CN211589330U - Cylinder connecting part structure of clamping and tensioning device for machining balance gear - Google Patents
Cylinder connecting part structure of clamping and tensioning device for machining balance gear Download PDFInfo
- Publication number
- CN211589330U CN211589330U CN201922352233.9U CN201922352233U CN211589330U CN 211589330 U CN211589330 U CN 211589330U CN 201922352233 U CN201922352233 U CN 201922352233U CN 211589330 U CN211589330 U CN 211589330U
- Authority
- CN
- China
- Prior art keywords
- holes
- cylinder
- mounting
- plate
- strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Jigs For Machine Tools (AREA)
Abstract
The utility model discloses a cylinder connecting part structure of a clamping and tensioning device for processing a balance gear, which comprises a circular mounting plate fixed below a supporting plate and a circular connecting plate connected and fixed at the front end of a cylinder body of the cylinder; the middle parts of the connecting plate and the mounting plate are respectively provided with a first through hole and a second through hole for the piston rod end of the air cylinder to vertically pass through; a plurality of vertical holes are distributed on the connecting plate in a circular array, strip-shaped holes are respectively arranged on the mounting plate corresponding to the vertical holes, and the length direction of the strip-shaped holes is arranged along the diameter direction of the mounting plate; connecting blocks which can slide along the length direction of the strip holes are respectively arranged on the mounting plates through mounting structures and are opposite to the strip holes, and the whole connecting blocks are of a long strip structure and are arranged along the length direction of the strip holes; a threaded connecting hole is formed in the connecting block corresponding to the vertical hole; the utility model has the advantages of can more conveniently change the installation to the cylinder of different diameters, facilitate the use more.
Description
Technical Field
The utility model belongs to the technical field of gear machining, concretely relates to clamping straining device's cylinder coupling part structure is used in balanced gear processing.
Background
The balance gear (balance teeth in fig. 10) machining process includes the step of drilling holes in the end face, typically six or eight holes distributed along a circular array. When drilling, the balance gear needs to be clamped and then drilling is carried out. However, in the existing clamping device, the balance teeth are usually placed on the corresponding supporting columns, then the clamping force is applied to the balance gear from top to bottom, a corresponding structure for preventing the gear from horizontally rotating is arranged between the balance gear and the supporting columns, and the structure for preventing the gear from horizontally rotating is usually matched and positioned by the positioning pins and the positioning pin holes on the end faces of the gear. The clamping device of the above kind has the following problems: 1, clamping force is applied from top to bottom, and the corresponding clamping mechanism occupies the space at the upper end of the gear, so that holes which are required to be drilled on the end face of the gear, particularly holes which are large in number and uniformly distributed in a circular shape, are formed, paths required by drilling tools to walk are increased, and the drilling efficiency is reduced; meanwhile, if the machining center is adopted for programming, programming is more complicated; 2 prevent that gear horizontal rotation's structure from setting up reasonable inadequately, set up the locating pin hole at the gear terminal surface, can make the intensity reduction of gear to still increased one process, can reduction in production cost.
Therefore, the clamping and tensioning device for machining the balance gear comprises a base, wherein the base comprises a horizontal supporting plate at the upper end, a supporting column which is vertically and upwards arranged is fixed on the supporting plate through a connecting structure, and the upper end of the supporting column is a supporting end surface and is used for being attached to and supported by the lower end surface of the gear to be drilled; a gear rotation positioning structure is arranged between the support column and the gear to limit the horizontal rotation of the gear; the gear transmission mechanism is characterized in that a vertical through hole is formed in the supporting column, a tensioning shaft is vertically arranged in the through hole, and the upper end of the tensioning shaft extends upwards to the position above the upper end face of the supporting column and forms a connecting end which is used for being matched with a central hole of the gear in an inserting manner; and a telescopic mechanism is arranged below the supporting plate corresponding to the supporting column and comprises a vertical upward telescopic working end, and the telescopic working end upwards penetrates through a yielding hole formed in the supporting plate and is connected with the lower end of the tensioning shaft.
In practical use, however, the telescopic mechanism usually adopts an air cylinder, and important factors for the tensioning quality of the gear clamping depend on the magnitude of the tension force which can be provided by the air cylinder, so that the tension force required in gear machining of different magnitudes is different. This requires replacement of the cylinder as required to enable it to provide the appropriate pulling force. After the air cylinder is replaced, the diameter of the corresponding air cylinder is changed.
Therefore, how to provide a cylinder connecting part structure which can more conveniently replace and install cylinders with different diameters and is more convenient to use for machining the balance gear, and the cylinder connecting part structure becomes a technical problem to be further solved by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide one kind can be more convenient to change the installation to the cylinder of different diameters, the balanced gear processing that facilitates use more is with clamping straining device's cylinder connection part structure.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a cylinder connecting part structure of a clamping and tensioning device for machining a balance gear comprises a circular mounting plate fixed below a support plate and a circular connecting plate fixedly connected to the front end of a cylinder body of a cylinder; the middle parts of the connecting plate and the mounting plate are respectively provided with a first through hole and a second through hole for the piston rod end of the air cylinder to vertically pass through; a plurality of vertical holes are distributed on the connecting plate in a circular array, strip-shaped holes are respectively arranged on the mounting plate corresponding to the vertical holes, and the length direction of the strip-shaped holes is arranged along the diameter direction of the mounting plate; connecting blocks which can slide along the length direction of the strip holes are respectively arranged on the mounting plates through mounting structures and are opposite to the strip holes, and the whole connecting blocks are of a long strip structure and are arranged along the length direction of the strip holes; threaded connection holes are formed in the connecting blocks corresponding to the vertical holes, connecting screws which are arranged upwards are arranged in the vertical holes, and the upper ends of the connecting screws are connected in the threaded connection holes in a threaded mode after penetrating through the strip holes.
Therefore, when the cylinder connecting part structure is used and when cylinders with different sizes need to be replaced to improve clamping and tensioning quality, the threaded connecting holes in the connecting blocks are enabled to integrally move towards the center of the mounting plate or far away from the center of the mounting plate by sliding the connecting blocks along the length direction of the strip holes, and the threaded connecting holes are enabled to be located in the corresponding areas of the strip holes; the circumference corresponding to each threaded connecting hole is enlarged or reduced, so that the mounting connection with cylinders with different cylinder body diameters can be better completed. The structure has the advantages of simple structure, convenient use and more convenient installation and connection with different cylinders. And the threaded connection hole site sets up on the connecting block, and when the threaded connection hole site on the connecting block used repeatedly suffered to destroy, can be through changing the connecting block in order to reach the purpose of change maintenance, reduce use cost.
As an optimization, mounting structure includes the mounting groove that sets up along rectangular hole length direction on the mounting panel upper surface, the connecting block sets up in the mounting groove, and make the connecting block upper surface be located mounting panel upper surface below.
Like this, mounting structure is simpler, and the rectangular hole corresponds the setting on the mounting groove bottom surface, can more conveniently process and obtain the rectangular hole. And the mounting groove can lead the connecting block, and is more convenient to slide the connecting block along the length direction of the strip hole.
Preferably, the length of the connecting block is greater than that of the mounting groove, so that a force end is formed after one end of the connecting block exceeds the mounting groove.
Therefore, the connecting block is more convenient to use, and the connecting block can be moved by operating the force applying end formed at the outer end of the connecting block during use.
Preferably, a plurality of threaded connecting holes are arranged on the connecting block at intervals along the length direction of the connecting block.
Like this, be spaced through being equipped with a plurality of threaded connection holes along its length direction on the connecting block, can conveniently match the fixed various cylinders of installation more, design more rationally.
Preferably, the supporting plate and the mounting plate are connected together through screws.
Like this, link together through the screw between backup pad and the mounting panel, simple structure makes things convenient for the dismouting more.
Preferably, the number of the vertical holes on the connecting plate is four, and the vertical holes are uniformly distributed along the circumferential direction.
Thus, the design is more reasonable, and the stress is more uniform.
Drawings
Fig. 1 is a front view structure diagram of a clamping tensioning device for machining a balance gear, which uses the structure of the utility model.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a partially enlarged view of a position D in fig. 1.
Figure 4 is a top view of the support post of figure 1.
Fig. 5 is a cross-sectional view of fig. 4.
Fig. 6 is a partial cross-sectional view taken at position a in fig. 4.
FIG. 7 is a top view of the mounting plate of FIG. 1 (with a connector block matingly disposed within the mounting slot).
Fig. 8 is a sectional view taken along line a-a of fig. 7.
Fig. 9 is a cross-sectional view taken along line C-C of fig. 7.
Fig. 10 is a top view of a balance tooth.
Detailed Description
The utility model discloses the clamping tensioning device is used in balanced gear processing of structure's the accompanying drawing and the embodiment of following combination are right the utility model discloses do further explanation:
see fig. 1 to 9 for: a clamping and tensioning device for machining a balance gear comprises a base 1, wherein the base comprises a horizontal supporting plate 2 at the upper end, a supporting column 3 which is vertically and upwardly arranged is fixed on the supporting plate through a connecting structure, and the upper end of the supporting column is a supporting end surface and is used for being attached to and supported by the lower end surface of a gear to be drilled; a gear rotation positioning structure is arranged between the support column and the gear to limit the horizontal rotation of the gear; the supporting column is provided with a vertical through hole, a tensioning shaft 4 which is vertically arranged is arranged in the through hole, and the upper end of the tensioning shaft extends upwards to the upper end face of the supporting column and forms a connecting end which is used for being matched with a central hole of the gear in an inserting manner; and be equipped with telescopic machanism corresponding to the support column in backup pad below, telescopic machanism includes vertical ascending flexible work end, just flexible work end upwards passes the hole of stepping down that is equipped with in the backup pad and with 4 lower extremes of tight axle that rise are connected.
Therefore, when the clamping and tensioning device is used, the tensioning shaft is inserted and matched in the central hole of the gear, the lower end face of the gear is attached to the supporting end face at the upper end of the supporting column for supporting, and the gear is limited to horizontally rotate after the gear rotation positioning structure is matched with the gear. And then, the tension shaft works to enable the connecting end of the tension shaft to be in tension fit with the central hole of the gear, and then the telescopic mechanism pulls the tension shaft and the gear on the tension shaft to vertically move downwards, so that the lower end face of the gear is tightly attached to the supporting end face, the rotation of the gear in the horizontal direction, the movement of the gear in the vertical direction and the movement of the gear in the horizontal direction are limited, and the clamping and tensioning of the gear are completed. The device structure can not shade the upper end surface of the gear from growing, can more conveniently perform drilling operation, and can reduce the moving path of the cutter during machining, thereby improving the machining efficiency. And because the upper part of the device can not be shielded, the required program is simpler and more convenient to use when the numerical control machining center is adopted for programming. Wherein, the tensioning shaft adopts the tensioning shaft of the existing structure and can be a pneumatic tensioning shaft.
In this embodiment, the supporting plate 2 is a rectangular plate structure, and the supporting posts 3 are respectively disposed at four corner positions of the upper surface of the supporting plate.
Like this, the whole set of device once can carry out the clamping tensioning to four gears, can effectual improvement clamping efficiency and machining efficiency.
In the specific embodiment, the supporting column 3 comprises a fixing plate 5 with a lower end in a horizontal and rectangular structure, a vertical slot 6 is arranged on one side surface of the fixing plate, a plug pin arranged vertically upwards is arranged on the supporting plate, and the upper end of the plug pin is inserted and matched in the slot; and the connecting structure is arranged between the fixing plate and the supporting plate.
Like this, through setting up the fixed plate, the fixed plate sets up the slot, and when can easy to assemble, place the support column in the position that corresponds in the backup pad better. The assembly of the whole device is more convenient.
In this embodiment, the supporting column 3 and the fixing plate 5 are integrally formed.
Like this, make things convenient for processing and manufacturing more to both integrated into one piece can reduce assembly error, improve the precision.
In this specific embodiment, the connection structure includes a first connection hole 7 vertically penetrating through the fixing plate at four corner positions of the fixing plate 5, a first threaded hole vertically penetrating through the fixing plate is respectively formed in the supporting plate 2 corresponding to the first connection hole, a first screw vertically and downwardly arranged is arranged in the first connection hole, and a lower end of the first screw is in threaded connection with the first threaded hole and fixedly connects the supporting plate and the fixing plate together.
Like this, connection structure is simpler, and connects more reliably, can also make things convenient for the dismouting.
In this embodiment, the edge of the upper end of the supporting column 3 is provided with a circle of supporting protrusions 8 protruding upwards, and the upper end faces of the supporting protrusions form the supporting end face.
Therefore, the supporting plane is converted from the large end face into the annular supporting face with the smaller area, the processing precision can be controlled more favorably, and the processing cost is reduced.
In this embodiment, two chip removal notches 9 are uniformly arranged on the supporting protrusion 8 along the circumferential direction.
Like this, through setting up the chip removal mouth, can make things convenient for the iron fillings clearance that will process the production more, have the advantage that facilitates the use more.
In this embodiment, the gear rotation positioning structure includes a positioning pin 10 disposed on the support end face in an upward inclined manner, and the positioning pin can be inserted into and fitted in the helical teeth of the gear to limit the horizontal rotation of the gear.
Like this, through setting up the locating pin, and fix a position between two skewed teeth that locating pin and gear self have, need not extra processing and locating pin complex structure, can have simple structure, reduce the advantage of processing step. The integrity of the gear can be better ensured, and the strength of the gear can be better ensured.
In this embodiment, an inclined positioning pin mounting hole is formed in the supporting end surface, and the lower end of the positioning pin 10 is inserted into the positioning pin mounting hole.
Therefore, the positioning pin can be conveniently installed and fixed.
In this embodiment, the base includes bottom plate 11 that the level of lower extreme set up, corresponds backup pad both sides edge on the bottom plate and is equipped with riser 12, and the upper end butt of riser is supported at the backup pad lower surface, and all through vertical screw fixed connection between bottom plate and the riser and between backup pad and the riser.
Like this, the structure of whole base is simpler, and the design is more reasonable.
In this embodiment, the telescopic mechanism is a cylinder 13.
Thus, the structure is simpler, and the air cylinder has the advantage of reliable operation.
In the specific embodiment, the front end of the cylinder body is connected with the supporting plate through the cylinder connecting part structure.
Therefore, the front end of the cylinder body of the cylinder is connected with the supporting plate through a cylinder connecting part structure, and is usually directly connected and fixed through a bolt.
In practical use, however, the important factor of the quality of the gear clamping tension depends on the magnitude of the tension which can be provided by the air cylinder, so that the tension required in gear machining with different magnitudes is different. Therefore, the cylinder needs to be replaced as needed so that it can provide an appropriate pulling force. After the cylinder is changed, the diameter of the corresponding cylinder body of the cylinder is changed, and the problem to be solved is solved by how to conveniently installing and fixing the cylinder after the cylinder is changed.
In the present embodiment, the cylinder connection part structure includes a circular connection plate 21 and a mounting plate 22; the connecting plate is fixed at the front end of the cylinder body of the air cylinder, the mounting plate is fixed on the lower surface of the supporting plate, and the middle parts of the connecting plate and the mounting plate are respectively provided with a first through hole and a second through hole for the piston rod end of the air cylinder to vertically pass through; a plurality of vertical holes are distributed on the connecting plate in a circular array, strip-shaped holes 23 are respectively arranged on the mounting plate corresponding to the vertical holes, and the length direction of the strip-shaped holes is arranged along the diameter direction of the mounting plate; the mounting plates are respectively provided with connecting blocks 24 which are opposite to the strip holes through mounting structures and can slide along the length direction of the strip holes, and the connecting blocks are integrally in a long strip-shaped structure and are arranged along the length direction of the strip holes; and a threaded connecting hole 25 is formed in the connecting block 24 corresponding to the vertical hole, an upward connecting screw 26 is arranged in the vertical hole, and the upper end of the connecting screw penetrates through the strip hole and is in threaded connection with the threaded connecting hole.
Therefore, when the cylinder connecting part structure is used and when cylinders with different sizes need to be replaced to improve clamping and tensioning quality, the threaded connecting holes in the connecting blocks are enabled to integrally move towards the center of the mounting plate or far away from the center of the mounting plate by sliding the connecting blocks along the length direction of the strip holes, and the threaded connecting holes are enabled to be located in the corresponding areas of the strip holes; the circumference corresponding to each threaded connecting hole is enlarged or reduced, so that the mounting connection with cylinders with different cylinder body diameters can be better completed. The structure has the advantages of simple structure, convenient use and more convenient installation and connection with different cylinders. And the threaded connection hole site sets up on the connecting block, and when the threaded connection hole site on the connecting block used repeatedly suffered to destroy, can be through changing the connecting block in order to reach the purpose of change maintenance, reduce use cost.
In this particular embodiment, the mounting structure includes a mounting groove 27 on the mounting plate upper surface that is disposed along the length direction of the elongated hole, the connecting block is disposed in the mounting groove, and the connecting block upper surface is located below the mounting plate upper surface.
Like this, mounting structure is simpler, and the rectangular hole corresponds the setting on the mounting groove bottom surface, can more conveniently process and obtain the rectangular hole. And the mounting groove can lead the connecting block, and is more convenient to slide the connecting block along the length direction of the strip hole.
In this embodiment, the length of the connecting block 24 is greater than the length of the mounting groove so that one end of the connecting block extends beyond the mounting groove to form a force end.
Therefore, the connecting block is more convenient to use, and the connecting block can be moved by operating the force applying end formed at the outer end of the connecting block during use.
In this embodiment, a plurality of screw coupling holes are provided at intervals in the connecting block 24 in the longitudinal direction thereof.
Like this, be spaced through being equipped with a plurality of threaded connection holes along its length direction on the connecting block, can conveniently match the fixed various cylinders of installation more, design more rationally.
In the present embodiment, the support plate 2 and the mounting plate 22 are connected together by screws.
Like this, link together through the screw between backup pad and the mounting panel, simple structure makes things convenient for the dismouting more.
In this embodiment, four vertical holes are uniformly distributed in the circumferential direction on the connecting plate 21.
Thus, the design is more reasonable, and the stress is more uniform.
During concrete implementation, can also set up the direction spout on mounting groove both sides wall, correspond in the connecting block both sides the direction spout sets up direction arch and slidable and pegs graft the cooperation and be in the direction spout, make whole guide structure more reliable like this, and can set up the connecting block installation in the mounting groove better. (the guide runner and guide boss structure is not shown in the figures).
When the threaded connection structure is specifically implemented, a vertical stepped hole with a large upper end diameter and a small lower end diameter is formed in the connecting block, a vertical connection nut is arranged at the large end of the stepped hole, and the connection nut forms the threaded connection hole. Like this, can protect the connecting block better, it is more reasonable to design, through changing coupling nut in order to reach the purpose of changing threaded connection hole. (the coupling nut is not shown in the figure).
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. A cylinder connecting part structure of a clamping and tensioning device for machining a balance gear comprises a circular mounting plate (22) fixed below a supporting plate and a circular connecting plate (21) fixedly connected to the front end of a cylinder body of a cylinder; the middle parts of the connecting plate and the mounting plate are respectively provided with a first through hole and a second through hole for the piston rod end of the air cylinder to vertically pass through; the connecting plate is characterized in that a plurality of vertical holes are distributed on the connecting plate in a circular array, strip holes (23) are respectively arranged on the mounting plate corresponding to the vertical holes, and the length direction of the strip holes is arranged along the diameter direction of the mounting plate; connecting blocks (24) which can slide along the length direction of the strip holes are respectively arranged on the mounting plates through mounting structures and are opposite to the strip holes, and the whole connecting blocks are of long strip structures and are arranged along the length direction of the strip holes; threaded connection holes (25) are formed in the connecting blocks (24) corresponding to the vertical holes, connecting screws (26) which are arranged upwards are arranged in the vertical holes, and the upper ends of the connecting screws penetrate through the strip holes and are in threaded connection with the threaded connection holes.
2. The cylinder connecting part structure of the clamping and tensioning device for machining the balance gear as claimed in claim 1, wherein: mounting structure includes mounting groove (27) that the edge rectangular hole length direction set up on the mounting panel upper surface, the connecting block sets up in the mounting groove, and makes the connecting block upper surface be located mounting panel upper surface below.
3. The cylinder connecting part structure of the clamping and tensioning device for machining the balance gear as claimed in claim 2, wherein: the length of the connecting block (24) is larger than that of the mounting groove, so that a force end is formed after one end of the connecting block exceeds the mounting groove.
4. The cylinder connecting part structure of the clamping and tensioning device for machining the balance gear as claimed in claim 1, wherein: a plurality of threaded connection holes are arranged on the connecting block (24) at intervals along the length direction of the connecting block.
5. The cylinder connecting part structure of the clamping and tensioning device for machining the balance gear as claimed in claim 1, wherein: the supporting plate (2) and the mounting plate (22) are connected together through screws.
6. The cylinder connecting part structure of the clamping and tensioning device for machining the balance gear as claimed in claim 1, wherein: the vertical holes on the connecting plate (21) are four and are uniformly distributed along the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922352233.9U CN211589330U (en) | 2019-12-24 | 2019-12-24 | Cylinder connecting part structure of clamping and tensioning device for machining balance gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922352233.9U CN211589330U (en) | 2019-12-24 | 2019-12-24 | Cylinder connecting part structure of clamping and tensioning device for machining balance gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211589330U true CN211589330U (en) | 2020-09-29 |
Family
ID=72595122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922352233.9U Active CN211589330U (en) | 2019-12-24 | 2019-12-24 | Cylinder connecting part structure of clamping and tensioning device for machining balance gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211589330U (en) |
-
2019
- 2019-12-24 CN CN201922352233.9U patent/CN211589330U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107097086A (en) | Force feedback type cylindrical shape thin-wall member processing support device | |
| CN208866455U (en) | The fixed bracket of automatic drilling machine | |
| CN208788375U (en) | A kind of novel support sired results dress | |
| CN211589331U (en) | Clamping and tensioning device for machining balance gear | |
| CN211589330U (en) | Cylinder connecting part structure of clamping and tensioning device for machining balance gear | |
| CN117226142B (en) | Major diameter shield body processing equipment | |
| CN109277830B (en) | Three-hole processing equipment and processing technology for rotating shuttle tower of oilless wear-resistant sewing machine | |
| CN208342569U (en) | Radiusing machine clamping device | |
| CN108817457B (en) | A kind of Big Diameter Flange drilling equipment | |
| CN1042372C (en) | Method for using a thimble of a pressurised water nulear reactor and device for adjusting the axial position of the thimble | |
| CN108982009A (en) | A kind of pressure gauge quick coupling and its detection device | |
| CN111014836B (en) | Turbine gland sealing ring gear repairing machine | |
| CN103950013B (en) | Threaded fastening device | |
| CN206872398U (en) | A kind of Weighing type bulking protects bottle adjusting means | |
| CN219767416U (en) | Special fixture for numerical control part machining | |
| CN219391043U (en) | Foundation pit dewatering monitoring device | |
| CN219212836U (en) | Mechanical equipment internal stay anchor clamps | |
| CN221231722U (en) | Quick-change clamp for cycloidal gear hobbing | |
| CN205237241U (en) | Process anchor clamps of large -scale worm wheel part | |
| CN219152747U (en) | Connecting shaft chest expander for maintaining thick grille | |
| CN110450976B (en) | Unmanned aerial vehicle calibration tool | |
| CN205111183U (en) | Can realize that guide rail welds straightness's that hangs down regulation frock structure | |
| CN219568212U (en) | Circular knitting machine capable of producing fabrics with different sizes | |
| CN208858313U (en) | Pumping unit head sheave adjusts centralising device | |
| CN210394725U (en) | Adjusting device of hosiery machine needle selector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |