Double-station high-precision automatic welding equipment

Abstract

The utility model discloses double-station high-precision automatic welding equipment in the technical field of welding equipment, which comprises a feeding frame, a clamping cylinder, a positioning frame, an overturning cylinder, a multi-shaft mechanical arm and a welding machine, the welding machine is fixed without moving a welding point, the welding operation can be stably carried out on a workpiece, the stronger pressing force can be supported, and the welding efficiency is improved. A hydraulic machine is used for pressing and welding, the welding force is larger than that of clamping and welding, clamping and welding are completed at the same point position while clamping is conducted, an additional clamp is not needed, the device clamps a workpiece and welds a plurality of point positions at a time according to the steps, the device is particularly suitable for the workpiece with multiple points needing to be welded, welding is conducted on the single side in sequence during welding, and the welding efficiency is greatly improved. All the clamped workpieces are turned over synchronously through the turning shaft, the two faces of each workpiece can be welded after being clamped at a time, the workpieces do not need to be loosened, clamping and positioning are accurate, the clamping devices of the device are each provided with a plurality of positioning devices, stable welding can be achieved, welding spots can be sequentially welded in sequence, and the welding efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a dual-station high-precision automatic welding device. Background Technology

[0002] Welding of workpieces requires welding equipment. To improve efficiency, automated welding equipment is generally used, with automatic welding machines being the most common.

[0003] This type of welding equipment typically combines a welding machine with a robotic arm, enabling the welding machine to weld two pieces of a workpiece according to the movement of the robotic arm. Generally, a clamp is used to hold the workpiece in place, and the welding operation is performed at the marked points on the workpiece.

[0004] This welding method requires clamping, which means both sides of the workpiece's welding point need to be exposed, and sufficient operating space must be reserved for the welding machine. This results in a large footprint. Moreover, the clamping force of the welding method is not as stable as that of a stable support platform, which may lead to an unstable weld. These situations can cause abnormalities in the workpiece welding, especially for thicker workpieces that need to be welded on both sides. However, the welding machine can only weld on one side. This requires clamping the workpiece first and then welding both sides of the workpiece simultaneously, which is cumbersome and complicated. It requires fixtures and welding clamps, and this method is also unstable.

[0005] Based on this, this utility model designs a dual-station high-precision automatic welding device to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a high-precision automatic welding device with dual workstations, which can conveniently perform welding operations on workpieces without moving the welding points. Furthermore, because the welding machine's support frame is a fixed frame, it can support stronger pressing pressure. Hydraulic press welding has greater force than clamping welding, and the clamping and welding operations are completed in one step, resulting in a more secure weld without the need for additional fixtures. This device can also clamp workpieces and weld multiple points in one step, making it particularly suitable for workpieces requiring welding at multiple points. During welding, this device can weld sequentially on one side, then rotate all clamped workpieces synchronously via a flipping shaft to weld the other side. Moreover, the clamping device of this device is equipped with multiple positioning devices, which not only prevents mistaken clamping of the workpiece but also ensures stable welding, strong welding force, and good welding results.

[0007] This utility model is implemented as follows: a dual-station high-precision automatic welding device, comprising:

[0008] Loading rack, clamping cylinder, positioning frame, tilting cylinder, multi-axis robotic arm, welding machine and slide plate;

[0009] The loading rack is a horizontal workbench with a hanging rod on the front side. The hanging rod is a vertical rod that extends out from the front side of the loading rack.

[0010] The operating end of the multi-axis robotic arm is equipped with a mounting plate, which is horizontally positioned.

[0011] The welding machine is an automatic welding machine. The welding machine is equipped with a welding rod and a support frame. The welding rod is vertically raised and lowered above the support frame by a hydraulic rod.

[0012] The tilting cylinder is horizontally arranged on the top of the mounting plate in the left-right direction. The telescopic end of the tilting cylinder is connected to a rack. The rack is driven by the tilting cylinder to slide horizontally on the top of the mounting plate in the left-right direction.

[0013] The positioning frame is a straight plate, which is vertically installed on the top of the rear edge of the mounting plate. A bearing is fixedly installed on the mounting plate, and both ends of the bearing penetrate the front and rear sides of the mounting plate. A flipping shaft is inserted into the inner ring of the bearing. The flipping shaft is horizontally installed in the front-rear direction, and both ends of the flipping shaft extend out from the front and rear sides of the positioning frame, respectively. The rear end of the flipping shaft is fixedly connected to a clamping frame plate, which is vertically installed.

[0014] Two clamping cylinders are also provided on the rear side of the clamping frame plate. Both clamping cylinders are horizontally arranged and are respectively located on the left and right sides of the clamping frame plate. The extension and retraction ends of both clamping cylinders are both arranged inward.

[0015] A gear is provided at the front end of the flipping shaft, the gear is positioned above the rack, and the gear meshes with the rack for transmission;

[0016] The slide plate is an inclined guide plate, and a finished product frame is provided at the lower end of the slide plate, with the lower end of the slide plate directly above the finished product frame.

[0017] Furthermore, a feeding plate is vertically installed on the top of the feeding rack, and the front side of the feeding plate is flush with the front side wall of the feeding rack; two hanging rods are installed on each feeding plate; the hanging rods on the same feeding plate are of the same length, and the two hanging rods are at the same height on the same vertical plane;

[0018] The hanging rod is installed on the front side of the feeding plate. The hanging rod is a round rod, and a square plate is fixed at the bottom of the hanging rod.

[0019] The diameter of the hanging rod is smaller than the side length of the square plate.

[0020] Furthermore, the extension and retraction ends of the two clamping cylinders are on the same straight line, and the extension and retraction directions of the two clamping cylinders are opposite to each other;

[0021] A limiting plate is horizontally provided on the top and bottom edges of the clamping frame plate. The limiting plate is a flat plate, and both limiting plates extend horizontally to the rear side of the clamping frame plate, with the distance d from which the limiting plates extend backward not exceeding 1cm.

[0022] Furthermore, a guide groove is fixedly provided on the top of the mounting plate. The guide groove is a U-shaped groove with openings on the top and both sides. The rack is horizontally slidable in the groove of the guide groove in the left and right direction.

[0023] The mounting plate is also provided with a stop block, which blocks the rack at the end point of its extended state.

[0024] A limiting ring is also provided on each of the two ends of the gear. The limiting rings block the two ends of the gear tooth groove, and the maximum diameter of the gear is smaller than the gear diameter.

[0025] Furthermore, two positioning frames are provided on the mounting plate, and the two positioning frames are respectively located on the left and right sides of the mounting plate;

[0026] Each of the positioning frames is equipped with a clamping cylinder and a gear, and the gears installed on both positioning frames mesh with the same rack.

[0027] The beneficial effects of this utility model are: 1. This device is equipped with two sets of clamping cylinders for clamping workpieces on a mounting plate. The workpieces are clamped by the clamping cylinders, and the workpieces can be flipped over by the flipping cylinder and the flipping shaft, so that both the upper and lower sides of the workpieces can be welded.

[0028] 2. This device uses a multi-axis robotic arm to move the workpiece. During welding, the welding machine does not move; only the workpiece needs to be moved horizontally. The operation is simple. Since the welding machine is fixed, it can be welded by conventional hydraulic pressure, resulting in greater welding force. The workpiece only needs to be moved horizontally between the welding rod and the support frame. No additional clamping device or clamping method is required. Pressing is sufficient for synchronous welding, resulting in good welding effect.

[0029] 3. This device enables automated multi-point welding and simultaneous welding of multiple workpieces. It is fully automatic, convenient to weld, and uses a simpler mechanism to complete workpieces that are difficult to weld. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0032] Figure 2 This is a top view of the mounting plate structure of this utility model;

[0033] Figure 3 This is a schematic diagram of the side structure of the mounting plate of this utility model;

[0034] Figure 4 This is a top view of the feeding rack structure of this utility model.

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1-Feeding rack, 11-Feeding plate, 12-Hanging rod, 2-Clamping cylinder, 21-Clamping frame plate, 22-Limiting plate, 23-Positioning frame, 24-Bearing, 3-Tilting cylinder, 31-Rack, 32-Gear, 321-Limiting ring, 33-Guide groove, 34-Tilting shaft, 35-Stop block, 4-Multi-axis robotic arm, 41-Setting plate, 5-Welding machine, 51-Welding rod, 52-Support frame, 6-Slide plate, 61-Finished product frame. Detailed Implementation

[0037] Please see Figures 1 to 4 As shown, this utility model provides a high-precision automatic welding device with two workstations. In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] In a specific embodiment of the technical solution of this utility model:

[0039] It includes a feeding rack 1, a clamping cylinder 2, a positioning frame 23, a tilting cylinder 3, a multi-axis robotic arm 4, a welding machine 5, and a sliding plate 6;

[0040] The loading rack 1 is a horizontal workbench. A hanging rod 12 is installed on the front side of the loading rack 1. The hanging rod 12 is a vertical rod and extends out of the front side of the loading rack 1.

[0041] The top of the feeding rack 1 is also vertically equipped with a feeding plate 11, the front side of which is flush with the front side wall of the feeding rack 1; each feeding plate 11 is equipped with two hanging rods 12; the hanging rods 12 on the same feeding plate 11 are of the same length, and the two hanging rods 12 are at the same height on the same vertical plane; this facilitates the stable hanging of the physical object to be welded by the two hanging rods 12. The material needs to be on a flat plate, and the flat plate should preferably have two holes that match and align with the hanging rods 12 to position the material. Moreover, the two-point positioning can ensure that the material remains stable.

[0042] The hanging rod 12 is installed on the front side of the feeding plate 11. The hanging rod 12 is a round rod, and a square plate is fixed at the bottom of the hanging rod 12.

[0043] The diameter of the hanging rod 12 is smaller than the side length of the square plate. The hanging rod 12 is used to position and hook the workpiece, thereby loading the workpiece. The hanging rod 12 does not contact the clamping cylinder 2, so they do not interfere with each other. The clamping cylinder 2 clamps the workpiece from the left and right sides, which does not affect the welding operation on the upper and lower sides, nor does it affect the loading and positioning of the hanging rod 12. The design is reasonable.

[0044] The operating end of the multi-axis robotic arm 4 is equipped with a mounting plate 41, which is horizontally positioned. The mounting plate 41 is moved to the set point by the multi-axis robotic arm 4, so it can lift the material for translation and movement, and can be conveniently positioned and welded on the welding machine 5. In addition, all the devices on the mounting plate 41 can be carried to the set point for welding operation.

[0045] The welding machine 5 is an automatic welding machine. The welding machine 5 is equipped with a welding rod 51 and a support frame 52. The welding rod 51 can be vertically raised and lowered and is positioned directly above the support frame 52 via a hydraulic rod.

[0046] The tilting cylinder 3 is horizontally set on the top of the mounting plate 41 in the left and right direction. The telescopic end of the tilting cylinder 3 is connected to the rack 31. The rack 31 is driven by the tilting cylinder 3 to slide horizontally on the top of the mounting plate 41 in the left and right direction.

[0047] The positioning frame 23 is a straight plate, which is vertically set on the top of the rear edge of the mounting plate 41. A bearing 24 is fixedly installed on the mounting plate 41, and both ends of the bearing 24 penetrate the front and rear sides of the mounting plate 41. A flipping shaft 34 is inserted into the inner ring of the bearing 24. The flipping shaft 34 is stably mounted above the mounting plate 41 through the bearing 24 and the positioning frame 23. The gear 32 and the clamping frame plate 21 are respectively set on the front and rear sides of the positioning frame 23. The flipping shaft 34 is set horizontally in the front and rear direction, and both ends of the flipping shaft 34 extend out from the front and rear sides of the positioning frame 23. The rear end of the flipping shaft 34 is fixedly connected to the clamping frame plate 21, which is set vertically.

[0048] Two clamping cylinders 2 are also provided on the rear side of the clamping frame plate 21. Both clamping cylinders 2 are horizontally arranged and are respectively located on the left and right sides of the clamping frame plate 21, and the extension and retraction ends of both clamping cylinders 2 are set inward.

[0049] The extension and retraction ends of the two clamping cylinders 2 are on the same straight line, and the extension and retraction directions of the two clamping cylinders 2 are opposite. This can keep the workpiece position consistent during clamping, and the height position of the clamping cylinders 2 is also the same, so the clamping is stable.

[0050] A limiting plate 22 is horizontally set on both the top and bottom edges of the clamping frame plate 21. The limiting plate 22 is a flat plate, and both limiting plates 22 extend horizontally to the rear side of the clamping frame plate 21, with the distance d from the rearward extension of the limiting plate 22 not exceeding 1cm. The welding machine remains stationary, and welding is performed from top to bottom, which allows for tighter welding, resulting in greater stability and welding force compared to lateral double-sided clamping welding.

[0051] A gear 32 is provided at the front end of the flipping shaft 34. The gear 32 is located above the rack 31. The gear 32 meshes with the rack 31 for transmission. The clamping frame plate 21 is driven to flip along the horizontal axis by the flipping shaft 34 and the gear 32.

[0052] A guide groove 33 is also fixedly installed on the top of the mounting plate 41. The guide groove 33 is a U-shaped groove with openings on the top and both sides. The rack 31 is horizontally slidable in the groove of the guide groove 33 in the left and right directions.

[0053] A stop 35 is also provided on the mounting plate 41. The stop 35 blocks the end point of the extended state of the rack 31. The stop 35 limits the extension length of the rack 31 to prevent the rack 31 or the tilting cylinder 3 from malfunctioning and causing the clamping plate 21 to tilt excessively.

[0054] A limiting ring 321 is also provided on each of the two end faces of the gear 32. The limiting ring 321 blocks the two ends of the tooth groove of the gear 32, and the maximum diameter of the gear 32 is smaller than the gear diameter. This ensures that the rack 31 moves stably, its extension and contraction remain flat, and the meshing between the rack 31 and the gear 32 remains stable and will not slip. The top of the rack 31 is limited in the front and rear directions by the limiting ring 321, while the bottom of the rack 31 is limited by the guide groove 33. This ensures that the meshing between the rack 31 and the gear 32 is stable, and that both translation and rotation are stable. This ensures that the rotation of the flipping shaft 34 is stable and that the workpiece flipping angle is accurate.

[0055] Two positioning frames 23 are provided on the mounting plate 41, and the two positioning frames 23 are respectively located on the left and right sides of the mounting plate 41;

[0056] Each positioning frame 23 is equipped with a clamping cylinder 2 and a gear 32. The gears 32 installed on the two positioning frames 23 mesh with the same rack 31. The device structures on the two positioning frames 23 are the same. This ensures that when the gears 32 of the left and right positioning frames 23 are driven to flip, the rotation angle of the two gears 32 remains consistent, thereby ensuring the stability of the flipping shaft 34. This also ensures that the workpiece flipping angle is accurately positioned and the material is fed smoothly.

[0057] The slide plate 6 is an inclined guide plate, and a finished product frame 61 is also provided at the lower end of the slide plate 6, with the lower end of the slide plate 6 directly above the finished product frame 61.

[0058] It should be noted that:

[0059] 1. For workpieces that generally require double-sided welding, the clamping device is usually a robotic arm, and the welding is also done by a multi-axis welding robot. Although this is more flexible, the equipment is too large and not conducive to factory production. Because welding does not have clamping force, it can only weld. Therefore, other clamps are needed to hold the edge of the welding point during welding. At this time, only the edge of the welding point is clamped on the two plates at the welding point. The welding point is positioned by the strength and shape of the workpiece material. That is to say, the welding point does not have enough clamping force. This device only needs a three-axis robotic arm, which can complete the welding operation by moving at the same horizontal height. This is also conducive to maintaining the accurate height position of the workpiece. At the same time, the welding point of this device is the clamping point of the downward pressure. The welding rod 51 clamps and welds at the same time, ensuring that the upper and lower workpieces at the welding point remain in close contact, and the weld is more solid.

[0060] 2. More importantly, some workpieces require double-sided welding. After welding one side, the other side needs to be flipped. Welding robots also perform clamp welding, which makes the welding operation too flexible and requires higher precision control. The workpiece needs to be moved away from the welding point, then flipped by the robotic arm, and then repositioned before welding again. This cannot be completed in one go by automated welding equipment, resulting in low efficiency and affecting accuracy. This device only flips once from start to finish, and the flipping operation is completed by the flipping cylinder 3. Linear positioning is more accurate, ensuring the flipping angle is accurate. Rotating motor control is more difficult. In addition, the support frame 52 of this device always remains in a fixed position. When the welding rod 51 presses down during the welding operation, it will also press down and flatten the workpiece that may be deflected, ensuring that the welding point always remains horizontal and ensuring the accuracy of the welding point position. Moreover, moving only the workpiece and not the welding machine 5 is more conducive to stability and precision, and can help reduce the possibility of error.

[0061] When using this utility model, first place two workpieces on the hanging rod 12 and stabilize the workpiece hook. This feeding method will inevitably have left and right deviations. The rear end face of the workpiece is pressed against the feeding plate 11, so that the height and front and back positions of the workpiece are already limited by the hanging rod 12 and the feeding plate 11.

[0062] Under the operation of the multi-axis robotic arm 4, the mounting plate 41 moves backward. At this time, the clamping cylinder 2 is in the open state, the clamping frame plate 21 moves backward, pushes the workpiece against the loading plate 11, and pushes the workpiece from the front and back directions to keep the front and back coordinates aligned.

[0063] Then, the clamping cylinder 2 opens and closes, repeating this process twice to center the workpiece in the gap between the loading plate 11 and the clamping frame plate 21. Finally, the clamping cylinder 2 clamps the workpiece with a force in the left and right directions. Then, the multi-axis robotic arm 4 rises, causing the workpiece to detach from the hanging rod 12. The workpiece is then clamped by the clamping cylinder 2. At the same time, the workpiece is also restricted by the upper and lower limit plates 22, forming a three-point limit on the front side through the clamping frame plate 21 and the limit plates 22, ensuring that the workpiece position is fixed. Then, the workpiece is moved horizontally onto the support frame 52, and the welding rod 51 of the welding machine 5 is pressed down by the hydraulic rod for welding. During welding, the welding rod 51 is pressed down, resulting in greater welding force and greater stability.

[0064] After welding one point, the mounting plate 41 moves continuously to the left until all points on the top plane of the two workpieces are welded. Then, the flipping cylinder 3 extends and pushes the rack 31, thereby rotating the gear 32. The flipping shaft 34 also rotates. The bearing 24 stabilizes the flipping shaft 34, and the workpiece flips under the action of the flipping shaft 34. Similarly, the entire clamping frame plate 21 and the clamping cylinder 2 flip together. The stop block 35 limits the rack 31 to ensure that the workpiece flipping angle is accurate.

[0065] After the workpiece is flipped over, the workpiece points are moved sequentially again to ensure that the welding at each point is stable.

[0066] This device does not require a welding robot or a fixture for the workpiece welding point; it only needs to hold the workpiece. During the clamping process, the welding rod 51 of this device automatically welds, completing the welding and clamping simultaneously. The welding force is also large, and the welding is accurate and stable.

[0067] The front and back referred to in this device are Figure 1 The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the purpose of facilitating the description of this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0068] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A high-precision automatic welding device with dual stations, characterized in that, include: The loading rack (1), clamping cylinder (2), positioning frame (23), tilting cylinder (3), multi-axis robotic arm (4), welding machine (5) and slide plate (6); The loading rack (1) is a workbench with a horizontal top. A hanging rod (12) is provided on the front side of the loading rack (1). The hanging rod (12) is a vertically arranged straight rod and extends out of the front side of the loading rack (1). The operating end of the multi-axis robotic arm (4) is provided with a mounting plate (41), which is horizontally positioned. The welding machine (5) is an automatic welding machine. The welding machine (5) is equipped with a welding rod (51) and a support frame (52). The welding rod (51) can be vertically raised and lowered above the support frame (52) by a hydraulic rod. The tilting cylinder (3) is horizontally arranged on the top of the mounting plate (41) in the left-right direction. The telescopic end of the tilting cylinder (3) is connected to the rack (31). The rack (31) is driven by the tilting cylinder (3) to slide horizontally on the top of the mounting plate (41) in the left-right direction. The positioning frame (23) is a straight plate, and the positioning frame (23) is vertically set on the top of the rear edge of the mounting plate (41). A bearing (24) is fixedly set on the mounting plate (41), and the two ends of the bearing (24) penetrate the front and rear sides of the mounting plate (41). A flipping shaft (34) is inserted into the inner ring of the bearing (24). The flipping shaft (34) is horizontally set in the front and rear direction, and the two ends of the flipping shaft (34) extend out on the front and rear sides of the positioning frame (23), respectively. The rear end of the flipping shaft (34) is fixedly connected to the clamping frame plate (21), and the clamping frame plate (21) is vertically set. Two clamping cylinders (2) are also provided on the rear side of the clamping frame plate (21). The two clamping cylinders (2) are both horizontally arranged. The two clamping cylinders (2) are respectively located on the left and right sides of the clamping frame plate (21), and the extension and retraction ends of the two clamping cylinders (2) are both arranged inward. A gear (32) is provided at the front end of the flipping shaft (34), the gear (32) is located above the rack (31), and the gear (32) meshes with the rack (31) for transmission; The slide plate (6) is an inclined guide plate, and a finished product frame (61) is also provided at the lower end of the slide plate (6), with the lower end of the slide plate (6) directly above the finished product frame (61).

2. The high-precision automatic welding equipment with dual stations according to claim 1, characterized in that: The top of the feeding rack (1) is also vertically provided with a feeding plate (11), the front side of the feeding plate (11) is flush with the front side wall of the feeding rack (1); each feeding plate (11) is provided with two hanging rods (12); the hanging rods (12) on the same feeding plate (11) are of the same length, and the two hanging rods (12) are at the same height position on the same vertical plane; The hanging rod (12) is installed on the front side of the feeding plate (11). The hanging rod (12) is a round rod, and a square plate is fixed at the bottom of the hanging rod (12). The diameter of the hanging rod (12) is smaller than the side length of the square plate.

3. The high-precision automatic welding equipment with dual stations according to claim 1, characterized in that: The extension and retraction ends of the two clamping cylinders (2) are on the same straight line, and the extension and retraction directions of the two clamping cylinders (2) are opposite. A limiting plate (22) is horizontally provided on the top and bottom edges of the clamping frame plate (21). The limiting plate (22) is a flat plate. Both limiting plates (22) extend horizontally to the rear side of the clamping frame plate (21), and the distance d from which the limiting plate (22) extends backward does not exceed 1 cm.

4. The high-precision automatic welding equipment with dual stations according to claim 1, characterized in that: The top of the mounting plate (41) is also fixedly provided with a guide groove (33), which is a U-shaped groove with openings on the top and left and right sides. The rack (31) is horizontally slidably disposed in the groove of the guide groove (33) in the left and right direction. The mounting plate (41) is also provided with a stop (35), which blocks the rack (31) at the end of its extended state; A limiting ring (321) is provided on each of the two ends of the gear (32). The limiting ring (321) blocks the two ends of the tooth groove of the gear (32), and the maximum diameter of the gear (32) is smaller than the diameter of the gear (32).

5. A high-precision automatic welding equipment with dual stations according to claim 1, characterized in that: Two positioning frames (23) are provided on the mounting plate (41), and the two positioning frames (23) are respectively located on the left and right sides of the mounting plate (41); Each of the positioning frames (23) is equipped with a clamping cylinder (2) and a gear (32), and the gears (32) installed on both positioning frames (23) mesh with the same rack (31).

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