Welding tool with side face positioning function and laser welding machine

Abstract

The utility model provides a side face positioning welding tool and a laser welding machine, and relates to the technical field of welding equipment, the side face positioning welding tool comprises a fixing seat used for being connected with a working platform, a first positioning piece, a second positioning piece and a pressing mechanism, the first positioning piece, the second positioning piece and the pressing mechanism are arranged on the fixing seat, and the first positioning piece is used for positioning a first workpiece to be welded; the second positioning piece is used for positioning a second workpiece to be welded and comprises positioning blocks symmetrically arranged on the two sides of the first positioning piece and a moving piece used for driving the two positioning blocks to move in the direction close to or away from each other; the pressing mechanism comprises a pressing block and a pushing piece used for driving the pressing block to move in the horizontal direction, and the pushing piece is driven in an operable mode so that the pressing block can press the upper end face of the second to-be-welded workpiece. Therefore, the problems that an existing welding positioning jig is low in universality and the to-be-welded workpiece is not convenient to place are solved.

Description

A side-positioning welding fixture and a laser welding machine Technical Field

[0001] This utility model relates to the field of welding equipment technology, and more specifically, to a side-positioning welding fixture and a laser welding machine. Background Technology

[0002] Laser welding equipment includes a laser head and a positioning fixture. Referring to Figures 10 and 11, when welding such products, the positioning fixture typically has a first positioning element, a second positioning element, and a clamping element. First, the first workpiece to be welded is placed at the upper limit of the first positioning element, then the second workpiece to be welded is placed at the upper limit of the second positioning element. Next, the clamping element is driven to move and clamp against the end face of the workpiece to be welded. For example, in a laser welding fixture and laser welding method disclosed in Chinese Patent CN113523616A, the positions of the positioning element used to limit the workpiece to be welded and the clamping mechanism used to clamp the end face of the workpiece to be welded are fixed. This means that when welding the same first workpiece to be welded with a second workpiece of different size, the entire positioning fixture needs to be replaced, resulting in low compatibility of the positioning fixture. Furthermore, the clamping mechanism drives the pressure block to move vertically, resulting in a small operating space in the vertical direction of the welding position, making it inconvenient for operators to place the workpiece to be welded. Summary of the Invention

[0003] This utility model discloses a side-positioning welding fixture, which aims to improve the problems of low compatibility and unfavorable placement of workpieces to be welded in existing welding positioning fixtures.

[0004] The present invention adopts the following solution:

[0005] A side-positioning welding fixture includes a fixed base for connecting to a work platform, and a first positioning member, a second positioning member, and a clamping mechanism mounted on the fixed base. The first positioning member is used to position a first workpiece to be welded; the second positioning member is used to position a second workpiece to be welded. The second positioning member includes positioning blocks symmetrically arranged on both sides of the first positioning member and a moving member for driving the two positioning blocks to move toward each other or away from each other. The clamping mechanism includes a pressing block and a pushing member for driving the pressing block to move horizontally. The pushing member is operably driven so that the pressing block presses against the upper end face of the second workpiece to be welded.

[0006] As a further improvement, the clamping mechanism also includes a base and a plurality of swing arms. The pressure block is arranged parallel to the base, and the two ends of the swing arms are respectively hinged to the base and the pressure block. The swing arms are driven to swing by the pusher to move the pressure block toward or away from the second workpiece to be welded.

[0007] As a further improvement, the pusher has a drive shaft for insertion into the movable slot of the swing arm, and when the pusher moves telescopically, the drive shaft abuts against the wall of the movable slot to drive the swing arm to swing.

[0008] As a further improvement, the positioning block is provided with an L-shaped groove, the lower end face of the second workpiece to be welded abuts against the bottom surface of the L-shaped groove, and the periphery of the second workpiece to be welded is limited by the side wall of the L-shaped groove.

[0009] As a further improvement, the pressure block is configured on the same side as the positioning block and can be driven by the moving member to move synchronously with the positioning block.

[0010] As a further improvement, the moving component includes a moving cylinder and a moving plate, the moving cylinder being used to drive the moving plate to move, and the positioning block and the pressing mechanism being disposed on the moving plate.

[0011] As a further improvement, the first positioning member is provided with a limiting groove for limiting the first workpiece to be welded, the shape of which is similar to the bottom cross-sectional shape of the first workpiece to be welded.

[0012] As a further improvement, the bottom of the first positioning member is provided with an air-avoiding groove that communicates with the limiting groove.

[0013] Another laser welding machine is provided, including a main body of the equipment and a laser head and a working platform disposed on the main body of the equipment, wherein a welding fixture for side positioning as described in any of the preceding claims is fixed on the working platform.

[0014] As a further improvement, the laser head is configured to move along the left-right and up-down directions of the main body of the device, and the working platform is configured to move along the front-back direction of the main body of the device.

[0015] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0016] 1. The second positioning component is positioned on both sides of the first positioning component and moved by a moving component, making the distance between the two positioning components adjustable. This adapts to second workpieces of different sizes, improving the versatility of the welding fixture and saving on tooling costs. Simultaneously, setting the pressure block to move horizontally reduces the space occupied above the welding position, facilitating the operator's loading and unloading of workpieces. Furthermore, the moving distance of the pressure block can be controlled by a pushing component, making the position of the pressure block on the second workpiece adjustable. This ensures that the welding position is exposed when welding different second workpieces, which is beneficial for setting the laser head's movement trajectory and avoids interference between the laser head and the clamping mechanism.

[0017] 2. When placing the first workpiece to be welded, the two positioning blocks can be driven to move in opposite directions. After the first workpiece to be welded is placed into the first positioning component, the two positioning blocks can be driven to move in opposite directions to a preset position, so as to further facilitate the operator in placing the workpiece to be welded.

[0018] 3. The pressure block, the base, and the swing rod form a parallelogram structure. The pressure block always remains parallel to the base when it moves, so that the pressure block can move in the horizontal direction and can press the second workpiece to be welded.

[0019] 4. Both the positioning block and the clamping mechanism are mounted on the movable plate to avoid restricting the movement of the positioning block by the clamping mechanism, ensuring that the clamping mechanism can clamp the workpieces of different sizes when welding them. Simultaneously, the positioning block and clamping mechanism being mounted on the same side increases the movement space on other sides of the welding fixture, facilitating installation on the welding machine and further simplifying operator work. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 is a structural schematic diagram of a laser welding machine according to one embodiment of the present invention;

[0022] Figure 2 is a structural schematic diagram of the hidden part of the main body of the device in Figure 1;

[0023] Figure 3 is a schematic diagram of the welding fixture according to one embodiment of the present invention;

[0024] Figure 4 is a schematic diagram of the structure of the workpiece to be welded placed on the welding fixture;

[0025] Figure 5 is a cross-sectional view of Figure 4 along one of its sections;

[0026] Figure 6 is a schematic diagram of the structure of the pressure block and the second workpiece to be welded in one embodiment of the present invention;

[0027] Figure 7 is a cross-sectional view of Figure 6 along one of its sections;

[0028] Figure 8 is a structural schematic diagram of the pressing mechanism according to one embodiment of the present invention;

[0029] Figure 9 is a cross-sectional view of Figure 8 along one of its sections;

[0030] Figure 10 is a schematic diagram of the structure of a welded workpiece according to one embodiment of the present invention;

[0031] Figure 11 is an exploded view of the first and second workpieces to be welded according to one embodiment of the present invention.

[0032] icon:

[0033] 1-Welding fixture; 11-Fixed base; 12-First positioning component; 121-Limiting groove; 122-Clearing groove; 13-Second positioning component; 131-Positioning block; 1311-L-shaped groove; 132-Moving component; 133-Moving plate; 14-Clamping mechanism; 141-Clamping block; 1411-Clamping part; 142-Pushing component; 1421-Drive shaft; 143-Base; 144-Swing rod; 1441-Moving groove;

[0034] 2-Main body of the equipment; 21-Laser head; 22-Working platform; 23-Human-machine interface;

[0035] 31 - First workpiece to be welded; 32 - Second workpiece to be welded. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0037] Example

[0038] Referring to Figures 1 to 11, this embodiment provides a side-positioning welding fixture, including a fixed base 11 for connection to a work platform 22, and a first positioning member 12, a second positioning member 13, and a clamping mechanism 14 mounted on the fixed base 11. The first positioning member 12 is used to position a first workpiece 31 to be welded; the second positioning member 13 is used to position a second workpiece 32 to be welded. The second positioning member 13 includes positioning blocks 131 symmetrically arranged on both sides of the first positioning member 12 and a moving member 132 for driving the two positioning blocks 131 to move toward each other or away from each other. The clamping mechanism 14 includes a pressing block 141 and a pushing member 142 for driving the pressing block 141 to move in a horizontal direction. The pushing member 142 is driven in an operable manner so that the pressing block 141 presses against the upper end face of the second workpiece 32 to be welded.

[0039] It should be noted that in this embodiment, the second positioning member 13 is arranged on both sides of the first positioning member 12 and is driven to move by the moving member, so that the distance between the two positioning members is adjustable, thereby adapting to the second workpieces 32 of different sizes to be welded, improving the compatibility of the welding fixture 1, and saving tooling costs. At the same time, setting the pressure block 141 to move in the horizontal direction can reduce the space occupied above the welding position, making it convenient for operators to pick up and put down the workpieces to be welded. In addition, the moving distance of the pressure block 141 can be controlled by the pushing member 142, so that the position of the pressure block 141 pressing on the second workpiece 32 to be welded is adjustable, thereby ensuring that the welding position is exposed when welding different second workpieces 32, which is beneficial to the setting of the movement trajectory of the laser head 21 and avoids interference between the laser head 21 and the clamping mechanism 14.

[0040] In other embodiments, when placing the first workpiece 31 to be welded, the two positioning blocks 131 can be driven to move in opposite directions, and after the first workpiece 31 to be welded is placed into the first positioning member 12, the two positioning blocks 131 can be driven to move in opposite directions to a preset position, so as to further facilitate the operator to place the workpiece to be welded. This is not limited to this and is not specifically limited.

[0041] In a preferred embodiment, the clamping mechanism 14 further includes a base 143 and a plurality of swing rods 144. The pressure block 141 is arranged parallel to the base 143. The two ends of the swing rods 144 are respectively hinged to the base 143 and the pressure block 141. The swing rods 144 are driven to swing by the pusher 142, so as to move the pressure block 141 toward or away from the second workpiece 32 to be welded. For example, the pressure block 141, the base 143 and the swing rods 144 form a parallelogram structure. The pressure block 141 always remains parallel to the base 143 when moving, so that the pressure block 141 can move in the horizontal direction and can clamp the second workpiece 32 to be welded. Specifically, the pusher 142 has a drive shaft 1421 for insertion into the movable groove 1441 of the swing rod 144. When the pusher 142 moves telescopically, the drive shaft 1421 abuts against the wall of the movable groove 1441 to drive the swing rod 144 to swing. The movable groove 1441 is arranged in a racetrack shape to ensure the movement of the pressure block 141, the pusher 142 can be a cylinder, and the drive shaft 1421 is connected to the piston rod of the cylinder.

[0042] In another embodiment, the positioning block 131 is provided with an L-shaped groove 1311. The lower end face of the second workpiece 32 to be welded abuts against the bottom surface of the L-shaped groove 1311, and the periphery of the second workpiece 32 to be welded is limited by the side wall of the L-shaped groove 1311. During welding, the second workpiece 32 to be welded is first placed into the L-shaped groove 1311 for limitation, and then the pressure block 141 is driven to press against the upper end face of the second workpiece 32 to be welded, thereby limiting the position of the second workpiece 32 to be welded, preventing the second workpiece 32 to be welded from shifting and ensuring welding quality.

[0043] Preferably, the pressure block 141 and the positioning block 131 are arranged on the same side and can be driven by a moving member to move synchronously with the positioning block 131. The bottom of the pressure block 141 protrudes to provide a clamping part 1411 for abutting against the second workpiece 32 to be welded. The moving member 132 includes a moving cylinder and a moving plate 133. The moving cylinder drives the moving plate 133 to move, and both the positioning block 131 and the clamping mechanism 14 are arranged on the moving plate 133. It should be noted that the positioning block 131 and the clamping mechanism 14 are both arranged on the moving plate 133, which avoids the clamping mechanism 14 restricting the movement of the positioning block 131, ensuring that the clamping mechanism 14 can clamp the workpiece 32 of different sizes when welding. At the same time, the co-arrangement of the positioning block 131 and the clamping mechanism 14 on the same side increases the activity space on other sides of the welding fixture 1, which is beneficial for the installation of the welding fixture 1 on the welding machine and further facilitates the operation of the operator.

[0044] Based on the above embodiments, in an optional embodiment of this utility model, the first positioning member 12 is provided with a limiting groove 121 for limiting the first workpiece 31 to be welded. The shape of the limiting groove 121 is similar to the bottom cross-sectional shape of the first workpiece 31 to be welded. The first workpiece 31 to be welded is directly placed into the limiting groove 121, thus limiting the bottom of the first workpiece 31. Then, the second workpiece 32 to be welded is fitted onto the column of the first workpiece 31, and the pressure block 141 is driven to press the second workpiece 32 tightly, thereby limiting the two workpieces to be welded and ensuring accurate welding position. Furthermore, the bottom of the first positioning member 12 is provided with a clearance groove 122 communicating with the limiting groove 121. The clearance groove 122 reduces the contact area between the first workpiece 31 to be welded and the first positioning member 12, avoiding vacuum adsorption and facilitating the removal of the welded workpiece.

[0045] This utility model also provides a laser welding machine, including a main body of the equipment and a laser head 21 and a working platform 22 disposed on the main body. A welding fixture 1 with side positioning as described in any of the previous embodiments is fixed on the working platform 22. In one embodiment, the laser head 21 is configured to move along the left-right and up-down directions of the main body of the equipment, and the working platform 22 is configured to move along the front-back direction of the main body of the equipment. During welding, the workpiece to be welded is first placed into the welding fixture 1 and positioned, then the working platform 22 is driven to move to a set position, and then the laser head 21 is driven to move along the welding trajectory to weld, thereby welding and fixing the two workpieces to be welded. The working platform 22 can move back and forth along the main body of the equipment so that the welding fixture 1 can move to the window of the equipment, facilitating the loading and unloading of the workpieces and improving welding efficiency. It should be noted that the connection between the welding fixture 1 and the working platform 22 is by screws. The coordination of the laser head 21, the working platform 22, and the welding fixture 1 is controlled by a control unit, which can be a PLC. The circuit principle and structure are existing technology and will not be described further here. Furthermore, a human-machine interface 23 is provided on one side of the main body of the equipment to facilitate operators in setting and adjusting parameters.

[0046] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

Claims

1. A welding fixture for side positioning, characterized in that, The device includes a fixed base for connecting to a work platform, and a first positioning member, a second positioning member, and a clamping mechanism mounted on the fixed base. The first positioning member is used to position a first workpiece to be welded; the second positioning member is used to position a second workpiece to be welded. The second positioning member includes positioning blocks symmetrically arranged on both sides of the first positioning member and a moving member for driving the two positioning blocks to move toward each other or away from each other. The clamping mechanism includes a pressing block and a pushing member for driving the pressing block to move horizontally. The pushing member is operably driven so that the pressing block presses against the upper end face of the second workpiece to be welded.

2. The side-positioned welding fixture according to claim 1, characterized in that The clamping mechanism also includes a base and multiple swing arms. The pressure block is arranged parallel to the base. The two ends of the swing arms are respectively hinged to the base and the pressure block. The swing arms are driven to swing by the pusher to move the pressure block toward or away from the second workpiece to be welded.

3. The welding fixture for side positioning according to claim 2, characterized in that, The pusher has a drive shaft for insertion into the movable slot of the swing arm. When the pusher moves telescopically, the drive shaft abuts against the wall of the movable slot to drive the swing arm to swing.

4. The side-positioned welding fixture of claim 1, wherein, The positioning block is provided with an L-shaped groove, the lower end face of the second workpiece to be welded abuts against the bottom surface of the L-shaped groove, and the periphery of the second workpiece to be welded is limited by the side wall of the L-shaped groove.

5. The welding fixture for side positioning according to claim 1, characterized in that, The pressure block is disposed on the same side as the positioning block and can be driven by the moving member to move synchronously with the positioning block.

6. The side-positioned welding fixture of claim 5, wherein, The moving component includes a moving cylinder and a moving plate. The moving cylinder is used to drive the moving plate to move. The positioning block and the pressing mechanism are both disposed on the moving plate.

7. The side-positioned welding fixture of claim 1, wherein The first positioning member is provided with a limiting groove for limiting the first workpiece to be welded, and the shape of the limiting groove is similar to the bottom cross-sectional shape of the first workpiece to be welded.

8. The side-positioned welding fixture of claim 7, wherein, The bottom of the first positioning component is provided with an air-avoiding groove that communicates with the limiting groove.

9. A laser welding machine, characterized in that, It includes a main body of equipment and a laser head and a working platform disposed on the main body of equipment, wherein a welding fixture for side positioning as described in any one of claims 1-8 is fixed on the working platform.

10. The laser welder of claim 9, wherein, The laser head is configured to move along the left-right and up-down directions of the main body of the device, and the working platform is configured to move along the front-back direction of the main body of the device.

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