CN218436192U - Device for adjusting tension of cloth cover - Google Patents
Device for adjusting tension of cloth cover Download PDFInfo
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- CN218436192U CN218436192U CN202220180784.0U CN202220180784U CN218436192U CN 218436192 U CN218436192 U CN 218436192U CN 202220180784 U CN202220180784 U CN 202220180784U CN 218436192 U CN218436192 U CN 218436192U
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Abstract
The utility model discloses a be used for adjusting tensile device of cloth cover, including tabouret, be used for fixed embroidery cloth's embroidery cloth anchor clamps and controller, be provided with tension adjustment mechanism between tabouret and embroidery cloth anchor clamps, tension adjustment mechanism is including fixing the positioner on the tabouret, fixing the fixing base on the positioner and setting up the force sensor between positioner and fixing base, the embroidery cloth anchor clamps include the drive arrangement that clamping base, splint and drive splint removed. The utility model provides a cloth cover tension adjusting device, the embroidery clamping is firm, be convenient for adjust embroidery cloth tension in real time in the embroidery engineering, accurate control embroidery cloth tension, assurance embroidery effect.
Description
Technical Field
The utility model belongs to the technical field of the embroidery machine technique and specifically relates to a be used for adjusting tensile device of cloth cover.
Background
When the embroidery machine works, embroidery cloth needs to be fixed on two sides, the tension of the embroidery cloth cannot be too large or too small, the embroidery machine can press the embroidery cloth in the process of embroidering the embroidery cloth, the embroidery cloth at the embroidery position can be shrunk after the embroidery of the embroidery cloth is finished, and therefore the embroidery is not attractive easily, and most of the existing embroidery machines can influence the embroidery effect because the embroidery cloth is fixed and the tension of the embroidery cloth in the embroidery process is difficult to adjust.
For example, in the "embroidery machine embroidery thread tension adjusting mechanism" disclosed in the chinese patent document, the publication number CN211921876U shows that a mounting groove is formed on one side of the base; a screw rod and a screw rod are arranged in the mounting groove; one end surface of the base is provided with a motor; a first clamping plate is fixed on one side of the mounting groove; the upper surface of the first clamping plate is provided with a first mounting frame; a first pressure plate is arranged on the lower surface of the first mounting frame; the motor drives the second clamping plate to slide left and right along the mounting groove; the upper surface of the second clamping plate is provided with a second mounting frame; the lower surface of the second mounting frame is provided with a second pressure plate. The utility model adjusts the space between the two clamping plates by arranging the motor and the lead screw structure to be matched with each other to drive the second clamping plate to slide left and right, and fixes the embroidery cloth by matching the clamping plates with the clamping plates; however, the technical scheme in the patent is only to adjust the tension of the embroidery cloth before embroidering, but the tension of the embroidery cloth can not be adjusted during embroidering, which causes the embroidery cloth to be tight at the embroidery position and affects the embroidering effect.
Disclosure of Invention
The utility model relates to an overcome among the above-mentioned prior art embroidery machine be difficult to adjust embroidery cloth tension at the embroidery in-process, influence embroidery effect scheduling problem, provide one kind and be used for adjusting the tensile device of cloth cover, the embroidery clamping is firm, be convenient for adjust embroidery cloth tension in real time in the embroidery engineering, accurate control embroidery cloth tension, assurance embroidery effect.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a device for adjusting cloth cover tension comprises an tabouret, an embroidery cloth clamp used for fixing embroidery cloth and a controller, wherein a tension adjusting mechanism is arranged between the tabouret and the embroidery cloth clamp, the tension adjusting mechanism comprises a position adjusting device fixed on the tabouret, a fixed seat fixed on the adjusting device and a tension sensor arranged between the position adjusting device and the fixed seat, and the embroidery cloth clamp comprises a clamping base, a clamping plate and a driving device driving the clamping plate to move.
In the technical scheme, an embroidery frame drives an embroidery cloth and an embroidery clamp to move according to an embroidery pattern in an embroidery process, the embroidery clamp is used for clamping the embroidery cloth, a certain pressure is generated on the embroidery cloth by an embroidery machine in the embroidery process, the embroidery cloth tension changes at the moment, namely, the embroidery cloth generates a certain pulling force on the embroidery clamp, when the embroidery clamp is under the action of the pulling force, a pulling force sensor receives the pulling force and measures the pulling force value, then the pulling force signal is transmitted to a controller, the controller controls a positioning device to adjust the position of the embroidery clamp, namely, the distance between two sides of the embroidery cloth is adjusted, the tension of the embroidery cloth is adjusted in real time, the embroidery cloth tension is accurately controlled, the phenomenon that the embroidery effect is influenced by the fact that the embroidery cloth is tightly stretched at an embroidery position after the embroidery is finished is avoided, in addition, the embroidery clamp is matched with a clamping base and a clamping plate to clamp the embroidery cloth, and a driving device is used for controlling the position of the clamping plate, and inconvenience caused by the fact that the clamping plate moves is avoided.
Preferably, the position adjusting device comprises a screw rod adjusting mechanism and a connecting block, the connecting block is used for connecting the screw rod adjusting mechanism and the tension sensor, and the screw rod adjusting mechanism comprises a driving motor and a screw rod. The position adjusting device controls the position of the embroidery cloth clamp through the lead screw adjusting mechanism, the lead screw adjusting mechanism can stably drive the lead screw to move, the moving distance of the lead screw is accurately controlled, and then the embroidery cloth tension is accurately controlled.
Preferably, the connecting block comprises a connecting plate, the connecting plate is of a Z-shaped structure, one side of the connecting plate is connected with the screw rod, the other side of the connecting plate is connected with the tension sensor, a through hole is formed in the joint of the connecting plate and the screw rod, and a nut is arranged in the through hole.
The connecting plate sets up to the zigzag structure, is convenient for install lead screw and force sensor in the different positions, and the lead screw that is convenient for of setting up of nut promotes the connecting plate and removes.
Preferably, the connecting block further comprises a sliding plate, a sliding rail is further arranged on the position adjusting device, the sliding rail is parallel to the screw rod, and the sliding plate is arranged on the sliding rail in a sliding mode.
The slide rail and the slide block are arranged to be beneficial to ensuring the stability of the tension sensor, the connecting block is also prevented from rotating under the driving of the screw rod to influence the tension detection effect of the tension sensor, and the precision of the tension adjusting mechanism is improved.
Preferably, two ends of the embroidery cloth clamp are provided with sliding mechanisms, and the embroidery cloth clamp is arranged on the embroidery frame in a sliding manner through the sliding mechanisms.
The arrangement of the sliding mechanism limits the moving direction of the embroidery cloth clamp, so that the embroidery cloth clamp moves at the specific position of the embroidery frame.
Preferably, the clamping base is provided with a clamping groove, the clamping plate is arranged on the clamping groove, the clamping plate is provided with a pressing mechanism, and the pressing mechanism is matched with the clamping groove.
The pressing mechanism is matched with the clamping groove to clamp the embroidery cloth, so that the embroidery cloth is prevented from moving in the embroidering process.
As preferred, pressing mechanism is including the pressfitting board that sets up in pairs, pivot, be used for connecting the rotation limiting plate of pivot and splint, and mated pressfitting board rotates through the pivot to be connected, and the pivot rotates and sets up in rotating the limiting plate, is provided with the gasbag that is used for controlling the pressfitting board lower extreme to open and shut between mated pressfitting board, the gasbag sets up in the pivot top.
The pressfitting board is fixed with the embroidery cloth through the lateral wall butt with the clamping groove, and pressing means sets up mated pressfitting board, and this just makes the embroidery cloth clamping firm on the embroidery cloth anchor clamps, and when the gasbag was bloated big, the lower extreme of two pressfitting boards was close to each other, was convenient for pull out the pressfitting board from the clamping groove, and when the gasbag shrink, the lower extreme of pressfitting board was kept away from each other and was hugged closely each other and then press from both sides tight embroidery cloth with the clamping groove.
Preferably, the clamping groove is of a dovetail structure with a small upper part and a large lower part, and the clamping groove is internally provided with the anti-skidding teeth.
The anti-skidding teeth are arranged to facilitate the improvement of the clamping force between the clamping groove and the pressing plate, and the clamping firmness of the embroidery cloth is further improved.
Preferably, the driving device is a lifting driving mechanism, the lifting driving mechanism comprises a lifting plate and a lifting cylinder, one end of the lifting plate is fixed on the lifting cylinder, and the other end of the lifting plate is fixed on the clamping plate.
The lifting driving mechanism is simple in structure, the clamping plates are convenient to control to lift, the positions of the clamping plates above the clamping grooves are always guaranteed, and the clamping plates are prevented from being adjusted before embroidery cloth clamping to affect the efficiency.
Therefore, the utility model discloses following beneficial effect has: the embroidery cloth clamping is firm, the real-time embroidery cloth tension adjustment in the embroidery engineering is convenient, the embroidery cloth tension is accurately controlled, the embroidery precision is high, and the embroidery effect is favorably ensured.
Drawings
Fig. 1 is a first structural schematic diagram of a device for adjusting cloth cover tension of the present invention;
FIG. 2 is a schematic view of a first structure of the cloth cover tension adjusting device;
FIG. 3 is a schematic view of the tension adjustment mechanism;
FIG. 4 is a schematic view of a second structure of the cloth cover tension adjusting device
FIG. 5 is a schematic view of a second structure of the cloth cover tension adjusting device;
in the figure: 1. the embroidery frame 2, the embroidery clamp 21, the clamping base 211, the clamping groove 212, the clamping convex edge 22, the clamping plate 221, the pressing groove 222, the pressing mechanism 2221, the pressing plate 2222, the rotation limiting plate 2223, the air bag 23, the lifting driving mechanism 231, the lifting plate 232, the lifting cylinder 24, the rotation driving mechanism 241, the rotating shaft 242, the rotating plate 243, the rotation mounting base 244, the rotating motor 3, the sliding mechanism 31, the sliding block 32, the pulley 33, the acceleration sensor 4, the tension adjusting mechanism 411, the screw rod 412, the driving motor 413, the connecting block 414, the sliding block 415, the slide rail 42, the fixed base 43 and the tension sensor.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Example 1:
the present invention will be further described with reference to the accompanying drawings and the detailed description.
Example 1: in embodiment 1 shown in fig. 1 and 3, a device for adjusting cloth tension includes an embroidery frame 1, an embroidery clamp 2 and a controller, wherein two ends of the embroidery clamp 2 are slidably disposed on the embroidery frame 1 through a sliding mechanism 3, a tension adjusting mechanism 4 is disposed between the embroidery clamp 2 and the embroidery frame 1, the tension adjusting mechanism 4 includes a positioning device fixed on the embroidery frame 1 and a fixing seat 42 fixed on the adjusting device, a tension sensor 43 is disposed between the positioning device and the fixing seat 42, one side of the embroidery cloth is fixed on the embroidery clamp 2, the embroidery machine generates a certain pressure on the embroidery cloth during the embroidery process, the embroidery cloth tension changes, that is, the embroidery cloth generates a certain pulling force on the embroidery clamp 2, when the embroidery clamp 2 receives the pulling force, the tension sensor 43 receives the pulling force and measures the pulling force value, and transmits a pulling signal to the controller, and the controller controls the positioning device to adjust the position of the embroidery clamp 2, that is, the distance between two sides of the embroidery cloth is adjusted, thereby adjusting the tension of the embroidery cloth and avoiding the embroidery effect being affected by the embroidery tightening at the embroidery place where the embroidery is finished.
The positioning device comprises a screw rod adjusting mechanism and a connecting block 413, the connecting block 413 is used for connecting the screw rod adjusting mechanism and the tension sensor 43, the screw rod adjusting mechanism comprises a driving motor 412 and a screw rod 411, the driving motor 412 is connected with the screw rod 411 through gear transmission, the connecting block 413 comprises a connecting plate, one side of the connecting plate is connected with the screw rod 411, the other side of the connecting plate is connected with the tension sensor 43, a through hole is formed in the connecting position of the connecting plate and the screw rod 411, a nut is fixed in the through hole, in the embodiment, the connecting plate is of a Z-shaped structure, and the screw rod 411 and the tension sensor 43 are prevented from being coaxially arranged through the arrangement.
In addition, still be provided with slide rail 415 on lead screw adjustment mechanism, slide rail 415 is on a parallel with lead screw 411 and sets up, connecting block 413 still includes the slide board, be connected with sliding block 414 at the slide board downside, sliding block 414 passes through the bolt fastening on the slide board, sliding block 414 slides and sets up on slide rail 415, set up the spout on sliding block 414, the spout cover is established outside slide rail 415, slide rail 415 and sliding block 414 be provided with and do benefit to the stability of guaranteeing tension sensor 43, also avoid connecting block 413 to take place to rotate under lead screw 411 drives and influence tension sensor 43's tensile force detection effect, improve tension adjustment mechanism 4's precision. In order to further improve the stability of the connecting block 413, the sliding groove and the sliding rail 415 are both arranged in a T-shaped structure.
In this embodiment, at least two tension adjusting mechanisms 4 are disposed between the tabouret 1 and the embroidery clamp 2, so as to facilitate the stable movement of the embroidery clamp 2, and the tension sensor 43 also performs a detecting function, so as to ensure that the embroidery clamp 2 moves at the same position.
As shown in fig. 2, the embroidery clamp 2 includes a clamping base 21, a clamping plate 22 and a driving device for driving the clamping plate 22 to move, a fixing seat 42 is fixed on one side of the clamping base 21 far away from the embroidery cloth, a clamping groove 211 is arranged on the clamping base 21, the clamping plate 22 is arranged on the clamping groove 211, a pressing groove 221 is arranged on the clamping plate 22, a pressing mechanism 222 for clamping the embroidery cloth is arranged in the pressing groove 221, the pressing mechanism 222 includes pressing plates 2221 arranged in pairs and rotation limiting plates 2222 arranged between the pressing plates 2221, the two pressing plates 2221 are rotatably connected through a rotating shaft, the rotating shaft is fixed on the rotation limiting plates 2222, two ends of the rotation limiting plates 2222 are fixed on the clamping plate 22, the rotation limiting plates 2222 fix the rotating shaft and the clamping plate 22, an air bag 2223 is arranged between the two pressing plates 2221, and the air bag 2223 is fixed above the rotating shaft, therefore when the air bag 2223 is expanded, the lower ends of the two pressing plates 2221 approach each other, when the air bag 2223 is contracted, the lower ends of the pressing plates 2221 are far away from each other and cling to the clamping groove 211 to each other to clamp the embroidery cloth. In addition, be provided with the arc breach at the upside that rotates limiting plate 2222 and be close to gasbag 2223, the arc breach is used for adaptation gasbag 2223, is convenient for carry on spacingly gasbag 2223 position for gasbag 2223 no matter expand or all set up in the arc breach under the shrink state. And wherein glide machanism 3 is including setting up slider 31 and the slide of setting on tabouret 1 at clamping base 21 both ends, is provided with pulley 32 between slider 31 and slide, and the setting of pulley 32 is favorable to reducing frictional force for drive arrangement promotes the tabouret 1 and removes more smoothly.
Clamping base 21 is provided with the tight chimb 212 of clamp near the one side of installation embroidered cloth, presss from both sides tight chimb one side and is used for forming the lateral wall of clamping groove 211, presss from both sides tight chimb 212 simultaneously and has interval H between the splint, and this just makes the embroidered cloth butt respectively press from both sides tight chimb and splint, is convenient for press fitting mechanism with the initial fixation of embroidered cloth before pressing from both sides the tight. The side wall of the clamping groove 211 and the clamping convex edge are provided with anti-slip teeth, and the anti-slip teeth are favorable for improving the clamping firmness of the embroidery cloth.
The clamping grooves 211 are arranged in a dovetail structure with a small upper part and a large lower part, and the pressing plates 2221 are obliquely arranged when the embroidery cloth is clamped, so that the clamping grooves 211 are arranged in the dovetail structure to be beneficial to being matched with the pressing plates 2221. In addition, still be provided with at compressed particleboard 2221's lower extreme and compress tightly the chimb, compress tightly the chimb and set up to cylindric structure, this just guarantees that compressed particleboard 2221 homoenergetic and clamping groove 211 lateral wall laminating under arbitrary angle, guarantees the clamping effect.
In this embodiment, the driving device is configured as a lifting driving mechanism 23, the lifting driving mechanism 23 includes a lifting plate 231 and a lifting cylinder 232, one end of the lifting plate 231 is fixed on the lifting cylinder 232, the other end is fixed on the clamping plate 22, and the lifting of the clamping plate 22 is controlled by the lifting of the lifting cylinder 232.
Example 2:
as shown in fig. 4, the embodiment 2 is basically the same as the embodiment 1, except that: the driving device is set as a rotary driving mechanism 24, the rotary driving mechanism 24 includes a rotary shaft 241, a rotary mounting seat 243 fixed on the clamping plate 22, a rotary plate 242 for connecting the rotary shaft with the rotary mounting seat 243, and a rotary motor 244 for driving the rotary shaft 241 to rotate, when in use, the rotary motor 244 drives the rotary shaft to rotate, and the rotary shaft drives the clamping plate 22 to rotate through the rotary connecting plate, so as to realize the clamping of the embroidery cloth.
Example 3:
as shown in fig. 5, the embodiment 3 is basically the same as the embodiment 1, except that: both sides of the embroidery cloth are clamped on the embroidery cloth clamp 2, a tension adjusting mechanism 4 is arranged between the embroidery cloth clamp 2 and the tabouret 1 on both sides of the embroidery cloth, a sliding mechanism 3 is arranged between both ends of the embroidery cloth clamp 2 and the tabouret 1, a pulley 32 is fixed on a sliding block 31, and an acceleration sensor 33 is arranged on the pulley 32.
In the embroidering process, the embroidering machine is still, the embroidery frame 1 moves according to the embroidering pattern, the embroidery cloth on the embroidery cloth clamp 2 is driven to move together in the moving process of the embroidery frame 1, the embroidery cloth clamp 2 has certain inertia force due to the movement of the embroidery frame 1, the precision of the tension sensor 43 is further influenced, and the acceleration sensor 33 is arranged for adjusting the displacement of the tension self-adjusting device up-positioning device on the embroidery cloth clamp 2 by judging the inertia force.
That is, when embroidering is performed in a state where the embroidery frame 1 is stationary, in order to adjust the tension of the embroidery cloth, the embroidery clamps 2 on both sides of the embroidery cloth are inevitably moved in opposite directions, and the directions of the tension to the embroidery clamps 2 on both sides are also set to be opposite to each other, and when the embroidery frame 1 is moved, since the embroidery frame 1 is moved in different directions, when the moving direction of the embroidery frame 1 is changed, the embroidery clamps 2 generate inertia, and the inertia directions of the embroidery clamps 2 on both sides are identical, so that the inertia direction of the embroidery clamp 2 on one side is identical to the tension, and the inertia direction of the embroidery clamp 2 on one side is opposite to the tension, and the accelerations of the embroidery clamps 2 on both sides are different, and the acceleration sensor 33 transmits an acceleration value to the controller, and the controller controls the adjustment of the position of the clamp 1 by the positioning device according to signals of the acceleration sensor 33 and the tension sensor 43, and further, the embroidery effect is obtained in a case where the inertia does not disappear after the embroidery frame 1 is changed in direction.
Example 4:
example 4 is an application example of a device for adjusting the tension of a cloth cover: when the embroidery machine is used, embroidery cloth is paved above the clamping groove 211, the clamping plate 22 is pressed in through the driving device, the embroidery cloth is preliminarily fixed, the air bag 2223 is contracted, the distance between the lower ends of the two pressing plates 2221 is increased, the embroidery cloth is clamped on the side wall of the clamping groove 211, the position of the embroidery cloth clamp 2 is adjusted to enable the tension of the embroidery cloth to be appropriate, and then the embroidery machine is used for embroidering, in the embroidering process, the embroidery frame 1 moves to enable the position of the embroidery machine on the embroidery cloth to be different, the tension adjusting mechanism 4 and the embroidery cloth clamp 2 move along with the embroidery frame 1, the tension sensor 43 controls the position adjusting device to adjust the position of the embroidery cloth clamp 2 according to the change of the embroidery cloth tension, and then the embroidery cloth tension is adjusted to enable the embroidery cloth to be appropriate, and the embroidery effect is guaranteed.
In this embodiment, both embroidery cloth clamps 2 are installed on both sides of the embroidery cloth, a tension adjusting mechanism 4 is provided between one embroidery cloth clamp 2 and the embroidery frame 1, and the other embroidery cloth clamp 2 is fixed to the embroidery frame 1. Or a tension adjusting mechanism 4 is arranged between the embroidery cloth clamp 2 and the embroidery frame 1 at the two sides.
It should be noted that as used in the foregoing description, the terms "front," "back," "left," "right," "upper" and "lower" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
The above examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. Various other modifications and changes can be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims.
Claims (9)
1. The utility model provides a device for adjusting cloth cover tension, characterized by, includes tabouret (1), is used for fixed embroidery cloth's embroidered cloth anchor clamps (2) and controller tabouret (1) with be provided with tension adjustment mechanism (4) between embroidered cloth anchor clamps (2), tension adjustment mechanism (4) are including fixing positioning device on tabouret (1), fixing base (42) on the positioning device and setting tension sensor (43) between positioning device and fixing base (42), embroidered cloth anchor clamps (2) are including clamping base (21), splint (22) and drive the drive arrangement that splint (22) removed.
2. The device for adjusting the cloth cover tension as recited in claim 1, wherein the positioning device comprises a screw rod adjusting mechanism and a connecting block (413), the connecting block (413) is used for connecting the screw rod adjusting mechanism and the tension sensor (43), and the screw rod adjusting mechanism comprises a driving motor and a screw rod (411).
3. The device for adjusting the cloth cover tension as recited in claim 2, wherein the connecting block (413) comprises a connecting plate, the connecting plate is arranged in a zigzag structure, one side of the connecting plate is connected with the screw rod (411), the other side of the connecting plate is connected with the tension sensor (43), a through hole is arranged at the joint of the connecting plate and the screw rod (411), and a nut is arranged in the through hole.
4. The device for adjusting the cloth cover tension as recited in claim 2, wherein the connecting block further comprises a sliding plate, a sliding rail (415) is further disposed on the position adjusting device, the sliding rail (415) is disposed in parallel with the screw rod (411), and the sliding plate is slidably disposed on the sliding rail.
5. Device for adjusting the cloth cover tension according to claim 1, characterized in that the embroidery clamp (2) is provided with a sliding mechanism at both ends, and the embroidery clamp (2) is slidably arranged on the embroidery frame (1) through the sliding mechanism.
6. The device for adjusting the cloth cover tension according to any one of claims 1-5, characterized in that a clamping groove (211) is arranged on the clamping base (21), a clamping plate is arranged on the clamping groove (211), a pressing mechanism (222) is arranged on the clamping plate, and the pressing mechanism (222) is matched with the clamping groove (211).
7. The device for adjusting the cloth cover tension as recited in claim 6, wherein the pressing mechanism (222) comprises a pair of pressing plates (2221), a rotating shaft, and a rotation limiting plate for connecting the rotating shaft and the clamping plate, the pair of pressing plates (2221) are rotatably connected through the rotating shaft, the rotating shaft is rotatably disposed in the rotation limiting plate, an air bag (2223) for controlling the opening and closing of the lower ends of the pressing plates (2221) is disposed between the pair of pressing plates (2221), and the air bag (2223) is disposed above the rotating shaft.
8. The device for adjusting the cloth cover tension as recited in claim 6, wherein the clamping groove (211) is a dovetail structure with a small top and a big bottom, and anti-slip teeth are arranged in the clamping groove (211).
9. Device for adjusting the tension of a cloth cover according to any one of claims 1 to 5, characterized in that the driving device is configured as a lifting driving mechanism (23), the lifting driving mechanism (23) comprises a lifting plate (231) and a lifting cylinder (232), one end of the lifting plate (231) is fixed on the lifting cylinder (232), and the other end is fixed on the clamping plate (22).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122050342 | 2021-08-27 | ||
| CN2021220503422 | 2021-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218436192U true CN218436192U (en) | 2023-02-03 |
Family
ID=85079035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220180784.0U Active CN218436192U (en) | 2021-08-27 | 2022-01-20 | Device for adjusting tension of cloth cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218436192U (en) |
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2022
- 2022-01-20 CN CN202220180784.0U patent/CN218436192U/en active Active
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