Novel cross-cut knife for coating testing

Abstract

The utility model discloses a novel cross-cut knife for coating testing, which comprises a handle, the top of the handle is provided with a telescopic piece, the top of the telescopic piece is provided with a knife rest, the knife rest is rotatably provided with two rotatable installation pieces, a knife roller is detachably installed between the two installation pieces, and the knife roller is provided with a knife handle. And four blade groups at different intervals are mounted on the outer sides of the two cutter rollers. The device is conveniently held through the handle for use, the length of the whole cutter is conveniently adjusted through the telescopic piece, use is convenient, the cutter roller with the blade sets is clamped and fixed between the two installation pieces, and then the two installation pieces are rotated to rotate the cutter roller so that different blade sets can be switched for coating cross-cut testing. And the cutter roller is positioned through the positioning piece, so that the device has the advantages that blades at different intervals can be conveniently and flexibly switched for cross-grid testing, frequent disassembly is not needed, the structure is more stable, and looseness is not likely to happen.

Description

Technical Field

[0001] The utility model relates to the technical field of grid knives, in particular to a novel grid knife for coating testing. Background Art

[0002] The grid cutter is a necessary adhesion tester for paint manufacturers and surface treatment manufacturers. The grid cutter uses a tool of certain specifications to cut and penetrate the coating into a grid pattern. The grid-cut pattern is classified into six levels to evaluate the resistance of the coating to separation from the substrate. However, the current grid cutter still has the following shortcomings:

[0003] 1. The tool intervals of the hundred-grid cutter in the prior art need to be replaced according to different test requirements, but frequent replacement of the hundred-grid cutter is likely to cause the tool fixing structure to loosen and the operation is cumbersome.

[0004] 2. The distance between the cutters of a group of cutters in the prior art is fixed, and the cutters cannot be flexibly switched according to the test requirements. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model aims to provide a new type of coating testing knife.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A novel coating test knife comprises a handle, a telescopic part is installed on the top of the handle, a knife holder is installed on the top of the telescopic part, two rotatable mounting parts are rotatably installed on the knife holder, a knife roller is detachably installed between the two mounting parts, four groups of blade groups with different intervals are installed outside the two knife rollers, a positioning part is installed on the top of the knife holder, and the positioning part cooperates with the two mounting parts;

[0008] The mounting member includes a rotating block, a fastening bolt and a clamping block, the outer side of the rotating block is rotatably mounted on the side of the tool holder, one end of the fastening bolt passes through and is threadedly connected to the interior of the rotating block, one side of the clamping block is fixedly connected to the rotating block, the end of the tool roller is clamped to the interior of the clamping block, one end of the fastening bolt located inside the rotating block extends and is threadedly connected to the interior of the clamping block, four positioning holes are opened on the outer side of the rotating block, and the positioning member cooperates with the positioning holes.

[0009] As a further description of the above technical solution: the positioning member includes an I-frame, two springs and a pull ring, both ends of the I-frame pass through and are slidably connected to the interior of the tool holder, the two springs are respectively sleeved on the outsides of the two vertical ends of the I-frame, one end of the two springs is fixedly connected to the tool holder, and the other ends of the two springs are fixedly connected to the outside of the I-frame, and the two ends of the I-frame are respectively plugged into and matched with the positioning holes on the two rotating blocks.

[0010] As a further description of the above technical solution: the telescopic part includes a connecting outer cylinder, an inner column and a rotating rod, the top of the connecting outer cylinder is fixedly connected to the tool holder, the bottom end of the inner column is fixedly connected to the handle, the top end of the inner column passes through and is threadedly connected to the interior of the connecting outer cylinder, the top end of the rotating rod is rotatably connected to the connecting outer cylinder, and the bottom end of the rotating rod passes through and is slidably connected to the interior of the inner column.

[0011] As a further description of the above technical solution: the four groups of blade sets with different intervals are distributed to the outside of the tool roller at equal distances and at intervals of 90 degrees.

[0012] As a further description of the above technical solution: a pointer corresponding to the position of the positioning hole is fixedly connected to the rotating block, and a positioning mark is etched on the right side of the tool holder.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] This solution uses a tool roller in conjunction with a mounting part, thereby achieving the advantage of the device being able to conveniently and flexibly switch blades of different spacings for hundred-grid testing without the need for frequent disassembly, making the structure more stable and less prone to loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0017] Figure 3 It is a schematic diagram of a partial front view three-dimensional split structure of the utility model;

[0018] Figure 4 It is a partial front view three-dimensional structural schematic diagram of the utility model.

[0019] Description of the numbers in the figure:

[0020] 1. Handle; 2. Telescopic part; 21. Connecting outer cylinder; 22. Inner column; 23. Rotating rod; 3. Tool holder; 31. Positioning mark; 4. Mounting part; 41. Rotating block; 411. Pointer; 42. Fastening bolt; 43. Engaging block; 44. Positioning hole; 5. Tool roller; 6. Blade assembly; 7. Positioning part; 71. I-beam; 72. Spring; 73. Pull ring. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention;

[0022] See also Figures 1 to 4 In the utility model, a new type of coating test grid knife includes a handle 1, a telescopic part 2 is installed on the top of the handle 1, a knife holder 3 is installed on the top of the telescopic part 2, two rotatable mounting parts 4 are rotatably installed on the knife holder 3, a tool roller 5 is detachably installed between the two mounting parts 4, four groups of blade groups 6 with different intervals are installed on the outer sides of the two tool rollers 5, a positioning part 7 is installed on the top of the knife holder 3, and the positioning part 7 cooperates with the two mounting parts 4.

[0023] In the utility model, the handle 1 is used to facilitate the use of the holding device, and the telescopic part 2 is used to facilitate the adjustment of the length of the entire tool, which is easy to use. The tool roller 5 with the blade group 6 is clamped and fixed between the two mounting parts 4, and then the tool roller 5 is rotated by rotating the two mounting parts 4 to switch different blade groups 6 for coating grid testing, and the position of the tool roller 5 is positioned by the positioning part 7 to keep the tool roller 5 stable, thereby realizing the device with the advantages of convenient and flexible switching of blades with different spacings for grid testing, and no frequent disassembly is required, making the structure more stable and not easy to loosen, solving the problem in the prior art that the tool interval needs to be replaced according to different test requirements, but frequent replacement of grid tools can easily cause the tool fixing structure to loosen, and the operation is cumbersome, and the spacing distance of the tools in a group of tools is fixed, and it is impossible to flexibly switch according to the test requirements.

[0024] See also Figure 1 and Figure 3 , wherein: the mounting member 4 includes a rotating block 41, a fastening bolt 42 and a clamping block 43, the outer side of the rotating block 41 is rotatably mounted on the side of the tool holder 3, one end of the fastening bolt 42 passes through and is threadedly connected to the inside of the rotating block 41, one side of the clamping block 43 is fixedly connected to the rotating block 41, the end of the tool roller 5 is clamped to the inside of the clamping block 43, one end of the fastening bolt 42 located inside the rotating block 41 extends and is threadedly connected to the inside of the clamping block 43, and four positioning holes 44 are opened on the outer side of the rotating block 41, and the positioning member 7 cooperates with the positioning hole 44.

[0025] In the utility model, the rotating block 41 is rotated on the tool holder 3, and the clamping block 43 is connected and fastened to the rotating block 41 by the fastening bolt 42, so that the tool roller 5 is fixedly installed, and at the same time, the tool roller 5 is conveniently rotated to switch the position of different blade groups 6 for operation and use.

[0026] See also Figure 1 and Figure 2 , wherein: the positioning member 7 includes an I-shaped frame 71, two springs 72 and a pull ring 73, both ends of the I-shaped frame 71 are penetrated and slidably connected to the inside of the tool holder 3, the two springs 72 are respectively sleeved on the outside of the two vertical ends of the I-shaped frame 71, one end of the two springs 72 is fixedly connected to the tool holder 3, and the other ends of the two springs 72 are fixedly connected to the outside of the I-shaped frame 71, and the two ends of the I-shaped frame 71 are respectively plugged into and matched with the positioning holes 44 on the two rotating blocks 41.

[0027] In the present invention, the I-shaped frame 71 is pulled by the pull ring 73 to slide the compression spring 72 along the tool holder 3, so that the I-shaped frame 71 is separated from the positioning hole 44 on the rotating block 41, which facilitates the rotation of the rotating block 41 and the adjustment of the tool roller 5.

[0028] See also Figure 2 The telescopic member 2 includes an outer cylinder 21, an inner column 22 and a rotating rod 23. The top of the outer cylinder 21 is fixedly connected to the tool holder 3, the bottom end of the inner column 22 is fixedly connected to the handle 1, the top end of the inner column 22 passes through and is threadedly connected to the inside of the outer cylinder 21, the top end of the rotating rod 23 is rotatably connected to the outer cylinder 21, and the bottom end of the rotating rod 23 passes through and is slidably connected to the inside of the inner column 22.

[0029] In the utility model, the outer cylinder 21 is rotated to rise along the inner column 22, so as to drive the rotating rod 23 to rise along the inner column 22, so as to adjust the length of the entire tool.

[0030] See also Figure 4 , wherein: four groups of blade groups 6 with different intervals are distributed on the outside of the tool roller 5 at equal distances and intervals of 90 degrees.

[0031] In the utility model, the cross-shaped distribution of the blade set 6 makes tool switching more convenient and accurate.

[0032] See also Figure 2 , wherein: a pointer 411 corresponding to the position of the positioning hole 44 is fixedly connected to the rotating block 41 , and a positioning mark 31 is etched on the right side of the tool holder 3 .

[0033] In the present invention, the positioning mark 31 cooperates with the pointer 411 so that the positioning hole 44 can be easily aligned with the I-shaped frame 71 when the rotating block 41 rotates, thereby facilitating the switching of the positioning.

[0034] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A novel coating testing knife, comprising a handle (1), characterized in that: A telescopic member (2) is installed on the top of the handle (1), a knife holder (3) is installed on the top of the telescopic member (2), two rotatable mounting members (4) are rotatably mounted on the knife holder (3), a knife roller (5) is detachably mounted between the two mounting members (4), four groups of blade groups (6) with different intervals are installed outside the two knife rollers (5), a positioning member (7) is installed on the top of the knife holder (3), and the positioning member (7) cooperates with the two mounting members (4); The mounting member (4) comprises a rotating block (41), a fastening bolt (42) and a snap-fit ​​block (43); the outer side of the rotating block (41) is rotatably mounted on the side of the tool holder (3); one end of the fastening bolt (42) passes through and is threadedly connected to the interior of the rotating block (41); one side of the snap-fit ​​block (43) is fixedly connected to the rotating block (41); the end of the tool roller (5) is snapped into the interior of the snap-fit ​​block (43); one end of the fastening bolt (42) located inside the rotating block (41) extends and is threadedly connected to the interior of the snap-fit ​​block (43); four positioning holes (44) are provided on the outer side of the rotating block (41); and the positioning member (7) cooperates with the positioning holes (44).

2. A new type of coating testing knife according to claim 1, characterized in that: The positioning member (7) comprises an I-shaped frame (71), two springs (72) and a pull ring (73); both ends of the I-shaped frame (71) penetrate through and are slidably connected to the interior of the tool holder (3); the two springs (72) are respectively sleeved on the outside of the two vertical ends of the I-shaped frame (71); one end of the two springs (72) is fixedly connected to the tool holder (3); the other ends of the two springs (72) are fixedly connected to the outside of the I-shaped frame (71); and the two ends of the I-shaped frame (71) are respectively plugged into and matched with the positioning holes (44) on the two rotating blocks (41).

3. The novel coating testing knife according to claim 1 is characterized by: The telescopic member (2) comprises a connecting outer cylinder (21), an inner column (22) and a rotating rod (23); the top of the connecting outer cylinder (21) is fixedly connected to the tool holder (3); the bottom end of the inner column (22) is fixedly connected to the handle (1); the top end of the inner column (22) passes through and is threadedly connected to the inside of the connecting outer cylinder (21); the top end of the rotating rod (23) is rotatably connected to the connecting outer cylinder (21); and the bottom end of the rotating rod (23) passes through and is slidably connected to the inside of the inner column (22).

4. The novel coating testing knife according to claim 1, characterized in that: The four groups of blade sets (6) with different intervals are sequentially distributed at equal distances and at intervals of ninety degrees to the outside of the tool roller (5).

5. The novel coating testing knife according to claim 2 is characterized by: A pointer (411) corresponding to the position of the positioning hole (44) is fixedly connected to the rotating block (41), and a positioning mark (31) is etched on the right side of the tool holder (3).

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