A textile printing fastness testing device and method

Abstract

The present invention belongs to the technical field of textile performance testing, and discloses a textile print fastness testing device and method. The textile print fastness testing device includes a rolling member and a limiting member. The rolling member includes a rolling portion and a hand-held portion, at least part of the outer peripheral surface of the rolling portion forms a rolling surface, the rolling surface extends in a circular arc shape around the first axis, the hand-held portion is connected to the rolling portion and protrudes from both ends of the rolling portion along the first axis direction; the limiting member includes two limiting portions, and limiting portions are provided on both sides of the rolling portion along the radial direction, and the lowermost edge of the limiting portion is higher than the lowermost edge of the rolling portion. The textile print fastness testing method adopts the above-mentioned textile print fastness testing device, utilizes a rolling member with an adhesive layer to roll the print, observes the shedding of the print, and evaluates the fastness of the print, thereby simplifying the test process, shortening the test cycle, and improving the test efficiency. The limiting portion limits the rolling of the rolling portion in the print area, thereby improving the test accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of textile performance testing, and in particular to a textile printing fastness testing device and method. Background Art

[0002] Textiles are usually printed on. Print fastness refers to the durability of the printing pigment on the fabric, which will not fade, break or fall off during the washing process. By testing the print fastness, the degree of fixation and durability of the printing pigment can be evaluated, providing reliable data support for textile printing processing. Currently, most tests for print fastness use a washing, drying and inspection test method. During the washing process, the water flow impacts the print, exerting an external force on the print, causing the print to fall off. The textile is dried, and the print is inspected for shedding, thereby evaluating the print fastness. This method has a complex operating process, a long test cycle, and low test efficiency. For prints with a smaller area, the print may be covered by the textile during the washing process, making the impact of the water flow on the print smaller, resulting in lower accuracy of the test results. Summary of the Invention

[0003] The purpose of the present invention is to provide a textile printing fastness testing device and method, which are used to test the printing fastness of textiles, simplify the testing process, shorten the testing cycle, and improve the testing accuracy.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A textile printing fastness testing device, comprising:

[0006] The rolling member includes a rolling portion and a handle portion, wherein at least a portion of the outer circumference of the rolling portion forms a rolling surface, and the rolling surface extends in an arc shape around a first axis. The handle portion is connected to the rolling portion and protrudes from both ends of the rolling portion along the first axis.

[0007] A limiting member is connected to the rolling portion, and the limiting member includes two limiting portions. The limiting portion is provided on both sides of the rolling portion along the radial direction. The limiting portion extends downwardly and obliquely relative to the rolling portion, and the lowermost edge of the limiting portion is higher than the lowermost edge of the rolling portion.

[0008] In the above-mentioned textile printing fastness testing device, the limiting part also includes a connecting portion, the limiting portion is connected to the connecting portion, the top of the rolling portion forms a horizontally extending mounting surface, and the connecting portion is fixedly connected to the mounting surface.

[0009] In the above-mentioned textile printing fastness testing device, the limiting part is rotatably connected to the connecting part and locked by an angle adjustment component, and the angle of the limiting part relative to the connecting part can be adjusted to change the inclination angle of the limiting part.

[0010] The above-mentioned textile printing fastness testing device, wherein the angle adjustment assembly includes a first screw, a first nut and an elastic member, the first screw is passed through the limiting portion and the connecting portion and protrudes from both sides of the connecting portion along the first axis direction, the limiting portion can rotate around the first screw, the elastic member is sleeved on the first screw and clamped between the limiting portion and the connecting portion, and the first nut is threadedly connected to the first screw.

[0011] In the above-mentioned textile printing fastness testing device, the limiting part is a limiting plate, and the angle between the plane where the limiting plate is located and the installation surface is 0-90 degrees.

[0012] In the above-mentioned textile printing fastness testing device, a height adjustment component is provided between the connecting portion and the rolling portion, and the height adjustment component can change the distance between the connecting portion and the mounting surface.

[0013] The above-mentioned textile printing fastness testing device, wherein the height adjustment component includes a second screw and two second nuts, the second screw is passed through the connecting part and is threadedly connected to the rolling part, the two second nuts are threadedly connected to the second screw, and the connecting part is clamped between the two second nuts.

[0014] In the above-mentioned textile printing fastness testing device, the rolling member and / or the limiting member is provided with a counterweight block, and the counterweight block is detachable.

[0015] In the above-mentioned textile printing fastness testing device, the hand-held part is fixedly connected to the rolling part; or the hand-held part is connected to the rolling part via a bearing.

[0016] A method for testing the fastness of textile printing, using the above-mentioned textile printing fastness testing device, comprises:

[0017] Step 1: Lay the test sample flat on a test platform. The test sample includes the fabric and the print on the fabric.

[0018] Step 2: Lay an adhesive layer on the rolled surface of the rolled part, and both sides of the adhesive layer are sticky;

[0019] Step 3: The operator holds the handheld portion and places the rolling element on the printed area. The handheld portion is operated to cause the rolling element to roll back and forth around the first axis. The limiting portion rotates with the rolling element until it contacts the fabric, restricting the rolling element from continuing to roll. This cycle continues, causing the rolling element to roll in the printed area.

[0020] During the reciprocating rolling process of the rolling part, the adhesive layer repeatedly adheres to and separates from the printing, and in the process of separating from the printing, the adhesive layer pulls the printing away from the fabric;

[0021] When the rolling part reciprocates to reach the first set number of times, the rolling is stopped and the shedding of the printing is observed;

[0022] Step 4: Replace rollers of different qualities and repeat steps 2 and 3 to evaluate the firmness of the print.

[0023] Beneficial effects of the present invention: The present invention provides a textile print fastness testing device. When in use, the test sample is flattened and laid on the test platform, and an adhesive layer is laid on the rolling surface of the rolling member. The operator holds the handheld portion and causes the rolling portion to roll back and forth on the printed surface around the first axis for a first set number of times, observes the shedding of the print, and then evaluates the fastness of the print. This testing method simplifies the testing process, shortens the testing cycle, and improves testing efficiency. The limiting portion can limit the rolling range of the rolling portion. When the rolling portion rolls back and forth around the first axis, the limiting portion rotates with the rolling portion until it abuts against the test sample, limiting the rolling portion from continuing to roll; this cycle causes the rolling portion to roll in the printed area, ensuring that the rolling portion fully acts on the print, thereby improving test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 1 is a schematic structural diagram of a textile printing fastness testing device provided in Example 1 of the present invention;

[0025] Figure 2 1 is a schematic structural diagram of a rolling element provided in the first embodiment of the present invention;

[0026] Figure 3 1 is a schematic structural diagram of a position limiting member provided in the first embodiment of the present invention;

[0027] Figure 4 This is a first schematic diagram of an angle adjustment assembly provided between the limiting portion and the connecting portion provided in the second embodiment of the present invention;

[0028] Figure 5 This is a second schematic diagram of an angle adjustment assembly provided between the limiting portion and the connecting portion provided in the second embodiment of the present invention;

[0029] Figure 6 This is a third schematic diagram of an angle adjustment assembly provided between the limiting portion and the connecting portion provided in the second embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of a height adjustment component provided between the connecting portion and the rolling portion provided in the third embodiment of the present invention.

[0031] In the picture:

[0032] 1. Rolled part; 11. Rolled portion; 111. Rolled surface; 112. Mounting surface; 12. Handheld portion; 13. Bearing;

[0033] 2. Limiting member; 21. Limiting portion; 22. Connecting portion; 221. First side surface; 222. Second side surface;

[0034] 3. Angle adjustment assembly; 31. First screw; 32. First nut; 33. Elastic member;

[0035] 4. Height adjustment assembly; 41. Second screw; 42. Second nut. DETAILED DESCRIPTION

[0036] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but are not to be construed as limiting the present invention.

[0037] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, mechanical or electrical connections, direct or indirect connections through an intermediate medium, and internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0038] In the description of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0040] Textiles are usually printed on. Print fastness refers to the durability of the printing pigment on the fabric, which will not fade, break or fall off during the washing process. By testing the print fastness, the degree of fixation and durability of the printing pigment can be evaluated, providing reliable data support for textile printing processing. Currently, most tests for print fastness use a washing, drying and inspection test method. During the washing process, the water flow impacts the print, exerting an external force on the print, causing the print to fall off. The textile is dried, and the print is inspected for shedding, thereby evaluating the print fastness. This method has a complex operating process, a long test cycle, and low test efficiency. For prints with a smaller area, the print may be covered by the textile during the washing process, making the impact of the water flow on the print smaller, resulting in lower accuracy of the test results.

[0041] In order to solve the above problems, the present invention provides a textile printing fastness testing device for testing the fastness of printing, which simplifies the testing process, shortens the testing cycle, and improves the testing efficiency and test accuracy.

[0042] Example 1

[0043] See also Figures 1 to 3 The textile printing fastness testing device includes a rolling member 1 and a limiting member 2. The rolling member 1 includes a rolling portion 11 and a hand-held portion 12. At least a portion of the outer peripheral surface of the rolling portion 11 forms a rolling surface 111, and the rolling surface 111 extends in an arc shape around a first axis. The hand-held portion 12 is connected to the rolling portion 11 and protrudes from the left and right ends of the rolling portion 11 along the first axis. The limiting member 2 is connected to the rolling portion 11 and includes two limiting portions 21. The limiting portions 21 are provided on both sides of the rolling portion 11 in the radial direction. The limiting portions 21 extend downwardly and obliquely relative to the rolling portion 11, and the lowermost edge of the limiting portion 21 is higher than the lowermost edge of the rolling portion 11.

[0044] During use, the test sample is flattened and laid on the test platform, and an adhesive layer is laid on the rolling surface 111 of the rolling member 1. The operator holds the handheld portion 12 and causes the rolling portion 11 to roll back and forth on the printed surface around the first axis for a first set number of times, observing the shedding of the print, and then evaluating the firmness of the print. This test method simplifies the test process, shortens the test cycle, and improves test efficiency. The limiting portion 21 can limit the rolling range of the rolling portion 11. When the rolling portion 11 rolls back and forth, the limiting portion 21 rotates with the rolling portion 11 until it abuts against the test sample, limiting the rolling portion 11 from continuing to roll. This cycle causes the rolling portion 11 to roll in the printed area, ensuring that the rolling portion 11 fully acts on the print, thereby improving test accuracy.

[0045] The front-back, top-bottom, and left-right directions are defined with reference to the rolling portion 11. Figure 1The rolling surface 111 extends in an arc shape around the first axis, and the first axis extends in the left-right direction, which is convenient for the handheld rolling member 1 to roll on the print. A limiting portion 21 is provided on both sides of the rolling portion 11 in the radial direction, that is, a limiting portion 21 is provided on both sides of the front and rear of the rolling portion 11. The limiting portion 21 extends downwardly and tilted relative to the rolling portion 11. The limiting portion 21 located on the front side of the rolling portion 11 is tilted forward and downward relative to the rolling portion 11, and the limiting portion 21 located on the rear side of the rolling portion 11 is tilted forward and downward relative to the rolling portion 11, ensuring that the limiting portion 21 contacts the fabric where the print is located when the rolling portion 11 rolls forward and backward, thereby limiting the rolling portion 11 from rolling in the print area. The lowermost edge of the limiting portion 21 is higher than the lowermost edge of the rolling portion 11, ensuring that the rolling portion 11 can roll.

[0046] The rolling surface 111 extends in an arc shape around the first axis. The central angle corresponding to the rolling surface 111 can be 180°, less than 180°, or greater than 180°, as long as the rolling surface 111 has an arc that allows for printing. When the central angle corresponding to the rolling surface 111 is 180°, the rolling portion 11 is a semi-cylinder, which has a simple structure and is easy to process. The limiting portion 21 can be plate-shaped or rod-shaped, as long as the limiting portion 21 extends downwardly at an angle relative to the rolling portion 11 and the lowermost edge of the limiting portion 21 is higher than the lowermost edge of the rolling portion 11.

[0047] The limiting portion 21 can be directly or indirectly connected to the rolling portion 11. When directly connected, the limiting portion 21 can be inserted into the rolling portion 11, or it can be bolted to the rolling portion 11. Specifically, one end of the limiting portion 21 is provided with a clip, and the rolling portion 11 is provided with a groove. The clip can be inserted into the groove and engage with the groove. This allows for easy processing and disassembly.

[0048] In this embodiment, the limiting member 2 also includes a connecting portion 22, the limiting portion 21 is connected to the connecting portion 22, and the connecting portion 22 is connected to the rolling portion 11. By setting all the limiting portions 21 on the connecting portion 22, and then connecting the connecting portion 22 to the rolling portion 11, installation and disassembly are facilitated. A horizontally extending mounting surface 112 is formed on the top of the rolling portion 11, and the connecting portion 22 is fixedly connected to the mounting surface 112. The horizontally extending mounting surface 112 can provide better support for the connecting portion 22 and facilitate the positioning and assembly of the connecting portion 22. The mounting surface 112 is a rectangular plane of a semi-cylinder.

[0049] The connecting portion 22 and the rolling portion 11 can be connected by snapping or bolting. For example, the connecting portion 22 is provided with a plurality of through-holes at intervals, and the mounting surface 112 is provided with threaded holes at corresponding positions. To connect, the bolts are passed through the through-holes, the lower ends of the bolts are aligned with the threaded holes, and the bolts are tightened to secure the connecting portion 22 to the mounting surface 112. To disassemble, the bolts are removed and the connecting portion 22 is removed from the mounting surface 112.

[0050] The connecting portion 22 may be plate-shaped or rod-shaped. For example, the connecting portion 22 is plate-shaped, which facilitates the assembly and disassembly of the connecting portion 22 and the limiting portion 21 .

[0051] In this embodiment, the limiting portion 21 is fixedly connected to the connecting portion 22. The limiting portion 21 extends downwardly at a fixed angle relative to the rolling portion 11. The limiting portion 21 is a limiting plate, and the angle between the plane on which the limiting plate is located and the mounting surface 112 is 0-90 degrees, for example, 0°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, or 90°.

[0052] In order to ensure that the rolling member 1 can roll on prints of different areas, a plurality of limit members 2 at different angles can be set. The plurality of limit members 2 at different angles can enable the rolling member 1 to have different rolling ranges. The limit member 2 is detachably connected to the rolling member 1. By replacing the limit members 2 at different angles, the rolling range of the rolling member 1 can be adjusted, so that the textile print fastness testing device is suitable for prints of different areas, thereby improving the accuracy of the test results; at the same time, by setting the limit member 2 and the rolling member 1 to a detachable connection method, it is convenient for the operator to replace the limit member 2, thereby improving the test efficiency.

[0053] In the process of testing the fastness of the print, it is necessary to use rolling parts 1 of different masses. Rolling parts 1 of different masses apply different pressures to the adhesive layer, and thus have different pulling forces on the print, in order to ensure the accuracy of the test. If multiple rolling parts 1 of different masses are provided, the cost will increase. In this embodiment, the rolling part 1 and / or the limiting part 2 are provided with a counterweight block, and the counterweight block is removable. The counterweight block can be provided with one or more, and this embodiment does not impose specific restrictions on the number of counterweight blocks. The counterweight block can be clamped with the rolling part 1 and / or the limiting part 2, or it can be bolted to the rolling part 1 and / or the limiting part 2. For example, the counterweight block is bolted to the rolling part 1 and / or the limiting part 2, and the structure is simple and easy to assemble and disassemble.

[0054] The handheld portion 12 is provided to facilitate rolling of the rolling portion 11. The handheld portion 12 is fixedly connected to the rolling portion 11; alternatively, the handheld portion 12 and the rolling portion 11 are connected via a bearing 13. When the handheld portion 12 is fixedly connected to the rolling portion 11, the operator holds the handheld portion 12 to roll the rolling portion 11, and needs to press and rotate the handheld portion 12 back and forth to achieve rolling of the rolling portion 11. When the handheld portion 12 and the rolling portion 11 are connected via a bearing 13, the rolling portion 11 can rotate relative to the handheld portion 12, and the operator presses the handheld portion 12 downward at an angle, and the rolling portion 11 can roll on the printed portion, thereby improving the grip comfort and reducing the operator's labor intensity.

[0055] One or two hand-held parts 12 can be provided. When one hand-held part 12 is provided, the hand-held part 12 is rod-shaped, and the rolling part 11 is provided with a receiving hole. The receiving hole penetrates the rolling part 11 along the left and right directions of the rolling part 11. One or more bearings 13 are provided in the receiving hole. The outer ring of the bearing 13 is interference-connected with the inner wall of the receiving hole, and the inner ring of the bearing 13 is interference-connected with the outer surface of the hand-held part 12. The hand-held part 12 protrudes from the left and right sides of the rolling part 11. When two hand-held parts 12 are provided, part of the hand-held part 12 can be rod-shaped. Grooves are provided on both axial end faces of the rolling part 11, and a bearing 13 is provided in the groove 13. The outer ring of the bearing 13 is interference-connected with the inner wall of the groove, and the inner ring of the bearing 13 is interference-connected with the rod-shaped part of the hand-held part 12.

[0056] Example 2

[0057] Figures 4 to 6 A second embodiment is shown, in which the components identical or corresponding to those in the first embodiment are denoted by the corresponding reference numerals in the first embodiment. For simplicity, only the differences between the second embodiment and the first embodiment are described. The difference is that the limiting portion 21 is rotatably connected to the connecting portion 22 and is locked by the angle adjustment assembly 3, and the angle of the limiting portion 21 relative to the connecting portion 22 is adjustable to change the inclination angle of the limiting portion 21. In actual use, different sizes of prints require the rolling portion 11 to have different rolling ranges to improve the accuracy of the test results. In this embodiment, the limiting portion 21 can rotate around the connecting portion 22 to change the inclination angle of the limiting portion 21, and the angle adjustment assembly 3 can lock the limiting portion 21 so that the limiting portion 21 and the connecting portion 22 are fixed, thereby fixing the inclination angle of the limiting portion 21. By adjusting the inclination angle of the limiting portion 21 by the angle adjustment assembly 3, the rolling member 1 can roll on prints of different areas, thereby improving the accuracy of the test results. There is no need to set up multiple limiting members 2, which reduces costs.

[0058] There are various methods for achieving bidirectional rotation and locking of the limiting portion 21 about the connecting portion 22, such as a friction disc locking mechanism and a nut and screw locking mechanism. For example, the angle adjustment assembly 3 includes a first screw 31, a first nut 32, and an elastic member 33. The first screw 31 passes through the limiting portion 21 and the connecting portion 22 and protrudes from both sides of the connecting portion 22 along the first axis. The limiting portion 21 is capable of rotating about the first screw 31. The elastic member 33 is sleeved on the first screw 31 and sandwiched between the limiting portion 21 and the connecting portion 22. The first nut 32 is threadedly connected to the first screw 31.

[0059] When the angle between the limiting portion 21 and the connecting portion 22 needs to be adjusted, the first nut 32 is loosened, and the limiting portion 21 can rotate around the first screw 31. After the limiting portion 21 rotates to the required angle, the first nut 32 is tightened, and the limiting portion 21 and the connecting portion 22 clamp the elastic member 33. The elastic member 33 applies a reaction force to the limiting portion 21 and the connecting portion 22, so that the limiting portion 21 and the connecting portion 22 are fixed together.

[0060] Specifically, the connecting portion 22 is provided with a U-shaped groove, one end of the limiting portion 21 is inserted into the interior of the U-shaped groove, the first screw 31 passes through the U-shaped groove and the limiting portion 21, and the first nut 32 is sleeved on the first screw 31 and located outside the U-shaped groove. When the first nut 32 is tightened on the first screw 31, it can clamp the connecting portion 22 and the limiting portion 21. Alternatively, the limiting portion 21 is provided with a U-shaped groove, and the connecting portion 22 is arranged inside the U-shaped groove.

[0061] See also Figures 4 to 6 For ease of description, the two inner side surfaces of the U-shaped groove are respectively a first side surface 221 and a second side surface 222. First through holes are provided at corresponding positions on the first side surface 221 and the second side surface 222 for receiving the first screw 31. The limiting portion 21 is provided with a second through hole. The limiting portion 21 is located inside the U-shaped groove. The first screw 31 passes through the first through hole of the first side surface 221, the second through hole, and the first through hole of the second side surface 222 in sequence. The limiting portion 21 and the connecting portion 22 are fixed together by the first screw 31, and the limiting portion 21 can rotate bidirectionally around the axis of the first screw 31.

[0062] The elastic member 33 is sleeved onto the first screw 31. One or more elastic members 33 can be provided. For example, two elastic members 33 are provided, one of which is sandwiched between the first side surface 221 and the stopper 21, and the other between the second side surface 222 and the stopper 21. As the first nut 32 is tightened around the first screw 31, the elastic member 33 is subjected to the squeezing force of the U-shaped groove and the stopper 21, which provides a reaction force to the stopper 21, clamping the stopper 21 in the U-shaped groove. The elastic member 33 can be an existing elastic gasket for ease of availability.

[0063] In this embodiment, a scale is fixedly provided on the connecting portion 22, and an arrow that can indicate the scale is fixedly provided on the limiting portion 21. When the limiting portion 21 and the connecting portion 22 are at different angles, the arrow indicates different positions of the scale, so as to accurately adjust the angle between the limiting portion 21 and the connecting portion 22. The scale has a range of 0-360°. In order to improve the operating convenience of the textile printing fastness testing device, the limiting portion 21 can rotate around the connecting portion 22 within a set angle range. In this embodiment, the limiting portion 21 is a limiting plate, and the angle between the plane where the limiting plate is located and the mounting surface 112 is 0-90 degrees, that is, the limiting portion 21 can be locked at any angle between 0-90 degrees.

[0064] The end of the stopper 21 facing away from the connection 22 has rounded corners to prevent injuries to the operator. A buffer can be installed on the end of the stopper 21 facing away from the connection 22 to reduce the forces acting on the textile and provide some protection. This also prevents injuries from being caused by the stopper 21 and the printing being distorted, resulting in more accurate test results.

[0065] Example 3

[0066] Figure 7 Embodiment 3 is shown, in which the parts that are the same as or corresponding to those in embodiment 1 are marked with the corresponding reference numerals in embodiment 1. For the sake of simplicity, only the differences between embodiment 3 and embodiment 1 are described. The difference is that a height adjustment component 4 is provided between the connecting portion 22 and the rolling portion 11, and the height adjustment component 4 is capable of changing the distance between the connecting portion 22 and the mounting surface 112. The height adjustment component 4 can adjust the position of the connecting portion 22 relative to the rolling portion 11 in the vertical direction, that is, change the distance between the lowermost edge of the limiting portion 21 and the lowermost edge of the rolling portion 11, and then adjust the rolling range of the rolling portion 11. The height adjustment component 4 fixes the connecting portion 22 at a certain height position to ensure the limiting effect of the limiting portion 21 on the rolling portion 11.

[0067] There are various height adjustment assemblies 4 that enable the connection portion 22 to move vertically and be locked, such as a hydraulically driven plunger-cylinder mechanism, a pneumatically driven plunger-cylinder mechanism, and a screw-nut locking mechanism. For example, the height adjustment assembly 4 includes a second screw 41 and two second nuts 42. The second screw 41 passes through the connection portion 22 and is threadedly connected to the rolling portion 11. The two second nuts 42 are threadedly connected to the second screw 41, and the connection portion 22 is sandwiched between the two second nuts 42.

[0068] When the connecting portion 22 needs to be moved upward, the two second nuts 42 located above the connecting portion 22 are rotated so that the second nuts 42 move upward along the second screw 41. The operator moves the connecting portion 22 upward along the second screw 41 to the first set height position. Then, the two second nuts 42 located below the connecting portion 22 are rotated so that the second nuts 42 are located below the connecting portion 22 to support the connecting portion 22. Finally, the two second nuts 42 located above the connecting portion 22 are tightened so that the connecting portion 22 is clamped between the second nuts 42, ensuring that the connecting portion 22 is fixed at the first set height position.

[0069] Specifically, mounting holes are provided at corresponding positions of the rolling portion 11 and the connecting portion 22 for placing the second screw 41. There may be one mounting hole or multiple mounting holes. For ease of description, the mounting hole provided on the rolling portion 11 is referred to as the first mounting hole, and the mounting hole provided on the connecting portion 22 is referred to as the second mounting hole. Figure 7 In this embodiment, two first mounting holes are provided, and the two first mounting holes are spaced apart on the mounting surface 112 of the rolling part 11. A second screw 41 is provided in each of the two first mounting holes, and the second screw 41 is fixedly connected to the first mounting hole and extends upward in the vertical direction. Two second nuts 42 are screwed on each second screw 41. The connecting part 22 is provided with two second mounting holes, and the connecting part 22 is sleeved on the two second screws 41 through the second mounting holes and clamped between the two second nuts 42 in the vertical direction. The second nut 42 above the rotating connecting part 22 moves upward, the movable connecting part 22 moves upward along the second screw 41, and the second nut 42 below the rotating connecting part 22 moves upward, so that the second nut 42 clamps the connecting part 22 in the vertical direction. The second nut 42 and the second screw 41 are screwed together to fix the connecting part 22 at any position of the second screw 41. The two second screw rods 41 support the connection portion 22 more stably, reducing the probability that the second nut 42 and the second screw rod 41 are stuck due to the tilting of the connection portion 22 .

[0070] In the absence of contradiction, the technical solutions of the above-mentioned embodiment 2 and embodiment 3 can be combined. Under the premise that the angle between the plane where the limiting portion 21 is located and the mounting surface 112 can be adjusted, the vertical height of the connecting portion 22 relative to the mounting surface 112 can be adjusted, so that the methods of adjusting the rolling range of the rolling portion 11 are diversified. When the area of ​​the print is less than 10cm*10cm, the vertical height of the connecting portion 22 relative to the mounting surface 112 and / or the angle between the plane where the limiting portion 21 is located and the mounting surface 112 can be increased to reduce the rolling range of the rolling portion 11, thereby further improving the convenience of operation. For prints with an area greater than 10cm*10cm and less than 10cm*40cm, the vertical height of the connecting portion 22 relative to the mounting surface 112 and / or the angle between the plane where the limiting portion 21 is located and the mounting surface 112 can be increased to expand the rolling range of the rolling portion 11, thereby ensuring that the rolling portion 11 can fully roll the print and improve the test accuracy.

[0071] Example 4

[0072] This embodiment provides a method for testing the fastness of textile prints, using a textile print fastness testing device according to any of the above embodiments, comprising: step 1: flattening a test sample on a test platform, the test sample comprising a fabric and a print arranged on the fabric; step 2: laying an adhesive layer on the rolling surface 111 of the rolling member 1, wherein both sides of the adhesive layer are sticky; step 3: the operator holds the handheld portion 12 and places the rolling member 1 on the print, and operates the handheld portion 12 to cause the rolling portion 11 to reciprocate around a first axis, and when the rolling portion 11 reciprocates, The limiting part 21 rotates with the rolling part 11 until it contacts the cloth, limiting the rolling part 11 from continuing to roll, and repeating this cycle so that the rolling part 11 rolls in the printing area; in the process of the rolling part 11 rolling back and forth, the adhesive layer repeatedly adheres to and separates from the printing, and the adhesive layer pulls the printing away from the cloth in the process of separating from the printing; when the rolling part 11 rolls back and forth for the first set number of times, stop rolling and observe the shedding of the printing; Step 4: Replace the rolling part 1 of different quality, repeat steps 2 and 3, and then evaluate the firmness of the printing.

[0073] In step 1, the test platform is an existing platform with a plane and a clamping mechanism. After the test sample is flattened and laid on the test platform, the test sample is clamped with the clamping mechanism to ensure that the test sample will not shift during the test process, thereby improving the accuracy of the test results.

[0074] In step 2, the adhesive layer can be an existing double-sided adhesive tape, such as adhesive tape (oil-based double-sided adhesive tape), emulsion adhesive tape (water-based double-sided adhesive tape), hot melt adhesive tape, calendering adhesive tape and reactive adhesive tape.

[0075] In step 3, the handheld portion 12 is provided with a cushioning layer to improve the operator's grip comfort. The first set number of times can be 15-45 times, such as 15 times, 20 times, 25 times, 30 times, 35 times, 40 times or 45 times, preferably 30 times.

[0076] In step 4, the roller 1 is replaced with one of a different mass. This can be done by replacing the entire roller 1 or replacing the counterweight. By installing counterweights of varying mass on the roller 1 and / or the stopper 2, the mass can be varied. The print is observed for any signs of detachment. If any detachment occurs, the print is considered unsatisfactory; if not, the print is considered acceptable.

[0077] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A textile printing fastness testing device, characterized in that: include: A rolling member (1) comprises a rolling portion (11) and a hand-held portion (12), wherein at least a portion of the outer peripheral surface of the rolling portion (11) forms a rolling surface (111), the rolling surface (111) extending in an arc shape around a first axis, and the hand-held portion (12) is connected to the rolling portion (11) and protrudes from both ends of the rolling portion (11) along the first axis. a limiting member (2) connected to the rolling portion (11), the limiting member (2) comprising two limiting portions (21), the limiting portions (21) being provided on both sides of the rolling portion (11) in a radial direction, the limiting portions (21) extending downwardly in an inclined manner relative to the rolling portion (11), the lowermost edge of the limiting portion (21) being higher than the lowermost edge of the rolling portion (11); The limiting member (2) further comprises a connecting portion (22), the limiting portion (21) being connected to the connecting portion (22), the top of the rolling portion (11) forming a horizontally extending mounting surface (112), and the connecting portion (22) being fixedly connected to the mounting surface (112); The limiting portion (21) is rotatably connected to the connecting portion (22) and is locked by an angle adjustment assembly (3); the angle between the limiting portion (21) and the connecting portion (22) is adjustable to change the inclination angle of the limiting portion (21); A height adjustment component (4) is provided between the connecting portion (22) and the rolling portion (11), and the height adjustment component (4) is capable of changing the distance between the connecting portion (22) and the mounting surface (112).

2. The textile printing fastness testing device according to claim 1, characterized in that: The angle adjustment assembly (3) comprises a first screw (31), a first nut (32) and an elastic member (33); the first screw (31) is passed through the limiting portion (21) and the connecting portion (22) and protrudes from both sides of the connecting portion (22) along the first axis direction; the limiting portion (21) is capable of rotating around the first screw (31); the elastic member (33) is sleeved on the first screw (31) and clamped between the limiting portion (21) and the connecting portion (22); and the first nut (32) is threadedly connected to the first screw (31).

3. The textile printing fastness testing device according to claim 1, characterized in that: The limiting portion (21) is a limiting plate, and the angle between the plane where the limiting plate is located and the mounting surface (112) is 0-90 degrees.

4. The textile printing fastness testing device according to claim 1, characterized in that: The height adjustment assembly (4) comprises a second screw (41) and two second nuts (42), wherein the second screw (41) is passed through the connecting portion (22) and is threadedly connected to the rolling portion (11), the two second nuts (42) are threadedly connected to the second screw (41), and the connecting portion (22) is sandwiched between the two second nuts (42).

5. The textile printing fastness testing device according to claim 1, characterized in that: The rolling member (1) and / or the limiting member (2) are provided with a counterweight block, and the counterweight block is detachable.

6. The textile printing fastness testing device according to any one of claims 1 to 5, characterized in that: The hand-held portion (12) is fixedly connected to the rolling portion (11); or, the hand-held portion (12) is connected to the rolling portion (11) via a bearing (13).

7. A method for testing the fastness of textile printing, characterized in that: The textile printing fastness testing device according to any one of claims 1 to 6 comprises: Step 1: Lay the test sample flat on a test platform. The test sample includes the fabric and the print on the fabric. Step 2: Laying an adhesive layer on the rolling surface (111) of the rolling member (1), wherein both sides of the adhesive layer are sticky; Step 3: The operator holds the handheld portion (12) and places the rolling member (1) on the printed surface. The handheld portion (12) is operated to cause the rolling portion (11) to roll back and forth around the first axis. The limiting portion (21) rotates along with the rolling portion (11) until it contacts the fabric, thereby limiting the rolling portion (11) from continuing to roll. This cycle is repeated, so that the rolling portion (11) rolls in the printed area. During the reciprocating rolling of the rolling portion (11), the adhesive layer repeatedly adheres to and separates from the printing, and during the process of separating from the printing, the adhesive layer pulls the printing away from the fabric; When the rolling portion (11) reciprocates and rolls for a first set number of times, the rolling is stopped and the shedding of the printed print is observed; Step 4: Replace the roller (1) with one of different qualities and repeat steps 2 and 3 to evaluate the fastness of the print.

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