Strength detection device for polypropylene fiber filament manufacturing

Abstract

The invention belongs to the technical field of fiber strength detection, and particularly discloses a polypropylene fiber manufacturing strength detection device which comprises a detection device body, a control panel is fixedly connected to the position, close to the top end, of the front side of the detection device body, and supporting legs are fixedly connected to the four corners of the bottom end of the detection device body. The front end of the detection device main body is provided with six groups of clamping assemblies, the clamping assemblies comprise upper clamps, the clamping assemblies are used for clamping and fixing the upper end and the lower end of a polypropylene fiber yarn, the top ends of the upper clamps are fixedly connected with the detection device main body, the lower clamps are arranged at the bottom ends of the upper clamps, and the upper clamps and the lower clamps are fixedly connected with the detection device main body. A transfer detection mechanism is arranged between the lower clamp and the detection device main body, and the transfer detection mechanism is matched with the clamping assemblies, so that multiple groups of polypropylene fibers can be detected at the same time, and meanwhile, the redundant clamping assemblies are controlled not to move according to the number of the polypropylene fibers needing to be detected.

Description

Technical Field

[0001] The invention belongs to the field of fiber strength detection, and specifically discloses a strength detection device for polypropylene fiber yarn manufacturing. Background Art

[0002] Polypropylene is a synthetic fiber made from propylene, a by-product of petroleum refining, and is also called polyester fiber. Polypropylene fiber yarn is polyester fiber yarn. In order to ensure that the strength of polypropylene fiber yarn meets the production standards, a special strength testing device is required during the strength test.

[0003] The existing strength detection device can specifically refer to the patent application number: CN202210978066.2, which discloses a nylon monofilament strength detection device in detail, which relates to the field of nylon detection technology, including a frame, a transmission box is installed on the frame, a pair of vertical plates are vertically installed on the frame, and also includes a lifting block vertically slidably installed on the frame, and a lifting guide wheel is rotatably installed on the lifting block. An adjusting motor is installed in the transmission box, and the adjusting motor is driven and connected with a gear transmission mechanism, and the clutch drive mechanism is connected with a transmission gear, and the transmission gear is meshed with a rack fixed to the lifting block. An elastic push mechanism is installed at the bottom of the lifting block, and a pressure sensor abutting the elastic push mechanism is installed on the frame; the present invention can drive the threaded sleeve block to slide respectively through the two threaded rods provided, so that the spacing between the two vertical plates can be flexibly adjusted, so that the lifting guide wheel can pull the nylon line at different angles, and the strength test effect of the nylon line simulating various working conditions can be achieved.

[0004] Although the above-mentioned single-filament strength detection device can effectively detect a single fiber, it is necessary to perform strength detection on multiple polypropylene fiber threads from multiple different batches when performing random inspections on polypropylene fiber threads. The existing device can only detect the polypropylene fiber threads one by one, which takes a long time and has a low detection efficiency. Summary of the invention

[0005] In view of this, the technical problem to be solved by the present invention is to propose a strength detection device for polypropylene fiber manufacturing, so as to solve the problem that although a single fiber can be effectively detected in the prior art, it is necessary to perform strength detection on multiple polypropylene fiber threads from multiple different batches when sampling polypropylene fiber threads, and the polypropylene fiber threads can only be detected one by one, the detection takes a long time and the detection efficiency is low.

[0006] In order to achieve the above purpose, the present invention provides a strength detection device for manufacturing polypropylene fiber yarn, including a detection device body, a control panel is fixedly connected to the front side of the detection device body near the top, and support feet are fixedly connected to the four corners of the bottom end of the detection device body. A clamping assembly is arranged at the front end of the detection device body, and the clamping assembly includes an upper clamp and a lower clamp. The clamping assembly is provided with six groups, and the clamping assembly is used to clamp and fix the upper and lower ends of the polypropylene fiber yarn. The top end of the upper clamp is fixedly connected to the detection device body, and the lower clamp is arranged at the bottom end of the upper clamp. A separate detection mechanism is arranged between the lower clamp and the main body of the detection device, and the separate detection mechanism is used to control the movement of the six groups of clamping assemblies. The structural design of the cooperation between the separate detection mechanism and the clamping assembly effectively solves the problem that the single-filament strength detection device in the prior art can effectively detect a single fiber, but when spot-checking polypropylene fiber yarns, it is necessary to perform strength tests on multiple polypropylene fiber yarns from multiple different batches. The existing device can only detect the polypropylene fiber yarns one by one, and the detection takes a long time and the detection efficiency is low.

[0007] In the above technical scheme, preferably, the transfer detection mechanism includes a tension sensor, which is fixedly connected to the rear side of the lower clamp, and a connecting block is fixedly connected to the rear side of the tension sensor, and the connecting block is fixedly connected to the top end of the front side of the rack, and the rack is slidably connected to the inside of a transmission cavity, and the transmission cavity is opened inside the main body of the detection device, and the rack is also meshed with a gear, and the gear is arranged inside the transmission cavity, and a connecting rod is fixedly connected to the front end of the gear, and a rotating shaft is arranged on the rear side of the gear, and a control component is arranged between the gear and the rotating shaft, and the control component is used to control the meshing state between the gear and the rack, and a transmission component is arranged on the outside of the rotating shaft, and the transmission component is used to control the rotation of the gear, and the rear side of the rotating shaft is rotationally connected to the inner wall of the transmission cavity.

[0008] In the above technical solution, preferably, the front end of the connecting rod passes through the detection device body and extends to the outside of the detection device body, the front end of the connecting rod is fixedly connected with a knob, and the outside of the knob is provided with anti-slip grooves.

[0009] In the above technical solution, preferably, the transmission assembly includes a worm wheel, which is meshed with a worm, the right side of the worm is rotatably connected to the inner wall of the transmission chamber, the left side of the worm is fixedly connected to the output shaft of the servo motor, and the worm is fixedly connected to the inner wall of the transmission chamber.

[0010] In the above technical solution, preferably, the control component includes a plug-in shaft, the plug-in shaft is fixedly connected at the center position of the rear side of the gear, the plug-in shaft is inserted into the inside of the plug-in slot, the plug-in slot is arranged at the front side of the rotating shaft, the rear side of the inner wall of the plug-in slot is fixedly connected with a fixed seat, the fixed seat is provided with a moving slot, the inside of the moving slot is slidably connected with a moving block, the top of the moving block is provided with a first slide slot, the inside of the first slide slot is slidably connected with a first slider, the top of the first slider is fixedly connected to the front side of the bottom end of the hinge rod, the rear side of the hinge rod is rotatably connected with the hinge seat, The hinge seat is fixedly connected to the rear side of the top end of the fixed seat, the rear side of the moving block is fixedly connected to a guide rod, the outer side of the guide rod is wound with a spring, the front side of the moving block is fixedly connected to a top rod, the bottom end of the fixed seat is fixedly connected to a connecting seat, the connecting seat is rotatably connected to the claw, the top end of the claw is fixedly connected to a second slider, the second slider is slidably connected to the inside of the second slide groove, the second slide groove is opened on both sides of the pulling block, the pulling block is fixedly connected to the bottom end of the moving block, the claw is hook-shaped, and the claw is engaged with the block, and the block is fixedly connected to the rear side of the plug-in shaft.

[0011] In the above technical solution, preferably, the plug-in shaft is designed to be rectangular as a whole, and the plug-in shaft fits into the plug-in slot.

[0012] In the above technical solution, preferably, the front end of the spring is fixedly connected to the rear side of the moving block, and the rear side of the spring is fixedly connected to the rear side of the inner wall of the moving groove.

[0013] In the above technical solution, preferably, a cushion block is fixedly connected to the front side of the push rod, and the cushion block is made of rubber.

[0014] In the above technical solution, preferably, a third slider is fixedly connected to the bottom end of the plug-in shaft, and the third slider is slidably connected inside a third slide groove, and the third slide groove is provided on the inner wall of the bottom end of the transmission cavity.

[0015] In the above technical solution, preferably, the pulling block is designed in an inverted U shape as a whole, and the second sliding groove is designed to be inclined and gradually descends from front to back.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention arranges the cooperation between the split detection mechanism and the clamping assembly, so that multiple groups of polypropylene fiber threads can be detected at the same time, and the redundant clamping assemblies can be controlled not to move according to the number of polypropylene fiber threads that need to be detected. When one or a few groups of polypropylene fiber threads need to be detected, the load of the servo motor can be significantly reduced, thereby achieving energy-saving effect. When there are many clamping assemblies that need to be detected, six groups of clamping assemblies can be used simultaneously to detect the polypropylene fiber threads, which effectively improves the efficiency of detecting the polypropylene fiber threads.

[0017] 2. The present invention can effectively avoid the automatic return of the clamping assembly due to the reaction force by adopting the structural design of the servo motor, worm and worm wheel combination through the control of the transmission assembly. The cooperation between the worm and the worm wheel has the characteristic of self-locking. When the worm does not actively rotate in the opposite direction, the worm wheel will not drive the worm to produce a reverse effect due to the effect of the reaction force.

[0018] 3. The present invention controls whether the gear is meshing with the rack through the structural design of the control component. This effect allows the designated clamping components to be tested by pulling the polypropylene fibers for testing with designated multiple groups or one group of clamping components. The clamping components can effectively adapt to the number of polypropylene fibers that need to be tested, and whether to use the group of clamping components is controlled according to the number of polypropylene fibers that need to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 For the present invention Figure 3 The enlarged structural diagram at B in the middle; Figure 5 It is a schematic diagram of a first partial three-dimensional structure of the present invention; Figure 6 It is a schematic diagram of the partial explosion structure of the present invention; Figure 7 It is a schematic diagram of a second partial three-dimensional structure of the present invention; Figure 8 It is a schematic diagram of a third partial three-dimensional structure of the present invention; Fig. 9 It is a schematic diagram of a fourth partial three-dimensional structure of the present invention.

[0020] In the figure: 1. detection device body; 2. control panel; 3. support foot; 4. upper fixture; 5. lower fixture; 51. tension sensor; 52. connecting block; 53. rack; 54. gear; 55. connecting rod; 56. knob; 57. rotating shaft; 58. transmission chamber; 59. worm gear; 60. worm; 61. servo motor; 62. plug-in shaft; 63. plug-in slot; 64. fixed seat; 65. moving slot; 66. moving block; 67. first slide slot; 68. first slider; 69. hinged rod; 70. hinged seat; 71. guide rod; 72. spring; 73. push rod; 74. cushion block; 75. connecting seat; 76. claw; 77. second slider; 78. second slide slot; 79. pulling block; 80. clamping block; 81. third slider; 82. third slide slot. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] like Figure 1-Figure 9The strength detection device for manufacturing polypropylene fiber yarn shown in the figure comprises a detection device body 1, a control panel 2 is fixedly connected at a position near the top of the front side of the detection device body 1, support feet 3 are fixedly connected at the four corners of the bottom end of the detection device body 1, a clamping assembly is arranged at the front end of the detection device body 1, the clamping assembly comprises an upper clamp 4 and a lower clamp 5, six groups of clamping assemblies are arranged, and the clamping assembly is used to clamp and fix the upper and lower ends of the polypropylene fiber yarn, the top end of the upper clamp 4 is fixedly connected to the detection device body 1, the lower clamp 5 is arranged at the bottom end of the upper clamp 4, and a separate detection mechanism is arranged between the lower clamp 5 and the detection device body 1, and the separate detection mechanism is used to control the movement of the six groups of clamping assemblies, and by arranging the cooperation between the separate detection mechanism and the clamping assembly, it is possible to detect multiple groups of polypropylene fiber yarns at the same time. While testing, it is possible to control the redundant clamping components not to move according to the number of polypropylene fiber yarns that need to be tested. When only one or a few groups of polypropylene fiber yarns need to be tested, the load of the servo motor 61 can be significantly reduced, thereby achieving energy saving. When there are many clamping components that need to be tested, six groups of clamping components can be used simultaneously to test the polypropylene fiber yarns, thereby effectively improving the efficiency of testing the polypropylene fiber yarns. This solves the problem that although the single-filament strength testing device in the prior art can effectively test a single fiber, it is necessary to perform strength testing on multiple polypropylene fiber yarns from multiple different batches when sampling the polypropylene fiber yarns. The existing device can only test the polypropylene fiber yarns one by one, and the testing takes a long time, resulting in low testing efficiency.

[0024] The split detection mechanism includes a tension sensor 51, which is fixedly connected to the rear side of the lower clamp 5, and a connecting block 52 is fixedly connected to the rear side of the tension sensor 51. The connecting block 52 is fixedly connected to the top end of the front side of the rack 53, and the rack 53 is slidably connected to the inside of the transmission chamber 58. The transmission chamber 58 is opened inside the detection device body 1, and the rack 53 is also meshed with a gear 54. The gear 54 is arranged inside the transmission chamber 58, and the front end of the gear 54 is fixedly connected with a connecting rod 55. A rotating shaft 57 is arranged on the rear side of the gear 54, and a control component is arranged between the gear 54 and the rotating shaft 57. The control component is used to control the meshing state between the gear 54 and the rack 53. A transmission component is arranged on the outer side of the rotating shaft 57, and the transmission component is used to control the rotation of the gear 54. The rear side of the rotating shaft 57 is rotatably connected to the inner wall of the transmission chamber 58. The control panel 2 is electrically connected to the servo motor 61 and the tension sensor 51, and the control panel 2 can control the operation of the servo motor 61. When six groups of polypropylene fiber yarns are to be detected at the same time.

[0025] The front end of the connecting rod 55 passes through the detection device body 1 and extends to the outside of the detection device body 1. The front end of the connecting rod 55 is fixedly connected to a knob 56. The outside of the knob 56 is provided with anti-slip grooves. The anti-slip grooves provided on the outside of the knob 56 increase the friction force to prevent the knob 56 from slipping due to too small friction when it is pushed. At the same time, the gear 54 can be manually driven to rotate through the knob 56, so that when the transmission component of the device is damaged, the knob 56 can be used as a redundant functional backup to temporarily detect the acrylic fiber.

[0026] The transmission assembly includes a worm wheel 59, which meshes with a worm 60. The right side of the worm 60 is rotationally connected to the inner wall of the transmission chamber 58, and the left side of the worm 60 is fixedly connected to the output shaft of the servo motor 61. The worm 60 is fixedly connected to the inner wall of the transmission chamber 58. When six groups of polypropylene fiber yarns are to be detected at the same time, the servo motor 61 is controlled to work through the control panel 2. When the servo motor 61 drives the worm 60 to rotate, the worm wheel 59 that cooperates with the worm 60 rotates synchronously. The rotation of the worm wheel 59 drives the fixedly connected rotating shaft 57 to rotate synchronously, and drives the gear 54 to rotate synchronously through the control assembly. The rotation of the gear 54 drives the rack 53 to move, so that the rack 53 drives the tension sensor 51 and the lower clamp 5 to move downward, pulling the polypropylene fiber yarn through the tension sensor 51 to detect the magnitude of the tension on the polypropylene fiber yarn and send the detected data to the control panel 2, thereby having the effect of detecting the strength of the polypropylene fiber yarn.

[0027] The control component includes a plug-in shaft 62, which is fixedly connected to the center position of the rear side of the gear 54, and the plug-in shaft 62 is inserted into the inside of the plug-in slot 63, and the plug-in slot 63 is opened on the front side of the rotating shaft 57. The rear side of the inner wall of the plug-in slot 63 is fixedly connected with a fixed seat 64, and a moving slot 65 is opened on the fixed seat 64. A moving block 66 is slidably connected inside the moving slot 65, and a first slide groove 67 is opened at the top of the moving block 66. A first slider 68 is slidably connected inside the first slide groove 67. The top of the first slider 68 is fixedly connected to the front side of the bottom end of the hinge rod 69, and the rear side of the hinge rod 69 is rotatably connected to the hinge seat 70. The hinge seat 70 is fixedly connected to the rear side of the top of the fixed seat 64, and the rear side of the moving block 66 is fixed The guide rod 71 is connected, and a spring 72 is wound around the outside of the guide rod 71. The front side of the moving block 66 is fixedly connected to a top rod 73. The bottom end of the fixed seat 64 is fixedly connected to a connecting seat 75. The connecting seat 75 is rotatably connected to the claw 76. The top of the claw 76 is fixedly connected to a second slider 77. The second slider 77 is slidably connected to the inside of the second slide groove 78. The second slide groove 78 is opened on both sides of the pulling block 79. The pulling block 79 is fixedly connected to the bottom end of the moving block 66. The claw 76 is hook-shaped, and the claw 76 is engaged with the block 80. The block 80 is fixedly connected to the rear side of the plug-in shaft 62. The front end of the spring 72 is fixedly connected to the rear side of the moving block 66, and the rear side of the spring 72 is fixedly connected to the rear wall of the moving groove 65. When a certain group of pulling components is not needed, the knob 56 is first pressed toward the detection device body 1 to move the knob 56 toward the detection device body 1, and the connecting rod 55 is also driven to move toward the detection device body 1 synchronously so that the connecting rod 55 pushes the gear 54 to move. When the gear 54 moves, it pushes the plug-in shaft 62 to move toward the inside of the plug-in slot 63. At this time, the plug-in shaft 62 pushes the cushion block 74 and the push rod 73 to move, and the cushion block 74 pushes the moving block 66 to move backward, so that the first sliding block 68 slidably connected to the inside of the first sliding slot 67 slides along the shape of the first sliding slot 67. At this time, the moving block 66 squeezes the spring 72 at the same time, causing the spring 72 to further produce elastic deformation. When the moving block 66 moves backward, the pulling block 79 fixedly connected to the bottom end of the moving block 66 passes through the second slide groove 78 and the second slider 77, pulling the claw 76 to rotate slightly counterclockwise, and the first slider 68 no longer remains at the center position of the front end of the first slide groove 67 after sliding inside the first slide groove 67. At this time, the moving block 66 moves forward under the action of the restoring force of the spring 72, and pushes the top rod 73 and the cushion block 74 to move forward synchronously. At the same time, the pulling block 79 fixedly connected to the bottom end of the moving block 66 also moves synchronously with the movement of the moving block 66, and the second slide groove 78 and the second slider 77 cooperate to release the claw 76 from the engagement with the block 80. At this time, the plug shaft 62 is no longer fixed.Under the thrust of the push rod 73 and the cushion block 74, the push rod 73 and the fixedly connected gear 54 are moved forward synchronously to release the meshing state with the rack 53. At this time, the group of gears 54 cannot drive the corresponding lower clamp 5 to move when rotating. When the group of lower clamps 5 is to be reused, the knob 56 is pushed toward the detection device body 1 again to make the gear 54 mesh with the rack 53. The control component plays the role of which groups or a group of specified clamping components are required to pull the polypropylene fiber yarn for detection, which groups or a group of specified clamping components are required to be detected, and the clamping components can be effectively adapted to the number of polypropylene fiber yarns to be detected, and whether to use the group of clamping components is controlled according to the number of polypropylene fiber yarns to be detected.

[0028] The plug-in shaft 62 is designed to be rectangular as a whole, and the plug-in shaft 62 is matched with the plug-in slot 63. The plug-in shaft 62 has an effective effect of transmitting rotation through the rectangular design, thereby avoiding the failure to transmit power to the gear 54 when the first slide slot 67 rotates.

[0029] A cushion block 74 is fixedly connected to the front side of the push rod 73. The cushion block 74 is made of rubber. The rubber cushion block 74 has the effect of buffering the collision between the plug-in shaft 62 and the plug-in slot 63, thereby avoiding damage to the plug-in shaft 62 or the push rod 73 due to the impact.

[0030] The bottom end of the plug-in shaft 62 is fixedly connected with a third slider 81, and the third slider 81 is slidably connected inside the third slide groove 82. The third slide groove 82 is provided on the inner wall of the bottom end of the transmission chamber 58. When the plug-in shaft 62 slides, the third slider 81 fixedly connected to the plug-in shaft 62 slides synchronously inside the third slide groove 82. The combination of the third slider 81 and the third slide groove 82 has the effect of limiting the moving distance of the plug-in shaft 62, thereby preventing the plug-in shaft 62 from moving excessively under the thrust of the top rod 73 and the cushion block 74.

[0031] The pulling block 79 is designed in an inverted U shape as a whole, and the second sliding groove 78 is designed to be inclined and gradually descend from front to back.

[0032] Working principle: When six groups of polypropylene fiber threads need to be tested at the same time, the servo motor 61 is controlled by the control panel 2 to work. When the servo motor 61 drives the worm 60 to rotate, the worm wheel 59 matched with the worm 60 rotates synchronously. The rotation of the worm wheel 59 drives the fixedly connected rotating shaft 57 to rotate synchronously, and drives the gear 54 to rotate synchronously through the control component. The rotation of the gear 54 drives the rack 53 to move, so that the rack 53 drives the tension sensor 51 and the lower clamp 5 to move downward, and pulls the polypropylene fiber thread through the tension sensor 51 to detect the size of the tension on the polypropylene fiber thread, and sends the detected data to the control panel 2, so as to detect the strength of the polypropylene fiber thread.

[0033] When a certain group of pulling components is not needed, the knob 56 is first pressed toward the detection device body 1, so that the knob 56 moves toward the detection device body 1, and drives the connecting rod 55 to move toward the detection device body 1 synchronously, so that the connecting rod 55 pushes the gear 54 to move. When the gear 54 moves, it pushes the plug shaft 62 to move toward the inside of the plug groove 63. At this time, the plug shaft 62 pushes the cushion block 74 and the push rod 73 to move, and the cushion block 74 pushes the moving block 66 to move backward, so that the first sliding block 68 slidably connected to the inside of the first sliding groove 67 slides along the shape of the first sliding groove 67. At this time, the moving block 66 simultaneously squeezes the spring 72, so that the spring 72 further produces elastic deformation. When the moving block 66 moves backward, the pulling block 79 fixedly connected to the bottom end of the moving block 66 passes through the second sliding groove 78 and the second sliding block 77, pulling the claw 76 to rotate slightly counterclockwise, and the first sliding block 68 is in the first sliding groove. The cam 76 is then released from the engagement with the block 80 by the second slide groove 78 and the second slider 77 , and the pinion 54 is then released from the engagement with the rack 53 .

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A strength detection device for polypropylene fiber manufacturing, comprising a detection device body (1), a control panel (2) fixedly connected at a position near the top of the front side of the detection device body (1), and support feet (3) fixedly connected at the four corners of the bottom end of the detection device body (1), characterized in that: A clamping assembly is arranged at the front end of the detection device body (1), the clamping assembly comprising an upper clamp (4) and a lower clamp (5), and the clamping assembly is arranged in six groups, and the clamping assembly is used to clamp and fix the upper and lower ends of the polypropylene fiber filaments, the top end of the upper clamp (4) is fixedly connected to the detection device body (1), and the lower clamp (5) is arranged at the bottom end of the upper clamp (4), and a separate detection mechanism is arranged between the lower clamp (5) and the detection device body (1), and the separate detection mechanism is used to control the movement of the six groups of clamping assemblies.

2. A strength detection device for polypropylene fiber manufacturing according to claim 1, characterized in that: The transfer detection mechanism comprises a tension sensor (51), the tension sensor (51) is fixedly connected to the rear side of the lower clamp (5), the rear side of the tension sensor (51) is fixedly connected to a connection block (52), the connection block (52) is fixedly connected to the top end of the front side of the rack (53), the rack (53) is slidably connected to the inside of a transmission cavity (58), the transmission cavity (58) is opened inside the detection device body (1), the rack (53) is also meshed with a gear (54), and the gear (54) is arranged on the transmission cavity (58). The gear (54) is arranged inside the movable cavity (58), and the front end of the gear (54) is fixedly connected to a connecting rod (55), a rotating shaft (57) is arranged on the rear side of the gear (54), and a control component is arranged between the gear (54) and the rotating shaft (57), and the control component is used to control the meshing state between the gear (54) and the rack (53), and a transmission component is arranged on the outer side of the rotating shaft (57), and the transmission component is used to control the rotation of the gear (54), and the rear side of the rotating shaft (57) is rotatably connected to the inner wall of the transmission cavity (58).

3. A strength detection device for polypropylene fiber manufacturing according to claim 2, characterized in that: The front end of the connecting rod (55) penetrates the detection device body (1) and extends to the outside of the detection device body (1); the front end of the connecting rod (55) is fixedly connected to a knob (56); and the outside of the knob (56) is provided with anti-slip grooves.

4. A strength detection device for polypropylene fiber manufacturing according to claim 2, characterized in that: The transmission assembly comprises a worm wheel (59), the worm wheel (59) meshing with a worm (60), the right side of the worm (60) being rotationally connected to the inner wall of the transmission chamber (58), the left side of the worm (60) being fixedly connected to the output shaft of a servo motor (61), and the worm (60) being fixedly connected to the inner wall of the transmission chamber (58).

5. A strength detection device for polypropylene fiber manufacturing according to claim 2, characterized in that: The control component comprises a plug-in shaft (62), wherein the plug-in shaft (62) is fixedly connected at the center position of the rear side of the gear (54), the plug-in shaft (62) is inserted into the inside of the plug-in slot (63), the plug-in slot (63) is arranged on the front side of the rotating shaft (57), the rear side of the inner wall of the plug-in slot (63) is fixedly connected with a fixed seat (64), the fixed seat (64) is provided with a moving slot (65), the inside of the moving slot (65) is slidably connected with a moving block (66), the top end of the moving block (66) is provided with a first slide slot (67), the inside of the first slide slot (67) is slidably connected with a first slider (68), the top end of the first slider (68) is fixedly connected to the front side of the bottom end of the hinge rod (69), the rear side of the hinge rod (69) is rotatably connected with the hinge seat (70), the hinge seat (70) is connected to the fixed seat (6 4) The rear side of the top is fixedly connected, the rear side of the moving block (66) is fixedly connected with a guide rod (71), the outer side of the guide rod (71) is wound with a spring (72), the front side of the moving block (66) is fixedly connected with a top rod (73), the bottom end of the fixed seat (64) is fixedly connected with a connecting seat (75), the connecting seat (75) is rotatably connected with the claw (76), the top end of the claw (76) is fixedly connected with a second slider (77), the second slider (77) is slidably connected to the inside of a second slide groove (78), the second slide groove (78) is opened on both sides of the pulling block (79), the pulling block (79) is fixedly connected to the bottom end of the moving block (66), the claw (76) is designed in a hook shape, and the claw (76) is engaged with the clamping block (80), and the clamping block (80) is fixedly connected to the rear side of the plug-in shaft (62).

6. A strength detection device for polypropylene fiber manufacturing according to claim 5, characterized in that: The plug-in shaft (62) is designed to be rectangular as a whole, and the plug-in shaft (62) fits into the plug-in slot (63).

7. A strength detection device for polypropylene fiber manufacturing according to claim 5, characterized in that: The front end of the spring (72) is fixedly connected to the rear side of the moving block (66), and the rear side of the spring (72) is fixedly connected to the rear side of the inner wall of the moving groove (65).

8. A strength detection device for polypropylene fiber manufacturing according to claim 5, characterized in that: A cushion block (74) is fixedly connected to the front side of the push rod (73), and the cushion block (74) is made of rubber.

9. A strength detection device for polypropylene fiber manufacturing according to claim 5, characterized in that: A third sliding block (81) is fixedly connected to the bottom end of the plug-in shaft (62), and the third sliding block (81) is slidably connected inside a third sliding groove (82). The third sliding groove (82) is formed on the inner wall of the bottom end of the transmission cavity (58).

10. A strength detection device for polypropylene fiber manufacturing according to claim 5, characterized in that: The pulling block (79) is designed in an inverted U shape as a whole, and the second sliding groove (78) is designed to be inclined and gradually descend from front to back.

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