Textile fabric printing and dyeing effect detection equipment

Abstract

The application discloses a kind of textile fabric printing and dyeing effect detection equipment, it is related to cloth printing and dyeing detection technical field, including detection table, the upper surface of the detection table central position is fixedly installed with U-shaped frame two, the inside of U-shaped frame two is installed with the bearing roller, the upper surface right side of the detection table is fixedly installed with vertical frame, the inside of U-shaped frame two is installed with pre-tightening mechanism, by setting the mechanical linkage of pre-tightening mechanism and synchronous lifting mechanism, effectively solve the uneven cloth surface fluctuation problem caused by cloth seam, uneven thickness or tension fluctuation in prior art, when cloth surface fluctuates up and down, the detection wheel opposite to bearing roller is always close to cloth surface under the pre-tightening effect of connecting spring and guide telescopic rod, by the vertical sliding of sliding block in rectangular groove one, cloth surface fluctuation displacement is transmitted to rack two by rectangular plate;Rack two drive gear two and gear one rotate, in turn drive rack one and sliding frame synchronous lifting in rectangular groove two.

Description

Technical Field

[0001] This invention relates to the field of fabric printing and dyeing testing technology, specifically to a textile fabric printing and dyeing effect testing device. Background Technology

[0002] Textile fabrics come in a wide variety of types, mainly classified into two categories based on fiber raw materials: natural fibers (such as cotton, linen, wool, and silk) and chemical fibers (such as polyester, nylon, viscose, and spandex). They can also be blended or interwoven to combine the advantages and disadvantages of different fibers. In terms of structure, common types include plain weave, twill weave, satin weave, knitted fabric, and non-woven fabric. Different structures give fabrics different feel, strength, breathability, and elasticity. In the testing of textile dyeing and printing effects, the core focus is on evaluating color fastness, color uniformity, and the safety of dye and chemical residues.

[0003] In existing textile fabric printing and dyeing effect detection technologies, the fabric to be inspected is first laid out or transported flat and at a uniform speed to the imaging area of ​​a high-resolution industrial camera, with a stable lighting environment provided by a standard light source box. The camera then continuously acquires color and multi-channel spectral images of the fabric surface. Image processing software automatically identifies the fabric sample location and corrects image distortion and background interference. Next, the system uses a pre-trained algorithm model to perform color difference analysis on the images, identify local defects such as color spots, stains, misaligned printing, or missed printing, and locate and classify fabric surface defects. Finally, the software outputs the detection results in real time as an electronic report with defect annotations, completing the online or offline assessment of printing and dyeing quality.

[0004] However, during inspection, due to fabric seams, uneven thickness, or tension fluctuations, the fabric surface will undulate above the bottom light source, causing the camera object distance to change in real time. This makes it impossible for the imaging system to maintain constant focus, thus introducing varying degrees of blurring and magnification fluctuations into the acquired images. As a result, the system's false detection and false negative rates for defects such as color spots and stains increase, and the repeatability and reliability of the inspection decrease significantly. Especially in high-speed, high-resolution inspection scenarios, the confidence level of defect location and classification is difficult to meet the stability requirements of industrial quality inspection.

[0005] Although the problem of fabric undulation can be solved by raising and lowering the detection wheel to synchronize the movement of the fabric and the detection camera, the detection wheel cannot always stay in close contact with the fabric. It will detach due to insufficient gravity, causing the camera to lose precise synchronization with the fabric. As a result, the problem of object distance fluctuation will reappear, and the phenomena of out-of-focus blur and unstable magnification will be reintroduced into the image. Summary of the Invention

[0006] The purpose of this invention is to provide a textile fabric printing and dyeing effect detection device to solve the problem of incomplete contact of the detection wheel while ensuring the synchronization of the distance between the fabric surface and the camera.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a textile fabric printing and dyeing effect testing device, comprising a testing platform, a U-shaped frame II fixedly installed at the center of the upper surface of the testing platform, a receiving roller installed inside the U-shaped frame II, a vertical frame fixedly installed on the right side of the upper surface of the testing platform, a pre-tightening mechanism installed inside the U-shaped frame II, and a synchronous lifting mechanism for converting the fabric undulation force into synchronous force installed at the power output end of the pre-tightening mechanism, the synchronous lifting mechanism being installed on the back of the U-shaped frame II.

[0008] Preferably, the synchronous lifting mechanism includes a sliding frame, a rack, an L-shaped block, a rotating shaft, a gear, and a gear. A rectangular groove is formed inside the upper side of the vertical frame. The outer surfaces of both ends of the sliding frame are slidably connected to the inner wall of the rectangular groove. The front of the rack is fixedly installed to one end of the sliding frame. The front of the L-shaped block is fixedly installed to the back of the vertical frame. The outer surface of the rotating shaft is rotatably installed to the inner wall of the L-shaped block. The inside of the gear is fixedly installed to the outer surface of the rotating shaft. The outer surface of the gear is meshed with the outer surface of the gear. Multiple detection cameras are installed on the lower surface of the sliding frame.

[0009] Preferably, the pre-tightening mechanism includes a connecting spring, a guide telescopic rod, a sliding block, and a detection wheel. A rectangular groove is formed inside the upper side of the U-shaped frame. One end of the connecting spring is fixedly installed inside the upper side of the rectangular groove. One end of the guide telescopic rod is fixedly installed inside the upper side of the pre-tightening mechanism. The outer surface of the sliding block is slidably connected to the inner wall of the rectangular groove. The outer surface of the detection wheel shaft is rotatably installed to the inner wall of the sliding block. The detection wheel and the receiving roller are arranged opposite to each other. A rectangular plate is fixedly installed on the back of the sliding block.

[0010] Preferably, the front of the rack is fitted to the back of the vertical frame, and the left side of the rack meshes with the outer surface of the gear.

[0011] Preferably, a second rotating shaft is rotatably mounted on the inner wall of the L-shaped block, and the outer surface of the second rotating shaft is fixedly mounted to the inside of the second gear.

[0012] Preferably, the outer surface of the second gear meshes with the second rack, and the left side of the second rack is fixedly installed with the right side of the rectangular plate.

[0013] Preferably, one end of the connecting spring and the guide telescopic rod are both fixedly installed on the upper surface of the sliding block, and the rectangular plate is set to move synchronously with the lifting and lowering of the sliding block.

[0014] Preferably, a U-shaped frame is fixedly installed on the left side of the upper surface of the testing platform, and a transfer roller is installed inside the U-shaped frame.

[0015] Preferably, a placement groove is provided on the right side of the upper surface of the testing platform, and a light source lamp is fixedly installed inside the placement groove.

[0016] Preferably, an extension plate is fixedly installed at the right end of the testing station, a fixing frame is fixedly installed on the upper surface of the extension plate, and a conveying roller is installed inside the fixing frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This invention effectively solves the problem of fabric surface undulation caused by fabric seams, uneven thickness, or tension fluctuations in the prior art by setting up a pre-tightening mechanism and a synchronous lifting mechanism. When the fabric surface undulates up and down, the detection wheel, which is set opposite to the receiving roller, always keeps close to the fabric surface under the pre-tightening action of the connecting spring and the guide telescopic rod. The undulation displacement of the fabric surface is transmitted to the rack two through the rectangular plate by the vertical sliding of the sliding block in the first rectangular groove. The rack two drives the gear two and gear one to rotate, thereby driving the rack one and the sliding frame to rise and fall synchronously in the second rectangular groove. This keeps the multiple sets of detection cameras fixedly installed on the lower surface of the sliding frame at a constant distance from the fabric surface, eliminating the blurring and magnification fluctuation caused by the fabric surface undulation, and reducing the false detection rate and missed detection rate of defects such as color spots and stains.

[0018] This invention ensures that the imaging system maintains optimal focus by synchronously raising and lowering the detection camera and the fabric surface. Combined with uniform illumination provided by the fixed light source in the placement slot, the clarity and consistency of the acquired images are fundamentally guaranteed. The entire mechanism relies on a stable conveying platform composed of the detection table, U-shaped frame one, U-shaped frame two, vertical frame, fixed frames on the extension plate, and conveyor rollers. This achieves flat and uniform conveying of the fabric from the transfer roller, through the receiving roller, to the conveying roller. The equipment has a compact structure, high reliability due to purely mechanical linkage, and effectively solves the problem of the detection wheel detaching from the fabric surface due to insufficient gravity. This ensures that the confidence level of defect location and classification meets the long-term stability requirements of industrial quality inspection, and has good promotional value and application prospects. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A top-view structural diagram; Figure 3 For the present invention Figure 1 A schematic diagram of the structure viewed from below; Figure 4 For the present invention Figure 1 A schematic diagram of the rear view structure; Figure 5 For the present invention Figure 1 A partial structural diagram; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point A; Figure 7 For the present invention Figure 5 A schematic diagram of the side view structure; Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point B.

[0020] In the diagram: 1. Inspection table; 2. U-shaped frame one; 3. Transfer roller; 4. U-shaped frame two; 5. Extension plate; 6. Fixing frame; 7. Conveying roller; 8. Receiving roller; 9. Placement groove; 10. Light source; 11. Pre-tightening mechanism; 111. Rectangular groove one; 112. Connecting spring; 113. Guide telescopic rod; 114. Sliding block; 115. Detection wheel; 116. Rectangular plate; 12. Vertical frame; 13. Synchronous lifting mechanism; 131. Rectangular groove two; 132. Sliding frame; 133. Rack one; 134. L-shaped block; 135. Rotating shaft one; 136. Gear one; 137. Rotating shaft two; 138. Gear two; 139. Rack two; 1310. Inspection camera. Detailed Implementation

[0021] 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, and 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.

[0022] Please see Figure 1 , Figure 7 and Figure 8As shown, the present invention provides a technical solution: a textile fabric printing and dyeing effect testing device, including a testing platform 1, a U-shaped frame 2 4 fixedly installed at the center of the upper surface of the testing platform 1, a receiving roller 8 installed inside the U-shaped frame 2 4, a vertical frame 12 fixedly installed on the right side of the upper surface of the testing platform 1, a pre-tightening mechanism 11 installed inside the U-shaped frame 2 4, a synchronous lifting mechanism 13 for converting the fabric undulation force into synchronous force installed at the power output end of the pre-tightening mechanism 11, the synchronous lifting mechanism 13 being installed on the back of the U-shaped frame 2 4, the synchronous lifting mechanism 13 including a sliding frame 132, a rack 133, an L-shaped block 134, a rotating shaft 135, a gear 136, and a gear 2 138, a rectangular groove 2 131 opened inside the upper side of the vertical frame 12, the outer surfaces of both ends of the sliding frame 132 being slidably connected to the inner wall of the rectangular groove 2 131, the rack ... U-shaped frame 2 134, the rack 132 being slidably connected to the inner wall of the The front of the L-shaped block 133 is fixedly installed with one end of the sliding frame 132. The front of the L-shaped block 134 is fixedly installed with the back of the vertical frame 12. The outer surface of the rotating shaft 135 is rotatably installed with the inner wall of the L-shaped block 134. The inside of the gear 136 is fixedly installed with the outer surface of the rotating shaft 135. The outer surface of the gear 138 meshes with the outer surface of the gear 136. Multiple sets of detection cameras 1310 are installed on the lower surface of the sliding frame 132. The front of the rack 133 is attached to the back of the vertical frame 12. The left side of the rack 133 meshes with the outer surface of the gear 136. The rotating shaft 137 is rotatably installed on the inner wall of the L-shaped block 134. The outer surface of the rotating shaft 137 is fixedly installed with the inside of the gear 138. The outer surface of the gear 138 meshes with the rack 139. The left side of the rack 139 is fixedly installed with the right side of the rectangular plate 116.

[0023] Specifically, when the fabric undulates due to the tension applied by the pre-tensioning mechanism 11, the synchronous lifting mechanism 13 can convert the undulating force of the fabric into the synchronous lifting motion of the detection camera 1310 in real time. This ensures that the camera 1310 maintains a constant distance from the fabric surface, avoiding image blurring or color difference misjudgment caused by distance changes. The meshing of gear 138 and rack 139 converts the rotational motion into linear motion, and forms a force feedback closed loop with the pre-tensioning mechanism 11 through the rectangular plate 116. This allows the entire system to automatically adjust the height of the detection camera 1310 when the fabric tension changes, achieving force-position synchronization between the detection end and the pre-tensioning end, improving detection accuracy and equipment automation level. The sliding frame 132 slides up and down within the rectangular groove 131, providing a stable longitudinal motion track for the detection camera 1310. The structure is simple and the motion accuracy is high. When the fabric undulates and causes the sliding frame 132 to move up and down, the rack 133 slides along the back of the vertical frame 12 and drives the gear 136 to rotate. The gear 136 then transmits the power to the rack 139 through the gear 138, realizing the precise synchronous transmission of the fabric undulation force to the detection end. The transmission ensures the smoothness of the motion and the sensitivity of the response. Multiple detection cameras 1310 can simultaneously capture the fabric printing effect from multiple angles, covering a large area, with high detection efficiency, and can capture local color differences and pattern deviations that are difficult to detect by a single camera 1310.

[0024] according to Figure 1 , Figure 5 and Figure 6 As shown, the pre-tightening mechanism 11 includes a connecting spring 112, a guide telescopic rod 113, a sliding block 114, and a detection wheel 115. A rectangular groove 111 is provided inside the upper side of the U-shaped frame 4. One end of the connecting spring 112 is fixedly installed inside the upper side of the rectangular groove 111. One end of the guide telescopic rod 113 is fixedly installed inside the upper side of the pre-tightening mechanism 11. The outer surface of the sliding block 114 is slidably connected to the inner wall of the rectangular groove 111. The outer surface of the shaft of the detection wheel 115 is rotatably installed to the inner wall of the sliding block 114. The detection wheel 115 is arranged opposite to the receiving roller 8. A rectangular plate 116 is fixedly installed on the back of the sliding block 114. One end of the connecting spring 112 and the guide telescopic rod 113 are both fixedly installed to the upper surface of the sliding block 114. The rectangular plate 116 moves synchronously with the lifting and lowering of the sliding block 114.

[0025] Specifically, the sliding block 114 slides vertically within the rectangular groove 111, featuring a compact structure and clear motion guidance. This provides a stable track for the lifting and lowering of the detection wheel 115. The detection wheel 115 and the receiving roller 8 are positioned vertically opposite each other, jointly clamping the fabric. The detection wheel 115 can rotate freely, avoiding fabric stretching or deformation or additional stress caused by rotational resistance. This ensures the natural state of the fabric during the inspection process and improves the accuracy of the dyeing effect inspection. The connecting spring 112 provides a continuous and adjustable preload to the detection wheel 115, and the guide telescopic rod 113 constrains the movement direction of the sliding block 114. The two work together to ensure that the detection wheel 115 remains vertical during its up-and-down movement, avoiding tilting or deviation, and ensuring that the preload is evenly applied to the fabric surface. This eliminates the problem of fabric wrinkles and local loosening caused by uneven force. The rectangular plate 116 is rigidly connected to the sliding block 114, which transmits the undulating force generated by the preload to the rack 139 of the synchronous lifting mechanism 13 in real time. This realizes the direct force-displacement linkage between the preload end and the detection end, enabling the detection camera 1310 to follow the undulations of the fabric surface and rise and fall synchronously, always maintaining a constant shooting distance, effectively avoiding image blurring and color difference misjudgment caused by distance changes.

[0026] according to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a U-shaped frame 2 is fixedly installed on the left side of the upper surface of the testing table 1. A transmission roller 3 is installed inside the U-shaped frame 2. A placement groove 9 is opened on the right side of the upper surface of the testing table 1. A light source lamp 10 is fixedly installed inside the placement groove 9. An extension plate 5 is fixedly installed at the right end of the testing table 1. A fixing frame 6 is fixedly installed on the upper surface of the extension plate 5. A conveying roller 7 is installed inside the fixing frame 6.

[0027] Specifically, the conveyor roller 3 is used to initially flatten and uniformly transport the fabric before inspection, ensuring that the fabric enters the inspection area of ​​the U-shaped frame 4 in a flat state. This prevents wrinkles from entering the inspection process and causing misjudgments. The light source 10 is embedded in the placement slot 9, and the light source illuminates the back of the fabric from bottom to top, forming uniform backlighting. This effectively eliminates color difference interference caused by uneven ambient light on the fabric surface, making the dyeing color collected by the inspection camera 1310 closer to the true value and improving the accuracy of color difference detection. The extension plate 5 and the fixed frame 6 extend the conveying path from the surface of the inspection table 1 to the right, and the conveying roller 7 is responsible for smoothly outputting the fabric that has completed the inspection. This realizes the continuous operation of the entire process of fabric flattening, inspection and output, without the need for manual intervention to change materials, thus improving the inspection efficiency.

[0028] The overall effect of the mechanism is as follows: Before the inspection begins, the textile fabric to be inspected is first guided by the transfer roller 3 inside the U-shaped frame 2, and then the fabric is flatly transported to the top of the inspection table 1. The fabric passes over the receiving roller 8 inside the U-shaped frame 4 and continues to be transported to the right to the conveying roller 7 set inside the fixed frame 6 on the extension plate 5. After the inspection is completed, the conveying operation is completed. A light source 10 is fixedly installed in the placement groove 9 directly below the inspection area. The light source illuminates the fabric from bottom to top, providing a uniform and stable backlight environment for subsequent image acquisition. When the fabric runs above the receiving roller 8, due to factors such as fabric seams, uneven thickness, or tension fluctuations, the fabric surface will move up and down. The detection wheel 115, which is set opposite to the receiving roller 8, directly contacts the fabric surface. The detection wheel 115 is rotatably installed inside the sliding block 114 through its shaft. The outer surface of the sliding block 114 is slidably connected to the inner wall of the rectangular groove 111 opened inside the upper side of the U-shaped frame 4. A connecting spring 112 and a guide telescopic rod 113 are provided above the sliding block 114. The upper ends of both are fixedly installed inside the upper side of the rectangular groove 111, and the lower ends are fixedly installed on the upper surface of the sliding block 114. The connecting spring 112 continuously provides a downward preload, forcing the detection wheel 115 to always be in close contact with the fabric surface; the guide telescopic rod 113 ensures that the sliding block 114 can only slide smoothly in the vertical direction within the rectangular groove 111, preventing lateral deviation. When the fabric surface rises, the detection wheel 115 is pushed upward, and the sliding block 114 slides upward against the elastic force of the connecting spring 112; when the fabric surface falls, the elastic force of the connecting spring 112 pushes the sliding block 114 and the detection wheel 115 downward to follow, thereby achieving real-time, non-disengaging tracking of the undulating movement of the fabric surface. A rectangular plate 116, fixedly mounted on the back of the sliding block 114, rises and falls synchronously with the sliding block 114. A rack 139 is fixedly mounted on the right side of the rectangular plate 116, with its outer surface meshing with the outer surface of a gear 138. Gear 138 is fixedly mounted on the outer surface of a rotating shaft 137, which is rotatably mounted on the inner wall of the L-shaped block 134. The outer surface of gear 138 also meshes with the outer surface of a gear 136, which is fixedly mounted on the outer surface of a rotating shaft 135, which is rotatably mounted on the inner wall of the L-shaped block 134. The front of the L-shaped block 134 is fixedly mounted to the back of the vertical frame 12. When the detection wheel 115 rises with the fabric, the rectangular plate 116 drives the rack 139 to rise, which in turn drives the gear 138 to rotate. The gear 138 then transmits the rotational motion to the meshing gear 136, which in turn drives the rack 133 to move. The front of rack 133 is fitted against the back of vertical frame 12, and the left side of rack 133 meshes with gear 136. The front of rack 133 is fixedly installed to one end of sliding frame 132. The outer surfaces of both ends of sliding frame 132 are slidably connected to the inner wall of rectangular groove 131 opened inside the upper side of vertical frame 12.Therefore, the lifting motion of rack 133 drives the sliding frame 132 to rise and fall synchronously within the rectangular groove 131. Multiple sets of detection cameras 1310, fixedly mounted on the lower surface of the sliding frame 132, rise and fall synchronously accordingly. While maintaining a constant object distance between the detection cameras 1310 and the fabric surface, the light source 10 provides uniform transmitted illumination from the bottom. The detection cameras 1310 continuously acquire color and multi-channel spectral images of the fabric surface. The acquired images are transmitted to image processing software, which automatically identifies the fabric sample position and corrects image distortion and background interference. Subsequently, the system uses a pre-trained algorithm model to perform color difference analysis on the images, identifying local defects such as color spots, stains, misaligned printing, or missing prints, and locating and classifying fabric surface defects.

[0029] In this invention, the light source 10 preferably uses a high-brightness LED linear light source. Specific models can be high-uniformity linear array light sources from CCS or machine vision-specific backlights from OPT. The color temperature is typically selected as 5000K-6500K to simulate a standard daylight environment, ensuring the uniformity and stability of the transmitted light illumination. The detection camera 1310 preferably uses a high-resolution industrial linear array camera. Specific models can be Basler's raL series linear array camera or Hikvision's MV-CL series. The resolution is selected as 4K, 8K, or 16K depending on the detection width, and it is used with an F-interface fixed-focus lens from Computar or Schneider to ensure clear fabric images are acquired at a constant object distance. In terms of power supply, the entire equipment is powered by an external industrial power supply. The power is converted to DC 12V or DC 24V by the switching power supply module inside the detection station 1, which supplies power to the light source 10, the detection camera 1310, and the image processing industrial control computer, respectively. The light source 10 is driven by a dedicated LED controller with constant current. The detection camera 1310 is connected to the industrial control computer through Camera Link or GigE interface to obtain power and control signals. The surfaces of the receiving roller 8, the transmission roller 3, and the conveying roller 7 need to be covered with nitrile rubber or polyurethane to increase the friction between them and the fabric and avoid scratching the fabric surface. They are driven by external driving force. The detection wheel 115 needs to directly contact the fabric surface and move up and down frequently, so its material should be ultra-high molecular weight polyethylene or polyether ether ketone.

[0030] When using the equipment, ensure it is installed on a flat, dry, and vibration-free level surface to avoid interference with the synchronous lifting relationship between the detection camera 1310 and the fabric surface due to unstable foundation. Before each startup, check that the surface of the detection wheel 115 is clean and free of lint, and verify that the preload of the connecting spring 112 is normal. If the detection wheel 115 cannot maintain a tight fit with the fabric surface, replace the spring promptly. During fabric conveying, keep the surfaces of the transmission roller 3, receiving roller 8, and conveying roller 7 clean, and regularly clean any residual slurry or dye from the roller surfaces to prevent foreign objects from causing periodic imprints on the fabric surface. The sliding block 114 and rectangular groove one 111, and the sliding frame 132 and rectangular groove two 131... Although self-lubricating materials are used, it is still recommended to clean and check the sliding clearance once a month. If there is obvious shaking or jamming, the worn parts should be replaced in time. The meshing between gear 136 and gear 2138, and between rack 133 and rack 2139 should maintain an appropriate tooth flank clearance. Too tight will cause movement jamming, and too loose will cause transmission delay and impact. After the light source lamp 10 is turned on, it needs to be preheated for 5-10 minutes. The test can only be started after its light intensity output is stable. The grayscale of the test camera 1310 should be corrected with a standard white board every quarter to compensate for the light source attenuation. After each test, the lint and dust on the surface of the light source lamp in the placement slot 9 should be cleaned in time to ensure that the uniformity of the transmitted light illumination is not affected.

[0031] 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. A textile fabric printing and dyeing effect testing device, characterized in that: The test platform (1) is provided with a U-shaped frame (4) fixedly installed at the center of the upper surface of the test platform (1). A receiving roller (8) is installed inside the U-shaped frame (4). A vertical frame (12) is fixedly installed on the right side of the upper surface of the test platform (1). A pre-tightening mechanism (11) is installed inside the U-shaped frame (4). A synchronous lifting mechanism (13) that converts the fabric undulation force into synchronous force is installed at the power output end of the pre-tightening mechanism (11). The synchronous lifting mechanism (13) is installed on the back of the U-shaped frame (4).

2. The textile fabric printing and dyeing effect testing equipment according to claim 1, characterized in that: The synchronous lifting mechanism (13) includes a sliding frame (132), a rack (133), an L-shaped block (134), a rotating shaft (135), a gear (136), and a gear (138). A rectangular groove (131) is provided inside the upper side of the vertical frame (12). The outer surfaces of both ends of the sliding frame (132) are slidably connected to the inner wall of the rectangular groove (131). The front of the rack (133) is fixedly mounted to one end of the sliding frame (132). The L-shaped block (134) is fixedly installed on the front and the back of the vertical frame (12). The outer surface of the first rotating shaft (135) is rotatably installed on the inner wall of the L-shaped block (134). The inside of the first gear (136) is fixedly installed on the outer surface of the first rotating shaft (135). The outer surface of the second gear (138) meshes with the outer surface of the first gear (136). Multiple sets of detection cameras (1310) are installed on the lower surface of the sliding frame (132).

3. The textile fabric printing and dyeing effect testing equipment according to claim 1, characterized in that: The pre-tightening mechanism (11) includes a connecting spring (112), a guide telescopic rod (113), a sliding block (114), and a detection wheel (115). A rectangular groove (111) is provided inside the upper side of the U-shaped frame (4). One end of the connecting spring (112) is fixedly installed inside the upper side of the rectangular groove (111). One end of the guide telescopic rod (113) is fixedly installed inside the upper side of the pre-tightening mechanism (11). The outer surface of the sliding block (114) is slidably connected to the inner wall of the rectangular groove (111). The outer surface of the shaft of the detection wheel (115) is rotatably installed to the inner wall of the sliding block (114). The detection wheel (115) is arranged opposite to the receiving roller (8). A rectangular plate (116) is fixedly installed on the back of the sliding block (114).

4. The textile fabric printing and dyeing effect testing equipment according to claim 2, characterized in that: The front of the rack (133) is fitted against the back of the vertical frame (12), and the left side of the rack (133) meshes with the outer surface of the gear (136).

5. The textile fabric printing and dyeing effect testing equipment according to claim 2, characterized in that: The inner wall of the L-shaped block (134) is rotatably mounted with a second rotating shaft (137), and the outer surface of the second rotating shaft (137) is fixedly mounted with the inside of the second gear (138).

6. The textile fabric printing and dyeing effect testing equipment according to claim 5, characterized in that: The outer surface of the gear two (138) is meshed with the rack two (139), and the left side of the rack two (139) is fixedly installed with the right side of the rectangular plate (116).

7. The textile fabric printing and dyeing effect testing equipment according to claim 3, characterized in that: One end of the connecting spring (112) and the guide telescopic rod (113) are fixedly installed on the upper surface of the sliding block (114), and the rectangular plate (116) is set to move synchronously with the sliding block (114) as it rises and falls.

8. The textile fabric printing and dyeing effect testing equipment according to claim 1, characterized in that: A U-shaped frame (2) is fixedly installed on the left side of the upper surface of the testing platform (1), and a transmission roller (3) is installed inside the U-shaped frame (2).

9. The textile fabric printing and dyeing effect testing equipment according to claim 1, characterized in that: The upper surface of the testing station (1) has a placement slot (9) on the right side, and a light source lamp (10) is fixedly installed inside the placement slot (9).

10. The textile fabric printing and dyeing effect testing equipment according to claim 1, characterized in that: An extension plate (5) is fixedly installed on the right end of the testing station (1), and a fixing frame (6) is fixedly installed on the upper surface of the extension plate (5). A conveying roller (7) is installed inside the fixing frame (6).

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