Plastic mould fastening device

Abstract

The utility model relates to the technical field of molds, and discloses a plastic mold fastening device which comprises an upper mold and a lower mold, an upper supporting plate is fixedly arranged at the upper end of the upper mold, a lower supporting plate is fixedly arranged at the lower end of the lower mold, and pressing rods are fixedly arranged at the centers, close to the front end and the rear end, of the lower end face of the upper supporting plate. Clamping rods are fixedly arranged on the lower end faces, located on the two sides of the pressing rods, of the upper supporting plate correspondingly, pushing heads are fixedly arranged at the lower ends of the two pressing rods correspondingly, and inserting holes are formed in the positions, close to the lower ends, of one sides of the four clamping rods correspondingly; push holes are formed in the centers, close to the front end and the rear end, of the upper end face of the lower supporting plate, and through holes are formed in the positions, located on the two sides of the push holes, of the upper end face of the lower supporting plate. According to the plastic mold fastening device, the problems that a traditional plastic mold fastening device is not high in opening and closing integrating degree and poor in connection leakproofness are effectively solved, and powerful technical support is provided for high-quality production of plastic products.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field especially relates to a plastic mould fastening device. BACKGROUND

[0002] The plastic mould is a tool for producing plastic products, which forms the product of predetermined shape after cooling and solidification by injecting the plastic material in molten state into the cavity of the mould. The plastic mould is usually made of high-strength materials such as steel and aluminum, has high precision and complex structure to ensure that the produced plastic products are accurate in size, smooth in surface and reasonable in structure. The design and manufacture of the mould are the key links in the production process of plastic products, which directly affect the quality, production efficiency and cost of the products. The plastic mould is widely used in automobile, electronic, home appliance, toy, packaging and other industries.

[0003] The mould is various moulds and tools used in the processes of injection molding, blow molding, extrusion, die casting, forging and pressing, smelting or stamping in industrial production to manufacture the desired products. In the operation process of the mould, the mould is usually pushed downward by the telescopic rod to form the model. However, this extrusion method applied only from the top end is prone to deviation during movement, which makes the opening and closing fit of the mould not high, and further affects the connection tightness between the moulds. The insufficient tightness may adversely affect the production and processing quality of the model.

[0004] Therefore, the technical personnel in the art provide a plastic mould fastening device to solve the problems in the background art. SUMMARY

[0005] The utility model discloses a plastic mould fastening device, which has higher connection tightness and better production quality to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A plastic mould fastening device includes an upper mould and a lower mould, the upper end of the upper mould is fixedly provided with an upper support plate, the lower end of the lower mould is fixedly provided with a lower support plate, the lower end surface of the upper support plate is fixedly provided with a pressing rod at the center of the front end and the rear end, the lower end surface of the upper support plate on both sides of the pressing rod is fixedly provided with a clamping rod, the lower end of the two pressing rods is fixedly provided with a push head, and the lower end of the four clamping rods is provided with a insertion hole.

[0008] The lower support plate upper end face is provided with a push hole at the center of the front end and the rear end, the lower support plate upper end face is provided with a through hole at both sides of the push hole, the lower support plate lower end face is fixedly provided with a fixed block between the through hole and the push hole, the center of one side of the four fixed blocks is provided with a limiting hole, the four limiting holes are movably sleeved with a plug rod, the end of the plug rod close to the push hole is fixedly provided with an inclined block, the rod body of the plug rod close to the inclined block is fixedly sleeved with a plug rod, and the rod body of the plug rod is movably sleeved with a stretching spring.

[0009] Further, the opposite side between the two inclined blocks is provided with a first inclined surface, and the two sides of the push head are provided with a second inclined surface.

[0010] Further, the inclination of the first inclined surface and the second inclined surface is the same.

[0011] Further, the clamping rod is located at the upper end of the through hole and has a size smaller than the through hole.

[0012] Further, the push head is located at the upper end of the push hole and has a size smaller than the push hole.

[0013] Further, the size of the plug rod is smaller than the size of the plug hole.

[0014] Further, the stretching spring is located between the limiting ring and the fixed block, and the two ends are fixedly connected with the limiting ring and the fixed block respectively.

[0015] The utility model has the advantages of the following beneficial effects:

[0016] The plastic mold fastening device provided by the utility model realizes the cooperation of the push head, the clamping rod, the inclined block and the plug rod, ensures the high-precision alignment of the upper mold and the lower mold when being closed, reduces the deviation between the molds, improves the airtightness of the mold connection, directly improves the sealing effect of the plastic product in the molding process, avoids the leakage of plastic material caused by the gap between the molds, ensures the size accuracy, smooth surface and reasonable structure of the product, and improves the quality of the final product.

[0017] This utility model proposes a plastic mold fastening device. This device utilizes the interaction between the pusher and the inclined block when the upper mold moves downward to automatically complete the insertion of the insert rod and the descent of the locking rod, eliminating the need for manual intervention. This improves the efficiency of mold closure and reduces the possibility of operational errors. When the mold opens, the insert rod automatically returns to its original position through the action of a tension spring, ensuring that the insert rod can be correctly inserted into the insertion hole during the next closure, thus improving the mold's service life and reliability. The device has a compact design, occupies little space, and is easy to install on existing mold equipment without affecting the overall layout and operating space. The design principle of this fastening device is applicable to various plastic molds of different shapes and sizes, showing broad application prospects and strong adaptability. The device involves few moving parts, has a simple structure, facilitates daily maintenance and troubleshooting, and reduces production costs. Attached Figure Description

[0018] Figure 1 This is a left-side isometric view of the present invention;

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

[0020] Figure 3 This is a bottom-view axonometric schematic diagram of the present invention;

[0021] Figure 4 This is an isometric schematic diagram of the pusher, locking rod, and insertion rod of this utility model.

[0022] Legend:

[0023] 1. Upper support plate; 2. Upper mold; 3. Lower support plate; 4. Lower mold; 5. Insertion hole; 6. Through hole; 7. Fixing block; 8. Inclined block; 9. Push hole; 10. Push head; 11. First inclined surface; 12. Clamping rod; 13. Pressure rod; 14. Limiting ring; 15. Insertion rod; 16. Limiting hole; 17. Tension spring; 18. Second inclined surface. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1-4The utility model provides a kind of embodiment: a plastic mold fastening device, including upper die 2 and lower die 4, upper die 2 upper end is fixedly provided with upper support plate 1, lower die 4 lower end is fixedly provided with lower support plate 3, the lower end surface of upper support plate 1 is fixedly provided with pressure rod 13 at the center of front end and rear end, the lower end surface of upper support plate 1 located pressure rod 13 both sides is fixedly provided with clamping rod 12, two pressure rods 13 lower end are fixedly provided with push head 10, four clamping rods 12 one side lower end are all provided with insertion hole 5;

[0026] The lower end surface of lower support plate 3 is fixedly provided with fixed block 7 between through hole 6 and push hole 9, four fixed blocks 7 one side center are all provided with limiting hole 16, four limiting holes 16 are all movably sleeved with insertion rod 15, one end of four insertion rods 15 close to push hole 9 is fixedly provided with inclined block 8, insertion rod 15 is fixedly sleeved with insertion rod 15 on the rod body of four insertion rods 15 close to inclined block 8, and the rod body of four insertion rods 15 is movably sleeved with stretch spring 17.

[0027] One side of two two between four inclined blocks 8 is provided with No. 1 inclined surface 11, and both sides of push head 10 are provided with No. 2 inclined surface 18. The inclination of No. 1 inclined surface 11 and No. 2 inclined surface 18 is same. Clamping rod 12 is located at the upper end of through hole 6, and the size is less than through hole 6. Push head 10 is located at the upper end of push hole 9, and the size is less than push hole 9. The size of insertion rod 15 is less than the size of insertion hole 5. Stretch spring 17 is located between limiting ring 14 and fixed block 7, and both ends are fixedly connected with limiting ring 14 and fixed block 7 respectively.

[0028] Specifically, push head 10 is located at the lower end of pressure rod 13, cooperates with No. 1 inclined surface 11 and No. 2 inclined surface 18. When upper die 2 moves down, push head 10 passes through push hole 9 on lower support plate 3. No. 1 inclined surface 11 is located on inclined block 8, and contacts with No. 2 inclined surface 18 on push head 10. When contacting, the interaction of push head 10 and No. 1 inclined surface 11 will push inclined block 8 apart. Inclined block 8 is fixed at one end of insertion rod 15, when inclined block 8 is pushed apart, insertion rod 15 will also be pushed apart. Insertion rod 15 is movably sleeved in limiting hole 16 of fixed block 7, when inclined block 8 is pushed apart, insertion rod 15 will be inserted into insertion hole 5 of upper die 2, ensure that upper die 2 and lower die 4 are closely connected. These designs make the mold can be automatically aligned and closely connected when closing, reduce the deviation caused by manual operation or unreasonable structure design, thereby improve the connection airtightness.

[0029] The insertion hole 5 is located on the upper mold 2 and cooperates with the insertion rod 15. After the insertion rod 15 is inserted into the insertion hole 5, it ensures the tight connection between the molds, avoiding the leakage of plastic material from the mold gap during the molding process. The clamping rod 12 is located below the upper support plate 1 and cooperates with the through hole 6. The clamping rod 12 passes through the through hole 6, further fixing the position of the upper mold 2 and the lower mold 4, ensuring that the molds remain stable when closed. The improvement of the sealing performance and the stability of the mold position directly improves the molding effect of the plastic product, ensuring the size accuracy, smooth surface and reasonable structure of the product, thereby improving the production quality.

[0030] The push hole 9 is located on the lower support plate 3 and cooperates with the push head 10. The push head 10 passes through the push hole 9 and contacts the first inclined surface 11, thereby pushing the inclined block 8. The tension spring 17 is located between the limiting ring 14 and the fixed block 7, and the two ends are fixedly connected with the limiting ring 14 and the fixed block 7 respectively. When the push head 10 pushes the inclined block 8, the tension spring 17 is compressed; when the upper mold 2 rises, the tension spring 17 returns to its original state, pushing the insertion rod 15 and the inclined block 8 back to their original positions. This design makes the closing and opening process of the mold completely automatic, reducing the need for manual intervention and improving production efficiency and operation reliability.

[0031] When the upper mold 2 rises, the elastic force of the tension spring 17 automatically pushes the insertion rod 15 and the inclined block 8 back to their original positions, ensuring that the insertion rod 15 can be correctly inserted into the insertion hole 5 during the next closing, avoiding the trouble of repeated operation. The fixed block 7 is fixed at the lower end face of the lower support plate 3, and a limiting hole 16 is formed in the inside for movably sleeving the insertion rod 15. This design is compact and does not occupy additional space. The limiting ring 14 is fixed on the rod of the insertion rod 15 and cooperates with the tension spring 17 to ensure the stability of the insertion rod 15 during movement and the reliability of the reset. The inclined surface design of the first inclined surface 11 and the second inclined surface 18 allows the push head 10 and the inclined block 8 to smoothly push the insertion rod 15 apart when they contact, which is suitable for plastic molds of different shapes and sizes and has wide applicability. The device mainly involves the push head 10, the clamping rod 12, the inclined block 8, the insertion rod 15 and the tension spring 17, etc., which has a simple structure and is easy to maintain and troubleshoot. The fixed connection mode of the tension spring 17 ensures its stability and reliability during use, reducing the frequency and complexity of maintenance.

[0032] Working principle: In use, the upper mold 2 moves down, and when it moves to a certain position, the push head 10 passes through the push hole 9, the first inclined surface 11 and the second inclined surface 18 contact, which can push the insertion rod 15 to both sides, at the same time, the clamping rod 12 descends and passes through the through hole 6, when it moves to a certain position, the insertion rod 15 is inserted into the insertion hole 5, so that the upper mold 2 and the lower mold 4 are tightly connected, at this time, the tension spring 17 is compressed, when the upper mold 2 rises back to its original position, the insertion rod 15 returns to its original position by using the action of the tension spring 17.

[0033] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A plastic mold fastening device comprising an upper mold (2) and a lower mold (4), characterized by: The upper die (2) is fixedly provided with an upper support plate (1) at the upper end, the lower die (4) is fixedly provided with a lower support plate (3) at the lower end, the lower end surface of the upper support plate (1) is fixedly provided with a pressing rod (13) at the center of the front end and the rear end, the lower end surface of the upper support plate (1) is fixedly provided with a clamping rod (12) on both sides of the pressing rod (13), the lower end of the two pressing rods (13) is fixedly provided with a push head (10), and the side of the four clamping rods (12) close to the lower end is provided with an insertion hole (5). The upper end surface of the lower support plate (3) is provided with a push hole (9) at the center of the front end and the rear end, the upper end surface of the lower support plate (3) is provided with a through hole (6) on both sides of the push hole (9), the lower end surface of the lower support plate (3) is fixedly provided with a fixed block (7) between the through hole (6) and the push hole (9), the center of one side of the four fixed blocks (7) is provided with a limiting hole (16), the four limiting holes (16) are movably sleeved with an insertion rod (15) inside, one end of the four insertion rods (15) close to the push hole (9) is fixedly provided with an inclined block (8), the rod body of the four insertion rods (15) close to the inclined block (8) is fixedly sleeved with an insertion rod (15), and the rod body of the four insertion rods (15) is movably sleeved with a stretching spring (17).

2. A plastic mold fastening device according to claim 1, characterized by: Opposite sides between the four inclined blocks (8) are provided with a first inclined surface (11), and the two sides of the push head (10) are provided with a second inclined surface (18).

3. A plastic mold fastening device according to claim 2, wherein: The inclination of the first inclined surface (11) and the second inclined surface (18) is the same.

4. The plastic mold fastening device of claim 1, wherein: The clamping rod (12) is located at the upper end of the through hole (6) and has a size smaller than the through hole (6).

5. The plastic mold fastening device of claim 1, wherein: The push head (10) is located at the upper end of the push hole (9) and has a size smaller than the push hole (9).

6. A plastic mold fastening device according to claim 1, wherein: The size of the insertion rod (15) is smaller than the size of the insertion hole (5).

7. A plastic mold fastening device according to claim 1, wherein: The stretching spring (17) is located between the limiting ring (14) and the fixed block (7), and the two ends are fixedly connected with the limiting ring (14) and the fixed block (7) respectively.

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