CN216548698U - Multi-dimensional adjusting device for front edge paper feeding platform - Google Patents
Multi-dimensional adjusting device for front edge paper feeding platform Download PDFInfo
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- CN216548698U CN216548698U CN202122827112.2U CN202122827112U CN216548698U CN 216548698 U CN216548698 U CN 216548698U CN 202122827112 U CN202122827112 U CN 202122827112U CN 216548698 U CN216548698 U CN 216548698U
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Abstract
The utility model discloses a multi-dimensional adjusting device for a front edge paper feeding platform, which comprises at least two groups of adjusting mechanisms, wherein the adjusting mechanisms are symmetrically distributed on the outer sides of side plates of the paper feeding platform at the front side and the rear side of the paper feeding platform along the conveying direction of a corrugated board; each adjusting mechanism comprises a base plate, a transverse adjusting component, a longitudinal adjusting component and a height adjusting component, the base plate is arranged on a cross beam of the paper feeding platform, the transverse adjusting component is arranged on the base plate, the longitudinal adjusting component is arranged on the transverse adjusting component, the height adjusting component is arranged on the longitudinal adjusting component, and the height adjusting component is further connected with a side plate of the paper feeding platform. The multi-dimensional adjusting device for the front edge paper feeding platform is simple in structure, can realize three-dimensional adjustment of the paper fed to the platform, well overcomes the defect that only height adjustment can be carried out in traditional equipment, reduces manual operation, and is beneficial to better improving the coaxiality and the installation precision between the wheel shaft and the output shaft of the gear box in the paper feeding platform.
Description
Technical Field
The utility model relates to the technical field of corrugated paper printing, in particular to a multi-dimensional adjusting device for a front edge paper feeding platform.
Background
In a corrugated cardboard printing line, as shown in fig. 1, a leading edge paper feeding table 1 serves as a core mechanism of a paper feeding section 2 for feeding a corrugated cardboard sheet 4 to a printing section 3 and subsequent processes. The front edge paper feeding platform is an intermittent feeding mechanism and conveys corrugated boards one by one to a printing part for printing. As shown in fig. 2 or fig. 3, the conventional front edge paper feeding platform mainly comprises a gear box 5, a coupler 6, a wheel shaft 7, a paper feeding wheel 8, a paper feeding platform side plate 9, a cross beam 10 and other parts, wherein an output shaft of the gear box is connected with the wheel shaft through the coupler for power transmission, a plurality of paper feeding wheels are arranged on the wheel shaft, and the corrugated board is dragged into a printing part through friction between the paper feeding wheels and the corrugated board when the paper feeding wheels rotate. Generally, a connecting bracket 11 and an adjusting piece 12 are arranged between the side plate and the cross beam of the paper feeding platform, and the side plate of the paper feeding platform is driven to carry out lifting adjustment by using a bolt 13 on the adjusting piece, so that the height of the whole paper feeding platform is adjusted. However, in an actual processing process, it is usually required that a higher coaxiality between an output shaft of the gear box and a wheel shaft must be achieved, otherwise the paper feeding precision and the mechanical life will be affected, but the current adjusting mode only can adjust the height of the paper feeding platform, and the horizontal direction and the longitudinal direction in a horizontal plane need manual adjustment by an installer, so that some unconventional operations are required, time and labor are wasted, mechanical parts are easily damaged, and the adjusting precision is often difficult to achieve the process requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a multi-dimensional adjusting device for a front edge paper feeding platform.
The technical scheme of the utility model is as follows: a multi-dimensional adjusting device for a front edge paper feeding platform comprises at least two groups of adjusting mechanisms, wherein the adjusting mechanisms are symmetrically distributed on the outer sides of side plates of a paper feeding platform at the front side and the rear side of the paper feeding platform along the conveying direction of a corrugated board; each adjusting mechanism comprises a base plate, a transverse adjusting component, a longitudinal adjusting component and a height adjusting component, the base plate is arranged on a cross beam of the paper feeding platform, the transverse adjusting component is arranged on the base plate, the longitudinal adjusting component is arranged on the transverse adjusting component, the height adjusting component is arranged on the longitudinal adjusting component, and the height adjusting component is further connected with a side plate of the paper feeding platform. The number of the adjusting mechanisms can be set according to the actual requirement of the paper feeding platform, but in order to ensure the stability and balance of the paper feeding platform in the adjusting process, the number of the adopted adjusting mechanisms is an even number, four groups can be adopted under the common condition, the four groups are respectively arranged at four corners of the paper feeding platform, namely two ends of each paper feeding platform side plate are respectively provided with one group, and each group of adjusting mechanisms are synchronously adjusted when the paper feeding platform is adjusted. In each adjusting mechanism, the base plate is used as a mounting base of the whole adjusting mechanism, is used for mounting adjusting components of each dimension on one hand, and is connected with a cross beam of the paper feeding platform on the other hand to play a transition role.
The transverse adjusting assembly comprises a transverse moving seat, a first adjusting block and a first adjusting bolt, the first adjusting block is arranged in parallel with the transverse moving seat, and the first adjusting bolt penetrates through the rear end part of the first adjusting block and is connected with one side of the transverse moving seat; the base plate is provided with a first sliding groove, the bottom of the transverse moving seat is provided with a first sliding rail, the first sliding rail is matched with the first sliding groove, and the first adjusting block is fixedly arranged on the base plate.
The transverse moving seat is further provided with a first long hole, and the first long hole is connected with the base plate through a first fastening bolt.
The first adjusting block is connected with the backing plate through a second fastening bolt.
In the transverse adjusting assembly, the transverse moving seat can be pushed to transversely slide relative to the base plate by screwing the first adjusting bolt, so that all the parts mounted on the transverse moving seat are driven to transversely move, and when a plurality of groups of adjusting mechanisms act simultaneously, the transverse position adjustment of the paper feeding platform is realized. After the adjustment is finished, the transverse moving seat is locked and fixed on the base plate through the first fastening bolt.
The longitudinal adjusting assembly comprises a longitudinal moving seat and a second adjusting bolt, the longitudinal moving seat is arranged on the transverse moving seat, a convex block protruding upwards is arranged in the middle of the transverse moving seat, a groove matched with the convex block is arranged at the bottom of the longitudinal moving seat, and the rear end of the second adjusting bolt penetrates through one side of the longitudinal moving seat and is connected with the side face of the convex block on the transverse moving seat.
And a second long hole is formed in the groove of the longitudinal moving seat and is connected with the lug on the transverse moving seat through a third fastening bolt.
The axial direction of the second adjusting bolt is vertical to the axial direction of the first adjusting bolt in a horizontal plane.
The length of the groove on the longitudinal moving seat is greater than that of the lug on the transverse moving seat along the axial direction of the second adjusting bolt.
In the longitudinal adjusting assembly, the longitudinal moving seat longitudinally slides relative to the transverse moving seat by screwing the second adjusting bolt, so that all parts arranged on the longitudinal moving seat are driven to longitudinally move, and when a plurality of groups of adjusting mechanisms act simultaneously, the longitudinal position adjustment of the paper feeding platform is realized. After the adjustment is finished, the longitudinal moving seat is locked and fixed on the transverse moving seat through a third fastening bolt.
The height adjusting assembly comprises a height adjusting seat and a third adjusting bolt, the height adjusting seat is arranged on the longitudinal moving seat, and the third adjusting bolt penetrates through the height adjusting seat along the vertical direction and is connected with the longitudinal moving seat at the rear tail end; one side of the height adjusting seat is connected with the side plate of the paper feeding platform.
The longitudinal moving seat is L-shaped and comprises a vertical part and a horizontal part which are connected, the vertical part is connected with the height adjusting seat, the horizontal part is connected with the transverse moving seat, and the vertical part is also provided with a long through groove along the vertical direction;
the height adjustment seat is the T type, including the horizontal pole portion and the montant portion that are connected, the vertical portion top of indulging the seat that moves is located to the horizontal pole portion, and third adjusting bolt passes end and vertical portion top surface behind the horizontal pole portion and meets, and montant side is equipped with the keybar form boss, and keybar form boss and the meshing of logical groove mutually of elongated, and through fourth fastening bolt and the platform curb plate of form advancing on the vertical pole portion is connected.
In order to enable the multi-dimensional adjusting device to be more stably installed between the transverse side plate and the paper feeding platform side plate, further, a third long hole can be formed in the vertical portion of the longitudinal moving seat, and the third long hole is connected with the paper feeding platform side plate through a fifth fastening bolt.
In the height adjusting assembly, the third adjusting bolt is screwed to drive the height adjusting seat to perform lifting motion relative to the longitudinal moving seat, and the height of the side plate of the paper feeding table fixedly connected with the height adjusting seat is adjusted, so that the height adjustment of the paper feeding platform is realized when a plurality of groups of adjusting mechanisms act simultaneously. After the adjustment is completed, the longitudinal moving seat and the side plate of the paper feeding table are locked and fixed through a fifth fastening bolt.
When the multi-dimensional adjusting device for the front edge paper feeding platform is used, the principle is as follows: the base plate is used as a transitional mounting base, all adjusting mechanisms forming the multi-dimensional adjusting device are mounted between the cross beam and the paper feeding platform, when all dimensional positions of the paper feeding platform need to be finely adjusted, the transverse position (along the conveying direction of the corrugated board) of the paper feeding platform is adjusted by the transverse adjusting component, the longitudinal position (along the direction perpendicular to the conveying direction of the corrugated board in the horizontal plane) of the paper feeding platform is adjusted by the longitudinal adjusting component, the height of the paper feeding platform is adjusted by the height adjusting component, three-dimensional position adjustment is achieved, and coaxiality of a wheel shaft and a gear box conveying shaft in the paper feeding platform is guaranteed to the maximum extent.
Compared with the prior art, the utility model has the following beneficial effects:
the multi-dimensional adjusting device for the front edge paper feeding platform is simple in structure, can realize three-dimensional adjustment of the paper fed to the platform, well overcomes the defect that only height adjustment can be carried out in traditional equipment, reduces manual operation, and is beneficial to better improving the coaxiality and the installation precision between the wheel shaft and the output shaft of the gear box in the paper feeding platform.
In the multi-dimensional adjusting device for the front edge paper feeding platform, the using number of the adjusting mechanisms can be selected according to the specification of the paper feeding platform and the actual production process requirement, and the application is flexible. Meanwhile, in each adjusting mechanism, adjusting bolts are respectively adopted in adjusting assemblies of all dimensions to adjust, and meanwhile, the sliding rail and the sliding groove type structure are matched to play a guiding role, so that high adjusting precision can be achieved.
Drawings
Fig. 1 is a schematic structural diagram of a leading edge paper feeding platform in a printing machine in the prior art.
Fig. 2 is a top view of a conventional lead edge paper feed platform.
Fig. 3 is a sectional view taken along the line a-a of fig. 2.
Fig. 4 is a top view of the leading edge paper feeding platform provided with the multi-dimensional adjusting device.
Fig. 5 is a sectional view taken along the direction B-B of fig. 4.
Fig. 6 is a schematic perspective view of the single set of adjustment mechanism in fig. 4.
FIG. 7 is a schematic diagram of the components of the single set of adjustment mechanisms of FIG. 6 shown disassembled.
In the above figures, the components indicated by the respective reference numerals are as follows:
1 is a front edge paper feeding platform, 2 is a paper feeding part, 3 is a printing part, 4 is a corrugated board, 5 is a gear box, 6 is a coupler, 7 is a wheel shaft, 8 is a paper feeding wheel, 9 is a paper feeding table side plate, 10 is a cross beam, 11 is a connecting support, 12 is an adjusting piece, and 13 is a bolt;
14 is an adjusting mechanism, 15 is a backing plate, 16 is a traverse seat, 17 is a first adjusting block, 18 is a first adjusting bolt, 19 is a first sliding groove, 20 is a first sliding rail, 21 is a first long hole, 22 is a first fastening bolt, 23 is a second fastening bolt, 24 is a longitudinal seat, 25 is a second adjusting bolt, 26 is a projection, 27 is a groove, 28 is a second long hole, 29 is a third fastening bolt, 30 is a height adjusting seat, 31 is a third adjusting bolt, 32 is a fourth fastening bolt, 33 is a third long hole, 34 is a fifth fastening bolt, and 35 is an elongated through groove.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Examples
The multi-dimensional adjusting device for the front edge paper feeding platform of the embodiment comprises four groups of adjusting mechanisms 14, as shown in fig. 4, wherein the adjusting mechanisms are symmetrically distributed at the outer sides of the side plates 9 of the paper feeding platform at the front side and the rear side of the paper feeding platform along the conveying direction of the corrugated board; as shown in fig. 5, each of the adjusting mechanisms includes a backing plate 15, a lateral adjusting assembly, a longitudinal adjusting assembly and a height adjusting assembly, the backing plate is disposed on the beam 10 of the paper feeding platform, the lateral adjusting assembly is disposed on the backing plate, the longitudinal adjusting assembly is disposed on the lateral adjusting assembly, the height adjusting assembly is disposed on the longitudinal adjusting assembly, and the height adjusting assembly is further connected to the side plate of the paper feeding platform. The number of the adjusting mechanisms can be set according to the actual requirement of the paper feeding platform, but in order to ensure the stability and balance of the paper feeding platform in the adjusting process, the number of the adopted adjusting mechanisms is an even number, four groups can be adopted under the common condition, the four groups are respectively arranged at four corners of the paper feeding platform, namely two ends of each paper feeding platform side plate are respectively provided with one group, and each group of adjusting mechanisms are synchronously adjusted when the paper feeding platform is adjusted. In each adjusting mechanism, the base plate is used as a mounting base of the whole adjusting mechanism, is used for mounting adjusting components of each dimension on one hand, and is connected with a cross beam of the paper feeding platform on the other hand to play a transition role.
As shown in fig. 5 to 7, the specific structure of each adjustment assembly is as follows:
the transverse adjusting assembly comprises a transverse moving seat 16, a first adjusting block 17 and a first adjusting bolt 18, the first adjusting block and the transverse moving seat are arranged in parallel, and the first adjusting bolt penetrates through the rear end part of the first adjusting block and is connected with one side of the transverse moving seat; the backing plate is provided with a first sliding groove 19 (as shown in fig. 7), the bottom of the transverse moving seat is provided with a first sliding rail 20, the first sliding rail is matched with the first sliding groove, and the first adjusting block is fixedly arranged on the backing plate. The transverse moving seat is also provided with a first long hole 21, and the first long hole is connected with the backing plate through a first fastening bolt 22. The first adjusting block is connected to the pad plate by a second fastening bolt 23. In the transverse adjusting assembly, the transverse moving seat can be pushed to transversely slide relative to the base plate by screwing the first adjusting bolt, so that all the parts mounted on the transverse moving seat are driven to transversely move, and when a plurality of groups of adjusting mechanisms act simultaneously, the transverse position adjustment of the paper feeding platform is realized. After the adjustment is finished, the transverse moving seat is locked and fixed on the base plate through the first fastening bolt.
The longitudinal adjusting component comprises a longitudinal moving seat 24 and a second adjusting bolt 25, the longitudinal moving seat is arranged on the transverse moving seat, the middle part of the transverse moving seat is provided with a convex block 26 which protrudes upwards, the bottom of the longitudinal moving seat is provided with a groove 27 which is matched with the convex block, and the rear end of the second adjusting bolt which penetrates through one side of the longitudinal moving seat is connected with the side surface of the convex block on the transverse moving seat. The groove of the longitudinal moving seat is provided with a second long hole 28, and the second long hole is connected with the lug on the transverse moving seat through a third fastening bolt 29. The axial direction of the second adjusting bolt is vertical to the axial direction of the first adjusting bolt in a horizontal plane. The length of the groove on the longitudinal moving seat is greater than that of the lug on the transverse moving seat along the axial direction of the second adjusting bolt. In the longitudinal adjusting assembly, the longitudinal moving seat longitudinally slides relative to the transverse moving seat by screwing the second adjusting bolt, so that all parts arranged on the longitudinal moving seat are driven to longitudinally move, and when a plurality of groups of adjusting mechanisms act simultaneously, the longitudinal position adjustment of the paper feeding platform is realized. After the adjustment is finished, the longitudinal moving seat is locked and fixed on the transverse moving seat through a third fastening bolt.
The height adjusting assembly comprises a height adjusting seat 30 and a third adjusting bolt 31, the height adjusting seat is arranged on the longitudinal moving seat, and the third adjusting bolt penetrates through the height adjusting seat along the vertical direction and is connected with the longitudinal moving seat at the rear tail end; one side of the height adjusting seat is connected with the side plate of the paper feeding platform. As shown in fig. 6 or 7, the vertical moving seat is L-shaped and comprises a vertical part and a horizontal part which are connected, the vertical part is connected with the height adjusting seat, the horizontal part is connected with the horizontal moving seat, and the vertical part is also provided with a long through groove 35 along the vertical direction; the height adjustment seat is the T type, including the horizontal pole portion and the montant portion that are connected, and the vertical portion top of indulging the seat that moves is located to the horizontal pole portion, and third adjusting bolt passes behind the horizontal pole portion terminal and meets with vertical portion top surface, and montant side is equipped with keybar form boss, and keybar form boss and the meshing of logical groove mutually of elongated, and through fourth fastening bolt 32 and the platform curb plate of form advancing on the vertical pole portion is connected. In order to enable the multi-dimensional adjusting device to be stably installed between the transverse side plate and the paper feeding platform side plate, a third long hole 33 can be further formed in the vertical portion of the longitudinal moving seat, and the long hole is connected with the paper feeding platform side plate through a fifth fastening bolt 34. In the height adjusting assembly, the third adjusting bolt is screwed to drive the height adjusting seat to perform lifting motion relative to the longitudinal moving seat, and the height of the side plate of the paper feeding table fixedly connected with the height adjusting seat is adjusted, so that the height adjustment of the paper feeding platform is realized when a plurality of groups of adjusting mechanisms act simultaneously. After the adjustment is completed, the longitudinal moving seat and the side plate of the paper feeding table are locked and fixed through a fifth fastening bolt.
When the multi-dimensional adjusting device for the front edge paper feeding platform is used, the principle is as follows: the base plate is used as a transitional mounting base, all adjusting mechanisms forming the multi-dimensional adjusting device are mounted between the cross beam and the paper feeding platform, when all dimensional positions of the paper feeding platform need to be finely adjusted, the transverse position (namely along the conveying direction of the corrugated board) of the paper feeding platform is adjusted by the transverse adjusting component, the longitudinal position (namely along the direction perpendicular to the conveying direction of the corrugated board in the horizontal plane) of the paper feeding platform is adjusted by the longitudinal adjusting component, the height of the paper feeding platform is adjusted by the height adjusting component, position adjustment of three dimensions is realized, and the coaxiality of a wheel shaft and a gear box conveying shaft in the paper feeding platform is ensured to the maximum extent.
When the multi-dimensional adjusting device is used for adjusting the front edge paper feeding platform, the method comprises the following steps: when the paper feeding platform needs to be transversely adjusted, the first fastening bolts on the transverse moving seats are loosened, and the first adjusting bolts positioned on the outer sides of the side plates of the same paper feeding platform are alternately screwed, so that the paper feeding platform can be driven to transversely move; when the longitudinal adjustment is needed, the third fastening bolts on each longitudinal moving seat are loosened, and the second adjusting bolts on the same cross beam are alternately screwed, so that the paper feeding platform can be driven to longitudinally move; when the height needs to be adjusted, the fifth fastening bolts between the longitudinal moving seats and the side plates of the paper feeding platform are loosened, and the third adjusting bolts on the adjusting mechanisms are alternately screwed, so that the paper feeding platform can be driven to perform lifting motion. Through appropriate adjustment in the transverse direction, the longitudinal direction and the height direction, higher coaxiality between the wheel shaft and the output shaft of the gear box in the paper feeding platform can be well guaranteed.
As mentioned above, the present invention can be better realized, and the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; it is intended that all equivalent variations and modifications made in accordance with the present disclosure be covered by the scope of the present invention as defined in the appended claims.
Claims (10)
1. A multi-dimensional adjusting device for a front edge paper feeding platform is characterized by comprising at least two groups of adjusting mechanisms, wherein the adjusting mechanisms are symmetrically distributed on the outer sides of side plates of a paper feeding platform at the front side and the rear side of the paper feeding platform along the conveying direction of a corrugated board; each adjusting mechanism comprises a base plate, a transverse adjusting component, a longitudinal adjusting component and a height adjusting component, the base plate is arranged on a cross beam of the paper feeding platform, the transverse adjusting component is arranged on the base plate, the longitudinal adjusting component is arranged on the transverse adjusting component, the height adjusting component is arranged on the longitudinal adjusting component, and the height adjusting component is further connected with a side plate of the paper feeding platform.
2. The multi-dimensional adjusting device for the front edge paper feeding platform as claimed in claim 1, wherein the transverse adjusting assembly comprises a traverse motion seat, a first adjusting block and a first adjusting bolt, the first adjusting block is arranged in parallel with the traverse motion seat, and the first adjusting bolt passes through the rear end part of the first adjusting block and is connected with one side of the traverse motion seat; the base plate is provided with a first sliding groove, the bottom of the transverse moving seat is provided with a first sliding rail, the first sliding rail is matched with the first sliding groove, and the first adjusting block is fixedly arranged on the base plate.
3. The multi-dimensional adjusting device for the front edge paper feeding platform as claimed in claim 2, wherein the traverse seat is further provided with a first long hole, and the first long hole is connected with the backing plate through a first fastening bolt.
4. The multi-dimensional adjusting device for the front edge paper feeding platform as claimed in claim 2, wherein the first adjusting block is connected with the backing plate through a second fastening bolt.
5. The multi-dimensional adjusting device for the front edge paper feeding platform as claimed in claim 2, wherein the longitudinal adjusting assembly comprises a longitudinal moving seat and a second adjusting bolt, the longitudinal moving seat is arranged on the transverse moving seat, the middle part of the transverse moving seat is provided with a convex block protruding upwards, the bottom of the longitudinal moving seat is provided with a groove matched with the convex block, and the second adjusting bolt penetrates through one side of the longitudinal moving seat and then the tail end of the second adjusting bolt is connected with the side surface of the convex block on the transverse moving seat.
6. The multi-dimensional adjusting device for the front edge paper feeding platform as claimed in claim 5, wherein a second long hole is arranged at the groove of the longitudinal moving seat, and the second long hole is connected with a lug on the transverse moving seat through a third fastening bolt.
7. The multi-dimensional adjusting device for the front edge paper feeding platform as claimed in claim 5, wherein the axial direction of the second adjusting bolt is perpendicular to the axial direction of the first adjusting bolt in a horizontal plane.
8. The multi-dimensional adjusting device for the front edge paper feeding platform as claimed in claim 5, wherein the length of the groove on the longitudinal moving seat is greater than the length of the projection on the transverse moving seat along the axial direction of the second adjusting bolt.
9. The multi-dimensional adjusting device for the front edge paper feeding platform as claimed in claim 5, wherein the height adjusting assembly comprises a height adjusting seat and a third adjusting bolt, the height adjusting seat is arranged on the longitudinal moving seat, and the third adjusting bolt penetrates through the rear end of the height adjusting seat along the vertical direction and is connected with the longitudinal moving seat; one side of the height adjusting seat is connected with the side plate of the paper feeding platform.
10. The multi-dimensional adjusting device for the front edge paper feeding platform as claimed in claim 9, wherein the longitudinal moving seat is L-shaped and comprises a vertical part and a horizontal part which are connected, the vertical part is connected with the height adjusting seat, the horizontal part is connected with the transverse moving seat, and the vertical part is further provided with a long through groove along the vertical direction;
the height adjustment seat is the T type, including the horizontal pole portion and the montant portion that are connected, the vertical portion top of indulging the seat that moves is located to the horizontal pole portion, and third adjusting bolt passes end and vertical portion top surface behind the horizontal pole portion and meets, and montant side is equipped with the keybar form boss, and keybar form boss and the meshing of logical groove mutually of elongated, and through fourth fastening bolt and the platform curb plate of form advancing on the vertical pole portion is connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122827112.2U CN216548698U (en) | 2021-11-17 | 2021-11-17 | Multi-dimensional adjusting device for front edge paper feeding platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122827112.2U CN216548698U (en) | 2021-11-17 | 2021-11-17 | Multi-dimensional adjusting device for front edge paper feeding platform |
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| Publication Number | Publication Date |
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| CN216548698U true CN216548698U (en) | 2022-05-17 |
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| CN202122827112.2U Active CN216548698U (en) | 2021-11-17 | 2021-11-17 | Multi-dimensional adjusting device for front edge paper feeding platform |
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| CN (1) | CN216548698U (en) |
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2021
- 2021-11-17 CN CN202122827112.2U patent/CN216548698U/en active Active
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