Laser welding production line for sheet metal

Abstract

The utility model relates to a kind of plate laser welding production line pre-positioning system, including two groups of identical structure and symmetrically arranged pre-positioning mechanism in the production line frame body two sides, the pre-positioning mechanism includes lifting frame body, swing arm, mounting beam and moving component, wherein lifting frame body is arranged in the production line frame body inside, swing arm rear portion is rotatably connected with the lifting frame body, front end is fixedly connected with the mounting beam, and multiple moving components are arranged on the mounting beam;The moving component includes moving seat, and the moving seat is movably arranged on the mounting beam, and the moving seat upper end is equipped with positioning device, and the positioning device is equipped with movable positioning arm, and when plate pre-positioning, the positioning arm is in contact with the corresponding side plate pad block.The utility model can automatically adjust the position of positioning device according to the condition of plate, thereby improving production efficiency and use flexibility.

Description

Technical Field

[0001] This utility model relates to the field of metal sheet production, specifically a pre-positioning system for a laser welding production line for sheet metal. Background Technology

[0002] Before laser welding metal sheets, pre-positioning of the sheets is necessary. For laser welding production lines, this typically involves placing L-shaped plate blocks on either side of the pre-positioning station. Once the sheet material enters the station, its two sides rest on the corresponding plate blocks. Then, positioning devices located on both sides of the production line frame activate, causing positioning shafts to extend synchronously and press against the plate blocks. This clamps the sheet material, achieving pre-positioning where the sheet's centerline coincides with or is parallel to the production line center. However, in existing technologies, the positioning devices on both sides of the production line frame are usually fixed and cannot be flexibly adjusted according to the sheet size. If the sheet size does not match the number or layout of the positioning devices, disassembly and reinstallation are often required, significantly impacting production efficiency.

[0003] Patent CN113953694B discloses a laser welding pre-positioning device. When it is working, the positioning bracket slides along the first track, the second track and the third track respectively. Then, the plate that needs to be pre-positioned is placed on the pad at the top of each positioning bracket by a vacuum suction cup to achieve the pre-positioning operation of the plate. However, this device is mainly for feeding with the clamp feeder and cannot be used on the laser welding production line, especially as it will affect the normal transmission of the production line. Utility Model Content

[0004] The purpose of this invention is to provide a pre-positioning system for a laser welding production line for sheet metal, which can automatically adjust the position of the positioning device according to the condition of the sheet metal, thereby improving production efficiency and flexibility of use.

[0005] The objective of this utility model is achieved through the following technical solution: A pre-positioning system for a plate laser welding production line includes two sets of identical pre-positioning mechanisms symmetrically arranged on both sides of the production line frame. Each pre-positioning mechanism includes a lifting frame, a swing arm, a mounting beam, and moving components. The lifting frame is vertically movable inside the production line frame. The rear of the swing arm is rotatably connected to the lifting frame, and the front end is fixedly connected to the mounting beam. Multiple sets of moving components are provided on the mounting beam. Each moving component includes a moving seat, which is movably mounted on the mounting beam. A positioning device is provided at the upper end of the moving seat, and the positioning device has a movable positioning arm. When the plate is pre-positioned, the positioning arm abuts against the plate pad on the corresponding side.

[0006] The moving component includes a moving drive device and a moving gear, wherein the moving gear is located inside the moving base, the moving drive device is located at the lower end of the moving base, the moving gear is driven to rotate by the moving drive device, the moving base is slidably connected to the mounting beam, the mounting beam is provided with a moving rack, and the moving gear meshes with the moving rack.

[0007] The movable seat is provided with a movable seat end plate, and a movable slider is provided on the lower side of the movable seat end plate. The upper end of the mounting beam is provided with a movable slide rail, and the movable slider cooperates with the movable slide rail.

[0008] The movable seat is equipped with a cable bracket on its outer side.

[0009] The swing arm is provided with a swing arm hinge seat at the rear, and the upper end of the lifting frame is provided with a frame beam. The swing arm hinge seat is rotatably connected to the frame beam. The lifting frame is provided with a swing arm drive device inside, and the swing arm is driven to swing through the swing arm drive device.

[0010] The rear end of the swing arm is provided with a counterweight assembly, which includes a counterweight frame. The upper end of the counterweight frame is rotatably connected to the rear end of the swing arm, and the lower end of the counterweight frame is provided with a counterweight block.

[0011] The lower end of the counterweight frame is provided with a support platform, and the support platform is provided with a counterweight screw. Each counterweight block is stacked on the support platform and is fitted onto the counterweight screw.

[0012] The advantages and positive effects of this utility model are as follows: 1. Compared with the existing technology where the positioning devices on both sides of the upper end of the production line frame are fixed, this utility model can flexibly adjust the position of each positioning device by using each moving component. Especially when changing the shape of the board (changing the board pad to a different length), there is no need to disassemble and reinstall each positioning device, thereby improving production efficiency and usage flexibility.

[0013] 2. The lifting frame of this utility model can be adjusted to adjust the height of the mounting beam, thereby adjusting the height of the positioning device, so as to ensure that the positioning device can be aligned with the plate pad.

[0014] 3. When the present invention is used for replacing plate pads or performing maintenance, the lifting frame can be lowered to lower the mounting beam and moving components. Then the swing arm can be rotated inward to retract into the production line frame, so as not to affect the workers to perform the corresponding operations. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the utility model. Figure 2 for Figure 1 A three-dimensional structural diagram of the pre-positioning mechanism on either side of the center. Figure 3 for Figure 2 Enlarged view of point A in the image. Figure 4 for Figure 2 The K-direction view of the positioning component. Figure 5 for Figure 4 Enlarged view of point B in the image.

[0016] Among them, 1 is a moving component, 101 is a moving drive device, 102 is a moving seat, 1021 is a moving seat end plate, 103 is a positioning device, 1031 is a positioning arm, 104 is a moving slider, 105 is a moving gear, 106 is a cable bracket, 2 is a plate pad, 3 is a swing arm, 301 is a swing arm hinge seat, 4 is a lifting frame, 5 is a counterweight component, 501 is a counterweight frame, 502 is a counterweight screw, 503 is a support platform, 6 is a swing arm drive device, 7 is a mounting beam, 701 is a moving rack, and 702 is a moving slide rail. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] like Figure 1 As shown, this utility model includes two sets of pre-positioning mechanisms with identical structures, symmetrically arranged on both sides of the production line frame, such as... Figures 2-5 As shown, the pre-positioning mechanism includes a lifting frame 4, a swing arm 3, a mounting beam 7, and moving components 1. The lifting frame 4 is vertically and movably located inside the production line frame. The rear of the swing arm 3 is rotatably connected to the lifting frame 4, and its front end is fixedly connected to the mounting beam 7. Multiple sets of moving components 1 are mounted on the mounting beam 7. Figure 3 and Figure 5 As shown, the movable component 1 includes a movable base 102, which is movably mounted on the mounting beam 7. The upper end of the movable base 102 is provided with a positioning device 103, and the positioning device 103 is provided with a movable positioning arm 1031.

[0019] like Figure 3 and Figure 5As shown, in this embodiment, the moving component 1 includes a moving drive device 101 and a moving gear 105. The moving gear 105 is located inside the moving base 102, and the moving drive device 101 is located at the lower end of the moving base 102. The moving gear 105 is driven to rotate by the moving drive device 101. The moving base 102 is slidably connected to the mounting beam 7, and the mounting beam 7 is provided with a moving rack 701. The moving gear 105 meshes with the moving rack 701. When this utility model is in operation, the moving gear 105 moves along the moving rack 701, thereby driving the moving base 102 and the entire moving component 1 to move along the mounting beam 7. In this embodiment, the moving drive device 101 can be a geared servo motor or similar device, and the geared servo motor can be equipped with components such as an encoder to realize motor speed detection and movement control, which is a well-known technology in the art.

[0020] like Figure 3 and Figure 5 As shown, in this embodiment, the movable seat 102 is provided with a movable seat end plate 1021, and the movable seat end plate 1021 is provided with a movable slider 104 on its lower side. The upper end of the mounting beam 7 is provided with a movable slide rail 702, and the movable slider 104 cooperates with the movable slide rail 702.

[0021] like Figure 3 and Figure 5 As shown, in this embodiment, the positioning device 103 internally includes a positioning arm drive device for driving the positioning arm 1031 to move. The positioning arm drive device can be a suitable device as needed, such as a linear drive device like an electric push rod to drive the positioning arm 1031 to extend and retract, or a geared servo motor to drive the positioning arm 1031 to swing. The positioning device 103 is a technology known in the art.

[0022] like Figure 3 and Figure 5 As shown, in this embodiment, a cable bracket 106 is provided on the outside of the movable base 102 to fix various cables, thereby ensuring that the cables can move with the movable component 1.

[0023] like Figure 1 As shown in this embodiment, the production line frame is equipped with a lifting drive device inside to drive the lifting frame 4 to lift. The lifting drive device can be a linear drive device such as a cylinder or hydraulic cylinder as needed, and the number of the lifting drive devices can be set as needed to ensure that the lifting frame as a whole can lift vertically and smoothly.

[0024] like Figure 4As shown, in this embodiment, the swing arm 3 has a swing arm hinge seat 301 at its rear, the lifting frame 4 has a frame beam at its upper end, and the swing arm hinge seat 301 is rotatably connected to the frame beam via a rotating shaft. The lifting frame 4 has a swing arm drive device 6 inside, and the swing arm 3 is driven to swing by the swing arm drive device 6. The swing arm drive device 6 can be a linear drive device such as a cylinder or hydraulic cylinder. The power shaft end of the swing arm drive device 6 is rotatably connected to the front end of the swing arm 3 via a first hinge shaft, and the lower end of the swing arm drive device 6 is rotatably connected to the hinge seat located inside the lifting frame 4 via a second hinge shaft. When this invention is in operation, the lifting frame 4 drives the swing arm drive device 6, the swing arm 3, the mounting beam 7, and other structures to rise synchronously. After reaching the desired position, the swing arm drive device 6 then drives the swing arm 3 to swing outward.

[0025] like Figure 1 and Figure 4 As shown, since the mounting beam 7 is equipped with a large number of moving components 1 (32 sets in this embodiment), a counterweight assembly 5 is provided at the rear end of the swing arm 3 to balance the weight. In this embodiment, the counterweight assembly 5 includes a counterweight frame 501, and the upper end of the counterweight frame 501 is rotatably connected to the rear end of the swing arm 3 through a hinge, and a counterweight block is provided at the lower end of the counterweight frame 501.

[0026] like Figure 4 As shown, in this embodiment, the lower end of the counterweight frame 501 is provided with a support platform 503, and the support platform 503 is provided with a counterweight screw 502. Each counterweight block is stacked on the support platform 503 and is fitted onto the counterweight screw 502. In this way, the number of counterweight blocks can be flexibly adjusted as needed.

[0027] The working principle of this utility model is as follows: The working process of this utility model is as follows: 1. The sheet material is moved to the pre-positioned station on the production line frame. At this time, if... Figure 2 As shown, the two sides of the plate are respectively placed on the plate pad 2 with an L-shaped cross section on the corresponding sides, which is a well-known technology in the field.

[0028] II. Figures 4-5 As shown, the lifting frame 4 rises to a set height, and then the swing arm 3 swings outward so that the positioning device 103 on the mounting beam 7 located at the upper end of the moving component 1 can be aligned with the plate pad 2 on the corresponding side.

[0029] III. Figures 2-3As shown, each movable component 1 on the mounting beam 7 is adjusted according to the size of the plate (i.e., the length of the plate pad 2). During adjustment, the movable drive device 101 on each movable component 1 is activated to drive the movable gear 105 to rotate. The movable gear 105 moves along the movable rack 701, thereby realizing the movement adjustment of each movable component 1. In addition, the movable drive device 101 (reduction servo motor) can be equipped with encoders and other detection elements as needed for real-time detection, thereby realizing the movement distance control of the movable component 1.

[0030] Fourth, after each moving component 1 completes its movement adjustment, the positioning device 103 at the upper end of the moving component 1 is activated to make the positioning arm 1031 move synchronously and abut against the corresponding side plate pad 2, so that the plate pads 2 on both sides clamp and limit the plate position, thereby achieving the pre-positioning purpose of the plate centerline coinciding with or paralleling the production line center.

[0031] Compared to existing technologies where the positioning devices on both sides of the upper part of the production line frame are fixed, this invention allows for flexible adjustment of the positions of each positioning device 103 using various movable components 1. This is especially beneficial when changing sheet metal (changing the sheet metal pads 2 to different lengths), eliminating the need to disassemble and reinstall each positioning device 103, thus improving production efficiency and operational flexibility. Secondly, the lifting frame 4 of this invention can adjust the height of the mounting beam 7, thereby adjusting the height of the positioning device 103. The rising of the lifting frame 4 and the swinging of the swing arm 3 ensure that the positioning device 103 is aligned with the sheet metal pad 2. When replacing the sheet metal pad 2 or performing maintenance, the lifting frame 3 can descend, lowering the mounting beam 7 and movable components 1 to a set height. Then, the swing arm 3 can rotate inward to retract the mounting beam 7 and movable components 1 back into the production line frame, ensuring uninterrupted operation for the personnel.

Claims

1. A pre-positioning system for a laser tailored blank line, characterized in that: The system includes two sets of pre-positioning mechanisms with identical structures symmetrically arranged on both sides of the production line frame. The pre-positioning mechanism includes a lifting frame (4), a swing arm (3), a mounting beam (7), and a moving component (1). The lifting frame (4) is vertically and vertically arranged inside the production line frame. The rear of the swing arm (3) is rotatably connected to the lifting frame (4), and the front end is fixedly connected to the mounting beam (7). The mounting beam (7) is provided with multiple sets of moving components (1). The moving component (1) includes a moving seat (102), and the moving seat (102) is movably arranged on the mounting beam (7). The upper end of the moving seat (102) is provided with a positioning device (103), and the positioning device (103) is provided with a movable positioning arm (1031). When the plate is pre-positioned, the positioning arm (1031) abuts against the plate pad (2) on the corresponding side.

2. The sheet laser weld-on production line pre-positioning system of claim 1, wherein: The moving component (1) includes a moving drive device (101) and a moving gear (105), wherein the moving gear (105) is located inside the moving seat (102), the moving drive device (101) is located at the lower end of the moving seat (102), the moving gear (105) is driven to rotate by the moving drive device (101), the moving seat (102) is slidably connected to the mounting beam (7), the mounting beam (7) is provided with a moving rack (701), and the moving gear (105) meshes with the moving rack (701).

3. The pre-positioning system for a laser blank welding production line according to claim 2, characterized in that: The movable seat (102) is provided with a movable seat end plate (1021), and a movable slider (104) is provided on the lower side of the movable seat end plate (1021). The upper end of the mounting beam (7) is provided with a movable slide rail (702), and the movable slider (104) cooperates with the movable slide rail (702).

4. The sheet laser weld-on production line pre-positioning system of claim 1, wherein: The movable base (102) is provided with a cable bracket (106) on its outer side.

5. The sheet laser weld-on production line pre-positioning system of claim 1, wherein: The swing arm (3) is provided with a swing arm hinge seat (301) at the rear, the lifting frame (4) is provided with a frame beam at the upper end, and the swing arm hinge seat (301) is rotatably connected to the frame beam. The lifting frame (4) is provided with a swing arm drive device (6) inside, and the swing arm (3) is driven to swing by the swing arm drive device (6).

6. The sheet laser weld-on production line pre-positioning system of claim 1, wherein: The rear end of the swing arm (3) is provided with a counterweight assembly (5), the counterweight assembly (5) includes a counterweight frame (501), and the upper end of the counterweight frame (501) is rotatably connected to the rear end of the swing arm (3), and the lower end of the counterweight frame (501) is provided with a counterweight block.

7. The pre-positioning system for a laser blank welding production line according to claim 6, characterized in that: The counterweight frame (501) has a support platform (503) at its lower end, and a counterweight screw (502) is provided on the support platform (503). Each counterweight block is stacked on the support platform (503) and is fitted onto the counterweight screw (502).

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