Equipment and method for bending primary lead aluminum pipe of mutual inductor

Abstract

The invention relates to mutual inductor primary wire aluminum pipe bending equipment and method.A primary forming mechanism is provided with a lifting support and a first top plate, a main oil cylinder and two auxiliary oil cylinders which are arranged in a Y shape are arranged between the lifting support and the first top plate, a primary forming pressing head is arranged at the front end of the main oil cylinder, and primary forming pressing wheels are arranged at the front ends of the auxiliary oil cylinders; a first conveying roller is arranged on the upper side of the lifting support, a second conveying roller is arranged on the upper side of the first top plate, the secondary forming mechanism is provided with a fixing support and a second top plate, a third conveying roller is arranged on the fixing support, extrusion oil cylinders are arranged between the fixing support and the second top plate in a bilateral symmetry mode, and secondary forming pressing wheels are arranged at the head ends of the extrusion oil cylinders. A detachable supporting seat is arranged on one side of the fixing support, a turnover baffle is arranged on the other side of the fixing support, and a position-adjustable forming limiting seat is arranged in the middle of the fixing support. The U-shaped and waist-drum-shaped forming operation of the aluminum pipe can be completed at a time, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of mutual inductor production, in particular to a mutual inductor primary conductor aluminum tube bending device and method. Background Art

[0002] The existing current transformer usually bends the primary conductor aluminum tube into a "waist drum" shape, which is alternately wrapped with multiple layers of cable paper and aluminum foil screens, and then placed in a porcelain sleeve. However, the primary conductor aluminum tube equipment in the prior art needs to first manually bend the aluminum tube into a U shape, and then use special equipment to bend the U-shaped aluminum tube into the required "waist drum" shape. For example, the CN202933989U patent discloses a high-voltage transformer primary conductor aluminum tube forming equipment. When working, the pre-made U-shaped workpiece needs to be placed on a positioning roller and a limit block, and then the wheel frame pushes the roller to reciprocate under the action of the screw rod to bend the U-shaped workpiece into a "waist drum" shape. The device divides the U-shape and "waist drum" shapes of the aluminum tube into two processes for processing, and it needs to be transported by manpower or overhead cranes and other equipment in the middle, so the production efficiency needs to be improved.

[0003] The CN202316711U patent discloses a waist forming device for the primary conductor aluminum tube of a high-voltage transformer. When working, the middle part of the primary conductor aluminum tube is fixed by left and right clamps, and the part below the workbench is fixed by upper and lower clamps. Then the part to be bent is placed in the upper mold, and the lower mold is squeezed upward by the hydraulic rod of the hydraulic cylinder. Since the curve formed by the grooves in the upper and lower molds is the shape to be formed by the waist of the aluminum tube, the shape of the waist of the aluminum tube after extrusion is the required shape. However, the device can only use the upper and lower molds to complete the forming and extrusion of one side of the U-shaped aluminum tube at a time. In fact, the U-shape and "waist drum" shape of the aluminum tube are divided into two processes. Summary of the invention

[0004] The object of the present invention is to provide a transformer primary conductor aluminum tube bending device and method, which can complete the U-shaped and "waist drum"-shaped forming operations of the aluminum tube at one time, thereby improving production efficiency.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A transformer primary conductor aluminum tube bending equipment comprises a primary forming mechanism and a secondary forming mechanism arranged in sequence, wherein the primary forming mechanism is provided with a lifting bracket, and a first top plate is provided on the upper side of the lifting bracket, a main oil cylinder and two auxiliary oil cylinders arranged in a Y shape are provided between the lifting bracket and the first top plate, wherein a primary forming pressure head is provided at the front end of the main oil cylinder, a primary forming pressure wheel is provided at the front end of the auxiliary oil cylinder, a first transmission roller is provided on the upper side of the lifting bracket, a second transmission roller is provided on the upper side of the first top plate, the secondary forming mechanism is provided with a fixed bracket, and a third transmission roller is provided on the fixed bracket, a second top plate is provided on the upper side of the fixed bracket, and an extrusion oil cylinder arranged symmetrically between the fixed bracket and the second top plate, a secondary forming pressure wheel is provided at the head end of the extrusion oil cylinder, a detachable support seat is provided on one side of the fixed bracket close to the primary forming mechanism, and a flippable baffle is provided on the other side, and a forming limit seat with limit blocks on both sides and adjustable position is provided in the middle of the fixed bracket.

[0007] A main cylinder hinge shaft is provided on one side away from the secondary molding mechanism between the lifting bracket and the first top plate, and a secondary cylinder hinge shaft is provided on the other side. The rear end of the main cylinder is hinged to the main cylinder hinge shaft, and the rear end of the secondary cylinder is hinged to the corresponding secondary cylinder hinge shaft.

[0008] The lifting bracket is provided with a pressure head slide groove, the one-time forming pressure head is arranged on a pressure head slide seat, and a sliding block is provided on the lower side of the pressure head slide seat to cooperate with the pressure head slide groove.

[0009] A lifting mechanism is arranged at the lower side of the lifting bracket.

[0010] The support seat comprises support blocks on both sides, and the upper ends of the support blocks are provided with limiting end surfaces that abut against the aluminum tube.

[0011] The fixing bracket is provided with a pin hole, and the lower side of the supporting seat is provided with a latch pin which is inserted into the corresponding pin hole.

[0012] The formed limit seat includes a limit block, an adjustment slide and a locking bolt, wherein an adjustment slot is provided in the middle of the fixed bracket, the adjustment slide is arranged in the adjustment slot and is locked in position by a locking bolt, two limit blocks are arranged on both sides of the adjustment slide, and the limit block is provided with an arc surface that abuts against the aluminum tube.

[0013] The adjusting slide seat comprises an upper seat body and a lower seat body connected by locking bolts, and the upper seat body and the lower seat body respectively clamp the edges of the adjusting slide groove on both sides, and the limit block is arranged on the upper seat body.

[0014] The lower end of the baffle is hinged to a baffle seat arranged on a fixed bracket through a baffle hinge shaft, and a positioning pin is provided at the lower end of the baffle and inserted into a positioning pin hole arranged on the baffle seat.

[0015] A control method for the transformer primary conductor aluminum tube bending device comprises the following steps:

[0016] Step 1: The primary molding mechanism rises to the same height as the secondary molding mechanism, and then the aluminum tube is inserted between the primary molding press head and the primary molding press wheel;

[0017] Step 2: The main oil cylinder and the auxiliary oil cylinder in the primary forming mechanism are started, and the aluminum tube is bent into a U shape under the action of the primary forming pressure head and the primary forming pressure wheel;

[0018] Step 3: Pull out the support seat on one side of the secondary molding mechanism, and flatten the baffle plate on the other side of the secondary molding mechanism, and then transfer the U-shaped aluminum tube from the primary molding mechanism to the secondary molding mechanism along the first transmission roller and the third transmission roller;

[0019] Step 4: The primary forming mechanism is lowered to a position where the second conveying roller and the third conveying roller have the same height;

[0020] Step 5: Install the support seat back to its original position, and stand up the baffle, then move the aluminum tube in the opposite direction along the third transmission roller and the second transmission roller to tighten, at which time the arc-shaped part in the middle of the aluminum tube is blocked and limited by the baffle;

[0021] Step 6: Adjust the position of the forming limit seat so that the limit blocks on both sides are aligned with the first bending portion of the aluminum tube;

[0022] Step 7: The extrusion cylinders of the secondary molding mechanism are started to extrude the aluminum tube into a waist drum shape.

[0023] The advantages and positive effects of the present invention are:

[0024] 1. The present invention utilizes a primary forming mechanism to first complete the U-shaped forming of the aluminum tube, and then transfers the aluminum tube to a secondary forming mechanism. The coordinated descent of the primary forming mechanism will not affect the tensioning of the U-shaped aluminum tube during secondary forming. Finally, the "waist drum" shape forming operation of the aluminum tube is completed on the secondary forming mechanism, thereby being able to complete the U-shaped and "waist drum" shape forming of the aluminum tube at one time, thereby improving production efficiency.

[0025] 2. The present invention utilizes a support seat of the secondary molding mechanism close to the primary molding mechanism to limit the position of the straight tube portion of the aluminum tube during secondary molding, while the baffle on the other side limits the displacement of the middle arc portion of the U-shaped aluminum tube to achieve tensioning, and the support seat can be pulled out, and the baffle can be rotated and laid flat, thereby not affecting the transfer of the aluminum tube from the primary molding mechanism to the secondary molding mechanism.

[0026] 3. The present invention utilizes a forming limit seat in the middle of the secondary molding mechanism to limit the position of the first bending portion during secondary molding of the aluminum tube, and the forming limit seat can be moved and adjusted according to the design of the first bending portion, which improves the flexibility and scope of application of the present invention.

[0027] 4. The present invention can integrate the primary molding mechanism, the secondary molding mechanism, the control system, etc. on one frame, and the overall structure is compact and easy to transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a top view of the present invention,

[0029] Figure 2 is the front view of the present invention,

[0030] Figure 3 This is a schematic diagram of the state of the present invention during secondary molding,

[0031] Figure 4 for Figure 3 The schematic diagram of the aluminum tube state during secondary molding of the present invention is shown in FIG.

[0032] Figure 5 for Figure 1 Schematic diagram of baffle installation.

[0033] Among them, 1 is a primary molding mechanism, 101 is a lifting bracket, 1011 is a first transmission roller, 102 is a first top plate, 1021 is a second transmission roller, 103 is a main oil cylinder, 1031 is a main oil cylinder hinge shaft, 104 is a primary molding pressure head, 1041 is a pressure head slide, 105 is a secondary oil cylinder, 1051 is a secondary oil cylinder hinge shaft, 106 is a primary molding pressure wheel, 107 is a lifting mechanism, 1071 is a lifting scissor rod, 1072 is a lifting cylinder, 2 is a secondary molding mechanism, 201 is a fixed bracket, 2011 is a third transmission roller, 2012 is an adjustment slide, 2 02 is the second top plate, 203 is the extrusion cylinder, 2031 is the extrusion cylinder hinge shaft, 204 is the secondary molding pressure wheel, 205 is the support seat, 2051 is the limit end face, 2052 is the support block, 206 is the molding limit seat, 2061 is the limit block, 2062 is the adjustment slide seat, 2063 is the locking bolt, 207 is the baffle, 2071 is the baffle seat, 2072 is the positioning pin, 2073 is the baffle hinge shaft, 3 is the frame, 301 is the base frame, 4 is the aluminum tube, 401 is the first bending part, 402 is the second bending part, 403 is the straight tube part, and 5 is the control system. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] like Figures 1 to 5As shown, the present invention comprises a primary molding mechanism 1 and a secondary molding mechanism 2 arranged in sequence, wherein the primary molding mechanism 1 is provided with a lifting bracket 101, and a first top plate 102 is provided on the upper side of the lifting bracket 101, a main oil cylinder 103 and two auxiliary oil cylinders 105 arranged in a Y shape are provided between the lifting bracket 101 and the first top plate 102, wherein a primary molding pressure head 104 is provided at the front end of the main oil cylinder 103, an angle α is formed between the auxiliary oil cylinder 105 and the main oil cylinder 103, and a primary molding pressure wheel 106 is provided at the front end of the auxiliary oil cylinder 105, a first transmission roller 1011 is provided on the upper side of the lifting bracket 101, and a second transmission roller 1011 is provided on the upper side of the first top plate 102 The secondary molding mechanism 2 is provided with a fixed bracket 201, and a third transmission roller 2011 is provided on the fixed bracket 201. A second top plate 202 is provided on the upper side of the fixed bracket 201, and an extrusion cylinder 203 symmetrically arranged along the central axis of the mechanism is provided between the fixed bracket 201 and the second top plate 202. A secondary molding pressure wheel 204 is provided at the head end of the extrusion cylinder 203. A detachable support seat 205 is provided on one side of the fixed bracket 201 close to the primary molding mechanism 1, and a reversible baffle 207 is provided on the other side. A molding limit seat 206 with limit blocks 2061 on both sides and adjustable position is provided in the middle of the fixed bracket 201.

[0036] When the present invention works, Figure 2 As shown, the primary forming mechanism 1 and the secondary forming mechanism 2 are at the same height first, and the aluminum tube 4 to be processed is inserted into place between the primary forming ram 104 and the primary forming roller 106, and then the main oil cylinder 103 is started to drive the primary forming ram 104 to move forward, and the auxiliary oil cylinder 105 drives the primary forming roller 106 to move forward. The aluminum tube 4 is bent into a U shape under the action of the primary forming ram 104 and the primary forming roller 106, and then the primary forming ram 104 and the primary forming roller 106 are restored to their original positions, and then the support seat 205 is pulled out and the baffle 207 is laid flat, so that the U-shaped aluminum tube 4 can be moved along the first transmission roller 1011 and the third transmission roller 2011 to the secondary forming mechanism 2, and at this time, each secondary forming roller 204 of the secondary forming mechanism 2 retreats to the set position, so as not to affect the movement of the U-shaped aluminum tube 4, and at the same time can also assist in limiting the U-shaped shape of the aluminum tube 4. When the aluminum tube 4 leaves the primary forming mechanism 1, the lifting bracket 101 of the primary forming mechanism 1 descends to Figure 3 The second conveying roller 1021 on the primary molding mechanism 1 is in the same height as the third conveying roller 2011 on the secondary molding mechanism 2. Then the support seat 205 is installed back to the original position, and the baffle 207 is erected. At this time, the U-shaped aluminum tube 4 can move in the opposite direction along the third conveying roller 2011 and the second conveying roller 1021 and be tightened. At this time, the arc-shaped part in the middle of the U-shaped aluminum tube 4 is limited by the baffle 207, and then as shown in FIG. Figure 4As shown, the position of the forming limit seat 206 is adjusted so that the limit blocks 2061 on both sides are aligned with the first bending portion 401 of the aluminum tube 4. Finally, each extrusion cylinder 203 of the secondary molding mechanism 2 is started to extrude the aluminum tube 4 into a "waist drum" shape, wherein the limit blocks 2061 on the forming limit seat 206 correspond to the first bending portion 401 of the aluminum tube 4, and the secondary molding pressing wheel 204 closest to the primary molding mechanism 1 corresponds to the second bending portion 402 of the aluminum tube 4. The remaining secondary molding pressing wheels 204 move at a set distance to ensure that the aluminum tube 4 forms a "waist drum" shape, and the support seat 205 limits the position of the straight tube portion 403 of the aluminum tube 4.

[0037] like Figures 1 to 4 As shown, in this embodiment, a main cylinder hinge shaft 1031 is provided on the side away from the secondary molding mechanism 2 between the lifting bracket 101 and the first top plate 102, and a sub-cylinder hinge shaft 1051 is provided on the other side. The rear end of the main cylinder 103 is hinged to the main cylinder hinge shaft 1031, and the rear end of the sub-cylinder 105 is hinged to the corresponding sub-cylinder hinge shaft 1051.

[0038] like Figure 1 As shown, the lifting bracket 101 is provided with a press head slot 1041, the one-time forming press head 104 is arranged on a press head slide seat, and a slider is provided on the lower side of the press head slide seat to cooperate with the press head slot 1041 to ensure that the one-time forming press head 104 moves smoothly and the moving direction does not deviate.

[0039] like Figure 3 As shown, a lifting mechanism 107 is provided on the lower side of the lifting bracket 101, and the lifting bracket 101 is driven to lift by the lifting mechanism 107. In this embodiment, the lifting mechanism 107 is a lifting scissors mechanism, which includes two cross-arranged lifting scissors rods 1071, and one of the lifting scissors rods 1071 is driven to swing by a lifting cylinder 1072. The lifting scissors mechanism is a well-known technology in the art.

[0040] like Figure 1 and Figure 4 As shown, in this embodiment, the support seat 205 includes support blocks 2052 on both sides, and during secondary molding, the support blocks 2052 support the straight tube parts 403 formed by bending on both sides of the aluminum tube 4, and the upper ends of the support blocks 2052 are provided with limit end faces 2051 to limit the positions of the straight tube parts 403 on both sides of the aluminum tube 4. The support seat 205 is a detachable structure. When the aluminum tube 4 is moved from the primary molding mechanism 1 to the secondary molding mechanism 2, the support seat 205 can be pulled out without blocking the movement of the aluminum tube 4. In this embodiment, the fixed bracket 201 is provided with a pin hole, and the lower side of the support seat 205 is provided with a pin inserted in the corresponding pin hole to achieve positioning. This structure also facilitates the disassembly and assembly of the support seat 205.

[0041] like Figure 1 and Figure 4 As shown, in this embodiment, the molding limit seat 206 in the middle of the secondary molding mechanism 2 includes a limit block 2061, an adjustment slide 2062 and a locking bolt 2063, wherein the middle of the fixed bracket 201 is provided with an adjustment slot 2012, the adjustment slide 2062 is arranged in the adjustment slot 2012 and is locked in position by the locking bolt 2063, two limit blocks 2061 are arranged on both sides of the adjustment slide 2062, and the limit blocks 2061 are provided with an arc surface that abuts against the aluminum tube 4. During secondary molding, the aluminum tube 4 is supported by the limit blocks 2061 and its position is limited by the arc surface. In addition, in this embodiment, the adjustment slide 2062 includes an upper seat body and a lower seat body connected by a locking bolt 2063, and the upper seat body and the lower seat body respectively clamp the edges of the adjustment slot 2012 on both sides, and the limit block 2061 is arranged on the upper seat body. When the locking bolt 2063 is loosened, the upper seat body and the lower seat body no longer clamp the edge of the adjustment slot 2012. At this time, the adjustment slide 2062 can move the adjustment position according to the design requirements of the aluminum tube 4.

[0042] like Figure 5 As shown, in this embodiment, the lower end of the baffle 207 is hinged to the baffle seat 2071 arranged on the fixed bracket 201 through the baffle hinge shaft 2073, and the lower end of the baffle 207 is provided with a positioning pin 2072 which is inserted into the positioning pin hole on the baffle seat 2071. After the positioning pin 2072 is pulled out, the baffle 207 can be laid flat. When the baffle 207 is erected, the positioning pin 2072 can be reinserted to keep the baffle 207 in an upright state.

[0043] like Figures 2-3 As shown, in this embodiment, the primary molding mechanism 1 and the secondary molding mechanism 2 are arranged on a frame 3, and the lifting mechanism 107 is arranged inside the frame 3 and the lower end is connected to the base frame 301 of the frame 3. In addition, the control system 5 can also be arranged in the frame 3.

[0044] The working principle of the present invention is:

[0045] The control method of the device of the present invention comprises the following steps:

[0046] Step 1: The primary molding mechanism 1 rises to the same height as the secondary molding mechanism 2, at which time the first transfer roller 1011 and the third transfer roller 2011 are at the same height, and then the aluminum tube 4 is inserted between the primary molding press head 104 and the primary molding press wheel 106;

[0047] Step 2: The main oil cylinder 103 and the auxiliary oil cylinder 105 in the primary forming mechanism 1 are started, and the aluminum tube 4 is bent into a U shape under the action of the primary forming pressing head 104 and the primary forming pressing wheel 106;

[0048] Step 3: The primary molding press head 104 and the primary molding press wheel 106 are restored to their original positions, and then the support seat 205 on one side of the secondary molding mechanism 2 is pulled out, and the baffle 207 on the other side of the secondary molding mechanism 2 is laid flat, and then the U-shaped aluminum tube 4 is transferred from the primary molding mechanism 1 to the secondary molding mechanism 2 along the first transmission roller 1011 and the third transmission roller 2011;

[0049] Step 4: The primary forming mechanism 1 is lowered to a position where the second transfer roller 1021 and the third transfer roller 2011 have the same height;

[0050] Step 5: Install the support seat 205 back to its original position, and stand up the baffle 207, then move the aluminum tube 4 in the opposite direction along the third transmission roller 2011 and the second transmission roller 1021 to tighten, at which time the arc-shaped part in the middle of the aluminum tube 4 is blocked and limited by the baffle 207;

[0051] Step 6: Adjust the position of the forming limit seat 206 so that the limit blocks 2061 on both sides are aligned with the first bending portion 401 of the aluminum tube 4;

[0052] Step 7: Each extrusion cylinder 203 of the secondary molding mechanism 2 is started to extrude the aluminum tube 4 into a waist drum shape.

Claims

1. A transformer primary conductor aluminum tube bending device, characterized by: The invention comprises a primary molding mechanism (1) and a secondary molding mechanism (2) arranged in sequence, wherein the primary molding mechanism (1) is provided with a lifting bracket (101), and a first top plate (102) is provided on the upper side of the lifting bracket (101), a main oil cylinder (103) and two auxiliary oil cylinders (105) arranged in a Y shape are provided between the lifting bracket (101) and the first top plate (102), wherein a primary molding pressure head (104) is provided at the front end of the main oil cylinder (103), and a primary molding pressure wheel (106) is provided at the front end of the auxiliary oil cylinder (105), a first transmission roller (1011) is provided on the upper side of the lifting bracket (101), and a second transmission roller (1021) is provided on the upper side of the first top plate (102), and the secondary molding mechanism (2) is provided with a first transmission roller (1011) and a second transmission roller (1021) is provided on the upper side of the first top plate (102), and a secondary molding mechanism (2) is provided. The mechanism (2) is provided with a fixed bracket (201), and a third transmission roller (2011) is provided on the fixed bracket (201), a second top plate (202) is provided on the upper side of the fixed bracket (201), and an extrusion oil cylinder (203) symmetrically arranged on the left and right is provided between the fixed bracket (201) and the second top plate (202), a secondary molding pressure wheel (204) is provided at the head end of the extrusion oil cylinder (203), a detachable support seat (205) is provided on one side of the fixed bracket (201) close to the primary molding mechanism (1), and a flippable baffle (207) is provided on the other side, and a molding limit seat (206) with limit blocks (2061) on both sides and adjustable in position is provided in the middle of the fixed bracket (201).

2. The transformer primary conductor aluminum tube bending equipment according to claim 1 is characterized in that: A main oil cylinder hinge shaft (1031) is provided on one side away from the secondary molding mechanism (2) between the lifting bracket (101) and the first top plate (102), and a secondary oil cylinder hinge shaft (1051) is provided on the other side; a rear end of the main oil cylinder (103) is hinged on the main oil cylinder hinge shaft (1031), and a rear end of the secondary oil cylinder (105) is hinged on the corresponding secondary oil cylinder hinge shaft (1051).

3. The transformer primary conductor aluminum tube bending equipment according to claim 1 is characterized in that: The lifting bracket (101) is provided with a pressing head slide groove (1041), the one-step forming pressing head (104) is arranged on a pressing head slide seat, and a sliding block is provided on the lower side of the pressing head slide seat to cooperate with the pressing head slide groove (1041).

4. The transformer primary conductor aluminum tube bending equipment according to claim 1 is characterized in that: A lifting mechanism (107) is provided on the lower side of the lifting bracket (101).

5. The transformer primary conductor aluminum tube bending equipment according to claim 1 is characterized in that: The support seat (205) comprises support blocks (2052) on both sides, and the upper ends of the support blocks (2052) are provided with limiting end surfaces (2051) that abut against the aluminum tube (4).

6. The transformer primary conductor aluminum tube bending equipment according to claim 1, characterized in that: The fixing bracket (201) is provided with a pin hole, and the lower side of the supporting seat (205) is provided with a pin inserted into the corresponding pin hole.

7. The transformer primary conductor aluminum tube bending equipment according to claim 1, characterized in that: The molded limit seat (206) comprises a limit block (2061), an adjustment slide seat (2062) and a locking bolt (2063), wherein an adjustment slide groove (2012) is provided in the middle of the fixed bracket (201), the adjustment slide seat (2062) is arranged in the adjustment slide groove (2012) and is locked in position by the locking bolt (2063), two limit blocks (2061) are respectively arranged on both sides of the adjustment slide seat (2062), and the limit block (2061) is provided with an arc surface that abuts against the aluminum tube (4).

8. The transformer primary conductor aluminum tube bending equipment according to claim 7, characterized in that: The adjusting slide (2062) comprises an upper seat body and a lower seat body connected by a locking bolt (2063), and the upper seat body and the lower seat body respectively clamp the edges of the adjusting slide groove (2012) on both sides, and the limit block (2061) is arranged on the upper seat body.

9. The transformer primary conductor aluminum tube bending equipment according to claim 1, characterized in that: The lower end of the baffle (207) is hinged to a baffle seat (2071) provided on the fixed bracket (201) via a baffle hinge shaft (2073), and a positioning pin (2072) is provided at the lower end of the baffle (207) and is inserted into a positioning pin hole provided on the baffle seat (2071).

10. A control method for the transformer primary conductor aluminum tube bending equipment according to claim 1, characterized in that: The steps include: Step 1: The primary molding mechanism (1) rises to the same height as the secondary molding mechanism (2), and then the aluminum tube (4) is inserted between the primary molding press head (104) and the primary molding press wheel (106); Step 2: The main oil cylinder (103) and the auxiliary oil cylinder (105) in the primary forming mechanism (1) are started, and the aluminum tube (4) is bent into a U shape under the action of the primary forming pressing head (104) and the primary forming pressing wheel (106); Step 3: Pull out the support seat (205) on one side of the secondary molding mechanism (2), and lay flat the baffle plate (207) on the other side of the secondary molding mechanism (2), and then transfer the U-shaped aluminum tube (4) from the primary molding mechanism (1) to the secondary molding mechanism (2) along the first transmission roller (1011) and the third transmission roller (2011); Step 4: the primary forming mechanism (1) is lowered to a position where the second conveying roller (1021) and the third conveying roller (2011) are at the same height; Step 5: Install the support seat (205) back to its original position, and stand up the baffle (207), then move the aluminum tube (4) in opposite directions along the third transmission roller (2011) and the second transmission roller (1021) to tighten, at which time the arc-shaped part in the middle of the aluminum tube (4) is blocked and limited by the baffle (207); Step six: adjusting the position of the forming limit seat (206) so that the limit blocks (2061) on both sides are aligned with the position of the first bending portion (401) of the aluminum tube (4); Step 7: Each extrusion cylinder (203) of the secondary molding mechanism (2) is started to extrude the aluminum tube (4) into a waist drum shape.

Images