A swing anti-rebound mechanism for a three-plate mold

Abstract

The utility model relates to a kind of swing anti-rebound mechanism for three-plate mould, with mould assembly;Mould assembly includes bottom plate, stripper plate and moving plate, bottom plate, stripper plate and moving plate are arranged along the axial direction arrangement;Striker plate and moving plate can be slidably arranged along the axial direction, striker plate and moving plate form mould closing or mould opening after sliding along the axial direction with bottom plate;It is also provided with limiting assembly, limiting assembly includes first limiting rod, support block and second limiting rod, one end of first limiting rod is rotationally arranged on moving plate, one end of second limiting rod is fixedly arranged on bottom plate, and second limiting rod is below first limiting rod;First limiting rod end is always driven with the middle part of first limiting rod to form pressure simultaneously with support block and second limiting rod under the action of gravity;The utility model ensures that stripper plate will not cause mould and manipulator damage due to springback phenomenon caused by stress release after mould opening, ensure the stability and safety of production.

Description

Technical Field

[0001] This utility model relates to a swing anti-rebound mechanism for a three-plate mold. Background Technology

[0002] Three-plate molds are a common mold structure in injection molding, achieving automatic separation of the runner material from the product through the movement of the ejector plate. During mold opening, the mold typically separates first from the moving plate and the ejector plate, followed by the separation of the ejector plate and the fixed plate.

[0003] However, when the mold is opened, the energy stored in the elastic elements such as springs that drive the demolding movement is released instantaneously. This can easily cause the demolding to spring back or vibrate. After the front mold is opened, it is easy to cause springback due to stress release. If the amount of springback is too large, it will cause the robot to collide with the mold, causing damage to the mold and the robot, affecting production safety and efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a swing anti-springback mechanism for three-plate molds, ensuring that the mold and robot will not be damaged due to springback caused by stress release after mold opening, thus ensuring stable and safe production.

[0005] The technical solution to achieve the purpose of this utility model is as follows: This utility model has a mold assembly; the mold assembly includes a base plate, a stripping plate, and a movable plate, the base plate, the stripping plate, and the movable plate are arranged along the axial direction; the stripping plate and the movable plate are slidable along the axial direction, and after sliding along the axial direction, the stripping plate and the movable plate form a mold closing or mold opening with the base plate; a limiting component for preventing the stripping plate from springing back is also provided, the limiting component includes a first limiting rod, a support block, and a second limiting rod, one end of the first limiting rod is rotatably mounted on the movable plate, and the other end of the first limiting rod extends toward the base plate, the support block is fixedly mounted on the stripping plate and located below the first limiting rod, one end of the second limiting rod is fixedly mounted on the base plate, and the other end of the second limiting rod extends toward the movable plate, the second limiting rod is located below the first limiting rod; a clearance space is formed between the second limiting rod and the stripping plate for the support block to enter, and the end of the first limiting rod extending toward the base plate always drives the middle part of the first limiting rod to simultaneously press against the support block and the second limiting rod under the action of gravity; When the ejector plate and the moving plate slide along the axial direction and form an open mold with the base plate, the end of the first limiting rod extending toward the base plate rotates toward the support block under the action of gravity and forms a limiting fit with the support block. The ejector plate forms a sliding restriction through the limiting fit between the first limiting rod and the support block. When the demolding template and the moving plate slide along the axial direction and form a mold with the base plate, the end of the first limiting rod extending toward the base plate engages with the end of the first limiting rod extending toward the base plate as the moving plate slides. The end of the first limiting rod extending toward the base plate disengages from the support plate through this engagement, and the middle part of the first limiting rod presses against the support plate. The support block is located in the clearance space, and the demolding template disengages from the support plate through the end of the first limiting rod extending toward the base plate, thus allowing it to slide freely.

[0006] Furthermore, a contact block is provided on the end of the first limiting rod extending toward the base plate, and a slot is provided on the side of the support block facing the moving plate for the contact part to enter and form a limiting fit. The slot is connected to the outside on the side facing the first limiting rod. The template is slidingly limited by the limiting fit between the slot and the contact block.

[0007] Furthermore, the first limiting rod has a first guide slope on the end extending toward the base plate, and the second limiting rod has a second guide slope on the end extending toward the moving plate, which can form a guiding sliding fit with the first guide slope. The end extending toward the base plate of the first limiting rod is disengaged from the limiting fit of the support block through the guiding sliding fit of the first guide slope and the second guide slope, as well as the rotational connection between the first limiting rod and the moving plate.

[0008] Furthermore, the slope of the second guiding slope is less than that of the first guiding slope.

[0009] Furthermore, the moving plate is provided with multiple guide rods, and the demolding plate is provided with multiple sliding holes that correspond one-to-one with each guide rod and can form a sliding fit with each guide rod. It is also provided with a limiting component to prevent the sliding hole from disengaging from the sliding fit with the guide rod. The demolding plate is slidably set on the moving plate along the axial direction through the sliding fit between the guide hole and the guide rod and the limiting effect of the limiting component.

[0010] Furthermore, the limiting component includes a limiting plate with one end fixedly mounted on the moving plate and the other end extending toward the stripping template, and a limiting block fixedly mounted on the stripping template. The limiting plate is provided with a long straight groove through which the limiting block can slide. The limiting plate can form a limiting engagement with both ends of the long straight groove. The stripping template forms a sliding limit on the moving plate through the limiting engagement between the limiting block and both ends of the long straight groove.

[0011] The present invention has positive effects: (1) When the mold is opened, the limiting component of the present invention uses the limiting rod and the support block to limit the movement of the demolding template after the first mold opening; ensures that the demolding template will not rebound due to stress release after the mold is opened. If the rebound is too large, it will cause the robot to collide with the mold, causing damage to the mold and the robot, thus ensuring the stability and safety of production.

[0012] (2) The first limiting rod of this utility model has a contact block on one end extending toward the base plate, and the support block has a slot on the side facing the moving plate for the contact part to enter and form a limiting fit. The slot is connected to the outside on the side facing the first limiting rod. The template is slidingly limited by the limiting fit between the slot and the contact block. Due to the setting of the contact block, the limiting fit between the first limiting rod and the support block can be made more stable.

[0013] (3) By setting a first guide slope and a second guide slope, and using their guiding effect during mold closing, the first limiting rod is smoothly disengaged from the support block, ensuring the smooth operation of the mold closing action and preventing interference or jamming of the mechanism.

[0014] (4) The slope of the second guide slope of this utility model is smaller than that of the first guide slope, which allows the first limiting rod to be driven to rotate with a smaller force in the early stage of mold closing, making the operation smoother and less strenuous. Attached Figure Description

[0015] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein... Figure 1 This is a schematic diagram of the installation of the limiting component of this utility model; Figure 2 This is a front view of the limiting component of this utility model; Figure 3 This is a rear view of the limiting component of this utility model; Figure 4 This is a structural schematic diagram of the mold assembly of this utility model in the mold-opening state.

[0016] In the figure, mold components: 1, base plate: 11, ejector plate: 12, moving plate: 13, limiting components: 2, first limiting rod: 21, contact block: 211, first guide slope: 212, support block: 22, slot: 221, second limiting rod: 23, second guide slope: 231, guide rod: 4, limiting components: 5, limiting plate: 51, limiting block: 52. Detailed Implementation

[0017] See Figures 1 to 4This utility model includes a mold assembly 1; the mold assembly 1 includes a base plate 11, a stripping template 12, and a movable plate 13, which are arranged along an axial direction; the stripping template 12 and the movable plate 13 are slidable along the axial direction, and after sliding along the axial direction, the stripping template 12 and the movable plate 13 form a mold closing or opening with the base plate 11; it also includes a limiting component 2 to prevent the stripping template 12 from springing back, the limiting component 2 including a first limiting rod 21, a support block 22, and a second limiting rod 23, one end of the first limiting rod 21 being rotatably mounted on the movable plate 13, the first limiting rod 23 being... The other end of the first limiting rod 23 extends toward the base plate 11. The support block 22 is fixedly mounted on the demolding template 12 and located below the first limiting rod 21. One end of the second limiting rod 23 is fixedly mounted on the base plate 11, and the other end of the second limiting rod 23 extends toward the moving plate 13. The second limiting rod 23 is located below the first limiting rod 21. A clearance space is formed between the second limiting rod 23 and the demolding template 12, allowing the support block 22 to enter. Under the action of gravity, the end of the first limiting rod 21 extending toward the base plate 11 always drives the middle part of the first limiting rod 21 to simultaneously press against the support block 22 and the second limiting rod 23. When the ejector plate 12 and the moving plate 13 slide along the axial direction and form an open mold with the base plate 11, the end of the first limiting rod 21 extending toward the base plate 11 rotates toward the support block 22 under the action of gravity and forms a limiting fit with the support block 22. The ejector plate 12 forms a sliding limit through the limiting fit between the first limiting rod 21 and the support block 22. When the demolding template 12 and the moving plate 13 slide along the axial direction and form a mold closing with the base plate 11, the end of the first limiting rod 21 extending toward the base plate 11 cooperates with the end of the first limiting rod 21 extending toward the base plate 11 as the moving plate 13 slides. The end of the first limiting rod 21 extending toward the base plate 11 is disengaged from the support plate through the cooperation. The middle part of the first limiting rod 21 presses against the support plate. The support block 22 is located in the clearance space. The demolding template 12 is disengaged from the support plate through the end of the first limiting rod 21 extending toward the base plate 11, thus forming free sliding.

[0018] The first limiting rod 21 has a contact block 211 on one end extending toward the base plate 11, and the support block 22 has a slot 221 on the side facing the moving plate 13, which allows the contact part to enter and form a limiting fit. The slot 221 is connected to the outside on the side facing the first limiting rod 21. The stripping template 12 forms a sliding limit through the limiting fit between the slot 221 and the contact block 211.

[0019] The first limiting rod 21 has a first guide slope 212 at one end extending toward the base plate 11, and the second limiting rod 23 has a second guide slope 231 at one end extending toward the moving plate 13, which can form a guide sliding fit with the first guide slope 212. The end of the first limiting rod 21 extending toward the base plate 11 is disengaged from the limiting fit of the support block 22 through the guide sliding fit of the first guide slope 212 and the second guide slope 231 and the rotational connection between the first limiting rod 21 and the moving plate 13.

[0020] The slope of the second guide slope 231 is less than the slope of the first guide slope 212.

[0021] The moving plate 13 is provided with multiple guide rods 4, and the demolding plate 12 is provided with multiple sliding holes that correspond one-to-one with each guide rod 4 and can form a sliding fit with each guide rod 4. It is also provided with a limiting component 515 to prevent the sliding holes from disengaging from the sliding fit with the guide rods 4. The demolding plate 12 is slidably disposed on the moving plate 13 along the axial direction through the sliding fit between the guide holes and the guide rods 4 and the limiting effect of the limiting component 515.

[0022] The limiting component 515 includes a limiting plate with one end fixedly mounted on the moving plate 13 and the other end extending toward the ejector plate 12, and a limiting block 52 fixedly mounted on the ejector plate 12. The limiting plate is provided with a long straight groove through which the limiting block can slide. The limiting plate can form a limiting engagement with both ends of the long straight groove. The ejector plate 12 forms a sliding limit on the moving plate 13 through the limiting engagement of the limiting block 52 with both ends of the long straight groove.

[0023] The working principle of this utility model is as follows: When the ejector plate 12, the moving plate 13, and the base plate 11 slide to form the mold opening, a sliding relationship is formed between the ejector plate 12 and the moving plate 13. During the sliding process of the ejector plate 12, the support block 22 located on the ejector plate 12 moves to the end of the first limiting rod 21 extending toward the base plate 11. The end of the first limiting rod 21 extending toward the base plate 11 rotates toward the support block 22 under the action of gravity. The contact block 211 on the end of the first limiting rod 21 extending toward the base plate 11 enters the slot 221 on the support block 22. The ejector plate 12 is restricted by the limiting cooperation between the contact block 211 and the slot 221, thereby preventing the ejector plate 12 from rebounding due to stress release. If the rebound is too large, it will cause the robot to collide with the mold, causing damage to the mold and the robot, affecting production safety and efficiency. When the mold release plate 12, the moving plate 13, and the base plate 11 slide to form a closed mold, the moving plate 13 and the mold release plate 12 move towards the base plate 11 simultaneously. During the movement, the first guide slope 212 on the first limiting rod 21 and the second guide slope 231 on the second limiting rod 23 form a guiding sliding fit. When the guiding sliding fit is formed, the first limiting rod 21 rotates against gravity under the combined action of guidance and rotation setting. At this time, the contact block 211 on the first limiting rod 21 disengages from the slot 221, and the mold release plate 12 and the moving plate 13 slide freely. At the same time, the first limiting rod 21 presses against the second limiting rod 23 and the support block 22, and the support block 22 enters the clearance space.

[0024] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rocking anti-rebound mechanism for a three-plate mold, comprising a mold assembly (1); characterized in that: The mold assembly (1) includes a base plate (11), a stripping plate (12), and a movable plate (13). The base plate (11), stripping plate (12), and movable plate (13) are arranged along the axial direction. The stripping plate (12) and movable plate (13) can slide along the axial direction. After sliding along the axial direction, the stripping plate (12) and movable plate (13) form a mold closing or mold opening with the base plate (11). A limiting component (2) is also provided to prevent the stripping plate (12) from springing back. The limiting component (2) includes a first limiting rod (21), a support block (22), and a second limiting rod (23). One end of the first limiting rod (21) is rotatably mounted on the movable plate (13). The other end extends toward the base plate (11). The support block (22) is fixedly set on the demolding template (12) and located below the first limiting rod (21). One end of the second limiting rod (23) is fixedly set on the base plate (11), and the other end of the second limiting rod (23) extends toward the moving plate (13). The second limiting rod (23) is located below the first limiting rod (21). A clearance space is formed between the second limiting rod (23) and the demolding template (12) for the support block (22) to enter. Under the action of gravity, the end of the first limiting rod (21) extending toward the base plate (11) always drives the middle part of the first limiting rod (21) to simultaneously press against the support block (22) and the second limiting rod (23). When the demolding template (12) and the moving plate (13) slide along the axial direction and form an open mold with the base plate (11), the end of the first limiting rod (21) extending toward the base plate (11) rotates toward the support block (22) under the action of gravity and forms a limiting fit with the support block (22). The demolding template (12) forms a sliding limit through the limiting fit between the first limiting rod (21) and the support block (22). When the demolding template (12) and the moving plate (13) slide along the axial direction and form a mold with the base plate (11), the end of the first limiting rod (21) extending toward the base plate (11) cooperates with the end of the first limiting rod (21) extending toward the base plate (11) as the moving plate (13) slides. The end of the first limiting rod (21) extending toward the base plate (11) is separated from the contact with the support plate through the cooperation. The middle part of the first limiting rod (21) is pressed against the support plate. The support block (22) is located in the clearance space. The demolding template (12) is separated from the contact with the support plate through the end of the first limiting rod (21) extending toward the base plate (11) to form free sliding.

2. The swing anti-rebound mechanism for a three-plate mold according to claim 1, characterized in that: The first limiting rod (21) has a contact block (211) on one end extending toward the base plate (11), and the support block (22) has a slot (221) on the side facing the moving plate (13) for the contact part to enter and form a limiting fit. The slot (221) is connected to the outside on the side facing the first limiting rod (21), and the release plate (12) forms a sliding limit through the limiting fit between the slot (221) and the contact block (211).

3. The swing anti-rebound mechanism for a three-plate mold according to claim 1, characterized in that: The first limiting rod (21) has a first guide slope (212) at one end extending toward the base plate (11), and the second limiting rod (23) has a second guide slope (231) at one end extending toward the moving plate (13) that can form a guide sliding fit with the first guide slope (212). The end of the first limiting rod (21) extending toward the base plate (11) is disengaged from the limiting fit of the support block (22) through the guide sliding fit of the first guide slope (212) and the second guide slope (231) and the rotational connection between the first limiting rod (21) and the moving plate (13).

4. The swing anti-rebound mechanism for a three-plate mold according to claim 3, characterized in that: The slope of the second guide slope (231) is less than the slope of the first guide slope (212).

5. The swing anti-rebound mechanism for a three-plate mold according to claim 1, characterized in that: The moving plate (13) is provided with multiple guide rods (4), and the demolding plate (12) is provided with multiple sliding holes that correspond one-to-one with each guide rod (4) and can form a sliding fit with each guide rod (4). It is also provided with limiting components (51) (5) to prevent the sliding holes from disengaging from the sliding fit with the guide rods (4). The demolding plate (12) is slidably disposed on the moving plate (13) along the axial direction through the sliding fit between the guide holes and the guide rods (4) and the limiting effect of the limiting components (51) (5).

6. The swing anti-rebound mechanism for a three-plate mold according to claim 5, characterized in that: The limiting component (51) (5) includes a limiting plate with one end fixedly mounted on the moving plate (13) and the other end extending toward the stripping template (12) and a limiting block (52) fixedly mounted on the stripping template (12). The limiting plate is provided with a long straight groove through which the limiting block can slide. The limiting plate can form a limiting fit with both ends of the long straight groove. The stripping template (12) forms a sliding limit on the moving plate (13) through the limiting fit between the limiting block (52) and both ends of the long straight groove.

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