Weld joint bending device suitable for special-shaped metal plate

Abstract

The utility model relates to a welding seam bending device suitable for a special-shaped metal plate, which comprises an upper bending plate, an L-shaped lower bending plate, a pre-bending roller, a roller, a roller telescopic rod and a bending plate rotating shaft, the upper bending plate is movably connected with the L-shaped lower bending plate through the bending plate rotating shaft, an upper bending plate handle is fixedly arranged at the upper part of the upper bending plate, and the lower bending plate handle is fixedly arranged at the lower part of the upper bending plate. The outer side of the L-shaped lower bending plate is in threaded connection with a lower bending plate handle, and a screw hole is formed in the surface of the upper bending plate corresponding to a lower bending plate handle screw rod; a limiting block is fixedly installed on the face, facing the upper bending plate, of the L-shaped lower bending plate, a bending groove is reserved between the side edge of the limiting block and the L-shaped lower bending plate, a bending buffering groove is formed in the position, in front of the bending groove, of the surface of the L-shaped lower bending plate, and a pre-bending roller and a bending roller which point to the bending buffering groove are installed on the L-shaped lower bending plate. According to the utility model, the preset welding seam of the sheet metal part can be quickly bent, the production procedures can be effectively reduced, the product quality is improved, and the cost is extremely low.

Description

Technical Field

[0001] This utility model relates to a sheet metal bending device, specifically a welding seam bending device suitable for irregularly shaped sheet metal. Background Technology

[0002] Currently, electric covered trucks mostly use a method of overlapping and welding two or more sheet metal pieces together, resulting in exposed weld points. After welding, the surface needs to be sanded smooth, and putty needs to be applied to level the weld area before painting. This complex manufacturing process affects production efficiency and increases manufacturing costs. In terms of quality, putty cracking can occur, affecting product quality. Therefore, it is necessary to fold the edges of the sheet metal to hide the weld seams. Although there are now dedicated folding stamping dies, tricycle manufacturers are extremely cost-sensitive, and purchasing folding dies would incur a huge cost burden that they cannot afford. Furthermore, it is difficult to remove the die after stamping. Therefore, chiseling dies are used for processing, but these dies have a slow processing speed, affecting production efficiency.

[0003] Currently, a utility model patent with publication number CN215508683U discloses a bending machine for processing sheet metal GGD cabinets, including a bending machine body, a support plate, and a first plate. A second plate is fixed to the front end of the first plate on the bending machine body. Support columns are welded to both sides of the front end of the lower surface of the second plate, and the rear ends of the two support columns are welded to the front sides of the support plate. Four connecting rods are fixed in a rectangular array on the upper surface of the support plate, and the top ends of the four connecting rods are fixedly connected to the four corners of the lower surface of the first plate. An air pipe is embedded in the first plate, and a vacuum suction cup is embedded in the second plate, with the bottom end of the vacuum suction cup connected to the top end of the air pipe. This utility model has the advantage of positioning sheet metal parts located outside the bending machine body during bending, thus maintaining the stability of the bent sheet metal parts.

[0004] As can be seen from the above-disclosed technical content, as prior art, the utility model with announcement number CN215508683U achieves the effect of positioning the sheet metal parts located outside the bending machine body and keeping the bent sheet metal parts stable by setting up an air pipe, a vacuum suction cup and a vacuum pump body. Although the bending equipment proposed by the above-mentioned prior art can perform bending, it is not suitable for the irregular edges of the tricycle canopy and cannot adapt to the processing work of the canopy sheet metal parts. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a welding seam bending device suitable for irregularly shaped sheet metal, which can quickly bend the predetermined weld seam of sheet metal parts, effectively reduce production steps, improve product quality, and has extremely low cost.

[0006] To achieve the above objectives, this utility model is applicable to a bending device for welded seams of irregularly shaped sheet metal, comprising an upper bending plate, an L-shaped lower bending plate, a pre-bending roller, a roller, a roller telescopic rod, a telescopic rod limiting groove, a screw, a bearing, a bending roller, a bending buffer groove, a bending groove, a limiting block, an upper bending plate handle, a lower bending plate handle, and a bending plate pivot. The upper bending plate is movably connected to the L-shaped lower bending plate via the bending plate pivot. The upper bending plate handle is fixedly installed on the upper part of the upper bending plate, and the lower bending plate handle is screwed to the outer side of the L-shaped lower bending plate. A screw hole is made on the surface of the upper bending plate corresponding to the screw of the plate handle; a limiting block is fixedly installed on the side of the L-shaped lower bending plate facing the upper bending plate, a bending groove is reserved between the side of the limiting block and the L-shaped lower bending plate, a bending buffer groove is made on the surface of the L-shaped lower bending plate in front of the bending groove, and a pre-bending roller and a bending roller pointing to the bending buffer groove are respectively installed on the L-shaped lower bending plate; a bending drive roller is installed in a groove on the surface of the limiting block, and a sheet metal pressure roller is installed on the lower surface of the upper bending plate corresponding to the bending drive roller. The bending drive motor drives the bending drive roller through a bevel gear and a transmission shaft.

[0007] In addition, the welding seam bending device for irregularly shaped sheet metal proposed in the above embodiments of this utility model may also have the following additional technical features:

[0008] As a further improvement of this utility model, the connection between the upper bending plate and the L-shaped lower bending plate is provided with staggered toothed plates or a gentle slope is provided.

[0009] As a further improvement of this utility model, the pre-bending roller includes a roller, a roller telescopic rod, and a bearing. The roller telescopic rod is inserted into a pre-set through hole in the L-shaped lower bending plate. The slider on the side of the roller telescopic rod moves back and forth in the telescopic rod limiting groove. The bearing is fixedly installed at the lower end of the pre-set through hole in the L-shaped lower bending plate. The screw passes through the bearing and is screwed into the lower end of the roller telescopic rod. The roller is installed at the upper end of the roller telescopic rod through a rotating shaft. The pre-bending roller and the bending roller have the same structure.

[0010] As a further improvement of this utility model, the upper bending plate handle and the lower bending plate handle are covered with rubber sleeves.

[0011] As a further improvement of this utility model, the roller is a steel roller with sharp edges.

[0012] By means of the above solution, this utility model has at least the following advantages: Compared with conventional bending dies, the sheet metal is clamped by the upper bending plate and the L-shaped lower bending plate, and the upper bending plate and the L-shaped lower bending plate are pushed forward along the predetermined weld seam by the moving bending drive roller and the sheet metal pressure roller, so that the edge of the sheet metal is bent. The predetermined weld seam of the sheet metal part can be bent quickly, which can effectively reduce the production process, improve product quality, and has extremely low cost. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of a welding seam bending device suitable for irregularly shaped sheet metal;

[0014] Figure 2 This is a front view of a welding seam bending device suitable for irregularly shaped sheet metal;

[0015] Figure 3 It is a bottom-view perspective view of the welding seam bending device applicable to irregularly shaped sheet metal.

[0016] Figure 4 This is a front view of the unfolded welding seam bending device applicable to irregularly shaped sheet metal;

[0017] Figure 5 This is a diagram of the pre-bending roller mechanism for a welding seam bending device suitable for irregularly shaped sheet metal.

[0018] In the diagram: 1. Upper bending plate, 2. L-shaped lower bending plate, 21. Pre-bending roller, 211. Roller, 212. Roller telescopic rod, 213. Telescopic rod limiting groove, 214. Screw, 215. Bearing, 22. Bending roller, 23. Bending chute, 24. Bending groove, 25. Limiting block, 26. Bending drive roller, 3. Upper bending plate handle, 4. Lower bending plate handle, 5. Bending plate shaft, 6. Bending drive motor, 7. Control key. Detailed Implementation

[0019] The following description, in conjunction with the accompanying drawings, describes the welding seam bending device of this utility model, which is applicable to irregularly shaped sheet metal.

[0020] In Embodiment 1 of this application, as Figures 1 to 4 As shown, this welding seam bending device for irregularly shaped sheet metal (hereinafter referred to as "the present invention") includes an upper bending plate 1, an L-shaped lower bending plate 2, a lower bending plate handle 4, and a bending plate shaft 5. The upper bending plate 1 is movably connected to the L-shaped lower bending plate 2 through the bending plate shaft 5. The upper bending plate handle 3 is fixedly installed on the upper part of the upper bending plate 1. The lower bending plate handle 4 is screwed to the outer side of the L-shaped lower bending plate 2. A screw hole is opened on the surface of the upper bending plate 1 corresponding to the screw of the lower bending plate handle 4. A limiting block 25 is fixedly installed on the side of the L-shaped lower bending plate 2 facing the upper bending plate 1. A bending groove 24 is reserved between the side of the limiting block 25 and the L-shaped lower bending plate 2. A bending relief groove 23 is opened on the surface of the L-shaped lower bending plate 2 in front of the bending groove 24. A pre-bending roller 21 and a bending roller 22 pointing to the bending relief groove 23 are respectively installed on the L-shaped lower bending plate 2. The connection between the upper bending plate 1 and the L-shaped lower bending plate 2 is provided with staggered toothed plates or a gentle slope; the surface of the limiting block 25 has a groove for installing the bending drive roller 26, and the lower surface of the upper bending plate 1 corresponding to the bending drive roller 26 is provided with a sheet metal pressure roller 11. The bending drive motor 6 drives the bending drive roller 26 through a bevel gear and a transmission shaft.

[0021] A sheet metal bending machine for GGD cabinet processing (hereinafter referred to as "the patent") with utility model announcement number CN215508683U achieves the effect of positioning the sheet metal part located outside the bending machine body and keeping the bent sheet metal part stable by setting up an air pipe, vacuum suction cup and vacuum pump body. Although the bending equipment proposed by the above-mentioned prior art can perform bending, it is not suitable for the irregular edge of the tricycle canopy and cannot adapt to the processing of the canopy sheet metal parts. The present invention clamps the sheet metal with an upper bending plate 1 and an L-shaped lower bending plate 2, and pushes the upper bending plate 1 and the L-shaped lower bending plate 2 along the predetermined weld seam by a moving bending drive roller 26 and a sheet metal pressure roller 11, so that the edge of the sheet metal is bent. It can quickly bend the predetermined weld seam of the sheet metal part, effectively reduce the production process, improve product quality, and has extremely low cost. At the same time, due to the simple structure and small size of the present invention, it can effectively adapt to the sheet metal bending work of various types of tricycle canopy.

[0022] This second embodiment is basically the same in structure as the first embodiment, the difference being that, as Figure 5 As shown, the pre-bending roller 21 includes a roller 211, a roller telescopic rod 212, and a bearing 215. The roller telescopic rod 212 is inserted into a pre-set through hole in the L-shaped lower bending plate 2. The slider on the side of the roller telescopic rod 212 moves back and forth in the telescopic rod limiting groove 213. The bearing 215 is fixedly installed at the lower end of the pre-set through hole in the L-shaped lower bending plate 2. The screw 214 passes through the bearing 215 and is screwed into the lower end of the roller telescopic rod 212. The roller 211 is installed at the upper end of the roller telescopic rod 212 through a rotating shaft. The pre-bending roller 21 and the bending roller 22 have the same structure.

[0023] To further optimize the working efficiency of this application, prevent slippage, and improve the grip, the upper bending plate handle 3 and the lower bending plate handle 4 are covered with rubber sleeves. For easier sheet metal bending, the roller 211 is a steel roller with sharp edges.

[0024] When using it, simply install the welding seam bending device suitable for irregularly shaped sheet metal and apply oil to the equipment, and it will be ready for use.

[0025] When this utility model is used, its specific operation is as follows:

[0026] In use, first rotate the lower bending plate handle 4 to disengage the screw of the lower bending plate handle 4 from the screw hole of the upper bending plate 1. With the bending plate pivot 5 as the axis, unfold the upper bending plate 1 and the L-shaped lower bending plate 2, aligning the lower surface of the upper bending plate 1 with the bending groove 24. Using a screwdriver or manually turning the screw 214, the roller telescopic rod 212 slides downwards along the telescopic rod limiting groove 213 under the control of the screw 214, allowing the pre-bending roller 21 to make room for the sheet metal. The bending roller 22 is operated in the same way. Next, insert the edge of the sheet metal into the bending groove 24, and reset the pre-bending roller 21 and bending roller 22. Then, hold the upper bending plate handle 3 and the lower bending plate handle 4 with both hands to fold the upper bending plate 1 and the L-shaped lower bending plate 2, so that the sheet metal in the bending groove 23 is folded. Then... Tighten the screw of the bending plate handle 4 to re-screw it into the screw hole of the upper bending plate 1, thus fixing the upper bending plate 1 and the L-shaped lower bending plate 2. Then, press the control key 7 on the upper bending plate handle 3 to supply power to the bending drive motor 6 through the external power supply line. The bending drive motor 6 drives the bending drive roller 26 through the bevel gear and the transmission shaft. The bending drive roller 26, in cooperation with the sheet metal pressure roller 11, pushes the upper bending plate 1 and the L-shaped lower bending plate 2 forward along the edge of the sheet metal. As it moves forward, the flat edge of the sheet metal gradually converges under the action of the bending groove 23. After entering the bending groove 23, the pre-bending roller 21 first performs the first bending and shaping of the sheet metal, and then the bending roller 22 performs the second bending and shaping. Finally, it enters the bending groove 24. After passing through the bending groove 24, the edge folding is completed. After the folding is completed, the upper bending plate 1 and the L-shaped lower bending plate 2 can be re-unfolded and removed. When the upper bending plate 1 and the L-shaped lower bending plate 2 move along the edge of the sheet metal, the operator controls the forward direction of the upper bending plate 1 and the L-shaped lower bending plate 2 through the upper bending plate handle 3 and the lower bending plate handle 4 to ensure that the folding width can be used for welding operations.

[0027] It should be noted that when installing the sheet metal, simply unfold the upper bending plate 1 and the L-shaped lower bending plate 2. When removing it, the upper bending plate 1 needs to be folded outwards so that the L-shaped lower bending plate 2 can be removed downwards.

[0028] Since the sheet metal thickness is no more than 0.6 to 1 millimeter, it is not difficult to control manually.

[0029] In summary, the welding seam bending device for irregularly shaped sheet metal according to this utility model embodiment clamps the sheet metal with an upper bending plate 1 and an L-shaped lower bending plate 2, and pushes the upper bending plate 1 and the L-shaped lower bending plate 2 along the predetermined weld seam through a moving bending drive roller 26 and a sheet metal pressure roller 11, so that the edge of the sheet metal is bent. It can quickly bend the predetermined weld seam of the sheet metal parts, effectively reduce production steps, improve product quality, and has extremely low cost.

[0030] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A welding seam bending device for special-shaped sheet metal, comprising an upper bending plate (1) and a bending drive motor (6), characterized in that, The upper bending plate (1) is movably connected to the L-shaped lower bending plate (2) via a bending plate pivot (5). An upper bending plate handle (3) is fixedly installed on the upper part of the upper bending plate (1). A lower bending plate handle (4) is screwed onto the outer side of the L-shaped lower bending plate (2). A screw hole is opened on the surface of the upper bending plate (1) corresponding to the screw of the lower bending plate handle (4). A limiting block (25) is fixedly installed on the side of the L-shaped lower bending plate (2) facing the upper bending plate (1). A bending groove is reserved between the side of the limiting block (25) and the L-shaped lower bending plate (2). 24) A bending chute (23) is opened on the surface of the L-shaped lower bending plate (2) in front of the bending chute (24). A pre-bending roller (21) and a bending roller (22) pointing to the bending chute (23) are respectively installed on the L-shaped lower bending plate (2). A bending drive roller (26) is installed in a groove on the surface of the limiting block (25). A sheet metal pressure roller (11) is installed on the lower surface of the upper bending plate (1) corresponding to the bending drive roller (26). The bending drive motor (6) drives the bending drive roller (26) through a bevel gear and a transmission shaft.

2. The welding seam bending device for irregularly shaped sheet metal according to claim 1, characterized in that, The connection between the upper bending plate (1) and the L-shaped lower bending plate (2) is provided with staggered toothed plates or a gentle slope.

3. The welding seam bending device for irregularly shaped sheet metal according to claim 2, characterized in that, The pre-bending roller (21) includes a roller (211), a roller telescopic rod (212), a telescopic rod limiting groove (213), a screw (214), and a bearing (215). The roller telescopic rod (212) is inserted into the pre-set through hole of the L-shaped lower bending plate (2). The slider on the side of the roller telescopic rod (212) moves back and forth in the telescopic rod limiting groove (213). The bearing (215) is fixedly installed at the lower end of the pre-set through hole of the L-shaped lower bending plate (2). The screw (214) passes through the bearing (215) and is screwed into the lower end of the roller telescopic rod (212). The roller (211) is installed at the upper end of the roller telescopic rod (212) through a rotating shaft. The pre-bending roller (21) and the bending roller (22) have the same structure.

4. The welding seam bending device for irregularly shaped sheet metal according to claim 1, characterized in that, The upper bending plate handle (3) and the lower bending plate handle (4) are covered with rubber sleeves.

5. The welding seam bending device for irregularly shaped sheet metal according to claim 3, characterized in that, The roller (211) is a steel roller with sharp edges.

Images