High-precision injection mold for switch

Abstract

The utility model provides a switch high-precision injection mold, which comprises a top plate, an upper mold, a lower mold, ejector plates and a bottom plate, a runner cavity and a forming cavity are formed in the upper mold and the lower mold, an inclined ejector block is embedded on the lower mold, an inclined ejector rod is arranged at the bottom of the inclined ejector block, the ejector plates comprise an ejector plate I and an ejector plate II, a sliding block is fixedly arranged on the ejector plate II, and a sliding block is arranged on the sliding block. The sliding block is exposed out of the first ejector plate, a T-shaped sliding way is formed in the top of the sliding block, a T-shaped sliding block is arranged at the tail of the inclined ejector rod, the T-shaped sliding block is in sliding fit with the T-shaped sliding way, the inclined ejector block is used for forming a connecting hole and the outer side of a connecting lug, and a mold locking assembly is further arranged on the upper mold. The inclined ejector block moves in the inclined direction, the inverted buckle at the connecting hole is gradually disengaged, ejection and core pulling are completed, the locking force between the upper die and the lower die is increased through the die locking assembly, and therefore burrs are reduced.

Description

Technical Field

[0001] The utility model relates to a mould, in particular to a high-precision injection mould for a switch. Background Art

[0002] like Figure 1 As shown, a switch button includes a switch body 90 and a connecting ear 91 arranged on the back of the switch body 90 . The surface of the switch body 90 is provided with anti-slip grooves 93 , and the connecting ear 91 is provided with a connecting hole 92 .

[0003] The switch button is usually formed by injection molding, and a cylinder core pulling process is usually required when forming the connecting hole 92. However, the switch button is relatively small in size, and a one-out-many form is used for injection molding. In order to avoid interference during cylinder core pulling, a more complex arrangement of the mold cavity is required, which makes the mold manufacturing process more complicated and the manufacturing cost higher. Utility Model Content

[0004] In view of this, the utility model aims to provide a high-precision injection mold for a switch, which has the advantage of low production cost.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a high-precision injection mold for a switch, comprising a top plate, an upper mold, a lower mold, an ejector plate and a bottom plate, wherein a runner cavity and a molding cavity are formed in the upper mold and the lower mold, an inclined ejector block is also embedded in the lower mold, and an inclined ejector rod is also arranged at the bottom of the inclined ejector block, the ejector plate comprises an ejector plate 1 and an ejector plate 2, a sliding block is fixedly arranged on the ejector plate 2, the sliding block is exposed from the ejector plate 1, a T-shaped slideway is opened on the top, a T-shaped slider is arranged at the tail of the inclined ejector rod, the T-shaped slider slides with the T-shaped slideway, a straight ejector rod 1 is also fixedly arranged on the sliding block, the straight ejector rod 1 passes through the lower mold and extends into the molding cavity, the inclined ejector block is used to form the connecting hole and the outer side of the connecting ear, and a locking assembly is also arranged on the upper mold.

[0006] Through the above technical means, through the cooperation between the T-shaped slide and the T-shaped slider, when the ejection plate 2 is ejected, the inclined ejector block moves in the inclined direction, so that the undercut at the connecting hole is gradually disengaged, and the straight ejector rod 1 is cooperated to complete the ejection and core pulling, so that the process is simple and the cost is low when manufacturing the mold, and the locking force between the upper mold and the lower mold is increased by the locking mold assembly, thereby reducing the generation of burrs.

[0007] Preferably, the upper mold includes a base mold 1 and a mold core 1, and the base mold 1 and the mold core 1 are fixed by screws. The lower mold includes a base mold 2 and a mold core 2, and the base mold 2 and the mold core 2 are fixed by screws.

[0008] Through the above technical means, mold core 1 and mold core 2 are manufactured separately from substrate 1 and substrate 2, thereby reducing the difficulty of production and facilitating subsequent mold repair and mold replacement.

[0009] Preferably, the ejection plate 1 is further provided with a straight ejector rod 2, the straight ejector rod 2 passes through the lower mold and extends into the runner cavity, and the straight ejector rod 2 is used to eject the runner glue outlet.

[0010] Through the above technical means, the runner glue outlet is pressed by the second straight push rod, so as to prevent the runner glue outlet and the lower mold from sticking to each other, resulting in a break between the switch body and the runner glue outlet, thereby affecting the appearance of the switch body.

[0011] Preferably, an annular groove is provided on the upper die, a forming die head is arranged in the annular groove, a spring is arranged between the forming die head and the bottom of the annular groove, and a limiting screw 1 is also provided on the upper die, and the limiting screw 1 limits the ejection distance of the forming die head.

[0012] Through the above-mentioned technical means, by setting a molding die in the annular groove and setting a spring at the bottom of the molding die, the molding die will still be pressed on the switch body when the upper mold and the lower mold are opened, and the ejection distance of the molding die is limited by a limit screw, so that after the upper mold moves a certain stroke, the molding die is driven to move together and separate from the switch body.

[0013] Preferably, a reset rod is vertically arranged on the ejection plate, a guide hole is penetrated through the lower mold, and the reset rod extends into the guide hole and slidably cooperates with the guide hole.

[0014] By means of the above technical means, the movement accuracy of the ejector plate 1 during ejection is increased through the cooperation between the reset rod and the guide hole, and the ejector plate 1 is automatically reset downward during mold closing.

[0015] Preferably, a countersunk hole is further provided on the lower die, a self-lubricating sleeve is provided on the outer side of the reset rod, the self-lubricating sleeve is arranged in the countersunk hole, and a limiting screw 2 for fixing the self-lubricating sleeve is also provided at the bottom of the lower die.

[0016] By means of the above technical means, the friction of the reset rod is reduced by the self-lubricating sleeve, thereby increasing the service life of the reset rod.

[0017] Preferably, the mold locking assembly includes an oil cylinder embedded in the upper mold, the output end of the oil cylinder is provided with a butt head, the top end of the reset rod is provided with a chuck, and when the butt head is pressed into the bottom side of the chuck, the upper mold and the lower mold are locked.

[0018] Through the above technical means, the cylinder drives the butt head to press against the bottom side of the chuck, so that the upper mold and the lower mold are locked, increasing the locking force when the upper mold and the lower mold are closed, and preventing the problem of burrs on the switch body caused by excessive pressure in the molding cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of the switch body;

[0020] Figure 2 It is a structural schematic diagram of an embodiment;

[0021] Figure 3 is a cross-sectional schematic diagram of an embodiment;

[0022] Figure 4 for Figure 3 Schematic diagram of part A;

[0023] Figure 5 It is a partial schematic diagram of an embodiment.

[0024] 1. The mold of the embodiment of the present invention is as follows: 1. ejector plate; 2. upper mold; 3. lower mold; 5. bottom plate; 6. base mold 1; 7. mold core 1; 8. base mold 2; 9. mold core 2; 10. flow channel cavity; 11. molding cavity; 12. inclined ejector block; 13. inclined ejector rod; 14. ejector plate 1; 15. ejector plate 2; 16. sliding block; 17. T-shaped slideway; 18. T-shaped slide block; 19. straight ejector rod 1; 20. straight ejector rod 2; 21. annular groove; 22. molding die head; 23. spring; 24. limit screw 1; 25. limit groove; 26. reset rod; 27. guide hole; 28. countersunk hole; 29. ​​self-lubricating sleeve; 30. oil cylinder 1; 31. reverse block; 32. butt; 33. chuck; 90. switch body; 91. connecting ear; 92. connecting hole; 93. anti-slip pattern. DETAILED DESCRIPTION

[0025] 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.

[0026] A high-precision injection mold for a switch comprises a top plate 1, an upper mold 2, a lower mold 3, an ejector plate and a bottom plate 5. The upper mold 2 comprises a base mold 1 6 and a core mold 1 7, which are fixed by screws. The lower mold 3 comprises a base mold 2 8 and a core mold 2 9, which are fixed by screws. After the core mold 1 7 is fitted with the core mold 2 9, a flow channel cavity 10 and a molding cavity 11 are formed inside. An inclined ejector block 12 is also embedded in the lower mold 3, and an inclined ejector rod 13 is also provided at the bottom of the inclined ejector block 12. The ejector plate comprises an ejector plate 14 and an ejector plate 2 15, and a sliding block 16 is fixed on the ejector plate 2 15, and the sliding block 16 is exposed from the ejector plate 14, and a T-shaped slideway 17 is provided on the top thereof. A T-shaped slider 18 is provided at the tail of the inclined ejector rod 13, and the T-shaped slider 18 slides with the T-shaped slideway 17.

[0027] A straight ejector rod 19 is also fixedly provided on the sliding block 16. The straight ejector rod 19 passes through the lower mold 3 and extends into the molding cavity 11. The inclined ejector block 12 is used to mold the outer side of the connecting hole 92 and the connecting ear 91. A straight ejector rod 20 is also provided on the ejection plate 14. The straight ejector rod 20 passes through the lower mold 3 and extends into the runner cavity 10. The straight ejector rod 20 is used to eject the runner glue port. When the upper mold 2 is separated from the lower mold 3, the ejection plate 14 and the ejection plate 2 15 move upward together. At this time, the inclined ejector rod 13 slides along the T-shaped slideway 17 while being fixed upward, so that the inclined ejector block 12 is tilted and ejected. At the same time, the straight ejector rod 19 is ejected vertically upward. After ejecting a distance at one end, the ejection plate 2 15 stops moving, and the ejection plate 14 continues to move. At this time, the straight ejector rod 20 continues to eject, and the inclined ejector rod 13 and the straight ejector rod 19 stop ejecting until demolding.

[0028] An annular groove 21 is provided on the upper mold 2, and a molding die head 22 is arranged in the annular groove 21. The molding die head 22 is annular and has a molding groove for molding the upper end surface of the switch body 90. A spring 23 is arranged between the tail of the molding die head 22 and the bottom of the annular groove 21. A limiting screw 24 is also provided on the upper mold 2. A limiting groove 25 is provided on the side end of the molding die head 22. The limiting screw 24 cooperates with the limiting groove 25 to limit the ejection distance of the molding die head 22. When the upper mold 2 is separated from the lower mold 3, the molding die head 22 will still be pressed on the switch body 90. When the upper mold 2 is gradually separated, the limiting screw 24 and the limiting groove 25 slide. When the limiting screw 24 presses against the bottom side of the limiting groove 25, the upper mold 2 drives the molding die head 22 to move together and separate from the switch body 90.

[0029] A reset rod 26 is also vertically arranged on the ejection plate 14, and a guide hole 27 is penetrated on the lower mold 3. The reset rod 26 extends into the guide hole 27 and slides therewith. A countersunk hole 28 is also arranged at one end of the guide hole 27. A self-lubricating sleeve 29 is sleeved on the outer side of the reset rod 26, and the self-lubricating sleeve 29 is arranged in the countersunk hole 28. A limiting screw 2 for fixing the self-lubricating sleeve 29 is also arranged at the bottom of the lower mold 3. The friction of the reset rod 26 is reduced by the self-lubricating sleeve 29, thereby increasing the service life of the reset rod 26.

[0030] A locking assembly is also provided on the upper mold 2, and the locking assembly includes an oil cylinder 30 embedded in the upper mold 2. A reverse block 31 is provided at the output end of the oil cylinder 30. The reverse block 31 is U-shaped, and a butt 32 is provided at the other end of the reverse block 31. A chuck 33 is provided at the top of the reset rod 26. The bottom of the chuck 33 and the top of the butt 32 are both provided with inclined surfaces. When the butt 32 is pressed into the bottom side of the chuck 33, the upper mold 2 and the lower mold 3 are locked. The oil cylinder can be set in the upper mold 2 through the reverse block 31 to increase the compactness of the entire mold. The locking force when the upper mold 2 and the lower mold 3 are closed is increased through the oil cylinder 30 to prevent the problem of burrs on the switch body 90 caused by excessive pressure in the molding cavity 11.

[0031] 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 injection mold for a switch, comprising a top plate (1), an upper mold (2), a lower mold (3), an ejector plate and a bottom plate (5), wherein: A flow channel cavity (10) and a molding cavity (11) are formed in the upper mold (2) and the lower mold (3); an inclined ejector block (12) is also embedded in the lower mold (3); an inclined ejector rod (13) is also provided at the bottom of the inclined ejector block (12); the ejector plate comprises an ejector plate 1 (14) and an ejector plate 2 (15); a sliding block (16) is fixedly provided on the ejector plate 2 (15); the sliding block (16) is exposed from the ejector plate 1 (14), and a T-shaped slideway (16) is provided on the top of the sliding block (16). 17), a T-shaped slider (18) is provided at the tail of the inclined ejector rod (13), and the T-shaped slider (18) is slidably matched with the T-shaped slideway (17), the inclined ejector block (12) is used to form the outer side of the connecting hole (92) and the connecting ear (91), and a straight ejector rod (19) is also fixedly provided on the sliding block (16), and the straight ejector rod (19) passes through the lower mold (3) and extends into the molding cavity (11), and a locking mold assembly is also provided on the upper mold (2).

2. A switch high-precision injection mold according to claim 1, characterized in that: The upper mold (2) comprises a base mold 1 (6) and a mold core 1 (7), wherein the base mold 1 (6) and the mold core 1 (7) are fixed by screws, and the lower mold (3) comprises a base mold 2 (8) and a mold core 2 (9), wherein the base mold 2 (8) and the mold core 2 (9) are fixed by screws.

3. The high-precision injection mold for a switch according to claim 1, characterized in that: The ejection plate 1 (14) is also provided with a straight ejector rod 2 (20), which passes through the lower mold (3) and extends into the runner cavity (10), and is used to eject the runner glue outlet.

4. The high-precision injection mold for a switch according to claim 1, characterized in that: The upper die (2) is provided with an annular groove (21), a forming die head (22) is arranged in the annular groove (21), a spring (23) is arranged between the forming die head (22) and the bottom of the annular groove (21), and a limiting screw (24) is also arranged on the upper die (2), and the limiting screw (24) limits the ejection distance of the forming die head (22).

5. The high-precision injection mold for a switch according to claim 1, characterized in that: A reset rod (26) is also vertically arranged on the ejection plate (14), and a guide hole (27) is penetrated through the lower mold (3), and the reset rod (26) extends into the guide hole (27) and slides with it.

6. A switch high-precision injection mold according to claim 5, characterized in that: The lower die (3) is also provided with a countersunk hole (28), the outer side of the reset rod (26) is sleeved with a self-lubricating sleeve (29), the self-lubricating sleeve (29) is arranged in the countersunk hole (28), and the bottom of the lower die (3) is also provided with a second limit screw for fixing the self-lubricating sleeve (29).

7. According to claim 5, a switch high-precision injection mold, characterized in that: The mold locking assembly comprises an oil cylinder (30) embedded in the upper mold (2), an abutment head (32) is provided at the output end of the oil cylinder, a chuck (33) is provided at the top end of the reset rod (26), and when the abutment head (32) is pressed against the bottom side of the chuck (33), the upper mold (2) and the lower mold (3) are locked.

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