Sofa upholstery fabric anti-deviation clamping device

Abstract

The utility model relates to the technical field of textile printing and dyeing equipment auxiliary device relates to a sofa decoration fabric anti -migration clamping device, including frame, be located on the conveyer belt of frame, upper connecting frame to be located on the clamping assembly of upper connecting frame, the clamping assembly includes motor for drive, with the ball screw of motor drive connection, with the sliding block of ball screw screw thread cooperation and the clamping jaw for clamping fabric, the clamping assembly still includes: support, mounting plate, ball spline shaft, spline cover, disc spring, air pump and claw shell, the claw shell is connected with the air pump, the clamping jaw is located in the claw shell, and the air pump drives the clamping jaw to open and shut. In the utility model, through the cooperation of disc spring and ball spline shaft in elastic compensation component, can automatically adapt its thickness change and buffer pressure in the process of clamping fabric, prevent the deformation or damage of fabric because of overpressure, effectively avoid the deviation, improve the processing quality.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for textile printing and dyeing equipment, and in particular to a clamping device for preventing the offset of sofa decorative fabric. Background Technology

[0002] In the production process of sofa upholstery fabrics, processes such as printing, embroidery, or composite processing must be carried out on flat and non-shifting fabric to ensure accurate pattern positioning and stable processing quality. The fixing and tensioning of the fabric are key links to achieve high-precision processing. Traditional clamping methods often cannot balance efficiency and adaptability, especially when dealing with fabrics of different thicknesses, elasticities, or surface properties. Problems such as slippage, deformation, or uneven tension are prone to occur, which directly affect the quality of finished products and production efficiency.

[0003] Traditional clamping devices mostly use a mechanical clamping rod with a common spring clip structure. The position and tension of the clamping rods are adjusted manually one by one. The initial elasticity provided by the metal spring is used to achieve basic compression of the fabric. The operator needs to judge whether the tension is appropriate based on personal experience, and then complete the fixation by manually tightening the screw or turning the locking mechanism.

[0004] However, this type of traditional clamping method lacks the ability to dynamically perceive and compensate for the actual state of the fabric in real time. It cannot effectively respond to tension changes caused by variations in fabric thickness, material elasticity, or fluctuations in ambient temperature and humidity. This can easily lead to uneven distribution of clamping force, local overpressure, or insufficient pressure, which in turn causes the fabric to stretch, deform, slip, or shift overall, affecting the processing accuracy and product yield of subsequent processes. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a sofa decorative fabric anti-deviation clamping device, which aims to improve the problem that traditional clamping methods cannot effectively respond to tension changes caused by different fabric thicknesses, material elasticity changes, or environmental temperature and humidity fluctuations.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sofa decorative fabric anti-deviation clamping device, comprising a frame, a conveyor belt mounted on the frame, an upper connecting frame, and a clamping assembly mounted on the upper connecting frame. The clamping assembly includes a motor for driving, a ball screw connected to the motor, a ball nut and a slider threaded with the ball screw, and grippers for clamping the fabric. The clamping assembly further includes: A bracket, which is fixedly mounted on the slider; Mounting plate; The ball spline shaft and the spline sleeve are connected by bolts inside the mounting plate. A disc spring, wherein the disc spring is disposed between the bracket and the mounting plate; An air pump, which is fixedly mounted on the mounting plate; The system includes a claw housing connected to the air pump, a gripper located inside the claw housing, and the air pump driving the gripper to open and close.

[0007] Through the above technical solution, the motor drives the ball screw to precisely control the horizontal movement of the slider, thereby driving the gripper to accurately position. The disc spring provides elastic buffer between the bracket and the mounting plate, which can automatically compensate for the material expansion and contraction caused by changes in ambient temperature and humidity, and provide constant and gentle pressure during clamping, effectively preventing the fabric from being crushed or deformed. The air pump drives the gripper to open and close, and the clamping force is stable and controllable, realizing the automated and reliable clamping and release of the fabric, ensuring the flatness and anti-deviation of the fabric during processing.

[0008] Preferably, a guide rod is also fixed on the upper connecting frame, and the slider is slidably sleeved on the guide rod.

[0009] Through the above technical solution, the guide rod provides precise guidance and reliable anti-torsional support for the movement of the slider, ensuring that the slider and the entire clamping assembly move smoothly along a straight line without deviation or jamming, further improving the positioning and alignment accuracy of the gripper.

[0010] Preferably, the output end of the air pump is connected to a connecting block, and the connecting block is hinged to the gripper via a connecting rod.

[0011] Through the above technical solution, the air pump drives the connecting block to move linearly, and the linear motion is converted into the rotational opening and closing action of the gripper through the linkage mechanism. This transmission method has a compact structure, fast action and reliability, ensuring the execution efficiency and stability of the clamping action.

[0012] Preferably, the claw shell is provided with an openable flap, and the flap is provided with a locking mechanism for locking the flap onto the claw shell.

[0013] The above technical solution allows for quick access to the internal space of the claw housing, making the replacement, maintenance, or cleaning of the grippers extremely convenient, reducing equipment downtime, and improving the maintainability and ease of operation of the equipment.

[0014] Preferably, the locking mechanism includes a pivot and a slide rod on the flip cover, and a hook on the slide rod, wherein the claw housing has a groove that cooperates with the hook.

[0015] Through the above technical solution, the locking mechanism achieves reliable locking of the flip cover by engaging the hook and the slot. It has a simple structure and is easy to operate. To unlock, simply move the slide bar to disengage the hook from the slot, which enables the flip cover to open and close quickly and meets the needs of conveniently replacing the gripper or performing maintenance.

[0016] Preferably, one end of the slide rod is rotatably connected to the rotating shaft, and the hook is located at the other end of the slide rod away from the rotating shaft.

[0017] Through the above technical solution, the lever structure design allows the operator to overcome the locking force between the hook and the slot at the other end by applying only a small force at one end of the slide bar, which is labor-saving and easy to operate.

[0018] Preferably, a control console is provided above the lifting frame for controlling the entire device, and the device is also provided with a lifting mechanism for driving the upper connecting frame to rise and fall.

[0019] Through the above technical solution, the lifting mechanism enables the entire clamping assembly to have height adjustment capability, which can be flexibly adjusted according to the stacking thickness of the fabric, different process requirements, or docking height with upstream and downstream equipment, thus expanding the applicability and production flexibility of the device.

[0020] Preferably, the lifting mechanism includes a hydraulic rod disposed on the lower connecting frame and a lifting frame connected to the piston rod of the hydraulic rod, and the upper connecting frame is fixed on the lifting frame.

[0021] Through the above technical solutions, hydraulic drive can provide a smooth, powerful and precise thrust, ensuring that the lifting frame drives the upper connecting frame and clamping components to rise and fall smoothly, and can stop stably at any position, thus ensuring the stability and consistency of clamping operations at different working heights.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. In this utility model, the disc spring in the elastic compensation component cooperates with the ball spline shaft to automatically adapt to the thickness change of the fabric and buffer the pressure during the clamping process, preventing the fabric from being deformed or damaged due to excessive pressure; the ball screw drive, in conjunction with the guide structure, realizes the smooth and precise horizontal movement of the gripper, ensuring that the fabric always remains taut and aligned during the conveying process, effectively avoiding deviation and improving the processing quality.

[0023] 2. In this utility model, the gripper unit can be quickly replaced. The locking can be quickly released by sliding the hook and flipping the cover plate, which is convenient for changing grippers of different specifications. No tools or complicated operations are required, which significantly improves the changeover efficiency, adapts to the production needs of multiple varieties and small batches, and at the same time maintains stable and reliable clamping force, reduces downtime, and improves overall production efficiency. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a sofa decorative fabric anti-displacement clamping device proposed in this utility model; Figure 2 This is a schematic diagram of the ball screw structure of a sofa decorative fabric anti-deviation clamping device proposed in this utility model; Figure 3 This is a schematic diagram of a disc spring structure for an anti-deviation clamping device for sofa decorative fabric proposed in this utility model; Figure 4 This is a schematic diagram of the hook structure of a sofa decorative fabric anti-deviation clamping device proposed in this utility model; Figure 5 This is a schematic diagram of the gripper structure of a sofa decorative fabric anti-displacement clamping device proposed in this utility model; Explanation of reference numerals in the attached drawings: 1. Frame; 2. Conveyor belt; 3. Lower connecting frame; 4. Hydraulic rod; 5. Lifting frame; 6. Control console; 7. Upper connecting frame; 8. Guide rod; 9. Ball screw; 10. Slider; 11. Ball nut; 12. Bracket; 13. Ball spline shaft; 14. Spline sleeve; 15. Disc spring; 16. Mounting plate; 17. Air pump; 18. Claw housing; 19. Flip cover; 20. Rotary shaft; 21. Slide rod; 22. Hook; 23. Slot; 24. Connecting block; 25. Connecting rod; 26. Gripper; 27. Motor. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0026] Reference Figure 1 and Figure 2 A sofa decorative fabric anti-deviation clamping device includes a frame 1 with a conveyor belt 2 on it. A lower connecting frame 3 is fixedly connected to the inner wall of the frame 1. The device also includes an upper connecting frame 7 with a clamping assembly. The clamping assembly includes a motor 27 for providing driving force. The output end of the motor 27 is connected to a ball screw 9. A slider 10 is connected to the ball screw 9 through a ball nut 11. The clamping assembly also includes a gripper 26 for clamping the fabric. The gripper 26 is linked to the slider 10 through a subsequent mechanism, so as to move and position horizontally under the drive of the motor 27. A control console 6 is provided above the lifting frame 5 for centralized control of the start and stop of the motor 27, hydraulic rod 4 and air pump 17 and other actuators and parameter settings.

[0027] Reference Figure 3The clamping assembly further includes a bracket 12, a mounting plate 16, a set of disc springs 15, an air pump 17, and a claw housing 18. The bracket 12 is fixedly connected to the slider 10 by fasteners and moves horizontally with it. The mounting plate 16 is located below the bracket 12, and the air pump 17 is fixedly mounted on the lower surface of the mounting plate 16. A ball spline shaft 13 passes through the bracket 12 and the mounting plate 16 from top to bottom, and is fixed and axially slidably engaged inside the mounting plate 16 by a spline sleeve 14. The disc springs 15, as elastic compensation elements, are sleeved on the ball spline shaft 13 and are located between the bracket 12 and the mounting plate 16. The two ends of the disc springs 15 abut against the lower surface of the bracket 12 and the upper surface of the mounting plate 16, respectively. This structure allows the mounting plate 16 and the air pump 17 and claw housing 18 below it to make slight elastic floating relative to the bracket 12 in the vertical direction.

[0028] Reference Figure 1 and Figure 5 The claw housing 18 is fixedly connected to the bottom of the air pump 17. The output end of the air pump 17 drives a connecting block 24 to slide vertically in the inner cavity of the claw housing 18. The bottom of the claw housing 18 is provided with a gripper 26. The gripper 26 is rotatably connected to the connecting block 24 through a connecting rod 25. When the air pump 17 is working, the air pump 17 drives the connecting block 24 to move, which in turn drives the gripper 26 to open or close through the connecting rod 25. The precise transmission connection ensures the stability and reliability of the clamping action.

[0029] Reference Figure 5 To enhance the guiding accuracy and stability of the slider 10 during horizontal movement, a guide rod 8 is fixedly installed on the upper connecting frame 7. The slider 10 is slidably sleeved on the guide rod 8, thereby ensuring that the slider 10 can only perform linear reciprocating motion along the axis of the guide rod 8 under the drive of the ball screw 9. Furthermore, in order to achieve precise driving of the gripper 26, a connecting block 24 is connected to the output end of the air pump 17. The connecting block 24 is located inside the gripper housing 18, and the connecting block 24 is rotatably connected to the tail of the gripper 26 through a connecting rod 25.

[0030] Reference Figure 4 To enable quick replacement of the gripper 26, a hinged flip cover 19 is pivotally connected to the gripper housing 18. The flip cover 19 is equipped with a locking mechanism to reliably lock the flip cover 19 onto the gripper housing 18. The locking mechanism specifically includes a rotating shaft 20 fixed on the flip cover 19, a slide rod 21, and a hook 22. One end of the slide rod 21 is rotatably connected around the rotating shaft 20, and the other end of the slide rod 21 is integrally formed or fixedly connected to the hook 22. The gripper housing 18 is provided with a corresponding slot 23 that cooperates with the hook 22. By engaging or disengaging the hook 22 into the slot 23, the flip cover 19 can be locked or unlocked.

[0031] Reference Figure 1 In addition, in order to enable the entire clamping device to adapt to the needs of different working heights, this embodiment also provides a lifting mechanism. The lifting mechanism includes a hydraulic rod 4 vertically mounted on the frame 1 and a lifting frame 5. The upper end of the piston rod of the hydraulic rod 4 is fixedly connected to the lifting frame 5, and the upper connecting frame 7 is fixedly mounted on the lifting frame 5. By controlling the extension and retraction of the hydraulic rod 4, the lifting frame 5 can be driven to drive the entire upper connecting frame 7 and all clamping components to achieve synchronous lifting and lowering, thereby adjusting the working height.

[0032] Working principle: When this sofa upholstery fabric anti-deviation clamping device is needed, the device is first started through the control panel 6. The hydraulic rod 4 drives the lifting frame 5 to move up and down to adjust the height of the upper connecting frame 7. After reaching the designated position, the motors 27 on both sides drive the ball screws 9 on both sides to rotate, which drives the ball nut 11 and the slider 10 to move horizontally. The guide rod 8 restricts the slider 10 from flipping. The ball spline shaft 13 is connected to the slider 10 through the spline sleeve 14 and the bracket 12. The ball spline shaft 13 drives the mounting plate 16 and the air pump 17 below it to move. The disc spring 15 is located between the bracket 12 and the mounting plate 16 to provide elastic compensation, adapt to different fabric thicknesses and prevent overpressure. The air pump 17 pushes the connecting block 24 to slide in the claw housing 18. The connecting rod 25 drives the gripper 26 to open and close to clamp or release the fabric, thereby achieving stable clamping and anti-deviation control of the sofa upholstery fabric.

[0033] When it is necessary to change the gripper 26 according to different fabrics, pull up the hook 22 to release it from the slot 23, so that the hook 22 drives the slide bar 21 to rotate on the rotating shaft 20. After reaching the appropriate position, rotate to open the flip cover 19, remove the gripper 26 from the shaft of the connecting rod 25 and the claw housing 18, replace the appropriate gripper 26, close the flip cover 19, rotate the slide bar 21 and the hook 22 back, insert the hook 22 into the slot 23 to engage, and complete the replacement.

Claims

1. A sofa decorative fabric anti-deviation clamping device, comprising a frame (1), a conveyor belt (2) disposed on the frame (1), a lower connecting frame (3), an upper connecting frame (7), and a clamping assembly disposed on the upper connecting frame (7), the clamping assembly comprising a motor (27) for driving, a ball screw (9) connected to the motor (27) for transmission, a ball nut (11) threadedly engaged with the ball screw (9), a slider (10), and a clamping jaw (26) for clamping the fabric; characterized in that, The clamping assembly further includes: A bracket (12) is fixedly mounted on the slider (10); Mounting plate (16); The ball spline shaft (13) and the spline sleeve (14) are connected by bolts inside the mounting plate (16). Disc spring (15), the disc spring (15) is disposed between the bracket (12) and the mounting plate (16); An air pump (17) is fixedly mounted on the mounting plate (16); And a claw shell (18), the claw shell (18) is connected to the air pump (17), the gripper (26) is disposed in the claw shell (18), and the air pump (17) drives the gripper (26) to open and close.

2. The anti-deviation clamping device for sofa decorative fabric according to claim 1, characterized in that, The upper connecting frame (7) is also fixed with a guide rod (8), and the slider (10) is slidably sleeved on the guide rod (8).

3. The anti-deviation clamping device for sofa decorative fabric according to claim 1, characterized in that, The output end of the air pump (17) is connected to a connecting block (24), and the connecting block (24) is hinged to the gripper (26) via a connecting rod (25).

4. The anti-deviation clamping device for sofa decorative fabric according to claim 1, characterized in that, The claw shell (18) is provided with an openable flip cover (19), and the flip cover (19) is provided with a locking mechanism for locking the flip cover (19) on the claw shell (18).

5. The sofa decorative fabric anti-deviation clamping device according to claim 4, characterized in that, The locking mechanism includes a pivot (20) and a slide bar (21) on the flip cover (19), and a hook (22) on the slide bar (21). The claw shell (18) has a slot (23) that cooperates with the hook (22).

6. The sofa decorative fabric anti-deviation clamping device according to claim 5, characterized in that, One end of the slide rod (21) is rotatably connected to the rotating shaft (20), and the hook (22) is located at the other end of the slide rod (21) away from the rotating shaft (20).

7. The anti-deviation clamping device for sofa decorative fabric according to claim 1, characterized in that, The device is also equipped with a lifting mechanism for driving the upper connecting frame (7) to rise and fall.

8. The anti-deviation clamping device for sofa decorative fabric according to claim 7, characterized in that, The lifting mechanism includes a hydraulic rod (4) mounted on the lower connecting frame (3) and a lifting frame (5) connected to the piston rod of the hydraulic rod (4). The upper connecting frame (7) is fixed on the lifting frame (5). A control console (6) is provided above the lifting frame (5) for controlling the entire device.

Images