CN107284014B - Tooth position setting device and die cutting machine - Google Patents
Tooth position setting device and die cutting machine Download PDFInfo
- Publication number
- CN107284014B CN107284014B CN201710511123.5A CN201710511123A CN107284014B CN 107284014 B CN107284014 B CN 107284014B CN 201710511123 A CN201710511123 A CN 201710511123A CN 107284014 B CN107284014 B CN 107284014B
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- positioning
- swing rod
- die cutting
- driving
- swing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/01—Means for holding or positioning work
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention provides a tooth positioning device and a die cutting machine comprising the same, wherein the tooth positioning device comprises a front positioning module and a rear positioning module; the front positioning module is arranged at the input end of the die cutting unit, the rear positioning module is arranged at the output end of the die cutting unit, the front positioning module and the rear positioning module both comprise positioning swinging rods, the reference surface of the positioning swinging rods of the front positioning module is matched with the positioning surface arranged at the rear of the dental row, and the reference shaft of the positioning swinging rods of the rear positioning module is matched with the positioning surface arranged at the rear of the dental row. The tooth positioning device can be used for positioning successfully without overcoming the stretching amount of the chain.
Description
Technical Field
The invention relates to a positioning device, in particular to a tooth positioning device and a die cutting machine comprising the same.
Background
The existing multi-unit die-cutting thermoprinting equipment in the market (patent number ZL 200410093700.6) utilizes a multi-unit die-pressing unit and an aluminum foil control unit to complete required multiple thermoprinting (or indentation) and die-cutting work, so that the production efficiency is greatly improved, and the production period is shortened. However, since the sheet to be transported in such an apparatus is usually gripper-transported by plural sets of gripper bars mounted in parallel on the gripper bars, the gripper bars enter the respective machine stations in a closed-loop path to perform the molding work. Because the closed chain is longer, and the tension and direction applied to the closed chain are frequently changed in the long-term use process, the deformation of the chain is caused, and the accumulated error of the chain greatly reduces the machining precision of equipment. For the machining errors caused by chain deformation errors which are difficult to avoid, the existing positioning device cannot be finely adjusted in time, and the positioning deviation directly influences the subsequent machining precision. In order to ensure the processing precision and quality of paper, frequent shutdown adjustment is often required, the adjustment mode is time-consuming and labor-consuming, the working efficiency of equipment is reduced, and the labor cost is increased. In addition, when equipment has multiple unit stations, often need to check the fine setting to each station positioner in proper order, the locate mode of paper is loaded down with trivial details and inaccurate.
Because the alignment direction of the gripper bars is consistent with the paper running direction in the prior art, after the gripper bars stop moving, the positioning blocks of the die cutting machine can prop against the positioning surfaces of the gripper bars along the paper running direction, so that a certain amount of gaps are formed between the gripper bar bodies and the gripper bar connecting pieces. When the chain is stretched and lengthened for a long time, the positioning block of the die cutting machine needs to overcome the stretching amount of the chain, then the gripper bar is positioned, if the chain stretching amount is large, the gripper bar is positioned in place (gaps cannot occur), and at the moment, a new chain needs to be replaced. When the gripper bar is ready to move, the gripper bar moves backwards along the reverse direction of the paper running direction and then moves forwards, so that the paper is easy to scatter in the die cutting machine, and the alarm stop is caused.
Disclosure of Invention
The invention provides a tooth positioning device with simple structure and excellent performance and a single-unit die-cutting machine comprising the same, aiming at the problems existing in the existing tooth positioning device technology.
One embodiment of the invention provides a tooth positioning device for a die cutting machine comprising a group of die cutting units, wherein paper passing through the die cutting units is conveyed by a tooth row arranged on a chain, and the tooth positioning device comprises a front positioning module and a rear positioning module; the front positioning module is arranged at the input end of the die cutting unit, the rear positioning module is arranged at the output end of the die cutting unit, the front positioning module and the rear positioning module both comprise positioning swinging rods, the reference surface of the positioning swinging rods of the front positioning module is matched with the positioning surface arranged at the rear of the dental row, and the reference shaft of the positioning swinging rods of the rear positioning module is matched with the positioning surface arranged at the rear of the dental row.
According to the tooth positioning device of the embodiment of the invention, the front positioning module comprises a driving cam, a driving swing rod, a connecting rod, a tension spring, a positioning swing rod, a rotating shaft, a datum plane and a bearing.
According to the tooth positioning device of the embodiment of the invention, the driving cam of the front positioning module is matched with the bearing for driving, one end of the driving swing rod is arranged on the bearing, the other end of the driving swing rod is connected with one end of the connecting rod, and the other end of the driving swing rod is connected with the die cutting machine through the other bearing; one end of the tension spring is connected with the connecting rod, and the other end of the tension spring is fixed with the die cutting machine; the other end of the connecting rod is connected with one end of the positioning swing rod, the positioning swing rod is arranged on the rotating shaft, and the other end of the positioning swing rod is provided with a datum plane matched with the tooth positioning plane.
According to the tooth positioning device of the embodiment of the invention, the rear positioning module comprises a driving unit, a connecting rod and a swinging unit.
According to the tooth positioning device of the embodiment of the invention, the driving unit comprises a driving cam, a driving swing rod and a driving bearing.
According to the tooth positioning device of the embodiment of the invention, the swinging unit comprises a first swinging rod, a second swinging rod, a first swinging connecting rod, a second swinging connecting rod, a positioning swinging rod, a swinging tension spring, a positioning block and a positioning tension spring; and a reference shaft is arranged on the positioning swing rod.
According to the tooth positioning device of the embodiment of the invention, the driving cam is matched with the driving bearing for driving; one end of the driving swing rod is connected with the driving bearing, the other end of the driving swing rod is connected with one end of the connecting rod, the other end of the connecting rod is connected with one end of the first swing rod, the other end of the first swing rod is connected with one end of the first swing connecting rod, the other end of the first swing rod is connected with one end of the positioning tension spring, the other end of the positioning tension spring is connected with the die cutting machine, the other end of the first swing rod is connected with one end of the second swing rod, the other end of the second swing rod is simultaneously connected with the positioning connecting rod and the second swing rod, the other end of the positioning connecting rod is connected with one end of the positioning swing rod, the positioning rod is connected with the positioning block, the positioning block is fixed on the die cutting machine, one end of the swing tension spring is connected with the second swing rod, and the other end of the swing tension spring is connected with the die cutting machine; the positioning swing rod is matched with a positioning surface arranged at the rear of the dental row through a reference shaft.
Another embodiment of the present invention provides a die-cutting machine, wherein the die-cutting machine includes a paper feeding unit, a group of die-cutting units and a paper receiving unit connected in sequence, and paper passing through the die-cutting units is conveyed by a gripper bar disposed on a chain, and the die-cutting machine further includes a gripper bar positioning device according to the above embodiment.
The tooth positioning device is suitable for a single-unit die cutting machine, and when the positioning block of the die cutting machine moves away from the positioning surface of the gripper bar, the gripper bar can move forwards along the paper running direction because the chain does not move at the moment, and the moving direction is consistent with the paper running direction, so that the risk that paper is scattered in the die cutting machine is greatly reduced, and the die cutting machine is more beneficial to being used under high-speed running. When the chain is stretched for a long time, the original structure needs to overcome the stretching amount of the chain and then can be positioned, and when the stretching amount of the chain is large, the chain needs to be replaced. The novel structure can be positioned successfully without overcoming the stretching amount of the chain, so that the applicability of the tooth row is improved, and the service life of the chain is prolonged.
Drawings
FIG. 1 is a schematic view of a front positioning module structure for a die cutting machine including a set of die cutting units according to one embodiment of the present invention;
fig. 2 is a schematic view of a rear positioning module structure for a die cutting machine including a set of die cutting units according to an embodiment of the present invention.
Detailed Description
In order to better illustrate the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention.
One embodiment of the invention provides a tooth positioning device which is used for a die cutting machine comprising a group of die cutting units, wherein paper passing through the die cutting units is conveyed by a tooth row arranged on a chain, the tooth positioning device comprises a front positioning module and a rear positioning module, the front positioning module is arranged at the input end of the die cutting unit, and the rear positioning module is arranged at the output end of the die cutting unit; the front positioning module and the rear positioning module comprise positioning swinging rods capable of rotating around a rotating shaft, a reference surface 10 of the positioning swinging rods of the front positioning module is matched with a positioning surface 9 arranged at the rear of the dental row, and a reference shaft of the positioning swinging rods of the rear positioning module is matched with the positioning surface 9 arranged at the rear of the dental row.
Fig. 1 is a schematic view showing a front positioning module structure for a die cutting machine including a set of die cutting units according to an embodiment of the present invention. As shown in fig. 1, the front positioning module comprises a driving cam 1, a driving swing rod 2, a connecting rod 3, a tension spring 4, a positioning swing rod 5, a rotating shaft 6, a reference surface 10 and a bearing 11. The driving cam 1 of the front positioning module is driven in a matched manner with the bearing 11, one end of the driving swing rod 2 is arranged on the bearing 11, the other end of the driving swing rod is connected with one end of the connecting rod 3, and the other end of the driving swing rod is connected with the die cutting machine through the bearing 202; one end 4b of the tension spring 4 is connected with the connecting rod 3, and the other end 4a is fixed with the die cutting machine; the other end of the connecting rod 3 is connected with one end of a positioning swing rod 5, the positioning swing rod 5 is arranged on a rotating shaft 6, and the rotating shaft 6 is fixed on a fixed block 200; the other end of the positioning swing rod 5 is provided with a reference surface 10 matched with the tooth position positioning 9; the paper 8 is positioned on the row 7. The two ends of the tooth row 7 are fixed on two closed and parallel transmission chains. In the figure, F11 denotes a sheet running direction, the direction indicated by an arrow is a sheet running front, and the opposite direction of the arrow is a sheet running rear; f12 means a counterclockwise rotation direction of the driving cam 1.
Before positioning: the driving cam 1 is tightly attached to the bearing 11 to do tangential motion, when the driving cam 1 rotates anticlockwise to move towards a cam high point, the contact surface between the bearing 11 and the driving cam 1 changes along with the movement, the driving swing rod 2 drives the connecting rod 3 to do downward motion, and the connecting rod 3 drives the positioning swing rod 5 to rotate clockwise around the rotating shaft 6, so that the reference surface 10 moves upwards and is ready for starting positioning.
Positioning: when the driving cam 1 rotates anticlockwise to the highest point of the cam, the contact surface between the bearing 11 and the driving cam 1 changes, the driving swing rod 2 drives the connecting rod 3 to move downwards, the connecting rod 3 drives the positioning swing rod 5 to rotate clockwise around the rotating shaft 6, the reference surface 10 moves upwards to the highest point, and the positioning position is completed for the positioning surface 9 of the gripper bar 7 to be positioned in contact with.
After positioning: the driving cam 1 is tightly attached to the bearing 11 to do tangential motion, when the driving cam 1 rotates anticlockwise to move towards the cam low point, the contact surface between the bearing 11 and the driving cam 1 changes along with the movement, the driving swing rod 2 drives the connecting rod 3 to move upwards, the connecting rod 3 drives the positioning swing rod 5 to rotate anticlockwise around the rotating shaft 6, the reference surface 10 moves downwards and is separated from the positioning surface 9 of the gripper bar 7, and space is reserved for the forward movement of the gripper bar 7.
Fig. 2 is a schematic view of a rear positioning module structure for a die cutting machine including a set of die cutting units according to an embodiment of the present invention. As shown in fig. 2, the rear positioning module comprises a driving unit, a connecting rod 14 and a swinging unit which are sequentially connected, wherein the driving unit comprises a driving cam 101, a driving swinging rod 12 and a driving bearing 13; the swinging unit comprises a first swinging swing rod 15, a second swinging swing rod 17, a first swinging connecting rod 16a, a second swinging connecting rod 16b, a positioning connecting rod 18, a positioning swing rod 19, a swinging tension spring 20, a positioning block 21 and a positioning tension spring 22. The driving cam 101 is driven in a matched manner with the driving bearing 13; one end of the driving swing rod 12 is connected with the driving bearing 13, the other end is connected with one end of the connecting rod 14, the other end of the connecting rod 14 is connected with one end of the first swing rod 15, the other end of the first swing rod 15 is connected with one end of the first swing connecting rod 16a, the other end of the first swing rod 15 is connected with one end 22b of the positioning tension spring 22, the other end of the first swing connecting rod 16a is connected with one end of the second swing connecting rod 16b, the other end of the second swing connecting rod 16b is simultaneously connected with the positioning connecting rod 18 and the second swing rod 17, the other end of the positioning connecting rod 18 is connected with one end of the positioning swing rod 19, the other end of the positioning swing rod 19 is connected with the positioning block 21, and the positioning block 21 is fixed on the die cutting machine. One end 20b of the swing tension spring 20 is connected with the second swing rod 17; the positioning swing rod 19 is provided with a reference shaft 19a, the positioning swing rod 19 is matched with the positioning surface 9 arranged behind the dental row 7 through the reference shaft 19a, and the paper 8 is positioned on the dental row 7. The other end 22a of the positioning tension spring 22 is connected with a die cutting machine. The other end 20a of the swing tension spring 20 is connected to a die cutter. In the drawing, F21 denotes a sheet running direction, a direction indicated by an arrow F21 is a sheet running front, an opposite direction of the arrow F21 is a sheet running rear, and F22 denotes a counterclockwise rotation direction of the driving cam 101.
Before positioning: the driving cam 101 rotates anticlockwise to move towards the cam low point, the contact surface between the driving bearing 13 and the driving cam 101 changes along with the movement, the driving swing rod 12 drives the connecting rod 14 to move upwards, the connecting rod 14 drives the first swing rod 15 to rotate clockwise, the first swing rod 15 drives the second swing rod 17 and the positioning connecting rod 18 to move leftwards through the first swing connecting rod 16a, so that the positioning swing rod 19 moves downwards and is ready for starting positioning.
Positioning: when the driving cam 101 rotates anticlockwise to the lowest point of the cam, the contact surface between the driving bearing 13 and the driving cam 101 changes, the driving swing rod 12 drives the connecting rod 14 to move upwards to the highest point, the connecting rod 14 drives the first swing rod 15 to rotate clockwise, the first swing rod 15 drives the second swing rod 17 and the positioning connecting rod 18 to move leftwards through the first swing connecting rod 16a, and the positioning swing rod 19 moves downwards to the positioning position of the lowest point to finish the contact positioning of the waiting tooth row and the waiting tooth row.
After positioning: the driving cam 101 rotates anticlockwise to move towards the high point of the cam, the contact surface of the driving bearing 13 and the driving cam 101 changes along with the movement, the driving swing rod 12 drives the connecting rod 14 to move downwards, the connecting rod 14 drives the first swing rod 15 to rotate anticlockwise, the first swing rod 15 drives the second swing rod 17 and the positioning connecting rod 18 to move rightwards through the first swing connecting rod 16a, the positioning swing rod 19 moves upwards to enable the positioning shaft to be separated from the positioning surface of the gripper bar 7, and space is reserved for the forward movement of the gripper bar 7.
The power sources of all driving cams of the die cutting machine are provided by the main motor of the die cutting machine, the main motor drives the driving cams to rotate through the transmission system, and the driving cams are fixed with the cam shaft in a key slot mode, so that the driving cams and the die cutting machine synchronously rotate.
Another aspect of the present invention provides a die cutting machine comprising a sheet feeding unit, a set of die cutting units and a sheet receiving unit connected in sequence, the sheet passing through the die cutting units being conveyed by a row of teeth provided on a chain, the die cutting machine further comprising a tooth positioning device as described above.
The tooth row positioning device has the advantage that the rear positioning surface arranged on the tooth row is matched with the corresponding reference surface and the corresponding reference shaft to realize accurate positioning of the tooth row. The tension springs in each module enable the driving cam to be tightly matched with the bearing contacted with the driving cam all the time, and the phenomenon of separation and detachment can not occur.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the scope of the present invention are intended to be included in the scope of the present invention.
Claims (6)
1. A tooth positioning device for a die cutting machine comprising a group of die cutting units, wherein paper passing through the die cutting units is conveyed by a tooth row arranged on a chain, and the tooth positioning device comprises a front positioning module and a rear positioning module; the front positioning module is arranged at the input end of the die cutting unit, the rear positioning module is arranged at the output end of the die cutting unit, the front positioning module and the rear positioning module both comprise positioning swinging rods, the reference surface of the positioning swinging rods of the front positioning module is matched with the positioning surface arranged at the rear of the dental row, and the reference shaft of the positioning swinging rods of the rear positioning module is matched with the positioning surface arranged at the rear of the dental row;
the front positioning module comprises a driving cam, a driving swing rod, a connecting rod, a tension spring, a positioning swing rod, a rotating shaft, a datum plane and a bearing; the driving cam of the front positioning module is driven in a matched manner with the bearing, one end of the driving swing rod is arranged on the bearing, the other end of the driving swing rod is connected with one end of the connecting rod, and the other end of the driving swing rod is connected with the die cutting machine through the other bearing; one end of the tension spring is connected with the connecting rod, and the other end of the tension spring is fixed with the die cutting machine; the other end of the connecting rod is connected with one end of the positioning swing rod, the positioning swing rod is arranged on the rotating shaft, and the other end of the positioning swing rod is provided with a datum plane matched with the tooth positioning plane;
when the positioning block of the die cutting machine moves away from the positioning surface of the gripper bar, the gripper bar moves forwards along the paper running direction as the chain does not start to move at the moment, and the moving direction is consistent with the paper running direction;
before positioning, the reference surface of the positioning swing rod of the front positioning module moves upwards, and the positioning swing rod of the rear positioning module moves downwards;
during positioning, the reference surface of the positioning swing rod of the front positioning module moves upwards to the highest point, and the positioning position is positioned by contact with the positioning surface of the gripper bar; the positioning swing rod of the rear positioning module moves downwards to the lowest point to finish the contact positioning of the waiting dental row and the rear positioning module;
after positioning, the reference surface of the positioning swing rod of the front positioning module moves downwards and is separated from the positioning surface of the gripper bar, so that a space is reserved for the gripper bar to move forwards; the positioning swing rod of the rear positioning module moves upwards to enable the reference shaft to be separated from the positioning surface of the gripper bar, and space is reserved for the gripper bar to move forwards.
2. The tooth positioning device as claimed in claim 1, characterized in that said rear positioning module includes a driving unit, a link and a swinging unit.
3. The tooth positioning device as claimed in claim 2, characterized in that said driving unit includes a driving cam, a driving swing link and a driving bearing.
4. The tooth positioning device as claimed in claim 3, wherein the swing unit includes a first swing link, a second swing link, a positioning link, a swing tension spring, a positioning block, and a positioning tension spring; and a reference shaft is arranged on the positioning swing rod.
5. The tooth positioning device as claimed in claim 4, characterized in that said driving cam is driven in cooperation with a driving bearing; one end of the driving swing rod is connected with the driving bearing, the other end of the driving swing rod is connected with one end of the connecting rod, the other end of the connecting rod is connected with one end of the first swing rod, the other end of the first swing rod is connected with one end of the first swing connecting rod, the other end of the first swing rod is connected with one end of the positioning tension spring, the other end of the positioning tension spring is connected with the die cutting machine, the other end of the first swing rod is connected with one end of the second swing rod, the other end of the second swing rod is simultaneously connected with the positioning connecting rod and the second swing rod, the other end of the positioning connecting rod is connected with one end of the positioning swing rod, the positioning rod is connected with the positioning block, the positioning block is fixed on the die cutting machine, one end of the swing tension spring is connected with the second swing rod, and the other end of the swing tension spring is connected with the die cutting machine; the positioning swing rod is matched with a positioning surface arranged at the rear of the dental row through a reference shaft.
6. A die cutting machine, characterized in that the die cutting machine comprises a paper feeding unit, a group of die cutting units and a paper collecting unit which are connected in sequence, paper passing through the die cutting units is conveyed by a tooth row arranged on a chain, wherein the die cutting machine further comprises a tooth positioning device according to any one of claims 1-5.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016105290508 | 2016-07-07 | ||
| CN201610529416.1A CN106183394A (en) | 2016-07-07 | 2016-07-07 | The accurate-location device of a kind of set type die-cutting machine and method of work thereof |
| CN201610529050.8A CN105966058A (en) | 2016-07-07 | 2016-07-07 | Positioning micro-adjusting device applicable to unit type die cutting and hot foil stamping machine and working method thereof |
| CN2016105294161 | 2016-07-07 | ||
| CN201710318788 | 2017-05-08 | ||
| CN201720507339 | 2017-05-08 | ||
| CN2017103187884 | 2017-05-08 | ||
| CN201720507339X | 2017-05-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107284014A CN107284014A (en) | 2017-10-24 |
| CN107284014B true CN107284014B (en) | 2023-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720776511.1U Active CN207142373U (en) | 2016-07-07 | 2017-06-29 | Tooth row locating device and die-cutting machine |
| CN201710511123.5A Active CN107284014B (en) | 2016-07-07 | 2017-06-29 | Tooth position setting device and die cutting machine |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720776511.1U Active CN207142373U (en) | 2016-07-07 | 2017-06-29 | Tooth row locating device and die-cutting machine |
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| CN (2) | CN207142373U (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207142373U (en) * | 2016-07-07 | 2018-03-27 | 天津长荣科技集团股份有限公司 | Tooth row locating device and die-cutting machine |
| CN108274536B (en) * | 2018-02-09 | 2024-02-13 | 东莞智源彩印有限公司 | Automatic die cutting precision adjusting device |
| JP6908894B2 (en) * | 2018-03-30 | 2021-07-28 | ブラザー工業株式会社 | Cutting device |
| JP6927120B2 (en) * | 2018-03-30 | 2021-08-25 | ブラザー工業株式会社 | Cutting device |
| JP6930474B2 (en) * | 2018-03-30 | 2021-09-01 | ブラザー工業株式会社 | Cutting device |
| CN109291634B (en) * | 2018-08-27 | 2020-07-14 | 扬中市惠丰包装有限公司 | Printing machine with gripper bar positioning device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107284014A (en) | 2017-10-24 |
| CN207142373U (en) | 2018-03-27 |
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