CN112642933A - Forming die and process for commutator copper shell - Google Patents
Forming die and process for commutator copper shell Download PDFInfo
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- CN112642933A CN112642933A CN202011406394.2A CN202011406394A CN112642933A CN 112642933 A CN112642933 A CN 112642933A CN 202011406394 A CN202011406394 A CN 202011406394A CN 112642933 A CN112642933 A CN 112642933A
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- rounding
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- fixing ring
- hook
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 59
- 239000010949 copper Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000008569 process Effects 0.000 title claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 137
- 238000004080 punching Methods 0.000 claims abstract description 89
- 238000005452 bending Methods 0.000 claims abstract description 70
- 239000000463 material Substances 0.000 claims abstract description 63
- 238000005520 cutting process Methods 0.000 claims abstract description 31
- 238000009966 trimming Methods 0.000 claims abstract description 31
- 230000007306 turnover Effects 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims description 18
- 238000007493 shaping process Methods 0.000 claims description 16
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000000969 carrier Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 8
- 238000007667 floating Methods 0.000 description 20
- 230000009471 action Effects 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
-
- 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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/001—Shaping combined with punching, e.g. stamping and perforating
-
- 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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/003—Simultaneous forming, e.g. making more than one part per stroke
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
The application relates to a forming die and a process for a commutator copper shell, which comprises a die frame and a trimming mechanism which is sequentially arranged along the advancing direction of a material strip and used for punching and cutting a plurality of ribs on the material strip, wherein connecting strips and fixing strips are formed on the parts of the material strip, which are positioned at the two sides of the ribs, and the connecting strips are connected with the fixing strips through connecting rods; the bending mechanism is used for bending the end part of the rib upwards to form a hook angle; the cutting mechanism is used for cutting the fixing strip into a plurality of sections of fixing pieces; the rounding mechanism is used for processing the fixing sheet into a fixing ring, and a through hole is formed in the middle of the fixing ring; the turnover mechanism is used for turning over the fixing ring to enable the opening of the through hole to face the vertical direction; an inner hook punching step, which is used for punching the inner wall of the fixing ring to form an inner hook; and the stripping mechanism is used for cutting off the connecting rod so as to separate the formed copper shell and the connecting strip. This application has the effect that commutator copper shell production efficiency is high.
Description
Technical Field
The application relates to the field of commutators, in particular to a forming die and a process for a commutator copper shell.
Background
A commutator is an important component of the armature of a dc motor and an ac commutator motor, which functions to commutate as the motor rotates. The commutator is generally cylindrical or disk-shaped and is made up of a plurality of copper sheets separated by mica sheets, each of which is connected to some of the armature winding elements.
In the related art, as shown in fig. 1, a copper shell of a commutator is disclosed, which includes a fixing ring 1, a plurality of K-shaped inner hooks 2 formed inside the fixing ring 1, and a plurality of hook corners 3 formed outside the fixing ring 1.
The fixing ring, the inner hook and the hook angle in the copper shell of the commutator are processed and formed by means of corresponding independent punch dies, blanks need to be detached from a previous die set and then installed into a next die set for continuous processing during production, and the commutator copper shell is complex in operation, low in production efficiency and to be improved.
Disclosure of Invention
In order to improve the production efficiency of the copper shell of the commutator, the application provides a forming die and a forming process of the copper shell of the commutator.
In a first aspect, the application provides a forming die for a commutator copper shell, which adopts the following technical scheme:
a forming die for a commutator copper shell comprises a die frame and a plurality of die holders sequentially arranged on the die frame along the advancing direction of a material belt
The edge cutting mechanism is used for punching and forming a plurality of mutually parallel ribs in the middle of the material belt, connecting strips and fixing strips are formed on the parts, located on the two sides of the ribs, of the material belt, one ends of the ribs are connected with the fixing strips, and the connecting strips are connected with the fixing strips through connecting rods;
the bending mechanism is used for bending the free end of the rib upwards to form a hook angle;
the cutting mechanism is used for cutting the fixing strip into a plurality of sections of fixing pieces, and each section of fixing piece is connected with a connecting rod and a plurality of hook angles;
the rounding mechanism is used for processing the fixing piece into an annular fixing ring step by step, and a through hole is formed in the middle of the fixing ring;
the turnover mechanism is used for turning over the fixing ring so that the opening of the through hole faces to the vertical direction;
the inner hook punching mechanism is used for punching and forming an inner hook on the inner wall of the fixing ring;
and the stripping mechanism is used for cutting off the connecting rod so as to separate the formed copper shell and the connecting strip.
Through adopting above-mentioned technical scheme, the material area is through each processing agency in proper order when advancing along the die carrier, and the in-process of marcing, the material area is earlier acted on through trimming cut mechanism and is used for die-cut formation many ribs, and wherein the material area lies in the part of rib both sides and forms connecting strip and fixed strip, and the connecting strip passes through the connecting rod with the fixed strip and links to each other. Then the bending mechanism works to enable one end of the edge strip, which is far away from the fixing strip, to be bent upwards by 90 degrees, so that a hook angle is formed; and then the fixed strip is cut into a plurality of sections of fixed sheets by a cutting mechanism so as to cut blanks for forming different commutator copper shells. After the fixing sheet is moved to the rounding mechanism, the rounding mechanism works and enables the fixing sheet to be gradually extruded into a fixing ring, and then the fixing ring is upwards turned by 90 degrees through the turning mechanism, so that the opening of the through hole in the middle of the fixing ring faces to the vertical direction; and the turned fixing ring is punched by the inner hook punching mechanism to form an inner hook, and finally the stripping mechanism works and cuts off the connecting rod, so that the separation of the formed copper shell and the material belt is realized. The copper shell can be formed in one set of die at one time during processing, and has high production efficiency and good forming effect.
Optionally, circle-forming mechanism is including the circle-forming subassembly and a plurality of crooked subassembly that set gradually, circle-forming subassembly is located one side that crooked subassembly is close to tilting mechanism, crooked subassembly is including crooked last mould and crooked lower mould, the lower extreme of mould is equipped with the concave arc face in the bending, the upper end of crooked lower mould is equipped with the convex arc face, and the internal diameter of concave arc face reduces along the advancing direction in material area in each crooked subassembly in proper order, the stationary blade is extruded into the arcuation through mould and crooked lower mould in the bending.
By adopting the technical scheme, when the fixing sheet formed by the cutting mechanism is moved to the bending assembly, the fixing sheet is positioned between the upper bending die and the lower bending die, and after the upper bending die is pressed down, the fixing sheet can be extruded into an arc shape matched with the concave arc surface and the convex arc surface by the upper bending die and the lower bending die. The bending assemblies are arranged into a plurality of groups, so that the fixing sheet can be gradually extruded into arc blocks with sequentially reduced inner diameters, bending traces are not easily generated on the surface of the fixing sheet during bending, the bending effect is good, and the quality of finished products is high.
Optionally, the rounding assembly comprises a rounding upper die, a rounding lower die and a shaping cylinder, wherein the rounding upper die and the rounding lower die are respectively provided with a rounding concave surface with the same inner diameter at the end surface close to each other, and a piston rod of the shaping cylinder is horizontally arranged and is located in the rounding concave surface at the lower side.
By adopting the technical scheme, when the bent arc-shaped fixing piece moves to the rounding assembly, the fixing piece is positioned between the rounding upper die and the rounding lower die, and the piston rod of the shaping cylinder extends into the rounding concave surface of the rounding lower die. When the rounding upper die is pressed down, the fixing sheet is firstly contacted with the rounding concave surface in the rounding upper die and is gradually extruded into the rounding lower die under the action of the rounding upper die, so that the fixing ring is pressed. The piston rod butt of location cylinder plays the effect of supporting the stationary blade at the downside of stationary blade for the solid fixed ring lateral wall after the shaping is difficult for inwards caving, has further improved solid fixed ring's finished product quality. After rounding is finished, the piston rod of the positioning cylinder is shortened and separated from the fixing ring, so that the fixing ring is moved to the next mechanism for further processing.
Optionally, tilting mechanism is including two upset subassemblies that set gradually, the upset subassembly is including the mould in the upset, be located the upset under the mould in the upset, set up in upset lower mould downside and the reset spring who links to each other with the die carrier and be located the ejector pin of upset lower mould one side, the ejector pin distributes along the width direction in material area with the upset lower mould, and wherein the ejector pin that is close to the rounding subassembly is used for the outer wall of the solid fixed ring of butt in order to push away solid fixed ring, the ejector pin of keeping away from the rounding subassembly is used for the solid fixed ring's of butt inner wall.
By adopting the technical scheme, when the fixing ring moves to the previous overturning assembly close to the rounding assembly, the overturning upper die in the overturning assembly moves downwards to enable the overturning lower die to compress the reset spring, the connecting rod is clamped by the overturning upper die and the overturning lower die, and when the overturning lower die presses down the reset spring, the ejector rod close to the ejector rod is abutted against the outer wall of the fixing ring and pushes the fixing ring upwards, so that the fixing ring overturns 45 degrees by taking the fixed end of the connecting rod as an axis.
Similarly, when the fixed ring after 45 degrees of overturning moves to the next overturning component, the upper die and the lower die in the overturning component are firstly made to clamp the connecting rod in an overturning mode, the lower die in the overturning mode pushes down the reset spring connected with the lower die in the overturning mode, the ejector rod close to the lower die in the overturning mode abuts against the inner wall of the fixed ring, so that the fixed ring continues to overturn by 45 degrees by taking the fixed end of the connecting rod as the axis, until the fixed ring moves to the through hole in the middle of the fixed ring and faces the vertical direction, the 90-degree process of overturning the fixed ring is achieved, the overturning process is stable and orderly, and.
In addition, in the process of turning the fixing ring, the connecting rod is fixed by the part clamped by the turning upper die and the turning lower die, and the connecting end of the connecting rod and the fixing ring can synchronously rotate along with the fixing ring, so that the connecting rod is turned into a shape the same as the hook angle, the connecting rod can be used as the hook angle after being formed, and the material belt is high in utilization rate and saves resources.
Optionally, still including locating tilting mechanism and towards the whole circle mechanism between the inner hook mechanism, whole circle mechanism is including whole circle last mould and whole circle lower mould, the top diameter of whole circle lower mould is less than solid fixed ring's internal diameter, the last mould of whole circle is cylindricly and the middle part is equipped with the hole of stepping down that supplies solid fixed ring to penetrate.
Through adopting above-mentioned technical scheme, when solid fixed ring moved to the rounding mechanism, the upper die of rounding was established in solid fixed ring's upper and lower both sides with the lower mould branch of rounding, when the mould pushed down on the rounding, solid fixed ring can overlap in the outside of rounding lower mould and by the mould extrusion regular ring on the rounding, the mould during the rounding stability is high, the shaping is effectual.
In a second aspect, the present application provides a forming process of a commutator copper shell, which adopts the following technical scheme:
a molding process of a commutator copper shell comprises the following steps,
the method comprises the following steps of trimming, namely, punching and forming a plurality of mutually parallel ribs in the middle of a material strip by using a trimming mechanism, wherein connecting strips and fixing strips are formed on parts, positioned on two sides of the ribs, of the material strip, one ends of the ribs are connected with the fixing strips, and the connecting strips are connected with the fixing strips through connecting rods;
a step of forming a hook angle, which is to bend the free end of the rib upwards by 90 degrees by using a bending mechanism to form a hook angle;
a rounding step, namely cutting the fixing strip into a plurality of sections of fixing pieces through a cutting mechanism, wherein each section of fixing piece is provided with a connecting rod and a plurality of hook angles; then utilizing a bending assembly and a rounding assembly to gradually extrude the fixing sheet into a fixing ring;
turning, namely turning the fixing ring upwards through a turning assembly to enable an opening of a through hole in the middle of the fixing ring to face the vertical direction;
an inner hook punching step, namely punching an inner hook on the inner wall of the fixing ring by using an inner hook punching mechanism to form the inner hook;
and a stripping step, namely cutting off the connecting rod by using a stripping mechanism so as to separate the formed copper shell and the connecting strip.
Through adopting above-mentioned technical scheme, the material area is marchd the in-process, makes the material area obtain many ribs that are parallel to each other through the step of cutting edge earlier, and the material area is formed with long banding connecting strip and fixed strip in the part of rib both sides, and the connecting strip is connected through the connecting rod that is on a parallel with the rib with the fixed strip. And the end part of the edge strip, which is far away from the fixing strip, is bent upwards through the step of forming the hook angle, so that the hook angle for binding the wire is formed. And then the material belt enters a rounding step, the strip-shaped fixing strip is cut into a plurality of sections of fixing pieces through a cutting mechanism, each fixing piece is provided with a connecting rod and a plurality of hook angles and used for processing a commutator copper shell, and the middle parts of the cut fixing pieces are kept connected with the connecting strips through the connecting rods. The stator obtained after cutting is gradually extruded into a fixed ring through a bending assembly and a rounding assembly; then the fixing ring is turned upwards by 90 degrees through the turning step, so that the opening of the through hole in the middle of the fixing ring faces to the vertical direction, and the shape of the bent connecting rod is the same as the hook angle. And then, an inner hook punching step is carried out, so that the inner wall of the fixing ring is punched by an inner hook punching mechanism to form an inner hook, and finally, the connecting part of the connecting rod and the connecting strip is cut off in a material stripping step, so that the blanking of the formed copper shell is realized.
The processing steps are realized by matching the upper die and the lower die of the corresponding mechanism, the material belt can be formed into the copper shell in one set of die during processing, compared with the mode that the material belt which is locally processed is taken out firstly and then is loaded into other dies for processing on the next step, the operation is simple and convenient, the labor intensity of workers is low, and the production efficiency of the copper shell of the commutator is high.
Optionally, the method further comprises a transverse punching step before the trimming step, namely, a plurality of hook grooves are formed in the material strip in a transverse cutting mode by using a horizontally moving transverse punching knife, wherein the moving direction of the transverse punching knife is parallel to the width direction of the material strip, and a hook block is formed between every two adjacent hook grooves.
By adopting the technical scheme, the hook groove formed in the transverse punching step can be separated on the material belt to form a plurality of hook blocks, wherein each hook block is used as a blank for forming the inner hook of the commutator copper shell, and the subsequent inner hook punching mechanism is convenient to punch the hook blocks into the inner hook. The transverse punching step is arranged before the trimming step, so that the bent hook angle cannot be influenced during transverse punching operation, and the quality of a finished copper shell is high.
Optionally, the step of forming the hook angle further includes a chamfering step, that is, fillets are machined at ends, far away from the fixing strip, of the edge strip and the connecting rod obtained in the step of trimming, and the chamfering step is performed before a step of bending the edge strip to form the hook angle.
Through adopting above-mentioned technical scheme, the tip that the fixed strip was kept away from to ribs and connecting rod can form the fillet after the chamfer process, and when the ligature copper line on colluding the angle in the follow-up copper sheathing use, this fillet not only makes the copper line be difficult for being cut off by the edges and corners of colluding the angle, can also protect the staff not cut, and the potential safety hazard is little. The chamfering process is arranged before the bending process, and compared with the chamfering process arranged after the bending process, the chamfering process is more difficult to straighten the bent hook angle or influence the bending angle of the hook angle, and the quality of the finished copper shell is further improved.
Optionally, the turning step includes a step of turning the fixing ring by 45 ° by using a plunger to abut against an outer wall of the fixing ring, and a step of turning the fixing ring by 90 ° by using another plunger to abut against an inner wall of the fixing ring after turning by 45 °.
By adopting the technical scheme, when the fixing ring is turned over, one ejector rod firstly abuts against the outer wall of the fixing ring, and the fixing ring is pushed upwards to be turned over for 45 degrees; then the fixing ring is made to travel to the position above the other mandril, then the other mandril is abutted against the inner wall of the fixing ring, and the fixing ring is pushed to turn over 90 degrees. The fixed ring is subjected to twice overturning jacking operations in the overturning step, the ejector rod abuts against the inner wall of the fixed ring during the later jacking, the fixed ring is not easy to deform in the jacking process, and the improvement of the quality of a finished copper shell is facilitated.
Optionally, the method further comprises a rounding step after the turning step, namely, the fixing ring is extruded into a regular circular ring through a rounding mechanism, and the inner hook punching step is performed on the rounded fixing ring.
By adopting the technical scheme, in the rounding step, if a horizontal rounding mode is adopted, on one hand, the half rings capable of moving horizontally are assembled on the two sides of the fixing ring, and then the two half rings move in opposite directions to extrude the fixing ring, so that the fixing ring is easy to extrude from the junction of the two half rings in the rounding process, and the forming effect is poor; on the other hand, the overall structure for realizing horizontal rounding is relatively more, the structure not only occupies larger assembly space, but also improves the production cost of the die and reduces the stability of the die during use, thereby improving the fault probability of the die and reducing the production efficiency. The forming process is characterized in that the rounding upper die is pressed outside the fixing ring along the vertical direction along with the matching of the rounding upper die and the rounding lower die, so that the side wall of the fixing ring is extruded into a regular circular ring.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the commutator copper shell can be processed and formed in a set of dies after a series of steps during production, the operation is simple, and the production efficiency is high;
2. after the fixing sheet is extruded into the fixing ring by the rounding assembly, the fixing sheet is sequentially turned over by 45 degrees and then turned over to 90 degrees through the ejector rods in the two turning assemblies until the through hole in the middle of the fixing ring faces to the vertical direction, so that the inner hook is formed under the action of the inner hook punching mechanism, and the fixing ring is not easy to deform and is stable to turn over during jacking and turning;
3. the rounding mechanism realizes rounding of the fixing ring by vertically moving the rounding upper die and pressing the rounding upper die outside the fixing ring, and the die is high in stability, low in failure rate and good in forming effect.
Drawings
Fig. 1 is a schematic structural view of a commutator copper case in the related art.
Fig. 2 is a schematic view of a commutator copper shell forming die in an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a floating mechanism in an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a pre-punching mechanism in the embodiment of the present application.
Fig. 5 is a partial schematic view of the material tape after being processed by the pre-punching mechanism in the embodiment of the present application.
Fig. 6 is a schematic structural view of a cross punch in an embodiment of the present application.
Fig. 7 is a partial schematic view of the tape after being processed by the cross punching mechanism in the embodiment of the present application.
Fig. 8 is a schematic structural view of the trimming punch in the embodiment of the present application.
Fig. 9 is a partial schematic view of the material tape after being processed by the trimming mechanism in the embodiment of the present application.
Fig. 10 is a schematic structural view of a chamfering punch and a bending mechanism in an embodiment of the present application.
Fig. 11 is a partial schematic view of the tape after being processed by the cutting mechanism in the embodiment of the present application.
Fig. 12 is a schematic structural view of a rounding mechanism in the embodiment of the present application.
Fig. 13 is a schematic structural diagram of the turnover mechanism in the embodiment of the present application.
Fig. 14 is a schematic structural diagram of a rounding mechanism, an inner hook punching mechanism and a stripping mechanism in the embodiment of the application.
Description of reference numerals: 1. a fixing ring; 2. an inner hook; 3. hooking corners; 4. a mold frame; 41. an upper die holder; 42. a lower die holder; 5. a pre-punching mechanism; 51. pre-punching an upper die; 52. pre-punching a lower die; 521. punching; 6. a floating mechanism; 61. a floating spring; 62. floating pin; 621. a through hole; 7. a transverse punching mechanism; 71. a transverse punching cutter; 711. transversely punching a groove; 8. a trimming mechanism; 81. trimming punches; 811. cutting edge holes; 9. a chamfering mechanism; 91. chamfering the punch; 92. chamfering grooves; 10. a bending mechanism; 101. bending the upper die; 102. bending the lower die; 103. floating blocks; 104. bending the spring; 105. a fixed part; 106. a pressing part; 11. a cutting mechanism; 111. a cutter; 12. a rounding mechanism; 13. a turnover mechanism; 131. turning over the upper die; 132. turning over the lower die; 133. a return spring; 134. a top rod; 14. a rounding mechanism; 141. rounding and molding; 142. a hole of abdication; 143. rounding the lower die; 15. an inner hook punching mechanism; 151. an upper punch; 152. a lower punch; 153. punching a hook; 154. a positioning column; 155. sharp corners; 16. a material stripping mechanism; 161. stripping and molding the upper die; 162. stripping the lower die; 163. a stripping groove; 164. a blanking port; 17. a material belt; 171. a circular hole; 172. a bottom band; 173. a positioning belt; 174. positioning a groove; 175. a hook groove; 176. hooking the block; 177. a rib; 178. a connecting strip; 179. a fixing strip; 18. a connecting rod; 19. a fixing sheet; 20. a rounding assembly; 201. rounding and molding the upper die; 202. rounding the lower die; 203. shaping the air cylinder; 204. a rounded concave surface; 205. a guiding arc angle; 21. a bending assembly; 211. bending the upper die; 212. bending the lower die; 213. a concave arc surface; 214. a convex cambered surface.
Detailed Description
The present application is described in further detail below with reference to figures 1-14.
The embodiment of the application discloses forming die of commutator copper casing for process the commutator copper casing as shown in figure 1, this commutator copper casing includes solid fixed ring 1, the interior hook 2 of a plurality of K types of shaping in solid fixed ring 1 inner wall and a plurality of colludes angle 3 of shaping in solid fixed ring 1 outer wall.
Referring to fig. 2, the forming die for the commutator copper shell comprises a die frame 4, and a pre-punching mechanism 5, a floating mechanism 6, a transverse punching mechanism 7, a trimming mechanism 8, a chamfering mechanism 9, a bending mechanism 10, a cutting mechanism 11, a rounding mechanism 12, a turnover mechanism 13, a rounding mechanism 14, an inner hook punching mechanism 15 and a stripping mechanism 16 which are sequentially installed on the die frame 4 along the advancing direction of a material belt 17.
Referring to fig. 2, the die carrier 4 includes an upper die holder 41 and a lower die holder 42, the upper die holder 41 moves vertically toward the lower die holder 42 under the action of an external power mechanism during stamping, and in some embodiments, the external power mechanism for driving the upper die holder 41 to move may be an oil cylinder or the like.
Referring to fig. 2 and 3, the floating mechanism 6 includes a floating spring 61 disposed on the lower die base 42 and a floating pin 62 fixed on the top of the floating spring 61, a through hole 621 extending horizontally is formed in the floating pin 62, the extending direction of the through hole 621 is parallel to the length direction of the tape 17, and the tape 17 is inserted into the through hole 621. When the floating spring 61 is in the natural state, the through hole 621 extends beyond the lower die base 42 and keeps the tape 17 between the upper die base 41 and the lower die base 42. When the upper die holder 41 is pressed down, the floating pin 62 moves down and compresses the floating spring 61, and the material belt 17 moves down and abuts against the lower die holder 42. After the upper die holder 41 is separated from the lower die holder 42, the floating spring 61 is reset under the action of the elastic force thereof, so that the floating pin 62 drives the material belt 17 to reset.
Referring to fig. 4 and 5, the pre-punching mechanism 5 includes a pre-punching upper die 51 disposed on the upper die holder 41 and a pre-punching lower die 52 disposed on the lower die holder 42, the pre-punching upper die 51 is located right above the pre-punching lower die 52, a bottom end cross-section of the pre-punching upper die 51 is circular, a punching hole 521 for penetrating the bottom of the pre-punching upper die 51 is disposed in the middle of the pre-punching lower die 52, the punching hole 521 extends along the vertical direction, and a lower side opening of the punching hole is larger than an upper side opening of the punching hole, so that. When the material belt 17 is conveyed to the pre-punching mechanism 5 after being unreeled, the pre-punching upper die 51 presses down and punches a round hole 171 on the edge of the material belt 17, and waste materials formed by punching are discharged through a lower side opening of the punching hole 521.
Referring to fig. 2 and 6, the transverse punching mechanism 7 includes a transverse punching blade 71 slidably mounted on the lower die base 42, an upper end of the transverse punching blade 71 is higher than an upper end surface of the lower die base 42, the transverse punching blade 71 is driven to move horizontally by a power mechanism mounted on the lower die base 42, in some embodiments, the power mechanism may be an air cylinder or the like, and a moving direction of the transverse punching blade 71 is parallel to a width direction of the tape 17.
Referring to fig. 6 and 7, a plurality of transverse punching grooves 711 parallel to each other are continuously distributed on the upper end surface of the transverse punching knife 71, and the distribution direction of the plurality of transverse punching grooves 711 is parallel to the length direction of the material tape 17. The material belt 17 includes a bottom belt 172 and a positioning belt 173 integrally formed on the lower side of the bottom belt 172, the length of the positioning belt 173 is equal to that of the bottom belt 172, and a positioning groove 174 extending along the length direction of the positioning belt 173 is formed in the middle of the positioning belt 173. When the material belt 17 moves to the transverse punching mechanism 7, the upper die base 41 moves downwards and presses the material belt 17 to the upper side of the lower die base 42, and meanwhile, the power mechanism drives the transverse punching knife 71 to horizontally punch the material belt 17, so that a plurality of hook grooves 175 are punched on the positioning belt 173, hook blocks 176 are formed between every two adjacent hook grooves 175, and the hook blocks 176 are processed into the inner hooks 2 through a subsequent mechanism.
Referring to fig. 8 and 9, the trimming mechanism 8 includes two trimming punches 81 installed on the upper die base 41, the trimming punches 81 have square cross sections, one end of each trimming punch 81 is provided with a plurality of parallel trimming holes 811, and a gap is left between the two trimming punches 81. When the material belt 17 moves to the trimming mechanism 8, the trimming punch 81 presses down and punches and cuts the bottom belt 172 to form a plurality of ribs 177 parallel to each other, the material belt 17 is formed with connecting strips 178 and fixing strips 179 on the portions of both sides of the ribs 177 along the width direction of the material belt 17, one end of each rib 177 is fixedly connected with the fixing strip 179, the other end of each rib 177 is disconnected with the connecting strip 178, the portion, which is not cut, of the material belt 17 between the two trimming punches 81 is formed with a connecting rod 18, and the two ends of each connecting rod 18 are respectively connected with the connecting strips 178 and the fixing strips 179.
Referring to fig. 2 and 10, the chamfering mechanism 9 includes a chamfering punch 91 provided on the upper die base 41, and a plurality of chamfering grooves 92 are continuously distributed on the bottom of the chamfering punch 91 in the horizontal direction. When the rib 177 and the connecting rod 18 formed by the action of the trimming mechanism 8 move to the chamfering mechanism 9, the chamfering punch 91 presses down and punches a fillet at the end of the rib 177 and the connecting rod 18 away from the fixing strip 179.
Referring to fig. 2 and 10, the bending mechanism 10 includes a bending upper die 101 disposed on the upper die base 41, a bending lower die 102 disposed on the lower die base 42, a floating block 103 located on one side of the bending lower die 102, and a bending spring 104 connected to a lower side of the floating block 103, a bottom end of the bending spring 104 is fixed on the lower die base 42, and the bending upper die 101 and the bending lower die 102 are disposed along a width direction of the material tape 17. The bending upper die 101 includes a fixing portion 105 fixed to the upper die base 41 and a pressing portion 106 integrally formed on a lower side of the fixing portion 105, wherein the pressing portion 106 is located right above the floating block 103. When the rib 177 moves to the bending mechanism 10, the bending upper die 101 presses down and the pressing portion 106 contacts with the material belt 17 first, so that the floating block 103 presses down the bending spring 104, and meanwhile, the bending lower die 102 jacks up the free end of the rib 177, so that the rib 177 bends up by 90 degrees and forms a hook angle 3.
Referring to fig. 2 and 11, the cutting mechanism 11 includes a cutter 111 mounted on the upper die base 41, the cutter 111 can cut the long fixing strip 179 into a plurality of fixing pieces 19 when moving downwards along with the upper die base 41, and each fixing piece 19 is connected with a connecting rod 18 and a plurality of hook angles 3 for forming a commutator copper shell.
Referring to fig. 2 and 12, the rounding mechanism 12 includes a rounding unit 20 and three sets of bending units 21, and the rounding unit 20 is located on one side of the bending units 21 adjacent to the turnover mechanism 13. The bending assembly 21 comprises an upper bending die 211 arranged on the upper die holder 41 and a lower bending die 212 arranged on the lower die holder 42, a concave arc surface 213 is arranged at the lower end of the upper bending die 211, a convex arc surface 214 is arranged at the upper end of the lower bending die 212, and the inner diameters of the concave arc surfaces 213 in the three groups of bending assemblies 21 are sequentially reduced along the advancing direction of the material belt 17. After the fixing plate 19 moves to the bending assembly 21, the upper bending die 211 moves downwards to extrude the fixing plate 19 into an arc block, and the inner diameter of the arc block formed by the fixing plate 19 under the action of the three bending assemblies 21 is gradually reduced.
Referring to fig. 2 and 12, the rounding assembly 20 includes a rounding die 201, a rounding die 202, and a shaping cylinder 203, the rounding die 201 is mounted on the upper die base 41, the rounding die 202 is mounted on the lower die base 42 and located right below the rounding die 201, rounding concave surfaces 204 having the same inner diameter are respectively formed on the end surfaces of the rounding die 201 and the rounding die 202, and a guide arc angle 205 is formed at the connection between the upper end surface of the rounding die 202 and the rounding concave surfaces 204. The shaping cylinder 203 is installed on the lower die base 42 and the piston rod penetrates into the round concave surface 204 of the round lower die 202 along the horizontal direction. When the bent fixing piece 19 is moved between the rounding lower die 201 and the rounding lower die 202, the piston rod of the shaping cylinder 203 is extended into the rounding lower die 202, and then the rounding lower die 201 presses the fixing piece 19 downward, so that the end of the fixing piece 19 is gradually squeezed into the rounding lower die 202 along the guide arc angle 205, and the fixing piece 19 is wound into the fixing ring 1 with a through hole in the middle. After rounding, the piston rod of the shaping cylinder 203 is moved out of the rounding lower die 202, so that the fixing ring 1 can be conveniently moved to the next mechanism for processing.
Referring to fig. 2, fig. 13, turnover mechanism 13 includes two turnover assemblies that set gradually along the direction of advance of material belt 17, the turnover assembly includes mould 131 on the upset that sets up in upper die base 41, set up in upset lower mould 132 of die holder 42, connect reset spring 133 in upset lower mould 132 downside and set up ejector pin 134 on die holder 42, upset lower mould 132 is located the upset and goes up under mould 131, reset spring 133's bottom links to each other with die holder 42, ejector pin 134 sets up along the width direction of material belt 17 with upset lower mould 132, and ejector pin 134 is located the one side that is close to solid fixed ring 1, wherein the interval of ejector pin 134 and upset lower mould 132 is greater than the interval of ejector pin 134 and upset lower mould 132 in the turnover assembly of keeping away from round subassembly 20. When the fixing ring 1 moves to the previous overturning assembly, the overturning upper die 131 in the overturning assembly moves downwards, so that the overturning upper die 131 and the overturning lower die 132 clamp the connecting rod 18, the overturning lower die 132 presses the return spring 133 downwards, and meanwhile, the ejector rod 134 abuts against the outer wall of the fixing ring 1 and pushes the fixing ring 1 upwards to overturn by 45 degrees. Similarly, when the turned-over fixing ring 1 moves to the next turning assembly, the turning upper die 131 in the next turning assembly moves downwards and compresses the connecting rod 18, the turning lower die 132 presses the return spring 133 downwards, the ejector rod 134 close to the return spring is abutted to the inner wall of the fixing ring 1, and the fixing ring 1 is pushed upwards to be turned over by 90 degrees, so that the through hole opening in the middle of the fixing ring 1 faces to the vertical direction.
Referring to fig. 2 and 14, the rounding mechanism 14 includes a rounding upper die 141 provided on the upper die base 41 and a rounding lower die 143 provided on the lower die base 42, and the rounding lower die 143 is located directly below the rounding upper die 141. The rounding upper die 141 is cylindrical, the middle part of the rounding upper die is provided with a relief hole 142, and the diameter of the top of the rounding lower die 143 is smaller than the inner diameter of the fixing ring 1. After the inverted fixing ring 1 is moved to the rounding mechanism 14, the rounding upper die 141 moves downwards and presses the fixing ring 1 into the abdicating hole 142, so that the fixing ring 1 is extruded into a regular circular ring, and the forming effect is good. In order to facilitate the detachment of the fixing ring 1 from the rounding upper die 141, the upper die base 41 may be correspondingly provided with an elastic member extending from the bottom to the offset hole 142, and in some embodiments, the elastic member may be a spring.
Referring to fig. 2 and 14, the inner punching hook mechanism 15 includes an upper punch 151 mounted on the upper die base 41 and a lower punch 152 mounted on the lower die base 42, wherein a punching hook 153 having a triangular cross section is provided at the bottom of the upper punch 151, a positioning post 154 and a sharp corner 155 located at both sides of the positioning post 154 are integrally formed at the top of the lower punch 152. The upper punch 151 cooperates with the lower punch 152 to punch the hook blocks 176 on the inner wall of the fixing ring 1 into a K-shape, thereby forming the K-shaped inner hook 2.
Referring to fig. 2 and 14, the stripping mechanism 16 includes a stripping upper die 161 mounted on the upper die base 41 and a stripping lower die 162 mounted on the lower die base 42, the stripping upper die 161 and the stripping lower die 162 are disposed along the width direction of the material tape 17, a stripping groove 163 for the fixing ring 1 to penetrate through is disposed on the bottom surface of the stripping upper die 161, and a material drop port 164 located right below the stripping groove 163 is disposed on the lower die base 42. When the upper stripper die 161 moves downwards, the end of the connecting rod 18 far away from the fixing ring 1 can be cut off, and the formed copper shell is discharged from the blanking port 164.
The embodiment of the application also discloses a forming process of the commutator copper shell, which comprises the following steps:
a pre-punching step, namely, punching a round hole 171 on the edge of the material belt 17 by matching the pre-punching upper die 51 and the pre-punching lower die 52;
a transverse punching step of punching and forming a plurality of hook grooves 175 parallel to each other on the positioning belt 173 by a horizontally moving transverse punching knife 71, wherein a hook block 176 for forming the inner hook 2 is formed between two adjacent hook grooves 175;
a trimming step, namely, punching and cutting the material belt 17 by using two trimming punches 81 which vertically move to form a plurality of mutually parallel ribs 177, wherein connecting strips 178 and fixing strips 179 are formed on parts, located on two sides of the ribs 177, of the material belt 17, one ends of the ribs 177 are connected with the fixing strips 179, the other ends of the ribs 178 are separated from the connecting strips, connecting rods 18 are formed on the parts, not cut, of the material belt 17, and two ends of each connecting rod 18 are respectively connected with the fixing strips 179 and the connecting strips 178;
a step of forming a hook angle 3, namely punching the end parts, far away from the fixing strip 179, of the ridge 177 and the connecting rod 18 to form a fillet by using a chamfering punch 91, and then matching the bending upper die 101 with the bending lower die 102 to enable the ridge 177 to be bent upwards by 90 degrees to form the hook angle 3;
a rounding step, namely cutting a long fixing strip 179 into a plurality of sections of fixing pieces 19 by a cutter 111, wherein each section of fixing piece 19 is connected with a connecting rod 18 and a plurality of hook angles 3; then the cut fixing piece 19 is extruded to form an arc block through a bending upper die 211 and a bending lower die 212 in each bending assembly 21 in sequence, then the piston rod of the shaping cylinder 203 extends to the rounding lower die 202, the arc fixing piece 19 can be gradually extruded to form the fixing ring 1 when the rounding upper die 201 moves downwards, and the piston rod of the shaping cylinder 203 is pulled out to form the rounding lower die 202 after rounding is finished;
turning, namely when the fixing ring 1 passes through a previous turning assembly, moving a turning upper die 131 downwards in the turning assembly to press the connecting rod 18 and pressing a return spring 133 downwards by a turning lower die 132, and meanwhile, pushing a push rod 134 against the outer wall of the fixing ring 1 and pushing the fixing ring 1 upwards to turn 45 degrees; when the turned fixing ring 1 moves to a next turning assembly, the turning upper die 131 and the turning lower die 132 of the turning assembly are firstly utilized to clamp the connecting rod 18, meanwhile, the ejector rod 134 close to the turning lower die 132 is abutted to the inner wall of the fixing ring 1, the fixing ring 1 is pushed upwards to be turned by 90 degrees, the connecting rod 18 is bent upwards by 90 degrees, and the opening of the through hole in the middle of the fixing ring 1 faces to the vertical direction;
a rounding step, namely moving the rounding upper die 141 downwards and extruding the fixing ring 1 into the abdicating hole 142, so that the fixing ring 1 is processed into a regular circular ring;
an inner hook punching step, namely punching the hook block 176 on the inner wall of the fixing ring 1 into a K-shaped inner hook 2 by matching the upper punch 151 and the lower punch 152;
and a stripping step, namely, the stripping upper die 161 moves downwards and cuts the end part of the connecting rod 18 far away from the fixing ring 1, and the molded commutator copper shell is discharged from the discharging port 164.
The implementation principle of the forming die and the process of the commutator copper shell in the embodiment of the application is as follows: when the commutator copper shell is produced, the commutator copper shell can be processed and molded in a set of die after working by a pre-punching mechanism 5, a transverse punching mechanism 7, a trimming mechanism 8, a chamfering mechanism 9, a bending mechanism 10, a cutting mechanism 11, a rounding mechanism 12, a turnover mechanism 13, a rounding mechanism 14, an inner hook punching mechanism 15 and a stripping mechanism 16 in sequence, and the commutator copper shell is simple to operate and high in production efficiency.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a forming die of commutator copper shell which characterized in that: comprises a die carrier (4) and a plurality of die carriers (4) which are sequentially arranged on the die carrier (4) along the advancing direction of a material belt (17)
The trimming mechanism (8) is used for punching and forming a plurality of mutually parallel ribs (177) in the middle of the material belt (17), connecting strips (178) and fixing strips (179) are formed on the portions, located on two sides of the ribs (177), of the material belt (17), one ends of the ribs (177) are connected with the fixing strips (179), and the connecting strips (178) are connected with the fixing strips (179) through connecting rods (18);
the bending mechanism (10) is used for bending the free end of the rib (177) upwards to form a hook angle (3);
the cutting mechanism (11) is used for cutting the fixing strip (179) into a plurality of sections of fixing pieces (19), and each section of fixing piece (19) is connected with a connecting rod (18) and a plurality of hook angles (3);
the rounding mechanism (12) is used for processing the fixing piece (19) into an annular fixing ring (1) step by step, and a through hole is formed in the middle of the fixing ring (1);
a turnover mechanism (13) for turning over the fixing ring (1) so that the opening of the through hole faces a vertical direction;
the inner hook punching mechanism (15) is used for punching and forming an inner hook (2) on the inner wall of the fixing ring (1);
and the stripping mechanism (16) is used for cutting the connecting rod (18) to separate the formed copper shell from the connecting strip (178).
2. The forming die of the commutator copper shell as claimed in claim 1, wherein: become circle mechanism (12) including the one side that becomes circle subassembly (20) and a plurality of crooked subassembly (21) that set gradually, it is located crooked subassembly (21) and is close to tilting mechanism (13) to become circle subassembly (20), crooked subassembly (21) are including crooked last mould (211) and crooked lower mould (212), the lower extreme of mould (211) is equipped with concave arc face (213) in the bending, the upper end of crooked lower mould (212) is equipped with convex arc face (214), and the internal diameter of concave arc face (213) reduces along the advancing direction in material area (17) in each crooked subassembly (21) in proper order, stationary blade (19) are gone up mould (211) and crooked lower mould (212) extrusion into the arcuation through the bending.
3. The forming die of the commutator copper shell as claimed in claim 2, wherein: the rounding assembly (20) comprises a rounding upper die (201), a rounding lower die (202) and a shaping cylinder (203), wherein rounding concave surfaces (204) with the same inner diameter are respectively formed on the end surfaces, close to the rounding upper die (201) and the rounding lower die (202), of the rounding upper die, and a piston rod of the shaping cylinder (203) is horizontally arranged and located in the rounding concave surfaces (204) on the lower side.
4. The forming die of the commutator copper shell as claimed in claim 1, wherein: tilting mechanism (13) are including two upset subassemblies that set gradually, the upset subassembly is including mould (131) in the upset, be located the upset under mould (131) upset lower mould (132), set up in upset lower mould (132) downside and reset spring (133) that link to each other with die carrier (4) and be located ejector pin (134) of upset lower mould (132) one side, ejector pin (134) and upset lower mould (132) distribute along the width direction of material area (17), wherein be close to ejector pin (134) of rounding subassembly (20) and be used for the outer wall of the solid fixed ring of butt (1) with the fixed ring of ejection (1), keep away from ejector pin (134) of rounding subassembly (20) and be used for the inner wall of the solid fixed ring of butt (1) with the fixed ring of ejection (1).
5. The forming die of the commutator copper shell as claimed in claim 1, wherein: still including locating tilting mechanism (13) and towards whole round mechanism (14) between inner hook mechanism (15), whole round mechanism (14) are including whole round last mould (141) and whole round lower mould (143), the top diameter of whole round lower mould (143) is less than the internal diameter of solid fixed ring (1), mould (141) are cylindric and the middle part is equipped with the hole of stepping down (142) that supplies solid fixed ring (1) to penetrate on the whole round.
6. A forming process of a commutator copper shell is characterized in that: comprises the following steps of (a) carrying out,
the method comprises the steps of trimming, namely, trimming a plurality of mutually parallel ribs (177) at the middle part of a material belt (17) by using a trimming mechanism (8), wherein connecting strips (178) and fixing strips (179) are formed at parts, positioned at two sides of the ribs (177), of the material belt (17), one ends of the ribs (177) are connected with the fixing strips (179), and the connecting strips (178) are connected with the fixing strips (179) through connecting rods (18);
a step of forming a hook angle, which is to bend the free end of the edge bar (177) upwards by 90 degrees by using a bending mechanism (10) to form a hook angle (3);
a rounding step, namely cutting the fixing strip (179) into a plurality of sections of fixing pieces (19) through a cutting mechanism (11), wherein each section of fixing piece (19) is provided with a connecting rod (18) and a plurality of hook angles (3); then, the fixing piece (19) is gradually extruded into the fixing ring (1) by utilizing a bending assembly (21) and a rounding assembly (20);
turning, namely turning the fixing ring (1) upwards through a turning assembly to enable an opening of a through hole in the middle of the fixing ring (1) to face the vertical direction;
an inner hook punching step, wherein an inner hook (2) is punched on the inner wall of the fixing ring (1) by using an inner hook punching mechanism (15);
and a stripping step, wherein the connecting rod (18) is cut by a stripping mechanism (16), so that the formed copper shell and the connecting strip (178) are separated.
7. The forming process of the commutator copper shell as claimed in claim 6, wherein: the method further comprises a transverse punching step which is arranged before the trimming step, namely a plurality of hook grooves (175) are formed in the material belt (17) in a transverse cutting mode through a horizontally moving transverse punching knife (71), the moving direction of the transverse punching knife (71) is parallel to the width direction of the material belt (17), and hook blocks (176) are formed between every two adjacent hook grooves (175).
8. The forming process of the commutator copper shell as claimed in claim 6, wherein: the step of forming the hook angle further comprises a chamfering process, namely, the end parts, far away from the fixing strip (179), of the edge strip (177) and the connecting rod (18) obtained in the step of trimming are processed into round corners, and the chamfering process is arranged before the process of bending the edge strip (177) to form the hook angle (3).
9. The forming process of the commutator copper shell as claimed in claim 6, wherein: the overturning step comprises a process of utilizing a mandril (134) to abut against the outer wall of the fixing ring (1) so as to overturn the fixing ring (1) by 45 degrees and a process of utilizing another mandril (134) to abut against the inner wall of the fixing ring (1) after the fixing ring is overturned by 45 degrees so as to overturn the fixing ring (1) by 90 degrees.
10. The forming process of the commutator copper shell as claimed in claim 6, wherein: the method also comprises a rounding step arranged after the turning step, namely, the fixing ring (1) is extruded into a regular circular ring through a rounding mechanism (14), and the inner hook punching step is carried out on the rounded fixing ring (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011406394.2A CN112642933B (en) | 2020-12-03 | 2020-12-03 | Forming die and process for commutator copper shell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011406394.2A CN112642933B (en) | 2020-12-03 | 2020-12-03 | Forming die and process for commutator copper shell |
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| CN112642933B CN112642933B (en) | 2022-09-02 |
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| EP0019472A2 (en) * | 1979-05-18 | 1980-11-26 | FRANKLIN & FREEMAN (LONDON) LIMITED | Manufacturing commutator shells for rotating electric machines |
| CN1403226A (en) * | 2002-06-17 | 2003-03-19 | 南昌大学 | Integral cold forging process of stepped tank commutator |
| CN201702270U (en) * | 2010-05-31 | 2011-01-12 | 梅州嘉和换向器有限公司 | Integral moulding mould of plate-rolling type reverser copper sleeve |
| CN202316692U (en) * | 2011-11-29 | 2012-07-11 | 广东韶配动力机械有限公司 | Automatic bush forming machine |
| CN203747208U (en) * | 2014-03-27 | 2014-07-30 | 浙江松普换向器有限公司 | Hook-type commutator product and segmentation die |
| CN203813179U (en) * | 2014-04-17 | 2014-09-03 | 深圳市凯中精密技术股份有限公司 | Copper shell with novel inner hook structure |
| CN111916963A (en) * | 2020-09-02 | 2020-11-10 | 浙江长城换向器有限公司 | Commutator copper shell and commutator production method |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0019472A2 (en) * | 1979-05-18 | 1980-11-26 | FRANKLIN & FREEMAN (LONDON) LIMITED | Manufacturing commutator shells for rotating electric machines |
| CN1403226A (en) * | 2002-06-17 | 2003-03-19 | 南昌大学 | Integral cold forging process of stepped tank commutator |
| CN201702270U (en) * | 2010-05-31 | 2011-01-12 | 梅州嘉和换向器有限公司 | Integral moulding mould of plate-rolling type reverser copper sleeve |
| CN202316692U (en) * | 2011-11-29 | 2012-07-11 | 广东韶配动力机械有限公司 | Automatic bush forming machine |
| CN203747208U (en) * | 2014-03-27 | 2014-07-30 | 浙江松普换向器有限公司 | Hook-type commutator product and segmentation die |
| CN203813179U (en) * | 2014-04-17 | 2014-09-03 | 深圳市凯中精密技术股份有限公司 | Copper shell with novel inner hook structure |
| CN111916963A (en) * | 2020-09-02 | 2020-11-10 | 浙江长城换向器有限公司 | Commutator copper shell and commutator production method |
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| Publication number | Publication date |
|---|---|
| CN112642933B (en) | 2022-09-02 |
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Address after: No. 2555 Tongpan Road, Shangwang Street, Rui'an City, Wenzhou City, Zhejiang Province, 325000 Patentee after: Zhejiang Greatwall Commutator Co.,Ltd. Address before: 325000 No. 511, Development Zone Avenue, Ruian Economic Development Zone, Wenzhou City, Zhejiang Province Patentee before: ZHEJIANG GREATWALL COMMUTATOR Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Forming Mold and Process for Commutator Copper Shell Effective date of registration: 20231124 Granted publication date: 20220902 Pledgee: Industrial Bank Co.,Ltd. Wenzhou Ruian sub branch Pledgor: Zhejiang Greatwall Commutator Co.,Ltd. Registration number: Y2023330002786 |