CN112025815A - SMT circuit board production is with equipment that provides oneself protection to cutting head - Google Patents
SMT circuit board production is with equipment that provides oneself protection to cutting head Download PDFInfo
- Publication number
- CN112025815A CN112025815A CN202010920269.7A CN202010920269A CN112025815A CN 112025815 A CN112025815 A CN 112025815A CN 202010920269 A CN202010920269 A CN 202010920269A CN 112025815 A CN112025815 A CN 112025815A
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- Prior art keywords
- cutting head
- seat
- supporting seat
- fixedly connected
- protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005520 cutting process Methods 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000004064 recycling Methods 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 2
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 description 8
- 230000006698 induction Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/007—Control means comprising cameras, vision or image processing systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/045—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member for thin material, e.g. for sheets, strips or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/18—Means for removing cut-out material or waste
- B26D7/1845—Means for removing cut-out material or waste by non mechanical means
- B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
- H05K3/0052—Depaneling, i.e. dividing a panel into circuit boards; Working of the edges of circuit boards
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention belongs to the technical field of SMT circuit boards, and particularly relates to equipment for providing self protection for a cutting head in SMT circuit board production. When the telescopic device is used, the telescopic spring and the cutting head are automatically retracted under the action of the telescopic rod, the telescopic device stops working at the moment, a worker does not need to close the telescopic device by himself, certain workload is reduced, and meanwhile the service life of the telescopic device is prolonged to a certain extent.
Description
Technical Field
The invention belongs to the technical field of SMT circuit boards, and particularly relates to equipment for providing self-protection for a cutting head in SMT circuit board production.
Background
SMT is a circuit assembly technology in which a pin-free or short-lead surface component, a chip component for midday, is mounted on the surface of a printed circuit board or other substrates, and resistance is soldered by reflow soldering or dip soldering, and the like.
The circuit board often needs to be cut in the production process of the SMT circuit board, so that the circuit board reaches normal specifications, in the working process of the cutting head, a worker is often required to stand aside for control, the cutting device needs to be stopped after cutting is completed, the operation is troublesome, the workload is large, if the cutting device does not stop working in time, the machine idles, the electric power is wasted, the machine damage is possibly caused, the service life is shortened, and therefore, in view of the above, research and improvement are carried out on the existing structure and deficiency, equipment for providing self protection for the cutting head in the production of the SMT circuit board is provided, and the purpose of achieving more practical value is expected.
Disclosure of Invention
In order to solve the technical problems, the invention provides a device for providing self-protection for a cutting head for SMT circuit board production, which is achieved by the following specific technical means:
an equipment for providing self-protection for a cutting head for SMT circuit board production comprises a workbench, wherein a placing plate is fixedly connected to the upper surface of the workbench, a threaded column is rotatably connected to the inside of the workbench, a threaded sleeve is sleeved on the outer surface of the threaded column, a telescopic rod is movably connected to one side of the threaded sleeve, one end of the telescopic rod penetrates through the inside of a supporting seat, a magnetic seat is fixedly connected to one end of the telescopic rod and located inside the supporting seat, a telescopic spring is movably connected to one side of the magnetic seat, an electric magnet is fixedly connected to one side of the telescopic spring, a cutting head is fixedly connected to one side of the electric magnet, a photosensitive resistor is arranged inside the supporting seat, a rotating gear is meshed with the outer surface of the threaded column, a pushing rod is movably connected to the surface of the rotating gear and located on the supporting seat, and a rotating rod is rotatably connected to, the one end fixedly connected with guide post of dwang, the one end of guide post runs through the inside at the magnet seat, the one end swing joint of guide post has the extension spring, the surface of extension spring is provided with the shrink bag, the left and right sides of shrink bag all is provided with the exhaust tube, the equal fixedly connected with support column in the left and right sides of magnet seat.
Further, the outer fixed surface who places the board is connected with the baffle, the lower surface of workstation is provided with the collection box, can retrieve the material that the cutting is good.
Furthermore, the outer fixed surface of the threaded sleeve is connected with a mounting seat matched with the supporting seat, and a groove with the same diameter as the telescopic rod is formed in the supporting seat, so that the telescopic rod can be conveniently moved.
Further, the length of magnetism seat is greater than the length of electric property magnet, the surface of running gear rotates and is connected with the pivot of the same diameter with the dwang.
Furthermore, the rear surface of the rotating gear is provided with a bearing seat with the same diameter as the push rod, and the surface of the supporting seat is provided with a rotating rod matched with the push rod, so that the push rod can rotate on the surface of the supporting seat at a certain angle.
Furthermore, a one-way valve is arranged inside the exhaust tube, and a groove matched with the guide post is formed inside the magnet seat.
Compared with the prior art, the invention has the following beneficial effects:
1. the equipment for providing self protection for the cutting head for the production of the SMT circuit board drives the threaded column to rotate through the external drive, and further drives the threaded sleeve on the surface to move left and right, so that the threaded sleeve drives the cutting head inside the supporting seat to cut the SMT circuit board on the surface of the placing plate to a certain extent; when the device is bright, the resistance value of the device is increased, the current is reduced, the current in the device is increased, the current of the electric magnet is increased, the repulsive force borne by the magnetic seat is larger than the elastic force of the telescopic spring, the telescopic spring and the cutting head are automatically retracted under the action of the telescopic rod, the device stops working at the moment, the device does not need to be automatically closed by a worker, certain workload is reduced, and meanwhile the service life of the device is prolonged to a certain extent.
2. The equipment for providing self protection for the cutting head for the production of the SMT circuit board drives the supporting seat to move by rotating the threaded column so that the threaded sleeve drives the supporting seat to move, meanwhile, the supporting seat drives the push rod to move so that the push rod drives the rotating gear to rotate on the surface of the threaded column, the rotating gear drives the rotating rod to rotate so that the rotating rod drives the guide column to move up and down in the magnet seat, when the guide column moves up and down in the magnet seat, a magnetic induction line can be cut in the magnet seat to generate a certain degree of current, when a part of conductors of a closed loop do cutting magnetic induction line movement in a magnetic field, the magnetic flux in the closed loop can be changed to generate induced electromotive force in the closed loop so as to generate current which is called induced current, and part of dust impurities are adsorbed to the outer surface of the shrinkage bag, when the guide post reciprocates, can drive the concertina spring of its lower extreme and take place deformation, and then the concertina spring drives the deformation that the shrink bag takes place the certain degree, make its increase in volume of shrink bag, when its inside increase in volume, can produce certain suction, later will be attached to the impurity on shrink bag surface and some impurity on workstation surface through the exhaust tube and adsorb the processing, guaranteed the clean and tidy nature on workstation surface, do not need the staff to clean, make the staff bring the convenience when using.
Drawings
FIG. 1 is a schematic view of a cross-sectional elevation view of a work table according to the present invention;
FIG. 2 is a schematic view of a partial threaded post of the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a schematic view of a portion of the rotary gear of the present invention;
FIG. 5 is a schematic illustration of a push rod portion construction of the present invention;
fig. 6 is an enlarged view at B in fig. 5.
In the figure: 1. a work table; 2. placing the plate; 3. a threaded post; 4. a threaded sleeve; 5. a telescopic rod; 6. a supporting seat; 7. a magnetic base; 8. a tension spring; 9. an electrically conductive magnet; 10. a cutting head; 11. a photoresistor; 12. a rotating gear; 13. a push rod; 14. rotating the rod; 15. a guide post; 16. a magnet holder; 17. a tension spring; 18. a contracting balloon; 19. an air exhaust pipe; 20. and (4) a support column.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in figures 1 to 6:
the invention provides a device for providing self protection for a cutting head in SMT circuit board production, which comprises a workbench 1, wherein the upper surface of the workbench 1 is fixedly connected with a placing plate 2, the outer surface of the placing plate 2 is fixedly connected with a baffle, the lower surface of the workbench 1 is provided with a recycling box, a threaded column 3 is rotatably connected inside the workbench 1, the outer surface of the threaded column 3 is sleeved with a threaded sleeve 4, one side of the threaded sleeve 4 is movably connected with a telescopic rod 5, one end of the telescopic rod 5 penetrates through the inside of a supporting seat 6, one end of the telescopic rod 5 is fixedly connected with a magnetic seat 7 inside the supporting seat 6, the light is small due to the fact that the telescopic rod is in contact with an SMT circuit board, the light on a photosensitive resistor 11 inside the supporting seat 6 is small, after cutting is finished, the light is bright, the light on the photosensitive resistor 11 is large, and according to, when the brightness of the LED lamp is increased, the resistance of the LED lamp is reduced, and the current is increased; when the light is less, the resistance value of the magnetic base is increased, the current is reduced, the current in the magnetic base is increased, the current of the electric magnet 9 is increased, the attractive force on the magnetic base 7 is larger than the elastic force of the telescopic spring 8, the telescopic spring 8 and the cutting head 10 are automatically retracted under the action of the telescopic rod 5, the work is stopped at the moment, and the automatic closing of a worker is not needed.
One side of the magnetic seat 7 is movably connected with a telescopic spring 8, one side of the telescopic spring 8 is fixedly connected with an electric magnet 9, one side of the electric magnet 9 is fixedly connected with a cutting head 10, the inside of the supporting seat 6 is provided with a photosensitive resistor 11, the outer surface of the threaded sleeve 4 is fixedly connected with a mounting seat matched with the supporting seat 6, the inside of the supporting seat 6 is provided with a groove with the same diameter as the telescopic rod 5, the outer surface of the threaded column 3 is meshed with a rotating gear 12, the surface of the rotating gear 12 and the surface of the supporting seat 6 are movably connected with a push rod 13, the rear surface of the rotating gear 12 is provided with a bearing seat with the same diameter as the push rod 13, the surface of the supporting seat 6 is provided with a rotating rod matched with the push rod 13, the surface of the rotating gear 12 is rotatably connected with a rotating rod 14, when the threaded column 3 rotates to drive, the pushing rod 13 drives the rotating gear 12 to rotate on the surface of the threaded column 3, so that the rotating gear 12 drives the rotating rod 14 to rotate, and the rotating rod 14 drives the guide column 15 to move up and down inside the magnet seat 16.
One end of the rotating rod 14 is fixedly connected with a guide post 15, the length of the magnetic seat 7 is greater than that of the electric magnet 9, the outer surface of the rotating gear 12 is rotatably connected with a rotating shaft with the same diameter as that of the rotating rod 14, one end of the guide post 15 penetrates through the inside of the magnet seat 16, a one-way valve is arranged inside an exhaust tube 19, a groove matched with the guide post 15 is formed inside the magnet seat 16, one end of the guide post 15 is movably connected with an extension spring 17, the outer surface of the extension spring is provided with a contraction bag 18, the left side and the right side of the contraction bag 18 are both provided with the exhaust tube 19, the left side and the right side of the magnet seat 16 are both fixedly connected with support columns 20, when the guide post 15 moves up and down, the extension spring at the lower end of the guide post is driven to deform, and then the extension spring drives the contraction bag 18 to deform to a certain, impurities attached to the outer surface of the shrinkage bag 18 and impurities on the surface of the workbench 1 are adsorbed through the exhaust tube 19, so that the cleanness of the surface of the workbench 1 is guaranteed, cleaning by workers is not needed, and convenience is brought to the workers during use.
The specific use mode and function of the embodiment are as follows: when the device is normally used, the threaded column 3 is driven to rotate through external drive, and then the threaded sleeve 4 on the surface of the threaded column is driven to move left and right, the threaded sleeve 4 drives the cutting head 10 inside the supporting seat 6 to cut an SMT circuit board on the surface of the placing plate 2 to a certain extent, under the initial state, the elasticity of the telescopic spring 8 is larger than the attraction force of the electric magnet 9 to the magnetic seat 7, in the working process of the cutting head 10, because the cutting head is in contact with the SMT circuit board, the light is small, the light on the photosensitive resistor 11 inside the supporting seat 6 is small, after the cutting is finished, the light is bright, the light on the photosensitive resistor 11 is large, according to the characteristics of the photosensitive resistor 11, when the light on the photosensitive resistor is increased, the resistance of the photosensitive resistor is reduced, and; when the device is bright, the resistance value of the device is increased, the current is reduced, the current in the device is increased, the current of the electric magnet 9 is increased, the attractive force of the magnetic seat 7 is larger than the elastic force of the telescopic spring 8, the telescopic spring 8 and the cutting head 10 are automatically retracted under the action of the telescopic rod 5, the device stops working at the moment, a worker does not need to close the device by himself, certain workload is reduced, and meanwhile the service life of the device is prolonged to a certain extent.
When the threaded column 3 rotates to enable the threaded sleeve 4 to drive the supporting seat 6 to move, the supporting seat 6 drives the pushing rod 13 to move simultaneously, the pushing rod 13 drives the rotating gear 12 to rotate on the surface of the threaded column 3, so that the rotating gear 12 drives the rotating rod 14 to rotate, the rotating rod 14 drives the guide column 15 to move up and down in the magnet seat 16, when the guide column 15 moves up and down in the magnet seat 16, a magnetic induction line is cut in the magnet seat 16 to generate a certain degree of current, when a part of conductors of a closed loop move in a magnetic field to cut the magnetic induction line, the magnetic flux in the closed loop changes, induced electromotive force is generated in the closed loop, so that current is generated, the current is called induced current, part of dust impurities are adsorbed to the outer surface of the shrinkage bag 18, and when the guide column 15 moves up and down, can drive the extension spring of its lower extreme and take place deformation, and then it takes place the deformation of certain degree to extend the spring and drive the shrink bag 18, make its volume increase of shrink bag 18, when its inside volume increase, can produce certain suction force, later will adhere to the impurity of shrink bag 18 surface and some impurity that are in workstation 1 surface through exhaust tube 19 and adsorb the processing, the clean and tidy nature on workstation 1 surface has been guaranteed, do not need the staff to clean, make the staff bring the convenience when using, and the inside at exhaust tube 19 has set up the check valve, so when shrink bag 18 takes place to stretch out and draw back, its inside dust can not extruded once more and go out, it is more convenient to use.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.
Claims (6)
1. The utility model provides a production of SMT circuit board is with providing equipment of self-protection to cutting head, includes workstation (1), its characterized in that: the upper surface of the workbench (1) is fixedly connected with a placing plate (2), the interior of the workbench (1) is rotatably connected with a threaded column (3), the outer surface of the threaded column (3) is sleeved with a threaded sleeve (4), one side of the threaded sleeve (4) is movably connected with a telescopic rod (5), one end of the telescopic rod (5) penetrates through the interior of a supporting seat (6), one end of the telescopic rod (5) is fixedly connected with a magnetic seat (7) and is positioned in the interior of the supporting seat (6), one side of the magnetic seat (7) is movably connected with a telescopic spring (8), one side of the telescopic spring (8) is fixedly connected with an electric magnet (9), one side of the electric magnet (9) is fixedly connected with a cutting head (10), the interior of the supporting seat (6) is provided with a photosensitive resistor (11), the outer surface of the threaded column (3) is meshed with a rotating gear (12), the surface of running gear (12) and the surperficial swing joint that is located supporting seat (6) have propelling movement pole (13), the surface rotation of running gear (12) is connected with dwang (14), one end fixedly connected with guide post (15) of dwang (14), the inside at magnet seat (16) is run through to the one end of guide post (15), the one end swing joint of guide post (15) has extension spring (17), the surface that extends spring (17) is provided with shrink bag (18), the left and right sides of shrink bag (18) all is provided with exhaust tube (19), the equal fixedly connected with support column (20) of the left and right sides of magnet seat (16).
2. The apparatus for providing self-protection for the cutting head in the production of SMT circuit boards according to claim 1, wherein: the outer surface of the placing plate (2) is fixedly connected with a baffle, and the lower surface of the workbench (1) is provided with a recycling box.
3. The apparatus for providing self-protection for the cutting head in the production of SMT circuit boards according to claim 1, wherein: the outer fixed surface of thread bush (4) is connected with the mount pad of supporting seat (6) looks adaptation, the inside of supporting seat (6) is seted up with telescopic link (5) isodiametric groove.
4. The apparatus for providing self-protection for the cutting head in the production of SMT circuit boards according to claim 1, wherein: the length of the magnetic seat (7) is greater than that of the electric magnet (9), and the outer surface of the rotating gear (12) is rotatably connected with a rotating shaft with the diameter equal to that of the rotating rod (14).
5. The apparatus for providing self-protection for the cutting head in the production of SMT circuit boards according to claim 1, wherein: the rear surface of the rotating gear (12) is provided with a bearing seat with the same diameter as the push rod (13), and the surface of the supporting seat (6) is provided with a rotating rod matched with the push rod (13).
6. The apparatus for providing self-protection for the cutting head in the production of SMT circuit boards according to claim 1, wherein: the inside of exhaust tube (19) is provided with the check valve, the inside of magnet seat (16) is seted up the groove with guide post (15) looks adaptation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010920269.7A CN112025815A (en) | 2020-09-04 | 2020-09-04 | SMT circuit board production is with equipment that provides oneself protection to cutting head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010920269.7A CN112025815A (en) | 2020-09-04 | 2020-09-04 | SMT circuit board production is with equipment that provides oneself protection to cutting head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112025815A true CN112025815A (en) | 2020-12-04 |
Family
ID=73590523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010920269.7A Withdrawn CN112025815A (en) | 2020-09-04 | 2020-09-04 | SMT circuit board production is with equipment that provides oneself protection to cutting head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112025815A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658872A (en) * | 2020-12-22 | 2021-04-16 | 刀智宝 | Edge sealing equipment for round solid wood dining table plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150360381A1 (en) * | 2014-06-17 | 2015-12-17 | Key Technology, Inc. | Cutting Apparatus |
| CN108162030A (en) * | 2017-12-08 | 2018-06-15 | 湖南辉讯企业管理有限公司 | A kind of Chinese medicine processing equipment for having the function of to continue uninterruptedly to be sliced |
| CN108890747A (en) * | 2018-07-26 | 2018-11-27 | 盐城市裕正精密机械有限公司 | A kind of severing sensing device of cutting machine |
| CN208663883U (en) * | 2018-05-24 | 2019-03-29 | 深圳市点虹电子科技有限公司 | A kind of printed circuit board cutting equipment |
| CN110497457A (en) * | 2019-08-27 | 2019-11-26 | 长兴创智科技有限公司 | A kind of toy production paper tube process equipment |
-
2020
- 2020-09-04 CN CN202010920269.7A patent/CN112025815A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150360381A1 (en) * | 2014-06-17 | 2015-12-17 | Key Technology, Inc. | Cutting Apparatus |
| CN108162030A (en) * | 2017-12-08 | 2018-06-15 | 湖南辉讯企业管理有限公司 | A kind of Chinese medicine processing equipment for having the function of to continue uninterruptedly to be sliced |
| CN208663883U (en) * | 2018-05-24 | 2019-03-29 | 深圳市点虹电子科技有限公司 | A kind of printed circuit board cutting equipment |
| CN108890747A (en) * | 2018-07-26 | 2018-11-27 | 盐城市裕正精密机械有限公司 | A kind of severing sensing device of cutting machine |
| CN110497457A (en) * | 2019-08-27 | 2019-11-26 | 长兴创智科技有限公司 | A kind of toy production paper tube process equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658872A (en) * | 2020-12-22 | 2021-04-16 | 刀智宝 | Edge sealing equipment for round solid wood dining table plate |
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Application publication date: 20201204 |