Paper tube coaxial rotation characteristic tester
By designing a paper tube coaxial rotation characteristic measuring instrument, using adjustable rubber support rollers and movement sensors, the problem of large measurement errors in the prior art is solved, and more scientific and efficient measurement of roundness and positiveness of paper tubes is achieved, and operation is simplified. And reduce costs.
Patent Information
- Application Number
- CN202323544106.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-25
AI Technical Summary
The prior art has problems such as large artificial influence, large measurement errors, and inability to accurately locate when measuring the coaxial rotation characteristics of paper tubes, and lacks scientific and efficient detection instruments.
A paper tube coaxial rotation characteristic measuring instrument is designed, using rubber support rollers with adjustable spacing and moving sensors, combining roundness and positiveness measurement sensors, and achieving stable positioning and efficient measurement through mechanical connections and sliding grooves, supporting different diameters and Test paper tubes of length.
It effectively reduces test errors, simplifies operations, improves measurement efficiency, meets different test needs, and saves test costs.
Smart Images
Figure CN222166079U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of packaging testing, and in particular relates to a paper tube coaxial rotation characteristic tester. Background Art
[0002] Paper tube packaging is widely used in the fields of metallurgy, film industry, medical equipment, food, paper printing, etc. The shape error of paper tube packaging is an important technical reference. The shape error includes roundness and straightness characteristics. Roundness and straightness are collectively referred to as coaxial rotation characteristics in the industry.
[0003] At present, the measurement methods of roundness in the coaxial rotation characteristics of paper tubes include the rotary axis method, three-point method, two-point method, projection method, coordinate method, etc. The commonly used detection method in paper tube detection is the three-point method: during measurement, the test sample is fixed in a V-shaped block, the sample is manually rotated, and the plane perpendicular to the sample axis is measured 360° through a micrometer (micrometer and other measuring instruments) (the three points are the two points where the V-shaped block is tangent to the sample and the point where the micrometer contacts the sample), and the maximum and minimum indications are read out. The difference between the two indications is the roundness deviation of the test sample.
[0004] The measurement method of positiveness is the five-point method: when measuring, fix the test sample in two V-blocks, rotate the sample manually, and use a micrometer (micrometer or other measuring instruments) to measure 360° the plane between the two V-blocks that is perpendicular to the axis of the sample (the five points are the four points where the two V-blocks are tangent to the sample and one point where the micrometer contacts the sample). Record the maximum and minimum indications displayed by the micrometer for each plane rotated 360°, calculate the difference between the maximum and minimum indications, and half of the maximum difference is the positiveness deviation of the test sample.
[0005] Although the three-point method and the five-point method are widely used, there are still many problems that cannot be ignored, such as many human factors, large measurement errors, the inability to accurately locate the five-point method measurement surface, etc., and the lack of more scientific and efficient testing instruments. Utility Model Content
[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a paper tube coaxial rotation characteristic measuring instrument, which can more scientifically and efficiently measure the roundness and straightness of the paper tube, speed up the test speed, reduce the test error, and save the test cost.
[0007] The utility model solves the technical problem through the following technical solutions:
[0008] A paper tube coaxial rotation characteristics tester, characterized in that it includes a base, a fixed support roller frame and a movable support roller frame are respectively arranged on both sides of the base, a pair of support rollers are arranged on the fixed support roller frame and the movable support roller frame, a bracket is arranged between the fixed support roller frame and the movable support roller frame, a sample is supported and placed on the pair of support rollers on the fixed support roller frame and the movable support roller frame, a fixed bracket is fixedly installed on the bracket and the fixed support roller frame, a roundness measuring sensor is fixedly installed on the fixed bracket, the movable bracket is slidably installed on the bracket, and a straightness measuring sensor is fixedly installed on the movable bracket.
[0009] Moreover, a sliding groove parallel to the axial direction of the sample is opened on the base, and the movable supporting roller frame is slidably embedded in the sliding groove.
[0010] Moreover, the distance between the two supporting rollers of the pair of supporting rollers is adjustable, and the supporting rollers are rubber supporting rollers.
[0011] Furthermore, the roundness measurement sensor and the straightness measurement sensor can be configured with probes of different weights.
[0012] Furthermore, the roundness measuring sensor can move along the radial direction of the sample, and the straightness measuring sensor can move along the radial direction of the sample.
[0013] The advantages and beneficial effects of the utility model are:
[0014] 1. In the paper tube coaxial rotation characteristic tester of the utility model, the supporting point of the paper tube is replaced by two pairs of rubber support rollers with adjustable spacing from the V-block, which can effectively avoid frequent replacement of the V-block during detection and simplify the test operation; the paper tube rotates on the support rollers, making the paper tube more stable and reducing the error caused by the wear of the V-blocks; and the spacing between the support rollers is adjustable, so paper tubes of different diameters can be detected.
[0015] 2. The paper tube coaxial rotation characteristic tester of the utility model measures the roundness of the paper tube by means of a roundness measuring sensor fixed on a fixed bracket. The roundness measuring sensor is fixed on the fixed bracket by mechanical connection and is firmly fixed to ensure that the detection surface is always the section where the roundness measuring sensor is located. While reducing the test error, measuring sensors of different ranges and accuracies can also be replaced to meet different test requirements.
[0016] 3. The paper tube coaxial rotation characteristic tester of the utility model measures the straightness of the paper tube through the straightness measuring sensor. The straightness measuring sensor is fixed on the mobile bracket through mechanical connection, which is firmly fixed to ensure that the detection surface is always the section where the straightness measuring sensor is located, thereby reducing the test error. The measuring sensors of different ranges and accuracies can also be replaced; at the same time, the mobile bracket can move on the bracket along the axial direction of the sample, which is more convenient to select the detection surface perpendicular to the axial direction.
[0017] 4. The paper tube coaxial rotation characteristic tester of the utility model has a sliding groove parallel to the axial direction of the sample in the base, and the bottom of the movable support roller frame is embedded in the sliding groove and moves along the sliding groove. For the five-point method of measuring the positiveness, the movable support roller frame can be moved to meet the detection requirements of samples of different lengths, and it is easier to confirm the four points that need to be determined in advance.
[0018] 5. The paper tube coaxial rotation characteristic tester of the utility model, the roundness measurement sensor and the straightness measurement sensor are equipped with probes with different weights. The test pressure of the sample is formed by the dead weight of the probe. The test pressure of the sample can be changed by replacing the probe, which can meet various test requirements.
[0019] 6. The paper tube coaxial rotation characteristic tester of the present invention can measure the roundness and straightness of the paper tube more scientifically and efficiently, improve the test efficiency, reduce the test error and save the test cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is the front view of the utility model;
[0021] Figure 2 for Figure 1 Left view of
[0022] Figure 3 It is a schematic diagram of the structure of the utility model;
[0023] Figure 4 This is a schematic diagram of the connection between the measuring sensor and the sample of the utility model.
[0024] Description of Reference Numerals
[0025] 1-sample, 2-support roller, 3-roundness measuring sensor, 4-positiveness measuring sensor, 5-bracket, 6-fixed support roller frame, 7-movable support roller frame, 8-base, 9-sliding groove, 10-fixed bracket, 11-movable bracket. DETAILED DESCRIPTION
[0026] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not restrictive, and the protection scope of the present invention cannot be limited by them.
[0027] A paper tube coaxial rotation characteristic tester, the innovation of which lies in: comprising a base 8, a fixed support roller frame 6 and a movable support roller frame 7 are respectively arranged on both sides of the base 8, a pair of support rollers 2 are arranged on the fixed support roller frame 6 and the movable support roller frame 7, a bracket 5 is arranged between the fixed support roller frame 6 and the movable support roller frame 7, a sample 1 is supported and placed on the pair of support rollers 2 on the fixed support roller frame 6 and the movable support roller frame 7, a fixed bracket 10 is fixedly installed on the bracket 5 and the fixed support roller frame 6, a roundness measuring sensor 3 is fixedly installed on the fixed bracket 10, the movable bracket 11 is slidably installed on the bracket 5, and a straightness measuring sensor 4 is fixedly installed on the movable bracket 11.
[0028] 1. Sample: Provided by the inspected party and cut to appropriate length according to specific circumstances.
[0029] 2. Support roller: It is composed of two cylindrical rubber parts that can move and rotate independently. The distance between the two cylindrical bearings can be adjusted according to the diameter of the sample. It plays a fixed supporting role for the sample and reduces the rotational resistance of the sample during the test.
[0030] 3. Roundness measurement sensor and fixed bracket 10: The roundness measurement sensor 3 is fixed on the fixed bracket 10 through a mechanical connection, and can move along the radial direction of the sample perpendicular to the base, and is used to measure the roundness of the test section of the sample.
[0031] 4. Alignment measurement sensor and mobile bracket 11: The alignment measurement sensor 4 is fixed on the mobile bracket 11 through mechanical connection, and can move along the radial direction of the sample perpendicular to the base. The mobile bracket 11 can move along the axial direction of the sample to measure the alignment of the test section of the sample.
[0032] 5. Bracket: used to support samples, support rollers, fixed brackets and movable brackets.
[0033] 6. Fixed support roller frame: used to support support rollers, roundness measurement sensors and fixed frames.
[0034] 7. Movable support roller frame: used to support the support roller. The bottom of the movable support roller frame is embedded in the sliding groove of the base and can move along the sliding groove.
[0035] 8. Base: It serves as a fixed support for the entire instrument. A sliding groove 9 parallel to the axial direction of the sample is opened in the middle of the base, so that the movable support roller frame can move along the axial direction of the sample.
[0036] The supporting points of the paper tube of the utility model are replaced by two pairs of rubber supporting rollers with adjustable spacing from the V-shaped blocks, which can effectively avoid frequent replacement of the V-shaped blocks during detection and simplify the test operation; the paper tube rotates on the supporting rollers, making the paper tube more stable and reducing the error caused by the wear of the V-shaped blocks; and the spacing between the supporting rollers is adjustable, so paper tubes of different diameters can be detected.
[0037] The utility model measures the roundness of a paper tube by means of a roundness measuring sensor fixed on a fixed bracket. The roundness measuring sensor is fixed on the fixed bracket through a mechanical connection and is firmly fixed, thereby ensuring that the detection surface is always the section where the roundness measuring sensor is located. While reducing the test error, measuring sensors of different ranges and accuracies can be replaced to meet different test requirements.
[0038] The utility model measures the straightness of the paper tube through a straightness measuring sensor. The straightness measuring sensor is fixed on the movable bracket through mechanical connection, and is firmly fixed to ensure that the detection surface is always the section where the straightness measuring sensor is located, thereby reducing the test error and replacing measuring sensors of different ranges and accuracies. At the same time, the movable bracket can move on the bracket along the axial direction of the sample, which makes it more convenient to select the detection surface perpendicular to the axial direction.
[0039] The utility model has a sliding groove parallel to the axial direction of the sample in the base, the bottom of the movable support roller frame is embedded in the sliding groove and moves along the sliding groove, and for the five-point method of measuring the positiveness, the movable support roller frame can be moved to meet the detection requirements of samples of different lengths, and it is easier to confirm the four points that need to be predetermined.
[0040] The utility model roundness measuring sensor and straightness measuring sensor are both equipped with probes with different weights. The deadweight of the probe forms a test pressure on the sample. The test pressure of the sample can be changed by replacing the probe, which can meet various test requirements.
[0041] The working principle of the utility model is:
[0042] Roundness (three-point method): The measurement is carried out between three points on a plane perpendicular to the axis of the sample. These three points confirm a section perpendicular to the axis of the sample. Two of the points have been predetermined, namely the points where the two support rollers on the fixed bracket contact the sample, and the other test point moves along the measurement direction (one circle of the section).
[0043] Roundness deviation: Place the sample on the support roller that fixes the sensor and its bracket. Adjust the sensor bracket so that it is located in the middle of the two support rollers and in contact with the sample. Rotate the sample one circle and read the maximum and minimum values on the measuring sensor. The difference between the two readings is the roundness deviation (fR) in mm.
[0044] Correctness (five-point method): The measurement is carried out between five points on the plane perpendicular to the axis of the sample, four of which have been predetermined, namely the four determined points where the two pairs of support rollers on the fixed bracket and the movable bracket are in contact with the sample. Each pair of support rollers confirms a section perpendicular to the axis of the sample and the other test point is selected in the area between the two sections. The test point moves along the measurement direction (one circle of the section).
[0045] Positive deviation: Place the sample on two pairs of support rollers, adjust the movable sensor bracket so that the movable sensor is located between the two pairs of support rollers and between the two support rollers and in contact with the sample, rotate the sample one circle, read the maximum and minimum values on the measuring sensor, record the difference between the two readings, repeat the test, and the positive deviation (fS) is half of the maximum difference.
[0046] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.
Claims
1. A paper tube coaxial rotation characteristic tester, characterized in that: The invention comprises a base (8), wherein a fixed support roller frame (6) and a movable support roller frame (7) are respectively arranged on both sides of the base (8), wherein a pair of support rollers (2) are arranged on the fixed support roller frame (6) and the movable support roller frame (7), wherein a bracket (5) is arranged between the fixed support roller frame (6) and the movable support roller frame (7), wherein a sample (1) is supported and placed on the pair of support rollers (2) on the fixed support roller frame (6) and the movable support roller frame (7), wherein a fixed bracket (10) is fixedly mounted on the bracket (5) and the fixed support roller frame (6), wherein a roundness measuring sensor (3) is fixedly mounted on the fixed bracket (10), wherein a movable bracket (11) is slidably mounted on the bracket (5), and wherein a straightness measuring sensor (4) is fixedly mounted on the movable bracket (11).
2. The paper tube coaxial rotation characteristic tester according to claim 1, characterized in that: The base (8) is provided with a sliding groove (9) parallel to the axial direction of the sample (1), and the movable support roller frame (7) is slidably embedded in the sliding groove (9).
3. The paper tube coaxial rotation characteristic tester according to claim 1, characterized in that: The distance between the two support rollers of the pair of support rollers (2) is adjustable, and the support rollers are rubber support rollers.
4. The paper tube coaxial rotation characteristic tester according to claim 1, characterized in that: The roundness measurement sensor (3) and the straightness measurement sensor (4) can both be configured with probes having different weights.
5. The paper tube coaxial rotation characteristic tester according to claim 1, characterized in that: The roundness measurement sensor (3) can move radially along the sample (1), and the straightness measurement sensor (4) can move radially along the sample (1).