Mold structure capable of preventing insert from being strained

Abstract

The utility model relates to the technical field of dies, and discloses a die structure for preventing an insert from being strained, which comprises a lower die and an upper die. According to the utility model, through the flexible in-out design of the roller in the inner groove of the insert, the direct friction between the insert and other parts during the opening and closing of the traditional mold is converted into the rolling contact of the roller, so that the friction loss is greatly reduced, and the problems of strain, abrasion and the like caused by the friction of the insert are avoided; the synchronous plate, the insertion plate and the roller are linked to realize ejection and reset actions, the structure is compact, the energy consumption is low, the service life of the insert is obviously prolonged, the intact protection of the insert can avoid the problems of workpiece surface scratch, size deviation and the like caused by insert damage, the stamping workpiece is ensured to have higher precision and finish degree, and the production efficiency is improved. The product percent of pass and the quality stability are improved, and the quality guarantee is provided for batch production.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, specifically, it relates to a mold structure for preventing inserts from being pulled apart. Background Technology

[0002] Inserts are commonly used components in mold making, used to shape specific shapes and structures of workpieces.

[0003] However, in the opening and closing operation of traditional molds, inserts often rub directly against other parts. This direct friction can cause problems such as scratches and wear on the inserts, affecting their service life. It can also cause surface scratches and dimensional deviations in stamped workpieces, reducing the product's pass rate and quality stability.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] To address the problem that direct friction often occurs between inserts and other components during the opening and closing operations of traditional molds, which not only leads to scratches and wear on the inserts, affecting their service life, but also causes surface scratches and dimensional deviations in the stamped workpieces, reducing product yield and quality stability, the basic concept of this utility model is as follows:

[0006] A mold structure for preventing insert tearing includes a lower mold and an upper mold.

[0007] The lower mold and the upper mold have mold cores on their opposite surfaces. An insert is installed inside the mold core. An inner groove is provided on the side wall of the insert. A roller is movably inserted into the side wall of the inner groove. An insert plate is installed at the rotation center of the roller. A timing plate is installed at the end of the insert plate. An ejection assembly for ejecting the roller is installed on the side wall of the timing plate.

[0008] The ejection assembly includes a pull rod connected to the side wall of the upper mold, and a push rod is installed at the end of the pull rod. The side wall of the pull rod is in contact with the side wall of the timing plate. A ramp is provided at the connection between the pull rod and the push rod. The ramp is used to squeeze the timing plate to drive the roller to slide out of the inner groove.

[0009] In a preferred embodiment of this utility model, a connecting flange is bolted to the top of the upper mold, and the connecting flange is connected to the output end of the stamping equipment.

[0010] In a preferred embodiment of this utility model, four limiting holes are provided at the four corners of the lower mold, and four limiting rods are installed at the bottom of the upper mold. The limiting rods correspond to the limiting holes, and the limiting rods and limiting holes are used to guide the movement trajectory of the upper mold.

[0011] In a preferred embodiment of this utility model, a positioning rod is installed on the side wall of the lower mold. The positioning rod is movably connected to the synchronization plate. A positioning plate is installed at the end of the positioning rod. The diameter of the positioning plate is larger than the diameter of the positioning rod. The positioning plate is used to prevent the synchronization plate from separating from the positioning rod.

[0012] In a preferred embodiment of this utility model, a compression spring is sleeved on the positioning rod, one end of the compression spring is engaged with the side wall of the synchronization plate, and the other end of the compression spring is engaged with the side wall of the lower mold.

[0013] In a preferred embodiment of this utility model, a positioning sleeve is installed on the side wall of the lower mold, the positioning sleeve is movably inserted into the ejector rod, a baffle is installed at the bottom of the ejector rod, and the baffle is slidably connected to the inner wall of the positioning sleeve.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] This invention utilizes a roller design that allows the roller to move flexibly in and out of the insert's groove. This transforms the direct friction between the insert and other components during mold opening and closing into rolling contact with the roller, significantly reducing friction loss and preventing issues such as scratches and wear caused by friction. Simultaneously, the compression design of the pull rod and ramp, along with the linkage of the synchronous plate, insert plate, and roller, enables ejection and resetting actions. The structure is compact and energy-efficient, significantly extending the insert's service life. Furthermore, the intact protection of the insert prevents surface scratches and dimensional deviations on the workpiece caused by insert damage, ensuring higher precision and surface finish on stamped workpieces, improving product qualification rate and quality stability, and providing quality assurance for mass production.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] In the attached diagram:

[0018] Figure 1 This is a three-dimensional view of the present invention;

[0019] Figure 2 This is a side view of the present invention;

[0020] Figure 3 This is a sectional view of the lower mold of this utility model;

[0021] Figure 4 For the present utility model Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 This is a sectional view of the positioning sleeve of this utility model.

[0023] In the diagram: 1. Lower mold; 2. Mold core; 3. Upper mold; 4. Connecting flange; 5. Limiting hole; 6. Limiting rod; 7. Insert; 8. Inner groove; 9. Roller; 10. Insert plate; 11. Synchronizing plate; 12. Positioning rod; 13. Positioning plate; 14. Compression spring; 15. Tie rod; 16. Ramp; 17. Top rod; 18. Baffle; 19. Positioning sleeve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0025] like Figures 1 to 5 As shown, a mold structure for preventing insert damage includes a lower mold 1 and an upper mold 3.

[0026] The lower mold 1 and the upper mold 3 have a mold core 2 on their opposite surfaces. An insert 7 is installed inside the mold core 2. An inner groove 8 is provided on the side wall of the insert 7. A roller 9 is movably inserted into the side wall of the inner groove 8. An insert plate 10 is installed at the rotation center of the roller 9. A timing plate 11 is installed at the end of the insert plate 10. An ejection assembly for ejecting the roller 9 is installed on the side wall of the timing plate 11.

[0027] The ejection assembly includes a pull rod 15 connected to the side wall of the upper mold 3. A push rod 17 is installed at the end of the pull rod 15. The side wall of the pull rod 15 is in contact with the side wall of the synchronization plate 11. A ramp 16 is provided at the connection between the pull rod 15 and the push rod 17. The ramp 16 is used to squeeze the synchronization plate 11 to drive the roller 9 to slide out of the inner groove 8.

[0028] like Figures 1 to 5 As shown, in a specific embodiment, a connecting flange 4 is bolted to the top of the upper mold 3, and the connecting flange 4 is connected to the output end of the stamping equipment. This detachable bolted connection method facilitates the installation, disassembly, and maintenance of the mold, improving the convenience of mold use.

[0029] like Figures 1 to 5 As shown, furthermore, four limiting holes 5 are provided at the four corners of the lower die 1, and four limiting rods 6 are installed at the bottom of the upper die 3. The limiting rods 6 correspond to the limiting holes 5, and the limiting rods 6 and limiting holes 5 are used to guide the movement trajectory of the upper die 3. This design can accurately constrain the movement path of the upper die 3, preventing it from deviating during the stamping process, thereby ensuring the stamping accuracy of the workpiece and reducing the occurrence of workpiece dimensional deviations or defective products caused by die misalignment.

[0030] like Figures 1 to 5As shown, furthermore, a positioning rod 12 is installed on the side wall of the lower mold 1. The positioning rod 12 is movably inserted into the synchronous plate 11. A positioning plate 13 is installed at the end of the positioning rod 12. The diameter of the positioning plate 13 is larger than that of the positioning rod 12. The positioning plate 13 is used to prevent the synchronous plate 11 from separating from the positioning rod 12. The cooperation between the positioning rod 12 and the positioning plate 13 provides a stable guide for the movement of the synchronous plate 11, ensuring that the synchronous plate 11 will not deviate from the predetermined track during the movement, thus ensuring the stability and reliability of the entire ejection assembly.

[0031] like Figures 1 to 5 As shown, a compression spring 14 is further sleeved on the positioning rod 12. One end of the compression spring 14 is engaged with the side wall of the synchronization plate 11, and the other end is engaged with the side wall of the lower mold 1. During the cycle of mold opening and closing, the conversion and release of the elastic potential energy of the compression spring 14 can precisely control the timing of the roller 9's entry and exit, ensuring that each action is completed accurately.

[0032] like Figures 1 to 5 As shown, furthermore, a positioning sleeve 19 is installed on the side wall of the lower mold 1. The positioning sleeve 19 is movably inserted into the ejector rod 17. A baffle 18 is installed at the bottom of the ejector rod 17, and the baffle 18 is slidably connected to the inner wall of the positioning sleeve 19. The cooperation between the positioning sleeve 19 and the baffle 18 plays a good role in limiting and guiding the movement of the ejector rod 17, preventing the ejector rod 17 from shaking or deviating during the movement, ensuring the accuracy of the extrusion assembly's pressing action on the synchronous plate 11, thereby ensuring that the roller 9 can accurately slide out and retract from the inner groove 8 according to the design requirements.

[0033] The implementation principle of a mold structure to prevent insert tearing is as follows:

[0034] When the stamping equipment starts, the connecting flange 4 drives the upper die 3 to move downwards. The limit rod 6 is precisely inserted into the limit hole 5, providing guidance for the movement of the upper die 3 and ensuring that it moves smoothly downwards along the predetermined trajectory. Finally, through the cooperation of the upper die 3 and the lower die 1, the stamping operation of the workpiece is completed.

[0035] When the upper mold 3 is reset, it begins to move upward, and the pull rod 15 connected to the side wall of the upper mold 3 also moves upward. Because a ramp 16 is provided at the connection between the pull rod 15 and the ejector rod 17, the ramp 16 gradually contacts the synchronization plate 11 and exerts a squeezing effect on it as the pull rod 15 moves upward. After being squeezed, the synchronization plate 11 moves along the positioning rod 12 towards the insert 7, and simultaneously drives the roller 9 to slide out of the inner groove 8 on the side wall of the insert 7 via the insert plate 10.

[0036] During the movement of the synchronizing plate 11, the compression spring 14 on the positioning rod 12 is compressed, storing elastic potential energy. When the ramp 16 is no longer pressed against the synchronizing plate 11, the compression spring 14 releases its elastic potential energy, pushing the synchronizing plate 11 back to its original position along the positioning rod 12, causing the roller 9 to return to the inner groove 8.

[0037] During this process, the push rod 17 in the ejector assembly slides inside the positioning sleeve 19, and the baffle 18 slides with the inner wall of the positioning sleeve 19, which plays a role in limiting and guiding, ensuring that the movement of the push rod 17 is smooth and reliable.

[0038] With this design, when the mold is opened and closed, the roller 9 can move in and out flexibly in the inner groove 8 of the insert 7, avoiding direct friction and scratches between the insert 7 and other parts, thus effectively protecting the insert 7, improving the service life of the mold and the quality of the stamped workpiece.

[0039] The above embodiments are merely preferred embodiments of the present utility model and are only used to explain the present utility model, not to limit the present utility model. Any changes, substitutions, combinations, simplifications, modifications, etc., made by those skilled in the art without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A mold structure for preventing insert tearing, comprising a lower mold (1) and an upper mold (3), characterized in that: The lower mold (1) and the upper mold (3) have mold cores (2) on their opposite surfaces. An insert (7) is installed inside the mold core (2). An inner groove (8) is provided on the side wall of the insert (7). A roller (9) is movably inserted into the side wall of the inner groove (8). A plate (10) is installed at the rotation center of the roller (9). A timing plate (11) is installed at the end of the plate (10). An ejection assembly for ejecting the roller (9) is installed on the side wall of the timing plate (11). The ejection assembly includes a pull rod (15) connected to the side wall of the upper mold (3). A push rod (17) is installed at the end of the pull rod (15). The side wall of the pull rod (15) is in contact with the side wall of the synchronization plate (11). A ramp (16) is provided at the connection between the pull rod (15) and the push rod (17). The ramp (16) is used to squeeze the synchronization plate (11) to drive the roller (9) to slide out from the inner groove (8).

2. The mold structure for preventing insert tearing according to claim 1, characterized in that, The top of the upper mold (3) is bolted with a connecting flange (4), which is connected to the output end of the stamping equipment.

3. The mold structure for preventing insert tearing according to claim 1, characterized in that, The lower mold (1) has four limiting holes (5) at its four corners, and the upper mold (3) has four limiting rods (6) installed at its bottom. The limiting rods (6) correspond to the limiting holes (5) and the limiting rods (6) and the limiting holes (5) are used to guide the movement trajectory of the upper mold (3).

4. The mold structure for preventing insert tearing according to claim 1, characterized in that, A positioning rod (12) is installed on the side wall of the lower mold (1). The positioning rod (12) is movably connected to the synchronization plate (11). A positioning plate (13) is installed at the end of the positioning rod (12). The diameter of the positioning plate (13) is larger than that of the positioning rod (12). The positioning plate (13) is used to prevent the synchronization plate (11) from separating from the positioning rod (12).

5. The mold structure for preventing insert tearing according to claim 4, characterized in that, A compression spring (14) is sleeved on the positioning rod (12). One end of the compression spring (14) is engaged with the side wall of the synchronization plate (11), and the other end of the compression spring (14) is engaged with the side wall of the lower mold (1).

6. The mold structure for preventing insert tearing according to claim 1, characterized in that, The lower mold (1) is equipped with a positioning sleeve (19) on its side wall. The positioning sleeve (19) is movably connected to the push rod (17). The bottom of the push rod (17) is equipped with a baffle (18), which is slidably connected to the inner wall of the positioning sleeve (19).

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