A tenter device for fabric processing

Abstract

The application provides a tentering device for fabric processing and relates to the field of tentering devices.The tentering device comprises a constant force assembly, which is composed of a moving mechanism and an adaptive mechanism.The constant force assembly has the function of self-adaptive adjustment of the tentering force provided for the fabric, can compensate the tension change in real time, ensures that the fabric is always subjected to the action of constant tentering force in the whole tentering cycle, effectively avoids the problem of attenuation of the tension caused by the lengthening of the fabric, can more stably complete the tentering processing operation, and solves the problem that in the prior art, the positions of two sets of clamping blocks remain fixed in the tentering operation, the fabric is deformed and elongated to a certain extent under the continuous action of tension, the transverse stretching force applied by the clamping blocks to the fabric is gradually weakened, and the fabric cannot continuously obtain constant tension in the whole tentering cycle.

Description

Technical Field

[0001] This invention relates to the field of tenter equipment technology, and more particularly to a tenter equipment for fabric processing. Background Technology

[0002] Fabrics are flexible sheet materials made from fibers through spinning, weaving, or non-woven processes. They are widely used in clothing, home textiles, and industrial applications. Their morphological stability and appearance flatness directly affect product quality. During fabric processing, after weaving, dyeing, and other processes, fibers may shrink and deform due to uneven stress, leading to inconsistent fabric width, wrinkles, or weft skew. This can prevent the fabric from meeting the requirements of subsequent cutting and sewing. Therefore, a stretching operation is needed. By using a stretching device to apply appropriate lateral tension to the fabric, its width is stretched to the set standard. This effectively eliminates internal stress in the fabric, ensures uniform and stable width, improves fabric flatness, and provides compliant semi-finished fabric products for subsequent processing. It is a key processing step to ensure the quality of the final fabric product.

[0003] The core working principle of existing fabric stretching devices is to use two sets of symmetrically arranged clamps to firmly hold the two sides of the fabric, and then stretch the fabric laterally to the preset width to complete the stretching process. During this process, the positions of the two sets of clamps are usually kept fixed. However, as a flexible fiber assembly, the fabric will deform and elongate to a certain extent under continuous tension. As the stretching operation continues, the length change of the fabric itself due to deformation will cause the originally taut fabric to gradually loosen, which will cause the lateral tensile force applied by the clamps to the fabric to gradually weaken. This phenomenon directly causes the fabric to be unable to obtain a constant tension throughout the entire stretching cycle, which will eventually make it difficult for the actual width, flatness and other parameters of the fabric to meet the standards required by the production process, affecting the quality of subsequent processing, with poor stability and low practicality. Summary of the Invention

[0004] This invention relates to a stretching device for fabric processing, which has a constant force component. The base component is clamped and connected to both ends of the fabric, thereby obtaining a stretching force through the constant force component to realize the stretching processing operation of the fabric. The stretching force provided by the constant force component to the fabric has an adaptive adjustment function, which can compensate for tension changes in real time and ensure that the fabric is always subjected to a constant stretching force throughout the entire stretching cycle. This effectively avoids the problem of tension attenuation due to fabric lengthening, and can complete the stretching processing operation more stably. At the same time, the stretching force value can be freely adjusted to adapt to the stretching processing operation of different types and specifications of fabrics, and has extremely high flexibility, stability, adaptability and practicality.

[0005] The present invention provides a stretching device for fabric processing, specifically including: a base assembly, the base assembly including a mounting base and a fixing clamp, the fixing clamp being fixedly mounted on the top of the mounting base; and a constant force assembly, the constant force assembly being composed of a moving mechanism and an adapting mechanism;

[0006] The moving mechanism includes a moving base, a drive motor, and a displacement screw. The moving base is inserted into the interior of the mounting base, and the drive motor is fixedly mounted on the side of the moving base. The displacement screw is rotatably connected to the interior of the moving base, and the shaft of the drive motor is connected to one end of the displacement screw. The adapting mechanism includes a follower base, an adapting base, a positioning base, a pilot rod, and a positioning plate. The follower base is inserted into the interior of the moving base, and the adapting base is inserted into the interior of the follower base. The positioning base is inserted into the interior of the adapting base, and the pilot rod is inserted into the interior of the follower base. The tail end of the pilot rod is provided with a positioning screw, and the positioning plate is screwed onto the outside of the positioning screw by threads.

[0007] The base assembly also includes a follower clamp, which is fixedly installed on the side of the tension rod.

[0008] Furthermore, the positioning disk is provided with a force-applying top spring on its side, and the two ends of the force-applying top spring abut against the side of the positioning disk and the side of the follower seat, respectively.

[0009] Furthermore, the moving mechanism also includes an electric push rod, which is fixedly installed on the side of the moving seat, and a reset block is provided on the side of the moving seat, with one end of the electric push rod abutting against the side of the reset block.

[0010] Furthermore, the moving mechanism also includes a one-way damping rod, with its two ends fixedly connected to the inside of the moving seat and the side of the follower seat, respectively. The one-way damping rod has a damping force when it contracts, and the moving seat is provided with an adaptive tension spring inside, with its two ends fixedly connected to the side of the moving seat and the side of the follower seat, respectively.

[0011] Furthermore, the interior of the adapting seat is provided with an adapting groove, and the side of the tension rod is provided with an adapting rod, which is inserted into the interior of the adapting groove.

[0012] Furthermore, the adaptation groove consists of an inclined follow-up trigger groove and a horizontally arranged tension holding groove, with the top of the follow-up trigger groove connected to one end of the tension holding groove.

[0013] Furthermore, the top of the positioning seat is provided with an avoidance top spring, and the two ends of the avoidance top spring abut against the top of the positioning seat and the interior of the adaptation seat, respectively.

[0014] Furthermore, the bottom of the positioning seat is provided with a positioning block, and the interior of the movable seat is provided with a positioning slot. The cross-section of the slot and the cross-section of the block are both right-angled triangles. When the follower seat moves inside the movable seat in a direction away from the fixed fixture, the straight edges of the positioning slot and the block engage with each other.

[0015] Furthermore, when the adapting rod is located inside the tension holding groove, the positioning block is inserted into the positioning slot; when the adapting rod is located at the bottom of the follow-up trigger groove, the positioning block disengages from the positioning slot.

[0016] Furthermore, the elastic force of the adaptive tension spring is greater than that of the applied top spring.

[0017] This invention provides a stretching device for fabric processing, which has the following advantages:

[0018] The base assembly clamps and connects to both ends of the fabric, thereby obtaining the stretching force through the constant force component to realize the stretching processing operation of the fabric. The stretching force provided by the constant force component to the fabric has an adaptive adjustment function, which can compensate for tension changes in real time and ensure that the fabric is always subjected to a constant stretching force throughout the entire stretching cycle. This effectively avoids the problem of tension attenuation due to fabric lengthening, and can complete the stretching processing operation more stably. At the same time, the stretching force value can be freely adjusted to adapt to the stretching processing operation of different types and specifications of fabrics, improving the flexibility, adaptability, stability and practicality of the device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0020] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0021] In the attached diagram:

[0022] Figure 1 A schematic diagram of the structure of the present invention is shown.

[0023] Figure 2 A schematic diagram of the internal structure of the present invention is shown.

[0024] Figure 3 The present invention is shown. Figure 2 Enlarged structural diagram of part A in the middle.

[0025] Figure 4 A schematic diagram of the disassembled moving mechanism of the present invention is shown.

[0026] Figure 5 A schematic diagram of the disassembled adaptation mechanism of the present invention is shown.

[0027] Figure 6 This diagram illustrates the internal structure of the fabric during the stretching process according to the present invention.

[0028] Figure 7 The present invention is shown. Figure 6 Enlarged structural diagram of part B in the middle.

[0029] Figure 8 The present invention is shown. Figure 6 A schematic diagram of the internal structure when the adaptive adjustment function of the tension force is triggered.

[0030] Figure 9 The present invention is shown. Figure 8 Enlarged structural diagram of part C in the middle.

[0031] Figure 10 The present invention is shown. Figure 8 A schematic diagram of the internal structure after the adaptive adjustment function of tension force is triggered once.

[0032] List of reference numerals

[0033] 1. Base assembly; 101. Mounting base; 102. Fixing clamp; 103. Follower clamp;

[0034] 2. Moving mechanism; 201. Moving seat; 2011. Adaptive tension spring; 2012. Positioning slot; 202. Drive motor; 203. Displacement screw; 204. Electric push rod; 205. One-way damping rod;

[0035] 3. Adaptation mechanism; 301. Follower seat; 3011. Reset block; 302. Adaptation seat; 3021. Follower trigger groove; 3022. Tension holding groove; 303. Positioning seat; 3031. Avoidance top spring; 3032. Positioning block; 304. Tension rod; 3041. Adaptation rod; 3042. Positioning screw; 305. Positioning plate; 3051. Force application top spring. Detailed Implementation

[0036] 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, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please refer to Figures 1 to 10 Example 1:

[0038] The present invention proposes a stretching device for fabric processing, comprising: a base assembly 1, the base assembly 1 including a mounting base 101 and a fixing clamp 102, the fixing clamp 102 being fixedly mounted on the top of the mounting base 101; and a constant force assembly, the constant force assembly being composed of a moving mechanism 2 and an adapting mechanism 3.

[0039] The moving mechanism 2 includes a moving base 201, a drive motor 202, and a displacement screw 203. The moving base 201 is inserted into the mounting base 101, and the drive motor 202 is fixedly installed on the side of the moving base 201. The displacement screw 203 is rotatably connected to the inside of the moving base 201, and the shaft of the drive motor 202 is connected to one end of the displacement screw 203. The adapting mechanism 3 includes a follower base 301, an adapting base 302, a positioning base 303, a tension rod 304, and a positioning plate 305. The follower base 301 is inserted into the inside of the moving base 201, and the adapting base 302 is inserted into the inside of the follower base 301. The positioning base 303 is inserted into the inside of the adapting base 302, and the tension rod 304 is inserted into the inside of the follower base 301. The tail end of the tension rod 304 is provided with a positioning screw 3042, and the positioning plate 305 is screwed onto the outside of the positioning screw 3042 by threads.

[0040] The base assembly 1 also includes a follower clamp 103, which is fixedly installed on the side of the tension rod 304;

[0041] The moving mechanism 2 also includes an electric push rod 204, which is fixedly installed on the side of the moving seat 201. The side of the follower seat 301 is provided with a reset block 3011, and one end of the push rod of the electric push rod 204 abuts against the side of the reset block 3011.

[0042] The moving mechanism 2 also includes a one-way damping rod 205, with both ends of the one-way damping rod 205 fixedly connected to the inside of the moving seat 201 and the side of the follower seat 301, respectively. The one-way damping rod 205 provides damping force during retraction. The moving seat 201 has an adaptive tension spring 2011 inside, with both ends of the adaptive tension spring 2011 fixedly connected to the side of the moving seat 201 and the side of the follower seat 301, respectively. The design of the one-way damping rod 205 ensures that when the adaptive tension adjustment function is triggered, the follower seat 301 will not experience an impact action due to the action of the adaptive tension spring 2011, but rather the one-way damping rod 205 will provide resistance. Under the action of the mechanism, the device moves slowly to avoid damage due to impact, ensuring the smooth and stable operation of the adaptive tension adjustment function. At the same time, the tension value of the fabric can be controlled by rotating the positioning plate 305. When rotating, the positioning plate 305 can change its position by moving axially outside the positioning screw 3042 through the thread. The change in the position of the positioning plate 305 changes the initial extension length of the force-applying top spring 3051, which in turn provides the tension value to the fabric during the tensioning process. The adjustment is convenient and flexible, and it can adapt to the tensioning process of fabrics of different specifications, types and materials, making it highly adaptable.

[0043] For ease of description, the side of the mounting base 101 on which the fixing clamp 102 is mounted will be referred to as the left side, and the other side of the mounting base 101 will be referred to as the right side.

[0044] The positioning plate 305 has a force-applying top spring 3051 on its side, with both ends of the top spring 3051 abutting against the side of the positioning plate 305 and the side of the follower seat 301, respectively. In use, the fixing clamp 102 and the follower clamp 103 can clamp and connect with both ends of the fabric. Thus, the follower clamp 103 can perform fabric stretching processing when moving with the constant force component. The drive motor 202 moves the moving seat 201 to a suitable position. When the drive motor 202 rotates, it drives the displacement screw 203 to rotate. When the displacement screw 203 rotates, it drives the moving seat 201 inside the mounting base 101 via the screw thread. The moving seat 201 is moved to a suitable position according to the actual length of the fabric. In the initial testing phase, the constant force component needs to be... To perform a reset operation, the electric push rod 204 is extended, causing its push rod to abut against the side of the reset block 3011. When the electric push rod 204 extends, it can drive the follower seat 301 to move to the leftmost side of the moving seat 201 via the reset block 3011. At this time, the one-way damping rod 205 is in an extended state, and the adapting tension spring 2011 is in a stretched state. Meanwhile, since the follower clamp 103 is not clamping the connected fabric at this time, the adapting seat 302 is lifted under the action of the force-applying top spring 3051. Thus, the positioning block 3032 and the positioning slot 2012 are separated from each other and will not hinder the movement of the follower seat 301. After the constant force component is reset, the stretching processing operation of the fabric can begin.

[0045] The adapting seat 302 has an adapting groove inside, and the tension rod 304 has an adapting rod 3041 on its side. The adapting rod 3041 is inserted into the adapting groove. The adapting groove consists of an inclined follow-up trigger groove 3021 and a horizontally arranged tension holding groove 3022. The top of the follow-up trigger groove 3021 is connected to one end of the tension holding groove 3022. The bottom of the positioning seat 303 has a positioning block 3032, and the moving seat 201 has a positioning slot 2012 inside. The cross-section of the slot 2012 and the cross-section of the positioning block 3032 are both right-angled triangles. When the follower seat 301 moves inside the moving seat 201 in a direction away from the fixed clamp 102, The straight edges of the positioning slot 2012 and the positioning block 3032 are interlocked. When the adapting rod 3041 is inside the stretching holding groove 3022, the positioning block 3032 is inserted into the positioning slot 2012. When the adapting rod 3041 is at the bottom of the follow-up trigger groove 3021, the positioning block 3032 disengages from the positioning slot 2012. In use, when stretching the fabric, both ends of the fabric are clamped and connected to the fixed clamp 102 and the follow-up clamp 103 respectively. Then, when the drive motor 202 drives the moving seat 201 to move to the right, the fabric is subjected to tension. After the fabric is stretched and deformed, it can change its actual length. The fabric's tension and other properties effectively limit the movement range of the follower clamp 103. Therefore, when the moving seat 201 moves, the follower clamp 103, due to the tension of the fabric itself, cannot move synchronously with the moving seat 201 and follower seat 301. Consequently, the moving seat 201 and follower seat 301 move independently of the stretcher rod 304, compressing the force-applying top spring 3051 and providing continuous stretching force to the fabric. Simultaneously, when relative movement occurs between the stretcher rod 304 and the follower seat 301, the adapting rod 3041 can enter the stretching holding groove 3022 from the follower trigger groove 3021. The inclined follower trigger... Under the guidance of the adapting rod 3041 of the slot 3021, the adapting seat 302 will move downward. When the adapting seat 302 moves downward, it will insert the positioning block 3032 of the positioning seat 303 into the interior of the positioning slot 2012. Then, the electric push rod 204 is controlled to retract, releasing the contact between the electric push rod 204 and the reset block 3011. At this time, under the snapping action of the straight edge between the positioning slot 2012 and the positioning block 3032, the follower seat 301 will not move to the right due to the action of the adapting tension spring 2011, but will remain stably in the current position for use. This provides support and guarantee for the adaptive adjustment function of the constant force component triggering the tension force, making it convenient and flexible to use.

[0046] Among them, the elastic force of the tension spring 2011 is greater than that of the force-applying top spring 3051. During use, the constant force component can compensate for tension changes in real time during the fabric stretching process, ensuring that the fabric is always subjected to a constant stretching force throughout the entire stretching cycle. This effectively avoids the problem of tension attenuation due to fabric lengthening, enabling more stable stretching operations. During the fabric stretching process, the fabric will deform (lengthen) to a certain extent after being stretched. When the fabric lengthens, the force-applying top spring 3051 first extends to compensate for the fabric deformation, keeping the fabric in a taut and straight state, avoiding loosening. Furthermore, the stretching rod 304 will adjust its tension according to the fabric lengthening and the force applied... The extension of the force spring 3051 causes it to move to the right, meaning the adapting rod 3041 moves inside the adapting groove until it reaches the bottom of the follow-up trigger groove 3021 due to the increased fabric length. This triggers a tension force adaptive adjustment function. When the tension force adaptive adjustment function is triggered, the adapting rod 3041 moves from inside the tension holding groove 3022 to the bottom of the follow-up trigger groove 3021. Under the guiding action of the follow-up trigger groove 3021 on the adapting rod 3041, the adapting seat 302 is lifted, thereby lifting the positioning seat 303 and causing the positioning block 3032 to disengage from the positioning slot 2012. This results in the adapting mechanism 3 obtaining the desired tension force through the positioning block 3032. The internal positioning function of the movable seat 201 fails. Subsequently, under the action of the adapting tension spring 2011, the adapting mechanism 3 will move to the right inside the movable seat 201, thereby straightening and tightening the fabric again. Since the adapting tension spring 2011 has a greater elastic force than the force-applying top spring 3051, when the adapting mechanism 3 moves to the right, after the fabric is straightened and tightened again, it will restrict the movement range of the tenter rod 304 again, preventing the tenter rod 304 from continuing to follow the follower seat 301. Afterwards, when the follower seat 301 moves independently, the force-applying top spring 3051 is compressed again to provide tension force for the fabric, and the adapting rod 3041 will re-enter the interior of the follower trigger groove 3021 from the tenter holding groove 3022, causing the positioning block 30 32 is inserted into the positioning slot 2012 at the corresponding position, and the follower seat 301 is repositioned in the use position inside the moving seat 201. The tensioning force is limited to the corresponding range again to avoid the fabric from losing tension due to lengthening. If the fabric continues to be stretched, the tensioning force adaptive adjustment function will be continuously triggered. The fabric tensioning process is stable and efficient. The maximum movement distance of the follower seat 301 inside the moving seat 201 during the tensioning process can be limited by the extension length of the electric push rod 204. This avoids the phenomenon of the fabric being overstretched due to the continuous triggering of the tensioning force adaptive adjustment function. It can be adjusted as needed, is flexible and convenient to use, and the tensioning process is stable and efficient.

[0047] The positioning seat 303 is equipped with a relief spring 3031 on its top, with both ends of the relief spring 3031 abutting against the top of the positioning seat 303 and the interior of the adaptation seat 302, respectively. In use, the relief spring 3031 ensures that when the adaptive tension adjustment function is triggered, if the positioning block 3032 does not accurately match the corresponding positioning slot 2012 when it moves down, the positioning seat 303 will retract and hide into the adaptation seat 302 and compress the relief spring 3031 to avoid the movement of the follower seat 301 during adaptive adjustment. Subsequently, as the follower seat 301 moves, when the positioning block 3032 matches the sequential positioning slot 2012, under the action of the relief spring 3031, the positioning block 3032 will automatically insert into the interior of the positioning slot 2012 to provide support for the follower seat 301, thus preventing the device from slipping or jamming, which would cause the adaptive tension adjustment function to fail and ensure stable use.

[0048] The specific usage and function of this embodiment: In this invention, the fixed clamp 102 and the follower clamp 103 can be connected to the two ends of the fabric for clamping. Thus, the follower clamp 103 can perform fabric stretching processing when moving with the constant force component. The drive motor 202 moves the moving seat 201 to a suitable position. When the drive motor 202 rotates, it drives the displacement screw 203 to rotate. When the displacement screw 203 rotates, it drives the moving seat 201 inside the mounting base 101 through the screw thread. The moving seat 201 can be moved to a suitable position according to the actual length of the fabric. In the initial testing phase, the constant force component needs to be reset. This is achieved by controlling the extension of the electric push rod 204, causing the push rod of the electric push rod 204 to abut against... When the electric push rod 204 extends, it can drive the follower seat 301 to move to the leftmost side of the moving seat 201 via the reset block 3011. At this time, the one-way damping rod 205 is in the extended state, and the adapting tension spring 2011 is in the stretched state. At the same time, since the follower clamp 103 is not clamped to the outside of the follower, the adapting seat 302 is lifted under the action of the force-applying top spring 3051. Thus, the positioning block 3032 and the positioning slot 2012 are separated from each other and will not hinder the movement of the follower seat 301. After the constant force component is reset, the stretching processing of the fabric can begin. When stretching the fabric, the two ends of the fabric are clamped and connected to the fixed... Inside the fixed clamp 102 and the follower clamp 103, when the moving seat 201 is moved to the right by the drive motor 202, the fabric is subjected to tension. After the fabric is stretched and deformed, it can effectively limit the movement range of the follower clamp 103 by its actual length change and tension state. Therefore, when the moving seat 201 moves, due to the tension of the fabric itself, the follower clamp 103 and the tension rod 304 cannot move synchronously with the moving seat 201 and the follower seat 301. As a result, the moving seat 201 and the follower seat 301 will move independently of the tension rod 304, and the force-applying top spring 3051 will be compressed, providing a continuous tension force for the fabric. At the same time, there is a tension between the tension rod 304 and the follower seat 301. When a relative movement occurs, the adapting rod 3041 can enter the interior of the tension holding groove 3022 from the follower trigger groove 3021. Under the guiding action of the inclined follower trigger groove 3021 on the adapting rod 3041, the adapting seat 302 will move downward. When the adapting seat 302 moves downward, it will insert the positioning block 3032 of the positioning seat 303 into the interior of the positioning slot 2012. After that, the electric push rod 204 is controlled to retract, releasing the contact relationship between the electric push rod 204 and the reset block 3011. At this time, under the locking action of the straight edge between the positioning slot 2012 and the positioning block 3032, the follower seat 301 will not move to the right due to the action of the adapting tension spring 2011, but will be stably maintained in the current position for use.This provides support for the adaptive adjustment function of the tensioning force triggered by the constant force component. During the tensioning process of the fabric, the constant force component can compensate for tension changes in real time, ensuring that the fabric is always subjected to a constant tensioning force throughout the entire tensioning cycle. This effectively avoids the problem of tension attenuation due to fabric lengthening, and enables more stable tensioning operations. During the tensioning process, the fabric will deform (lengthen) to a certain extent after being stretched. When the fabric lengthens, the force-applying top spring 3051 first extends to compensate for the deformation of the fabric, keeping the fabric in a taut and straight state and avoiding loosening. Furthermore, the tensioning rod 304 will move to the right due to the elongation of the fabric and the extension of the force-applying top spring 3051, i.e., the adaptation rod. 3041 will move inside the adaptation groove until the adaptation rod 3041 moves to the bottom of the follow-up trigger groove 3021 due to the elongation of the fabric. At this time, the tension force adaptive adjustment function will be triggered. When the tension force adaptive adjustment function is triggered, since the adaptation rod 3041 moves from inside the tension holding groove 3022 to the bottom of the follow-up trigger groove 3021, the adaptation seat 302 will be lifted under the guiding action of the follow-up trigger groove 3021 on the adaptation rod 3041. As a result, the positioning seat 303 will also be lifted, causing the positioning block 3032 to disengage from the inside of the positioning slot 2012. This causes the positioning function obtained by the adaptation mechanism 3 through the positioning block 3032 within the moving seat 201 to fail. Afterwards, under the action of the adaptation tension spring 2011, the adaptation... Mechanism 3 moves to the right inside the movable seat 201, thereby straightening and tightening the fabric again. Since the adapting tension spring 2011 has a greater elastic force than the force-applying top spring 3051, when the adapting mechanism 3 moves to the right, after the fabric is straightened and tightened again, it will again restrict the movement range of the tenter rod 304, preventing the tenter rod 304 from continuing to follow the follower seat 301. Afterwards, when the follower seat 301 moves independently, the force-applying top spring 3051 is compressed again to provide tension to the fabric, and the adapting rod 3041 will re-enter from the tenter holding groove 3022 into the follower trigger groove 3021, causing the positioning block 3032 to insert into the corresponding positioning slot 2012, thus repositioning the follower seat 301 within the movable seat 201. The tensioning force is then limited back to the appropriate range to prevent the tension from decreasing due to fabric elongation. If the fabric continues to be stretched, the adaptive tensioning force adjustment function will be continuously triggered, ensuring stable and efficient fabric stretching. The telescopic length of the electric push rod 204 can limit the maximum movement distance of the follower seat 301 within the moving seat 201 during the stretching operation, thus preventing the fabric from being overstretched due to continuous triggering of the adaptive tensioning force adjustment function. It can be adjusted as needed. The design of the one-way damping rod 205 ensures that when the adaptive tensioning force adjustment function is triggered, the follower seat 301 will not experience impact due to the action of the tension spring 2011, but will move slowly under the action of the one-way damping rod 205.To prevent damage to the device due to impact, and to ensure the smooth and stable operation of the adaptive tension adjustment function, the positioning plate 305 can be rotated to control the fabric tension value. When rotating, the positioning plate 305 can change its position by moving axially outside the positioning screw 3042 via a thread. This change in the position of the positioning plate 305 alters the initial extension length of the force-applying spring 3051, thus affecting the tension value provided to the fabric during tensioning. When the adaptive tension adjustment function is triggered, if the positioning block 3032 does not accurately match the downward movement... When the corresponding positioning slot 2012 is engaged, the positioning seat 303 will retract and hide inside the adaptation seat 302, compressing and avoiding the top spring 3031. This first avoids the movement of the follower seat 301 during adaptive adjustment. Subsequently, as the follower seat 301 moves, when the positioning block 3032 matches the sequential positioning slot 2012, under the action of the top spring 3031, the positioning block 3032 will automatically insert into the positioning slot 2012 to provide support for the follower seat 301, preventing slippage, jamming, or other phenomena that could cause the adaptive tension adjustment function to fail.

Claims

1. A fabric stretching device, comprising: The base assembly (1) includes a mounting base (101) and a fixing clamp (102), the fixing clamp (102) being fixedly mounted on the top of the mounting base (101); characterized in that it further includes a constant force assembly, the constant force assembly being composed of a moving mechanism (2) and an adapting mechanism (3); The moving mechanism (2) includes a moving base (201), a drive motor (202), and a displacement screw (203). The moving base (201) is inserted into the interior of the mounting base (101), and the drive motor (202) is fixedly mounted on the side of the moving base (201). The displacement screw (203) is rotatably connected to the interior of the moving base (201), and the shaft of the drive motor (202) is connected to one end of the displacement screw (203). The adapting mechanism (3) includes a follower base (301) and an adapting base (302). The system comprises a positioning seat (303), a pilot rod (304), and a positioning disk (305). The follower seat (301) is inserted into the interior of the moving seat (201), and the adaptation seat (302) is inserted into the interior of the follower seat (301). The positioning seat (303) is inserted into the interior of the adaptation seat (302), and the pilot rod (304) is inserted into the interior of the follower seat (301). The tail end of the pilot rod (304) is provided with a positioning screw (3042), and the positioning disk (305) is screwed onto the outside of the positioning screw (3042) by threads. The base assembly (1) also includes a follower clamp (103), which is fixedly installed on the side of the tension rod (304); The positioning disk (305) is provided with a force-applying top spring (3051) on its side, and the two ends of the force-applying top spring (3051) abut against the side of the positioning disk (305) and the side of the follower seat (301) respectively. The moving mechanism (2) also includes a one-way damping rod (205), and the two ends of the one-way damping rod (205) are respectively fixedly connected to the inside of the moving seat (201) and the side of the follower seat (301). The one-way damping rod (205) has a damping force when it retracts. The moving seat (201) is provided with an adaptation spring (2011) inside, and the two ends of the adaptation spring (2011) are respectively fixedly connected to the side of the moving seat (201) and the side of the follower seat (301). The elastic force of the adaptive tension spring (2011) is greater than that of the force-applying top spring (3051).

2. The fabric stretching device according to claim 1, characterized in that, The moving mechanism (2) also includes an electric push rod (204), which is fixedly installed on the side of the moving seat (201), and the side of the follower seat (301) is provided with a reset block (3011), and one end of the push rod of the electric push rod (204) abuts against the side of the reset block (3011).

3. The fabric stretching device according to claim 2, characterized in that, The adaptation seat (302) has an adaptation groove inside, and the side of the tension rod (304) has an adaptation rod (3041), which is inserted into the adaptation groove.

4. The fabric stretching device according to claim 3, characterized in that, The adaptation groove consists of an inclined follow-up trigger groove (3021) and a horizontally arranged tension holding groove (3022), with the top of the follow-up trigger groove (3021) and one end of the tension holding groove (3022) connected.

5. A fabric stretching device according to claim 4, characterized in that, The top of the positioning seat (303) is provided with a relief spring (3031), and the two ends of the relief spring (3031) abut against the top of the positioning seat (303) and the interior of the adaptation seat (302), respectively.

6. A fabric stretching device according to claim 5, characterized in that, The bottom of the positioning seat (303) is provided with a positioning block (3032), and the interior of the moving seat (201) is provided with a positioning slot (2012). The cross-section of the slot (2012) and the cross-section of the block (3032) are both right triangles. When the follower seat (301) moves in the interior of the moving seat (201) toward the direction away from the fixed clamp (102), the straight edges of the positioning slot (2012) and the positioning block (3032) engage with each other.

7. A fabric stretching device according to claim 6, characterized in that, When the adapting rod (3041) is located inside the tension holding groove (3022), the positioning block (3032) is inserted into the positioning slot (2012). When the adapting rod (3041) is located at the bottom of the follow-up trigger groove (3021), the positioning block (3032) is dislodged from the positioning slot (2012).

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