Polyurethane adhesive bond strength testing device for ease of sequential multiple testing

Abstract

The utility model discloses polyurethane mucilage adhesion test device convenient to continuous multiple test, including base, mounting bracket, clamping mechanical hand, movable sleeve, falling stick, prevent falling cylinder, pressure sensor, plastic bag and control device, the base is fixed with mounting bracket, and the top of mounting bracket is a horizontally arranged support plate, and the support plate is equipped with a vertical setting positioning hole, movable sleeve is matched with positioning hole, and movable sleeve vertically passes through positioning hole, and a circle of fender ring is equipped on movable sleeve outer wall, and fender ring lower end surface bears against the upper end surface of support plate, the utility model discloses through placing movable sleeve on support plate, and plastic bag stretches into the area surrounded by prevent falling cylinder, and plastic bag bottom is contacted with pressure sensor, and the outward flanging of plastic bag upper portion surrounds prevent falling cylinder, so that after one test, through quick replacement movable sleeve and plastic bag can make the device continue next test, can effectively improve the test efficiency when continuous multiple test.

Description

Technical Field

[0001] This utility model relates to the technical field of polyurethane adhesives, and in particular to the technical field of adhesive force testing devices. Background Technology

[0002] Polyurethane adhesives are adhesives containing urethane or isocyanate groups in their molecular chains. They are broadly classified into polyisocyanates and polyurethanes. Polyisocyanates, containing isocyanate and urethane groups, exhibit high reactivity and polarity, resulting in excellent chemical adhesion to substrates containing active hydrogen, such as porous materials like foams, plastics, wood, leather, fabrics, paper, and ceramics, as well as smooth-surfaced materials like metals, glass, rubber, and plastics. Polyurethane adhesives are a crucial component of the rapidly developing polyurethane resin industry, possessing superior performance and wide applications. They exhibit excellent shear strength and impact resistance, making them suitable for various structural bonding applications, and also possess excellent flexibility. Adhesives require performance testing, with adhesion testing being a critical component.

[0003] Existing patent CN212540091U discloses a polyurethane adhesive adhesion force testing device, including a base with a cavity containing a contact sensor; a bottom plate on the base with a through-tube aligned with the contact sensor; a positioning frame on the bottom plate with a positioning tube aligned with the sleeve; and a dropper that passes through the positioning tube and the sleeve and falls under gravity; a gap for accommodating adhesive is provided between the outer wall of the dropper and the inner wall of the sleeve. The device requires cleaning after each test before the next test can be performed, resulting in a long interval between tests and low testing efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art and to propose a polyurethane adhesive adhesion force testing device that facilitates continuous multiple tests. After one test is completed, the next test can be performed quickly without cleaning the device, which can effectively improve the testing efficiency of continuous multiple tests.

[0005] To achieve the above objectives, this utility model proposes a polyurethane adhesive adhesion strength testing device that facilitates continuous multiple tests. The device includes a base, a mounting frame, a clamping manipulator, a movable sleeve, a falling rod, an anti-tipping cylinder, a pressure sensor, a plastic bag, and a control device. The mounting frame is fixed on the base, and the top of the mounting frame is a horizontally positioned support plate with a vertically positioned positioning hole. The movable sleeve mates with the positioning hole, passing vertically through it. A retaining ring is provided on the outer wall of the movable sleeve, with its lower end abutting against the upper end of the support plate. The falling rod consists of a rod, a positioning block, and a base plate connected sequentially from top to bottom. The rod is vertically inserted into the movable sleeve, and a gap for accommodating polyurethane adhesive is provided between the outer wall of the rod and the inner wall of the movable sleeve. The positioning block... The device is shaped like an inverted frustum of a cone, wider at the top and narrower at the bottom. The outer diameter of the base plate is larger than the maximum outer diameter of the positioning block. A gripping robot is mounted on the mounting frame, with two grippers on the gripper. Each gripper has a gripping groove adapted to the positioning block, and the two grippers together grip the middle of the positioning block. A pressure sensor is mounted on the base, located directly below the falling bar. An anti-tipping cylinder is fixed on the base, surrounding the pressure sensor. A plastic bag extends into the area surrounded by the anti-tipping cylinder, with the bottom of the plastic bag in contact with the pressure sensor and the top of the plastic bag folded outward to surround the anti-tipping cylinder. A control device is mounted on the base, controlling the gripping robot. The pressure sensor is electrically connected to the control device, which has a timing function.

[0006] Preferably, the base is equipped with several height-adjustable support feet at its bottom, and a level is fixed on the base.

[0007] Preferably, the top end of the insertion rod is flush with the top end of the movable sleeve.

[0008] Preferably, two twisting wings are fixed on the outer wall of the movable sleeve.

[0009] Preferably, the insertion rod, positioning block, and base plate are on the same vertical central axis.

[0010] Preferably, a retaining ring is fixed to the upper end face of the positioning block, the retaining ring surrounds the insertion rod, and an annular adhesive groove is formed between the retaining ring and the insertion rod.

[0011] Preferably, the inner side of the positioning hole is a wear-resistant sleeve.

[0012] The beneficial effects of this utility model are as follows: By placing the movable sleeve on the support plate and inserting the plastic bag into the area enclosed by the anti-tipping cylinder, with the bottom of the plastic bag in contact with the pressure sensor and the upper part of the plastic bag folded outward to surround the anti-tipping cylinder, the device can continue to the next test by quickly replacing the movable sleeve and the plastic bag after one test, which can effectively improve the testing efficiency when conducting multiple consecutive tests.

[0013] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a front view of the polyurethane adhesive adhesion testing device of this utility model, which facilitates continuous and repeated testing.

[0015] In the diagram: 1-base, 2-mounting bracket, 3-movable sleeve, 4-falling bar, 10-height adjustment support foot, 11-control device, 12-level, 15-pressure sensor, 16-anti-tipping cylinder, 17-plastic bag, 20-support plate, 21-positioning hole, 22-wear-resistant sleeve, 25-clamping robot arm, 26-gripper, 30-retaining ring, 31-twisting wing, 41-insertion rod, 42-positioning block, 43-base plate, 45-retaining ring. Detailed Implementation

[0016] Example 1: See Figure 1 This utility model discloses a polyurethane adhesive adhesion force testing device that facilitates continuous and repeated testing. It includes a base 1, a mounting frame 2, a clamping manipulator 25, a movable sleeve 3, a falling rod 4, an anti-tipping cylinder 16, a pressure sensor 15, a plastic bag 17, and a control device 11. The mounting frame 2 is fixed on the base 1. The top of the mounting frame 2 is a horizontally arranged support plate 20. The support plate 20 has a vertically arranged positioning hole 21. The movable sleeve 3 cooperates with the positioning hole 21 and passes vertically through the positioning hole 21. A retaining ring 30 is provided on the outer wall of the movable sleeve 3, and the lower end face of the retaining ring 30 abuts against the upper end face of the support plate 20.

[0017] The falling rod 4 is composed of a rod 41, a positioning block 42, and a base plate 43 connected sequentially from top to bottom. The rod 41 is vertically inserted into the movable sleeve 3. There is a gap between the outer wall of the rod 41 and the inner wall of the movable sleeve 3 to accommodate polyurethane adhesive. The positioning block 42 is an inverted frustum-shaped cone with a larger top and a smaller bottom. The outer diameter of the base plate 43 is larger than the maximum outer diameter of the positioning block 42. The rod 41, the positioning block 42, and the base plate 43 are on the same vertical central axis.

[0018] The mounting frame 2 is equipped with a clamping robot 25, which has two grippers 26. The two grippers 26 are provided with clamping grooves that are adapted to the positioning block 42. The two grippers 26 together clamp the middle part of the positioning block 42.

[0019] A pressure sensor 15 is installed on the base 1, and the pressure sensor 15 is located directly below the falling rod 4. An anti-tipping cylinder 16 is fixed on the base 1, and the anti-tipping cylinder 16 surrounds the pressure sensor 15. The plastic bag 17 extends into the area surrounded by the anti-tipping cylinder 16, and the bottom of the plastic bag 17 contacts the pressure sensor 15. The upper part of the plastic bag 17 is turned outward to surround the anti-tipping cylinder 16.

[0020] A control device 11 is installed on the base 1. The gripping robot 25 is controlled by the control device 11. The pressure sensor 15 is electrically connected to the control device 11. The control device 11 has a timing function and a start button.

[0021] To avoid wear of the positioning hole 21 due to frequent replacement of the movable sleeve 3, the inner side of the positioning hole 21 is a wear-resistant sleeve 22.

[0022] To ensure that the device is in a horizontal position during use, several height-adjustable support feet 10 are installed at the bottom of the base 1, and a level 12 is fixed on the base 1.

[0023] To ensure the accuracy of the test, the top end of the insertion rod 41 is flush with the top end of the movable sleeve 3.

[0024] In order to allow the movable sleeve 3 to rotate easily, two twisting wings 31 are fixed on the outer wall of the movable sleeve 3.

[0025] Example 2: To prevent adhesive from dripping from the drop bar 4, a retaining ring 45 is fixed to the upper end face of the positioning block 42. The retaining ring 45 surrounds the insertion rod 41, and an annular adhesive groove is formed between the retaining ring 45 and the insertion rod 41.

[0026] The working process of this utility model: This utility model provides a polyurethane adhesive bonding force testing device that facilitates continuous and repeated testing. During operation, after leveling the device, polyurethane adhesive is applied to the inside of the movable sleeve 3. Then, the insertion rod 41 of the falling rod 4 is inserted into the movable sleeve 3 from bottom to top. The clamping manipulator 25 then holds the falling rod 4. The movable sleeve 3 is rotated to evenly distribute the polyurethane adhesive in the gap between the insertion rod 41 and the movable sleeve 3. The start button on the control device 11 is then pressed, and the clamping manipulator 25 releases the falling rod 4. Simultaneously, the control device 11 starts timing. The falling rod 4 will drop and impact the pressure sensor 15. The force sensed by the impact will increase dramatically, and the control device 11 will stop timing. The bonding force can be evaluated based on the falling time and weight of the falling rod 4.

[0027] After each test, remove the plastic bag 17 along with the falling rod 4, remove the movable sleeve 3, and then replace it with a new plastic bag 17, movable sleeve 3, and falling rod 4. The next test can then be conducted immediately, allowing the device to be used for multiple consecutive tests. The plastic bag 17 is discarded after each test. The movable sleeve 3 and falling rod 4 can be cleaned together after all tests are completed, or they can be cleaned by other personnel during the testing process.

[0028] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A polyurethane adhesive adhesion strength testing device that facilitates continuous and repeated testing, characterized in that: The system includes a base (1), a mounting frame (2), a gripping robot (25), a movable sleeve (3), a falling bar (4), an anti-tipping cylinder (16), a pressure sensor (15), a plastic bag (17), and a control device (11). The mounting frame (2) is fixed on the base (1). The top of the mounting frame (2) is a horizontally arranged support plate (20). The support plate (20) has a vertically arranged positioning hole (21). The movable sleeve (3) cooperates with the positioning hole (21) and passes vertically through it. The positioning hole (21) has a retaining ring (30) on the outer wall of the movable sleeve (3). The lower end face of the retaining ring (30) abuts against the upper end face of the support plate (20). The falling rod (4) is composed of a rod (41), a positioning block (42), and a base plate (43) connected from top to bottom. The rod (41) is vertically inserted into the movable sleeve (3). There is a gap between the outer wall of the rod (41) and the inner wall of the movable sleeve (3) to accommodate polyurethane adhesive. The positioning block (42) is an inverted truncated cone shape with a larger upper part and a smaller lower part. The outer side of the base plate (43) is... The diameter is larger than the maximum outer diameter of the positioning block (42). A clamping robot (25) is installed on the mounting frame (2). Two grippers (26) are installed on the clamping robot (25). The two grippers (26) are provided with clamping grooves that are adapted to the positioning block (42). The two grippers (26) clamp the middle part of the positioning block (42) together. A pressure sensor (15) is installed on the base (1). The pressure sensor (15) is located directly below the falling rod (4). An anti-tipping cylinder is fixed on the base (1). 16), the anti-tipping cylinder (16) surrounds the pressure sensor (15), the plastic bag (17) extends into the area surrounded by the anti-tipping cylinder (16), the bottom of the plastic bag (17) is in contact with the pressure sensor (15), the upper part of the plastic bag (17) is turned outward to surround the anti-tipping cylinder (16), the base (1) is equipped with a control device (11), the clamping manipulator (25) is controlled by the control device (11), the pressure sensor (15) is electrically connected to the control device (11), and the control device (11) has a timing function.

2. The polyurethane adhesive bonding strength testing device as described in claim 1, which facilitates continuous multiple tests, is characterized in that: The base (1) has several height-adjustable support feet (10) installed at the bottom, and a level (12) is fixed on the base (1).

3. The polyurethane adhesive bonding strength testing device as described in claim 1, which facilitates continuous multiple tests, is characterized in that: The top end of the insertion rod (41) is flush with the top end of the movable sleeve (3).

4. The polyurethane adhesive bonding strength testing device as described in claim 1, which facilitates continuous multiple tests, is characterized in that: Two twisting wings (31) are fixed on the outer wall of the movable sleeve (3).

5. The polyurethane adhesive adhesion testing device as described in claim 1, which facilitates continuous multiple tests, is characterized in that: The insertion rod (41), positioning block (42) and base plate (43) are on the same vertical central axis.

6. The polyurethane adhesive bonding strength testing device as described in claim 1, which facilitates continuous multiple tests, is characterized in that: A retaining ring (45) is fixed on the upper end face of the positioning block (42). The retaining ring (45) surrounds the insert rod (41), and an annular adhesive groove is formed between the retaining ring (45) and the insert rod (41).

7. The polyurethane adhesive bonding strength testing device as described in any one of claims 1-6, which facilitates continuous multiple tests, is characterized in that: The inner side of the positioning hole (21) is a wear-resistant sleeve (22).

Images