Dry-state fallen flocculus tester

Abstract

The utility model discloses a dry-state fallen flocculus tester, which comprises a main shaft, a driving device for driving the main shaft to reciprocate and twist, a first positioning plate mounted on one side of the main shaft, and a positioning component rotationally connected onto the first positioning plate and extending to the spiral groove, the peripheral wall of the positioning assembly is in rolling connection with the inner wall of the spiral groove, the driving device comprises a pushing plate, a disc, an external thread bearing and a motor for driving the disc to rotate, the pushing plate is in sliding connection with the first positioning plate in the axial direction of the main shaft, and a sliding groove is longitudinally formed in the pushing plate; the external thread bearing is installed on the disc and eccentrically arranged with the output shaft of the motor, the external thread bearing is inserted into the sliding groove and is in rolling connection with the inner wall of the sliding groove, and the pushing plate is connected with the main shaft bearing through the bolt bearing. And the equipment can operate at a lower decibel.

Description

Technical Field

[0001] The utility model relates to the technical field of cloth lint testing, in particular to a dry lint testing instrument. Background Art

[0002] The dry lint tester can be used to measure the lint, lint coefficient, standard deviation, coefficient of variation and other indicators of medical protective materials, non-woven fabrics and other textile materials.

[0003] Among them, the dry lint tester performs reciprocating stretching and twisting on the sample and uses a particle counter to count the fallen lint, thereby evaluating the lint shedding performance of the fabric.

[0004] There is a utility model patent with authorization announcement number CN219038768U that discloses a dry fluff measuring instrument, which utilizes the spiral groove on the positioning block and the main shaft to achieve the torsion of the main shaft and the sample, and utilizes the crank-connecting rod mechanism to achieve the reciprocating movement of the main shaft. Since the crank-connecting rod mechanism includes connecting rods hinged to each other, one end of the connecting rod is connected to the main shaft through a coupling, and the other end of the connecting rod is connected to a disc, the rotation of the disc is utilized to drive the torsion and reciprocating movement of the main shaft.

[0005] Among them, in order to ensure the stable reciprocating movement and torsional action of the spindle, the crank mechanism, the spindle and the positioning block are all made of metal. When the crank-connecting rod mechanism is in operation, it will generate a lot of noise. During the process of the crank-connecting rod mechanism reciprocatingly pushing the spindle, the swing of the connecting rod may easily cause the spindle to shake slightly, making it impossible for the spindle to run stably.

[0006] Therefore, how to design a low-noise dry lint tester has become a technical problem that needs to be solved urgently by people in this field. Utility Model Content

[0007] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of the present utility model is to provide a dry lint falling tester to solve the problem of high noise of the dry lint falling tester.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A dry state flocculent tester includes a first mounting seat and a second mounting seat for installing a specimen. A main shaft is fixedly provided on the second mounting seat. A helical groove is spirally wound on the peripheral wall of the main shaft. It further includes a driving device for driving the main shaft to reciprocate and twist. The driving device includes a first positioning plate installed on one side of the main shaft. A positioning component is rotatably connected to the first positioning plate. The end of the positioning component extends into the helical groove and is in rolling connection with the inner wall of the helical groove. The driving device includes a pushing plate, a disc, an external thread bearing, and a motor for driving the disc to rotate. The pushing plate is slidably connected to the first positioning plate along the axial direction of the main shaft. A longitudinal sliding groove is provided on the pushing plate. The external thread bearing is installed on the disc and is eccentrically arranged with the output shaft of the motor. The external thread bearing is inserted into the sliding groove and is in rolling connection with the inner wall of the sliding groove. The pushing plate is connected to the main shaft bearing through a bolt bearing.

[0010] Further, a slide rail arranged along the axial direction of the main shaft is fixedly provided on the first positioning plate. A slider is fixedly provided on the pushing plate. The slider is slidably connected to the slide rail.

[0011] Further, a positioning seat is fixedly connected to the pushing plate through a bolt. The bearing part of the bolt bearing is installed on the positioning seat. The bolt part of the bolt bearing is fixedly connected to the main shaft.

[0012] Further, the positioning component includes a pin and a pin shaft sleeve. The pin is fixedly installed on the first positioning plate. The pin shaft sleeve is sleeved on the pin. The pin shaft sleeve is rotatably connected to the pin. The pin shaft sleeve extends into the helical groove. The outer wall of the pin shaft sleeve is in rolling connection with the inner wall of the helical groove.

[0013] Further, the pin shaft sleeve is made of stainless steel material or polyoxymethylene plastic material.

[0014] Further, it further includes a vertically arranged second positioning plate. A linear sliding bearing coaxially arranged with the main shaft is fixedly provided on the second positioning plate. The linear sliding bearing is connected to the main shaft bearing.

[0015] Further, it further includes an operation box. The first mounting seat and the second mounting seat are both installed in the inner cavity of the operation box. The first mounting seat and the second mounting seat are arranged opposite to each other. The first mounting seat is fixedly connected to the operation box.

[0016] Further, the operation box is made of acrylic material.

[0017] Further, a particle counter collection port is provided inside the operation box. The particle counter collection port is installed between the first mounting seat and the second mounting seat.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: The positioning component fixed on the first positioning plate of the present utility model is in rolling connection with the inner wall of the spiral groove. While the main shaft makes reciprocating movements, it can reduce the friction between the positioning component and the inner wall of the spiral groove, thereby reducing the generation of noise. The driving device pushes the main shaft through the push plate slidably installed on the first positioning plate, improving the stability of the reciprocating movement of the main shaft. By using the sliding connection between the external thread bearing on the disc and the inner wall of the sliding groove, compared with the friction between the two articulated connecting rods in the traditional crank - connecting rod mechanism, the loudness of the noise is reduced, enabling the equipment to operate at a lower decibel level. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is a schematic diagram of the internal structure of the operation box of the present utility model;

[0021] Figure 3 is a first - angle cross - sectional view of the present utility model;

[0022] Figure 4 is a second - angle cross - sectional view of the present utility model;

[0023] Figure 5 is a schematic diagram of the internal structure of the machine body;

[0024] Figure 6 is a first unfolded schematic diagram of the present utility model;

[0025] Figure 7 is a second unfolded schematic diagram of the present utility model;

[0026] Figure 8 is a schematic diagram of the structure of the positioning component.

[0027] In the figure: 1. Machine body; 10. Motor; 11. First positioning plate; 12. Slide rail; 13. Push plate; 131. Slide block; 132. Sliding groove; 14. Disc; 15. External thread bearing; 16. Positioning seat; 17. Bolt bearing; 18. Second positioning plate; 19. Linear sliding bearing; 2. Operation box; 21. First mounting seat; 22. Second mounting seat; 23. Particle counter sampling port; 3. Main shaft; 31. Spiral groove; 4. Positioning component; 41. Pin; 42. Pin shaft sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] This embodiment provides a dry state floc tester, which is mainly used to reduce the problem of generating relatively large noise during the torsion and reciprocating movement of the tester.

[0030] As Figure 1 and Figure 2 shown, it includes a machine body 1 and an operation box 2 located on the side of the machine body 1. Among them, a first mounting seat 21 and a second mounting seat 22 opposite to the first mounting seat 21 are fixedly arranged inside the operation box 2. A main shaft 3 fixedly connected to the second mounting seat 22 is arranged inside the machine body 1. It also includes a driving device for driving the main shaft 3 to reciprocate along its own axis and twist around its own axis.

[0031] Specifically, before the test, one end of the sample needs to be sleeved on the first mounting seat 21 and tied with a cable tie, and then the other end of the sample is sleeved on the second mounting seat 22 and also tied with a cable tie to fix the sample.

[0032] It should be noted here that the operation box 2 is made of transparent acrylic material or plastic material, and the torsion and repeated stretching during the sample test can be clearly seen, which is convenient for observing the falling of fluff on the sample.

[0033] In order to detect the falling fluff, in this embodiment, as Figure 2 and Figure 3 shown, a particle counter collection port 23 is also fixedly installed inside the operation box 2. Since using the particle counter collection port 23 to detect the amount of falling fluff is a common means for those skilled in the art, therefore, the particle counter collection port 23 will not be elaborated too much.

[0034] In order to realize the stable movement of the main shaft 3, in this embodiment, as Figure 3 、 Figure 4 and Figure 7 shown, a second positioning plate 18 extending vertically upward is fixedly arranged between the machine body 1 and the operation box 2. A linear sliding bearing 19 is fixedly installed on the second positioning plate 18. Among them, the axis of the linear sliding bearing 19 coincides with the axis of the second mounting seat 22. The main shaft 3 passes through the linear sliding bearing 19, and the main shaft 3 is connected to the linear sliding bearing 19 by a bearing to improve the stability of the main shaft 3 during the reciprocating movement.

[0035] When the main shaft 3 is reciprocating, in order to enable the main shaft 3 to be twisted, in this embodiment, as Figure 4 and Figure 7 shown, a first positioning plate 11 which is fixedly arranged inside the machine body 1 and extends vertically upward is arranged on the side of the main shaft 3. A spiral groove 31 which spirally winds around the axis of the main shaft 3 is arranged on the side wall of the main shaft 3. A positioning assembly 4 is fixedly arranged on the first positioning plate 11. Wherein, the end of the positioning assembly 4 is inserted into the spiral groove 31. The outer wall of the end of the positioning assembly 4 abuts against the inner wall of the spiral groove 31, and the end of the positioning assembly 4 can move relative to the main shaft 3.

[0036] Through the above arrangement, when the main shaft 3 moves along the axis of the main shaft 3 under the drive of the driving device, since the positioning assembly 4 is fixed on the first positioning plate 11 and the end of the positioning assembly 4 is inserted into the spiral groove 31, the positioning assembly 4 and the spiral groove 31 move relatively, and further the main shaft 3 twists around its own axis, so as to be able to perform a torsion test on the specimen.

[0037] Since the positioning assembly 4 and the spiral groove 31 move relative to each other, at this time, the outer wall of the positioning assembly 4 and the inner wall of the spiral groove 31 rub against each other, which is likely to generate a large amount of noise. Therefore, in this embodiment, the positioning assembly 4 includes a pin 41 and a pin shaft sleeve 42. Wherein, the pin 41 is fixedly installed on the first positioning plate 11. The pin shaft sleeve 42 is sleeved on the pin 41 and is rotatably connected with the pin 41. The pin shaft sleeve 42 is columnar and is inserted into the spiral groove 31. The peripheral wall of the pin shaft sleeve 42 is in rolling connection with the inner wall of the spiral groove 31.

[0038] Specifically, the pin shaft sleeve 42 can be made of stainless steel or polyoxymethylene plastic. Compared with the scraping between the traditional positioning block and the inner wall of the spiral groove 31, the generation of noise can be weakened.

[0039] Under normal circumstances, the reciprocating movement of the main shaft 3 is realized by a crank and connecting rod mechanism. At this time, one end of the crank and connecting rod mechanism is connected with the main shaft 3, and the other end is connected with the driving device. Wherein, the two connecting rods which are hinged to each other in the crank and connecting rod mechanism will swing. By the pushing of the connecting rod on the main shaft 3, the stability of the main shaft 3 during the reciprocating movement is relatively low.

[0040] Therefore, in this embodiment, as Figure 5 and Figure 6As shown, a slide rail 12 arranged along the axial direction of the main shaft 3 is fixedly provided on the first positioning plate 11. It further includes a vertically arranged pushing plate 13. Among them, a slider 131 is fixedly provided on the pushing plate 13. The slider 131 is slidably connected to the slide rail 12. The side wall of the pushing plate 13 is fixedly connected to a positioning seat 16 through bolts. The positioning seat 16 is connected to the main shaft 3 through a bolt bearing 17. Among them, a driving device is used to push the pushing plate 13 to move along the axial direction of the main shaft 3.

[0041] In order to further improve the stability of the movement of the pushing plate 13, in this embodiment, as Figure 5 and Figure 6 shown, two groups of slide rails 12 are provided and are distributed up and down on the first positioning plate 11. Two sliders 131 are provided and are respectively slidably connected to the corresponding slide rails 12 to improve the stability of the movement of the pushing plate 13.

[0042] In order to make the pushing plate 13 move stably along the axial direction of the main shaft 3, in this embodiment, as Figure 4 、 Figure 5 and Figure 6 shown, the driving device includes a motor 10, a disc 14, and an external thread bearing 15. A sliding groove 132 arranged along the vertical direction is provided on the pushing plate 13. The output shaft of the motor 10 is fixedly connected to the disc 14. The external thread bearing 15 is installed on the disc 14. The external thread bearing 15 is eccentrically arranged with respect to the output shaft of the motor 10. The external thread bearing 15 is inserted into the sliding groove 132. The outer wall of the external thread bearing 15 is slidably connected to the inner wall of the sliding groove 132.

[0043] Through the above settings, when the motor 10 drives the disc 14 to rotate, the external thread bearing 15 rotates around the axis of the output shaft of the motor 10. Since the external thread bearing 15 is inserted inside the sliding groove 132, as the position of the external thread bearing 15 changes, the pushing plate 13 can be made to move back and forth along the axial direction of the main shaft 3.

[0044] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A dry lint tester, comprising a first mounting seat (21) and a second mounting seat (22) for mounting a sample, a main shaft (3) being fixedly mounted on the second mounting seat (22), a spiral groove (31) being spirally wound on a peripheral wall of the main shaft (3), and a driving device for driving the main shaft (3) to reciprocate and twist, characterized in that: The invention comprises a first positioning plate (11) installed on one side of a main shaft (3), a positioning assembly (4) being rotatably connected to the first positioning plate (11), an end of the positioning assembly (4) extending into the spiral groove (31) and being rollingly connected to the inner wall of the spiral groove (31), a driving device comprising a push plate (13), a disc (14), an external threaded bearing (15) and a motor (10) for driving the disc (14) to rotate, the push plate (13) and the first positioning plate (11) being slidably connected along the axial direction of the main shaft (3), the push plate (13) being provided with a longitudinally arranged sliding groove (132), the external threaded bearing (15) being installed on the disc (14) and being eccentrically arranged with respect to the output shaft of the motor (10), the external threaded bearing (15) being inserted into the sliding groove (132) and being rollingly connected to the inner wall of the sliding groove (132), and the push plate (13) being connected to the bearing of the main shaft (3) via a bolt bearing (17).

2. A dry lint tester according to claim 1, characterized in that: A slide rail (12) arranged axially along the main shaft (3) is fixedly provided on the first positioning plate (11), and a sliding block (131) is fixedly provided on the push plate (13), wherein the sliding block (131) is slidably connected to the slide rail (12).

3. A dry lint tester according to claim 1, characterized in that: The push plate (13) is fixedly connected with a positioning seat (16) by means of bolts, the bearing part of the bolt bearing (17) is installed on the positioning seat (16), and the bolt part of the bolt bearing (17) is fixedly connected with the main shaft (3).

4. A dry lint tester according to claim 1, characterized in that: The positioning assembly (4) comprises a latch (41) and a latch shaft sleeve (42); the latch (41) is fixedly mounted on the first positioning plate (11); the latch shaft sleeve (42) is sleeved on the latch (41); the latch shaft sleeve (42) is rotatably connected to the latch (41); the latch shaft sleeve (42) extends into the spiral groove (31); and the outer wall of the latch shaft sleeve (42) is rollingly connected to the inner wall of the spiral groove (31).

5. A dry lint tester according to claim 4, characterized in that: The latch shaft sleeve (42) is made of stainless steel or polyoxymethylene plastic.

6. A dry lint tester according to claim 1, characterized in that: It also comprises a second positioning plate (18) arranged vertically, on which a linear sliding bearing (19) arranged coaxially with the main shaft (3) is fixedly provided, and the linear sliding bearing (19) is connected to the bearing of the main shaft (3).

7. A dry lint tester according to claim 1, characterized in that: It also comprises an operating box (2), wherein the first mounting seat (21) and the second mounting seat (22) are both mounted in the inner cavity of the operating box (2), the first mounting seat (21) and the second mounting seat (22) are arranged opposite to each other, and the first mounting seat (21) is fixedly connected to the operating box (2).

8. A dry lint tester according to claim 7, characterized in that: The operating box (2) is made of acrylic material.

9. A dry lint tester according to claim 7, characterized in that: A particle counter (23) is provided inside the operating box (2), and the particle counter (23) is installed between the first mounting seat (21) and the second mounting seat (22).

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