A top-slide release injection mold

Abstract

The present invention provides a top sliding release injection mold, comprising a top plate, an upper mold, a lower mold, an ejection plate 1, an ejection plate 2 and a bottom plate arranged in sequence, a cavity for forming a guard plate body is formed between the upper mold and the lower mold, a bent pin core pulling assembly for ejecting the undercut 1 is provided at the side end of the lower mold, the bent pin core pulling assembly comprises a core pulling block 1 and a bent hook rod, a driving groove is provided in the core pulling block 1, an inclined top surface 1 is also provided in the driving groove, the bent hook rod cooperates with the inclined top surface 1 and drives the core pulling block 1 to move laterally, the bent hook rod is fixed to the ejection plate 1, a spring core pulling assembly and an inverted hook core pulling assembly are also provided in the core pulling block 1, and an ejection core pulling assembly is also provided in the lower mold, the ejection of the undercut 1 is completed by the inclined cooperation between the bent hook rod and the inclined top surface 1, the ejection of the undercut 1 is achieved by the spring core pulling assembly and the inverted hook core pulling assembly, and the ejection of the undercut 4 and the undercut 5 is achieved by the ejection core pulling assembly.

Description

Technical Field

[0001] The invention relates to a mold, in particular to a top-slip release injection mold. Background Art

[0002] like Figure 1 As shown, a lower guard plate of an instrument panel includes a guard plate body 90, a mounting clip plate 91 is provided at the bottom thereof, and the mounting clip plate 91 has a certain inclination, thereby forming an inverted buckle 1 with the edge of the guard plate body 90 that cannot be directly detached, and a through groove 92 and a through hole 93 are also provided on the mounting clip plate 91, and the back sides of the through groove 92 and the through hole 93 are respectively provided with an extension plate 94 for fixing and an extension plate column 95 for tapping, and the through groove 92, the through hole 93, the extension plate 94 and the extension column 95 respectively form an inverted buckle 2, an inverted buckle 3, an inverted buckle 4 and an inverted buckle 5.

[0003] The above-mentioned guard plate body has many undercuts, and the undercut angles are different. Normal molds cannot complete the removal, and the structure of the guard plate body needs to be modified. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide a top-sliding release injection mold, which can enable the guard plate body to be released.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a top sliding release injection mold, comprising a top plate, an upper mold, a lower mold, an ejection plate 1, an ejection plate 2 and a bottom plate arranged in sequence, a cavity for forming a guard plate body is formed between the upper mold and the lower mold, and a bent pin core pulling assembly for ejecting the undercut 1 is provided at the side end of the lower mold, the bent pin core pulling assembly comprises a core pulling block 1 and a bent hook rod, a driving groove is provided in the core pulling block 1, and an inclined top surface 1 is also provided in the driving groove, the bent hook rod cooperates with the inclined top surface 1 and drives the core pulling block 1 to move horizontally, the bent hook rod is fixed to the ejection plate 1, and a spring core pulling assembly for ejecting the undercut 2 and an inverted hook core pulling assembly for ejecting the undercut 3 are also provided in the core pulling block 1, and an ejection core pulling assembly for ejecting the undercut 4 and the undercut 5 is also provided in the lower mold.

[0006] Through the above technical means, through the inclined cooperation between the bent hook rod and the inclined top surface 1, the core pulling block 1 is driven to move outward when the ejection plate is ejected, thereby achieving the purpose of core pulling and completing the ejection of the inverted buckle 1. By setting the spring core pulling assembly and the inverted hook core pulling assembly, the ejection of the inverted buckle 2 and the inverted buckle 3 is achieved, and the ejection of the inverted buckle 4 and the inverted buckle 5 is achieved through the ejection core pulling assembly.

[0007] Preferably, an inclined groove 1 is further provided on the core pulling block 1, and the spring core pulling assembly includes a core pulling block 2, a reset block, a driving spring 1 and a limit screw. The core pulling block 2 is slidably arranged in the inclined groove 1, the reset block is arranged at the bottom of the upper mold and limits the position of the core pulling block 2, the driving spring 1 is arranged between the core pulling block 1 and the core pulling block 2 and drives the core pulling block 2 to move out of the inclined groove 1, and the limit screw is fixed to the core pulling block 1 and limits the moving stroke of the core pulling block 2.

[0008] Through the above technical means, the upper mold and the lower mold are separated, so that the reset block is separated from the core pulling block 2, and the core pulling block 2 is ejected by driving spring 1, so that the automatic core pulling of the inverted groove 2 is completed by driving spring 1 when the mold is opened, and the moving distance of the core pulling block 2 is limited by setting a limit screw, thereby preventing the core pulling block 2 from escaping from the chute 1.

[0009] Preferably, an inclined hole 1 is further provided on the core pulling block 1, and the inverted hook core pulling assembly includes a core pulling block 3, a piston tube and an air flow channel. The core pulling block 3 is slidingly arranged in the piston tube, and the air flow channel is arranged in the core pulling block 1 and is connected to the tail end of the piston tube. A sealing plug is provided at the tail end of the core pulling block 3, and the core pulling block 3 is moved by the air pressure in the piston tube.

[0010] Through the above technical means, through the cooperation between the core pulling block four and the piston tube, the air pressure in the piston tube is changed to drive the core pulling block four to move, thereby completing the core pulling action in a smaller space.

[0011] Preferably, the ejection core pulling assembly includes an ejection block, a power rod, a core pulling block four and a core pulling block five. A ejector rod is provided at the bottom of the ejection block, the ejector rod is fixed to the ejection plate one, the power rod is fixed on the ejection plate two, the core pulling block four is used to form the top position of the extension plate, the core pulling block five is used to form the top position of the extension column, and the power rod is used to drive the core pulling block four and the core pulling block five to move and complete the removal of the undercut four and the undercut five.

[0012] Through the above technical means, when the mold is opened, the core pulling block four and the core pulling block five are driven to be ejected together by the ejection block. After the ejection is completed, the power rod drives the core pulling block four and the core pulling block five to move, thereby completing the removal of the undercut four and the undercut five. Compared with completing the core pulling before ejection, performing the core pulling after ejection can prevent the core pulling block one from wrapping a larger surface during the core pulling process, thereby preventing the gusset plate from being deformed and bent, thereby increasing the yield rate of the product.

[0013] Preferably, a sliding cavity is provided on the ejection block, and the core pulling block four slides in cooperation with the sliding cavity. An inclined hole two is also provided in the core pulling block four. The top of the power rod passes through the ejection block and is bent to form a power inclined rod. The power inclined rod slides in cooperation with the inclined hole two. A T-shaped slide rail one is also provided at the bottom of the sliding cavity, and a T-shaped slider one is provided at the bottom of the core pulling block four and slides in cooperation with the T-shaped slide rail one.

[0014] Through the above technical means, through the cooperation between the inclined hole 2 and the power inclined rod, the core pulling of the core pulling block 4 is completed by driving the power rod to move through the ejection plate 2 after the product is ejected, and the cooperation between the T-shaped slide rail 1 and the T-shaped slider 1 is set to prevent the core pulling block 4 from escaping from the sliding cavity.

[0015] Preferably, a T-shaped slide rail 2 is further provided at the bottom of the ejection block, a T-shaped slider 2 is provided on the core pulling block 5, the T-shaped slider 2 slides and cooperates with the T-shaped slide rail 2, a T-shaped slide rail 3 is provided on the core pulling block 5, and a driving plate is also fixedly provided on the ejector rod, and a T-shaped slider 3 is also provided at the end of the driving plate, the T-shaped slider 3 slides and cooperates with the T-shaped slide rail 3, and when the power rod moves upward, the driving plate drives the core pulling block 5 to move along the direction of the T-shaped slide rail 2.

[0016] Through the above technical means, through the cooperation between T-shaped slider 2 and T-shaped slide rail 2, T-shaped slider 3 and T-shaped slide rail 3, and at the same time through the angle difference between T-shaped slide rail 2 and T-shaped slide rail 3, the power rod drives the core pulling block 5 to move along the moving T-shaped slide rail 2 while driving the core pulling block 4.

[0017] Preferably, a backing plate is further provided on the core pulling block 5, and the backing plate cooperates with the spring core pulling assembly to form a through groove.

[0018] Through the above technical means, the contact area between the spring core pulling assembly and the product is reduced by cooperating with the abutment plate and the spring core pulling assembly, thereby preventing the problem of being unable to be pulled out due to over-tight wrapping. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0021] Figure 3 for Figure 2 Schematic diagram of part A;

[0022] Figure 4 is a schematic cross-sectional view of an embodiment;

[0023] Figure 5 A partial cross-sectional view of an embodiment Figure 1 ;

[0024] Figure 6 A partial cross-sectional view of an embodiment Figure 2 ;

[0025] Figure 7 for Figure 4 Schematic diagram of part B;

[0026] Figure 8 It is a structural diagram of the core pulling block 2.

[0027] Figure numerals: 1, top plate; 2, upper die; 3, lower die; 4, ejector plate 1; 5, bottom plate; 6, cavity; 7, bent pin core pulling assembly; 8, core pulling block 1; 9, bent hook rod; 10, driving groove; 11, inclined top surface 1; 12, pressure block; 13, limit block; 14, spring core pulling assembly; 15, inverted hook core pulling assembly; 16, inclined groove 1; 17, core pulling block 2; 18, reset block; 19, driving spring 1; 20, limit screw; 21, inclined hole 1; 22, core pulling block 3; 23, ejector plate 2; 24, plug tube; 25, air flow channel; 26, Sealing plug; 27. Ejector block; 28. Power rod; 29. ​​Core pulling block 4; 30. Core pulling block 5; 31. Ejector rod; 32. Square through groove; 33. Sliding cavity; 34. Inclined hole 2; 35. Power inclined rod; 36. T-shaped slide rail 1; 37. T-shaped slider 1; 38. T-shaped slide rail 2; 39. T-shaped slider 2; 40. T-shaped slide rail 3; 41. T-shaped slider 3; 42. Drive plate; 43. Abutment plate; 44. Ejector core pulling assembly; 45. Abutment groove; 91. Buckle plate; 92. Through groove; 93. Through hole; 94. Extension plate; 95. Extension column. DETAILED DESCRIPTION

[0028] The specific embodiments 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.

[0029] A top sliding release injection mold, comprising a top plate 1, an upper mold 2, a lower mold 3, an ejector plate 4, an ejector plate 23 and a bottom plate 5 arranged in sequence, a cavity 6 for forming a guard plate body is formed between the upper mold 2 and the lower mold 3, a bent pin core pulling assembly 7 for ejecting an undercut is provided at the side end of the lower mold 3, the bent pin core pulling assembly 7 comprises a core pulling block 8 and a hook rod 9, a driving groove 10 is provided in the core pulling block 8, an inclined top surface 11 is further provided in the driving groove 10, the hook rod 9 cooperates with the inclined top surface 11 and drives the core pulling block 8 to move laterally, the bottom of the core pulling block 8 is T-shaped, a sliding groove is provided on the lower mold 3 and a pressure block 12 is provided. The sliding groove and the pressure block 12 form a T-shaped groove and are adapted to the bottom of the core pulling block 8. A limit block 13 is also provided at the side end of the lower mold 3 to limit the moving stroke of the core pulling block 8. The bottom of the hook rod 9 is fixed to the ejection plate. When the ejection plate is ejected, the guard plate body moves upward, and the core pulling block 8 moves outward due to the inclined fit between the hook rod 9 and the inclined top surface 11, thereby achieving the purpose of core pulling. A spring core pulling assembly 14 for disengaging the undercut two and an inverted hook core pulling assembly 15 for disengaging the undercut three are also provided in the core pulling block 8. An ejection core pulling assembly 44 for disengaging the undercut four and the undercut five is also provided in the lower mold 3.

[0030] The core pulling block 8 is also provided with an inclined groove 16. The spring core pulling assembly 14 includes a core pulling block 17, a reset block 18, a driving spring 19 and a limit screw 20. The core pulling block 17 is slidably arranged in the inclined groove 16. The reset block 18 is arranged at the bottom of the upper mold 2 and limits the position of the core pulling block 17. The driving spring 19 is arranged between the core pulling block 8 and the core pulling block 17 and drives the core pulling block 17 to move out of the inclined groove 16. The limit screw 20 is fixed to the core pulling block 8 and limits the moving stroke of the core pulling block 17. When The upper mold 2 is separated from the lower mold 3, and the lower end face of the reset block 18 is separated from the upper end face of the core pulling block 2 17. At this time, the elastic energy storage of the driving spring 19 is released, and the core pulling block 2 17 is ejected, thereby completing the automatic core pulling of the inverted second when the mold is opened. The moving distance of the core pulling block 2 17 is limited by setting the limit screw 20, thereby preventing the core pulling block 2 17 from escaping from the inclined groove 16. When the upper mold 2 and the lower mold 3 are closed, the reset block 18 presses against the core pulling block 2 17 and presses it down. At this time, the driving spring 19 is compressed and generates elastic energy.

[0031] An inclined hole 34 is also provided on the core pulling block 8. The inverted hook core pulling assembly 15 includes a core pulling block 3 22, a piston tube 24 and an air flow channel 25. The core pulling block 3 22 is slidably arranged in the piston tube 24. The air flow channel 25 is arranged in the core pulling block 8 and is connected to the tail end of the piston tube 24. The other end of the air flow channel 25 is connected to the air pump through an air pipe. A sealing plug 26 is provided at the tail end of the core pulling block 3 22. The core pulling block 3 22 is moved by the air pressure in the piston tube 24. When the product is formed, the pressure in the air flow channel 25 is changed by the air pump to complete the core pulling action.

[0032] The ejector core-pulling assembly 44 includes an ejector block 27, a power rod 28, a core-pulling block 4 29 and a core-pulling block 5 30. Two ejector rods 31 are provided at the bottom of the ejector block 27 and are provided on both sides of the power rod 28. A square through groove 32 is provided in the lower mold 3 to provide installation space for the ejector rod 31 and the power rod 28. The ejector rod 31 is fixed to the ejector plate 1 4, and the power rod 28 is fixed on the ejector plate 23. The core-pulling block 4 29 is used to form the top position of the extension plate 94, and the core-pulling block 5 30 is used to form the top position of the extension column 95. The power rod 28 is used to drive the core-pulling block 4 29 and the core-pulling block 5 30 to move and complete the removal of the undercut 4 and the undercut 5. After the mold is opened, The ejection block 27, the power rod 28, the core pulling block 4 29 and the core pulling block 5 30 are all ejected along with the product. After the ejection is completed, the power rod 28 drives the core pulling block 4 29 and the core pulling block 5 30 to pull the core. Compared with using the oil cylinder to pull the core before ejection, pulling the core after ejection can prevent the core pulling block 1 8 from having a larger wrapping surface during the core pulling process, which may cause the buckle plate 91 to be deformed and bent, thereby increasing the yield rate of the product. By setting the ejection block 27 to press against the extension column 95 of the buckle plate 91, compared with using the inclined ejection to make the core pulling block 4 29 and the core pulling block 5 30 disengage, the core pulling block 4 29 and the core pulling block 5 30 can be prevented from bending the buckle plate 91 when being ejected.

[0033] A sliding cavity 33 is provided on the ejection block 27, and the core pulling block 29 slides with the sliding cavity 33. An inclined hole 24 is also provided in the core pulling block 29. The top of the power rod 28 passes through the ejection block 27 and is bent with a power inclined rod 35. The power inclined rod 35 slides with the inclined hole 24. A T-shaped slide rail 1 36 is also provided at the bottom of the sliding cavity 33. A T-shaped slider 1 37 is provided at the bottom of the core pulling block 29 and slides with the T-shaped slide rail 1 36. When the ejection plate 1 4 drives the power rod 28 to move upward, the power inclined rod 35 slides in the inclined hole 24 and drives the core pulling block 4 29 to enter the sliding cavity 33 along the T-shaped slide rail 1, thereby achieving the purpose of core pulling. The core pulling block 4 29 is prevented from leaving the sliding cavity 33 by setting the cooperation of the T-shaped slide rail 1 36 and the T-shaped slider 1 37.

[0034] The bottom of the ejector block 27 is also provided with a T-shaped slide rail 2 38, and the core pulling block 5 is provided with a T-shaped slider 2 39. The T-shaped slider 2 39 slides with the T-shaped slide rail 2 38. The core pulling block 5 30 is provided with a T-shaped slide rail 3 40. The ejector rod 31 is also fixed with a drive plate 42. The bottom side of the drive plate 42 is provided with a rib to ensure the structural strength of the drive plate 42. The end of the drive plate 42 is also provided with a T-shaped slider 3 41. The T-shaped slider 3 41 slides with the T-shaped slide rail 3 40. When the power rod 28 moves upward, the drive plate 42 drives the core pulling block 5 30 along the T-shaped slide rail 2 38. Because the moving direction of the core pulling block five 30 can only be tilted downward, and the power source cannot be set in the force application direction, the core pulling block five 30 is pulled out along the direction of the T-shaped slide rail two through the angle difference between the T-shaped slide rail two 38 and the T-shaped slide rail three 40, and the force generated by the upward movement of the drive plate 42, which solves the problem of difficulty in applying force to the core pulling block five 30, so that the power rod 28 drives the core pulling block five 30 to move along the moving T-shaped slide rail two 38 while driving the core pulling block four 29, thereby achieving the purpose of one push rod 31 driving the two core pulling blocks to move, making the mold accessories more compact.

[0035] A counter plate 43 is also provided on the core pulling block 5 30, and a counter groove 45 cooperating with the counter plate 43 is provided on the core pulling block 2 17. The counter plate 43 and the core pulling block 2 17 cooperate to form a through groove 92. The bottom plate 5 is provided at the lower end of the core pulling block 2 17, thereby reducing the contact area between the core pulling block 2 17 and the product, preventing the core pulling block 2 17 from being unable to be pulled out due to being wrapped too tightly. When the core pulling block 5 30 is removed, the counter plate 43 is driven out of the through groove 92, thereby moving the counter plate 43 out of the ejection path of the product.

[0036] The following is the product demoulding process: the mold is opened directly after the product is formed, and the air pump is started at the same time to make the air flow channel 25 negative pressure to pull back the core pulling block 3 22. At this time, the reset block 18 of the upper mold 2 moves upward with the upper mold 2 and separates from the core pulling block 2 17. The driving spring 19 at the side end of the core pulling block 2 17 releases the elastic potential energy and bounces the core pulling block 2 17, and then drives the ejector plate 1 4 and the ejector plate 2 23 to move upward. During the movement, the hook rod 9 follows and moves upward, and drives the core pulling Block 18 moves horizontally, and moving the core-pulling block 18 while ejecting can make the core-pulling block 18 tilt and escape from the undercut position. At the same time, the ejection block 27, the power rod 28, the core-pulling block 4 29, the core-pulling block 5 30 and other ejector rods 31 used to eject the product all move upward. After ejecting to a certain height, the ejection plate 14 stops moving, and the ejection plate 23 continues to move upward. The core-pulling block 4 29 and the core-pulling block 5 30 can be pulled out to complete the removal of all the undercuts, and then the product can be ejected.

[0037] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A top-slip release injection mold, comprising a top plate (1), an upper mold (2), a lower mold (3), an ejection plate (4), an ejection plate (23) and a bottom plate (5) arranged in sequence, wherein a cavity (6) for molding a guard plate body is formed between the upper mold (2) and the lower mold (3), and the mold is characterized by: The side end of the lower mold (3) is provided with a bent pin core pulling assembly (7) for dislodging the undercut one, the bent pin core pulling assembly (7) includes a core pulling block (8) and a bent hook rod (9), a driving groove (10) is provided in the core pulling block (8), an inclined top surface (11) is also provided in the driving groove (10), the bent hook rod (9) cooperates with the inclined top surface (11) and drives the core pulling block (8) to move laterally, the bent hook rod (9) is fixed to the ejection plate (4), the core pulling block (8) is also provided with a spring core pulling assembly (14) for dislodging the undercut two and an undercut core pulling assembly (15) for dislodging the undercut three, and the lower mold (3) is also provided with an ejection core pulling assembly (44) for dislodging the undercut four and the undercut five; The ejection core pulling assembly (44) includes an ejection block (27), a power rod (28), a core pulling block four (29) and a core pulling block five (30), a ejection block (27) is provided with an ejector rod (31) at the bottom, the ejector rod (31) is fixed to the ejection plate one (4), the power rod (28) is fixedly provided on the ejection plate two (23), the core pulling block four (29) is used to form the top position of the extension plate (94), the core pulling block five (30) is used to form the top position of the extension column (95), and the power rod (28) is used to drive the core pulling block four (29) and the core pulling block five (30) to move and complete the ejection of the undercut four and the undercut five; The ejection block (27) is provided with a sliding cavity (33), the core pulling block four (29) is slidingly matched with the sliding cavity (33), and the core pulling block four (29) is also provided with an inclined hole two (34). The top of the power rod (28) passes through the ejection block (27) and is bent with a power inclined rod (35), and the power inclined rod (35) is slidingly matched with the inclined hole two (34). The bottom of the sliding cavity (33) is also provided with a T-shaped slide rail one (36), and the core pulling block four (29) is slidingly matched with the T-shaped slide rail one (36).

2. The top-slip release injection mold according to claim 1, characterized in that: The core pulling block 1 (8) is also provided with an inclined groove 1 (16), and the spring core pulling assembly (14) includes a core pulling block 2 (17), a reset block (18), a driving spring 1 (19) and a limit screw (20). The core pulling block 2 (17) is slidably arranged in the inclined groove 1 (16), the reset block (18) is arranged at the bottom of the upper mold (2) and limits the position of the core pulling block 2 (17), the driving spring 1 (19) is arranged between the core pulling block 1 (8) and the core pulling block 2 (17) and drives the core pulling block 2 (17) to move out of the inclined groove 1 (16), and the limit screw (20) and the core pulling block 1 (8) are fixed and limit the moving stroke of the core pulling block 2 (17).

3. The top-slip release injection mold according to claim 1, characterized in that: The core pulling block 1 (8) is also provided with an inclined hole 1 (21), and the inverted hook core pulling assembly (15) includes a core pulling block 3 (22), a piston tube (24) and an air flow channel (25). The core pulling block 3 (22) is slidingly arranged in the piston tube (24), and the air flow channel (25) is arranged in the core pulling block 1 (8) and is connected to the tail of the piston tube (24). A sealing plug (26) is provided at the tail of the core pulling block 3 (22), and the core pulling block 3 (22) moves by the air pressure in the piston tube (24).

4. The top-slip release injection mold according to claim 1, characterized in that: The bottom of the ejection block (27) is also provided with a T-shaped slide rail 2 (38), the core pulling block 5 (30) is provided with a T-shaped slider 2 (39), the T-shaped slider 2 (39) and the T-shaped slide rail 2 (38) are slidably matched, the core pulling block 5 (30) is provided with a T-shaped slide rail 3 (40), and the ejector rod (31) is also fixedly provided with a driving plate (42), the end of the driving plate (42) is also provided with a T-shaped slider 3 (41), the T-shaped slider 3 (41) and the T-shaped slide rail 3 (40) are slidably matched, and when the power rod (28) moves upward, the driving plate (42) drives the core pulling block 5 (30) to move along the direction of the T-shaped slide rail 2 (38).

5. The top-slip release injection mold according to claim 1, characterized in that: The core pulling block five (30) is also provided with a support plate (43), and the support plate (43) cooperates with the spring core pulling assembly (14) to form a through groove (92).

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