Sheet metal part punching device

Abstract

The utility model discloses a punching device for sheet metal parts, which belongs to the technical field of punching processing and comprises a processing table, a fixing frame is fixed on the left side of the top of the processing table, a hydraulic cylinder is mounted at the top of the fixing frame, a piston rod of the hydraulic cylinder penetrates through the fixing frame and is fixedly provided with a puncher, and a limiting frame is fixed on the outer side of the puncher. According to the sheet metal part punching device, the conveying rollers are driven through the driving assembly, sheet metal parts can be conveyed in cooperation with the extrusion rollers, then the hydraulic cylinder drives the puncher to conduct punching treatment on the sheet metal parts, and meanwhile the distance between the fixing barrel and the puncher can be adjusted through the movable rod in the limiting frame on the puncher; when punching is conducted every time, the positioning column in the fixing cylinder can be used for positioning a hole machined before, then it is guaranteed that the distance between the two sets of holes is the same, and therefore errors generated by independent positioning during punching every time are reduced, and the precision of continuous equal-distance punching is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of punching processing, in particular to a punching device for sheet metal parts. Background Technique

[0002] A punching machine is a mechanical device that, after installing the raw materials, under the drive of a power mechanism, the punching die acts on the material to complete punching. The punching machine can perform operations such as thin sheet processing, stamping, die pressing, and embossing, forcing the metal into the die.

[0003] In the prior art, the Chinese utility model content with the publication number: CN218693047U discloses a punching device for sheet metal parts. Aiming at the problem that the conventional punching device for sheet metal parts is not convenient for automatically calibrating the punching position and requires manual calibration, thus affecting the punching efficiency and accuracy, the following scheme is now proposed. It includes: a bottom frame, the top of the bottom frame is open; a punching component, the punching component includes a top plate, a lower template and a punching head, a first motor is fixedly installed on the top of the top plate, a lead screw is fixedly connected to the output shaft of the first motor, and a bracket is fixedly installed on the top of the lower template; an adjusting component, the adjusting component includes two support plates, two pressing plates and two screw rods, an L-shaped plate is fixedly installed on the top of the support plate, and a cylinder is fixedly installed on the top of the L-shaped plate. Through the mutual cooperation between the adjusting component and the punching component, the utility model can realize the automatic punching positioning work of the sheet metal parts to improve the punching accuracy and efficiency.

[0004] In the above technical solution, while clamping the sheet metal part through the adjusting component, the sheet metal part can be moved back and forth, and then the punching head that can move left and right is used to punch the sheet metal part. When continuous equidistant punching needs to be performed on the sheet metal part, the sheet metal part needs to be adjusted before each punching to ensure the accuracy of the punching position. Due to certain errors in mechanical equipment, there are certain errors in each adjustment. When adjusted multiple times, the error range can increase, resulting in a decrease in the accuracy of continuous equidistant punching. Content of the Utility Model

[0005] The purpose of the utility model is to provide a punching device for sheet metal parts. By using the adjustment of the limit frame fixed outside the punching device and the movable rod, the distance between the fixed cylinder and the punching device can be accurately limited. Whenever the punching device punches, the positioning column in the fixed cylinder first positions with the previously processed hole to ensure that the distance between each punching and the previous hole remains equal, and the error is controlled within a certain range, so as to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A punching device for sheet metal parts, including a processing table. A fixing frame is fixed on the left side of the top of the processing table. A hydraulic cylinder is installed on the top of the fixing frame. The piston rod of the hydraulic cylinder penetrates through the fixing frame and is fixed with a punching device. A limiting frame is fixed on the outer side of the punching device. A movable rod is movably arranged in the inner cavity of the limiting frame. One end of the movable rod is fixed with a fixing cylinder. A first support spring is fixed on the top of the inner cavity of the fixing cylinder. The bottom of the first support spring is fixed with a positioning column. The bottom of the positioning column penetrates through the fixing cylinder and extends downward. The inner cavity of the processing table is rotatably connected with conveying rollers in sequence from left to right through bearings. A fixing box is fixed on the outer side of the processing table. A driving component for driving the conveying rollers is arranged in the inner cavity of the fixing box. A fixing frame is fixed on the top of the processing table. A second support spring is fixed on the bottom of the inner cavity of the fixing frame. The bottom of the second support spring is fixed with a movable frame. A pressing roller is rotatably connected in the inner cavity of the movable frame through a bearing. A sheet metal part to be processed is clamped between the pressing roller and the conveying rollers.

[0007] Preferably, the driving component includes a driving motor fixed at one end of the fixing box. A driving shaft is rotatably connected in the inner cavity of the fixing box through a bearing. One end of the driving shaft is key-connected to the output shaft of the driving motor. A plurality of driving helical gears are fixed on the outer side of the driving shaft. One end of the conveying roller penetrates into the inner cavity of the fixing box and is fixed with a driven helical gear meshing with the driving helical gear.

[0008] Preferably, limit columns are fixed on the four circumferences of the top of the movable frame. The tops of the limit columns penetrate through the fixing frame and extend upward and are fixed with limit rings.

[0009] Preferably, a limit bolt is threadedly connected to the outer side of the limiting frame. The opposite ends of the limit bolt penetrate into the inner cavity of the limiting frame and are in contact with the movable rod.

[0010] Preferably, an adjusting bolt is threadedly connected to the top of the fixing cylinder. The bottom of the adjusting bolt penetrates into the inner cavity of the fixing cylinder and is located inside the first support spring.

[0011] Preferably, scale lines are arranged on the outer side of the movable rod. Chamfers are provided at the bottoms of both the fixing cylinder and the positioning column.

[0012] Preferably, an adjusting screw rod is threadedly connected to the side of the fixing frame close to the fixing frame. The opposite ends of the adjusting screw rod are rotatably connected with a limit block through a bearing. The bottom of the limit block is in contact with the bottom of the inner cavity of the processing table.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. The utility model drives the conveying roller through a driving component, and can convey the sheet metal part in cooperation with the pressing roller. Then, the hydraulic cylinder drives the punching device to punch the sheet metal part. At the same time, the movable rod in the limiting frame on the punching device can adjust the distance between the fixed cylinder and the punching device. Whenever punching, the positioning column in the fixed cylinder can be used to position the hole processed previously, and then ensure that the distance between two groups of holes is the same, thereby reducing the error generated by individual positioning during each punching and ensuring the accuracy of continuous equidistant punching.

[0015] 2. The utility model can adjust the distance that the positioning column moves upward in the fixed cylinder through an adjusting bolt, which is convenient for positioning sheet metal parts with different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 is a three-dimensional structural schematic diagram of the processing table of the utility model;

[0018] Figure 3 is a three-dimensional structural schematic diagram of the fixed frame of the utility model;

[0019] Figure 4 is a side three-dimensional structural schematic diagram of the fixed bracket of the utility model;

[0020] Figure 5 is a sectional three-dimensional structural schematic diagram of the fixed cylinder and the limiting frame of the utility model.

[0021] Reference numerals in the figure: 1, processing table; 2, fixed bracket; 3, hydraulic cylinder; 4, punching device; 5, limiting frame; 6, movable rod; 7, fixed cylinder; 8, first support spring; 9, positioning column; 10, conveying roller; 11, fixed box; 12, driving component; 121, driving motor; 122, driving shaft; 123, driving helical gear; 124, driven helical gear; 13, fixed frame; 14, second support spring; 15, movable frame; 16, pressing roller; 17, limiting column; 18, limiting bolt; 19, adjusting bolt; 20, adjusting screw rod; 21, limiting block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0023] The utility model provides as Figures 1 to 5A punching device for sheet metal parts shown in the figure includes a processing table 1. On the left side of the top of the processing table 1, a fixed frame 2 is fixedly installed. At the top of the fixed frame 2, a hydraulic cylinder 3 is installed. The piston rod of the hydraulic cylinder 3 penetrates through the fixed frame 2 and is fixed with a punching device 4. A limiting frame 5 is fixedly installed on the outside of the punching device 4. An active rod 6 is movably arranged in the inner cavity of the limiting frame 5. One end of the active rod 6 is fixed with a fixed cylinder 7. At the top of the inner cavity of the fixed cylinder 7, a first support spring 8 is fixedly installed. The bottom of the first support spring 8 is fixed with a positioning column 9. The bottom of the positioning column 9 penetrates through the fixed cylinder 7 and extends downward. The inner cavity of the processing table 1 is sequentially rotationally connected with conveying rollers 10 from left to right through bearings. On the outside of the processing table 1, a fixed box 11 is fixedly installed. Inside the fixed box 11, a driving assembly 12 for driving the conveying rollers 10 is arranged. On the top of the processing table 1, a fixed frame 13 is fixedly installed. At the bottom of the inner cavity of the fixed frame 13, a second support spring 14 is fixedly installed. The bottom of the second support spring 14 is fixed with a movable frame 15. Inside the movable frame 15, a pressing roller 16 is rotationally connected through a bearing. A sheet metal part to be processed is clamped between the pressing roller 16 and the conveying rollers 10;

[0024] The driving assembly 12 drives the conveying rollers 10, and in cooperation with the pressing roller 16, the sheet metal part can be conveyed. Then, the hydraulic cylinder 3 drives the punching device 4 to punch the sheet metal part. At the same time, the active rod 6 in the limiting frame 5 on the punching device 4 can adjust the distance between the fixed cylinder 7 and the punching device 4. Whenever punching, the positioning column 9 in the fixed cylinder 7 can be used to position the hole processed previously, and then ensure that the distance between two groups of holes is the same, thereby reducing the error generated by individual positioning during each punching and ensuring the accuracy of continuous equidistant punching.

[0025] The driving assembly 12 includes a driving motor 121 fixed at one end of the fixed box 11. Inside the fixed box 11, a driving shaft 122 is rotationally connected through a bearing. One end of the driving shaft 122 is key-connected to the output shaft of the driving motor 121. Multiple groups of driving bevel gears 123 are fixedly installed on the outside of the driving shaft 122. One end of the conveying roller 10 penetrates into the inner cavity of the fixed box 11 and is fixed with a driven bevel gear 124 meshing with the driving bevel gear 123. The driving motor 121 drives the driving shaft 122 to rotate, and then the driving bevel gears 123 rotate synchronously with the driving shaft 122. Subsequently, the driving bevel gears 123 drive multiple groups of conveying rollers 10 to rotate synchronously through the driven bevel gears 124, conveying the sheet metal part for convenient continuous punching processing.

[0026] Limit columns 17 are fixedly installed around the top of the movable frame 15. The tops of the limit columns 17 penetrate through the fixed frame 13 and extend upward and are fixed with limit rings. Through the arrangement of the limit columns 17, it is convenient to limit the movable frame 15, avoiding the shaking of the movable frame 15 in the fixed frame 13, affecting the stability of the sheet metal part conveying, and preventing too large an error in the conveying distance.

[0027] The outer side of the limit frame 5 is threadedly connected with a limit bolt 18. One end of the limit bolt 18 facing each other penetrates into the inner cavity of the limit frame 5 and abuts against the movable rod 6. Through the arrangement of the limit bolt 18, it is convenient to limit and fix the movable rod 6, ensure that the distance between the fixed cylinder 7 and the punching device 4 remains unchanged, and at the same time, the distance between the two can be adjusted.

[0028] The top of the fixed cylinder 7 is threadedly connected with an adjusting bolt 19. The bottom of the adjusting bolt 19 penetrates into the inner cavity of the fixed cylinder 7 and is located inside the first support spring 8. By adjusting the adjusting bolt 19, the distance that the positioning column 9 moves upward in the fixed cylinder 7 can be adjusted, which is convenient for positioning sheet metal parts with different thicknesses.

[0029] Scale lines are arranged on the outer side of the movable rod 6. Chamfers are provided at the bottoms of the fixed cylinder 7 and the positioning column 9. Through the arrangement of the scale lines, it is convenient to accurately adjust the distance between the fixed cylinder 7 and the punching device 4, and ensure the accuracy of punching.

[0030] One side of the fixed frame 2 close to the fixed frame 13 is threadedly connected with an adjusting screw rod 20. One end of the adjusting screw rod 20 facing each other is rotatably connected with a limit block 21 through a bearing. The bottom of the limit block 21 abuts against the bottom of the inner cavity of the processing table 1. By rotating the adjusting screw rod 20, the position of the limit block 21 can be adjusted to limit the sheet metal part front and back in the processing table 1 and prevent the sheet metal part from shaking back and forth, resulting in deviation of the punching position.

[0031] During specific use, place the sheet metal part to be processed between the conveying rollers 10 and the pressing rollers 16, then adjust the position of the movable rod 6 in the limit frame 5, and at the same time use the limit bolt 18 to fix the movable rod 6. Then start the driving motor 121. The driving motor 121 drives the driving shaft 122 to rotate. The driving shaft 122 drives the driving helical gear 123 to drive the conveying rollers 10 through the driven helical gear 124. Then the conveying rollers 10 cooperate with the pressing rollers 16 to convey the sheet metal part to the left. Then the hydraulic cylinder 3 drives the punching device 4 to move downward to punch the sheet metal part. As the punching device 4 moves upward and the sheet metal part moves to the left, the completed hole is located on the left side of the punching device 4. When the punching device 4 moves downward again, first the positioning column 9 in the fixed cylinder 7 contacts the sheet metal part, and then the positioning column 9 is inserted into the hole to calibrate the position of the sheet metal part by using the positioning column 9 to ensure the accuracy of the punching position again, and continuous equidistant punching can be performed.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A punching device for sheet metal parts, comprising a processing table (1), characterized in that: On the left side of the top of the processing table (1), a fixing frame (2) is fixed. On the top of the fixing frame (2), a hydraulic cylinder (3) is installed. The piston rod of the hydraulic cylinder (3) penetrates through the fixing frame (2) and is fixed with a punching device (4). A limiting frame (5) is fixed on the outer side of the punching device (4). An activity rod (6) is movably arranged in the inner cavity of the limiting frame (5). One end of the activity rod (6) is fixed with a fixing cylinder (7). At the top of the inner cavity of the fixing cylinder (7), a first supporting spring (8) is fixed. At the bottom of the first supporting spring (8), a positioning column (9) is fixed. The bottom of the positioning column (9) penetrates through the fixing cylinder (7) and extends downward. In the inner cavity of the processing table (1), conveying rollers (10) are sequentially rotationally connected by bearings from left to right. A fixing box (11) is fixed on the outer side of the processing table (1). In the inner cavity of the fixing box (11), a driving assembly (12) for driving the conveying rollers (10) is arranged. A fixing frame (13) is fixed on the top of the processing table (1). At the bottom of the inner cavity of the fixing frame (13), a second supporting spring (14) is fixed. At the bottom of the second supporting spring (14), a movable frame (15) is fixed. In the inner cavity of the movable frame (15), a pressing roller (16) is rotationally connected by a bearing. A sheet metal part to be processed is clamped between the pressing roller (16) and the conveying rollers (10).

2. The punching device for sheet metal parts according to claim 1, characterized in that: The driving assembly (12) includes a driving motor (121) fixed at one end of the fixing box (11). In the inner cavity of the fixing box (11), a driving shaft (122) is rotationally connected by a bearing. One end of the driving shaft (122) is key-connected to the output shaft of the driving motor (121). A plurality of driving bevel gears (123) are fixed on the outer side of the driving shaft (122). One end of the conveying roller (10) penetrates into the inner cavity of the fixing box (11) and is fixed with a driven bevel gear (124) meshing with the driving bevel gear (123).

3. The punching device for sheet metal parts according to claim 1, characterized in that: Limit columns (17) are fixed on the four circumferences of the top of the movable frame (15). The tops of the limit columns (17) penetrate through the fixing frame (13) and extend upward and are fixed with limit rings.

4. A punching device for sheet metal parts according to claim 1, characterized in that: A limit bolt (18) is threadedly connected to the outer side of the limit frame (5). The opposite ends of the limit bolt (18) penetrate into the inner cavity of the limit frame (5) and are in contact with the activity rod (6).

5. A punching device for sheet metal parts according to claim 1, characterized in that: An adjusting bolt (19) is threadedly connected to the top of the fixing cylinder (7). The bottom of the adjusting bolt (19) penetrates into the inner cavity of the fixing cylinder (7) and is located inside the first supporting spring (8).

6. The punching device for sheet metal parts according to claim 1, characterized in that: Scale lines are arranged on the outer side of the activity rod (6). Chamfers are provided at the bottoms of the fixing cylinder (7) and the positioning column (9).

7. A punching device for sheet metal parts according to claim 1, characterized in that: An adjusting screw rod (20) is threadedly connected to the side of the fixing frame (2) close to the fixing frame (13). The opposite ends of the adjusting screw rod (20) are rotationally connected by a bearing with a limit block (21). The bottom of the limit block (21) is in contact with the bottom of the inner cavity of the processing table (1).

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