CN212823816U - Positioning device - Google Patents
Positioning device Download PDFInfo
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- CN212823816U CN212823816U CN202021406269.7U CN202021406269U CN212823816U CN 212823816 U CN212823816 U CN 212823816U CN 202021406269 U CN202021406269 U CN 202021406269U CN 212823816 U CN212823816 U CN 212823816U
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- front cover
- protecgulum
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Abstract
The utility model relates to a positioning device, which comprises a frame, a supporting table for placing a front cover, a driving part and a positioning part for positioning and/or guiding the front cover, wherein the supporting table is arranged on the frame and forms a revolute pair with the frame; this positioner, compact structure, reasonable in design both can be for when placing the protecgulum, for the protecgulum provides location and direction, the position of adjustment protecgulum that again can be accurate for the through-hole on the protecgulum can with the screw hole one-to-one of wheel pair axle head, from accomplishing the pre-positioning function to the protecgulum, so that follow-up accurate, efficient assembly protecgulum.
Description
Technical Field
The utility model relates to a rail transit equipment technical field, concretely relates to positioner.
Background
In the technical field of rail transit equipment, a wheel pair is a part of a locomotive, which is in contact with a steel rail, and is generally formed by firmly pressing and mounting two wheels on the same axle; the wheel pair is used for keeping the locomotive running and turning on the steel rail, bearing all static and dynamic loads from the locomotive, transmitting the static and dynamic loads to the steel rail and transmitting the loads generated by unsmooth routes to parts of the locomotive; the wheel set is usually installed by matching with an axle box device (called an axle box for short), because the axle box device is a part which is sleeved on a journal and is connected with the wheel set and a bogie or a two-axle vehicle body, the axle box device is mainly used for transferring the weight and load of the vehicle body to the wheel set, lubricating the journal and reducing the running resistance; the existing axle box device generally comprises a front cover (or called end cover and pressure plate), wherein the front cover is generally provided with at least three through holes for passing bolts along the circumferential direction, the axle end of the wheel pair is provided with threaded holes with the same number and position as the through holes, and the front cover is installed and fixed through the matching of the bolts, the through holes and the threaded holes.
In the prior art, the front cover is usually assembled manually, the difficult problems of low assembly efficiency and high labor cost exist, the assembly of the front cover is carried out by utilizing a wheel pair front cover automatic assembly system, the assembly efficiency can be effectively improved, the labor cost is reduced, but in the initial stage of automatic assembly, the process of placing the front cover (and a nameplate which needs to be assembled with the front cover synchronously, a stop sheet for preventing bolts from loosening and the like) on a tool table (or called) is realized, manual operation is usually needed, however, the problem that the front cover, the nameplate and the stop sheet are overlapped and placed behind the tool table in the actual assembly process is found, the front cover, the nameplate and the stop sheet are difficult to be ensured to be in a centering state, so that the subsequent assembly process is influenced, even the problems of incapability of operation and halt occur, and the improvement is needed urgently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to improve the not enough that exists among the prior art, provide a positioner, this positioner both can for when placing the protecgulum, for the protecgulum provides location and direction, the position of adjustment protecgulum that again can be accurate for through-hole on the protecgulum can with the screw hole one-to-one of wheel pair axle head, from accomplishing the prepositioning function to the protecgulum, so that follow-up accuracy, efficient assembly protecgulum.
The utility model adopts the technical proposal that:
the utility model provides a positioning device, includes the frame, is used for placing brace table, the drive division of protecgulum and is used for fixing a position and/or the location portion of direction to the protecgulum, the brace table set up in the frame to constitute the revolute pair with the frame, drive division and location portion are fixed in the frame respectively, and the drive division is used for driving the brace table and rotates in order to adjust the position of protecgulum. In the scheme, the positioning part is arranged to provide positioning and/or guiding for the preassembly of the front cover, so that a worker or a mechanical arm can conveniently and accurately place the front cover and the related nameplate and the stop plate on the support table, and the defects in the prior art are effectively overcome; because the restraint effect of location portion places the apron in the brace table and has definite position to can utilize drive division drive brace table to rotate, calculate the brace table and set up in the position of the protecgulum of brace table with the adjustment, get the through-hole on the protecgulum and can with the screw hole one-to-one of wheel pair axle head, accomplish the prepositioning function to the protecgulum, so that follow-up accurate, efficient assembly protecgulum.
Preferably, the positioning part comprises a plurality of vertically arranged positioning columns, and each positioning column corresponds to the through hole in the front cover respectively. So that when using, the reference column can be located to parts such as protecgulum to reach the purpose of confirming the protecgulum initial position, at this moment, each reference column both had played the effect of direction, had played the effect of the restraint location to each protecgulum again, so that at the pivoted in-process of brace table, the protecgulum can not rotate for the brace table.
In order to facilitate the assembly of the bolt on the front cover, the front cover further comprises a lifting mechanism, the support table is provided with a plurality of positioning holes, each positioning hole corresponds to a through hole on the front cover, the positioning columns are arranged in the positioning holes respectively, the lower ends of the positioning columns are fixed to the lifting mechanism respectively, and the lifting mechanism is used for driving each positioning column to ascend and extend out of the positioning hole and driving each positioning column to descend into the positioning hole. In the process of placing the front cover, the nameplate, the stop piece and the like on the support table, the lifting mechanism can drive the positioning columns to ascend to the outside of the through holes so as to conveniently and manually sleeve the front cover, the nameplate, the stop piece and the like on the positioning columns, so that the positioning columns can automatically fall down, the guiding function can be realized, the current position of the front cover can be effectively determined, the position of the front cover on the support table can be accurately adjusted according to the position of the wheel pair, and the purpose of pre-positioning is achieved; and when assembling the bolt in the through-hole of preceding protecgulum, each reference column can descend in the through-hole under elevating system's drive, at this moment, the through-hole of locating hole, protecgulum and the hole on data plate and the locking plate are in centering state respectively to make the bolt can be smooth, accurate insert corresponding locating hole from the top in, thereby the assembly of high-efficient completion protecgulum, data plate and locking plate, positioning work, then the manipulator removes the protecgulum, data plate, locking plate and bolt whole from the brace table can.
For the lifting function of the rotation of realizing the brace table and the reference column for the two can mutually support, it is preferred that, elevating system includes power portion, connecting portion and base, power portion is fixed in the frame, the lower extreme of reference column is fixed in respectively the base, just base and connecting portion constitute the revolute pair. Under the drive of the power part, power along the vertical direction is transmitted through the connecting part and the base, so that the positioning columns can be driven to synchronously ascend relative to the supporting table and extend out of the upper end of the supporting table so as to assemble the front cover; when the driving motor drives the supporting platform to rotate, the base and the connecting part form a revolute pair, so that the movement separation can be realized, the base can rotate relative to the connecting part under the action of the supporting platform, and the position of the front cover can be effectively adjusted.
In order to enable the base and the connecting part to form a revolute pair, preferably, the base is of a circular structure or a circular ring structure, the connecting part comprises at least two vertically arranged supporting pieces, clamping grooves are respectively formed in the side surfaces of the supporting pieces, the edge of the base is arranged in the clamping grooves, and the base can rotate relative to the clamping grooves;
or, two rolling parts are arranged on the side surface of the supporting part, the edge of the base is arranged between the two rolling parts, and the rolling parts can be bearings or rollers. Thereby realizing rolling friction and being beneficial to reducing the friction resistance.
Preferably, the support member is a rod-like or plate-like structure.
Preferably, the power part is an electric push rod, an air cylinder or a hydraulic cylinder.
In order to be matched with the circular groove on the front cover conveniently, a cylindrical boss is further arranged on the upper portion of the supporting platform and is used for being inserted into the circular groove of the front cover. For better support of the front cover.
Preferably, the driving part comprises a driving motor, the supporting table is arranged on the frame through a bearing, a transmission shaft is arranged at the lower end of the supporting table, the driving motor is connected with the transmission shaft through a coupler or connected with the transmission shaft through a transmission mechanism, and the transmission mechanism is a gear transmission mechanism, a belt transmission mechanism, a synchronous belt transmission mechanism or a worm and gear transmission mechanism. The driving motor can be a stepping motor or a servo motor so as to accurately adjust the rotation angle; and through setting up drive mechanism, can be nimble arrange driving motor.
In order to meet the requirements of the front covers and the wheel sets of different models, the wheel set support device preferably comprises at least two support tables, and each support table is used for placing the front covers of the same model or/and different models. The positioning system is used for positioning the front covers of different models, so that the front covers can be assembled for wheel sets of different models.
Compared with the prior art, the positioning device provided by the utility model has compact structure, can adjust the position of the front cover, realizes the pre-positioning function of the front cover, so that the wheel set front cover automatic assembly system can smoothly complete the assembly work of the front cover; but also can provide direction and restraint for parts such as protecgulum, data plate and stop plate to staff or manipulator accuracy place parts such as protecgulum, data plate and stop plate on the brace table, thereby effectively solve the not enough of prior art existence.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a front cover.
Fig. 2 is a schematic structural view of the front cover with a nameplate and a stop piece.
Fig. 3 is a schematic structural diagram of a positioning device provided in embodiment 1 of the present invention.
Fig. 4 is a front view of fig. 3.
Fig. 5 is a second schematic structural diagram of a positioning device according to embodiment 1 of the present invention.
Description of the drawings
A frame 200, a bearing 201, a bearing seat 202,
A support table 301, a positioning hole 302, a transmission shaft 303, a driving motor 304, a first belt wheel 305, a second belt wheel 306, a cylindrical boss 307,
Thin guide rod cylinder 401, support 402, rolling part 403, base 404 and positioning column 405.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1 to 5, the present embodiment provides a positioning device, which includes a frame 200, a supporting platform 301 for placing a front cover 100, a driving portion, and a positioning portion for positioning and/or guiding the front cover 100, wherein the supporting platform 301 is disposed on the frame 200 and forms a rotation pair with the frame 200, the driving portion and the positioning portion are respectively fixed on the frame 200, and the driving portion is used for driving the supporting platform 301 to rotate to adjust the orientation of the front cover 100. In the embodiment, the positioning part is arranged to provide positioning and/or guiding for the pre-assembly of the front cover 100, so that a worker or a manipulator can conveniently and accurately place the front cover 100, the related nameplate 103 and the stop piece 104 on the support table 301, and the defects in the prior art are effectively overcome; due to the constraint effect of the positioning part, the cover plate placed on the supporting table 301 has a determined position, so that the driving part can be used for driving the supporting table 301 to rotate, the positions of the supporting table 301 and the front cover 100 arranged on the supporting table 301 are adjusted and calculated, the through holes 101 in the front cover 100 can be in one-to-one correspondence with the threaded holes at the shaft ends of the wheel pair, the pre-positioning function of the front cover 100 is completed, and the front cover 100 can be assembled accurately and efficiently in the following process.
In the prior art, the number of the through holes 101 on the front cover 100 is usually greater than or equal to 3, and the through holes 101 are respectively and uniformly distributed along the circumferential direction of the front cover 100, as an example, as shown in fig. 1 and fig. 2, three through holes 101 uniformly distributed along the circumferential direction are provided on the front cover 100 to be assembled, and correspondingly, three threaded holes corresponding to the three through holes 101 are also provided at the shaft end of the wheel pair for facilitating the assembly.
The rack 200 may have various embodiments, and as shown in fig. 3 to 5, for example, the rack 200 includes an upper structure and a lower structure, the support stage 301 is disposed on the upper structure, and the driving part is disposed on the lower structure.
As a preferred embodiment, the positioning portion includes a plurality of positioning pillars 405 vertically disposed, and each positioning pillar 405 corresponds to a through hole 101 on the front cover 100. When the positioning device is used, the positioning posts 405 can be sleeved with the front cover 100, the nameplate 103, the stop piece 104 and other components, so as to achieve the purpose of determining the initial position of the front cover 100, at this time, each positioning post 405 not only plays a role of guiding, but also plays a role of restraining and positioning each front cover 100, so that the front cover 100 cannot rotate relative to the supporting table 301 in the rotating process of the supporting table 301.
In order to facilitate the assembling of the bolts 105 on the front cover 100, in a further embodiment, the supporting platform 301 is provided with a plurality of positioning holes 302 as shown in the figure, each positioning hole 302 corresponds to a through hole 101 on the front cover 100, the positioning pillars 405 are respectively disposed in the positioning holes 302, and the lower ends of the positioning pillars 405 are respectively fixed to the lifting mechanism, the lifting mechanism is configured to drive each positioning pillar 405 to ascend and extend out of the positioning hole 302, and is configured to drive each positioning pillar 405 to descend into the positioning hole 302. In the process of placing the front cover 100, the nameplate 103, the stop piece 104 and the like on the support platform 301, the lifting mechanism can drive the positioning columns 405 to ascend to the outside of the through holes 101, so that the front cover 100, the nameplate 103, the stop piece 104 and the like can be conveniently and manually sleeved on the positioning columns 405, and the positioning columns 405 can automatically fall down, so that the guiding function can be realized, the current position of the front cover 100 can be effectively determined, the position of the front cover 100 on the support platform 301 can be accurately adjusted according to the position of the wheel pair, and the purpose of pre-positioning is achieved; when the bolts 105 are assembled in the through holes 101 of the front cover 100, the positioning posts 405 can be driven by the lifting mechanism to descend into the through holes 101, at this time, the positioning holes 302, the through holes 101 of the front cover 100, the data plate 103 and the stop piece 104 are respectively in a centering state, so that the bolts 105 can be smoothly and accurately inserted into the corresponding positioning holes 302 from above, the assembling and positioning work of the front cover 100, the data plate 103 and the stop piece 104 is efficiently completed, the front cover 100 assembly body shown in fig. 2 is obtained, and then the front cover 100, the data plate 103, the stop piece 104 and the bolts 105 are integrally moved away from the support platform 301 by the manipulator.
In order to realize the rotation of the supporting platform 301 and the lifting function of the positioning column 405, so that the two can be matched with each other, preferably, the lifting mechanism comprises a power part, a connecting part and a base 404, the power part is fixed on the frame 200, the lower ends of the positioning column 405 are respectively fixed on the base 404, and the base 404 and the connecting part form a revolute pair. Under the driving of the power part, the power along the vertical direction is transmitted through the connecting part and the base 404, so that each positioning column 405 can be driven to synchronously ascend relative to the supporting platform 301 and extend out of the upper end of the supporting platform 301, and the assembly of the front cover 100 is realized; when the driving motor 304 drives the supporting platform 301 to rotate, the base 404 and the connecting portion form a revolute pair, so that the base 404 can be separated from the connecting portion, and the base 404 can rotate relative to the connecting portion under the action of the supporting platform 301, thereby effectively adjusting the orientation of the front cover 100.
Preferably, the power unit may be an electric push rod, an air cylinder, a hydraulic cylinder, or the like, and as shown in fig. 4 and 5, for example, in the present embodiment, the power unit is a thin guide rod air cylinder 401, and the thin guide rod air cylinder 401 includes a cylinder body, a push block, and a push rod connecting the cylinder body and the push block, as shown in fig. 4.
As shown in fig. 3, 4 and 5, in the present embodiment, the base 404 is a circular ring structure, and the connecting portion includes at least two vertically disposed supporting members 402, and the supporting members 402 are rod-shaped or plate-shaped structures; in one scheme, the side surfaces of the support 402 are respectively provided with a clamping groove, the edge of the base 404 is arranged in the clamping groove, and the base 404 can rotate relative to the clamping groove, so that the base 404 can be supported, and the orientation of the base 404 can be adjusted; in order to reduce the friction resistance, in another scheme, two rolling components 403 are disposed on the side surface of the support 402, the edge of the base 404 is disposed between the two rolling components 403, and the rolling components 403 may be a bearing 201, a roller, and the like, as shown in fig. 4 and 5, so as to implement rolling friction, which is beneficial to reducing the friction resistance.
In order to facilitate the adaptation to the circular recess 102 of the front cover 100, in a further aspect, the upper portion of the support platform 301 is provided with a cylindrical boss 307, as shown in fig. 3, the cylindrical boss 307 being adapted to be inserted into the circular recess 102 of the front cover 100. To better support the front cover 100.
In one solution provided in this embodiment, the driving portion includes a driving motor 304, and the driving motor 304 may adopt a stepping motor or a servo motor, etc. so as to achieve precise control; the support platform 301 is arranged on the frame 200 through the bearing 201 and the bearing seat 202 so as to realize separation of movement, the lower end of the support platform 301 is provided with a transmission shaft 303, the driving motor 304 can be directly connected with the transmission shaft 303 through a coupler so as to realize transmission of power, and can also be connected with the transmission shaft 303 through a transmission mechanism so as to drive the support platform 301 to rotate and achieve the purpose of adjusting the position of the front cover 100; preferably, the transmission mechanism may be a gear transmission mechanism, a belt transmission mechanism, a synchronous belt transmission mechanism or a worm gear transmission mechanism. By providing the transmission mechanism, the driving motor 304 can be flexibly arranged; for example, the output shaft of the driving motor 304 may be provided with a first gear, the transmission shaft 303 is provided with a second gear, and the first gear and the second gear are engaged with each other to realize gear transmission, as another example, as shown in fig. 3 and 5, the output shaft of the driving motor 304 is provided with a first pulley 305, the transmission shaft 303 is provided with a second pulley 306, and the first pulley 305 and the second pulley 306 are connected by a synchronous belt so as to form a synchronous belt transmission mechanism, so that the front cover 100 can be effectively driven to rotate, and the purpose of adjusting the orientation of the front cover 100 can be achieved.
It is understood that in this embodiment, after the front cover 100 is positioned, the robot in the wheel-set front cover 100 automatic assembly system can integrally grab the front cover 100, the nameplate 103, the stop plate 104, the bolt 105, and the like arranged on the front cover 100 from the support platform 301, so as to complete the subsequent assembly work smoothly and efficiently.
Example 2
In order to meet the requirements of different models of front covers 100 and wheel pairs, the positioning system provided in this embodiment includes at least two support platforms 301 described in embodiment 1, and each support platform 301 is used for placing the front covers 100 of the same model or/and different models. So that the positioning of different models of front covers 100 can be realized by using the positioning system, and the front covers 100 can be assembled for different models of wheel pairs.
The number of the supporting platforms 301 may be determined according to actual requirements, and as an example, two supporting platforms 301 are included, as shown in fig. 3 to 5, and the supporting platforms 301 have the same structure and the same size, so as to be suitable for positioning the front covers 100 of the same model or size; as another example, two support tables 301 are included, and the structures of the support tables 301 are the same, but in the two support tables 301, the distance from each positioning hole 302 to the center (i.e., the center) of the support table 301 is different, so as to be suitable for two types of front covers 100, and the description thereof is omitted here.
Example 3
This embodiment 3 provides a positioning system, which includes a controller and the positioning apparatus in embodiment 1 or embodiment 2, where the controller may be a single chip microcomputer, an ARM chip, an STM chip, or a PLC, the driving motor 304 and the power unit are respectively connected to the controller, and the controller is configured to control the start/stop of the driving motor 304 and the power unit according to actual needs, for example, the controller may be connected to an upper computer, and the start/stop of the driving motor 304 and the power unit is controlled by receiving a control signal from the upper computer; for another example, the controller may be connected to a vision sensor (e.g., a camera), the vision sensor is configured to acquire an image of the axle end of the wheel pair and transmit the image to the controller, and the controller controls the driving portion to rotate according to the image (for image recognition and processing), so that the front cover 100 placed on the support table 301 may rotate to a position corresponding to the position of the threaded hole at the axle end of the wheel pair, thereby achieving the purpose of positioning the front cover 100, which is not illustrated here.
It can be understood that, in this embodiment, the vision sensor may calculate the position of each threaded hole in the picture of the axle end of the wheel set by using the existing image recognition and processing technology, for example, the positions of the threaded holes are first recognized, the position of the base circle where the center of each threaded hole is located is calculated, a direction may be determined by a connection line between the center of any threaded hole and the center of the base circle, the position of a certain threaded hole at the axle end of the wheel set can be determined by comparing the direction with the set direction, and then the controller is only required to control the driving motor 304 to rotate, so that the positioning function of the front cover 100 can be realized by rotating a certain through hole 101 on the front cover 100 to the position.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides a positioning device, its characterized in that includes the frame, is used for placing the brace table of protecgulum, drive division and is used for fixing a position and/or the location portion of direction to the protecgulum, the brace table set up in the frame to constitute the revolute pair with the frame, drive division and location portion are fixed in the frame respectively, and the drive division is used for driving the brace table to rotate in order to adjust the position of protecgulum.
2. The positioning device according to claim 1, wherein the positioning portion comprises a plurality of positioning posts vertically disposed, and each positioning post corresponds to a through hole on the front cover.
3. The positioning device as claimed in claim 2, further comprising a lifting mechanism, wherein the supporting platform is provided with a plurality of positioning holes, each positioning hole corresponds to a through hole on the front cover, the positioning pillars are respectively arranged in the positioning holes, the lower ends of the positioning pillars are respectively fixed to the lifting mechanism, and the lifting mechanism is used for driving each positioning pillar to ascend and extend out of the positioning hole and for driving each positioning pillar to descend into the positioning hole.
4. The positioning device as claimed in claim 3, wherein the lifting mechanism comprises a power part, a connecting part and a base, the power part is fixed on the frame, the lower ends of the positioning posts are respectively fixed on the base, and the base and the connecting part form a revolute pair.
5. The positioning device according to claim 4, wherein the base is of a circular structure or a circular ring structure, the connecting portion comprises at least two vertically arranged supporting members, clamping grooves are respectively arranged on the side surfaces of the supporting members, the edge of the base is arranged in the clamping grooves, and the base can rotate relative to the clamping grooves;
or the side surface of the supporting piece is provided with two rolling parts, the edge of the base is arranged between the two rolling parts, and the rolling parts are bearings or rollers.
6. A positioning device as set forth in claim 5 wherein said support member is a rod or plate-like structure.
7. The positioning device of claim 5, wherein the power section is an electric push rod, an air cylinder, or a hydraulic cylinder.
8. A positioning device according to any of claims 1-7, characterized in that the upper part of the support table is provided with a cylindrical boss for insertion into a circular recess of the front cover.
9. The positioning device according to any one of claims 1-7, wherein the driving part comprises a driving motor, the support platform is disposed on the frame through a bearing, a transmission shaft is disposed at a lower end of the support platform, and the driving motor is connected to the transmission shaft through a coupling or a transmission mechanism, and the transmission mechanism is a gear transmission mechanism, a belt transmission mechanism, a synchronous belt transmission mechanism or a worm and gear transmission mechanism.
10. The positioning device according to claim 9, comprising at least two support tables, each for placing a front cover of the same model or/and a different model.
Priority Applications (1)
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CN202021406269.7U CN212823816U (en) | 2020-07-16 | 2020-07-16 | Positioning device |
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CN202021406269.7U CN212823816U (en) | 2020-07-16 | 2020-07-16 | Positioning device |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114700723A (en) * | 2022-05-16 | 2022-07-05 | 深圳华数机器人有限公司 | Device for automatically assembling multiple studs on steel sheet at one time |
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2020
- 2020-07-16 CN CN202021406269.7U patent/CN212823816U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114700723A (en) * | 2022-05-16 | 2022-07-05 | 深圳华数机器人有限公司 | Device for automatically assembling multiple studs on steel sheet at one time |
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Address after: Building 66, NO.666, jinfenghuang Avenue, Jinniu high tech Industrial Park, Chengdu, Sichuan 610000 Patentee after: Sichuan guoruan Technology Group Co.,Ltd. Address before: Building 66, NO.666, jinfenghuang Avenue, Jinniu high tech Industrial Park, Chengdu, Sichuan 610000 Patentee before: SICHUAN GUORUAN SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. |