A kind of circular ring automatic welding device and welding method thereof

Abstract

The present invention discloses an automatic ring welding device, comprising a cabinet, a loading assembly mounted on the cabinet, a pusher assembly, a feeder assembly, a welding positioning assembly, a laser welder, and a blanking assembly, wherein the loading assembly realizes the caching of multiple rings and cooperates with a turntable to realize rotary loading. The pusher assembly is located on the side of the loading assembly and is inserted into the rear end of the ring to be loaded, pushing the ring forward in sequence for loading. The feeder assembly is arranged between the loading assembly and the welding positioning assembly, clamping the ring from the loading assembly and transferring it to the welding positioning assembly. The welding positioning assembly is used to fix the ring to be welded and close the welding openings to facilitate welding by the laser welder above. One end of the blanking assembly extends to the welding positioning assembly and the other end extends to the end of the cabinet, and the ring that has been welded and dropped is transferred for blanking. The present invention realizes automatic loading and unloading of the rings and efficient positioning and docking during welding to ensure welding quality.

Description

Technical Field

[0001] The present invention relates to the field of automated processing, and in particular to an automatic ring welding device and a welding method thereof. Background Art

[0002] Rings are a common component in automotive parts. The manufacturing process involves bending a sheet into a quasi-circular shape, welding the edges, and then using a rounding die to round the ring until the overall roundness meets the process requirements. Currently, the manufacturing process for automotive rings involves first cutting the material strip into sheets of fixed lengths according to the ring size. A specific rolling die, combined with punches arranged in multiple directions, is then used to perform a multi-directional rolling operation on the sheet material to form a ring. A welding mechanism is then used to weld the ring's opening to form the entire ring, and the ring is then rounded using a rounding mechanism. Laser welding is used for this welding step, but existing welding equipment can only load and unload one piece at a time, requiring real-time operator control and making it difficult to meet the demands of high-speed automated processing. Summary of the Invention

[0003] Purpose of the invention: In order to solve the deficiencies of the prior art, the present invention provides an automatic ring welding device, which realizes automatic loading and unloading of rings and efficient positioning and docking during welding, thereby ensuring welding quality and improving production efficiency.

[0004] The technical solution adopted by the present invention is: an automatic ring welding device, including a cabinet, a loading assembly installed on the cabinet, a pushing assembly, a feeding assembly, a welding positioning assembly, a laser welder and a blanking assembly, wherein:

[0005] The loading assembly is located on one side of the cabinet and comprises a turntable, a material rack mounting seat fixed on the turntable, a plurality of material racks arranged around the material rack mounting seat, and a plurality of circular rings to be welded are mounted on the material racks;

[0006] The pushing assembly is located on the side of the loading assembly, and has a pushing linear module, a lifting cylinder fixed on the slider of the pushing linear module with a mounting seat, and a pushing plate assembled on the side of the mounting seat with a slide rail. The upper end of the pushing plate is connected to the lifting cylinder, and the lower end is provided with a notch that matches the material rack. The pushing plate is inserted into the rear end of the material rack and pushes the ring forward;

[0007] The feeding assembly is arranged between the loading assembly and the welding positioning assembly, and clamps the ring from the loading assembly and transfers it to the welding positioning assembly;

[0008] The welding positioning assembly comprises a first clamping assembly and a second clamping assembly which are symmetrically arranged. The first clamping assembly and the second clamping assembly are used to clamp the two ends of the circular welding opening and to move closer to each other and fit together under the control of the transverse cylinder.

[0009] The laser welder is located between the first clamping assembly and the second clamping assembly to perform laser welding on the close-fitting rings;

[0010] The blanking component is a blanking conveyor belt, one end of which is located at the end of the cabinet and the other end extends to the laser welding positioning component to convey the rings that have been dropped after welding.

[0011] Preferably, the material rack mounting seat is a polygonal column structure, and the material rack is mounted on each side of the material rack mounting seat in conjunction with the back plate.

[0012] Preferably, the upper edge of the material rack has an arc surface that matches the inner wall of the circular ring, and a positioning strip is provided on the arc surface, and the welding opening of the circular ring mounted on the material rack is stuck in the positioning strip.

[0013] Preferably, a material stopping assembly is also provided at the front end of the pushing linear module, including a connecting plate, a material stopping cylinder and a material stopping block. The material stopping cylinder is fixed to the front end of the pushing linear module through the connecting plate. The telescopic end of the material stopping cylinder is fixed with a material stopping block, and the material stopping block is controlled by the lifting and lowering of the material stopping cylinder to block the front end of the material rack, thereby limiting the forward movement distance of the ring pushed by the pushing plate.

[0014] Preferably, the feeding assembly includes a feeding linear module, a picking linear module, a lifting module and parallel air grippers. The picking linear module is fixed on the slider of the feeding linear module and is arranged perpendicular to the feeding linear module. The lifting module is fixed on the slider of the picking linear module, and the parallel air grippers are fixed on the slider of the lifting module. A picking block is installed on the parallel air grippers, and the outer surface of the picking block is an arc surface that matches the inner wall of the circular ring.

[0015] Preferably, the welding positioning assembly includes a mounting backplate, the first clamping assembly is fixedly mounted on the mounting backplate through a fixed plate, the second clamping assembly is mounted on the mounting backplate through a movable plate and a slide rail, one end of the movable plate is connected to a transverse cylinder, and the transverse cylinder drives the movable plate to move transversely, thereby driving the second clamping assembly to move transversely.

[0016] Preferably, the first clamping assembly and the second clamping assembly are symmetrically arranged in a V-shaped layout, and the first clamping assembly and the second clamping assembly both include an arc-shaped bracket, a telescopic cylinder and a clamping block. The clamping block is fixed to the telescopic end of the telescopic cylinder and is arranged in a straight line with the arc-shaped bracket. The clamping of the ring is achieved by the arc-shaped bracket and the clamping block.

[0017] Preferably, the welding positioning assembly also includes a positioning block fixed on the back of the mounting backplate in cooperation with the telescopic cylinder, the free end of the positioning block passes through the mounting backplate and is located between the arc-shaped brackets of the first clamping assembly and the second clamping assembly, and the positioning block is used for positioning the welding opening when the ring is placed, and for outward pushing and blanking after welding.

[0018] Preferably, the free end of the positioning block is triangular wedge-shaped.

[0019] A circular ring automatic welding method comprises the following steps:

[0020] Put the ring to be welded on the material rack with the welding opening facing upwards and located at the positioning bar. After all the material racks are loaded, the round table rotates and rotates a material rack to the loading position;

[0021] The push plate moves to the end of the material rack under the control of the push transverse movement module, and the push plate is inserted into the material rack at the rear end of the ring. The blocking cylinder controls the blocking plate to descend, and the push plate pushes the ring forward so that the frontmost ring is located at the loading position at the end of the material rack. The blocking cylinder controls the blocking plate to rise, and the outermost ring waits for loading;

[0022] The ring is opened by means of parallel air grippers in cooperation with the material taking block, and the material taking linear module is used to take the ring from the material adding part, and the material feeding linear module is used to send the ring to the welding positioning assembly, and the ring is placed on two arc-shaped brackets. The welding opening of the ring is positioned by the positioning blocks, and the clamping blocks at both ends move down to clamp the two ends of the ring with the arc-shaped brackets. At this time, the positioning blocks retract, and the transverse cylinder controls the transverse movement of the second clamping assembly to bring the two ends of the ring closer together, and the laser welder performs laser welding of the weld seam.

[0023] After welding is completed, the clamping block is released, and the positioning block extends to push the ring away from the arc bracket, and drops it onto the unloading conveyor for unloading.

[0024] Beneficial effects: The automatic ring welding device disclosed by the present invention has the following effects:

[0025] The rotating material rack can cache multiple rings, reducing the frequency of manual loading. The positioning strips on the material rack can achieve uniformity of welding openings, eliminating subsequent alignment operations and simplifying the overall structure.

[0026] The cooperation between the pushing assembly and the feeding assembly realizes the automatic loading of the ring, effectively improving the production efficiency;

[0027] The welding positioning assembly uses two symmetrically arranged sets of clamping mechanisms to clamp the two ends of the opening, and then uses a transverse cylinder to bring the two ends of the opening closer together, combined with laser welding to ensure the firmness of the welding and the flatness of the weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 1 is an overall structural diagram of an embodiment of the present invention;

[0029] Figure 2 for Figure 1 A partial enlarged view of

[0030] Figure 3This is a structural diagram of the pusher assembly in an embodiment of the present invention;

[0031] Figure 4 This is a structural diagram of a feeding assembly in an embodiment of the present invention;

[0032] Figure 5 This is a structural diagram of a welding positioning assembly in an embodiment of the present invention;

[0033] Figure 6 This is a front view of the welding positioning assembly in an embodiment of the present invention;

[0034] Figure 7 for Figure 5 A partial enlarged view of . DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] The present invention discloses a circular ring automatic welding device, the structure of which is as follows: Figure 1As shown, it includes a cabinet 1, a loading component 2 installed on the cabinet, a pushing component 3, a feeding component 4, a welding positioning component 5, a laser welder and a blanking component 6, wherein the loading component is located on one side of the cabinet to realize the caching of multiple rings, and at the same time cooperates with the turntable to realize rotary loading, the pushing component is located on the side of the loading component, inserted into the rear end of the ring to be loaded, and pushes the ring forward in turn for loading, the feeding component is arranged between the loading component and the welding positioning component, clamps the ring from the loading component and transfers it to the welding positioning component, the welding positioning component is used to fix the ring to be welded, and closes the welding opening to facilitate welding by the laser welder above, one end of the blanking component extends to the welding positioning component, and the other end extends to the end of the cabinet, and the welded and fallen ring is transferred for blanking.

[0039] Specifically, the loading assembly structure is as follows: Figure 2 As shown, it includes a turntable 21, a material rack mounting base 22 fixed on the turntable, and a plurality of material racks 23 replaced on the material rack mounting base. The turntable is driven to rotate by a motor below, and the motor is located inside the cabinet. The material rack mounting base is a multi-prism structure. The material rack is mounted on each side of the material rack mounting base with a back plate 24. The setting of the back plate allows a gap of the moving thickness (back plate thickness) between the circular ring and the material rack mounting base after the circular ring is fitted, which facilitates the insertion of the pushing assembly for the pushing operation. The upper edge of the material rack has an arc surface 25 that matches the inner wall of the circular ring, and a positioning strip 26 is provided on the arc surface. The positioning strip is used to position the welding opening when the circular ring is fitted, ensuring that each circular ring welding opening of the fitting is facing upward, and also ensuring that the position of the opening is facing upward when it is subsequently transferred to the welding positioning assembly, eliminating the tedious operation of aligning the openings.

[0040] The pusher assembly structure is as follows Figure 3 As shown, it includes a pushing linear module 31, a lifting cylinder 32, a pushing plate 33, a blocking cylinder 34 and a blocking block 35, wherein the pushing linear module is mounted on the side of the loading assembly, the lifting cylinder cooperates with the mounting seat 36 to be fixed on the slider of the pushing linear module, the pushing plate cooperates with the slide rail 37 to be assembled on the side of the mounting seat, the upper end of the pushing plate is connected to the lifting cylinder, and a notch 38 is opened at the lower end. The lifting cylinder controls the pushing plate to move up and down along the slide rail. When the pushing plate descends, the notch at its lower end is stuck in the rear end of the material rack and is located behind the circular ring. The synchronous pushing linear module drives the pushing plate to move horizontally, pushing the circular ring on the material rack forward.

[0041] The material-blocking cylinder cooperates with the connecting plate 39 to be fixed at the front end of the pushing linear module, and the material-blocking block is fixed at the telescopic end of the material-blocking cylinder. The material-blocking cylinder controls its descent to the end of the material rack, limiting the forward movement distance of the ring pushed by the pushing plate, so that the outermost ring is precisely located at the loading position and will not leave the material rack due to the push of the pushing plate.

[0042] The feeding assembly structure is as follows Figure 4 As shown, the feeding assembly includes a feeding linear module 41, a picking linear module 42, a lifting module 43 and a parallel air gripper 44. The picking linear module is fixed on the feeding linear module slider and is arranged perpendicular to the feeding linear module. The lifting module is fixed on the slider of the picking linear module. The parallel air gripper is fixed on the slider of the lifting module. Picking blocks 45 are installed on the two claws of the parallel air gripper. The outer side surface of the picking block is an arc surface matching the inner wall of the ring. When picking up materials, the picking linear module controls the parallel air gripper to move forward so that the picking block is located on the inner side of the ring, and the parallel air gripper expands outward. The picking blocks on both sides stick to the inner wall of the ring and stretch it from the inside to the outside to separate it from the material rack. The picking linear module retracts synchronously, and the feeding linear module moves to send the ring to the welding positioning assembly.

[0043] The welding positioning component structure is as follows Figures 5 and 6 As shown, it includes a mounting backplate 51, a first clamping assembly 52, a second clamping assembly 53, and a transverse cylinder 54. The first clamping assembly is fixedly mounted on the mounting backplate through a fixed plate 55, and the second clamping assembly is mounted on the mounting backplate through a movable plate 56 in cooperation with a slide rail 57. The transverse cylinder is fixed on the mounting backplate on the side of the second clamping assembly, and its telescopic end is connected to the movable plate, and the movable plate is controlled to move laterally along the slide rail through the transverse assembly.

[0044] The first clamping assembly and the second clamping assembly are symmetrically arranged in a V-shaped layout. The first clamping assembly includes a first arc-shaped bracket 521, a first telescopic cylinder 522 and a first clamping block 523. The second clamping assembly structure includes a second arc-shaped bracket 531, a second telescopic cylinder 532 and a second clamping block 533. The first arc-shaped bracket is fixed on a fixed plate, and the second arc-shaped bracket is fixed on a movable plate. There is a gap between the first arc-shaped bracket and the second arc-shaped bracket. The first clamping block is fixed at the end of the first telescopic cylinder and is arranged in a straight line with the first arc-shaped bracket. The first clamping block and the first arc-shaped bracket are used to clamp one end of the circular ring opening. The second clamping block is fixed at the end of the second telescopic cylinder and is arranged in a straight line with the second arc-shaped bracket. The other end of the circular ring opening is clamped by the second clamping block and the second arc-shaped bracket. The movable plate is controlled to move horizontally by the transverse cylinder so that the circular ring opening is closed together, which is convenient for laser welding by the laser welder directly above.

[0045] A positioning block 58 (such as Figure 7 As shown), the front end of the positioning block is a triangular wedge, and the rear end is fixed to the telescopic cylinder located on the back of the mounting back plate, and is controlled by the telescopic cylinder to extend between the first arc bracket and the second arc bracket, or retract.

[0046] The positioning block can position the welding opening when the ring is placed to ensure its direction, and retract when the openings are closed for welding. After welding is completed, it extends outward to push the ring outward and drop it onto the blanking assembly.

[0047] The unloading component is a unloading conveyor belt, one end of which is located at the end of the cabinet, with a material box placed underneath, and the other end extends to the laser welding positioning component to convey the rings that have been dropped after welding.

[0048] The laser welder is fixed to the cabinet via a mounting bracket 7 . The laser welder is fixed to the back of the mounting bracket, located between the first clamping assembly and the second clamping assembly, and performs laser welding on the weld seams that are brought together.

[0049] The present invention discloses a circular ring automatic welding method, comprising the following steps:

[0050] Put the ring to be welded on the material rack with the welding opening facing upwards and located at the positioning bar. After all the material racks are loaded, the round table rotates and rotates a material rack to the loading position;

[0051] The push plate moves to the end of the material rack under the control of the push transverse movement module, and the push plate is inserted into the material rack at the rear end of the ring. The blocking cylinder controls the blocking plate to descend, and the push plate pushes the ring forward so that the frontmost ring is located at the loading position at the end of the material rack. The blocking cylinder controls the blocking plate to rise, and the outermost ring waits for loading;

[0052] The ring is opened by means of parallel air grippers in cooperation with the material taking block, and the material taking linear module is used to take the ring from the material adding part, and the material feeding linear module is used to send the ring to the welding positioning assembly, and the ring is placed on two arc-shaped brackets. The welding opening of the ring is positioned by the positioning blocks, and the clamping blocks at both ends move down to clamp the two ends of the ring with the arc-shaped brackets. At this time, the positioning blocks retract, and the transverse cylinder controls the transverse movement of the second clamping assembly to bring the two ends of the ring closer together, and the laser welder performs laser welding of the weld seam.

[0053] After welding is completed, the clamping block is released, and the positioning block extends to push the ring away from the arc bracket, and drops it onto the unloading conveyor for unloading.

[0054] The technical content and technical features of the present invention have been disclosed as above. However, those skilled in the art may still make various substitutions and modifications based on the teachings and disclosures of the present invention without departing from the spirit of the present invention. Therefore, the scope of protection of the present invention should not be limited to the contents disclosed in the embodiments, but should include various substitutions and modifications that do not depart from the present invention and are covered by the claims of this patent application.

Claims

1. A circular ring automatic welding device, characterized by: It includes a cabinet, a loading assembly installed on the cabinet, a pushing assembly, a feeding assembly, a welding positioning assembly, a laser welder and a blanking assembly, wherein: The loading assembly is located on one side of the cabinet and comprises a turntable, a material rack mounting seat fixed on the turntable, a plurality of material racks arranged around the material rack mounting seat, and a plurality of circular rings to be welded are mounted on the material racks; The pushing assembly is located on the side of the loading assembly, and is provided with a pushing linear module, which cooperates with the mounting seat to fix the lifting cylinder on the sliding block of the pushing linear module, and cooperates with the slide rail to be assembled on the side of the mounting seat. The upper end of the pushing plate is connected to the lifting cylinder, and the lower end is provided with a notch that cooperates with the material rack. The pushing plate is inserted into the rear end of the material rack and pushes the ring forward. The front end of the pushing linear module is also provided with a stopping assembly, including a connecting plate, a stopping cylinder and a stopping block. The stopping cylinder is fixed to the front end of the pushing linear module through the connecting plate, and the telescopic end of the stopping cylinder is fixed with a stopping block, which is controlled by the lifting of the stopping cylinder to block the front end of the material rack, thereby limiting the forward movement distance of the pushing plate to push the ring; The feeding assembly is arranged between the loading assembly and the welding positioning assembly, and clamps the ring from the loading assembly and transfers it to the welding positioning assembly. The feeding assembly includes a feeding linear module, a picking linear module, a lifting module and a parallel air claw. The picking linear module is fixed on the slider of the feeding linear module and is arranged perpendicular to the feeding linear module. The lifting module is fixed on the slider of the picking linear module, and the parallel air claw is fixed on the slider of the lifting module. A picking block is installed on the parallel air claw, and the outer side surface of the picking block is an arc surface that matches the inner wall of the ring. The welding positioning assembly comprises a first clamping assembly and a second clamping assembly which are symmetrically arranged. The first clamping assembly and the second clamping assembly are used to clamp the two ends of the circular welding opening and are brought close to each other and fitted together under the control of the transverse cylinder. The welding positioning assembly also comprises a mounting back plate. The first clamping assembly is fixedly mounted on the mounting back plate through a fixed plate. The second clamping assembly is mounted on the mounting back plate through a movable plate and a slide rail. One end of the movable plate is connected to the transverse cylinder, which drives the movable plate to move transversely, thereby driving the second clamping assembly to move transversely. The welding positioning assembly also includes a positioning block, which is fixed to the back of the mounting back plate in conjunction with the telescopic cylinder. The free end of the positioning block passes through the mounting back plate and is located between the arc-shaped brackets of the first clamping assembly and the second clamping assembly. The positioning block is used to position the welding opening when the ring is placed, and to push the material outward after welding. The laser welder is located between the first clamping assembly and the second clamping assembly to perform laser welding on the close-fitting rings; The blanking component is a blanking conveyor belt, one end of which is located at the end of the cabinet and the other end extends to the laser welding positioning component to convey the rings that have been dropped after welding.

2. The automatic ring welding device according to claim 1, characterized in that: The material rack mounting seat is a multi-prism structure, and the material rack is mounted on each side of the material rack mounting seat in conjunction with the back plate.

3. The automatic ring welding device according to claim 2, characterized in that: The upper edge of the material rack has an arc surface that matches the inner wall of the circular ring, and a positioning strip is provided on the arc surface. The welding opening of the circular ring sleeved on the material rack is clamped on the positioning strip.

4. The automatic ring welding device according to claim 1, characterized in that: The first clamping assembly and the second clamping assembly are symmetrically arranged in a V-shaped layout. The first clamping assembly and the second clamping assembly both include an arc-shaped bracket, a telescopic cylinder and a clamping block. The clamping block is fixed to the telescopic end of the telescopic cylinder and is arranged in a straight line with the arc-shaped bracket. The ring is clamped by the arc-shaped bracket and the clamping block.

5. The automatic ring welding device according to claim 1, characterized in that: The free end of the positioning block is in a triangular wedge shape.

6. A method for automatic ring welding, implemented according to any one of claims 1 to 5, characterized in that The steps include: Put the ring to be welded on the material rack with the welding opening facing upwards and located at the positioning bar. After all the material racks are loaded, the round table rotates and rotates a material rack to the loading position; The push plate moves to the end of the material rack under the control of the push transverse movement module, and the push plate is inserted into the material rack at the rear end of the ring. The blocking cylinder controls the blocking plate to descend, and the push plate pushes the ring forward so that the frontmost ring is located at the loading position at the end of the material rack. The blocking cylinder controls the blocking plate to rise, and the outermost ring waits for loading; The ring is opened by means of parallel air grippers in cooperation with the material taking block, and the material taking linear module is used to take the ring from the material adding part, and the material feeding linear module is used to send the ring to the welding positioning assembly, and the ring is placed on two arc-shaped brackets. The welding opening of the ring is positioned by the positioning blocks, and the clamping blocks at both ends move down to clamp the two ends of the ring with the arc-shaped brackets. At this time, the positioning blocks retract, and the transverse cylinder controls the transverse movement of the second clamping assembly to bring the two ends of the ring closer together, and the laser welder performs laser welding of the weld seam. After welding is completed, the clamping block is released, and the positioning block extends to push the ring away from the arc bracket, and drops it onto the unloading conveyor for unloading.

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