Chemical fiber precursor strength detection equipment and detection process thereof

Abstract

The invention discloses chemical fiber protofilament strength detection equipment and a detection process thereof. The chemical fiber protofilament strength detection equipment comprises a base, a filament winding unit arranged on one side of the base and a stretching unit arranged on the other side of the base, the wire winding unit comprises a motor, a wire winding frame and a pushing frame arranged on the wire winding frame in a sliding mode. The stretching unit comprises a positioning frame and a sliding frame, and a linear module used for driving the sliding frame to move relative to the positioning frame is arranged on the base; the motor comprises an output shaft matched with the wire winding frame and a lead screw connected with the output shaft, a one-way bearing is arranged between the wire winding frame and the output shaft, and a nut matched with the lead screw is arranged on the push frame. The output shaft realizes synchronous rotation of the wire winding frame and the push frame or transverse movement of the push frame relative to the wire winding frame through forward and reverse rotation switching so as to push a wire coil to the stretching unit; the problems that in the prior art, manual operation is dangerous, the number of wound coils is inaccurate, and efficiency is low due to process separation are mainly solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical fiber detection equipment, and particularly to a chemical fiber filament strength detection equipment and a detection process thereof. BACKGROUND

[0002] The chemical fiber filament is a basic raw material for chemical fiber production, and its mechanical properties, especially the ductility (elongation at break), are key indicators for evaluating fiber quality and determining subsequent processing and application range. Currently, the commonly used test method in the industry is to stretch the tow to break through tensile testing to obtain the maximum elongation.

[0003] The existing test process usually includes two independent stages: manual winding and device stretching.

[0004] Firstly, in the winding stage, the operator needs to manually wind the filament while holding the tool when the raw material is in a high-temperature molten state, and the wound filament is wound into a small bundle of a certain number of turns. This method has the following disadvantages: first, the high-temperature molten raw material poses a risk of burning the operator, and the labor protection requirements are extremely strict; second, relying on manual control of the winding turns, there is a large measurement error and subjectivity, resulting in inconsistent length and number of turns of the final bundled tow, which directly affects the accuracy and repeatability of the subsequent tensile test data.

[0005] Subsequently, in the stretching test stage, the manually wound small bundle of tow needs to be transferred from the winding station to the dedicated tensile testing device. This transfer process not only increases the additional operation steps, reduces the overall test efficiency, but also causes the tow to be disordered, stretched accidentally or contaminated during the transfer, further introducing test errors, and it is difficult to ensure the objectivity and authenticity of the test results. SUMMARY

[0006] The present application provides a chemical fiber filament strength detection equipment and a detection process thereof to solve the problems of manual operation risk, inaccurate winding turns, and low efficiency caused by process separation in the prior art.

[0007] To solve the above technical problems, the present application provides the following technical scheme: a chemical fiber filament strength detection equipment, comprising a base, a winding unit arranged on one side of the base, and a stretching unit arranged on the other side of the base; The winding unit comprises a motor, a winding frame, and a push frame slidingly arranged on the winding frame; The stretching unit comprises a positioning frame and a sliding frame, and a linear module is arranged on the base to drive the sliding frame to displace relative to the positioning frame; The motor comprises an output shaft matched with the wire winding frame, a screw rod connected with the output shaft, and a one-way bearing arranged between the wire winding frame and the output shaft, and the push frame is provided with a nut matched with the screw rod. The output shaft is switched by forward and reverse rotation to realize synchronous rotation of the wire winding frame and the push frame or transverse movement of the push frame relative to the wire winding frame to push the wire roll to the stretching unit.

[0008] In the above scheme, preferably, the wire winding frame comprises a plurality of wire winding rods arranged in a circle, and the push frame is provided with a guide plate matched with the wire winding rods.

[0009] In the above scheme, preferably, the guide plate is provided with a guide groove matched with the wire winding rods.

[0010] In the above scheme, preferably, any wire winding rod is arranged on the wire winding frame and is provided with a plurality of contact teeth capable of contacting the molten raw material, and the other end of the wire winding rod is provided with a driving gear, and the wire winding rod is driven to rotate by the driving gear to realize the contact or non-contact state of the contact teeth and the molten raw material.

[0011] In the above scheme, preferably, the wire winding unit comprises a sliding frame for fixing the motor, the sliding frame is provided with a driving rack matched with the driving gear, and a return torsion spring is arranged between the driving gear and the wire winding frame.

[0012] In the above scheme, preferably, the sliding frame is provided with a driving push rod connected with the driving rack.

[0013] In the above scheme, preferably, the driving gear is provided with a limiting pin, and the wire winding frame is provided with a limiting plate matched with the limiting pin.

[0014] In the above scheme, preferably, the sliding frame is arranged on the base through the symmetrical guide rails, and the stretching unit comprises a fixing frame, and the screw rod is arranged through the fixing frame; The fixing frame is provided with a meshing assembly matched with the screw rod, the meshing assembly comprises a meshing push rod and a meshing block, and the meshing block is provided with a screw thread matched with the screw rod; The push frame is provided with a sensing switch matched with the fixing frame.

[0015] In the above scheme, preferably, the positioning frame and the sliding frame are both provided with an extension plate arranged in the circumferential movement of the wire winding frame, any extension plate is provided with a pressure sensor, and the end of the extension plate is provided with a stop plate extending away from the center of the screw rod.

[0016] In the above scheme, preferably, a chemical fiber raw yarn strength detection device detects the detection process of the chemical fiber raw yarn, and the process is as follows: S1: the motor rotates to drive the wire winding frame through the one-way bearing, the push frame and the wire winding frame rotate synchronously, the molten chemical raw material is dipped by any wire winding rod and then drawn, with the increase of the winding frame turns, the chemical raw silk is wound on the wire winding frame; S2: the motor records the turns of the wire winding frame, when the turns reach the standard, the motor stops rotating, and the output shaft reversely rotates, at this time, the output shaft reversely rotates relative to the wire winding frame through the one-way bearing, that is, the wire winding frame is in a static state, the push frame is driven to slide relative to the wire winding frame after the output shaft reversely rotates; S3: the push frame pushes the chemical raw silk wound on the wire winding rod of the wire winding frame to the side close to the stretching unit through the guide plate and the guide groove; S4: the push frame continues to drive to push the chemical raw silk to the positioning frame and the sliding frame of the stretching unit, at this time, the chemical raw silk forms a bundle and is sleeved on the positioning frame and the sliding frame; S5: the sliding frame slides relative to the positioning frame through the linear module until the chemical raw silk bundle is broken, and the linear module displacement distance is used to determine the tensile strength of the chemical raw silk.

[0017] The beneficial effects of the present application are: the present application realizes the full-process automation from dipping the molten raw material, automatic winding to pushing to the stretching station, completely avoids the direct contact of the operator with the high-temperature molten body, and significantly improves the production safety; Meanwhile, the number of winding turns is accurately controlled by the motor, and precise stretching is carried out in combination with the linear module, which ensures the consistency of each test sample, makes the measurement result accurate and reliable, and has high repeatability; In addition, the device highly integrates the winding and stretching test functions, saves the intermediate transfer link, greatly improves the detection efficiency, uses the combination of the one-way bearing and the screw rod nut pair, and simply and reliably switches the winding and pushing silk modes through the forward and reverse rotation of the motor, and the reversible contact tooth design effectively meets the functional requirements of dipping raw materials and smooth winding, the overall structure is stable, and the control logic is simple. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the present application. Figure 1

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the present application.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the present application.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the present application. ​

[0023] Figure 6 For the present invention Figure 3 A magnified schematic diagram of the structure at point B in the middle. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: See also Figures 1-6 .

[0025] A chemical fiber filament strength testing device includes a base 1, a winding unit 2 disposed on one side of the base 1, and a tensioning unit 3 disposed on the other side of the base 1. The winding unit 2 includes a motor 201, a winding frame 202, and a pusher 203 slidably disposed on the winding frame 202.

[0026] The motor 201 is a servo geared motor, which is connected to a PLC controller. The speed and number of revolutions can be controlled by the PLC controller. The motor 201 is equipped with an output shaft 204. The winding frame 202 is connected to the output shaft 204 through a one-way bearing 206. That is, when the output shaft 204 moves along... Figure 1 Taking the right-hand view as an example, when the direction shown is rotated clockwise, the output shaft 204 drives the winding frame 202 to rotate synchronously through the limiting of the one-way bearing 206. When the output shaft 204 rotates in reverse, the output shaft 204 rotates relative to the center of the winding frame 202, that is, the winding frame 202 can be in a stationary state.

[0027] The winding frame 202 includes a frame body and a plurality of winding rods 208 arranged perpendicularly to the frame body and evenly distributed around the circumference of the frame body, such as Figure 1 and Figure 4 As shown, in this embodiment, taking the setting of 4 sets of winding rods 208 as an example, a hot melt groove can be set on the base 1, which can place the chemical fiber raw material in the hot melt groove for hot melting. After the outer wall of any winding rod 208 dips into the chemical fiber raw material in the hot melt groove, the chemical fiber filament can be pulled out. Then, by rotating the winding frame 202, the chemical fiber filament is wound on the winding frame 202. Preferably, the hot melt groove is set at the bottom of the winding rod 208 along the length direction, and a lifting mechanism can be configured to achieve contact between the outer wall of the winding rod 208 and the chemical fiber raw material in the hot melt groove.

[0028] In order to realize better dipping of raw materials around the wire rod 208, in the embodiment, any one wire rod 208 rotatingly arranged on the wire frame 202 is selected, and a plurality of contact teeth 211 are equidistantly arranged on the outer wall of the end away from the motor 201, a through slot for the contact teeth 211 to pass through is arranged on the guide plate 209 corresponding to the contact teeth 211 on the push frame 203, and a driving gear 212 is fixedly arranged on the end close to the motor 201 after rotatingly penetrating the wire frame 202. The driving gear 212 can make the contact teeth 211 at the end away from the center of the output shaft 204 or at the end close to the center of the output shaft 204 after rotating 180 degrees back and forth, so as to realize the contact or non-contact state of the contact teeth 211 and the molten raw materials.

[0029] The driving gear 212 is provided with a limiting pin 213, as shown in Figure 2 and Figure 6 The limiting pin 213 is fixedly arranged on the end face of the driving gear 212 towards the wire frame 202, and the wire frame 202 is fixedly provided with a limiting plate 214 matched with the limiting pin 213. A reset torsion spring is arranged between the driving gear 212 and the wire frame 202, that is, initially, the contact teeth 211 are at the side towards the center of the output shaft 204, the limiting pin 213 is in contact with the limiting plate 214, and the state is maintained under the elastic force of the reset torsion spring. When the driving gear 212 rotates 180°, the limiting pin 213 is away from the limiting plate 214, and the state as shown in Figure 2 is formed. At this time, the elastic force of the reset torsion spring is overcome by the rotating external force of the driving gear 212, so that the contact teeth 211 rotate 180° with the wire rod 208 to form the state as shown in Figure 3 towards the end away from the output shaft 204. After the external force of the driving gear 212 disappears, the reset torsion spring resets to the state that the contact teeth 211 are towards the end of the output shaft 204.

[0030] The sliding frame 4 is provided with a driving rack 401 matched with the driving gear 212, and the driving rack 401 is a circular arc rack concentrically arranged around the wire frame 202. The sliding frame 4 is provided with a driving push rod 402 connected with the driving rack 401. When the driving push rod 402 pushes the driving rack 401 out, the driving gear 212 rotates with the wire frame 202 after the wire frame 202 rotates, and rolls relative to the driving rack 401 after the driving gear 212 is in contact with the driving rack 401, so as to realize the rotation of the driving gear 212. Preferably, the meshing length of the driving rack 401 and the driving gear 212 is half of the diameter of the driving gear 212, that is, the driving gear 212 can drive the wire rod 208 connected therewith to rotate 180° after rolling relative to the driving rack 401. Further, the wire frame 202 is driven to rotate along Figure 2When the motor 201 rotates clockwise in the right side view direction, the drive rack 401 is pushed out by the drive push rod 402, and at this time, the drive gear 212 can rotate 180° when passing through the drive rack 401, and the engagement end of the drive rack 402 is at the lowest point of the circumference of the bobbin 202, that is, the contact tooth 211 cooperating with the drive gear 212 is in a vertically downward state, that is, it can contact the chemical fiber raw material in the hot melt groove below; when the bobbin 202 rotates counterclockwise, the drive gear 212 is relatively fixed at this position after the drive gear 212 reversely contacts the drive rack 402 due to the cooperation of the limiting pin 213 and the limiting plate 214, and the output shaft 204 can rotate relative to the center of the bobbin 202 through the one-way bearing 206.

[0031] The output shaft 204 is fixedly provided with a lead screw 205 at one end away from the motor 201, the push frame 203 is provided with a nut 207 cooperating with the lead screw 205, and the push frame 203 is provided with a guide plate 209 cooperating with a winding lead screw 208; the guide plate 209 is provided with a guide groove 210 cooperating with the winding lead screw 208, and when the output shaft 204 rotates relative to the center of the bobbin 202 through the one-way bearing 206, the lead screw 205 rotates synchronously, and the push frame 203 slides to the left along the direction shown in the figure through the cooperation of the nut 207, pushes the chemical fiber raw yarn bundle wound on the winding lead screw 208 to the left, and limits the winding lead screw 208 through the clamping of the guide groove 210. All the raw yarns on the winding lead screw 208 are pushed to the left side; that is, the output shaft 204 realizes synchronous rotation of the bobbin 202 and the push frame 203 or transverse movement of the push frame 203 relative to the bobbin 202 by switching the forward and reverse rotation to push the yarn roll to the stretching unit 3. Figure 1

[0032] In this embodiment, in order to push the wound chemical fiber raw yarn bundle to the stretching unit 3 for stretching test, the stretching unit 3 includes a positioning frame 301 and a sliding frame 302, and the base 1 is vertically provided with a fixed frame 304, and the fixed frame 304 is vertically provided with a linear module 303 for driving the sliding frame 302 to displace relative to the positioning frame 301, that is, the sliding frame 302 is fixedly provided on the sliding block of the linear module 303.

[0033] ​The sliding frame 4 is slidably arranged on the base 1 through the symmetrically arranged guide rails 5, the lead screw 205 is guided through the fixed frame 304, the fixed frame 304 is provided with the meshing assembly 6 matched with the lead screw 205, the meshing assembly 6 comprises the meshing push rod 601 and the meshing block 602, the meshing block 602 is provided with the thread matched with the lead screw 205, the push frame 203 is provided with the inductive switch 215 matched with the fixed frame 304, the inductive switch 215 is connected with the meshing push rod 601 through the PLC controller, when the push frame 203 is driven to slide to the left by the lead screw 205, the chemical fiber raw yarn is pushed to the left to be in a bundle shape, when the inductive switch 215 senses that it is close to the fixed frame 304, the meshing push rod 601 is driven to start, the meshing block 602 is meshed with the lead screw 205, at this time, the lead screw 205 rotates to make the sliding frame 4 move away from the fixed frame 304 as a whole, at the same time, the push frame 203 continuously slides to the left to push the chemical fiber raw yarn bundle to the stretching unit 3.

[0034] The positioning frame 301 and the sliding frame 302 are both provided with the extension plates 305 arranged in the circumferential movement of the yarn winding frame 202, as shown in Figure 3 Any one of the extension plates 305 is provided with the pressure sensor 306, the end of the extension plate 305 is provided with the stop plate 307 extending away from the center of the lead screw 205, the chemical fiber raw yarn bundle pushed out by the push frame 203 is pushed to the extension plate 305 of the sliding frame 302, and the lower end is sleeved with the extension plate 305 of the positioning frame 301, then the linear module 303 is started to displace the sliding frame 302 to the upper positioning frame 301, the pressure sensor 306 senses the pressure when the chemical fiber raw yarn bundle is stretched, when the pressure sensor 306 disappears or rapidly decreases after being stretched to a certain degree, it indicates that the raw yarn bundle has completed the stretching test, at this time, the displacement distance of the linear module 303 is measured through the PLC controller, and each group of data is further analyzed.

[0035] In the embodiment, the motor 201, the linear module 303, the driving push rod 402, the pressure sensor 306, the inductive switch 215 and the meshing push rod 601 are connected with the PLC controller, so as to realize the automatic control of the whole detection equipment and improve the detection efficiency.

[0036] The working process of the chemical fiber raw yarn strength detection equipment is as follows: Initial preparation and dipping raw materials: the equipment is started, the driving push rod 402 is driven to move, and the driving rack 401 is pushed out. The motor 201 rotates forward (clockwise), and the wire winding frame 202 is rotated through the one-way bearing 206. When the wire winding rod 208 provided with the contact tooth 211 is rotated to mesh with the driving rack 401, the driving gear 212 is driven to rotate 180°, so that the contact tooth 211 is turned over to the vertical downward state. When the wire winding rod 208 is rotated to the lower side, the contact tooth 211 on it is dipped into the hot melt tank to dip the molten chemical fiber raw material, and the fiber is drawn when the wire winding frame 202 continuously rotates; then the driving push rod 402 is reset, so that the contact tooth 211 is reset to one end towards the center of the output shaft 204; Automatic winding: the motor 201 continuously rotates forward, driving the wire winding frame 202 and the push frame 203 connected with the nut 207 through the lead screw 205 to rotate synchronously. The drawn chemical fiber raw wire is continuously and neatly wound on the plurality of wire winding rods 208. The encoder built-in the motor 201 or the connected PLC controller accurately counts the number of winding turns.

[0037] Switching the wire pushing mode: when the number of winding turns reaches the preset value, the motor 201 stops and then reverses (counterclockwise). At this time, the driving push rod 402 pushes out the driving rack 401 again, the one-way bearing 206 is disengaged, the output shaft 204 idles, and the wire winding frame 202 can be kept stationary through the reverse limiting of the driving rack 401. The reversed output shaft 204 drives the lead screw 205 to rotate.

[0038] Pushing out the wire coil: the rotating lead screw 205 drives the push frame 203 to move axially to the left through cooperation with the nut 207. The guide plate 209 and the guide groove 210 on the push frame 203 slide along the wire winding rod 208, and the formed wire coil is smoothly pushed out from the wire winding rod 208.

[0039] Wire coil transfer and positioning: the push frame 203 continuously moves to the left, pushing the wire coil to the stretching unit 3. When the inductive switch 215 on the push frame 203 detects the approach of the fixed frame 304, the PLC controller triggers the meshing push rod 601 to move, so that the meshing block 602 meshes with the lead screw 205. The meshing force pushes the entire sliding frame 4 to move to the right along the guide rail 5, so that the end of the wire winding rod 208 slightly moves away from above the extension plate 305 of the fixed frame 301, ensuring that the wire coil is accurately pushed and sleeved on the extension plate 305 of the positioning frame 301 and the sliding frame 302, and is prevented from falling off by the stop plate 307.

[0040] Tensile strength test: the linear module 303 is started, the sliding frame 302 is driven to move upward, and the chemical fiber filament bundle wrapped on the two extension plates 305 is stretched. The pressure sensor 306 monitors the stretching force in real time, and the displacement sensor of the linear module 303 records the stretching length. When the filament bundle breaks, the reading of the pressure sensor 306 drops sharply, and the PLC controller records the maximum tensile force and displacement data at the breaking point, and calculates the tensile strength of the chemical fiber filament according to the data.

[0041] Device reset: after the test is completed, all moving parts such as the linear module 303, the motor 201, and the driving push rod 402 are reset, and are ready for the next detection cycle.

[0042] A chemical fiber filament strength detection device detects the detection process of the chemical fiber filament, and the process is as follows: S1: the motor 201 rotates to drive the winding frame 202 to rotate through the one-way bearing 206, and the push frame 203 rotates synchronously with the winding frame 202, the molten chemical fiber raw material is dipped by any winding rod 208 to perform fiber drawing, and with the increase of the winding number of the winding frame 202, the chemical fiber filament is wound on the winding frame 202; S2: the motor 201 records the winding number of the winding frame 202, when the winding number reaches the standard, the motor 201 stops rotating, and the output shaft 204 reversely rotates, at this time the output shaft 204 reversely rotates with the winding frame 202 through the one-way bearing 206, that is, the winding frame 202 is in a static state, and the push frame 203 slides relative to the winding frame 202 after the lead screw 205 reversely rotates with the output shaft 204; S3: the push frame 203 pushes the chemical fiber filament wound on the winding rod 208 of the winding frame 202 to the side close to the stretching unit 3 through the guide plate 209 and the guide groove 210; S4: the push frame 203 continues to drive to push the chemical fiber filament to the positioning frame 301 and the sliding frame 302 of the stretching unit 3, at this time the chemical fiber filament forms a bundle and is wrapped on the positioning frame 301 and the sliding frame 302; S5: the sliding frame 302 is driven to slide relative to the positioning frame 301 by the linear module 303 until the chemical fiber filament bundle breaks, and the tensile strength of the chemical fiber filament is determined by the displacement distance of the linear module 303.

[0043] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for testing the strength of synthetic fiber precursor yarns, characterized in that: It includes a base (1), a winding unit (2) located on one side of the base (1), and a stretching unit (3) located on the other side of the base (1). The winding unit (2) includes a motor (201), a winding frame (202), and a pusher (203) that is slidably mounted on the winding frame (202). The stretching unit (3) includes a positioning frame (301) and a sliding frame (302). The base (1) is provided with a linear module (303) for driving the sliding frame (302) to move relative to the positioning frame (301). The motor (201) includes an output shaft (204) that cooperates with the winding frame (202) and a lead screw (205) connected to the output shaft (204). A one-way bearing (206) is provided between the winding frame (202) and the output shaft (204). A nut (207) that cooperates with the lead screw (205) is provided on the push frame (203). The output shaft (204) can switch between forward and reverse rotation to achieve synchronous rotation of the winding frame (202) and the push frame (203) or to allow the push frame (203) to move laterally relative to the winding frame (202) to push the wire roll onto the stretching unit (3).

2. The chemical fiber filament strength testing device according to claim 1, characterized in that: The winding frame (202) includes a plurality of winding rods (208) arranged around the circumference, and the push frame (203) is provided with a guide plate (209) that cooperates with the winding rods (208).

3. The chemical fiber filament strength testing device according to claim 2, characterized in that: The guide plate (209) is provided with a guide groove (210) that cooperates with the winding screw (208).

4. The chemical fiber filament strength testing device according to claim 2, characterized in that: Any of the aforementioned winding rods (208) is rotatably mounted on the winding frame (202), and is provided with a plurality of contact teeth (211) that can contact the molten raw material. The other end of the winding rod (208) is provided with a drive gear (212), which drives the winding rod (208) to rotate so as to achieve contact or non-disengagement between the contact teeth (211) and the molten raw material.

5. The chemical fiber filament strength testing device according to claim 4, characterized in that: The winding unit (2) includes a sliding frame (4) for fixing the motor (201), and the sliding frame (4) is provided with a driving rack (401) that cooperates with the driving gear (212). A reset torsion spring is provided between the driving gear (212) and the winding frame (202).

6. The chemical fiber filament strength testing device according to claim 5, characterized in that: The sliding frame (4) is provided with a drive push rod (402) connected to the drive rack (401).

7. The chemical fiber filament strength testing device according to claim 5, characterized in that: The drive gear (212) is provided with a limiting pin (213), and the winding frame (202) is provided with a limiting plate (214) that cooperates with the limiting pin (213).

8. The chemical fiber filament strength testing device according to claim 1, characterized in that: The sliding frame (4) is slidably mounted on the base (1) via symmetrically arranged guide rails (5). The tensioning unit (3) includes a fixed frame (304), and the lead screw (205) is guided through the fixed frame (304). The fixing frame (304) is provided with a meshing assembly that cooperates with the lead screw (205). The meshing assembly (6) includes a meshing push rod (601) and a meshing block (602). The meshing block (602) is provided with a thread that cooperates with the lead screw (205). The pusher (203) is equipped with an induction switch (215) that cooperates with the fixed frame (304).

9. The chemical fiber filament strength testing device according to claim 1, characterized in that: Both the positioning frame (301) and the sliding frame (302) are provided with an extension plate (305) placed within the circumference of the winding frame (202). A pressure sensor (306) is provided on any of the extension plates (305). A stop plate (307) extending away from the center of the lead screw (205) is provided at the end of the extension plate (305).

10. The testing process for testing chemical fiber raw materials using the chemical fiber raw material strength testing equipment as described in claim 3, characterized in that: The process is as follows: S1: The motor (201) rotates and drives the winding frame (202) to rotate through the one-way bearing (206). The push frame (203) rotates synchronously with the winding frame (202). The molten chemical fiber raw material is dipped into any winding rod (208) and then drawn into fibers. As the number of turns of the winding frame (202) increases, the chemical fiber is wound on the winding frame (202). S2: The motor (201) records the number of rotations of the winding frame (202). When the number of rotations reaches the target, the motor (201) stops rotating and causes the output shaft (204) to rotate in the opposite direction. At this time, the output shaft (204) rotates relative to the winding frame (202) through the one-way bearing (206), that is, the winding frame (202) is in a stationary state. The lead screw (205) drives the push frame (203) to slide relative to the winding frame (202) after the output shaft (204) reverses. S3: The pusher (203) pushes the chemical fiber raw filaments wound on the winding rod (208) of the winding frame (202) to the side close to the stretching unit (3) through the guide plate (209) and guide groove (210); S4: The pusher (203) continues to drive and pushes the chemical fiber filaments onto the positioning frame (301) and sliding frame (302) of the stretching unit (3). At this time, the chemical fiber filaments form a bundle and are sleeved on the positioning frame (301) and sliding frame (302). S5: The sliding frame (302) is driven by the linear module (303) to slide relative to the positioning frame (301) until the chemical fiber filament bundle breaks. The tensile strength of the chemical fiber filament is determined by the displacement distance of the linear module (303).

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