An automatic tension detection control system for a stretcher
By introducing a tension mechanism rotary cylinder and a rodless cylinder mounting plate into the tensioning machine, combined with multi-point tension detection and rotation adjustment, the problems of cumbersome operation and incomplete detection of the tension detection system of the tensioning machine are solved, achieving efficient and accurate tension detection and improving product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- YINGMAI INTELLIGENT EQUIPMENT LANGFANG CO LTD
- Filing Date
- 2026-03-09
- Publication Date
- 2026-05-29
AI Technical Summary
Existing tension detection and control systems for screen stretching machines rely on manual adjustment, which is cumbersome and cannot meet the requirements for efficient multi-point tension detection. Furthermore, traditional systems cannot capture minute tension changes in the screen fabric during high-speed movement in real time, resulting in uneven tension and affecting printing and filtration quality.
The system employs a tension mechanism rotary cylinder, a rodless cylinder mounting plate, and a tension detection component. By combining multi-point detection and rotation adjustment, it achieves comprehensive and accurate detection of the tension of the net stretching machine. The tension gauge body detects in multiple directions, eliminating errors caused by a single detection direction. The system is securely fixed using a self-locking motor and rubber toothed plates.
It achieves multi-point, full-coverage, and high-precision tension detection for the net stretching machine, ensuring comprehensive detection and ease of operation, improving product quality and pass rate, and reducing the defect rate caused by uneven tension.
Smart Images
Figure CN122108419A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of tension detection technology for net stretching machines, and particularly to an automatic tension detection and control system for net stretching machines. Background Technology
[0002] In traditional screen stretching machine operations, precise control of screen tension is the core element in ensuring the quality of printing, filtration, or composite material processing. However, existing technologies mostly rely on manual experience for adjustment or mechanical sensor detection, which has drawbacks such as large tension fluctuations, slow response, and poor dynamic adaptability. Manual adjustment is easily affected by the skill level of the operator, making it difficult to achieve standardized production. Mechanical sensors are limited by contact detection methods, and their accuracy is prone to decline due to wear after long-term use. They also cannot capture minute tension changes of the screen in real time during high-speed movement. Especially in multi-axis synchronous screen stretching or irregularly shaped screen frame processing scenarios, traditional systems lack intelligent algorithm support, making it difficult to coordinate the tension balance of each axis. This leads to partial slack or overstretching of the screen, which in turn causes quality problems such as misaligned printing patterns and filtration accuracy deviations. This has become a key technical bottleneck restricting the automation upgrade of industries such as high-end screen printing and precision filtration. Existing tension detection and control systems for screen stretching machines typically only set detection points at fixed locations (such as the center of the screen frame or one side). However, uneven tension distribution is a common phenomenon during the stretching process, making it impossible to comprehensively detect the tension of the screen surface. This results in uneven tension in other areas of the screen surface being difficult to detect and correct in a timely manner, leading to a large number of screen printed products becoming defective. Furthermore, existing detection systems are inconvenient to control and adjust during use, usually requiring manual operation. This process relies on the operator's experience and is slow, making it difficult to cope with rapidly changing tension requirements. Therefore, corresponding improvements are needed. Summary of the Invention
[0003] The purpose of this invention is to provide an automatic tension detection and control system for a net stretching machine, so as to solve the problem mentioned in the background art that the existing tension detection and control systems for net stretching machines are cumbersome to operate, rely on manual intervention, and cannot meet the problem of efficient multi-point tension detection of net stretching machines.
[0004] To achieve the above objectives, the present invention provides the following technical solution: an automatic tension detection and control system for a net stretching machine, comprising a tension mechanism rotary cylinder and a rodless cylinder mounting plate, wherein one end of the tension mechanism rotary cylinder is provided with a rodless cylinder mounting plate; an adjusting frame is fixed on one side of the rodless cylinder mounting plate, and a horizontally driven rodless cylinder body is provided on one side inside the adjusting frame; one end of the rodless cylinder body is connected to a horizontally movable seat, and both sides of the movable seat are provided with horizontally limiting guide columns; a lifting cylinder mounting plate is fixedly connected to the top of the movable seat, and a tension detection component is connected to the bottom end of the lifting cylinder mounting plate; The bottom of the rotating cylinder of the tension mechanism is connected to a rodless cylinder mounting plate. A fixed clamping frame is welded to one side of the bottom end of the rodless cylinder mounting plate, and a fixing component is set inside the fixed clamping frame. The fixing component fixes the bottom support platform and the tension detection component to the frame of the tensioning machine.
[0005] Furthermore, the fixing component includes a self-locking motor connected to the back of the fixing frame, and the self-locking motor is supported by a support plate. The output shaft of the self-locking motor is connected to a motor shaft, and one end of the motor shaft passes through the fixing frame and is connected to a power gear. Both sides of the power gear are meshed with movable racks, and when the power gear rotates, the movable racks on both sides move vertically up and down.
[0006] Furthermore, each of the movable racks has a fixed bracket attached to one outer end, and both sides of the fixed bracket are threaded with fixing bolts. One end of each fixing bolt extends into the interior of the movable rack for detachable assembly of the fixed bracket.
[0007] Furthermore, each of the fixed card seats is fixed with a fixed clamping plate on one side. The two fixed clamping plates move towards each other and fit against the frame of the net stretching machine. Each of the fixed clamping plates is fixed with a rubber toothed plate on one side. The contact surface between the rubber toothed plate and the net stretching machine is serrated, which improves the stability and anti-slip ability of the connection with the net stretching machine frame.
[0008] Furthermore, a limiting block is fixed on one side of the movable rack, and limiting grooves are provided on both sides of the inside of the fixed clamping frame. The limiting blocks slide inside the limiting grooves to limit and guide the longitudinal movement of the movable rack.
[0009] Furthermore, the tension detection assembly includes multiple components connected in sequence. The lifting cylinder body is connected to one side of the lifting cylinder mounting plate. The bottom end of the lifting cylinder body is connected to the rotating cylinder B fixing plate. The bottom end of the rotating cylinder B fixing plate is further connected to the tension meter rotating cylinder, which provides transition support. The bottom of the tension meter rotating cylinder is connected to the tension meter support.
[0010] Furthermore, one end of the tension gauge support is connected to a tension gauge fixing seat, and the tension gauge body is snapped into the tension gauge fixing seat. The tension gauge body is the core detection element of the entire tension detection assembly and is used for tension detection of the net stretching machine.
[0011] Furthermore, the fixed clamping frame has through holes on both sides of its bottom, and the cross-section of each through hole is rectangular. The cross-sectional area of the through hole is larger than the cross-sectional area of the movable rack, allowing the movable rack to move longitudinally within the through hole.
[0012] Furthermore, the rodless cylinder mounting plate is made of stainless steel, and it is connected to the rotating end of the tension mechanism rotary cylinder by bolts. Compared with the prior art, the beneficial effects of the present invention are: the automatic tension detection and control system for the net stretching machine can effectively detect the tension of the net stretching machine at multiple points, ensuring the comprehensiveness and accuracy of the detection, and the overall assembly is convenient, enabling multi-position assembly and improving the flexibility of use. For medium-sized screens, the "five-point method" is used, which involves the center point plus four corner points for tension detection. This means placing the tension meter body perpendicular to the screen surface, driving the lifting cylinder to push the rotating cylinder B fixed plate, tension meter support, tension meter mounting base, and tension meter body downwards. This ensures the probe of the tension meter body is in complete contact with the screen and avoids tilting. Then, the measurement button on the tension meter body is operated to perform tension detection. The operation is convenient. During this process, the rotating cylinder can rotate the tension meter support and body, allowing for tension detection from multiple directions. Data processing and analysis then eliminate errors caused by a single detection direction, resulting in more accurate tension values and ensuring the precision of the detection. By using a rodless cylinder to push the lifting cylinder mounting plate laterally and using guide columns for limiting and guiding, the tension gauge body can move laterally synchronously to adjust the detection point. In conjunction with the tension mechanism's rotating cylinder, the rodless cylinder mounting plate and the entire detection system rotate, allowing the detection probe on the tension gauge body to detect across the entire plane of the wire mesh, rather than being limited to a fixed area or direction. This provides a comprehensive understanding of the tension distribution of the wire mesh at different locations. The tension gauge body can detect from multiple directions, eliminating errors caused by a single detection direction, more accurately reflecting the actual tension state of the wire mesh, and promptly identifying areas of uneven tension. This provides a more comprehensive basis for subsequent tension adjustments, ensuring that the wire mesh tension meets the production standards of specific products, and improving product quality and pass rate. Two fixed clamping plates are clamped onto the frame of the wire mesh stretching machine. Then, the self-locking motor is driven to rotate the motor shaft, causing the power gear to rotate. The power gear meshes with the two movable racks, causing the two movable racks to move towards each other and drive the corresponding two fixed clamping plates to move synchronously until the rubber toothed plates on the fixed clamping plates are in contact with the frame of the wire mesh stretching machine. Then, the longitudinal clamping of the two rubber toothed plates is used to achieve the fixed limit of the entire detection system. The contact surface between the fixed clamping plates and the wire mesh stretching machine is serrated, which has a good anti-slip effect and can improve the fixing effect. Disassembly can be achieved by reversing the operation, making daily maintenance and upkeep more convenient. The detection system can be installed at any of the four corners of the wire mesh stretching machine to perform full-coverage detection, obtain more comprehensive tension data, avoid missing important information due to a single detection position, and thus more accurately reflect the tension status of the entire wire mesh. The fixed clamping plate is secured to the end of the movable rack by a U-shaped fixed bracket and fixed with a fixing bolt, thus achieving a stable assembly of the fixed clamping plate. It can be disassembled by reversing the operation later, realizing modular assembly for future inspection and maintenance. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial three-dimensional structural diagram of the present invention; Figure 3 This is a partial three-dimensional structural diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the fixing component of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of the three-dimensional structure of the fixed clamping frame of the present invention; Figure 7 This is a three-dimensional structural diagram of the fixing clamping plate and the rubber toothed plate of the present invention; Figure 8 This is a three-dimensional structural diagram of the movable rack and limiting block of the present invention.
[0015] The following are the annotations in the figure: 101, Tension mechanism rotary cylinder; 102, Rodless cylinder mounting plate; 103, Rodless cylinder body; 104, Lifting cylinder mounting plate; 105, Lifting cylinder body; 106, Rotary cylinder B fixing plate; 107, Tension gauge rotary cylinder; 108, Tension gauge support; 109, Tension gauge fixing seat; 110, Tension gauge body; 111, Adjusting frame; 2, Bottom support platform; 3, Fixed clamping frame; 301, Through hole; 4, Power gear; 5, Fixed clamping plate; 501, Rubber toothed plate; 6, Guide column; 7, Self-locking motor; 701, Motor shaft; 8, Movable rack; 9, Fixed card seat; 901, Fixing bolt; 10, Limiting groove; 11, Limiting block; 12, Movable seat. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the 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.
[0017] Please see Figures 1-8 The present invention provides the following technical solution: Example 1: To address the problem of unstable tension caused by the lack of tension detection in existing wire mesh stretching machines, which affects the performance of the wire mesh, the following technical solution is disclosed. Please refer to the following for details. Figure 1 , Figure 2 , Figure 3 As shown, an automatic tension detection and control system for a net stretching machine includes a tension mechanism rotary cylinder 101 and a rodless cylinder mounting plate 102. The rodless cylinder mounting plate 102 is mounted on one end of the tension mechanism rotary cylinder 101. The rodless cylinder mounting plate 102 is made of stainless steel and is connected to the rotating end of the tension mechanism rotary cylinder 101 by bolts. An adjusting frame 111 is fixed to one side of the rodless cylinder mounting plate 102, and a laterally driven rodless cylinder body 103 is provided inside the adjusting frame 111. One end of the rodless cylinder body 103 is connected to a laterally movable seat 12, and both sides of the movable seat 12 have laterally limiting guide posts 6. The top of the movable seat 12... A lifting cylinder mounting plate 104 is fixedly connected to the end of the tension detection assembly, and a tension detection component is connected to the bottom end of the lifting cylinder mounting plate 104. The tension detection assembly includes multiple components connected in sequence. The lifting cylinder body 105 is connected to one side of the lifting cylinder mounting plate 104. The bottom end of the lifting cylinder body 105 is connected to a rotating cylinder B fixing plate 106. The bottom end of the rotating cylinder B fixing plate 106 is further connected to a tension meter rotating cylinder 107, which provides transition support. The bottom of the tension meter rotating cylinder 107 is connected to a tension meter support 108. One end of the tension meter support 108 is connected to a tension meter fixing seat 109, and a tension meter body 110 is snapped into the tension meter fixing seat 109. The tension meter body 110 is the core detection element of the entire tension detection assembly and is used for tension detection of the net stretching machine. In this embodiment, a "five-point method" is used for medium-sized screen printing plates, namely, the center point plus four corner points, for tension detection. The tension meter body 110 is placed perpendicular to the screen surface. The lifting cylinder body 105 drives the rotating cylinder B fixing plate 106, tension meter support 108, tension meter fixing base 109, and tension meter body 110 downwards, ensuring that the probe of the tension meter body 110 is in complete contact with the screen and avoiding tilting. Then, the measurement key on the tension meter body 110 is operated to perform tension detection. The operation is convenient. During this process, the rotating cylinder 107 can drive the tension meter support 108 and tension meter body 110 to rotate, enabling tension detection from multiple directions. The data is then processed... By analyzing and eliminating errors caused by a single detection direction, a more accurate tension value is obtained, ensuring the precision of the detection. The rodless cylinder body 103 is driven to move the lifting cylinder mounting plate 104 horizontally, which in turn drives the tension gauge body 110 to move synchronously, thereby adjusting the detection point. For wire mesh with irregular shape or large area, this detection method can avoid detection blind spots, fully understand the tension distribution of the wire mesh at different positions and directions, and drive the tension mechanism rotating cylinder 101 to rotate the rodless cylinder mounting plate 102 and the adjusting frame 111, which in turn drives the tension gauge body 110 to move synchronously, thus adjusting the detection position of the entire mesh and ensuring the comprehensiveness and accuracy of the detection.
[0018] Example 2: This example differs from Example 1. During use, the fixed components allow for convenient assembly and disassembly of the entire detection system, improving its flexibility. The following technical solution is disclosed; please refer to it for details. Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8As shown, the bottom of the tension mechanism rotary cylinder 101 is connected to a rodless cylinder mounting plate 102. A fixed clamping frame 3 is welded to one side of the bottom end of the rodless cylinder mounting plate 102, and a fixing component is provided inside the fixed clamping frame 3. The fixing component fixes the bottom support platform 2 and the tension detection component to the frame of the tensioning machine. The fixing component includes a self-locking motor 7 connected to the back of the fixed clamping frame 3, and the self-locking motor 7 is supported by a support plate. The output shaft end of the self-locking motor 7 is connected to a motor shaft 701, and one end of the motor shaft 701 passes through the fixed clamping frame 3 and is connected to a power gear 4. Movable racks 8 are meshed on both sides of the power gear 4. When the power gear 4 rotates, the movable racks 8 on both sides move vertically up and down. A fixed bracket 9 is snapped into one side of each movable rack 8, and a fixing bolt 901 is threaded onto both sides of the fixed bracket 9. One end of each component extends into the interior of the movable rack 8 for detachable assembly of the fixing bracket 9. A fixing clamping plate 5 is fixed to one side of each fixing bracket 9. The two fixing clamping plates 5 move towards each other and fit against the frame of the stretching machine. A rubber toothed plate 501 is fixed to one side of each fixing clamping plate 5. The contact surface between the rubber toothed plate 501 and the stretching machine is serrated, improving the stability and anti-slip capability of the connection with the stretching machine frame. A limit block 11 is fixed to one side of each movable rack 8. Limit grooves 10 are provided on both sides of the interior of the fixing frame 3. The limit blocks 11 slide within the limit grooves 10, providing longitudinal movement guidance for the movable rack 8. Through holes 301 are provided on both sides of the bottom of the fixing frame 3. The cross-section of the through holes 301 is rectangular, and the cross-sectional area of the through holes 301 is larger than that of the movable rack 8, allowing the movable rack 8 to move longitudinally within the through holes 301. In this embodiment, two fixed clamping plates 5 are clamped onto the frame of the stretching machine. Then, the self-locking motor 7 is driven to rotate the motor shaft 701, causing the power gear 4 to rotate. The power gear 4 meshes with the two movable racks 8, allowing them to move towards each other. This causes the limiting block 11 to slide in the limiting groove 10, providing a guide and limiting the movement of the movable racks 8 and ensuring their stability. During this process, the corresponding two fixed clamping plates 5 move synchronously until the rubber toothed plates 501 on the fixed clamping plates 5 are in contact with the frame of the stretching machine. The longitudinal clamping of the two rubber toothed plates 501 then secures the entire inspection system. The fixed clamping plate 5 has a serrated contact surface with the tensioning machine, providing good anti-slip properties and improving the fixing effect. Disassembly can be achieved by reversing the operation, facilitating later inspection and maintenance. The fixed clamping plate 5 is secured to the movable rack 8 using a fixed bracket 9, thus fixing the fixed clamping plate 5. Disassembly can be performed by reversing the operation later, facilitating later disassembly and maintenance of the fixed clamping plate 5. During tension testing of the tensioning machine, the position of the entire testing system can be adjusted and installed on different sides of the tensioning machine, enabling multi-point testing and ensuring comprehensive and efficient tension testing.
[0019] Although the present invention 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 invention should be included within the protection scope of the present invention.
Claims
1. An automatic tension detection and control system for a net stretching machine, comprising a tension mechanism rotary cylinder (101) and a rodless cylinder mounting plate (102), wherein the tension mechanism rotary cylinder (101) is provided with the rodless cylinder mounting plate (102) at one end; characterized in that: The rodless cylinder mounting plate (102) is fixed with an adjustment frame (111) on one side, and the adjustment frame (111) is equipped with a horizontally driven rodless cylinder body (103) on one side. One end of the rodless cylinder body (103) is connected to a horizontally movable seat (12), and both sides of the movable seat (12) are connected with horizontally limited guide columns (6). The top of the movable seat (12) is fixedly connected with a lifting cylinder mounting plate (104), and the bottom end of the lifting cylinder mounting plate (104) is connected with a tension detection component. The bottom of the tension mechanism rotary cylinder (101) is connected to a rodless cylinder mounting plate (102). A fixed clamping frame (3) is welded to one side of the bottom end of the rodless cylinder mounting plate (102), and a fixing component is provided inside the fixed clamping frame (3). The fixing component fixes the bottom support platform (2) and the tension detection component to the frame of the tensioning machine.
2. The automatic tension detection and control system for a net stretching machine according to claim 1, characterized in that: The fixing component includes a self-locking motor (7) connected to the back of the fixing frame (3), and the self-locking motor (7) is supported by a support plate. The output shaft of the self-locking motor (7) is connected to a motor shaft (701), and one end of the motor shaft (701) passes through the fixing frame (3) and is connected to a power gear (4). Both sides of the power gear (4) are meshed with movable racks (8). When the power gear (4) rotates, the movable racks (8) on both sides move vertically up and down.
3. The automatic tension detection and control system for a net stretching machine according to claim 2, characterized in that: One end of the movable rack (8) is fitted with a fixed bracket (9), and both sides of the fixed bracket (9) are threaded with fixing bolts (901). One end of each fixing bolt (901) extends into the interior of the movable rack (8) for the detachable assembly of the fixed bracket (9).
4. The automatic tension detection and control system for a net stretching machine according to claim 3, characterized in that: The fixed clamping plate (5) is fixed on one side of the fixed clamping base (9). The two fixed clamping plates (5) move towards each other and fit against the frame of the net stretching machine. The fixed clamping plate (5) is fixed on one side of the fixed clamping plate (5). The contact surface between the rubber toothed plate (501) and the net stretching machine is serrated, which improves the stability and anti-slip ability of the connection with the net stretching machine frame.
5. The automatic tension detection and control system for a net stretching machine according to claim 2, characterized in that: Limiting blocks (11) are fixed on one side of the movable rack (8), and limiting grooves (10) are provided on both sides of the inside of the fixed clamping frame (3). The limiting blocks (11) slide inside the limiting grooves (10) to limit and guide the longitudinal movement of the movable rack (8).
6. The automatic tension detection and control system for a net stretching machine according to claim 1, characterized in that: The tension detection assembly includes multiple components connected in sequence. The lifting cylinder body (105) is connected to one side of the lifting cylinder mounting plate (104). The bottom end of the lifting cylinder body (105) is connected to the rotating cylinder B fixing plate (106). The bottom end of the rotating cylinder B fixing plate (106) is further connected to the tension meter rotating cylinder (107). The tension meter rotating cylinder (107) is used for transition support, and the bottom of the tension meter rotating cylinder (107) is connected to the tension meter support (108).
7. The automatic tension detection and control system for a net stretching machine according to claim 6, characterized in that: One end of the tension meter support (108) is connected to the tension meter fixing seat (109), and the tension meter body (110) is snapped into the tension meter fixing seat (109). The tension meter body (110) is the core detection element of the entire tension detection assembly and is used for tension detection of the net stretching machine.
8. The automatic tension detection and control system for a net stretching machine according to claim 1, characterized in that: The fixed clamping frame (3) has through holes (301) on both sides of its bottom, and the cross-section of the through holes (301) is rectangular. The cross-sectional area of the through holes (301) is larger than the cross-sectional area of the movable rack (8), and the movable rack (8) can move longitudinally in the through holes (301).
9. The automatic tension detection and control system for a net stretching machine according to claim 1, characterized in that: The rodless cylinder mounting plate (102) is made of stainless steel and is connected to the rotating end of the tension mechanism rotary cylinder (101) by bolts.