A paint film scribing machine

Abstract

The utility model provides a kind of lacquer film griding machine, including the clamping assembly for clamping lacquer film sample and the griding assembly suspended above clamping assembly;Lacquer film sample can be laid on the locating surface on clamping assembly, clamping assembly can rotate along the rotation axis perpendicular to locating surface;Griding assembly includes fixed seat capable of horizontal movement relative to locating surface, vertical lifting, fixed seat is slidably connected with mounting plate along gravity direction, mounting plate bottom side is provided with blade, and mounting plate top side is provided with constant weight block.The utility model can reduce cost on the basis of solving the unevenness of manual griding strength, length and perpendicularity error is large, ensure machine stable and simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of paint film adhesion testing technology, specifically to a paint film cross-cutting machine. Background Technology

[0002] With the development of materials technology, people have discovered and synthesized many organic coatings, greatly enriching the types and functions of coatings. The adhesion of coatings is one of the important indicators for evaluating the quality of coatings. Specifically, after organic coatings are applied to the surface of materials, in order to ensure that the organic coatings will not easily fall off the surface of the materials, it is necessary to conduct coating adhesion tests. The commonly used adhesion testing method is to draw straight and uniform grooves on the surface of organic coatings, and then rate them according to the state of the cut edges.

[0003] Traditionally, a cross-cut tester is used, employing an auxiliary tool to manually draw the grid. The force applied during the grid-cutting process relies entirely on manual control, and the process is based on experience and habit, resulting in poor stability and inconsistencies in the force applied each time. This leads to inaccurate test results. Furthermore, because it is impossible to ensure that the blade is perpendicular to the test plate during manual grid-cutting, the depth to which the blade cuts into the test plate is inconsistent, resulting in inconsistent cross-sections and inaccurate test results. To solve these problems, a paint film cross-cut tester has been developed, which can eliminate the problems of arm tremors and uneven pressure during manual operation.

[0004] Existing paint film cross-cutting machines can ensure that the cross-cutting machine and the test plate remain perpendicular. However, although using a motor to drive the blades for cross-cutting is more stable, repeatable, and efficient than manual cross-cutting, it has the problems of high cost and technical complexity, and requires a certain level of skill from the user. Therefore, there is an urgent need to provide a paint film cross-cutting machine that is cost-effective and simple to use. Utility Model Content

[0005] This invention overcomes the shortcomings of the prior art and provides a paint film scribing machine that can reduce costs, ensure machine stability, and is simple and convenient while solving the problems of inconsistent scribing force, large errors in length and perpendicularity in manual scribing.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a paint film scribing machine, comprising a clamping assembly for clamping a paint film sample and a scribing assembly suspended above the clamping assembly; The paint film sample can be laid flat on the positioning surface of the clamping assembly, and the clamping assembly can rotate along a rotation axis perpendicular to the positioning surface; The grid assembly includes a fixed base that can move horizontally and rise vertically relative to the positioning surface. A mounting plate is slidably connected to the fixed base along the direction of gravity. A blade is provided on the bottom side of the mounting plate, and a constant weight block is provided on the top side of the mounting plate.

[0007] Preferably, the mounting plate is provided with a groove for movably embedding the constant weight block.

[0008] Preferably, the bottom side of the mounting plate is provided with a blade holder for mounting the blade.

[0009] Preferably, the fixed base is connected to the output end of linear drive unit one, the linear drive unit one is connected to the output end of linear drive unit two, the linear drive unit two drives the linear drive unit one to move horizontally, and the linear drive unit one is used to drive the fixed base to move vertically.

[0010] Preferably, two guide posts are movably inserted through the fixed base along the direction of gravity. The guide posts pass through the fixed base and are fixedly connected to the mounting plate. A limiting block that can overlap the top side of the fixed base is sleeved on the outer periphery of the section of the guide post that does not pass through the fixed base.

[0011] Preferably, a rubber pad is provided on the side of the fixing base facing the mounting plate.

[0012] Preferably, the clamping assembly includes a sample holder with the positioning surface and two pressure plates detachably connected to the sample holder. When the paint film sample is laid flat on the positioning surface, the pressure plates can press down on the paint film sample until it fits against the positioning surface.

[0013] Preferably, the pressure plate has two symmetrical through holes along its middle section for inserting locking screws, and one end of the locking screw passing through the through hole can be threaded to the sample holder.

[0014] Preferably, the clamping assembly is connected to the output end of the rotary platform.

[0015] Preferably, the clamping assembly, the dividing assembly, the rotating platform, and the second linear drive unit are all disposed on the base, and the fixed seat moves relative to the base via the second linear drive unit.

[0016] This utility model solves the defects existing in the background technology, and the beneficial effects of this utility model are as follows: In this invention, a fixed base drives the blade to move horizontally and rise and fall vertically relative to the positioning surface. Combined with a clamping assembly that can rotate along a fixed axis, the blade can flexibly scribble lines on the paint film sample laid flat on the positioning surface. This solves the problems of inconsistent scribing force and large errors in length and perpendicularity during manual scribing. During the scribing process, the fixed base can drive the blade tip to contact the surface of the paint film sample, ensuring that the pressure exerted by the blade tip on the sample surface is provided solely by the weight of the constant weight block, mounting plate, and other structures. By replacing constant weight blocks of different weights, the pressure exerted by the blade tip on the paint film sample can be adjusted. This method is low-cost, easy to operate, and ensures machine stability, offering high cost-effectiveness. In this invention, by providing a groove on the mounting plate, the bottom of the constant weight block can be stably positioned within the groove, ensuring the stability of the constant weight block's position while also preventing it from slipping off the fixed base during displacement. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of the paint film scribing machine in a preferred embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of the clamping assembly and the rotating platform in a preferred embodiment of the present invention; Figure 3 This is a schematic diagram of the grid component in a preferred embodiment of the present invention.

[0019] Among them, 1. clamping assembly; 101. sample holder; 102. pressure plate; 103. through hole; 104. locking screw; 2. Rotating platform; 201. Mounting base; 3. Grid-cutting assembly; 301. Blade; 302. Constant weight block; 303. Mounting plate; 331. Groove; 304. Linear drive unit one; 305. Guide post; 306. Fixing base; 307. Blade holder; 308. Rubber pad; 309. Limiting block; 4. Linear drive unit two; 5. Base; 501. Control touch screen. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] Example 1, as Figure 1As shown, a paint film scribing machine includes a clamping component 1 for clamping a paint film sample and a scribing component 3 suspended above the clamping component 1. The clamping component 1 can clamp and fix the paint film sample, and the scribing component 3 can scribing the paint film sample.

[0022] Furthermore, the paint film sample can be laid flat on the positioning surface of the clamping assembly 1, and the clamping assembly 1 can rotate along a rotation axis perpendicular to the positioning surface; the dividing assembly 3 includes a fixed seat 306 that can move horizontally and rise vertically relative to the positioning surface, and a mounting plate 303 is slidably connected to the fixed seat 306 along the direction of gravity, a blade 301 is provided on the bottom side of the mounting plate 303, and a constant weight block 302 is provided on the top side of the mounting plate 303.

[0023] Specifically, the blade 301 is driven to move horizontally and rise vertically relative to the positioning surface by the fixed base 306, and with the cooperation of the clamping component 1 which can rotate along the fixed rotation axis, the blade 301 can flexibly scribing the paint film sample laid flat on the positioning surface. By setting a constant weight block 302 on the fixed base 306 and setting a mounting plate 303 between the fixed base 306 and the blade 301, the pressure of the blade on the surface of the paint film sample is provided only by the self-weight of the constant weight block 302, the mounting plate, the mounting plate 303, etc., thereby solving the problems of inconsistent scribing force and large errors in length and perpendicularity.

[0024] Specifically, the constant weight block 302 is a constant weight block, which is an object that can provide stable and measurable weight. The constant weight block 302 is a weight or a standard metal counterweight block. The constant weight block 302 applies force to the blade 301, so that the blade 301 can move to the appropriate position for cutting the paint film sample. The appropriate constant weight block 302 can be selected according to different sample requirements, which is convenient to operate, low in cost, and can ensure the stability of the machine and has a high cost performance.

[0025] like Figure 2 As shown, the clamping assembly 1 is connected to the output end of the rotating platform 2. The rotating platform 2 is a mechanical device in the prior art that can rotate 360° around a fixed axis and stop at any precise angle. It should be noted that in this embodiment, the rotating platform 2 can be replaced by a rotating cylinder.

[0026] Specifically, firstly, the paint film sample is clamped and fixed using the clamping assembly 1; then, the scribing assembly 3 is activated to scribble the paint film sample. The scribing assembly 3 includes a fixed base 306 that can move horizontally and vertically relative to the positioning surface. The fixed base 306 drives the blade 301 to move horizontally relative to the positioning surface, and the constant weight block 302 applies force to make the blade 301 descend vertically to scribble the paint film sample. After the paint film sample is fixed, the blade 301 scribbles the paint film sample. After scribing in the first direction, the paint film sample scribed in the first direction is rotated 90 degrees to the second direction using the rotating platform 2. The second direction is the same as the first direction. There is an angle between the two directions, the angle is 90 degrees. Rotate to the second direction and continue to scribing the paint film sample. After completion, rotate the paint film sample again to scribing the paint film sample until the scribing of the paint film sample is completed. After fixing the paint film sample, the blade 301 scribing the paint film sample. After scribing in the first direction, use the rotary cylinder to rotate the paint film sample that has been scribed in the first direction by 90 degrees to the second direction. There is an angle between the second direction and the first direction, the angle is 90 degrees. Rotate to the second direction and continue to scribing the paint film sample. After completion, use the rotary cylinder to reset the paint film sample to complete the scribing of the paint film sample.

[0027] Specifically, when the rotating platform 2 is used to reverse the direction of the paint film sample, the path of the blade 301 scribes the paint film sample is not the mid-bend line of the paint film sample. When the blade 301 scribes the paint film sample in the first direction, the blade 301 is close to the first side of the paint film sample. After the rotating platform 2 rotates the paint film sample 90 degrees to the second direction, the blade 301 is close to the second side of the paint film sample. Then, when the paint film sample is rotated to scribe the paint film sample, the blade 301 is close to the third side and the fourth side of the paint film sample in sequence to complete the scribe. When reversing the direction of the paint film sample using a rotary cylinder, the path of the blade 301 scribes the paint film sample along the mid-bend line of the paint film sample. After the blade 301 has scribed the paint film sample in the first direction, the rotary cylinder rotates the paint film sample 90 degrees to the second direction, and the blade 301 scribes the paint film sample again. At this time, the path of the blade 301 scribes the paint film sample along the mid-bend line of the paint film sample. After scribing the sample, the rotary cylinder is used to reset the paint film sample from the second direction to the first direction, and the scribe is completed.

[0028] like Figure 2 As shown, specifically, the rotating platform 2 is connected to the mounting base 201, the sample holder 101 is fixedly connected to the mounting base 201, and the mounting base 201 is connected to the output end of the rotating platform 2.

[0029] like Figure 3As shown, the mounting plate 303 is further provided with a groove 331 for the movable embedding of the constant weight block 302, which can ensure that the constant weight block 302 provides a stable force while not easily shifting its position, thereby improving the stability of the device. In addition, the bottom side of the mounting plate 303 is provided with a blade holder 307 for mounting the blade 301. The blade holder 307 and the blade 301 are connected by a snap-fit ​​or screw, so as to flexibly replace different types of blades 301 according to different paint film samples, thereby improving the applicability of the cross-cutting machine.

[0030] like Figure 3 As shown, the fixed base 306 is further connected to the output end of the linear drive unit 304, which can drive the fixed base 306 to rise and fall vertically, thereby raising the height of the blade 301. The linear drive unit 304 is connected to the output end of the linear drive unit 4, which can drive the linear drive unit 304 to move horizontally, so as to drive the blade 301 to move linearly along a fixed trajectory. In actual use, the blade 301 can fall onto the surface of the paint film sample placed on the positioning surface under the coordinated drive of the linear drive unit 304 and the linear drive unit 4, and can scratch a uniformly deep scratch on the surface of the paint film sample under the action of the constant weight block 302.

[0031] Specifically, linear drive unit 1 304 is a single-acting cylinder, and linear drive unit 2 4 is a lead screw slide.

[0032] like Figure 3 As shown, specifically, two guide posts 305 are movably inserted through the fixed base 306 along the direction of gravity. The guide posts 305 pass through the fixed base 306 and are fixedly connected to the mounting plate 303. The outer periphery of the section of the guide post 305 that does not pass through the fixed base 306 is fitted with a limiting block 309 that can overlap the top side of the fixed base 306. When the blade 301 is pressed down vertically, it guides the blade 301 and improves the structural stability of the testing machine.

[0033] like Figure 3 As shown, specifically, a rubber pad 308 is provided on the side of the fixed base 306 facing the mounting plate 303. The rubber pad 308 is used to provide buffering force, provide a buffer zone for the blade 301, prevent the blade 301 from continuously pressing down and causing damage to the paint film sample, prevent the fixed base 306 from directly contacting the mounting plate 303, causing the position of the constant weight block 302 to shift, protect the blade 301, and prevent the blade 301 from vibrating and causing inconsistent grading force. After the blade 301 descends vertically to the point of close contact with the paint film sample, the blade 301 continues to descend vertically. The guide post 305 is slidably connected to the fixed base 306, driving the mounting plate 303 to rise along the direction of gravity, thus preventing damage to the paint film sample.

[0034] like Figure 2As shown, specifically, the clamping assembly 1 includes a sample holder 101 with a positioning surface and two pressure plates 102 detachably connected to the sample holder 101. When the paint film sample is laid flat on the positioning surface, the pressure plates 102 can press down the paint film sample to fit against the positioning surface.

[0035] Specifically, the paint film sample is placed on the positioning surface of the sample holder 101, and two pressure plates 102 are placed on both sides of the sample holder 101 respectively. The paint film sample is pressed down until it fits against the positioning surface, thereby fixing the paint film sample and facilitating subsequent grid marking.

[0036] like Figure 2 As shown, specifically, two through holes 131 for passing through the middle of the pressure plate 102 are symmetrically arranged, which are used to pass through the locking screw 133. One end of the locking screw 133 passing through the through hole can be threaded to the sample holder 101. After the paint film sample is placed and the pressure plate 102 is placed, the locking screw 104 passes through the through hole 103 and cooperates with the sample holder 101 to lock the pressure plate 102 and the sample holder 101, thus fixing the paint film sample. The position of the pressure plate 102 can be adjusted according to the length of the paint film sample through the through hole 103 and the elongated hole, thereby improving the applicability of the scribing machine.

[0037] Example 2 is an improvement on Example 1. This example provides a second linear drive unit 4 for driving the gridding component 3: a second linear drive unit 4 for driving the fixed base 306 is provided on one side of the gridding component 3. The second linear drive unit 4 can drive the gridding component 3 to move stably and draw lines. See details below. Figure 1 .

[0038] Specifically, the linear drive unit 24 is a lead screw module moving structure driven by a motor.

[0039] In embodiment 3, the clamping assembly 1, the dividing assembly 3, the rotating platform 2, and the linear drive unit 4 are all mounted on the base 5. The fixed base 306 moves relative to the base 5 via the linear drive unit 4. See details below. Figure 1 .

[0040] Specifically, a control touch screen 501 is provided on the base 5, and a main controller is provided inside the base 5. The main controller is a conventional known device such as a computer that is used for control.

[0041] Specifically, the operator controls the touchscreen 501 to set the line length and movement speed according to the paint film sample, and records and saves the total number of samples for later retrieval and comparison.

[0042] Working principle: During preparation, the paint film sample is first clamped and fixed by the clamping component 1; then the linear drive unit 304 is started to drive the fixing seat 306 and the blade 301 to rise vertically above the paint film sample. The blade 301 does not contact the paint film sample. Then, the linear drive unit 304 is moved to the place where the blade 301 starts to scribing by the linear drive unit 4.

[0043] During the scribing process, a constant weight block 302 applies force to cause the blade 301 to descend vertically to a suitable position. The linear drive unit 2 moves the linear drive unit 1 304, driving the blade 301 to scribble on the paint film sample. The blade 301 scribbles on the paint film sample through the cooperation of the rotating platform 2, the linear drive unit 1 304, and the linear drive unit 2. After the paint film sample is fixed, the blade 301 scribbles on the paint film sample. After scribing in the first direction, the linear drive unit 1 304 is activated to raise the fixing seat 306 and the blade 301. The blade 301 does not contact the paint film sample. The rotating platform 2 rotates the paint film sample that has been scribbled in the first direction by 90 degrees to the second direction. The second direction has an angle of 90 degrees with the first direction. After rotating to the second direction, the constant weight block 302 applies force to cause the blade 301 to descend vertically to a suitable position to continue scribing on the paint film sample. After completion, the above operation is repeated to scribble on the paint film sample until the scribing of the paint film sample is completed.

[0044] After marking, the linear drive unit 304 is used to lift the fixed base 306 and the blade 301. The blade 301 does not contact the paint film sample. The paint film sample is then removed, and the marking is completed.

[0045] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A paint film scribing machine, characterized in that: It includes a clamping assembly (1) for holding a paint film sample and a grid assembly (3) suspended above the clamping assembly (1). The paint film sample can be laid flat on the positioning surface of the clamping assembly (1), and the clamping assembly (1) can rotate along a rotation axis perpendicular to the positioning surface; The grid assembly (3) includes a fixed base (306) that can move horizontally and rise vertically relative to the positioning surface. A mounting plate (303) is slidably connected to the fixed base (306) along the direction of gravity. A blade (301) is provided on the bottom side of the mounting plate (303), and a constant weight block (302) is provided on the top side of the mounting plate (303).

2. The paint film scribing machine according to claim 1, characterized in that: The mounting plate (303) is provided with a groove (331) for movably embedding the constant weight block (302).

3. The paint film scribing machine according to claim 2, characterized in that: The mounting plate (303) has a tool holder (307) for mounting the blade (301) on its bottom side.

4. The paint film scribing machine according to claim 3, characterized in that: The fixed base (306) is connected to the output end of the linear drive unit one (304), the linear drive unit one (304) is connected to the output end of the linear drive unit two (4), the linear drive unit two (4) drives the linear drive unit one (304) to move horizontally, and the linear drive unit one (304) is used to drive the fixed base (306) to move vertically.

5. The paint film scribing machine according to claim 4, characterized in that: Two guide posts (305) are movably inserted through the fixed base (306) along the direction of gravity. The guide posts (305) pass through the fixed base (306) and are fixedly connected to the mounting plate (303). A limiting block (309) that can overlap the top side of the fixed base (306) is sleeved on the outer periphery of the section of the guide post (305) that does not pass through the fixed base (306).

6. The paint film scribing machine according to claim 5, characterized in that: A rubber pad (308) is provided on the side of the fixing base (306) facing the mounting plate (303).

7. The paint film scribing machine according to claim 6, characterized in that: The clamping assembly (1) includes a sample holder (101) with the positioning surface and two pressure plates (102) detachably connected to the sample holder (101). When the paint film sample is laid flat on the positioning surface, the pressure plates (102) can press down the paint film sample to fit against the positioning surface.

8. The paint film scribing machine according to claim 7, characterized in that: The pressure plate (102) has two symmetrical through holes (103) along its middle section for passing through locking screws (104). One end of the locking screw (104) passing through the through hole can be threaded to the sample holder (101).

9. The paint film scribing machine according to claim 8, characterized in that: The clamping assembly (1) is connected to the output end of the rotating platform (2).

10. The paint film scribing machine according to claim 9, characterized in that: The clamping assembly (1), the gridding assembly (3), the rotating platform (2) and the second linear drive unit (4) are all mounted on the base (5), and the fixed seat (306) moves relative to the base (5) via the second linear drive unit (4).

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