A commutator and production equipment and production process

Abstract

A commutator and production equipment and production process, the commutator comprises a bakelite powder body, a spring liner, a commutator segment, and a reinforcement ring. The commutator segment is provided with a fastening strip for locking the reinforcement ring, and the spring liner is provided with a reinforcement strip and a fastening groove, thereby improving the overall strength of the commutator; the production equipment comprises a workbench, a tight ring tray, and a material chamber, the workbench is provided with a reinforcement ring station, a demoulding station, a sprue breaking station, a heating device, and an injection molding station, and a production process for producing the above-mentioned commutator using the production equipment, the process steps comprising: installing the commutator segment, expanding the commutator segment reinforcement ring, preheating the commutator segment, installing the tight ring tray material chamber, injection molding of the commutator, separating the tight ring tray material chamber, extracting the commutator waste, and demoulding the commutator, and has the advantages of small layout space, low work intensity, high work efficiency, low production cost, convenient and fast mold change, and convenient commutator production.

Description

Technical Field

[0001] The present invention relates to a commutator, in particular to a commutator and production equipment and a production process. Background Art

[0002] Commutators are widely used in power tools and automotive motors. During production, upper and lower reinforcement rings are usually used to reinforce the commutator segments, and spring bushings are set on the inside of the bakelite powder body of the commutator to improve the mechanical strength and overspeed performance of the commutator. In addition, there is a very important process in the commutator manufacturing process called the commutator injection molding process. The commutator injection molding process is to complete the combination of the commutator copper feet, spring bushings and bakelite powder by pressing bakelite powder. There are many related auxiliary processes before and after the commutator injection molding process, and these processes consume a lot of working hours. The operation is complicated and loose, the production efficiency is low, and the labor intensity of workers is high. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies of the prior art and to provide a commutator, production equipment and production process with high mechanical strength, strong overspeed performance, simple production process flow, high production efficiency and low labor intensity.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a commutator, including a bakelite powder main body, a spring bushing is provided in the bakelite powder main body, and a plurality of commutator segments are evenly embedded in the outer ring of the bakelite powder main body, the commutator segments include copper feet and bosses, and extension strips are provided on both sides of the copper feet of the commutator segments, and a reinforcement groove is formed between the extension strip and the copper feet of the commutator segments, and a reinforcement ring is provided in the reinforcement groove, and a fastening strip for locking the reinforcement ring is provided on the end of the extension strip facing the reinforcement groove; a plurality of reinforcement strips are evenly provided on the surface of the boss side of the spring bushing facing the commutator segments along the spiral direction of the spring bushing, and the spring bushing is provided with fastening grooves on both sides of the reinforcement strip.

[0005] Preferably, five reinforcement strips are evenly arranged around the spiral direction of the spring bushing on the surface of the boss side facing the commutator segment.

[0006] A commutator production equipment includes a workbench arranged in a semi-enclosed shape, a tight ring tray for fixing the commutator segments, and a material chamber. The middle of the workbench is provided with a strengthening ring station, a demolding station, and a sprue breaking station in sequence. The workbench is provided with a lifting device relative to the demolding station. An injection molding station is provided on the right side of the workbench. The workbench is provided with a heating device for preheating the commutator segments at the corner between the sprue breaking station and the injection molding station; the tight ring tray includes a tray body, and the tray body is also provided with a plurality of limiting holes for fixing the commutator segments. The material chamber is provided with injection holes relative to the limiting holes of the tray body.

[0007] Preferably, fixed slides for placing the tight ring pallet are provided on both sides of the expansion and reinforcement ring station, and slide guide columns and slide rods are respectively provided on the upper and lower sides of the fixed slide; a lower pad A is provided on the slide rod, and a driving cylinder is connected to the lower side of the lower pad A, and a lower fixed plate and a lower positioning plate are provided on the upper side of the lower pad A in sequence, and the lower pad A, the lower fixed plate and the lower positioning plate are connected by positioning pins, and a lower guide column is provided on the lower guide column, and a lower pressure block fixing plate is provided on the lower pressure block fixing plate. There are several lower pressure blocks, a lower push block is provided in the lower pressure block, and a lower spring is sleeved between the lower push block and the lower positioning plate; an upper pressure block fixing plate is provided on the slide guide column, and a pull rod fixing block for fixing the upper pressure block fixing plate is also provided on the slide guide column, an upper pad A is provided on the upper side of the upper pressure block fixing plate, a driving cylinder is connected to the upper side of the upper pad A, a number of upper pressure blocks are provided on the upper pressure block fixing plate, an upper push block is provided in the upper pressure block, an upper spring is sleeved between the upper push block and the upper pad A, and an upper guide column is also provided on the upper pressure block fixing plate.

[0008] Preferably, the demolding station is provided with a lower pad B, an intermediate pad B and an upper pad B on both sides from bottom to top, and the spacing between the lower pad B, the intermediate pad B and the upper pad B on both sides of the demolding station increases successively, the demolding station is provided with a cover plate on the upper side of the upper pad B, the cover plate is provided with a plurality of through holes, the upper surface of the cover plate is provided with a pressure plate for fixing the cover plate, the demolding station is provided with a foot feeding plate B on the lower side of the cover plate, the lower side of the foot feeding plate B is connected with a driving cylinder, the foot feeding plate B is provided with a plurality of foot feeding B and foot feeding plate guide columns, the demolding station is provided with a reversing piece feeding plate on the upper side of the cover plate, the upper side of the reversing piece feeding plate is connected with a driving cylinder, and the lower surface of the reversing piece feeding plate is provided with a plurality of reversing piece top columns; the lifting device includes a lifting frame, the lifting frame is provided with a lifting guide column, the lifting guide column is provided with a lifting plate, and the lifting frame is also provided with a lifting cylinder for driving the lifting plate to lift.

[0009] As a preference, both sides of the blasting station are provided with a lower pad C, an intermediate pad C, an upper pad C, and a gusset plate in sequence from bottom to top; a positioning plate is provided between the intermediate pads C on both sides of the blasting station, the positioning plate is clamped between the lower pad C and the upper pad C, and a material chamber support assembly and a tight ring tray limiting assembly are staggered between the upper pad C and the gusset plate; an upper slide guide column is provided on the upper slide guide column, an upper slide is provided on the upper slide, a foot feeding plate C is embedded in the upper slide, a driving cylinder is connected to the foot feeding plate C, and the lower side of the foot feeding plate C is provided. There are several feed feet C; the lower pad C and the upper pad C are provided with lower slide groove guide columns, the lower slide groove guide columns pass through the middle pad C and the positioning plate, the lower slide groove guide columns are provided with a lower slide groove, the lower side of the lower slide groove is connected to the connecting pad, the lower side of the connecting pad is connected to the driving cylinder, the lower slide groove is embedded with a feed plate, the needle feed plate is embedded with a ejector pin, a ejector chamber guide column, and a needle feed plate guide column, the positioning plate is provided with an ejector pin through hole, an ejector chamber guide column through hole, and a needle feed plate guide column through hole for the ejector pin, the ejector chamber guide column, and the needle feed plate guide column to pass through respectively.

[0010] Preferably, the material chamber support assembly includes a small support plate arranged between the upper pad C and the buckle plate, the end of the small support plate is provided with a material chamber support block, the lower surface of the material chamber support block is provided with a material chamber positioning inclined surface, the inner upper end of the buckle plate is provided with a material chamber positioning block matching the material chamber support block, a material chamber is placed between the material chamber support block and the material chamber positioning block, the upper pad C and the outer side of the buckle plate relative to the small support plate are provided with a small spring buckle plate, and a small reset spring is provided between the small spring buckle plate and the small support plate; the tight ring tray The limiting assembly includes a large support plate arranged between the upper pad C and the buckle plate, the end of the large support plate is provided with a tight ring tray limiting block, the upper surface of the tight ring tray limiting block is provided with a material chamber passing inclined surface, the inner lower end of the upper pad C is provided with a tight ring tray supporting block matching the tight ring tray limiting block, the tight ring tray is placed between the tight ring tray limiting block and the tight ring tray supporting block, the upper pad C and the buckle plate are provided with a large spring buckle plate at the outer side relative to the large support plate, and a large reset spring is provided between the large spring buckle plate and the large support plate.

[0011] Preferably, injection guide pillars are provided on both sides of the injection molding station, and the upper and lower ends of the injection guide pillars are respectively covered with an upper template and a lower template, the upper side of the upper template is connected to a driving cylinder, and the lower side of the upper template is provided with a material chamber pressure block matching the material chamber, the lower side of the lower template is connected to a driving cylinder, and a lower pressure head for injection spring bushing is embedded on the lower template, and the injection molding station is provided with an injection slide groove for placing the tight ring tray and the material chamber between the upper template and the lower template.

[0012] Preferably, a waste discharge hole is provided on the left side of the workbench, and a handle is provided on the side wall of the tray body.

[0013] A production process for a commutator comprises the following steps:

[0014] S1. Place the commutator segment in the limiting hole of the tightening ring tray, and place a reinforcement ring on the upper side of the commutator segment. At the same time, place the reinforcement ring on the push-down block of the reinforcement ring expansion station;

[0015] S2. Place the fastening tray on the fixed slide of the reinforcement ring expansion station, and at the same time drive the driving cylinder on the lower side of the lower pad A and the driving cylinder on the upper side of the upper pad A. Under the drive of the driving cylinder, the lower pad A moves upward through the lower pressing block to press the reinforcement ring on the lower push block onto the commutator segment on the tight ring tray. Under the drive of the driving cylinder, the upper pad A moves downward through the upper pressing block and the upper push block to press the reinforcement ring on the upper side of the commutator segment placed in the tight ring tray onto the commutator segment on the tight ring tray;

[0016] S3. Reset the lower pad A and the upper pad A by driving the cylinder, and pull the fastening tray out of the fixed slide of the expansion and reinforcement ring station, and then place it in the heating device to preheat the commutator segments in the fastening tray;

[0017] S4. Pull out the fastening tray with the preheated commutator segments from the heating device and place it between the tight ring tray limit block and the tight ring tray support block of the blasting gate station. At the same time, place the material chamber between the material chamber support block and the material chamber positioning block of the blasting gate station. Drive the driving cylinder on the foot feeding plate C. Driven by the driving cylinder, the foot feeding plate C moves downward to press the material chamber and the tight ring tray together.

[0018] S5. A spring bushing is sleeved on the lower pressure head of the injection molding station. At the same time, the foot plate C is reset by driving the cylinder, and the material chamber and the tight ring tray pressed on the blast gate station are pulled out from the blast gate station and placed in the injection chute of the injection molding station. The heated bakelite powder is placed on the material chamber, and at the same time, the driving cylinder on the upper template and the driving cylinder on the lower template are driven. The material chamber pressing block on the upper template is driven downward by the driving cylinder to press the bakelite powder on the material chamber into the limiting hole of the tight ring tray through the injection hole of the material chamber. The lower pressure head on the lower template is driven upward by the driving cylinder to push the spring bushing to the limiting hole of the tight ring tray. The commutator segment, spring bushing and bakelite powder in the limiting hole of the tight ring tray are pressed into a finished commutator.

[0019] S6. Reset the material chamber pressing block on the upper template and the lower pressing head on the lower template by driving the air cylinder, then draw the material chamber and the tight ring tray out of the injection chute and place them between the tight ring tray support block and the material chamber support block at the injection port station, then drive the driving cylinder on the connecting pad, and the needle feeding plate on the connecting pad moves upward under the drive of the driving cylinder, and the ejector pin on the needle feeding plate passes through the ejector pin through-hole to remove the waste material of the commutator finished product in the tight ring tray, and at the same time, the needle feeding plate guide post on the needle feeding plate passes through the needle feeding plate guide post through-hole and cooperates with the tight ring tray limit block to separate the material chamber and the tight ring tray;

[0020] S7. Reset the needle feeding plate by driving the air cylinder, then pull out the tight ring tray separated from the material chamber from between the tight ring tray limit block and the tight ring tray support block, then place the tight ring tray between the upper pads B of the demolding station, and drive the foot feeding plate B, feeding foot B or the commutator feeding plate, commutator ejecting column to eject the commutator finished product on the tight ring tray to realize the demolding of the commutator finished product.

[0021] The commutator of the present invention is provided with reinforcement grooves for placing reinforcement rings on both sides of the copper feet of the commutator segments, and a fastening strip for locking the reinforcement ring is provided on one side of the reinforcement groove to prevent the reinforcement ring from falling off. Reinforcement strips and fastening grooves are also provided on the spring bushing to increase the contact area between the bakelite powder and the spring bushing, thereby improving the overall strength of the commutator. Under the premise of ensuring production costs, the commutator of the present invention can reach more than 400 seconds in the continuous overtaking test and the commutator as a whole remains intact.

[0022] When the production equipment of the present invention is in use, the commutator segment is placed in the limiting hole of the tight ring tray, and the reinforcement rings are expanded at the upper and lower ends of the commutator segment in turn through the expansion and reinforcement ring station, the commutator segment is preheated by the heating device, the sprue breaking station connects the material chamber with the tight ring tray, the commutator segment is injection-molded with the spring bushing and bakelite powder at the injection molding station, and then the material chamber and the tight ring tray are separated and the waste material is removed by the sprue breaking station, and the finished commutator is ejected from the tight ring tray at the demoulding station. The present invention integrates various stations involved in the commutator production into a workbench arranged in a semi-enclosed shape, and the mold of each station can be adjusted according to the specifications of the commutator, which has the advantages of small layout space, low work intensity, high work efficiency, low production cost, convenient and fast mold change, and convenient commutator production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the commutator of the present invention;

[0024] Figure 2 This invention Figure 1 A magnified view of point A;

[0025] Figure 3 It is a schematic diagram of the overall structure of the production equipment of the present invention;

[0026] Figure 4 It is a schematic diagram of the overall structure of the tight ring tray of the present invention;

[0027] Figure 5 This is a schematic structural diagram of the expansion and reinforcement ring station of the present invention;

[0028] Figure 6 This invention Figure 5 Enlarged view of point B;

[0029] Figure 7 This invention Figure 5 Enlarged view of point C;

[0030] Figure 8 It is a structural schematic diagram of the demoulding station of the present invention;

[0031] Figure 9 This is a schematic structural diagram of the sprue breaking station of the present invention;

[0032] Figure 10 This invention Figure 9 Enlarged view of point D;

[0033] Figure 11 This invention Figure 9 Enlarged view of point E;

[0034] Figure 12 It is a structural schematic diagram of the injection molding station of the present invention.

[0035] In the figure: 11. Bakelite powder body; 12. Spring bushing; 121. Reinforcement strip; 122. Fastening groove; 13. Commutator; 131. Copper foot; 132. Boss; 133. Extension strip; 134. Reinforcement groove; 135. Fastening strip; 14. Reinforcement ring; 2. Workbench; 21. Lifting device; 211. Lifting frame; 212. Lifting guide column; 213. Lifting plate; 214. Lifting cylinder; 22. Waste discharge hole; 3. Tightening ring tray; 31. Tray body; 32. Limiting hole; 33. Handle; 4. Increasing and reinforcing ring station; 41. Fixed slide; 411. Slide guide column; 412. Slide pull rod; 42 , lower pad A; 421, lower fixed plate; 422, lower positioning plate; 423, positioning pin; 424, lower guide column; 43, lower pressure block fixing plate; 431, lower pressure block; 432, lower push block; 433, lower spring; 44, upper pressure block fixing plate; 441, pull rod fixing block; 442, upper pad A; 443, upper pressure block; 444, upper push block; 445, upper spring; 446, upper guide column; 5, demoulding station; 51, lower pad B; 52, middle pad B; 53, upper pad B; 54, cover plate; 541, through hole; 542, pressure plate; 55, foot plate B; 551, foot plate B; 552, foot plate Foot plate guide column; 56, reversing plate feed plate; 561, reversing plate top column; 6, injection port station; 61, lower pad C; 611, lower slide guide column; 612, lower slide; 613, connecting pad; 62, middle pad C; 63, upper pad C; 631, tight ring tray support block; 64, buckle plate; 641, upper slide guide column; 642, upper slide; 643, material chamber positioning block; 65, positioning plate; 651, ejector pin through hole; 652, ejector chamber guide column through hole; 653, needle feed plate guide column through hole; 66, material chamber support assembly; 661, small support plate; 662, material chamber support block; 663, material chamber positioning ramp Surface; 664, small spring buckle plate; 665, small return spring; 67, tight ring tray limit assembly; 671, large support plate; 672, tight ring tray limit block; 673, material chamber through inclined surface; 674, large spring buckle plate; 675, large return spring; 68, foot feeding plate C; 681, foot feeding C; 69, needle feeding plate; 691, ejector pin; 692, ejector chamber guide column; 693, needle feeding plate guide column; 7, heating device; 8, injection molding station; 81, material chamber; 811, injection hole; 82, injection guide column; 83, upper template; 84, lower template; 85, material chamber pressure block; 86, lower pressure head; 87, injection chute. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0037] Example:

[0038] like Figures 1 to 2A commutator shown in the figure includes a bakelite powder body 11, a spring bushing 12 is provided in the bakelite powder body 11, and a plurality of commutator segments 13 are evenly embedded in the outer ring of the bakelite powder body 11, and the commutator segments 13 include copper feet 131 and bosses 132. Extension strips 133 are provided on both sides of the copper feet 131 of the commutator segments 13, and a reinforcement groove 134 is formed between the extension strip 133 and the copper feet 131 of the commutator segments 13. A reinforcement ring 14 is provided in the reinforcement groove 134, and a fastening strip 135 for locking the reinforcement ring 14 is provided at the end of the extension strip 133 facing the reinforcement groove 134; five reinforcement strips 121 are evenly provided on the surface of the side of the boss 132 of the spring bushing 12 facing the commutator segments 13 along the spiral direction of the spring bushing 12, and the spring bushing 12 is provided with fastening grooves 122 on both sides of the reinforcement strip 121.

[0039] like Figures 3 to 12 The commutator production equipment shown in the figure includes a workbench 2 arranged in a semi-enclosed shape, a tight ring tray 3 for fixing the commutator segments 13, and a material chamber 81. The middle of the workbench 2 is provided with a strengthening ring station 14, a demolding station 5, and a sprue breaking station 6 in sequence. The workbench 2 is provided with a lifting device 21 relative to the demolding station 5. An injection molding station 8 is provided on the right side of the workbench 2. The workbench 2 is provided with a heating device 7 for preheating the commutator segments 13 at the corner between the sprue breaking station 6 and the injection molding station 8; the tight ring tray 3 includes a tray body 31, a handle 33 is provided on the side wall of the tray body 31, and a plurality of limiting holes 32 for fixing the commutator segments 13 are also provided on the tray body 31. An injection hole 811 is provided on the material chamber 81 relative to the limiting hole 32 of the tray body 31; a waste discharge hole 22 is provided on the left side of the workbench 2.

[0040] The two sides of the expansion and reinforcement ring station 14 are provided with fixed slide grooves 41 for placing the tight ring pallet 3, and the upper and lower sides of the fixed slide groove 41 are respectively provided with slide guide columns 411 and slide rods 412; a lower pad A42 is provided on the slide rod 412, and a driving cylinder is connected to the lower side of the lower pad A42, and a lower fixed plate 421 and a lower positioning plate 422 are provided on the upper side of the lower pad A42 in sequence, and the lower pad A42, the lower fixed plate 421 and the lower positioning plate 422 are connected by a positioning pin 423, and a lower guide column 424 is provided on the lower positioning plate 422, and a lower pressure block fixing plate 43 is sleeved on the lower guide column 424, and a plurality of lower pressure blocks 431 are provided on the lower pressure block fixing plate 43. A lower push block 432 is provided in the lower pressure block 431, and a lower spring 433 is sleeved between the lower push block 432 and the lower positioning plate 422; an upper pressure block fixing plate 44 is provided on the slide guide column 411, and a pull rod fixing block 441 for fixing the upper pressure block fixing plate 44 is also provided on the slide guide column 411, and an upper pad A442 is provided on the upper side of the upper pressure block fixing plate 44, and a driving cylinder is connected to the upper side of the upper pad A442, and a plurality of upper pressure blocks 443 are provided on the upper pressure block fixing plate 44, and an upper push block 444 is provided in the upper pressure block 443, and an upper spring 445 is sleeved between the upper push block 444 and the upper pad A442, and an upper guide column 446 is also provided on the upper pressure block fixing plate 44.

[0041] The demoulding station 5 is provided with a lower pad B51, an intermediate pad B52, and an upper pad B53 on both sides from bottom to top. The spacing between the lower pad B51, the intermediate pad B52, and the upper pad B53 on both sides of the demoulding station 5 increases successively. The demoulding station 5 is provided with a cover plate 54 on the upper side of the upper pad B53. The cover plate 54 is provided with a plurality of through holes 541. The upper surface of the cover plate 54 is provided with a pressing plate 542 for fixing the cover plate 54. The demoulding station 5 is provided with a foot feeding plate B55 on the lower side of the cover plate 54. The lower side of the foot feeding plate B55 is connected to a driving mechanism. Cylinder, a plurality of feeding feet B551 and a feeding foot plate guide column 552 are provided on the feeding foot plate B55, and the demolding station 5 is provided with a reversing piece feeding plate 56 on the upper side of the cover plate 54, and the upper side of the reversing piece feeding plate 56 is connected with a driving cylinder, and a plurality of reversing piece top columns 561 are provided on the lower surface of the reversing piece feeding plate 56; the lifting device 21 includes a lifting frame 211, and a lifting guide column 212 is provided on the lifting guide column 212. A lifting plate 213 is provided on the lifting frame 211, and a lifting cylinder 214 for driving the lifting plate 213 to move up and down is also provided on the lifting frame 211.

[0042] The two sides of the blasting station 6 are sequentially provided with a lower pad C61, an intermediate pad C62, an upper pad C63, and a gusset plate 64 from bottom to top. A positioning plate 65 is provided between the intermediate pads C62 on both sides of the blasting station 6. The positioning plate 65 is clamped between the lower pad C61 and the upper pad C63. A material chamber support assembly 66 and a tight ring tray limiting assembly 67 are staggered between the upper pad C63 and the gusset plate 64. An upper slide guide column 641 is provided on the upper slide guide column 641. An upper slide 642 is provided on the upper slide 642. A foot feeding plate C68 is embedded in the upper slide 642. A driving cylinder is connected to the foot feeding plate C68. A plurality of roots are provided on the lower side of the foot feeding plate C68. Feeding foot C681; the lower pad C61 and the upper pad C63 are provided with a sliding groove guide column 611, the sliding groove guide column 611 passes through between the middle pad C62 and the positioning plate 65, the sliding groove guide column 611 is provided with a sliding groove 612, the lower side of the sliding groove 612 is connected to the connecting pad 613, the lower side of the connecting pad 613 is connected to the driving cylinder, the sliding groove 612 is embedded with a feeding plate 69, the feeding plate 69 is embedded with a ejector pin 691, a ejector chamber guide column 692, and a feeding plate guide column 693, the positioning plate 65 is provided with an ejector through hole 651, an ejector chamber guide column through hole 651 for the ejector pin 691, the ejector chamber guide column 692, and the feeding plate guide column 693 to pass through respectively. 52. The needle feeding plate guide post through hole 653; the material chamber support assembly 66 includes a small support plate 661 arranged between the upper pad C63 and the buckle plate 64, the end of the small support plate 661 is provided with a material chamber support block 662, the lower surface of the material chamber support block 662 is provided with a material chamber positioning inclined surface 663, the inner upper end of the buckle plate 64 is provided with a material chamber positioning block 643 matching the material chamber support block 662, and a material chamber 81 is placed between the material chamber support block 662 and the material chamber positioning block 643, and a small spring buckle plate 664 is provided on the outer side of the upper pad C63 and the buckle plate 64 relative to the small support plate 661, and a small return spring 665 is provided between the small spring buckle plate 664 and the small support plate 661; The tight ring tray limiting assembly 67 includes a large support plate 671 arranged between the upper pad C63 and the buckle plate 64, and a tight ring tray limiting block 672 is provided at the end of the large support plate 671, and the upper surface of the tight ring tray limiting block 672 is provided with a material chamber passing inclined surface 673, and the inner lower end of the upper pad C63 is provided with a tight ring tray support block 631 matching the tight ring tray limiting block 672, and the tight ring tray 3 is placed between the tight ring tray limiting block 672 and the tight ring tray support block 631, and a large spring buckle plate 674 is provided on the outer side of the upper pad C63 and the buckle plate 64 relative to the large support plate 671, and a large reset spring 675 is provided between the large spring buckle plate 674 and the large support plate 671.

[0043] Both sides of the injection molding station 8 are provided with injection guide pillars 82, and the upper and lower ends of the injection guide pillars 82 are respectively provided with an upper template 83 and a lower template 84. The upper side of the upper template 83 is connected to a driving cylinder, and the lower side of the upper template 83 is provided with a material chamber pressure block 85 matching the material chamber 81, and the lower side of the lower template 84 is connected to a driving cylinder. A lower pressure head 86 for injection-molding the spring bushing 12 is embedded on the lower template 84. The injection molding station 8 is provided with an injection chute 87 for placing the tight ring tray 3 and the material chamber 81 between the upper template 83 and the lower template 84.

[0044] A production process for a commutator comprises the following steps:

[0045] S1. Place the commutator segment 13 in the limiting hole 32 of the tightening ring tray 3, and place the reinforcement ring 14 on the upper side of the commutator segment 13. At the same time, place the reinforcement ring 14 on the push-down block 432 of the reinforcement ring expansion station 14.

[0046] S2. Place the fastening tray into the fixed slide 41 of the reinforcement ring expansion station 14, and at the same time drive the driving cylinder on the lower side of the lower pad A42 and the driving cylinder on the upper side of the upper pad A442. Driven by the driving cylinder, the lower pad A42 moves upward through the lower pressing block 431 to press the reinforcement ring 14 on the lower push block 432 onto the commutator segment 13 on the tight ring tray 3. Driven by the driving cylinder, the upper pad A442 moves downward through the upper pressing block 443 and the upper push block 444 to press the reinforcement ring 14 placed on the upper side of the commutator segment 13 in the tight ring tray 3 onto the commutator segment 13 on the tight ring tray 3.

[0047] S3. Reset the lower pad A42 and the upper pad A442 by driving the cylinder, and remove the fastening tray from the fixed slide 41 of the expansion and reinforcement ring station 14, and then place it in the heating device 7 to preheat the commutator segment 13 in the fastening ring tray 3;

[0048] S4. The fastening tray with the preheated commutator segment 13 is removed from the heating device 7 and placed between the ring-tightening tray limit block 672 and the ring-tightening tray support block 631 of the blasting station 6. Meanwhile, the material chamber 81 is placed between the material chamber support block 662 and the material chamber positioning block 643 of the blasting station 6. The driving cylinder on the foot-feeding plate C68 is driven. Driven by the driving cylinder, the foot-feeding plate C68 moves downward via the foot-feeding plate C681 to press the material chamber 81 onto the ring-tightening tray 3.

[0049] S5. A spring bushing 12 is sleeved on the lower pressure head 86 of the injection molding station 8. At the same time, the foot feeding plate C68 is reset by driving the cylinder, and the material chamber 81 and the tight ring tray 3 pressed on the blasting gate station 6 are drawn out from the blasting gate station 6 and placed in the injection chute 87 of the injection molding station 8, and heated bakelite powder is placed on the material chamber 81. At the same time, the driving cylinder on the upper template 83 and the driving cylinder on the lower template 84 are driven. The material chamber pressing block 85 on the upper template 83 is driven downward by the driving cylinder to inject the bakelite powder on the material chamber 81 into the limiting hole 32 of the tight ring tray 3 through the injection hole 811 of the material chamber 81. The lower pressure head 86 on the lower template 84 is driven upward by the driving cylinder to push the spring bushing 12 to the limiting hole 32 of the tight ring tray 3. The commutator segment 13 in the limiting hole 32 of the tight ring tray 3 is pressed into a finished commutator product together with the spring bushing 12 and the bakelite powder.

[0050] S6. The material chamber pressing block 85 on the upper template 83 and the lower pressing head 86 on the lower template 84 are reset by driving the air cylinder, and then the material chamber 81 and the tight ring tray 3 are drawn out from the injection chute 87 and placed between the tight ring tray support block 631 and the material chamber support block 662 of the injection port station 6. Then the driving cylinder on the connecting pad 613 is driven, and the needle feeding plate 69 on the connecting pad 613 moves upward under the drive of the driving cylinder. The ejector pin 691 on the needle feeding plate 69 passes through the ejector through-hole 651 to remove the waste material of the commutator finished product in the tight ring tray 3. At the same time, the needle feeding plate guide post 693 on the needle feeding plate 69 passes through the through-hole 653541 of the needle feeding plate guide post 693 and cooperates with the tight ring tray limit block 672 to separate the material chamber 81 from the tight ring tray 3.

[0051] S7. Reset the needle feeding plate 69 by driving the air cylinder, then pull out the tight ring tray 3 separated from the material chamber 81 from between the tight ring tray limit block 672 and the tight ring tray support block 631, then place the tight ring tray 3 between the upper pads B53 of the demolding station 5, and drive the foot feeding plate B55, foot feeding B551 or the commutator feeding plate 56, commutator ejecting column 561 to eject the commutator finished product on the tight ring tray 3 to realize the demolding of the commutator finished product.

[0052] The embodiment described above is only a preferred solution of the present invention and does not limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solution described in the claims.

Claims

1. A commutator production equipment, characterized in that: The invention comprises a workbench (2) arranged in a semi-enclosed shape, a ring-tightening tray (3) for fixing a commutator segment (13), and a material chamber (81); a ring-swelling and reinforcing ring station (4), a demoulding station (5), and a sprue-breaking station (6) are arranged in sequence in the middle of the workbench (2); a lifting device (21) is arranged on the workbench (2) relative to the demoulding station (5); an injection molding station (8) is arranged on the right side of the workbench (2); and a heating device (7) for preheating the commutator segment (13) is arranged on the workbench (2) at a corner between the sprue-breaking station (6) and the injection molding station (8); the ring-tightening tray (3) comprises a tray body (31), The tray body (31) is also provided with a plurality of limiting holes (32) for fixing the commutator segments (13); the material chamber (81) is provided with injection holes (811) at the limiting holes (32) relative to the tray body (31); fixed slide grooves (41) for placing the tightening ring tray (3) are provided on both sides of the expansion and reinforcement ring station (4); the upper and lower sides of the fixed slide groove (41) are respectively provided with slide groove guide columns (411) and slide groove pull rods (412); a lower pad A (42) is provided on the slide groove pull rod (412); the lower side of the lower pad A (42) is connected to a driving cylinder, and the upper side of the lower pad A (42) is connected in sequence to the upper side of the lower pad A (42). A lower fixing plate (421) and a lower positioning plate (422) are provided. The lower pad A (42), the lower fixing plate (421) and the lower positioning plate (422) are connected by positioning pins (423). A lower guide column (424) is provided on the lower positioning plate (422). A lower pressure block fixing plate (43) is sleeved on the lower guide column (424). A plurality of lower pressure blocks (431) are provided on the lower pressure block fixing plate (43). A lower push block (432) is provided inside the lower pressure block (431). A lower spring (433) is sleeved between the lower push block (432) and the lower positioning plate (422). The slide guide column (411) An upper pressure block fixing plate (44) is provided on the upper portion, a pull rod fixing block (441) for fixing the upper pressure block fixing plate (44) is also provided on the slide guide column (411), an upper pad A (442) is provided on the upper side of the upper pressure block fixing plate (44), a driving cylinder is connected to the upper side of the upper pad A (442), a plurality of upper pressure blocks (443) are provided on the upper pressure block fixing plate (44), an upper push block (444) is provided inside the upper pressure block (443), an upper spring (445) is sleeved between the upper push block (444) and the upper pad A (442), and an upper guide column (446) is also provided on the upper pressure block fixing plate (44);The two sides of the injection port station (6) are provided with a lower pad C (61), an intermediate pad C (62), an upper pad C (63), and a buckle plate (64) in order from bottom to top. A positioning plate (65) is provided between the intermediate pads C (62) on both sides of the injection port station (6). The positioning plate (65) is clamped between the lower pad C (61) and the upper pad C (63). A material chamber support assembly (66) and a tightening ring tray limiting assembly (67) are alternately arranged between the upper pad C (63) and the buckle plate (64). An upper slide groove guide column (641) is provided on the buckle plate (64). An upper slide groove (642) is provided, wherein a foot-feeding plate C (68) is embedded in the upper slide groove (642), wherein a driving cylinder is connected to the foot-feeding plate C (68), and a plurality of foot-feeding plates C (681) are provided on the lower side of the foot-feeding plate C (68); a lower slide groove guide column (611) is provided in the lower pad C (61) and the upper pad C (63), wherein the lower slide groove guide column (611) passes between the middle pad C (62) and the positioning plate (65), wherein a lower slide groove (612) is provided on the lower slide groove guide column (611), wherein a connecting pad (613) is connected to the lower side of the lower slide groove (612), and wherein the connecting pad (613) is provided at the lower side of the connecting pad The lower side is connected to a driving cylinder, the lower sliding groove (612) is embedded with a needle feeding plate (69), the needle feeding plate (69) is embedded with an ejector pin (691), an ejector chamber guide column (692), and a needle feeding plate guide column (693), the positioning plate (65) is provided with an ejector pin through hole (651), an ejector chamber guide column through hole (652), and a needle feeding plate guide column through hole (653) for the ejector pin (691), the ejector chamber guide column (692), and the needle feeding plate guide column (693) to pass through respectively, the material chamber support assembly (66) includes a small support plate (661) arranged between the upper pad plate C (63) and the buckle plate (64), the small support A material chamber support block (662) is provided at the end of the plate (661); a material chamber positioning inclined surface (663) is provided on the lower surface of the material chamber support block (662); a material chamber positioning block (643) matching the material chamber support block (662) is provided at the inner upper end of the buckle plate (64); a material chamber (81) is placed between the material chamber support block (662) and the material chamber positioning block (643); a small spring buckle plate (664) is provided on the outer side of the upper pad C (63) and the buckle plate (64) relative to the small support plate (661); and a small return spring (665) is provided between the small spring buckle plate (664) and the small support plate (661);The tight ring tray limiting assembly (67) comprises a large support plate (671) arranged between the upper pad C (63) and the buckle plate (64); a tight ring tray limiting block (672) is arranged at the end of the large support plate (671); a material chamber passing inclined surface (673) is arranged on the upper surface of the tight ring tray limiting block (672); a tight ring tray supporting block (631) matching the tight ring tray limiting block (672) is arranged at the inner lower end of the upper pad C (63); the tight ring tray (3) is placed between the tight ring tray limiting block (672) and the tight ring tray supporting block (631); a large spring buckle plate (674) is arranged on the outer side of the upper pad C (63) and the buckle plate (64) relative to the large support plate (671); and a large return spring (675) is arranged between the large spring buckle plate (674) and the large support plate (671). ; 2. The commutator production equipment according to claim 1, characterized in that: The demoulding station (5) is provided with a lower pad B (51), an intermediate pad B (52), and an upper pad B (53) on both sides from bottom to top, and the spacing between the lower pad B (51), the intermediate pad B (52), and the upper pad B (53) on both sides of the demoulding station (5) increases in sequence. The demoulding station (5) is provided with a cover plate (54) on the upper side of the upper pad B (53), and the cover plate (54) is provided with a plurality of through holes (541). The upper surface of the cover plate (54) is provided with a pressing plate (542) for fixing the cover plate (54). The demoulding station (5) is provided with a foot feeding plate B (55) on the lower side of the cover plate (54), and the lower side of the foot feeding plate B (55) is connected to a A driving cylinder is provided on the foot feeding plate B (55); a plurality of foot feeding plates B (551) and foot feeding plate guide pillars (552); the demoulding station (5) is provided with a reversing plate feeding plate (56) on the upper side of the cover plate (54); the upper side of the reversing plate feeding plate (56) is connected to the driving cylinder; the lower surface of the reversing plate feeding plate (56) is provided with a plurality of reversing plate top pillars (561); the lifting device (21) comprises a lifting frame (211); the lifting frame (211) is provided with a lifting guide pillar (212); the lifting guide pillar (212) is provided with a lifting plate (213); the lifting frame (211) is also provided with a lifting cylinder (214) for driving the lifting plate (213) to move up and down.

3. The commutator production equipment according to claim 1, characterized in that: Both sides of the injection molding station (8) are provided with injection guide pillars (82), and the upper and lower ends of the injection guide pillars (82) are respectively sleeved with an upper mold plate (83) and a lower mold plate (84), the upper side of the upper mold plate (83) is connected to a driving cylinder, the lower side of the upper mold plate (83) is provided with a material chamber pressing block (85) matching the material chamber (81), the lower side of the lower mold plate (84) is connected to a driving cylinder, and the lower mold plate (84) is embedded with a lower pressure head (86) for injecting a spring bushing (12), and the injection molding station (8) is provided with an injection chute (87) for placing a tight ring tray (3) and a material chamber (81) between the upper mold plate (83) and the lower mold plate (84).

4. The commutator production equipment according to claim 1, characterized in that: A waste discharge hole (22) is provided on the left side of the workbench (2), and a handle (33) is provided on the side wall of the tray body (31).

5. A commutator production process, characterized in that: A commutator production device according to any one of claims 1 to 4 comprises the following steps: S1, placing the commutator segment (13) in the limiting hole (32) of the tightening ring tray (3), and placing a reinforcing ring (14) on the upper side of the commutator segment (13), and at the same time placing the reinforcing ring (14) on the push-down block (432) of the reinforcing ring expansion station (4); S2, placing the tightening ring tray into the fixed slide groove (41) of the reinforcement ring expansion station (4), and driving the driving cylinder on the lower side of the lower pad A (42) and the driving cylinder on the upper side of the upper pad A (442) at the same time. The lower pad A (42) is driven by the driving cylinder to move upward through the lower pressing block (431) to press the reinforcement ring (14) on the lower push block (432) onto the commutator segment (13) on the tightening ring tray (3). The upper pad A (442) is driven by the driving cylinder to move downward through the upper pressing block (443) and the upper push block (444) to press the reinforcement ring (14) on the upper side of the commutator segment (13) placed in the tightening ring tray (3) onto the commutator segment (13) on the tightening ring tray (3). S3, resetting the lower pad A (42) and the upper pad A (442) by driving the cylinder, and pulling the ring-tightening tray (3) out of the fixed slide groove (41) of the expansion and reinforcement ring station (4), and then placing it in the heating device (7) to preheat the commutator segment (13) in the ring-tightening tray (3); S4, the ring-tightening tray (3) with the preheated commutator segment (13) is taken out from the heating device (7), and placed between the ring-tightening tray stopper (672) and the ring-tightening tray support block (631) of the blasting station (6), and the material chamber (81) is placed between the material chamber support block (662) and the material chamber positioning block (643) of the blasting station (6), and the driving cylinder on the foot-feeding plate C (68) is driven. The foot-feeding plate C (68) is driven by the driving cylinder to move downward through the foot-feeding plate C (681) to press the material chamber (81) and the ring-tightening tray (3); S5. A spring bushing (12) is sleeved on the lower pressure head (86) of the injection molding station (8). At the same time, the foot plate C (68) is reset by driving the cylinder, and the pressed material chamber (81) and the ring-tightening tray (3) on the sprue breaking station (6) are drawn out from the sprue breaking station (6) and placed in the injection chute (87) of the injection molding station (8). The heated bakelite powder is placed on the material chamber (81). At the same time, the driving cylinder on the upper mold plate (83) and the driving cylinder on the lower mold plate (84) are driven, and the upper mold plate (83) is pressed. The material chamber pressing block (85) is driven downward by the driving cylinder to press the bakelite powder on the material chamber (81) into the limiting hole (32) of the tight ring tray (3) through the injection hole (811) of the material chamber (81); the lower pressing head (86) on the lower template (84) is driven upward by the driving cylinder to push the spring bushing (12) into the limiting hole (32) of the tight ring tray (3); the commutator segment (13) in the limiting hole (32) of the tight ring tray (3) and the bakelite powder are pressed into a commutator product; S6, the material chamber pressing block (85) on the upper mold plate (83) and the lower pressing head (86) on the lower mold plate (84) are reset by driving the air cylinder, and then the material chamber (81) and the ring-tightening tray (3) are pulled out from the injection chute (87) and placed between the ring-tightening tray support block (631) and the material chamber support block (662) of the injection port station (6), and then the driving cylinder on the connecting pad (613) is driven to connect the pad (613). The needle feeding plate (69) on the needle feeding plate (13) moves upward under the drive of the driving cylinder, and the ejector pin (691) on the needle feeding plate (69) passes through the ejector pin through hole (651) to remove the waste material of the commutator finished product in the tight ring tray (3). At the same time, the needle feeding plate guide post (693) on the needle feeding plate (69) passes through the needle feeding plate guide post through hole (653) and cooperates with the tight ring tray limit block (672) to separate the material chamber (81) from the tight ring tray (3); S7, the needle feeding plate (69) is reset by driving the air cylinder, and then the ring-tightening tray (3) separated from the material chamber (81) is pulled out from between the ring-tightening tray stop block (672) and the ring-tightening tray support block (631), and then the ring-tightening tray (3) is placed between the upper pads B (53) of the demoulding station (5), and the foot feeding plate B (55), the foot feeding plate B (551) or the commutator feeding plate (56), the commutator ejecting column (561) are driven to eject the commutator finished product on the ring-tightening tray (3) to realize demoulding of the commutator finished product.

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