CN217359340U - Sample clamp for Martindale wear-resistant tester - Google Patents
Sample clamp for Martindale wear-resistant tester Download PDFInfo
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- CN217359340U CN217359340U CN202221238771.0U CN202221238771U CN217359340U CN 217359340 U CN217359340 U CN 217359340U CN 202221238771 U CN202221238771 U CN 202221238771U CN 217359340 U CN217359340 U CN 217359340U
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Abstract
The utility model discloses a sample anchor clamps for martindale abrasion tester, including abaculus (1) and gland nut (2), its characterized in that: the upper part of the compression nut (2) is provided with internal threads; the insert (1) is arranged below the internal thread of the compression nut (2); a connecting shaft (1a) is arranged in the middle of the top surface of the embedded block (1), and a blind hole for inserting the pin shaft (3) is formed in the upper part of the connecting shaft (1 a); the lower part of the connecting shaft (1a) is tightly sleeved with a compaction plug (5) through a bearing (4), and the external thread of the compaction plug (5) is matched with the internal thread of the compaction nut (2). The wear-resistant test of the fabric is carried out by using the sample clamp, the test operation is more convenient, the test efficiency is high, the test cost is low, the test result is accurate, and the error is small.
Description
Technical Field
The utility model relates to a part of martindale abrasion tester especially relates to the sample anchor clamps of martindale abrasion tester.
Background
During the wearing process of the garment, friction is generated between the garment and between the garment and a foreign object, which can cause different degrees of abrasion and even damage to the fabric (textile) of the garment. The wear resistance of the fabric is the ability of the fabric to resist frictional wear, and the wear resistance of the fabric directly determines the application and the type of the garment, and also determines the serviceability and the service life of the garment. Therefore, the detection of the wear resistance of the fabric or the clothing has very important significance for the selection and design of the fabric (fabric) of the clothing, the acceptance and guarantee of the clothing quality and the transaction pricing of the clothing and the fabric.
At present, the detector for the wear resistance of fabrics or clothes is mainly a Martindale wear resistance tester. The test method and the principle are as follows: the fabric that awaits measuring cuts out into the circular shape sample, put the sample on gland nut's bottom through-hole ring, put into gland nut with the abaculus again and press on the sample, then the internal thread through the compress tightly lid of adapter sleeve is screwed up with the external screw thread on gland nut upper portion downwards, thereby make the edge of sample compress tightly on gland nut's through-hole ring, the upper surface of the all the other positions (the work site) of sample hugs closely in the bottom of abaculus, the lower surface of the work site of sample exposes outside gland nut's through-hole downwards, accomplish the centre gripping installation of sample. And then, placing the sample and the sample clamp under the shaft sleeve of the clamp guide plate, and inserting the pin shaft into the blind hole of the upper connecting shaft of the connecting sleeve after penetrating the shaft sleeve. And completing the installation before the test. Starting the tester, driving the clamp guide plate by the driving device, and driving the sample clamp and the sample to perform friction motion with a preset load and a motion trail of a Lisharu graph (from a circle to a gradually narrowed ellipse until becoming a straight line, and then from the straight line to the gradually widened ellipse to the circle) on the abrasive plane of the grinding table by the pin shaft; and continuously repeating the friction movement until the sample is damaged, and measuring the wear resistance of the sample according to the friction times during damage.
The sample clamp used by the traditional Martindale wear-resistant tester has the following problems: 1. the height of the embedded block is slightly higher than the top of the inner cavity of the compression nut, the embedded block is almost completely arranged in the inner cavity of the compression nut, and the embedded block is difficult to take out and put in. 2. The diameter of the maximum part of the embedded block is obviously smaller than the inner diameter of the compression nut, so that the embedded block is difficult to be flush with the compression nut when being put in, and the working part of the sample exposed out of the through hole of the compression nut is inclined and not straight; during testing, the outward-inclined part of the test sample is in closer contact with the grinding material of the grinding table and is more seriously abraded, and the inward-contracted part is not in close contact with the grinding material of the grinding table and is not seriously abraded or is not abraded, so that the testing error is large and the testing result is inaccurate. 3. The internal thread of the pressing cover of the connecting sleeve is gradually screwed up with the external thread of the pressing nut, and then the in-process of pressing the inserted block down, circumferential static friction or sliding friction exists between the pressing cover and the inserted block, the screwing rotation of the pressing cover can drive the inserted block to rotate, and then circumferential relative movement and friction can be generated between the inserted block, the sample and the pressing nut through hole ring. The circumferential moving friction under the strong screwing down pressure can cause wrinkling and stacking of the sample and unevenness (inclination) of the working part of the sample, so that the test error is large and the test result is inaccurate; meanwhile, the circumferential moving friction under the tightening pressure can cause serious friction and abrasion of the edge part of the sample tightly attached to the through hole ring of the compression nut, so that the edge of the sample is seriously damaged when the sample fails to be clamped or the test does not reach the specified friction times, the sample falls off from a sample clamp, the test fails, the test efficiency is reduced, and the test cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sample anchor clamps for martindale wear test appearance uses this kind of sample anchor clamps to carry out the wear-resisting test of fabric, and its test operation is more convenient, and efficiency of software testing is high, the test cost is low, and the result of test is accurate, the error is little.
The utility model discloses realize that the technical scheme that its invention purpose adopted is, a sample anchor clamps for martindale wear test appearance, including abaculus and gland nut, its characterized in that:
the upper part of the compression nut is provided with internal threads; the insert is arranged below the internal thread of the compression nut; the middle part of the top surface of the embedded block is provided with a connecting shaft, and the upper part of the connecting shaft is provided with a blind hole for inserting a pin shaft; the lower part of the connecting shaft is tightly sleeved with a compaction plug through a bearing, and the external thread of the compaction plug is matched with the internal thread of the compression nut.
The utility model discloses a use method and the operation process of sample anchor clamps are: the fabric to be measured is cut into a circular sample, the sample is placed on a bottom through hole ring of a compression nut, the insert is placed into the compression nut and pressed on the sample, then an external thread of a compression plug is screwed downwards along an internal thread on the upper portion of the compression nut, the compression plug drives a connecting shaft and the insert to move downwards through a bearing of a tightening sleeve, so that the edge of the sample is pressed downwards on the through hole ring of the compression nut by the insert, the upper surfaces of the rest parts (working parts) of the sample are tightly attached to the bottom of the insert, the lower surface of the working part of the sample is exposed out of a through hole of the compression nut downwards, and the clamping and installation of the sample are completed. And then, placing the sample and the sample clamp on a grinding table grinding material right below a shaft sleeve of the clamp guide plate, and then, penetrating the pin shaft through the shaft sleeve and inserting the pin shaft into a blind hole of the connecting shaft. And starting the tester, driving the clamp guide plate by the driving device, and driving the sample clamp and the sample to perform friction motion with a specified load on the grinding material plane of the grinding table by the pin shaft, so that the wear resistance of the sample can be tested.
Compared with the prior art, the beneficial effects of the utility model are that:
firstly, the compaction plug of the utility model is connected with the connecting shaft above the embedded block through a bearing, and the compaction plug and the connecting shaft can freely rotate; therefore, in the rotating and downward moving process of matching the external threads of the compression plug and the internal threads of the compression nut, the compression plug can drive the connecting shaft and the embedded block to move downward, but the connecting shaft and the embedded block do not rotate along with the rotation of the connecting shaft and the embedded block, namely, circumferential relative movement and friction cannot be generated among the embedded block, the sample and a through hole ring at the bottom of the compression nut, and the embedded block only generates gradually increased downward static pressure to the bottom of the sample and the bottom of the compression nut and does not have circumferential friction force; therefore, the sample cannot be wrinkled and stacked due to circumferential friction in the pressing process, and unevenness (inclination) of the working part of the sample cannot be caused, so that the test error is small, and the test result is accurate; meanwhile, the clamping failure that the circumferential friction and the abrasion of the edge of the sample are serious and the sample cannot be clamped effectively and the test failure that the sample which is clamped reluctantly falls off from the clamp in the test process are avoided. The efficiency of the test is improved, test cost has been reduced.
The connecting shaft and the embedded block of the utility model are fixedly connected, and the compression plug and the connecting shaft are connected in a tight fit way through the bearing; therefore, except the free rotation between the compression plug and the connecting shaft, the compression plug, the connecting shaft and the insert block can be considered to be of an integral structure, and after the compression plug is screwed with the compression nut, the bottom of the insert block is automatically aligned and leveled with the bottom of the compression nut (the alignment precision depends on the processing precision of the internal threads of the compression plug and the internal threads of the compression nut). The phenomenon that the sample is inclined due to the fact that the insert blocks are difficult to align and level because the existing insert blocks and the pressing cover of the external connecting sleeve are separated, the separated insert blocks are manually placed, placed and pressed is avoided; and further, the small error of the test is ensured, and the test result is accurate.
Thirdly, than the current abaculus of almost putting into in the gland nut inner chamber completely, the utility model discloses a gland nut is surpassed far away to the connecting axle at abaculus top, and handheld connecting axle can be very convenient put into the abaculus or take out gland nut's inner chamber lower part, and its operation is more simple and convenient.
Further, the utility model discloses a stopper forms radial convex top cap at position above the external screw thread, and the plane shape and the size of top cap are the same with the plane shape and the size of gland nut bottom, and its plane shape is the circle by two parallel lines cut off the shape behind two symmetry arches.
Therefore, the pressing plug and/or the pressing nut can be screwed down conveniently by using an auxiliary mounting tool similar to a wrench.
The present invention will be described in further detail with reference to the following description of preferred embodiments and the accompanying drawings.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of the present embodiment.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a bottom view of fig. 1.
In the figure, designated 6 is a sample.
Detailed Description
Examples
Fig. 1 shows, a specific embodiment of the present invention is, a sample clamp for martindale abrasion tester, including an insert 1 and a gland nut 2, its characterized in that:
the upper part of the compression nut 2 is provided with internal threads; the insert block 1 is arranged below the internal thread of the compression nut 2; a connecting shaft 1a is arranged in the middle of the top surface of the embedded block 1, and a blind hole for inserting the pin shaft 3 is formed in the upper part of the connecting shaft 1 a; the lower part of the connecting shaft 1a is tightly sleeved with a compression plug 5 through a bearing 4, and the external thread of the compression plug 5 is matched with the internal thread of the compression nut 2.
Fig. 2 to 3 show that the press plug 5 of this example has a radially protruding cap 5a formed at a position above the external thread, and the cap 5a has the same plane shape and size as those of the bottom of the press nut 2, and has a plane shape in which two symmetrical arcs are cut by two parallel lines.
Claims (2)
1. The utility model provides a sample anchor clamps for martindale abrasion tester, includes abaculus (1) and gland nut (2), its characterized in that:
the upper part of the compression nut (2) is provided with internal threads; the insert (1) is arranged below the internal thread of the compression nut (2); a connecting shaft (1a) is arranged in the middle of the top surface of the embedded block (1), and a blind hole for inserting the pin shaft (3) is formed in the upper part of the connecting shaft (1 a); the lower part of the connecting shaft (1a) is tightly sleeved with a compaction plug (5) through a bearing (4), and the external thread of the compaction plug (5) is matched with the internal thread of the compaction nut (2).
2. The specimen holder for a martindale abrasion tester of claim 1, wherein:
the pressing plug (5) is provided with a radially protruding top cover (5a) at a position above the external thread, the planar shape and the size of the top cover (5a) are the same as those of the bottom of the pressing nut (2), and the planar shapes are the shapes of two symmetrical arches cut by two parallel lines.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202221238771.0U CN217359340U (en) | 2022-05-23 | 2022-05-23 | Sample clamp for Martindale wear-resistant tester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202221238771.0U CN217359340U (en) | 2022-05-23 | 2022-05-23 | Sample clamp for Martindale wear-resistant tester |
Publications (1)
Publication Number | Publication Date |
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CN217359340U true CN217359340U (en) | 2022-09-02 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202221238771.0U Active CN217359340U (en) | 2022-05-23 | 2022-05-23 | Sample clamp for Martindale wear-resistant tester |
Country Status (1)
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CN (1) | CN217359340U (en) |
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2022
- 2022-05-23 CN CN202221238771.0U patent/CN217359340U/en active Active
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