CN112397968A - Cutting ring forming mechanism and commutator copper shell forming method - Google Patents
Cutting ring forming mechanism and commutator copper shell forming method Download PDFInfo
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- CN112397968A CN112397968A CN202011410906.2A CN202011410906A CN112397968A CN 112397968 A CN112397968 A CN 112397968A CN 202011410906 A CN202011410906 A CN 202011410906A CN 112397968 A CN112397968 A CN 112397968A
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 129
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 129
- 239000010949 copper Substances 0.000 title claims abstract description 129
- 238000005520 cutting process Methods 0.000 title claims abstract description 36
- 230000007246 mechanism Effects 0.000 title claims description 25
- 238000000034 method Methods 0.000 title claims description 21
- 239000000463 material Substances 0.000 claims abstract description 66
- 238000001125 extrusion Methods 0.000 claims abstract description 51
- 230000010511 looping mechanism Effects 0.000 claims abstract description 3
- 238000003825 pressing Methods 0.000 claims description 10
- 239000003381 stabilizer Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 14
- 238000005452 bending Methods 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000007363 ring formation reaction Methods 0.000 description 3
- 238000009966 trimming Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/06—Manufacture of commutators
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Abstract
The application discloses a cutting and looping mechanism, which relates to the field of commutator copper shell production and comprises a primary extrusion assembly, an extrusion ring assembly and a material pushing assembly; the preliminary extrusion assembly comprises a first lower fixing block arranged on the lower die and a first upper fixing block arranged on the upper die; the first lower fixing block and the upper fixing block are used for extruding the copper strip and form a wavy die cavity with a concave middle part and two convex sides; the extrusion ring assembly comprises a second lower fixing block arranged on the lower die, a second upper fixing block arranged on the upper die and a central rod arranged on the lower die; the second lower fixed block, the second upper fixed block and the central rod form an annular die cavity; the material pushing assembly comprises a first sliding rod used for moving the copper material belt extruded by the primary extrusion assembly to the extrusion ring assembly. This application has and reduces whole mould part, and the copper casing production mould of being convenient for moves stable effect.
Description
Technical Field
The application relates to the field of commutator copper shell production, in particular to a cutting ring mechanism and a commutator copper shell forming method.
Background
In the production and processing process of a copper shell of the commutator, a copper material belt is driven by a driving source to move along the horizontal direction, and then transverse punching, trimming, chamfering, cutting and ring bending of a product are sequentially realized through the pressing of an upper die and a lower die.
Wherein, horizontal punching: cutting off the copper belt waste and forming an inner hook; trimming: cutting off waste copper belt materials and forming a hook part, wherein the hook part is used for winding the wire on the commutator in the later period; chamfering: the edges and corners of the hook part are cut off, so that the later-stage wound conducting wire is protected, and the conducting wire is prevented from being cut off; cutting: cutting the copper material belt; bending to form a ring: and gradually bending the cut copper material belt and forming an annular copper shell.
However, in the process of bending into a ring, a plurality of upper dies and lower dies are usually used to bend the copper strip gradually. In order to ensure that the copper shell outer ring is closer to circular, multiple bending processes are required, resulting in an increase in the number of parts of the entire mold, and increased instability of the entire mold during operation, which remains to be improved.
Disclosure of Invention
In order to reduce the quantity of mould in the bending ring, this application provides a cutting ring mechanism, has the effect that reduces the mould part, the copper casing production mould of being convenient for moves steadily.
The application provides a cutting ring forming mechanism, adopts following technical scheme:
a cutting and ring forming mechanism comprises a preliminary extrusion assembly, an extrusion ring assembly and a material pushing assembly; the preliminary extrusion assembly comprises a first lower fixing block arranged on the lower die and a first upper fixing block arranged on the upper die; the first lower fixing block and the upper fixing block are used for extruding a copper strip and forming a wavy die cavity with a concave middle part and convex two sides;
the extrusion ring assembly comprises a second lower fixing block arranged on the lower die, a second upper fixing block arranged on the upper die and a central rod arranged on the lower die; the second lower fixed block, the second upper fixed block and the central rod form an annular die cavity;
the material pushing assembly comprises a first sliding rod used for moving the copper material belt extruded by the primary extrusion assembly to the extrusion ring assembly.
By adopting the technical scheme, when the upper die and the lower die are assembled, the first upper fixing block and the first lower fixing block extrude the cut copper strip into the wave shape with the two convex sides and the middle concave part, and the copper strip is an arc-shaped part similar to an M shape at the moment. The arc-shaped part is pushed to a position between the second lower fixing block and the second upper fixing block through the first sliding rod, and then the arc-shaped part forms a ring-shaped copper shell through die assembly. Adopt the cutting ring forming mechanism of this application, compare originally the mode that multiunit mould progressively carries out the bending ring to the copper material area of level form and has the effect that reduces the mould part, the copper shell production mould of being convenient for moves stably, has still reduced work step, has improved work efficiency.
Optionally, a semi-arc-shaped pressing block is arranged at one end of the first sliding rod, which is used for pushing the copper material belt; when the semi-arc-shaped pressing block pushes the copper strip, the semi-arc-shaped pressing block is positioned above the middle concave part of the copper strip.
Through adopting above-mentioned technical scheme, first pole of sliding is promoting the in-process of copper material area (arc spare), and half arc briquetting is located the top of the middle depressed part in copper material area for the copper material area is more stable at the removal in-process.
Optionally, the pushing assembly further includes a second sliding rod slidably disposed on the first lower fixing block, and the second sliding rod is located on one side of the central rod and used for ejecting the annular copper shell.
By adopting the technical scheme, after the upper die and the lower die are separated, the second sliding rod slides to eject the copper shell out of the die.
Optionally, the lower end of the first upper fixing block is provided with a tip end portion for cutting the copper material belt.
Through adopting above-mentioned technical scheme, go up mould and lower mould when the compound die, the first fixed block that goes up moves towards the first fixed block that falls, and at this in-process, the pointed end directly cuts the copper material area, and the copper material area after the cutting directly lies in on the first fixed block and the second between the fixed block in order to supply to bend into the arc piece, only with once compound die alright realize the cutting in copper material area and bend into the arc piece, have the effect that improves production efficiency and reduction mould part.
Optionally, the central rod is fixedly provided with a stabilizer bar which is matched with the inner wall of the copper material belt to limit the copper material belt to move only along the axial lead direction of the central rod.
By adopting the technical scheme, the inner wall of the copper shell is the inner wall of the copper shell in which the copper strip is formed into a ring, the channel is preset in the inner wall of the copper strip, and the cooperation of the stabilizer bar and the channel limits the copper strip to move only along the axial lead direction of the central rod, thereby being beneficial to the quality of the copper shell forming in the subsequent extrusion ring forming step.
Optionally, the second lower fixing block is slidably connected with an inner lower sliding block, and an inner elastic piece for supporting the inner lower sliding block is arranged on the second lower fixing block; the center rod and the inner lower sliding block are detachably connected and fixed, and the center rod is connected to the first lower fixing block in a sliding mode.
By adopting the technical scheme, when the die is closed, the second upper fixed block moves towards the second lower fixed block, the central rod and the inner lower sliding block move downwards, and the inner elastic piece deforms under stress; when the mold is separated, the central rod and the inner sliding block move upwards under the action force of the inner elastic part, so that the later-stage demolding of the copper shell is facilitated.
Optionally, the second lower fixing block is slidably connected with an outer lower sliding block, and an outer elastic member for supporting the outer lower sliding block is arranged on the second lower fixing block; and the outer lower sliding block supports the part of the central rod, which is far away from the first lower fixed block.
Through adopting above-mentioned technical scheme, when the compound die, fixed block direction removal under to the second on the second, interior lower sliding block and outer lower sliding block provide the power that supports to the lower tip that is close both ends of well core rod, and the atress of well core rod of being convenient for is even, plays the effect of protecting well core rod.
In order to reduce the quantity of mould in the bending ring, improve the stability of whole mould when the operation, this application still provides a cutting ring mechanism, has the reduction part, the stable effect of copper shell production mould operation of being convenient for.
The forming method of the commutator copper shell adopts the following technical scheme:
a commutator copper shell forming method is characterized by comprising the following steps:
a primary extrusion step: after the upper die and the lower die are closed, a wave-shaped die cavity with a concave middle part and convex two sides is formed, and the chamfered copper material belt is extruded into an arc-shaped piece through the closing of the upper die and the lower die;
extrusion and ring forming: the middle concave part of the arc-shaped part is abutted by the central rod, the two sides of the arc-shaped part are extruded to form the convex parts, and the arc-shaped part is pressed into the annular copper shell through the die assembly of the upper die and the lower die.
Through adopting above-mentioned technical scheme, the copper material area after will chamfering is earlier through preliminary extrusion step, extrudees into the wave shape that both sides are protruding, the centre is sunken, the copper material area at this moment is the arc piece of approximate M shape, then the extrusion cyclization step direct extrusion becomes the copper casing of loop type, above-mentioned step through twice compound die alright realize extruding the copper material area of horizontally into the copper casing of loop type, have the reduction part, the stable effect of copper casing production mould operation of being convenient for.
Optionally, the method further includes:
cutting: the copper material belt is cut through the first upper fixing block, and the cut copper material belt is located between the upper die and the lower die which are not matched with the dies yet at the primary extrusion step.
Through adopting above-mentioned technical scheme, can realize cutting the copper material area and extrude the copper material area and become the arc piece once the compound die, have the effect that reduces construction steps and part, still improve production efficiency.
Optionally, the method further includes:
material pushing step: pushing the arc-shaped piece subjected to extrusion forming in the primary extrusion step to a position between an upper die and a lower die in the extrusion ring forming step, and synchronously demolding the copper shell in the extrusion ring forming step.
By adopting the technical scheme, the number of integral parts of the die is reduced, the stability of the integral motion of the die is improved, and the production efficiency is improved.
In summary, the present application has the following beneficial effects:
1. the first upper fixing block moves towards the first lower fixing block, the cut copper strip is extruded into arc-shaped pieces with two convex sides and a wavy middle concave part, the lower end of the middle concave part of the arc-shaped piece is abutted against the central rod, and the convex parts on the two sides of the arc-shaped piece are extruded by the second upper fixing block, so that the arc-shaped piece is extruded into a ring and a copper shell is obtained;
2. in the process that the first upper fixing block moves towards the first lower fixing block, the copper material belt is cut by the tip part, then the cut copper material belt is extruded into a wavy arc-shaped piece, the functions are realized through one-time die assembly, and the device has the effects of being simple in structure and reducing die parts.
Drawings
FIG. 1 is a partial schematic view of a cut-to-loop mechanism of the present application;
FIG. 2 is a schematic diagram of a preliminary extrusion assembly of the cutting-looping mechanism of the present application as it extrudes a copper strip into an arcuate member;
FIG. 3 is an exploded view of a portion of the structure of the cut-to-loop mechanism of the present application;
FIG. 4 is a schematic view of the present application showing a first sliding bar pushing arc highlighted in the cut-to-loop mechanism;
FIG. 5 is a front view of the cut-to-loop mechanism of the present application when clamped;
FIG. 6 is a schematic view of a partial structure of the cutting ring mechanism of the present application after the second upper fixing block is hidden;
FIG. 7 is a schematic cross-sectional view of a portion of the present invention cut-to-ring mechanism highlighting the inner lower slider and the inner resilient member;
FIG. 8 is a schematic sectional view of a portion of the present invention cut-and-loop mechanism showing the outer slide down block and the outer elastic member.
Reference numerals: 1. preliminary pressing the assembly; 2. extruding to form a ring component; 3. a material pushing assembly; 4. a first lower fixing block; 5. a first upper fixed block; 6. a wave-shaped die cavity; 7. a tip portion; 8. an arcuate member; 9. a first slide bar; 10. a second slide bar; 11. semi-arc shaped pressing blocks; 12. a second lower fixed block; 13. a second upper fixed block; 14. a center pole; 15. a ring-shaped mold cavity; 16. a vertical chute; 17. an inner chute; 18. an inner lower sliding block; 19. an inner elastic member; 20. an outer chute; 21. an outer lower slider; 22. an outer elastic member; 23. a copper shell; 24. a stabilizer bar.
Detailed Description
The embodiment of the application discloses a cutting ring mechanism, and with reference to fig. 1, the cutting ring mechanism comprises a primary extrusion assembly 1, an extrusion ring assembly 2 and a pushing assembly 3.
Referring to fig. 1 and 2, the preliminary extrusion assembly 1 includes a first lower fixing block 4 relatively fixedly disposed on the lower die and a first upper fixing block 5 relatively fixedly disposed on the upper die. When the upper die and the lower die are closed, the first upper fixing block 5 moves towards the first lower fixing block 4 and forms a wavy die cavity 6 which is used for placing the copper material belt, is concave in the middle and is convex at two sides.
Referring to fig. 2 and 3, a tip portion 7 is integrally formed at the left side of the first upper fixing block 5, the lower end of the tip portion 7 is a tip, a copper strip enters between the first upper fixing block 5 and the first lower fixing block 4 from the left side in the die, the first upper fixing block 5 moves towards the first lower fixing block 4 in the die assembly process, the tip portion 7 cuts the copper strip firstly, the cut copper strip is directly located between the first upper fixing block 5 and the first lower fixing block 4, and the upper die and the lower die are continuously assembled and extrude the cut copper strip into a wavy arc-shaped piece 8 with a concave middle and convex two sides. The cutting and bending of the copper material belt into the arc-shaped piece 8 can be realized only by once die assembly, and the effects of improving the production efficiency and reducing die parts are achieved.
Referring to fig. 3, the pushing assembly 3 includes a first sliding rod 9 and two second sliding rods 10. Wherein, the first sliding rod 9 is arranged on the lower die and is arranged in a sliding way relative to the first lower fixing block 4. After the first upper fixing block 5 and the first lower fixing block 4 are assembled once, the first upper fixing block 5 and the first lower fixing block 4 are separated from each other, namely the upper die and the lower die are separated, and the first sliding rod 9 can move between the first upper fixing block 5 and the first lower fixing block 4 and push the arc-shaped part 8, so that the arc-shaped part 8 moves to the position of the extrusion ring assembly 2.
Referring to fig. 4, the first sliding rod 9 is used for pushing one end of the copper strip (arc-shaped member 8) to integrally form a semi-arc-shaped pressing block 11. First slide bar 9 is promoting the in-process of copper material area (arc 8), and half arc briquetting 11 is located the top of the middle depressed part in copper material area for the copper material area is more stable at the removal in-process.
Referring to fig. 5, the extrusion ring assembly 2 includes a second lower fixing block 12 fixedly installed at the lower die, a second upper fixing block 13 fixedly installed at the upper die, and a center rod 14. And the opposite surfaces of the second lower fixing block 12 and the second upper fixing block 13 are provided with semi-arc grooves. After the dies are closed, the second lower fixed block 12, the second upper fixed block 13 and the central rod 14 form a ring-shaped die cavity 15.
Referring to fig. 2 and 6, the first lower fixing block 4 is provided with a vertical sliding groove 16 into which an end portion of the central rod 14 is inserted, one end of the central rod 14 is inserted into the vertical sliding groove 16 of the first lower fixing block 4, and the arrangement of the vertical sliding groove 16 limits the central rod 14 to move only in the vertical direction.
Referring to fig. 6 and 7, the second lower fixing block 12 is provided with an inner sliding groove 17, the inner sliding groove 17 is provided with an inner lower sliding block 18 in a sliding manner, and the second lower fixing block 12 is further provided with an inner elastic member 19 positioned in the inner sliding groove 17. The inner lower sliding block 18 is fixed with the central rod 14 by a screw in a detachable connection. The inner elastic member 19 is selected as a spring, and the inner elastic member 19 supports the inner lower sliding block 18, so that the central rod 14 is supported. When the die is closed, the second upper fixing block 13 moves towards the second lower fixing block 12, the central rod 14 and the inner lower sliding block 18 move downwards, and the inner elastic piece 19 is stressed and deformed; during mold splitting, the central rod 14 and the inner slide block move upwards under the action of the inner elastic piece 19, so that the later demolding of the copper shell 23 is facilitated.
Referring to fig. 6 and 8, the second lower fixing block 12 is further provided with an outer sliding groove 20, an outer lower sliding block 21 is slidably disposed in the outer sliding groove 20, and an outer elastic member 22 disposed in the outer sliding groove 20 is further disposed in the second lower fixing block 12. The inner elastic piece 19 is selected as a spring, the outer elastic piece 22 supports the outer lower sliding block 21, and the outer lower sliding block 21 is located at the lower end of the part, far away from the first lower fixing block 4, of the central rod 14, so that the part, far away from the first lower fixing block 4, of the central rod 14 is supported. The arrangement of the outer lower sliding block 21 facilitates uniform stress of the central rod 14, and plays a role in protecting the central rod 14.
Referring to fig. 3, the two second sliding rods 10 are slidably disposed on the first lower fixing block 4 and located on two sides of the central rod 14, after the second lower fixing block 12 and the second upper fixing block 13 are mutually extruded, the arc-shaped member 8 is extruded into the annular copper shell 23, after the second lower fixing block 12 and the second upper fixing block 13 are mutually separated, the central rod 14 moves upward and resets under the action of the inner elastic member 19, and by driving the two second sliding rods 10, one end of the second sliding rod 10 pushes against the side wall of the copper shell 23 and pushes the copper shell 23 outward out of the central rod 14, so that the copper shell 23 is demolded.
It should be mentioned that the first slide lever 9 and the two second slide levers 10 can be moved synchronously by connecting one and the same drive element. For example, the cylinder is adopted, the first sliding rod 9 and the two second sliding rods 10 are fixedly connected with the piston rod of the cylinder relatively, and after the die is separated, the cylinder can work to push the arc-shaped part 8 to the position between the second upper fixing block 13 and the second lower fixing block 12, and the copper shell 23 is demoulded simultaneously.
Referring to fig. 3 and 5, the center rod 14 is fixedly provided with a stabilizer bar 24 extending in the axial direction of the center rod 14. The channel has been preset to copper material area inner wall, and copper material area inner wall is the inner wall of copper shell 23 that the copper material area becomes the ring, and stabilizer bar 24 and channel cooperation have restricted that copper material area (arc 8) can only follow the removal of central rod 14 axial lead direction, play the effect of stabilizing arc 8, still are favorable to the fashioned quality of copper shell 23 in the follow-up extrusion cyclization step.
The concrete working condition effects are as follows:
the copper material belt enters between the first upper fixing block 5 and the first lower fixing block 4. The first upper fixing block 5 moves towards the first lower fixing block 4 and extrudes (closes) the die, and the first upper fixing block 5 cuts the copper material belt and extrudes the copper material belt into an arc-shaped piece 8. The first upper fixing block 5 and the first lower fixing block 4 are separated from each other (split mold). The first sliding rod 9 pushes the arc-shaped part 8 and moves the arc-shaped part 8 to the central rod 14 between the second upper fixed block 13 and the second lower fixed block 12. The second upper fixing block 13 moves towards the second lower fixing block 12 and extrudes (closes) the second upper fixing block 13, the second lower fixing block 12 and the central rod 14, and the arc-shaped piece 8 is extruded into an annular copper shell 23 through the matching of the second upper fixing block 13, the second lower fixing block 12 and the central rod 14. The second upper fixing block 13 and the second lower fixing block 12 are separated (demolded). The second sliding rod 10 pushes the copper shell 23 and realizes demoulding.
It should be mentioned that the cutting and looping mechanism of the present application can be used for the continuous manufacture of copper shell 23 products, in which the extrusion of a copper strip into an arc-shaped piece 8 and the extrusion of another arc-shaped piece 8 into a copper shell 23 of annular shape are simultaneously achieved in a single die assembly.
The utility model provides a mode that multiunit mould progressively carries out the bending to the copper material area of level form and encircles before the cutting cyclization mechanism compares has the effect that reduces the mould part, and the copper shell 23 production mould of being convenient for moves stably, has still reduced work step, has improved work efficiency.
The application also discloses a commutator copper shell forming method, which comprises the following steps:
and (3) transverse punching: cutting off the copper belt waste and forming an inner hook;
trimming: cutting off waste copper belt materials and forming a hook part, wherein the hook part is used for winding the wire on the commutator in the later period;
chamfering: the edges and corners of the hook part are cut off, so that the later-stage wound conducting wire is protected, and the conducting wire is prevented from being cut off;
cutting: and cutting the copper material strip.
A primary extrusion step: after the upper die and the lower die are assembled, a wave-shaped die cavity 6 with a concave middle part and convex two sides is formed, and the chamfered and cut copper material belt is extruded into an arc-shaped piece 8 through the assembly of the upper die and the lower die.
Extrusion and ring forming: the lower part of the middle sunken part of the arc-shaped part 8 is abutted by the central rod 14, the two side raised parts of the arc-shaped part 8 are extruded, the two raised parts rotate and surround the central rod 14, and the arc-shaped part 8 is pressed into an annular copper shell 23 through the die assembly of the upper die and the lower die.
Material pushing step: pushing the arc-shaped part 8 which is extruded and formed in the primary extrusion step to a position between the upper die and the lower die in the extrusion ring forming step, and synchronously demoulding the copper shell 23 in the extrusion ring forming step.
Wherein, adopt first upper fixed block 5 to carry out the cutting to copper material area in the cutting step, the copper material area after the cutting is located between first upper fixed block 5 and the first lower fixed block 4 in preliminary extrusion step, and the copper material area of being cut is for the extrusion into arc 8. Cutting the copper material belt and extruding the copper material belt into the arc-shaped part 8 can be realized by once die assembly, so that the effect of reducing construction steps and parts is achieved, and the production efficiency is also improved.
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. A cutting and looping mechanism is characterized in that: comprises a preliminary extrusion component (1), an extrusion ring component (2) and a material pushing component (3); the preliminary extrusion assembly (1) comprises a first lower fixing block (4) arranged on the lower die and a first upper fixing block (5) arranged on the upper die; the first lower fixing block (4) and the upper fixing block are used for extruding a copper strip and forming a wavy die cavity (6) with a concave middle part and two convex sides;
the extrusion ring assembly (2) comprises a second lower fixing block (12) arranged on the lower die, a second upper fixing block (13) arranged on the upper die and a central rod (14) arranged on the lower die; a ring-shaped die cavity (15) is formed by the second lower fixing block (12), the second upper fixing block (13) and the central rod (14);
the material pushing assembly (3) comprises a first sliding rod (9) which is used for moving the copper material belt extruded by the primary extrusion assembly (1) to the extrusion ring assembly (2).
2. The cut-and-loop mechanism as recited in claim 1, wherein: one end of the first sliding rod (9) used for pushing the copper material belt is provided with a semi-arc-shaped pressing block (11); when the semi-arc-shaped pressing block (11) pushes the copper strip, the semi-arc-shaped pressing block (11) is positioned above the middle concave part of the copper strip.
3. The cut-and-loop mechanism as recited in claim 1, wherein: the pushing assembly (3) further comprises a second sliding rod (10) which is slidably arranged on the first lower fixing block (4), and the second sliding rod (10) is located on one side of the central rod (14) and used for ejecting the annular copper shell (23).
4. The cut-and-loop mechanism as recited in claim 1, wherein: the lower end of the first upper fixing block (5) is provided with a tip part (7) for cutting a copper material belt.
5. The cut-and-loop mechanism as recited in claim 1, wherein: and the central rod (14) is fixedly provided with a stabilizer bar (24) which is matched with the inner wall of the copper material belt to limit the copper material belt to move only along the axial lead direction of the central rod (14).
6. The cut-and-loop mechanism as recited in claim 1, wherein: the second lower fixing block (12) is connected with an inner lower sliding block (18) in a sliding manner, and an inner elastic piece (19) used for supporting the inner lower sliding block (18) is arranged on the second lower fixing block (12); the center rod (14) is detachably connected and fixed with the inner lower sliding block (18), and the center rod (14) is connected to the first lower fixing block (4) in a sliding mode.
7. The cut-and-loop mechanism as recited in claim 6, wherein: the second lower fixing block (12) is connected with an outer lower sliding block (21) in a sliding manner, and an outer elastic piece (22) used for supporting the outer lower sliding block (21) is arranged on the second lower fixing block (12); and the outer lower sliding block (21) supports the part of the central rod (14) far away from the first lower fixed block (4).
8. A commutator copper shell forming method is characterized by comprising the following steps:
a primary extrusion step: after the upper die and the lower die are closed, a wave-shaped die cavity (6) with a concave middle part and convex two sides is formed, and the chamfered copper material belt is extruded into an arc-shaped piece (8) through the closing of the upper die and the lower die;
extrusion and ring forming: the middle concave part of the arc-shaped part (8) is abutted through the central rod (14), the two sides of the arc-shaped part (8) are extruded to form the convex parts, and the arc-shaped part (8) is pressed into the annular copper shell (23) through the die assembly of the upper die and the lower die.
9. The molding method of the commutator copper shell according to claim 8, further comprising:
cutting: the copper material belt is cut through the first upper fixing block (5), and the cut copper material belt is located between the upper die and the lower die which are not matched with the dies at the primary extrusion step.
10. The molding method of the commutator copper shell according to claim 8, further comprising:
material pushing step: pushing the arc-shaped piece (8) which is extruded and formed in the primary extrusion step to a position between an upper die and a lower die in the extrusion ring forming step, and synchronously demoulding the copper shell (23) in the extrusion ring forming step.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011410906.2A CN112397968B (en) | 2020-12-03 | 2020-12-03 | Cutting ring forming mechanism and commutator copper shell forming method |
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|---|---|---|---|
| CN202011410906.2A CN112397968B (en) | 2020-12-03 | 2020-12-03 | Cutting ring forming mechanism and commutator copper shell forming method |
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| CN112397968B CN112397968B (en) | 2022-07-15 |
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| CN104174693A (en) * | 2014-08-07 | 2014-12-03 | 浙江兄弟之星汽配有限公司 | Board round tube molding method and board round tube molding mould |
| CN205289438U (en) * | 2015-10-27 | 2016-06-08 | 亿和精密工业（苏州）有限公司 | Edge rolling mould |
| CN106341011A (en) * | 2016-11-23 | 2017-01-18 | 苏州工业职业技术学院 | Circular compression method for motor enclosure |
| CN205945459U (en) * | 2016-08-15 | 2017-02-08 | 台州市天时利精密模具有限公司 | Motor housing forming die |
| CN206500469U (en) * | 2017-02-23 | 2017-09-19 | 西安竹乐网络科技有限公司 | A kind of ring bending mould |
| CN107413952A (en) * | 2017-07-05 | 2017-12-01 | 芜湖市成冉精密模具有限公司 | A kind of blanking edge rolling integrative-structure |
| CN207086725U (en) * | 2017-09-05 | 2018-03-13 | 嘉善亿腾自动化机械制造有限公司 | The station edge rolling mould of aluminium base cam sleeve three |
-
2020
- 2020-12-03 CN CN202011410906.2A patent/CN112397968B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU479531A1 (en) * | 1973-10-22 | 1975-08-05 | Предприятие П/Я В-8772 | Stretch Punch with Elastic Punch |
| SU1590160A1 (en) * | 1988-06-20 | 1990-09-07 | Центральный научно-исследовательский и проектно-конструкторский институт морского флота | Method of producing hollow articles and die for effecting same |
| CN2268591Y (en) * | 1996-06-13 | 1997-11-26 | 李日华 | Pre-curled mould for pipe of bend |
| CN2754767Y (en) * | 2004-12-07 | 2006-02-01 | 嘉善长盛滑动轴承有限公司 | Four position punching mould |
| CN104174693A (en) * | 2014-08-07 | 2014-12-03 | 浙江兄弟之星汽配有限公司 | Board round tube molding method and board round tube molding mould |
| CN205289438U (en) * | 2015-10-27 | 2016-06-08 | 亿和精密工业（苏州）有限公司 | Edge rolling mould |
| CN205945459U (en) * | 2016-08-15 | 2017-02-08 | 台州市天时利精密模具有限公司 | Motor housing forming die |
| CN106341011A (en) * | 2016-11-23 | 2017-01-18 | 苏州工业职业技术学院 | Circular compression method for motor enclosure |
| CN206500469U (en) * | 2017-02-23 | 2017-09-19 | 西安竹乐网络科技有限公司 | A kind of ring bending mould |
| CN107413952A (en) * | 2017-07-05 | 2017-12-01 | 芜湖市成冉精密模具有限公司 | A kind of blanking edge rolling integrative-structure |
| CN207086725U (en) * | 2017-09-05 | 2018-03-13 | 嘉善亿腾自动化机械制造有限公司 | The station edge rolling mould of aluminium base cam sleeve three |
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| Publication number | Publication date |
|---|---|
| CN112397968B (en) | 2022-07-15 |
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Denomination of invention: A method for cutting into a ring mechanism and forming a copper shell of a commutator Effective date of registration: 20231124 Granted publication date: 20220715 Pledgee: Industrial Bank Co.,Ltd. Wenzhou Ruian sub branch Pledgor: Zhejiang Greatwall Commutator Co.,Ltd. Registration number: Y2023330002786 |
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