Vertical coating bending resistance testing device

Abstract

The utility model provides a vertical coating anti-bending testing device which comprises a base and a top cover, and the base and the top cover are connected with each other through a first upright post and a second upright post; comprising a drop hammer, the drop hammer is arranged between a first stand column and a second stand column, a first sliding groove and a second sliding groove are formed in the two sides of the drop hammer respectively, the first stand column is embedded in the first sliding groove in a sliding connection mode, and the second stand column is embedded in the second sliding groove in a sliding connection mode; a knob is arranged at the top of the top cover and is rotationally connected with the top cover through a rotating shaft; a circular cavity is formed in the bottom of the top cover, a rotating rod is arranged in the circular cavity, the bottom end of the rotating shaft is fixedly connected with the center of the rotating rod, and the rotating rod is in magnetic attraction connection with the top face of the drop hammer through a magnet. According to the utility model, the technical problems in the prior art that bending by pressing is greatly influenced by human factors, external indexes cannot be unified, and test results cannot be quantified better are solved.

Description

Technical Field

[0001] This utility model relates to the field of physics, and more particularly to coating testing technology, specifically a vertical coating bending resistance testing device. Background Technology

[0002] Whether the paint coating on the surface of thin metal sheet parts cracks and peels after bending is an important indicator of coating quality. In existing technology, a manual bending machine (also known as a sheet metal bending machine) is generally used. The thin metal sheet parts are folded by manually pressing the handle, and the coating condition after folding is observed to judge the coating quality.

[0003] However, this type of device also has the following drawbacks:

[0004] 1. The manual bending machine is operated by the tester manually pressing down the handle. The speed at which the handle is pressed down, the force applied, and the improper hand posture will all affect the test results, resulting in a large deviation in the final measurement results.

[0005] 2. The bending seat of a manual bending machine is usually horizontal, which cannot truly simulate the tilt angle between the sheet metal part and the mold during the actual processing of some sheet metal parts. Utility Model Content

[0006] The purpose of this utility model is to provide a vertical coating bending resistance testing device, which aims to solve the technical problems in the prior art where bending by pressing is greatly affected by human factors, external indicators cannot be standardized, and test results cannot be better quantified.

[0007] A vertical coating bending resistance testing device includes a base and a top cover, which are connected to each other by a first column and a second column. The first column and the second column are parallel to each other and are perpendicular to the top surface of the base and the bottom surface of the top cover. The device includes a drop hammer, the vertical projection of which is rectangular, including a long side and a short side. A first groove and a second groove are respectively formed on the two long sides of the drop hammer. The first column is embedded in the first groove and slidably connected to it. The second column is embedded in... The second slide groove is slidably connected to the second slide groove; a knob is provided on the top of the top cover, and the knob is rotatably connected to the top cover through a rotating shaft; a circular cavity is opened at the bottom of the top cover, and a rotating rod is provided in the circular cavity; the bottom end of the rotating shaft is fixedly connected to the center of the rotating rod, and the rotating shaft is coaxial with the center of the circular cavity; a magnet is provided at each end of the bottom of the rotating rod, and the rotating rod is magnetically connected to the top surface of the drop hammer through the magnet; the length of the rotating rod is greater than the short side of the drop hammer and less than the long side of the drop hammer.

[0008] Furthermore, a ramp pad is provided on the base, the top surface of the ramp pad is a ramp, and the ramp pad is located between the first column and the second column.

[0009] Furthermore, the first column and the second column are located on the left and right sides of the base, respectively, and the front and rear sides of the base are respectively provided with backing plates, and the ramp pad is located between the front and rear backing plates.

[0010] Furthermore, the bottom of the backrest is inserted into the base.

[0011] Furthermore, gaps are provided between the first column and the inner wall of the first chute, and between the second column and the inner wall of the second chute.

[0012] Furthermore, the angle between the inclined surface of the slope pad and the horizontal plane is 3-5°.

[0013] Compared with existing technologies, the advantages of this invention are positive and obvious:

[0014] 1. The top cover of this utility model is equipped with a rotating rod, and magnets are provided at both ends of the rotating rod. The magnets are magnetically connected to the top of the drop hammer. When the rotating rod rotates, the two ends of the rotating rod leave the top of the drop hammer, the magnets are misaligned with the drop hammer, the magnetic connection is broken, and the drop hammer falls freely to impact the sample, thereby reducing the error caused by manual bending and improving the standardization of the test.

[0015] 2. The base of this utility model is provided with a ramp pad, which is located between the first column and the second column, to realistically simulate the tilt angle between the sheet metal parts and the mold during the actual processing of some sheet metal parts. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of Embodiment 1 of this utility model.

[0017] Figure 2 A front view of the structure of Embodiment 1 of this utility model.

[0018] Figure 3 A cross-sectional view of the vertically oriented rotating rod in Embodiment 1 of this utility model.

[0019] Figure 4 A cross-sectional view of the rotating rod when it is horizontally arranged in Embodiment 1 of this utility model.

[0020] Figure 5 A top view of the falling hammer in Embodiment 1 of this utility model.

[0021] Figure 6 A schematic diagram of the structure of Embodiment 2 of this utility model.

[0022] In the diagram: 1. Base; 2. First column; 3. Second column; 4. Top cover; 401. Circular cavity; 5. Drop hammer; 501. First slide groove; 502. Second slide groove; 6. Knob; 7. Rotating shaft; 8. Rotating rod; 9. Magnet; 10. Slope pad; 11. Backing plate. Detailed Implementation

[0023] The following embodiments will further illustrate the present invention, but are not intended to limit the present invention.

[0024] like Figures 1 to 5 As shown, this embodiment provides a vertical coating bending resistance testing device, including a base 1 and a top cover 4. The base 1 and the top cover 4 are connected to each other by a first column 2 and a second column 3. The first column 2 and the second column 3 are parallel to each other, and both the first column 2 and the second column 3 are perpendicular to the top surface of the base 1 and the bottom surface of the top cover 4.

[0025] The device includes a drop hammer 5, which is a horizontally placed rectangular metal block. The vertical projection of the drop hammer 5 is rectangular, including two opposite long sides and two opposite short sides. The drop hammer 5 is installed between a first column 2 and a second column 3. A first sliding groove 501 and a second sliding groove 502 are respectively opened on both sides of the drop hammer 5. The first sliding groove 501 matches the side shape of the first column 2, and the second sliding groove 502 matches the side shape of the second column 3. The first column 2 is slidably connected in the first sliding groove 501, and the second column 3 is slidably connected in the second sliding groove 502, so that the drop hammer 5 can slide up and down along the first column 2 and the second column 3. Gaps are left between the first column 2 and the inner wall of the first sliding groove 501, and between the second column 3 and the inner wall of the second sliding groove 502, so as to reduce the contact area between the columns and the drop hammer 5 and reduce interference with the falling speed of the drop hammer 5.

[0026] A knob 6 is installed on the top of the top cover 4, and the knob 6 is rotatably connected to the top cover 4 via a rotating shaft 7.

[0027] A circular cavity 401 is formed at the bottom of the top cover 4, and the bottom of the circular cavity 401 is connected to the bottom of the top cover 4. A rotating rod 8 is arranged inside the circular cavity 401. The bottom end of the rotating shaft 7 is fixed to the center of the rotating rod 8, and the rotating shaft 7 is coaxial with the center of the circular cavity 401. A magnet 9 is respectively arranged at both ends of the bottom of the rotating rod 8, and the rotating rod 8 is magnetically connected to the top surface of the drop hammer 5 through the magnet 9. The length of the rotating rod 8 is greater than the short side of the drop hammer 5 and less than the long side of the drop hammer 5. When the vertical projection of the magnets 9 at both ends of the rotating rod 8 is within the vertical projection of the drop hammer 5, the rotating rod 8 and the drop hammer 5 are magnetically connected through the magnets 9; when the vertical projection of the magnets 9 at both ends of the rotating rod 8 is outside the vertical projection of the drop hammer 5, the two ends of the rotating rod 8 extend beyond the edge of the long side of the drop hammer 5, thereby separating the magnets 9 from the drop hammer 5, breaking the magnetic connection, and causing the drop hammer 5 to fall.

[0028] How to use this embodiment:

[0029] Before testing, prepare a pre-bent metal sheet sample. Before pre-bending, the sample is a long strip of metal. During pre-bending, gently bend the metal sheet in half, bringing the two ends of the metal sheet close together, with the bend forming an arc shape for testing. Rotate knob 6 so that the vertical projection of the magnets 9 at both ends of the rotating rod 8 is within the vertical projection of the drop hammer 5. Manually lift the drop hammer 5 to magnetically connect it to the rotating rod 8. Then place the sample to be tested between the first column 2 and the second column 3 of the base 1.

[0030] During the test, the knob 6 is rotated so that the vertical projection of the magnets 9 at both ends of the rotating rod 8 moves outside the vertical projection of the drop hammer 5, thereby causing the magnets 9 at both ends of the rotating rod 8 to be misaligned with the drop hammer 5. The drop hammer 5 falls freely and impacts the sample. The bent part of the sample is impacted by the free fall of the drop hammer and becomes tightly folded.

[0031] Finally, lift the drop hammer 5 to observe the coating condition at the bending point of the sample and judge the coating quality.

[0032] Example 2

[0033] like Figure 6 As shown, this embodiment is a preferred solution of Embodiment 1. A ramp pad 10 is placed on the base 1. The top surface of the ramp pad 10 is a ramp, and the angle between the ramp and the horizontal plane is 3-5°. This angle is a commonly used measurement parameter in actual testing.

[0034] The first column 2 and the second column 3 are located on the left and right sides of the base 1, respectively. The front and rear sides of the base 1 are respectively provided with backing plates 11. The base is provided with slots. The bottom of the backing plate 11 is inserted into the base 1 through the slots. The ramp pad 10 is located between the front and rear backing plates 11, the first column 2, and the second column 3. The sample is placed on the ramp pad 10, so that the ramp pad 10 can realistically simulate the tilt angle between the sheet metal part and the mold during the actual processing of some sheet metal parts. At the same time, the backing plate 11 can prevent the sample from being significantly displaced after being impacted.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vertical coating anti-bending test device, characterized in that: it comprises a base (1) and a top cover (4), the base (1) and the top cover (4) are connected to each other by a first column (2) and a second column (3), the first column (2) and the second column (3) are parallel to each other, and the first column (2) and the second column (3) are perpendicular to the top surface of the base (1) and the bottom surface of the top cover (4); it comprises a drop hammer (5), the vertical projection of the drop hammer (5) is a rectangle, including a long side and a short side; a first sliding groove (501) and a second sliding groove (502) are respectively formed on the two long sides of the drop hammer (5), the first column (2) is embedded in the first sliding groove (501) and is in sliding connection with the first sliding groove (501), and the second column (3) is embedded in the second sliding groove (502) and is in sliding connection with the second sliding groove (502); a knob (6) is arranged on the top of the top cover (4), and the knob (6) is in rotational connection with the top cover (4) through a rotating shaft (7); a circular cavity (401) is formed in the bottom of the top cover (4), a rotating rod (8) is arranged in the circular cavity (401), the bottom end of the rotating shaft (7) is fixedly connected with the center of the rotating rod (8), the rotating shaft (7) is coaxial with the center of the circular cavity (401), and two magnets (9) are arranged at the two ends of the bottom of the rotating rod (8); the rotating rod (8) is in magnetic attraction connection with the top surface of the drop hammer (5) through the magnets (9); the length of the rotating rod (8) is greater than the short side of the drop hammer (5) and less than the long side of the drop hammer (5).

2. The vertical coating anti-bending test device according to claim 1, characterized in that: an inclined pad (10) is arranged on the base (1), the top surface of the inclined pad (10) is an inclined surface, and the inclined pad (10) is located between the first column (2) and the second column (3).

3. The vertical coating anti-bending test device according to claim 2, characterized in that: the first column (2) and the second column (3) are respectively located on the left side and the right side of the base (1), front and rear backrests (11) are respectively arranged on the front side and the rear side of the base (1), and the inclined pad (10) is located between the front and rear backrests (11).

4. The vertical coating anti-bending test device according to claim 3, characterized in that: the bottom of the backrest (11) is inserted into the base (1).

5. The vertical coating anti-bending test device according to claim 1, characterized in that: gaps are arranged between the inner walls of the first sliding groove (501) and the second sliding groove (502) and the first column (2) and the second column (3).

6. The vertical coating anti-bending test device according to claim 2, characterized in that: the included angle between the inclined surface of the inclined pad (10) and the horizontal plane is 3-5°. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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