An industrial filament dry heat shrinkage tester

Abstract

The application discloses an industrial filament dry heat shrinkage tester, and belongs to the technical field of textile testing. Mainly including box body, placing assembly, heating frame, storage assembly, the storage assembly comprises: a fixed plate arranged on the placing assembly, the fixed plate and the pushed-out heating frame form a heating area for the industrial filament; at least two groups of vertical plates are installed on the fixed plate, a support is installed on the vertical plate, and an opening is arranged on the support; two groups of air cylinders are installed in the grooves, and a top plate is installed on the output end of the air cylinder; at least two groups of support plates are installed on the top plate, a round rod is installed on the support plate; at least two groups of fixed cylinders are installed at one end of the round rod, and a clamping groove is formed in the fixed cylinder. The industrial filament dry heat shrinkage tester can store most of the filaments in the heating area before heating, so that the filaments can be heated subsequently, and the heating area can be increased.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of textile testing, in particular to an industrial filament dry heat shrinkage tester. BACKGROUND

[0002] Industrial filaments are an important branch of the chemical fiber field, which are continuous filament fibers made through a spinning process, have a single or multifilament structure, and can be up to thousands of meters or even tens of thousands of meters in length. The industrial filaments have high strength, high modulus, wear resistance, and chemical corrosion resistance, and thus become core materials in the fields of transportation, construction, and safety protection.

[0003] In the production process of the industrial filaments, the dry heat shrinkage of the industrial filaments needs to be tested to ensure that the quality of the industrial filaments meets the specifications.

[0004] For example, a patent with the publication number CN114965552A discloses a polyester filament dry heat shrinkage tester and a testing method. The tester hangs the filaments through a filament hanging mechanism, controls a moving heating mechanism to move to the filament hanging mechanism, controls a filament heating bin to heat the filaments, and collects the length displacement changes of the filaments at corresponding temperatures through an image acquisition module to obtain the dry heat shrinkage of the filaments.

[0005] However, the above patent can test the dry heat shrinkage of the filaments, but when the filaments are heated, only the filaments located below the heating bin can be heated, and the filaments hanging on one side cannot be heated, which leads to a small heating area and thus causes the shrinkage rate of the heated part to be inconsistent with that of the unheated part, and the real shrinkage performance of the filaments cannot be reflected.

[0006] Therefore, it is necessary to provide an industrial filament dry heat shrinkage tester to solve the above problems.

[0007] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background technology of the concept of the present application, and therefore, it can contain information that does not constitute prior art. SUMMARY

[0008] Based on the above problems in the prior art, the present application aims to provide an industrial filament dry heat shrinkage tester to increase the heating area.

[0009] The technical scheme adopted by the application to solve its technical problems is: an industrial filament dry heat shrinkage tester, comprising a box body; a placing assembly arranged on the box body, the placing assembly having a placing rack with a groove formed therein; a heating frame adapted to be accommodated in the interior of the box body and pushed out of the box body and located above the groove; an accommodating assembly arranged on the box body, the accommodating assembly comprising: a fixed plate arranged on the placing assembly, the fixed plate and the pushed-out heating frame forming a heating area for the industrial filament; at least two groups of vertical plates mounted on the fixed plate, the vertical plates being provided with a support mounted thereon, and the support being provided with an opening; two groups of air cylinders mounted in the interior of the groove, the output ends of the air cylinders being provided with a top plate; at least two groups of support plates mounted on the top plate, the support plates being provided with a round rod mounted thereon; and at least two groups of fixed cylinders mounted on one end of the round rod, the fixed cylinders being provided with a clamping groove.

[0010] Further, at least two groups of drive gears are rotatably mounted on the round rod, and a plurality of drive racks are mounted on the fixed plate, the drive gears and the drive racks being meshingly connected.

[0011] Further, a horizontal plate is mounted on the drive gear, the horizontal plate being provided with a connecting rod, and the connecting rod being provided with a circular ring.

[0012] Further, the placing assembly comprises a connecting plate mounted on one side of the placing rack, the connecting plate being provided with a roller, both ends of the placing rack are provided with at least two groups of pneumatic clamps, and the other side of the placing rack is provided with at least two groups of encoders, the output ends of the encoders being fixedly provided with a rotating wheel.

[0013] Further, the other side of the placing rack is provided with at least two groups of slides, the slides having a vertical part and a protruding part, the vertical part being located below the rotating wheel, the protruding part being located outside the rotating wheel, and the interior of the slide being provided with a sliding groove.

[0014] Further, the interior of the sliding groove is provided with a roller, the roller being provided with a connecting rod, the connecting rod being provided with a base, a square slot being provided through the base, a protruding block being mounted on the inner wall of the square slot, a clamping plate being slidably arranged on the protruding block, a screw rod being rotatably arranged on the clamping plate, and the screw rod being threadedly mounted on the base.

[0015] Further, a cross beam is mounted in the interior of the box body, a pad plate is mounted on the top of the cross beam, two groups of slides are mounted on the pad plate, a sliding plate is slidably arranged on the slide, and a drive motor is mounted on the bottom of the pad plate.

[0016] Further, the output end of the drive motor is fixedly provided with a driving gear, the bottom of the sliding plate is provided with a driven rack, and the driving gear and the driven rack are meshingly connected.

[0017] Further, the sliding plate is provided with a fixing seat, the upper end of the fixing seat is hinged to the heating frame, the heating frame is spliced by at least two groups of plates, the interior of the heating frame is provided with a graphene electric heating plate, the graphene electric heating plate is connected with an external power supply, and the heating frame and one end of the fixing plate are provided with baffles.

[0018] Further, the placing rack is provided with a tension assembly, the tension assembly comprises at least two groups of supporting seats installed on the placing rack, one side of the supporting seat is provided with an electric cylinder, the output end of the electric cylinder is provided with an upper pressing plate, the upper pressing plate is located above the supporting seat, and the upper pressing plate and the supporting seat are provided with rubber pads.

[0019] The beneficial effects of the present application are: the industrial filament dry heat shrinkage rate tester provided by the present application can accommodate most of the filaments to the heating area before heating, so as to heat subsequently, and can increase the heating area.

[0020] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0022] Figure 1 It is a whole schematic view of an industrial filament dry heat shrinkage rate tester in the present application;

[0023] Figure 2 It is Figure 1 It is a whole schematic view of another view in the present application;

[0024] Figure 3 It is Figure 2 It is an enlarged schematic view of A in the present application;

[0025] Figure 4 It is Figure 3 It is an enlarged schematic view of B in the present application;

[0026] Figure 5 It is Figure 1 It is a whole structural schematic view of part in the present application;

[0027] Figure 6 It is Figure 1 It is a whole schematic view of another state of part in the present application;

[0028] Figure 7 It is Figure 6 It is an enlarged schematic view of C in the present application;

[0029] Figure 8 is Figure 7 enlarged view of D in FIG.

[0030] Figure 9 is Figure 1 another perspective view of another state in FIG.

[0031] Figure 10 is Figure 9 enlarged view of E in FIG.

[0032] Figure 11 is Figure 9 enlarged view of F in FIG.

[0033] Figure 12 is Figure 6 partial overall view of another state in FIG.

[0034] In the drawings:

[0035] 1, box body;

[0036] 2, placing assembly; 21, placing rack; 22, groove; 23, pneumatic clamp; 24, roller body; 25, connecting plate; 26, encoder; 27, rotating wheel;

[0037] 3, storage assembly; 31, baffle; 32, fixed plate; 33, support plate; 34, fixed cylinder; 341, clamping groove; 35, driving rack; 36, round rod; 37, driving gear; 38, top plate; 39, air cylinder; 310, vertical plate; 311, support column; 312, cross plate; 313, connecting rod; 314, circular ring;

[0038] 4, tensioning assembly; 41, slide; 42, base; 421, square groove; 43, screw; 44, clamping plate; 45, protruding part; 46, sliding groove; 47, support seat; 48, rubber pad; 49, electric cylinder; 410, upper pressing plate;

[0039] 5, heating assembly; 51, heating frame; 501, cover plate; 52, fixed seat; 53, fixed box; 531, servo motor; 532, screw rod; 533, sliding seat; 534, guide rod; 535, connecting block; 54, pad; 541, cross beam; 55, graphene electric heating plate; 56, driving gear; 57, driven rack; 58, sliding plate; 59, slide rail. DETAILED DESCRIPTION

[0040] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0042] Example 1: As Figures 1-3 As shown, this application provides an industrial filament dry heat shrinkage rate tester, including a housing 1, on which a placement component 2 is provided, the placement component 2 being used to place industrial filaments, specifically;

[0043] The placement assembly 2 includes a placement rack 21 fixedly installed on one side of the housing 1. A connecting plate 25 is fixedly installed on one side of the placement rack 21. A roller 24 is provided on the connecting plate 25. The roller 24 has multiple sets of partitions to facilitate the winding and placement of different filaments to be tested by the roller 24.

[0044] Multiple sets of pneumatic clamps 23 are fixedly installed at both ends of the placement rack 21. The pneumatic clamps 23 are based on existing technology, and their specific structure and principle will not be described in detail here. This is to facilitate the passing of the filament through the pneumatic clamps 23 and to clamp it through the pneumatic clamps 23.

[0045] Multiple encoders 26 are fixedly installed on the other side of the placement rack 21. The output end of the encoder 26 is fixedly fitted with a rotating wheel 27. The rotating wheel 27 is provided with a ring track for the long filament to pass through. At the same time, the encoder 26 is connected to the PLC control system so that the long filament passing through the pneumatic clamp 23 can be placed on the ring track of the rotating wheel 27. A weight can be placed on the long filament at one end passing through the rotating wheel 27. At this time, the long filament is in a drooping state under the action of gravity and is in contact with the rotating wheel 27.

[0046] It should be noted that the encoder 26 is a device that converts mechanical displacement (such as rotation angle and linear displacement) into electrical signals. It is a type of distance sensor. When the filament is heated and shrinks, the filament synchronously drives the rotating wheel 27 to rotate due to friction. The encoder 26 and the control system work together to convert the rotation angle into length data and upload the data.

[0047] A heating component 5 is installed inside the housing 1, which is used for heating the filament;

[0048] like Figures 5-6 and Figures 9-11As shown, the heating assembly 5 comprises a cross beam 541 fixedly installed inside the box body 1, a base plate 54 is fixedly installed on the top of the cross beam 541, two groups of slide rails 59 are fixedly installed on the base plate 54, a sliding plate 58 is slidingly arranged on the slide rails 59, a drive motor (not marked in the figure) is fixedly installed on the bottom of the base plate 54, the output end of the drive motor is fixedly sleeved with a driving gear 56, and a driven rack 57 is fixedly installed on the bottom of the sliding plate 58, and the driven rack 57 and the driving gear 56 are engagedly connected;

[0049] Further, under the driving of the drive motor, the driving gear 56 is driven to rotate, thereby driving the driven rack 57 to move, and further driving the sliding plate 58 to move along the axis of the slide rail 59;

[0050] A pair of upper and lower heating frames 51 (as shown in Figure 5 ) are arranged on the sliding plate 58, the heating frame 51 is spliced by a plurality of plates, and the two heating frames 51 are hingedly connected to each other;

[0051] The lower heating frame 51 is installed on the sliding plate 58, and the graphite electric heating plate 55 is arranged in the inside of the two heating frames 51, the graphite electric heating plate 55 is connected with the power supply outside, so as to be powered under the driving of the power supply, and then the graphite electric heating plate 55 is heated;

[0052] The two sides of the two heating frames 51 are fixedly installed with cover plates 501, the two cover plates 501 are fixedly installed with a connecting block 535, the lower connecting block 535 is fixedly installed with a fixed box 53, the inside of the fixed box 53 is rotatably installed with a lead screw 532, the lead screw 532 is threadedly installed with a sliding seat 533, and the sliding seat 533 is fixedly connected with the upper connecting block 535;

[0053] Continuing to refer to Figure 11 , the inside of the fixed box 53 is fixedly installed with a guide rod 534, the sliding seat 533 is slidingly arranged on the guide rod 534, and the fixed box 53 is fixedly installed with a servo motor 531, the output end of the servo motor 531 and one end of the lead screw 532 are commonly provided with a synchronous belt set (not shown in the figure), thereby driving the lead screw 532 to rotate under the driving of the servo motor 531, thereby driving the sliding seat 533 to move up and down along the axis of the lead screw 532, and limiting the moving direction under the action of the guide rod 534, thereby driving the upper heating frame 51 to move close to or away from the lower heating frame 51;

[0054] An opening (not marked in the figure) is formed in one side of the box body 1, a recess 22 is formed in the placing rack 21, after the long filaments are placed, part of the long filaments are located above the recess 22 and between the two heating frames 51, and one end of the two slide rails 59 penetrates through the opening and extends into the inside of the recess 22, so that the sliding plate 58 enters the recess 22 from the opening;

[0055] In the initial state, the upper heating frame 51 is slightly away from the lower heating frame 51, so that when the slide plate 58 moves, the two groups of heating frames 51 are driven to move out of the opening and into the groove 22, until the filament is located between the two groups of heating frames 51, the servo motor 531 is started to drive the upper heating frame 51 to close to the lower heating frame 51 to form a heating cavity, and then the filament can be heated;

[0056] It should be noted that one end of the two groups of heating frames 51 is provided with a baffle 31, so as to close the end face during closing, thereby reducing heat loss;

[0057] As described above, when in use, the yarn cylinder with the filament is placed on the roller body 24, the filament is drawn out and passes through the two groups of pneumatic clamps 23 and the rotating wheel 27 in turn, then the weight is assembled at one end of the filament passing through the rotating wheel 27, at this time the filament is in a drooping state under the action of gravity and is attached to the rotating wheel 27, the driving motor is started, the slide plate 58 is driven to move through the driving gear 56 and the driven rack 57, thereby driving the two groups of heating frames 51 to move out of the opening and into the groove 22, when the filament is located between the two groups of heating frames 51, the servo motor 531 is started to drive the lead screw 532 to rotate through the synchronous belt set, thereby driving the sliding seat 533 to move downward, and further driving the upper heating frame 51 to move downward to cover the filament.

[0058] Then the graphene electric heating plate 55 is powered on to heat the filament, at this time the filament shrinks under the action of heat, the filament drives the rotating wheel 27 to rotate synchronously under the action of friction, and the angle of rotation of the rotating wheel 27 is converted into length data through the cooperation of the encoder 26 and the control system, and the data is uploaded.

[0059] Example two: although the above process can realize the dry heat shrinkage rate test of the filament, only the part of the filament located below the heating frame 51 can be heated when the filament is heated, and the filament hanging on one side cannot be heated, which leads to a small heating area, thereby leading to inconsistent shrinkage rate ratio between the heated part and the unheated part, and cannot reflect the real shrinkage performance of the filament;

[0060] In order to solve this problem, as shown in Figures 6-8 The receiving assembly 3 is arranged on the placing assembly 2 and is suitable for receiving the filament;

[0061] The receiving assembly 3 comprises a fixed plate 32 fixedly installed at the groove 22, a plurality of vertical plates 310 are fixedly installed on the fixed plate 32, a support 311 is fixedly installed on the vertical plate 310, and a notch (not marked in the figure) is formed in the support 311, so as to guide the filament through the notch;

[0062] The bottom wall of the groove 22 is fixedly installed with two groups of air cylinders 39, the output ends of the two groups of air cylinders 39 are fixedly installed with top plates 38, the top of the top plate 38 is fixedly installed with multiple groups of supporting plates 33, one end of the supporting plate 33 extends out of the top of the fixed plate 32, and the supporting plate 33 slidably penetrates the fixed plate 32;

[0063] It should be noted that, along Figure 6 From left to right, one supporting plate 33 is arranged between every two vertical plates 310, so that when the top plate 38 rises, the height difference between the supporting plate 33 and the vertical plate 310 is generated, and a wave shape is formed;

[0064] A round rod 36 is fixedly installed at one end of the supporting plate 33 extending out of the fixed plate 32, one end of the round rod 36 is fixedly installed with a fixed cylinder 34, and the fixed cylinder 34 is provided with a clamping groove 341 matched with the notch of the supporting column 311, so that the long filaments pass through the clamping groove 341 for guidance;

[0065] Continuing to refer to Figure 8 A drive gear 37 is fixedly sleeved on the round rod 36, multiple groups of drive racks 35 are fixedly installed at the top end of the fixed plate 32, the drive rack 35 and the drive gear 37 are meshingly connected, a horizontal plate 312 is fixedly installed on the drive gear 37, a connecting rod 313 is fixedly installed on the horizontal plate 312, and a circular ring 314 is arranged at one end of the connecting rod 313 away from the horizontal plate 312;

[0066] The circular ring 314 is convenient for the long filaments to pass through, so that under the driving of the air cylinder 39, the top plate 38 drives multiple groups of supporting plates 33 to rise, drives the fixed cylinder 34 to rise, drives the long filaments in the clamping groove 341 to rise, and forms a height difference between the long filaments in the clamping groove 341 and the notch, so that the long filaments in the clamping groove 341 and the notch form a wave shape, so as to store the long filaments;

[0067] And in the process of rising, the drive gear 37 rotates along the axis of the round rod 36 under the action of the drive rack 35, so that the circular ring 314 rotates along the circumferential surface of the fixed cylinder 34 through the horizontal plate 312 and the connecting rod 313, so that the long filaments in the circular ring 314 rotate synchronously, since one end of the long filament has a weight, and the long filament is limited in the circular ring 314, in the process of rotating, the long filament will be wound on the outer circumferential surface of the fixed cylinder 34, so as to be stored, it should be noted that the circular ring 314 is located on the left side of the clamping groove 341, to avoid mechanical interference with the long filament when winding;

[0068] As Figures 2-3 shown, multiple groups of slides 41 are fixedly installed on one side of the placing rack 21, the slide 41 has a vertical part and a protruding part 45, the vertical part is located below the rotating wheel 27, the protruding part 45 is located at the outer circle of the rotating wheel 27, and a sliding groove 46 is formed in the inside of the slide 41;

[0069] The inside of the sliding groove 46 is provided with a roller (not shown in the figure), and the roller is provided with a connecting rod (not shown in the figure), and the connecting rod is fixedly installed with the base 42, and the base 42 is provided with a square groove 421 in penetration, so as to place the weight connected with the filament in the square groove 421;

[0070] The inner wall of the square groove 421 is slidably provided with a clamping plate 44, the clamping plate 44 is rotatably installed with a screw rod 43, and the screw rod 43 is threadedly installed on the base 42, so as to rotate the screw rod 43 to make it extend into the inside of the square groove 421, and drive the clamping plate 44 to extend into the inside of the square groove 421, and then clamp the weight in the square groove 421;

[0071] It should be noted that, in order to avoid the lower heating frame 51 interfering with the air cylinder 39 when the heating assembly 5 extends out, the lower heating frame 51 is removed and the upper heating frame 51 is retained, as shown in Figure 6 and Figure 11 The fixed seat 52 is fixedly installed on the sliding plate 58, the fixed seat 52 is hinged with the upper heating frame 51, and the fixed box 53 is fixedly connected with one end of the fixed seat 52,

[0072] As shown in Figure 12 One end of the fixed plate 32 is fixedly connected with the baffle 31, so that the heating frame 51 can cooperate with the fixed plate 32 to cover the filament during heating, forming a heating area to heat the filament, and the two groups of baffles 31 cover the end face, which reduces the heat loss during heating;

[0073] As described above, when placing the filament, it is sequentially threaded through a plurality of clamping grooves 341, a plurality of annular rings 314 and a plurality of notches of the support column 311, and then the weight and the filament are connected and placed in the square groove 421, and the screw rod 43 is rotated to drive the clamping plate 44 to clamp it;

[0074] Before heating, start the two groups of air cylinders 39, drive the plurality of support plates 33 to move upward through the top plate 38, so as to drive the plurality of fixed cylinders 34 to move, and cooperate with the plurality of support columns 311 to make the filament form a wave shape, and the plurality of annular rings 314 rotate under the cooperation of the drive gear 37 and the drive rack 35, so that the filament is wound and rolled on the fixed cylinder 34, and the weight is driven to move upward at the same time, so that the roller is driven to move in the sliding groove 46 from the vertical part to the protruding part 45 through the base 42, in this process, the filament will drive the rotating wheel 27 to rotate due to friction, at this time, the encoder 26 cooperates with the control system to convert the angle data into length data and upload and record;

[0075] When the roller enters the protruding portion 45, the synchronous belt drives the base 42 away from the rotating wheel 27, at this time the weight is also driven away from the rotating wheel 27, thereby separating the long filaments from the rotating wheel 27, and as the long filaments continue to be wound, the roller will continuously move upward in the sliding groove 46, until it moves to the terminal end, at this time the weight is located above the rotating wheel 27, at this time most of the long filaments will be stored in the recess 22, waiting for the heating assembly 5 to heat, thereby increasing the heating area of the long filaments;

[0076] After heating is completed, the cylinder 39 is retracted, a plurality of fixed cylinders 34 are driven downward by the top plate 38, thereby performing the unwinding operation on the long filaments, at this time the weight is driven to move in the sliding groove 46 by the base 42, from the protruding portion 45 to the vertical portion, when the weight moves to the vertical portion, the weight drives the long filaments to re-contact the rotating wheel 27, and as the weight continues to descend, the long filaments drive the rotating wheel 27 to continuously rotate, at this time the encoder 26 and the control system convert the angle data of rotation into length data and upload and record, thereby the difference between the two times of data can be calculated to obtain the shrinkage rate.

[0077] Embodiment three: a tensioning assembly 4 is arranged on the placing rack 21, which is used to control the speed of the long filaments when falling;

[0078] As shown in Figure 2 and Figure 4 , the tensioning assembly 4 includes a plurality of support seats 47 fixedly installed on the placing rack 21, one side of the support seat 47 is fixedly installed with an electric cylinder 49, the output end of the electric cylinder 49 is fixedly installed with an upper pressing plate 410, which is located above the support seat 47, so as to drive the upper pressing plate 410 to approach or move away from the support seat 47 under the drive of the electric cylinder 49;

[0079] Rubber pads 48 are arranged on the upper pressing plate 410 and the support seat 47, so that when the long filaments pass through the pneumatic clamp 23, they can be located on the rubber pad 48 on the support seat 47, and then the electric cylinder 49 is started to drive the upper pressing plate 410 to move downward to clamp the long filaments;

[0080] As described above, after the storage assembly 3 completes the storage of the long filaments, the electric cylinder 49 is started to drive the upper pressing plate 410 to move downward, thereby clamping the long filaments, after heating is completed, the electric cylinder 49 is started to drive the upper pressing plate 410 to slightly move upward, thereby slightly releasing the long filaments, so that the long filaments are still slightly clamped during the downward movement of the weight, thereby slowing down the falling speed of the weight, avoiding the fast falling speed of the weight causing the long filaments to break.

[0081] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An industrial filament dry heat shrinkage tester characterized by: Include: Box (1); The placement assembly (2) is provided on the box (1), the placement assembly (2) has a placement rack (21), and the recess (22) is opened on the placement rack (21); The heating frame (51) is suitable for being accommodated in the inside of the box (1), and the box (1) is pushed out and located above the recess (22); The storage assembly (3) is provided on the box (1), and the storage assembly (3) comprises: The fixed plate (32) is provided on the placement assembly (2), and the fixed plate (32) and the pushed-out heating frame (51) form a heating area of the industrial long filament; At least two groups of vertical plates (310) are installed on the fixed plate (32), the vertical plate (310) is installed on the vertical plate (310), and the vertical plate (310) is provided with an opening; Two groups of air cylinders (39) are installed in the inside of the recess (22), and the output end of the air cylinder (39) is installed with a top plate (38); At least two groups of support plates (33) are installed on the top plate (38), and the support plate (33) is installed on the support plate (33); At least two groups of fixed cylinders (34) are installed on one end of the round rod (36), and the fixed cylinder (34) is provided with a clamping groove (341); The placement assembly (2) comprises a connecting plate (25) installed on one side of the placement rack (21), the connecting plate (25) is provided with a roller (24), both ends of the placement rack (21) are provided with at least two groups of pneumatic clamps (23), and the other side of the placement rack (21) is provided with at least two groups of encoders (26), the output end of the encoder (26) is fixedly provided with a rotating wheel (27); The other side of the placement rack (21) is provided with at least two groups of slides (41), the slide (41) has a vertical part and a convex part (45), the vertical part is located below the rotating wheel (27), the convex part (45) is located outside the rotating wheel (27), and the inside of the slide (41) is provided with a sliding groove (46); The inside of the sliding groove (46) is provided with a roller, the roller is provided with a connecting rod, the connecting rod is installed on the base (42), the base (42) is provided with a square groove (421), the inner wall of the square groove (421) is installed with a lug, the lug is slidably provided with a clamping plate (44), the clamping plate (44) is rotatably installed on the screw rod (43), and the screw rod (43) is threadedly installed on the base (42).

2. An industrial filament dry heat shrinkage tester according to claim 1, characterized in that: The round rod (36) is rotatably installed with at least two groups of driving gears (37), and the fixed plate (32) is installed with a plurality of driving racks (35), the driving gear (37) and the driving rack (35) are connected.

3. An industrial filament dry heat shrinkage tester according to claim 2, characterized in that: The driving gear (37) is installed with a horizontal plate (312), the horizontal plate (312) is installed with a connecting rod (313), and the connecting rod (313) is installed with a circular ring (314).

4. An industrial filament dry heat shrinkage tester according to claim 3, characterized in that: The box (1) is internally provided with a crossbeam (541), the top of the crossbeam (541) is provided with a base plate (54), the base plate (54) is provided with two groups of slide rails (59), the slide rails (59) are slidably provided with a sliding plate (58), and the bottom of the base plate (54) is provided with a driving motor.

5. An industrial filament dry heat shrinkage tester according to claim 4, wherein: The output end of the driving motor is fixedly provided with a driving gear (56), the bottom of the sliding plate (58) is provided with a driven rack (57), and the driven rack (57) and the driving gear (56) are in meshing connection.

6. An industrial filament dry heat shrinkage tester according to claim 5, characterized in that: The sliding plate (58) is provided with a fixing seat (52), the upper end of the fixing seat (52) is hingedly connected with the heating frame (51), the heating frame (51) is formed by splicing at least two groups of plates, the inside of the heating frame (51) is provided with a graphene electric heating plate (55), the graphene electric heating plate (55) is connected with an external power supply, and one end of the heating frame (51) and the fixing plate (32) is provided with a baffle (31).

7. An industrial filament dry heat shrinkage tester according to claim 1, wherein: The placing rack (21) is provided with a tensioning assembly (4), the tensioning assembly (4) comprises at least two groups of supporting seats (47) mounted on the placing rack (21), one side of the supporting seat (47) is provided with an electric cylinder (49), the output end of the electric cylinder (49) is provided with an upper pressing plate (410), the upper pressing plate (410) is located above the supporting seat (47), and the upper pressing plate (410) and the supporting seat (47) are provided with rubber pads (48).

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