CN110740414A - Automatic processing equipment for moving coil sound film assembly - Google Patents
Automatic processing equipment for moving coil sound film assembly Download PDFInfo
- Publication number
- CN110740414A CN110740414A CN201810805571.0A CN201810805571A CN110740414A CN 110740414 A CN110740414 A CN 110740414A CN 201810805571 A CN201810805571 A CN 201810805571A CN 110740414 A CN110740414 A CN 110740414A
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- processing equipment
- moving coil
- sound film
- automatic processing
- voice
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- 238000012545 processing Methods 0.000 title claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 113
- 238000005452 bending Methods 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 claims abstract description 3
- 230000000903 blocking effect Effects 0.000 claims abstract 9
- 239000003292 glue Substances 0.000 claims description 16
- 239000000725 suspension Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- WABPQHHGFIMREM-OUBTZVSYSA-N lead-208 Chemical compound [208Pb] WABPQHHGFIMREM-OUBTZVSYSA-N 0.000 description 11
- 239000012528 membrane Substances 0.000 description 8
- 230000006872 improvement Effects 0.000 description 6
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention relates to automatic processing equipment for a moving coil voice diaphragm assembly, which comprises an automatic wire bending mechanism, wherein the automatic wire bending mechanism is provided with a telescopic cylinder, a motor, a connecting rod, a blocking arm, a voice diaphragm bearing rotating mechanism, a clamping jaw cylinder and pairs of clamping jaws connected with the clamping jaw cylinder, the telescopic cylinder can drive the motor and the connecting rod to move up and down, the motor can drive the connecting rod to rotate, the voice diaphragm bearing rotating mechanism comprises a second motor and a voice diaphragm bearing used for positioning the moving coil voice diaphragm assembly, the second motor can drive the voice diaphragm bearing to drive the voice diaphragm assembly to rotate synchronously with the blocking arm so as to enable a lead of a voice coil to be supported on the blocking arm to be bent, and the clamping jaw cylinder can drive the pair of clamping jaws to retreat after clamping the lead so as to enable the lead to keep tension in the bending process, so that automatic wire bending is realized, the consistency of a product is ensured, and the production efficiency is improved.
Description
Technical Field
The invention relates to automatic production equipment in the acoustic industry, in particular to automatic processing equipment for moving coil sound film assemblies.
Background
The production mode of current movable coil sound membrane subassembly is the manual work and uses the tool operation, and the operator packs into different tools with diaphragm and voice coil loudspeaker voice coil respectively after, uses the point gum machine to glue diaphragm point center, then, with diaphragm tool and voice coil loudspeaker voice coil tool lock after, through the UV lamp solidification, then, takes off the voice coil loudspeaker voice coil tool (voice coil loudspeaker voice coil and diaphragm have been fixed on the diaphragm tool this moment), and the operator carries out the camber line and fixes the point and glue to the voice coil loudspeaker voice coil lead wire, and at last, to the operation of voice coil loudspeaker voice coil lead wire camber line track point white oil.
The existing manual operation mode needs more manpower, has low production efficiency (average 175PCS/H), and is difficult to meet the requirements of customers, wherein the voice coil bending line has high requirement on the operation proficiency of operators, consumes long time, has poor consistency, is difficult to produce in batches, causes uneven product quality, and is the bottleneck of the production of the moving coil voice diaphragm assembly at present.
Therefore, it is necessary to design new automatic processing equipment for moving coil sound diaphragm assembly to solve the above technical problems.
Disclosure of Invention
The invention aims to provide automatic processing equipment for a moving coil sound membrane assembly, which has the advantage of improving the product quality.
automatic processing equipment for moving coil voice diaphragm assemblies comprises an automatic wire bending mechanism, wherein the automatic wire bending mechanism comprises a telescopic cylinder, a motor, a connecting rod, a baffle arm, a voice diaphragm bearing rotating mechanism, a clamping jaw cylinder and pairs of clamping jaws connected with the clamping jaw cylinder, the telescopic cylinder can drive the motor and the connecting rod to move up and down, the motor can drive the connecting rod to rotate, the connecting rod is connected between the motor and the baffle arm, the baffle arm is fixed at the bottom end of the connecting rod and can move up and down along with the connecting rod to enter and exit the moving coil voice diaphragm assembly, the voice diaphragm bearing rotating mechanism comprises a second motor and a voice diaphragm bearing seat used for positioning the moving coil voice diaphragm assembly, the second motor can drive the voice diaphragm bearing seat to drive the voice diaphragm assembly to rotate synchronously with the baffle arm so as to enable a lead of a voice coil to be supported on the baffle arm to be bent, the voice diaphragm can move below the baffle arm, and the cylinder can drive the pair of clamping jaws to clamp the lead and then exit the lead so as to maintain tension in the bending process.
The improvement of the invention in step is that the automatic processing equipment for the moving coil sound film component also comprises a turntable mechanism, and the sound film bearing seat rotating mechanism is fixed on the turntable mechanism and can move along the circumference line .
The improvement of the step is that the automatic processing equipment for the moving coil sound film component also comprises a film feeding mechanism used for conveying the film to the sound film bearing seat rotating mechanism.
The invention is further improved in that the automatic processing equipment for moving coil sound film assembly further comprises a center glue dispensing mechanism located on the moving path of the sound film base rotating mechanism for dispensing glue on the film.
The improvement of the invention in step is that the automatic processing equipment for moving coil voice film assembly further comprises a voice coil assembling mechanism located on the moving route of the voice film bearing rotating mechanism for assembling the voice coil on the film.
The improvement of the invention in step is that the automatic processing equipment for the moving coil sound film component also comprises a lead wire dispensing mechanism which is positioned on the moving route of the sound film bearing seat rotating mechanism and fixes the lead wire on the suspension edge.
The improvement of the invention in step is that the automatic processing equipment for moving coil sound film component also includes a white oil point mechanism on the moving route of the sound film bearing seat rotating mechanism for covering the white oil on the bending part of the lead wire to fix the bending part.
The improvement of the invention in step is that the automatic processing equipment for the moving coil sound film component also comprises an automatic blanking mechanism positioned on the moving route of the sound film bearing rotating mechanism.
The invention is further improved in that the sound film bearing seat rotating mechanism is provided with at least seven sound film bearing seat rotating mechanisms which are arranged at intervals on the periphery of the disc mechanism.
The invention is further improved by providing a groove at the abutting surface of pairs of clamping jaws and a cylinder fixed in the groove, wherein part of the surface of the cylinder is exposed out of the abutting surface.
The automatic processing equipment for the moving coil diaphragm assembly realizes automatic wire bending and glue dispensing in the production process of the moving coil diaphragm assembly by using the automatic wire bending mechanism, solves the problems of difficult manual wire bending operation, long time consumption, poor consistency and the like, greatly saves labor, improves the production efficiency and meets the requirements of customers.
Drawings
FIG. 1 is a schematic plan view of an automatic processing apparatus for moving coil voice diaphragm assembly according to the present invention.
Fig. 2 is a schematic perspective view of an automatic bending mechanism of the automatic processing equipment for moving coil sound membrane modules according to the present invention.
Fig. 3 is a schematic plan view of an automatic bending mechanism of the automatic processing apparatus for moving coil voice diaphragm assemblies according to the present invention.
Fig. 4 is a perspective view of the moving coil voice diaphragm assembly.
Fig. 5 is a schematic plan view of the moving coil voice diaphragm assembly.
Fig. 6 is a schematic view of the automatic wire bending mechanism of the automatic processing equipment for moving coil voice coil assemblies according to the present invention starting to bend the wire.
Fig. 7 is a schematic diagram of the automatic wire bending mechanism of the automatic processing equipment for moving coil voice coil assemblies according to the present invention after completing wire bending.
Detailed Description
Referring to fig. 1 to 7, the automatic processing equipment 100 for a moving coil voice film assembly of the present invention is used to complete the assembly and processing of the diaphragm 201 and the voice coil 202 of the moving coil voice film assembly 200, the diaphragm 201 includes a base 203 for providing a vibration function, a floating edge 204 surrounding the periphery of the base 203, and an accommodating space 205 formed between the base 203 and the floating edge 204, the voice coil 202 includes a main body 207 and a lead 208 extending outward from the main body 207, the lead 208 has a bending portion 209 located in the accommodating space 205, and the shape of the bending portion 209 is closely related to the sound quality of the moving coil voice film assembly 200.
The automatic processing equipment 100 for the moving coil voice diaphragm assembly comprises a turntable mechanism 10, a diaphragm feeding mechanism 20, a center glue dispensing mechanism 30, a voice coil assembling mechanism 40, an automatic wire bending mechanism 50, a lead glue dispensing mechanism 60, a white oil dispensing mechanism 70 and an automatic blanking mechanism 80. The diaphragm feeding mechanism 20, the dispensing mechanism 30, the voice coil assembling mechanism 40, the automatic wire bending mechanism 50, the dispensing mechanism 60, the white oil dispensing mechanism 70 and the automatic blanking mechanism 80 are sequentially arranged outside the turntable mechanism 10 along a circumferential line in a surrounding manner.
The dial mechanism 10 is electrically controlled to be rotatable clockwise or counterclockwise.
The diaphragm feeding mechanism 20 is used to transfer the diaphragm 201 to the diaphragm seat rotating mechanism 55 of the automatic bending mechanism 50, and the structure of the diaphragm seat rotating mechanism 55 will be described later.
The dispensing mechanism 30 is used to apply glue to the substrate 203 of the membrane 201.
The voice coil assembly mechanism 40 is used for assembling the voice coil 202 on the diaphragm 201, and the main body 207 of the voice coil 202 is located in the accommodating space 205 and is adhered together with the base 203 of the diaphragm 201 through glue.
The automatic wire bending mechanism 50 comprises a telescopic cylinder 51, an th motor 52, a connecting rod 53, a baffle arm 54 and a voice diaphragm support rotating mechanism 55, wherein the telescopic cylinder 51 is used for driving the th motor 52 and the connecting rod 53 to move up and down, the connecting rod 53 is connected between the th motor 52 and the baffle arm 54, and the baffle arm 54 is fixed at the bottom end of the connecting rod 53 and can move up and down along with the connecting rod 53 to enter and exit the accommodating space 205 of the diaphragm 201.
At least seven sound film bearing rotating mechanisms 55 are arranged at intervals along the outer circumferential edge of the turntable mechanism 10, so that the diaphragm feeding mechanism 20, the center dispensing mechanism 30, the voice coil assembling mechanism 40, the automatic wire bending mechanism 50, the wire dispensing mechanism 60, the white oil dispensing mechanism 70 and the automatic blanking mechanism 80 can work simultaneously, each sound film bearing rotating mechanism 55 comprises a second motor 551 and a sound film bearing 552 for positioning the diaphragm 201, the second motor 551 drives the sound film bearing 552 to drive the diaphragm 201 to rotate through belt transmission, and the sound film bearing 552 is located below the baffle arm 54.
The automatic wire bending mechanism 50 further comprises a clamping jaw cylinder 57 and pairs of clamping jaws 58 connected with the clamping jaw cylinder 57, the pair of clamping jaws 58 can be opened and closed under the driving of the clamping jaw cylinder 57, a groove 581 and a cylinder 582 fixed in the groove 581 are arranged at the butt joint surface of the pair of clamping jaws 58, and part of the surface of the cylinder 582 is exposed at the butt joint surface, so that the clamping area of the clamping jaws 58 to the lead 208 of the voice coil 202 can be increased.
The automatic wire bending mechanism 50 further includes a wire pressing cylinder 591 and a pressing block 592 which is driven by the wire pressing cylinder 591 to move up and down.
The wire dispensing mechanism 60 is used to drop glue on the floating edge 204 of the membrane 201, and fix the wire 208 to the floating edge 204.
The white oil dispensing mechanism 70 covers the bent portion 209 of the lead 208 with white oil, and fixes the bent portion 209 to prevent the bent portion 209 from being deformed.
The automatic blanking mechanism 80 is used to take out the moving coil voice diaphragm assembly 200.
When the automatic processing equipment 100 for the moving coil sound film assembly works, the method comprises the following steps:
1. the turntable mechanism 10 rotates, and the membrane feeding mechanism 20 transfers the membrane 201 to the membrane bearing rotating mechanism 55;
2. the voice diaphragm bearing rotating mechanism 55 moves to the position of the central glue dispensing mechanism 30 along the circumferential line along with the turntable mechanism 10, and the central glue dispensing mechanism 30 finishes the action of dispensing on the diaphragm 201;
3. the voice diaphragm bearing rotating mechanism 55 moves to the position of the voice coil assembling mechanism 40, the voice coil assembling mechanism 40 assembles and fixes the voice coil 202 on the base 203 of the diaphragm 201, and the lead 208 extends out of the diaphragm 201;
4. the sound film bearing rotating mechanism 55 moves to the position of the automatic wire bending mechanism 50, and the telescopic cylinder 51 drives the baffle arm 54 to extend into the accommodating space 205 of the film 201;
5. the clamping jaw air cylinder 57 drives the clamping jaw 58 to clamp the lead 208 and then retreat, so that the lead is kept at constant tension;
6., the motor 51 drives the stop arm 54 to rotate, meanwhile, the second motor 551 drives the sound film bearing 552 to drive the diaphragm 201 to rotate synchronously, the lead 208 is bent to a required angle, the lead 208 is provided with a bending part 209 positioned in the accommodating space 205, the wire pressing cylinder 58 drives the pressing block 59 to press downwards to fix the lead 208, the stop arm 54 returns, the clamping jaw 58 is loosened to finish automatic wire bending of the moving coil sound film assembly 200, the wire bending angle and the wire outlet position can be debugged, the shape of the carrier can not be limited, and various model requirements of the moving coil sound film assembly 200 can be met;
7. the voice diaphragm bearing rotating mechanism 55 moves to the wire dispensing mechanism 60, the wire dispensing mechanism 60 drops glue on the suspension edge 204, and the lead 208 is fixed on the suspension edge 204;
8. the voice film bearing seat rotating mechanism 55 moves to the white oil dispensing mechanism 70, the white oil dispensing mechanism 70 covers the bent part 209 of the lead 208 with white oil, and the bent part 209 is prevented from being deformed;
finally, the voice diaphragm support rotating mechanism 55 moves to the position of the automatic blanking mechanism 80, and the moving coil voice diaphragm assembly 200 is taken out.
The automatic processing equipment 100 for the moving coil diaphragm assembly realizes automatic wire bending and glue dispensing in the production of the moving coil diaphragm assembly 200 through the ingenious matching of all mechanisms, solves the problems of difficult manual wire bending operation, long time consumption, poor consistency and the like, greatly saves manpower, improves the production efficiency and meets the requirements of customers.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.
Claims (10)
- The automatic processing equipment for the moving coil sound film assembly comprises an automatic wire bending mechanism, wherein the automatic wire bending mechanism is provided with a telescopic cylinder, a motor, a connecting rod, a blocking arm, a sound film bearing rotating mechanism, a clamping jaw cylinder and pairs of clamping jaws connected with the clamping jaw cylinder, and is characterized in that the telescopic cylinder can drive a motor and the connecting rod to move up and down, the motor can drive the connecting rod to rotate, the connecting rod is connected between a motor and the blocking arm, the blocking arm is fixed at the bottom end of the connecting rod and can move up and down along with the connecting rod to enter and exit the moving coil sound film assembly, the sound film bearing rotating mechanism comprises a second motor and a sound film bearing used for positioning the moving coil sound film assembly, the second motor can drive the sound film bearing to drive the sound film assembly to synchronously rotate with the blocking arm so as to enable a lead of a voice coil to be supported on the blocking arm to be bent, the sound film bearing can move below the blocking arm, and the clamping jaw can drive the pair of clamping jaws to clamp the lead to move back and enable the lead to maintain tension in the bending process.
- 2. The automatic processing equipment for the moving coil sound diaphragm assembly according to claim 1, wherein the automatic processing equipment for the moving coil sound diaphragm assembly further comprises a turntable mechanism, and the sound diaphragm bearing rotating mechanism is fixed on the turntable mechanism and can move along circumferential lines.
- 3. The automatic processing equipment of moving coil voice diaphragm assembly according to claim 2, characterized in that: the automatic processing equipment for the moving coil sound film assembly further comprises a film feeding mechanism used for conveying the film to the sound film bearing rotating mechanism.
- 4. The automatic processing equipment of moving coil voice diaphragm assembly according to claim 3, characterized in that: the automatic processing equipment for the moving coil sound film assembly further comprises a center glue dispensing mechanism positioned on the moving route of the sound film bearing rotating mechanism and used for coating glue on the film.
- 5. The automatic processing equipment of moving coil voice diaphragm assembly according to claim 3, characterized in that: the automatic processing equipment for the moving coil voice diaphragm assembly also comprises a voice coil assembling mechanism positioned on the moving route of the voice diaphragm bearing rotating mechanism and used for assembling the voice coil on the diaphragm.
- 6. The automatic processing equipment of moving coil voice diaphragm assembly according to claim 3, characterized in that: the automatic processing equipment for the moving coil sound film assembly further comprises a lead dispensing mechanism positioned on the moving route of the sound film bearing rotating mechanism, and leads are fixed on the suspension edges.
- 7. The automatic processing equipment of moving coil voice diaphragm assembly according to claim 3, characterized in that: the automatic processing equipment for the moving coil sound film assembly further comprises a white oil point mechanism positioned on the moving route of the sound film bearing rotating mechanism and used for covering white oil on the bent part of the lead so as to fix the bent part.
- 8. The automatic processing equipment of moving coil voice diaphragm assembly according to claim 3, characterized in that: the automatic processing equipment for the moving coil sound film assembly further comprises an automatic blanking mechanism positioned on the moving route of the sound film bearing rotating mechanism.
- 9. The automatic processing equipment of moving coil voice diaphragm assembly according to claim 1, characterized in that: the sound film bearing seat rotating mechanisms are at least seven and are arranged on the periphery of the disc mechanism at intervals.
- 10. The automatic processing equipment for the moving coil sound film assembly as claimed in claim 1, wherein a groove and a cylinder fixed in the groove are arranged at the abutting surface of the pairs of clamping jaws, and part of the surface of the cylinder is exposed out of the abutting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810805571.0A CN110740414A (en) | 2018-07-20 | 2018-07-20 | Automatic processing equipment for moving coil sound film assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810805571.0A CN110740414A (en) | 2018-07-20 | 2018-07-20 | Automatic processing equipment for moving coil sound film assembly |
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| Publication Number | Publication Date |
|---|---|
| CN110740414A true CN110740414A (en) | 2020-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810805571.0A Pending CN110740414A (en) | 2018-07-20 | 2018-07-20 | Automatic processing equipment for moving coil sound film assembly |
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| Country | Link |
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| CN (1) | CN110740414A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116900707A (en) * | 2023-09-15 | 2023-10-20 | 深圳市日丽丰科技有限公司 | Equipment for assembling electric toothbrush |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202435594U (en) * | 2011-12-29 | 2012-09-12 | 瑞声光电科技(常州)有限公司 | Sounding device |
| CN206194525U (en) * | 2016-09-24 | 2017-05-24 | 昆山市张浦镇科伟自动化设备厂 | Automatic equipment of bending of inductance coils |
| US20170164082A1 (en) * | 2015-12-08 | 2017-06-08 | Fortune Grand Technology Inc. | Support frame for thin mini speaker structure and method of assembling lead wires to support frame of thin mini speaker structure |
| CN107135459A (en) * | 2017-06-06 | 2017-09-05 | 汉得利（常州）电子股份有限公司 | The automatic wire arrangement mechanism of line is managed for voice coil loudspeaker voice coil |
| CN206948623U (en) * | 2017-07-06 | 2018-01-30 | 谢校伟 | Sound film draws lead glue machine |
| CN107846654A (en) * | 2016-09-18 | 2018-03-27 | 声电电子科技(惠州)有限公司 | A kind of voice coil loudspeaker voice coil conductive line bends tool and bending method |
| CN208424779U (en) * | 2018-07-20 | 2019-01-22 | 常州市三字智能科技有限公司 | Moving-coil sound membrane module automatic processing device |
-
2018
- 2018-07-20 CN CN201810805571.0A patent/CN110740414A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202435594U (en) * | 2011-12-29 | 2012-09-12 | 瑞声光电科技(常州)有限公司 | Sounding device |
| US20170164082A1 (en) * | 2015-12-08 | 2017-06-08 | Fortune Grand Technology Inc. | Support frame for thin mini speaker structure and method of assembling lead wires to support frame of thin mini speaker structure |
| CN107846654A (en) * | 2016-09-18 | 2018-03-27 | 声电电子科技(惠州)有限公司 | A kind of voice coil loudspeaker voice coil conductive line bends tool and bending method |
| CN206194525U (en) * | 2016-09-24 | 2017-05-24 | 昆山市张浦镇科伟自动化设备厂 | Automatic equipment of bending of inductance coils |
| CN107135459A (en) * | 2017-06-06 | 2017-09-05 | 汉得利（常州）电子股份有限公司 | The automatic wire arrangement mechanism of line is managed for voice coil loudspeaker voice coil |
| CN206948623U (en) * | 2017-07-06 | 2018-01-30 | 谢校伟 | Sound film draws lead glue machine |
| CN208424779U (en) * | 2018-07-20 | 2019-01-22 | 常州市三字智能科技有限公司 | Moving-coil sound membrane module automatic processing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116900707A (en) * | 2023-09-15 | 2023-10-20 | 深圳市日丽丰科技有限公司 | Equipment for assembling electric toothbrush |
| CN116900707B (en) * | 2023-09-15 | 2023-11-24 | 深圳市日丽丰科技有限公司 | Equipment for assembling electric toothbrush |
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