Aramid paper anti-wrinkle flatness measuring mechanism

Abstract

The utility model belongs to the technical field of detection tools, and relates to an aramid paper anti-wrinkle flatness measuring mechanism, which comprises a connecting frame, two fixed rollers and two counterweight rollers, a supporting part is arranged at the top of the connecting frame, the two fixed rollers are respectively and rotatably arranged at the edges of a pair of opposite sides at the upper part of the connecting frame, and the counterweight rollers are arranged on the supporting part. The highest points of the two fixed rollers are higher than the highest point of the supporting part, and the weights of the two counterweight rollers are equal. According to the detection mechanism, the two counterweight rollers can be fixed to the two ends of the aramid paper respectively, so that the two ends of the aramid paper are hung above the two fixed rollers in a suspended mode, the aramid paper is flattened under the action of equal gravity, and the aramid paper can be kept in a flattened state; and then measuring points at uniform intervals can be determined along one direction by using the positioning rule, so that an accurate flatness testing result is obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of detection tools, and particularly relates to a flatness measuring mechanism for preventing wrinkles of aramid paper. Background Art

[0002] Aramid paper is a high-performance material made of aramid fibers, and is usually used for sealing and insulation applications in high-temperature and high-pressure environments. Aramid paper has excellent heat resistance, chemical resistance and mechanical strength, so it is widely used in aerospace, automotive, electronics and other high-tech industries.

[0003] Aramid paper is a flexible film product, and has requirements for thickness uniformity during forming and needs to be measured. Theoretically speaking, as long as the aramid paper is placed on a precision flat workbench and fixed, the measuring part of a micrometer is installed so that it can contact the measuring surface. The target object is moved so that the measuring positions are evenly distributed, and the readings of the micrometer are read. The maximum value of the measured deviation is the flatness. However, there are problems in actual operation, because only when the back surface of the aramid paper is completely in close contact with the workbench, the thickness measurement of the upper surface is accurate. However, it is very difficult to achieve a completely flattened effect when the aramid paper is placed on the workbench, and its own stress will cause wrinkles, and the order of magnitude of the flatness is even smaller than that of the wrinkles, so it will cause a large error in the flatness test result. It is difficult to ensure the even distribution of the selected measuring points, and the moving method of the target object will change the measuring points, and different measuring values will be generated even at the same position, so the obtained measuring result is inaccurate.

[0004] Therefore, it is necessary to design a special detection mechanism to solve the above problems. Summary of the Invention

[0005] The main purpose of the utility model is to provide a flatness measuring mechanism for preventing wrinkles of aramid paper, which can fully flatten the aramid paper, so as to ensure the flatness of the lower surface and obtain accurate flatness data when measuring the upper surface.

[0006] The utility model realizes the above purpose through the following technical scheme: a flatness measuring mechanism for preventing wrinkles of aramid paper, including a connecting frame, two fixed rollers and two counterweight rollers. A supporting component is arranged at the top of the connecting frame. The two fixed rollers are respectively rotatably arranged at the edges of a pair of opposite sides of the upper part of the connecting frame, their axes are parallel and the highest points are at the same height. The highest points of the two fixed rollers are higher than the highest point of the supporting component, and the masses of the two counterweight rollers are equal.

[0007] Specifically, the connecting frame includes four supporting feet, and moving wheels are arranged at the lower ends of each supporting foot.

[0008] Specifically, two upper roller brackets are provided in the middle of the connecting frame. The two upper roller brackets are respectively located below a fixed roller. The middle of the cross-sectional structure of the upper roller bracket perpendicular to its length direction is lower than both sides, and the distance from the outermost end of the upper roller bracket to the nearest side wall is less than the distance from the outermost end of the fixed roller above it to the same side wall.

[0009] Furthermore, two lower roller brackets are provided at the lower part of the connecting frame. The two lower roller brackets are respectively located below an upper roller bracket. The middle of the cross-sectional structure of the lower roller bracket perpendicular to its length direction is lower than both sides, and the distance from the outermost end of the lower roller bracket to the nearest side wall is greater than the distance from the outermost end of the upper roller bracket to the nearest side wall.

[0010] Specifically, the supporting member is a pair of support rods arranged in parallel at the top of the connecting frame, and the length direction of the support rods is parallel to the axial direction of the fixed roller.

[0011] The beneficial effects of the technical solution of the present utility model are:

[0012] This detection mechanism can fix two counterweight rollers at both ends of the aramid paper respectively, so that both ends of the aramid paper are suspended above the two fixed rollers, thereby flattening the aramid paper under the action of equal gravity, so that the aramid paper can be kept in a flattened state. Then, the positioning ruler can be used to determine evenly spaced measurement points along one direction, so as to obtain an accurate flatness test result. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the front view of the aramid paper anti-wrinkle flatness measuring mechanism for the embodiment;

[0014] Figure 2 is the top view of the aramid paper anti-wrinkle flatness measuring mechanism;

[0015] Figure 3 is the flowchart of aramid paper fixing;

[0016] Figure 4 is the positioning principle diagram of the positioning ruler.

[0017] The numbers in the figure represent:

[0018] 1 - Aramid paper anti-wrinkle flatness measuring mechanism, 11 - Connecting frame, 111 - Supporting member, 112 - Support feet, 12 - Fixed roller, 13a, 13b - Counterweight rollers, 14 - Upper roller bracket, 15 - Lower roller bracket, 16 - Moving wheels;

[0019] 2 - Aramid paper, 20 - Aramid paper roll;

[0020] 3 - Positioning ruler, 31 - Positioning holes. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be further described in detail below in conjunction with specific embodiments.

[0022] Embodiment:

[0023] As Figures 1 to 3 shown, a flatness measuring mechanism 1 for aramid paper to prevent wrinkles of the present utility model includes a connecting frame 11, two fixed rollers 12, and two counterweight rollers 13a and 13b. A supporting member 111 is provided at the top of the connecting frame 11. The two fixed rollers 12 are respectively rotatably arranged at the edges of a pair of opposite sides of the upper part of the connecting frame 11. Their axes are parallel and the highest points are at the same height. The highest points of the two fixed rollers 12 are higher than the highest point of the supporting member 111. The masses of the two counterweight rollers 13a and 13b are equal.

[0024] During detection, a section of aramid paper 2 with a length longer than the maximum distance between the two fixed rollers 12 needs to be taken, and a counterweight roller needs to be fixed at each end of the aramid paper 2. The fixed rollers 12 form two fixed pulley structures. The weights of the two counterweight rollers 13a and 13b are equal. Therefore, when the aramid paper 2 is placed on the above fixed pulley structures, the gravity forces at both ends are balanced, so it can be in a static state. The two counterweight rollers 13a and 13b provide the pulling force to flatten the aramid paper 2. When the aramid paper 2 is in full contact with the two fixed rollers 12, the aramid paper 2 is presented in the horizontal plane determined by the generatrix where the highest positions of the two fixed rollers 12 are located. Therefore

[0025] As Figure 1 shown, the connecting frame 11 includes four support feet 112, and a moving wheel 16 is provided at the lower end of each support foot 112.

[0026] The moving wheels 16 enable the entire flatness measuring mechanism 1 for aramid paper to move on the ground, so it can actively approach the storage position of the aramid paper roll 20 and complete the flatness detection, reducing the workload of handling.

[0027] As Figures 1 to 3 shown, two upper roller brackets 14 are provided in the middle of the connecting frame 11. The two upper roller brackets 14 are respectively located below a fixed roller 12. The middle part of the cross-sectional structure of the upper roller bracket 14 along the vertical direction of its length is lower than both sides, and the distance from the outermost end of the upper roller bracket 14 to the nearest side wall is less than the distance from the outermost end of the fixed roller 12 above it to the same side wall.

[0028] The upper roller support 14 provides a position for temporarily placing the counterweight roller 13. Since the upper roller support 14 has a structure that is lower in the middle and higher on both sides, the counterweight roller 13 will not roll when placed on the upper roller support 14. The height of the upper roller support 14 is in the middle, so it is also in a position that is relatively easy for the staff to reach, facilitating access. However, when the counterweight roller 13 is suspended, the tensioned aramid paper 2 should preferably not touch the upper roller support 14, because in this way, the tension on each side of the aramid paper 2 is equal to the gravity of the counterweight roller 13, which can ensure that after the aramid paper 2 is flattened, its position will not change due to disturbance.

[0029] As Figures 1 to 3 shown, two lower roller supports 15 are provided at the lower part of the connecting frame 11. The two lower roller supports 15 are respectively located below an upper roller support 14. The cross-sectional structure of the lower roller support 15 in the middle along the direction perpendicular to its length is lower than that on both sides, and the distance from the outermost end of the lower roller support 15 to the nearest side wall is greater than the distance from the outermost end of the upper roller support 14 to the nearest side wall.

[0030] The lower roller support 15 is located between the upper roller support 14 and the ground. If the counterweight roller 13 falls because it is not closely attached, the lower roller support 15 will play a role in supporting and buffering, preventing the counterweight roller 13 from injuring people or being damaged.

[0031] As Figures 1 to 3 shown, the supporting member 111 is a pair of parallel support rods arranged at the top of the connecting frame 11. The length direction of the support rods is parallel to the axial direction of the fixed roller 12.

[0032] The aramid material roll 20 can be placed between the two support rods to play a temporary fixing role. At this time, the pulling direction of the aramid paper 2 can always pass above a fixed roller 12, and the end of the aramid paper 2 can be adhered to the counterweight roller 13b with double-sided tape.

[0033] As Figure 3 and Figure 3As shown in the figure, the usage process of the aramid paper anti-wrinkle flatness measurement mechanism 1 is as follows: The aramid material roll 20 is placed above the two supporting components 111, and its end is pulled out a sufficient length above the right fixed roller 12, and then the counterweight roller 13b is adhered to the pulled-out end of the aramid material roll 20 with double-sided tape; Subsequently, continue to pull out the end of the aramid material roll 20 so that the counterweight roller 13b hangs down onto the lower roller bracket 15 on the right and is then supported. Subsequently, the aramid material roll 20 is cut to obtain the aramid paper 2, completing the sampling; One side of the cut end of the aramid paper 2 is fixed to the counterweight roller 13a with double-sided tape. After completion, let the counterweight roller 13a hang down naturally and its height is between the upper roller bracket 14 on the left and the lower roller bracket 15, and the counterweight roller 13b rises to between the upper roller bracket 14 and the lower roller bracket 15 on the right. At this time, neither end of the aramid paper 2 will touch the upper roller bracket 14, and both ends are balanced by equal gravity, and the aramid paper 2 is in a taut state. Appropriately adjust the relative position of the aramid paper 2 and the two fixed rollers 12 so that the middle part of the aramid paper 2 remains flat. Then, the positioning ruler 3 can be placed above the middle part of the aramid paper 2. A plurality of positioning holes 31 are arranged at intervals along a straight line direction on the positioning ruler 3. Therefore, by using the positioning ruler 3, evenly spaced measurement points can be traced on the upper surface of the aramid paper 2 in one direction. A dial indicator is set above the middle part of the aramid paper 2 so that its probe contacts each measurement point to obtain the measurement value. The difference between the two measurement values with the largest deviation is the flatness of the aramid paper 2 sample. Because the aramid paper 2 is in a very flat state, the obtained flatness test result is accurate.

[0034] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the creative concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An aramid paper anti-crease flatness measurement mechanism, characterized in that: It includes a connecting frame, two fixed rollers and two counterweight rollers. A supporting member is provided at the top of the connecting frame. The two fixed rollers are respectively rotatably arranged at the edges of a pair of opposite sides of the upper part of the connecting frame, their axes are parallel and the highest points are at the same height. The highest points of the two fixed rollers are higher than the highest point of the supporting member, and the two counterweight rollers have equal masses.

2. The aramid paper anti-wrinkle flatness measurement mechanism according to claim 1, wherein: The connecting frame includes four supporting feet, and moving wheels are provided at the lower ends of each supporting feet.

3. The aramid paper anti-wrinkle flatness measurement mechanism according to claim 1, characterized in that: Two upper roller brackets are provided in the middle of the connecting frame, and the two upper roller brackets are respectively located below a fixed roller. The cross-sectional structure in the middle of the upper roller bracket is lower than that of the two sides along the direction perpendicular to its length, and the distance from the outermost end of the upper roller bracket to the nearest side wall is less than the distance from the outermost end of the fixed roller above it to the same side wall.

4. The aramid paper anti-wrinkle flatness measurement mechanism according to claim 3, characterized in that: Two lower roller brackets are provided at the lower part of the connecting frame, and the two lower roller brackets are respectively located below an upper roller bracket. The cross-sectional structure in the middle of the lower roller bracket is lower than that of the two sides along the direction perpendicular to its length, and the distance from the outermost end of the lower roller bracket to the nearest side wall is greater than the distance from the outermost end of the upper roller bracket to the nearest side wall.

5. The aramid paper anti-wrinkle flatness measurement mechanism according to claim 1, wherein: The supporting member is a pair of supporting rods arranged in parallel at the top of the connecting frame, and the length direction of the supporting rod is parallel to the axial direction of the fixed roller.

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