Injection mold locking mechanism

Abstract

The utility model relates to the technical field of injection mold locking mechanisms, in particular to an injection mold locking mechanism which comprises a limiting frame, a locking mechanism and a locking mechanism. First limiting blocks are arranged on the side surfaces of the limiting plates; the mold has the beneficial effects that a screw rod rotates along a threaded hole formed in a connecting plate, so that the connecting plate slides along a limiting groove, a second limiting block fixedly connected to a supporting plate is clamped into a limiting frame to be clamped with a first limiting block fixedly connected to a limiting plate, and the upper mold body and the lower mold body are locked; the first limiting block and the second limiting block are clamped through screw transmission, locking is more stable, the phenomenon that locking fails due to the fact that the first limiting block and the second limiting block are separated from each other is avoided, the driving motor rotates reversely to enable the screw to rotate reversely, the second limiting block is separated from the limiting frame, locking is relieved, and people do not need to get close to the mold to conduct manual unlocking. The burden of workers is relieved, and the safety of the workers during working is improved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold locking mechanisms, specifically an injection mold locking mechanism. Background Technology

[0002] Injection molds are tools used to produce plastic products. They are made by injecting heated and molten plastic material into a mold cavity, which then cools and solidifies to obtain the desired product shape.

[0003] In the prior art, a locking mechanism for an injection mold, disclosed in patent publication number CN220482485U, includes a lower mold body and an upper mold body. The upper mold body has an injection hole, and the lower mold body has a locking mechanism body. The locking mechanism body includes two limiting frames symmetrically fixedly mounted on the lower mold body. Two fixing frames are symmetrically fixedly mounted on the surface of each limiting frame. A spring is fixedly mounted inside each fixing frame, and a fixing block is fixedly mounted at one end of each spring. A support plate located on one side of the limiting frame is fixedly mounted between the two fixing blocks. Multiple first locking strips are evenly mounted from top to bottom on one side of the support plate. Two limiting plates are fixedly mounted on the upper mold body, and multiple second locking strips that engage with the first locking strips are evenly mounted on one side of each limiting plate. This invention, through the design of the locking mechanism body, not only achieves a locking function but is also simple to use and has a low cost.

[0004] However, the preload provided by the spring on the device is insufficient to maintain long-term stability, which causes relative sliding between the clips and leads to loosening between the molds, resulting in locking failure. In addition, it requires manual pulling of the rubber sleeve to release the lock, which is inconvenient for personnel to use. Utility Model Content

[0005] The purpose of this invention is to provide a locking mechanism for injection molds to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a locking mechanism for an injection mold, comprising: a limiting frame, the limiting frame being connected to a lower mold body, a connecting block being provided on the side of the limiting frame, a limiting groove being provided on the side of the connecting block, a screw being provided in the limiting groove, the screw being connected to a threaded hole provided on the connecting plate, the connecting plate being connected to a support plate, and a plurality of second limiting blocks being provided on the side of the support plate;

[0007] A limiting plate, with a first limiting block provided on the side of the limiting plate.

[0008] Preferably, the first limiting block has a square plate-shaped structure, and the first limiting block is fixedly connected to the side of the limiting plate. The limiting plate has a square plate-shaped structure and is fixedly connected to the upper mold body. One end of the limiting plate can be inserted into the limiting frame.

[0009] Preferably, a limiting frame is fixedly installed on the lower mold body, and a connecting block is fixedly connected to the side of the limiting frame. The connecting block has a square plate-like structure, and a limiting groove is opened on the side of the connecting block. The limiting groove has a square groove-like structure.

[0010] Preferably, a bellows-style protective cover is fixedly installed on the connecting block, and the other end of the bellows-style protective cover is fixedly installed on the connecting plate. The connecting plate has an "L"-shaped plate structure, and one end of the connecting plate is stuck in the limiting groove. The connecting plate can slide along the limiting groove.

[0011] Preferably, a screw is provided in the limiting groove, one end of the screw is rotatably connected to the connecting block, the other end of the screw is fixedly connected to the connecting shaft, the connecting shaft is rotatably connected to the connecting block, the connecting shaft is rotatably connected to the protective box, and the protective box is fixedly installed on the lower mold body.

[0012] Preferably, the screw is threadedly connected to the threaded hole in the connecting plate, the connecting plate is fixedly connected to the support plate, the support plate has a square plate structure, and a plurality of second limiting blocks are fixedly connected to the support plate, the second limiting blocks having a square plate structure.

[0013] Preferably, the other end of the connecting shaft is fixedly connected to a worm gear, the worm gear meshes with a worm, the worm is fixedly connected to the drive motor transmission shaft, and the drive motor is fixedly mounted on the lower mold body.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The injection mold locking mechanism proposed in this utility model involves a screw rotating along a threaded hole in a connecting plate, causing the connecting plate to slide along a limiting groove. This causes the support plate to move accordingly, allowing a second limiting block fixedly connected to the support plate to engage with a limiting frame. This locks the upper mold body and the lower mold body together. The screw drive ensures stable engagement between the first and second limiting blocks, preventing them from disengaging and causing locking failure. Furthermore, the screw reverses when the drive motor reverses, disengaging the second limiting block from the limiting frame and releasing the lock. This eliminates the need for manual unlocking by personnel approaching the mold, reducing workload and improving worker safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the device structure of this utility model;

[0017] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 3 This is a schematic cross-sectional view of a partial structure of the present invention;

[0019] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0020] Figure 5 This is a cross-sectional view of the disassembled structural part of the device of this utility model;

[0021] Figure 6 for Figure 5 Enlarged structural diagram at point C;

[0022] Figure 7 for Figure 5 Enlarged structural diagram at point D.

[0023] In the diagram: 1. Upper mold body; 2. Lower mold body; 3. Limiting plate; 4. First limiting block; 5. Limiting frame; 6. Support plate; 7. Second limiting block; 8. Connecting block; 9. Limiting groove; 10. Screw.

[0024] 11. Connecting plate; 12. Connecting shaft; 13. Protective box; 14. Worm gear; 15. Worm; 16. Drive motor; 17. Bellows-style protective cover. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Example 1

[0027] Please see Figures 1-7 This utility model provides a technical solution: a locking mechanism for an injection mold, comprising: a limiting frame 5, which is connected to the lower mold body 2; a connecting block 8 is provided on the side of the limiting frame 5; a limiting groove 9 is provided on the side of the connecting block 8; a screw 10 is provided in the limiting groove 9; the screw 10 is connected to a threaded hole on a connecting plate 11; the connecting plate 11 is connected to a support plate 6; a plurality of second limiting blocks 7 are provided on the side of the support plate 6; and a limiting plate 3, on the side of which a first limiting block 4 is provided.

[0028] In practical use, the screw 10 rotates along the threaded hole on the connecting plate 11, causing the connecting plate 11 to slide along the limiting groove 9, so that the second limiting block 7 fixedly connected to the support plate 6 is engaged in the limiting frame 5, so that the second limiting block 7 and the first limiting block 4 are engaged with each other. Through the above, the upper mold body 1 and the lower mold body 2 are locked, which is more stable and avoids the phenomenon of the first limiting block 4 and the second limiting block 7 disengaging from each other, thus causing the locking failure. Furthermore, by reversing the drive motor 16, the screw 10 is reversed, causing the second limiting block 7 to disengage from the limiting frame 5 and thus releasing the lock, without the need for personnel to approach the mold to manually unlock it.

[0029] Example 2

[0030] To improve the reliability of the device, a first limiting block 4 is provided based on Embodiment 1. The first limiting block 4 has a square plate-like structure and is fixedly connected to the side of the limiting plate 3. The limiting plate 3 also has a square plate-like structure and is fixedly connected to the upper mold body 1. One end of the limiting plate 3 can be inserted into the limiting frame 5. In the initial state, the second limiting block 7 is located outside the limiting frame 5, as in the example... Figure 6 As shown, when the upper mold body 1 moves downward, the limiting plate 3 and the first limiting block 4 are engaged in the limiting frame 5;

[0031] The other end of the connecting shaft 12 is fixedly connected to the worm wheel 14. The worm wheel 14 meshes with the worm 15. The worm 15 is fixedly connected to the transmission shaft of the drive motor 16. The drive motor 16 is fixedly installed on the lower mold body 2. When the drive motor 16 is started, it drives the worm 15 to rotate. The worm 15 meshes with the worm wheel 14, drives the worm wheel 14 to rotate, causes the connecting shaft 12 to rotate, and drives the screw 10 to rotate.

[0032] The screw 10 is threadedly connected to the threaded hole on the connecting plate 11. The connecting plate 11 is fixedly connected to the support plate 6. The support plate 6 has a square plate structure. Several second limiting blocks 7 are fixedly connected to the support plate 6. The second limiting blocks 7 have a square plate structure, so that the screw 10 rotates along the threaded hole on the connecting plate 11 and the connecting plate 11 slides along the limiting groove 9.

[0033] A limiting frame 5 is fixedly installed on the lower mold body 2. A connecting block 8 is fixedly connected to the side of the limiting frame 5. The connecting block 8 has a square plate-like structure and a limiting groove 9 is formed on the side of the connecting block 8. The limiting groove 9 has a square groove structure, which allows the support plate 6 to move along with it. This causes the second limiting block 7 fixedly connected to the support plate 6 to engage with the limiting frame 5, so that the second limiting block 7 and the first limiting block 4 fixedly connected to the limiting plate 3 are mutually engaged, as in the example. Figure 4As shown, the upper mold body 1 and the lower mold body 2 are locked together. The screw 10 drives the first limiting block 4 and the second limiting block 7 to engage, making the locking more stable and preventing the first limiting block 4 and the second limiting block 7 from disengaging and causing the locking to fail. Furthermore, the drive motor 16 reverses, causing the screw 10 to reverse, which disengages the second limiting block 7 from the limiting frame 5 and releases the lock. This eliminates the need for personnel to approach the mold to manually unlock it, reducing the burden on personnel, improving the safety of workers, and facilitating practical use.

[0034] Example 3

[0035] Based on Embodiment 2, a connecting block 8 is provided to improve the performance of the device. A bellows-style protective cover 17 is fixedly installed on the connecting block 8. The other end of the bellows-style protective cover 17 is fixedly installed on the connecting plate 11. The connecting plate 11 has an "L"-shaped plate structure. One end of the connecting plate 11 is stuck in the limiting groove 9. The connecting plate 11 can slide along the limiting groove 9. The bellows-style protective cover 17 covers the limiting groove 9 opened on the connecting block 8. By setting the bellows-style protective cover 17, impurities can be prevented from entering the limiting groove 9 and affecting the transmission of the screw 10. The bellows-style protective cover 17 moves, extends, and retracts with the connecting plate 11, thereby improving the performance of the device.

[0036] A screw 10 is provided in the limiting groove 9. One end of the screw 10 is rotatably connected to the connecting block 8, and the other end of the screw 10 is fixedly connected to the connecting shaft 12. The connecting shaft 12 is rotatably connected to the connecting block 8 and rotatably connected to the protective box 13. The protective box 13 is fixedly installed on the lower mold body 2, and the worm gear 14 and worm 15 are set in the protective box 13. This can prevent dust from adhering to the worm gear 14 and worm 15 and affecting their transmission, thereby improving the performance of the device.

[0037] In actual use, the screw 10 rotates along the threaded hole on the connecting plate 11, causing the connecting plate 11 to slide along the limiting groove 9, which in turn moves the support plate 6. This causes the second limiting block 7, which is fixedly connected to the support plate 6, to engage with the limiting frame 5. The second limiting block 7 and the first limiting block 4, which is fixedly connected to the limiting plate 3, engage with each other. This achieves the locking of the upper mold body 1 and the lower mold body 2. The screw 10 drives the first limiting block 4 and the second limiting block 7 to engage, making the locking more stable and preventing the first limiting block 4 and the second limiting block 7 from disengaging and causing the locking to fail. Furthermore, the screw 10 is reversed by the drive motor 16, causing the second limiting block 7 to disengage from the limiting frame 5 and thus releasing the lock. This eliminates the need for personnel to manually unlock the mold, reducing the burden on personnel and improving the safety of workers.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A locking mechanism for an injection mold, comprising: A limiting frame (5) is connected to the lower mold body (2). The limiting frame (5) is characterized in that: a connecting block (8) is provided on the side of the limiting frame (5), a limiting groove (9) is opened on the side of the connecting block (8), a screw (10) is provided in the limiting groove (9), the screw (10) is connected to the threaded hole opened on the connecting plate (11), the connecting plate (11) is connected to the support plate (6), and a plurality of second limiting blocks (7) are provided on the side of the support plate (6). Limiting plate (3), with a first limiting block (4) on the side of the limiting plate (3).

2. The injection mold locking mechanism according to claim 1, characterized in that: The first limiting block (4) has a square plate structure. The first limiting block (4) is fixedly connected to the side of the limiting plate (3). The limiting plate (3) has a square plate structure. The limiting plate (3) is fixedly connected to the upper mold body (1). One end of the limiting plate (3) can be inserted into the limiting frame (5).

3. The injection mold locking mechanism according to claim 1, characterized in that: A limiting frame (5) is fixedly installed on the lower mold body (2). A connecting block (8) is fixedly connected to the side of the limiting frame (5). The connecting block (8) has a square plate structure. A limiting groove (9) is opened on the side of the connecting block (8). The limiting groove (9) has a square groove structure.

4. The injection mold locking mechanism according to claim 1, characterized in that: The connecting block (8) is fixedly installed with a bellows-style protective cover (17), and the other end of the bellows-style protective cover (17) is fixedly installed on the connecting plate (11). The connecting plate (11) has an "L" shaped plate structure. One end of the connecting plate (11) is stuck in the limiting groove (9), and the connecting plate (11) can slide along the limiting groove (9).

5. The injection mold locking mechanism according to claim 1, characterized in that: A screw (10) is provided in the limiting groove (9). One end of the screw (10) is rotatably connected to the connecting block (8), and the other end of the screw (10) is fixedly connected to the connecting shaft (12). The connecting shaft (12) is rotatably connected to the connecting block (8), and the connecting shaft (12) is rotatably connected to the protective box (13). The protective box (13) is fixedly installed on the lower mold body (2).

6. The injection mold locking mechanism according to claim 1, characterized in that: The screw (10) is threadedly connected to the threaded hole on the connecting plate (11). The connecting plate (11) is fixedly connected to the support plate (6). The support plate (6) has a square plate structure. Several second limiting blocks (7) are fixedly connected to the support plate (6). The second limiting blocks (7) have a square plate structure.

7. The injection mold locking mechanism according to claim 5, characterized in that: The other end of the connecting shaft (12) is fixedly connected to the worm wheel (14), the worm wheel (14) meshes with the worm (15), the worm (15) is fixedly connected to the drive shaft of the drive motor (16), and the drive motor (16) is fixedly installed on the lower mold body (2).

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