High-precision switch buckle injection mold forming structure

Abstract

The utility model provides a high-precision switch buckle injection mold forming structure which comprises a top plate, an upper mold, a lower mold, an ejector plate and a bottom plate, a cavity used for forming a buckle body is formed between the upper mold and the lower mold, sliding grooves are formed in the two side ends of the lower mold, side pulling blocks are arranged in the sliding grooves in a sliding mode, inclined guide holes are formed in the side pulling blocks, and the inclined guide holes are communicated with the ejector plate. An inclined guide rod is fixedly arranged at the bottom of the upper die, when the upper die is separated from the lower die, the inclined guide rod drives the side pulling block to move, a core pulling rod is arranged on the side pulling block and used for forming connecting holes in the two sides of a buckle body, a core pulling hole is further formed between the upper die and the lower die, and the core pulling rod is arranged in the core pulling hole in a sliding mode. Automatic core pulling during mold opening is achieved, so that the manufacturing cost of the mold is reduced, core pulling is conducted on the connecting holes in the two sides through one core pulling rod, core pulling of the double-row cavities can be achieved through the side pulling blocks on the two sides, and therefore the utilization rate of the mold is increased.

Description

Technical Field

[0001] The utility model relates to a mold, in particular to a high-precision switch buckle injection mold molding structure. Background Art

[0002] like Figure 1 As shown, a switch buckle includes a buckle body 90 and connecting ears 91 arranged at both ends of the buckle body 90, and a connecting hole 92 is opened on the connecting ear 91. The buckle body 90 is made of plastic. The above-mentioned switch buckle is usually manufactured by mold injection molding, so the two connecting holes 92 will form undercuts after injection molding. The general solution is to respectively set oil cylinders on the left and right sides of the buckle body 90, and use the oil cylinders on both sides to pull the core of the two connecting holes 92 at the same time. However, the size of the above-mentioned buckle body 90 is small. When arranging the position of the cavity 6, only a single row of cavities 6 can be set by using the core pulling on both sides, which leads to a low utilization rate of the mold and a low output quantity each time the mold is opened. At the same time, using the oil cylinder for core pulling will increase the manufacturing cost of the mold. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a high-precision switch buckle injection mold molding structure, which has the advantages of high utilization rate and low manufacturing cost.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a high-precision switch buckle injection mold molding structure, including a top plate, an upper mold, a lower mold, an ejector plate and a bottom plate, a cavity for molding a buckle body is opened between the upper mold and the lower mold, sliding grooves are opened on both side ends of the lower mold, side pull-out blocks are slidably arranged in the sliding grooves, and an inclined guide hole is opened on the side pull-out block. An inclined guide rod is fixedly arranged at the bottom of the upper mold. When the upper mold is separated from the lower mold, the inclined guide rod drives the side pull-out block to move, and a core pulling rod is arranged on the side pull-out block. The core pulling rod is used for forming the connecting holes on both sides of the buckle body. A core pulling hole is also opened between the upper mold and the lower mold, and the core pulling rod is slidably arranged in the core pulling hole.

[0005] Through the above technical means, through the cooperation between the inclined guide rod and the inclined guide hole, automatic core pulling is achieved when opening the mold, thereby reducing the manufacturing cost of the mold, and the connecting holes on both sides are core pulled by a core pulling rod, so that the core pulling of double-row cavities can be achieved through the side pulling blocks on both sides, thereby increasing the utilization rate of the mold.

[0006] Preferably, a mounting groove 1 is further provided on the lower mold, a convex block 1 is arranged in the mounting groove 1, the core-pulling hole passes through the convex block 1, and a groove 1 adapted to the convex block 1 is provided at the bottom of the upper mold.

[0007] Through the above technical means, by opening a core pulling hole in the protrusion one, when the upper mold and the lower mold are closed, the core pulling rod passes through the core pulling hole in the protrusion one, so that the sliding accuracy of the core pulling rod is increased, and at the same time, the closing accuracy is increased through the cooperation of the protrusion one and the groove one.

[0008] Preferably, a fixing ear is fixedly provided on one side end of the protrusion, and the fixing ear is fixedly connected to the lower mold by a screw.

[0009] Through the above technical means, the protrusion 1 and the lower mold are connected by the cooperation of the screws and the fixing ears, which makes it convenient to adjust and manufacture the protrusion 1 and to replace the worn protrusion 1.

[0010] Preferably, a groove 2 is provided in the middle of the convex block 1, a convex block 2 is provided in the middle of the groove 1, and a core-pulling hole is also provided on the convex block 2.

[0011] Through the above technical means, by opening a core pulling hole in the second protrusion, the upper mold and the lower mold can be locked by the core pulling rod when the upper mold and the lower mold are closed, so as to prevent the problem of glue edge of the product caused by excessive pressure in the mold.

[0012] Preferably, both side ends of the second protrusion are provided with an inclined guide surface 1, and both side ends of the second groove are provided with an inclined guide surface 2, and the inclined guide surface 1 is adapted to the inclined guide surface 2.

[0013] Through the above technical means, the mold clamping accuracy is increased through the cooperation between the inclined guide surface 1 and the inclined guide surface 2, and the collision between the protrusion 2 and the groove 2 is prevented.

[0014] Preferably, a detection block is fixedly provided on the lower die, and a core pulling hole is also penetrated through the detection block. A detection unit for detecting the straightness of the core pulling rod is also arranged in the detection block.

[0015] Through the above technical means, the straightness of the core pulling rod is detected by the detection unit, and the mold closing accuracy is further increased by the detection block.

[0016] Preferably, a positioning hole is provided on the side pull-out block, a through hole is provided at the bottom of the positioning hole, a countersunk hole is provided on the other side of the through hole, a threaded hole is provided at the tail of the core pulling rod, and the core pulling rod is installed in the positioning hole by screws.

[0017] Through the above technical means, the installation accuracy of the core pulling rod is increased through the positioning hole, thereby ensuring the sliding accuracy and molding accuracy of the core pulling rod, and the core pulling rod is installed by screws to facilitate the replacement of the core pulling rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a buckle body;

[0019] Figure 2It is a structural schematic diagram of an embodiment;

[0020] Figure 3 It is a partial schematic diagram of an embodiment;

[0021] Figure 4 for Figure 3 Schematic diagram of part A;

[0022] Figure 5 It is a structural schematic diagram of the upper die;

[0023] Figure 6 for Figure 5 Schematic diagram of part B;

[0024] Figure 7 is a cross-sectional schematic diagram of an embodiment;

[0025] Figure 8 for Figure 7 Schematic diagram of part C.

[0026] : 1. top plate; 2. upper die; 3. lower die; 4. ejector plate; 5. bottom plate; 6. cavity; 7. sliding groove; 8. pressure plate; 9. side pull-out block; 10. oblique guide hole; 11. oblique guide rod; 12. core pulling rod; 13. core pulling hole; 14. mounting groove one; 15. protrusion one; 16. groove one; 17. fixing ear; 18. groove two; 19. protrusion two; 20. oblique guide surface one; 21. oblique guide surface two; 22. positioning hole; 23. countersunk hole; 24. threaded hole; 25. detection block; 26. pressure sensor; 27. through hole; 90. buckle body; 91. connecting ear; 92. connecting hole. DETAILED DESCRIPTION

[0027] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0028] A high-precision switch buckle injection mold molding structure, including a top plate 1, an upper mold 2, a lower mold 3, an ejector plate 4 and a bottom plate 5, the ejector plate 4 is provided with a plurality of ejector rods, the ejector rods are used to eject the product, a cavity 6 for molding a buckle body 90 is opened between the upper mold 2 and the lower mold 3, sliding grooves 7 are opened on both sides of the lower mold 3, and a pressing plate 8 is arranged on both sides of the lower mold 3, a T-shaped groove is formed between the pressing plate 8 and the sliding groove 7, a side drawer block 9 is slidably arranged in the sliding groove 7, and an inclined guide hole is opened on the side drawer block 9 10. An inclined guide rod 11 is fixedly provided at the bottom of the upper mold 2. When the upper mold 2 is separated from the lower mold 3, the inclined guide rod 11 drives the side withdrawal block 9 to move. A core pulling rod 12 is provided on the side withdrawal block 9 in the direction toward the cavity 6. The core pulling rod 12 simultaneously forms the connecting holes 92 on both sides of the button body 90. A core pulling hole 13 is also opened between the upper mold 2 and the lower mold 3. The core pulling rod 12 is slidably set in the core pulling hole 13. When the upper mold 2 is separated from the lower mold 3, the core pulling rod 12 is automatically pulled out and completes the core pulling of the connecting hole 92.

[0029] The lower mold 3 is also provided with a mounting groove 14, which is arranged between the two connecting ears 91. A protrusion 15 is arranged in the mounting groove 14, and the core pulling hole 13 passes through the protrusion 15. A groove 16 adapted to the protrusion 15 is provided at the bottom of the upper mold 2. When the mold is closed, the protrusion 15 is inserted into the groove 16, thereby increasing the mold closing accuracy. At the same time, the core pulling rod 12 passes through the protrusion 15, thereby playing a certain supporting role for the core pulling rod 12, thereby increasing the rigidity and sliding accuracy of the core pulling rod 12.

[0030] A fixing ear 17 is fixedly provided on the side end of the protrusion 15, and the fixing ear 17 is fixedly connected to the lower mold 3 by screws, so as to facilitate the replacement of the worn protrusion 15. A groove 2 18 is provided in the middle of the protrusion 15, and a protrusion 2 19 is provided in the middle of the groove 16. Both side ends of the protrusion 2 19 are provided with an inclined guide surface 1 20, and both side ends of the groove 2 18 are provided with an inclined guide surface 21. The inclined guide surface 1 20 and the inclined guide surface 2 21 are adapted to each other. When the upper mold 2 and the lower mold 3 are molded together, the inclined guide surface 1 20 and the inclined guide surface 2 21 gradually fit together, thereby playing a role in increasing the mold clamping accuracy. The protrusion 2 19 is also provided with a core pulling hole 13. When the core pulling rod 12 passes through the core pulling holes 13 of the protrusion 2 19 and the protrusion 15 at the same time, the upper mold 2 and the lower mold 3 are locked, thereby preventing the problem of glue edge of the product caused by excessive pressure in the mold.

[0031] A positioning hole 22 is provided on the side pull-out block 9, a through hole 27 is provided at the bottom of the positioning hole 22, a countersunk hole 23 is provided on the other side of the through hole 27, and a threaded hole 24 is provided at the tail of the core pulling rod 12. When installing the core pulling rod 12, the core pulling rod 12 is first inserted into the positioning hole 22, and then the tail of the core pulling rod 12 is fixed in the positioning hole 22 by screws, thereby ensuring the sliding accuracy and molding accuracy of the core pulling rod 12, and facilitating the replacement of the core pulling rod 12.

[0032] A detection block 25 is also fixed on the lower mold 3, and a core pulling hole 13 is also penetrated through the detection block 25. A detection unit for detecting the straightness of the core pulling rod 12 is also arranged in the detection block 25. The detection unit is preferably a pressure sensor 26, which is arranged above the core pulling hole 13. When the core pulling rod 12 is deformed due to mold locking, when the side pulling block 9 pulls out the core pulling rod 12, the core pulling rod 12 generates a certain resistance force on the input end of the pressure sensor 26.

[0033] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A high-precision switch buckle injection mold molding structure, comprising a top plate (1), an upper mold (2), a lower mold (3), an ejector plate (4) and a bottom plate (5), characterized in that: A cavity (6) for molding a button body (90) is provided between the upper mold (2) and the lower mold (3), sliding grooves (7) are provided on both side ends of the lower mold (3), a side pull-out block (9) is slidably provided in the sliding groove (7), an inclined guide hole (10) is provided on the side pull-out block (9), an inclined guide rod (11) is fixedly provided at the bottom of the upper mold (2), and when the upper mold (2) and the lower mold (3) are separated, the inclined guide rod (11) drives the side pull-out block (9) to move, and a core pulling rod (12) is provided on the side pull-out block (9), and the core pulling rod (12) is used for molding the connecting holes (92) on both sides of the button body (90), and a core pulling hole (13) is also provided between the upper mold (2) and the lower mold (3), and the core pulling rod (12) is slidably provided in the core pulling hole (13).

2. The high-precision switch buckle injection mold molding structure according to claim 1 is characterized by: The lower mold (3) is also provided with a mounting groove (14), a convex block (15) is arranged in the mounting groove (14), the core-pulling hole (13) passes through the convex block (15), and the bottom of the upper mold (2) is provided with a groove (16) adapted to the convex block (15).

3. The high-precision switch buckle injection mold molding structure according to claim 2 is characterized by: A fixing ear (17) is fixedly provided on the side end of the first protrusion (15), and the fixing ear (17) is fixedly connected to the lower mold (3) by means of screws.

4. The high-precision switch buckle injection mold molding structure according to claim 2 is characterized by: A second groove (18) is provided in the middle of the first convex block (15), a second convex block (19) is provided in the middle of the first groove (16), and a core-pulling hole (13) is also provided on the second convex block (19).

5. The high-precision switch buckle injection mold molding structure according to claim 4 is characterized in that: The two side ends of the second protrusion (19) are both provided with an inclined guide surface (20), and the two side ends of the second groove (18) are both provided with an inclined guide surface (21), and the inclined guide surface (20) and the inclined guide surface (21) are adapted to each other.

6. The high-precision switch buckle injection mold molding structure according to claim 1 is characterized by: A detection block (25) is also fixedly provided on the lower die (3), and a core pulling hole (13) is also penetrated through the detection block (25). A detection unit for detecting the straightness of the core pulling rod (12) is also arranged inside the detection block (25).

7. The high-precision switch buckle injection mold molding structure according to claim 1 is characterized by: The side pull-out block (9) is provided with a positioning hole (22), a through hole (27) is provided at the bottom of the positioning hole (22), a countersunk hole (23) is provided on the other side of the through hole (27), a threaded hole (24) is provided at the tail of the core pulling rod (12), and the core pulling rod (12) is installed in the positioning hole (22) by means of screws.

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