A device for testing the ironing fastness of paint

Abstract

This utility model relates to a coating ironing fastness testing device, which includes a frame, an asbestos board mounted on the frame, a white cotton cloth placed on the top surface of the asbestos board, a heating plate, and an ironing plate placed on the bottom surface of the heating plate. It also includes a screw lifting mechanism mounted on the frame, a planar four-bar linkage at the moving end of the screw lifting mechanism, and a mounting base installed on the flipping end of the planar four-bar linkage via an elastic connector. The heating plate is mounted on the mounting base, and the flipping path of the ironing plate passes through the surface of the asbestos board. This utility model uses the screw lifting mechanism to pre-adjust the ironing force of the ironing plate on the sample cloth, and after pressing down on the planar four-bar linkage, the compression and extension of the elastic connector buffers the force applied by the operator, avoiding excessive pressure fluctuations. This ensures approximately consistent ironing force, reduces the influence of human factors on the test results, and improves the accuracy of the test results.

Description

Technical Field

[0001] This utility model relates to the technical field of printing coating manufacturing, and in particular to a coating ironing fastness testing device. Background Technology

[0002] Ironing fastness is an important indicator for evaluating the color stability of printed patterns under high-temperature ironing conditions. The testing method primarily involves using a heating device with a temperature set according to the fabric type (e.g., 180℃ for polyester, 150℃ for acrylic, and 210℃ for cotton), treating the sample at 4±1 kPa for 30 seconds, and rating it based on the degree of color change in the fabric and the staining of the lining fabric. The industry uses a rating standard of 1-5 (5 being the best), and conventional fabrics need to achieve a level of 3-4 to meet wear requirements. This indicator is affected by factors such as dye heat resistance, fabric fiber structure, and heat setting process parameters. Performance can be improved by selecting high-temperature dyes, optimizing post-treatment processes, and controlling the heat setting temperature.

[0003] Chinese Patent CN208705214U discloses an ironing sublimation color fastness tester, including a base. A slide rail is fixedly mounted on the top of the base. Limiting blocks are fixedly mounted on the top of the base and on both sides of the slide rail. A slider is slidably connected to the top of the slide rail. A lower base plate is fixedly mounted on the top of the slider. A lever is fixedly mounted on the right side of the lower base plate. An asbestos board is fixedly mounted on the top of the lower base plate. A white cotton cloth is fixedly mounted on the top of the asbestos board. A sample cloth is placed on top of the white cotton cloth. The top of the base and... An organic body is fixedly installed on the back of the slide rail. A fixed box is fixedly installed on the front of the organic body and on top of the sample cloth. Two telescopic sleeves are fixedly installed inside the fixed box. Telescopic rods are fixedly installed inside the telescopic sleeves. A guide plate is fixedly installed on the front of the organic body and at the bottom of the fixed box. A guide hole is opened at the top of the guide plate. A heating plate is fixedly installed on the outer side of each of the two telescopic rods. An ironing plate is fixedly installed at the bottom of the heating plate. Protective handles are fixedly installed on both sides of the ironing plate. An ironing hole is opened at the bottom of the ironing plate.

[0004] The existing technical solutions mentioned above have the following drawbacks: In the process of testing the ironing fastness of printed coatings on fabric surfaces, it is necessary to control the ironing temperature, pressure, and time for different materials to ensure that the labels adhere firmly without peeling, cracking, or wrinkling. The ironing temperature and time can be controlled by the control panel to raise and lower the temperature of the heating plate. However, the ironing pressure is greatly affected by human factors. For example, when using the ironing sublimation color fastness tester, the operator manually operates the dial and other components. Different operators have different habits and apply different amounts of force. Moreover, it is difficult for the same operator to maintain the stability of the force during multiple operations. This can lead to errors in the test results and make it impossible to accurately reflect the ironing fastness of the printed coatings under standard ironing pressure. Utility Model Content

[0005] The present invention aims to address the aforementioned shortcomings in the existing technology by providing a coating ironing fastness testing device, which has the advantages of facilitating the adjustment of ironing pressure, reducing the influence of human factors on the test results, and improving the accuracy of the test results.

[0006] The above-mentioned objective of this utility model is achieved through the following technical solution: A coating ironing fastness testing device includes a frame, an asbestos board mounted on the frame, a white cotton cloth mounted on the top surface of the asbestos board, a heating plate, and an ironing plate mounted on the bottom surface of the heating plate. It also includes a screw lifting mechanism mounted on the frame, a planar four-bar linkage mounted on the moving end of the screw lifting mechanism, and a mounting base installed on the flipping end of the planar four-bar linkage via an elastic connector. The heating plate is mounted on the mounting base, and the flipping path of the ironing plate passes through the surface of the asbestos board.

[0007] By adopting the above technical solution, in the actual testing process, the operator first uses a fabric with a uniformly coated printing coating as a sample, lays the sample flat on a white cotton cloth, and then adjusts the screw lifting mechanism according to the thickness of the sample to change the relative distance between the ironing board and the asbestos board. Next, the heating plate is activated to heat the ironing board, and the flat four-bar mechanism is pressed down, thereby forcing the ironing board to flip downward and press against the sample surface. At this time, the compression and extension of the elastic connector buffers the force of the operator's downward pressure, avoids excessive pressure fluctuations, and thus ensures that the pressing force is approximately consistent, reduces the influence of human factors on the test results, and improves the accuracy of the test results.

[0008] The present invention is further configured such that: the lead screw lifting mechanism includes a transmission lead screw rotatably connected to the frame and a transmission nut threadedly connected to the transmission lead screw; the planar four-bar linkage is slidably connected to the frame and disposed on the transmission nut.

[0009] By adopting the above technical solution, due to the sliding connection between the planar four-bar linkage and the frame, by rotating the transmission screw, the transmission nut will move linearly along the transmission screw, thereby driving the planar four-bar linkage to rise and fall on the frame. Since the transmission of the transmission screw has precision and stability, the operator can control the moving distance of the planar four-bar linkage by controlling the number of rotations and speed of the transmission screw, thereby indirectly controlling the pressing force of the ironing board on the sample cloth.

[0010] The present invention is further configured such that a first gripping part is provided on the transmission lead screw.

[0011] By adopting the above technical solution, it is easier for users to grasp and apply force.

[0012] The present invention is further configured such that: the planar four-bar linkage includes a first link, a second link, a third link, and a fourth link that are sequentially hinged end to end by a hinge member; the first link is slidably connected to the frame and disposed on the transmission nut; the end of the fourth link away from the first link extends outward and is mounted on the mounting base through the elastic connector.

[0013] By adopting the above technical solution, the first link, second link, third link and fourth link are hinged to form a closed loop structure that can rotate and deform flexibly. When the transmission nut drives the first link to move, the entire planar four-bar linkage will move accordingly, and it will not affect the fourth link from driving the mounting base, heating plate and ironing plate to rotate.

[0014] The present invention is further configured such that the hinge is a spring hinge.

[0015] By adopting the above technical solution, the use of spring hinges enables the planar four-bar mechanism to have a certain buffer and elasticity during movement, which can better adapt to different pressing conditions, further improve the stability of pressing force, and facilitate reset after the test.

[0016] The present invention is further configured such that: the end of the second link away from the second link extends outward and is provided with a second gripping part.

[0017] By adopting the above technical solution, it is easier for users to grasp and apply force.

[0018] The present invention is further configured such that: the elastic connector includes a mounting hole opened on the fourth link, a mounting shaft disposed on the mounting base, a linear bearing disposed between the mounting hole and the opening of the mounting shaft, a baffle disposed at the end of the mounting shaft, and a compression spring sleeved on the mounting shaft, wherein the two ends of the compression spring respectively abut tightly against the baffle and the linear bearing.

[0019] By adopting the above technical solution, the combination of mounting shaft, linear bearing, baffle and compression spring allows the mounting seat to buffer the downward pressure through the compression and extension of the compression spring when it is subjected to pressure, avoiding excessive pressure fluctuations and thus ensuring the accuracy of the pressing force.

[0020] The present invention is further configured such that: multiple elastic connectors are provided and are arranged at intervals from each other along the length direction of the fourth link.

[0021] By adopting the above technical solution, multiple elastic connectors are arranged at intervals along the length of the fourth link, which can evenly distribute the pressure, making the ironing board more evenly stressed during the ironing process.

[0022] In summary, the beneficial technical effects of this utility model are as follows: by pre-adjusting the pressing force of the ironing plate on the sample cloth through the screw lifting mechanism, and by using the compression and extension of the elastic connecting piece after the four-bar mechanism of the lower pressing plane to buffer the force of the operator pressing down, avoiding excessive pressure fluctuations, thereby ensuring that the pressing force is approximately consistent, reducing the influence of human factors on the test results, and improving the accuracy of the test results. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the coating ironing fastness testing device of this utility model.

[0024] Figure 2 This is a schematic diagram showing the connection relationship between the lead screw lifting mechanism and the planar four-bar linkage of this utility model.

[0025] Figure 3 This is a schematic diagram of the main structure of the coating ironing fastness testing device of this utility model.

[0026] Figure 4 This is a schematic diagram showing the connection relationship between the planar four-bar linkage, the elastic connector, and the mounting base of this utility model.

[0027] In the diagram, 1. Frame; 2. Asbestos board; 3. White cotton cloth; 4. Screw lifting mechanism; 41. Transmission screw; 42. First gripping part; 43. Transmission nut; 5. Planar four-bar linkage; 51. First connecting rod; 52. Second connecting rod; 53. Third connecting rod; 54. Fourth connecting rod; 55. Second gripping part; 6. Elastic connector; 61. Mounting hole; 62. Mounting shaft; 63. Linear bearing; 64. Baffle; 65. Compression spring; 7. Mounting base; 8. Heating plate; 9. Ironing board. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model clearer and easier to understand, the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Reference Figure 1 This utility model discloses a coating ironing fastness testing device, comprising a frame 1, an asbestos board 2 mounted on the frame 1, a white cotton cloth 3 mounted on the top surface of the asbestos board 2, a screw lifting mechanism 4 mounted on the frame 1, a planar four-bar linkage 5 mounted on the moving end of the screw lifting mechanism 4, a mounting base 7 mounted on the flipping end of the planar four-bar linkage 5 via an elastic connector 6, a heating plate 8 mounted on the mounting base 7, and an ironing plate 9 mounted on the bottom surface of the heating plate 8. The flipping path of the ironing plate 9 passes through the surface of the asbestos board 2.

[0030] In the actual testing process, the operator first uses a fabric with a uniformly coated printing coating as a sample and lays the sample flat on a white cotton cloth 3. Then, according to the thickness of the sample, the screw lifting mechanism 4 is adjusted to change the relative distance between the ironing plate 9 and the asbestos board 2. Next, the heating plate 8 is activated to heat the ironing plate 9, and the flat four-bar mechanism 5 is pressed down, thereby forcing the ironing plate 9 to flip downward and press against the sample surface. At this time, the compression and extension of the elastic connector 6 buffers the force of the operator's downward pressure, avoiding excessive pressure fluctuations, thereby ensuring that the ironing force is approximately consistent, reducing the influence of human factors on the test results, and improving the accuracy of the test results.

[0031] Reference Figure 2 The lead screw lifting mechanism 4 includes a transmission lead screw 41 rotatably connected to the frame 1, a first gripping part 42 disposed on the transmission lead screw 41, and a transmission nut 43 threadedly connected to the transmission lead screw 41. A planar four-bar linkage 5 is slidably connected to the frame 1 and disposed on the transmission nut 43. Because the planar four-bar linkage 5 and the frame 1 are slidably connected, rotating the transmission lead screw 41 causes the transmission nut 43 to move linearly along the transmission lead screw 41, thereby driving the planar four-bar linkage 5 to rise and fall on the frame 1. Due to the precision and stability of the transmission of the lead screw 41, the operator can precisely control the moving distance of the planar four-bar linkage 5 by controlling the number of rotations and speed of the lead screw 41, thereby indirectly controlling the pressing force of the ironing board 9 on the sample cloth.

[0032] Reference Figure 3 The planar four-bar linkage 5 includes a first link 51, a second link 52, a third link 53, and a fourth link 54, which are sequentially hinged end-to-end by spring hinges (not shown in the figure). The first link 51 is slidably connected to the frame 1 and is mounted on the transmission nut 43. The end of the second link 52 away from the first link 51 extends outward and is provided with a second gripping part 55. The end of the fourth link 54 away from the first link 51 extends outward and is mounted on the mounting base 7 via an elastic connector 6.

[0033] Reference Figure 4Multiple elastic connectors 6 are arranged at intervals along the length of the fourth link 54. Each connector includes a mounting hole 61 on the fourth link 54, a mounting shaft 62 on the mounting base 7, a linear bearing 63 between the mounting hole 61 and the opening of the mounting shaft 62, a baffle 64 at the end of the mounting shaft 62, and a compression spring 65 sleeved on the mounting shaft 62. The two ends of the compression spring 65 are tightly abutted against the baffle 64 and the linear bearing 63, respectively. The multiple elastic connectors 6, arranged at intervals along the length of the fourth link 54, can evenly distribute pressure, making the ironing board 9 experience more uniform force during ironing. The combination of the mounting shaft 62, linear bearing 63, baffle 64, and compression spring 65 allows the mounting base 7 to buffer downward pressure through the compression and extension of the compression spring 65 when subjected to pressure, preventing excessive pressure fluctuations and ensuring the accuracy of the ironing force.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A coating ironing fastness testing device, comprising a frame (1), an asbestos board (2) disposed on the frame (1), a white cotton cloth (3) disposed on the top surface of the asbestos board (2), a heating plate (8), and an ironing plate (9) disposed on the bottom surface of the heating plate (8), characterized in that: It also includes a screw lifting mechanism (4) disposed on the frame (1), a planar four-bar linkage (5) disposed on the moving end of the screw lifting mechanism (4), and a mounting base (7) mounted on the flipping end of the planar four-bar linkage (5) via an elastic connector (6). The heating plate (8) is disposed on the mounting base (7), and the flipping path of the ironing plate (9) passes through the surface of the asbestos board (2).

2. The coating ironing fastness testing device according to claim 1, characterized in that: The lead screw lifting mechanism (4) includes a transmission lead screw (41) rotatably connected to the frame (1) and a transmission nut (43) threadedly connected to the transmission lead screw (41). The planar four-bar linkage (5) is slidably connected to the frame (1) and disposed on the transmission nut (43).

3. The coating ironing fastness testing device according to claim 2, characterized in that: The transmission screw (41) is provided with a first gripping part (42).

4. The coating ironing fastness testing device according to claim 3, characterized in that: The planar four-bar linkage (5) includes a first link (51), a second link (52), a third link (53), and a fourth link (54) that are hinged together at their ends. The first link (51) is slidably connected to the frame (1) and is mounted on the transmission nut (43). The end of the fourth link (54) away from the first link (51) extends outward and is mounted on the mounting base (7) through the elastic connector (6).

5. The coating ironing fastness testing device according to claim 4, characterized in that: The hinge is a spring hinge.

6. A paint scorch detection apparatus as claimed in claim 4, wherein: The end of the second link (52) away from the second link (52) extends outward and is provided with a second grip (55).

7. The coating ironing fastness testing device according to claim 4, characterized in that: The elastic connector (6) includes a mounting hole (61) on the fourth link (54), a mounting shaft (62) on the mounting base (7), a linear bearing (63) between the mounting hole (61) and the opening of the mounting shaft (62), a baffle (64) at the end of the mounting shaft (62), and a compression spring (65) sleeved on the mounting shaft (62). The two ends of the compression spring (65) are respectively in close contact with the baffle (64) and the linear bearing (63).

8. The coating ironing fastness testing device according to claim 7, characterized in that: The elastic connector (6) is provided in a plurality of such connectors, which are spaced apart from each other along the length of the fourth link (54).

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