding machine in which the parts of the mold part that supports the intermediate mold from both sides by bearings are decomposed and loaded and unloaded in directions other than the upper side, it is superior in that the mold part can be loaded and unloaded from the space formed by removing the connecting part 14.

[0071] Furthermore, unlike the case where the intermediate mold is disassembled into a plurality of plates in order to remove the intermediate mold from the injection molding machine, since it is not necessary to arrange the components for sealing the piping paths on the plate mating surfaces, it is not necessary to increase the size of the intermediate mold 10 in order to ensure the arrangement position of the components for sealing the piping paths. As a result, the size of the intermediate mold 10 can be made compact, and thus the size of the injection molding machine 100 can also be made compact.

[0072] Furthermore, the injection molding machine 100 involved in the first embodiment is an injection molding machine equipped with a mold device 1, and the mold device 1 is composed 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. The injection molding machine is characterized in that the intermediate mold 10 has: a support part (a support member 12, a support member 13 and a connecting member 15) that can support both sides of the rotating shaft 200 of the rotating mold part in a loadable and unloadable manner (a first side part 113 and a second side part 114); and a connecting member 14 that can be connected to the upper side in the up-down direction relative to the supporting part in a loadable and unloadable manner. When the mold part is loaded and unloaded from the supporting part, the mold part is loaded and unloaded from the space formed by removing the connecting member 14 from the supporting part (a space formed on the upper side of the intermediate mold 10).

[0073] Thus, the connection member 14 connected to the upper side of the support portion of the rotating shaft 200 supporting the mold portion can be attached and detached, and when the mold portion is attached and detached from the support portion, the mold portion is attached and detached from the space formed by removing the connection member 14 from the support portion. As a result, a space for taking the mold portion out of the injection molding machine 100 during maintenance can be ensured on the upper side. In addition, the connection member 14 and the mold portion can be taken out as a whole, so the maintainability is improved.

[0074] Furthermore, compared with an injection molding machine in which the intermediate mold is decomposed into multiple plates in order to remove the intermediate mold from the outside of the injection molding machine and loaded and unloaded in directions other than the upper side (for example, the axial direction, the direction of mold opening and closing), and an injection molding machine in which the parts of the mold part that supports the intermediate mold from both sides by bearings are decomposed and loaded and unloaded in directions other than the upper side, it is superior in that the mold part can be loaded and unloaded from the space formed by removing the connecting part 14.

[0075] Furthermore, unlike the case where the intermediate mold is disassembled into a plurality of plates in order to remove the intermediate mold from the injection molding machine, since it is not necessary to arrange the components for sealing the piping paths on the plate mating surfaces, it is not necessary to increase the size of the intermediate mold 10 in order to ensure the arrangement position of the components for sealing the piping paths. As a result, the size of the intermediate mold 10 can be made compact, and thus the size of the injection molding machine 100 can also be made compact.

[0076] <Second embodiment>

[0077] Figure 5 It is a cross-sectional view showing an example of the structure of the intermediate mold 50 of the mold device according to the second embodiment.

[0078] For example, as mentioned above Figure 2 As shown, the rotating frame 11 of the intermediate mold 10 according to the first embodiment is configured such that the shafts 16 and 17 are respectively mounted on the first side portion 113 and the second side portion 114. In contrast, the rotating frame 51 of the intermediate mold 50 according to the second embodiment is configured such that the shaft 56 penetrates the first side portion 513, the plate 516, and the second side portion 514.

[0079] The shaft 56 is a member that rotates via the rotating shaft 500. The shaft 56 is supported by the bearing 521 of the support member 52 and the bearing 531 of the support member 53 in a state of penetrating the rotating frame 51 and the plates 516. A driving unit (not shown) that rotates the shaft 56 is connected to the shaft 56.

[0080] In addition, the structures of the support member 52, the support member 53, the connecting member 54 and the connecting member 55 involved in the second embodiment are the same as the structures of the support member 12, the support member 13, the connecting member 14 and the connecting member 15 involved in the first embodiment. That is, the support member 52 is a member having a bearing portion 521 that supports the first side portion 513 of the rotating frame body 51 via the shaft body 56 and a through hole 522 for sliding a connecting rod (not shown). And the support member 53 is a member having a bearing portion 531 that supports the second side portion 514 of the rotating frame body 51 via the shaft body 56 and a through hole 532 for sliding a connecting rod.

[0081] Furthermore, the connecting member 54 is a member that can be detachably connected to the upper side of the supporting member 52 and the supporting member 53. The connecting portion between the connecting member 54 and the supporting member 52 and the connecting portion between the connecting member 54 and the supporting member 53 are each detachably connected by bolts (not shown). Furthermore, the connecting member 55 is a member that can be detachably connected to the lower side of the supporting member 52 and the supporting member 53, and is detachably fixed to the injection molding machine 100 (refer to Figure 1The connecting member 55 functions as a member for positioning the supporting member 52 and the supporting member 53.

[0082] The rotating frame 51, the supporting member 52, the supporting member 53, the connecting member 54, the connecting member 55, and the shaft 56 constituting the intermediate mold 50 are separable. Therefore, when the plate 516 mounted on the rotating frame 51 and the plate (hereinafter referred to as "plate 516, etc.") not shown in the figure that rotates together with the rotating frame 51 are maintained, the shaft 56 that penetrates the supporting member 52, the rotating frame 51, the plate 516, and the supporting member 53 is pulled out, and the connecting member 54 is removed from the supporting members 52 and 53. If the connecting member 54 is removed, a space can be secured on the upper side of the intermediate mold 50.

[0083] If space is ensured on the upper side of the intermediate mold 50, the rotating frame 51 with the plates 516 etc. installed can be taken out and maintained by using the space. Figure 1 The rotating frame 51 with the plate 516 etc. installed can be taken out through the window 40 on the upper side of the injection molding machine 100 shown in the figure for maintenance. In addition, the details of the specific work when taking out the rotating frame 51 with the plate 516 etc. installed are basically the same as the work of using the above-mentioned Figure 4 The contents of the description are the same, so the description is omitted.

[0084] That is, the intermediate mold 50 involved in 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 comprises: a supporting portion (supporting member 52, supporting member 53 and connecting member 55) capable of loading and unloading the two sides (first side portion 513 and second side portion 514) of the rotating shaft 500 of the rotating mold portion (a rotating frame 51 not shown in the figure on which a plate-like rotating frame 51 is installed that rotates together with the rotating frame 51); and a connecting member 54 capable of being loaded and unloaded at the upper side in the up and down direction relative to the supporting portion, and when loading and unloading the mold portion from the supporting portion, the mold portion is loaded and unloaded from the space formed by removing the connecting member 54 from the supporting portion (the space formed on the upper side of the intermediate mold 50).

[0085] Here, the support portion may detachably support both sides (the first side portion 513 and the second side portion 514 ) of the mold portion via a shaft body 56 penetrating the mold portion.

[0086] Thus, the support portion detachably supports both sides of the mold portion via the shaft 56 that penetrates the mold portion, thus being different from a structure in which shafts are respectively installed on both sides of the mold portion (for example, Figure 2 Therefore, the two times of loading and unloading work of loading and unloading the shaft body on both sides of the mold part during maintenance can be reduced to one time.

[0087] <Third embodiment>

[0088] For example, as mentioned above Figure 2 As shown, the rotating frame 11 of the intermediate mold 10 involved in the first embodiment is configured such that, for each of the first side portion 113 and the second side portion 114, each of the shaft bodies 16 and 17 is inserted into each of the bearing portions 121 and 131 of the support members 12 and 13 from the inner side of the intermediate mold 10 through each of the first side portion 113 and the second side portion 114 of the rotating frame 11, and is installed on each of the first side portion 113 and the second side portion 114, but the present invention is not limited thereto. For example, it is also possible to Figure 6 As shown in the figure, each shaft body does not penetrate the first side portion and the second side portion.

[0089] Figure 6 It is a cross-sectional view showing an example of the structure of the intermediate mold 60 of the mold device according to the third embodiment.

[0090] Figure 6 The intermediate mold 60 shown is configured so that the mold portion (the rotating frame 61 to which the plates 616 and the plates not shown rotating together with the rotating frame 61 are mounted) can be removed while the shafts 66 and 67 are supported by the bearings 621 and 631, respectively. At this time, the shafts 66 and 67 are detachably mounted on the mold portion from the outside.

[0091] Specifically, the end of the shaft body 66 is detachably fixed to the first side portion 613 of the rotating frame body 61 by bolts or the like, and the end of the shaft body 67 is detachably fixed to the second side portion 614 of the rotating frame body 61 by bolts or the like. An unillustrated accommodation space capable of accommodating the inner end of each of the shaft bodies 66 and 67 is provided in each of the bearing parts 621 and 631. Thus, when the mold part is removed, the shaft bodies 66 and 67 are removed from the mold part and accommodated in the accommodation space, so that each of the shaft bodies 66 and 67 can be retracted from the respective tracks of the first side portion 613 and the second side portion 614 of the rotating frame body 61. As a result, it is not necessary to remove each of the shaft bodies 66 and 67 when maintaining the mold part, so that the work efficiency can be achieved.

[0092] Here, by Figure 2 In the first embodiment shown in FIG. 1 , the bearings 121 and 131 are provided with respective accommodation spaces capable of accommodating the shaft bodies 16 and 17, so that the mold unit can be removed without removing the shaft bodies 16 and 17. Figure 6 Compared with the shafts 66 and 67 of the third embodiment shown in the figure, the portions of the shafts 16 and 17 that protrude from the support portion toward the mold portion are longer, and therefore require a larger storage space. Figure 6Since the portions of the shaft bodies 66 and 67 that protrude from the support portion toward the mold portion are shorter, the accommodation space can be reduced.

[0093] and, Figure 2 The shaft bodies 16 and 17 have a portion disposed inside the mold portion, so when removing the shaft bodies 16 and 17, the first side portion 113 and the second side portion 114 of the rotating frame body 11 are sometimes divided to facilitate the removal of the shaft bodies 16 and 17. Figure 6 Since the shaft bodies 66 and 67 do not have a portion disposed inside the mold portion, the rotating frame body 61 can be easily removed without dividing the first side portion 613 and the second side portion 614. In this regard, the third embodiment is more preferable than the first embodiment.

[0094] Furthermore, a removable portion (not shown) may be provided on each of the bearings 621 and 631. In this case, after the portion is removed toward the outside, each of the shaft bodies 66 and 67 is removed toward the outside from each of the support members 62 and 63. At this time, if bolts or the like for fixing the rotating frame 61 and the shaft bodies 66 and 67 are installed from the outside, the work of removing the bolts or the like is easy.

[0095] In addition, Figure 6 In the example of the embodiment, the structures of the support member 62, the support member 63, the connecting member 64 and the connecting member 65 are the same as the structures of the support member 12, the support member 13, the connecting member 14 and the connecting member 15 involved in the first embodiment. That is, the support member 62 is a member having a bearing portion 621 that can detachably support the first side portion 613 of the rotating frame body 61 and a through hole 622 for sliding a connecting rod (not shown). In addition, the support member 63 is a member having a bearing portion 631 that can detachably support the second side portion 614 of the rotating frame body 61 and a through hole 632 for sliding a connecting rod.

[0096] Furthermore, the connecting member 64 is a member that is detachably connected to the upper side of the supporting member 62 and the supporting member 63. The connecting portion of the connecting member 64 and the supporting member 62 and the connecting portion of the connecting member 64 and the supporting member 63 are each detachably connected by bolts (not shown). Furthermore, the connecting member 65 is a member that is detachably connected to the lower side of the supporting member 62 and the supporting member 63, and is detachably fixed to the injection molding machine 100 (refer to Figure 1 The connecting member 65 functions as a member for positioning the supporting member 62 and the supporting member 63.

[0097] Here, when comparing the first to third embodiments, Figure 2 The intermediate mold 10 of the first embodiment shown in FIG. Figure 5Compared with the intermediate die 50 of the second embodiment shown in FIG. Figure 6 The intermediate mold 60 of the third embodiment shown has more rotating parts, so the weight of the plate 616 and the unillustrated plates rotating with the rotating frame 61 are applied to these parts. In terms of not having such a problem, the first embodiment and the second embodiment are more preferable than the third embodiment.

Claims

1. An intermediate mold, which is an intermediate mold arranged between a fixed side mold and a movable side mold in a mold device of an injection molding machine, characterized in that: have: A support portion that detachably supports both sides of a rotating shaft of the rotating mold portion; and The connecting member is detachably connected to the upper side in the vertical direction relative to the supporting portion. When the mold section is attached to or detached from the support section, the mold section is attached to or detached from a space formed by removing the connection member from the support section.

2. The intermediate mold according to claim 1, characterized in that: The support portion can be separated 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.

3. The intermediate mold according to claim 2, characterized in that: The support portion can be separated into the first support member, the second support member, and a connecting member for positioning the first support member and the second support member.

4. The intermediate mold according to claim 1, characterized in that: The support part is an integrated structure and is fixed to the injection molding machine.

5. The intermediate mold according to claim 1, characterized in that: The support portion detachably supports shaft bodies detachably mounted on both sides of the mold portion.

6. The intermediate mold according to claim 1, characterized in that: The support portion detachably supports both sides of a shaft body that passes through the mold portion.

7. The intermediate mold according to claim 1, characterized in that: A tool for fixing the connection member and the mold portion is made detachable from the connection member and the mold portion.

8. A mold device for an injection molding machine, characterized in that: The intermediate mold disposed between the fixed side mold and the movable side mold has: A support portion that detachably supports both sides of a rotating shaft of the rotating mold portion; and The connecting member is detachably connected to the upper side in the vertical direction relative to the supporting portion. When the mold section is attached to or detached from the support section, the mold section is attached to or detached from a space formed by removing the connection member from the support section.

9. An injection molding machine equipped with a mold device, wherein the mold device is composed 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 injection molding machine is characterized in that: The intermediate mold has: A support portion that detachably supports both sides of a rotating shaft of the rotating mold portion; and The connecting member is detachably connected to the upper side in the vertical direction relative to the supporting portion. When the mold section is attached to or detached from the support section, the mold section is attached to or detached from a space formed by removing the connection member from the support section.

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