CN115255839A - Double-circulation flexible automatic production line for automobile bumpers - Google Patents
Double-circulation flexible automatic production line for automobile bumpers Download PDFInfo
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- CN115255839A CN115255839A CN202211019081.0A CN202211019081A CN115255839A CN 115255839 A CN115255839 A CN 115255839A CN 202211019081 A CN202211019081 A CN 202211019081A CN 115255839 A CN115255839 A CN 115255839A
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- production line
- guide rail
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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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/088—Work-clamping means other than mechanically-actuated using vacuum means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G35/00—Mechanical conveyors not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
The invention relates to a double-circulation flexible automatic production line for automobile bumpers, which comprises a production line body which is arranged at two positions in a central symmetry arrangement mode, wherein the production line body comprises a circulation station, a workpiece placing position, a heating position, a special-shaped pressing position, a milling position, a flexible welding position and a workpiece taking position are sequentially arranged in the circulation station from front to back, a tire membrane is arranged on the upper side of the circulation station, and a radar material frame area is arranged on one side of the workpiece placing position; according to the automobile bumper double-circulation flexible automatic production line, the suckers and the pressing tools are arranged in the tire membranes, the bumpers can be fixed in a bidirectional fixing mode, the slide rails are arranged on the upper sides of the flow rotary tables, and when the flow rotary tables flow to each station, the bumpers can be respectively positioned above the supporting structures of the corresponding stations by means of stretching of the movable air cylinders, so that interference between the tire membranes and processing equipment in the processing process of the bumpers is reduced, and the matching degree of the tire membrane structure and the whole production line is improved.
Description
Technical Field
The invention relates to the technical field of automobile bumper processing, in particular to a double-circulation flexible automatic production line for an automobile bumper.
Background
Along with the development of industry and the progress of science and technology, the radar hole opening and radar installation and welding operation of an automobile bumper are automatically processed by a flexible production line, so that the labor intensity of workers is reduced, the production efficiency and the design efficiency are improved, and the appearance quality of a product is improved.
The invention patent with the prior publication number of CN113183503A discloses an automatic flexible production line for special-shaped pressing, hole milling and welding of an automobile bumper, which comprises a conveying line which is moved among a plurality of stations, wherein a fetal membrane bottom plate is arranged at the top of the conveying line, the bottom of the fetal membrane bottom plate is matched with the conveying line through a rail, and a plurality of fetal membrane bottom plates are arranged on the conveying line; the top parts of the left side and the right side of the conveying line are respectively provided with a transfer machine, the transfer machines are used for carrying a tire membrane bottom plate, a tire membrane and a bumper to transfer the left line and the right line of the conveying line together, and the front side and the rear side of the conveying line are provided with a workpiece placing station and a workpiece taking station; a special-shaped pressing station, a hole milling station and a flexible welding station are sequentially arranged between the workpiece placing station and the workpiece taking station; the bumper can accomplish the processing on an assembly line, and is high-efficient swift, fetal membrane on the assembly line in addition, radar support, and the processing equipment of each machining-position station can change, thereby the bumper that is applicable to different specification models is processed, and then realize flexible production, however, the structure of fetal membrane and circulation station that this automation line used is all comparatively simple, its function is only simple fixes spacing and transports the removal to car bumper, relatively poor with whole automation line's degree of adaptability, whole production line machining efficiency's promotion space has been restricted.
Therefore, a double-circulation flexible automatic production line for the automobile bumper, which has high matching degree between the tire membrane and the circulation station and the whole production line, is urgently needed.
Disclosure of Invention
The invention aims to overcome the defects and provide the automobile bumper double-circulation flexible automatic production line with high matching degree of the tire membranes, the circulation station and the whole production line.
The purpose of the invention is realized as follows:
flexible automation line of car bumper dual cycle, including being the production line body that central symmetry arrangement mode was provided with two places, the production line body is including the circulation station, the inside of circulation station has set gradually from the front to the back and has put a position, heating position, abnormal shape and press the position, mill position, flexible welding position and get a position, the fetal membrane is installed to the upside of circulation station, put one side of a position and install radar material frame district, one of them department one side in radar material frame district installs the maintenance station, the die storehouse is installed to one side of production line body.
Preferably, the workpiece placing position, the heating position, the special-shaped pressing position, the milling position, the flexible welding position and the workpiece taking position are arranged in a C-shaped arrangement mode.
Preferably, a maintenance position is arranged between the piece placing position and the piece taking position.
Preferably, the circulation station includes the support frame, the internally mounted of support frame has the stop collar, first guide rail and second guide rail are installed respectively to the top of support frame, first guide rail with the downside of second guide rail install with stop collar sliding connection's gag lever post, the support frame respectively with first guide rail with be provided with many places derailment cylinder between the second guide rail, first guide rail with the upside of second guide rail is provided with the circulation revolving stage, the downside of circulation revolving stage be provided with respectively with first guide rail roll connection's first gyro wheel with desire second guide rail roll connection's second gyro wheel, the link is installed in the outside of circulation revolving stage.
Preferably, a driving rail is installed on one side of the supporting frame, and a driving mechanism connected with the connecting frame in a clamping mode is installed on the upper side of the driving rail.
Preferably, the fetal membrane is including installing the slide rail of circulation platform upside, the upside sliding connection of slide rail has the slide, the slide with install the shift cylinder between the circulation revolving stage, the top of slide is provided with gliding mount, the slide with install solid fixed cylinder between the mount, the tamp is installed to the upside of mount, the upside of mount is provided with the sucking disc, the upside of circulation revolving stage is pressed by preceding abnormal shape that has set gradually after to and is supported, mill support and welding support.
Preferably, the pressing tool, the special-shaped pressing support, the milling support and the welding support are arranged at a plurality of positions in a left-right symmetrical arrangement mode.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the automobile bumper double-circulation flexible automatic production line, the suckers and the pressing tools are arranged in the tire membranes, the bumpers can be fixed in a bidirectional fixing mode, the slide rails are arranged on the upper sides of the flow rotary tables, and when the flow rotary tables flow to each station, the bumpers can be respectively positioned above the supporting structures of the corresponding stations by means of the stretching of the movable air cylinders, so that the interference of the tire membranes and processing equipment in the processing process of the bumpers is reduced, and the matching degree of the tire membrane structure and the whole production line is improved;
2. according to the double-circulation flexible automatic production line for the automobile bumper, the limiting sleeve and the limiting rod which are used for being connected in a vertical sliding mode and the rail changing cylinder which is used for driving the rail changing cylinder up and down are respectively arranged between the supporting frame and the first guide rail and between the supporting frame and the second guide rail, when the heights of the first guide rail and the second guide rail are adjusted, the circulation table can be rapidly moved along a specified guide rail route by utilizing the matching of the limiting sleeve and the limiting rod with the first roller and the second roller, a production line with a bent or multi-path is converted into each detachable linear production line, so that the circulation station is more adaptive to the production line, and the circulation efficiency of the station is greatly improved.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the double-cycle flexible automatic production line for the automobile bumper.
Fig. 2 is a schematic top view of the production line body of the dual-cycle flexible automatic production line for the automobile bumper according to the present invention.
Fig. 3 is a schematic structural diagram of a circulation station in the automobile bumper double-circulation flexible automatic production line.
Fig. 4 is a schematic bottom structure view of a flow turntable in the automobile bumper double-circulation flexible automatic production line.
Fig. 5 is a schematic structural view of a driving rail in the dual-cycle flexible automatic production line of the automobile bumper according to the present invention.
FIG. 6 is a schematic structural diagram of a tire membrane in the automatic dual-cycle flexible production line of the bumper of the present invention.
FIG. 7 is a schematic structural view of a deformed pressure support in the dual-cycle flexible automatic production line of the automobile bumper according to the present invention.
FIG. 8 is a schematic structural diagram of a milling support in the dual-cycle flexible automatic production line of the automobile bumper according to the present invention.
FIG. 9 is a schematic structural diagram of a welding support in the dual-cycle flexible automatic production line of the automobile bumper according to the present invention.
FIG. 10 is a schematic structural view of a deformed pressing position in the double-circulation flexible automatic production line for the automobile bumper according to the present invention.
Fig. 11 is a schematic structural diagram of a milling position in the automobile bumper double-cycle flexible automatic production line according to the present invention.
FIG. 12 is a schematic structural diagram of a flexible welding position in a dual-cycle flexible automatic production line for an automobile bumper according to the present invention.
Fig. 13 is a schematic structural view of a radar material frame area in the automobile bumper double-cycle flexible automatic production line according to the present invention.
FIG. 14 is a schematic structural diagram of a maintenance station in a dual-cycle flexible automatic production line for an automobile bumper according to the present invention.
Wherein: the production line comprises a production line body 1, a circulation station 2, a support frame 2.1, a limiting sleeve 2.2, a first guide rail 2.3, a second guide rail 2.4, a limiting rod 2.5, a rail transfer cylinder 2.6, a circulation table 2.7, a first roller 2.8, a second roller 2.9, a connecting frame 2.10, a driving rail 2.11, a driving mechanism 2.12, a workpiece placing position 3, a heating position 4, a special-shaped pressing position 5, a milling position 6, a flexible welding position 7, a workpiece taking position 8, a tire membrane 9, a sliding rail 9.1, a sliding seat 9.2, a moving cylinder 9.3, a fixing frame 9.4, a fixing cylinder 9.5, a pressing tool 9.6, a sucking disc 9.7, a special-shaped pressing support 9.8, a milling support 9.9, a welding support 9.10, a radar material frame area 10, a maintenance station 11, a mold warehouse 12 and a maintenance position 13.
Detailed Description
Referring to fig. 1 to 14, the double-circulation flexible automatic production line for the automobile bumper comprises a production line body 1 which is arranged at two positions in a central symmetry arrangement mode, wherein the production line body 1 comprises a circulation station 2, a piece placing position 3, a heating position 4, a special-shaped pressing position 5, a milling position 6, a flexible welding position 7 and a piece taking position 8 are sequentially arranged in the circulation station 2 from front to back, the piece placing position 3, the heating position 4, the special-shaped pressing position 5, the milling position 6, the flexible welding position 7 and the piece taking position 8 are arranged in a C-shaped arrangement mode, a tire mold 9 is installed on the upper side of the circulation station 2, a radar material frame area 10 is installed on one side of the piece placing position 3, a maintenance station 11 is installed on one side of the radar material frame area 10, a mold base 12 is installed on one side of the production line body 1, and a maintenance position 13 is arranged between the piece placing position 3 and the piece taking position 8; as shown in fig. 2, the production line body 1 is composed of a piece placing position 3, a heating position 4, a special-shaped pressing position 5, a milling position 6, a flexible welding position 7 and a piece taking position 8 which are arranged in a C shape, an overhaul position 13 is arranged between the piece placing position 3 and the piece taking position 8 to form a closed loop, a bumper firstly enters the heating position 4 from the piece placing area 3 to be heated, then moves to the special-shaped pressing position 5 to be pressed, then respectively enters the milling position 6 and the flexible welding position 7 to be respectively milled and welded, and finally moves to the piece taking position 8 to wait for taking out, so that a series of processing operations are completed; simultaneously, be provided with two places through the mode that is central symmetry arrangement with production line body 1, make the device form dual cycle's production line structure to optimize the machining efficiency of device greatly when equipment area is taken up, when discovering the work piece trouble in maintenance position 13 simultaneously, can also remove it to maintenance station 11 and maintain, avoid influencing the processing of follow-up work piece.
Further, the circulation station 2 comprises a support frame 2.1, a limit sleeve 2.2 is installed inside the support frame 2.1, a first guide rail 2.3 and a second guide rail 2.4 are respectively installed above the support frame 2.1, limit rods 2.5 connected with the limit sleeve 2.2 in a sliding manner are installed on the lower sides of the first guide rail 2.3 and the second guide rail 2.4, a plurality of rail-changing cylinders 2.6 are respectively arranged between the support frame 2.1 and the first guide rail 2.3 and the second guide rail 2.4, a circulation turntable 2.7 is arranged on the upper sides of the first guide rail 2.3 and the second guide rail 2.4, a first roller 2.8 connected with the first guide rail 2.3 in a rolling manner and a second roller 2.9 connected with the second guide rail 2.4 in a rolling manner are respectively arranged on the lower side of the circulation turntable 2.7, a connecting frame 2.10 is installed on the outer side of the circulation turntable 2.7, a driving rail 2.11 is installed on one side of the driving rail 2.11, and a clamping and a driving mechanism 2.12 is installed on the upper side of the connecting frame 2.10; as shown in fig. 5, by the connection cooperation between the connection frame 2.10 and the driving mechanism 2.12, when the driving mechanism 2.12 moves above the driving rail 2.11, the turntable 2.7 can be driven to move; as shown in fig. 3, the limiting sleeve 2.2 is arranged inside the supporting frame 2.1, the limiting rod 2.5 is arranged on the lower sides of the first guide rail 2.3 and the second guide rail 2.4, and the sliding fit between the limiting sleeve 2.2 and the limiting rod 2.5 is utilized, when the track-changing cylinder 2.6 is controlled to stretch, the first guide rail 2.3 and the second guide rail 2.4 can be driven to change the height, because the first roller 2.8 and the second roller 2.9 are arranged on the lower side of the flow turntable 2.7, when the first guide rail 2.3 is lifted, the first roller 2.8 is in rolling fit with the first roller so as to drive the flow turntable 2.7 to move in the direction of the first guide rail 2.3, and when the second guide rail 2.4 is lifted, the flow turntable 2.7 is driven to move in the direction of the second guide rail 2.4, so that the moving direction of the flow turntable 2.7 can be quickly changed, and the flow efficiency can be accelerated.
Further, the moulding bed 9 comprises a slide rail 9.1 arranged on the upper side of the flow turntable 2.7, the upper side of the slide rail 9.1 is connected with a slide seat 9.2 in a sliding manner, a moving cylinder 9.3 is arranged between the slide seat 9.2 and the flow turntable 2.7, a sliding fixing frame 9.4 is arranged above the slide seat 9.2, a fixing cylinder 9.5 is arranged between the slide seat 9.2 and the fixing frame 9.4, a pressing tool 9.6 is arranged on the upper side of the fixing frame 9.5, a sucking disc 9.7 is arranged on the upper side of the fixing frame 9.5, a special-shaped pressing support 9.8, a milling support 9.9 and a welding support 9.10 are sequentially arranged on the upper side of the flow turntable 2.7 from front to back, and the pressing tool 9.6, the special-shaped pressing support 9.8, the milling support 9.9 and the welding support 9.10 are all arranged in a left-right symmetrical arrangement manner; as shown in fig. 6, the bumper can be doubly fixed by arranging the presser 9.6 and the suction cup 9.7 above the fixing frame 9.4, and the bumper can be disassembled and assembled by arranging the fixing cylinder 9.5 between the fixing frame 9.4 and the sliding seat 9.2 when the fixing cylinder 9.5 is controlled to stretch and contract; the sliding rail 9.1 and the moving cylinder 9.3 are arranged between the flow turntable 2.7 and the sliding seat 9.2, the special-shaped pressure support 9.8, the milling support 9.9 and the welding support 9.10 are sequentially arranged on the upper side of the flow turntable 2.7, when the flow turntable 2.7 moves to the special-shaped pressure position 5, the bumper can be positioned above the special-shaped pressure support 9.8 by utilizing the stretching of the moving cylinder 9.3, when the flow turntable 2.7 moves to the milling position 6, the bumper can be positioned above the milling support 9.9 by utilizing the stretching of the moving cylinder 9.3, and when the flow turntable 2.7 moves to the flexible welding position 7, the bumper can be positioned above the welding support 9.10 by utilizing the stretching of the moving cylinder 9.3, so that the interference of the bumper with processing equipment in the processing process is reduced, and the processing efficiency of the bumper is also accelerated.
The working principle of the double-circulation flexible automatic production line of the automobile bumper comprises the following steps: the concrete operation steps for fixing the bumper above the tire membrane 9 are as follows: firstly, adjusting the position of each pressing tool 9.6 to enable the pressing tools and the matched suckers 9.7 to be matched with a processed bumper, then placing the bumper above a fixed frame 9.4, adjusting the height of the pressing tools 9.6 by utilizing a mode of enabling fixed cylinders 9.5 to contract, thereby fixing the bumper, and finally moving the bumper to the position above a corresponding station supporting structure in a matched mode along with the movement of a circulation station 2 to a tire membrane 6 and the expansion and contraction of a movable cylinder 9.3;
the circulation principle of the circulation station 2 is as follows: firstly, the height of a first guide rail 2.3 and the height of a second guide rail 2.4 are respectively adjusted by controlling the extension and retraction of a rail transfer cylinder 2.6, so that the guide rail required to be guided is lifted upwards until the guide rail required to be guided and a roller matched with the guide rail can be matched in a rolling manner, then a driving mechanism 2.12 at a corresponding position is started, and the flow rotary table 2.7 is driven to move by utilizing the sliding fit of the driving mechanism 2.12 and a driving rail 2.11, so that the station can be circulated.
In addition: it should be noted that the above-mentioned embodiment is only a preferred embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.
Claims (7)
1. Flexible automation line of car bumper bicirculating, its characterized in that: including being production line body (1) that central symmetry arrangement mode was provided with two places, production line body (1) is including circulation station (2), the inside of circulation station (2) has set gradually from the front to the back and has put a position (3), heating position (4), heterotypic pressure position (5), mill position (6), flexible welding position (7) and get a position (8), fetal membrane (9) are installed to the upside of circulation station (2), put one side of a position (3) and install radar stock district (10), maintenance station (11) are installed to one side of one of them department radar stock district (10), mould storehouse (12) are installed to one side of production line body (1).
2. The automotive bumper double-cycle flexible automatic production line according to claim 1, characterized in that: the workpiece placing position (3), the heating position (4), the special-shaped pressing position (5), the milling position (6), the flexible welding position (7) and the workpiece taking position (8) are arranged in a C-shaped arrangement mode.
3. The automotive bumper double-cycle flexible automatic production line according to claim 1 or 2, characterized in that: an overhaul position (13) is arranged between the piece placing position (3) and the piece taking position (8).
4. The automotive bumper double-cycle flexible automatic production line according to claim 1, characterized in that: station (2) includes support frame (2.1), the internally mounted of support frame (2.1) has stop collar (2.2), first guide rail (2.3) and second guide rail (2.4) are installed respectively to the top of support frame (2.1), first guide rail (2.3) with the downside of second guide rail (2.4) install with stop collar (2.2) sliding connection's gag lever post (2.5), support frame (2.1) respectively with first guide rail (2.3) with be provided with many places between second guide rail (2.4) and become rail cylinder (2.6), first guide rail (2.3) with the upside of second guide rail (2.4) is provided with stream revolving stage (2.7), the downside of stream revolving stage (2.7) be provided with respectively with first guide rail (2.3) rolling connection's first gyro wheel (2.8) with desire second guide rail (2.4) rolling connection's second gyro wheel (2.9), the revolving stage link (2.7) the outside is installed and is connected frame (2.10).
5. The automotive bumper double-cycle flexible automatic production line according to claim 4, characterized in that: drive rail (2.11) are installed to one side of support frame (2.1), the upside of drive rail (2.11) install with actuating mechanism (2.12) of link (2.10) joint.
6. The automotive bumper double-cycle flexible automatic production line according to claim 1, characterized in that: fetal membrane (9) is including installing slide rail (9.1) of class revolving stage (2.7) upside, the upside sliding connection of slide rail (9.1) has slide (9.2), slide (9.2) with install between class revolving stage (2.7) and remove cylinder (9.3), the top of slide (9.2) is provided with gliding mount (9.4), slide (9.2) with install between mount (9.4) stationary cylinder (9.5), tamp (9.6) are installed to the upside of mount (9.5), the upside of mount (9.5) is provided with sucking disc (9.7), the upside of class revolving stage (2.7) is by preceding to the back set gradually heterotypic pressure support (9.8), mill support (9.9) and weld support (9.10).
7. The automotive bumper double-cycle flexible automatic production line according to claim 6, characterized in that: the pressing tool (9.6), the special-shaped pressing support (9.8), the milling support (9.9) and the welding support (9.10) are arranged at multiple positions in a left-right symmetrical mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211019081.0A CN115255839A (en) | 2022-08-24 | 2022-08-24 | Double-circulation flexible automatic production line for automobile bumpers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211019081.0A CN115255839A (en) | 2022-08-24 | 2022-08-24 | Double-circulation flexible automatic production line for automobile bumpers |
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| CN115255839A true CN115255839A (en) | 2022-11-01 |
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| CN202211019081.0A Pending CN115255839A (en) | 2022-08-24 | 2022-08-24 | Double-circulation flexible automatic production line for automobile bumpers |
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| CN110605586A (en) * | 2019-09-19 | 2019-12-24 | 江阴名旭模塑有限公司 | Flexible production line for automobile bumpers and working method thereof |
| CN210878516U (en) * | 2019-09-19 | 2020-06-30 | 江阴名旭模塑有限公司 | Punching welding equipment for automotive upholstery |
| CN213563024U (en) * | 2020-11-10 | 2021-06-29 | 苏州优沃机械设备有限公司 | Car bumper dashes glues all-in-one |
| CN214086254U (en) * | 2020-12-17 | 2021-08-31 | 江阴名旭模塑有限公司 | Automobile bumper fetal membrane conveying and jacking equipment |
| CN113183503A (en) * | 2021-03-04 | 2021-07-30 | 江阴名旭模塑有限公司 | Automatic flexible production line for special-shaped pressing, hole milling and welding of automobile bumper |
| CN215332663U (en) * | 2021-06-24 | 2021-12-28 | 贵州国致科技有限公司 | Track transfer device of punching robot |
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