CN114643473A - Automatic press fitting equipment for hub bearing of electric bicycle - Google Patents
Automatic press fitting equipment for hub bearing of electric bicycle Download PDFInfo
- Publication number
- CN114643473A CN114643473A CN202011493452.XA CN202011493452A CN114643473A CN 114643473 A CN114643473 A CN 114643473A CN 202011493452 A CN202011493452 A CN 202011493452A CN 114643473 A CN114643473 A CN 114643473A
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- China
- Prior art keywords
- main body
- body frame
- bearing
- hopper
- hub
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
- B23P21/004—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control the units passing two or more work-stations whilst being composed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
- B23P19/004—Feeding the articles from hoppers to machines or dispensers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The invention discloses automatic press-fitting equipment for hub bearings of electric bicycles, which comprises a main body frame, wherein a conveying belt is installed at the upper end of the main body frame, two sensors are arranged on one side of the conveying belt, the two sensors are both installed on the main body frame, a rotary table is jointly arranged between the two sensors, a plurality of bearing fixing support columns are installed on the periphery of the upper end of the rotary table, a lining hopper is arranged on the right side of the main body frame, a lining slide way is installed on the left side of the lining hopper, the left end of the lining slide way is correspondingly arranged above the rotary table, a bearing hopper and a rubber ring hopper are arranged on the lower side of the main body frame, and a bearing slide way is installed on the right side of the bearing hopper. The invention can save the trouble of manually placing parts on the tool by an operator, realize the effect of automatic assembly, effectively reduce the labor amount of workers, and increase the assembly efficiency of the hub while ensuring the assembly quality of the hub.
Description
Technical Field
The invention relates to the technical field of electric bicycle hub press-fitting, in particular to automatic press-fitting equipment for a hub bearing of an electric bicycle.
Background
In the production process of the hub of the electric vehicle, after various parts are produced and processed, the parts need to be assembled according to an assembly program, and particularly, in the installation process of the central shaft of the hub, the central shaft can be assembled into the hub by extruding the central shaft by using a large external force.
And traditional equipment process all adopts the hydraulic press, and simple and easy frock is impressed bearing, bush, rubber circle and oil blanket into the position of wheel hub jackshaft, and this kind of traditional equipment process need rely on operating personnel to place the part on the frock by hand, then foot switch starts the hydraulic press and carries out the pressfitting, therefore increases the amount of hand labor, and the manual pressfitting is not only the packaging efficiency low, still can lead to the equipment quality stable inadequately, for this reason, we have proposed an electric bicycle wheel hub bearing automatic pressure equipment and have solved above-mentioned problem.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides automatic press-fitting equipment for a hub bearing of an electric bicycle.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automatic press-fitting device for hub bearings of electric bicycles comprises a main body frame, wherein a conveyor belt is installed at the upper end of the main body frame, two sensors are arranged on one side of the conveyor belt, the two sensors are installed on the main body frame, a turntable is jointly arranged between the two sensors, a plurality of bearing fixing struts are installed on one circle of the upper end of the turntable, a lining hopper is arranged on the right side of the main body frame, a lining slide way is installed on the left side of the lining hopper, the left end of the lining slide way is correspondingly arranged above the turntable, a bearing hopper and a rubber ring hopper are arranged on the lower side of the main body frame, a bearing slide way is installed on the right side of the bearing hopper, the right end of the bearing slide way is correspondingly arranged above the turntable, fifteen pieces to be assembled are arranged on the conveyor belt, a bearing pressing cylinder is correspondingly arranged above the conveyor belt, and an oil seal pressing cylinder is arranged on the left side of the bearing pressing cylinder, the left side of pressing the oil blanket cylinder is equipped with and beats the butter device, it installs the left side at the conveyer belt to beat the butter device, main body frame's upside is equipped with the oil blanket hopper, the oil blanket hopper corresponds the setting with pressing the oil blanket cylinder.
Preferably, the both sides of conveyer belt all are equipped with two first branches, and the bottom of four first branches is all fixed in main body frame's upper end, and the common fixed cover in upper end of four first branches has connect first diaphragm, the upper end middle part of first diaphragm can be dismantled through four screws and be connected with the fixed plate, pressure bearing cylinder fixed mounting is on the fixed plate, the flexible end of pressure bearing cylinder runs through fixed plate and first diaphragm and corresponds the top that sets up at one of them piece of undetermining.
Preferably, two second supporting rods are arranged on two sides of the conveying belt, the bottom ends of the four second supporting rods are fixed to the upper end of the main body frame, a second transverse plate is fixedly sleeved at the top ends of the four second supporting rods, a pressure oil seal cylinder is fixedly installed in the middle of the upper end of the second transverse plate, and the telescopic end of the pressure oil seal cylinder penetrates through the second transverse plate and is correspondingly arranged above one to-be-assembled part.
Preferably, the bottom of bush hopper, bearing hopper and oil blanket hopper all is provided with the support, and the bottom four corners of three support all is fixed with support piece.
Preferably, the upper end of the main body frame is provided with a control display screen, and the control display screen is positioned on the left side of the turntable.
Preferably, a conveyor motor is arranged on the conveyor belt, and the conveyor motor is positioned on the left side of the conveyor belt. Preferably, the four corners of the lower end of the main body frame are respectively fixed with a rotating shaft, the bottom ends of the four rotating shafts are respectively rotatably connected with a fixing piece, and pulleys are respectively rotatably sleeved in the four fixing pieces. Preferably, the outside of pulley all is equipped with the threaded rod, the lower extreme four corners at main body frame is fixed respectively on the top of threaded rod, and the equal screw thread in bottom of four threaded rods has cup jointed the pad spare.
The invention has the beneficial effects that:
1. the automatic assembling device has the advantages that parts can be automatically sent into the rotary table through effective matching of the components such as the bearing pressing cylinder, the oil pressing sealing cylinder, the sensor and the conveyor belt, the parts are pressed into the hub intermediate shaft through the bearing cylinder and the oil pressing sealing cylinder above the rotary table through rotation of the rotary table by three hundred and sixty degrees, so that the automatic assembling effect of the hub of the electric bicycle is realized, the labor intensity of workers is effectively reduced, the assembling efficiency of the hub can be improved, and the assembling quality of the hub is ensured;
2. the main body frame can be more conveniently moved through the pulleys by effectively matching the pulleys, the threaded rods, the cushion pieces and other parts, and after the main body frame is moved to a corresponding position, the cushion pieces are rotated to support the main body frame, so that the stability of the main body frame is ensured, and the stability of the main body frame can be improved while the carrying convenience of the main body frame is improved;
in conclusion, the invention can save the trouble of manually placing parts on the tool by an operator, realize the effect of automatic assembly, effectively reduce the labor amount of workers, and increase the assembly efficiency of the hub while ensuring the assembly quality of the hub.
Drawings
FIG. 1 is a connecting structure diagram of an automatic press-fitting apparatus for hub bearings of an electric bicycle according to the present invention;
FIG. 2 is a schematic structural view of a main frame of an automatic press-fitting apparatus for a hub bearing of an electric bicycle according to the present invention;
FIG. 3 is a schematic structural view of a first cross plate of the automatic press-fitting apparatus for hub bearings of an electric bicycle according to the present invention;
FIG. 4 is a schematic structural view of a second transverse plate of the automatic press-fitting apparatus for hub bearings of an electric bicycle according to the present invention;
FIG. 5 is a structural view of a bracket of an automatic press-fitting apparatus for hub bearings of an electric bicycle according to the present invention;
in the figure: 1 waiting to adorn the piece, 2 conveyer belts, 3 bush hoppers, 4 bush slideways, 5 supports, 6 rubber ring hoppers, 7 main body frames, 8 turntables, 9 bearing fixing supports, 10 bearing hoppers, 11 bearing slideways, 12 control display screens, 13 conveyer belt motors, 14 butter beating devices, 15 oil seal hoppers, 16 oil seal pressing cylinders, 17 bearing pressing cylinders, 18 sensors, 19 threaded rods, 20 cushion pieces, 21 rotating shafts, 22 fixing pieces, 23 pulleys, 24 first supporting rods, 25 first transverse plates, 26 second supporting rods, 27 second transverse plates, 28 supporting pieces, 29 fixing plates and 30 screws.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, an automatic press fitting device for hub bearings of electric bicycles comprises a main body frame 7, wherein the main body frame 7 is used for bearing each part, the parts can be driven to move by the movement of the main body frame 7, rotating shafts 21 are fixed at four corners of the lower end of the main body frame 7, fixing pieces 22 are rotatably connected to the bottom ends of the four rotating shafts 21, pulleys 23 are rotatably sleeved in the four fixing pieces 22, the effect of carrying the main body frame 7 can be realized by the cooperation of the pulleys 23 and the rotating shafts 21, and the main body frame 7 is more convenient to carry and use.
In the invention, threaded rods 19 are arranged on the outer sides of the pulleys 23, the top ends of the threaded rods 19 are respectively fixed at four corners of the lower end of the main body frame 7, and the bottom ends of the four threaded rods 19 are respectively in threaded sleeve connection with the cushion piece 20, so that when the main body frame 7 needs to be stabilized, the cushion piece 20 can be lowered by rotating the cushion piece 20 to support the main body frame 7, thereby realizing the effect of ensuring the stability of the main body frame 7.
In the invention, the upper end of the main body frame 7 is provided with the conveyor belt 2, the conveyor belt 2 is provided with the conveyor belt motor 13, the conveyor belt motor 13 is positioned on the left side of the conveyor belt 2, the conveyor belt motor 13 is connected with a matched part, so that the operation is stable, a program can be set, the automatic operation is realized, the conveyor belt 2 can be driven to operate through the operation of the conveyor belt motor 13, and the effect of conveying the hub by the conveyor belt 2 is realized.
In the invention, two sensors 18 are arranged on one side of the conveyor belt 2, the two sensors 18 are both arranged on the main body framework 7, the turntable 8 is arranged between the two sensors 18, the sensors 18 are connected with matching components, stable operation is facilitated, programs can be set, automatic operation is realized, the sensors 18 can sense the position of the hub on the conveyor belt 2, the cylinder above and the turntable 8 are controlled to operate through the moving position of the hub, and parts can be automatically conveyed to the position of the hub through the turntable 8.
In the invention, a plurality of bearing fixing struts 9 are installed on the upper end of a rotary table 8 in a circle, a control display screen 12 is arranged on the upper end of a main body frame 7, the control display screen 12 is positioned on the left side of the rotary table 8, the control display screen 12 is used for controlling the main controller of the main body frame 7 and peripheral devices thereof, and an automatic operation program can be set through the control display screen 12.
According to the invention, a lining hopper 3 is arranged on the right side of a main body frame 7, a lining slide way 4 is arranged on the left side of the lining hopper 3, the left end of the lining slide way 4 is correspondingly arranged above a rotary disc 8, the lining hopper 3 is used for bearing lining parts, the lining hopper 3 can convey parts to the rotary disc 8 through the lining slide way 4, a bearing hopper 10 and a rubber ring hopper 6 are arranged on the lower side of the main body frame 7, a bearing slide way 11 is arranged on the right side of the bearing hopper 10, the right end of the bearing slide way 11 is correspondingly arranged above the rotary disc 8, the bearing hopper 10 and the rubber ring hopper 6 are used for bearing and conveying parts required by hub assembly, the parts can be automatically added to the rotary disc 8, and the parts are added to the hub through the rotary disc 8 to realize the press-mounting effect.
The invention is characterized in that fifteen pieces to be assembled 1 are arranged on the conveyor belt 2, the pieces to be assembled 1 are hubs for the electric bicycle, the hubs can be conveyed through the conveyor belt 2, the press bearing air cylinders 17 are correspondingly arranged above the conveyor belt 2, the press bearing air cylinders 17 are connected with matched components, stable operation is facilitated, programs can be set, automatic operation is realized, and press-fitting effect is realized on the hubs.
In the invention, two first supporting rods 24 are respectively arranged at two sides of the conveying belt 2, the bottom ends of the four first supporting rods 24 are respectively fixed at the upper end of the main body frame 7, the upper ends of the four first supporting rods 24 are jointly fixedly sleeved with a first transverse plate 25, and the first transverse plate 25 can be arranged above the conveying belt 2 through the first supporting rods 24, so that the hub on the conveying belt 2 can be conveniently processed.
In the invention, the middle part of the upper end of the first transverse plate 25 is detachably connected with the fixing plate 29 through four screws 30, the press bearing cylinder 17 is fixedly arranged on the fixing plate 29, and an operator can conveniently detach the press bearing cylinder 17 through the fixing plate 29, so that the press bearing cylinder 17 is more convenient to replace.
In the invention, the telescopic end of the bearing pressing cylinder 17 penetrates through the fixed plate 29 and the first transverse plate 25 and is correspondingly arranged above one to-be-mounted part 1, a part can be pressed in a hub through the operation of the bearing pressing cylinder 17, so that the pressing effect is realized, the oil sealing pressing cylinder 16 is arranged on the left side of the bearing pressing cylinder 17, and the oil sealing pressing cylinder 16 is connected with a matched part, so that the stable operation is facilitated, the program can be set, and the automatic operation can be realized.
In the invention, two second supporting rods 26 are arranged on two sides of the conveyor belt 2, the bottom ends of the four second supporting rods 26 are fixed at the upper end of the main body frame 7, the top ends of the four second supporting rods 26 are jointly and fixedly sleeved with a second transverse plate 27, the middle part of the upper end of the second transverse plate 27 is fixedly provided with a pressure oil seal cylinder 16, and the pressure oil seal cylinder 16 can be fixed above the conveyor belt 2 through the second supporting rods 26.
In the invention, the telescopic end of the oil seal pressing air cylinder 16 penetrates through the second transverse plate 27 and is correspondingly arranged above one piece to be assembled 1, an oil seal can be pressed in a wheel hub through the operation of the oil seal pressing air cylinder 16, the left side of the oil seal pressing air cylinder 16 is provided with the butter squeezing device 14, the butter squeezing device 14 is arranged on the left side of the conveying belt 2, the butter squeezing device 14 is connected with a matched component, the stable operation is convenient, a program can be set, the automatic operation is realized, and butter can be automatically squeezed into the wheel hub through the butter squeezing device 14.
In the invention, an oil seal hopper 15 is arranged on the upper side of the main body frame 7, the oil seal hopper 15 and an oil seal cylinder 16 are correspondingly arranged, the bottom ends of the lining hopper 3, the bearing hopper 10 and the oil seal hopper 15 are all provided with a bracket 5, four corners of the bottom ends of the three brackets 5 are all fixed with supporting pieces 28, the lining hopper 3, the bearing hopper 10 and the oil seal hopper 15 can be supported by the brackets 5, and the stable operation of the lining hopper, the bearing hopper and the oil seal hopper is ensured.
In the present invention, when used: after an operator places the part to be assembled 1 on the right side of the conveyor belt 2, the conveyor belt 2 drives the conveyor belt 2 to operate through the conveyor belt motor 13, the conveyor belt 2 drives the part to be assembled 1 to move leftwards, meanwhile, the lining hopper 3, the rubber ring hopper 6 and the bearing hopper 10 convey internal parts to the rotary table 8, the sensor 18 senses that the part to be assembled 1 enters the bottom end of the bearing pressing cylinder 17, the rotary table 8 rotates by three hundred sixty degrees, the bearing pressing cylinder 17 presses the parts into the part to be assembled 1, the parts are circulated in sequence, the part to be assembled 1 processed by the bearing pressing cylinder 17 enters the position below the oil pressing and sealing cylinder 16, the part is conveyed to the position below the oil pressing and sealing cylinder 16 by the oil sealing hopper 15, the parts are pressed into the parts to be assembled 1 through the oil pressing seal air cylinder 16, then butter is injected into the parts to be assembled 1 through the butter injecting device 14, and the parts are sequentially circularly assembled, so that the effect of automatically assembling the parts to be assembled 1 can be realized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides an automatic pressure equipment of electric bicycle hub bearing, includes main body frame (7), its characterized in that: the conveyor belt (2) is installed at the upper end of the main body frame (7), two sensors (18) are arranged on one side of the conveyor belt (2), the two sensors (18) are installed on the main body frame (7), a rotary table (8) is jointly arranged between the two sensors (18), a plurality of bearing fixing support columns (9) are installed on one circle of the upper end of the rotary table (8), a lining hopper (3) is arranged on the right side of the main body frame (7), a lining slide way (4) is installed on the left side of the lining hopper (3), the left end of the lining slide way (4) is correspondingly arranged above the rotary table (8), a bearing hopper (10) and a rubber ring hopper (6) are arranged on the lower side of the main body frame (7), a bearing slide way (11) is installed on the right side of the bearing hopper (10), and the right end of the bearing slide way (11) is correspondingly arranged above the rotary table (8), be equipped with fifteen on conveyer belt (2) and undetermined dress spare (1), the top correspondence of conveyer belt (2) is equipped with pressure bearing cylinder (17), the left side of pressure bearing cylinder (17) is equipped with pressure oil blanket cylinder (16), the left side of pressure oil blanket cylinder (16) is equipped with and beats butter device (14), it installs the left side at conveyer belt (2) to beat butter device (14), the upside of main body frame (7) is equipped with oil blanket hopper (15), oil blanket hopper (15) and pressure oil blanket cylinder (16) correspond the setting.
2. The automatic press-fitting equipment for hub bearings of electric bicycles, according to claim 1, is characterized in that: the both sides of conveyer belt (2) all are equipped with two first branch (24), and the bottom of four first branch (24) is all fixed in the upper end of main body frame (7), and the common fixed cover in upper end of four first branch (24) has been connected with first diaphragm (25), the upper end middle part of first diaphragm (25) can be dismantled through four screws (30) and be connected with fixed plate (29), pressure bearing cylinder (17) fixed mounting is on fixed plate (29), the flexible end of pressure bearing cylinder (17) runs through fixed plate (29) and first diaphragm (25) and corresponds the top that sets up in one of them undetermined dress spare (1).
3. The automatic press-fitting equipment for the hub bearing of the electric bicycle according to claim 1, characterized in that: the two sides of the conveying belt (2) are provided with two second supporting rods (26), the bottom ends of the four second supporting rods (26) are fixed at the upper end of the main body frame (7), the top ends of the four second supporting rods (26) are fixedly sleeved with a second transverse plate (27) together, the middle of the upper end of the second transverse plate (27) is fixedly provided with a pressure oil seal cylinder (16), and the telescopic end of the pressure oil seal cylinder (16) penetrates through the second transverse plate (27) and is correspondingly arranged above one of the undetermined parts (1).
4. The automatic press-fitting equipment for hub bearings of electric bicycles, according to claim 1, is characterized in that: the bottom ends of the bushing hoppers (3), the bearing hoppers (10) and the oil seal hoppers (15) are all provided with supports (5), and supporting pieces (28) are fixed at four corners of the bottom ends of the three supports (5).
5. The automatic press-fitting equipment for hub bearings of electric bicycles, according to claim 1, is characterized in that: the upper end of main body frame (7) is provided with control display screen (12), control display screen (12) are located the left side of carousel (8).
6. The automatic press-fitting equipment for hub bearings of electric bicycles, according to claim 1, is characterized in that: the conveying belt (2) is provided with a conveying belt motor (13), and the conveying belt motor (13) is located on the left side of the conveying belt (2).
7. The automatic press-fitting equipment for hub bearings of electric bicycles, according to claim 1, is characterized in that: the lower extreme four corners of main body frame (7) all are fixed with pivot (21), and the bottom of four pivot (21) all rotates and is connected with mounting (22), all rotates in four mounting (22) and has cup jointed pulley (23).
8. The automatic press-fitting equipment for hub bearings of electric bicycles, according to claim 7, wherein: the outside of pulley (23) all is equipped with threaded rod (19), the lower extreme four corners at main body frame (7) is fixed respectively on the top of threaded rod (19), and the equal screw thread in bottom of four threaded rods (19) has cup jointed pad spare (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011493452.XA CN114643473A (en) | 2020-12-17 | 2020-12-17 | Automatic press fitting equipment for hub bearing of electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011493452.XA CN114643473A (en) | 2020-12-17 | 2020-12-17 | Automatic press fitting equipment for hub bearing of electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114643473A true CN114643473A (en) | 2022-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011493452.XA Pending CN114643473A (en) | 2020-12-17 | 2020-12-17 | Automatic press fitting equipment for hub bearing of electric bicycle |
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| Country | Link |
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| CN (1) | CN114643473A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115255890A (en) * | 2022-09-30 | 2022-11-01 | 加力卡塞阀门(江苏)有限公司 | Bushing pressing device for lantern ring |
-
2020
- 2020-12-17 CN CN202011493452.XA patent/CN114643473A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115255890A (en) * | 2022-09-30 | 2022-11-01 | 加力卡塞阀门(江苏)有限公司 | Bushing pressing device for lantern ring |
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