Mold frame movable tie rod device

Abstract

This utility model relates to the field of mold technology, and in particular to a mold frame movable tie rod device, including a lower mold module, which includes a lower template, a lower mold core, and a lower mold cavity. A ejector plate is installed at the bottom of the lower template, and an ejector pin is installed on the lower ejector plate. The ejector pin is movably inserted into the lower mold cavity. The lower mold module is provided with a tie rod mechanism. The tie rod mechanism includes a tie rod plate installed below the ejector plate. The tie rod plate has a bottom movable hole, and an outwardly spring-back movable tie rod is installed in the bottom movable hole. The top of the movable tie rod is connected to the ejector plate. After the mold is closed and injection molded, the slider structure of the lower mold module moves outward, and then the ejector plate moves. The ejector plate approaches the lower mold core, so that the ejector pin can push the product out of the lower mold cavity, thus demolding the product. After demolding, the tie rod mechanism works, and the tie rod plate drives the movable tie rod to spring back, so that the ejector pin moves away from the lower mold cavity, allowing the slider structure to close the mold. During mold closing, the possibility of collision between the slider structure and the ejector pin can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold frame movable tie rod device. Background Technology

[0002] Mold design and manufacturing are key factors determining product quality and production efficiency. Injection molds typically consist of components such as the male mold core, female mold core, slide block, and ejector pins. Among these, the slide block and ejector pins are crucial components for realizing complex product structures and demolding functions.

[0003] There is a ejector pin device under the mold slider. During demolding, the end of the ejector pin will penetrate into the mold core area to eject the product. Then the mold will close and continue to inject the next product.

[0004] In existing molds, interference between the slider and the ejector pin structure during die casting production can lead to collisions between the slider and the ejector pin. After the mold is mounted on the die casting machine and aligned with the injection nozzle, it will also shift accordingly, making normal mold mounting and production impossible, resulting in a waste of time and production costs. Utility Model Content

[0005] The purpose of this invention is to provide a movable tie rod device for a mold frame, addressing the shortcomings of existing technologies.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] The mold frame movable tie rod device includes a lower mold module, which includes a lower template, a lower mold core, and a lower mold cavity. A demolding template is installed at the bottom of the lower template, and a demolding column is installed on the lower demolding template. The demolding column is movably inserted into the lower mold cavity. The lower mold module is provided with a tie rod mechanism that can move closer to or further away from the lower template. The tie rod mechanism includes a tie rod plate installed below the demolding template. The tie rod plate has a bottom movable hole, and a movable tie rod that springs back outward is installed in the bottom movable hole. The top of the movable tie rod is connected to the demolding template, and the demolding template can move between the lower template and the tie rod plate.

[0008] Furthermore: the top of the movable pull rod is provided with a snap-fit ​​block, and the bottom of the template is formed with a snap-fit ​​groove for the snap-fit ​​block to be inserted.

[0009] Furthermore, the tie rod mechanism also includes a support base plate installed below the tie rod plate, the tie rod plate is equipped with a rotatable disc, the edge of the disc is formed with radially arranged protrusions, and the outer wall of the movable tie rod is fitted with a guide ring that mates with the protrusions.

[0010] Furthermore: a mounting base is provided between the tie rod plate and the support base plate, a drive seat is mounted on the tie rod plate, a rotating shaft is mounted on the drive seat, a rotating disk is sleeved on the rotating shaft, and a drive motor that drives the rotating shaft to rotate is mounted on the drive seat.

[0011] Furthermore: a connecting block is provided at the bottom of the movable pull rod, and a tension spring is provided between the connecting block and the support base plate.

[0012] Furthermore: the tie plate is provided with an adjustment mechanism for adjusting the length of the demolding column. The demolding column includes a first guide column inserted into the lower mold cavity and a second guide column connected to the demolding template. An adjustment column is installed between the first guide column and the second guide column.

[0013] Furthermore: the outer wall of the first guide post is axially formed with a guide groove, the lower mold assembly forms a demolding guide hole for the first guide post to slide, the wall of the demolding guide hole is formed with a guide protrusion that slides with the guide groove, the second guide post is formed with a first threaded adjustment hole for the insertion of an adjustment post, and the adjustment post is formed with a first external thread structure that threadedly engages with the threaded adjustment hole.

[0014] Furthermore, the adjustment mechanism also includes an adjustment rod, and the template forming has an insertion hole for inserting the adjustment rod. A second guide post is installed in the insertion hole, and the inner end of the adjustment rod is connected to the second guide post.

[0015] Furthermore: a fixing plate is connected to the bottom of the template, and the fixing plate is formed with a rotating hole for the adjustment rod to pass through.

[0016] Furthermore: the tie rod plate is formed with an adjustment groove, the bottom end of the adjustment rod extends into the adjustment groove, an adjustment block is installed at the inner end of the adjustment rod, the adjustment block is formed with a fitting groove, and the support base plate is formed with a bottom groove that is coaxially aligned with the adjustment groove.

[0017] The beneficial effects of this utility model are as follows: After the mold is closed and injection is completed, the slider structure of the lower mold assembly moves outward, and then the ejector plate moves. The ejector plate moves close to the lower mold core, so that the ejector pin can push the product out of the lower mold cavity, thus demolding the product. After demolding, the tie rod mechanism works, and the tie rod plate drives the movable tie rod to rebound, so that the ejector pin moves away from the lower mold cavity, allowing the slider structure to close the mold. During mold closing, the possibility of collision between the slider structure and the ejector pin can be avoided. The overall stability of the mold is guaranteed, ensuring production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the mold structure.

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the lower mold module.

[0020] Figure 3 This is a schematic diagram of the tie rod mechanism.

[0021] Figure 4 This is a schematic diagram of the adjustment mechanism.

[0022] The reference numerals in the figures include:

[0023] 1-Lower mold module,

[0024] 11-Lower mold plate, 12-Lower mold core, 13-Lower mold cavity, 14-Spacer seat, 15-Removal mold plate

[0025] 2-Pull rod mechanism

[0026] 21-Pull rod plate, 22-Bottom movable hole, 23-Modible pull rod, 24-Snap-fit ​​block, 25-Snap-fit ​​groove,

[0027] 3-Support base plate,

[0028] 31-Mounting base, 32-Drive base, 33-Rotating shaft, 34-Rotating disk, 35-Protrusion, 36-Guide ring,

[0029] 37-Connecting block, 38-Tension spring,

[0030] 4-Adjustment mechanism

[0031] 40 - Demolding pillar, 41 - First guide pillar, 42 - Second guide pillar, 43 - Adjusting pillar

[0032] 44-Threaded adjustment hole, 45-External thread structure, 46-Guide groove, 47-Demolding guide hole,

[0033] 48-Guide protrusion,

[0034] 5-Adjusting rod,

[0035] 51-Insert hole, 52-Fixing plate, 53-Rotating hole, 54-Adjusting groove, 55-Adjusting block, 56-Matching groove

[0036] 57-Bottom groove. Detailed Implementation

[0037] The present invention will now be described in detail with reference to the accompanying drawings.

[0038] like Figure 1-4 As shown, the mold frame movable tie rod device includes a lower mold module 1, which includes a lower template 11, a lower mold core 12, and a lower mold cavity 13. A demolding template 15 is installed at the bottom of the lower template 11, and a demolding column 40 is installed on the lower demolding template 15. The demolding column 40 is movably inserted into the lower mold cavity 13. The lower mold module 1 is provided with a tie rod mechanism 2 that can move closer to or further away from the lower template 11. The tie rod mechanism 2 includes a tie rod plate 21 installed below the demolding template 15. The tie rod plate 21 has a bottom movable hole 22, and a movable tie rod 23 that springs back outward is installed in the bottom movable hole 22. The top of the movable tie rod 23 is connected to the demolding template 15. A spacer seat 14 is installed between the lower template 11 and the tie rod plate 21, and there is a gap between the lower template 11 and the tie rod plate 21 for the demolding template 15 to move.

[0039] After the mold is closed and injection molded, the slider structure of the lower mold assembly 1 moves outward, and then the ejector plate 15 moves. The ejector plate 15 moves closer to the lower mold core 12, so that the ejector pin 40 can push the product out of the lower mold cavity 13, thus demolding the product. After demolding, the tie rod mechanism 2 works, and the tie rod plate 21 drives the movable tie rod 23 to spring back, so that the ejector pin 40 moves away from the lower mold cavity 13, allowing the slider structure to close the mold. During mold closing, the possibility of collision between the slider structure and the ejector pin 40 can be avoided. The overall stability of the mold is guaranteed, ensuring production efficiency.

[0040] Furthermore, the top of the movable pull rod 23 is provided with a snap-fit ​​block 24, and the bottom of the ejector plate 15 is formed with a snap-fit ​​groove 25 for the snap-fit ​​block 24 to be inserted. The snap-fit ​​block 24 is radially arranged, and the bottom of the ejector plate 15 is formed with a connection hole for the movable pull rod 23 to be inserted. The side wall of the connection hole is formed with the snap-fit ​​groove. After the movable pull rod 23 is inserted into the connection hole, the snap-fit ​​block and the snap-fit ​​groove are radially aligned. Then, by rotating the movable pull rod 23, the pull rod can be snapped into the ejector plate 15 for easy disassembly and replacement.

[0041] It should be noted that, in one embodiment, the movable pull rod 23 is also formed with an external thread structure, and the bottom of the ejector plate 15 is formed with an internal thread hole. The movable pull rod can be connected to the ejector plate 15 by means of threaded connection, and can also be disassembled and replaced.

[0042] Furthermore, the tie rod mechanism 2 also includes a support base plate 3 installed below the tie rod plate 21. The tie rod plate 21 is equipped with a rotatable rotating disk 34. The edge of the rotating disk 34 is formed with radially arranged protrusions 35. The outer wall of the movable tie rod 23 is fitted with a guide ring 36 that mates with the protrusions 35. When demolding is required, the rotating disk 34 rotates one revolution, and the protrusions 35 of the rotating disk 34 will contact the guide ring 36 of the movable tie rod 23, thereby pushing the movable tie rod 23 to move. The demolding template 15 then moves towards the lower mold core 12, at which point the product can be separated from the lower mold cavity 13, thus achieving demolding.

[0043] Furthermore, a mounting base 31 is provided between the tie rod plate 21 and the support base plate 3. A drive seat 32 is mounted on the tie rod plate 21, and a rotating shaft 33 is mounted on the drive seat 32. A rotating disk 34 is sleeved on the rotating shaft 33. A drive motor that drives the rotating shaft 33 to rotate is mounted on the drive seat 32. Each time the drive motor works, it rotates one revolution, causing the rotating disk 34 to rotate one revolution. The rotating disk 34 rotates one revolution, and through the protrusion 35, it contacts the guide ring 36 of the movable tie rod 23, driving the demolding column 40 to move, thereby realizing demolding.

[0044] Preferably, a connecting block 37 is provided at the bottom end of the movable pull rod 23, and a tension spring 38 is provided between the connecting block 37 and the supporting base plate 3. After the drive motor drives the rotating disk 34 to rotate one revolution, the guide ring 36 of the movable pull rod 23 is not subjected to the force of the protrusion 35 of the rotating disk 34. At this time, under the action of the tension spring 38, the movable pull rod 23 retracts, thereby driving the demolding template 15 away from the lower mold core 12, so that the demolding pillar 40 retracts and resets, which can avoid the possibility of collision between the slider structure and the demolding pillar 40.

[0045] Because the cavity wall of the lower mold cavity 13 is curved and its height is not uniform, the height of the demolding pillars 40 at different positions is also not uniform. To address this, the tie plate 21 is equipped with an adjustment mechanism 4 for adjusting the length of the demolding pillars 40. Each demolding pillar 40 includes a first guide pillar 41 inserted into the lower mold cavity 13 and a second guide pillar 42 connected to the demolding template 15. An adjustment pillar 43 is installed between the first guide pillar 41 and the second guide pillar 42. By adjusting the distance between the first guide pillar 41 and the second guide pillar 42 using the adjustment pillar 43, the length of the demolding pillar 40 can be adjusted. The height of each demolding pillar 40 can be adjusted according to the shape of the lower mold cavity 13 to facilitate its fit with the lower mold cavity 13.

[0046] Specifically, the second guide post 42 is formed with a threaded adjustment hole 44 for the insertion of the adjustment post 43, and the adjustment post 43 is formed with an external thread structure 45 that threadedly engages with the threaded adjustment hole 44. By threading the adjustment post 43 with the threaded adjustment hole 44 of the second guide post 42, the depth of the adjustment post 43 in the threaded adjustment hole 44 can be changed, thereby adjusting the overall length of the demolding post 40.

[0047] Preferably, the outer wall of the first guide post 41 is axially formed with a guide groove 46, and the lower mold module 1 is formed with a demolding guide hole 47 for guiding the sliding of the first guide post 41. The wall of the demolding guide hole 47 is formed with a guide protrusion 48 that slides with the guide groove 46. When the adjusting post 43 is rotated, the first guide post 41 will not rotate as a whole, ensuring stability.

[0048] Preferably, the adjusting mechanism 4 further includes an adjusting rod 5. The template 15 has an insertion hole 51 for inserting the adjusting rod 5. A second guide post 42 is rotatably mounted to the insertion post and installed in the insertion hole 51. The inner end of the adjusting rod 5 is connected to the second guide post 42. By connecting the adjusting rod 5, the second guide post 42 can be rotated.

[0049] Preferably, the bottom of the demolding template 15 is connected to a fixing plate 52. The fixing plate 52 is formed with a rotating hole 53 for the adjusting rod 5 to pass through. The adjusting rod 5 rotates in the rotating hole 53, thereby driving the second guide post 42 to rotate in the threaded adjusting hole 44 and engage with the threaded adjusting hole 44. The depth of the adjusting post 43 in the threaded adjusting hole 44 can be changed, thereby adjusting the overall length of the demolding post 40.

[0050] Furthermore, the tie rod plate 21 is formed with an adjustment groove 54, the bottom end of the adjustment rod 5 extends into the adjustment groove 54, and an adjustment block 55 is installed at the inner end of the adjustment rod 5. The adjustment block 55 is formed with a fitting groove 56, and the support base plate 3 is formed with a bottom groove 57 coaxially aligned with the adjustment groove 54. The fitting groove 56 can be a cross groove or an inner pentagonal groove. A cross screwdriver or a pentagonal screwdriver can pass through the bottom groove 57 and connect with the fitting groove 56 of the adjustment block 55, allowing the adjustment rod 5 to rotate. This adjusts the length of the demolding column 40.

[0051] In summary, this utility model possesses the aforementioned excellent characteristics, enabling it to achieve unprecedented efficiency in use and thus become a highly practical product.

[0052] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A mold frame movable tie rod device, comprising a lower mold module assembly, the lower mold module assembly including a lower template, a lower mold core, and a lower mold cavity, wherein a demolding template is installed at the bottom of the lower template, and a demolding column is installed on the lower demolding template, the demolding column being movably inserted into the lower mold cavity, characterized in that: The lower mold module is equipped with a pull rod mechanism that can move it closer to or further away from the lower mold plate. The pull rod mechanism includes a pull rod plate installed below the ejector plate. The pull rod plate has a bottom movable hole, and an outwardly spring-back movable pull rod is installed in the bottom movable hole. The top of the movable pull rod is connected to the ejector plate, and the ejector plate can move between the lower mold plate and the pull rod plate.

2. The movable tie rod device for the mold frame according to claim 1, characterized in that: The top of the movable pull rod is provided with a snap-fit ​​block, and the bottom of the template is formed with a snap-fit ​​groove for the snap-fit ​​block to be inserted.

3. The movable tie rod device for the mold frame according to claim 2, characterized in that: The tie rod mechanism also includes a support base plate installed below the tie rod plate. The tie rod plate is equipped with a rotating disk that can rotate. The edge of the rotating disk is formed with radially arranged protrusions. The outer wall of the movable tie rod is fitted with a guide ring that cooperates with the protrusions.

4. The movable tie rod device for the mold frame according to claim 3, characterized in that: A mounting base is provided between the tie rod plate and the support base plate. A drive seat is mounted on the tie rod plate. A rotating shaft is mounted on the drive seat. A rotating disk is sleeved on the rotating shaft. A drive motor that drives the rotating shaft to rotate is mounted on the drive seat.

5. The movable tie rod device for the mold frame according to claim 4, characterized in that: The bottom end of the movable pull rod is provided with a connecting block, and a tension spring is provided between the connecting block and the supporting base plate.

6. The movable tie rod device for the mold frame according to claim 5, characterized in that: The tie plate is provided with an adjustment mechanism for adjusting the length of the demolding column. The demolding column includes a first guide column inserted into the lower mold cavity and a second guide column connected to the demolding template. An adjustment column is installed between the first guide column and the second guide column.

7. The movable tie rod device for the mold frame according to claim 6, characterized in that: The outer wall of the first guide post is axially formed with a guide groove. The lower mold assembly forms a demolding guide hole for the first guide post to slide. The wall of the demolding guide hole is formed with a guide protrusion that slides with the guide groove. The second guide post is formed with a first threaded adjustment hole for the insertion of an adjustment post. The adjustment post is formed with a first external thread structure that threadedly engages with the threaded adjustment hole.

8. The movable tie rod device for the mold frame according to claim 7, characterized in that: The adjustment mechanism also includes an adjustment rod, and an insertion hole for inserting the adjustment rod is formed by the template. A second guide post is installed in the insertion hole, and the inner end of the adjustment rod is connected to the second guide post.

9. The movable tie rod device for the mold frame according to claim 8, characterized in that: The bottom of the template is connected to a fixing plate, which has a rotating hole for the adjustment rod to pass through.

10. The movable tie rod device for the mold frame according to claim 9, characterized in that: The tie rod plate is formed with an adjustment groove, the bottom end of the adjustment rod extends into the adjustment groove, an adjustment block is installed at the inner end of the adjustment rod, the adjustment block is formed with a fitting groove, and the support base plate is formed with a bottom groove that is coaxially aligned with the adjustment groove.

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