A high-quality yarn elasticity detection device

Abstract

The present invention relates to the technical field of yarn detection, and specifically to a high-quality yarn elasticity detection device, which includes a plate frame. An L-shaped plate is slidably arranged on the plate frame in the vertical direction. A locking mechanism for clamping the yarn is jointly arranged on the L-shaped plate and the plate frame, and a driving mechanism for moving the yarn is arranged on the plate frame. The present invention uses an upper clamping component to clamp the upper force application point of the yarn, and uses a left clamping member and a right clamping member to clamp the lower force application point of the yarn, so as to perform stretching detection on the yarn part between the upper clamping component, the left clamping member and the right clamping member. At the same time, the cooperation between the wavy cross-section on the left clamping member and the arc surface on the right clamping member increases the contact area of the lower part of the yarn on the basis of ensuring that the yarn can be vertically straightened, thereby increasing the stability of the left clamping member and the right clamping member in clamping the lower part of the yarn and ensuring the accuracy of the detection result.

Description

Technical Field

[0001] The present invention relates to the technical field of yarn detection, and specifically, it is a high-quality yarn elasticity detection device. Background Art

[0002] Yarn elasticity detection is an important test for evaluating the ability of yarn to return to its original state after being stretched by an external force. After stretching the yarn to a certain elongation rate and then removing the external force, the length of the yarn's recovery and its elongation length are recorded, and the elastic recovery rate of the yarn is obtained by the ratio of the two. The higher the elastic recovery rate, the better the elasticity of the yarn.

[0003] Currently, an electronic single yarn strength tester is mainly used to detect the elasticity of yarn. During the detection, the operator fixes the yarn on the upper and lower two clamps of the electronic single yarn strength tester, and then drives the yarn to elongate by moving the lower clamp downward. Then, the lower clamp is released to allow the yarn to naturally contract and recover, while recording the elongation and recovery amounts of the yarn.

[0004] However, when clamping the yarn, the yarn needs to be in a vertical state without external force. Since the yarn is very light, it is difficult to keep the yarn in a vertical state by relying solely on its own weight to fall. When using the method of manually pulling the yarn to make it vertical and clamping the yarn, it is difficult to control the force applied manually, which is likely to cause the yarn to elongate in advance before detection, thus affecting the accuracy of the detection results.

[0005] In addition, when the clamping structure of the existing detection device clamps the yarn, the clamping direction of the lower part of the yarn is relatively single, and the clamping contact area is small, resulting in weak clamping stability of the existing clamping structure for the yarn. The yarn is prone to sliding during the detection stretching, further affecting the accuracy of the detection results. Summary of the Invention

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a high-quality yarn elasticity detection device, including a plate frame, an L-shaped plate is slidably arranged vertically on the plate frame, a locking mechanism for clamping the yarn is jointly arranged on the L-shaped plate and the plate frame, and a driving mechanism for moving the yarn is arranged on the plate frame.

[0007] The locking mechanism includes an upper clamping component arranged at the upper part of the front side of the plate frame for clamping and locking the upper force-bearing point of the yarn. A first push plate is slidably arranged in the left and right direction at the left front part of the horizontal section of the L-shaped plate. A left clamping member is fixedly installed on the right side of the first push plate and in front of the horizontal section of the L-shaped plate. The left side of the left clamping member is cylindrical, and the right side has a wavy cross-section.

[0008] A second push plate is slidably arranged in the left - right direction at the front - right part of the horizontal section of the L - shaped plate. A right clamping member is fixedly installed on the front side of the second push plate. The right clamping member has a U - shaped structure. The left side surface of the vertical section of the right clamping member has an arc - shaped surface structure corresponding to and fitting with the wavy cross - section of the left clamping member. V - shaped grooves are vertically penetrated through both horizontal sections of the right clamping member.

[0009] A wire - clamping assembly is jointly arranged on the right clamping member and the left clamping member. The locking mechanism further includes an anti - slip assembly for locking the yarn at the lower part of the right clamping member.

[0010] The upper clamping assembly includes a fixed frame slidably arranged up and down at the upper part of the front side of the plate frame. Push springs are arranged between the upper and lower sides of the fixed frame and the plate frame respectively.

[0011] Preferably, a wire - clamping slot longitudinally arranged and vertically penetrated is formed on the fixed frame. The front end of the wire - clamping slot penetrates through the fixed frame, and the rear end of the wire - clamping slot is located at the central position of the fixed frame. Two symmetrically arranged upper clamping plates are slidably arranged left - right inside the fixed frame. A first bidirectional screw is rotatably arranged at the rear part of the fixed frame. The two threaded sections of the first bidirectional screw are respectively thread - connected to the corresponding upper clamping plates.

[0012] Preferably, the anti - slip assembly includes two symmetrically arranged connecting plates slidably arranged front - rear on the right side of the vertical section of the right clamping member. An L - shaped wire - clamping plate is slidably arranged up and down on the right side of the connecting plate. The horizontal section of the wire - clamping plate is located below the right clamping member. A tension spring is arranged between the connecting plate and the right clamping member. A third bidirectional screw is rotatably arranged at the rear part of the horizontal section of the L - shaped plate. The two threaded sections of the third bidirectional screw are respectively thread - connected to the first push plate and the second push plate.

[0013] Preferably, the anti - slip assembly further includes a pointed - head plate fixedly installed at the lower left part of the vertical section of the L - shaped plate. A chamfer is arranged at the position near the pointed - head plate on the right side of the vertical section of the wire - clamping plate.

[0014] Preferably, a moving plate is slidably arranged vertically on the front side of the vertical section of the right clamping member. A plug rod is fixedly installed at the rear - right part of the moving plate. The plug rod is slidably inserted and connected in the vertical sections of the two wire - clamping plates in the front - rear direction. A track groove is formed at the front - right part of the horizontal section of the L - shaped plate. The right side of the track groove is a horizontal section, and the left side of the track groove is an obliquely downward - sloping section. The rear end of the plug rod is slidably connected to the track groove.

[0015] Preferably, the wire - clamping assembly includes two symmetrically arranged left clamping sleeves slidably sleeved on the outside of the left clamping member in the front - rear direction. Two symmetrically arranged right clamping plates are slidably arranged on the arc - shaped surface on the left side of the vertical section of the right clamping member in the front - rear direction.

[0016] Preferably, a second bidirectional screw is rotatably arranged at the axial position of the left clamping member. The two threaded sections of the second bidirectional screw are respectively threadedly connected to the left clamping sleeves at corresponding positions. An insertion plate is fixedly installed on the right side surface of the left clamping sleeve, and a positioning groove for inserting the insertion plate is formed at the position corresponding to the insertion plate on the right clamping plate.

[0017] Preferably, two symmetrically arranged front and rear limit blocks are slidably arranged on the right clamping member in the left-right direction. The limit blocks are used to insert into the interior of the positioning groove to lock the initial position of the right clamping plate. A helical spring is arranged between the limit blocks and the inner wall of the right clamping member.

[0018] Preferably, the driving mechanism includes a lifting plate slidably arranged up and down on the plate frame. A regulating screw is rotatably arranged at the lower part of the transverse section of the L-shaped plate. The regulating screw is threadedly connected to the lifting plate. An electric push rod is fixedly installed on the plate frame, and the telescopic section of the electric push rod is fixedly connected to the lifting plate.

[0019] Preferably, a pointer is installed in the middle of the left side of the fixed frame, and an indicator board is fixedly installed at the upper part of the front side of the plate frame.

[0020] The beneficial effects of the present invention are as follows: First, the present invention uses the upper clamping assembly to clamp the upper force point of the yarn, and the left clamping member and the right clamping member to clamp the lower force point of the yarn, so as to stretch and detect the yarn part between the upper clamping assembly, the left clamping member and the right clamping member. At the same time, through the cooperation of the wavy cross section on the left clamping member and the arc surface on the right clamping member, while ensuring that the yarn can be vertically straightened, the contact area of the lower part of the yarn is increased, thereby increasing the clamping stability of the left clamping member and the right clamping member on the lower part of the yarn and ensuring the accuracy of the detection result.

[0021] Second, when the present invention uses the right clamping member to push the yarn to move to the left, the right clamping member can guide and push the yarn to its middle through the V-shaped groove on it. When the yarn is straightened, the left clamping member and the right clamping member push the lower force point of the yarn directly below the upper clamping assembly, so that the yarn between the upper clamping assembly, the left clamping member and the right clamping member is vertically arranged. Then, by moving the lifting plate, the left clamping member and the right clamping member no longer pull and straighten the yarn, preventing the yarn from stretching before the detection starts, and further ensuring the accuracy of the detection result.

[0022] Third, the present invention uses the wire clamping assembly to be able to pre-clamp the lower part of the yarn, so that the yarn is in a pre-straightened state and the lower part of the yarn is limited before the left clamping member and the right clamping member push and clamp the yarn. In addition, the wire clamping assembly is used to assist in clamping the yarn by clamping and fixing the lower part of the yarn to prevent the yarn from slipping off, further increasing the clamping stability of the yarn.

[0023] IV. The anti-slip component of the present invention can clamp the yarn in the front-back direction on the basis of the left and right clamping of the yarn by the left clamping member and the right clamping member, further increasing the stability of the clamping of the yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the drawings and embodiments.

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 is a front view of the plate frame, L-shaped plate, driving mechanism and upper clamping assembly of the present invention.

[0027] Figure 3 is a partial cross-sectional view of the fixed frame, upper clamping plate and first bidirectional screw of the present invention.

[0028] Figure 4 is a partial cross-sectional view of the L-shaped plate and the locking mechanism after removing the upper clamping assembly of the present invention.

[0029] Figure 5 is a partial structural schematic diagram of the L-shaped plate, right clamping member and anti-slip component of the present invention.

[0030] Figure 6 is a partial cross-sectional view of the L-shaped plate, wire clamping plate, pointed head plate, insertion rod and track groove of the present invention.

[0031] Figure 7 is a structural schematic diagram of the left clamping member, left clamping sleeve and insertion plate of the present invention.

[0032] Figure 8 is a partial cross-sectional view of the right clamping member, right clamping plate, positioning groove and limit block of the present invention.

[0033] In the figure: 1, plate frame; 2, L-shaped plate; 3, locking mechanism; 4, driving mechanism; 31, upper clamping assembly; 32, first push plate; 33, left clamping member; 34, second push plate; 35, right clamping member; 36, wire clamping assembly; 37, anti-slip component; 42, lifting plate; 43, adjusting screw; 44, electric push rod; 45, indicating plate; 47, pointer; 311, fixed frame; 312, wire clamping seam; 313, upper clamping plate; 314, first bidirectional screw; 361, left clamping sleeve; 362, right clamping plate; 363, second bidirectional screw; 364, insertion plate; 365, positioning groove; 366, limit block; 371, connecting plate; 372, wire clamping plate; 373, pointed head plate; 374, moving plate; 375, insertion rod; 376, track groove; 377, third bidirectional screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The embodiments of the present invention will be described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as a limitation of the present invention. For those without specific technical or conditions noted in the embodiments, they shall be carried out according to the technologies or conditions described in the literature in the field or according to the product specifications.

[0035] Referring to Figure 1 , a high-quality yarn elasticity detection device, including a plate frame 1, an L-shaped plate 2 is slidably arranged on the plate frame 1 in the vertical direction, a locking mechanism 3 for clamping the yarn is jointly arranged on the L-shaped plate 2 and the plate frame 1, and a driving mechanism 4 for moving the yarn is arranged on the plate frame 1.

[0036] When it is necessary to detect the yarn, first, the operator fixes the upper stress point of the yarn at the corresponding position of the locking mechanism 3, and then fixes the lower stress point of the yarn through the locking mechanism 3. At the same time, the yarn is adjusted to a vertical state under tension. Then, the yarn is adjusted from the straight state to the natural hanging state through the driving mechanism 4, so as to avoid the elongation of the yarn before detection. Then, the driving mechanism 4 drives the locking mechanism 3 to stretch the yarn. Then, the lower end of the yarn is loosened through the locking mechanism 3, so that the lower end of the yarn naturally shrinks and recovers, and the recovered length and the elongation length of the yarn are recorded, so as to judge the elasticity performance of the yarn.

[0037] Referring to Figure 1 , Figure 2 and Figure 3 , the locking mechanism 3 includes an upper clamping assembly 31 arranged on the upper part of the front side of the plate frame 1 for clamping and locking the upper stress point of the yarn. The upper clamping assembly 31 includes a fixed frame 311 slidably arranged up and down on the upper part of the front side of the plate frame 1. Push springs are arranged between the upper and lower sides of the fixed frame 311 and the plate frame 1. A clamping slot 312 arranged longitudinally and penetrating up and down is formed in the fixed frame 311. The front end of the clamping slot 312 penetrates through the fixed frame 311, and the rear end of the clamping slot 312 is located at the center position of the fixed frame 311. Two symmetrically arranged upper clamping plates 313 are slidably arranged left and right inside the fixed frame 311. A first bidirectional screw 314 is rotatably arranged at the rear part of the fixed frame 311. The two threaded sections of the first bidirectional screw 314 are respectively threadedly connected to the corresponding upper clamping plates 313.

[0038] When it is necessary to detect the yarn, the operator puts the upper part of the yarn into the clamping slot 312, so that the yarn abuts against the rear end of the clamping slot 312. Then, the operator manually rotates the first bidirectional screw 314, so that the first bidirectional screw 314 drives the two upper clamping plates 313 to approach each other synchronously, so that the upper clamping plates 313 clamp the yarn, and at the same time, the upper stress point of the upper clamping plates 313 is located at the center position of the fixed frame 311.

[0039] In this embodiment, a winding shaft located directly behind the wire clamping seam 312 can be provided on the upper end surface of the fixed frame 311. After the yarn is wound around the winding shaft for a corresponding number of turns, it is placed into the wire clamping seam 312, thereby improving the stability of the upper part of the yarn being clamped, and further increasing the clamping stability of the upper clamping plate 313 on the upper part of the yarn.

[0040] Referring to Figure 1 、 Figure 4 and Figure 5 In addition, the locking mechanism 3 further includes a second push plate 34 slidably arranged in the right front part of the transverse section of the L-shaped plate 2 in the left-right direction. A right clamping member 35 is fixedly installed on the front side of the second push plate 34. The right clamping member 35 has a U-shaped structure. The locking mechanism 3 further includes an anti-slip assembly 37 for locking the yarn at the lower part of the right clamping member 35. The anti-slip assembly 37 includes two connecting plates 371 arranged symmetrically in the front-rear direction and slidably arranged on the right side of the vertical section of the right clamping member 35. A clamping plate 372 in an L-shape is slidably arranged up and down on the right side of the connecting plate 371. The horizontal section of the clamping plate 372 is located below the right clamping member 35. A tension spring is arranged between the connecting plate 371 and the right clamping member 35.

[0041] Referring to Figure 4 、 Figure 5 and Figure 6 In addition, the anti-slip assembly 37 further includes a pointed plate 373 fixedly installed on the lower left part of the longitudinal section of the L-shaped plate 2. A chamfer is provided at a position on the right side of the vertical section of the clamping plate 372 close to the pointed plate 373.

[0042] In the initial state, the right clamping member 35 drives the chamfers on the two clamping plates 372 to abut against the inclined surfaces of the pointed plate 373 through the connecting plate 371, so that the pointed plate 373 pushes the corresponding clamping plate 372 in the front and rear directions respectively, thereby causing the two clamping plates 372 to move away from each other.

[0043] Referring to Figure 1 、 Figure 4 、 Figure 7 and Figure 8 In addition, the locking mechanism 3 further includes a first push plate 32 slidably arranged in the left front part of the transverse section of the L-shaped plate 2 in the left-right direction. A left clamping member 33 is fixedly installed on the right side of the first push plate 32 and in front of the transverse section of the L-shaped plate 2. The left side of the left clamping member 33 has a cylindrical structure, and the right side of the left clamping member 33 has a wavy cross-section. The left side surface of the vertical section of the right clamping member 35 has an arc-shaped surface structure corresponding to and fitting with the wavy cross-section of the left clamping member 33. V-shaped grooves are vertically penetrated through both horizontal sections of the right clamping member 35.

[0044] Referring to Figure 3 and Figure 4, a third bidirectional screw 377 is rotatably arranged at the rear part of the transverse section of the L-shaped plate 2, and the two threaded sections of the third bidirectional screw 377 are respectively threadedly connected to the first push plate 32 and the second push plate 34.

[0045] When the upper part of the yarn is clamped on the upper clamping plate 313, the operator manually strokes the yarn downward and makes the yarn pass through the V-shaped groove on the right clamping member 35, and makes the lower part of the yarn located between the two wire clamping plates 372. By setting the V-shaped groove, the yarn can be located in the middle of the right clamping member 35.

[0046] Subsequently, the operator manually rotates the third bidirectional screw 377, so that the third bidirectional screw 377 drives the first push plate 32 and the second push plate 34 to approach each other. The second push plate 34 drives the two wire clamping plates 372 to move synchronously to the left to the left side of the pointed head plate 373 through the right clamping member 35, so that the pointed head plate 373 no longer pushes the two wire clamping plates 372. The tension spring pulls the two connecting plates 371 to approach each other through its own resilience, and then the connecting plate 371 drives the wire clamping plate 372 to clamp and lock the lower part of the yarn. And at this time, due to manually stroking the yarn, the yarn is in a pre-straightened state when it is clamped on the wire clamping plate 372.

[0047] Refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 6 , a moving plate 374 is slidably arranged along the vertical direction on the front side of the vertical section of the right clamping member 35. A plug rod 375 is fixedly installed on the right rear part of the moving plate 374. The plug rod 375 is slidably inserted and connected to the vertical sections of the two wire clamping plates 372 along the front-rear direction. A track groove 376 is opened on the front right part of the transverse section of the L-shaped plate 2. The right side of the track groove 376 is a horizontal section, and the left side of the track groove 376 is an obliquely downward inclined section. The rear end of the plug rod 375 is slidably connected to the track groove 376.

[0048] During the process of the right clamping member 35 moving to the left, it drives the moving plate 374 to move synchronously to the left. The moving plate 374 drives the plug rod 375 to move along the track groove 376. The plug rod 375 moves along the horizontal section of the track groove 376, and the height of the plug rod 375 remains unchanged. After the pointed head plate 373 is separated from the two wire clamping plates 372, the tension spring pulls the two connecting plates 371 to approach each other through its own resilience, and then the connecting plate 371 drives the wire clamping plate 372 to clamp and lock the lower part of the yarn. When the plug rod 375 moves to the junction of the horizontal section and the oblique section of the track groove 376, when the right clamping member 35 continues to move to the left, the plug rod 375 will move downward along the oblique section of the track groove 376.

[0049] The inserting rod 375 drives the two wire clamping plates 372 to move downward synchronously, causing the wire clamping plates 372 to pull the yarn downward. Since when the wire clamping plates 372 clamp the yarn, the position where the wire clamping plates 372 clamp the yarn is located on the right side directly below the wire clamping seam 312, the yarn is in a state of gradually tilting to the right from top to bottom. When the wire clamping plates 372 drive the yarn to move leftward, the yarn will gradually change from a tilted state to a vertical state, and at the same time, the pre-straightened yarn will gradually change to a slack state. However, at this time, when the wire clamping plates 372 move leftward, they also drive the yarn to move downward, so the yarn can always be kept in a pre-straightened state.

[0050] The operator continues to rotate the third bidirectional screw 377, causing the right clamping member 35 to abut against the left clamping member 33. At this time, the arc surface of the right clamping member 35 is fitted with the wavy cross-section of the left clamping member 33. At the same time, the left clamping member 33 is inserted into the interior of the right clamping member 35, so that the left clamping member 33 and the right clamping member 35 are both located directly below the wire clamping seam 312. The arc surface of the right clamping member 35 and the wavy cross-section of the left clamping member 33 clamp the yarn, and push the yarn to fit on the wavy cross-section of the left clamping member 33, thereby increasing the clamping area of the yarn and improving the stability of the yarn clamping.

[0051] Since the lower part of the yarn is clamped and fixed by the wire clamping plates 372, when the yarn fits on the wavy cross-section of the left clamping member 33, the yarn to be detected between the left clamping member 33, the right clamping member 35 and the fixed frame 311 needs to be straightened to avoid the phenomenon that the yarn in the detection section is all bent. And since the left clamping member 33 and the right clamping member 35 are both located directly below the wire clamping seam 312, the lower force application point of the straightened yarn is directly below its upper force application point, so that the yarn in a straightened state is in a vertical state.

[0052] Refer to Figure 1 、 Figure 4 、 Figure 7 and Figure 8 As shown in

[0053] Continue to refer to Figure 4 、 Figure 7 and Figure 8, the axis position of the left clamping member 33 is rotatably provided with a second bidirectional screw 363. The two threaded sections of the second bidirectional screw 363 are respectively threadedly connected to the left clamping sleeves 361 at corresponding positions. An insertion plate 364 is fixedly installed on the right side surface of the left clamping sleeve 361. A positioning groove 365 for the insertion plate 364 to insert is provided at the position corresponding to the insertion plate 364 on the right clamping plate 362.

[0054] Refer to Figure 8 , two symmetrically arranged front and rear limit blocks 366 are slidably arranged on the right clamping member 35 in the left-right direction. The limit blocks 366 are used to insert into the inside of the positioning groove 365 to lock the initial position of the right clamping plate 362. A helical spring is arranged between the limit blocks 366 and the inner wall of the right clamping member 35.

[0055] In the initial state, the helical spring pushes the limit blocks 366 to insert into the inside of the positioning groove 365 through its own elastic force, so as to lock the right clamping plate 362 and the right clamping member 35 into a whole, preventing the position change of the right clamping plate 362. When the left clamping member 33 and the right clamping member 35 are fitted together, the left clamping member 33 drives the left clamping sleeve 361 to fit with the right clamping plate 362, so that the left clamping sleeve 361 drives the insertion plate 364 to insert into the inside of the positioning groove 365, so that the left clamping sleeve 361 and the right clamping plate 362 are connected into a whole.

[0056] At the same time, the insertion plate 364 pushes the limit blocks 366 to withdraw from the inside of the positioning groove 365, so that the right clamping plate 362 can move synchronously with the left clamping sleeve 361 at the corresponding position. Then the operator manually rotates the second bidirectional screw 363. The second bidirectional screw 363 drives the two left clamping sleeves 361 to approach each other. The left clamping sleeve 361 drives the right clamping plate 362 to move synchronously, so that the left clamping sleeve 361 and the right clamping plate 362 clamp the yarn in the front-rear direction through their corresponding side surfaces, thereby increasing the clamping direction and further improving the clamping stability.

[0057] Refer to Figure 1 and Figure 2 , the driving mechanism 4 includes a lifting plate 42 slidably arranged up and down on the plate frame 1. The lower part of the horizontal section of the L-shaped plate 2 is rotatably provided with an adjusting screw 43. The adjusting screw 43 is threadedly connected to the lifting plate 42. An electric push rod 44 is fixedly installed on the plate frame 1. The telescopic section of the electric push rod 44 is fixedly connected to the bottom of the lifting plate 42.

[0058] Continue to refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , a pointer 47 is installed in the middle of the left side of the fixed frame 311, and an indicating plate 45 is fixedly installed on the upper part of the front side of the plate frame 1.

[0059] In the initial state, the pushing springs on the upper and lower sides stabilize the position of the fixed frame 311, causing the fixed frame 311 to drive the pointer 47 to point to the position on the indicator board 45. When the yarn is straightened, the yarn pulls the fixed frame 311 downward and drives the pointer 47 to move to the lower side of the indicator board 45, and compresses the lower pushing spring.

[0060] Subsequently, the operator manually rotates the adjusting screw 43, causing the adjusting screw 43 to push the L-shaped plate 2 upward, so that the lower pushing spring drives the yarn to move upward through the fixed frame 311. When the fixed frame 311 drives the pointer 47 to point to the position on the indicator board 45 again, stop rotating the adjusting screw 43. At this time, the pushing springs on the upper and lower sides are in a natural elongation state, making the yarn keep vertical and free from external forces, avoiding the elongation of the yarn before detection.

[0061] After that, the telescopic section of the electric push rod 44 contracts to drive the lifting plate 42 to move downward. The lifting plate 42 pulls the L-shaped plate 2 downward through the adjusting screw 43, so that the L-shaped plate 2 stretches the yarn through the left clamping piece 33 and the right clamping piece 35, and at the same time records the elongation length of the yarn. Subsequently, the operator manually reverses the third double-headed screw 377 and manually pulls the two wire clamping plates 372 away from each other, so that the lower part of the yarn is no longer clamped, so that the yarn automatically resumes contraction, and records the recovery length of the yarn. According to the ratio of the recovery length to the elongation length of the yarn, the elastic recovery rate of the yarn is obtained. If the elastic recovery rate is within the standard range, it indicates that the elasticity of the yarn is qualified, otherwise it is unqualified.

[0062] And when the lifting plate 42 pulls the L-shaped plate 2 downward, the pulling force on the yarn can be gradually increased by the contraction of the lower pushing spring, preventing the sudden breaking of the yarn caused by the sudden pulling force applied to the yarn.

[0063] Refer to Figures 1-8 , when detecting the elasticity of the yarn, the present invention further includes the following steps: First step, the operator puts the upper part of the yarn into the clamping slot 312, manually rotates the first double-headed screw 314 to drive the two upper clamping plates 313 to clamp the yarn, and at the same time makes the force application point on the upper part of the upper clamping plate 313 located at the center position of the fixed frame 311.

[0064] Second step, the operator manually strokes the yarn downward and makes the yarn pass through the V-shaped groove on the right clamping piece 35, and makes the lower part of the yarn located between the two wire clamping plates 372. By setting the V-shaped groove, the yarn can be located in the middle of the right clamping piece 35.

[0065] In the third step, the operator then manually rotates the third bidirectional screw 377, causing the third bidirectional screw 377 to drive the two wire clamping plates 372 to move synchronously to the left until they reach the left side of the pointed plate 373. As a result, the tension spring pulls the two wire clamping plates 372 through its own elastic force to clamp and lock the lower part of the yarn. Subsequently, the wire clamping plates 372 drive the yarn to move to the left in a pre-straightened state.

[0066] In the fourth step, the right clamping member 35 abuts against the left clamping member 33, causing the arc surface of the right clamping member 35 and the wavy cross-section of the left clamping member 33 to clamp the yarn, and pushing the yarn to fit against the wavy cross-section of the left clamping member 33, and causing the yarn to be straightened in a vertical state.

[0067] In the fifth step, the operator then manually rotates the adjusting screw 43, causing the adjusting screw 43 to push the L-shaped plate 2 upward, so that the lower pushing spring drives the yarn to move upward through the fixed frame 311. When the fixed frame 311 drives the pointer 47 to point to the position of the indicator board 45 again, stop rotating the adjusting screw 43. At this time, the upper and lower pushing springs maintain a natural elongation state, causing the yarn to remain vertical and free from external forces.

[0068] In the sixth step, the telescopic section of the retractable electric push rod 44 contracts to drive the lifting plate 42 to move downward. The lifting plate 42 pulls the L-shaped plate 2 downward through the adjusting screw 43, causing the L-shaped plate 2 to stretch the yarn through the left clamping member 33 and the right clamping member 35. At the same time, record the elongation length of the yarn. Subsequently, the operator manually reverses the third bidirectional screw 377 and manually pulls the two wire clamping plates 372 away from each other, so that the lower part of the yarn is no longer clamped, causing the yarn to recover its contraction autonomously, and record the recovery length of the yarn. According to the ratio of the yarn recovery length to the elongation length, the elastic recovery rate of the yarn is obtained. If the elastic recovery rate is within the standard range, it indicates that the elasticity of the yarn is qualified; otherwise, it is unqualified.

[0069] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention, and still be covered by the protection scope of the present invention.

Claims

1. A high-quality yarn elasticity detection device, including a plate frame, characterized in that, An L-shaped plate is slidably arranged vertically on the plate frame. A locking mechanism for clamping the yarn is jointly arranged on the L-shaped plate and the plate frame. A driving mechanism for moving the yarn is arranged on the plate frame. The driving mechanism includes a lifting plate slidably arranged up and down on the plate frame. A regulating screw rod threadedly connected to the lifting plate is rotatably arranged at the lower part of the horizontal section of the L-shaped plate. The locking mechanism includes an upper clamping assembly arranged at the upper part of the front side of the plate frame for clamping and locking the upper stress point of the yarn. A first push plate is slidably arranged left and right along the front side left part of the horizontal section of the L-shaped plate. A left clamping member is fixedly installed on the right side of the first push plate and in front of the horizontal section of the L-shaped plate. The left side of the left clamping member is cylindrical in structure, and the right side has a wavy cross section. A second push plate is slidably arranged left and right along the front side right part of the horizontal section of the L-shaped plate. A right clamping member in a C-shaped structure is fixedly installed on the front side of the second push plate. The left side surface of the vertical section of the right clamping member has an arc surface structure corresponding to and fitting with the wavy cross section of the left clamping member. V-shaped grooves are vertically penetrated through both horizontal sections of the right clamping member. A wire clamping assembly is jointly arranged on the right clamping member and the left clamping member. The locking mechanism further includes an anti-slip assembly for locking the yarn at the lower part of the right clamping member. The upper clamping assembly includes a fixed frame slidably arranged up and down at the upper part of the front side of the plate frame. Push springs are arranged between the upper and lower sides of the fixed frame and the plate frame. A pointer is installed in the middle of the left side of the fixed frame. An indicating plate is fixedly installed at the upper part of the front side of the plate frame. The anti-slip assembly includes a third bidirectional screw rod and a pointed head plate fixedly installed at the lower left part of the vertical section of the L-shaped plate. A chamfer is provided at a position close to the pointed head plate on the right side of the vertical section of the wire clamping plate. Rotating the third bidirectional screw rod makes the right clamping member and the left clamping member abut against each other to clamp the yarn. A moving plate is slidably arranged vertically on the front side of the vertical section of the right clamping member. A plug rod is fixedly installed at the lower right part of the rear side of the moving plate. The plug rod is slidably inserted and connected in the vertical sections of the two wire clamping plates in the front and rear directions. A track groove is provided at the front side right part of the horizontal section of the L-shaped plate. The right side of the track groove is a horizontal section, and the left side is an obliquely downward inclined section. The rear end of the plug rod is slidably connected to the track groove. The wire clamping assembly includes two left clamping sleeves symmetrically arranged front and rear and slidably sleeved on the outside of the left clamping member. Two right clamping plates symmetrically arranged front and rear are slidably arranged in the front and rear directions on the arc surface on the left side of the vertical section of the right clamping member. A second bidirectional screw rod is rotatably arranged at the axis position of the left clamping member. Rotating the second bidirectional screw rod makes the left clamping sleeves and the right clamping plates clamp the yarn in the front and rear directions.

2. The high-quality yarn elasticity detection device according to claim 1, characterized in that, A wire clamping slot vertically arranged and penetrating up and down is provided on the fixed frame. The front end of the wire clamping slot penetrates through the fixed frame, and the rear end of the wire clamping slot is located at the center position of the fixed frame. Two upper clamping plates symmetrically arranged left and right are slidably arranged left and right inside the fixed frame. A first bidirectional screw rod is rotatably arranged at the rear part of the fixed frame. The two threaded sections of the first bidirectional screw rod are respectively threadedly connected to the upper clamping plates at the corresponding positions.

3. The high-quality yarn elasticity detection device according to claim 1, characterized in that, The anti-slip assembly further includes two connecting plates that are symmetrically arranged front and rear and are slidably arranged front and rear on the right side of the vertical section of the right clamping member. An L-shaped wire clamping plate is slidably arranged up and down on the right side of the connecting plate. The horizontal section of the wire clamping plate is located below the right clamping member. A tension spring is arranged between the connecting plate and the right clamping member. A third bidirectional screw is rotatably arranged at the rear of the horizontal section of the L-shaped plate. Two threaded sections of the third bidirectional screw are respectively threadedly connected to the first push plate and the second push plate.

4. A high-quality yarn elasticity detection device according to claim 1, characterized in that, Two threaded sections of the second bidirectional screw are respectively threadedly connected to the left clamping sleeves at corresponding positions. An insertion plate is fixedly installed on the right side surface of the left clamping sleeve. A positioning groove for inserting the insertion plate is formed at the corresponding position of the right clamping plate.

5. The high-quality yarn elasticity testing device according to claim 1, characterized in that: Two limiting blocks that are symmetrically arranged front and rear are slidably arranged on the right clamping member in the left-right direction. The limiting blocks are used to insert into the inside of the positioning groove to lock the initial position of the right clamping plate. A helical spring is arranged between the limiting block and the inner wall of the right clamping member.

6. The high-quality yarn elasticity detection device according to claim 1, characterized in that, An electric push rod is fixedly installed on the plate frame. The telescopic section of the electric push rod is fixedly connected to the lifting plate.

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