CN115415377A - Integrated forming process system for secondary coil water-cooling square copper pipe of transformer - Google Patents
Integrated forming process system for secondary coil water-cooling square copper pipe of transformer Download PDFInfo
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- CN115415377A CN115415377A CN202211127766.7A CN202211127766A CN115415377A CN 115415377 A CN115415377 A CN 115415377A CN 202211127766 A CN202211127766 A CN 202211127766A CN 115415377 A CN115415377 A CN 115415377A
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 54
- 239000010949 copper Substances 0.000 title claims abstract description 54
- 238000001816 cooling Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005452 bending Methods 0.000 claims abstract description 188
- 238000007667 floating Methods 0.000 claims description 57
- 238000003825 pressing Methods 0.000 claims description 26
- 230000000452 restraining effect Effects 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 244000208734 Pisonia aculeata Species 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
- B21D7/022—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment over a stationary forming member only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
- B21D7/03—Apparatus with means to keep the profile in shape
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a secondary coil water-cooling square copper pipe integrated forming process system of a transformer, which comprises a square copper pipe bending constraint boss, wherein the square copper pipe bending constraint boss comprises a first constraint side edge, a second constraint side edge and a third constraint side edge; the joint of the first constraint side and the second constraint side and the joint of the second constraint side and the third constraint side are provided with round corners; effectively avoid fan-shaped bent passage's symmetry line department to take place the problem of narrowing deformation.
Description
Technical Field
The invention belongs to the field of transformer manufacturing technology.
Background
The basic unit of a secondary water-cooling coil in the transformer of the resistance welding device is in a U-shaped square copper tube structure, and the detailed structure is referred to the prior patent document: "secondary water-cooled coil in transformer of resistance welding device (application number: 201120384155.1)"; the traditional manufacturing process for the U-shaped square copper tube structure is described in detail in 'a primary cold-bending forming device for a secondary square copper tube of a welding transformer (application number: 201820319658.2)';
the following technical problems are proposed based on the manufacturing process:
as shown in fig. 1, after the "U-shaped square copper tube structure" is bent by the "linear water-cooled square tube", a fan-shaped bent channel 4.1 is formed in the arc bent part 10.1 of the "U-shaped square copper tube structure"; in the forming process of the arc bending part 10.1, the inner arc 10.1a of the arc bending part 10.1 deforms towards the inside of the fan-shaped bending channel 4.1 due to forced deformation extrusion, so that the symmetrical dividing line 8 of the fan-shaped bending channel 4.1 is narrowed, and the passing performance of cooling liquid in the U-shaped square copper pipe structure is further influenced; thereby affecting the overall cooling performance of the transformer;
because the fan-shaped bent channel 4.1 of the U-shaped square copper tube structure cannot be detected by naked eyes, and even if the symmetrical dividing line 8 of the fan-shaped bent channel 4.1 is narrowed, the channel in the U-shaped square copper tube structure is smooth on the whole, the problem that the fan-shaped bent channel 4.1 is narrowed is not found or is neglected all the time.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides an integrated forming process system for a secondary coil water-cooling square copper pipe of a transformer, which solves the problem that the symmetrical parting line of a fan-shaped bending channel in an arc bending part is narrowed in the prior art.
The technical scheme is as follows: in order to achieve the purpose, the water-cooled square copper tube integrated forming process system for the secondary coil of the transformer comprises a square copper tube bending constraint boss, wherein the square copper tube bending constraint boss comprises a first constraint side edge, a second constraint side edge and a third constraint side edge; the joint of the first constraint side and the second constraint side and the joint of the second constraint side and the third constraint side are provided with round corners;
the bending device also comprises a first bending unit and a second bending unit which are symmetrical left and right; the bending device comprises a first bending unit, a second bending unit, a first limiting unit and a second limiting unit, wherein the first bending unit and the second bending unit are arranged on the middle section of the straight water-cooled square pipe; the first bending unit and the second bending unit rotate along the axes of the two round corners respectively, so that the left section and the right section of the linear water-cooled square pipe are bent towards the same side to form a U-shaped square copper pipe and are attached to the second constraint side and the third constraint side respectively.
Furthermore, the U-shaped square copper pipe formed by bending has two arc bending parts which are bilaterally symmetrical, the inner arc surfaces a of the arc bending parts are attached to the round corners, and the outer arc surfaces b of the arc bending parts are coaxial with the round corners, so that fan-shaped bending channels are formed in the arc bending parts.
Furthermore, the first bending unit and the second bending unit are of left and right mirror image structures.
Furthermore, the first unit of buckling and the second unit of buckling all include the gear and the integration is connected at the restraint wheel support arm of gear periphery, install first restraint gyro wheel and second restraint gyro wheel on the restraint wheel support arm side by side, first restraint gyro wheel and second restraint gyro wheel all with a side roll fit that the second restraint side was kept away from to sharp water-cooling side pipe, and first unit of buckling and the second unit of buckling two sections about with sharp water-cooling side pipe in-process of buckling into U type square copper pipe towards the same side, each first restraint gyro wheel is to the roll extrusion route of sharp water-cooling side pipe and the final arc profile route coincidence of extrados b that forms.
Furthermore, a guide hole seat is fixedly arranged at the tail end of the restraint wheel supporting arm, a pair of guide holes penetrates through the guide hole seat, guide pillars movably penetrate through the guide holes, a floating seat is fixedly connected to one ends, far away from the guide hole seat, of the pair of guide pillars, a tension spring is sleeved outside the guide pillars, and the tension spring applies tension to the floating seat; one side of the floating seat is integrally provided with a floating top pressing block; and the floating jacking block on the first bending unit and the floating jacking block on the second bending unit are propped against two ends of the linear water-cooling square pipe.
The two extending arms extend into the liquid guide channel in the linear water-cooling square pipe from two ends of the linear water-cooling square pipe along the length; the tail ends of the two extending arms are detachably fixed on the floating top pressing blocks of the first bending unit and the second bending unit respectively, the head end of each extending arm is fixedly provided with a hinged disc, the hinged disc is coaxially sleeved with an open ring body, the inner wall surface of the open ring body is in sliding fit with the outer peripheral surface of the hinged disc, one side of the open ring body, away from the hinged disc, is provided with a bending channel restraining disc, and the bending channel restraining disc is fixedly connected with the outer wall of the open ring body through a connecting arm, so that the bending channel restraining disc can freely swing around the axis of the hinged disc; the middle part of the extending arm is integrally provided with bending constraint disks, and the outer peripheral surfaces of each bending constraint disk, the open ring body and the bending channel constraint disk are in sliding tangency with the inner walls at the two sides of the liquid guide channel;
when the floating jacking block on the first bending unit and the floating jacking block on the second bending unit are abutted against two ends of the straight water-cooled square pipe which is not bent, the distance between the first constraint roller and the floating jacking block is marked as L;
after the left section and the right section of the straight water-cooled square pipe are bent to the same side to form the U-shaped square copper pipe by the first bending unit and the second bending unit, the floating top pressing block on the first bending unit and the floating top pressing block on the second bending unit still abut against the two ends of the formed U-shaped square copper pipe, the distance between the first constraint roller and the floating top pressing block is reduced from the original L to the L, the bending channel constraint disc swings around the axis of the relative hinged disc in an adaptive manner, and the axis of the bending channel constraint disc is perpendicularly intersected with the symmetrical dividing line of the fan-shaped bending channel.
Furthermore, a rack is meshed between the gear on the first bending unit and the gear on the second bending unit, and the linear motion of the rack enables the gear on the first bending unit and the gear on the second bending unit to rotate in opposite rotating directions at the same speed.
Furthermore, each guide hole seat is fixedly provided with an ejector parallel to the guide pillar, the tail end of an ejector rod of the ejector is an ejector head, and the extension of the ejector rod can enable the ejector head at the tail end of the ejector rod to eject the floating seat.
Has the beneficial effects that: the core technical effect of the invention is embodied in the step three, in the process of bending the straight water-cooled square pipe into the U-shaped square copper pipe, the bending channel restraining disc is always in the gradually formed fan-shaped bending channel, the bending channel restraining disc swings around the axis of the relative hinge plate in the forming process of the fan-shaped bending channel in an adaptive manner, when the fan-shaped bending channel is finally formed, the axis of the bending channel restraining disc is exactly and vertically intersected with the symmetrical dividing line of the fan-shaped bending channel, and the problem of narrowing deformation at the symmetrical line of the fan-shaped bending channel is effectively avoided.
Drawings
FIG. 1 is a schematic diagram of a portion where an inner channel at a bent portion of a secondary coil water-cooling square copper pipe is likely to be narrowed and deformed;
FIG. 2 is a schematic view of the overall structure of the apparatus at the end of "step two";
FIG. 3 is a schematic view of a cross-sectional view of the linear water-cooled square tube shown in FIG. 2;
FIG. 4 is a bottom view of FIG. 3;
FIG. 5 is a schematic view showing the state of the entire structure of the apparatus at the end of step three;
FIG. 6 is a schematic view of a U-shaped square copper tube cut away from the top view of FIG. 5;
FIG. 7 is a disassembled schematic view of FIG. 6;
FIG. 8 is a disassembled schematic view of FIG. 2;
fig. 9 is an enlarged partial view of fig. 8 at 11.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 to 9 show an integrated process system for a water-cooled square copper tube of a secondary coil of a transformer, as shown in fig. 2, which includes a base platform 7, wherein a rectangular square copper tube bending constraint boss 5 is provided on the base platform 7, and the square copper tube bending constraint boss 5 includes a first constraint side 5.1, a second constraint side 5.2 and a third constraint side 5.3; the connecting part of the first constraint side 5.1 and the second constraint side 5.2 and the connecting part of the second constraint side 5.2 and the third constraint side 5.3 are provided with round corners 6;
as shown in fig. 7, the bending device further comprises a first bending unit 1 and a second bending unit 2 which are symmetrical left and right; the bending device further comprises a linear water-cooling square pipe 9 to be bent, one side surface of the middle section of the linear water-cooling square pipe 9 is attached to a second constraint side edge 5.2, and the first bending unit 1 and the second bending unit 2 jointly constrain the other side surface of the linear water-cooling square pipe 9; the first bending unit 1 and the second bending unit 2 respectively rotate along the axes 40 of the two fillets 6, so that the left section and the right section of the linear water-cooled square pipe 9 are bent towards the same side to form a U-shaped square copper pipe 10 and are respectively attached to the second constraint side 5.2 and the third constraint side 5.3; the U-shaped square copper pipe 10 formed by bending has two arc bending parts 10.1 which are bilaterally symmetrical, the inner arc surface 10.1a of each arc bending part 10.1 is attached to the fillet 6, and the outer arc surface 10.1b of each arc bending part 10.1 is coaxial with the fillet 6, so that a fan-shaped bending channel 4.1 is formed in each arc bending part 10.1;
as shown in fig. 7, the first bending unit 1 and the second bending unit 2 are in left and right mirror image structures;
as shown in fig. 7, 8 and 9; the first bending unit 1 and the second bending unit 2 both comprise a gear 27 and a constraint wheel supporting arm 30 integrally connected to the periphery of the gear 27, the axis of the gear 27 coincides with the axis 40 of the corresponding round corner 6, when one side of the middle section of the linear water-cooled square pipe 9 is attached to a second constraint side 5.2, the constraint wheel supporting arm 30 is parallel to the linear water-cooled square pipe 9, a first constraint roller 29 and a second constraint roller 31 are mounted on the constraint wheel supporting arm 30 in parallel, the first constraint roller 29 and the second constraint roller 31 are both in rolling fit with one side of the linear water-cooled square pipe 9, which is far away from the second constraint side 5.2, and in the process that the first bending unit 1 and the second bending unit 2 bend the left and right sections of the linear water-cooled square pipe 9 towards the U-shaped square copper pipe 10, the rolling path of each first constraint roller 29 on the same side of the linear water-cooled square pipe 9 coincides with the finally formed arc profile path of the outer arc surface 10.1 b;
a guide hole seat 33 is fixedly arranged at the tail end of the restraint wheel supporting arm 30, a pair of guide holes 32 penetrates through the guide hole seat 33, guide pillars 35 movably penetrate through the guide holes 32, the extending direction of the pair of guide pillars 35 is consistent with the extending direction of the restraint wheel supporting arm 30, a floating seat 36 is fixedly connected to one end, far away from the guide hole seat 33, of the pair of guide pillars 35, a tension spring 34 is sleeved outside the guide pillars 35, two ends of the tension spring 34 are fixedly connected with the floating seat 36 and the guide hole seat 33 respectively, and the tension spring 34 applies tension to the floating seat 36, so that the floating seat 36 tends to be close to the guide hole seat 33; one side of the floating seat 36 is integrally provided with a floating top pressing block 17; the floating top pressing block 17 on the first bending unit 1 and the floating top pressing block 17 on the second bending unit 2 are abutted against two ends of the linear water-cooled square pipe 9;
the device also comprises two extending arms 21, wherein the two extending arms 21 extend into the liquid guide channel 4 in the linear water-cooling square tube 9 from two ends of the linear water-cooling square tube 9 along the length; the tail ends 21.1 of the two extending arms 21 are respectively detachably fixed on the floating jacking blocks 17 of the first bending unit 1 and the second bending unit 2; the disassembly structure is as follows: as in fig. 8 and 9; the floating jacking block 17 is provided with a transverse slot 19, the tail end 21.1 of the stretching arm 21 is movably inserted into the slot 19, the floating jacking block 17 is provided with an a locking hole 18, the tail end 21.1 of the stretching arm 21 is provided with a b locking hole 20, after the tail end 21.1 of the stretching arm 21 is inserted into the slot 19, the a locking hole 18 is aligned with the b locking hole 20, and the a locking hole 18 and the b locking hole 20 are locked through a detachable locking piece 16;
as shown in fig. 9, a hinge plate 24 is fixedly disposed at a head end of each of the extension arms 21, an open ring body 23 is coaxially sleeved outside the hinge plate 24, an inner wall surface of the open ring body 23 is in sliding fit with an outer peripheral surface of the hinge plate 24, a bending channel restraining disc 26 is disposed on one side of the open ring body 23 away from the hinge plate 24, and the bending channel restraining disc 26 is fixedly connected to an outer wall of the open ring body 23 through a connecting arm 25, so that the bending channel restraining disc 26 freely swings around an axis of the hinge plate 24; the middle part of the extending arm 21 is integrally provided with a bending restraint disc 22;
the width of the liquid guide channel 4 is marked as L3, and the outer diameters of the bending constraint disc 22, the open ring body 23 and the bending channel constraint disc 26 are all L3; the outer peripheral surfaces of the bending constraint disks 22, the open ring body 23 and the bending channel constraint disk 26 are in sliding tangency with the inner walls at the two sides of the liquid guide channel 4;
as shown in fig. 3, when the floating pressing block 17 on the first bending unit 1 and the floating pressing block 17 on the second bending unit 2 abut against two ends of the straight water-cooled square pipe 9 which is not bent yet, the distance between the first constraint roller 29 and the floating pressing block 17 is marked as L1;
as shown in fig. 6, after the first bending unit 1 and the second bending unit 2 bend the left and right sections of the linear water-cooled square pipe 9 towards the same side to form a U-shaped square copper pipe 10, the floating pressing block 17 on the first bending unit 1 and the floating pressing block 17 on the second bending unit 2 still abut against two ends of the formed U-shaped square copper pipe 10, the distance between the first constraint roller 29 and the floating pressing block 17 is reduced from the original L1 to L2, and the bending channel constraint disk 26 is in the formed fan-shaped bending channel 4.1, the bending channel constraint disk 26 swings adaptively around the axis of the relative hinge disk 24, and the axis of the bending channel constraint disk 26 is perpendicularly intersected with the symmetrical partition line 8 of the fan-shaped bending channel 4.1;
as shown in fig. 4, a rack 12 is engaged between a gear 27 on the first bending unit 1 and a gear 27 on the second bending unit 2, and the linear motion of the rack 12 makes the gear 27 on the first bending unit 1 and the gear 27 on the second bending unit 2 rotate in opposite directions and at the same speed; the device also comprises a linear expansion piece 14 fixed on the base platform 7, wherein the tail end of an expansion rod 13 of the linear expansion piece 14 is fixedly connected with the rack 12, so that the rack 12 is driven to displace along the length direction of the rack; the central bearing hole 28 of each gear 27 is rotatably fitted to the fixed shaft 15 on the base platform 7 through a bearing. And an ejector 50 parallel to the guide column 35 is fixedly mounted on each guide hole seat 33, the tail end of an ejector rod 51 of the ejector 50 is an ejector head, and the extension of the ejector rod 51 can enable the ejector head at the tail end of the ejector rod 51 to push the floating seat 36.
The working principle comprises the following steps: step one, attaching one side surface of the middle section of an unbent linear water-cooled square pipe 9 to a second constraint side 5.2, and enabling each first constraint roller 29 and each second constraint roller 31 on the first bending unit 1 and each second bending unit 2 to be in rolling fit with one side surface, far away from the second constraint side 5.2, of the linear water-cooled square pipe 9;
step two, extending two extending arms 21 into the liquid guide channel 4 in the linear water-cooled square pipe 9 to be bent from two ends of the linear water-cooled square pipe 9 along the length, then detachably fixing tail ends 21.1 of the two extending arms 21 on the floating ejection pressing blocks 17 of the first bending unit 1 and the second bending unit 2 respectively, controlling the ejection rods 51 of the ejectors 50 to retract, separating the tail ends of the ejection rods 51 of the ejectors 50 from the floating seat 36, and enabling the floating ejection pressing blocks 17 on the first bending unit 1 and the floating ejection pressing blocks 17 on the second bending unit 2 to abut against two ends of the linear water-cooled square pipe 9 under the elastic pull-back action of the pull-back spring 34; at the moment, the outer peripheral surfaces of the bending constraint disks 22, the open ring bodies 23 and the bending channel constraint disks 26 are all tangent to the inner walls of the two sides of the liquid guide channel 4 in a sliding manner; the distance between the first constraint roller 29 and the floating jacking block 17 is marked as L1; as in fig. 2 and 3;
step three, controlling the telescopic rod 13 of the linear expansion piece 14 to gradually extend out and drive the rack 12, so as to drive the two gears 27 to rotate in opposite rotating directions at the same speed, and further enabling the first bending unit 1 and the second bending unit 2 to integrally rotate along the axes 40 of the two fillets 6 respectively; under the common constraint of the first constraint idler wheel 29, the second constraint idler wheel 31 and the bending constraint disk 22 on the first bending unit 1 and the second bending unit 2, the left section and the right section of the linear water-cooling square pipe 9 are bent towards the same side to form a U-shaped square copper pipe 10 and are respectively attached to the second constraint side 5.2 and the third constraint side 5.3; in the process of bending the linear water-cooled square pipe 9 into the U-shaped square copper pipe 10, the rolling path of each first constraint roller 29 to the linear water-cooled square pipe 9 is overlapped with the arc contour path of the finally formed outer arc surface 10.1b, so that two arc bending parts 10.1 which are symmetrical left and right are generated on the U-shaped square copper pipe 10 formed by bending, the inner arc surface 10.1a of each arc bending part 10.1 is attached to the fillet 6, the outer arc surface 10.1b of each arc bending part 10.1 is coaxial with the fillet 6, and a fan-shaped bending channel 4.1 is formed in each arc bending part 10.1;
meanwhile, because the distance between the first constraint roller 29 and the floating top pressing block 17 is floating, under the elastic pullback action of the pullback spring 34, the floating top pressing block 17 on the first bending unit 1 and the floating top pressing block 17 on the second bending unit 2 always abut against two ends of the linear water-cooled square tube 9/U-shaped square copper tube 10, as known from the geometrical relationship, in the process of bending the linear water-cooled square tube 9 into the U-shaped square copper tube 10, the distance between the first constraint roller 29 and the floating top pressing block 17 is reduced from the original L1 to L2, so that the bending channel constraint disc 26 is always in the gradually formed fan-shaped bending channel 4.1, the fan-shaped bending channel 4.1 swings adaptively around the axis of the hinge plate 24 in the forming process, and when the fan-shaped bending channel 4.1 is finally formed, the axis of the bending channel constraint disc 26 is vertically intersected with the symmetrical line 8 of the fan-shaped bending channel 4.1, and the problem that the symmetrical line of the bending channel 4.1 is narrowed in the bending channel is effectively avoided because the partition channel constraint disc 26 is a rigid bending structure; as in fig. 5 and 6;
and step four, controlling the tail ends of the ejector rods 51 of the two ejectors 50 to extend out and eject the two floating seats 36, so that the two extending arms 21 perform outward drawing action, further driving the bending channel restraining disc 26 to separate from the fan-shaped bending channel 4.1, and finally taking down the bent and formed U-shaped square copper tube 10 along the drawing direction.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (8)
1. A secondary coil water-cooling square copper pipe integrated forming process system of a transformer is characterized in that: the bending restraining device comprises a square copper pipe bending restraining boss (5), wherein the square copper pipe bending restraining boss (5) comprises a first restraining side edge (5.1), a second restraining side edge (5.2) and a third restraining side edge (5.3); the joint of the first constraint side (5.1) and the second constraint side (5.2) and the joint of the second constraint side (5.2) and the third constraint side (5.3) are provided with fillets (6);
the method is characterized in that: the bending device also comprises a first bending unit (1) and a second bending unit (2) which are symmetrical left and right; the bending device is characterized by further comprising a linear water-cooling square pipe (9) to be bent, wherein one side surface of the middle section of the linear water-cooling square pipe (9) is attached to a second constraint side (5.2), and the first bending unit (1) and the second bending unit (2) jointly constrain the other side surface of the linear water-cooling square pipe (9); the first bending unit (1) and the second bending unit (2) rotate along the axis (40) of the fillet (6) respectively, so that the left section and the right section of the straight water-cooling square pipe (9) are bent to the same side to form a U-shaped square copper pipe (10), and are attached to the second constraint side (5.2) and the third constraint side (5.3) respectively.
2. The integrated forming process system for the secondary coil water-cooling square copper tube of the transformer according to claim 1, wherein: the U-shaped square copper pipe (10) formed by bending is provided with two arc bending parts (10.1) which are bilaterally symmetrical, the inner arc surface (10.1 a) of each arc bending part (10.1) is attached to the corresponding circular corner (6), and the outer arc surface (10.1 b) of each arc bending part (10.1) is coaxial with the corresponding circular corner (6), so that a fan-shaped bending channel (4.1) is formed in each arc bending part (10.1).
3. The integrated forming process system for the secondary coil water-cooling square copper tube of the transformer according to claim 1, wherein: the first bending unit (1) and the second bending unit (2) are of left and right mirror image structures.
4. The transformer secondary coil water-cooling square copper pipe integrated forming process system according to claim 3, characterized in that: first unit (1) and the second of buckling all include gear (27) and the integration connection at the restraint wheel support arm (30) of gear (27) periphery, install first restraint gyro wheel (29) and second restraint gyro wheel (31) on restraint wheel support arm (30) side by side, first restraint gyro wheel (29) and second restraint gyro wheel (31) all with a side roll cooperation of second restraint side (5.2) is kept away from in straight line water-cooling side pipe (9), and first unit (1) and the second of buckling are buckled unit (2) and are buckled the in-process of buckling into U type square copper pipe (10) with the same side of controlling two sections of side of straight line water-cooling side pipe (9), each the roll extrusion route of first restraint gyro wheel (29) to straight line water-cooling side pipe (9) and final formation the circular arc profile route coincidence of extrados (10.1 b).
5. The transformer secondary coil water-cooling square copper pipe integrated forming process system according to claim 4, characterized in that: a guide hole seat (33) is fixedly arranged at the tail end of the restraint wheel supporting arm (30), a pair of guide holes (32) penetrates through the guide hole seat (33), guide pillars (35) movably penetrate through the guide holes (32), a floating seat (36) is fixedly connected to one ends, far away from the guide hole seat (33), of the guide pillars (35), a tension spring (34) is sleeved outside the guide pillars (35), and the tension spring (34) applies tension to the floating seat (36); one side of the floating seat (36) is integrally provided with a floating top pressing block (17); the floating jacking block (17) on the first bending unit (1) and the floating jacking block (17) on the second bending unit (2) are propped against two ends of the linear water-cooling square pipe (9).
6. The transformer secondary coil water-cooling square copper pipe integrated forming process system according to claim 5, characterized in that: the device also comprises two extending arms (21), wherein the two extending arms (21) extend into the liquid guide channel (4) in the linear water-cooling square pipe (9) from two ends of the linear water-cooling square pipe (9) along the length; the tail ends (21.1) of the two extending arms (21) are detachably fixed on floating top pressing blocks (17) of the first bending unit (1) and the second bending unit (2) respectively, the head end of each extending arm (21) is fixedly provided with a hinged disc (24), the hinged discs (24) are coaxially sleeved with an open ring body (23), the inner wall surface of the open ring body (23) is in sliding fit with the outer peripheral surface of the hinged disc (24), one side, far away from the hinged disc (24), of the open ring body (23) is provided with a bending channel restraining disc (26), and the bending channel restraining disc (26) is fixedly connected with the outer wall of the open ring body (23) through a connecting arm (25), so that the bending channel restraining disc (26) can freely swing around the axis of the hinged disc (24); bending restraint disks (22) are integrally arranged in the middle of the extending arm (21), and the outer peripheral surfaces of the bending restraint disks (22), the open ring body (23) and the bending channel restraint disk (26) are in sliding tangency with the inner walls of the two sides of the liquid guide channel (4);
when the floating jacking block (17) on the first bending unit (1) and the floating jacking block (17) on the second bending unit (2) are abutted against two ends of the straight water-cooled square pipe (9) which is not bent, the distance between the first constraint roller (29) and the floating jacking block (17) is marked as L1;
after the left section and the right section of the linear water-cooling square pipe (9) are bent towards the same side into the U-shaped square copper pipe (10) by the first bending unit (1) and the second bending unit (2), the floating pressing block (17) on the first bending unit (1) and the floating pressing block (17) on the second bending unit (2) still abut against two ends of the U-shaped square copper pipe (10) formed by the first bending unit and the second bending unit, the distance between the first constraint roller (29) and the floating pressing block (17) is reduced from the original L1 to L2, the bending channel constraint disc (26) swings around the axis of the relative hinge disc (24) in an adaptive manner, and the axis of the bending channel constraint disc (26) is vertically intersected with the symmetrical dividing line (8) of the fan-shaped bending channel (4.1).
7. The transformer secondary coil water-cooling square copper pipe integrated forming process system according to claim 6, characterized in that: a rack (12) is meshed between a gear (27) on the first bending unit (1) and a gear (27) on the second bending unit (2), and the linear motion of the rack (12) enables the gear (27) on the first bending unit (1) and the gear (27) on the second bending unit (2) to rotate in opposite rotating directions at the same speed.
8. The integrated forming process system for the water-cooled square copper tube of the secondary coil of the transformer according to claim 7, wherein: and ejector rods (50) parallel to the guide columns (35) are fixedly arranged on the guide hole seats (33), the tail ends of ejector rods (51) of the ejector rods (50) are ejector heads, and the ejector heads at the tail ends of the ejector rods (51) can be pushed to the floating seat (36) by the aid of extension of the ejector rods (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211127766.7A CN115415377A (en) | 2022-09-16 | 2022-09-16 | Integrated forming process system for secondary coil water-cooling square copper pipe of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211127766.7A CN115415377A (en) | 2022-09-16 | 2022-09-16 | Integrated forming process system for secondary coil water-cooling square copper pipe of transformer |
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| Publication Number | Publication Date |
|---|---|
| CN115415377A true CN115415377A (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211127766.7A Withdrawn CN115415377A (en) | 2022-09-16 | 2022-09-16 | Integrated forming process system for secondary coil water-cooling square copper pipe of transformer |
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| CN (1) | CN115415377A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116921519A (en) * | 2023-09-15 | 2023-10-24 | 山东宏泰电器有限公司 | Refrigerator compressor connecting pipe bending processing device |
-
2022
- 2022-09-16 CN CN202211127766.7A patent/CN115415377A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116921519A (en) * | 2023-09-15 | 2023-10-24 | 山东宏泰电器有限公司 | Refrigerator compressor connecting pipe bending processing device |
| CN116921519B (en) * | 2023-09-15 | 2023-11-17 | 山东宏泰电器有限公司 | Refrigerator compressor connecting pipe bending processing device |
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