Side seam welding device with side fixing function for low-voltage switch cabinet

Abstract

The invention discloses an edge seam welding device with an edge fixing function for a low-voltage switch cabinet, and relates to the technical field of welding, the edge seam welding device comprises a fixed base, the fixed base is slidably connected with sliding frames symmetrically distributed along the fixed base, the sliding frames are fixed on the fixed base through nuts, and the sliding frames are slidably connected with clamping frames in the vertical direction; the clamping frames are used for fixing side seams from the outer portion of the cabinet body in the welding process, and tension springs are fixedly connected between the sliding frames and the adjacent clamping frames. The cabinet body is positioned through the clamping frame before welding, the side edge seam of the cabinet body is limited through the clamping frame during welding, and the bevel edge seam of the top of the cabinet body is limited through the pressing frame, so that the clamping frame and the pressing frame do not affect welding of the edge seam of the cabinet body, pressing and withdrawing can be conducted at the same time during welding, the stability of welding of the edge seam of the cabinet body is ensured, and the welding quality is improved. Therefore, during welding, cracking of the side seams of the cabinet body can be prevented in real time, and the final welding effect is improved.

Description

Technical Field

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

[0002] In the manufacturing process of the switch cabinet, a piece of iron plate is first bent to form the required structural shape; then the accuracy of its size and structure is ensured through a forming process; finally, the edge welding and fixed edge welding are carried out to ensure the stability and sealing of the entire switch cabinet, and to ensure its electrical performance and safety 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 accuracy. In addition, due to the memory of metal, the bent seam 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 an edge seam welding device for a low-voltage switch cabinet with an edge fixing function.

[0005] A side seam welding device for a low-voltage switch cabinet with a fixed edge function includes a fixed base, the fixed base is slidably connected to a slide symmetrically distributed along the fixed base, the slide is fixed to the fixed base by a nut, the slide is slidably connected to a clamping frame in the up and down directions, the clamping frame is used to fix the side seams from the outside of the cabinet during welding, a tension spring is fixedly connected between the slide and the adjacent clamping frame, the slide is fixedly connected 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 fixedly connected to a pressure rod, the pressure rod moves downward to contact the adjacent clamping frame, the welding part of the two-axis welding machine is slidably connected to a pressure frame used to fix the bevel seam of the cabinet during welding, and a first spring is fixedly connected between the welding part of the two-axis welding machine and the adjacent pressure frame.

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

[0008] As a preferred technical solution of the present invention, the elastic coefficient value of the third spring is smaller than the elastic coefficient value 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 clamping frame, and a fourth spring is fixedly connected 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-shaped surface, and the card frame moves downward to be pressed and matched with the wedge-shaped 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 with at least one lever for automatically releasing the locking position of the locking frame on 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 inclined toward one side, and the unlocking frame limits the top of the lever, and the bottom of the lever is pressed and matched 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 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, 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 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 fixes the clamping frame at the lowest position by means of a locking frame, and then controls the welding part of the two-axis welding machine to move upward along the Y-axis to reset. During this period, the welded cabinet is taken away, and then the next cabinet to be welded is placed, so that the step of rising and resetting the welding part is synchronously performed with the step of taking and placing the cabinet, thereby greatly improving the overall welding efficiency.

[0017] During the initial downward welding, the present invention automatically releases the locking of the locking frame by the locking frame through the lever, so that the locking frame slides upward and resets under the action of the tension spring. During the reset period, the side seams of the cabinet body that are expanded and curled outward due to metal memory can be pre-smoothed 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 three-dimensional structural schematic diagram of the fixed base, the slide, the nut and other components of the present invention.

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the components such as the slide, nut and bracket of the present invention.

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

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

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

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the unlocking frame, the 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 card frame and the pressure plate of the present invention.

[0026] Among them: 1-fixed base, 2-slide, 3-nut, 4-cage, 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 is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0028] Embodiment 1: A side seam welding device for a low voltage switch cabinet with a side fixing function, combined with the attached Figure 1 To Attachment 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 with a clamping frame 4 in the up and down direction, when welding, the clamping frame 4 fixes the side seam from the outside of the cabinet, the bottom of the slide 2 and the bottom of the adjacent clamping frame 4 are fixedly connected with a tension spring 5, the slide 2 A two-axis welding machine 6 is fixedly connected to the top, and the welding part of the two-axis welding machine 6 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. A pressure rod 7 is fixedly connected 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 along the up and down directions. The pressure frame 8 presses the bevel seam of the cabinet during welding, and a first spring 9 is fixedly connected 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 side 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 to 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, the pressure frame 8 and the 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 bracket 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 on the top of the cabinet is completed. At this time, the welding part of the two-axis welding machines 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 during welding to ensure the stability of the bevel seam welding, thereby preventing the bevel seam 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 during welding to ensure the stability of the side seam welding, thereby preventing the side seam from cracking in real time during welding.

[0031] After the cabinet is welded, the welded cabinet is taken out and the next cabinet to be welded is placed on the fixed base 1, and then the welding part of the two-axis welding machine 6 is controlled to move upward along the Y axis to reset, and the welding is repeated.

[0032] Combined with 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 at the middle position of the bottom of the cabinet, a second spring 11 symmetrically distributed along the positioning frame 10 is fixedly connected between the positioning frame 10 and the upper part of the fixed base 1, an electric telescopic rod 12 is fixedly connected to the middle of the upper part of the fixed base 1, and 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, 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 fixedly connected between the positioning frame 10 and the telescopic frame 13, and the elastic coefficient value of the third spring 15 is less than the elastic coefficient value of the second spring 11.

[0033] On the basis of positioning and limiting the side seams of the cabinet from the outside by means of the clamping frame 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 by means of 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 through the pull rope 14 to slide along the positioning frame 10 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, thereby driving the positioning frame 10, the telescopic frame 13, the pull rope 14 and the third spring 15 to move upward as a whole. The second spring 11 begins to be compressed to leave space for the next cabinet to be welded.

[0034] After placing the next cabinet to be welded 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, the telescopic frame 13, the pull rope 14 and the 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 get stuck inside the side seam of the cabinet.

[0035] Embodiment 2: Based on embodiment 1, Figure 1 and attached Figure 6 , and 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 fixing part of the corresponding two-axis welding machine 6 along the horizontal direction. The end surface 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 fixedly connected 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 placing and taking the cabinet, it is necessary to perform the operation of placing and taking 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 the cabinet is placed and taken. However, the sequential operation of placing and taking the cabinet and the step of the welding part rising will significantly reduce the welding efficiency. Therefore, the following specific steps are performed to synchronize the step of the welding part rising and resetting with the step of placing and taking the cabinet: 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, so that the locking frame 16 slides to 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 in 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 taken away and the next cabinet to be welded can be placed, thereby greatly improving the overall welding efficiency.

[0037] Combined with 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, the lower side of the unlocking frame 18 is rotatably connected to two levers 19, the lever 19 is inclined to one side, and the lower part of the unlocking frame 18 limits the top of the lever 19, and the bottom of the lever 19 is squeezed and matched with the adjacent locking frame 16. When the lever 19 moves from top to bottom to contact the locking frame 16, the locking frame 16 is squeezed by the lever 19 and moves to one side of the compressed fourth spring 17 to unlock. When the lever 19 moves from bottom to top to contact the locking frame 16, the lever 19 is squeezed by the locking frame 16 and swings downward to avoid. A torsion spring 20 is fixed between the lever 19 and the adjacent unlocking frame 18.

[0038] During the downward welding, it is necessary to timely release the locking position of the locking frame 16 on the card frame 4. The specific unlocking operation is as follows: when the welding part of the two-axis welding machine 6 moves downward along the Y axis for welding, it will also drive the unlocking frame 18 to move downward synchronously, thereby driving the lever 19 to move downward until it contacts the locking frame 16. Affected by the limiting effect of the lower part of the unlocking frame 18, the locking frame 16 cannot squeeze the lever 19 to swing upward. Therefore, the lever 19 squeezes the locking frame 16 to slide to the side of the compressed fourth spring 17 until the lever 19 moves downward to the bottom of the locking frame 16. The fourth spring 17 resets and drives the locking frame 16 to slide in the opposite direction and reset. In this way, during the initial downward welding, the locking position of the locking frame 16 on the card frame 4 can be automatically released, so that the card frame 4 slides upward and resets under the action of the tension spring 5. During the resetting period, the card frame 4 can also pre-smooth the side seams of the cabinet body that have expanded and curled outward due to metal memory from bottom to top to prevent loose welding.

[0039] 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, the torsion spring 20 is reset to drive 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.

[0040] Embodiment 3: Based on Embodiment 2, Figure 8 Two pressing plates 21 are fixedly connected to the upper part of the bracket 4. 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 side surfaces of the cabinet from bulging during welding.

[0041] 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 shall 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 part of the two-axis welding machine (6) moving along the X-axis and the Y-axis, and being used to successively weld the top bevel seam and the side seam of the cabinet body, characterized in that: The slide (2) is slidably connected to a clamping frame (4) in the up-down direction. The clamping frame (4) is used to fix the side seam from the outside of the cabinet during welding. A tension spring (5) is fixedly connected between the slide (2) and the adjacent clamping frame (4). The welding part of the two-axis welding machine (6) is fixedly connected to a pressure rod (7). The pressure rod (7) moves downward to contact the adjacent clamping frame (4). The welding part of the two-axis welding machine (6) is slidably connected to a pressure frame (8) used to fix the oblique side seam of the cabinet during welding. A first spring (9) is fixedly connected between the welding part of the two-axis welding machine (6) and the adjacent pressure frame (8).

2. A side seam welding device for a low voltage switch cabinet with a fixed edge function as claimed in claim 1, characterized in that: The cabinet further comprises a positioning frame (10), the positioning frame (10) being slidably connected to a fixed base (1), a second spring (11) being fixedly connected between the positioning frame (10) and the fixed base (1), a motorized telescopic rod (12) being fixedly connected to the fixed base (1), a telescopic frame (13) being slidably connected to the positioning frame (10), the telescopic frame (13) being used to fix the side seam from inside the cabinet during welding, a pull rope (14) being fixedly connected between the telescopic frame (13) and the telescopic end of the motorized telescopic rod (12), and a third spring (15) being fixedly connected between the positioning frame (10) and the telescopic frame (13).

3. A side seam welding device for a low voltage switch cabinet 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 switch cabinet with a side fixing 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 switch cabinet with a side fixing function as claimed in claim 4, characterized in that: It also includes a locking frame (16) corresponding to the two-axis welding machine (6), the locking frame (16) being slidably connected to the lower side of the fixing portion of the corresponding two-axis welding machine (6), the locking frame (16) being used to lock the adjacent clamping frame (4), and a fourth spring (17) being fixedly connected between the locking frame (16) and the corresponding two-axis welding machine (6).

6. A side seam welding device for a low voltage switch cabinet with a side fixing function as claimed in claim 5, characterized in that: The end surface of the locking frame (16) close to the adjacent card frame (4) is arranged as a wedge-shaped surface, and the card frame (4) moves downward to be pressed and matched with the wedge-shaped surface of the adjacent locking frame (16).

7. A side seam welding device for a low voltage switch cabinet with a side fixing function as claimed in claim 6, characterized in that: The invention also comprises an unlocking frame (18) corresponding to the two-axis welding machine (6), the unlocking frame (18) being fixedly connected to the welding part of the corresponding two-axis welding machine (6), and at least one lever (19) for automatically releasing the locking position of the locking frame (16) on the card frame (4) is rotatably connected to a side of the unlocking frame (18) close to the adjacent locking frame (16), and a torsion spring (20) is fixedly connected between the lever (19) and the adjacent unlocking frame (18).

8. A side seam welding device for a low voltage switch cabinet with a side fixing function as claimed in claim 7, characterized in that: The lever (19) is tilted toward one side, and the unlocking frame (18) limits the top of the lever (19), and the bottom of the lever (19) is pressed and matched with the adjacent locking frame (16).

9. A side seam welding device for a low voltage switch cabinet with a side fixing function as claimed in claim 8, characterized in that: Two pressing plates (21) are fixedly connected to the bracket (4), and 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.

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