Multi-angle adjustable contact angle and rolling angle test fixture

Abstract

The invention relates to the technical field of contact angle measurement, in particular to a multi-angle adjustable contact angle and rolling angle test fixture which comprises a light source, a main body mechanism, an injection mechanism, a loading mechanism, a rolling angle fixture and a detection mechanism, the light source is connected with the main body mechanism, the main body mechanism is connected with the injection mechanism, the main body mechanism is connected with the loading mechanism, and the rolling angle fixture is connected with the detection mechanism. The main body mechanism is connected with the rolling angle jig, the main body mechanism is connected with the detection mechanism, the loading mechanism is connected with the rolling angle jig, the main body mechanism comprises a bedplate, at least four rubber foot pads, a fixed arm and a fixed base plate, the light source is connected with the fixed arm, the bedplate is fixedly connected with the rubber foot pads, and the bedplate is connected with the fixed base plate. The fixing arms are connected with the fixing base plate, the fixing arms comprise two long arms and two short arms, and the two long arms are connected with the fixing base plate.

Description

Technical Field

[0001] The invention relates to the technical field of contact angle measurement, in particular to a contact angle and rolling angle test fixture with multi-angle adjustment. Background Art

[0002] The rolling angle refers to the contact angle measured when a droplet rolls on a solid surface. It involves the dynamic behavior of a droplet rolling in a certain direction on the surface and reflects the wetting properties of the droplet as it moves on the surface.

[0003] Traditional contact angle and rolling angle test fixtures may have certain limitations in angle adjustment and cannot meet the needs of multi-angle testing, which limits their application on complex surfaces or in special application scenarios. At the same time, encoders are generally used to measure the rolling angle of droplets, and encoders can only output relative displacement information and cannot determine the absolute position. Calibration is required every time the device is started to ensure the accuracy of the measurement results. In addition, the encoder is easily affected by external interference during use, resulting in inaccurate measurements. Summary of the invention

[0004] The object of the present invention is to provide a contact angle and rolling angle test fixture with multi-angle adjustment to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solution: a contact angle and rolling angle test fixture with multi-angle adjustment.

[0006] The test fixture includes a light source, a main body mechanism, an injection mechanism, a carrier mechanism, a rolling angle fixture and a detection mechanism. The light source is connected to the main body mechanism, the main body mechanism is connected to the injection mechanism, the main body mechanism is connected to the carrier mechanism, the main body mechanism is connected to the rolling angle fixture, the main body mechanism is connected to the detection mechanism, and the carrier mechanism is connected to the rolling angle fixture.

[0007] In the test fixture, the main body mechanism is used to support the entire test device and provide a supporting foundation for the test fixture. The injection mechanism is used to inject droplets and provide the object to be tested. The injection mechanism drops the droplets onto the carrier mechanism. The carrier mechanism is used to carry the droplets and provide a platform for testing. The rolling angle fixture is used to detect the size of the rolling angle. The detection mechanism is used to detect the size of the rolling angle and display it specifically.

[0008] Furthermore, the main mechanism includes a table, a rubber foot pad, a fixed arm and a fixed base plate, the light source is connected to the fixed arm, there are no less than four rubber foot pads, the table and the rubber foot pad are tightly connected, the table is connected to the fixed base plate, the fixed arm is connected to the fixed base plate, the fixed arm includes a long arm and a short arm, two long arms are provided, two short arms are provided, the two long arms are connected to the fixed base plate, the light source and the opposite surfaces of the two long arms are tightly connected, the short arm is connected to the fixed base plate, the fixed base plate includes a first fixed plate and a second fixed plate, the first fixed plate is tightly connected to the long arm, the second fixed plate is tightly connected to the short arm, the table is connected to the loading mechanism, the table is connected to the rolling angle jig, the fixed arm is connected to the detection mechanism, the fixed arm is connected to the injection mechanism, the second fixed plate is connected to the detection mechanism, and the first fixed plate is connected to the injection mechanism.

[0009] In the main mechanism, the table serves as the basis of the entire test fixture, the rubber foot pad is fastened to the table to support the table, the fixed arm is used to support the detection mechanism and the rolling angle fixture, the short arm is used to fix the detection mechanism, and the detection mechanism is fixed thereon after the short arm is fastened to the second fixed plate, and the rolling angle fixture is installed thereon after the long arm is fastened to the first fixed plate, so that the rolling angle fixture and the detection mechanism can work more stably. At the same time, a light source is fastened between the two long arms to fix the light source so that it will not move up and down, thereby better detecting the rolling angle.

[0010] Furthermore, the injection mechanism includes an injection needle and an injection drive device. The injection needle has a hollow structure inside. The injection needle is connected to the injection drive device. The injection drive device includes a hydraulic cylinder, a push plate, a needle push rod and a limit plate. The limit plate is tightly connected to the hydraulic cylinder. The output end of the hydraulic cylinder is tightly connected to the push plate. The side of the push plate away from the hydraulic cylinder is tightly connected to the needle push rod. The end of the needle push rod away from the push plate extends into the injection needle. The needle push rod is slidably connected to the inner wall of the injection needle. The injection mechanism also includes an injection moving device and a needle tube fixing device. The injection needle is connected to the needle tube fixing device. The injection drive device is connected to the injection moving device. The injection drive device is connected to the needle tube fixing device. The first fixing plate is connected to the injection moving device. The limit plate is connected to the injection moving device. The limit plate is connected to the needle tube fixing device. The injection moving device includes a first A fixed base plate, a first screw rod, a first fixed block and a first sliding block, two first fixed blocks are provided, the two first fixed blocks are fastened to the first fixed base plate, a plurality of first screw rods are provided, both ends of the first screw rod are fastened to the two first fixed blocks, a plurality of through holes are provided in the first sliding block, the first sliding block is slidably connected to the first screw rod, two groups of injection moving devices are provided, the two groups of injection moving devices are perpendicular to each other, the first group of first sliding blocks and the second group of first fixed base plates are fastened to each other, the first group of first fixed base plates and the first fixed plate are fastened to each other, the limiting plate and the first sliding block of the second group of injection moving devices are fastened to each other, the needle tube fixing device comprises an injection fixing head and a plastic needle tube clamp, a fixing groove is provided in the injection fixing head, the plastic needle tube clamp is fastened to the fixing groove of the injection fixing head, and the injection fixing head is fastened to the limiting plate.

[0011] In the injection mechanism, this mechanism is used to inject droplets that need to be detected by rolling angle. The injection needle is used to store the droplets and output them. The injection drive device uses a hydraulic cylinder to push the push plate. The push plate pushes the needle push rod that is tightly connected to the push plate to move downward. The needle push rod slides and presses down along the inner wall of the injection needle, so that the droplets in the injection needle fall down. The injection moving device provides two-way movement for the injection mechanism. The two injection moving devices are vertically fixed together to control the injection mechanism to move up and down and left and right. The needle tube fixing device is used to fix the injection needle. The injection needle is fixed by the injection fixing head and the plastic needle tube clamp to prevent it from moving when the injection drive device drives the injection droplet. After the device is started, the injection The injection moving device controls the movement of another group of injection moving devices by moving a group of first sliding blocks on the first screw rod and moving it up and down, and then moves the first sliding block of this group left and right along the first screw rod. This group of injection moving devices is tightly connected to the limit plate of the injection driving device, and the limit plate is tightly connected to the injection needle through the needle tube fixing device. Therefore, when the injection moving device is working, the injection moving device drives the injection driving device, the needle tube fixing device and the injection needle to move up and down and left and right. When it moves to the appropriate position, the injection driving device pushes the needle push rod through the hydraulic cylinder, so that the needle push rod extends toward the inner wall of the injection needle, pushes out the droplets, and falls onto the carrier mechanism.

[0012] Furthermore, the loading mechanism includes a loading platform, handle screws and clamps. The loading platform is connected to the rolling angle fixture. Two clamps are provided and the two clamps are placed on the loading platform. There are no less than four handle screws, which are divided into two groups. One group of handle screws fastens the clamps and the loading platform.

[0013] The loading mechanism is used to place the droplets injected by the injection mechanism. The droplets fall onto the loading platform, and the clamping block is pressed by the handle screw to fix the droplets so that they will not move around and affect the test results.

[0014] Furthermore, the rolling angle jig includes a rotating gear, a transmission gear, a rotating bearing, a jig mounting bracket and a lifting device, the lifting device is connected to the table, the jig mounting bracket is connected to the lifting device through a flat plate, the jig mounting bracket is connected to the rotating gear through transmission, the rotating gear and the transmission gear are meshed, the transmission gear and the rotating bearing are connected through transmission bearing transmission, the rotating bearing and the handwheel are connected through a worm transmission, and the side of the rotating gear close to the carrying mechanism is fastened to the carrying mechanism through a connecting seat, a lifting platform and the carrying mechanism.

[0015] In the rolling angle fixture, this mechanism is used to rotate the stage so that the stage drives the droplets on it to rotate, so as to detect the rolling angle of the droplets to be tested. The fixture mounting bracket provides a support for the rolling angle fixture. According to the size of the dripping droplets, the lifting device is controlled to adjust the height of the stage and the rolling angle fixture, and then fine-tuned through the lifting platform. After adjustment, the hand wheel is turned to drive the rotating bearing to rotate, and the rotating bearing drives the transmission gear to rotate. The rotating gear and the transmission gear are meshed, so they are rotated together, and the rotating gear and the stage are tightly connected, so the stage and the droplets on it will be rotated, so as to measure the rolling angle of the droplets.

[0016] Furthermore, the detection mechanism includes a photoelectric sensor, a drive motor, a driving gear, a driven gear, an angle scale disk and a sensor moving device. The photoelectric sensor is connected to the sensor moving device, the drive motor is fastened to the second fixed plate, the output end of the drive motor is fastened to the driving gear, the driving gear and the driven gear are meshed, the driven gear is fastened to the second fixed plate through a fixed rod, the angle scale disk is sleeved outside the driven gear, the angle scale disk is fastened to the second fixed plate through a fixed rod, a pointer is provided on the driven gear to point to the angle scale disk, the sensor moving device includes a second fixed base plate, a second screw rod, a second fixed block, a second sliding block, the photoelectric sensor and the second sliding block are fastened to the second fixed base plate and the second fixed plate are fastened to the second fixed block, two second fixed blocks are provided, the two second fixed blocks are fastened to the second fixed base plate, the second screw rod is provided with a plurality of, both ends of the second screw rod are fastened to the two second fixed blocks, the second sliding block is provided with a plurality of through holes, and the second sliding block and the second screw rod are slidably connected.

[0017] In the detection mechanism, the rolling angle of the droplet is detected by a photoelectric sensor. The light source is emitted toward the detection mechanism through the droplet, and the rolling angle is determined by detecting the light source. After detection, the signal is transmitted to the drive motor. The drive motor drives the active gear to rotate, and the meshing driven gear also rotates. The active gear is larger than the driven gear, so the angle of rotation of the active gear is smaller than that of the driven gear. At the same distance, the driven gear rotates more. The rolling angle is determined by the pointer on the driven gear pointing to the angle scale disk. This can not only specifically represent the signal, but also observe the rolling angle more clearly and greatly reduce interference.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: after the present invention is started, the position of the injection needle is changed by the injection moving device. After the injection needle is moved to a suitable position, the injection driving device is started, and the hydraulic cylinder pushes the needle push rod toward the injection needle, so that the liquid drop in the injection needle falls onto the stage, and is fixed by the handle screw and the clamp block, and then the height is adjusted by the lifting device, and the lifting platform is used for fine adjustment, so that the photoelectric sensor, the liquid drop and the light source are on the same axis, and then the rolling angle is detected, the hand wheel is rotated to rotate the rotating bearing, and the rotating gear is rotated, so that the stage rotates with the liquid drop, and the photoelectric sensor is used to detect the light source to determine the rolling angle, and the signal is transmitted to the driving motor, and the driving motor drives the driving gear to rotate, and the meshing driven gear also rotates. The driving gear is larger than the driven gear, so the angle of the driving gear when it rotates is smaller than that of the driven gear. At the same distance, the driven gear rotates more, and the rolling angle is determined by the pointer on the driven gear pointing to the angle scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a side view of the present invention; Figure 3 It is a schematic diagram of the injection mechanism structure of the present invention; Figure 4 It is a schematic diagram of the structure of the object-carrying mechanism of the present invention; Figure 5 It is a schematic diagram of the rolling angle fixture structure of the present invention; Figure 6 yes Figure 5 Enlarged view of part A; Figure 7 It is a schematic diagram of the structure of the detection mechanism of the present invention; In the figure: 1, light source; 2, main body; 21, table; 22, rubber foot pad; 23, fixed arm; 231, long arm; 232, short arm; 24, fixed base plate; 241, first fixed plate; 242, second fixed plate; 3, injection mechanism; 31, injection needle; 32, injection drive device; 321, hydraulic cylinder; 322, push plate; 323, needle push rod; 324, limit plate; 33, injection moving device; 331, first fixed base plate; 332, first screw rod; 333, first fixed block; 334, first sliding block; 34, needle tube fixing device; 34 1. Injection fixing head; 342. Plastic needle clamp; 4. Loading mechanism; 41. Loading table; 42. Handle screw; 43. Clamp block; 5. Rolling angle fixture; 51. Rotating gear; 52. Transmission gear; 53. Rotating bearing; 54. Fixture mounting bracket; 55. Lifting device; 6. Detection mechanism; 61. Photoelectric sensor; 62. Driving motor; 63. Active gear; 64. Driven gear; 65. Angle scale plate; 66. Sensor moving device; 661. Second fixed base plate; 662. Second screw rod; 663. Second fixed block; 664. Second sliding block. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] See also Figure 1-7 , the present invention provides a technical solution: The test fixture includes a light source 1, a main body mechanism 2, an injection mechanism 3, a carrier mechanism 4, a rolling angle fixture 5 and a detection mechanism 6. The light source 1 is connected to the main body mechanism 2, the main body mechanism 2 is connected to the injection mechanism 3, the main body mechanism 2 is connected to the carrier mechanism 4, the main body mechanism 2 is connected to the rolling angle fixture 5, the main body mechanism 2 is connected to the detection mechanism 6, and the carrier mechanism 4 is connected to the rolling angle fixture 5.

[0023] In the test fixture, the main body mechanism 2 is used to support the entire test device and provide a supporting basis for the test fixture. The injection mechanism 3 is used to inject droplets and provide an object to be tested. The injection mechanism 3 drops the droplets onto the carrier mechanism 4. The carrier mechanism 4 is used to carry the droplets and provide a platform for testing. The rolling angle fixture 5 is used to detect the size of the rolling angle. The detection mechanism 6 is used to detect the size of the rolling angle and display it specifically.

[0024] The main body 2 includes a table 21, a rubber pad 22, a fixed arm 23 and a fixed base plate 24, the light source 1 is connected to the fixed arm 23, there are no less than four rubber pads 22, the table 21 and the rubber pad 22 are tightly connected, the table 21 is connected to the fixed base plate 24, the fixed arm 23 is connected to the fixed base plate 24, the fixed arm 23 includes a long arm 231 and a short arm 232, the long arm 231 is provided with two, the short arm 232 is provided with two, the two long arms 231 are connected to the fixed base plate 24, the light source 1 and the two long arms 231 face each other tightly The short arm 232 is connected to the fixed base plate 24, the fixed base plate 24 includes a first fixed plate 241 and a second fixed plate 242, the first fixed plate 241 and the long arm 231 are fastened together, the second fixed plate 242 and the short arm 232 are fastened together, the table 21 is connected to the loading mechanism 4, the table 21 is connected to the rolling angle fixture 5, the fixed arm 23 is connected to the detection mechanism 6, the fixed arm 23 is connected to the injection mechanism 3, the second fixed plate 242 is connected to the detection mechanism 6, and the first fixed plate 241 is connected to the injection mechanism 3.

[0025] In the main body 2, the table 21 serves as the basis of the entire test fixture. The rubber foot pad 22 is fastened to the table 21 to support the table 21. The fixed arm 23 is used to support the detection mechanism 6 and the rolling angle fixture 5. The short arm 232 is used to fix the detection mechanism 6. After the short arm 232 and the second fixed plate 242 are fastened together, the detection mechanism 6 is fixed thereon. After the long arm 231 is fastened to the first fixed plate 241, the rolling angle fixture 5 is installed thereon, so that the rolling angle fixture 5 and the detection mechanism 6 can work more stably. At the same time, a light source 1 is also fastened between the two long arms 231 to fix the light source 1 so that it does not move up and down, so as to better detect the rolling angle.

[0026] The injection mechanism 3 includes an injection needle 31 and an injection drive device 32. The injection needle 31 has a hollow structure inside. The injection needle 31 is connected to the injection drive device 32. The injection drive device 32 includes a hydraulic cylinder 321, a push plate 322, a needle push rod 323 and a limit plate 324. The limit plate 324 is tightly connected to the hydraulic cylinder 321. The output end of the hydraulic cylinder 321 is tightly connected to the push plate 322. The push plate 322 is tightly connected to the needle push rod 323 on one side away from the hydraulic cylinder 321. The end of the needle push rod 323 away from the push plate 322 extends into the injection Inside the needle 31, the needle push rod 323 is slidably connected to the inner wall of the injection needle 31, the injection mechanism 3 also includes an injection moving device 33 and a needle tube fixing device 34, the injection needle 31 is connected to the needle tube fixing device 34, the injection drive device 32 is connected to the injection moving device 33, the injection drive device 32 is connected to the needle tube fixing device 34, the first fixing plate 241 is connected to the injection moving device 33, the limiting plate 324 is connected to the injection moving device 33, the limiting plate 324 is connected to the needle tube fixing device 34, the injection moving device 33 includes a first fixing plate 241 and a second fixing plate 241. A fixed base plate 331, a first screw rod 332, a first fixed block 333 and a first sliding block 334, two first fixed blocks 333 are provided, the two first fixed blocks 333 and the first fixed base plate 331 are fastened together, the first screw rod 332 is provided with a plurality of, the two ends of the first screw rod 332 are fastened together with the two first fixed blocks 333, the first sliding block 334 is provided with a plurality of through holes, the first sliding block 334 and the first screw rod 332 are slidably connected, the injection moving device 33 is provided with two groups, the two groups of injection moving devices 33 are perpendicular to each other, The first group of first sliding blocks 334 and the second group of first fixed base plates 331 are fastened together, the first group of first fixed base plates 331 and the first fixed plate 241 are fastened together, the limiting plate 324 and the second group of first sliding blocks 334 of the injection moving device 33 are fastened together, the needle tube fixing device 34 comprises an injection fixing head 341 and a plastic needle tube clamp 342, a fixing groove is provided in the injection fixing head 341, the plastic needle tube clamp 342 and the fixing groove of the injection fixing head 341 are fastened together, the injection fixing head 341 and the limiting plate 324 are fastened together.

[0027] In the injection mechanism 3, the mechanism is used to inject droplets that need to be detected for rolling angle, the injection needle 31 is used to store the droplets and output them, the injection drive device 32 uses the hydraulic cylinder 321 to push the push plate 322, the push plate 322 pushes the needle push rod 323 that is fastened to the push plate 322 to move downward, the needle push rod 323 slides and presses down along the inner wall of the injection needle 31, so that the droplets in the injection needle 31 fall down, the injection moving device 33 provides two-directional movement for the injection mechanism 3, and the two injection moving devices 33 are vertically fixed together to control the injection mechanism 3 to move up and down and left and right, the needle tube fixing device 34 is used to fix the injection needle 31, and the injection needle 31 is fixed by the injection fixing head 341 and the plastic needle tube clamp 342 to prevent it from moving when the injection drive device 32 drives the injection droplet, after the device is started, the injection moving device 33 controls the movement of another group of injection moving devices 33 by moving a group of first sliding blocks 334 up and down on the first screw rod 332, and then moves the first sliding blocks 334 of this group left and right along the first screw rod 332. The injection moving devices 33 of this group are fastened to the limit plate 324 of the injection drive device 32, and the limit plate 324 is fastened to the injection needle 31 through the needle tube fixing device 34. Therefore, when the injection moving device 33 is working, the injection moving device 33 drives the injection drive device 32, the needle tube fixing device 34 and the injection needle 31 to move up and down and left and right. When moving to a suitable position, the injection drive device 32 pushes the needle push rod 323 through the hydraulic cylinder 321, so that the needle push rod 323 extends toward the inner wall of the injection needle 31, pushes out the droplet, and falls onto the carrier mechanism 4.

[0028] The loading mechanism 4 includes a loading platform 41, a handle screw 42 and a clamp block 43. The loading platform 41 is connected to the rolling angle fixture 5. There are two clamp blocks 43, and the two clamp blocks 43 are placed on the loading platform 41. There are no less than four handle screws 42, and the four handle screws 42 are divided into two groups. One group of handle screws 42 fastens the clamp block 43 and the loading platform 41.

[0029] The loading mechanism 4 is used to place the droplets injected by the injection mechanism 3. The droplets fall onto the loading platform 41. The handle screw 42 is used to press the clamp block 43 to fix the droplets so that they will not move around and affect the detection results.

[0030] The rolling angle jig 5 includes a rotating gear 51, a transmission gear 52, a rotating bearing 53, a jig mounting bracket 54 and a lifting device 55. The lifting device 55 is connected to the table 21, the jig mounting bracket 54 is connected to the lifting device 55 through a flat plate, the jig mounting bracket 54 is connected to the rotating gear 51 through transmission, the rotating gear 51 is meshed with the transmission gear 52, the transmission gear 52 and the rotating bearing 53 are connected through transmission bearings, the rotating bearing 53 and the handwheel are connected through a worm gear, and the side of the rotating gear 51 close to the carrier mechanism 4 is fastened to the carrier mechanism 4 through a connecting seat, a lifting platform and the carrier mechanism 4.

[0031] In the rolling angle jig 5, the mechanism is used to rotate the stage 41 so that the stage 41 drives the droplets thereon to rotate, so as to detect the rolling angle of the droplets to be tested. The jig mounting bracket 54 provides a support for the rolling angle jig 5. According to the size of the dripping droplets, the lifting device 55 is controlled to adjust the height of the carrier mechanism 4 and the rolling angle jig 5, and then fine-tuned through the lifting platform. After adjustment, the hand wheel is turned to drive the rotating bearing 53 to rotate, and the rotating bearing 53 rotates to drive the transmission gear 52 to rotate. The rotating gear 51 is meshed with the transmission gear 52, so it is rotated together, and the rotating gear 51 is tightly connected to the carrier mechanism 4, so the carrier mechanism 4 will be rotated, and the stage 41 and the droplets thereon will also rotate, so as to measure the rolling angle of the droplets.

[0032] The detection mechanism 6 includes a photoelectric sensor 61, a drive motor 62, a driving gear 63, a driven gear 64, an angle scale plate 65 and a sensor moving device 66. The photoelectric sensor 61 is connected to the sensor moving device 66, the drive motor 62 is fastened to the second fixed plate 242, the output end of the drive motor 62 is fastened to the driving gear 63, the driving gear 63 is meshed with the driven gear 64, the driven gear 64 is fastened to the second fixed plate 242 by a fixing rod, the angle scale plate 65 is sleeved outside the driven gear 64, the angle scale plate 65 is fastened to the second fixed plate 242 by a fixing rod, and a pointer is provided on the driven gear 64. To the angle scale plate 65, the sensor moving device 66 includes a second fixed base plate 661, a second screw rod 662, a second fixed block 663, and a second sliding block 664. The photoelectric sensor 61 and the second sliding block 664 are fastened together. The second fixed base plate 661 and the second fixed plate 242 are fastened together. Two second fixed blocks 663 are provided. The two second fixed blocks 663 are fastened together with the second fixed base plate 661. The second screw rod 662 is provided with a plurality of holes. Both ends of the second screw rod 662 are fastened together with the two second fixed blocks 663. The second sliding block 664 is provided with a plurality of through holes. The second sliding block 664 is slidably connected with the second screw rod 662.

[0033] In the detection mechanism 6, the rolling angle of the droplet is detected by the photoelectric sensor 61, and the light source 1 is emitted toward the detection mechanism 6 through the droplet. The rolling angle is determined by detecting the light source 1. After detection, the signal is transmitted to the drive motor 62, and the drive motor 62 drives the active gear 63 to rotate, and the meshing driven gear 64 also rotates. The active gear 63 is larger than the driven gear 64, so the angle of the active gear 63 when rotating is smaller than the driven gear 64. At the same distance, the driven gear 64 rotates more. The rolling angle is determined by the pointer on the driven gear 64 pointing to the angle scale 65. Not only can the signal be specifically represented, the rolling angle can be observed more clearly, and interference can be greatly reduced.

[0034] Working principle of the present invention: After the present invention is started, the position of the injection needle 31 is changed by the injection moving device 33. After it is moved to a suitable position, the injection driving device 32 is started, and the hydraulic cylinder 321 pushes the needle push rod 323 toward the injection needle 31, so that the liquid drop in the injection needle 31 falls on the stage 41, and is fixed by the handle screw 42 and the clamp block 43. The height is then adjusted by the lifting device 55, and the lifting platform is used for fine adjustment so that the photoelectric sensor 61, the liquid drop and the light source 1 are on the same axis, and then the rolling angle is detected, and the hand wheel is rotated to rotate The bearing 53 rotates, causing the rotating gear 51 to rotate, causing the stage 41 to rotate with the droplet. The photoelectric sensor 61 detects the light source 1 to determine the roll angle, and transmits the signal to the drive motor 62. The drive motor 62 drives the active gear 63 to rotate, and the meshing driven gear 64 also rotates. The active gear 63 is larger than the driven gear 64, so the active gear 63 rotates at a smaller angle than the driven gear 64. At the same distance, the driven gear 64 rotates more, and the roll angle is determined by the pointer on the driven gear 64 pointing to the angle scale 65.

[0035] Although the embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, substitute and vary the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A multi-angle adjustable contact angle and rolling angle test fixture. Features: The test fixture comprises a light source (1), a main body mechanism (2), an injection mechanism (3), a carrier mechanism (4), a rolling angle fixture (5) and a detection mechanism (6); the light source (1) is connected to the main body mechanism (2), the main body mechanism (2) is connected to the injection mechanism (3), the main body mechanism (2) is connected to the carrier mechanism (4), the main body mechanism (2) is connected to the rolling angle fixture (5), the main body mechanism (2) is connected to the detection mechanism (6), and the carrier mechanism (4) is connected to the rolling angle fixture (5).

2. A multi-angle adjustable contact angle and rolling angle test fixture according to claim 1, Features: The main body structure (2) comprises a table (21), a rubber foot pad (22), a fixed arm (23) and a fixed base plate (24); the light source (1) is connected to the fixed arm (23); the rubber foot pad (22) is not less than four; the table (21) and the rubber foot pad (22) are tightly connected; the table (21) and the fixed base plate (24) are connected; the fixed arm (23) and the fixed base plate (24) are connected; the fixed arm (23) comprises a long arm (231) and a short arm (232); two long arms (231) are provided; two short arms (232) are provided; the two long arms (231) are connected to the fixed base plate (24); the light source (1) and the two long arms (231) are connected to each other; The short arm (232) is connected to a fixed base plate (24) on opposite sides, the fixed base plate (24) comprises a first fixed plate (241) and a second fixed plate (242), the first fixed plate (241) is connected to the long arm (231), the second fixed plate (242) is connected to the short arm (232), the table (21) is connected to the loading mechanism (4), the table (21) is connected to the rolling angle fixture (5), the fixed arm (23) is connected to the detection mechanism (6), the fixed arm (23) is connected to the injection mechanism (3), the second fixed plate (242) is connected to the detection mechanism (6), and the first fixed plate (241) is connected to the injection mechanism (3).

3. A multi-angle adjustable contact angle and rolling angle test fixture according to claim 2, Features: The injection mechanism (3) comprises an injection needle (31) and an injection drive device (32); the injection needle (31) has an internal hollow structure; the injection needle (31) and the injection drive device (32) are connected; the injection drive device (32) comprises a hydraulic cylinder (321), a push plate (322), a needle push rod (323) and a limit plate (324); the limit plate (324) and the hydraulic cylinder (321) are tightly connected; the output end of the hydraulic cylinder (321) and the push plate (322) are tightly connected; a side of the push plate (322) away from the hydraulic cylinder (321) is tightly connected to the needle push rod (323); an end of the needle push rod (323) away from the push plate (322) extends into the injection needle (31); and the needle push rod (323) and the inner wall of the injection needle (31) are slidably connected.

4. A multi-angle adjustable contact angle and rolling angle test fixture according to claim 3, Features: The injection mechanism (3) further comprises an injection moving device (33) and a needle tube fixing device (34), the injection needle (31) is connected to the needle tube fixing device (34), the injection drive device (32) is connected to the injection moving device (33), the injection drive device (32) is connected to the needle tube fixing device (34), the first fixed plate (241) is connected to the injection moving device (33), the limit plate (324) is connected to the injection moving device (33), the limit plate (324) is connected to the needle tube fixing device (34), the injection moving device (33) comprises a first fixed bottom plate (331), a first screw rod (332), a first fixed block (333) and a first sliding block (334), two first fixed blocks (333) are provided, the two first fixed blocks (333) and the first fixed bottom plate (331) are fastened together, the first screw rod (332) is provided with a plurality of first screw rods (332), two ends of the first screw rod (332) and The two first fixed blocks (333) are fastened together, the first sliding block (334) is provided with a plurality of through holes, the first sliding block (334) and the first screw rod (332) are slidably connected, the injection moving device (33) is provided with two groups, the two groups of the injection moving devices (33) are perpendicular to each other, the first sliding block (334) of the first group is fastened together with the first fixed base plate (331) of the second group, the first fixed base plate (331) of the first group is fastened together with the first fixed plate (241), the limiting plate (324) is fastened together with the first sliding block (334) of the second group of injection moving devices (33), the needle tube fixing device (34) comprises an injection fixing head (341) and a plastic needle tube clamp (342), a fixing groove is provided in the injection fixing head (341), the plastic needle tube clamp (342) and the fixing groove of the injection fixing head (341) are fastened together, and the injection fixing head (341) and the limiting plate (324) are fastened together.

5. A multi-angle adjustable contact angle and rolling angle test fixture according to claim 4, Features: The object-carrying mechanism (4) comprises an object-carrying platform (41), a handle screw (42) and a clamping block (43); the object-carrying platform (41) is connected to the rolling angle fixture (5); two clamping blocks (43) are provided, and the two clamping blocks (43) are placed on the object-carrying platform (41); the number of the handle screws (42) is not less than four, and the four handle screws (42) are divided into two groups, and one group of handle screws (42) is used to fasten and connect the clamping block (43) and the object-carrying platform (41).

6. A multi-angle adjustable contact angle and rolling angle test fixture according to claim 5, Features: The rolling angle jig (5) comprises a rotating gear (51), a transmission gear (52), a rotating bearing (53), a jig mounting bracket (54) and a lifting device (55); the lifting device (55) is connected to a table (21); the jig mounting bracket (54) is connected to the lifting device (55) via a flat plate; the jig mounting bracket (54) is transmission-connected to the rotating gear (51); the rotating gear (51) and the transmission gear (52) are meshed; the transmission gear (52) and the rotating bearing (53) are transmission-connected via a transmission bearing; the rotating bearing (53) and the hand wheel are transmission-connected via a worm gear; and a surface of the rotating gear (51) close to the object-carrying mechanism (4) is fastened to the object-carrying mechanism (4) via a connecting seat, a lifting platform and the object-carrying mechanism (4).

7. The multi-angle adjustable contact angle and rolling angle test fixture according to claim 1, Features: The detection mechanism (6) comprises a photoelectric sensor (61), a drive motor (62), a driving gear (63), a driven gear (64), an angle scale plate (65) and a sensor moving device (66); the photoelectric sensor (61) and the sensor moving device (66) are connected; the drive motor (62) and the second fixed plate (242) are tightly connected; the output end of the drive motor (62) and the driving gear (63) are tightly connected; the driving gear (63) and the driven gear (64) are meshed; the driven gear (64) is tightly connected to the second fixed plate (242) via a fixed rod; the angle scale plate (65) is sleeved outside the driven gear (64); the angle scale plate (65) is tightly connected to the second fixed plate (242); the driven gear (64) is provided with The pointer points to the angle scale plate (65); the sensor moving device (66) comprises a second fixed base plate (661), a second screw rod (662), a second fixed block (663), and a second sliding block (664); the photoelectric sensor (61) and the second sliding block (664) are fastened together; the second fixed base plate (661) and the second fixed plate (242) are fastened together; two second fixed blocks (663) are provided, and the two second fixed blocks (663) and the second fixed base plate (661) are fastened together; a plurality of second screw rods (662) are provided, and both ends of the second screw rod (662) are fastened together with the two second fixed blocks (663); a plurality of through holes are provided in the second sliding block (664), and the second sliding block (664) and the second screw rod (662) are slidably connected together.

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