Automatic side spot welding equipment

Abstract

Automatic side spot welding equipment comprises a machine table, a feeder and a material taking robot arm are arranged on the table top of the machine table, and the automatic side spot welding equipment further comprises a rotary table, a feeding mechanism and a control mechanism, the welding jig comprises a mounting plate, a jig unit and a swing driving unit, the lower end of the mounting plate is rotationally arranged on the disc body, the jig unit is fixedly arranged on the surface, deviating from the disc body, of the mounting plate, and the swing driving unit is used for driving the mounting plate to swing along the rotating joint of the mounting plate and the disc body; and the laser welding assembly comprises a laser head. Through swinging of the jig unit, the welding point between the elastic piece and the microphone main body can be inclined, the side face of the welding point can face the laser head, the laser head can conveniently weld the elastic piece and the microphone main body on the side face, and therefore welding on the side face is achieved, reliability after welding is improved, and meanwhile welding quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, specifically to an automated side spot welding device. Background Technology

[0002] A microphone is a common electronic product, mainly used for sound pickup and microphone operation. During the manufacturing process of a microphone, a spring-loaded component needs to be soldered onto the main components. The spring-loaded component is a sheet-like metal piece, which is usually connected and fixed to the microphone body by soldering.

[0003] Currently, most welding methods use a sliding table welding method, which involves setting up the welding device on a module that can slide along a horizontal plane to weld the spring piece located directly below the module. This method can only weld the workpiece directly below it, and in order to ensure welding quality, the welding speed is relatively slow and the adjustment is also relatively troublesome.

[0004] Therefore, this technical solution provides an automated side spot welding device to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide an automated side spot welding device. To solve the above-mentioned technical problems, this utility model adopts the following technical solution:

[0006] An automated side spot welding device includes a machine base and an upper frame mounted on the machine base to provide an installation position. A feeder for conveying spring sheets as workpieces is mounted on the machine base, and a picking robot mounted on the upper frame for transferring the spring sheets is also included.

[0007] A turntable, which is set on the table of the machine tool and has a disc body and an indexing device for driving the disc body to rotate;

[0008] A welding fixture, comprising a plurality of equally spaced components arranged on the disc body along a circumferential direction, the welding fixture comprising:

[0009] A mounting plate, the lower end of which is rotatably mounted on the disk body.

[0010] A fixture unit, wherein the fixture unit is fixedly mounted on the surface of the mounting plate opposite to the disc body, and the top surface of the fixture unit is formed with a placement groove for transferring workpieces, and

[0011] A swing drive unit is disposed on the disc body and is connected to the mounting plate for driving the mounting plate to swing along the rotational connection point with the disc body.

[0012] A laser welding assembly is disposed on the machine table and suspended above the turntable, such that when the turntable rotates, the welding fixtures flow sequentially under the laser welding assembly. The laser welding assembly includes a laser head corresponding to the welding fixtures flowing under it.

[0013] Furthermore, the welding fixture also includes a base plate, which is fixedly mounted on the machine table and hinged to the mounting plate;

[0014] The swing drive unit includes:

[0015] A push rod, one end of which is rotatably connected to the base plate, and the other end of which is provided with a sliding groove along its length. A sliding block that limits sliding within the sliding groove is provided at the upper end of the mounting plate.

[0016] A driving device is connected to the push rod for driving the push rod to swing, thereby causing the mounting plate to swing along the hinge.

[0017] Furthermore, the fixture unit includes:

[0018] A fixture plate, wherein the placement slot is formed on the fixture plate;

[0019] The first cylinder is fixedly mounted on the mounting plate and is connected to the fixture plate for driving the fixture plate to reciprocate in the vertical direction.

[0020] Furthermore, the fixture unit also includes a fine-tuning component, and the fixture plate is fixedly mounted on the fine-tuning component. The fine-tuning component includes:

[0021] A seat body, which is throttlely connected to the first cylinder;

[0022] The first fine-tuning slide is fixedly mounted on the base.

[0023] The second fine-tuning slide is disposed on the first fine-tuning slide and is driven by the first fine-tuning slide to move in a first predetermined direction; the fixture plate is fixedly mounted on the second fine-tuning slide and is driven by the second fine-tuning slide to move in a second predetermined direction.

[0024] Furthermore, a secondary positioning device is also provided on the table surface of the machine tool, located next to the feeder, and the secondary positioning device is located on the movement trajectory of the picking robot, for secondary positioning of the workpiece grasped by the picking robot from the feeder. The secondary positioning device includes:

[0025] A support pole, which is fixedly installed on the table surface of the machine tool;

[0026] A positioning plate is fixedly installed at the end of the upright, and at least one positioning groove is provided on the positioning plate. The positioning groove has a bottom that conforms to the shape of the workpiece and allows the workpiece to be embedded. The inner wall of the positioning groove is set to gradually slope outward so that the opening of the positioning groove is flared.

[0027] Furthermore, a recognition camera is also installed on the machine platform. The recognition camera is located next to the secondary positioning device and on the moving trajectory of the material handling robot, and the lens of the recognition camera faces upward.

[0028] Furthermore, the laser welding assembly also includes:

[0029] A lifting linear module, wherein the lifting linear module is vertically mounted on the machine base;

[0030] A frame is mounted on the lifting linear module and driven by the lifting linear module to reciprocate in the vertical direction, and the laser head is mounted at the end of the frame.

[0031] Furthermore, a pressing and stabilizing component corresponding to the laser welding assembly is also provided on the table surface of the machine tool. The pressing and stabilizing component is used to press and stabilize the fixture unit carrying the workpiece, and includes:

[0032] A support frame, which is fixedly installed on the table surface of the machine tool;

[0033] The second cylinder is fixedly mounted on the upper end of the stand and has a piston end extending toward the turntable.

[0034] The third cylinder is connected to the piston end of the second cylinder, and a pressing member is provided on the piston rod of the third cylinder that extends downward.

[0035] The beneficial effects of this utility model are as follows:

[0036] This utility model provides an automated side spot welding device that can weld the spring clip to the microphone body from the side during the welding process of the spring clip, thereby improving welding quality and speed. By setting the welding fixture on a turntable, the device sequentially passes through stations for loading the microphone body, unloading the spring clip, welding, and unloading during the turntable's rotation. During the spring clip welding process, the microphone body and the spring clip are placed in the placement slot of the fixture unit. Simultaneously, the swing drive unit pushes the mounting plate to swing, causing the mounting plate to swing the fixture unit. This adjusts the position of the fixture unit relative to the laser head. Specifically, the swing of the fixture unit tilts the welding point between the spring clip and the microphone body, so that the side of the welding point faces the laser head, facilitating side welding of the spring clip and microphone body by the laser head. This side welding improves post-weld reliability and welding quality. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of this utility model.

[0038] Figure 2 This is a schematic diagram of the structure of this utility model after removing the upper frame and the material handling robot.

[0039] Figure 3 This is a schematic diagram of the structure of the disk body and welding fixture in this utility model.

[0040] Figure 4 This is an exploded structural diagram of the welding fixture in this utility model.

[0041] Figure 5 This is an exploded structural diagram of the fixture unit in this utility model.

[0042] Figure 6 for Figure 2 A magnified view of a portion of point A in the middle.

[0043] Figure 7 This is a schematic diagram of the pressing and stabilizing component in this utility model.

[0044] In the diagram: 100-Machine base; 101-Upper frame; 102-Feeder; 103-Material handling robot; 200-Turntable; 201-Panel body; 300-Welding fixture; 301-Mounting plate; 310-Jig unit; 311-Placement slot; 320-Swing drive unit; 400-Laser welding assembly; 401-Laser head; 321-Base plate; 322-Push rod; 323-Slide groove; 324-Drive device; 312-Jig plate; 313-First cylinder; 314-Fine adjustment assembly; 3141-Base; 3142-First fine adjustment slide; 3143-Second fine adjustment slide; 110-Secondary positioning device; 111-Upright pole; 112-Positioning plate; 113-Positioning slot; 410-Lifting linear module; 411-Frame; 500-Pressing stabilizing assembly; 501 - Frame; 502 - Second cylinder; 503 - Third cylinder; 504 - Pressing component. Detailed Implementation

[0045] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0046] This utility model provides an automated side spot welding device that can weld the spring sheet to the microphone body from the side during the welding process of the spring sheet of the microphone, thereby improving the welding quality and increasing the welding speed. By setting the welding fixture 300 on the turntable 200, the microphone body can be processed sequentially through the feeding, spring placement, welding, and unloading stations during the rotation of the turntable 200. During the welding of the spring, the microphone body and the spring are placed in the placement slot 311 of the fixture unit 310. At the same time, the swing drive unit 302 pushes the mounting plate 301 to swing, thereby causing the mounting plate 301 to drive the fixture unit 310 to swing. This allows the position of the fixture unit 310 corresponding to the laser head 401 to be adjusted. Specifically, by swinging the fixture unit 310, the welding point between the spring and the microphone body can be tilted so that the side of the welding point faces the laser head 401. This facilitates the laser head 401 to weld the spring and the microphone body from the side, thereby achieving side welding, improving the reliability and quality of the weld.

[0047] Specifically, such as Figure 1-7As shown in this embodiment, the present invention provides an automated side spot welding device, including a machine base 100 and an upper frame 101 mounted on the machine base 100 for providing an installation position. A feeder 102 for conveying spring pieces as workpieces is mounted on the table surface of the machine base 100, and a material handling robot 103 mounted on the upper frame 101 for transferring spring pieces is also provided. The device further includes a turntable 200, a welding fixture 300, and a laser welding assembly 400. The turntable 200 is mounted on the table surface of the machine base 100 and has a disc body 201 and an indexing device (not shown in the figure) for driving the disc body 201 to rotate. The welding fixture 300 includes multiple components evenly spaced along the circumference on the disc body 201. The welding fixture 300 includes a mounting plate 301, a fixture unit 310, and a swing arm. The drive unit 302 is rotatably mounted on the disk body 201 at the lower end of the mounting plate 301. The fixture unit 310 is fixedly mounted on the surface of the mounting plate 301 facing away from the disk body 201, and the top surface of the fixture unit 310 is formed with a placement groove 311 for transferring workpieces. The swing drive unit 302 is mounted on the disk body 201 and is connected to the mounting plate 301 for driving the mounting plate 301 to swing along the rotatable connection with the disk body 201. The laser welding assembly 400 is mounted on the table surface of the machine base 100 and suspended above the turntable 200, so that when the turntable 200 rotates, the welding fixtures 300 flow through the laser welding assembly 400 in sequence. The laser welding assembly 400 includes a laser head 401 corresponding to the welding fixtures 300 flowing under it.

[0048] During the welding of the spring clips, a welding fixture 300 for loading the spring clips and microphone body is mounted on a turntable 200. Driven by an indexer, the turntable 200 can rotate in four increments, passing through four stations: manual loading of the microphone body, a material handling robot 103 picking up the spring clips from the feeder 102 and transferring them to the welding fixture 300 for stacking with the microphone body, laser welding assembly 400 welding the stacked microphone body and spring clips, and manual unloading. The feeder 102 and the material handling robot 103 can employ existing technologies. Currently, during the welding process, the jig unit 310, which supports the microphone body and the spring, can swing horizontally under the drive of the swing drive unit 302, causing the jig unit 310 to tilt relative to the laser head 401. This allows the welding point between the microphone body and the spring to face the laser head 401, enabling the laser head 401 to weld the spring from the side. Compared to welding from the front, the different welding angle allows welding to be performed directly at the connection between the microphone body and the spring, thereby improving the welding quality, avoiding the occurrence of incomplete welds, and increasing the welding speed.

[0049] In this embodiment, the welding fixture 300 also includes a base plate 321, which is fixedly mounted on the table surface of the machine base 100 and hinged to the mounting plate 301.

[0050] The swing drive unit 302 includes a push rod 322 and a drive device 324. One end of the push rod 322 is rotatably connected to the base plate 321, and the other end is provided with a groove 323 along the length direction. A sliding block that limits the sliding within the groove 323 is provided on the upper end of the mounting plate 301. The drive device 324 is connected to the push rod 322 for driving the push rod 322 to swing, thereby causing the mounting plate to swing along the hinge.

[0051] That is, by driving the push rod 322 to swing, the mounting plate 301 swings along the hinge, which in turn causes the jig unit 310 to tilt and swing, so as to create an angular deviation between it and the laser head 401, enabling the laser head 401 to perform welding operations on the side.

[0052] In this embodiment, as Figure 4-5 As shown, the fixture unit 310 includes a fixture plate 312 and a first cylinder 313. A placement slot 311 is formed on the fixture plate 312. The first cylinder 313 is fixedly mounted on the mounting plate 301 and is connected to the fixture plate 312 for driving the fixture plate 312 to reciprocate vertically. Driven by the first cylinder 313, the fixture plate 312 can be raised upwards, thereby shortening the space between the fixture plate 312 and the laser head 401, making welding operations easier.

[0053] In this embodiment, in order to accurately align the welding positions of the laser head 401, the fixture unit 310 also includes a fine-tuning component 314. The fixture plate 312 is fixedly mounted on the fine-tuning component 314. The fine-tuning component 314 includes: a base 3141, a first fine-tuning slide 3142, and a second fine-tuning slide 3143. The base 3141 is throttle-connected to the first cylinder 313. The first fine-tuning slide 3142 is fixedly mounted on the base 3141. The second fine-tuning slide 3143 is mounted on the first fine-tuning slide 3142 and is driven by the first fine-tuning slide 3142 to move along a first predetermined direction. The fixture plate 312 is fixedly mounted on the second fine-tuning slide 3143 and is driven by the second fine-tuning slide 3143 to move along a second predetermined direction. In this embodiment, the first predetermined direction can be the direction along the X-axis, and the second predetermined direction is the direction of movement along the Y-axis. Thus, through the correction of the two fine-tuning slides, the welding position of the spring sheet on the jig plate 312 can be more accurately aligned with the laser head 401, thereby improving the welding accuracy.

[0054] In this embodiment, in order to improve the accuracy of the picking robot 103 when grabbing and transferring the spring sheet, a secondary positioning device 110 is also provided on the table of the machine 100, located next to the feeder 102. The secondary positioning device 110 is located on the moving trajectory of the picking robot 103 and is used to perform secondary positioning on the workpiece grabbed by the picking robot 103 from the feeder 102. The secondary positioning device 110 includes a vertical rod 111 and a positioning plate 112. Specifically, the vertical rod 111 is fixedly installed on the table of the machine 100; the positioning plate 112 is fixedly installed at the end of the vertical rod 111, and at least one positioning groove 113 is provided on the positioning plate 112. The positioning groove 113 has a bottom that conforms to the shape of the workpiece and allows the workpiece to be inserted. The inner wall of the positioning groove 113 is set to gradually slope outward so that the opening of the positioning groove 113 is flared. After the material handling robot 103 picks up the material from the feeder 102, it pre-places the spring piece in the positioning groove 113. The positioning groove 113 is used to perform secondary positioning of the spring piece, thereby determining the direction and position of the spring piece a second time, so as to ensure that the spring piece is placed on the fixture plate 312 more accurately.

[0055] In this embodiment, in order to check the state of the picking robot 103 grabbing the spring, a recognition camera (not shown in the figure) is also provided on the machine platform 100. The recognition camera is located next to the secondary positioning device 110 and on the moving trajectory of the picking robot 103, and the lens of the recognition camera is facing upward.

[0056] In this embodiment, in order to automatically adjust the height position of the laser head 401, such as Figure 2 As shown, the laser welding assembly 400 also includes a lifting linear module 410 and a frame 411. The lifting linear module 410 is vertically mounted on the machine base 100; the frame 411 is mounted on the lifting linear module 410 and is driven by the lifting linear module 410 to reciprocate vertically. The laser head 401 is mounted at the end of the frame 411. Under the control of the equipment controller, the lifting linear module 410 can automatically adjust the height position of the laser head 401, thereby enabling better interaction with the fixture unit 310 and ensuring welding quality.

[0057] In this embodiment, since the jig unit 310 can swing under the drive of the swing drive unit 302, in order to ensure that the jig unit 310 can remain stable during the welding process, a pressing and stabilizing component 500 corresponding to the laser welding component 400 is also provided on the table surface of the machine base 100. The pressing and stabilizing component 500 is used to press and stabilize the jig unit 310 loaded with the workpiece. It includes: a stand 501, a second cylinder 502 and a third cylinder 503. Specifically, the stand 501 is fixedly installed on the table surface of the machine base 100; the second cylinder 502 is fixedly installed on the upper end of the stand 501 and has a piston end extending toward the turntable 200; the third cylinder 503 is drivenly connected to the piston end of the second cylinder 502, and a pressing member 504 is provided on the piston rod extending downward of the third cylinder 503. When it is necessary to press and stabilize the fixture unit 310, the second cylinder 502 drives the third cylinder 503 to move toward the fixture unit 310. Then, the third cylinder 503 drives the pressing member 504 to press the fixture unit 310 downward, thereby preventing the fixture unit 310 from shaking and improving the stability of the fixture unit 310 during the welding process.

[0058] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. An automated side spot welding device, comprising a machine base and an upper frame disposed on the machine base for providing an installation position, wherein a feeder for conveying spring pieces as workpieces is disposed on the table surface of the machine base, and a picking robot disposed on the upper frame for transferring the spring pieces, characterized in that, It also includes: A turntable, which is set on the table of the machine tool and has a disc body and an indexing device for driving the disc body to rotate; A welding fixture, comprising a plurality of equally spaced components arranged on the disc body along a circumferential direction, the welding fixture comprising: A mounting plate, the lower end of which is rotatably mounted on the disk body. A fixture unit, wherein the fixture unit is fixedly mounted on the surface of the mounting plate opposite to the disc body, and the top surface of the fixture unit is formed with a placement groove for transferring workpieces, and A swing drive unit is disposed on the disc body and is connected to the mounting plate for driving the mounting plate to swing along the rotational connection point with the disc body. A laser welding assembly is disposed on the machine table and suspended above the turntable, such that when the turntable rotates, the welding fixtures flow sequentially under the laser welding assembly. The laser welding assembly includes a laser head corresponding to the welding fixtures flowing under it.

2. The automated side spot welding equipment according to claim 1, characterized in that, The welding fixture also includes a base plate, which is fixedly mounted on the machine table and hinged to the mounting plate. The swing drive unit includes: A push rod, one end of which is rotatably connected to the base plate, and the other end of which is provided with a sliding groove along its length. A sliding block that limits sliding within the sliding groove is provided at the upper end of the mounting plate. A driving device is connected to the push rod for driving the push rod to swing, thereby causing the mounting plate to swing along the hinge.

3. The automated side spot welding equipment according to claim 1, characterized in that, The fixture unit includes: A fixture plate, wherein the placement slot is formed on the fixture plate; The first cylinder is fixedly mounted on the mounting plate and is connected to the fixture plate for driving the fixture plate to reciprocate in the vertical direction.

4. The automated side spot welding equipment according to claim 3, characterized in that, The fixture unit further includes a fine-tuning component, and the fixture plate is fixedly mounted on the fine-tuning component. The fine-tuning component includes: A seat body, which is throttlely connected to the first cylinder; The first fine-tuning slide is fixedly mounted on the base. The second fine-tuning slide is disposed on the first fine-tuning slide and is driven by the first fine-tuning slide to move in a first predetermined direction; the fixture plate is fixedly mounted on the second fine-tuning slide and is driven by the second fine-tuning slide to move in a second predetermined direction.

5. The automated side spot welding equipment according to claim 1, characterized in that, A secondary positioning device is also provided on the table surface of the machine tool, located next to the feeder, and the secondary positioning device is located on the movement trajectory of the picking robot arm, for secondary positioning of the workpiece picked up by the picking robot arm from the feeder. The secondary positioning device includes: A support pole, which is fixedly installed on the table surface of the machine tool; A positioning plate is fixedly installed at the end of the upright, and at least one positioning groove is provided on the positioning plate. The positioning groove has a bottom that conforms to the shape of the workpiece and allows the workpiece to be embedded. The inner wall of the positioning groove is set to gradually slope outward so that the opening of the positioning groove is flared.

6. The automated side spot welding equipment according to claim 5, characterized in that, A recognition camera is also installed on the machine platform. The recognition camera is located next to the secondary positioning device and on the moving trajectory of the material handling robot, and the lens of the recognition camera is facing upward.

7. The automated side spot welding equipment according to claim 1, characterized in that, The laser welding assembly also includes: A lifting linear module, wherein the lifting linear module is vertically mounted on the machine base; A frame is mounted on the lifting linear module and driven by the lifting linear module to reciprocate in the vertical direction, and the laser head is mounted at the end of the frame.

8. The automated side spot welding equipment according to claim 7, characterized in that, The machine tool platform is also equipped with a pressing and stabilizing component corresponding to the laser welding component. The pressing and stabilizing component is used to press and stabilize the fixture unit carrying the workpiece, and includes: A support frame, which is fixedly installed on the table surface of the machine tool; The second cylinder is fixedly mounted on the upper end of the stand and has a piston end extending toward the turntable. The third cylinder is connected to the piston end of the second cylinder, and a pressing member is provided on the piston rod of the third cylinder that extends downward.

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