CN216857147U - Scraper assembly and processing equipment - Google Patents
Scraper assembly and processing equipment Download PDFInfo
- Publication number
- CN216857147U CN216857147U CN202122963913.1U CN202122963913U CN216857147U CN 216857147 U CN216857147 U CN 216857147U CN 202122963913 U CN202122963913 U CN 202122963913U CN 216857147 U CN216857147 U CN 216857147U
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- scraper
- unit
- base
- doctor
- scraper unit
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- 230000033001 locomotion Effects 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 abstract description 10
- 239000003292 glue Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
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Abstract
The utility model relates to a scraper component and processing equipment, wherein the scraper component is matched with a base and comprises a scraper unit and a driving unit; the base is provided with a scraper groove, the scraper unit has a first position and a second position relative to the base, and when the scraper unit is at the first position, a knife edge of the scraper unit is positioned in the scraper groove; when the scraper unit is at the second position, the knife edge of the scraper unit is positioned outside the scraper groove and is at a position to be cleaned relative to the target object; the driving unit drives the scraper unit to rotate relative to the base, so that the scraper unit can be switched between a first position and a second position. In the utility model, the driving unit drives the scraper unit to rotate to be close to the spray head so as to move to the position to be cleaned, compared with the prior art, the scraper unit does not need to move up and down, the volume and the weight of the load have little influence on the control, so the scraper unit can have a smaller movement stroke in the vertical direction, and the volume of the whole processing equipment can be reduced.
Description
Technical Field
The utility model belongs to the technical field of PCB processing, and particularly relates to a scraper component and processing equipment.
Background
As shown in fig. 1, the processing equipment for dispensing or spraying is provided with a nozzle 1a and a scraper assembly 2a, and after dispensing or spraying is completed, the scraper assembly 2a is required to clean the residue at the liquid outlet of the nozzle 1 a.
When the scraper assembly 2a is in the position to be cleaned, the edge of the scraper unit 22a can be tangent to the end surface of the liquid outlet of the spray head 1a, and then the spray head 1a is controlled to move left and right relative to the scraper unit 22a, so that the scraper unit 22a can clean the residue at the liquid outlet of the spray head 1 a.
At present, the driving unit 21a generally includes a motor 23a and a screw driving mechanism 24a, the motor 23a is connected with a screw of the screw driving mechanism 24a, and the scraper unit 22a is mounted on a nut of the screw driving mechanism 24 a. The motor 23a is rotated to drive the nut and the doctor unit 22a up and down.
In this arrangement, the load of the motor 23a (i.e., the blade unit 22a and the nut, etc.) is heavy and bulky, and a large distance is required between the initial position and the position to be cleaned to reserve a sufficient buffer space due to inertia, etc., which increases the volume of the processing apparatus.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the scraper component and the processing equipment are provided for solving the problem that a larger distance needs to be reserved between the initial position of the scraper unit and the position to be cleaned in the existing processing equipment.
In order to solve the above technical problem, an embodiment of the present invention provides a scraper assembly, configured to cooperate with a base, where the base is provided with a scraper slot, and the scraper assembly includes a base, a scraper unit, and a driving unit; the scraper unit has a first position and a second position relative to the base, and when the scraper unit is located at the first position, the knife edge of the scraper unit is located in the scraper groove; when the scraper unit is located at the second position, the knife edge of the scraper unit is located outside the scraper groove and is located at a position to be cleaned relative to a target object; the driving unit is connected with the scraper unit and is used for driving the scraper unit to rotate relative to the base; when the scraper unit is located at the first position, the driving unit can drive the scraper unit to rotate to the second position along a first direction; when the scraper unit is located at the second position, the driving unit can drive the scraper unit to rotate to the first position along a second direction, and the first direction is opposite to the second direction.
Optionally, the scraper assembly further includes a base and a limiting member, and the limiting member is disposed on the base and is used for adjusting the second position of the scraper unit relative to the base.
Optionally, a threaded hole is formed in the base, and the threaded hole is communicated with the scraper groove; the limiting piece comprises a bolt, and the bolt is matched with the threaded hole so that the bolt can be close to or far away from the scraper unit; when the scraper unit rotates along the first direction, the scraper unit can abut against the bolt, and when the scraper unit rotates along the second direction, the scraper unit can be separated from the bolt.
Optionally, the blade unit is rotatably mounted in the blade channel.
Optionally, the blade unit does not protrude from the blade groove in a length direction of the blade groove.
Optionally, the scraper assembly further comprises a scraper seat disposed in the scraper groove; the scraper unit comprises a scraper shaft and a scraper blade; the scraper shaft is rotatably arranged on the scraper seat and is connected with the driving unit; the scraper blade is detachably mounted on the scraper shaft, and the edge of the scraper blade is the edge of the scraper unit.
Optionally, the scraper unit is rotatably mounted on the base, and the driving unit is a linear driving unit; the linear driving unit is arranged on the base and is rotationally connected with the scraper unit; the scraper unit and the rotating shaft of the scraper unit relative to the linear driving unit are arranged at intervals, so that the scraper unit can be pushed to rotate when the linear driving unit moves linearly.
Optionally, the driving unit includes a cylinder, a guiding mechanism and a connecting plate, the cylinder and the guiding mechanism are all arranged on the base, the cylinder is connected with the connecting plate, the connecting plate is connected with the scraper unit in a rotating mode, the cylinder is used for driving the connecting plate to move linearly so as to push the scraper unit to rotate, and the guiding unit is used for guiding the linear movement of the connecting plate.
Optionally, an inner concave structure is arranged on the base, the scraper groove penetrates through to be communicated with the inner concave structure, and the driving unit is installed in the inner concave structure.
In order to solve the technical problem, an embodiment of the present invention further provides a processing apparatus, which includes a base and the scraper assembly as described above, where the base is matched with the scraper assembly.
In the embodiment provided by the utility model, the driving unit drives the scraper unit to rotate to enable the scraper unit to be close to the spray head so as to move to the position to be cleaned, compared with the prior art that the scraper unit is driven to linearly move to the position to be cleaned, the scraper unit of the embodiment does not need to move up and down, the influence of the volume and the weight of the load on the control is not large, so that the scraper unit can have a smaller movement stroke in the vertical direction, the corresponding speed of the scraper assembly can be improved, and the volume of the whole processing equipment can be reduced.
In addition, in the embodiment provided by the utility model, when the scraper unit is not used, the blade of the scraper unit can be hidden in the scraper groove, so that people or other objects can be prevented from colliding with the blade, and the service life and the safety performance of the scraper unit are improved.
Drawings
FIG. 1 is a schematic view of a prior art doctor assembly in use with a showerhead assembly;
FIG. 2 is a first schematic view of a doctor assembly according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a second schematic view of a portion of a scraper assembly of an automobile according to an embodiment of the present invention;
FIG. 5 is an enlarged partial view of the area B in FIG. 3;
FIG. 6 is an enlarged partial view of the area C in FIG. 4;
fig. 7 is a partially enlarged schematic view of a region D in fig. 4.
The reference numerals in the specification are as follows:
10. a scraper assembly; 1. a base; 11. a scraper groove; 12. an upper surface; 13. a side surface; 14. a concave structure; 15. a lower surface; 16. a limiting threaded hole; 2. a scraper unit; 21. a card slot; 3. a drive unit; 31. a linear actuator; 32. a guide member; 33. a connecting plate; 331. a plate body; 332. a clamping block; 33. a fixing hole; 34. locking the threaded hole; 35. locking the bolt; 4. a scraper seat; 5. and a limiting member.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
As shown in fig. 2, the processing apparatus includes a nozzle and a scraper assembly 10, the nozzle can perform dispensing operation, and the scraper assembly 10 can clean the residual glue solution (or the glue formed after the glue solution is cured) at the sprayed liquid outlet, so as to prevent the residual glue solution or the glue from blocking the liquid outlet of the nozzle.
As shown in fig. 2 to 4, the processing apparatus further includes a base 1, and a blade assembly 10 is engaged with the base 1, wherein the blade assembly 10 includes a blade unit 2 and a driving unit 3. Be equipped with scraper groove 11 on base 1, drive unit 3 meets with scraper unit 2, and scraper unit 2 rotationally installs on base 1, and drive unit 3 is used for driving scraper unit 2 and rotates relative base 1.
In an embodiment the blade unit 2 has a first position and a second position relative to the base 1, wherein the blade edge of the blade unit 2 is located in the blade groove 11 when the blade unit 2 is in the first position; when the scraper unit 2 is located at the second position, the blade edge of the scraper unit 2 is located outside the scraper groove 11 and is located at a position to be cleaned relative to the spray head. The blade of the scraper unit 2 is located at a position to be cleaned relative to the nozzle, which may mean that the scraper unit 2 or the nozzle is driven to move relative to each other in the left-right (or front-back, etc.) direction so that the colloid with a certain thickness on the nozzle can be scraped off through the scraper unit 2, and at this time, the scraper unit 2 and the nozzle are arranged in the up-down direction. For example, when the knife edge of the scraper unit 2 is located at the position to be cleaned relative to the nozzle, the knife edge of the scraper unit 2 may be tangent to the end surface of the liquid outlet of the nozzle.
During use, when the scraper unit 2 is located at the first position, the driving unit 3 can drive the scraper unit 2 to rotate to the second position along the first direction; when the blade unit 2 is in the second position, the driving unit 3 can drive the blade unit 2 to rotate in a second direction to a first position, the first direction being opposite to the second direction.
In one embodiment, the first direction may be a clockwise direction and the second direction may be a counterclockwise direction. The driving unit 3 drives the scraper unit 2 to rotate clockwise, so that the knife edge of the scraper unit 2 moves to a second position, the knife edge of the scraper unit 2 is located below the spray head at the moment, and then the spray head is driven to move left and right through a corresponding driving device, so that the glue scraping operation is realized. After cleaning, the driving unit 3 drives the scraper unit 2 to rotate anticlockwise, so that the knife edge of the scraper unit 2 rotates into the groove again.
In this embodiment, the driving unit 3 drives the scraper unit 2 to rotate to make it close to the nozzle so as to move to the position to be cleaned, compared with the prior art that the scraper unit 2 is driven to move linearly to the position to be cleaned, the movement stroke of the scraper unit 2 of this embodiment is smaller, so that the corresponding speed of the scraper assembly 10 can be increased, and the volume of the whole processing equipment can be reduced. Meanwhile, with the arrangement of the present embodiment, the load of the driving unit 3 is small, and the power consumption can be reduced. In addition, when the scraper unit 2 is not used, the knife edge of the scraper unit 2 can be hidden in the scraper groove 11, so that people or other objects can be prevented from colliding with the knife edge, and the service life and the safety performance of the scraper unit 2 are improved.
As shown in fig. 2 to 4, the blade groove 11 is provided on the upper surface 12 of the base 1, and the driving unit 3 is mounted on the side surface 13 of the base 1. This may allow for greater integration of the doctor assembly 10, reducing the space occupied by the doctor assembly 10.
As shown in fig. 2 to 4, in one embodiment, the side 13 of the base 1 is provided with a concave structure 14, and the driving unit 3 is installed in the concave structure 14. This not only reduces the bulk of the overall doctor assembly 10, but also reduces the probability of the drive unit 3 colliding with foreign objects. In addition, the blade groove 11 may penetrate into communication with the recessed structure 14, which facilitates the connection of the drive unit 3 and the blade unit 2.
As shown in fig. 2 to 4, in an embodiment, the concave structure 14 penetrates from the upper surface 12 of the base 1 to the lower surface 15 of the base 1, so as to facilitate the manufacturing of the base 1 and the installation of the driving unit 3.
In one embodiment, the blade unit 2 is rotatably mounted in the blade channel 11, as shown in fig. 2 and 3, which further reduces the space occupied by the blade assembly 10. In addition, the blade unit 2 does not protrude from the blade groove 11 in the longitudinal direction of the blade groove 11, so that it is possible to prevent a person or other objects from colliding with the blade unit 2, and to improve the service life and safety of the blade unit 2.
As shown in fig. 5, in an embodiment, the scraper assembly 10 further includes a scraper seat 4, the scraper seat 4 is disposed in the scraper groove 11, and the scraper unit 2 includes a scraper shaft rotatably mounted on the scraper seat 4 and a scraper blade detachably mounted on the scraper shaft, and the edge of the scraper blade is the edge of the scraper unit 2. The scraper shaft is connected with the driving unit 3, and the driving unit 3 drives the scraper shaft to rotate so as to drive the scraper blade to rotate.
In one embodiment, the scraper seat 4 is provided in plurality, and each scraper seat 4 is arranged at intervals along the length direction of the scraper shaft. In addition, the scraper base 4 includes a base body and a bearing installed in the base body, and the scraper shaft is installed in the bearing.
As shown in fig. 2 and 4, in an embodiment, the driving unit 3 is a linear driving unit, which is connected to the base 1 and connected to the scraper unit 2, and the linear driving unit can move linearly relative to the base 1 to drive the scraper unit 2 to rotate.
As shown in fig. 2 and 4, in one embodiment, the linear driving unit includes a linear driver 31, a guide 32, and a coupling plate 33. Linear actuator 31 and guide 32 all set up on base 1, and linear actuator 31 meets with connecting plate 33, and connecting plate 33 is connected with scraper unit 2, and linear actuator 31 is used for driving connecting plate 33 rectilinear motion, and then promotes scraper unit 2 and rotate, and the guide unit is used for leading the rectilinear motion of connecting plate 33. In an actual product, the linear actuator 31 may be a linear air cylinder.
As shown in fig. 5 and 6, in an embodiment, the connecting plate 33 includes a plate body 331 and a clamping block 332, the plate body 331 is connected to the linear actuator 31, the clamping block 332 is fixed to the plate body 331, the scraper unit 2 is provided with the clamping slot 21, the clamping block 332 is disposed in the clamping slot 21, when the linear actuator 31 drives the connecting plate 33 to move linearly, the clamping block 332 can apply a force to a sidewall of the clamping slot 21, wherein a force applying direction of the clamping block 332 to the sidewall of the clamping slot 21 and a rotation axis (defined as a first rotation axis) of the scraper unit 2 relative to the base 1 are spaced apart by a certain distance, and the force applying direction of the clamping block 332 to the clamping slot 21 is not parallel to the first rotation axis, at this time, the sidewall of the clamping slot 21 can rotate and slide relative to the clamping block 332, so as to rotate the scraper unit 2. In addition, in practical products, the direction of the force applied by the latch 332 to the card slot 21 is generally perpendicular to the first rotating axis.
As shown in fig. 5 and 6, the catching groove 21 is disposed on an end surface of an end of the scraper unit 2 in the length direction close to the connecting plate 33, and penetrates through the scraper unit 2 in the radial direction of the scraper unit 2, the block 332 is of a cylindrical structure, one end of the block 332 is fixed on the plate body 331, a diameter of the end of the block 332 extending into the catching groove 21 is equal to a width of the catching groove 21, an axis of the block 332 may be parallel to the length direction of the scraper unit 2, and the length direction of the scraper may be parallel to the first rotation axis. During assembly, the fixture block 332 can be placed into the clamping groove 21 from the radial opening of the scraper unit 2, so that the assembly difficulty of the scraper assembly 10 can be reduced.
As shown in fig. 5 and 6, in an embodiment, a fixing hole 333 is formed on the plate body 331, and the latch 332 is fixed in the fixing hole 333. The specific plate body 331 is further provided with a locking threaded hole 334, the locking threaded hole 334 penetrates through the side wall of the fixing hole 333, the connecting plate 33 further comprises a locking bolt 335, and when the locking bolt 335 is matched with the locking threaded hole 334, the locking bolt can extend into the fixing hole 333 to abut against the fixture block 332, so that the fixture block 332 can be locked in the fixing hole 333.
As shown in fig. 7, in an embodiment, the doctor assembly 10 further includes a limiting member 5, and the limiting member 5 is disposed on the base 1 and is used for adjusting a second position of the doctor unit 2 relative to the base 1. Because the knife edge of the scraper unit 2 moves from the first position to the second position through the rotating direction, the distance between the knife edge and the spray head can be adjusted after the second position of the scraper unit 2 relative to the base 1 is adjusted.
As shown in fig. 7, in an embodiment, a limiting threaded hole 16 is formed on the base 1, and the limiting member 5 includes a bolt, and the bolt is engaged with the limiting threaded hole 16 to realize fixed installation on the base 1. When the blade unit 2 is rotated in the first direction, the blade unit 2 can abut against the bolt, and the blade unit 2 is in the second position. When the blade unit 2 is rotated in the second direction, the blade unit 2 is rotated from the second position to the first position, at which time the blade unit 2 is out of contact with the bolt. Meanwhile, through the matching of the adjusting bolt and the limiting threaded hole 16, the bolt can be close to or far away from the scraper unit 2, so that the maximum rotation angle of the scraper unit 2 in the first direction can be adjusted, and the adjustment of the second position is realized. In addition, the limit threaded hole 16 is a countersunk threaded hole so that a bolt head of the bolt can be hidden in the limit threaded hole 16.
It will be appreciated that the corresponding arrangement described above may be substituted in other ways, for example:
in other embodiments, the driving unit 3 may not be disposed on the base 1, and the driving unit 3 may be disposed on other supporting parts of the processing apparatus when the processing apparatus is assembled. Similarly, the scraper unit 2 may not be disposed on the base 1, and when the processing equipment is assembled, the scraper unit 2 may be rotatably connected to other supporting components of the processing equipment.
In other embodiments, the scraper unit 2 may not be disposed in the scraper groove 11, and the scraper unit 2 may be disposed on the upper surface 12 of the base 1.
In other embodiments, the linear driver 31 in the linear driving unit may also adopt an electromagnet, a linear motor, or the like. In other embodiments, the driving unit 3 may directly use a rotary driving mechanism such as a rotary motor to drive the scraper unit 2 to rotate.
In other embodiments, the linear driver 31 may also drive the scraper unit 2 to rotate by using a gear-rack transmission mechanism or the like which can convert a linear motion into a rotary motion.
In other embodiments, the latch 332 may be disposed on the scraper unit 2, and the latch slot 21 may be disposed on the connecting plate 33.
In other embodiments, the dispensing device may also be other processing devices such as a spraying device. Of course, the spray head may be other target objects that need to be cleaned using a scraper.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A scraper component is used for being matched with a base, wherein a scraper groove is formed in the base, and the scraper component is characterized by comprising a scraper unit and a driving unit;
the scraper unit has a first position and a second position relative to the base, and when the scraper unit is located at the first position, the knife edge of the scraper unit is located in the scraper groove; when the scraper unit is located at the second position, the knife edge of the scraper unit is located outside the scraper groove and is located at a position to be cleaned relative to a target object;
the driving unit is connected with the scraper unit and is used for driving the scraper unit to rotate relative to the base; when the scraper unit is located at the first position, the driving unit can drive the scraper unit to rotate to the second position along a first direction; when the scraper unit is located at the second position, the driving unit can drive the scraper unit to rotate to the first position along a second direction, and the first direction is opposite to the second direction.
2. The doctor assembly as claimed in claim 1, further comprising a stop member disposed on the base for adjusting the second position of the doctor unit relative to the base.
3. The doctor assembly as claimed in claim 2, wherein the base has a threaded bore therein, the threaded bore communicating with the doctor slot;
the limiting piece comprises a bolt, and the bolt is matched with the threaded hole so that the bolt can be close to or far away from the scraper unit; when the scraper unit rotates along the first direction, the scraper unit can abut against the bolt, and when the scraper unit rotates along the second direction, the scraper unit can be separated from the bolt.
4. The doctor assembly as claimed in claim 1, wherein the doctor unit is rotatably mounted in the doctor slot.
5. The doctor assembly as claimed in claim 4, wherein the doctor unit does not protrude beyond the doctor slot in the length direction of the doctor slot.
6. The doctor assembly as claimed in any one of claims 1-5, further comprising a doctor blade seat disposed within the doctor blade channel;
the scraper unit comprises a scraper shaft and a scraper blade; the scraper shaft is rotatably arranged on the scraper seat and is connected with the driving unit; the scraper blade is detachably mounted on the scraper shaft, and the edge of the scraper blade is the edge of the scraper unit.
7. The doctor assembly as claimed in claim 1, wherein the doctor unit is rotatably mounted on the base, the drive unit being a linear drive unit;
the linear driving unit is arranged on the base and can do linear motion relative to the base so as to push the scraper unit to rotate.
8. The doctor assembly as claimed in claim 1, wherein the drive unit includes a linear drive, a guide and a connecting plate;
the linear driver and the guide piece are arranged on the base, the linear driver is connected with the connecting plate, the connecting plate is connected with the scraper unit, the linear driver is used for driving the connecting plate to move linearly so as to push the scraper unit to rotate, and the guide piece is used for guiding the linear movement of the connecting plate;
a clamping block is arranged on the first one of the connecting plate and the scraper unit, a clamping groove is arranged on the second one of the connecting plate and the scraper unit, and the clamping block is arranged in the clamping groove;
when the linear driver drives the connecting plate to do linear motion, the clamping block and the side wall of the clamping groove are abutted to apply force, so that the clamping block and the side wall of the clamping groove can slide and rotate relatively, and the scraper unit is rotated.
9. The doctor assembly as claimed in claim 1, wherein a recessed structure is provided on the base, the doctor slot extending through to communicate with the recessed structure, and the drive unit is mounted in the recessed structure.
10. A processing apparatus, comprising a base and the doctor assembly of any of claims 1-9, the base engaging the doctor assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122963913.1U CN216857147U (en) | 2021-11-26 | 2021-11-26 | Scraper assembly and processing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122963913.1U CN216857147U (en) | 2021-11-26 | 2021-11-26 | Scraper assembly and processing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216857147U true CN216857147U (en) | 2022-07-01 |
Family
ID=82128752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122963913.1U Active CN216857147U (en) | 2021-11-26 | 2021-11-26 | Scraper assembly and processing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216857147U (en) |
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2021
- 2021-11-26 CN CN202122963913.1U patent/CN216857147U/en active Active
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Address after: 518000, Building 101, 1st floor, 2nd floor, 4th floor, 3rd floor, 7th floor, 1st floor, and 4th floor of Building 3, Dahua Laser Intelligent Manufacturing Center, No. 12 Chongqing Road, Heping Community, Fuhai Street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Han's CNC Technology Co.,Ltd. Country or region after: China Address before: 518000 5 / F, 1 / 2 / F, 14 / F, 17 / F, No.3 Factory building, antuoshan hi tech Industrial Park, Xinsha Road, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Han's CNC Technology Co.,Ltd. Country or region before: China |