CN112810004A - Automatic shearing device for tyre bead - Google Patents
Automatic shearing device for tyre bead Download PDFInfo
- Publication number
- CN112810004A CN112810004A CN202110210053.6A CN202110210053A CN112810004A CN 112810004 A CN112810004 A CN 112810004A CN 202110210053 A CN202110210053 A CN 202110210053A CN 112810004 A CN112810004 A CN 112810004A
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- tire
- connecting rod
- hair
- spring
- shearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/02—Deburring or deflashing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Tyre Moulding (AREA)
Abstract
The invention discloses an automatic shearing device for tire bristles, and belongs to the technical field of tire production. The technical scheme is as follows: the tire hair shearing mechanism is fixedly arranged on the tire clamping and rotating mechanism through a connecting rack; the tire hair shearing mechanism comprises a tire tread tire hair shearing unit, a first tire side tire hair shearing unit and a second tire side tire hair shearing unit. The device provided by the invention replaces a manual trimming mode, potential safety hazards existing in manual trimming are avoided, the production efficiency is high, the product quality is stable, and the problem of tire scratching is also avoided by adopting a mode of connecting a spring with a cutter.
Description
Technical Field
The invention relates to the technical field of tire production, in particular to an automatic shearing device for tire bristles.
Background
The tire is vulcanized in the mold, and the vent hole is arranged in the mold, so that the vulcanized tire has tire burrs on the tire side part of the tire surface. The tire hair has no benefit on the performance and the quality of the tire, the friction force between the tire and the ground is increased, the driving resistance is increased, the oil consumption is increased, and the tire hair at the tire side can shield the trademark of a product to influence the appearance.
Get rid of the child hair at present and adopt the mode of artifical pruning mostly, the mode of artifical pruning is pruned the child hair for the workman under the high-speed rotation of tire, consequently has very big potential safety hazard, and production efficiency is low, product quality unstability scheduling problem, still has the tire fish tail problem that the artificial factor leads to in addition.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: overcome prior art's not enough, provide a tire child hair automatic cutout device, replaced artifical pruning mode, avoided the potential safety hazard of artifical pruning existence, production efficiency is high, and product quality is stable, adopts the mode of spring coupling cut-off knife to also avoid the problem of tire fish tail.
The technical scheme of the invention is as follows:
the automatic shearing device for the tire bead comprises a tire clamping and rotating mechanism and a bead shearing mechanism, wherein the bead shearing mechanism is fixedly arranged on the tire clamping and rotating mechanism through a connecting rack; the tire hair shearing mechanism comprises a tire tread tire hair shearing unit, a first tire side tire hair shearing unit and a second tire side tire hair shearing unit.
Preferably, the tire clamping and rotating mechanism comprises a plurality of clamping upright columns distributed on the periphery of the tire, the clamping upright columns are driven by a first motor to rotate, and the connecting rack is fixedly mounted on a shell of one of the first motors.
Preferably, the device further comprises a second motor, and a first gear is fixedly mounted on a driving shaft of the second motor; a nut seat is fixedly installed on a shell of each first motor, a lead screw is connected to the inner thread of each nut seat, a second gear is fixedly installed on the lead screw, and the second gear is meshed with the first gear.
Preferably, the second motor is provided with a base, and a driving shaft and a second gear of the second motor are both positioned in the base.
Preferably, the bottom of the clamping column is fixedly provided with a conical cylinder, and the conical cylinder is narrow at the top and wide at the bottom.
Preferably, the connecting frame is arc-shaped and horizontally arranged.
Preferably, the fetal hair shearing mechanism further comprises an installation rack, a V-shaped rack is fixedly installed on the installation rack and comprises an upper connecting rod and a lower connecting rod, one end of the upper connecting rod and one end of the lower connecting rod are respectively fixed on the installation rack, and the other ends of the upper connecting rod and the lower connecting rod are fixedly connected together; the upper connecting rod and the lower connecting rod are respectively provided with a slide rail, slide blocks are connected in the slide rails in a sliding manner, and a spring is fixedly connected between the two slide blocks; the spring is fixedly connected with a rotating connecting rod, the rotating connecting rod is fixedly connected with a vertically arranged rotating shaft, the rotating shaft penetrates through the rotating connecting rod, and two ends of the rotating shaft are respectively and rotatably connected to the mounting rack; the first tire side tire bead shearing unit and the second tire side tire bead shearing unit are respectively installed on the two sliding blocks, and the tire tread tire bead shearing unit is hinged to the rotating connecting rod.
Preferably, the first sidewall and second sidewall tire bead shearing unit respectively comprises a first transition connecting rod, one end of the first transition connecting rod is fixed on the sliding block, the other end of the first transition connecting rod is fixedly provided with a first outer cover, a first spring group is arranged in the first outer cover, the first spring group comprises a plurality of vertically arranged springs which are arranged at intervals in the horizontal direction, and one end of each spring is provided with a cutter; the cutters of the first tire side tire bead shearing unit and the second tire side tire bead shearing unit respectively correspond to the upper tire side part and the lower tire side part of the tire.
Preferably, the tread and tire hair shearing unit comprises a second transition connecting rod, one end of the second transition connecting rod is hinged to the rotating connecting rod, a second outer cover is installed at the other end of the second transition connecting rod, a second spring group is installed in the second outer cover and comprises a plurality of horizontally arranged springs arranged at intervals in the vertical direction, and a cutter is installed at one end of each spring.
Preferably, the clamping studs are provided in four and are arranged uniformly around the periphery of the tyre.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the device, the tire is clamped and simultaneously rotates in situ through the tire clamping and rotating mechanism, and the tire hair is sheared through the tire hair shearing mechanism, so that a manual trimming mode is replaced, the potential safety hazard existing in manual trimming is avoided, the production efficiency is high, the product quality is stable, and the problem of tire scratching is also avoided by adopting a mode of connecting a spring with a cutter.
2. The tire clamping and rotating mechanism disclosed by the invention has the advantages that the second motor is used for driving the first gear and the second gear to rotate, the second gear drives the screw to rotate, and then the clamping upright column is driven to move, so that the positioning and the fixing of the tire are realized. In addition, the connecting rack is fixed on the first motor shell, the cutting position of the fetal hair shearing mechanism can be positioned through the movement of the clamping upright column, and the positioning precision is high.
3. According to the device, the position of the clamping upright post can be adjusted at will according to the specification of the tire, and meanwhile, the position of the cutter of the tire hair shearing mechanism can be adjusted through the spring, so that the tire hair shearing mechanism can shear tire hair of various specifications and has the advantage of wide application range.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view showing a connection relationship between the first gear and the second gear of the present invention.
Fig. 3 is a schematic structural view of the hair shearing mechanism of the present invention.
Fig. 4 is a schematic view of the connection relationship between the second transition link and the rotation link according to the present invention.
Fig. 5 is a schematic structural view of the V-shaped frame of the present invention.
In the figure, 1-clamping upright column, 2-first motor, 3-connecting frame, 4-second motor, 5-driving shaft, 6-first gear, 7-nut seat, 8-lead screw, 9-second gear, 10-machine seat, 11-conical barrel, 12-mounting frame, 131-upper connecting rod, 132-lower connecting rod, 14-slide rail, 15-slide block, 16-spring, 17-rotating connecting rod, 18-rotating shaft, 19-first transition connecting rod, 20-first outer cover, 21-cutting knife, 22-second transition connecting rod and 23-second outer cover.
Detailed Description
Example 1
As shown in fig. 1 to 5, the present embodiment provides an automatic tire bead shearing apparatus, which includes a tire clamping rotation mechanism, a bead shearing mechanism, and a second motor 4; the tire clamping and rotating mechanism comprises four clamping upright columns 1 which are uniformly distributed on the periphery of a tire, the clamping upright columns 1 are driven to rotate by first motors 2, and a connecting rack 3 is fixedly arranged on a shell of one first motor 2; a first gear 6 is fixedly arranged on a driving shaft 5 of the second motor 4; a nut seat 7 is fixedly installed on the shell of each first motor 2, a lead screw 8 is connected to the inner thread of the nut seat 7, a second gear 9 is fixedly installed on the lead screw 8, and the second gear 9 is meshed with the first gear 6.
The tire hair shearing mechanism comprises a tire tread tire hair shearing unit, a first tire side tire hair shearing unit, a second tire side tire hair shearing unit and an installation rack 12, wherein the installation rack 12 is fixedly installed on the shell of one first motor 2 through a horizontally arranged circular arc-shaped connecting rack 3; a V-shaped frame is fixedly arranged on the mounting frame 12 and comprises an upper connecting rod 131 and a lower connecting rod 132, one end of the upper connecting rod 131 and one end of the lower connecting rod 132 are respectively fixed on the mounting frame 12, and the other ends of the upper connecting rod 131 and the lower connecting rod 132 are fixedly connected together; the upper connecting rod 131 and the lower connecting rod 132 are respectively provided with a slide rail 14, the slide rail 14 is connected with a slide block 15 in a sliding way, and a spring 16 is fixedly connected between the two slide blocks 15; a rotating connecting rod 17 is fixedly connected to the spring 16, a vertically arranged rotating shaft 18 is fixedly connected to the rotating connecting rod 17, and the rotating shaft 18 penetrates through the rotating connecting rod 17 and is rotatably connected to the mounting frame 12 at two ends respectively.
The first tire side tire bead shearing unit and the second tire side tire bead shearing unit respectively comprise a first transition connecting rod 19, one end of the first transition connecting rod 19 is fixed on the sliding block 15, a first outer cover 20 is fixedly installed at the other end of the first transition connecting rod, a first spring 16 group is installed in the first outer cover 20, the first spring 16 group comprises five vertically arranged springs 16 which are arranged at intervals in the horizontal direction, and a cutter 21 is installed at one end of each spring 16; the cutters 21 of the first sidewall bead shearing unit and the second sidewall bead shearing unit correspond to the upper sidewall and the lower sidewall of the tire, respectively.
The tread and tire hair shearing unit comprises a second transition connecting rod 22, one end of the second transition connecting rod 22 is hinged to the rotating connecting rod 17, a second outer cover 23 is installed at the other end of the second transition connecting rod, a second spring 16 group is installed in the second outer cover 23, the second spring 16 group comprises six horizontally arranged springs 16 which are arranged at intervals in the vertical direction, and a cutter 21 is installed at one end of each spring 16.
The working principle is as follows:
when the tire transports to four and presss from both sides tight stand 1 middles, start second motor 4, drive first gear 6 on it and rotate, drive second gear 9 rotation with it meshing then for lead screw 8 rotates, and threaded connection's nut seat 7 can move along lead screw 8 on the lead screw 8, thereby drives four and presss from both sides tight stand 1 and removes, closes second motor 4 after pressing from both sides tight stand until with the tire.
When the clamping upright post 1 moves, the connecting frame 3 fixed on the shell of the first motor 2 moves towards the tire together with the clamping upright post, and after the tire is clamped, the cutter 21 of the tire tread and tire hair shearing unit arranged on the mounting frame 12 contacts the tire tread and is stressed to compress the spring 16, and then the second transition connecting rod 22 is pushed to move outwards. The rotation link 17 hinged to the second transition link 22 rotates together with the rotation shaft 18 in the mounting frame 12 under the pushing action of the second transition link 22, so as to pull the spring 16 fixedly connected to the rotation link 17 to generate a pulling force to pull the two sliders 15 fixedly connected to the spring 16 to slide in the slide rails 14 of the upper link 131 and the lower link 132. The sliding block 15 slides to drive the first transition link 19 fixedly connected with the sliding block to move together, so that the two first outer covers 20 are respectively close to the upper sidewall and the lower sidewall of the tire, and finally the cutter 21 is in contact with the upper sidewall and the lower sidewall of the tire. The first motor 2 is started to drive the four clamping upright columns 1 to rotate, then the clamped tire is driven to rotate, and the cutter 21 which is positioned on the outer side of the tire and is in contact with the tire tread and the tire side part can cut the tire bristles of the tire tread and the tire side part.
After the shearing of the tire hair is completed, the second motor 4 rotates reversely to drive the four clamping upright posts 1 to move towards the direction far away from the tire, and the tire falls. The cutter 21 of the tread tire hair shearing unit is not contacted with the tire tread, the spring 16 connected with the cutter is recovered to the original state, the rotating connecting rod 17 hinged with the second transition connecting rod 22 is rotated to the original position, the spring 16 connected with the rotating connecting rod 17 is recovered to the original state, and the sliding block 15 is also slid to the original position, so that the cutters 21 of the first tire side tire hair shearing unit and the second tire side tire hair shearing unit are driven to be recovered to the original positions.
The position of the clamping upright post 1 can be adjusted at will according to the specification of the tire, and meanwhile, the position of the cutter 21 of the tire hair shearing mechanism can be adjusted through the spring 16, so that the tire hair shearing mechanism can shear tire hair of various specifications and has the advantage of wide application range.
Example 2
On the basis of embodiment 1, the second motor 4 is provided with the base 10, and the driving shaft 5 and the second gear 9 of the second motor 4 are both located in the base 10, so that the first gear 6 and the second gear 9 can be protected.
Example 3
On the basis of embodiment 1, the bottom of the clamping column 1 is fixedly provided with a tapered cylinder 11, and the tapered cylinder 11 is narrow at the top and wide at the bottom. When the four clamping columns 1 move towards the tire direction, the conical cylinders 11 at the bottoms of the four clamping columns can clamp the tire and enable the tire to ascend to the positions of the clamping columns 1 along the conical surfaces, and therefore positioning and clamping of the tire are facilitated.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. Tire child hair automatic cutout device, its characterized in that: the tire hair shearing mechanism is fixedly arranged on the tire clamping and rotating mechanism through a connecting rack (3); the tire hair shearing mechanism comprises a tire tread tire hair shearing unit, a first tire side tire hair shearing unit and a second tire side tire hair shearing unit.
2. The automatic shearing device for the tire treads as set forth in claim 1, wherein: the tire clamping and rotating mechanism comprises a plurality of clamping upright columns (1) distributed on the periphery of a tire, the clamping upright columns (1) are driven to rotate by first motors (2), and a connecting rack (3) is fixedly installed on a shell of one of the first motors (2).
3. The automatic tire bead shearing device as claimed in claim 2, wherein: the device also comprises a second motor (4), wherein a first gear (6) is fixedly arranged on a driving shaft (5) of the second motor (4); a nut seat (7) is fixedly installed on a shell of each first motor (2), a lead screw (8) is connected to the inner thread of the nut seat (7), a second gear (9) is fixedly installed on the lead screw (8), and the second gear (9) is meshed with the first gear (6).
4. The automatic tire bead shearing device as claimed in claim 2, wherein: the second motor (4) is provided with a machine base (10), and a driving shaft (5) and a second gear (9) of the second motor (4) are both positioned in the machine base (10).
5. The automatic tire bead shearing device as claimed in claim 2, wherein: the bottom of the clamping upright post (1) is fixedly provided with a conical cylinder (11), and the conical cylinder (11) is narrow at the top and wide at the bottom.
6. The automatic tire bead shearing device as claimed in claim 2, wherein: the connecting frame (3) is arc-shaped and horizontally arranged.
7. The automatic shearing device for the tire treads as set forth in claim 1, wherein: the fetal hair shearing mechanism further comprises an installation rack (12), a V-shaped rack is fixedly installed on the installation rack (12), the V-shaped rack comprises an upper connecting rod (131) and a lower connecting rod (132), one end of the upper connecting rod (131) and one end of the lower connecting rod (132) are respectively fixed on the installation rack (12), and the other ends of the upper connecting rod (131) and the lower connecting rod (132) are fixedly connected together; the upper connecting rod (131) and the lower connecting rod (132) are respectively provided with a sliding rail (14), the sliding rail (14) is connected with a sliding block (15) in a sliding way, and a spring (16) is fixedly connected between the two sliding blocks (15); a rotating connecting rod (17) is fixedly connected to the spring (16), a rotating shaft (18) which is vertically arranged is fixedly connected to the rotating connecting rod (17), the rotating shaft (18) penetrates through the rotating connecting rod (17), and two ends of the rotating shaft are respectively and rotatably connected to the mounting rack (12); the first tire side tire hair shearing unit and the second tire side tire hair shearing unit are respectively installed on the two sliding blocks (15), and the tire tread tire hair shearing unit is hinged to the rotating connecting rod (17).
8. The automatic tire bead shearing device as claimed in claim 7, wherein: the first tire side tire hair shearing unit and the second tire side tire hair shearing unit respectively comprise a first transition connecting rod (19), one end of the first transition connecting rod (19) is fixed on the sliding block (15), the other end of the first transition connecting rod is fixedly provided with a first outer cover (20), a first spring (16) group is arranged in the first outer cover (20), the first spring (16) group comprises a plurality of vertically arranged springs (16) which are arranged at intervals in the horizontal direction, and one end of each spring (16) is provided with a cutting knife (21); the cutters (21) of the first tire side tire bead shearing unit and the second tire side tire bead shearing unit respectively correspond to the upper tire side part and the lower tire side part of the tire.
9. The automatic tire bead shearing device according to claim 7 or 8, wherein: tire tread child hair shearing unit includes second transition connecting rod (22), and the one end of second transition connecting rod (22) articulates on rotation connecting rod (17), and second dustcoat (23) are installed to the other end, install second spring (16) group in second dustcoat (23), and spring (16) that a plurality of level that second spring (16) group set up including vertical direction interval set up, and cut-off knife (21) are installed to the one end of spring (16).
10. The automatic shearing device for the tire treads as set forth in claim 1, wherein: the clamping upright columns (1) are four and are uniformly arranged around the periphery of the tire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110210053.6A CN112810004B (en) | 2021-02-25 | 2021-02-25 | Automatic shearing device for tyre bead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110210053.6A CN112810004B (en) | 2021-02-25 | 2021-02-25 | Automatic shearing device for tyre bead |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112810004A true CN112810004A (en) | 2021-05-18 |
| CN112810004B CN112810004B (en) | 2022-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110210053.6A Active CN112810004B (en) | 2021-02-25 | 2021-02-25 | Automatic shearing device for tyre bead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112810004B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114011848A (en) * | 2021-11-09 | 2022-02-08 | 黄雨晨 | Production and preparation system and preparation process of modified asphalt modifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB690911A (en) * | 1951-12-21 | 1953-04-29 | Harold Victor James | Tire trimming machine |
| CN201856327U (en) * | 2010-10-19 | 2011-06-08 | 江维华 | Vehicle tyre trimming machine |
| CN204935998U (en) * | 2015-08-20 | 2016-01-06 | 青岛顺力液压设备有限公司 | A kind of Full-automatic tire fetal hair clipping device |
| CN205185166U (en) * | 2015-11-04 | 2016-04-27 | 江阴奥驰机械设备有限公司 | Tire shaving machine |
| CN106313386A (en) * | 2016-08-22 | 2017-01-11 | 无锡益联机械有限公司 | Automatic burr trimming machine for tire |
| CN206287394U (en) * | 2016-12-27 | 2017-06-30 | 相岩松 | A kind of junked tire processing unit |
| CN207059026U (en) * | 2017-02-23 | 2018-03-02 | 江阴奥驰机械设备有限公司 | Tire shaving machine sidewall hair shaving device |
| CN109500839A (en) * | 2018-12-31 | 2019-03-22 | 徐小丽 | Anti- shave of automobile tire hurts hair shaving device and its method |
| CN111300684A (en) * | 2020-04-03 | 2020-06-19 | 刘清华 | Automobile waste tire treatment equipment |
| CN111906979A (en) * | 2020-08-06 | 2020-11-10 | 青岛科技大学 | Tire deburring device and method |
| CN212472150U (en) * | 2020-06-03 | 2021-02-05 | 浙江宓欣工贸有限公司 | Burr removing device for injection molded chair back |
| CN212528456U (en) * | 2020-06-23 | 2021-02-12 | 山东永丰轮胎有限公司 | Tire trimming device |
-
2021
- 2021-02-25 CN CN202110210053.6A patent/CN112810004B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB690911A (en) * | 1951-12-21 | 1953-04-29 | Harold Victor James | Tire trimming machine |
| CN201856327U (en) * | 2010-10-19 | 2011-06-08 | 江维华 | Vehicle tyre trimming machine |
| CN204935998U (en) * | 2015-08-20 | 2016-01-06 | 青岛顺力液压设备有限公司 | A kind of Full-automatic tire fetal hair clipping device |
| CN205185166U (en) * | 2015-11-04 | 2016-04-27 | 江阴奥驰机械设备有限公司 | Tire shaving machine |
| CN106313386A (en) * | 2016-08-22 | 2017-01-11 | 无锡益联机械有限公司 | Automatic burr trimming machine for tire |
| CN206287394U (en) * | 2016-12-27 | 2017-06-30 | 相岩松 | A kind of junked tire processing unit |
| CN207059026U (en) * | 2017-02-23 | 2018-03-02 | 江阴奥驰机械设备有限公司 | Tire shaving machine sidewall hair shaving device |
| CN109500839A (en) * | 2018-12-31 | 2019-03-22 | 徐小丽 | Anti- shave of automobile tire hurts hair shaving device and its method |
| CN111300684A (en) * | 2020-04-03 | 2020-06-19 | 刘清华 | Automobile waste tire treatment equipment |
| CN212472150U (en) * | 2020-06-03 | 2021-02-05 | 浙江宓欣工贸有限公司 | Burr removing device for injection molded chair back |
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| CN111906979A (en) * | 2020-08-06 | 2020-11-10 | 青岛科技大学 | Tire deburring device and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114011848A (en) * | 2021-11-09 | 2022-02-08 | 黄雨晨 | Production and preparation system and preparation process of modified asphalt modifier |
| CN114011848B (en) * | 2021-11-09 | 2024-03-15 | 黄雨晨 | Modified asphalt modifier production and preparation system and preparation process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112810004B (en) | 2022-04-01 |
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Effective date of registration: 20221208 Address after: 266000 Maoshan Road 588, Huangdao District, Qingdao City, Shandong Province Patentee after: Sailun Group Co.,Ltd. Patentee after: Shenzhen Sailun Technology Co.,Ltd. Address before: No. 43, Zhengzhou Road, North District, Qingdao, Shandong Patentee before: Sailun Group Co.,Ltd. |
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