CN113846413A - Automatic dial adjusting device on circular knitting machine - Google Patents
Automatic dial adjusting device on circular knitting machine Download PDFInfo
- Publication number
- CN113846413A CN113846413A CN202111287984.2A CN202111287984A CN113846413A CN 113846413 A CN113846413 A CN 113846413A CN 202111287984 A CN202111287984 A CN 202111287984A CN 113846413 A CN113846413 A CN 113846413A
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- China
- Prior art keywords
- dial
- rod
- adjusting
- circular knitting
- knitting machine
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- 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.)
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Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/18—Dials
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/94—Driving-gear not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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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
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The invention discloses an automatic dial adjusting device on a circular knitting machine, which relates to the technical field of circular knitting machines and comprises the following components: the needle dial comprises a frame, a lower needle dial and an upper needle dial positioned above the lower needle dial are arranged on the frame, at least two lifting adjusting mechanisms are symmetrically arranged on the frame, each lifting adjusting mechanism comprises an adjusting cylinder connected with the frame, an adjusting rod vertically arranged in the adjusting cylinder in a sliding mode and a driving mechanism used for driving the adjusting rod to move up and down, the upper needle dial is connected with the outer end of the adjusting rod, and at least one damping assembly used for preventing the upper needle dial from colliding with the lower needle dial is arranged on the lower needle dial. This application realizes the automatically regulated of going up the dial height through the lift adjustment mechanism who sets up in the frame, and is high-efficient, and convenient operation to set up damper on dial down, damper has multiple cushioning effect, and crashproof is effectual, has avoided going up dial and dial down to produce the striking, safe and reliable in dial height in-process in the regulation.
Description
Technical Field
The invention relates to the technical field of circular knitting machines, in particular to an automatic dial adjusting device for a circular knitting machine.
Background
The circular knitting machine, namely the circular weft knitting machine, because the looping system (called as the number of yarn feeding paths or the number of looping paths in enterprises, called as the number of paths for short) of the circular knitting machine is many, the rotational speed is high, the output is high, the pattern change is fast, the fabric quality is good, the process is few, the product adaptability is strong, so the development is rapid, in the using process of the circular knitting machine, the upper dial needs to be adjusted to change the gap between the upper dial and the lower needle cylinder, the processing of knitting products with different thicknesses is met, the traditional circular knitting machine upper dial adjusting mechanism is complex to operate, the efficient adjustment cannot be realized, and an anti-collision mechanism is not arranged, in the process of adjusting the height of the upper dial, the damage of the dial due to the collision between the upper dial and the lower dial can be caused, the service life is prolonged, and the processing quality of the products is influenced.
Therefore, an automatic dial adjusting device on a circular knitting machine, which is convenient to operate and has a buffering and anti-collision function, is urgently needed.
Disclosure of Invention
In view of the above, the present invention provides an automatic dial adjusting device for a circular knitting machine, so as to solve the above technical problems.
In order to achieve the purpose, the invention provides the following technical scheme:
an automatic dial adjusting device on a circular knitting machine comprises: the needle plate lifting mechanism comprises an adjusting cylinder connected with the frame, an adjusting rod vertically and slidably arranged in the adjusting cylinder and a driving mechanism used for driving the adjusting rod to move up and down, the upper needle plate is connected with the outer end of the adjusting rod, the lower needle plate is provided with at least one damping assembly used for preventing the upper needle plate and the lower needle plate from being impacted, the damping assembly comprises a base arranged at the top end of the upper needle plate, a pressure rod slidably penetrating the top plate of the base and two V-shaped swing rods symmetrically pivoted in the base, the pressure rod can be abutted against the upper needle plate, and the inner end of the pressure rod is provided with a pressure block, and a first compression spring is arranged between one end of the V-shaped oscillating bar and the corresponding side plate of the base, and the other end of the V-shaped oscillating bar is abutted against the pressing block.
Furthermore, the driving mechanism comprises a driving motor installed in the adjusting cylinder, a vertical rod arranged in the adjusting cylinder in a horizontal sliding manner, a lifting plate arranged in the adjusting cylinder in a vertical sliding manner, and a swing rod with one end pivoted on the inner wall of the adjusting cylinder, the driving motor is connected with a take-up pulley in a driving manner, the vertical rod is connected with a pull rope wound on the take-up pulley, a reset spring for pushing the vertical rod to be far away from the take-up pulley is arranged between the vertical rod and the adjusting cylinder, the other end of the swing rod is rotatably connected with a sliding sleeve arranged on the lifting plate in a sliding manner, a guide groove is formed in the swing rod, and a guide pillar arranged at the top end of the vertical rod penetrates through the guide groove.
Further, the briquetting includes interconnect's rake and arc portion, the rake with the depression bar connection, the arc recess has been seted up to the cantilever end of arc portion, the corresponding end of V type pendulum rod with the diapire of arc recess is inconsistent.
Further, the rake is the infundibulate, damper still including setting up just be a plurality of buffer gear that the annular distributes in the base, buffer gear include with the buffer cylinder that the corresponding curb plate of base is connected and with the hole sliding fit's of buffer cylinder push rod, the inner of push rod with be equipped with second compression spring between the diapire of buffer cylinder, the outer end of push rod be equipped with can with the inconsistent gyro wheel in inclined plane of rake.
Furthermore, buffer gear still including set up rack on the push rod, one end pin joint be in second straight-bar and pin joint on the buffer cylinder are in on the base and with the sector gear of rack looks meshing, sector gear and the one end fixed connection of turning lever, the cantilever end of turning lever with through first straight-bar swing joint between the other end of second straight-bar, the second straight-bar with be connected with between the first straight-bar and make the second straight-bar with the extension spring that first straight-bar has variable contained angle.
Furthermore, the outer end of the pressing rod is connected with an arc plate, and the outer arc surface of the arc plate can be abutted to the lower surface of the upper dial.
Furthermore, the number of the shock absorption assemblies is two, and the two shock absorption assemblies are symmetrically distributed.
Furthermore, a T-shaped sliding sleeve is arranged on a top plate of the base, and the pressing rod is in sliding fit with the T-shaped sliding sleeve.
The technical scheme can show that the invention has the advantages that: this application realizes the automatically regulated of going up the dial height through the lift adjustment mechanism who sets up in the frame, and is high-efficient, and convenient operation to set up damper on dial down, damper has multiple cushioning effect, and crashproof is effectual, has avoided going up dial and dial down the production striking in the dial height in-process in the regulation, and safe and reliable has prolonged life, has guaranteed the processingquality of product.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the lift adjustment mechanism of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an enlarged view of a portion of FIG. 1 at B;
FIG. 5 is a schematic view of the shock absorbing assembly of the present invention;
FIG. 6 is an enlarged partial schematic view at C of FIG. 5;
FIG. 7 is an enlarged partial schematic view of FIG. 5 at D;
FIG. 8 is a schematic structural view of a V-shaped swing link according to the present invention.
List of reference numerals: the device comprises a frame 1, a circular ring bottom plate 2, a lower needle disc 3, a mounting groove 31, an upper needle disc 4, a supporting plate 41, a lifting adjusting mechanism 5, an adjusting cylinder 51, a guide rod 511, a sliding groove 512, a driving motor 52, a take-up pulley 521, a pull rope 522, a sliding cylinder 53, a return spring 531, a vertical rod 54, a guide post 541, a swinging rod 55, a guide groove 551, a sliding sleeve 56, a lifting plate 57, an adjusting rod 58, a damping component 6, a base 61, a pressing rod 62, an arc plate 621, a pressing block 63, an inclined part 631, an arc-shaped part 632, an arc-shaped groove 6321, a push rod 64, a roller 641, a rack 642, a sector gear 65, a crank 651, a first straight rod 652, a tension spring 653, a second straight rod 654, a buffer cylinder 66, a second compression spring 661, a V-shaped swinging rod 67 and a first compression spring 68.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides an automatic dial adjusting device for a circular knitting machine, comprising: a frame 1, a lower dial 3 and an upper dial 4 located above the lower dial 3 are arranged on the frame 1, at least two lifting adjusting mechanisms 5 are symmetrically arranged on the frame 1, please refer to fig. 2, the lifting adjusting mechanisms 5 include an adjusting cylinder 51 connected with the frame 1, an adjusting rod 58 vertically slidably arranged in the adjusting cylinder 51 and a driving mechanism for driving the adjusting rod 58 to move up and down, the upper dial 4 is connected with the outer end of the adjusting rod 58, wherein, at least one damping component 6 for preventing the upper dial 4 from colliding with the lower dial 3 is arranged on the lower dial 3, please refer to fig. 4 and 5, the damping component 6 includes a base 61 installed at the top end of the upper dial 4, a pressure rod 62 slidably arranged on the top plate of the base 61 and two V-shaped swing rods 67 symmetrically pivoted in the base 61, the pressing rod 62 can abut against the upper dial 4, a pressing block 63 is arranged at the inner end of the pressing rod 62, referring to fig. 8, a first compression spring 68 is arranged between one end of the V-shaped swing rod 67 and the corresponding side plate of the base 61, and the other end of the V-shaped swing rod 67 abuts against the pressing block 63.
Specifically, the lifting adjusting mechanisms 5 can be two or four, so long as stable adjustment of the height of the upper dial 4 is realized, the supporting plate 41 connected with the corresponding adjusting rod 58 is arranged on the side surface of the upper dial 4, the driving mechanism drives the adjusting rod 58 to move up and down, the adjusting rod 58 moves up and down to drive the supporting plate 41 to move up and down, the upper dial 4 is driven to move up and down, the adjustment of the height of the upper dial 4 (namely the adjustment of the gap between the upper dial and the lower dial 3) is realized, the processing requirements of knitting products with different thicknesses are met, and the operation is convenient, stable and reliable; the lower dial 3 is provided with a circular ring bottom plate 2, and the circular ring bottom plate 2 is fixedly connected with the frame 1; the damping component 6 can be set to be one or two or three, etc., as long as can prevent to go up the dial 4 and produce the striking with lower dial 3, increase of service life can, when reducing the clearance between last dial 4 and the lower dial 3 through adjusting lift adjustment mechanism 5, go up dial 4 downstream, go up dial 4 and support and press depression bar 62, depression bar 62 drives briquetting 63 and moves down, briquetting 63 supports with the corresponding end of two V type pendulum rods 67 and holds, first compression spring 68 is compressed, play the effect of buffering anticollision.
This application is preferred, damper 6's quantity is two, and two damper 6 is the symmetric distribution, and base 61 inlays in establishing the corresponding mounting groove 31 above dial 3 down, makes the structure compacter.
As shown in fig. 2 and 3, the driving mechanism includes a driving motor 52 installed in the adjusting cylinder 51, an upright rod 54 horizontally slidably disposed in the adjusting cylinder 51, a lifting plate 57 vertically slidably disposed in the adjusting cylinder 51, and a swing rod 55 having one end pivotally connected to an inner wall of the adjusting cylinder 51, the driving motor 52 is drivingly connected with a wire winding wheel 521, the upright rod 54 is connected with a pull rope 522 wound on the wire winding wheel 521, a return spring 531 for pushing the upright rod 54 away from the wire winding wheel 521 is disposed between the upright rod 54 and the adjusting cylinder 51, the other end of the swing rod 55 is rotatably connected with a sliding sleeve 56 slidably disposed on the lifting plate 57, the swing rod 55 has a guide slot 551, and a guide post 541 disposed on a top end of the upright rod 54 is inserted into the guide slot 551.
Specifically, a guide rod 511 is arranged in the adjusting cylinder 51, a sliding cylinder 53 is arranged at the bottom end of the vertical rod 54, the sliding cylinder 53 is in sliding fit with the guide rod 511, sliding grooves 512 are formed in the inner walls of the two sides of the adjusting cylinder 51, the two ends of the lifting plate 57 are in sliding connection with the corresponding sliding grooves 512 respectively, when the driving motor 52 works, the wire take-up wheel 521 is driven to rotate, the wire take-up wheel 521 is matched with the reset spring 531, the vertical rod 54 moves to drive the swing rod 55 to swing, the swing rod 55 swings to drive the lifting plate 57 to move up and down, the adjusting rod 58 is driven to move up and down, and the automatic adjustment of the height of the upper dial 4 is realized.
As shown in fig. 4, the outer end of the pressing rod 62 is connected with an arc plate 621, the outer arc surface of the arc plate 621 can be abutted against the lower surface of the upper dial 4, and the arrangement of the arc plate 621 enables the pressing rod 62 to be reliably abutted against the upper dial 4; the top plate of the base 61 is provided with a T-shaped sliding sleeve, the pressing rod 62 is in sliding fit with the T-shaped sliding sleeve, and the T-shaped sliding sleeve plays a role in guiding, so that the pressing rod 62 can move more stably.
As shown in fig. 5 and 7, the pressing block 63 includes an inclined portion 631 and an arc portion 632 that are connected to each other, the inclined portion 631 is connected to the pressing rod 62, an arc groove 6321 is opened at a cantilever end of the arc portion 632, a corresponding end of the V-shaped swing link 67 abuts against a bottom wall of the arc groove 6321, and the V-shaped swing link 67 and the pressing block 63 stably abut against each other through the arc groove 6321, so that stability is improved.
As shown in fig. 5, the inclined portion 631 is funnel-shaped, the damping assembly 6 further includes a plurality of buffering mechanisms disposed in the base 61 and distributed annularly, please refer to fig. 6, the buffering mechanism includes a buffering cylinder 66 connected to a corresponding side plate of the base 61 and a push rod 64 slidably fitted to an inner hole of the buffering cylinder 66, a second compression spring 661 is disposed between an inner end of the push rod 64 and a bottom wall of the buffering cylinder 66, a roller 641 capable of abutting against an inclined surface of the inclined portion 631 is disposed at an outer end of the push rod 64, when the pressing block 63 moves downward by a required distance, the pressing block 63 presses the push rod 64, the push rod 64 moves toward the buffering cylinder 66, and the second compression spring 661 is compressed to perform the buffering and damping functions.
As shown in fig. 6, the buffer mechanism further includes a rack 642 disposed on the push rod 64, a second straight rod 654 pivotally connected to the buffer cylinder 66 at one end, and a sector gear 65 pivotally connected to the base 61 and engaged with the rack 642, the sector gear 65 is fixedly connected to one end of a crank 651, the cantilever end of the crank 651 is movably connected to the other end of the second straight rod 654 through a first straight rod 652, a tension spring 653 is connected between the second straight rod 654 and the first straight rod 652 to make the second straight rod 654 and the first straight rod 652 have a variable included angle, when the push rod 64 moves towards the buffer cylinder 66, the rack 642 is driven to move, the sector gear 65 is driven to rotate by the movement of the rack 642, the crank 651 is driven to swing, the first straight rod 652 and the second straight rod 654 are driven to move by the swing of the crank 651, the included angle between the first straight rod 652 and the second straight rod 654 changes, the extension spring 653 is extended to provide yet another cushioning effect.
This circular knitting machine goes up dial automatic regulating apparatus has realized the automatically regulated to going up 4 high of dial, and is efficient, convenient operation, and this application has effectively avoided producing the striking between last dial 4 and the lower dial 3 when adjusting 4 high of dial, and safe and reliable makes the dial have longer life, and the practicality is good.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An automatic dial adjusting device on a circular knitting machine comprises: frame (1), be provided with down dial (3) and be located on frame (1) last dial (4) of dial (3) top down, its characterized in that, the symmetry is provided with two at least lifting adjusting mechanism (5) on frame (1), lifting adjusting mechanism (5) including with frame (1) connection adjust a section of thick bamboo (51), vertical slip sets up adjust pole (58) in adjusting a section of thick bamboo (51) and be used for the drive adjust the actuating mechanism that pole (58) reciprocated, go up dial (4) with the outer end of adjusting pole (58) is connected, wherein, be provided with at least one on dial (3) down and be used for preventing go up dial (4) with dial (3) produce damping component (6) that strike down, damping component (6) are including installing base (61) on last dial (4) top, The needle dial pressing mechanism comprises a pressing rod (62) arranged on a top plate of a base (61) in a sliding penetrating mode and two V-shaped swing rods (67) symmetrically pivoted in the base (61), the pressing rod (62) can be abutted to an upper needle dial (4), a pressing block (63) is arranged at the inner end of the pressing rod (62), a first compression spring (68) is arranged between one end of each V-shaped swing rod (67) and a corresponding side plate of the base (61), and the other end of each V-shaped swing rod (67) is abutted to the pressing block (63).
2. The automatic dial adjusting device of the circular knitting machine according to claim 1, characterized in that the driving mechanism comprises a driving motor (52) installed in the adjusting cylinder (51), a vertical rod (54) horizontally slidably disposed in the adjusting cylinder (51), a lifting plate (57) vertically slidably disposed in the adjusting cylinder (51), and a swing rod (55) with one end pivotally connected to the inner wall of the adjusting cylinder (51), the driving motor (52) is connected with a take-up pulley (521) in a driving manner, the vertical rod (54) is connected with a pull rope (522) wound on the take-up pulley (521), a return spring (531) for pushing the vertical rod (54) away from the take-up pulley (521) is disposed between the vertical rod (54) and the adjusting cylinder (51), and the other end of the swing rod (55) is rotatably connected with a sliding sleeve (56) slidably disposed on the lifting plate (57), the swing rod (55) is provided with a guide groove (551), and a guide post (541) arranged at the top end of the vertical rod (54) penetrates through the guide groove (551).
3. The automatic dial adjustment device of a circular knitting machine according to claim 1, characterized in that the pressing block (63) comprises an inclined portion (631) and an arc-shaped portion (632) which are connected with each other, the inclined portion (631) is connected with the pressing rod (62), the cantilever end of the arc-shaped portion (632) is provided with an arc-shaped groove (6321), and the corresponding end of the V-shaped swing rod (67) is abutted against the bottom wall of the arc-shaped groove (6321).
4. The automatic dial adjustment device of a circular knitting machine according to claim 3, characterized in that the inclined portion (631) is funnel-shaped, the shock absorbing assembly (6) further comprises a plurality of buffer mechanisms disposed in the base (61) and distributed annularly, the buffer mechanisms comprise buffer cylinders (66) connected with corresponding side plates of the base (61) and push rods (64) slidably fitted with inner holes of the buffer cylinders (66), second compression springs (661) are disposed between inner ends of the push rods (64) and bottom walls of the buffer cylinders (66), and the outer ends of the push rods (64) are provided with rollers (641) capable of abutting against the inclined surface of the inclined portion (631).
5. The automatic dial adjustment device of a circular knitting machine according to claim 4, characterized in that the buffer mechanism further comprises a rack (642) disposed on the push rod (64), a second straight rod (654) having one end pivoted to the buffer cylinder (66), and a sector gear (65) pivoted to the base (61) and engaged with the rack (642), the sector gear (65) is fixedly connected to one end of a crank (651), the cantilever end of the crank (651) is movably connected to the other end of the second straight rod (654) through a first straight rod (652), and a tension spring (653) is connected between the second straight rod (654) and the first straight rod (652) to make the second straight rod (654) and the first straight rod (652) have a variable angle.
6. The automatic dial adjustment device of a circular knitting machine according to claim 1, characterized in that an arc plate (621) is connected to the outer end of the pressure lever (62), and the outer arc surface of the arc plate (621) can be abutted against the lower surface of the upper dial (4).
7. The automatic dial adjustment device on a circular knitting machine according to claim 1, characterized in that the number of said shock-absorbing assemblies (6) is two, and two of said shock-absorbing assemblies (6) are symmetrically distributed.
8. The automatic dial adjustment device of circular knitting machine according to claim 7, characterized in that a T-shaped sliding sleeve is provided on the top plate of the base (61), and the pressure lever (62) is in sliding fit with the T-shaped sliding sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111287984.2A CN113846413B (en) | 2021-11-02 | 2021-11-02 | Automatic adjusting device for upper dial of circular knitting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111287984.2A CN113846413B (en) | 2021-11-02 | 2021-11-02 | Automatic adjusting device for upper dial of circular knitting machine |
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| Publication Number | Publication Date |
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| CN113846413A true CN113846413A (en) | 2021-12-28 |
| CN113846413B CN113846413B (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111287984.2A Active CN113846413B (en) | 2021-11-02 | 2021-11-02 | Automatic adjusting device for upper dial of circular knitting machine |
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| CN115334811A (en) * | 2022-09-23 | 2022-11-11 | 北京普睿融智科技有限公司 | Build quick mounting structure of cold and hot passageway of rack |
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| CN113846413B (en) | 2023-05-02 |
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