Quality detection device for PVC (polyvinyl chloride) heat-shrinkable tube

Abstract

The invention relates to the technical field of detection devices, and discloses a PVC heat shrink tube quality detection device which comprises a base body, a fixing mechanism and a wear resistance testing mechanism, the upper end of the base body is provided with a first transmission mechanism used for longitudinally adjusting the position of the fixing mechanism, and a second transmission mechanism used for longitudinally adjusting the position of the fixing mechanism is arranged at the lower end of the base body; a rotatable thermal shrinkage mechanism for heating the PVC thermal shrinkage tube is arranged in the fixing mechanism and can transversely slide on the transmission mechanism I, a driving mechanism for driving the fixing mechanism to rotate is arranged at the side part of the fixing mechanism, and a height adjusting mechanism for driving the wear resistance testing mechanism to longitudinally move is arranged at the side part of the wear resistance testing mechanism. The top of the wear resistance testing mechanism is provided with a transmission mechanism II for driving the transverse position of the wear resistance testing mechanism to be adjusted, the heat shrink tube can be expanded through the fixing mechanism for wear resistance testing, and the heat shrink tube can be thermally shrunk through the heat shrink mechanism, so that the heat shrink tube in practical application can be tested.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, in particular to a PVC heat shrink tube quality detection device. Background Art

[0002] Heat shrink tubing is a special polyolefin heat shrink tubing. It's made of a high-quality, soft, cross-linked polyolefin outer layer and a hot-melt adhesive inner layer. The outer layer is insulated, corrosion-resistant, and wear-resistant, while the inner layer has a low melting point, waterproof seal, and high adhesion.

[0003] A search revealed a Chinese patent application with publication number CN220690726U, which discloses a heat shrink tubing wear resistance test device. By providing a clamping mechanism, two clamping plates can clamp the test object when the test object is placed on a carrier plate. The special-shaped fixtures on the clamping plates can be adjusted to suit different test objects, achieving a clamping effect that can adapt to different test objects and achieving stability and variability in clamping the test object. However, the following problems still exist:

[0004] 1. The heat shrink tubing is clamped by a special-shaped fixture, but it can only be pulled into a flat strip for testing. In fact, after the heat shrink tubing is put on the outside of the area to be wrapped, it needs to be heated. Heating can shrink the heat shrink tubing. The physical properties and wear resistance of the heat shrink tubing before and after shrinkage are different. The wear resistance of the heat shrink tubing before heating cannot be used to judge the wear resistance of the heat shrink tubing during specific use.

[0005] 2. The wear resistance of only one side of the heat shrink tubing can be tested. In fact, due to quality control issues during the production process, the wear resistance of each position of the heat shrink tubing is different. Wear resistance testing of only a single position is not reliable.

[0006] 3. The horizontal position of the grinder cannot be adjusted. In fact, the heat shrink tube is long and strip-shaped, and the horizontal position of each heat shrink tube is different. It is unreliable to test the wear resistance of only a single horizontal position.

[0007] 4. It does not have a heating function. If you need to heat and shrink the heat shrink tubing, you will need to use other equipment. Summary of the Invention

[0008] Technical problems solved

[0009] In view of the shortcomings of the existing technology, the present invention provides a PVC heat shrink tube quality detection device, which mainly solves the problems that the existing technology cannot detect the wear resistance of the heat shrink tube before and after heating and the detection position is too small.

[0010] Technical Solution

[0011] To achieve the above object, the present invention provides the following technical solutions:

[0012] A PVC heat shrink tube quality inspection device includes a base body, a fixing mechanism and a wear resistance testing mechanism. The upper end of the base body is provided with a transmission mechanism 1 for longitudinally adjusting the position of the fixing mechanism, and the fixing mechanism is provided with a rotatable heat shrink mechanism for heating the PVC heat shrink tube, and the heat shrink mechanism can slide laterally on the transmission mechanism 1, and the heat shrink mechanism is arranged at the center of the fixing mechanism. The side of the fixing mechanism is provided with a driving mechanism for driving its rotation, the side of the wear resistance testing mechanism is provided with a height adjustment mechanism for driving its longitudinal movement, and the top of the wear resistance testing mechanism is provided with a transmission mechanism 2 for driving its lateral position adjustment.

[0013] As a further solution of the present invention, a left column, a right column and a rear column are welded and fixed to the upper end of the base body, the transmission mechanism is arranged between the left column and the right column, and the height adjustment mechanism is arranged on one side of the rear column.

[0014] As a further solution of the present invention, the transmission mechanism includes a drive motor and a drive plate. The drive motor is detachably mounted on the upper end of the left column by bolts, and a bearing is installed at the bottom of the left column. The inner ring of the bearing is fixedly plugged with a threaded transmission rod. The output shaft of the drive motor is connected to the threaded transmission rod through a flat key, and a threaded hole is provided on the drive plate. The threaded transmission rod and the drive plate are connected through the matching threads of the threaded hole.

[0015] As a further solution of the present invention, a guide rod is welded and fixed to the inner side of the right column, and a guide hole is opened on the driving plate, and the guide rod passes through the guide hole on the driving plate.

[0016] As a further solution of the present invention, the fixing mechanism includes a fixed side plate, an arc-shaped fixing bar and a compression spring. The fixed side plate is welded and fixed to the upper end of the driving plate. The driving mechanism is composed of a second driving motor. The second driving motor is detachably mounted on one side of the fixed side plate by bolts, and the inner side of the fixed side plate is rotatably connected to a circular turntable through a bearing, and the output shaft of the second driving motor is connected to the circular turntable through a flat key.

[0017] As a further solution of the present invention, six groups of slide grooves are provided on the circular turntable, and the six groups of slide grooves are arranged in a circular array. A limiting slide seat is integrally formed on one side of the arc-shaped fixing strip. The arc-shaped fixing strip is slidably connected to the inner side of the circular turntable through the cooperation of the limiting slide seat and the slide groove, and the two ends of the compression spring are respectively welded and fixed to the slide groove and the limiting slide seat, and a limiting block is integrally formed on the outer side of one end of the arc-shaped fixing strip for limiting the PVC heat shrink tube.

[0018] As a further solution of the present invention, a second slide groove is provided on the driving plate, and the heat shrinkage mechanism includes a sliding side plate and a heating wire. The lower end of the sliding side plate is integrally formed with a limited slide seat 2, and the sliding side plate is slidably connected to the upper end of the driving plate through the limited slide seat 2 and the slide groove 2, and the inner side of the sliding side plate is rotatably connected to a support turntable that can support the ends of six groups of arc-shaped fixed strips through a bearing, and the heating wire is fixedly connected to the middle of the support turntable, and a conductive slip ring is installed on one side of the sliding side plate, the conductive slip ring and the heating wire are electrically connected, and the outer side of the heating wire is covered with a glass cover.

[0019] As a further solution of the present invention, the height adjustment mechanism includes an electric push rod, an extension block is integrally formed on one side of the rear column, the electric push rod is fixedly installed at the lower end of the extension block, and the second transmission mechanism is arranged at the piston end of the electric push rod.

[0020] As a further solution of the present invention, the second transmission mechanism includes a reciprocating motor and a mounting bar, the mounting bar is fixedly connected to the piston end of the electric push rod, the reciprocating motor is mounted on one side of the mounting bar by a bolt, the lower end of the mounting bar is slidably connected to a threaded seat, the inner side of the mounting bar is rotatably connected to a threaded drive shaft 2 through a second bearing, one end of the threaded drive shaft 2 is transmission-connected to the output shaft of the reciprocating motor through a flat key, and an elastic component with elasticity is provided at the lower end of the threaded seat, and the wear resistance testing mechanism is provided at the lower end of the elastic component.

[0021] As a further solution of the present invention, the elastic component includes a bent pipe and a mounting rod, the wear resistance testing mechanism is composed of an arc-shaped grinding seat, and the arc-shaped grinding seat is fixedly connected to the lower end of the mounting rod, and the mounting rod is slidably inserted into the lower end of the bent pipe, and a spring is installed in the bent pipe, and the two ends of the spring are respectively welded and fixed to the mounting rod and the bent pipe, and the bent pipe is welded and fixed to the lower end of the threaded seat.

[0022] Beneficial effects

[0023] Compared with the prior art, the present invention provides a PVC heat shrink tube quality detection device, which has the following beneficial effects:

[0024] 1. The present invention fixes the heat shrink tube by six groups of retractable arc-shaped fixing strips in the fixing mechanism. The arc-shaped fixing strips can cooperate with compression springs to expand and fix the heat shrink tube sleeved on the outside of the arc-shaped fixing strips. The arc-shaped fixing strips can be driven to rotate by the driving mechanism on the side and cooperate with the arc-shaped grinding seat on the upper part to grind the heat shrink tube around one circumference, thereby performing wear resistance testing, which solves the limitation of the existing technology that the heat shrink tube can only be pulled into a long strip for testing.

[0025] 2. The present invention provides a heat shrink mechanism on the other side of the fixing mechanism. The heat shrink mechanism can slide and adjust the position at the upper end of the driving plate. After the heating wire in the heat shrink mechanism is energized, it can heat and shrink the heat shrink tube sleeved on the outside of the arc-shaped fixing strip. In this way, the wear resistance of the heat shrink tube under a specific state can be tested, which solves the problem that the existing technology requires other equipment to cooperate if the heat shrink tube needs to be heated and shrunk.

[0026] 3. The present invention uses the support turntable on the heat shrink mechanism. After the heat shrink tube is put on the fixing mechanism, the heat shrink mechanism is first inserted into the fixing mechanism. The end of the arc-shaped fixing strip will be placed on the outside of the support turntable. The support turntable can support the end of the arc-shaped fixing strip to prevent the problem of insufficient fit during polishing due to excessive shrinkage force of the heat shrink tube after heating and shrinking, which may cause the end of the arc-shaped fixing strip to have too large a deformation.

[0027] 4. The heat shrink mechanism of the present invention can rotate on the side of the sliding side plate through the bearing. The heating wire is installed on the supporting turntable. The heating wire can rotate with the supporting turntable, and the conductive slip ring can supply power to the rotating heating wire. In this way, the heating wire can heat and shrink the heat shrink tube while following the rotation of the fixed mechanism, so that the heat shrink tube shrinks more evenly and the wear resistance test results are more accurate.

[0028] 5. The present invention drives the wear resistance testing mechanism to move down and stick to the upper wall of the fixed heat shrink tube through the electric push rod, and then drives the arc-shaped grinding seat to move back and forth in the horizontal direction through the reciprocating rotation of the reciprocating motor. The arc-shaped grinding seat can better stick to the upper wall of the heat shrink tube through the action of the spring in the elastic component, thereby performing wear resistance tests on various horizontal positions of the heat shrink tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the left side three-dimensional structure of a PVC heat shrink tube quality detection device proposed by the present invention;

[0030] Figure 2 This is a schematic diagram of the right side of a three-dimensional structure of a PVC heat shrink tube quality detection device proposed by the present invention;

[0031] Figure 3 This is a schematic diagram of the three-dimensional structure of the left side of the fixing mechanism of a PVC heat shrink tube quality inspection device proposed by the present invention;

[0032] Figure 4 This is a schematic diagram of the three-dimensional structure of the left side of the arc-shaped fixing bar of the PVC heat shrink tube quality inspection device proposed by the present invention;

[0033] Figure 5 This is a schematic diagram of the front three-dimensional structure of a sliding side plate of a PVC heat shrink tube quality inspection device proposed by the present invention;

[0034] Figure 6 This is a schematic diagram of the three-dimensional structure of the lower side of the transmission mechanism 2 of the PVC heat shrink tube quality inspection device proposed by the present invention.

[0035] In the figure: 100, base body; 101, left column; 102, right column; 103, rear column; 104, extension block; 200, fixing mechanism; 201, fixed side plate; 202, arc fixing strip; 203, circular turntable; 204, slideway 1; 205, limit slide 1; 206, compression spring; 207, limit block; 300, wear resistance testing mechanism; 400, transmission mechanism 1; 401, drive motor 1; 402, drive plate; 403, bearing 1; 404, threaded transmission rod 1; 405, threaded hole 1; 406, Guide rod; 407, guide hole; 408, slide groove 2; 500, heat shrink mechanism; 501, sliding side plate; 502, heating wire; 503, limit slide 2; 504, support turntable; 505, conductive slip ring; 506, glass cover; 600, drive mechanism; 700, height adjustment mechanism; 701, electric push rod; 800, transmission mechanism 2; 801, reciprocating motor; 802, mounting strip; 803, threaded seat; 804, bearing 2; 805, threaded drive shaft 2; 900, elastic component; 901, elbow; 902, mounting rod. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0037] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention include direct and indirect connections (couplings) unless otherwise specified. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0038] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0039] Reference Figures 1-6 A PVC heat shrink tube quality inspection device includes a base body 100, a fixing mechanism 200 and a wear resistance testing mechanism 300. The upper end of the base body 100 is provided with a transmission mechanism 400 for longitudinally adjusting the position of the fixing mechanism 200, and the fixing mechanism 200 is provided with a rotatable heat shrink mechanism 500 for heating the PVC heat shrink tube, and the heat shrink mechanism 500 can slide laterally on the transmission mechanism 400, and the heat shrink mechanism 500 is arranged at the center of the fixing mechanism 200. A driving mechanism 600 for driving its rotation is provided on the side of the fixing mechanism 200, a height adjustment mechanism 700 for driving its longitudinal movement is provided on the side of the wear resistance testing mechanism 300, and a transmission mechanism 2 800 for driving its lateral position adjustment is provided on the top of the wear resistance testing mechanism 300.

[0040] In particular, in the present invention, a left column 101, a right column 102 and a rear column 103 are welded and fixed to the upper end of the base body 100, a transmission mechanism 400 is arranged between the left column 101 and the right column 102, and a height adjustment mechanism 700 is arranged on one side of the rear column 103, and the heights of the left column 101, the right column 102 and the rear column 103 are all consistent.

[0041] When in use, the transmission mechanism 400 includes a driving motor 401 and a driving plate 402. The driving motor 401 is detachably mounted on the upper end of the left column 101 by bolts, and a bearing 403 is mounted on the bottom of the left column 101. The inner ring of the bearing 403 is fixedly plugged with a threaded transmission rod 404. The output shaft of the driving motor 401 is connected by a flat key and a threaded transmission rod 404, and a threaded hole 405 is provided on the driving plate 402. The threaded transmission rod 404 and the driving plate 402 are connected by matching threads of the threaded hole 405. The forward and reverse rotation of the driving motor 401 can drive the transmission mechanism 400 to move up and down, so that the fixing mechanism 200 is close to the wear resistance testing mechanism 300 for wear resistance testing.

[0042] In particular, in the present invention, a guide rod 406 is welded and fixed on the inner side of the right column 102, and a guide hole 407 is opened on the driving plate 402. The guide rod 406 passes through the guide hole 407 on the driving plate 402. The function of the guide rod 406 and the guide hole 407 is to cooperate with the transmission function of the threaded transmission rod 404 to make the movement of the driving plate 402 smoother.

[0043] When in use, the fixing mechanism 200 includes a fixed side plate 201, an arc-shaped fixing bar 202 and a compression spring 206. The fixed side plate 201 is welded and fixed to the upper end of the driving plate 402. The driving mechanism 600 is composed of a second driving motor. The second driving motor is detachably mounted on one side of the fixed side plate 201 by bolts, and the inner side of the fixed side plate 201 is rotatably connected to the circular turntable 203 through a bearing, and the output shaft of the second driving motor is connected to the circular turntable 203 through a flat key. The rotation of the second driving motor can drive the fixing mechanism 200 to rotate, so that after the fixing mechanism 200 is covered with a heat shrink tube, the wear resistance test is performed by rotating the wear resistance testing mechanism 300.

[0044] In particular, in the present invention, six groups of slide grooves 204 are provided on the circular turntable 203, and the six groups of slide grooves 204 are arranged in a ring array. A limited slide seat 205 is integrally formed on one side of the arc-shaped fixing strip 202. The arc-shaped fixing strip 202 is slidably connected to the inner side of the circular turntable 203 through the cooperation of the limited slide seat 205 and the slide groove 204, and the two ends of the compression spring 206 are respectively welded and fixed to the slide groove 204 and the limited slide seat 205, and the arc-shaped fixing strip 202 is slidably connected to the inner side of the circular turntable 203. A limiting block 207 for limiting the position of the PVC heat shrink tube is integrally formed on the outer side of one end of the fixing strip 202. The slide groove 204 and the limiting slide seat 205 can prevent the arc-shaped fixing strip 202 from falling off. The heat shrink tube is sleeved on the six groups of arc-shaped fixing strips 202. The arc-shaped fixing strips 202 will expand the PVC heat shrink tube through the elastic force of the compression spring 206, and after the heat shrink tube shrinks, the compression spring 206 can deform to reserve space for the deformation of the heat shrink tube.

[0045] When in use, the driving plate 402 is provided with a second slide groove 408, the heat shrink mechanism 500 includes a sliding side plate 501 and a heating wire 502, the lower end of the sliding side plate 501 is integrally formed with a limited slide seat 503, the sliding side plate 501 is slidably connected to the upper end of the driving plate 402 through the limited slide seat 503 and the second slide groove 408, and the inner side of the sliding side plate 501 is rotatably connected to a support turntable 5 that can support the ends of the six groups of arc-shaped fixed strips 202 through a bearing. 04, and the heating wire 502 is fixedly connected to the middle of the supporting turntable 504, and a conductive slip ring 505 is installed on one side of the sliding side plate 501, the conductive slip ring 505 and the heating wire 502 are electrically connected, and the outer side of the heating wire 502 is covered with a glass cover 506, the heating wire 502 can heat the heat shrink tube covered on the outside while rotating, so that the heat shrink tube shrinks, so that the wear resistance testing mechanism 300 can test the wear resistance of the heat shrink tube during operation;

[0046] In particular, in the present invention, the height adjustment mechanism 700 includes an electric push rod 701. An extension block 104 is integrally formed on one side of the rear column 103. The electric push rod 701 is fixedly mounted on the lower end of the extension block 104, and the second transmission mechanism 800 is disposed at the piston end of the electric push rod 701. The electric push rod 701 can push the second transmission mechanism 800 downward, cooperating with the first transmission mechanism 400 to adjust the longitudinal position of the entire device and change the distance between the fixing mechanism 200 and the wear resistance testing mechanism 300.

[0047] When in use, the transmission mechanism 2 800 includes a reciprocating motor 801 and a mounting bar 802. The mounting bar 802 is fixedly connected to the piston end of the electric push rod 701. The reciprocating motor 801 is mounted on one side of the mounting bar 802 by a bolt. The lower end of the mounting bar 802 is slidably connected to a threaded seat 803. The inner side of the mounting bar 802 is rotatably connected to a threaded drive shaft 2 805 through a bearing 2 804. One end of the threaded drive shaft 2 805 is transmission-connected to the output shaft of the reciprocating motor 801 through a flat key, and an elastic component 900 with elasticity is provided at the lower end of the threaded seat 803. The wear resistance testing mechanism 300 is provided at the lower end of the elastic component 900. The forward and reverse rotation of the reciprocating motor 801 can drive the wear resistance testing mechanism 300 to move laterally, thereby changing the relative positions of the fixed heat shrink tube and the arc-shaped grinding seat, and finally achieving grinding without dead angles.

[0048] In particular, in the present invention, the elastic component 900 includes a bent tube 901 and a mounting rod 902, the wear resistance testing mechanism 300 is composed of an arc-shaped grinding seat, and the arc-shaped grinding seat is fixedly connected to the lower end of the mounting rod 902, and the mounting rod 902 is slidably inserted into the lower end of the bent tube 901, and a spring is installed in the bent tube 901, and the two ends of the spring are respectively welded to the mounting rod 902 and the bent tube 901, and the bent tube 901 is welded and fixed to the lower end of the threaded seat 803. The spring in the elastic component 900 can make the wear resistance testing mechanism 300 better fit the upper wall of the heat shrink tube, thereby performing wear resistance testing on various lateral positions of the heat shrink tube;

[0049] The present invention is divided into the following steps when used:

[0050] S1: First, control the electric push rod 701 and the drive motor 1 401 to expand the longitudinal distance between the fixing mechanism 200 and the wear resistance testing mechanism 300 to reserve space for the subsequent installation of the heat shrink tube;

[0051] S2: Manually move the sliding side plate 501 to completely pull the heat shrink mechanism 500 out of the fixing mechanism 200, after which the heat shrink tube can be installed;

[0052] S3: Gently hold one end of the six arc-shaped fixing bars 202 close to the circular turntable 203 to shrink the arc-shaped fixing bars 202 inward. Then, use your other hand to put the heat shrink tubing on the other end of the six arc-shaped fixing bars 202, gradually putting the heat shrink tubing completely on the outside of the six arc-shaped fixing bars 202, and then slowly release your hand.

[0053] S4: At this time, the electric push rod 701 and the drive motor 1 401 are controlled to reduce the longitudinal distance between the fixing mechanism 200 and the wear resistance testing mechanism 300, so that the fixed heat shrink tube is attached to the arc-shaped grinding seat under the action of the elastic component 900 for grinding;

[0054] S5: Start the second drive motor in the drive mechanism 600 to rotate the fixing mechanism 200, and immediately start the reciprocating motor 801 to grind the heat shrink tube fixed on the outside of the fixing mechanism 200 back and forth. After grinding for a period of time, the heat shrink tube can be removed for observation after the temperature cools down.

[0055] S6: Control the electric push rod 701 and the drive motor 1 401 again, thereby expanding the longitudinal distance between the fixing mechanism 200 and the wear resistance testing mechanism 300 to reserve space for the subsequent reinstallation of the heat shrink tube;

[0056] S7: After the new heat shrink tube is installed, the heat shrink mechanism 500 is inserted into the fixing mechanism 200, the heating wire 502 is turned on to heat, and the end of the arc-shaped fixing bar 202 is supported by the support turntable 504 to prevent the arc-shaped fixing bar 202 from excessive deformation;

[0057] S8: Control the electric push rod 701 and the drive motor 1 401 again to reduce the longitudinal distance between the fixing mechanism 200 and the wear resistance testing mechanism 300, so that the fixed and heat-shrunk heat shrink tube is attached to the arc-shaped grinding seat under the action of the elastic component 900 for grinding;

[0058] S9: The heating wire 502 is kept on during grinding to prevent the heat shrink tube from not being completely shrunk. After grinding, the heating wire 502 and the drive motor 2 in the drive mechanism 600 are turned off at the same time. After cooling for a period of time, the heat shrink tube is removed and the wear resistance of the shrunk heat shrink tube is observed.

[0059] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A PVC heat shrink tube quality inspection device, comprising a base body (100), a fixing mechanism (200) and a wear resistance testing mechanism (300), characterized in that: The upper end of the base body (100) is provided with a transmission mechanism (400) for longitudinally adjusting the position of the fixing mechanism (200), and the fixing mechanism (200) is provided with a rotatable heat shrinking mechanism (500) for heating the PVC heat shrinking tube, and the heat shrinking mechanism (500) can slide laterally on the transmission mechanism (400), and the heat shrinking mechanism (500) is provided at the center of the fixing mechanism (200), and the side of the fixing mechanism (200) is provided with a driving mechanism (600) for driving its rotation, and the side of the wear resistance testing mechanism (300) is provided with a height adjustment mechanism (700) for driving its longitudinal movement, and the top of the wear resistance testing mechanism (300) is provided with a transmission mechanism (800) for driving its lateral position adjustment.

2. A PVC heat shrink tube quality detection device according to claim 1, characterized in that: A left column (101), a right column (102) and a rear column (103) are welded and fixed to the upper end of the base body (100); the transmission mechanism (400) is arranged between the left column (101) and the right column (102); and the height adjustment mechanism (700) is arranged on one side of the rear column (103).

3. A PVC heat shrink tube quality detection device according to claim 2, characterized in that: The transmission mechanism (400) comprises a driving motor (401) and a driving plate (402). The driving motor (401) is detachably mounted on the upper end of the left column (101) by means of bolts, and a bearing (403) is mounted on the bottom of the left column (101). A threaded transmission rod (404) is fixedly inserted into the inner ring of the bearing (403). The output shaft of the driving motor (401) is connected to the threaded transmission rod (404) by means of a flat key, and a threaded hole (405) is provided on the driving plate (402). The threaded transmission rod (404) and the driving plate (402) are connected by means of matching threads of the threaded hole (405).

4. A PVC heat shrink tube quality detection device according to claim 3, characterized in that: A guide rod (406) is welded and fixed on the inner side of the right upright column (102), and a guide hole (407) is opened on the driving plate (402). The guide rod (406) passes through the guide hole (407) on the driving plate (402).

5. A PVC heat shrink tube quality detection device according to claim 3, characterized in that: The fixing mechanism (200) comprises a fixing side plate (201), an arc-shaped fixing strip (202) and a compression spring (206); the fixing side plate (201) is welded and fixed to the upper end of the driving plate (402); the driving mechanism (600) is composed of a second driving motor; the second driving motor is detachably mounted on one side of the fixing side plate (201) via bolts; the inner side of the fixing side plate (201) is rotatably connected to a circular turntable (203) via a bearing; and the output shaft of the second driving motor is transmission-connected to the circular turntable (203) via a flat key.

6. A PVC heat shrink tube quality detection device according to claim 5, characterized in that: The circular turntable (203) is provided with six groups of slide grooves (204), which are arranged in a ring array. A limiting slide seat (205) is integrally formed on one side of the arc-shaped fixing strip (202). The arc-shaped fixing strip (202) is slidably connected to the inner side of the circular turntable (203) through the cooperation of the limiting slide seat (205) and the slide groove (204), and the two ends of the compression spring (206) are respectively welded and fixed to the slide groove (204) and the limiting slide seat (205), and a limiting block (207) for limiting the PVC heat shrink tube is integrally formed on the outer side of one end of the arc-shaped fixing strip (202).

7. A PVC heat shrink tube quality detection device according to claim 5, characterized in that: The driving plate (402) is provided with a second slide groove (408), and the heat shrinking mechanism (500) includes a sliding side plate (501) and a heating wire (502). The lower end of the sliding side plate (501) is integrally formed with a second limiting slide seat (503). The sliding side plate (501) is slidably connected to the upper end of the driving plate (402) through the second limiting slide seat (503) and the second slide groove (408), and the inner portion of the sliding side plate (501) is provided with a second limiting slide seat (503). The side of the sliding side plate (501) is rotatably connected to a support turntable (504) capable of supporting the ends of the six groups of arc-shaped fixed bars (202) through a bearing, and the heating wire (502) is fixedly connected to the middle of the support turntable (504), and a conductive slip ring (505) is installed on one side of the sliding side plate (501), the conductive slip ring (505) and the heating wire (502) are electrically connected, and the outer side of the heating wire (502) is covered with a glass cover (506).

8. A PVC heat shrink tube quality detection device according to claim 2, characterized in that: The height adjustment mechanism (700) includes an electric push rod (701), an extension block (104) is integrally formed on one side of the rear column (103), the electric push rod (701) is fixedly mounted on the lower end of the extension block (104), and the second transmission mechanism (800) is arranged on the piston end of the electric push rod (701).

9. A PVC heat shrink tube quality detection device according to claim 8, characterized in that: The second transmission mechanism (800) includes a reciprocating motor (801) and a mounting bar (802), wherein the mounting bar (802) is fixedly connected to the piston end of the electric push rod (701), and the reciprocating motor (801) is mounted on one side of the mounting bar (802) by means of bolts. The lower end of the mounting bar (802) is slidably connected to a threaded seat (803), and the inner side of the mounting bar (802) is rotatably connected to a second threaded drive shaft (805) via a second bearing (804). One end of the second threaded drive shaft (805) is transmission-connected to the output shaft of the reciprocating motor (801) via a flat key, and an elastic component (900) having elasticity is provided at the lower end of the threaded seat (803), and the wear resistance testing mechanism (300) is provided at the lower end of the elastic component (900).

10. A PVC heat shrink tube quality detection device according to claim 9, characterized in that: The elastic component (900) includes a curved tube (901) and a mounting rod (902). The wear resistance testing mechanism (300) is composed of an arc-shaped grinding seat, and the arc-shaped grinding seat is fixedly connected to the lower end of the mounting rod (902). The mounting rod (902) is slidably plugged into the lower end of the curved tube (901). A spring is installed in the curved tube (901). The two ends of the spring are respectively welded and fixed to the mounting rod (902) and the curved tube (901). The curved tube (901) is welded and fixed to the lower end of the threaded seat (803).

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