Transformer shell bending device

Abstract

The invention relates to the technical field of shell bending, in particular to a transformer shell bending device which comprises a rack, a base fixedly arranged on the rack and a pressing plate arranged on the rack in an up-down sliding mode, and is characterized in that placing frames rotating around the base are arranged on the two sides of the base; a transmission assembly connected with the placing frame is arranged on the rack, a top plate is arranged on the pressing plate, and when the pressing plate moves downwards to bend a plate on the base, the top plate is matched with the transmission assembly to drive the placing frame to synchronously rotate from a horizontal state to an inclined state; placing grooves are formed in the placing frames in an up-down penetrating mode, an adjusting assembly is arranged on the rack, a positioning rod is arranged on the adjusting assembly, the adjusting assembly is used for driving the positioning rod to move up and down and front and back in the placing grooves, and the front edge and the rear edge, to be bent, of the plate are moved to the base through the two placing frames; the transformer shell bending device has the effect of improving the bending efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of shell bending, and particularly relates to a transformer shell bending device. Background Art

[0002] Bending is an important process link in the processing of transformer shells. The specific angle and bending radius are adjusted according to the actual situation. The main bending parts include the edge of the box cover, the inlet and outlet wire pipes, the reinforcing ribs, and the installation interfaces, etc. The purpose of bending is to ensure structural strength, sealing performance, electrical safety, and facilitate installation and maintenance. For example, the geometric shape formed by bending can improve the anti-twisting ability of the shell, reduce deformation caused by external pressure, and in addition, the tight fit between the shells can be achieved through bending, and the use of sealant can effectively prevent dust and moisture.

[0003] A patent document with the publication number of CN218108940U discloses a metal plate bending table for transformer production, including a support frame. Two limiting plates are fixed on the support frame. An extrusion groove is formed on the support frame. An extrusion block is arranged between the two limiting plates, and the extrusion block is adapted to the extrusion groove. In this application, the metal plate to be bent is placed between the two limiting plates. The position of the metal plate is restricted by the limiting plates. The extrusion component drives the extrusion block to move in the extrusion groove. Since bending blocks are arranged on both sides of the extrusion block, an inclined block is fixed at the bottom of the bending block, and the inclined block is adapted to the bending groove. Thus, when the extrusion block moves downward, it can drive the inclined block to rotate along the hinge joint of the bending block and the support frame, and then the extrusion block and the bending block can be perpendicular to each other to bend the metal plate.

[0004] However, the following problems still exist in this solution. When bending is required on both the front and back sides of the shell plate, after bending one side, it is necessary to manually take out the plate and then turn it around to bend the other side. Especially for plates with a large area, this operation is more cumbersome. And after adjusting and replacing the position of the plate, it is necessary to reposition the plate, which affects the bending efficiency. Summary of the Invention

[0005] The present invention provides a transformer shell bending device, aiming to solve the problem that the operation is cumbersome and affects the bending efficiency when bending the front and back sides of the plate in the related technology.

[0006] The transformer shell bending device of the present invention includes a frame, a base fixedly arranged on the frame, and a pressing plate slidably arranged up and down on the frame. Placing frames that rotate around the base are arranged on both sides of the base; A transmission component connected to the placing frame is arranged on the frame. A top plate is arranged on the pressing plate. When the pressing plate moves downward to bend the plate on the base, the top plate cooperates with the transmission component to drive the placing frame to synchronously rotate from the horizontal state to the inclined state; A placement groove runs through the upper and lower parts of the placement frame. An adjustment component is arranged on the frame, and a positioning rod is arranged on the adjustment component. The adjustment component is used to drive the positioning rod to move up and down and back and forth in the placement groove. The sheet material passes through the two placement frames to move the front and back sides to be bent of the sheet material to the base respectively. The positioning rod corresponding to the side to be bent of the sheet material moves up to the outside of the placement groove, and the positioning rod abuts against the sheet material for positioning. When changing the bent side, the extended positioning rod moves down to reset, and the other positioning rod moves up to position the bent part of the other side of the sheet material.

[0007] The effect is that initially, both placement frames are in a horizontal state. Place the sheet material on one of the placement frames. After the adjustment component adjusts the position of the positioning rod on the other placement frame according to the bending position, drive the positioning rod to move to the outside of the placement groove, push the sheet material to push the front edge of the sheet material to the base. At the same time, the front edge enters the other placement frame and abuts against the positioning rod outside the placement groove to position the sheet material. The pressing plate moves down to press the sheet material for bending. At the same time, the top plate cooperates with the transmission component to drive the two placement frames to rotate synchronously. After bending the front edge, the extended positioning rod retracts, pushes the sheet material to another sheet material, and moves the other positioning rod out of the placement groove to fix the rear edge of the sheet material. Repeat the above operations to bend the sheet material again. Through the two placement frames and the positioning rod, the front and back edges of the sheet material can be bent and positioned by moving the sheet material back and forth, improving the bending efficiency of the sheet material.

[0008] Preferably, the transmission component includes a first gear, a second gear, an intermediate member, and a connecting plate. The first gear and the second gear are both rotatably assembled on the frame. The first gear and the second gear are arranged as bevel gears. There are two second gears corresponding to the two placement frames. The axis of the second gear is on the same straight line as the base. The first gear is arranged between the two second gears and meshes with the second gear. The connecting plate is arranged on the side of the second gear, and the placement frame is connected to the connecting plate. The intermediate member is arranged on the frame, and the intermediate member cooperates with the first gear. The top plate drives the first gear to rotate through the intermediate member.

[0009] The effect is that the top plate cooperates with the intermediate member. The intermediate member drives the first gear to rotate. The first gear drives the two placement frames to rotate synchronously through the second gear, making the sheet material in an inclined state, and the inclination angle of the sheet material corresponds to the bending angle, improving the bending effect of the sheet material.

[0010] Preferably, the intermediate member includes a slider, a slide rod, and an intermediate gear. An oil cavity is opened in the frame, and the oil cavity is filled with hydraulic oil. The slider and the slide rod are both slidably assembled up and down on the frame, and their lower ends both extend into the oil cavity. The slider is arranged below the top plate. The intermediate gear is coaxially connected to the first gear. Tooth grooves meshing with the intermediate gear are opened up and down on the side of the slide rod. The slider moves down to push the slide rod to move up through the hydraulic oil.

[0011] The effect is that when the top plate abuts against the slider and the pressing plate presses the plate, the slider is driven to move downward, and the slider drives the sliding rod to move upward through the hydraulic oil. The movement of the sliding rod drives the first gear to rotate through the tooth groove and the intermediate gear.

[0012] Preferably, the cross-section of the slider is larger than that of the sliding rod.

[0013] The effect is that when the pressing plate presses and bends the plate, the moving distance of the sliding rod is much larger than that of the slider, so that the placing frame can rotate synchronously to correspond to the bending angle of the plate.

[0014] Preferably, an elastic telescopic rod is arranged on the frame. The elastic telescopic rod is arranged on one side of the sliding rod and is connected to the upper end of the sliding rod. The elastic telescopic rod is used to drive the sliding rod to move downward.

[0015] The effect is that after the pressing plate is separated from the plate, the elastic telescopic rod drives the sliding rod to move to the initial position. The downward movement of the sliding rod reversely pushes the slider upward and at the same time drives the placing frame to rotate back to the horizontal position.

[0016] Preferably, an installation plate is arranged on the frame. An installation groove is formed in the installation plate. The adjusting assembly includes a first driving member, a first lead screw, and a connecting portion. The first lead screw is rotatably assembled in the installation groove. The connecting portion is slidably assembled in the installation groove in the front and rear directions. The first lead screw is in threaded cooperation with the connecting portion. The connecting portion is connected to the positioning rod. The first driving member is arranged on the installation plate, and the output end of the first driving member is connected to the first lead screw to drive the first lead screw to rotate.

[0017] The effect is that the first driving member drives the first lead screw to rotate. The first lead screw drives the connecting portion to move in the installation groove. The connecting portion drives the positioning rod to move, thereby adjusting the position in the front and rear directions of the positioning.

[0018] Preferably, the connecting portion includes a connecting block in threaded cooperation with the first lead screw and a pushing member arranged on the connecting block. The output end of the pushing member is connected to the positioning rod to drive the positioning rod to move up and down.

[0019] The effect is that the pushing member drives the positioning rod to move upward and drives the positioning rod to move outside the placing groove so as to position the plate.

[0020] Preferably, the placing frame includes two placing rods. The placing rods are arranged at intervals along the length direction of the base. The placing rods are slidably matched with the connecting plate.

[0021] The effect is that the placing rods slide relative to the connecting plate to adjust the distance between the two placing rods, so as to place plates of different sizes and specifications on the placing rods.

[0022] Preferably, there are two sets of mounting plates and adjusting components. The two mounting plates correspond to the two placing rods one by one. The mounting plates are slidably arranged on the frame. The sliding direction of the mounting plates is the same as that of the placing rods. A control member is arranged on the frame. The control member is connected to the mounting plates for adjusting the positions of the mounting plates.

[0023] The effect is that while the placing rod moves, the mounting plate moves synchronously on the frame, so that the positioning rod is always in the placing groove.

[0024] Preferably, the control member includes a second driving member and a second lead screw. The second lead screw is rotatably arranged on the frame. The lead screw is arranged along the sliding direction of the mounting plate. The second driving member is arranged on the frame. The output end of the second driving member is connected to the second lead screw. Two thread grooves with opposite thread directions are respectively opened on the second lead screw corresponding to the two mounting plates. The second lead screw is in threaded cooperation with the mounting plates.

[0025] The effect is that the second driving member drives the second lead screw to rotate. The rotation of the second lead screw drives the two mounting plates to move in opposite directions, and at the same time, the position of the positioning rod is adjusted through the positioning rod in the placing groove.

[0026] Beneficial effects: In the present invention, placing frames are arranged on both sides of the base, and positioning rods are respectively arranged on the placing frames. The plate moves back and forth on the placing frame, so that the front or rear edge of the plate moves to the base. At the same time, the plate is assisted in positioning through the positioning rod, so as to quickly change the bending edge and improve the processing efficiency of the plate. Description of the drawings

[0027] Figure 1 is the overall structural schematic diagram of the embodiment of the present invention.

[0028] Figure 2 is the structural schematic diagram of the placing frame in the embodiment of the present invention.

[0029] Figure 3 is Figure 2 the structural schematic diagram of the part at A in

[0030] Figure 4 is the structural schematic diagram of the adjusting component in the embodiment of the present invention.

[0031] Figure 5 is the state schematic diagram of one of the positioning rods protruding from the placing groove and abutting against the plate for positioning in the embodiment of the present invention.

[0032] Figure 6 is the state schematic diagram of the placing frame rotating to an inclined state in the embodiment of the present invention.

[0033] Figure 7 is the structural schematic diagram of the intermediate part in the embodiment of the present invention.

[0034] Figure 8 This is a schematic structural diagram of the elastic telescopic rod in the embodiment of the present invention.

[0035] Reference numerals: 01, plate; 1, frame; 11, base; 12, pressing plate; 121, top plate; 13, control member; 131, second driving member; 132, second lead screw; 2, placement frame; 21, placement rod; 3, transmission assembly; 31, first gear; 32, second gear; 33, intermediate member; 331, slider; 332, slide bar; 333, intermediate gear; 34, connecting plate; 4, positioning rod; 5, adjustment assembly; 51, first driving member; 52, first lead screw; 53, connecting portion; 531, connecting block; 532, pushing member; 6, placement groove; 7, oil chamber; 8, elastic telescopic rod; 9, mounting plate; 91, mounting groove. Specific embodiments

[0036] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0037] As Figures 1 to 8 shown, the transformer housing bending device of the present invention includes a frame 1, on which a base 11, a pressing plate 12, a placement frame 2, a transmission assembly 3, a positioning rod 4, and an adjustment assembly 5 are provided. The base 11 is fixedly provided on the frame 1, the pressing plate 12 is slidably assembled up and down on the frame 1, the pressing plate 12 is arranged above the base 11, a bending groove for cooperating with the pressing plate 12 for bending is formed on the base 11, two placement frames 2 are provided on both sides of the base 11, and the placement frame 2 is rotatably arranged around the base 11. The transmission assembly 3 is arranged on the frame 1, the transmission assembly 3 is connected to the placement frame 2, a top plate 121 is arranged below the pressing plate 12, the top plate 121 corresponds to the transmission assembly 3, the adjustment assembly 5 is arranged on the frame 1, the positioning rod 4 is arranged on the adjustment assembly 5, a placement groove 6 is vertically penetrated through the placement frame 2, the positioning rod 4 is located in the placement groove 6, and the adjustment assembly 5 is used to drive the positioning rod 4 to move up and down and back and forth in the placement groove 6.

[0038] In the initial state, both placement frames 2 are in a horizontal state. The plate 01 to be bent for manufacturing the transformer housing is placed between the base 11 and the pressing plate 12 through the placement frame 2, and by pushing the plate 01 back and forth, the two sides to be bent of the plate 01 can be respectively moved to the position of the base 11.

[0039] Refer to Figure 5 、 Figure 6, during processing, first move the front edge of the sheet 01 to the base 11. At the same time, move the front edge of the sheet 01 to another placement frame 2. The adjustment assembly 5 drives the positioning rod 4 corresponding to the front edge of the sheet 01 to move upward, so that the positioning rod 4 moves outside the placement groove 6. Move the sheet 01 so that its front edge abuts against the positioning rod 4 to position the sheet 01. The pressing plate 12 moves downward to bend the front edge of the sheet 01. At the same time, it drives the top plate 121 to cooperate with the transmission assembly 3. While bending, the transmission assembly 3 drives the placement frame 2 to rotate accordingly. The placement frame 2 drives the sheet 01 to rotate to an inclined state, so that the rotation amplitude of the sheet 01 corresponds to the bending angle to improve the bending effect.

[0040] After bending the front edge of the sheet 01, change the bending edge. The adjustment assembly 5 drives the extended positioning rod 4 to move downward and reset. Then push the sheet 01 until the rear edge of the sheet 01 moves to the base 11. At this time, move another positioning rod 4 outside the placement groove 6, and then move the sheet 01 so that the rear edge of the sheet 01 abuts against the extended positioning rod 4 to position the sheet 01 again. Repeat the above operation to bend the rear edge of the sheet 01.

[0041] During bending, through the two placement frames 2, when bending the front and rear edges of the sheet 01, only need to push the sheet 01 between the two placement frames 2. At the same time, the sheet 01 is positioned by the positioning rod 4, and the placement frame 2 rotates accordingly during bending, improving the bending efficiency and bending accuracy of the sheet 01.

[0042] Refer to Figure 2 、 Figure 3 、 Figure 7 , the transmission assembly 3 includes: a first gear 31 and a second gear 32 rotatably assembled on the frame 1, an intermediate member 33, and a connecting plate 34. Both the first gear 31 and the second gear 32 are bevel gears. There are two second gears 32 corresponding to the two placement frames 2. The connecting plate 34 is connected to the side of the second gear 32. The placement frame 2 is connected to the connecting plate 34. The axis of the second gear 32 is on the same straight line as the base 11, so that when the second gear 32 rotates, it can drive the placement frame 2 to rotate around the base 11, that is, the placement frame 2 rotates around the crease during bending. The first gear 31 is arranged between the two second gears 32 and meshes with the two second gears 32. The intermediate member 33 cooperates with the first gear 31, and the intermediate member 33 corresponds to the top plate 121.

[0043] When the pressing plate 12 moves downward, it drives the top plate 121 to cooperate with the intermediate member 33. The intermediate member 33 drives the first gear 31 to rotate. When the first gear 31 rotates, it drives the two second gears 32 to rotate, and then drives the two placement frames 2 to rotate simultaneously.

[0044] Refer to Figure 3 、 Figure 4 、 Figure 7, the middleware 33 includes: a slider 331 and a slide bar 332 that are slidably assembled up and down on the frame 1, and an intermediate gear 333 coaxially connected to the first gear 31. The slider 331 and the slide bar 332 are arranged at intervals. An oil cavity 7 filled with hydraulic oil is provided in the frame 1. The oil cavity 7 is arranged below the slider 331 and the slide bar 332. The lower parts of the slider 331 and the slide bar 332 extend into the oil cavity 7. The slider 331 and the top plate 121 are arranged in the same vertical direction, and the slider 331 is arranged below the top plate 121. The slide bar 332 is arranged on one side of the intermediate gear 333. A tooth groove meshing with the intermediate gear 333 is provided on the side surface of the slide bar 332. The tooth groove is arranged along the sliding direction of the slide bar 332.

[0045] When the pressing plate 12 moves downward, it drives the top plate 121 to cooperate with the slider 331 and drives the slider 331 to move downward. The slider 331 pushes the slide bar 332 to move upward through the hydraulic oil. The movement of the slide bar 332 drives the intermediate gear 333 and the first gear 31 to rotate through the tooth groove, and then drives the second gear 32 to rotate accordingly.

[0046] Refer to Figure 7 , Figure 8 , an elastic telescopic rod 8 is provided on the frame 1. The elastic telescopic rod 8 is arranged on the side surface of the slide bar 332. The elastic telescopic rod 8 is arranged along the sliding direction of the slide bar 332, and the upper end of the elastic telescopic rod 8 is connected to the slide bar 332. The elastic telescopic rod 8 is used to drive the slide bar 332 to move downward. When the slider 331 drives the slide bar 332 to move upward, the slide bar 332 moves upward and the elastic telescopic rod 8 is stretched accordingly. After the bending is completed, the elastic telescopic rod 8 drives the slide bar 332 to move downward to the initial position, and then drives the placement frame 2 to rotate to the horizontal state again, so as to adjust the placement of the plate 01.

[0047] Refer to Figure 7 , the cross-section of the slider 331 is larger than the cross-section of the slide bar 332, so that the upward movement distance of the slide bar 332 is much larger than the downward movement distance of the slider 331.

[0048] When the pressing plate 12 contacts the plate 01, the top plate 121 abuts against the slider 331, that is, when bending, the placement frame 2 rotates accordingly. By setting the different cross-sections of the slider 331 and the slide bar 332, when the pressing plate 12 presses and bends the plate 01, it can drive the slide bar 332 to move upward a large distance, so that the placement frame 2 can rotate to the corresponding angle with the bending angle.

[0049] Refer to Figure 1 , Figure 2 , Figure 4, the adjusting assembly 5 includes a first driving member 51, a first lead screw 52, and a connecting portion 53. An installation plate 9 is provided on the frame 1, and an installation groove 91 is formed in the installation plate 9. The first lead screw 52 is rotatably arranged in the installation groove 91 and is arranged in the direction towards the other placement frame 2. The connecting portion 53 is slidably assembled in the installation groove 91 in the front-back direction. The first lead screw 52 cooperates with the connecting portion 53. The first driving member 51 is set as a motor, and the output end of the first driving member 51 is connected to the first lead screw 52. The positioning rod 4 is connected to the connecting portion 53.

[0050] The first driving member 51 drives the connecting portion 53 to move in the installation groove 91 through the first lead screw 52, and then drives the positioning rod 4 to move. According to the crease position of the sheet 01, the position of the positioning rod 4 in the front-back direction is adjusted.

[0051] Refer to Figure 4 、 Figure 5 , the connecting portion 53 includes a connecting block 531 and a pushing member 532. The connecting block 531 is slidably assembled in the installation groove 91 in the front-back direction. The first lead screw 52 penetrates through the connecting block 531 and is in threaded cooperation with the connecting block 531. The pushing member 532 is arranged on the connecting block 531, and the output end of the pushing member 532 is connected to the positioning rod 4. The pushing member 532 is set as a cylinder. While the first lead screw 52 drives the positioning rod 4 to move back and forth through the connecting block 531 and the pushing member 532, the pushing member 532 can drive the positioning rod 4 to move up and down to adjust the position of the positioning rod 4 in the up-down direction.

[0052] Each placement frame 2 includes two placement rods 21. The two placement rods 21 are arranged at intervals along the length direction of the base 11. The placement rods 21 are slidably matched with the connecting plate 34. The distance between the two placement rods 21 can be adjusted by sliding the placement rods 21 to place sheets 01 of different specifications.

[0053] Refer to Figure 2 、 Figure 4 , there are two sets of installation plates 9 and adjusting assemblies 5. The two sets of installation plates 9 and the two placement rods 21 are arranged in one-to-one correspondence, that is, a set of installation plate 9 and adjusting assembly 5 is provided at each placement rod 21. The installation plate 9 is slidably arranged on the frame 1, and the sliding direction of the installation plate 9 is the same as the sliding direction of the placement rod 21. While moving the placement rod 21, the positions of the installation plate 9 and the adjusting assembly 5 are adjusted so that the positioning rod 4 is in the positioning groove for subsequent positioning.

[0054] Refer to Figure 1 、 Figure 4, a control member 13 is provided on the frame 1. The control member 13 includes a second driving member 131 and a second lead screw 132. The second driving member 131 is set as a motor, the output end of the second driving member 131 is connected to the second lead screw 132, two threads in opposite directions are provided on the second lead screw 132, and the two ends of the threads are respectively matched with two mounting plates 9, and the second lead screw 132 is in threaded engagement with the mounting plate 9.

[0055] The second driving member 131 drives the second lead screw 132 to rotate. The rotation of the second lead screw 132 drives the two mounting plates 9 to move synchronously in opposite directions. The mounting plate 9 drives the placing rod 21 to move through the positioning rod 4, thereby realizing the adjustment of the positions of the positioning rod 4 and the placing rod 21 at the same time.

[0056] The implementation principle of the present invention is as follows: when processing the plate 01, the front and rear edges of the plate 01 are bent successively. The plate 01 is placed on the placing frame 2. At this time, the pushing member 532 drives the positioning rod 4 on the other placing frame 2 to move outside the placing groove 6, and pushes the plate 01, so that the front edge of the plate 01 moves to the base 11. At the same time, the front edge of the plate 01 moves to abut against the positioning rod 4 that has moved outside the placing groove 6, and the front edge of the plate 01 is positioned. When the pressing plate 12 moves down to abut against the plate 01, the top plate 121 abuts against the slider 331 at the same time. The pressing plate 12 continues to move down to bend the plate 01. At the same time, the slider 331 drives the placing frame 2 to rotate synchronously through the sliding rod 332, the first gear 31 and the second gear 32, and cooperates with the pressing plate 12 to bend the plate 01. After the bending is completed, the pressing plate 12 moves up and separates from the plate 01. The elastic telescopic rod 8 drives the sliding rod 332 and the slider 331 to move to the initial position, and at the same time drives the placing frame 2 to rotate back to the horizontal state. Lower the protruding positioning rod 4 to reset, push the plate 01 towards the other placing frame 2 until the rear edge of the plate 01 moves to the base 11, then move another positioning rod 4 outside the placing groove 6, and move the plate 01 again so that the rear edge of the plate 01 abuts against the protruding positioning rod 4 for positioning. Repeat the above operation to bend the rear edge of the plate 01.

[0057] By providing two placing frames 2 and respectively providing positioning rods 4 on the placing frames 2, when processing the plate 01, the front and rear edges of the plate 01 are respectively positioned by the positioning rods 4. When it is necessary to change the bending edge, only need to push the plate 01 to the other placing frame 2, and at the same time the positioning rod 4 assists in positioning, improving the bending efficiency of the plate 01.

[0058] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A transformer housing bending device, comprising a frame (1), a base (11) fixedly arranged on the frame (1), and a pressing plate (12) slidably arranged on the frame (1), characterized in that: A placement frame (2) is provided on both sides of the base (11) and is rotatable around the base (11); A transmission assembly (3) connected to the placement frame (2) is provided on the frame (1), and a top plate (121) is provided on the pressing plate (12). When the pressing plate (12) moves downward to bend the plate (01) on the base (11), the top plate (121) cooperates with the transmission assembly (3) to drive the placement frame (2) to rotate synchronously from a horizontal state to an inclined state. A placement slot (6) is provided in the placement frame (2) extending vertically therethrough. The frame (1) is provided with an adjustment assembly (5). A positioning rod (4) is provided on the adjustment assembly (5). The adjustment assembly (5) is used to drive the positioning rod (4) to move vertically and forwardly and backwardly in the placement slot (6). The plate (01) passes through the two placement frames (2) so that the front and rear sides of the plate (01) to be bent are respectively moved to the base (11). The positioning rod (4) corresponding to the side of the plate (01) to be bent is moved upward to the outside of the placement slot (6). The positioning rod (4) abuts against the plate (01) for positioning. When the bending side is replaced, the extended positioning rod (4) is moved downward to reset, and the other positioning rod (4) is moved upward to position the bending portion of the other side of the plate (01).

2. The transformer housing bending device according to claim 1, characterized in that: The transmission assembly (3) comprises a gear 1 (31), a gear 2 (32), an intermediate piece (33), and a connecting plate (34). The gear 1 (31) and the gear 2 (32) are both rotatably mounted on the frame (1). The gear 1 (31) and the gear 2 (32) are configured as bevel gears. Two gear 2 (32) are provided corresponding to the two placement frames (2). The axis of the gear 2 (32) and the base (11) are located on the same straight line. The gear 1 (31) is provided between the two gear 2 (32) and meshes with the gear 2 (32). The connecting plate (34) is provided on the side of the gear 2 (32). The placement frame (2) is connected to the connecting plate (34). The intermediate piece (33) is provided on the frame (1). The intermediate piece (33) cooperates with the gear 1 (31). The top plate (121) drives the gear 1 (31) to rotate through the intermediate piece (33).

3. The transformer housing bending device according to claim 2, characterized in that: The middle piece (33) comprises: a slider (331), a slide bar (332), and an intermediate gear (333). An oil chamber (7) is provided in the frame (1), and the oil chamber (7) is filled with hydraulic oil. The slider (331) and the slide bar (332) are both slidably mounted on the frame (1) and their lower ends extend into the oil chamber (7). The slider (331) is arranged below the top plate (121). The intermediate gear (333) is coaxially connected to the first gear (31). Tooth grooves meshing with the intermediate gear (333) are provided on the upper and lower sides of the slide bar (332). When the slider (331) moves downward, the hydraulic oil pushes the slide bar (332) upward.

4. The transformer housing bending device according to claim 3, characterized in that: The cross section of the sliding block (331) is larger than the cross section of the sliding rod (332).

5. The transformer housing bending device according to claim 3, characterized in that: An elastic telescopic rod (8) is arranged on the frame (1), the elastic telescopic rod (8) is arranged on one side of the sliding rod (332), the elastic telescopic rod (8) is connected to the upper end of the sliding rod (332), and the elastic telescopic rod (8) is used to drive the sliding rod (332) to move downward.

6. The transformer housing bending device according to claim 2, characterized in that: A mounting plate (9) is provided on the frame (1), and a mounting groove (91) is provided on the mounting plate (9). The adjustment assembly (5) comprises a driving member (51), a lead screw (52), and a connecting portion (53). The lead screw (52) is rotatably mounted in the mounting groove (91), and the connecting portion (53) is slidably mounted in the mounting groove (91) forward and backward. The lead screw (52) and the connecting portion (53) are threadedly engaged, and the connecting portion (53) is connected to the positioning rod (4). The driving member (51) is provided on the mounting plate (9), and an output end of the driving member (51) is connected to the lead screw (52) to drive the lead screw (52) to rotate.

7. The transformer housing bending device according to claim 6, characterized in that: The connecting portion (53) comprises a connecting block (531) threadedly matched with the lead screw (52) and a pushing piece (532) arranged on the connecting block (531); the output end of the pushing piece (532) is connected to the positioning rod (4) to drive the positioning rod (4) to move up and down.

8. The transformer housing bending device according to claim 6, characterized in that: The placement frame (2) comprises two placement rods (21), the placement rods (21) are arranged at intervals along the length direction of the base (11), and the placement rods (21) are slidably matched with the connecting plate (34).

9. The transformer housing bending device according to claim 8, characterized in that: The mounting plate (9) and the adjustment assembly (5) are both provided in two groups, the two groups of mounting plates (9) correspond to the two placement rods (21) one by one, the mounting plate (9) is slidably arranged on the frame (1), the mounting plate (9) and the placement rod (21) have the same sliding direction, and the frame (1) is provided with a control member (13), which is connected to the mounting plate (9) and is used to adjust the position of the mounting plate (9).

10. The transformer housing bending device according to claim 3, characterized in that: The control member (13) comprises a second driving member (131) and a second lead screw (132). The second lead screw (132) is rotatably arranged on the frame (1). The lead screw is arranged along the sliding direction of the mounting plate (9). The second driving member (131) is arranged on the frame (1). The output end of the second driving member (131) is connected to the second lead screw (132). Two thread grooves with opposite thread directions are formed on the second lead screw (132) corresponding to the two mounting plates (9). The second lead screw (132) is threadably matched with the mounting plate (9).

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