Detection device for testing roundness of polyester filament yarn

Abstract

The invention relates to the technical field of roundness detection of polyester filaments, and discloses a detection device for testing roundness of polyester filaments, which comprises a support plate, the bottom of the support plate is fixedly connected with support legs, the inner wall of the support plate is fixedly connected with a limiting frame, and the top of the inner wall of the limiting frame is fixedly connected with a detection device. A conveying frame is fixedly connected to the end of the detecting device, a detecting ring is fixedly connected to the bottom of the conveying frame, the stabilizing component comprises an electric push rod, the bottom of the electric push rod is fixedly connected with the top of the supporting plate, and a connecting rod is fixedly connected to the top of the electric push rod. Polyester filaments are extruded and limited through the extrusion part, the tensile force of the polyester filaments during conveying is improved, meanwhile, the limiting part is arranged on the surface of the extrusion part and can limit the polyester filaments, and the situation that the polyester filaments slide and are staggered during conveying is avoided; and the stability of the extrusion part for extruding the polyester filament yarns is improved.

Description

Technical Field

[0001] The invention relates to the technical field of roundness detection of polyester filaments, in particular to a detection device for testing the roundness of polyester filaments. Background Art

[0002] Polyester filament is made from polyester. Polyester is an important type of synthetic fiber and is the trade name for polyester fiber in my country. It is made from purified terephthalic acid or dimethyl terephthalate and ethylene glycol, through esterification or transesterification and polycondensation to produce a fiber-forming polymer - polyethylene terephthalate. The fiber is made through spinning and post-processing. The so-called polyester filament is a thread with a length of more than one kilometer, and the filament is wound into a ball;

[0003] After the polyester filament is produced, it needs to be tested for its roundness. However, the polyester filament itself has a certain toughness, and the polyester filament needs to be moved inside the detection device through transmission so that the detection device can detect the roundness of the entire polyester filament. The current transmission method generally uses a roller to squeeze and limit the polyester filament, but the polyester filament is prone to sliding on the surface of the roller and tilting. The tilted polyester filament is easily misaligned with the polyester filament and caused to get stuck. Summary of the Invention

[0004] The object of the present invention is to provide a detection device for testing the roundness of polyester filaments to solve the problems raised in the above background technology.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a detection device for testing the roundness of polyester filaments, comprising a support plate, a support leg fixedly connected to the bottom of the support plate, a limit frame fixedly connected to the inner wall of the support plate, a detection device fixedly connected to the top of the inner wall of the limit frame, an end of the detection device fixedly connected to a transmission frame, and a detection ring fixedly connected to the bottom of the transmission frame. The device also includes:

[0007] A stabilizing component, the stabilizing component comprising an electric push rod, the bottom of the electric push rod is fixedly connected to the top of the support plate, the top of the electric push rod is fixedly connected to a connecting rod, and the end of the connecting rod is hinged to an inclined plate;

[0008] An extrusion component, the extrusion component includes a positioning frame, a positioning groove is opened on the surface of the positioning frame, a shaft is fixedly connected to the surface of the positioning frame, and a rotating wheel is rotatably connected to the surface of the shaft;

[0009] The limiting component includes a center frame, the inner wall of the center frame is fixedly connected to the surface of the shaft, the surface of the center frame is fixedly connected to a slide plate, and the inner wall of the slide plate is rotatably connected to a circular groove ring.

[0010] Furthermore, the stabilizing component includes a bifurcated frame, the surface of the bifurcated frame is hinged to the bottom of the inclined plate, the end of the bifurcated frame away from the inclined plate is fixedly connected to the pressure plate, the surface of the inclined plate is fixedly connected to a round rod, the surface of the round rod is sleeved with a semicircular spring piece, and the center of the semicircular spring piece is fixedly connected to the stabilizing plate;

[0011] The top of the stabilizing plate is fixedly connected with a groove top frame, and the top of the supporting plate is fixedly connected with a fixing plate.

[0012] Furthermore, two inclined plates are provided at the end of the connecting rod, and the two inclined plates are symmetrically arranged with the connecting rod as the center, and the ends of the two inclined plates away from the connecting rod are arranged away from each other.

[0013] Furthermore, the inner wall of the bifurcation frame is slidably connected to the surface of the fixed plate, the number of the detection rings is two, the two detection rings are symmetrically arranged with the groove top frame as the center, and the round rod is located at one end of the inclined plate close to the bifurcation frame.

[0014] Furthermore, the extrusion component includes a mounting rod, the mounting rod is fixedly connected to the surface of the rotating wheel, a semicircular plate is fixedly connected to the surface of the mounting rod, an end of the semicircular plate away from the mounting rod is fixedly connected to a roller frame, and an inner wall of the roller frame is rotatably connected to a groove wheel;

[0015] The surface of the rotating wheel is fixedly connected with a groove frame, the inner wall of the groove frame is fixedly connected with a force rod, the surface of the force rod is fixedly connected with an elastic sheet, and one end of the elastic sheet away from the force rod is fixedly connected to the surface of the positioning frame.

[0016] Furthermore, two rotating wheels are provided on the surface of the shaft rod, and the two rotating wheels are symmetrically arranged with the shaft rod as the center. The semicircular plate extends to the top of the round rod away from one end of the mounting rod, and the end of the force-bearing rod extends to the outer end of the groove frame. The surface of the force-bearing rod contacts the surface of the pressure plate, and the bottom of the groove wheel extends to the bottom outer end of the roller frame.

[0017] Furthermore, the limiting component includes a bent plate, the end of the bent plate is hinged to the surface of the center frame, the end of the bent plate away from the center frame is fixedly connected to a circular arc plate, the inner wall of the circular arc plate is rotatably connected to a contact rod, the inner wall of the circular arc plate is fixedly connected to a rubber block, the inner wall of the shaft rod is fixedly connected to a rectangular frame, the surface of the rectangular frame is fixedly connected to an elastic sheet, the end of the elastic sheet away from the rectangular frame is fixedly connected to the surface of the bent plate, the surface of the rectangular frame is fixedly connected to an arc rubber plate, the surface of the rotating wheel is fixedly connected to a connecting rod, and the surface of the connecting rod is rotatably connected to a circular ring groove rod.

[0018] Furthermore, the center frame is located at the center of the surface of the shaft, the rectangular frame is symmetrically arranged with the shaft as the center, the arc rubber plate is located at the center of the surface of the rectangular frame, and the arc rubber plate is located inside the circular groove ring.

[0019] Furthermore, the inner wall of the arc plate contacts the surface of the annular groove rod, the rubber block is located inside the annular groove rod, and two bent plates are provided on the surface of the center frame. The two bent plates are symmetrically arranged with the center frame as the center, and are oppositely arranged at the end away from the center frame.

[0020] The present invention has the following beneficial effects:

[0021] The present invention uses an extrusion component to extrude and limit the polyester filaments, thereby increasing the tension of the polyester filaments during transmission. At the same time, a limiting component is provided on the surface of the extrusion component. The limiting component can limit the polyester filaments, thereby preventing the polyester filaments from sliding and dislocating during transmission, thereby improving the stability of the extrusion component when extruding the polyester filaments. The polyester filaments pass through the interior of the detection ring, and the detection ring can transmit the detected data to the detection device for separation, thereby detecting and processing the roundness of the polyester filaments. When the stabilizing component starts working, it will support and limit the polyester filaments below the detection device, thereby further improving the stability of the polyester filaments during roundness detection.

[0022] After the polyester filament passes through the detection ring of the present invention, the electric push rod is started to drive the connecting rod to move downward. When the connecting rod moves, it pushes the bifurcation frame to slide on the surface of the fixed plate through the inclined plate and expands. When the inclined plate expands, it pushes the semicircular spring piece through the round rod to deform. At this time, the semicircular spring piece pushes the stabilizing plate to move upward. When the stabilizing plate moves, it pushes the groove top frame to contact with the polyester filament and squeezes the polyester filament, so that the groove top frame is used to limit the polyester filament, avoiding the polyester filament from being tilted and misaligned during roundness detection.

[0023] The bifurcation frame of the present invention pushes the pressure plate to move when it moves, and the pressure plate contacts the surface of the force-bearing rod when it moves, and pushes the rotating wheel to rotate on the surface of the shaft rod through the force-bearing rod. When the rotating wheel rotates, it pushes the end of the semicircular plate to move downward through the mounting rod. When the semicircular plate moves, it pushes the groove wheel to contact the surface of the polyester filament through the roller frame. At this time, the polyester filament will contact the inner wall of the groove wheel. The groove wheel is used to limit the polyester filament to avoid sliding of the polyester filament during transmission, thereby further improving the stability of the polyester filament during roundness detection.

[0024] After the surface of the polyester filament contacts the inner wall of the circular groove rod, the rotating wheel will push the circular groove rod through the connecting rod to extrude and limit the polyester filament when it rotates. The circular groove rod will squeeze the arc plate to move when it rotates. The arc plate will deform by squeezing the elastic sheet through the bent plate when it moves. The arc plate can use the elasticity of the elastic sheet to push the rubber block to be stuck inside the circular groove rod, thereby preventing the polyester filament from falling off during transmission. At this time, the polyester filament will be located below the circular groove ring and in contact with the inner wall of the circular groove ring, further improving the stability of the polyester filament during transmission.

[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the transmission frame structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the overall structure of the stabilizing component of the present invention;

[0030] Figure 4 This is another structural schematic diagram of the stabilizing component of the present invention;

[0031] Figure 5 This is a schematic diagram of the overall structure of the extruded component of the present invention;

[0032] Figure 6 For the present invention Figure 5 A magnified schematic diagram of part A in FIG;

[0033] Figure 7 This is a schematic diagram of the overall structure of the limiting component of the present invention;

[0034] Figure 8 This is another structural diagram of the limiting component of the present invention.

[0035] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0036] In the figure: 1, support plate; 2, limit frame; 3, detection device; 4, transmission frame; 5, detection ring; 6, support leg; 7, stabilizing component; 8, extrusion component; 9, limit component; 10, electric push rod; 11, connecting rod; 12, round rod; 13, fixing plate; 14, pressure plate; 15, stabilizing plate; 16, fork frame; 17, semicircular spring; 18, inclined plate; 19, groove top frame; 20, positioning frame; 21, mounting rod; 2 2. Force-bearing rod; 23. Semicircular plate; 24. Rotating wheel; 25. Shaft; 26. Positioning groove; 27. Groove frame; 28. Spring piece; 29. Groove wheel; 30. Roller frame; 40. Connecting rod; 41. Ring groove rod; 42. Center frame; 43. Arc rubber plate; 44. Contact rod; 45. Rubber block; 46. Elastic sheet; 47. Bend plate; 48. Slide plate; 49. Rectangular frame; 50. Arc plate; 51. Groove ring. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See also Figures 1-8 As shown, the present invention is a detection device for testing the roundness of polyester filaments, comprising a support plate 1, the bottom of the support plate 1 is fixedly connected to a support leg 6, the inner wall of the support plate 1 is fixedly connected to a limiting frame 2, the top of the inner wall of the limiting frame 2 is fixedly connected to a detection device 3, and the end of the detection device 3 is fixedly connected to a transmission frame 4. The present invention uses an extrusion component 8 to extrude and limit the polyester filaments, thereby increasing the tension of the polyester filaments during transmission. At the same time, a limiting component 9 is provided on the surface of the extrusion component 8, and the limiting component 9 can limit the polyester filaments to avoid sliding and dislocation of the polyester filaments during transmission, thereby improving the stability of the extrusion component 8 when extruding the polyester filaments. The polyester filaments pass through the interior of the detection ring 5, and the detection ring 5 can transmit the detected data to the detection device 3 for separation, thereby detecting and processing the roundness of the polyester filaments. When the stabilizing component 7 starts working, it will support and limit the polyester filaments below the detection device 3, thereby further improving the stability of the polyester filaments during roundness detection. The bottom of the transmission frame 4 is fixedly connected to the detection ring 5, and further includes:

[0039] The stabilizing component 7 includes an electric push rod 10. The bottom of the electric push rod 10 is fixedly connected to the top of the support plate 1. The top of the electric push rod 10 is fixedly connected to a connecting rod 11. The end of the connecting rod 11 is hinged with an inclined plate 18.

[0040] The extrusion component 8 includes a positioning frame 20, a positioning groove 26 is formed on the surface of the positioning frame 20, a shaft 25 is fixedly connected to the surface of the positioning frame 20, and a rotating wheel 24 is rotatably connected to the surface of the shaft 25;

[0041] The limiting component 9 includes a center frame 42 , the inner wall of the center frame 42 is fixedly connected to the surface of the shaft 25 , a slide plate 48 is fixedly connected to the surface of the center frame 42 , and a circular groove ring 51 is rotatably connected to the inner wall of the slide plate 48 .

[0042] The stabilizing member 7 includes a forked frame 16, the surface of the forked frame 16 is hinged to the bottom of the inclined plate 18, the end of the forked frame 16 away from the inclined plate 18 is fixedly connected to the pressure plate 14, the surface of the inclined plate 18 is fixedly connected to the round rod 12, the surface of the round rod 12 is sleeved with a semicircular spring piece 17, and the center of the semicircular spring piece 17 is fixedly connected to the stabilizing plate 15;

[0043] The top of the stabilizing plate 15 is fixedly connected to the groove top frame 19 , and the top of the supporting plate 1 is fixedly connected to the fixing plate 13 .

[0044] Two inclined plates 18 are provided at the end of the connecting rod 11. After the polyester filament of the present invention passes through the detection ring 5, the electric push rod 10 is started to drive the connecting rod 11 to move downward. When the connecting rod 11 moves, it pushes the fork frame 16 to slide on the surface of the fixed plate 13 through the inclined plate 18 and expands. When expanding, the inclined plate 18 pushes the semicircular spring piece 17 through the round rod 12 to deform. At this time, the semicircular spring piece 17 will push the stabilizing plate 15 to move upward. When moving, the stabilizing plate 15 pushes the groove top frame 19 to contact the polyester filament and squeeze the polyester filament, thereby utilizing the groove top frame 19 to limit the polyester filament to avoid tilting and misalignment of the polyester filament during roundness detection. The two inclined plates 18 are symmetrically arranged with the connecting rod 11 as the center, and the two inclined plates 18 are arranged away from each other at one end away from the connecting rod 11.

[0045] The inner wall of the fork frame 16 is slidably connected to the surface of the fixed plate 13. There are two detection rings 5, which are symmetrically arranged with the groove top frame 19 as the center. The round rod 12 is located at one end of the inclined plate 18 close to the fork frame 16.

[0046] The extrusion component 8 includes a mounting rod 21, which is fixedly connected to the surface of the rotating wheel 24. A semicircular plate 23 is fixedly connected to the surface of the mounting rod 21. The end of the semicircular plate 23 away from the mounting rod 21 is fixedly connected to a roller frame 30. The inner wall of the roller frame 30 is rotatably connected to a groove wheel 29.

[0047] The surface of the rotating wheel 24 is fixedly connected to a groove frame 27, the inner wall of the groove frame 27 is fixedly connected to the load-bearing rod 22, the surface of the load-bearing rod 22 is fixedly connected to a spring piece 28, and the end of the spring piece 28 away from the load-bearing rod 22 is fixedly connected to the surface of the positioning frame 20.

[0048] The surface of the shaft 25 is provided with two wheels 24, and the two wheels 24 are symmetrically arranged with the shaft 25 as the center. The fork frame 16 of the present invention pushes the pressure plate 14 to move when it moves. The pressure plate 14 contacts the surface of the force-bearing rod 22 when it moves, and pushes the wheel 24 to rotate on the surface of the shaft 25 through the force-bearing rod 22. When the wheel 24 rotates, it pushes the end of the semicircular plate 23 downward through the mounting rod 21. When the semicircular plate 23 moves, it pushes the groove wheel 29 and the surface of the polyester filament through the roller frame 30. Contact, at this time the polyester filament will contact the inner wall of the groove wheel 29, and the groove wheel 29 is used to limit the polyester filament to avoid sliding of the polyester filament during transmission, further improving the stability of the polyester filament during roundness detection, the semicircular plate 23 extends from one end of the mounting rod 21 to the top of the round rod 12, the end of the force-bearing rod 22 extends to the outer end of the groove frame 27, the surface of the force-bearing rod 22 contacts the surface of the pressure plate 14, and the bottom of the groove wheel 29 extends to the bottom outer end of the roller frame 30.

[0049] The limiting component 9 includes a bent plate 47, the end of the bent plate 47 is hinged to the surface of the center frame 42, the end of the bent plate 47 away from the center frame 42 is fixedly connected to the arc plate 50, the inner wall of the arc plate 50 is rotatably connected to the contact rod 44, the inner wall of the arc plate 50 is fixedly connected to the rubber block 45, the inner wall of the shaft 25 is fixedly connected to the rectangular frame 49, the surface of the rectangular frame 49 is fixedly connected to the elastic sheet 46, the end of the elastic sheet 46 away from the rectangular frame 49 is fixedly connected to the surface of the bent plate 47, the surface of the rectangular frame 49 is fixedly connected to the arc rubber plate 43, the surface of the rotating wheel 24 is fixedly connected to the connecting rod 40, and the surface of the connecting rod 40 is rotatably connected to the annular groove rod 41.

[0050] The center frame 42 is located at the center of the shaft 25 . The rectangular frame 49 is symmetrically arranged around the shaft 25 . The arc rubber plate 43 is located at the center of the rectangular frame 49 . The arc rubber plate 43 is located inside the circular groove ring 51 .

[0051] The inner wall of the arc plate 50 contacts the surface of the annular groove rod 41. After the surface of the polyester filament of the present invention contacts the inner wall of the annular groove rod 41, the rotating wheel 24 will push the annular groove rod 41 through the connecting rod 40 to extrude and limit the polyester filament when rotating. The annular groove rod 41 will squeeze the arc plate 50 to move when rotating. When the circular groove rod 41 rotates, the arc plate 50 squeezes the elastic sheet 46 through the bent plate 47 to produce deformation when moving. The arc plate 50 can use the elasticity of the elastic sheet 46 to push the rubber block 45 to be stuck in the inside of the annular groove rod 41 to prevent the polyester filament from falling off during transmission. At this time, the polyester filament will be located below the circular groove ring 51 and contact the inner wall of the circular groove ring 51, further improving the stability of the polyester filament during transmission. The rubber block 45 is located inside the circular groove rod 41, and two bent plates 47 are provided on the surface of the center frame 42. The two bent plates 47 are symmetrically arranged with the center frame 42 as the center, and the end away from the center frame 42 is oppositely arranged.

[0052] During use, the polyester filaments are squeezed and limited by the squeezing component 8 to increase the tension of the polyester filaments during transmission. At the same time, a limiting component 9 is provided on the surface of the squeezing component 8 to limit the polyester filaments to avoid sliding and dislocation of the polyester filaments during transmission, thereby improving the stability of the squeezing component 8 when squeezing the polyester filaments. The polyester filaments pass through the interior of the detection ring 5, and the detection ring 5 can transmit the detected data to the detection device 3 for separation, thereby detecting and processing the roundness of the polyester filaments. When the stabilizing component 7 starts working, it will support and limit the polyester filaments below the detection device 3, further improving the polyester filaments. In order to improve the stability of the polyester filament during the roundness detection, after the polyester filament passes through the detection ring 5, the electric push rod 10 is started to drive the connecting rod 11 to move downward. When the connecting rod 11 moves, it pushes the bifurcation frame 16 to slide on the surface of the fixed plate 13 through the inclined plate 18 and expands. When the inclined plate 18 expands, it pushes the semicircular spring piece 17 through the round rod 12 to deform. At this time, the semicircular spring piece 17 will push the stabilizing plate 15 to move upward. When the stabilizing plate 15 moves, it pushes the groove top frame 19 to contact the polyester filament and squeeze the polyester filament, so that the groove top frame 19 is used to limit the polyester filament to avoid tilting of the polyester filament during the roundness detection. When the fork frame 16 moves, it pushes the pressure plate 14 to move. The pressure plate 14 contacts the surface of the force-bearing rod 22 when it moves, and pushes the runner 24 to rotate on the surface of the shaft 25 through the force-bearing rod 22. When the runner 24 rotates, it pushes the end of the semicircular plate 23 to move downward through the mounting rod 21. When the semicircular plate 23 moves, it pushes the groove wheel 29 to contact the surface of the polyester filament through the roller frame 30. At this time, the polyester filament will contact the inner wall of the groove wheel 29. The groove wheel 29 is used to limit the polyester filament to avoid sliding of the polyester filament during transmission, thereby further improving the stability of the polyester filament during roundness detection. After the surface of the polyester filament contacts the inner wall of the annular groove rod 41, the rotating wheel 24 will push the annular groove rod 41 through the connecting rod 40 to squeeze and limit the polyester filament when it rotates. The annular groove rod 41 will squeeze the arc plate 50 to move when it rotates. The arc plate 50 squeezes the elastic sheet 46 through the bent plate 47 to deform when it moves. The arc plate 50 can use the elasticity of the elastic sheet 46 to push the rubber block 45 to be stuck in the inside of the annular groove rod 41 to prevent the polyester filament from falling off during transmission. At this time, the polyester filament will be located below the annular groove ring 51 and in contact with the inner wall of the annular groove ring 51, further improving the stability of the polyester filament during transmission.

[0053] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A detection device for testing the roundness of polyester filaments, comprising a support plate (1), the bottom of the support plate (1) is fixedly connected to a support leg (6), the inner wall of the support plate (1) is fixedly connected to a limit frame (2), the top of the inner wall of the limit frame (2) is fixedly connected to a detection device (3), the end of the detection device (3) is fixedly connected to a transmission frame (4), and the bottom of the transmission frame (4) is fixedly connected to a detection ring (5), characterized in that: Also includes: A stabilizing component (7), the stabilizing component (7) comprising an electric push rod (10), the bottom of the electric push rod (10) being fixedly connected to the top of the support plate (1), the top of the electric push rod (10) being fixedly connected to a connecting rod (11), the end of the connecting rod (11) being hinged to an inclined plate (18); An extrusion component (8), the extrusion component (8) includes a positioning frame (20), a positioning groove (26) is provided on the surface of the positioning frame (20), a shaft (25) is fixedly connected to the surface of the positioning frame (20), and a rotating wheel (24) is rotatably connected to the surface of the shaft (25); A limiting component (9) includes a center frame (42), the inner wall of the center frame (42) is fixedly connected to the surface of the shaft (25), the surface of the center frame (42) is fixedly connected to a slide plate (48), and the inner wall of the slide plate (48) is rotatably connected to a circular groove ring (51).

2. A detection device for testing the roundness of polyester filament according to claim 1, characterized in that: The stabilizing component (7) includes a bifurcated frame (16), the surface of the bifurcated frame (16) is hinged to the bottom of the inclined plate (18), one end of the bifurcated frame (16) away from the inclined plate (18) is fixedly connected to a pressure plate (14), the surface of the inclined plate (18) is fixedly connected to a round rod (12), the surface of the round rod (12) is sleeved with a semicircular spring piece (17), and the center of the semicircular spring piece (17) is fixedly connected to the stabilizing plate (15); The top of the stabilizing plate (15) is fixedly connected to a groove top frame (19), and the top of the supporting plate (1) is fixedly connected to a fixing plate (13).

3. A detection device for testing the roundness of polyester filament according to claim 2, characterized in that: Two inclined plates (18) are provided at the end of the connecting rod (11), and the two inclined plates (18) are symmetrically arranged with the connecting rod (11) as the center, and the ends of the two inclined plates (18) away from the connecting rod (11) are arranged away from each other.

4. A detection device for testing the roundness of polyester filament according to claim 3, characterized in that: The inner wall of the bifurcated frame (16) is slidably connected to the surface of the fixed plate (13); the number of the detection rings (5) is two, and the two detection rings (5) are symmetrically arranged with the groove top frame (19) as the center; the round rod (12) is located at one end of the inclined plate (18) close to the bifurcated frame (16).

5. The detection device for testing the roundness of polyester filament according to claim 4, characterized in that: The extrusion component (8) includes a mounting rod (21), the mounting rod (21) is fixedly connected to the surface of the rotating wheel (24), a semicircular plate (23) is fixedly connected to the surface of the mounting rod (21), an end of the semicircular plate (23) away from the mounting rod (21) is fixedly connected to a roller frame (30), and the inner wall of the roller frame (30) is rotatably connected to a groove wheel (29); The surface of the rotating wheel (24) is fixedly connected to a groove frame (27), the inner wall of the groove frame (27) is fixedly connected to a force-bearing rod (22), the surface of the force-bearing rod (22) is fixedly connected to a spring piece (28), and one end of the spring piece (28) away from the force-bearing rod (22) is fixedly connected to the surface of the positioning frame (20).

6. The device for testing the roundness of polyester filament according to claim 5, characterized in that: Two rotating wheels (24) are provided on the surface of the shaft (25), and the two rotating wheels (24) are symmetrically arranged with the shaft (25) as the center. The semicircular plate (23) extends from one end of the mounting rod (21) to the top of the round rod (12), and the end of the force-bearing rod (22) extends to the outer end of the groove frame (27). The surface of the force-bearing rod (22) contacts the surface of the pressure plate (14), and the bottom of the groove wheel (29) extends to the bottom outer end of the roller frame (30).

7. A detection device for testing the roundness of polyester filaments according to claim 6, characterized in that: The limiting component (9) comprises a bent plate (47), an end of the bent plate (47) is hinged to the surface of the center frame (42), an end of the bent plate (47) away from the center frame (42) is fixedly connected to a circular arc plate (50), an inner wall of the circular arc plate (50) is rotatably connected to a contact rod (44), an inner wall of the circular arc plate (50) is fixedly connected to a rubber block (45), an inner wall of the shaft rod (25) is fixedly connected to a rectangular frame (49), a surface of the rectangular frame (49) is fixedly connected to an elastic sheet (46), an end of the elastic sheet (46) away from the rectangular frame (49) is fixedly connected to the surface of the bent plate (47), a surface of the rectangular frame (49) is fixedly connected to an arc rubber sheet (43), a surface of the rotating wheel (24) is fixedly connected to a connecting rod (40), and a surface of the connecting rod (40) is rotatably connected to a circular ring groove rod (41).

8. The device for testing the roundness of polyester filament according to claim 7, characterized in that: The center frame (42) is located at the surface center of the shaft (25), the rectangular frame (49) is symmetrically arranged with the shaft (25) as the center, the arc rubber plate (43) is located at the surface center of the rectangular frame (49), and the arc rubber plate (43) is located inside the circular groove ring (51).

9. The device for testing the roundness of polyester filament according to claim 8, characterized in that: The inner wall of the arc plate (50) contacts the surface of the annular groove rod (41), the rubber block (45) is located inside the annular groove rod (41), and two bent plates (47) are provided on the surface of the center frame (42). The two bent plates (47) are symmetrically arranged with the center frame (42) as the center, and are arranged in opposite directions at one end away from the center frame (42).

Images