Arc bending device for metal workpiece machining

Abstract

The utility model discloses an arc bending device for machining a metal workpiece, which is characterized in that a positioning strip is fixedly mounted on a table top, a positioning block is fixedly mounted on one side of the positioning strip, a pressing device is arranged on the table top on one side of the left end of the positioning strip, a main shaft is vertically mounted on a bottom plate, and a rotating arm component is coaxially and rotatably mounted with the main shaft; a forming pressing block is installed on the rotary arm assembly, a connecting arm is fixedly connected to the left side of the rotary arm assembly, a rotary air cylinder base is fixedly installed on the portion, on the right side of the rotary arm assembly, of the bottom plate, an air cylinder connecting piece is rotationally installed on the rotary air cylinder base, a rotary air cylinder is fixedly installed on the air cylinder connecting piece, and the output end of the rotary air cylinder is hinged to the tail end of the connecting arm. A piston rod of a pressing air cylinder in the pressing device extends out to enable a rocker arm to rotate, a pressing block installed at the lower end of the rocker arm downwards presses a workpiece, and in cooperation with the positioning function of a positioning strip and a positioning block, the workpiece cannot slide in the machining process, position deviation cannot be generated in the machining process, position adjustment of the workpiece is not needed, and the machining efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal part processing equipment. Specifically, it particularly relates to an arc bending device for metal workpiece processing. Background Art

[0002] In the field of metal part processing, an arc bending machine is a machine used for arc processing of workpieces, mainly for arc processing of various metal workpieces.

[0003] A numerically controlled arc bending machine proposed in the existing patent with the publication number CN216369684U relates to the technical field of arc bending machines; it includes a base. One side of the lifting mechanism is fixedly connected to the base, and the other side is slidably connected to the base. The rotating mechanism is fixedly connected to the end of the lifting mechanism away from the base; the beneficial effect of the above solution is that the numerically controlled arc bending machine drives the sliding support to slide through the telescopic member, and the connecting rod rotates, so that the lifting plate moves to adjust the arc bending machine to a suitable height. Then, the driving member drives the turntable and the fixed shaft to rotate, and the grooved wheel rotates accordingly, driving the rotating shaft and the rotating plate to rotate to adjust the arc bending machine to a suitable angle. The device can meet different working requirements according to the actual situation, can select different heights and angles as needed, is no longer limited to only being able to perform arc bending processing at a fixed height or a fixed angle, effectively improves the practicability of the device, also increases the comprehensiveness of the device, and to a certain extent improves the working efficiency of the device.

[0004] However, in the process of arc bending of metal workpieces by the numerically controlled arc bending machine in the above technical solution, since there is no structure for limiting the workpiece, the workpiece is likely to slide during the arc bending process, which in turn affects the normal processing of the workpiece, and the position of the workpiece needs to be adjusted again, resulting in low processing efficiency. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide an arc bending device for metal workpiece processing to solve the problems raised in the above background art.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A bending arc device for machining metal workpieces, which includes a frame. A tabletop is installed on the top of the frame. A bottom plate is fixedly installed in the middle and lower part of the frame. A positioning strip is fixedly installed on the tabletop. A positioning block is fixedly installed on one side of the positioning strip. A pressing device is provided on the tabletop on one side of the left end of the positioning strip. A main shaft is vertically installed on the bottom plate. A swing arm assembly is coaxially and rotatably installed with the main shaft. A forming pressing block is installed on the swing arm assembly. A connecting arm is fixedly connected to the left side of the swing arm assembly. A rotary cylinder seat is fixedly installed on the bottom plate on the right side of the swing arm assembly. A cylinder connecting piece is rotatably installed on the rotary cylinder seat. A rotary cylinder is fixedly installed on the cylinder connecting piece. The output end of the rotary cylinder is hinged to the end of the connecting arm.

[0007] Preferably, the pressing device includes an installation frame fixedly installed on the tabletop. A pressing cylinder is rotatably installed at the rear side of the installation frame through a bracket. A swing arm is hingedly installed at the front end of the installation frame. The output end of the pressing cylinder is hinged to the upper end of the swing arm. A pressing block is fixedly installed at the lower end of the swing arm.

[0008] Preferably, the swing arm assembly includes a rotating bottom plate installed on the main shaft through a bearing. Left and right vertical plates are respectively vertically installed on the left and right sides of the rotating bottom plate. An adjusting cylinder is rotatably installed between the left and right vertical plates. The end of the piston rod of the adjusting cylinder is hinged to a connecting rod. The other end of the connecting rod is hinged to the bottom end of the forming pressing block. A flat plate is fixedly installed at the top ends of the left and right vertical plates and a guide rail is fixedly installed on the flat plate. The forming pressing block can slide back and forth along the guide rail.

[0009] Preferably, a limiting plate is installed on the bottom plate and a limiting block is fixedly installed on the limiting plate.

[0010] Preferably, a slot hole for avoiding the main shaft and the forming pressing block is opened on the tabletop.

[0011] Beneficial effects: Compared with the prior art, the beneficial effects of the present utility model are as follows: When the piston rod of the pressing cylinder in the pressing device extends, the swing arm rotates. The pressing block installed at the lower end of the swing arm presses the workpiece downward. With the positioning function of the positioning strip and the positioning block, the workpiece will not slide during the processing, and the position will not deviate during the processing, so there is no need to adjust the position of the workpiece, which can effectively improve the processing efficiency; When the piston rod of the rotary cylinder extends, the swing arm assembly drives the forming pressing block to rotate around the main shaft to realize the bending arc processing of the workpiece, with reliable work and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of a bending arc device for machining metal workpieces proposed by the present utility model.

[0013] Figure 2 It is a schematic structural diagram of a swivel arm assembly.

[0014] Figure 3 This is a rear three-dimensional view of a bending arc device for processing metal workpieces proposed by the present utility model.

[0015] In the drawings: 1-frame, 2-tabletop, 3-bottom plate, 4-positioning bar, 5-positioning block, 6-mounting frame, 7-clamping cylinder, 8-rocker arm, 9-clamping block, 10-main shaft, 11-rotating bottom plate, 12-left vertical plate, 13-right vertical plate, 14-adjusting cylinder, 15-link rod, 16-forming pressing block, 17-guide rail, 18-connecting arm, 19-limiting plate, 20-limiting block, 21-rotary cylinder seat, 22-cylinder connecting piece, 23-rotary cylinder. Detailed implementation manners

[0016] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0017] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model may be implemented in other ways different from those described herein. Therefore, the present utility model is not limited to the limitations of the specific embodiments disclosed in the following specification.

[0018] Embodiment

[0019] Referring to the attached drawings of the specification, in an embodiment of the present utility model, a bending arc device for processing metal workpieces includes a frame 1. A tabletop 2 is installed on the top of the frame 1. A bottom plate 3 is fixedly installed in the middle and lower part of the frame 1. A positioning bar 4 is fixedly installed on the tabletop 2. A positioning block 5 is fixedly installed on one side of the positioning bar 4. A pressing device is provided on the tabletop 2 on one side of the left end of the positioning bar 4. The pressing device includes a mounting frame 6 fixedly installed on the tabletop 2. A clamping cylinder 7 is rotatably installed at the rear side of the mounting frame 6 through a bracket. A rocker arm 8 is hingedly installed at the front end of the mounting frame 6. The output end of the clamping cylinder 7 is hinged to the upper end of the rocker arm 8. A clamping block 9 is fixedly installed at the lower end of the rocker arm 8;

[0020] A main shaft 10 is vertically installed on the bottom plate 3, and a swing arm assembly is coaxially and rotatably installed with the main shaft 10. The swing arm assembly includes a rotating bottom plate 11 installed on the main shaft 10 through a bearing. Left and right vertical plates 12 and 13 are respectively vertically installed on the left and right sides of the rotating bottom plate 11. An adjusting cylinder 14 is rotatably installed between the left and right vertical plates 12 and 13. The end of the piston rod of the adjusting cylinder 14 is hinged to a connecting rod 15, and the other end of the connecting rod 15 is hinged to the bottom end of the forming press block 16. The top ends of the left and right vertical plates 12 and 13 are fixedly installed with a flat plate and a guide rail 17 is fixedly installed on the flat plate. The forming press block 16 can slide back and forth along the guide rail 17. A connecting arm 18 is fixedly connected to the left vertical plate 12 on the left side of the swing arm assembly. A swing cylinder seat 21 is fixedly installed on the bottom plate 3 on the right side of the swing arm assembly. A cylinder connecting piece 22 is rotatably installed on the swing cylinder seat 21, and a swing cylinder 23 is fixedly installed on the cylinder connecting piece 22. The output end of the swing cylinder 23 is hinged to the end of the connecting arm 18. A limiting plate 19 is installed on the bottom plate 3, and a limiting block 20 is fixedly installed on the limiting plate 19. The limiting block 20 is used to limit the rotation angle of the swing arm assembly to prevent interference between the swing cylinder 23 and the swing cylinder seat 21. A slot hole for avoiding the main shaft 10 and the forming press block 16 is formed on the table surface 2.

[0021] In the present utility model, when the piston rod of the pressing cylinder in the pressing device extends, the swing arm rotates, and the pressing block installed at the lower end of the swing arm presses the workpiece downward. With the positioning effects of the positioning strip and the positioning block, the workpiece will not slide during the processing, and the position will not deviate during the processing, eliminating the need for position adjustment of the workpiece and effectively improving the processing efficiency; when the piston rod of the swing cylinder extends, the swing arm assembly drives the forming press block to rotate around the main shaft to realize the arc bending processing of the workpiece, with reliable operation and high efficiency; the structure of the present application is simple, highly practical, and easy to operate, worthy of promotion.

[0022] In the above specific embodiments, the purpose, technical solution, and beneficial effects of the present utility model have been further described in detail. It should be understood that the above are only specific embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0024] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

Claims

1. A bending arc device for machining metal workpieces, characterized in that: It includes a frame (1), on the top of which a tabletop (2) is installed. A bottom plate (3) is fixedly installed in the middle and lower part of the frame (1). A positioning strip (4) is fixedly installed on the tabletop (2). A positioning block (5) is fixedly installed on one side of the positioning strip (4). On one side of the left end of the positioning strip (4), a pressing device is provided on the tabletop (2). A main shaft (10) is vertically installed on the bottom plate (3). A swing arm assembly is coaxially and rotatably installed with the main shaft (10). A forming block (16) is installed on the swing arm assembly. A connecting arm (18) is fixedly connected to the left side of the swing arm assembly. A rotary cylinder seat (21) is fixedly installed on the bottom plate (3) on the right side of the swing arm assembly. A cylinder connecting piece (22) is rotatably installed on the rotary cylinder seat (21). A rotary cylinder (23) is fixedly installed on the cylinder connecting piece (22). The output end of the rotary cylinder (23) is hinged to the end of the connecting arm (18).

2. The bending arc device for machining metal workpieces according to claim 1, characterized in that: The pressing device includes a mounting bracket (6) fixedly installed on the tabletop (2). A pressing cylinder (7) is rotatably installed at the rear side of the mounting bracket (6) through a bracket. A swing arm (8) is hingedly installed at the front end of the mounting bracket (6). The output end of the pressing cylinder (7) is hinged to the upper end of the swing arm (8). A pressing block (9) is fixedly installed at the lower end of the swing arm (8).

3. A bending arc device for metal workpiece processing according to claim 1, characterized in that: The swing arm assembly includes a rotating bottom plate (11) installed on the main shaft (10) through a bearing. Left and right vertical plates (12) and (13) are respectively vertically installed on the left and right sides of the rotating bottom plate (11). An adjusting cylinder (14) is rotatably installed between the left vertical plate (12) and the right vertical plate (13). The end of the piston rod of the adjusting cylinder (14) is hinged to a connecting rod (15). The other end of the connecting rod (15) is hinged to the bottom end of the forming block (16). A flat plate is fixedly installed at the top ends of the left vertical plate (12) and the right vertical plate (13), and a guide rail (17) is fixedly installed on the flat plate. The forming block (16) can slide back and forth along the guide rail (17).

4. A bending arc device for machining metal workpieces according to claim 1, characterized in that: A limiting plate (19) is installed on the bottom plate (3), and a limiting block (20) is fixedly installed on the limiting plate (19).

5. The bending arc device for machining metal workpieces according to claim 1, characterized in that: Slot holes for avoiding the main shaft (10) and the forming block (16) are formed on the tabletop (2).

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