Leather punching forming device

Abstract

The invention relates to a leather punching forming device which comprises an oil press, the oil press is provided with a rack, a punching plate and a workbench, the punching plate and the workbench are arranged on the rack, the punching plate can move back and forth close to or away from the workbench in the longitudinal direction, a punching die holder is fixedly arranged on the workbench, and a cavity is formed in the punching die holder; a plurality of punching pipes are arranged on the upper wall of the punching die base, punching openings are formed in the upper ends of the punching pipes and communicate with the cavity, and the cavity is connected with the first air exhaust assembly through a first air exhaust pipe. The punching device has the beneficial effects that vacuum is formed in the cavity through air exhaust of the first air exhaust assembly, and during punching, chippings left in the punching pipe enter the first air exhaust pipe through the punching pipe and then are sucked away by the first air exhaust assembly, so that the chippings can be collected in the punching process, and the defects in the prior art are avoided.

Description

Technical Field

[0001] The invention relates to a leather punching and forming device. Background Art

[0002] Existing leather is punched using a punching machine. If the waste chips punched out are not properly removed in time, the waste chips will scatter and accumulate on the leather on the workbench. These waste chips are likely to fall to the position where the leather is to be processed, interfering with the accuracy of leather punching, reducing the quality of leather punching, and easily adhering to the punch or mold, and even easily damaging the punch or mold.

[0003] At present, in order to remove the waste, a hose connected to the suction device is often provided on the punch, so as to try to remove the waste scattered on the leather after leather processing as soon as possible. However, due to the up and down or even rotational movement of the existing punch, it is easy to pull the hose. If it is a multi-punch punching machine, the hoses between the punches are easy to collide with each other during the punch processing, causing the hoses to be entangled, displaced or even broken, affecting the cleaning effect; and the suction range of the pipe mouth is limited, and the waste scattered on the leather cannot be completely cleaned in the first time. The above-mentioned disadvantages still exist. Therefore, the existing needs to be further improved. Summary of the invention

[0004] The object of the present invention is to provide a leather punching and forming device which can collect scraps during the punching process.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A leather punching and forming device includes a hydraulic press, which has a frame and a punching plate and a workbench arranged on the frame. The punching plate can move back and forth along the longitudinal direction close to or away from the workbench. A punching die base is fixedly arranged on the workbench, a cavity is formed in the punching die base, and a plurality of punching tubes are arranged on the upper wall of the punching die base. A punching cutout is formed at the upper end of the punching tube and is connected to the cavity. The cavity is connected to a first exhaust assembly through a first exhaust pipe.

[0006] The advantage of the present invention is that vacuum is formed in the cavity by exhausting air through the first exhaust component. When punching, debris retained in the punching tube will enter the first exhaust pipe through the punching tube and be sucked away by the first exhaust component, so that the debris can be collected during the punching process, avoiding the disadvantages of the prior art.

[0007] Furthermore, the cavity of the punching die base is divided into an upper cavity and a lower cavity distributed one above and one below by a partition, the first exhaust pipe is connected to the lower cavity, the upper cavity is connected to the second exhaust assembly through the second exhaust pipe, and the second exhaust pipe is provided with a one-way valve; the partition is provided with a plurality of holes, and the punching die base is also provided with a closing plate, the closing plate is arranged close to the lower surface of the partition and has a plurality of door holes arranged corresponding to the holes of the partition, the closing plate has an open position and a closed position under the action of a pushing mechanism, when the closing plate is in the open position, the holes are connected to the door holes to connect the upper cavity and the lower cavity, the one-way valve is closed to prevent the upper cavity from connecting with the second exhaust assembly, when the closing plate is in the closed position, the holes are staggered with the door holes to isolate the upper cavity and the lower cavity, the one-way valve is opened to connect the upper cavity with the second exhaust assembly. By activating the closing plate, a continuous vacuum can be generated in the lower chamber, and in the brief moment of punching, the hole is staggered with the door hole so that the upper chamber and the lower chamber are isolated. The upper chamber has a stronger negative pressure, which can not only better and more firmly adsorb the leather to the end of the punching tube, but also, after the punching is completed, the debris can be first adsorbed into the collection chamber of the second debris collection box.

[0008] Furthermore, the first vacuum assembly includes a first debris collection box and a first vacuum device. The first debris collection box is divided into a collection chamber and a vacuum chamber by a filter screen. The filter screen has filter holes that allow air to pass through but prevent debris from passing through. The other end of the first vacuum pipe is connected to the collection chamber, and the vacuum pipe of the first vacuum device is connected to the vacuum chamber.

[0009] Furthermore, the second air extraction assembly includes a second debris collection box and a second air extraction device. The second debris collection box is divided into a collection chamber and an air extraction chamber by a filter screen. The filter screen has filter holes that allow air to pass through but prevent debris from passing through. One end of the second air extraction pipe is connected to the upper chamber, and the second end of the second air extraction pipe is connected to the collection chamber. The air extraction pipe of the second air extraction device is connected to the air extraction chamber.

[0010] Furthermore, the holes and door openings are all long strip-shaped through holes, the length direction of each hole and each door opening is perpendicular to the pushing direction of the pushing mechanism, and the holes and each door opening are arranged at intervals along the pushing direction of the pushing mechanism.

[0011] Furthermore, the pushing mechanism is a cylinder, and the cylinder body of the cylinder is fixedly installed on the workbench.

[0012] Furthermore, guide holes are provided on the side walls on both sides of the punching die base, and guide posts are provided at the corresponding guide holes at the opposite ends of the closing plate. A spring is sleeved between the guide post at one end and the punching die base, one end of the spring abuts against the inner side wall of the punching die base, and the other end abuts against the closing plate. Under the action of the spring, the closing plate is in the open position, and under the action of the pushing mechanism, the closing plate overcomes the force of the spring and is in the closed position.

[0013] Furthermore, the frame is provided with a transverse driving mechanism and a transverse guide rail, the workbench is installed on the guide block, the guide block is cooperatively connected with the transverse guide rail, and the transverse driving mechanism connects the workbench so that it can slide back and forth along the direction of the transverse guide rail and has a punching station and a unloading station.

[0014] Furthermore, the lateral drive mechanism includes a motor, a screw and a nut seat, the nut seat is fixedly connected to the workbench, the nut seat is transmission-coordinatedly connected to the screw, the motor is fixedly mounted on the frame and connected to the screw through a gear box to drive the screw to rotate forward or reverse. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the front view of the leather punching and forming device in an embodiment of the present invention.

[0016] Figure 2 It is a schematic diagram of a side view of a leather punching and forming device in an embodiment of the present invention.

[0017] Figure 3 It is a three-dimensional schematic diagram of the punching die base placed on a workbench in an embodiment of the present invention.

[0018] Figure 4 It is a schematic cross-sectional view of the punching die base when it is placed on a workbench in an embodiment of the present invention.

[0019] Figure 5 It is a schematic cross-sectional view of the structure when the punching die holder is placed on a workbench in an embodiment of the present invention (the closing plate is in the closed position).

[0020] Figure 6 Schematic diagram of the cross-sectional structure of the first air extraction component in an embodiment of the present invention. DETAILED DESCRIPTION

[0021] As attached Figure 1 and attached Figure 2 As shown, a leather punching and forming device includes a hydraulic press, which has a frame 1 and a punching plate 11 and a workbench 12 arranged on the frame 1. The punching plate 11 can move back and forth along the longitudinal direction close to or away from the workbench 12. The punching plate 11 is installed on the punch of a conventional hydraulic press. The up and down movement of the punch of the hydraulic press drives the up and down movement of the punching plate 11 to achieve the back and forth movement close to or away from the workbench 12.

[0022] The frame 1 is provided with a transverse driving mechanism 13 and a transverse guide rail 14. The workbench 12 is mounted on a guide block 15, which is connected to the transverse guide rail 14. The transverse driving mechanism 13 is connected to the workbench 12 so that it can slide back and forth along the direction of the transverse guide rail 14 and has a punching station and a discharge station. Specifically, the transverse driving mechanism 13 includes a motor, a screw and a nut seat. The nut seat is fixedly connected to the workbench 12, and the nut seat is connected to the screw in a transmission manner. The motor is fixedly mounted on the frame 1 and connected to the screw through a gear box to drive the screw to rotate forward or reverse. When in use, the workbench 12 is switched between the punching station and the discharge station, so that the punching plate 11 is used to punch the leather at the punching station, and the leather to be punched is fixedly placed on the punching die base 2 described below at the discharge station away from the punching plate 11, or the punched leather is discharged from the punching die base 2.

[0023] As attached Figure 3 To Attachment Figure 5 As shown, a punching die base 2 is fixedly arranged on the workbench 12, a cavity is formed in the punching die base 2, a plurality of punching tubes 21 are arranged on the upper wall of the punching die base 2, a punching notch is formed at the upper end of the punching tube 21 and is connected to the cavity, and the cavity is connected to the first exhaust assembly through a first exhaust pipe (connected at 271 shown in the figure). The exhaust of the first exhaust assembly forms a vacuum in the cavity, and when punching, the debris retained in the punching tube 21 will enter the first exhaust pipe through the punching tube 21 and be sucked away by the first exhaust assembly, so that the debris can be collected during the punching process, avoiding the disadvantages of the prior art.

[0024] In order to achieve a better debris suction effect and avoid insufficient vacuum in the cavity due to factors such as the cavity being too large and being too far away from the first vacuum device 32, the cavity of the punching die base 2 is divided into an upper cavity 231 and a lower cavity 232 distributed one above and one below by a partition 22, the first vacuum pipe is connected to the lower cavity 232, the upper cavity 231 is connected to the second vacuum assembly through a second vacuum pipe (connected at 272 shown in the figure), and the second vacuum pipe is provided with a one-way valve; the partition 22 is provided with a plurality of holes 221, and the punching die base 2 is also provided with a closing plate 24, the closing plate 24 is arranged close to the lower surface of the partition 22 and has a plurality of door openings 241 arranged corresponding to the holes 221 of the partition 22, and the closing plate 24 has an open position and a closed position under the action of a pushing mechanism 26, specifically, the pushing mechanism is a cylinder, and the cylinder body of the cylinder is fixedly mounted on the workbench 12. When the closing plate 24 is in the open position, the hole 221 is connected with the door hole 241 to connect the upper chamber 231 and the lower chamber 232, and the one-way valve is closed to prevent the upper chamber 231 from connecting with the second air pumping component. When the closing plate 24 is in the closed position, the hole 221 is staggered with the door hole 241 to isolate the upper chamber 231 and the lower chamber 232, and the one-way valve is opened to connect the upper chamber 231 with the second air pumping component.

[0025] As attached Figure 6 As shown, the first air extraction assembly includes a first debris collection box 31 and a first air extraction device 32. The first debris collection box 31 is divided into a collection chamber 311 and an air extraction chamber 312 by a filter screen 33. The filter screen 33 has filter holes that allow air to pass through but prevent debris from passing through. The other end of the first air extraction pipe is connected (connected at 213 as shown in the figure) to the collection chamber 311, and the air extraction pipe of the first air extraction device 32 is connected to the air extraction chamber (connected at 214 as shown in the figure).

[0026] The structure of the second vacuum assembly is the same as that of the first vacuum assembly, and also includes a second debris collection box and a second vacuum device. The second debris collection box is divided into a collection chamber and a vacuum chamber by a filter net. One end of the second vacuum pipe is connected to the upper chamber 231, and the second end of the second vacuum pipe is connected to the collection chamber. The vacuum pipe of the second vacuum device is connected to the vacuum chamber, and the second vacuum device uses a vacuum pump with a stronger vacuum generating capacity than the first vacuum device 32.

[0027] The holes 221 and the door openings 241 are both long strip-shaped through holes, the length direction of each hole 221 and each door opening 241 is perpendicular to the pushing direction of the pushing mechanism, and the holes 221 and each door opening 241 are arranged at intervals along the pushing direction of the pushing mechanism.

[0028] The punching die base 2 is provided with guide holes on the opposite side walls, and the opposite ends of the closing plate 24 are provided with guide posts 242 corresponding to the guide holes, wherein a spring 25 is sleeved between the guide post 242 at one end and the punching die base 2, and one end of the spring 25 abuts against the inner side wall of the punching die base 2, and the other end abuts against the closing plate 24. Under the action of the spring 25, the closing plate 24 is in the open position, and under the action of the pushing mechanism, the closing plate 24 overcomes the action of the spring 25 and is in the closed position.

[0029] By utilizing the function of the closing plate 24, the lower chamber 232 can continuously generate a vacuum. During the brief moment of punching, the hole 221 and the door hole 241 are offset to isolate the upper chamber 231 from the lower chamber 232. The upper chamber 231 has a stronger negative pressure, which can not only better and more firmly adsorb the leather to the end of the punching tube 21, but also, after the punching is completed, the debris can be first adsorbed into the collection chamber of the second debris collection box.

[0030] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited thereto. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention are all equivalent replacement modes and are included in the protection scope of the present invention.

Claims

1. A leather punching and forming device, comprising a hydraulic press, the hydraulic press having a frame, a punching plate and a workbench arranged on the frame, the punching plate being able to move back and forth along the longitudinal direction towards or away from the workbench, characterized in that: A punching die base is fixedly arranged on the workbench, a cavity is formed in the punching die base, a plurality of punching tubes are arranged on the upper wall of the punching die base, punching cuts are formed at the upper ends of the punching tubes and are connected to the cavity, and the cavity is connected to the first exhaust assembly through the first exhaust pipe.

2. A leather punching and forming device according to claim 1, characterized in that: The cavity of the punching die base is divided into an upper cavity and a lower cavity distributed one above and one below by a partition, the first exhaust pipe is connected to the lower cavity, the upper cavity is connected to the second exhaust assembly through the second exhaust pipe, and the second exhaust pipe is provided with a one-way valve; the partition is provided with a plurality of holes, and the punching die base is also provided with a closing plate, the closing plate is arranged close to the lower surface of the partition and has a plurality of door holes arranged corresponding to the holes of the partition, the closing plate has an open position and a closed position under the action of a pushing mechanism, when the closing plate is in the open position, the holes are connected with the door holes to connect the upper cavity and the lower cavity, the one-way valve is closed to prevent the upper cavity from connecting with the second exhaust assembly, when the closing plate is in the closed position, the holes are staggered with the door holes to isolate the upper cavity and the lower cavity, the one-way valve is opened to connect the upper cavity with the second exhaust assembly.

3. A leather punching and forming device according to claim 2, characterized in that: The first vacuum assembly includes a first debris collection box and a first vacuum device. The first debris collection box is divided into a collection chamber and a vacuum chamber by a filter. The filter has filter holes that allow air to pass through but prevent debris from passing through. The other end of the first vacuum pipe is connected to the collection chamber, and the vacuum pipe of the first vacuum device is connected to the vacuum chamber.

4. A leather punching and forming device according to claim 2, characterized in that: The second exhaust assembly includes a second debris collection box and a second exhaust device. The second debris collection box is divided into a collection chamber and an exhaust chamber by a filter screen. The filter screen has filter holes that allow air to pass through but prevent debris from passing through. One end of the second exhaust pipe is connected to the upper chamber, and the second end of the second exhaust pipe is connected to the collection chamber. The exhaust pipe of the second exhaust device is connected to the exhaust chamber.

5. The leather punching and forming device according to claim 2, characterized in that: The holes and door openings are all long strip-shaped through holes, the length direction of each hole and each door opening is perpendicular to the pushing direction of the pushing mechanism, and the holes and each door opening are arranged at intervals along the pushing direction of the pushing mechanism.

6. The leather punching and forming device according to claim 5, characterized in that: The pushing mechanism is a cylinder, and the cylinder body of the cylinder is fixedly installed on the workbench.

7. The leather punching and forming device according to claim 2, characterized in that: The punching die base has guide holes on its opposite side walls, and the closing plate has guide posts at opposite ends corresponding to the guide holes, wherein a spring is sleeved between the guide post at one end and the punching die base, one end of the spring abuts against the inner side wall of the punching die base, and the other end abuts against the closing plate, under the action of the spring, the closing plate is in the open position, and under the action of the pushing mechanism, the closing plate overcomes the action of the spring and is in the closed position.

8. A leather punching and forming device according to any one of claims 1 to 7, characterized in that: The frame is provided with a transverse driving mechanism and a transverse guide rail, the workbench is installed on a guide block, the guide block is cooperatively connected with the transverse guide rail, the transverse driving mechanism connects the workbench so that it can slide back and forth along the direction of the transverse guide rail and has a punching station and a unloading station.

9. The leather punching and forming device according to claim 8, characterized in that: The transverse driving mechanism includes a motor, a screw rod and a nut seat, the nut seat is fixedly connected to the workbench, the nut seat is transmission-coordinatedly connected to the screw rod, the motor is fixedly mounted on the frame and connected to the screw rod through a gear box to drive the screw rod to rotate forward or reverse.

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