Burr-free punching equipment for metal thin part

Abstract

The invention relates to the field of metal thin part machining equipment, in particular to metal thin part burr-free punching equipment which comprises a supporting device used for supporting. When burr-free punching is carried out on a metal thin workpiece, the two burr removing devices can synchronously move downwards along with punching of a punching tool through meshing of a first rack, a second rack and a transmission gear; the two sets of positioning sliding seats can elastically limit the burr removing tools at the position of a hole groove in the upper portion of the metal thin workpiece through the spring clamping shafts, meanwhile, the upper burr removing tool and the lower burr removing tool can completely cover burrs inside and outside the hole groove of the metal thin workpiece, and therefore the two burr removing tools can synchronously remove various burrs in the hole groove. The synchronous punching efficiency of the equipment on the metal thin workpiece is effectively improved, meanwhile, the cleanliness of all-directional removal of burrs in a hole groove of the metal thin workpiece is improved, and then the machining precision of the hole groove after punching is completed is improved.

Description

Technical Field

[0001] This invention relates to the field of metal thin-part punching equipment, specifically a burr-free metal thin-part punching equipment. Background Technology

[0002] Metal thin-part punching equipment is a type of machinery specifically designed for processing holes in thin metal sheets. Common thin metal parts include stainless steel sheets, aluminum sheets, and galvanized sheets. Metal thin-part punching equipment is widely used in industries such as electronics, automobiles, home appliances, building decoration, and filter materials.

[0003] In the prior art, such as CN115301824A, a sheet stamping equipment and a sheet stamping method are disclosed. The sheet stamping equipment includes a stamping device, a transfer device, and a pressing device. The stamping device is used to stamp the workpiece to form a sheet stamped part with a contour shape consistent with the target product. The thickness of the sheet stamped part is less than or equal to a preset value. The transfer device is used to transfer the sheet stamped part from the stamping device to the position of the pressing device. The pressing device includes an upper die and a lower die arranged vertically. The relative surfaces of the upper die and the lower die are parallel to each other. The sheet stamped part is located between the upper die and the lower die. The upper die and the lower die approach each other and flatten it to remove burrs from the edge of the sheet stamped part to obtain the target product. Thus, the present invention reduces the space occupied by the equipment by integrating the stamping device, the transfer device, and the pressing device into one unit, and reduces the time required by eliminating the need for other transfer processes.

[0004] Although the above-mentioned equipment can flatten and remove burrs from the openings of thin metal parts, the burrs still remain. Furthermore, the equipment is not convenient for removing burrs simultaneously from both the top and bottom surfaces of the thin metal parts, and this removal operation is not convenient for simultaneous removal in conjunction with the punching operation. This reduces the accuracy and efficiency of the equipment in processing thin metal parts. Therefore, a burr-free punching device for thin metal parts is needed to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a burr-free punching device for thin metal parts to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a burr-free punching device for thin metal parts, comprising a support device for support, two sets of transmission gears rotatably engaged at the center of the inner end face of the support device, a thin metal workpiece slidably disposed at the center of the inner end face of the support device, and two sets of linear slide rails disposed on the lower end face of the support device near the transmission gears.

[0007] A punching device is fixedly installed on the front of the upper end face of the support device, and a servo motor is provided at the middle of the side end face of the punching device. The punching device is used to punch the thin metal workpiece at equal intervals.

[0008] The burr removal device comprises two sets. The upper burr removal device is fixedly connected to the rear of the punching device, and the lower burr removal device is slidably disposed on the lower part of the support device. Two sets of linear sliders are provided at the front of the burr removal device. Two sets of second racks are provided at the front of the lower end face of the upper burr removal device, and two sets of first racks are provided at the rear of the upper end face of the lower burr removal device.

[0009] Preferably, the punching device includes two sets of support guides for support and limiting. Two sets of linear sliding shafts are provided on the inner end face of each of the two sets of support guides. A punching guide is slidably engaged with the inner end face of the two sets of support guides through the linear sliding shafts. A return spring is provided at each of the four corners of the lower end face of the punching guide. A punching tool is detachably provided at the center of the lower end face of the punching guide. A transmission shaft is rotatably engaged at the middle of the inner end face of the two sets of support guides. Two sets of pressing cams are provided on the outer end face of the transmission shaft.

[0010] Preferably, the burr removal device includes a positioning slide for support, a driven gear is rotatably engaged at the center of the inner end face of the positioning slide, a spring retainer is fixedly disposed at the center of the lower end face of the driven gear, and a burr removal tool is fixedly disposed at the center of the lower end face of the spring retainer. A stepper motor is disposed near the front of the upper end face of the positioning slide, and a drive gear is disposed at the output end of the stepper motor.

[0011] Preferably, the support device includes a support slide, a feeding guide groove is provided at the center of the upper end face of the support slide, and a processing guide groove is provided at the center of the inner end face of the support slide. Alignment slots are provided on both sides of the inner end face of the support slide near the processing guide grooves. Two sets of limiting hook plates are provided on the lower end face of the support slide opposite the rear of the alignment slots.

[0012] Preferably, the burr removal device located at the lower part is adapted to the linear slide rail by the linear slider and then slidably engaged with the lower end face of the support device, which can effectively improve the stability of the vertical displacement of the burr removal device located at the lower part.

[0013] Preferably, the linear slide rail is fixedly connected to the limiting hook plate, and the hook-shaped part of the limiting hook plate is pressed against the bottom of the positioning slide. The limiting hook plate can limit the bottom of the lower positioning slide to prevent the burr removal device from falling off.

[0014] Preferably, both the first rack and the second rack are meshed with the central transmission gear. The upper and lower sets of burr removal devices mesh with the transmission gear through the first rack and the second rack, thereby moving centripetally toward the thin metal workpiece. When the upper burr removal device moves downward with the punching hole of the stamping guide, the upper burr removal device can drive the upper part of the lower burr removal device through the meshing of the first rack, the second rack and the transmission gear, thereby improving the efficiency of burr removal from the holes and grooves of the thin metal workpiece.

[0015] Preferably, the pressing cam is elastically connected to the upper end face of the stamping guide via the return spring, the driven gear is meshed with the driving gear, and both the upper and lower sets of deburring tools are connected to the inside and side of the punched hole of the thin metal workpiece. When punching the thin metal workpiece, the four sets of return springs can provide sufficient elasticity to the stamping guide, so that the stamping guide can fit against the bottom of the pressing cam, improving the stability of the punching tool guiding the punching. At the same time, when deburring the hole groove completed by punching the thin metal workpiece, the upper and lower sets of deburring tools can remove burrs from the inside of the hole groove and the upper opening edge in all directions.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This invention, by setting up a burr removal device, enables two sets of burr removal devices to mesh with the first and second racks and the transmission gear during burr-free punching of thin metal workpieces. These devices move synchronously downwards with the punching tool, allowing two sets of positioning slides to elastically limit the burr removal tool at the upper part of the metal workpiece's slot via spring clips. Simultaneously, the upper and lower sets of burr removal tools completely cover the burrs inside and outside the slot of the metal workpiece. This allows the stepper motor to drive the two sets of burr removal tools to synchronously remove various burrs from the slot, effectively improving the efficiency of synchronous punching of thin metal workpieces and enhancing the cleanliness of omnidirectional burr removal from the slot, thereby improving the machining accuracy of the slot after punching.

[0018] 2. By setting up a punching device, the present invention enables the servo motor to drive the pressing cam to rotate cyclically through the transmission shaft when punching thin metal workpieces. This allows the pressing cam to be pressed against the elastic roller of the punching guide, thereby driving the punching guide and the punching cutter to perform uninterrupted punching operations on the equidistantly conveyed thin metal workpieces at a fixed frequency. This effectively improves the efficiency and stability of the equipment in punching thin metal workpieces. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the main body of the present invention;

[0021] Figure 2 For the present invention Figure 1 A magnified view of a section at point I;

[0022] Figure 3 This is a side view of the main body of the invention;

[0023] Figure 4 This is a schematic diagram of the punching device of the present invention;

[0024] Figure 5 This is a side view of the punching device of the present invention;

[0025] Figure 6 This is an exploded view of the burr removal device of the present invention;

[0026] Figure 7 This is a schematic diagram of the burr removal device of the present invention;

[0027] Figure 8 This is a schematic diagram of the support device of the present invention.

[0028] In the diagram: 1-Thin metal workpiece, 2-Punching device, 3-Deburring device, 4-Support device, 5-Servo motor, 6-First rack, 7-Linear slider, 8-Linear slide rail, 9-Second rack, 10-Transmission gear, 21-Transmission clasp, 22-Punching tool, 23-Return spring, 24-Punching guide seat, 25-Linear slide shaft, 26-Support guide seat, 27-Pressure cam, 31-Positioning slide seat, 32-Driven gear, 33-Spring clasp, 34-Deburring tool, 35-Drive gear, 36-Stepper motor, 41-Feeding guide groove, 42-Machining guide groove, 43-Support slide seat, 44-Limiting hook plate, 45-Alignment slot. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0031] The invention will be further described below with reference to the accompanying drawings.

[0032] Example 1

[0033] Please see Figure 1-8 One embodiment of the present invention provides a burr-free punching device for thin metal parts, comprising a support device 4 for support, two sets of transmission gears 10 rotatably engaged at the middle of the inner end face of the support device 4, a thin metal workpiece 1 slidably disposed at the middle of the inner end face of the support device 4, and two sets of linear slide rails 8 disposed on the lower end face of the support device 4 near the transmission gears 10.

[0034] The punching device 2 is fixedly installed on the front of the upper end face of the support device 4, and a servo motor 5 is provided at the middle of the side end face of the punching device 2. The punching device 2 is used to punch thin metal workpiece 1 at equal intervals.

[0035] The burr removal device 3 has two sets. The upper burr removal device 3 is fixedly connected to the rear of the punching device 2. The lower burr removal device 3 is slidably disposed at the lower part of the support device 4. Two sets of linear sliders 7 are provided at the front of the burr removal device 3. Two sets of second racks 9 are provided at the front of the lower end face of the upper burr removal device 3. Two sets of first racks 6 are provided at the rear of the upper end face of the lower burr removal device 3.

[0036] The punching device 2 includes two sets of support guides 26 for support and limiting. Two sets of linear slide shafts 25 are provided on the inner end face of each of the two sets of support guides 26. The inner end face of the two sets of support guides 26 is slidably engaged with a punching guide 24 through the linear slide shafts 25. A return spring 23 is provided at each of the four corners of the lower end face of the punching guide 24. A punching cutter 22 is detachably provided at the center of the lower end face of the punching guide 24. A transmission shaft 21 is rotatably engaged at the middle of the inner end face of the two sets of support guides 26. Two sets of pressing cams 27 are provided on the outer end face of the transmission shaft 21.

[0037] The burr removal device 3 includes a positioning slide 31 for support. A driven gear 32 is rotatably engaged at the center of the inner end face of the positioning slide 31. A spring retainer 33 is fixedly installed at the center of the lower end face of the driven gear 32. A burr removal tool 34 is fixedly installed at the center of the lower end face of the spring retainer 33. A stepper motor 36 is installed near the front of the upper end face of the positioning slide 31. A drive gear 35 is installed at the output end of the stepper motor 36.

[0038] The support device 4 includes a support slide 43. A feeding guide groove 41 is provided at the center of the upper end face of the support slide 43, and a processing guide groove 42 is provided at the center of the inner end face of the support slide 43. Alignment grooves 45 are provided on both sides of the inner end face of the support slide 43 near the processing guide grooves 42. Two sets of limiting hook plates 44 are provided on the lower end face of the support slide 43 directly opposite the rear of the alignment grooves 45.

[0039] The burr removal device 3 located at the bottom is adapted to the linear slide rail 8 via the linear slider 7 and is slidably engaged with the lower end face of the support device 4, which can effectively improve the stability of the vertical displacement of the burr removal device 3 located at the bottom.

[0040] The linear slide rail 8 is fixedly connected to the limiting hook plate 44, and the hook-shaped part of the limiting hook plate 44 is pressed against the bottom of the positioning slide 31. The limiting hook plate 44 can limit the bottom of the lower positioning slide 31 to prevent the burr removal device 3 from falling off.

[0041] Both the first rack 6 and the second rack 9 are meshed with the central transmission gear 10. The upper and lower sets of burr removal devices 3 are meshed with the transmission gear 10 through the first rack 6 and the second rack 9, and thus move centripetally toward the thin metal workpiece 1. When the upper burr removal device 3 moves down with the punching guide 24, the upper burr removal device 3 can drive the upper part of the lower burr removal device 3 through the meshing of the first rack 6, the second rack 9 and the transmission gear 10, thereby improving the efficiency of burr removal from the holes and grooves of the thin metal workpiece 1.

[0042] The pressing cam 27 is elastically connected to the upper end face of the stamping guide 24 through the return spring 23. The driven gear 32 is meshed with the driving gear 35. The upper and lower sets of deburring tools 34 are both connected to the inside and side of the punching hole of the thin metal workpiece 1. When punching the thin metal workpiece 1, the four sets of return springs 23 can provide sufficient elasticity to the stamping guide 24, so that the stamping guide 24 can fit against the bottom of the pressing cam 27, improving the stability of the punching tool 22 guiding the punching. At the same time, when deburring the hole groove of the thin metal workpiece 1, the upper and lower sets of deburring tools 34 can remove burrs from the inside of the hole groove and the upper opening edge in all directions.

[0043] Working Principle: Before use, the operator can position the equidistant feeding module of the thin metal workpiece 1 at the front of the support slide 43. The feeding module is existing technology, which can intermittently and equidistantly guide the thin metal workpiece 1 to the bottom of the punching device 2 and the deburring device 3, facilitating subsequent punching and simultaneous deburring operations on the thin metal workpiece 1. During the punching operation, the operator can start the servo motor 5. At this time, the servo motor 5 can drive the transmission shaft 21 to rotate, and the transmission shaft 21 can drive the two sets of pressing cams 27 to rotate. The two sets of pressing cams 27 can drive the stamping guide 24 to elastically move up and down inside the linear slide 25, so that the stamping guide 24 can drive the punching tool 22 to perform equidistant punching operations on the thin metal workpiece 1. When deburring the punched slots simultaneously, the operator can start the upper and lower sets of stepper motors 36. When the punching guide 24 moves down to punch, the punching guide 24 can drive the upper positioning slide 31 to move down. At this time, the upper positioning slide 31 can drive the second rack 9 to move down. When the second rack 9 moves down, it can mesh with the transmission gear 10, and then drive the two sets of first racks 6 at the bottom to move up in the opposite direction. This allows the upper and lower sets of positioning slides 31 to move toward the slots of the thin metal workpiece 1 until the upper and lower sets of deburring tools 34 are fully elastically limited and inserted into the slots of the thin metal workpiece 1. At this time, the stepper motor 36 can drive the driven gear 32 and the deburring tool 34 to rotate through the driving gear 35. The deburring tool 34 can remove various burrs inside the slots and at the openings.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A burr-free punching device for thin metal parts, comprising a support device (4) for support, two sets of transmission gears (10) rotatably engaged at the middle of the inner end face of the support device (4), a thin metal workpiece (1) slidably disposed at the middle of the inner end face of the support device (4), and two sets of linear slide rails (8) disposed on the lower end face of the support device (4) near the transmission gears (10), characterized in that: Punching device (2), the punching device (2) is fixedly installed on the front of the upper end face of the support device (4), and a servo motor (5) is provided at the middle of the side end face of the punching device (2). The punching device (2) is used to punch the thin metal workpiece (1) at equal intervals. The burr removal device (3) is provided in two sets. The upper burr removal device (3) is fixedly connected to the rear of the punching device (2). The lower burr removal device (3) is slidably disposed at the lower part of the support device (4). Two sets of linear sliders (7) are provided at the front of the burr removal device (3). Two sets of second racks (9) are provided at the front of the lower end face of the upper burr removal device (3). Two sets of first racks (6) are provided at the rear of the upper end face of the lower burr removal device (3).

2. The burr-free punching equipment for thin metal parts according to claim 1, characterized in that: The punching device (2) includes two sets of support guides (26) for support and limiting. Two sets of linear slide shafts (25) are provided on the inner end face of each of the two sets of support guides (26). The inner end face of the two sets of support guides (26) is slidably connected to the stamping guide (24) through the linear slide shafts (25). The four corners of the lower end face of the stamping guide (24) are provided with return springs (23). A punching tool (22) is detachably provided at the center of the lower end face of the stamping guide (24). A transmission shaft (21) is rotatably connected at the middle of the inner end face of the two sets of support guides (26). Two sets of pressing cams (27) are provided on the outer end face of the transmission shaft (21).

3. The burr-free punching equipment for thin metal parts according to claim 2, characterized in that: The burr removal device (3) includes a positioning slide (31) for support. A driven gear (32) is rotatably engaged at the middle of the inner end face of the positioning slide (31). A spring clip (33) is fixedly arranged at the center of the lower end face of the driven gear (32). A burr removal tool (34) is fixedly arranged at the center of the lower end face of the spring clip (33). A stepper motor (36) is arranged near the front of the upper end face of the positioning slide (31). A drive gear (35) is arranged at the output end of the stepper motor (36).

4. The burr-free punching equipment for thin metal parts according to claim 3, characterized in that: The support device (4) includes a support slide (43). A feeding guide groove (41) is provided at the center of the upper end face of the support slide (43), and a processing guide groove (42) is provided at the middle of the inner end face of the support slide (43). Alignment grooves (45) are provided on both sides of the inner end face of the support slide (43) near the processing guide groove (42). Two sets of limiting hook plates (44) are provided on the lower end face of the support slide (43) opposite to the rear of the alignment groove (45).

5. The burr-free punching equipment for thin metal parts according to claim 4, characterized in that: The burr removal device (3) located at the bottom is adapted to the linear slide rail (8) via the linear slider (7) and thus slidably engaged with the lower end face of the support device (4).

6. The burr-free punching equipment for thin metal parts according to claim 4, characterized in that: The linear slide rail (8) is fixedly connected to the limiting hook plate (44), and the hook-shaped part of the limiting hook plate (44) is pressed against the bottom of the positioning slide (31).

7. The burr-free punching equipment for thin metal parts according to claim 4, characterized in that: The first rack (6) and the second rack (9) are both meshed with the transmission gear (10) in the middle. The upper and lower sets of burr removal devices (3) mesh with the transmission gear (10) through the first rack (6) and the second rack (9) and then move towards the metal thin workpiece (1) in a centripetal displacement.

8. The burr-free punching equipment for thin metal parts according to claim 4, characterized in that: The pressing cam (27) is elastically connected to the upper end face of the stamping guide (24) through the return spring (23), the driven gear (32) is meshed with the driving gear (35), and the upper and lower sets of burr removal tools (34) are both connected to the inside and side of the punch hole of the thin metal workpiece (1).

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