Tentering device for printing and dyeing
By designing a tensioning device that works in conjunction with a movable clamp assembly and a drive motor, the problem of fabric wrinkling during the heating and shaping process was solved, achieving full flattening of the fabric and reducing edge waste.
Patent Information
- Application Number
- CN202423116134.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-17
AI Technical Summary
During the stretching and setting process, the fabric is prone to wrinkles, resulting in wasted fabric edge space, which is difficult to effectively flatten using existing technology.
A printing and dyeing tenter unit is adopted. Through the design of the movable clamp assembly, the guide rod at the lower end of the middle clamp is used to flatten the fabric under the guidance of the opening and closing ring groove. Combined with the cooperation of the drive motor and the bidirectional screw, it is ensured that the fabric is fully flattened before heating and shaping.
This effectively prevents wrinkles from forming on the fabric during the heat setting process, ensuring the fabric remains flat and reducing edge waste.
Smart Images
Figure CN223660423U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tenter frame technology, specifically a tenter frame device for printing and dyeing. Background Technology
[0002] The role of a tenter frame in textile printing and dyeing processes is to stretch and flatten the fabric by heating and stretching it to both sides, performing warp elongation and weft shrinkage treatment to ensure the fabric's width and size, eliminate the tensile internal stress of the fibers in the fabric, and control the fabric shrinkage rate. In the tenter setting process, positive overfeed and reverse overfeed techniques are usually used to control the weight per unit area to meet production requirements.
[0003] During the tenter frame setting process, the fabric usually forms wrinkles and overlaps after passing through the overfeed mechanism. After the tenter frame clamps the fabric, it will hold the wrinkled fabric and heat and set it. The wrinkles in the fabric clamps may even extend to the outside of the fabric clamps to form fixed wrinkles, resulting in waste of the fabric edge position. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a tenter frame for printing and dyeing, which solves the problems mentioned in the background section.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A printing and dyeing tenter includes a frame with annular guide rails and a circulating chain installed on the front and rear sides. A plurality of clipping mechanisms are spaced apart on the circulating chain. Each clipping mechanism includes a mounting beam, a fixed clip, and a movable clip assembly. The mounting beams are spaced apart on the circulating chain. The fixed clip is integrally formed and fixed to the front end of the mounting beam. The front end of the fixed clip has an installation opening. The movable clip assembly is rotatably connected within the installation opening. The movable clip assembly includes a rotating shaft, a central clip, and flattening clips symmetrically installed on both sides of the central clip. A bidirectional screw is rotatably connected to the lower side of the central clip. A flattening nut is threaded onto the bidirectional screw and slides against the inner side of the flattening clip. A guide rod is rotatably connected to the lower end of the central clip. An opening and closing annular groove is provided on the annular guide rail, and the guide rod slides through the opening and closing annular groove.
[0009] Preferably, a drive wheel is fixed in the middle of the bidirectional screw, and an installation slot is provided on the middle clamp. The drive wheel is installed in the installation slot and protrudes out of the outside of the installation slot.
[0010] Preferably, a drive motor is mounted on the frame, and the output end of the drive motor is connected to a drive roller, which abuts against the drive wheel.
[0011] Preferably, the two ends of the bidirectional screw are threaded with positioning nuts, which are disposed on both sides of the flattening nut.
[0012] Preferably, the flattening clip has a hidden groove on the side facing the middle clip, and a return spring is connected between the hidden groove and the middle clip.
[0013] Preferably, a lower clamp block one is fixed to the front end of the fixed clamp, and driven slide rails are symmetrically arranged at both ends of the lower clamp block, and a lower clamp block two is slidably installed on the driven slide rails.
[0014] Preferably, guide beams are provided on both sides of the middle clamp, and the flattening clamp is slidably mounted on the guide beams.
[0015] (III) Beneficial Effects
[0016] This utility model provides a tenter frame for printing and dyeing. It has the following beneficial effects:
[0017] 1. In this utility model, the guide rod at the lower end of the middle clamp, under the guidance of the opening and closing ring groove, enables the movable clamp assembly to open and close on the fixed clamp. When the movable clamp assembly is closed, the drive wheel at the lower end of the middle clamp moves toward the drive roller and abuts against the drive roller, causing the flattening nut to push the two flattening clamps to slide to both sides on the bidirectional screw, thereby flattening the fabric sandwiched in the middle and avoiding wrinkles caused by heat setting. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a printing and dyeing tenter device according to the present invention;
[0019] Figure 2 This is a schematic diagram of the movable clamp assembly in this utility model;
[0020] Figure 3 This is a schematic diagram of the opening and closing annular groove in this utility model.
[0021] In the diagram: 1. Frame; 2. Circular guide rail; 3. Circulating chain; 4. Opening and closing ring groove; 41. Outer ring; 42. Inner ring; 43. Opening and closing inclined groove; 5. Mounting beam; 6. Fixed clamp; 7. Rotating shaft; 8. Middle clamp; 9. Flattening clamp; 10. Return spring; 11. Guide beam; 12. Bidirectional screw; 13. Flattening nut; 14. Sliding rod; 15. Guide rod; 16. Drive wheel; 17. Drive roller; 18. Positioning nut. Detailed Implementation
[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0023] This utility model provides a tenter frame device for printing and dyeing.
[0024] like Figure 1-3 As shown, the machine includes a frame 1, with annular guide rails 2 and a circulating chain 3 installed on the front and rear sides of the frame 1. The annular guide rails 2 are provided with opening and closing annular grooves 4. The opening and closing annular grooves 4 are provided with an outer ring 41 and an inner ring 42 connected end to end, and an opening and closing inclined groove 43 connecting the outer ring 41 and the inner ring 42. Several clamping mechanisms are installed at intervals on the circulating chain 3.
[0025] The clamping mechanism includes mounting beams 5, fixed clamps 6, and movable clamping components. Several mounting beams 5 are spaced apart on the circulating chain 3. The fixed clamps 6 are integrally formed and fixed to the front end of the mounting beams 5. The front end of the fixed clamps 6 is provided with an installation opening. A lower clamp block 1 is fixed to the front end of the fixed clamps 6. A driven slide rail is symmetrically provided at both ends of the lower clamp block. A lower clamp block 2 is slidably installed on the driven slide rail. Positioning pins are provided on the lower clamp block 1 and the lower clamp block 2.
[0026] The movable clamp assembly is rotatably connected within the mounting opening. The movable clamp assembly includes a rotating shaft 7, a middle clamp 8, and flattening clamps 9 symmetrically mounted on both sides of the middle clamp 8. The rotating shaft 7 is rotatably connected within the mounting opening. The flattening clamp 9 has a hidden groove concentric with the rotating shaft 7 on the side facing the middle clamp 8. A return spring 10 is connected between the hidden groove and the middle clamp 8. The return spring 10 can stretch the flattening clamp 9 to slide closer to the middle clamp 8 and hide the return spring 10 within the hidden groove, allowing the flattening clamp 9 to fit tightly against the middle clamp 8 in a free state.
[0027] The middle clamp 8 is provided with guide beams 11 on both sides, and the flattening clamp 9 is slidably installed on the guide beams 11. The flattening clamp 9 is provided with a sliding groove at the position corresponding to the guide beam 11, and the guide beam 11 is slidably inserted into the sliding groove.
[0028] A bidirectional screw 12 is rotatably connected to the lower side of the middle clamp 8. A flattening nut 13 is threaded onto the bidirectional screw 12. The flattening nut 13 slides against the inner side of the flattening clamp 9. Sliding rods 14 extend from the middle clamp 8 to both sides. The flattening nut 13 is slidably connected to the sliding rods 14. A guide rod 15 is rotatably connected to the lower end of the middle clamp 8. The guide rod 15 slides through the opening and closing annular groove 4.
[0029] A drive wheel 16 is fixed in the middle of the bidirectional screw 12. An installation slot is provided on the middle clamp 8, and the drive wheel 16 is installed inside the installation slot, protruding outwards from the outside of the installation slot. Two sets of drive motors are mounted on the frame 1. The output ends of the drive motors are connected to drive rollers 17. The drive rollers 17 are respectively located on the side of the inner ring 42 near the opening and closing inclined groove 43, and abut against the drive wheel 16. The two sets of drive motors rotate in opposite directions. In the above technical solution, the guide rod... 15 Under the limiting sliding action of the opening and closing inclined groove 43, the middle clamp 8 rotates to complete the fastening and fixing of the fabric. At the same time, the drive wheel 16 at the lower end of the middle clamp 8 slides and abuts against the drive roller 17. The drive motor causes the bidirectional screw 12 to rotate, causing the flattening nut to push the flattening clamp 9 to slide to both sides, flattening the wrinkled fabric fixed in the fabric clamp mechanism. During the flattening process, since the flattening clamp 9, the fabric, and the lower clamp block 2 are fixed to each other, the lower clamp block 2 can be driven to slide to both sides with the flattening clamp, ensuring the fixation of the fabric by the flattening clamp and the lower clamp block.
[0030] Further configured, the two ends of the bidirectional screw 12 are threadedly connected with positioning nuts 18, which are located on both sides of the flattening nut 13. The positioning nuts 18 serve as a limit. When the flattening nut slides to both sides of the bidirectional screw 12 and abuts against the position of the positioning nut 18, they abut against each other and lock, that is, they just flatten the fabric. At this time, slippage will occur between the drive wheel 16 and the drive roller 17 to avoid excessive slippage of the flattening clip, which would cause excessive stress. The position of the positioning nut 18 can be adjusted to adapt to the flattening requirements of different overfeed rates.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A tenter frame for printing and dyeing, comprising a frame, with annular guide rails and a circulating chain installed on the front and rear sides of the frame, characterized in that: The circulating chain is equipped with several clamping mechanisms at intervals. Each clamping mechanism includes a mounting beam, a fixed clamp, and a movable clamp assembly. The mounting beams are spaced apart on the circulating chain. The fixed clamp is integrally formed and fixed to the front end of the mounting beam. The front end of the fixed clamp is provided with an installation opening. The movable clamp assembly is rotatably connected to the installation opening. The movable clamp assembly includes a rotating shaft, a central clamp, and flattening clamps symmetrically installed on both sides of the central clamp. A bidirectional screw is rotatably connected to the lower side of the central clamp. A flattening nut is threaded onto the bidirectional screw. The flattening nut slides and abuts against the inner side of the flattening clamp. A guide rod is rotatably connected to the lower end of the central clamp. An opening and closing ring groove is provided on the annular guide rail. The guide rod slides through the opening and closing ring groove.
2. The printing and dyeing tenter apparatus according to claim 1, characterized in that: A drive wheel is fixed in the middle of the bidirectional screw, and an installation slot is provided on the middle clamp. The drive wheel is installed in the installation slot and protrudes out of the outside of the installation slot.
3. A printing and dyeing tenter apparatus according to claim 2, characterized in that: A drive motor is mounted on the frame, and a drive roller is connected to the output end of the drive motor. The drive roller abuts against the drive wheel.
4. A printing and dyeing tenter apparatus according to claim 3, characterized in that: The two ends of the bidirectional screw are threaded with positioning nuts, which are located on both sides of the flattening nut.
5. A printing and dyeing tenter apparatus according to claim 4, characterized in that: The flattening clamp has a hidden groove on the side facing the middle clamp, and a return spring is connected between the hidden groove and the middle clamp.
6. A printing and dyeing tenter apparatus according to claim 5, characterized in that: The front end of the fixed clamp is fixed with a lower clamp block one, and the two ends of the lower clamp block are symmetrically provided with driven slide rails, and a lower clamp block two is slidably installed on the driven slide rails.
7. A printing and dyeing tenter apparatus according to claim 6, characterized in that: Guide beams are provided on both sides of the middle clamp, and the flattening clamp is slidably mounted on the guide beams.