Light-load blanking device

Abstract

The invention discloses a light-load blanking device which comprises a punching machine, a pressing block and a mounting base are arranged on the punching machine, a lower die is fixed to the mounting base, an upper die is arranged on the pressing block and comprises a fixing plate, a guide sleeve is arranged on the fixing plate, a guide column is arranged on the lower die, and a supporting plate is arranged below the fixing plate. A plate right edge punching part, a plate pressing and punching part and a plate left edge punching part are arranged on the bottom surface of the supporting plate, the plate pressing and punching part comprises a guide block, a circular guide hole is formed in the supporting plate, a punching column is inserted into each first insertion hole, a limiting block is arranged at the top end of each punching column, a blind hole is formed in the top surface of each circular guide hole, and the plate right edge punching part and the plate left edge punching part are arranged in the blind hole. Compression springs are arranged between the top faces of the blind holes and the top faces of the limiting blocks, and a longitudinal punching and falling channel hole is formed in the lower die. A wave type grading blanking mode is adopted, energy consumption can be reduced, the precision and machining efficiency of blanking finished products are improved, the production cost is greatly reduced, and the device is worthy of application and popularization.

Description

Technical Field

[0001] The invention relates to the field of tooling, in particular to a light-load punching device. Background Art

[0002] Blanking is a stamping process that uses a die to separate part of the material or process parts from another part of the material, process (process) parts or waste. Blanking is a general term for separation processes such as shearing, blanking, punching, notching, notching, cutting, chiseling, trimming, tongue cutting, cutting, and trimming.

[0003] During the production process of the switch cabinet shell, the plate needs to be cut and punched. Traditionally, cutting and punching are carried out simultaneously. This method will cause great resistance to punching, requiring a large specification of the punching machine and greater pressure to punch out the finished product, which consumes more power. In addition, the finished product punched out by this synchronous punching will have local deformation (the punching stress is concentrated on the plate in a short time), and a flattening process needs to be added in the subsequent processing. This will not only greatly increase the complexity of the finished product processing and increase energy consumption, but also greatly increase the production cost of the product, which is not conducive to large-scale and efficient utilization.

[0004] Chinese utility model patent CN 211191590 U discloses a plate blanking device, which includes a main body, an electromagnetic slide rail is installed inside the main body, a lifting rod is connected to the outside of the electromagnetic slide rail, a card slot is opened inside the lifting rod, an auxiliary mechanism is installed at the output end of the lifting rod, the auxiliary mechanism includes a mounting plate inside, a blade plate is installed on the outside of the mounting plate, an elastic tube is installed inside the mounting plate, a card block is connected to the outside of the elastic tube, a spring is connected to the outside of the mounting plate, a stop block is connected to the output end of the spring, and a fixing mechanism is installed inside the main body. The device is synchronous, which is not conducive to energy saving and reducing production costs. Summary of the invention

[0005] The present invention aims to solve the shortcomings of the above-mentioned prior art and provide a segmented punching and punching device that requires small equipment, has low power consumption, will not cause local deformation of the finished product, and has low production cost, thereby meeting the needs for low power consumption, high precision and low production cost for sheet metal punching.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: the light-load blanking device comprises a punching machine, a pressing block and a mounting seat are arranged on the punching machine, a lower die is fixed on the mounting seat, an upper die is mounted on the pressing block, the upper die comprises a fixed plate fixed to the bottom surface of the pressing block, guide sleeves are fixed to the four corners of the fixed plate, guide columns matching the guide sleeves are fixed to the four corners of the lower die, a support plate is fixed below the fixed plate, a plate right edge punching portion, a plate pressing punching portion and a plate left edge punching portion are fixed to the bottom surface of the support plate, the plate pressing punching portion comprises a group of guide blocks fixed between the fixed plate and the support plate, a group of first plugging holes are opened on the support plate, each guide block has a circular guide hole with a cross-section larger than that of the first plugging holes, each first plugging hole is plugged with a blanking column, and each blanking column is connected to each first plugging hole. The top ends of the columns are fixed with limit blocks which are respectively inserted into the circular guide holes. The top surfaces of the circular guide holes are provided with concave blind holes. Compression springs are respectively installed between the top surfaces of the blind holes and the top surfaces of the limit blocks. The lower die is provided with longitudinal punching channel holes which correspond to the shapes and positions of the punching parts of the right edge of the plate, the pressing punching parts of the plate and the punching parts of the left edge of the plate. The top surface of the lower die is fixed with plate positioning column blocks which are arranged in four corners. The inner contour formed by the plate positioning columns is a cone with a large outside and a small inside. The first distance between the bottom surface of the punching column and the bottom surface of the support plate is greater than the second distance between the bottom surface of the punching part of the right edge of the plate and the bottom surface of the support plate. The second distance between the bottom surface of the punching part of the right edge of the plate and the bottom surface of the support plate is greater than the third distance between the bottom surface of the punching part of the left edge of the plate and the bottom surface of the support plate. The fixed plate, guide sleeve, support plate, right edge punching part, plate pressing punching part, guide block, first plug hole, punching column, limit block, blind hole and compression spring here play the role of punching and punching the plate in wave-like stages. The required punching machine has low power and high quality of punched finished products. The lower die and longitudinal punching channel hole here play the role of dropping the punched and punched waste to the designated position. The plate positioning column block and cone here play the role of conveniently and quickly placing the blank plate into the plate positioning column block arranged in a square shape, which greatly improves the placement accuracy and efficiency of the blank plate. Rate; the first distance between the bottom surface of the punching column and the bottom surface of the support plate is greater than the second distance between the bottom surface of the punching part of the right edge of the plate and the bottom surface of the support plate, and the second distance between the bottom surface of the punching part of the right edge of the plate and the bottom surface of the support plate is greater than the third distance between the bottom surface of the punching part of the left edge of the plate and the bottom surface of the support plate. The effect is that when the edge of the blank plate is cut by the punching part of the right edge of the plate, the blank plate is first pressed by each punching column, and then cut, which can improve the cutting accuracy. When the edge of the blank plate is cut by the punching part of the left edge of the plate, the blank plate is also first pressed by each punching column, and then cut. The function of the guide column and the guide sleeve here is to ensure that the position of the upper die is accurate and does not shift when it moves downward; the third punching area here includes square holes, round holes, and holes of other shapes.

[0007] Further improvement, the inner contour of each circular guide hole is provided with a first self-lubricating layer made of tin bronze material. The function of the first self-lubricating layer here is to make the limit block move in the circular guide hole with small friction resistance and smooth operation to avoid jamming.

[0008] Further improvement, the surface of each punching column is provided with a second self-lubricating layer made of tin bronze material. The function of the second self-lubricating layer here is that after the blank sheet is punched by the punching column, the punching column will pass through the blank sheet, and the second self-lubricating layer can reduce the friction between the punching column and the punching hole of the blank sheet, so that when the punching column moves upward, the punched product will not be pulled upward together, and the punched product and the punching column are separated smoothly.

[0009] For further improvement, a longitudinal blanking hole is opened on the mounting seat and is located below the longitudinal punching channel hole. A bracket is provided below the longitudinal blanking hole. Pulleys are installed on both sides of the bracket. A conveyor belt is installed between the two pulleys. A servo motor driving any one of the pulleys is fixed on the bracket. The longitudinal blanking hole, bracket, pulley, conveyor belt, and servo motor are used to enable the punched waste to fall to the conveyor belt through the longitudinal blanking hole, and then be transported to a designated location for collection to avoid accumulation at the mounting seat.

[0010] Further improvement, the top surface of each circular guide hole is fixed with a noise reduction cushion. The function of the noise reduction cushion here is to prevent the limit block from directly colliding with the top surface of the circular guide hole, thereby emitting a relatively loud noise. The noise reduction cushion can effectively reduce the generation of noise.

[0011] Further improvement, the side of each plate positioning column block is fixed with an electromagnet. The function of the electromagnet here is to first suck and fix the blank plate when it is placed on the plate positioning column block, so as to prevent the blank plate from shifting during the processing process, and also to prevent the blanking product from being carried upward when the punching column is separated from the punching product.

[0012] Further improvement, the four corners of the bottom of the punching machine are fixed with adjustment feet. The function of the adjustment feet here is to make the punching machine body more stable, so that there will be no shaking during punching, and the effect is better for uneven ground.

[0013] The beneficial effects of the present invention are:

[0014] 1). Through the fixed plate, guide sleeve, support plate, right edge punching part, plate pressing punching part, guide block, first plug hole, punching column, limit block, blind hole, compression spring, the plate can be punched and punched in a wave-like manner in stages. The required punching machine has low power and the punched product has high quality.

[0015] 2). Through the lower die and the longitudinal punching channel hole, the waste material cut by punching and punching can fall to the designated position;

[0016] 3). The plate positioning column and cone can be used to place the plate conveniently and quickly;

[0017] 4). The falling waste can be collected and reused through the longitudinal drop hole, bracket, pulley, conveyor belt and servo motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the present invention;

[0019] Figure 2 A three-dimensional diagram of the upper mold and lower mold areas in the present invention;

[0020] Figure 3 It is a front view of the upper mold and lower mold area in the present invention;

[0021] Figure 4 is a three-dimensional diagram of the upper mold area in the present invention;

[0022] Figure 5 A three-dimensional diagram of the lower mold area of ​​the present invention;

[0023] Figure 6 for Figure 2 AA section view;

[0024] Figure 7 It is a structural schematic diagram of the compression spring area in the present invention;

[0025] Figure 8 for Figure 5 A local enlarged view of area B;

[0026] Fig. 9 This is a schematic diagram of the structure of the punched finished product of the present invention;

[0027] Fig.10 The figure is a flow chart of the working principle of the processing process of the punched finished product of the present invention.

[0028] Description of reference numerals: punching machine 1, pressing block 1-1, mounting seat 1-2, adjusting foot 1-3, lower die 2, guide column 2-1, longitudinal punching channel hole 2a, cone 2-2a, upper die 3, fixing plate 3-1, guide sleeve 3-1a, support plate 3-2, right edge punching part 3-2a, plate pressing punching part 3-2b, guide block 3a-2b, plate left edge punching part 3-2c, punching column 3-2d, limit block 3-2e, blind hole 3-2 f, compression spring 3-2g, first self-lubricating layer 3-2h, second self-lubricating layer 3-2j, first plug hole 3-2k, circular guide hole 3-2m, bracket 4, pulley 5, conveyor belt 6, servo motor 7, noise reduction buffer pad 8, electromagnet 9, first spacing a, second spacing b, third spacing c, punched product 10, first punching area 10-1, second punching area 10-2, third punching area 10-3, blank sheet material 11. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings:

[0030] Referring to the accompanying drawings: This light-load blanking device includes a punching machine 1, on which a pressing block 1-1 and a mounting seat 1-2 are arranged, a lower die 2 is fixed on the mounting seat 1-2, an upper die 3 is mounted on the pressing block 1-1, the upper die 3 includes a fixing plate 3-1 fixed to the bottom surface of the pressing block 1-1, four corners of the fixing plate 3-1 are fixed with guide sleeves 3-1a, four corners of the lower die 2 are respectively fixed with guide posts 2-1 matched with the guide sleeves 3-1a, a support plate 3-2 is fixed below the fixing plate 3-1, and the support plate The bottom surface of 3-2 is fixed with a sheet right edge punching portion 3-2a, a sheet pressing punching portion 3-2b and a sheet left edge punching portion 3-2c. The sheet pressing punching portion 3-2b includes a group of guide blocks 3a-2b fixed between the fixed plate 3-1 and the support plate 3-2. The support plate 3-2 is provided with a group of first plug holes 3-2k. Each guide block 3a-2b is provided with a circular guide hole 3-2m with a cross section larger than the first plug hole 3-2c. Each first plug hole 3-2k is plugged with a punching column 3-2d. The top ends of the cutting posts 3-2d are fixedly inserted into the limit blocks 3-2e at the circular guide holes 3-2m, and the top surfaces of the circular guide holes 3-2m are provided with concave blind holes 3-2f, and compression springs 3-2g are respectively installed between the top surfaces of the blind holes 3-2f and the top surfaces of the limit blocks 3-2e, and the lower die 2 is provided with longitudinal punching channel holes 2a corresponding to the shapes and positions of the punching parts 3-2a of the right edge of the plate, the pressing punching parts 3-2b of the plate, and the punching parts 3-2c of the left edge of the plate; the top surface of the lower die 2 is fixed There are plate positioning column blocks 2-2 arranged in four corners, and the inner contour formed by each plate positioning column 2-2 is a cone 2-2a that is larger on the outside and smaller on the inside; the first distance a between the bottom surface of the punching column 3-2d and the bottom surface of the support plate 3-2 is greater than the second distance b between the bottom surface of the punching portion 3-2a of the right edge of the plate and the bottom surface of the support plate 3-2, and the second distance b between the bottom surface of the punching portion 3-2a of the right edge of the plate and the bottom surface of the support plate 3-2 is greater than the third distance c between the bottom surface of the punching portion 3-2c of the left edge of the plate and the bottom surface of the support plate 3-2.

[0031] A first self-lubricating layer 3-2h made of tin bronze material is provided at the inner contour of each circular guide hole 3-2m.

[0032] The surface of each punching column 3-2d is provided with a second self-lubricating layer 3-2j made of tin bronze material.

[0033] A longitudinal blanking hole 1-2a is opened on the mounting seat 1-2, and a bracket 4 is arranged below the longitudinal blanking hole 1-2a. Pulleys 5 are installed on both side ends of the bracket 4, and a conveying belt 6 is installed between the two pulleys 5. A servo motor 7 for driving any one of the pulleys 5 to rotate is fixed on the bracket 4.

[0034] A noise reduction cushion 8 is fixed to the top surface of each circular guide hole 3-2m.

[0035] An electromagnet 9 is fixed to the side of each plate positioning column block 2-2.

[0036] Adjustment feet 1-3 are fixed to the four corners of the bottom of the punching machine 1.

[0037] The working principle of the present invention is as follows: when it is necessary to punch the blank sheet 11, it is only necessary to first put the blank sheet 11 into the sheet positioning column block 2-2, then start the electromagnet 9 and suck the four corners of the blank sheet 11, then start the punching machine 1, and the pressing block 1-1 on the punching machine 1 moves down. Since the first spacing a between the bottom surface of the punching column 3-2d and the bottom surface of the support plate 3-2 is greater than the second spacing b between the bottom surface of the punching portion 3-2a of the right edge of the sheet and the bottom surface of the support plate 3-2, each punching column 3-2d is first pressed on the blank sheet 11. Since each punching column 3-2d is plugged into the first plug hole 3-2k and the limit block 3-2e is plugged into the circular guide hole 3-2m, when the pressing block 1- When 1 continues to move downward, each compression spring 3-2g will be compressed and stored by each limit block 3-2e. After a certain movement, the punching portion 3-2a at the right edge of the plate will cut the first punching area 10-1 of the blank plate 11. The pressing block 1-1 continues to move downward, and the punching portion 3-2a at the left edge of the plate will cut the second punching area 10-2 of the blank plate 11. When the pressing block 1-1 continues to move downward, at this time, the limit block 3-2e on the punching column 3-2d touches the noise reduction buffer pad 8 and stops by blocking the bottom surface of the circular guide hole. At this time, after the pressing block 1-1 continues to move downward, each punching column 3-2d will punch out each hole in the third punching area 10-3, thereby completing the processing of the punched finished product 10 (such as Fig.10 As shown), finally, the pressing block 1-1 moves up quickly, and the right edge punching portion 3-2a, the plate pressing punching portion 3-2b, and the plate left edge punching portion 3-2c move up and reset quickly, and the punched waste is transported to the designated position through the conveyor belt 6. The present invention adopts a wave-like graded punching method, which can reduce energy consumption, increase the accuracy and processing efficiency of the punched product 10, greatly reduce the production cost, and is worthy of popularization and application.

[0038] Although the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A light-load blanking device, comprising a punching machine (1), characterized in that: The punching machine (1) is provided with a pressing block (1-1) and a mounting seat (1-2), a lower die (2) is fixed on the mounting seat (1-2), an upper die (3) is mounted on the pressing block (1-1), the upper die (3) comprises a fixing plate (3-1) fixed to the bottom surface of the pressing block (1-1), guide sleeves (3-1a) are fixed to the four corners of the fixing plate (3-1), and guide sleeves (3-1a) are fixed to the four corners of the lower die (2). A guide column (2-1) matched with a sleeve (3-1a) is provided, a support plate (3-2) is fixed below the fixed plate (3-1), a plate right edge punching portion (3-2a), a plate pressing punching portion (3-2b) and a plate left edge punching portion (3-2c) are fixed on the bottom surface of the support plate (3-2), and the plate pressing punching portion (3-2b) includes a group of guide blocks (3a-3b) fixed between the fixed plate (3-1) and the support plate (3-2). 2b), a group of first plug holes (3-2c) are formed on the support plate (3-2), a circular guide hole (3-2m) having a cross-section larger than that of the first plug holes (3-2k) is formed on each of the guide blocks (3a-2b), a punching column (3-2d) is inserted into each of the first plug holes (3-2k), the top end of each of the punching columns (3-2d) is fixedly inserted into a limit block (3-2e) at the circular guide hole (3-2m), and each of the The top surface of each circular guide hole (3-2m) is provided with an upwardly concave blind hole (3-2f), and a compression spring (3-2g) is respectively installed between the top surface of each blind hole (3-2f) and the top surface of each limit block (3-2e), and the lower die (2) is provided with a longitudinal punching channel hole (2a) corresponding to the shape and position of the right edge punching portion (3-2a) of the plate, the plate pressing punching portion (3-2b) and the left edge punching portion (3-2c) of the plate; The top surface of the lower mold (2) is fixed with plate positioning column blocks (2-2) arranged in four corners, and the inner contour formed by each of the plate positioning columns (2-2) is in a cone shape (2-2a) that is larger on the outside and smaller on the inside; The first distance (a) between the bottom surface of the punching column (3-2d) and the bottom surface of the support plate (3-2) is greater than the second distance (b) between the bottom surface of the punching portion (3-2a) at the right edge of the plate and the bottom surface of the support plate (3-2), and the second distance (b) between the bottom surface of the punching portion (3-2a) at the right edge of the plate and the bottom surface of the support plate (3-2) is greater than the third distance (c) between the bottom surface of the punching portion (3-2c) at the left edge of the plate and the bottom surface of the support plate (3-2).

2. A light-load blanking device according to claim 1, characterized in that: The inner contour of each circular guide hole (3-2m) is provided with a first self-lubricating layer (3-2h) made of tin bronze material.

3. A light-load blanking device according to claim 2, characterized in that: The surface of each of the punching columns (3-2d) is provided with a second self-lubricating layer (3-2j) made of tin bronze material.

4. A light-load blanking device according to claim 1, characterized in that: A longitudinal blanking hole (1-2a) is formed on the mounting seat (1-2), a bracket (4) is provided below the longitudinal blanking hole (1-2a), pulleys (5) are installed on both side ends of the bracket (4), a conveying belt (6) is installed between the two pulleys (5), and a servo motor (7) for driving any one of the pulleys (5) to rotate is fixed on the bracket (4).

5. A light-load blanking device according to claim 1, characterized in that: A noise reduction buffer pad (8) is fixed on the top surface of each circular guide hole (3-2m).

6. A light-load blanking device according to claim 1, characterized in that: An electromagnet (9) is fixed on the side of each plate positioning column block (2-2).

7. A light-load blanking device according to claim 1, characterized in that: Adjustment feet (1-3) are fixed at the four corners of the bottom of the punching machine (1).

Images