Fabric clamping assembly and fabric transfer device
By designing automated fabric clamping components and fabric transfer devices, the problems of low efficiency and poor adaptability of manual fabric alignment are solved. This achieves efficient automated clamping and release of fabric, reduces costs, adapts to fabrics of different thicknesses, and reduces seam start point alignment errors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JACK SEWING MASCH CO LTD
- Filing Date
- 2026-03-26
- Publication Date
- 2026-06-05
AI Technical Summary
In existing technologies, aligning the fabric with the seam start point mainly relies on manual operation, which results in high labor costs and low efficiency. Furthermore, it is difficult to adapt to fabrics of different thicknesses, leading to large errors in seam start point alignment.
A fabric clamping assembly is designed, including a mounting frame, a drive unit, a first gripper, a second gripper, and a return structure. The drive unit drives the grippers to move closer or further apart to clamp or release the fabric, and the return structure removes the fabric when the external force on the grippers disappears. Combined with a fabric transfer device, this improves efficiency and adapts to fabrics of different thicknesses.
It achieves automated fabric clamping and release, reduces labor costs, improves fabric transfer efficiency, reduces seam start point alignment errors, and adapts to fabrics of different thicknesses.
Smart Images
Figure CN122147632A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of sewing technology, and more specifically, to a fabric clamping assembly and a fabric transfer device. Background Technology
[0002] Currently, the alignment of fabric with the seam start point is done manually, which results in high labor costs and low efficiency. Summary of the Invention
[0003] The present invention aims to provide a fabric clamping assembly and a fabric transfer device that can improve the efficiency of fabric transfer, reduce labor costs, adapt to fabrics of different thicknesses, and reduce the alignment error of the seam start point.
[0004] The embodiments of the present invention can be implemented as follows: In a first aspect, the present invention provides a fabric clamping assembly, which includes a mounting frame, a drive unit, a first gripper, a second gripper, and a return structure. The drive unit is connected to the mounting frame; the first gripper and the second gripper are movably connected to the mounting frame along the first preset direction, and the first gripper and the second gripper are connected to the drive unit for transmission. The drive unit is used to drive the first gripper and the second gripper to move closer or further away from each other to clamp or release the fabric. The return structure is connected to the drive unit, the first gripper or the second gripper, and is used to cause at least one of the first gripper and the second gripper to disengage from the fabric when the external force exerted by the drive unit on the first gripper or the second gripper disappears.
[0005] In an optional implementation, the drive unit includes a drive cylinder, a control valve, and a transmission structure. The drive cylinder is connected to the mounting bracket, and the control valve is connected to the drive cylinder; the movable end of the drive cylinder is connected to the first gripper and the second gripper through a transmission structure to drive the first gripper and the second gripper to move in opposite directions. The control valve is used to eliminate the external force exerted by the drive cylinder on the first or second gripper.
[0006] In an optional embodiment, the transmission structure includes a rotating rod, a first connecting rod, and a second connecting rod; The rotating rod is rotatably connected to the mounting bracket and hinged to the movable end of the drive cylinder, which is used to drive the rotating rod to rotate relative to the mounting bracket. The two ends of the first connecting rod are respectively hinged to the rotating rod and the first gripper, and the two ends of the second connecting rod are respectively hinged to the rotating rod and the second gripper. The first link is hinged to the first position of the rotating rod, the second link is hinged to the second position of the rotating rod, and the third position of the rotating rod is rotatably connected to the mounting bracket, with the third position located between the first and second positions.
[0007] In an optional embodiment, a first rotating shaft is configured at a first position, and a second rotating shaft is configured at a second position; a first connecting rod is configured with a first mating hole, and a second connecting rod is configured with a second mating hole, wherein the first rotating shaft is rotatably engaged with the first mating hole, and the second rotating shaft is rotatably engaged with the second mating hole; Wherein, at least one of the first mating hole and the second mating hole is a first strip hole, and the return structure is disposed in the first strip hole and is used to make the first gripper or the second gripper have a tendency to move in the direction of disengaging from the fabric.
[0008] In an optional embodiment, the return structure includes a first movable block and a first elastic element; the first movable block can slide along the extension direction of the first strip hole, the first movable block abuts against the first rotating shaft, and the first elastic element is used to make the first connecting rod have a tendency to drive the first gripper to move in the direction of disengaging from the fabric, or to make the second connecting rod have a tendency to drive the second gripper to move in the direction of disengaging from the fabric.
[0009] In an optional embodiment, the first gripper is provided with a third rotating shaft, and the second gripper is provided with a fourth rotating shaft; the first connecting rod is provided with a third mating hole, and the second connecting rod is provided with a fourth mating hole, the third rotating shaft is rotatably engaged with the third mating hole, and the fourth rotating shaft is rotatably engaged with the fourth mating hole; Among them, at least one of the third mating hole and the fourth mating hole is a second strip hole, and the return structure is disposed in the second strip hole and is used to make the first gripper or the second gripper have a tendency to move in the direction of disengaging from the fabric.
[0010] In an optional implementation, the return structure includes a second movable block and a second elastic element; The second movable block can slide along the extension direction of the second strip hole. The second movable block abuts against the third rotating shaft. The second elastic element is used to make the first gripper or the second gripper have a tendency to move in the direction of detachment from the fabric.
[0011] In an optional embodiment, the mounting bracket is configured with a first slide rail, a first slider, a second slide rail, and a second slider; Both the first slide rail and the second slide rail extend along a first preset direction and are spaced apart. The first slider cooperates with the first slide rail, and the second slider cooperates with the second slide rail. The first slider is connected to the first gripper, and the second slider is connected to the second gripper.
[0012] In a second aspect, the present invention provides a fabric transfer device, which includes a moving module and the aforementioned fabric clamping assembly. The movable part of the mobile module is connected to the mounting frame and is used to drive the mounting frame to move in space in at least one direction.
[0013] In an optional embodiment, the moving module includes a linear drive mechanism for driving the mounting bracket to move along a second preset direction, which is perpendicular to the first preset direction.
[0014] The beneficial effects of the fabric clamping assembly and fabric transfer device provided in the embodiments of the present invention include: The fabric clamping assembly includes a mounting frame, a drive unit, a first gripper, a second gripper, and a return structure. The drive unit is connected to the mounting frame. Both the first and second grippers are movably connected to the mounting frame along a first preset direction, and both are drive-connected to the drive unit. The drive unit drives the first and second grippers to move closer or further apart to clamp or release the fabric. The return structure is connected to the drive unit and either the first or second gripper, and is used to disengage at least one of the first and second grippers from the fabric when the external force exerted by the drive unit on the first or second gripper disappears. This fabric clamping assembly is applied to fabric transfer devices, which can improve the efficiency of fabric transfer, reduce labor costs, adapt to fabrics of different thicknesses, and reduce seam alignment errors. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a structural schematic diagram of the fabric clamping assembly provided in this embodiment from a first-view perspective; Figure 2 This is a structural schematic diagram of the fabric clamping assembly provided in this embodiment from a second perspective; Figure 3 This is a partial schematic diagram of the fabric clamping assembly provided in this embodiment; Figure 4 This is a structural schematic diagram of the fabric clamping assembly provided in other embodiments of the present invention from a second perspective; Figure 5 A partial schematic diagram of a fabric clamping assembly provided in other embodiments of the present invention; Figure 6This is a schematic diagram of the structure of the first slide rail and the second slide rail provided in this embodiment; Figure 7 This is a schematic diagram of the fabric transfer device provided in this embodiment.
[0017] Icons: 100-Fabric clamping assembly; 110-Mounting frame; 130-Drive unit; 150-First gripper; 170-Second gripper; 190-Return structure; 131-Drive cylinder; 132-Control valve; 133-Transmission structure; 134-Rotating rod; 135-First connecting rod; 136-Second connecting rod; 137-First rotating shaft; 138-First mating hole; 191-First movable block; 192-First elastic element; 139-Third rotating shaft; 141-Third mating hole; 193-Second movable block; 194-Second elastic element; 111-First slide rail; 112-First slider; 113-Second slide rail; 114-Second slider; 200-Fabric transfer device; 210-Moving module; 211-Linear drive mechanism. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0019] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0021] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.
[0022] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0023] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.
[0024] Please refer to Figure 1 and Figure 2 This embodiment provides a fabric clamping assembly 100, which includes a mounting frame 110, a drive unit 130, a first gripper 150, a second gripper 170, and a return structure 190. The drive unit 130 is connected to the mounting frame 110; the first gripper 150 and the second gripper 170 are both movably connected to the mounting frame 110 along the first preset direction, and the first gripper 150 and the second gripper 170 are both connected to the drive unit 130 in a transmission manner. The drive unit 130 is used to drive the first gripper 150 and the second gripper 170 to move closer or further away from each other in order to clamp or release the fabric. The return structure 190 is connected to the drive unit 130, the first gripper 150 or the second gripper 170, and is used to cause at least one of the first gripper 150 and the second gripper 170 to detach from the fabric when the external force exerted by the drive unit 130 on the first gripper 150 or the second gripper 170 disappears.
[0025] Please refer to Figure 1 and Figure 2 The working principle of the fabric clamping assembly 100 is as follows: The fabric clamping assembly 100 includes a mounting frame 110, a drive unit 130, a first gripper 150, a second gripper 170, and a return structure 190. The drive unit 130 is connected to the mounting frame 110. The first gripper 150 and the second gripper 170 are movably connected to the mounting frame 110 along a first preset direction, and the first gripper 150 and the second gripper 170 are drive-connected to the drive unit 130. The drive unit 130 is used to drive the first gripper 150 and the second gripper 170 to move closer or further away from each other to clamp or release the fabric. Therefore, through the above-described structural configuration, the clamping or release of the fabric can be accomplished by controlling the drive unit 130. Moreover, when configuring the drive unit 130, the first gripper 150, and the second gripper 170, the drive unit 130 can drive at least one of the first gripper 150 and the second gripper 170 to move. In this embodiment, the drive unit 130 drives the first gripper 150 and the second gripper 170 to move synchronously and in opposite directions. The purpose is to enable the first gripper 150 and the second gripper 170 to move synchronously and in opposite directions during the clamping or release of the fabric, so as to adapt to the clamping requirements of fabrics with different thicknesses or different layers. Based on the above structure, the fabric clamping assembly 100 is also equipped with a return structure 190. The return structure 190 is configured so that when the external force exerted by the drive unit 130 on the first gripper 150 or the second gripper 170 disappears, that is, when the first gripper 150 and the second gripper 170 release the fabric under the action of the drive unit 130, at least one of the first gripper 150 and the second gripper 170 can disengage from the fabric, thereby preventing the first gripper 150 or the second gripper 170 from pressing on the fabric during the fabric release process. The force causes friction between the first gripper 150 or the second gripper 170 and the fabric when the fabric clamping assembly is removed, which in turn causes the fabric to shift during the removal of the fabric clamping assembly 100, resulting in an alignment error at the seam start point. Moreover, in this embodiment, since the driving unit 130 drives the first gripper 150 and the second gripper 170 to move synchronously in opposite directions, when the above-mentioned return structure 190 is configured, both the first gripper 150 and the second gripper 170 will detach from the fabric during the release of the fabric. In summary, the fabric clamping assembly 100 is applied to the fabric transfer device 200, which can improve the efficiency of fabric transfer, reduce labor costs, adapt to fabrics of different thicknesses, and reduce the alignment error of the seam start point.
[0026] Further, please refer to Figure 1 and Figure 2 In this embodiment, the following configuration method can be adopted when configuring the drive unit 130: The drive unit 130 may include a drive cylinder 131, a control valve 132, and a transmission structure 133; The drive cylinder 131 is connected to the mounting bracket 110, and the control valve 132 is connected to the drive cylinder 131. The movable end of the drive cylinder 131 is connected to the first gripper 150 and the second gripper 170 through the transmission structure 133 to drive the first gripper 150 and the second gripper 170 to move in opposite directions. The control valve 132 is used to eliminate the external force exerted by the drive cylinder 131 on the first gripper 150 or the second gripper 170.
[0027] Therefore, with the above-described structural configuration, when the drive cylinder 131 is activated, the transmission mechanism can drive the first gripper 150 and the second gripper 170 to move in opposite directions, thereby completing the clamping or releasing action of the fabric. To eliminate the clamping effect of the first gripper 150 and the second gripper 170 on the fabric during the fabric release process, the control valve 132 can be used to operate the drive cylinder 131, thereby eliminating the external force exerted by the drive cylinder 131 on the first gripper 150 or the second gripper 170. Specifically, the control valve 132 can be a three-position five-way center-release valve to control the drive cylinder 131. That is, by using the center-release valve in its middle position, the drive cylinder 131 has no output force, so that the first gripper 150 and the second gripper 170 can act under the action of the return structure 190, and thus be able to detach from the fabric. This eliminates the friction between the first gripper 150 and the second gripper 170 and the fabric, so that when the fabric clamping assembly 100 is withdrawn, there is no friction between them and the fabric, avoiding the fabric being pulled out and thus preventing changes in the starting point position.
[0028] It should be noted that in this configuration, during the fabric clamping process, the first gripper 150 and the second gripper 170 will move a certain distance closer to each other. When releasing the fabric, the first gripper 150 and the second gripper 170 need to move a certain distance further apart. To reduce the distance the first gripper 150 and the second gripper 170 move apart during fabric release, the aforementioned return structure 190, along with the control valve 132, can be used to allow the drive unit 130 to move the first gripper 150... After the first and second grippers 150 and 170 have moved a certain distance away from each other, the force exerted by the drive cylinder 131 on the first and second grippers 170 is eliminated by the control valve 132. Then, the first and second grippers 150 and 170 can be disengaged from the fabric by the return structure 190. In this process, the displacement of the first and second grippers 150 and 170 in the direction away from each other can be reduced, thereby preventing them from carrying the fabric out, thus avoiding changes in the starting point position, and also preventing them from interfering with the movement of other structures of the sewing equipment.
[0029] In configuring the transmission structure 133, in order to enable it to drive the first gripper 150 and the second gripper 170 to the drive cylinder 131, the transmission structure 133 includes a rotating rod 134, a first connecting rod 135, and a second connecting rod 136. The rotating rod 134 is rotatably connected to the mounting frame 110 and hinged to the movable end of the drive cylinder 131. The drive cylinder 131 is used to drive the rotating rod 134 to rotate relative to the mounting frame 110. The two ends of the first connecting rod 135 are respectively hinged to the rotating rod 134 and the first gripper 150, and the two ends of the second connecting rod 136 are respectively hinged to the rotating rod 134 and the second gripper 170. The first link 135 is hinged to the first position of the rotating rod 134, the second link 136 is hinged to the second position of the rotating rod 134, and the third position of the rotating rod 134 is rotatably connected to the mounting bracket 110, with the third position located between the first and second positions.
[0030] Therefore, with the above-described structural configuration, the rotating rod 134 can be driven to rotate relative to the mounting frame 110 by the drive cylinder 131. When the rotating rod 134 rotates, since the first connecting rod 135 and the second connecting rod 136 are hinged to each other at both ends of the rotating rod 134, the first connecting rod 135 and the second connecting rod 136 can move in opposite directions when the rotating rod 134 rotates, thereby driving the first gripper 150 and the second gripper 170 to move in opposite directions. Thus, by controlling the action of the drive cylinder 131, the first gripper 150 and the second gripper 170 can be driven to move to complete the action of clamping or releasing the fabric.
[0031] Furthermore, as can be seen from the above, when configuring the return structure 190, its function is to allow the first gripper 150 or the second gripper 170 to disengage from the fabric after the force of the driving cylinder 131 disappears when the first gripper 150 and the second gripper 170 complete the action of releasing the fabric, thereby avoiding friction between them and the fabric and pulling the fabric out, thus preventing changes in the starting point position. Based on this, this embodiment adopts a method in which both the first gripper 150 and the second gripper 170 disengage from the fabric, and the principle of the return structure 190 acting on the first gripper 150 and the second gripper 170 is the same. The difference is that the first gripper 150 and the second gripper 170 disengage from the fabric in opposite directions. Therefore, this embodiment is described using the configuration of the return structure 190 acting on the first gripper 150 as an example. For details, please refer to Figures 1-3 A first rotating shaft 137 is configured in the first position, and a second rotating shaft is configured in the second position; a first connecting rod 135 is configured with a first mating hole 138, and a second connecting rod 136 is configured with a second mating hole. The first rotating shaft 137 is rotatably engaged with the first mating hole 138, and the second rotating shaft is rotatably engaged with the second mating hole. Wherein, at least one of the first mating hole 138 and the second mating hole is a first strip hole, and the return structure 190 is disposed in the first strip hole and is used to make the first gripper 150 or the second gripper 170 have a tendency to move in the direction of disengaging from the fabric.
[0032] Therefore, based on the above structure, when rotatably connecting the first link 135 and the rotating rod 134, and rotatably connecting the second link 136 and the rotating rod 134, a first rotating shaft 137 and a second rotating shaft are provided on the rotating rod 134, and the first rotating shaft 137 and the second rotating shaft are respectively hinged to the first gripper 150 and the second gripper 170. Thus, when the rotating rod 134 rotates, since it is located on both sides of the third position, the first gripper 150 connected to the first link 135 and the second gripper 170 connected to the second link 136 can move in opposite directions. When the return structure 190 is configured, the return structure 190 includes a first movable block 191 and a first elastic member 192; the first movable block 191 can slide along the extension direction of the first strip hole, the first movable block 191 abuts against the first rotating shaft 137, and the first elastic member 192 is used to make the first connecting rod 135 have the tendency to drive the first gripper 150 to move in the direction of disengaging from the fabric, or to make the second connecting rod 136 have the tendency to drive the second gripper 170 to move in the direction of disengaging from the fabric.
[0033] Based on the above structure, this embodiment adopts a method of setting return structures 190 on both the first connecting rod 135 and the second connecting rod 136. Since the two return structures 190 have the same working principle but opposite directions, taking the return structure 190 configured on the first connecting rod 135 as an example, the first mating hole 138 can be a first strip hole, and it extends along the direction from the first rotating shaft to the first gripper 150. Since the first elastic element 192 configured in the first strip hole can push the first movable block 191 to move within the first strip hole, Furthermore, the first movable block 191 abuts against the first rotating shaft 137, thereby enabling the first connecting rod 135 to tend to drive the first gripper 150 to move in the direction of detaching from the fabric. Therefore, after the force of the driving cylinder 131 disappears, the first connecting rod 135 can be activated under the elastic force of the first elastic element 192, and the first gripper 150 can be driven to move in the direction of detaching from the fabric. Moreover, at this time, its displacement is small, but it can make the first gripper 150 disengage from the fabric, thereby eliminating the friction between the first gripper 150 and the fabric.
[0034] Unlike the aforementioned return structure 190, in other embodiments of the present invention, please refer to... Figure 4 and Figure 5 and combined Figures 1-3Alternatively, the return structure 190 can be disposed at the hinge joint between the first connecting rod 135 and the first gripper 150, and at the hinge joint between the second connecting rod 136 and the second gripper 170, as follows; The first gripper 150 is equipped with a third rotating shaft 139, and the second gripper 170 is equipped with a fourth rotating shaft; the first connecting rod 135 is equipped with a third mating hole 141, and the second connecting rod 136 is equipped with a fourth mating hole. The third rotating shaft 139 is rotatably engaged with the third mating hole 141, and the fourth rotating shaft is rotatably engaged with the fourth mating hole; wherein, at least one of the third mating hole 141 and the fourth mating hole is a second strip hole, and the return structure 190 is disposed in the second strip hole and is used to enable the first gripper 150 or the second gripper 170 to have a tendency to move in the direction of disengaging from the fabric.
[0035] Therefore, based on the above structure, when rotatably connecting the first connecting rod 135 and the first gripper 150, and rotatably connecting the second connecting rod 136 and the second gripper 170, the first gripper 150 is equipped with a third rotating shaft 139, the second gripper 170 is equipped with a fourth rotating shaft, the first connecting rod 135 is equipped with a third mating hole 141, and the second connecting rod 136 is equipped with a fourth mating hole, thereby enabling the third rotating shaft 139 to rotatably engage with the third mating hole 141, and the fourth rotating shaft to rotatably engage with the fourth mating hole. When configuring the return structure 190, the return structure 190 includes a second movable block 193 and a second elastic member 194; the second movable block 193 can slide along the extension direction of the second strip hole, the second movable block 193 abuts against the third rotating shaft 139, and the second elastic member 194 is used to make the first gripper 150 or the second gripper 170 have a tendency to move in the direction of disengaging from the fabric.
[0036] Based on the above structure, with return structures 190 provided on both the first link 135 and the second link 136, the working principles of the two return structures 190 are the same but their directions are opposite. Therefore, taking the return structure 190 configured on the first link 135 as an example, the third mating hole 141 can be a first strip hole, extending along the direction from the third axis to the first axis. Since the second elastic element 194 configured in the second strip hole can push the second movable block 193 to slide within the second strip hole, and since the second... The movable block 193 abuts against the third rotating shaft 139, thus enabling the first connecting rod 135 to tend to move the first gripper 150 in the direction of detaching from the fabric. Therefore, after the force of the driving cylinder 131 disappears, the elastic force of the second elastic element 194 can cause the first connecting rod 135 to move and drive the first gripper 150 in the direction of detaching from the fabric. Moreover, at this time, its displacement is small, but it can make the first gripper 150 disengage from the fabric, thereby eliminating the friction between the first gripper 150 and the fabric.
[0037] Further, please refer to Figure 6 and combined Figures 1-5 To ensure smoother movement of the first gripper 150 and the second gripper 170 relative to the mounting bracket 110, the mounting bracket 110 is equipped with a first slide rail 111, a first slider 112, a second slide rail 113, and a second slider 114. The first slide rail 111 and the second slide rail 113 both extend along a first preset direction and are spaced apart. The first slider 112 engages with the first slide rail 111, and the second slider 114 engages with the second slide rail 113. The first slider 112 is connected to the first gripper 150, and the second slider 114 is connected to the second gripper 170.
[0038] Based on the above, please refer to Figures 1-7 This embodiment also provides a fabric transfer device 200, which includes a moving module 210 and the fabric clamping assembly 100 described above; the movable part of the moving module 210 is connected to the mounting frame 110 and is used to drive the mounting frame 110 to move in space in at least one direction.
[0039] The fabric transfer device 200, by employing the aforementioned fabric clamping assembly 100, possesses all the advantages of the aforementioned fabric clamping assembly 100. Furthermore, by configuring the moving module 210, the fabric transfer device 200 can move the fabric clamped by the fabric clamping assembly 100. In this embodiment, the moving module 210 includes a linear drive mechanism 211, which drives the mounting frame 110 to move along a second preset direction, which is perpendicular to the first preset direction. In other embodiments of the present invention, the transfer module may also include multiple linear drive mechanisms 211, which can drive the fabric clamping assembly 100 to move along multiple directions in space.
[0040] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.
Claims
1. A fabric clamping assembly, characterized in that: The fabric clamping assembly includes a mounting frame, a drive unit, a first gripper, a second gripper, and a return structure; The drive unit is connected to the mounting frame; the first gripper and the second gripper are both movably connected to the mounting frame along a first preset direction, and the first gripper and the second gripper are both drive-connected to the drive unit. The drive unit is used to drive the first gripper and the second gripper to move closer or further away from each other to clamp or release the fabric. The return structure is connected to the drive unit, the first gripper or the second gripper, and is used to cause at least one of the first gripper and the second gripper to disengage from the fabric when the external force exerted by the drive unit on the first gripper or the second gripper disappears.
2. The fabric clamping assembly according to claim 1, characterized in that: The drive unit includes a drive cylinder, a control valve, and a transmission structure; The drive cylinder is connected to the mounting bracket, and the control valve is connected to the drive cylinder; the movable end of the drive cylinder is connected to the first gripper and the second gripper through the transmission structure to drive the first gripper and the second gripper to move in opposite directions. The control valve is used to eliminate the external force exerted by the drive cylinder on the first gripper or the second gripper.
3. The fabric clamping assembly according to claim 2, characterized in that: The transmission structure includes a rotating rod, a first connecting rod, and a second connecting rod; The rotating rod is rotatably connected to the mounting frame and hinged to the movable end of the driving cylinder, the driving cylinder being used to drive the rotating rod to rotate relative to the mounting frame; The two ends of the first connecting rod are respectively hinged to the rotating rod and the first gripper; the two ends of the second connecting rod are respectively hinged to the rotating rod and the second gripper. The first connecting rod is hinged to the first position of the rotating rod, the second connecting rod is hinged to the second position of the rotating rod, and the third position of the rotating rod is rotatably connected to the mounting bracket, the third position being located between the first position and the second position.
4. The fabric clamping assembly according to claim 3, characterized in that: The first position is provided with a first rotating shaft, and the second position is provided with a second rotating shaft; the first connecting rod is provided with a first mating hole, and the second connecting rod is provided with a second mating hole, the first rotating shaft is rotatably engaged with the first mating hole, and the second rotating shaft is rotatably engaged with the second mating hole; Wherein, at least one of the first mating hole and the second mating hole is a first strip hole, and the return structure is disposed in the first strip hole and is used to enable the first gripper or the second gripper to have a tendency to move in the direction of disengaging from the fabric.
5. The fabric clamping assembly according to claim 4, characterized in that: The return structure includes a first movable block and a first elastic element; the first movable block can slide along the extension direction of the first strip hole, the first movable block abuts against the first rotating shaft, and the first elastic element is used to make the first connecting rod have a tendency to drive the first gripper to move in the direction of disengaging from the fabric, or to make the second connecting rod have a tendency to drive the second gripper to move in the direction of disengaging from the fabric.
6. The fabric clamping assembly according to claim 3, characterized in that: The first gripper is equipped with a third rotating shaft, and the second gripper is equipped with a fourth rotating shaft; the first connecting rod is equipped with a third mating hole, and the second connecting rod is equipped with a fourth mating hole, the third rotating shaft is rotatably engaged with the third mating hole, and the fourth rotating shaft is rotatably engaged with the fourth mating hole; Wherein, at least one of the third mating hole and the fourth mating hole is a second strip hole, the return structure is disposed in the second strip hole, and is used to enable the first gripper or the second gripper to have a tendency to move in the direction of disengaging from the fabric.
7. The fabric clamping assembly according to claim 6, characterized in that: The return structure includes a second movable block and a second elastic element; The second movable block can slide along the extension direction of the second strip hole, the second movable block rotates to abut against the third, and the second elastic member is used to make the first gripper or the second gripper have a tendency to move in the direction of disengaging from the fabric.
8. The fabric clamping assembly according to any one of claims 2-7, characterized in that: The mounting bracket is equipped with a first slide rail, a first slider, a second slide rail, and a second slider; Both the first slide rail and the second slide rail extend along the first preset direction and are spaced apart. The first slider cooperates with the first slide rail, and the second slider cooperates with the second slide rail. The first slider is connected to the first gripper, and the second slider is connected to the second gripper.
9. A fabric transfer device, characterized in that: The fabric transfer device includes a moving module and a fabric clamping assembly as described in any one of claims 1-8; The movable part of the mobile module is connected to the mounting frame and is used to drive the mounting frame to move in space in at least one direction.
10. The fabric transfer device according to claim 9, characterized in that: The mobile module includes a linear drive mechanism, which drives the mounting bracket to move along a second preset direction, the second preset direction being perpendicular to the first preset direction.