A feeding mechanism for punching sheet metal parts

Abstract

The utility model belongs to sheet metal part punching technical field, concretely for a kind of feeding mechanism for sheet metal part punching, including base, the top of base, intermittent rotation installation has conveyer belt, the upper surface of base is fixedly installed with the bracket of U shape above conveyer belt, two inner rollers are fixedly installed between the both sides of bracket, outer roller is rotatably installed on the outer surface of inner roller, multiple brush are fixedly installed on the surface of outer roller, multiple second air holes are opened between adjacent two brush, the inside of two inner rollers is fixedly installed with the air chamber that is inwardly inclined, first air hole is opened in the bottom of two air chambers, dust collector is fixedly installed between two outer rollers. Through inner roller, first air hole, outer roller, brush and second air hole etc. Setting, the surface of plate piece can be pretreated, so that sheet metal part is separated from dust, then cleaning is carried out again, metal scrap or impurity on the surface of sheet metal part can be removed, avoid secondary scratch or impurity press into hole wall precision, improve punching effect.

Description

Technical Field

[0001] This utility model belongs to the field of sheet metal punching technology, and in particular relates to a feeding mechanism for punching sheet metal parts. Background Technology

[0002] Sheet metal processing is a comprehensive cold working process for thin metal sheets, including shearing, punching / cutting / combined cutting, bending, welding, riveting, splicing, and forming. Its significant characteristic is that the thickness of the same part is consistent. Sheet metal parts are products processed by sheet metal technology. Sheet metal parts have the characteristics of light weight, high strength, electrical conductivity, low cost, and good mass production performance. They are widely used in electronics, communications, automotive industry, medical devices and other fields. Sheet metal parts need to be punched during processing.

[0003] For example, patent application CN202020785503.5 describes a feeding mechanism for punching sheet metal parts, including a frame, a drive mechanism fixedly connected inside the frame, and a support block inside the frame, which is connected to the drive mechanism. The top of the support block has a mounting groove, and a rotating rod is rotatably connected inside the mounting groove. A first thread and a second thread are fixedly connected to the outer wall of the rotating rod, and the first and second threads are arranged in opposite directions. Two symmetrically distributed clamping plates are provided on the outer surface of the top of the support block. This invention also includes a support block with rollers at the bottom inside the frame, which is connected to the drive mechanism on the frame. During operation, it can automatically feed sheet metal parts. The rollers improve the stability of the sheet metal parts during feeding, increasing work efficiency. The top of the support block has two clamping plates with rotating blocks at the bottom.

[0004] Existing technology can achieve automatic feeding of sheet metal parts through a roller-equipped support block and a drive mechanism on the frame, but there are still some shortcomings in its overall use: First, when sheet metal parts are being transported, dust and metal shavings in the workshop will adhere to the surface of the sheet metal parts. If the shavings are pressed into the hole wall, the burr height will exceed the standard, reducing product quality. Second, the generated iron powder will wear down the die cutting edge again, and the metal shavings adhering to the punch cutting edge will accelerate wear and affect its service life. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the present invention solves the technical problem of dust and metal debris adhering to the surface of sheet metal parts in the workshop, which affects the product quality during the punching process, and the metal debris will also adhere to the punch cutting edge again, reducing the service life.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a feeding mechanism for punching sheet metal parts, comprising a base, a conveyor belt intermittently rotatably mounted on the top of the base, a U-shaped bracket fixedly mounted above the conveyor belt on the upper surface of the base, two inner rollers fixedly mounted between the two sides of the bracket, an outer roller rotatably mounted on the outer surface of the inner rollers, the two outer rollers rotating relative to each other, a plurality of brushes fixedly mounted on the surface of the outer rollers, a plurality of second air holes opened between two adjacent brushes, an inwardly inclined air chamber fixedly mounted inside each of the two inner rollers, a first air hole opened at the bottom of the two air chambers, the second air holes coinciding with the first air holes when the outer rollers rotate, and a vacuum cleaner fixedly mounted between the two outer rollers.

[0007] Optionally, a toothed ring is fixedly mounted on the outer side of the outer roller, and a rotating gear meshes with the surface of the toothed ring.

[0008] Optionally, the conveyor belt shaft passes through the base and is rotatably engaged, and a ratchet is also fixedly installed thereon. A turntable for driving the ratchet is rotatably installed on the outside of the ratchet.

[0009] Optionally, a U-shaped mounting bracket is fixedly installed on the upper surface of the base, and an industrial camera is fixedly installed on the lower surface of the mounting bracket.

[0010] Optionally, the conveyor belt has material troughs on both sides of the upper surface of the base, and a push plate is slidably installed inside one of the material troughs.

[0011] Optionally, a feed trough for use with a conveyor belt is fixedly installed on one side of the base. The feed trough is inclined downward and has a parallel opening at the bottom. A base plate is rotatably installed at the bottom of the feed trough.

[0012] Optionally, a baffle is fixedly installed between the two side plates at the bottom end of the feed trough, and clamping plates are slidably installed on both sides of the bottom plate.

[0013] Optionally, a punch head is slidably mounted on the top of the base plate.

[0014] In summary, compared with existing technologies, the beneficial effects of this solution are as follows: (1) This utility model can pre-treat the surface of the sheet metal by setting up an inner roller, a first air hole, an outer roller, a brush and a second air hole, so that the sheet metal is separated from the dust. Then it can be cleaned to remove metal chips or impurities from the surface of the sheet metal, avoid secondary scratches or impurities being pressed into the hole wall, and improve the punching effect. (2) This utility model is equipped with ratchet, conveyor belt, baffle, base plate and feed chute, etc., which can intermittently convey sheet metal parts, thereby enabling individual feeding and fixing, improving the feeding effect. At the same time, it can punch holes in the gap of conveying, improving the punching effect. It can also realize automatic unloading function, realize automated punching of sheet metal parts, and greatly improve work efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the rear view structure of this utility model; Figure 3 This is a top view of the structure of this utility model; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at point AA; Figure 5 for Figure 4 Enlarged structural diagram at point B in the diagram; Figure 6 for Figure 2 Enlarged structural diagram at point C; Figure 7 for Figure 1 Enlarged structural diagram at point D in the diagram; Figure 8 for Figure 1 A magnified structural diagram at point E in the diagram.

[0016] In the diagram: Base 10; Conveyor belt 11; First motor 12; Turntable 13; Ratchet 14; Mounting frame 15; Industrial camera 16; Feed trough 17; First electric pusher cylinder 18; Push plate 19; Support 20; Inner roller 21; Air pump 22; Air chamber 23; First air hole 24; Outer roller 25; Brush 26; Second air hole 27; Vacuum cleaner 28; Second motor 29; Gear 30; Gear ring 31; Feed trough 32; Support frame 33; Hydraulic cylinder 34; Punch head 35; Baffle 36; Base plate 37; Second electric pusher cylinder 38; Third electric pusher cylinder 39; Clamping plate 40. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] refer to Figure 1 and Figure 6The system includes a base 10, a conveyor belt 11 on the top of the base 10, a first motor 12 fixedly mounted on one side of the base 10, a turntable 13 fixedly mounted on the output end of the first motor 12, the shaft of the conveyor belt 11 passing through the base 10 and rotating in cooperation with it, a ratchet 14 fixedly mounted on one end of the conveyor belt 11 that passes through the shaft of the base 10, and a locking pin fixedly mounted on the surface of the turntable 13 to cooperate with the ratchet 14. In use, the output end of the first motor 12 drives the turntable 13 connected to it to rotate. When the turntable 13 rotates, it drives the ratchet 14 to rotate intermittently through the locking pin, thereby driving the conveyor belt 11 to rotate intermittently as well. Sheet metal parts are placed on the surface of the conveyor belt 11, so that the sheet metal parts are transported intermittently, which facilitates individual feeding during subsequent stamping and facilitates automated punching operations.

[0019] Further reference Figure 1 and Figure 2 A U-shaped mounting bracket 15 is fixedly installed on the upper surface of the base 10, and an industrial camera 16 is fixedly installed on the lower surface of the mounting bracket 15. The industrial camera 16 is existing technology and is a core component of the machine vision system. It is mainly used in industrial inspection, automation control and other fields to detect whether there are defects in the appearance of sheet metal parts. It will not be described in detail here. Material troughs 17 are provided on both sides of the conveyor belt 11 on the upper surface of the base 10. A first electric push cylinder 18 is fixedly installed on one side of the base 10. A push plate 19 is fixedly installed at the output end of the first electric push cylinder 18. When the sheet metal parts are intermittently conveyed, the industrial camera 16 performs visual inspection on them. If the industrial camera 16 detects a defect in the sheet metal parts, the sheet metal parts are conveyed between the two material troughs 17. Since the conveyor belt 11 rotates intermittently, the sheet metal parts can stop moving. Then, the first electric push cylinder 18 pushes the push plate 19 forward, and the sheet metal parts are pushed forward by the push plate 19 and pushed out of the conveyor belt 11 through the material troughs 17. This avoids the stamping of unqualified sheet metal parts, which would affect product quality. It should be noted that a collection box can be set outside the material trough 17 on the side away from the first electric push cylinder 18 to collect unqualified sheet metal parts for recycling.

[0020] Further reference Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7A U-shaped bracket 20 is fixedly installed on one side of the material trough 17 on the upper surface of the base 10. An inner roller 21 is fixedly installed between the two sides of the bracket 20. An outer roller 25 is rotatably installed on the outer surface of the inner roller 21. The two outer rollers 25 rotate in the center. Multiple brushes 26 are fixedly installed on the outer surface of the outer roller 25, and a toothed ring 31 is fixedly installed on one side of the outer roller 25. A second motor 29 is fixedly installed on one side of the bracket 20. A gear 30 that meshes with the toothed ring 31 is fixedly installed at the output end of the second motor 29. In use, the second motor 29 rotates and drives the gear 30 connected to it to rotate, thereby driving the meshing toothed ring 31 to rotate, which in turn drives the outer roller 25 to rotate. The rotation of the outer roller 25 drives the brushes 26 to rotate, cleaning the stamping surface of the sheet metal parts, removing metal chips or impurities from the surface, avoiding secondary scratches or impurities being pressed into the hole wall, and improving the punching effect. Through the intermittent transmission of the sheet metal parts, the brushes 26 have sufficient time to remove dust, greatly improving the cleaning effect.

[0021] Further reference Figure 1 and Figure 5 An air pump 22 is fixedly installed on the outer side of the bracket 20. An inwardly inclined air chamber 23 is fixedly installed inside the two inner rollers 21. The air chamber 23 is connected to the air inlet of the air pump 22. Multiple first air holes 24 are opened at the bottom of the air chamber 23. Multiple second air holes 27 are opened on the surface of the outer roller 25 between two adjacent brushes 26. The second air holes 27 cooperate with the first air holes 24. When the brushes 26 rotate, they can overlap with the first air holes 24. During sheet metal cleaning, the air pump 22 pumps air into the air chamber 23. The internal inflation causes gas to be ejected from the first air hole 24. When the brush 26 rotates and coincides with the first air hole 24, it can blow the dust on the surface of the sheet metal parts inward, so that the brush 26 pre-treats the dust before cleaning and separates it from the surface of the sheet metal parts, thereby improving the cleaning effect. A vacuum cleaner 28 is also fixedly installed on the upper surface of the bracket 20. The suction end of the vacuum cleaner 28 passes through the bracket 20 and is located between the two outer rollers 25, so that it can suck up the blown dust, greatly improving the dust removal effect.

[0022] Further reference Figure 1 and Figure 8A downwardly inclined feed chute 32 is fixedly installed on one side of the base 10. The bottom end of the feed chute 32 is horizontal, and the end of the feed chute 32 is open. A baffle 36 is fixedly installed at the end of the feed chute 32. A third electric push cylinder 39 is fixedly installed on both sides of the end of the feed chute 32. The output end of the third electric push cylinder 39 slides through the feed chute 32 and is fixedly installed with a clamping plate 40. A base plate 37 is rotatably installed at the bottom of the end of the feed chute 32. The initial state of the base plate 37 is horizontal. The feed trough 32 is connected. When the sheet metal part is conveyed out of the conveyor belt 11, it falls into the surface of the inclined feed trough 32. Due to gravity, the sheet metal part slides downward, causing it to slide into the upper surface of the bottom plate 37. At this time, the baffle 36 blocks it. The baffle 36 is made of rubber. Due to the damping properties of rubber, the bottom plate 37 can be prevented from rebounding. At this time, the third electric push cylinder 39 pushes the two clamping plates 40 to move in the center, clamping and fixing the sheet metal part from both sides, which facilitates the subsequent punching work.

[0023] Further reference Figure 1 and Figure 8 A support frame 33 is fixedly installed on one side of the base 10. A hydraulic cylinder 34 is fixedly installed on the top of the support frame 33. The output end of the hydraulic cylinder 34 slides through the support frame 33 and is fixedly installed with a punch head 35. The surface of the base plate 37 has punching holes corresponding to the punch head 35. A second electric push cylinder 38 is also fixedly installed on one side of the base 10. The second electric push cylinder 38 is rotatably connected to the lower surface of the base plate 37. After the sheet metal part is fixed, the hydraulic cylinder 34 pushes the punch head 35 downward to punch holes in the sheet metal part, utilizing intermittent... Punching is performed during the feeding gap to improve the performance. The waste material from punching is discharged from the punching hole. After punching is completed, the second electric push cylinder 38 pulls the base plate 37 downward, causing the base plate 37 to tilt downward, so that the punched sheet metal part slides downward for unloading. This achieves automatic unloading without the need for manual unloading by the staff, which greatly improves work efficiency. It should be noted that in actual production, a corresponding sheet metal positioning detector will be set on the outside of the stamping structure to determine whether the sheet metal part has moved into place, thereby ensuring the effect and efficiency of stamping.

[0024] Finally, it should be noted that the feeding mechanism for punching sheet metal parts in this utility model needs to protect the various mechanical structures and related motion logic in this solution. Therefore, it does not elaborate on the various sensors, detectors, and driving components required for the actual operation of the specific mechanical structures. However, for those skilled in the art, various control systems and electrical connection methods, including various electrical components and driving components, can be completed using conventional technical means. As long as the beneficial effects or the specific actions during the above work can be achieved, they can be implemented. This solution does not impose too many restrictions.

[0025] Furthermore, the first motor 12, industrial camera 16, first electric push cylinder 18, air pump 22, vacuum cleaner 28, second motor 29, hydraulic cylinder 34, second electric push cylinder 38, and third electric push cylinder 39 of the feeding mechanism for punching sheet metal parts in this utility model are all purchased from the market. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from technical personnel in this field.

[0026] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0027] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the conception outlined herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A feeding mechanism for punching sheet metal parts, comprising a base (10), characterized in that, A conveyor belt (11) is intermittently rotated on the top of the base (10). A U-shaped bracket (20) is fixedly installed on the upper surface of the base (10) above the conveyor belt (11). Two inner rollers (21) are fixedly installed between the two sides of the bracket (20). An outer roller (25) is rotatably installed on the outer surface of the inner roller (21). The two outer rollers (25) rotate relative to each other. Multiple brushes (26) are fixedly installed on the surface of the outer rollers (25). Multiple second air holes (27) are opened between two adjacent brushes (26). An inwardly inclined air chamber (23) is fixedly installed inside the two inner rollers (21). A first air hole (24) is opened at the bottom of the two air chambers (23). When the outer rollers (25) rotate, the second air holes (27) coincide with the first air holes (24). A vacuum cleaner (28) is fixedly installed between the two outer rollers (25).

2. The feeding mechanism for punching sheet metal parts according to claim 1, characterized in that, A toothed ring (31) is fixedly installed on the outer side of the outer roller (25), and a rotating gear (30) meshes on the surface of the toothed ring (31).

3. The feeding mechanism for punching sheet metal parts according to claim 1, characterized in that, The shaft of the conveyor belt (11) passes through the base (10) and rotates in coordination with it. A ratchet (14) is also fixedly installed thereon. A turntable (13) for driving the ratchet (14) is rotatably installed on the outside of the ratchet (14).

4. A feeding mechanism for punching sheet metal parts according to claim 3, characterized in that, A U-shaped mounting bracket (15) is fixedly installed on the upper surface of the base (10), and an industrial camera (16) is fixedly installed on the lower surface of the mounting bracket (15).

5. A feeding mechanism for punching sheet metal parts according to claim 1, characterized in that, The conveyor belt (11) has material troughs (17) on both sides of the upper surface of the base (10), and a push plate (19) is slidably installed inside one of the material troughs (17).

6. A feeding mechanism for punching sheet metal parts according to claim 5, characterized in that, A feed trough (32) for use with the conveyor belt (11) is fixedly installed on one side of the base (10). The feed trough (32) is inclined downward and has a parallel opening at the bottom. A base plate (37) is rotatably installed at the bottom of the feed trough (32).

7. A feeding mechanism for punching sheet metal parts according to claim 6, characterized in that, A baffle (36) is fixedly installed between the two side plates at the bottom end of the feed trough (32), and a clamping plate (40) is slidably installed on both sides of the bottom plate (37).

8. A feeding mechanism for punching sheet metal parts according to claim 7, characterized in that, A punch head (35) is slidably mounted on the top of the base plate (37).

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