A side seam welding device for low-voltage switchgear with fixed edge function

Abstract

The present invention discloses a side seam welding device for a low-voltage switchgear with a fixed edge function, which relates to the technical field of welding and includes a fixed base, wherein the fixed base is slidably connected to a slide symmetrically distributed along the fixed base, the slide being fixed to the fixed base by a nut, and the slide being slidably connected to a clamping frame in the up-down direction, the clamping frame being used to fix the side seams from the outside of the cabinet during welding, and a tension spring being fixed between the slide and the adjacent clamping frame. The present invention positions the cabinet by the clamping frame before welding, and limits the side seams of the cabinet by the clamping frame during welding, and limits the oblique seams of the cabinet top by the pressing frame, so that the clamping frame and the pressing frame do not affect the welding of the cabinet side seams, and can press and retreat simultaneously during welding, thereby ensuring the stability of the cabinet side seam welding, thereby preventing the cabinet side seam from cracking in real time during welding, and improving the final welding effect.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a side seam welding device for a low-voltage switch cabinet with a side fixing function. Background Art

[0002] During the manufacturing process of the switchgear, a piece of iron plate is first bent into the required structural shape; then a forming process is performed to ensure the accuracy of its size and structure; finally, side seam welding and fixed edge welding are performed to ensure the stability and sealing of the entire switchgear, ensuring its electrical performance and safety and reliability.

[0003] In traditional edge welding, fixed-edge welding is highly dependent on the workers' experience and operating skills. The differences in skill levels among different workers lead to unstable welding quality, making it difficult to ensure consistency and precision. In addition, due to the memory of metal, the bent seam area is prone to outward expansion and curling, and the cracking of the edge seam will ultimately affect the subsequent welding effect. Summary of the Invention

[0004] In order to improve the positioning accuracy of the cabinet before welding and improve the tightness of the bent edge seam during welding, the present invention provides a edge seam welding device for a low-voltage switch cabinet with an edge fixing function.

[0005] The cam is fixed to the fixed base and the sliding bracket is fixed to the fixed base by a nut. The cam is slidably connected to the fixed base and the sliding bracket is fixed to the fixed base by a nut. The cam is slidably connected to the clamping bracket in the up and down directions. The clamping bracket is used to fix the side seams from the outside of the cabinet during welding. A tension spring is fixed between the cam and the adjacent clamping bracket. The cam is fixed to a two-axis welding machine. The welding part of the two-axis welding machine moves along the X-axis and the Y-axis and is used to weld the top bevel seam and the side seam of the cabinet in turn. The welding part of the two-axis welding machine is fixed to a pressure rod, which moves downward to contact the adjacent clamping bracket. The welding part of the two-axis welding machine is slidably connected to a pressure rack for fixing the bevel seam of the cabinet during welding. A first spring is fixed between the welding part of the two-axis welding machine and the adjacent pressure rack.

[0006] As a preferred technical solution of the present invention, it also includes a positioning frame, which is slidably connected to the fixed base, and a second spring symmetrically distributed along the positioning frame is fixedly connected between the positioning frame and the fixed base, and an electric telescopic rod is fixed to the fixed base. The positioning frame is slidably connected to a telescopic frame symmetrically distributed along the positioning frame, and the telescopic frame is used to fix the side seam from the inside of the cabinet during welding, a pull rope is fixed between the telescopic frame and the telescopic end of the electric telescopic rod, and a third spring is fixedly connected between the positioning frame and the telescopic frame.

[0007] As a preferred technical solution of the present invention, the telescopic frame is composed of a fixing portion and an adjusting portion. The adjusting portion slides on the fixing portion, and the fixing portion and the adjusting portion are fixed by bolts.

[0008] As a preferred technical solution of the present invention, the elastic coefficient of the third spring is smaller than the elastic coefficient of the second spring.

[0009] As a preferred technical solution of the present invention, it also includes a locking frame corresponding to the two-axis welding machine, the locking frame is slidably connected to the lower side of the fixed part of the corresponding two-axis welding machine, the locking frame is used to lock the adjacent card frame, and a fourth spring is fixed between the locking frame and the corresponding two-axis welding machine.

[0010] As a preferred technical solution of the present invention, the end surface of the locking frame close to the adjacent card frame is set as a wedge surface, and the card frame moves downward to be squeezed and matched with the wedge surface of the adjacent locking frame.

[0011] As a preferred technical solution of the present invention, it also includes an unlocking frame corresponding to the two-axis welding machine, the unlocking frame is fixedly connected to the welding part of the corresponding two-axis welding machine, and the unlocking frame is rotatably connected to one side of the adjacent locking frame to have at least one lever for automatically releasing the locking frame from the card frame, and a torsion spring is fixedly connected between the lever and the adjacent unlocking frame.

[0012] As a preferred technical solution of the present invention, the lever is tilted toward one side, and the unlocking frame limits the top of the lever, and the bottom of the lever is squeezed and fitted with the adjacent locking frame.

[0013] As a preferred technical solution of the present invention, two pressing plates are fixedly connected to the bracket, and the two adjacent pressing plates are vertically distributed. The pressing plates are used to flatten the side surfaces near the side seams of the cabinet.

[0014] The beneficial effects are as follows: the present invention positions the cabinet body by means of the clamping frame before welding, and limits the side seams of the cabinet body by means of the clamping frame during welding, and limits the oblique seams of the top of the cabinet body by means of the pressing frame, so that the clamping frame and the pressing frame neither affect the welding of the cabinet body side seams, but can also press and retreat at the same time during welding, thereby ensuring the stability of the cabinet body side seam welding, thereby preventing the cabinet body side seams from cracking in real time during welding, and improving the final welding effect.

[0015] The present invention not only positions and limits the side seams of the cabinet from the outside by using the clamping frame, but also auxiliary fixes and limits the side seams of the cabinet from the inside by using the telescopic frame, thereby enhancing the effects of accurate positioning and stable welding of the cabinet.

[0016] The present invention first fixes the clamping frame at the lowest position through the locking frame, and then controls the welding part of the two-axis welding machine to move upward along the Y axis and reset. During this period, the welded cabinet is removed and the next cabinet to be welded is placed on it, so that the steps of rising and resetting the welding part and taking and placing the cabinets are carried out synchronously, thereby greatly improving the overall welding efficiency.

[0017] During the initial downward welding, the present invention automatically releases the lock of the locking frame from the locking frame through the push rod, so that the locking frame slides upward and resets under the action of the tension spring. During the reset period, the locking frame can also pre-smooth the cabinet side seams that have expanded and curled outward due to metal memory from bottom to top to prevent loose welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the fixed base, slide, nut and other components of the present invention.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the slide, nut, clamping frame and other components of the present invention.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the positioning frame, the second spring and the electric telescopic rod and other components of the present invention.

[0022] Figure 5 The figure is a schematic diagram of the three-dimensional structure of the electric telescopic rod, telescopic frame and pull rope of the present invention.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the locking frame, the fourth spring and the unlocking frame of the present invention.

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the unlocking frame, the shifting lever, the torsion spring and other components of the present invention.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the clamping frame and the pressing plate of the present invention.

[0026] Among them: 1-fixed base, 2-slide, 3-nut, 4-clamping frame, 5-tension spring, 6-two-axis welding machine, 7-pressure rod, 8-pressure frame, 9-first spring, 10-positioning frame, 11-second spring, 12-electric telescopic rod, 13-telescopic frame, 14-pull rope, 15-third spring, 16-locking frame, 17-fourth spring, 18-unlocking frame, 19-dial lever, 20-torsion spring, 21-pressure plate. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the present invention.

[0028] Example 1: A side seam welding device for a low voltage switchgear with a fixed edge function, combined with the attached Figure 1 To the attached Figure 3 , including a fixed base 1, the cabinet to be welded is placed in the middle of the fixed base 1, the front and rear sides of the fixed base 1 are slidably connected with slides 2 symmetrically distributed along the fixed base 1, after adjusting the position of the slide 2, the slide 2 can be fixed to the fixed base 1 by nuts 3, the slide 2 is slidably connected to the clamp 4 in the up and down directions, and the clamp 4 is fixed to the side seam from the outside of the cabinet during welding, and a tension spring 5 is fixed between the bottom of the slide 2 and the bottom of the adjacent clamp 4. The slide 2 A two-axis welding machine 6 is fixed to the top, and the welding part of the two-axis welding machine 6 moves along the X-axis and Y-axis, and is used to weld the top bevel seam and side seam of the cabinet in turn. A pressure rod 7 is fixed to the bottom side of the welding part of the two-axis welding machine 6, and the pressure rod 7 moves downward to contact the top side of the adjacent bracket 4. The welding part of the two-axis welding machine 6 is slidably connected to a pressure frame 8 in the up and down directions. The pressure frame 8 presses the bevel seam of the cabinet during welding. A first spring 9 is fixed between the welding part of the two-axis welding machine 6 and the adjacent pressure frame 8.

[0029] When using this welding device for welding, it is mainly divided into center positioning operation and edge welding operation. The specific center positioning operation is as follows: Place the cabinet to be welded (such as Figure 2 In the figure, the side of the bracket 4 near the front left shows the partial state of the cabinet) is placed in the middle of the fixed base 1, and then the slide 2 is pushed to slide toward the side close to the cabinet until the slide 2 drives the bracket 4 to clamp the four side seams of the cabinet from the outside. At this time, the slide 2 is locked by tightening the nut 3, so that the bracket 4 positions and tightens the four side seams of the cabinet. At this time, the bevel seam on the top of the cabinet is located below the welding part of the two adjacent axis welding machines 6.

[0030] After completing the above positioning operation, the specific edge welding operation is as follows: first control the welding part of the two-axis welding machine 6 to move downward along the Y axis, and the pressure rod 7, pressure frame 8 and first spring 9 move downward accordingly. The pressure frame 8 first moves down to contact the bevel seam adjacent to the top of the cabinet, and continues to control the welding part of the two-axis welding machine 6 to move downward along the Y axis. The first spring 9 is compressed until the welding part of the two-axis welding machine 6 contacts the bevel seam adjacent to the top of the cabinet. At this time, the pressure frame 8 presses the bevel seam on the top of the cabinet, and the pressure rod 7 also moves down to contact the top of the clamping frame 4. Then, the welding part of the two-axis welding machine 6 is controlled to move inward along the X axis to the inner end of the bevel seam on the top of the cabinet. Then, the welding part of the two-axis welding machine 6 is controlled to start welding, and the two axes are controlled while welding. The welding part of the axis welding machine 6 moves outward along the X-axis until the bevel seam welding of the top of the cabinet is completed. At this time, the welding part of the two-axis welding machine 6 is located at the top of the side seam of the cabinet. In this way, the pressing frame 8 does not affect the welding of the bevel seam, but can also press and retreat while welding to ensure the stability of the bevel seam welding, so that the bevel seam can be prevented from cracking in real time during welding. Then, the welding part of the two-axis welding machine 6 is controlled to move downward along the Y-axis while welding. At the same time, the pressure rod 7 drives the clamping frame 4 to move downward synchronously, and the tension spring 5 is stretched until the side seam welding of the cabinet is completed. In this way, the clamping frame 4 does not affect the welding of the side seam, but can also press and retreat while welding to ensure the stability of the side seam welding, and prevent the side seam from cracking in real time during welding.

[0031] After welding the cabinet, take out the welded cabinet and place the next cabinet to be welded on the fixed base 1. Then control the welding part of the two-axis welding machine 6 to move upward along the Y axis and reset, and repeat the welding.

[0032] Combined with attachment Figure 1 , Attachment Figure 4 and attached Figure 5 , also includes a positioning frame 10, the positioning frame 10 slides up and down along the fixed base 1, the bottom of the positioning frame 10 is pressed against the middle position of the bottom of the cabinet, a second spring 11 symmetrically distributed along the positioning frame 10 is fixed between the positioning frame 10 and the upper part of the fixed base 1, an electric telescopic rod 12 is fixed to the middle of the upper part of the fixed base 1, the front and rear sides of the positioning frame 10 are slidably connected with a telescopic frame 13 symmetrically distributed along the positioning frame 10, the telescopic frame 13 is composed of a fixed part and an adjusting part, the adjusting part slides on the fixed part, and the fixed part and the adjusting part are fixed by bolts. First, loosen the bolts and adjust the adjusting part of the telescopic frame 13 to contact the bevel seam inside the cabinet, and then tighten the bolts to fix it, so that the telescopic frame 13 can be fixed to the side seam from the inside of the cabinet during welding. A pull rope 14 is fixed between the telescopic frame 13 and the telescopic end of the electric telescopic rod 12, and a third spring 15 is fixed between the positioning frame 10 and the telescopic frame 13. The elastic coefficient of the third spring 15 is less than the elastic coefficient of the second spring 11.

[0033] On the basis of positioning and limiting the side seams of the cabinet from the outside through the bracket 4, in order to enhance the fixing effect, it is also necessary to position and limit the side seams of the cabinet from the inside through the telescopic frame 13. The specific operation is as follows: when the welding of the previous cabinet is completed, the electric telescopic rod 12 is immediately controlled to shorten upward. The electric telescopic rod 12 pulls the telescopic frame 13 along the positioning frame 10 through the pull rope 14 to slide toward the side of the compressed third spring 15, so that the telescopic frame 13 extends into the positioning frame 10. When the pull rope 14 can no longer pull the telescopic frame 13, the electric telescopic rod 12 continues to shorten upward, driving the positioning frame 10, the telescopic frame 13, the pull rope 14 and the third spring 15 to move upward as a whole, and the second spring 11 begins to be compressed to leave space for the next cabinet to be welded.

[0034] After the next cabinet to be welded is placed on the fixed base 1, the electric telescopic rod 12 is controlled to extend downward, and the second spring 11 is reset first, so that the positioning frame 10, telescopic frame 13, pull rope 14 and third spring 15 move downward as a whole, and the third spring 15 is reset later, so that the telescopic frame 13 slides out of the positioning frame 10 to be stuck inside the side seam of the cabinet.

[0035] Example 2: Based on Example 1, Figure 1 and attached Figure 6 , also includes a locking frame 16 corresponding to the two-axis welding machine 6, the locking frame 16 is slidably connected to the lower side of the fixed part of the corresponding two-axis welding machine 6 in the horizontal direction, and the end face of the locking frame 16 close to the adjacent card frame 4 is set to a wedge-shaped surface. The card frame 4 moves downward and is squeezed and matched with the wedge-shaped surface of the adjacent locking frame 16. The locking frame 16 is used to lock the adjacent card frame 4. A fourth spring 17 is fixed between the locking frame 16 and the corresponding two-axis welding machine 6.

[0036] In the above process, in order to prevent the bracket 4 from blocking the cabinet when taking and placing the cabinet, it is necessary to take and place the cabinet when the bracket 4 is pressed to the lowest position by the welding part of the two-axis welding machine 6, and then control the welding part of the two-axis welding machine 6 to rise and reset after taking and placing the cabinet. However, the sequential operation of taking and placing the cabinet and the step of raising the welding part will significantly reduce the welding efficiency. Therefore, the following specific steps are adopted to synchronize the step of raising and resetting the welding part with the step of taking and placing the cabinet:

[0037] When the card frame 4 moves downward under the pressure of the pressure rod 7, it will contact the wedge-shaped surface of the locking frame 16 on the same side. The card frame 4 squeezes the wedge-shaped surface of the locking frame 16, causing the locking frame 16 to slide toward the side of the compressed fourth spring 17. When the card frame 4 moves downward to disengage from the wedge-shaped surface of the locking frame 16 on the same side, the fourth spring 17 resets and drives the locking frame 16 to reset to the top of the card frame 4. In this way, the card frame 4 is first fixed to the lowest position, and then the welding part of the two-axis welding machine 6 is controlled to move upward along the Y-axis to reset. During this period, the welded cabinet can be removed and the next cabinet to be welded can be placed, thereby greatly improving the overall welding efficiency.

[0038] Combined with attachment Figure 1 , Attachment Figure 6 and attached Figure 7 , also includes an unlocking frame 18 corresponding to the two-axis welding machine 6, the unlocking frame 18 is fixedly connected to the welding part of the corresponding two-axis welding machine 6, and the lower side of the unlocking frame 18 is rotatably connected to two driving rods 19, the driving rod 19 is tilted to one side, and the lower part of the unlocking frame 18 limits the top of the driving rod 19, and the bottom of the driving rod 19 is squeezed and matched with the adjacent locking frame 16. When the driving rod 19 moves from top to bottom to contact the locking frame 16, the locking frame 16 is squeezed by the driving rod 19 to move to one side of the compressed fourth spring 17 to unlock, and when the driving rod 19 moves from bottom to top to contact the locking frame 16, the driving rod 19 is squeezed by the locking frame 16 to swing downward to avoid, and a torsion spring 20 is fixed between the driving rod 19 and the adjacent unlocking frame 18.

[0039] When the locking mechanism 16 is in a state of being pressed downwards, the locking mechanism 16 is released, and the locking mechanism 16 is released, so that the locking mechanism 16 is released and the locking mechanism 16 is in a state of being pressed downwards.

[0040] When the welding part of the two-axis welding machine 6 moves upward along the Y-axis, the lever 19 will move upward. During this process, the lever 19 is squeezed by the locking frame 16, and the torsion spring 20 is deformed. When the lever 19 is disengaged from the locking frame 16 upward, the torsion spring 20 is reset and drives the lever 19 to swing upward and reset. In this way, the lever 19 can smoothly cross the locking frame 16 during the upward movement without releasing the locking position of the locking frame 16 on the card frame 4.

[0041] Example 3: Based on Example 2, Figure 8 The upper part of the card frame 4 is fixed with two pressing plates 21, and the two adjacent pressing plates 21 are vertically distributed. The pressing plates 21 are used to flatten the side surfaces near the side seams of the cabinet to prevent the sides of the cabinet from bulging during welding.

[0042] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A side seam welding device for a low-voltage switch cabinet with a fixed edge function, comprising a fixed base (1), the fixed base (1) being slidably connected to a slide (2) symmetrically distributed along the fixed base (1), the slide (2) being fixed to the fixed base (1) by a nut (3), the slide (2) being fixed to a two-axis welding machine (6), the welding portion of the two-axis welding machine (6) moving along the X axis and the Y axis, and being used for welding the top bevel seam and the side seam of the cabinet body in sequence, characterized in that: The slide (2) is connected to a clamping frame (4) in a sliding manner in the up-down direction. The clamping frame (4) is used to fix the side seam of the cabinet from the outside during welding. A tension spring (5) is fixed between the slide (2) and the adjacent clamping frame (4). The welding portion of the two-axis welding machine (6) is fixed to a pressure rod (7). The pressure rod (7) moves downward to contact the adjacent clamping frame (4). The welding portion of the two-axis welding machine (6) is connected to a pressure frame (8) for fixing the oblique side seam of the cabinet during welding. A first spring (9) is fixed between the welding portion of the two-axis welding machine (6) and the adjacent pressure frame (8). It also includes a locking frame (16) corresponding to the two-axis welding machine (6), the locking frame (16) is slidably connected to the lower side of the fixed portion of the corresponding two-axis welding machine (6), the locking frame (16) is used to lock the adjacent card frame (4), and a fourth spring (17) is fixed between the locking frame (16) and the corresponding two-axis welding machine (6); The end surface of the locking frame (16) close to the adjacent card frame (4) is set as a wedge-shaped surface, and the card frame (4) moves downward to be squeezed and matched with the wedge-shaped surface of the adjacent locking frame (16); The invention also includes an unlocking frame (18) corresponding to the two-axis welding machine (6), the unlocking frame (18) being fixed to the welding portion of the corresponding two-axis welding machine (6), and a side of the unlocking frame (18) close to the adjacent locking frame (16) being rotatably connected to at least one lever (19) for automatically releasing the locking frame (16) from locking the clamping frame (4), and a torsion spring (20) being fixed between the lever (19) and the adjacent unlocking frame (18); The shift rod (19) is tilted toward one side, and the unlocking frame (18) limits the top of the shift rod (19), and the bottom of the shift rod (19) is squeezed and matched with the adjacent locking frame (16).

2. A side seam welding device for a low-voltage switchgear with a fixed edge function as claimed in claim 1, characterized in that: The invention also includes a positioning frame (10), the positioning frame (10) is slidably connected to the fixed base (1), a second spring (11) is fixedly connected between the positioning frame (10) and the fixed base (1), and the second spring (11) is symmetrically distributed along the positioning frame (10). The fixed base (1) is fixedly connected to an electric telescopic rod (12), the positioning frame (10) is slidably connected to a telescopic frame (13) symmetrically distributed along the positioning frame (10), and the telescopic frame (13) is used to fix the side seam from the inside of the cabinet during welding. A pull rope (14) is fixedly connected between the telescopic frame (13) and the telescopic end of the electric telescopic rod (12), and a third spring (15) is fixedly connected between the positioning frame (10) and the telescopic frame (13).

3. A side seam welding device for a low-voltage switchgear with a fixed edge function as claimed in claim 2, characterized in that: The telescopic frame (13) consists of a fixing portion and an adjusting portion, the adjusting portion slides on the fixing portion, and the fixing portion and the adjusting portion are fixed by bolts.

4. A side seam welding device for a low-voltage switchgear with a fixed edge function as claimed in claim 3, characterized in that: The elastic coefficient value of the third spring (15) is smaller than the elastic coefficient value of the second spring (11).

5. A side seam welding device for a low-voltage switchgear with a fixed edge function as claimed in claim 4, characterized in that: Two pressing plates (21) are fixedly connected to the card frame (4), and the two adjacent pressing plates (21) are vertically distributed. The pressing plates (21) are used to flatten the side surfaces near the side seams of the cabinet body.

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