Contact angle test system

Abstract

A contact angle test system, belonging to the technical field of contact angle test devices. The contact angle test system comprises a fixed sleeve (100); a positioning assembly (200), which comprises a rotary sleeve rotatably mounted in the fixed sleeve (100), a restoring member provided on the fixed sleeve (100), and a sliding block elastically mounted on the rotary sleeve, wherein the restoring member is in transmission connection with the sliding block, and the sliding block is provided with a protrusion that can extend into a gap in the surface of a cable; and a brake assembly (300), which comprises an abutting block elastically mounted on the fixed sleeve (100), wherein the abutting block is also in transmission connection with the restoring member, and after the rotary sleeve rotates to a predetermined angle, the abutting block can abut against the cable. When the rotary sleeve rotates to the predetermined angle, the abutting block abuts against the cable, such that the rotary sleeve cannot continue to move axially, which indicates to an operator that the cable has reached a sampling point. Thus, the rotary sleeve moves axially by a fixed length each time, enabling fixed-point sampling of the cable.

Description

A contact angle testing system TECHNICAL FIELD

[0001] The present application relates to the technical field of contact angle testing devices, in particular to a contact angle testing system. BACKGROUND

[0002] At present, in the actual detection of micro automatic portable contact angle testing instruments and equipment, by measuring the contact angles at different positions of the sample, the characteristics of the sample surface, such as chemical composition, microstructure and roughness, can be more comprehensively understood. These surface characteristics have important influence on the wettability of liquid and the size of contact angle. Therefore, measuring the contact angles at different positions of the sample helps to evaluate the wettability, surface energy and surface characteristics of the material, and provides basis for material selection, surface modification and quality control. At the same time, it also helps to understand the interaction between the material and the liquid or gas, and provides guidance for practical application.

[0003] In the detection process, it is usually necessary to place the measuring instrument directly on the sample to be detected, and then perform measurement operation. However, when multiple point detection is performed on the sample, the detector needs to repeatedly pick up the measuring instrument and then place it on the new detection point for measurement. In this process, the position adjustment of the measuring instrument completely depends on the subjective judgment of the detector, and it is difficult to preset different detection points according to the actual situation of the sample and ensure that the measuring instrument can accurately move to the specified detection point in the actual detection process. This way affects the reliability and accuracy of the measurement results, and the subjective operation of the detector also increases the error. SUMMARY

[0004] This section aims to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0005] In view of the above and / or problems existing in the prior art, the present application is proposed.

[0006] Therefore, the problem to be solved by the present application is how to solve the problem of multi-point sampling test on the cable.

[0007] In order to solve the above technical problems, the present application provides the following technical scheme: a contact angle testing system, comprising a fixed sleeve, a positioning assembly comprising a rotating sleeve rotatably installed in the fixed sleeve, a reset member arranged on the fixed sleeve, and a sliding block elastically installed on the rotating sleeve; the reset member is in transmission connection with the sliding block, and the sliding block is provided with a protruding portion capable of extending into a surface gap of a cable; a brake assembly comprising a contact block elastically installed on the fixed sleeve, the contact block also being in transmission connection with the reset member; when the rotating sleeve is rotated to a predetermined angle, the contact block can abut against the cable.

[0008] As a preferred scheme of the contact angle testing system of the present application, wherein: a first installation groove is formed in the inner circumferential wall of the rotating sleeve; the sliding block is elastically installed in the first installation groove, and the protruding portion is located on the side end face of the sliding block facing the cable.

[0009] As a preferred scheme of the contact angle testing system of the present application, wherein: a second installation groove is formed in the inner circumferential wall of the fixed sleeve, and the second installation groove has an annular shape; the reset member comprises a coil spring, one end of the coil spring is in clamping connection with the outer circumferential wall of the rotating sleeve, and the other end of the coil spring is provided with a first hook portion.

[0010] As a preferred scheme of the contact angle testing system of the present application, wherein: an installation column is arranged on the outer circumferential wall of the fixed sleeve, and an installation hole is formed in the installation column; the reset member further comprises a floating piece, the floating piece is elastically installed in the installation hole, one end of the floating piece close to the coil spring is provided with a second hook portion, the second hook portion is in clamping connection with the first hook portion, and the coil spring can pull the floating piece to move towards the cable.

[0011] As a preferred scheme of the contact angle testing system of the present application, wherein: the positioning assembly further comprises a first transmission ring; a third installation groove is formed in the inner circumferential wall of the fixed sleeve, the third installation groove has an annular shape, and the third installation groove is in communication with the second installation groove; the first transmission ring is rotatably installed in the third installation groove through a first torsion spring, an arc-shaped groove is arranged on the inner circumferential wall of the first transmission ring, a first contact column is arranged on the sliding block, and the first contact column abuts against the arc-shaped groove.

[0012] As a preferred scheme of the contact angle test system, the brake assembly further comprises a second transmission ring; a fourth mounting groove is formed in the inner peripheral wall of the fixed sleeve, the fourth mounting groove is annular in shape, and the fourth mounting groove is in communication with the second mounting groove; the second transmission ring is rotatably mounted in the fourth mounting groove through a torsional spring, one side of the second transmission ring facing the abutting block is provided with a poking column, the abutting block is provided with a second abutting column, the poking column abuts against the second abutting column, and the poking column is used to push the abutting block to abut against the cable.

[0013] As a preferred scheme of the contact angle test system, one end of the floating piece close to the cable is further provided with an arc-shaped protrusion, one end of the first transmission ring facing the floating piece is provided with a first transmission column, one end of the second transmission ring facing the floating piece is provided with a second transmission column, the first transmission column and the second transmission column both abut against the arc-shaped protrusion, and the arc-shaped protrusion is used to drive the first transmission ring and the second transmission ring to rotate.

[0014] As a preferred scheme of the contact angle test system, an elastic floating ratchet block is mounted in the mounting hole, and one end of the floating piece facing the floating ratchet block is provided with a ratchet groove, and the ratchet groove is used to be clamped with the floating ratchet block.

[0015] As a preferred scheme of the contact angle test system, the positioning assembly further comprises an unlocking pull rope, and the unlocking pull rope is connected with the floating ratchet block.

[0016] As a preferred scheme of the contact angle test system, the system further comprises a support, the fixed sleeve is arranged on the support, a control module, and a contact angle measuring instrument arranged on the support and electrically connected with the control module.

[0017] The contact angle test system has the following beneficial effects: when the rotating sleeve is rotated by a predetermined angle, the abutting block abuts against the cable, so that the rotating sleeve cannot continue to move axially, the operator is prompted that the cable has reached the sampling point, the rotating sleeve moves axially by a fixed length each time, and the cable is sampled at a fixed point. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative labor. Among them:

[0019] Fig. 1 is a use scene diagram of the contact angle test system.

[0020] Fig. 2 is a diagram of a use scenario of the contact angle testing system.

[0021] Fig. 3 is a diagram of the cable of the contact angle testing system located in the fixed sleeve.

[0022] Fig. 4 is a diagram of the structure of the fixed sleeve, the positioning assembly and the brake assembly of the contact angle testing system.

[0023] Fig. 5 is a sectional view of Fig. 4.

[0024] Fig. 6 is a sectional view of Fig. 4 from another perspective.

[0025] Fig. 7 is a diagram of the structure of the reset member of the contact angle testing system.

[0026] Fig. 8 is a diagram of the cooperation of the first transmission ring and the second transmission ring of the contact angle testing system. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present application more apparent and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0028] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other manners different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0029] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. The "in one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is the embodiment independent or selectively exclusive of other embodiments.

[0030] Embodiment 1

[0031] Referring to Figs. 1-8, the first embodiment of the present application provides a contact angle testing system, which comprises a fixed sleeve 100, a positioning assembly 200 and a brake assembly 300; the fixed sleeve 100 is used to install the positioning assembly 200 and the brake assembly 300, the positioning assembly 200 moves a fixed distance relative to the length direction of the cable, and when the positioning assembly 200 moves the fixed distance relative to the cable, the brake assembly 300 is used to clamp the cable to play the role of the brake.

[0032] Specifically, the fixed sleeve 100 is in the shape of a cylinder, hollow inside, open at both ends, the cable passes through the fixed sleeve 100, and the fixed sleeve 100 coincides with the central axis of the cable, and the operator holds the fixed sleeve 100 during use, so that the fixed sleeve 100 is fixed in the circumferential direction.

[0033] The positioning assembly 200 comprises a rotating sleeve 201 rotatingly installed in the fixed sleeve 100, a reset member 202 arranged on the fixed sleeve 100, and a sliding block 203 elastically installed on the rotating sleeve 201; the reset member 202 is in transmission connection with the sliding block 203, the sliding block 203 is provided with a protruding portion 203a capable of extending into the gap on the surface of the cable M; the rotating sleeve 201 is in the shape of a cylinder, hollow inside, open at both ends, the cable passes through the rotating sleeve 201, and the rotating sleeve 201 coincides with the central axis of the cable; when the operator pulls the cable, the rotating sleeve 201 moves relative to the cable, the protruding portion 203a of the sliding block 203 cooperates with the gap on the surface of the cable M, drives the rotating sleeve 201 to move axially relative to the cable while rotating in the circumferential direction, and when the rotating sleeve 201 rotates in the circumferential direction, the reset member 202 is driven to rotate, and after the rotating sleeve 201 rotates to a predetermined angle, the predetermined angle of the embodiment is 20°, under the reset force of the reset member 202, the rotating sleeve 201 rotates back to the initial angle.

[0034] The brake assembly 300 comprises a contact block 301 elastically installed on the fixed sleeve 100, and the contact block 301 is also in transmission connection with the reset member 202; when the rotating sleeve 201 rotates to the predetermined angle, the contact block 301 can contact the cable M, and plays a role of fixation.

[0035] Preferably, a first installation groove is arranged on the inner circumferential wall of the rotating sleeve 201; the sliding block 203 is elastically installed in the first installation groove, and the protruding portion 203a is located on the side end face of the sliding block 203 facing the cable M. When the sliding block 203 loses the block of external force, the sliding block 203 can shrink in the first installation groove 201a under the action of the elastic force, and at this time, the protruding portion 203a loses cooperation with the gap on the surface of the cable M.

[0036] Preferably, a second installation groove 102 is arranged on the inner circumferential wall of the fixed sleeve 100, and the second installation groove 102 is in the shape of a ring; the reset member 202 comprises a coil spring 202a, one end of the coil spring 202a is clamped with the outer circumferential wall of the rotating sleeve 201, and the other end of the coil spring 202a is provided with a first hook portion 202a-1. When the rotating sleeve 201 rotates in the circumferential direction, the coil spring 202a can be driven to move.

[0037] Preferably, the outer peripheral wall of the fixing sleeve 100 is provided with a mounting column 101, and the mounting column 101 is provided with a mounting hole 101a; the reset member 202 further comprises a floating piece 202b, the floating piece 202b is elastically mounted in the mounting hole 101a, one end of the floating piece 202b close to the coil spring 202a is provided with a second hook portion 202b-1, the second hook portion 202b-1 is connected with the first hook portion 202a-1, and the coil spring 202a can pull the floating piece 202b to move towards the cable M. After the rotating sleeve 201 rotates 19° in the circumferential direction, the floating piece 202b can be pulled to move towards the cable M.

[0038] Preferably, the positioning assembly 200 further comprises a first transmission ring 204; the inner peripheral wall of the fixing sleeve 100 is provided with a third mounting groove 103, the third mounting groove 103 is annular, and the third mounting groove 103 is communicated with the second mounting groove 102; the first transmission ring 204 is rotatably mounted in the third mounting groove 103 through a first torsion spring 204a, the inner peripheral wall of the first transmission ring 204 is provided with an arc-shaped groove 204b, the sliding block 203 is provided with a first abutting column 203b, and the first abutting column 203b abuts against the arc-shaped groove 204b. When the first transmission ring 204 rotates, the arc-shaped groove 204b is driven to rotate, and the first abutting column 203b is gradually retracted into the first mounting groove 201a under the action of the elastic force.

[0039] Preferably, the brake assembly 300 further comprises a second transmission ring 302; the inner peripheral wall of the fixing sleeve 100 is provided with a fourth mounting groove 104, the fourth mounting groove 104 is annular, and the fourth mounting groove 104 is communicated with the second mounting groove 102; the second transmission ring 302 is rotatably mounted in the fourth mounting groove 104 through a torsion spring, one side of the second transmission ring 302 close to the abutting block 301 is provided with a pushing column 302a, the abutting block 301 is provided with a second abutting column 301a, the pushing column 302a abuts against the second abutting column 301a, and the pushing column 302a is used for pushing the abutting block 301 to abut against the cable M. When the second transmission ring 302 rotates, the abutting block 301 is gradually driven to move towards the cable M until abutting against the cable M through the cooperation of the pushing column 302a and the second abutting column 301a.

[0040] Preferably, the end of the floating piece 202b close to the cable M is also provided with an arc-shaped protrusion 202b-2, the end of the first transmission ring 204 close to the floating piece 202b is provided with a first transmission column 204c, the end of the second transmission ring 302 close to the floating piece 202b is provided with a second transmission column 302b, the first transmission column 204c and the second transmission column 302b are in contact with the arc-shaped protrusion 202b-2, and the arc-shaped protrusion 202b-2 is used to drive the first transmission ring 204 and the second transmission ring 302 to rotate. When the rotating sleeve 201 rotates circumferentially by 19°, the floating piece 202b can be pulled to move towards the cable M, and in the process of moving the floating piece 202b towards the cable M, the arc-shaped protrusion 202b-2 presses the first transmission column 204c and the second transmission column 302b, so as to drive the first transmission ring 204 and the second transmission ring 302 to rotate.

[0041] Preferably, the mounting hole 101a is elastically mounted with a floating ratchet block 205, and the end of the floating piece 202b close to the floating ratchet block 205 is provided with a ratchet groove 202b-3, which is used to be clamped with the floating ratchet block 205. When the floating piece 202b moves towards the cable M, the floating ratchet block 205 does not hinder the movement of the floating piece 202b, but hinders the movement of the floating piece 202b in the opposite direction.

[0042] Further, the positioning assembly 200 further comprises an unlocking pull rope 206 connected with the floating ratchet block 205. When the operator pulls the pull rope 206, the floating ratchet block 205 can be disengaged from the clamping state with the ratchet groove 202b-3.

[0043] Further, the positioning assembly 200 further comprises an unlocking pull rope 206 connected with the floating ratchet block 205. When the operator pulls the pull rope 206, the floating ratchet block 205 can be disengaged from the clamping state with the ratchet groove 202b-3.

[0044] In order to facilitate the understanding of the technical scheme of the present application, the working process thereof will be briefly described as follows:

[0045] The operator pulls the cable M with hands, so that the cable M moves axially relative to the fixed sleeve, and in the process of pulling the cable M, the protruding part 203a slides along the gap on the surface of the cable M, so as to drive the rotating sleeve 201 to rotate, and when the rotating sleeve 201 rotates to a predetermined angle, the coil spring 202a is in a tensioned state, and the second hook part 202b-1 of the coil spring 202a drives the floating piece 202b to move downwards by pulling the first hook part 202a-1, so that the arc-shaped protrusion 202b-2 on the floating piece 202b drives the first transmission ring 204 to rotate by pressing the first transmission column 204c, and drives the second transmission ring 302 to rotate by pressing the second transmission column 302b.

[0046] When the first transmission ring 204 rotates, the sliding block 203 loses the restriction and is retracted in the first installation slot 201a under the action of the elastic force. At this time, the convex part 203a is no longer in contact with the gap on the surface of the cable M. Under the action of the reset force of the coil spring 202a, the rotating sleeve 201 rotates and resets to the initial position.

[0047] When the second transmission ring 302 rotates, the driving contact block 301 is in contact with the cable M. At this time, the rotating sleeve 201 cannot move axially relative to the cable M, prompting the operator that the cable M has moved to a sampling point.

[0048] Subsequently, the unlocking pull rope 206 is pulled, the floating ratchet block 205 is disengaged from the ratchet slot 202b-3, the floating piece 202b resets upward, the first transmission ring 204 resets under the action of the first torsion spring 204a, and the second transmission ring 302 resets under the action of the second torsion spring 302c.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A contact angle testing system characterized by: The utility model relates to a cable fixing device, which comprises a fixing sleeve (100), a positioning assembly (200) and a brake assembly (300). The positioning assembly (200) comprises a rotating sleeve (201) rotatably installed in the fixing sleeve (100), a reset member (202) arranged on the fixing sleeve (100), and a sliding block (203) elastically installed on the rotating sleeve (201); the reset member (202) is in transmission connection with the sliding block (203), and the sliding block (203) is provided with a protruding part (203a) capable of extending into a gap on the surface of a cable (M). The brake assembly (300) comprises a contact block (301) elastically installed on the fixing sleeve (100), and the contact block (301) is also in transmission connection with the reset member (202); when the rotating sleeve (201) rotates to a predetermined angle, the contact block (301) can abut against the cable (M). A first installation groove (201a) is formed in the inner circumferential wall of the rotating sleeve (201), the sliding block (203) is elastically installed in the first installation groove (201a), and the protruding part (203a) is located on the side end face of the sliding block (203) facing the cable (M).

2. The contact angle testing system of claim 1, wherein: A second installation groove (102) is formed in the inner circumferential wall of the fixing sleeve (100), the second installation groove (102) is annular, the reset member (202) comprises a coil spring (202a), one end of the coil spring (202a) is clamped to the outer circumferential wall of the rotating sleeve (201), and the other end of the coil spring (202a) is provided with a first hook part (202a-1).

3. The contact angle testing system of claim 2, wherein: An installation column (101) is arranged on the outer circumferential wall of the fixing sleeve (100), an installation hole (101a) is formed in the installation column (101), the reset member (202) further comprises a floating piece (202b), the floating piece (202b) is elastically installed in the installation hole (101a), one end of the floating piece (202b) close to the coil spring (202a) is provided with a second hook part (202b-1), the second hook part (202b-1) is clamped to the first hook part (202a-1), and the coil spring (202a) can pull the floating piece (202b) to move towards the cable (M).

4. The contact angle testing system of claim 3, wherein: The positioning assembly (200) further comprises a first transmission ring (204), a third installation groove (103) is formed in the inner circumferential wall of the fixing sleeve (100), the third installation groove (103) is annular, the third installation groove (103) is in communication with the second installation groove (102), the first transmission ring (204) is rotatably installed in the third installation groove (103) through a first torsion spring (204a), an arc-shaped groove (204b) is arranged on the inner circumferential wall of the first transmission ring (204), a first contact column (203b) is arranged on the sliding block (203), and the first contact column (203b) abuts against the arc-shaped groove (204b).

5. The contact angle testing system of claim 4, wherein: ​ 6. The contact angle testing system of claim 5, wherein: The brake assembly (300) further comprises a second transmission ring (302); a fourth mounting groove (104) is formed in the inner peripheral wall of the fixed sleeve (100), the fourth mounting groove (104) is annular in shape, and the fourth mounting groove (104) is in communication with the second mounting groove (102); the second transmission ring (302) is rotatably mounted in the fourth mounting groove (104) by a second torsional spring (302c), one side of the second transmission ring (302) facing the abutting block (301) is provided with a pushing column (302a), the abutting block (301) is provided with a second abutting column (301a), the pushing column (302a) abuts against the second abutting column (301a), and the pushing column (302a) is used to push the abutting block (301) to abut against the cable (M).

7. The contact angle testing system of claim 6, wherein: One end of the floating piece (202b) close to the cable (M) is further provided with an arc-shaped protrusion (202b-2), one end of the first transmission ring (204) facing the floating piece (202b) is provided with a first transmission column (204c), and one end of the second transmission ring (302) facing the floating piece (202b) is provided with a second transmission column (302b); the first transmission column (204c) and the second transmission column (302b) abut against the arc-shaped protrusion (202b-2), and the arc-shaped protrusion (202b-2) is used to drive the first transmission ring (204) and the second transmission ring (302) to rotate.

8. The contact angle testing system of claim 6 or 7, wherein: The floating ratchet block (205) is elastically mounted in the mounting hole (101a), one end of the floating piece (202b) facing the floating ratchet block (205) is provided with a ratchet groove (202b-3), and the ratchet groove (202b-3) is used to be clamped with the floating ratchet block (205).

9. The contact angle testing system of claim 8, wherein: The positioning assembly (200) further comprises an unlocking pull rope (206), and the unlocking pull rope (206) is connected with the floating ratchet block (205).

10. The contact angle testing system of claim 9, wherein: Further comprising, a support (400), wherein the fixed sleeve (100) is arranged on the support (400); a control module; a contact angle measuring instrument (600) arranged on the support (400) and electrically connected with the control module. a contact angle measuring instrument (600) arranged on the support (400) and electrically connected with the control module.

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