Reverse punch mechanism in a progressive die from bottom to top

Abstract

The utility model discloses a mechanism is punched in reverse from below to above in continuous mould, and the upper die can be installed in the upper of lower die and moves up and down, and the punch female die module is fixed on the upper side of upper die, and the waste material discharge channel that forms in the inside of punch female die module is penetrated through horizontally, and the punch female die blade mouth that forms in the lower end of punch female die module is communicated with waste material discharge channel, and the reverse punch is fixed on the upper side of lower die, and the upper die can make the punch female die module compress the material piece of being punched, and the reverse punch on lower die can cooperate with punch female die blade mouth and carry out the reverse punching to the material piece, and the reverse punch can top the punch waste material into waste material discharge channel, and the high pressure gas nozzle that communicates with high pressure gas providing device is fixed on the upper die or lower die, and the high pressure gas nozzle can blow high pressure gas to waste material discharge channel when closing mould and make the waste material discharge from waste material discharge channel to the outside of mould, and the utility model realizes the reverse punching demand of part hole burr surface on the top in continuous mould, and still does not influence other process stamping forming.

Description

Technical Field

[0001] This utility model relates to a hardware mold, and more particularly to a continuous die with a bottom-up reverse punching mechanism. Background Technology

[0002] Traditional hardware molds punch holes from top to bottom, and the waste material falls down automatically by its own weight. The burr side of the product is on the bottom. For some products, the punching direction of some holes and other areas of the product is opposite to the requirement of the burr side. It is necessary to add a single-action mold to punch out these holes with opposite punching directions. The production efficiency is low and it is difficult to achieve continuous die stamping to form the product in one go. Summary of the Invention

[0003] To overcome the above-mentioned defects, this utility model provides a continuous die in-drill reverse punching mechanism that can punch holes in both directions within the continuous die, thus meeting the requirement that the burr surface of the upper part of the product hole is opposite to the burr surface of other hole positions.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a continuous die in-mold reverse punching mechanism, including an upper die and a lower die. The upper die is mounted directly above the lower die and can move vertically. A punching die is fixedly mounted on the lower side of the upper die. A transversely penetrating waste discharge channel is formed inside the punching die. A punching die cutting edge communicating with the waste discharge channel is formed at the lower end of the punching die. A reverse punch is fixedly mounted on the upper side of the lower die. The descent of the upper die can cause the punching die to press down. The sheet material is to be punched, and at the same time, the reverse punch on the lower die can cooperate with the cutting edge of the punching die to punch the sheet material in the reverse direction. The reverse punch can push the punching waste into the waste discharge channel. A high-pressure air nozzle is fixedly installed on the upper or lower die. The high-pressure air nozzle is connected to a high-pressure air supply device located outside the progressive die through a pipe. The high-pressure air nozzle can be directly connected to one end of the waste discharge channel when the die is closed. The high-pressure air nozzle can blow high-pressure air into the waste discharge channel so that the waste is discharged from the other end of the waste discharge channel to the outside of the die.

[0005] As a further improvement of this utility model, the waste discharge channel extends horizontally within the punching recess module or forms an inclined extension state in which the height of one end is higher than the height of the other end.

[0006] As a further improvement of this utility model, a waste discharge guide plate is also fixedly provided on the upper or lower mold. One end of the waste discharge guide plate can be connected to the other side wall of the punching recess module in the mold closing state, and the height of one end of the waste discharge guide plate is not higher than the height of the lowest point of the other end of the waste discharge channel.

[0007] As a further improvement of this utility model, the high-pressure air nozzle is fixedly installed on the side wall of the punching recess module, and the blowing end of the high-pressure air nozzle extends into one end of the waste discharge channel.

[0008] As a further improvement of this utility model, the lower mold or the upper mold is also provided with a mold closing sensing device, and the high-pressure gas supply device is provided with a controller. The mold closing sensing device and the controller of the high-pressure gas supply device transmit signals to each other, and the controller can control the start and stop of the high-pressure gas supply device.

[0009] As a further improvement of this utility model, the lower die includes a lower die base, a lower die plate, a stripper slide, and a stripper spring. The lower die plate is fixedly installed on the upper side of the lower die base. The upper die plate has a T-shaped punch mounting hole with an upper section diameter smaller than the lower section diameter. The lower section of the reverse punch is a T-shaped structure that matches the punch mounting hole. The lower section of the reverse punch is inserted into the punch mounting hole, and its lower end is tightly clamped in the space formed between the lower die plate and the lower die base. The stripper slide is installed above the lower die plate and can move up and down a set distance. The stripper slide has a punch through hole for the upper section of the reverse punch to pass through. The upper section of the reverse punch can be slidably inserted into the punch through hole, and the upper end of the reverse punch can extend into the punching die cutting edge of the upper die through the punch through hole for punching. The stripper spring provides an upward elastic holding force to the stripper slide, so that the upper end of the reverse punch does not protrude above the upper surface of the stripper slide.

[0010] As a further improvement of this utility model, the punch through hole on the stripper slide is a T-shaped through hole with an upper section diameter smaller than the lower section diameter, and the upper part of the reverse punch forms a punching section with a reduced diameter. The diameter of the punching section matches the upper section diameter of the punch through hole on the stripper slide, and the lower section diameter of the punch through hole is larger than the upper end diameter of the lower section of the reverse punch.

[0011] As a further improvement of this utility model, the lower mold also includes a stripper plate, which is fixedly installed above the lower mold plate. The stripper plate is provided with a guide groove, and the stripper slider is inserted into the guide groove of the stripper plate, which can slide up and down.

[0012] As a further improvement of this utility model, the guide groove on the stripper plate is a T-shaped hollow structure with an upper end size larger than the lower end size. The stripper slider can slide up and down and is accommodated in the upper recess of the T-shaped hollow structure. The lower template is also provided with a hollow perforation with an upper end diameter larger than the lower end diameter. A connecting bolt is inserted into the hollow perforation. The upper end of the connecting bolt is fixedly connected to the lower end of the stripper slider. The lower end of the connecting bolt stops on the lower side of the lower template. The lower mold base is provided with a clearance hole that matches the size of the connecting bolt head. A stripper spring is sleeved on the outside of the connecting bolt. The lower end of the stripper spring stops on the step surface between the upper and lower ends of the hollow perforation. The upper end of the stripper spring stops on the lower end of the stripper slider.

[0013] As a further improvement of this utility model, the upper mold includes an upper mold base and an upper template. The upper template is fixedly installed below the upper mold base. The lower side of the upper mold base is provided with a recessed module mounting groove, and the lower template is provided with a recessed module clearance opening. The upper section of the punching recessed module is detachably and fixedly inserted into the recessed module mounting groove of the upper mold base, and the lower section of the punching recessed module is inserted into the recessed module clearance opening, with the lower end face of the punching recessed module aligned with the lower side of the lower template.

[0014] The beneficial effects of this utility model are as follows: This utility model sets a reverse punch on the lower die, sets a punching cavity module on the upper die, and forms a transverse waste discharge channel in the punching cavity module. A punching die cutting edge communicating with the waste discharge channel is set at the lower end of the punching cavity module, and a high-pressure air nozzle communicating with high-pressure air is set on the die. When the die is closed, the reverse punch punches the sheet upward, and the punching waste is pushed into the waste discharge channel by the reverse punch. High-pressure air is blown into the waste discharge channel through the high-pressure air nozzle to blow the punching waste out of the die, thereby realizing the automatic discharge of punching waste. This achieves the reverse punching requirement of some holes with burrs on the upper side in the continuous die, without affecting the stamping and forming of other processes. This utility model also realizes the automatic stripping of the sheet when the die is opened by setting a stripper slide that slides up and down in the lower die and a stripper spring that provides elastic force to the stripper slide. This avoids the situation where the reverse punch cannot be stripped from the hole of the sheet. The stripper slide is driven by the stripper spring alone and does not affect other processes of the continuous die. Attached Figure Description

[0015] Figure 1 The front view of the continuous mold using this utility model; Figure 2 A top view of the continuous mold using this utility model; Figure 3 for Figure 2 Sectional view along line AA; Figure 4 This is a schematic diagram of the structural principle of this utility model. Detailed Implementation

[0016] Example: A continuous die in-mold reverse punching mechanism includes an upper die 1 and a lower die 2. The upper die 1 is mounted directly above the lower die 2 and is capable of vertical movement. A punching die module 11 is fixedly mounted on the lower side of the upper die 1. A transversely penetrating waste material discharge channel 111 is formed inside the punching die module 11. A punching die cutting edge communicating with the waste material discharge channel 111 is formed at the lower end of the punching die module 11. A reverse punch 21 is fixedly mounted on the upper side of the lower die 2. When the upper die 1 descends, the punching die module 11 presses against the material sheet 3 to be punched, while the lower die... The reverse punch 21 on the upper die 1 or the lower die 2 can cooperate with the cutting edge of the punching die to punch the sheet 3 in the reverse direction. The reverse punch 21 can push the punched waste 6 into the waste 6 discharge channel 111. A high-pressure air nozzle 4 is fixedly installed on the upper die 1 or the lower die 2. The high-pressure air nozzle 4 is connected to a high-pressure air supply device located outside the continuous die through a pipe. The high-pressure air nozzle 4 can be directly connected to one end of the waste 6 discharge channel 111 when the die is closed. The high-pressure air nozzle 4 can blow high-pressure air into the waste 6 discharge channel 111 so that the waste 6 is discharged from the other end of the waste 6 discharge channel 111 to the outside of the die.

[0017] During reverse punching, the upper die 1 descends and closes with the lower die 2. The punching die 11 presses down on the sheet 3 to achieve clamping and positioning of the sheet 3. At the same time, the reverse punch 21 cooperates with the cutting edge of the punching die to punch the sheet 3 from bottom to top. The punching waste 6 is pushed up by the reverse punch 21 into the waste 6 discharge channel 111. The high-pressure air nozzle 4 blows high-pressure air into the waste 6 discharge channel 111, thereby discharging the punching waste 6 along the waste 6 discharge channel 111 to the outside of the die. A waste 6 frame or waste 6 bag can be set on the outside of the die to receive the waste 6.

[0018] The waste material discharge channel 111 extends horizontally within the punching recess module 11 or forms an inclined extension with one end higher than the other. The waste material discharge channel 111 adopts a straight channel or an inclined channel, thereby enabling the waste material 6 to be discharged smoothly.

[0019] A waste discharge guide plate 5 is also fixedly provided on the upper mold 1 or the lower mold 2. One end of the waste discharge guide plate 5 can be connected to the other side wall of the punching recess module 11 in the mold closing state, and the height of one end of the waste discharge guide plate 5 is not higher than the lowest point of the other end of the waste discharge channel 111. The waste discharge guide plate 5 is used to guide the punching waste 6 blown out from the waste discharge channel 111 so that it can be smoothly discharged to the outside of the mold.

[0020] The high-pressure air nozzle 4 is fixedly installed on the side wall of the punching recess module 11, and the blowing end of the high-pressure air nozzle 4 extends into one end of the waste material discharge channel 111. The high-pressure air nozzle 4 is fixedly installed on the side wall of the punching recess module 11, ensuring that it blows high-pressure air directly into the waste material discharge channel 111. Alternatively, the high-pressure air nozzle 4 can be set on the lower mold 2, and a corresponding clearance position can be set on the upper mold 1. When the mold is closed, the high-pressure air nozzle 4 can be directly aligned with the waste material discharge channel 111 on the upper mold 1.

[0021] The lower mold 2 or upper mold 1 is also equipped with a mold closing sensing device, and the high-pressure gas supply device is equipped with a controller. The mold closing sensing device and the controller of the high-pressure gas supply device transmit signals to each other, and the controller can control the start and stop of the high-pressure gas supply device. By using the mold closing sensing device to control the start and stop of the high-pressure gas supply device, high-pressure gas is not blown when the mold is opened, but only when the mold is closed and the material is discharged.

[0022] The lower die 2 includes a lower die base, a lower die plate 22, a stripper slide 23, and a stripper spring. The lower die plate 22 is fixedly installed on the upper side of the lower die base. The upper die plate 13 has a T-shaped punch mounting hole with an upper section diameter smaller than the lower section diameter. The lower section of the reverse punch 21 is a T-shaped structure that matches the punch mounting hole. The lower section of the reverse punch 21 is inserted into the punch mounting hole, and its lower end is tightly clamped in the space formed between the lower die plate 22 and the lower die base. The stripper slide 23 can... The stripper slide 23, with a set lifting distance, is mounted above the lower template 22. It has a punch through-hole for the upper section of the reverse punch 21 to pass through. The upper section of the reverse punch 21 is slidably inserted into the punch through-hole, and its upper end can extend through the punch through-hole into the punching die edge of the upper mold 1 for punching. The stripper spring provides an upward elastic holding force to the stripper slide 23, ensuring that the upper end of the reverse punch 21 does not protrude above the upper surface of the stripper slide 23. During mold opening, the stripper slide 23 floats upward a certain distance under the action of the stripper spring. At this time, the reverse punch 21 retracts into the stripper slide 23, achieving automatic stripping of the reverse punch 21 from the sheet 3. This stripper slide 23 is only used for the reverse punching process and will not affect the forward stripping of other processes.

[0023] The ejector slider 23 has a T-shaped through hole with an upper diameter smaller than the lower diameter. The upper section of the reverse punch 21 has a reduced diameter punch section, the diameter of which matches the upper diameter of the punch through hole on the ejector slider 23. The lower diameter of the punch through hole is larger than the upper diameter of the lower section of the reverse punch 21. This structure avoids interference between the ejector slider 23 and the lower section of the reverse punch 21 during mold closing.

[0024] The lower mold 2 also includes a stripper plate 24, which is fixedly installed above the lower mold plate 22. The stripper plate 24 is provided with a guide groove 241, and the stripper slide block 23 is slidably inserted into the guide groove 241 of the stripper plate 24. The stripper plate 24 is used to accommodate and guide the stripper slide block 23. The stripper plate 24 can be used as a concave mold in other processes.

[0025] The guide groove 241 on the stripper plate 24 is a T-shaped hollow structure with an upper dimension larger than the lower dimension. The stripper slider 23 can slide up and down and is accommodated in the upper groove of the T-shaped hollow structure. The lower template 22 is also provided with a hollow through hole 221 with an upper diameter larger than the lower diameter. A connecting bolt is inserted into the hollow through hole 221. The upper end of the connecting bolt is fixedly connected to the lower end of the stripper slider 23, and the lower end of the connecting bolt stops on the lower side of the lower template 22. The lower mold base is provided with a clearance hole matching the size of the connecting bolt head. A stripper spring is sleeved on the outside of the connecting bolt. The lower end of the stripper spring stops on the stepped surface between the upper and lower ends of the hollow through hole 221, and the upper end of the stripper spring stops at the lower end of the stripper slider 23. The connecting bolt can limit the sliding distance of the stripper slider 23 and also guide the stripper spring.

[0026] The upper mold 1 includes an upper mold base 12 and an upper template 13. The upper template 13 is fixedly installed below the upper mold base 12. The lower side of the upper mold base 12 is provided with a recessed module mounting groove, and the lower template 22 is provided with a recessed module clearance opening. The upper section of the punching recessed module 11 is detachably and fixedly inserted into the recessed module mounting groove of the upper mold base 12, and the lower section of the punching recessed module 11 is inserted into the recessed module clearance opening, with the lower end face of the punching recessed module 11 aligned with the lower side of the lower template 22. The punching recessed module 11, the reverse punch 21, and the stripper slide 23 are all detachable structures, facilitating the adjustment of the reverse punch diameter on products of different specifications.

Claims

1. A continuous die in-mold reverse punching mechanism, comprising an upper die (1) and a lower die (2), wherein the upper die is mounted directly above the lower die and is capable of vertical movement, characterized in that: A punching die module (11) is fixedly installed on the lower side of the upper die. A transverse waste discharge channel (111) is formed inside the punching die module. A punching die cutting edge communicating with the waste discharge channel is formed at the lower end of the punching die module. A reverse punch (21) is fixedly installed on the upper side of the lower die. When the upper die descends, the punching die module can press the piece (3) to be punched. At the same time, the reverse punch on the lower die can cooperate with the punching die cutting edge to punch the piece in the reverse direction. The reverse punch can push the punching waste into the waste discharge channel. A high-pressure air nozzle (4) is fixedly installed on the upper or lower die. The high-pressure air nozzle is connected to a high-pressure air supply device located outside the continuous die through a pipe. The high-pressure air nozzle can be directly connected to one end of the waste discharge channel when the die is closed. The high-pressure air nozzle can blow high-pressure air into the waste discharge channel so that the waste (6) is discharged from the other end of the waste discharge channel to the outside of the die.

2. The continuous die in-mold reverse punching mechanism according to claim 1, characterized in that: The waste discharge channel extends horizontally within the punching recess module or forms an inclined extension where one end is higher than the other.

3. The continuous die in-situ reverse punching mechanism according to claim 1, characterized in that: A waste discharge guide plate (5) is also fixedly provided on the upper or lower mold. One end of the waste discharge guide plate can be connected to the other side wall of the punching recess module in the mold closing state, and the height of one end of the waste discharge guide plate is not higher than the height of the lowest point of the other end of the waste discharge channel.

4. The continuous die in-situ reverse punching mechanism according to claim 1, characterized in that: The high-pressure air nozzle is fixedly installed on the side wall of the punching module, and the blowing end of the high-pressure air nozzle extends into one end of the waste discharge channel.

5. The continuous die in-mold reverse punching mechanism according to claim 1 or 4, characterized in that: The lower or upper mold is also equipped with a mold closing sensing device, and the high-pressure gas supply device is equipped with a controller. The mold closing sensing device and the controller of the high-pressure gas supply device transmit signals to each other, and the controller can control the start and stop of the high-pressure gas supply device.

6. The continuous die in-between reverse punching mechanism according to claim 1, characterized in that: The lower die includes a lower die base, a lower die plate (22), a stripper slide (23), and a stripper spring. The lower die plate is fixedly installed on the upper side of the lower die base. The upper die plate has a T-shaped punch mounting hole with an upper section diameter smaller than the lower section diameter. The lower section of the reverse punch is a T-shaped structure that matches the punch mounting hole. The lower section of the reverse punch is inserted into the punch mounting hole, and its lower end is tightly clamped in the space formed between the lower die plate and the lower die base. The stripper slide is installed above the lower die plate and can move up and down a set distance. The stripper slide has a punch through hole for the upper section of the reverse punch to pass through. The upper section of the reverse punch can be slidably inserted into the punch through hole, and the upper end of the reverse punch can extend into the punching die cutting edge of the upper die through the punch through hole for punching. The stripper spring provides an upward elastic holding force to the stripper slide, so that the upper end of the reverse punch does not protrude above the upper surface of the stripper slide.

7. The continuous die in-situ reverse punching mechanism according to claim 6, characterized in that: The punch through hole on the stripper slide is a T-shaped through hole with an upper diameter smaller than the lower diameter. The upper part of the reverse punch forms a punching section with a reduced diameter. The diameter of the punching section matches the upper diameter of the punch through hole on the stripper slide, and the lower diameter of the punch through hole is larger than the upper diameter of the lower section of the reverse punch.

8. The continuous die in-between reverse punching mechanism according to claim 6, characterized in that: The lower mold also includes a stripper plate (24), which is fixedly installed above the lower mold plate. The stripper plate is provided with a guide groove (241), and the stripper slider is inserted into the guide groove of the stripper plate and can slide up and down.

9. The continuous die in-between reverse punching mechanism according to claim 8, characterized in that: The guide groove on the stripper plate is a T-shaped hollow structure with an upper end larger than the lower end. The stripper slider can slide up and down and is accommodated in the upper groove of the T-shaped hollow structure. The lower template is also provided with a hollow perforation (221) with an upper end diameter larger than the lower end diameter. A connecting bolt is inserted into the hollow perforation. The upper end of the connecting bolt is fixedly connected to the lower end of the stripper slider. The lower end of the connecting bolt stops on the lower side of the lower template. The lower mold base is provided with a clearance hole that matches the size of the connecting bolt head. A stripper spring is sleeved on the outside of the connecting bolt. The lower end of the stripper spring stops on the step surface between the upper and lower ends of the hollow perforation. The upper end of the stripper spring stops on the lower end of the stripper slider.

10. The continuous die in-situ reverse punching mechanism according to claim 1, characterized in that: The upper mold includes an upper mold base (12) and an upper template (13). The upper template is fixedly installed below the upper mold base. The lower side of the upper mold base is provided with a recessed module mounting groove. The lower template is provided with a recessed module clearance opening. The upper section of the punching recessed module is detachably and fixedly inserted into the recessed module mounting groove of the upper mold base. The lower section of the punching recessed module is inserted into the recessed module clearance opening, and the lower end face of the punching recessed module is aligned with the lower side of the lower template.

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