CN108381148B - CPU fan axle core upset lamination equipment - Google Patents
CPU fan axle core upset lamination equipment Download PDFInfo
- Publication number
- CN108381148B CN108381148B CN201810261071.5A CN201810261071A CN108381148B CN 108381148 B CN108381148 B CN 108381148B CN 201810261071 A CN201810261071 A CN 201810261071A CN 108381148 B CN108381148 B CN 108381148B
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- cylinder
- pressing
- feeding
- discharging
- adjusting mechanism
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- 238000003475 lamination Methods 0.000 title description 2
- 238000003825 pressing Methods 0.000 claims abstract description 44
- 238000007599 discharging Methods 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 230000007306 turnover Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 4
- 235000013405 beer Nutrition 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 2
- 230000006698 induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
- Feeding Of Articles To Conveyors (AREA)
Abstract
The invention discloses a CPU fan shaft core overturning and pressing device which comprises a feeding device, a shaft core overturning device, a feeding cylinder, a pressing device, a discharging device and a machine table; the feeding device comprises a hopper, a pushing slide block, and a material taking pipe and an arc blanking pipe which are sequentially arranged between the hopper and the pushing slide block; the axle core overturning device comprises a rotary cylinder and a direction adjusting mechanism; the feeding hole of the direction adjusting mechanism is positioned at one side of the pushing slide block, and a discharging block is arranged below the feeding hole; the top of the discharging block is provided with a strip-shaped trough, and a discharging valve is arranged below the strip-shaped trough; the feeding cylinder is connected with a push plate, and one end of the push plate is connected with the side surface of the strip-shaped trough; the pressing device comprises a pressing cylinder and a pressing head; the blanking device is arranged on the top surface of the machine table; the blanking device comprises a transmission belt and a motor; the transmission belt comprises two belts; a positioning jig is arranged between the two belts and is positioned under the discharge valve and the pressure head. The equipment has the advantages of high productivity, low labor intensity of workers and capability of avoiding abrasion of the shaft core.
Description
Technical Field
The invention relates to a CPU fan shaft core overturning and pressing device.
Background
The CPU fan mainly comprises a fan blade, a shaft core and a fan blade base. The shaft core is made of hollow conical bar stock, namely, the shaft core is of a hollow structure with one end larger and the other end smaller. Before the shaft core is pressed into the fan blade shaft, the big end and the small end of the shaft core need to be turned over uniformly. At present, the shaft cores are vertically arranged by mainly adopting the vibration disc, one shaft core is manually lifted up to pre-press one end of the shaft core on the fan shaft of the fan blade base arranged on the positioning jig, and then the shaft core is pressed into the fan shaft of the fan blade base through the pressing jig. In addition, in the process of vertically arranging the shaft cores by adopting the vibration disc, the shaft cores are easy to be worn due to friction.
Disclosure of Invention
In order to solve the technical problems, the invention provides the CPU fan shaft core overturning and pressing equipment which is high in productivity and low in labor intensity of workers and can avoid abrasion of the shaft core.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
A CPU fan axle core overturning and pressing device comprises a feeding device, an axle core overturning device, a feeding cylinder, a pressing device, a discharging device and a machine;
The feeding device comprises a funnel-shaped hopper, a material taking pipe and a material pushing sliding block; one end of the material taking pipe is connected with a discharge hole of the hopper, the other end of the material taking pipe is connected with an arc blanking pipe, the tail end of the arc blanking pipe is connected with the material pushing sliding block, and the tail end of the arc blanking pipe is also provided with a big-small head detection device;
The axle core overturning device comprises a rotary air cylinder and a direction adjusting mechanism connected with the rotary air cylinder; the feeding hole of the direction adjusting mechanism is positioned at one side of the pushing slide block, and a discharging block is arranged below the direction adjusting mechanism; the top of the discharging block is provided with a strip-shaped trough along the length direction, and the side surface of the discharging block is provided with a through trough I along the length direction; one end of the strip-shaped trough is positioned right below the discharge hole of the direction adjusting mechanism, and the other end of the strip-shaped trough is provided with a round hole; a discharging valve is arranged right below the round hole;
the telescopic head of the feeding cylinder is connected with a push plate, one end of the push plate is matched with the first through groove, and the push plate can move back and forth in the first through groove;
the pressing device comprises a pressing cylinder and a pressing head connected with the pressing cylinder; the pressure head is positioned right above the round hole;
the top surface of the machine table is provided with a vertical plate and a vertical column, and one side surface of the machine table is provided with an operation panel; the vertical plate is connected with the material pressing cylinder and the material discharging valve, and is also connected with the pressure head through a linear guide rail; the upright post is connected with the feeding cylinder and the material taking pipe;
the blanking device is positioned on the top surface of the machine table, the bottom of the blanking device is connected with a first cylinder through a flat plate, and the first cylinder is arranged in the machine table; the blanking device comprises a conveying belt and a motor connected with the conveying belt; the conveying belt comprises two belts which are arranged at intervals and in parallel; a positioning jig is arranged between the two belts, is positioned under the discharging valve, and is fixedly arranged on the top surface of the machine table.
Further, the direction adjusting mechanism comprises a first vertical plate and a second vertical plate, and a second through groove similar to an inverted beer bottle is formed in one side surface of the second vertical plate; a stop block is arranged in the middle of the second through groove, a turnover plate is arranged at the top of the stop block, and the turnover plate is connected with the rotary cylinder; the first vertical plate is attached to the second vertical plate, and a row cavity with an upper opening and a lower opening is formed.
Further, a dredging air cylinder is arranged on the material taking pipe, and the dredging air cylinder is close to a discharge hole of the hopper; the dredging cylinder is connected with a material guiding pipe which can extend from the discharge hole to the hopper.
Furthermore, the other end of the conveying belt is provided with an inclined slideway.
Further, a safety grating is arranged on the top surface of the machine table; the safety grating is close to the conveying belt, and the safety grating is opposite to the discharge valve.
Further, the operation panel is close to the safety grating.
Furthermore, a material determining induction device is arranged on the material taking pipe.
Through the technical scheme, the CPU fan shaft core overturning and pressing equipment provided by the invention has the advantages that a plurality of bars are placed in the hopper, a worker places the fan blade base on the positioning jig, shaft core overturning and pressing operations can be completed through the feeding device, the shaft core overturning device, the feeding cylinder and the pressing device, products can be sent out through the conveying belt, the degree of visible automation is higher, and the shaft core is subjected to small friction force, so that the CPU fan shaft core overturning and pressing equipment provided by the invention has the advantages of high production rate, low labor intensity of the worker and capability of avoiding abrasion of the shaft core.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a perspective view of a CPU fan core flipping press-fit apparatus according to an embodiment of the present invention;
fig. 2 is a perspective view of a mandrel turning device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, the invention provides a CPU fan shaft core overturning and pressing device, which comprises a feeding device, a shaft core overturning device, a feeding cylinder 16, a pressing device, a discharging device and a machine 4.
The feeding device comprises a funnel-shaped hopper 11, a material taking pipe 18 and a material pushing sliding block 13; one end of the material taking pipe 18 is connected with the discharge hole of the hopper 11, the other end of the material taking pipe is connected with an arc blanking pipe 181, the tail end of the arc blanking pipe 181 is connected with the material pushing slide block 13, and a big-end and small-end detection device (not shown in the figure) is further arranged at the tail end of the arc blanking pipe. Preferably, the material taking pipe is provided with a material determining induction device, and the distance between the material taking pipe and the tail end of the material taking pipe is one third of the length of the material taking pipe.
The axle core turning device comprises a rotary air cylinder 141 and a direction adjusting mechanism 142 connected with the rotary air cylinder 141; the feed inlet of the direction adjusting mechanism 142 is positioned at one side of the pushing slide block 13, and a discharging block 15 is arranged below the direction adjusting mechanism 142; the top of the discharging block 15 is provided with a strip-shaped trough, and the side surface of the discharging block is provided with a through trough I along the length direction; one end of the strip-shaped trough is positioned right below the discharge hole of the direction adjusting mechanism 142, and the other end of the strip-shaped trough is provided with a round hole 151; a discharge valve 17 is arranged right below the round hole 151.
The telescopic head of the feeding cylinder 16 is connected with a push plate 161, one end of the push plate 161 is matched with the first through groove, and the push plate can move back and forth in the first through groove.
The pressing device comprises a pressing cylinder 21 and a pressing head 22 connected with the pressing cylinder 21; the ram 22 is located directly above the circular aperture 151.
The top surface of the machine table 4 is provided with a vertical plate 1 and a vertical column 7, and one side surface of the machine table is provided with an operation panel 41; the vertical plate 1 is connected with the material pressing cylinder 21 and the material discharging valve 17, and is also connected with the pressure head 22 through a linear guide rail 23; the upright post 7 is connected with the feeding cylinder 16 and the material taking pipe 18.
The blanking device is positioned on the top surface of the machine table 4, and the bottom of the blanking device is connected with a first cylinder (not shown in the figure) through a flat plate, and the first cylinder is arranged in the machine table 4; the blanking device comprises a conveying belt 31 and a motor 33 connected with the conveying belt 31; the conveyor belt 31 comprises two belts arranged in parallel at intervals; a positioning jig 43 is arranged between the two belts, and the positioning jig 43 is positioned right below the discharge valve 17 and fixedly arranged on the top surface of the machine table 4.
In addition, referring to fig. 2, the direction adjusting mechanism 142 includes a first vertical plate 9 and a second vertical plate 8, and a second through groove similar to an inverted beer bottle is formed on one side of the second vertical plate 8; a stop block 83 is arranged in the middle of the second through groove, a turnover plate 84 is arranged at the top of the stop block 83, and the turnover plate 84 is connected with the rotary cylinder 141; the first vertical plate 9 is attached to the second vertical plate 8, and a row cavity with an upper opening and a lower opening is formed. After the shaft core enters from the top opening of the row cavity, if the small end of the shaft core is contacted with the overturning plate 84, the shaft core enters a channel 81 formed by the side wall of the stop block 83 and the two inner side walls of the through groove along the overturning plate 84, and then the shaft core exits from the bottom opening of the row cavity; if the big end of the axle core contacts with the turnover plate 84, the rotary air cylinder 141 drives the turnover plate 84 to turn over, so that the small end of the axle core faces downwards, then the axle core enters another channel 82 formed by the side wall of the stop block 83 and the two inner side walls of the through groove along the turnover plate 84, and then the axle core is opened out from the bottom of the row cavity; thus, when the shaft passes through the direction adjustment mechanism 142, the shaft is the small end first. When the shaft cores are arranged, the shaft cores are hardly subjected to friction force, so that the shaft cores can be prevented from being worn.
In addition, a dredging cylinder 12 is arranged on the material taking pipe 18, and the dredging cylinder 12 is close to a discharge hole of the hopper 11; the dredging cylinder 12 is connected with a material guiding pipe 121 which can extend from the material outlet into the hopper 11. When the discharge hole of the hopper 11 is blocked by the shaft core or the discharge is not smooth, the dredging cylinder 12 drives the material guiding pipe 121 to move up and down, so that the problem that the discharge hole of the hopper 11 is blocked by the bar stock or the discharge is not smooth can be solved, and the bar stock can smoothly enter the material taking pipe 18 from the discharge hole of the hopper 11.
In addition, the other end of the conveying belt 31 is provided with an inclined slideway 32. When the shaft core and the fan blade base 431 are transported to the inclined slide 32 by the conveyor belt 31, the shaft core and the fan blade base 431 can slide down smoothly along the inclined slide 32.
In addition, a safety grating 42 is arranged on the top surface of the machine table 4; the safety grating 42 is close to the conveyor belt 31, and the safety grating 42 faces the discharge valve 17. The operation panel 41 is adjacent to the safety grating 42. When the pressure head 22 moves downwards, if a worker's limb extends below the pressure head 22, the safety grating 42 will feed information back to the material pressing cylinder 21, and the material pressing cylinder 21 will stop moving downwards and move upwards when receiving the information, so as to avoid crush the worker.
The invention provides a working principle of a CPU fan shaft core overturning and pressing device, which is as follows: a plurality of shafts are arranged in the hopper 11, and enter the material taking pipe 18 from a material outlet of the hopper 11; when the shaft core reaches the arc blanking pipe 181, the size head detection device arranged at the tail end of the arc blanking pipe can detect and feed information back to the direction adjustment mechanism; when the shaft core comes out from the end of the arc blanking pipe 181, the shaft core is pushed into the feeding hole of the direction adjusting mechanism 142 by the pushing slider 13, and the turnover plate 84 turns over according to the information. When the shaft cores are turned over by the direction adjusting mechanism 142, the small ends of the shaft cores come out of the discharge hole of the direction adjusting mechanism 142 and fall into the discharging block 15, and then the feeding cylinder 16 pushes the shaft cores into the round holes 151 one by one through the push plate 161; when the discharge valve 17 is in operation, it allows only one shaft core to come out of the circular hole 151 at a time. When a shaft core comes out of the round hole 151, the pressing cylinder 21 drives the pressing head 22 to move downwards along the linear guide rail 23 until the shaft core is pressed onto the fan shaft of the fan blade base 431 placed on the positioning jig 43, so that the shaft core is pressed onto the fan shaft of the fan blade base 431; when the pressing is finished, the pressing head 22 returns to the original position under the driving of the pressing cylinder 21. Meanwhile, the first cylinder lifts the conveying belt 31, and the motor 33 drives the belt to move, so that the shaft core and the fan blade base 431 which are pressed together are finally output.
According to the technical scheme, a plurality of shafts are placed in the hopper 11, a worker places the fan blade base 431 on the positioning jig 43, shaft core overturning and pressing operations can be completed through the feeding device, the shaft core overturning device, the feeding cylinder 16 and the pressing device, products can be sent out through the conveying belt 31, and the degree of visual automation is high.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The CPU fan shaft core overturning and pressing equipment is characterized by comprising a feeding device, a shaft core overturning device, a feeding cylinder, a pressing device, a discharging device and a machine;
The feeding device comprises a funnel-shaped hopper, a material taking pipe and a material pushing sliding block; one end of the material taking pipe is connected with a discharge hole of the hopper, the other end of the material taking pipe is connected with an arc blanking pipe, the tail end of the arc blanking pipe is connected with the material pushing sliding block, and the tail end of the arc blanking pipe is also provided with a big-small head detection device;
The axle core overturning device comprises a rotary air cylinder and a direction adjusting mechanism connected with the rotary air cylinder; the feeding hole of the direction adjusting mechanism is positioned at one side of the pushing slide block, and a discharging block is arranged below the direction adjusting mechanism; the top of the discharging block is provided with a strip-shaped trough along the length direction, and the side surface of the discharging block is provided with a through trough I along the length direction; one end of the strip-shaped trough is positioned right below the discharge hole of the direction adjusting mechanism, and the other end of the strip-shaped trough is provided with a round hole; a discharging valve is arranged right below the round hole;
the telescopic head of the feeding cylinder is connected with a push plate, one end of the push plate is matched with the first through groove, and the push plate can move back and forth in the first through groove;
the pressing device comprises a pressing cylinder and a pressing head connected with the pressing cylinder; the pressure head is positioned right above the round hole;
the top surface of the machine table is provided with a vertical plate and a vertical column, and one side surface of the machine table is provided with an operation panel; the vertical plate is connected with the material pressing cylinder and the material discharging valve, and is also connected with the pressure head through a linear guide rail; the upright post is connected with the feeding cylinder and the material taking pipe;
The blanking device is positioned on the top surface of the machine table, the bottom of the blanking device is connected with a first cylinder through a flat plate, and the first cylinder is arranged in the machine table; the blanking device comprises a conveying belt and a motor connected with the conveying belt; the conveying belt comprises two belts which are arranged at intervals and in parallel; a positioning jig is arranged between the two belts, is positioned under the discharging valve and is fixedly arranged on the top surface of the machine table;
The direction adjusting mechanism comprises a first vertical plate and a second vertical plate, and a second through groove similar to an inverted beer bottle is formed in one side surface of the second vertical plate; a stop block is arranged in the middle of the second through groove, a turnover plate is arranged at the top of the stop block, and the turnover plate is connected with the rotary cylinder; the first vertical plate is attached to the second vertical plate, and a row cavity with an upper opening and a lower opening is formed;
A dredging air cylinder is arranged on the material taking pipe, and the dredging air cylinder is close to a discharge hole of the hopper; the dredging cylinder is connected with a material guiding pipe which can extend from the discharge hole to the hopper.
2. The CPU fan core flip press-fit apparatus as claimed in claim 1, wherein the other end of the conveyor belt is provided with an inclined slide.
3. The CPU fan core turnover pressing apparatus of claim 1, wherein a security grating is provided on the top surface of the machine; the safety grating is close to the conveying belt, and the safety grating is opposite to the discharge valve.
4. A CPU fan core flip press-fit apparatus as claimed in claim 3, wherein the operation panel is adjacent to the safety grating.
5. The apparatus of claim 4, wherein the material-receiving tube is provided with a material-determining sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810261071.5A CN108381148B (en) | 2018-03-27 | 2018-03-27 | CPU fan axle core upset lamination equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810261071.5A CN108381148B (en) | 2018-03-27 | 2018-03-27 | CPU fan axle core upset lamination equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108381148A CN108381148A (en) | 2018-08-10 |
| CN108381148B true CN108381148B (en) | 2024-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810261071.5A Active CN108381148B (en) | 2018-03-27 | 2018-03-27 | CPU fan axle core upset lamination equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN108381148B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117182506B (en) * | 2023-11-07 | 2024-01-02 | 长春惠泰消防安全科技有限公司 | Connector sealing gasket assembly equipment for fire hose |
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| JP2007167947A (en) * | 2005-12-19 | 2007-07-05 | Yoshitaka Aoyama | Device for feeding shaft-like part |
| JP2012040641A (en) * | 2010-08-19 | 2012-03-01 | Honda Motor Co Ltd | Shaft member positioning device, and press-in machine for pressing material into shaft member |
| CN102773690A (en) * | 2012-08-23 | 2012-11-14 | 昆山迈致治具科技有限公司 | Pressing jig for PCB (printed circuit board) connecting nails |
| CN104148920A (en) * | 2014-08-08 | 2014-11-19 | 杭州沃镭科技有限公司 | Steering knuckle bearing material press-fitting production line |
| CN104353990A (en) * | 2014-10-31 | 2015-02-18 | 金盛紧固技术(安徽)有限责任公司 | Hose clamp screw assembling machine |
| CN204413503U (en) * | 2014-12-16 | 2015-06-24 | 东莞市中天自动化科技有限公司 | Upset fetching device |
| CN205328215U (en) * | 2016-01-14 | 2016-06-22 | 广东长天精密设备科技有限公司 | Light guide plate assembly device |
| CN107433435A (en) * | 2017-09-12 | 2017-12-05 | 合肥巨智能装备有限公司 | Attitude-adjusting system before a kind of shift fork axle bushing press-mounting |
| CN107717435A (en) * | 2017-08-22 | 2018-02-23 | 东莞市蓉工自动化科技有限公司 | A kind of Full automatic convex wheel shaft kludge |
| CN107803640A (en) * | 2017-11-21 | 2018-03-16 | 东莞理工学院 | A kind of button motor auto-stitching machine |
| CN208019749U (en) * | 2018-03-27 | 2018-10-30 | 苏州奥兰迪尔自动化设备有限公司 | A kind of cpu fan shaft core overturning press equipment |
-
2018
- 2018-03-27 CN CN201810261071.5A patent/CN108381148B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007167947A (en) * | 2005-12-19 | 2007-07-05 | Yoshitaka Aoyama | Device for feeding shaft-like part |
| JP2012040641A (en) * | 2010-08-19 | 2012-03-01 | Honda Motor Co Ltd | Shaft member positioning device, and press-in machine for pressing material into shaft member |
| CN102773690A (en) * | 2012-08-23 | 2012-11-14 | 昆山迈致治具科技有限公司 | Pressing jig for PCB (printed circuit board) connecting nails |
| CN104148920A (en) * | 2014-08-08 | 2014-11-19 | 杭州沃镭科技有限公司 | Steering knuckle bearing material press-fitting production line |
| CN104353990A (en) * | 2014-10-31 | 2015-02-18 | 金盛紧固技术(安徽)有限责任公司 | Hose clamp screw assembling machine |
| CN204413503U (en) * | 2014-12-16 | 2015-06-24 | 东莞市中天自动化科技有限公司 | Upset fetching device |
| CN205328215U (en) * | 2016-01-14 | 2016-06-22 | 广东长天精密设备科技有限公司 | Light guide plate assembly device |
| CN107717435A (en) * | 2017-08-22 | 2018-02-23 | 东莞市蓉工自动化科技有限公司 | A kind of Full automatic convex wheel shaft kludge |
| CN107433435A (en) * | 2017-09-12 | 2017-12-05 | 合肥巨智能装备有限公司 | Attitude-adjusting system before a kind of shift fork axle bushing press-mounting |
| CN107803640A (en) * | 2017-11-21 | 2018-03-16 | 东莞理工学院 | A kind of button motor auto-stitching machine |
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| Publication number | Publication date |
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| CN108381148A (en) | 2018-08-10 |
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