Workpiece encapsulation tooling mold
By introducing positioning and locking components into the tooling mold, the problem of workpiece displacement caused by unstable connection between the upper and lower molds was solved, achieving precise positioning and stable connection of the workpiece within the mold cavity, and improving the effect of overmolding.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGZHOU QINGYUAN MASCH TECH CO LTD
- Filing Date
- 2023-11-25
- Publication Date
- 2026-06-02
AI Technical Summary
When the connection between the upper and lower molds of the existing tooling is unstable, the workpiece will be displaced within the mold, affecting the coating process.
The system employs positioning and locking components, including a first positioning post, a second positioning post, an abutment ring, a moving rod, and an abutment blade. Through the abutment between the first positioning post and the abutment ring and the driving of the moving rod, the connection stability of the upper and lower dies is improved, and the displacement of the workpiece within the mold cavity is reduced.
It improves the connection stability of the upper and lower molds, ensures the accuracy of the workpiece's position within the mold cavity, and enhances the effect and quality of the overmolding process.
Smart Images
Figure CN117359864B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of overmolding technology, and in particular to a tooling mold for overmolding workpieces. Background Technology
[0002] Overmolding technology can seal parts, making them more stable in harsh environments such as humidity and dust, and increasing product lifespan.
[0003] In related technologies, the tooling mold includes an upper mold and a lower mold. The rubber block is placed in the lower mold, and the workpiece is placed in the lower mold. After placement, a rubber block is placed on the upper surface of the workpiece, and then the upper mold and lower mold are closed. After the mold is closed, the tooling mold, along with the workpiece, is placed in a vulcanizing machine for vulcanization and rubber coating.
[0004] However, during the operation, the connection between the upper and lower molds is unstable, which makes the workpiece located between them more prone to displacement, thus affecting the coating process. Summary of the Invention
[0005] To address the problem of unstable connection between the upper and lower molds, which makes the workpiece located between them prone to displacement and thus affects the coating process, this application provides a workpiece coating tooling mold.
[0006] The workpiece coating tooling mold provided in this application adopts the following technical solution:
[0007] A workpiece overmolding tooling mold includes an upper mold and a lower mold, with a mold cavity formed between the upper and lower molds for placing the workpiece. It also includes a positioning assembly and a locking assembly. The positioning assembly includes a first positioning post and a second positioning post. The first positioning post passes through the upper mold, and the second positioning post passes through the lower mold. A positioning cavity is formed within the second positioning post, and the first positioning post extends into the positioning cavity. The locking assembly includes an abutment ring, a moving rod, and an abutment blade. The abutment ring is disposed on the inner wall of the positioning cavity, and the first positioning post abuts against the abutment ring. The moving rod is movably disposed within the first positioning post, and the abutment blade is rotatably connected to one end of the moving rod. The rotation axis of the abutment blade is perpendicular to the axis of the moving rod, and the abutment blade rotates away from the moving rod, abutting against the abutment ring.
[0008] By adopting the above technical solution, the second positioning post is inserted into the lower mold. The operator places the rubber block and the workpiece into the lower mold, and then places the upper mold accordingly to align the upper mold with the lower mold. The first positioning post is inserted through the upper mold and into the positioning cavity. The first positioning post abuts against the abutting ring, driving the moving rod. The moving rod drives the abutting blade to move towards the positioning cavity. Then the abutting blade rotates away from the moving rod and tends to unfold, so that the abutting blade abuts against the abutting ring. This helps to improve the stability of the relative position between the first positioning post and the second positioning post after they are connected, thereby improving the connection stability after the upper mold and the lower mold are closed, reducing the possibility of the workpiece displacement in the mold cavity, and ensuring the effect of rubber coating.
[0009] Preferably, the first positioning post has a movable cavity along its own axial direction, the moving rod is located in the movable cavity, the outer wall of the moving rod is provided with a limiting block, the inner wall of the movable cavity is provided with a clearance groove, a rotating slide groove and a limiting groove, the clearance groove and the limiting groove are both connected to the rotating slide groove, the rotating slide groove is opened along the inner wall of the movable cavity, when the limiting block is located in the clearance groove, the abutting blade is housed in the movable cavity; after the limiting block rotates along the rotating slide groove, it extends into the limiting groove, and the abutting blade enters the positioning cavity.
[0010] By adopting the above technical solution, during connection, the first positioning post is inserted into the positioning cavity, driving the limiting block to move along the relief groove and enter the rotating slide groove, so that the abutting blade enters the positioning cavity, which facilitates the subsequent rotation of the abutting blade relative to the moving rod; then the moving rod is rotated, so that the limiting block rotates along the rotating slide groove and enters the limiting groove, and the groove wall of the limiting groove limits the limiting block, thereby limiting the moving rod.
[0011] Preferably, the rotating groove is provided with a relief spring, and the end of the relief spring away from the groove wall of the rotating groove abuts against the limiting block.
[0012] By adopting the above technical solution, after the limiting block extends into the limiting groove, under the support of the relief spring, the moving rod and the limiting block tend to reset synchronously, which is conducive to the abutting blade abutting against the abutting ring, while the groove wall of the limiting groove blocks the reset of the limiting block.
[0013] Preferably, the outer wall of the moving rod is provided with an abutting arc plate, the limiting block is fixedly connected to the abutting arc plate, and multiple relief springs are provided, with the abutting arc plate abutting against the end of the relief spring away from the rotating slide groove wall.
[0014] By adopting the above technical solution, while the moving rod carries the limiting block to rotate along the rotating slide, the abutting arc plate rotates synchronously, and the limiting block is always in contact with the relief spring, which facilitates operation.
[0015] Preferably, the locking assembly further includes an operating block and a connecting rope. The operating block is movably connected to the end of the moving rod away from the abutting blade, and one end of the connecting rope is fixedly connected to the operating block, while the other end is fixedly connected to the abutting blade.
[0016] By adopting the above technical solution, in the initial state, the operating block moves away from the moving rod, and the operating block pulls the connecting rope, so that the abutting blade is kept in a state of adhering to the outer wall of the moving rod, which facilitates the connection between the first positioning post and the second positioning post, and also facilitates the subsequent disconnection operation.
[0017] Preferably, the locking assembly further includes a rotary torsion spring, which is disposed on the rotating shaft that abuts the blade and the moving rod.
[0018] By adopting the above technical solution, the moving rod drives the abutting blade to move towards the positioning cavity. Under the action of the rotational torsion spring, the abutting blade rotates towards the side away from the outer wall of the moving rod. Then, under the support of the relief spring, the abutting blade abuts against the abutting ring, and the abutting ring and the abutting blade are limited, thereby limiting the moving rod. After the vulcanization and rubber coating process is completed, the moving rod is driven to move towards the second positioning post. The abutting arc plate presses the relief spring, and then the operating block is pulled, so that the abutting blade rotates to a state of being in contact with the outer wall of the moving rod. Then the moving rod is rotated, and under the support of the relief spring, the moving rod carries the abutting blade back to the movable cavity.
[0019] Preferably, the lower mold has a through hole for the second positioning post to pass through, and the tooling mold also includes a sealing component, the sealing component including an elastic sealing ring, the elastic sealing ring being fixedly connected to the end of the second positioning post near the first positioning post, the inner wall of the elastic sealing ring abutting against the outer wall of the first positioning post, and the outer wall of the elastic sealing ring abutting against the wall of the through hole.
[0020] By adopting the above technical solution, when the first positioning post is connected to the second positioning post, the first positioning post extends into the elastic sealing ring. During the extension process, the first positioning post abuts against the inner wall of the spring sealing ring. Under the support of the first positioning post, the outer wall of the elastic sealing ring further abuts against the wall of the through hole, which helps to reduce the leakage of rubber blocks during the vulcanization process.
[0021] Preferably, the sealing assembly further includes a plurality of return springs, which are arranged radially inside the elastic sealing ring.
[0022] By adopting the above technical solution, after the vulcanization and overmolding process is completed, the drive moving rod moves toward the second positioning post, pulls the operating block, and causes the abutment blade to rotate to a state of contact with the outer wall of the moving rod, so that the moving rod is reset and moved into the movable cavity, the first positioning post moves away from the positioning cavity, and the elastic sealing ring is reset under the elastic force of the reset spring, which facilitates the separation between the second positioning post and the lower mold.
[0023] Preferably, the lower mold has an overflow groove.
[0024] By adopting the above technical solution, the rubber compound melts during the vulcanization process. The melted rubber compound coats the surface of the workpiece, and the excess rubber compound overflows along the overflow groove, which facilitates the cleaning of the excess rubber compound after the coating cools down.
[0025] Preferably, the upper mold has a mold release hole.
[0026] By adopting the above technical solution, after the vulcanization and overmolding are completed, the upper mold and lower mold can be separated through the mold release hole, which facilitates the cleaning of residual rubber material in the mold cavity for the next use.
[0027] In summary, this application includes at least one of the following beneficial technical effects:
[0028] 1. By setting the first and second positioning pins, the workpiece is positioned more accurately within the mold cavity after the upper and lower molds are closed;
[0029] 2. By using abutment rings, moving rods, and abutment blades, after the first positioning post and the second positioning post are connected, the first positioning post abuts against the abutment ring, and the abutment blades abut against the side of the abutment ring away from the first positioning post, thus achieving bidirectional limiting. This helps to improve the connection stability between the first positioning post and the second positioning post, thereby improving the connection stability between the upper mold and the lower mold. Attached Figure Description
[0030] Figure 1 This is a schematic diagram illustrating the separated state of the workpiece coating tooling mold in the embodiments of this application.
[0031] Figure 2 This is a structural diagram illustrating the unconnected state of the locking component in an embodiment of this application.
[0032] Figure 3 This is a structural diagram illustrating the connection and locking of the locking assembly in the embodiments of this application.
[0033] Explanation of reference numerals in the attached drawings: 1. Upper mold; 11. Demolding hole; 2. Lower mold; 21. Overflow groove; 22. Through hole; 23. Mold cavity; 3. Positioning assembly; 31. First positioning post; 311. Movable cavity; 312. Relief groove; 313. Rotating slide; 314. Limiting groove; 315. Relief spring; 32. Second positioning post; 321. Positioning cavity; 4. Locking assembly; 41. Abutment ring; 42. Moving rod; 421. Abutment arc plate; 422. Limiting block; 43. Abutment blade; 431. Rotating torsion spring; 44. Operating block; 441. Pull handle; 45. Connecting rope; 5. Sealing assembly; 51. Elastic sealing ring; 52. Return spring; 6. Workpiece. Detailed Implementation
[0034] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0035] This application discloses a workpiece coating tooling mold, such as... Figure 1 and 2 As shown, the tooling includes an upper mold 1 and a lower mold 2, with a cavity 23 formed between the upper mold 1 and the lower mold 2 for placing the workpiece 6. It also includes a positioning component 3 and a locking component 4. The positioning component 3 is used to position the upper mold 1 and the workpiece 6, and the lower mold 2 and the workpiece 6, thereby ensuring the accuracy of the workpiece 6's position within the cavity 23. After the upper mold 1 and the lower mold 2 are closed, the locking component 4 further locks them together, improving the stability of the relative position between the entire tooling and the workpiece 6.
[0036] like Figure 1 As shown, the lower mold 2 has an overflow groove 21. During the vulcanization process, the rubber melts and coats the surface of the workpiece 6. Excess rubber overflows along the overflow groove 21, facilitating cleaning after cooling. The upper mold 1 has a release hole 11. After vulcanization, the upper mold 1 can be separated from the lower mold 2 through the release hole 11, facilitating cleaning of any remaining rubber in the mold cavity 23 for future use. The release hole 11 can also be formed by closing the upper mold 1 and lower mold 2, depending on the specific application requirements.
[0037] like Figure 1 and 2 As shown, the positioning component 3 includes a first positioning post 31 and a second positioning post 32. The first positioning post 31 is inserted through the upper mold 1 and extends into the mold cavity 23. The lower mold 2 has a through hole 22 for the second positioning post 32 to pass through. The second positioning post 32 is inserted through the lower mold 2 and extends into the mold cavity 23. A positioning cavity 321 is formed inside the second positioning post 32, and one end of the first positioning post 31 extends into the positioning cavity 321.
[0038] like Figure 2As shown, it also includes a sealing assembly 5, which includes an elastic sealing ring 51 and several return springs 52. The elastic sealing ring 51 is fixedly connected to the end of the second positioning post 32 near the first positioning post 31. The return springs 52 are arranged radially inside the elastic sealing ring 51. When the first positioning post 31 is connected to the second positioning post 32, the first positioning post 31 extends into the elastic sealing ring 51. During the extension process, the first positioning post 31 abuts against the inner wall of the spring sealing ring. Under the support of the first positioning post 31, the outer wall of the elastic sealing ring 51 further abuts against the wall of the through hole 22, which helps to reduce the leakage of the rubber block during the vulcanization process. After the vulcanization and overmolding process is completed, the first positioning post 31 moves away from the positioning cavity 321, and the elastic sealing ring 51 is reset under the elastic force of the return springs 52, which facilitates the separation of the second positioning post 32 from the lower mold 2.
[0039] like Figure 2 and 3 As shown, the locking assembly 4 includes an abutment ring 41, which is fixedly connected to the inner wall of the positioning cavity 321. The first positioning post 31 has a movable cavity 311 along its axial direction. A moving rod 42 is axially connected within the movable cavity 311, and one end of the moving rod 42 is rotatably connected to an abutment blade 43. Four abutment blades 43 are provided. A torsion spring 431 is provided on the rotation axis of each abutment blade 43 and the moving rod 42. When the first positioning post 31 is connected to the second positioning post 32, the first positioning post 31 extends into the positioning cavity 321 and abuts against the abutment ring 41.
[0040] like Figure 2 and 3 As shown, the first positioning post 31 is also provided with a clearance groove 312, a rotating slide groove 313, and a limiting groove 314. The clearance groove 312 and the limiting groove 314 are both connected to the rotating slide groove 313, which is located along the inner wall of the movable cavity 311. An abutment arc plate 421 is fixedly connected to the outer wall of the moving rod 42. Multiple clearance springs 315 are fixedly connected inside the rotating slide groove 313. The abutment arc plate 421 abuts against the end of the clearance spring 315 away from the groove wall of the rotating slide groove 313. A limiting block 422 is fixedly connected to the side of the abutment arc plate 421 away from the clearance spring 315. The clearance groove 312 and the limiting groove 314 are both for the insertion of the limiting block 422.
[0041] Along the axial direction of the first positioning post 31, the limiting groove 314 is located below the relief groove 312. When the limiting block 422 is located in the relief groove 312, the abutment blade 43 is attached to the outer wall of the moving rod 42 and stored in the movable cavity 311. When the operator presses the moving rod 42, the moving rod 42 drives the limiting block 422 to move down, and then rotates along the rotating slide 313 and extends into the limiting groove 314. Under the action of the rotating torsion spring 431, the abutment blade 43 rotates relative to the moving rod 42 and tends to unfold, and then enters the positioning cavity 321. Under the support of the relief spring 315, the abutment arc plate 421 has an upward tendency. The four sections of the arc plate drive the moving rod 42 to move upward synchronously, so that the unfolded abutment blade 43 abuts against the abutment ring 41 on the side away from the first positioning post 31. Simultaneously, the abutting arc plate 421 drives the limiting block 422 to abut against the groove wall of the limiting groove 314. The groove wall of the limiting groove 314 limits the limiting block 422, thereby limiting the displacement of the abutting arc plate 421 and the moving rod 42.
[0042] like Figure 2 and 3 As shown, the locking assembly 4 also includes an operating block 44 and connecting ropes 45. The operating block 44 is movably connected to the end of the moving rod 42 away from the abutting blade 43. A pull handle 441 is fixedly connected to the operating block 44, which facilitates the operator to pull the operating block 44. There are four connecting ropes 45, one end of which is fixedly connected to the operating block 44, and the other end is fixedly connected to the abutting blade 43. When disengaging, the operator presses the moving rod 42, driving the moving rod 42, the abutting arc plate 421, and the limiting block 422 to simultaneously press against the relief spring 315, causing the moving rod 42 to descend further relative to the first positioning post 31. Then, the operator pulls the operating block 44, which drives the connecting ropes 45 to pull the abutting blade 43 back to its original position, causing the abutting blade 43 to rotate to a position that fits against the outer wall of the moving rod 42. Then, the moving rod 42 is rotated in the opposite direction, causing the limiting block 422 to move along the rotating slide 313 into the relief groove 312. The limiting block 422 drives the moving rod 42 to move upward relative to the first positioning post 31, thereby driving the abutting blade 43 to be stored in the movable cavity 311.
[0043] The implementation principle of a workpiece coating tooling mold in this application embodiment is as follows:
[0044] Before vulcanization and overmolding, the workpiece 6 is placed in the lower mold 2, and then the upper mold 1 is placed in the same position. The upper mold 1 and the lower mold 2 are then closed. The second positioning pin 32 is inserted into the through hole 22 and into the mold cavity 23. The first positioning pin 31 is then inserted into the upper mold 1 and then into the second positioning pin 32. The first positioning pin 31 abuts against the abutting ring 41. The moving rod 42 is pressed and rotated, driving the abutting blade 43 to rotate and unfold. The abutting blade 43 then abuts against the side of the abutting ring 41 away from the first positioning pin 31. This improves the connection stability after the upper mold 1 and the lower mold 2 are closed, thereby improving the positional stability of the workpiece 6 in the mold cavity 23 and improving the quality of the vulcanization and overmolding process.
[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A workpiece overmolding tooling mold, comprising an upper mold (1) and a lower mold (2), wherein a mold cavity (23) for placing a workpiece (6) is formed between the upper mold (1) and the lower mold (2), characterized in that: It also includes a positioning component (3) and a locking component (4). The positioning component (3) includes a first positioning post (31) and a second positioning post (32). The first positioning post (31) passes through the upper mold (1), and the second positioning post (32) passes through the lower mold (2). A positioning cavity (321) is formed in the second positioning post (32), and the first positioning post (31) extends into the positioning cavity (321). The locking component (4) includes an abutment ring (41), a moving rod (42), and an abutment blade (43). The abutting ring (41) is disposed on the inner wall of the positioning cavity (321), the first positioning post (31) abuts against the abutting ring (41), the moving rod (42) is movably disposed in the first positioning post (31), the abutting blade (43) is rotatably connected to one end of the moving rod (42), the rotation axis of the abutting blade (43) is perpendicular to the axis of the moving rod (42), the abutting blade (43) rotates away from the moving rod (42), and the abutting blade (43) abuts against the abutting ring (41); The first positioning post (31) has a movable cavity (311) along its own axial direction. The moving rod (42) is located in the movable cavity (311). The outer wall of the moving rod (42) is provided with a limiting block (422). The inner wall of the movable cavity (311) is provided with a clearance groove (312), a rotating slide groove (313), and a limiting groove (314). The clearance groove (312) and the limiting groove (314) are both connected to the rotating slide groove (313). The rotating slide groove (313) is opened along the inner wall of the movable cavity (311). When the limiting block (422) is located in the clearance groove (312), the abutting blade (43) is housed in the movable cavity (311). After the limiting block (422) rotates along the rotating slide groove (313), it extends into the limiting groove (314), and the abutting blade (43) enters the positioning cavity (321). The rotating slide (313) is provided with a relief spring (315), and the end of the relief spring (315) away from the groove wall of the rotating slide (313) abuts against the limiting block (422); The outer wall of the moving rod (42) is provided with an abutting arc plate (421), the limiting block (422) is fixedly connected to the abutting arc plate (421), and multiple relief springs (315) are provided. The abutting arc plate (421) abuts against the end of the relief spring (315) away from the groove wall of the rotating slide (313).
2. The workpiece coating tooling mold according to claim 1, characterized in that: The locking assembly (4) also includes an operating block (44) and a connecting rope (45). The operating block (44) is movably connected to one end of the moving rod (42) away from the abutting blade (43). One end of the connecting rope (45) is fixedly connected to the operating block (44), and the other end is fixedly connected to the abutting blade (43).
3. The workpiece coating tooling mold according to claim 2, characterized in that: The locking assembly (4) further includes a rotating torsion spring (431), which is located on the rotating shaft of the contact blade (43) and the moving rod (42).
4. The workpiece coating tooling mold according to claim 1, characterized in that: The lower mold (2) has a through hole (22) for the second positioning post (32) to pass through. The tooling mold also includes a sealing component (5). The sealing component (5) includes an elastic sealing ring (51). The elastic sealing ring (51) is fixedly connected to one end of the second positioning post (32) near the first positioning post (31). The inner wall of the elastic sealing ring (51) abuts against the outer wall of the first positioning post (31). The outer wall of the elastic sealing ring (51) abuts against the wall of the through hole (22).
5. The workpiece coating tooling mold according to claim 4, characterized in that: The sealing assembly (5) also includes a plurality of return springs (52), which are arranged radially inside the elastic sealing ring (51).
6. The workpiece coating tooling mold according to claim 1, characterized in that: An overflow groove (21) is provided on the lower mold (2).
7. The workpiece coating tooling mold according to claim 1, characterized in that: The upper mold (1) is provided with a mold release hole (11).