Integrated online detection device for yarn density and yarn evenness of spinning

Abstract

The invention relates to the technical field of spinning yarn detection, in particular to a spinning yarn density and yarn evenness integrated online detection device which comprises a base, a supporting frame is fixedly connected to the surface of the base, an unwinding roller is movably connected to the inner side of the supporting frame, and a winding roller is movably connected to the inner side of the supporting frame. The motor runs to drive the first rotating rod to rotate, two groups of brush rollers can rotate simultaneously under the action of a first transmission belt, so that the brush rollers can clean the upper surface and the lower surface of the spinning yarn, fluff can be prevented from adhering to the spinning yarn, cleanliness of the spinning yarn can be guaranteed, interference in the detection process is reduced, and the detection efficiency is improved. And meanwhile, through the arrangement of the tooth combs, the brush roller rotates and makes friction contact with the tooth combs, fluff cleaned by the brush roller can be scraped by the tooth combs, the fluff can be prevented from being accumulated on the brush roller, and the cleaning effect of the brush roller on the spinning yarn can be avoided.

Description

Technical Field

[0001] This invention relates to the field of yarn testing technology, specifically to an integrated online testing device for yarn linear density and evenness. Background Technology

[0002] Yarn is a continuous linear material made from natural fibers (such as cotton, linen, silk, and wool) or chemical fibers (such as polyester, nylon, and acrylic) through a spinning process. Its core function is as an intermediate material in the manufacture of woven fabrics, knitted fabrics, braided fabrics, and some nonwoven fabrics. To promptly detect linear density deviations and unevenness during production and to monitor yarn quality in real time, density and evenness testing are typically performed on the yarn. Yarn density testing refers to the mass of yarn per unit length, aiming to assess whether the yarn thickness meets design specifications. Yarn evenness testing refers to the degree of variation in thickness (mass / diameter) along the yarn length, reflecting the yarn's uniformity. An integrated online detection device for yarn linear density and evenness is a real-time automatic detection device integrated into the spinning production line. It can continuously and non-contactly monitor both the linear density and evenness of the yarn simultaneously during production, primarily using capacitance, photoelectric, or laser diameter measurement technologies to sense changes in yarn diameter or mass. By monitoring the yarn thickness and uniformity in real time, defects such as fine details and thick spots can be detected in a timely manner, preventing unqualified products from flowing into the next process. At the same time, it is convenient to adjust process conditions such as draft ratio, tension, and twisting based on the test data, which helps to ensure product consistency.

[0003] In existing technologies, when using an integrated online detection device for density and evenness of yarn to detect the density and evenness of spun yarn, any "non-yarn substances" attached to the yarn, such as lint and dust, can become sources of interference. Because the lint on the yarn cannot be effectively processed, the yarn cannot pass through the detection device in the most compact and accurate state, which can easily affect the quality and effect of yarn detection. Therefore, in order to solve the above problems, an integrated online detection device for yarn density and evenness is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated online detection device for yarn linear density and yarn evenness, in order to solve the problem mentioned in the background art that the yarn cannot pass through the detection device in the most compact and realistic state due to the inability to effectively process the fluff on the yarn, which in turn easily affects the quality and effect of yarn detection.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an integrated online detection device for yarn linear density and yarn evenness, comprising a base, a support frame fixedly connected to the surface of the base, an unwinding roller movably connected to the inner side of the support frame, a take-up roller movably connected to the inner side of the support frame, a guide roller movably arranged on the inner side of the support frame, a detection chamber fixedly connected to the surface of the base, a capacitive sensor and a photoelectric sensor fixedly installed on the inner wall of the detection chamber, and a controller and a display screen fixedly installed on the surface of the detection chamber;

[0006] The surface of the base is provided with a cleaning mechanism, a dust collection mechanism, and an auxiliary mechanism;

[0007] The cleaning mechanism includes a fixed frame, which is fixedly connected to the upper surface of the base. A first rotating rod is movably connected to the inner side of the fixed frame, and a brush roller is fixedly connected to the surface of the first rotating rod. A toothed comb is provided on the inner side of the fixed frame.

[0008] The dust collection mechanism includes a dust collection hood, which is fixedly connected to the inner surface of the fixed frame and a dust collection pipe is fixedly connected to the surface of the dust collection hood.

[0009] The auxiliary mechanism includes a connecting rod, which is disposed inside the fixed frame, and a spring is fixedly connected to the inner wall of the connecting rod. A movable rod is fixedly connected to the surface of the comb.

[0010] Preferably, the cleaning mechanism further includes a motor, which is fixedly mounted on the surface of the mounting frame, and the first rotating rod is fixedly connected to the output end of the motor.

[0011] Preferably, the first rotating rod is arranged in two groups and moves inside the fixed frame, and the brush rollers are arranged in two groups and connected to the first rotating rods respectively.

[0012] Preferably, the surface of the first rotating rod is movably connected to a first transmission belt, and the two sets of the first rotating rods are movably connected to the two ends of the first transmission belt through pulleys, and the toothed combs are arranged in two sets and correspond to the brush rollers.

[0013] Preferably, the vacuuming mechanism further includes a collection box, which is disposed on one side of the base, and one end of the vacuuming pipe is fixedly connected to the vacuuming hood, the other end of the vacuuming pipe is fixedly connected to the collection box, and the vacuuming pipe is fixedly connected to the inside of the fixing frame.

[0014] Preferably, a filter plate is fixedly connected to the inner side of the collection box, and an air inlet is fixedly connected to the surface of the collection box, with a fan movably arranged inside the air inlet.

[0015] Preferably, a fixing rod is fixedly connected to the inner wall of the air inlet, and a connecting frame is fixedly connected to the end of the fixing rod away from the air inlet. A second rotating rod is movably connected to the inner side of the connecting frame, and a first conical tooth is fixedly connected to the surface of the second rotating rod.

[0016] Preferably, the first conical tooth is movably located inside the connecting frame, and the second rotating rod is movably connected to the air inlet, with a second transmission belt movably connected to the surface of the second rotating rod.

[0017] Preferably, one end of the second transmission belt is movably connected to the first rotating rod via a pulley, and the other end of the second transmission belt is movably connected to the second rotating rod via a pulley. A third rotating rod is fixedly connected to the surface of the fan, and a second conical tooth is fixedly connected to the end of the third rotating rod away from the fan. Both the third rotating rod and the second conical tooth are movably located inside the connecting frame.

[0018] Preferably, the auxiliary mechanism further includes a fixing plate, which is fixedly connected to the inner surface of the fixing frame, and the connecting rod is fixedly connected to the fixing plate. One end of the spring is fixedly connected to the connecting rod, and the other end of the spring is fixedly connected to the end of the movable rod away from the comb. The movable rod moves within the connecting rod.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The motor drives the first rotating rod to rotate, which, in conjunction with the first transmission belt, enables the two sets of brush rollers to rotate simultaneously. This allows the brush rollers to clean the upper and lower surfaces of the yarn, preventing lint from adhering to the yarn and ensuring its cleanliness. This reduces interference during the testing process and helps guarantee testing quality and effectiveness. Simultaneously, the toothed comb design causes friction between the rotating brush rollers and the comb, allowing the comb to scrape off the lint cleaned by the brush rollers, preventing lint accumulation on the brush rollers and improving the cleaning effect on the yarn.

[0021] 2. By setting the second transmission belt, when the first rotating rod rotates, the second rotating rod can drive the first conical tooth to rotate accordingly, realizing the transmission of the first conical tooth to the second conical tooth and the support frame, thereby causing the fan to rotate. This facilitates the adsorption of the lint scraped off by the comb through the dust suction hood, allowing the lint to enter the inside of the collection box through the dust suction pipe for collection. This facilitates the processing of the lint, prevents it from scattering and causing secondary pollution to the yarn, and better ensures the quality of the spun yarn.

[0022] 3. The spring design allows the movable rod to move inside the connecting rod when the brush roller and the comb come into contact and rub against each other, causing the spring to deform. Through the elasticity of the spring, the comb can undergo slight displacement, which helps to alleviate the impact between the two and reduce hard collisions. This protects the brush roller and the comb, reduces wear, and extends their service life. Attached Figure Description

[0023] Figure 1 This is a front view schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a side view of the structure of the present invention;

[0025] Figure 3 This is a side-view exploded view of the structure of the present invention;

[0026] Figure 4 This is an exploded side view of the structure of the mounting bracket and dust hood of the present invention;

[0027] Figure 5 This is a top sectional view of the structure of the brush roller and the first transmission belt of the present invention;

[0028] Figure 6 This is an exploded cross-sectional view of the structure of the collection box and air inlet of the present invention.

[0029] Figure 7 This is a side sectional view of the structure of the collection box and fan of the present invention;

[0030] Figure 8 This is an exploded front view of the structure of the comb and fixing plate of the present invention;

[0031] Figure 9 This is an exploded cross-sectional view of the structure of the connecting rod and the movable rod of the present invention.

[0032] In the diagram: 1. Base; 11. Support frame; 12. Unwind roller; 13. Rewind roller; 14. Guide roller; 15. Detection chamber; 16. Capacitive sensor; 17. Photoelectric sensor; 18. Controller; 19. Display screen; 2. Fixing frame; 21. First rotating rod; 22. Brush roller; 23. Motor; 24. First transmission belt; 25. Toothed comb; 3. Dust hood; 31. Dust suction pipe; 32. Collection box; 33. Filter plate; 34. Air inlet; 35. Fan; 36. Fixing rod; 37. Connecting frame; 38. Second rotating rod; 39. First conical tooth; 310. Second transmission belt; 311. Third rotating rod; 312. Second conical tooth; 4. Fixing plate; 41. Connecting rod; 42. Spring; 43. Movable rod. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-9 One embodiment provided by the present invention:

[0035] The capacitive sensor 16, photoelectric sensor 17, controller 18, display screen 19 and motor 23 used in this application are products that can be purchased directly from the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0036] An integrated online detection device for yarn linear density and evenness includes a base 1, a support frame 11 fixedly connected to the surface of the base 1, an unwinding roller 12 movably connected to the inner side of the support frame 11, a take-up roller 13 movably connected to the inner side of the support frame 11, a guide roller 14 movably disposed on the inner side of the support frame 11, a detection chamber 15 fixedly connected to the surface of the base 1, a capacitive sensor 16 and a photoelectric sensor 17 fixedly installed on the inner wall of the detection chamber 15, and a controller 18 and a display screen 19 fixedly installed on the surface of the detection chamber 15. The unwinding roller 12 and the take-up roller 13 are configured to unwind and take up the yarn, and the guide roller 14 is configured to assist in conveying and guiding the yarn. When the yarn enters the detection chamber 15, the combined action of the capacitance sensor 16 and the photoelectric sensor 17 causes the density change of the yarn to cause the capacitance value to fluctuate and the light flux to change, thereby enabling the detection of the yarn density and evenness. With the controller 18 and the display screen 19, the detection data can be processed and displayed.

[0037] The base 1 has a cleaning mechanism, a vacuuming mechanism, and an auxiliary mechanism. The cleaning mechanism includes a fixed frame 2, which is fixedly connected to the upper surface of the base 1. A first rotating rod 21 is movably connected to the inner side of the fixed frame 2, and a brush roller 22 is fixedly connected to the surface of the first rotating rod 21. A toothed comb 25 is provided on the inner side of the fixed frame 2. The vacuuming mechanism includes a vacuum hood 3, which is fixedly connected to the inner surface of the fixed frame 2, and a vacuum pipe 31 is fixedly connected to the surface of the vacuum hood 3. The auxiliary mechanism includes a connecting rod 41, which is located on the inner side of the fixed frame 2, and a spring 42 is fixedly connected to the inner wall of the connecting rod 41. A movable rod 43 is fixedly connected to the surface of the toothed comb 25. The cleaning mechanism can treat lint and prevent lint from adhering to the yarn. The vacuuming mechanism can collect lint. The auxiliary mechanism can protect the brush roller 22 and the toothed comb 25, thus ensuring their service life.

[0038] Furthermore, the cleaning mechanism also includes a motor 23, which is fixedly mounted on the surface of the fixed frame 2. The first rotating rod 21 is fixedly connected to the output end of the motor 23. The motor 23 drives the corresponding first rotating rod 21 to rotate, which can realize the rotation of the brush roller 22. With the setting of the first transmission belt 24, the two sets of brush rollers 22 can rotate simultaneously, which facilitates the brush rollers 22 to clean the upper and lower surfaces of the yarn, thereby avoiding the adhesion of lint and preventing lint from interfering with the detection.

[0039] Furthermore, the first rotating rod 21 is arranged in two sets inside the fixed frame 2, and the brush roller 22 is arranged in two sets corresponding to the first rotating rod 21. The first rotating rod 21 drives the brush roller 22 to rotate, so that the brush roller 22 can rub against the yarn, thereby facilitating the brush roller 22 to clean and sweep away the lint on the yarn, so that the lint can adhere to the brush roller 22, thereby ensuring the quality of the yarn and facilitating better inspection of the yarn.

[0040] Furthermore, a first transmission belt 24 is movably connected to the surface of the first rotating rod 21. The two sets of first rotating rods 21 are movably connected to the two ends of the first transmission belt 24 through pulleys. The toothed combs 25 are arranged in two sets and correspond to the brush roller 22. Through the arrangement of the toothed combs 25, when the brush roller 22 rotates and comes into contact with and rubs against the toothed combs 25, the hair swept by the brush roller 22 can be scraped off by the action of the toothed combs 25, thereby ensuring the cleanliness of the brush roller 22 and thus ensuring the effect and quality of the brush roller 22 in cleaning the yarn.

[0041] Furthermore, the vacuuming mechanism also includes a collection box 32, which is located on one side of the base 1. One end of the vacuum pipe 31 is fixedly connected to the vacuum hood 3, and the other end of the vacuum pipe 31 is fixedly connected to the collection box 32. The vacuum pipe 31 is fixedly connected to the inside of the fixing frame 2. The vacuum hood 3 and the collection box 32 are connected by the vacuum pipe 31, so that when the fan 35 rotates, the vacuum hood 3 can suck up the lint, and the lint can enter the inside of the collection box 32 through the vacuum pipe 31 for collection, preventing the lint from causing secondary pollution to the yarn.

[0042] Furthermore, a filter plate 33 is fixedly connected to the inner side of the collection box 32, and an air inlet 34 is fixedly connected to the surface of the collection box 32. A fan 35 is movably arranged inside the air inlet 34. Through the setting of the filter plate 33, the adsorbed lint can be intercepted, thereby facilitating the collection of lint for centralized processing.

[0043] Furthermore, a fixing rod 36 is fixedly connected to the inner wall of the air inlet 34, and a connecting frame 37 is fixedly connected to the end of the fixing rod 36 away from the air inlet 34. A second rotating rod 38 is movably connected to the inner side of the connecting frame 37, and a first conical tooth 39 is fixedly connected to the surface of the second rotating rod 38. Through the setting of the second rotating rod 38 and the first conical tooth 39, the second rotating rod 38 can rotate at the same time as the first rotating rod 21 rotates, thereby facilitating the rotation of the first conical tooth 39 and realizing the transmission of the second conical tooth 312. This enables the third rotating rod 311 to drive the fan 35 to rotate, so that the dust collection hood 3 can suck the lint into the collection box 32 under the action of the fan 35, which can prevent the lint from scattering.

[0044] Furthermore, the first conical tooth 39 is movable inside the connecting frame 37, and the second rotating rod 38 is movably connected to the air inlet 34. The surface of the second rotating rod 38 is movably connected to the second transmission belt 310. Through the setting of the second transmission belt 310, the rotation of the first rotating rod 21 can drive the second transmission belt 310, thereby facilitating the rotation of the second rotating rod 38 and causing the first conical tooth 39 to drive the second conical tooth 312 to rotate, thereby realizing the rotation of the third rotating rod 311. When the brush roller 22 cleans the lint on the spinning yarn, the dust suction hood 3 can adsorb the lint, thereby achieving dust removal.

[0045] Furthermore, one end of the second transmission belt 310 is movably connected to the first rotating rod 21 via a pulley, and the other end of the second transmission belt 310 is movably connected to the second rotating rod 38 via a pulley. A third rotating rod 311 is fixedly connected to the surface of the fan 35, and a second conical tooth 312 is fixedly connected to the end of the third rotating rod 311 away from the fan 35. Both the third rotating rod 311 and the second conical tooth 312 are movably located inside the connecting frame 37. Through the setting of the second conical tooth 312, when the first conical tooth 39 rotates under the action of the second rotating rod 38, the first conical tooth 39 can transmit power to the second conical tooth 312, thereby facilitating the third rotating rod 311 to drive the fan 35 to rotate and achieve air suction.

[0046] Furthermore, the auxiliary mechanism also includes a fixed plate 4, which is fixedly connected to the inner surface of the fixed frame 2. The connecting rod 41 is fixedly connected to the fixed plate 4. One end of the spring 42 is fixedly connected to the connecting rod 41, and the other end of the spring 42 is fixedly connected to the end of the movable rod 43 away from the comb 25. The movable rod 43 moves inside the connecting rod 41. Due to the elasticity of the spring 42, the comb 25 has the ability to yield. When the brush roller 22 rotates and drives the bristles to contact the comb 25, the comb 25 will undergo a slight displacement under the action of the spring 42. This can absorb part of the impact force and convert it into elastic potential energy, thereby reducing the wear on the bristles on the brush roller 22 and the comb 25.

[0047] Working principle: During use, the motor 23 is electrically connected to an external power source. The operator starts the motor 23 by pressing the switch. The motor 23 drives the corresponding first rotating rod 21 to rotate. The first transmission belt 24 moves under the action of the first rotating rod 21 and drives another set of first rotating rods 21 to rotate. Then, the two sets of brush rollers 22 rotate under the action of the first rotating rods 21. The brush rollers 22 rotate and come into contact and rub against the surface of the yarn, thereby sweeping away the lint adhering to the yarn and cleaning the yarn. At the same time, the brush rollers 22 come into contact and rub against the comb 25 during rotation, so that the comb 25 scrapes off the lint on the brush rollers 22 and prevents the lint from accumulating on the brush rollers 22.

[0048] When the first rotating rod 21 rotates, the second transmission belt 310 moves under the action of the first rotating rod 21 and drives the second rotating rod 38. The second rotating rod 38 then rotates and drives the first conical tooth 39 to rotate. The rotation of the first conical tooth 39 drives the second conical tooth 312. The third rotating rod 311 then drives the fan 35 to rotate. The rotation of the fan 35 allows the dust suction hood 3 to absorb the lint scraped off by the comb 25. The lint then enters the inside of the collection box 32 through the dust suction hood 3 and the suction pipe 31 and is intercepted by the filter plate 33, thereby collecting the lint. At the same time, the dust suction hood 3 can also suck up dust and other particles on the yarn during the cleaning process of the brush roller 22.

[0049] When the brush roller 22 rotates and comes into contact and rubs against the comb 25, the comb 25 is subjected to force, which causes the movable rod 43 to move and move inward toward the connecting rod 41. As a result, the spring 42 deforms, and the comb 25 undergoes a certain degree of slight displacement, thereby achieving the "yielding" of the comb 25, reducing some of the impact force and reducing hard contact, thus protecting the brush roller 22 and the comb 25.

[0050] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, using the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. An integrated online detection device for yarn linear density and yarn evenness, comprising a base (1), a support frame (11) fixedly connected to the surface of the base (1), an unwinding roller (12) movably connected to the inner side of the support frame (11), a winding roller (13) movably connected to the inner side of the support frame (11), a guide roller (14) movably arranged on the inner side of the support frame (11), a detection chamber (15) fixedly connected to the surface of the base (1), a capacitive sensor (16) and a photoelectric sensor (17) fixedly installed on the inner wall of the detection chamber (15), and a controller (18) and a display screen (19) fixedly installed on the surface of the detection chamber (15). Its features are, The surface of the base (1) is provided with a cleaning mechanism, the surface of the base (1) is provided with a dust suction mechanism, and the surface of the base (1) is provided with an auxiliary mechanism; The cleaning mechanism includes a fixed frame (2), which is fixedly connected to the upper surface of the base (1), and a first rotating rod (21) is movably connected to the inner side of the fixed frame (2), and a brush roller (22) is fixedly connected to the surface of the first rotating rod (21). A toothed comb (25) is provided on the inner side of the fixed frame (2). The vacuuming mechanism includes a vacuum hood (3), which is fixedly connected to the inner surface of the fixed frame (2) and a vacuum pipe (31) is fixedly connected to the surface of the vacuum hood (3); The auxiliary mechanism includes a connecting rod (41), which is located inside the fixed frame (2), and a spring (42) is fixedly connected to the inner wall of the connecting rod (41). A movable rod (43) is fixedly connected to the surface of the comb (25).

2. The integrated online detection device for yarn linear density and evenness according to claim 1, characterized in that: The cleaning mechanism also includes a motor (23), which is fixedly mounted on the surface of the fixed frame (2), and the first rotating rod (21) is fixedly connected to the output end of the motor (23).

3. The integrated online detection device for yarn linear density and evenness according to claim 2, characterized in that: The first rotating rod (21) is in two sets moving inside the fixed frame (2), and the brush roller (22) is in two sets corresponding to the first rotating rod (21).

4. The integrated online detection device for yarn linear density and evenness according to claim 3, characterized in that: The surface of the first rotating rod (21) is movably connected to the first transmission belt (24). The two sets of the first rotating rods (21) are movably connected to the two ends of the first transmission belt (24) through pulleys, and the toothed comb (25) is arranged in two sets and corresponds to the brush roller (22).

5. The integrated online detection device for yarn linear density and evenness according to claim 1, characterized in that: The vacuuming mechanism also includes a collection box (32), which is located on one side of the base (1), and one end of the vacuum pipe (31) is fixedly connected to the vacuum cover (3), the other end of the vacuum pipe (31) is fixedly connected to the collection box (32), and the vacuum pipe (31) is fixedly connected to the inside of the fixing frame (2).

6. The integrated online detection device for yarn linear density and evenness according to claim 5, characterized in that: A filter plate (33) is fixedly connected to the inside of the collection box (32), and an air inlet (34) is fixedly connected to the surface of the collection box (32). A fan (35) is movably arranged inside the air inlet (34).

7. The integrated online detection device for yarn linear density and evenness according to claim 6, characterized in that: A fixing rod (36) is fixedly connected to the inner wall of the air inlet (34), and a connecting frame (37) is fixedly connected to the end of the fixing rod (36) away from the air inlet (34). A second rotating rod (38) is movably connected to the inner side of the connecting frame (37), and a first conical tooth (39) is fixedly connected to the surface of the second rotating rod (38).

8. The integrated online detection device for yarn linear density and evenness according to claim 7, characterized in that: The first conical tooth (39) is movable inside the connecting frame (37), and the second rotating rod (38) is movably connected to the air inlet (34). The surface of the second rotating rod (38) is movably connected to the second transmission belt (310).

9. The integrated online detection device for yarn linear density and evenness according to claim 8, characterized in that: One end of the second transmission belt (310) is movably connected to the first rotating rod (21) via a pulley, and the other end of the second transmission belt (310) is movably connected to the second rotating rod (38) via a pulley. A third rotating rod (311) is fixedly connected to the surface of the fan (35), and a second conical tooth (312) is fixedly connected to the end of the third rotating rod (311) away from the fan (35). The third rotating rod (311) and the second conical tooth (312) are both movably inside the connecting frame (37).

10. The integrated online detection device for yarn linear density and evenness according to claim 1, characterized in that: The auxiliary mechanism also includes a fixing plate (4), which is fixedly connected to the inner surface of the fixing frame (2), and the connecting rod (41) is fixedly connected to the fixing plate (4). One end of the spring (42) is fixedly connected to the connecting rod (41), and the other end of the spring (42) is fixedly connected to the end of the movable rod (43) away from the comb (25). The movable rod (43) moves inside the connecting rod (41).

Images