Tenter with precise width adjustment

Abstract

The utility model relates to the technical field of tenter -frame, disclose a tenter -frame with accurate width adjustment, including work table, the top left side of work table front and back end all are fixedly connected with stand no.

Description

Technical Field

[0001] This utility model relates to the field of tenter frame technology, and in particular to a tenter frame with precise width adjustment. Background Technology

[0002] Initially, tenter frames used steam heating. Later, with the development of electrical technology, electric heating emerged, improving heating efficiency and temperature control accuracy. Today, some tenter frames use more advanced heating technologies, such as infrared heating and hot air circulation heating. These technologies enable more uniform heating of fabrics and improve the quality of tenter setting. With the advancement of textile technology, the performance requirements for tenter frames are becoming increasingly demanding, such as higher production efficiency, more precise tension control, and greater energy efficiency and environmental friendliness. Enterprises need to continuously innovate technologically to meet market demands.

[0003] During the scouring, bleaching, and dyeing processes, the warp of the fabric is subjected to significant tension, causing elongation, while the weft shrinks, resulting in unstable dimensional shape. Tensioning can gradually widen the width of the damp fabric to a specified size, and then stabilize it through drying. This reduces width variations during use, lowers warp shrinkage, and ensures the fabric dimensions meet design requirements, satisfying subsequent processing and usage needs. During tensioning, the fiber molecular chains are readjusted and rearranged in new positions, thereby improving the fabric's dimensional thermal stability and other performance properties, ensuring the fabric maintains good performance during subsequent use and washing. In existing technologies... By using a tenter frame, the fabric is first smoothly fed in and fixed by a guide device. The fabric is then stretched to both sides by a chain drive. The fabric is then preheated and then set at high temperature in a drying oven, allowing the fiber molecules to be fixed in their new positions, stabilizing the width and shape. Finally, the fabric is cooled by a cooling device and then sent out by a fabric output device. However, this type of tenter frame cannot precisely adjust the width during the tenter process, resulting in the width not meeting the requirements. This leads to ineffective use of the fabric during the cutting process, increasing cutting losses and wasting raw materials. For some high-end fabrics, this waste can significantly increase production costs. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a tenter frame with precise width adjustment, aiming to improve the problem in the prior art where the width cannot be precisely adjusted during the tenter frame process, resulting in the width not meeting the requirements. This leads to the ineffective use of fabric during the cutting process, increasing cutting losses and wasting raw materials. For some high-end fabrics, this waste can significantly increase production costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tenter frame with precise width adjustment, comprising a worktable, wherein two columns are fixedly connected to the front and rear ends of the top left side of the worktable, an adjusting roller is rotatably connected between the two columns, an adjusting disc is slidably connected to the front and rear sides of the adjusting roller, adjusting screws are threadedly connected to the outer sides of the two columns, adjacent ends of the two adjusting screws are rotatably connected to the outer sides of the two adjusting discs, auxiliary sleeves are fixedly connected to the inside of the two columns, adjacent ends of the two auxiliary sleeves are fixedly connected to the outer bottom ends of the two adjusting discs, two columns are fixedly connected to the front and rear ends of the top right side of the worktable, a heating roller is rotatably connected between the two columns, a drive assembly is provided at the rear end of the top right side of the worktable, and a tension adjustment mechanism is provided at the top of the worktable.

[0006] As a further description of the above technical solution:

[0007] The tension adjustment mechanism includes two electric telescopic rods, which are fixedly connected to the front and rear sides of the top of the workbench, respectively. Two crossbars are fixedly connected between the two electric telescopic rods. The front and rear ends of the top of the top crossbar and the front and rear ends of the bottom of the bottom crossbar are threaded with adjusting bolts. An arc-shaped plate is threaded to one adjacent end of each of the adjusting bolts.

[0008] As a further description of the above technical solution:

[0009] The drive assembly includes a drive motor, which is fixedly connected to the rear end of the top right side of the worktable. The output end of the drive motor and the rear end of the heating roller are both fixedly connected to chain gears, and drive chains are meshed with the outer sides of the two chain gears.

[0010] As a further description of the above technical solution:

[0011] A controller is fixedly connected to the top front side of the workbench, and the controller is electrically connected to the heating roller, the electric telescopic rod and the drive motor respectively.

[0012] As a further description of the above technical solution:

[0013] A flame-retardant box is fixedly connected to the bottom front side of the workbench, and multiple batteries are fixedly connected inside the flame-retardant box.

[0014] As a further description of the above technical solution:

[0015] A charging port is provided in the center of the front side of the flame-retardant box, and a dust cover is rotatably connected to the top of the charging port.

[0016] As a further description of the above technical solution:

[0017] Multiple power indicator lights are fixedly connected to the front left side of the flame-retardant box, and these power indicator lights are electrically connected to multiple batteries.

[0018] As a further description of the above technical solution:

[0019] A thermometer is fixedly connected to the top front right end of the workbench, and the thermometer is electrically connected to the heating roller.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this invention, rotating the adjusting screw causes it to move axially, driving the adjusting disc to slide on the adjusting roller. An auxiliary sleeve restricts the circumferential rotation of the adjusting disc, thus initially defining the fabric width. Then, starting the drive motor, via chain gears and a drive chain, causes the heating roller to rotate and heat the fabric for shaping, achieving precise adjustment and stable shaping of the fabric width. The width can be flexibly adjusted according to different fabric requirements, avoiding cooling shrinkage and deformation, ensuring dimensional stability, and is suitable for processing various fabric specifications, improving the processing accuracy and applicability of the tenter frame.

[0022] 2. In this utility model, the spacing between the crossbars is adjusted by extending and retracting the electric telescopic rod, thereby changing the contact pressure between the arc-shaped plate and the fabric. Then, rotating the adjusting bolt moves the arc-shaped plate, achieving initial tension adjustment and local fine-tuning. During transmission, the electric telescopic rod compensates for tension fluctuations in real time, achieving precise adjustment and real-time compensation of fabric tension. Tension can be flexibly adjusted according to fabric material, maintaining constant tension and avoiding width variations or fabric damage due to uneven tension, thus improving processing accuracy and finished product quality. Attached Figure Description

[0023] Figure 1 This is a perspective view of the tenter frame with precise width adjustment proposed in this utility model;

[0024] Figure 2 This is a right view of the tenter frame with precise width adjustment proposed in this utility model;

[0025] Figure 3 This is a schematic diagram of the drive assembly in the tenter frame with precise width adjustment proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the battery structure in the tenter frame with precise width adjustment proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of the adjusting screw in the tenter frame with precise width adjustment proposed in this utility model.

[0028] Legend:

[0029] 1. Workbench; 2. Column 1; 3. Adjusting roller; 4. Adjusting disc; 5. Adjusting screw; 6. Auxiliary sleeve; 7. Column 2; 8. Heating roller; 9. Electric telescopic rod; 10. Crossbar; 11. Adjusting bolt; 12. Arc plate; 13. Drive motor; 14. Chain and gear; 15. Drive chain; 16. Controller; 17. Flame retardant box; 18. Battery; 19. Charging port; 20. Dust cover; 21. Power indicator light; 22. Temperature gauge. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5 This utility model provides an embodiment of a tenter frame with precise width adjustment, comprising a worktable 1. Columns 2 are fixedly connected to the front and rear ends of the top left side of the worktable 1. An adjusting roller 3 is rotatably connected between the two columns 2. Adjusting discs 4 are slidably connected to the front and rear sides of the adjusting roller 3. Adjusting screws 5 are threadedly connected to the outer sides of the two columns 2. Adjacent ends of the two adjusting screws 5 are rotatably connected to the outer sides of the two adjusting discs 4. Auxiliary sleeves 6 are fixedly connected inside the two columns 2. Adjacent ends of the two auxiliary sleeves 6 are respectively fixed... The bottom of the two adjusting discs 4 are fixedly connected to the outer side. The front and rear ends of the top right side of the worktable 1 are fixedly connected to the column 2 7. The heating roller 8 is rotatably connected between the two column 2 7. The top right rear end of the worktable 1 is provided with a drive assembly, which includes a drive motor 13. The drive motor 13 is fixedly connected to the top right rear end of the worktable 1. The output end of the drive motor 13 and the rear end of the heating roller 8 are both fixedly connected to the chain gear 14. The outer sides of the two chain gears 14 are meshed with drive chains 15. The top of the worktable 1 is provided with a tension adjustment mechanism.

[0032] Specifically, an adjusting roller 3 is rotatably connected between a column 2 fixedly connected to the front and rear ends of the top left side of the workbench 1. An adjusting disc 4 is slidably connected to the front and rear sides of the adjusting roller 3. An adjusting screw 5 is threadedly connected to the outside of the column 2, with one adjacent end of the adjusting screw 5 rotatably connected to the outside of the adjusting disc 4. An auxiliary sleeve 6, fixedly connected inside the column 2, has one adjacent end fixedly connected to the bottom of the outer side of the adjusting disc 4. When the fabric width needs to be adjusted, the operator rotates the adjusting screw 5. Because the adjusting screw 5 is threadedly connected to the column 2, its rotational motion is converted into axial movement, which in turn drives the adjusting disc 4 to slide axially on the outer surface of the adjusting roller 3. At this time, the auxiliary sleeve 6 restricts the circumferential rotation of the adjusting disc 4, allowing it to only rotate along the auxiliary sleeve 6. The axial movement ensures precise adjustment of the distance between the two adjusting discs 4, achieving initial definition of the fabric width. This structure, through the cooperation of threaded transmission and sleeve guide, precisely converts rotational motion into linear movement, preventing offset when the adjusting discs 4 slide and ensuring the accuracy of width adjustment. The heating roller 8 is rotatably connected between the two columns 7 fixedly connected to the front and rear ends of the top right side of the worktable 1. A drive assembly is set at the rear end of the top right side of the worktable 1. In the drive assembly, the drive motor 13 is fixedly connected to the top of the worktable 1, and its output end and the rear end of the heating roller 8 are both fixedly connected to chain gears 14. The outer sides of the two chain gears 14 mesh with the drive chain 15. When the drive motor 13 starts, the output shaft drives the chain gears. The chain gear 14 at the rear end of the heating roller 8 rotates via the drive chain 15, causing the heating roller 8 to rotate at a constant speed. The heating roller 8 has an internal heating device that maintains its outer surface temperature at a set value, heating and shaping the passing fabric. This ensures the adjusted width remains stable under high temperature, preventing shrinkage or deformation after cooling. During fabric transport, it first passes through the adjusting roller 3, where two adjusting discs 4 limit its width. Then it enters the heating roller 8 area. The rotation of the heating roller 8 drives the fabric forward, and the high surface temperature softens and shapes the fabric fibers, achieving precise width adjustment. During this process, the adjustment screw 5 and auxiliary sleeve 6 work together to achieve the desired adjustment. The precise positioning of the adjustment disc 4 ensures the accuracy of width adjustment; the drive motor 13 drives the heating roller 8 to operate stably through chain transmission, ensuring the uniformity of the heating and shaping process. Through the threaded transmission and guiding cooperation of the adjusting screw 5 and the auxiliary sleeve rod 6, the adjustment disc 4 is driven to slide precisely on the adjusting roller 3 to limit the width. Combined with the transmission of the drive motor 13 through the chain gear 14 and the drive chain 15, the heating roller 8 is driven to rotate and heat and shape the fabric, realizing the precise adjustment and stable shaping effect of the fabric width. This tenter frame can flexibly adjust the width size according to the processing requirements of different fabrics, and ensure the dimensional stability through heating and shaping. It is suitable for precise width control scenarios of various specifications of fabrics in textile production.

[0033] Reference Figure 1 and Figure 2The tension adjustment mechanism includes two electric telescopic rods 9, which are fixedly connected to the front and rear sides of the top of the workbench 1 respectively. Two crossbars 10 are fixedly connected between the two electric telescopic rods 9. The front and rear ends of the top of the top crossbar 10 and the front and rear ends of the bottom of the bottom crossbar 10 are threaded with adjusting bolts 11. An arc plate 12 is threaded to one of the adjacent ends of the multiple adjusting bolts 11.

[0034] Specifically, two electric telescopic rods 9 are fixedly connected to the front and rear sides of the top of the workbench 1, and two crossbars 10 are fixedly connected between the two electric telescopic rods 9 to form a frame structure. The front and rear ends of the top crossbar 10 and the front and rear ends of the bottom crossbar 10 are threaded with adjusting bolts 11. An arc plate 12 is threaded to the adjacent end of the adjusting bolt 11. When it is necessary to adjust the fabric tension, the vertical distance between the two crossbars 10 is first adjusted by the telescopic movement of the electric telescopic rods 9, thereby changing the contact pressure between the arc plate 12 and the fabric. The telescopic amount of the electric telescopic rods 9 is precisely controlled by the control system to ensure synchronous movement on both sides and avoid fabric deviation. For local tension fine adjustment, the operator rotates the adjusting bolt 11. Because it is threaded to the crossbar 10, the rotation generates axial movement, causing the arc plate 12 to move closer to or away from the fabric. The curved surface design of the arc plate 12 can apply pressure evenly and avoid damage to the fabric. Multiple adjusting bolts 11 correspond to different areas of the fabric, which can realize zoned tension adjustment to adapt to the tension requirements of different parts of the fabric. During transmission, the two crossbars 10 of the tension adjustment mechanism are held at a set height by the electric telescopic rod 9. The arc plate 12 contacts the fabric surface and applies initial pressure. When the fabric tension fluctuates, the electric telescopic rod 9 can adjust the position of the crossbars 10 in real time. The pressure change of the arc plate 12 compensates for the tension fluctuation. For example, when the fabric tension increases, the electric telescopic rod 9 extends to reduce the pressure of the arc plate 12 on the fabric, avoiding excessive tension that could cause the fabric to stretch and deform. When the tension decreases, the electric telescopic rod 9 shortens to increase the pressure and prevent the fabric from loosening and accumulating. The distance between the crossbars 10 is adjusted by the up and down extension of the electric telescopic rod 9. In conjunction with the adjusting bolt 11, the arc plate 12 is moved back and forth, achieving precise adjustment and real-time compensation of the fabric tension. This tension adjustment mechanism can flexibly adjust the tension according to parameters such as fabric material and thickness, ensuring that the fabric maintains constant tension during width adjustment and heat setting, avoiding width changes or fabric damage caused by uneven tension, and improving the processing accuracy of the tenter frame and the quality of the finished fabric.

[0035] Reference Figure 1 , Figure 2 and Figure 4A controller 16 is fixedly connected to the top front side of the workbench 1. The controller 16 is electrically connected to the heating roller 8, the electric telescopic rod 9, and the drive motor 13. A flame-retardant box 17 is fixedly connected to the bottom front side of the workbench 1. Multiple batteries 18 are fixedly connected inside the flame-retardant box 17. A charging port 19 is opened in the center of the front side of the flame-retardant box 17. A dust cover 20 is rotatably connected to the top of the charging port 19. Multiple power indicator lights 21 are fixedly connected to the left front end of the flame-retardant box 17. The multiple power indicator lights 21 are electrically connected to the multiple batteries 18. A thermometer 22 is fixedly connected to the right front end of the top of the workbench 1. The thermometer 22 is electrically connected to the heating roller 8.

[0036] Specifically, the controller 16, as the core of the equipment, is electrically connected to the heating roller 8, the electric telescopic rod 9, and the drive motor 13. The operator presets the operating parameters of the tenter frame through the controller 16, such as the temperature of the heating roller 8, the telescopic range of the electric telescopic rod 9, and the speed of the drive motor 13. During operation, the controller 16 monitors the status of each component in real time: it controls the drive motor 13 to start or stop according to the preset program, driving the heating roller 8 to rotate at the set speed via the chain gear 14 and drive chain 15; based on the fabric tension requirements, it sends commands to the electric telescopic rod 9 to adjust the height of the crossbar 10 and the pressure of the curved plate 12 on the fabric; simultaneously, according to... The temperature data fed back by the thermometer 22 dynamically adjusts the heating power of the heating roller 8 to ensure that its temperature is maintained within the set range, realizing the automated and precise operation of the tenter frame. Multiple batteries 18 fixed inside the flame-retardant box 17 serve as backup power and are charged through the charging port 19. The dust cover 20 is rotatably connected to the top of the charging port 19 and is closed when not charging to prevent dust and debris from entering the charging port 19 and affecting the charging effect. When the tenter frame is connected to an external power source, external electrical energy flows in through the charging port 19 to charge the batteries 18. In the event of an external power outage or during mobile operation, the batteries 18 supply power to the controller 16, the heating roller 8, the electric telescopic rod 9, and the drive motor 1. 3. Power supply ensures continuous operation of the equipment. The flame-retardant box 17 is made of flame-retardant material, which can effectively block the heat or open flame generated by the internal battery 18 under abnormal conditions such as overcharging or short circuit, avoiding fire hazards and ensuring the safety of equipment and operators. Multiple power indicator lights 21 on the front left side of the flame-retardant box 17 are electrically connected to the battery 18, displaying the power status of the battery 18 in real time. Each power indicator light 21 corresponds to a group of batteries 18, and the remaining power is intuitively reflected by the number of lights lit. When the power is lower than the set threshold, some power indicator lights 21 are turned off to remind the operator to charge in time. The thermometer 22 on the front right side of the top of the workbench 1 is electrically connected to the heating roller 8. The system is connected to the controller 16, which monitors the surface temperature of the heating roller 8 in real time and feeds the data back to the controller 16. If the temperature is higher than the set upper limit, the controller 16 reduces the heating power of the heating roller 8; if the temperature is lower than the lower limit, the heating power is increased to ensure the temperature stability of the fabric heating and shaping process. Through the intelligent control of each component by the controller 16, the power supply and safety protection of the battery 18 and the flame retardant box 17, the status display of the power indicator 21, and the real-time monitoring of the temperature gauge 22, the system achieves the effects of automated operation of the tenter frame, stable power supply, visualization of equipment status, and precise temperature control, thereby improving the reliability of equipment operation and production efficiency and meeting diverse production needs.

[0037] Working Principle: On the top left side of the workbench 1, two columns 2 serve as a supporting base. An auxiliary sleeve 6 fixed inside the column and an adjusting screw 5 connected externally by threads provide motion guidance and power transmission for the adjusting disc 4 on the adjusting roller 3. When the fabric width needs adjustment, the operator rotates the adjusting screw 5. Based on the threaded engagement between the adjusting screw 5 and the column 2, the rotational motion is converted into axial displacement. This displacement is transmitted to the adjusting disc 4, which is rotatably connected to the adjusting screw 5, causing it to slide axially on the outer surface of the adjusting roller 3. During this process, the auxiliary sleeve 6 plays a crucial role. One end is fixed to the bottom outer side of the adjusting disc 4, restricting the circumferential rotation of the adjusting disc 4 and allowing it to move only axially along the auxiliary sleeve 6. Through this threaded transmission and sleeve-guided mechanism... The distance between the two adjusting discs 4 can be precisely adjusted, thus completing the initial limitation of the fabric width and laying the foundation for subsequent processing. The heating and shaping system on the top right side of the workbench 1 consists of two columns 7, a heating roller 8, and a drive assembly. The two columns 7 support the heating roller 8 to ensure its stable rotation. In the drive assembly, the drive motor 13 is fixed to the rear end of the top right side of the workbench 1. Its output end and the rear end of the heating roller 8 are respectively equipped with chain gears 14, and are connected to the drive chain 15 for transmission. When the drive motor 13 starts, the output shaft drives the chain gears 14 to rotate. Through the meshing transmission of the drive chain 15, the chain gears 14 at the rear end of the heating roller 8 rotate synchronously, thereby making the heating roller 8 rotate at a constant speed. The heating device inside the heating roller 8 continues to work. The surface temperature of the roller is maintained at a set value. After the fabric with adjusted width enters the heating roller 8 area, it is conveyed forward as the heating roller 8 rotates. The fabric fibers soften under high temperature, thus fixing the adjusted width and effectively preventing shrinkage or deformation of the fabric after cooling. The tension adjustment mechanism located at the top of the worktable 1 consists of electric telescopic rods 9, crossbars 10, adjusting bolts 11, and arc plates 12. The two electric telescopic rods 9 are fixed to the front and rear sides of the top of the worktable 1, respectively. Their telescopic movement can adjust the vertical distance between the two crossbars 10 fixed between them, thereby changing the contact pressure between the arc plate 12 and the fabric, realizing the initial adjustment of tension. The telescopic amount of the electric telescopic rods 9 is precisely controlled by the control system to ensure synchronous action on both sides and prevent the fabric from deviating. For fine-tuning of local tension, the operator can rotate the adjusting bolt 11 threadedly connected to the crossbar 10. The rotation of the adjusting bolt 11 causes the arc-shaped plate 12, which is threadedly connected to it, to move closer to or away from the fabric. The curved surface design of the arc-shaped plate 12 ensures that pressure is applied evenly to the fabric surface, avoiding damage. Multiple adjusting bolts 11 correspond to different areas of the fabric, achieving zoned tension adjustment. During fabric transport, the electric telescopic rod 9 holds the crossbar 10 at a set height, and the arc-shaped plate 12 contacts the fabric surface and applies initial pressure. When fabric tension fluctuates, the electric telescopic rod 9 responds in real time, changing the pressure of the arc-shaped plate 12 on the fabric by adjusting the position of the crossbar 10, thus achieving dynamic tension compensation. The controller 16 serves as the core control unit of the equipment.The controller 16 is electrically connected to the heating roller 8, the electric telescopic rod 9, and the drive motor 13. The operator presets the operating parameters of the tenter frame via the controller 16, including the temperature of the heating roller 8, the telescopic range of the electric telescopic rod 9, and the speed of the drive motor 13. During operation, the controller 16 monitors the status of each component in real time: it controls the start and stop of the drive motor 13 according to the preset program, and ensures that the heating roller 8 rotates stably at the set speed through the chain gear 14 and drive chain 15; based on the fabric tension requirements, it sends commands to the electric telescopic rod 9 to precisely adjust the height of the crossbar 10 and the pressure of the arc plate 12; based on the surface temperature data of the heating roller 8 fed back by the thermometer 22, it dynamically adjusts the heating power of the heating roller 8 to maintain the temperature within the set range, achieving automated and precise operation of the tenter frame. Multiple batteries 18 are fixed inside the flame-retardant box 17 at the bottom front of the workbench 1 as backup power, connected via the charging port 19 in the center of the front. When the equipment is connected to an external power source, the battery 18 is charged. When not charging, the dust cover 20 is closed to prevent dust and debris from affecting the charging effect. In the event of an external power outage or during mobile operation, the battery 18 supplies power to the controller 16, heating roller 8, electric telescopic rod 9, and drive motor 13, ensuring continuous operation of the equipment. The flame-retardant box 17 is made of flame-retardant material, effectively blocking the heat or open flame generated by the battery 18 under abnormal conditions such as overcharging or short circuit, ensuring the safety of the equipment and personnel. The power indicator light 21 on the front left side of the flame-retardant box 17 is electrically connected to the battery 18, displaying the battery 18's power status in real time by the number of lit lights. When the power level is lower than a set threshold, some power indicator lights 21 turn off, reminding the operator to charge in time. The temperature gauge 22 on the front right side of the top of the workbench 1 is electrically connected to the heating roller 8, monitoring the surface temperature of the heating roller 8 in real time and feeding the data back to the controller 16 to achieve closed-loop temperature control.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tenter frame with precise width adjustment, comprising a worktable, characterized in that: The top left side of the worktable is fixedly connected to two columns 1 at both the front and rear ends. An adjusting roller is rotatably connected between the two columns 1. An adjusting disc is slidably connected to the front and rear sides of the adjusting roller. An adjusting screw is threadedly connected to the outer side of the two columns 1. The adjacent ends of the two adjusting screws are rotatably connected to the outer sides of the two adjusting discs, respectively. An auxiliary sleeve is fixedly connected to the inside of the two columns 1. The adjacent ends of the two auxiliary sleeves are fixedly connected to the bottom outer sides of the two adjusting discs, respectively. The top right side of the worktable is fixedly connected to two columns 2 at both the front and rear ends. A heating roller is rotatably connected between the two columns 2. A drive assembly is provided at the top right rear end of the worktable. A tension adjustment mechanism is provided at the top of the worktable.

2. The tenter frame with precise width adjustment according to claim 1, characterized in that: The tension adjustment mechanism includes two electric telescopic rods, which are fixedly connected to the front and rear sides of the top of the workbench, respectively. Two crossbars are fixedly connected between the two electric telescopic rods. The front and rear ends of the top of the top crossbar and the front and rear ends of the bottom of the bottom crossbar are threaded with adjusting bolts. An arc-shaped plate is threaded to one adjacent end of each of the adjusting bolts.

3. The tenter frame with precise width adjustment according to claim 1, characterized in that: The drive assembly includes a drive motor, which is fixedly connected to the rear end of the top right side of the worktable. The output end of the drive motor and the rear end of the heating roller are both fixedly connected to chain gears, and drive chains are meshed with the outer sides of the two chain gears.

4. The tenter frame with precise width adjustment according to claim 1, characterized in that: A controller is fixedly connected to the top front side of the workbench, and the controller is electrically connected to the heating roller, the electric telescopic rod and the drive motor respectively.

5. The tenter frame with precise width adjustment according to claim 1, characterized in that: A flame-retardant box is fixedly connected to the bottom front side of the workbench, and multiple batteries are fixedly connected inside the flame-retardant box.

6. The tenter frame with precise width adjustment according to claim 5, characterized in that: A charging port is provided in the center of the front side of the flame-retardant box, and a dust cover is rotatably connected to the top of the charging port.

7. The tenter frame with precise width adjustment according to claim 5, characterized in that: Multiple power indicator lights are fixedly connected to the front left side of the flame-retardant box, and these power indicator lights are electrically connected to multiple batteries.

8. The tenter frame with precise width adjustment according to claim 1, characterized in that: A thermometer is fixedly connected to the top front right end of the workbench, and the thermometer is electrically connected to the heating roller.

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