Punching strip toothed die plate

Abstract

The utility model relates to a punch with tooth drawing template, including upper template, lower template, support baffle, ejector rod, moving seat and reset subassembly, when punching, the ejector rod moves downward, and the steel plate surface moves downward, the boss on moving seat moves downward under stress, and the steel plate is driven region enters the area surrounded by boss and through -hole, fills the whole boss and the area surrounded by through -hole because of the ductility of metal, and because the arc chamfer is formed at the edge of ejector rod end, the steel plate will stretch to the arc chamfer position in the extrusion process, thereby driving the steel plate inside the end of steel plate punching to collapse, thereby forming the round angle, the tooth drawn like this, the lower surface end forms annular arc chamfer, feels smooth, will not have barb, and when moving seat can not continue to move, the boss on ejector rod continues to move downward, and the boss will extend into the discharge hole, and the cutting material is driven into the discharge hole.

Description

Technical Field

[0001] This utility model belongs to the field of steel plate mold technology, specifically relating to a punching template with tooth extraction. Background Technology

[0002] Currently, punching dies and tooth-removing dies are operated separately. First, the steel plate is punched, and then the punched area is toothed. This setup requires two sets of dies, resulting in low production efficiency. Furthermore, the ends of the tooth-removing areas of the steel plate are very sharp after the tooth removal process, requiring subsequent grinding. Otherwise, it can easily scratch workers during use. In view of this, this solution was developed. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a punching template with tooth extraction, which can complete punching and tooth extraction in one step.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a punching template with tooth extraction, including an upper template, a lower template, a support partition, a top rod, a movable seat and a reset assembly. The upper template has punched holes, the top rod is disposed in the punched holes, the end of the top rod is provided with a protruding post, and the edge of the end of the top rod is formed with an arc-shaped chamfer.

[0005] The lower template has a stamping groove with its opening located on the lower surface of the template. The bottom of the stamping groove has a through hole extending to the surface of the lower template. A protrusion is formed on the movable seat, located within the through hole. The movable seat is located within the stamping groove, and a discharge groove is formed on the protrusion. The discharge groove is adapted to the protruding post. The supporting partition is located below the lower template, and there is a moving space between the movable seat and the supporting partition. The reset assembly is used to reset the movable seat.

[0006] Furthermore, the reset assembly includes a reset rod and a reset elastic body. A contact plate is provided at the bottom of the reset rod, a through hole is formed in the support partition, the contact plate is located below the through hole, the reset rod passes through the through hole and abuts against the lower surface of the movable seat, and the reset elastic body is located below the contact plate.

[0007] Furthermore, there are multiple reset rods, which are arranged at circumferential intervals along the axis of the convex column.

[0008] Furthermore, the movable seat includes a seat body and a forming column, the protrusion is disposed on the upper surface of the forming column, the forming column passes vertically through the seat body and is engaged with the seat body.

[0009] Furthermore, an installation hole is formed in the middle of the base body, and two locking holes are formed on the side wall of the base body. The two locking holes are located on both sides of the installation hole and partially overlap the locking holes and the installation hole in the projection of the vertical plane. Locking notches are formed on both sides of the forming column. The forming column is located in the installation hole and is fixed by a locking block passing through the locking hole and the installation hole and locking into the locking notch.

[0010] Furthermore, the bottom of the discharge trough extends to the lower surface of the forming column to form a discharge hole.

[0011] Furthermore, the discharge hole includes a vertical section and a conical end, the vertical section is located above the conical section, the diameter of the conical section increases from top to bottom, and the support partition has a discharge hole corresponding to the discharge hole.

[0012] Furthermore, the punching template with tooth extraction also includes an upper die base and an upper partition plate, which are connected sequentially from top to bottom, and the push rod passes through the upper die base, the upper partition plate, and the upper template.

[0013] Furthermore, the push rod includes an ejector section and a connecting section, the connecting section being located above the ejector section, and the diameter of the connecting section being larger than that of the ejector section;

[0014] A guide hole is formed in the upper template. The guide hole includes a moving section and a limiting section. The limiting section is located below the moving section. The diameter of the limiting section is adapted to the diameter of the ejection section. The diameter of the moving section is adapted to the diameter of the connecting section.

[0015] Furthermore, the punching template with tooth extraction also includes a lower die base, which is located below the support partition plate, and the reset assembly is mounted on the lower die base.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In this invention, during punching, the push rod moves downwards, pushing the steel plate surface downwards. The protrusion on the moving seat moves downwards under force. The area of ​​the steel plate being pushed enters the area surrounded by the protrusion and the through hole. Due to the ductility of the metal, it fills the entire area surrounded by the protrusion and the through hole. Moreover, since the edge of the push rod end has an arc-shaped chamfer, the steel plate will extend towards the arc-shaped chamfer during the extrusion process, thereby causing the steel plate at the punching end to collapse inwards, thus forming a rounded corner. In this way, the lower surface end of the extracted tooth forms an annular arc-shaped chamfer, which feels smooth to the touch and has no barbs. When the moving seat can no longer move, the protrusion on the push rod continues to move downwards, and the protrusion will extend into the discharge hole, pushing the cut material into the discharge hole. Attached Figure Description

[0018] Figure 1This is a cross-sectional view of a punching template with tooth extraction according to the present invention.

[0019] Figure 2 This is a cross-sectional view of the top rod position in this utility model;

[0020] Figure 3 This is a cross-sectional view of the location of the reset component in this utility model.

[0021] The markings in the diagram are: 1. Upper mold base; 2. Upper partition plate; 3. Upper template; 31. Guide hole; 311. Moving section; 312. Limiting section; 4. Lower template; 5. Support partition plate; 6. Lower mold base; 7. Ejector rod; 71. Ejection section; 72. Connecting section; 73. Chamfered corner; 74. Protruding column; 8. Moving seat; 81. Seat body; 82. Forming column; 83. Protruding seat; 831. Discharge hole; 8311. Vertical section; 8312. Conical end; 9. Reset assembly; 91. Reset rod; 92. Reset elastic body. Detailed Implementation

[0022] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0023] like Figures 1-3 As shown, this embodiment provides a punching template with tooth extraction, including an upper mold base 1, an upper partition plate 2, an upper template 3, a lower template 4, a supporting partition plate 5, a lower mold base 6, a push rod 7, a moving seat 8, and a reset assembly 9.

[0024] The upper mold base 1, upper partition plate 2, and upper template 3 are connected sequentially from top to bottom. The ejector rod 7 passes through the upper mold base 1, upper partition plate 2, and upper template 3. Specifically, the upper template 3 has punched holes, and the ejector rod 7 is set in the punched holes. The end of the ejector rod 7 is provided with a protrusion 74. The ejector rod 7 is driven by a cylinder or other existing equipment that can drive up and down. In this solution, a hydraulic cylinder is used. The end of the ejector rod 7 is provided with a protrusion 74, and an arc-shaped chamfer 73 is formed at the edge of the end of the ejector rod 7.

[0025] Preferably, the push rod 7 includes an ejector section 71 and a connecting section 72. The connecting section 72 is located above the ejector section 71, and the diameter of the connecting section 72 is larger than that of the ejector section 71. A guide hole 31 is formed in the upper template 3. The guide hole 31 includes a moving section 311 and a limiting section 312. The limiting section 312 is located below the moving section 311, and the diameter of the limiting section 312 is adapted to the diameter of the ejector section 71. There is a gradual transition between the moving section 311 and the limiting section 312 (the diameter becomes smaller and smaller). The diameter of the moving section 311 is adapted to the diameter of the connecting section 72. Through the ejector section 71 and the connecting section 72, the moving section 311 and the limiting section 312, the maximum moving distance of the push rod 7 can be limited.

[0026] The lower template 4, supporting partition 5, and lower mold base 6 are arranged sequentially from top to bottom. The lower template 4 has a stamping groove with the opening located on the lower surface of the lower template 4. The bottom of the stamping groove has a through hole extending to the surface of the lower template 4. A boss 83 is formed on the movable base 8, which is located in the through hole. The movable base 8 is located in the stamping groove. A discharge hole 831 is formed on the boss 83, which is adapted to the protrusion 74. Specifically, the movable base 8 includes a base body 81 and a forming pillar 82, with the boss 83 disposed on the upper surface of the forming pillar 82. The forming column 82 passes vertically through the base body 81 and is engaged with the base body 81. The base body 81 has a mounting hole in the middle and two locking holes on the side wall. The two locking holes are located on both sides of the mounting hole and partially overlap the mounting hole in the projection of the vertical plane. The forming column 82 has locking notches on both sides. The forming column 82 is located in the mounting hole and is fixed by a locking block passing through the locking hole and the mounting hole and locking into the locking notch. This design allows the movable base 8 to be produced and assembled more easily.

[0027] The forming column 82 has a discharge hole 831 that runs vertically through it. The discharge hole 831 includes a vertical section 8311 and a tapered end 8312. The vertical section 8311 is located above the tapered section. The diameter of the tapered section increases from top to bottom. The support partition 5 and the lower mold base 6 have discharge holes corresponding to the discharge hole 831. With this top-small and bottom-large arrangement, waste material can be smoothly discharged from the discharge hole 831.

[0028] In another embodiment, the discharge hole 831 can also be replaced by a discharge trough, the depth of which should be greater than the length of the protrusion 74.

[0029] The support partition 5 is located below the lower template 4. There is a moving space between the movable seat 8 and the support partition 5. The height of the moving space is the height of the tooth extraction. The reset assembly 9 is used to reset the movable seat 8. Specifically, the reset assembly 9 is installed on the lower mold base 6. The reset assembly 9 includes a reset rod 91 and a reset elastic body 92. The reset elastic body 92 is a spring. A contact plate is provided at the bottom of the reset rod 91. The support partition 5 forms a through hole. The contact plate is located below the through hole. The reset rod 91 passes through the through hole and abuts against the lower surface of the movable seat 8. The reset elastic body 92 is located below the contact plate. There are four reset rods 91. The four reset rods 91 are arranged in a ring at intervals along the axis of the protrusion 74. In this scheme, a single reset elastic body 92 drives the four reset rods 91 together.

[0030] Working principle: First, the upper mold plate 3 and the lower mold plate 4 are closed, and the steel plate is clamped between the upper mold plate 3 and the lower mold plate 4. The ejector rod 7 moves downward under the drive of the cylinder. When the protrusion 74 on the ejector rod 7 hits the steel plate, the steel plate deforms downward. The protrusion 83 is pushed and moves downward. Since the forming column 82 is engaged with the seat 81, the protrusion 83 moves down, and the forming column 82 and the seat 81 also move down together. The deformed steel plate enters the through hole. Until the moving seat 8 moves down to its limit and abuts against the support partition 5, the push rod 7 has not yet reached its maximum displacement. As the push rod 7 continues to push out, due to the ductility of the metal, it fills the area surrounded by the entire boss 83 and the through hole. Moreover, since the edge of the push rod 7 has an arc-shaped chamfer 73, the steel plate will extend towards the arc-shaped chamfer 73 during the extrusion process, thereby causing the steel plate at the end of the punched hole to collapse inward, thus forming a rounded corner. In this way, the lower surface end of the extracted tooth forms an annular arc-shaped chamfer, which feels smooth to the touch and has no barbs. During the tooth extraction process (during the movement of the push rod 7), the elastic reset body 92 continuously provides an upward pushing force to the boss 83. Only when the boss 83 continuously applies an upward force to the steel plate at the extraction point during the tooth extraction process can the inwardly folded arc-shaped chamfer be guaranteed at the opening of the extracted tooth.

[0031] The protrusion 74 extends into the discharge hole 831, and a shearing force is formed between the protrusion 74 and the discharge hole 831 to cut the excess waste material of the steel plate into the discharge hole 831 for discharge. Then the ejector rod 7 is pushed out, the mold is opened, and the moving seat 8 is reset under the action of the reset rod 91 and the reset elastic body 92.

[0032] The foregoing has shown and described the basic principles and main features of this invention, as well as its advantages. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications can be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A punching template with tooth extraction, characterized in that: It includes an upper template, a lower template, a support partition, a top rod, a movable seat, and a reset assembly. The upper template has punched holes, the top rod is disposed in the punched holes, the end of the top rod is provided with a protruding post, and the edge of the end of the top rod is formed with an arc-shaped chamfer. The lower template has a stamping groove with its opening located on the lower surface of the template. The bottom of the stamping groove has a through hole extending to the surface of the lower template. A protrusion is formed on the movable seat, located within the through hole. The movable seat is located within the stamping groove, and a discharge groove is formed on the protrusion. The discharge groove is adapted to the protruding post. The supporting partition is located below the lower template, and there is a moving space between the movable seat and the supporting partition. The reset assembly is used to reset the movable seat.

2. The punching template with tooth extraction according to claim 1, characterized in that: The reset assembly includes a reset rod and a reset elastic body. A contact plate is provided at the bottom of the reset rod. A through hole is formed in the support partition. The contact plate is located below the through hole. The reset rod passes through the through hole and abuts against the lower surface of the movable seat. The reset elastic body is located below the contact plate.

3. The punching template with tooth extraction according to claim 2, characterized in that: The number of reset rods is multiple, and the multiple reset rods are arranged at circumferential intervals along the axis of the convex column.

4. The punching template with tooth extraction according to claim 1, characterized in that: The movable seat includes a seat body and a forming column. The protrusion is disposed on the upper surface of the forming column, and the forming column passes vertically through the seat body and is engaged with the seat body.

5. The punching template with tooth extraction according to claim 4, characterized in that: The base has a mounting hole in the middle and two locking holes on the side wall of the base. The two locking holes are located on both sides of the mounting hole and partially overlap the mounting hole in the projection of the vertical plane. The molding column has locking notches on both sides. The molding column is located in the mounting hole and is fixed by a locking block passing through the locking hole and the mounting hole and locking into the locking notch.

6. The punching template with tooth extraction according to claim 4, characterized in that: The bottom of the discharge trough extends to the lower surface of the forming column to form a discharge hole.

7. The punching template with tooth extraction according to claim 6, characterized in that: The discharge hole includes a vertical section and a conical end. The vertical section is located above the conical section. The diameter of the conical section increases from top to bottom. The support partition has a discharge hole corresponding to the discharge hole.

8. The punching template with tooth extraction according to claim 1, characterized in that: The punching template with tooth extraction also includes an upper die base and an upper partition plate. The upper die base, upper partition plate, and upper template are connected in sequence from top to bottom, and the push rod passes through the upper die base, upper partition plate, and upper template.

9. The punching template with tooth extraction according to claim 8, characterized in that: The push rod includes an ejector section and a connecting section, the connecting section being located above the ejector section, and the diameter of the connecting section being larger than that of the ejector section; A guide hole is formed in the upper template. The guide hole includes a moving section and a limiting section. The limiting section is located below the moving section. The diameter of the limiting section is adapted to the diameter of the ejection section. The diameter of the moving section is adapted to the diameter of the connecting section.

10. The punching template with tooth extraction according to claim 1, characterized in that: The punching template with tooth extraction also includes a lower die base, which is located below the support partition, and the reset assembly is installed on the lower die base.

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