Self-adhesive enameled wire bonding force test tool and test method

Abstract

The application discloses a kind of self-adhesive enameled wire bonding force test tool and test method, it is related to self-adhesive enameled wire bonding force test technical field, including bottom plate, including, drive mechanism is fixedly connected to the top of bottom plate, including fixedly connected to the top of bottom plate lifting assembly, lifting assembly is installed on connecting plate, and load cell is installed in the bottom of connecting plate;And, fixed mechanism is installed on drive mechanism and bottom plate, including fixedly connected to the top of bottom plate lower plate.The application can be protective fixed to coil under the cooperation of fixed mechanism in drive mechanism, prevent the contact mode of traditional clamp and coil to easily cause local stress concentration, aggravate the risk of deformation, automatically complete fixed before testing, automatically unlock fixed after testing is completed, reduce coil test replacement step, improve test efficiency, not only need manual clamping, while avoiding the problem that artificial operation is difficult to guarantee the consistency of clamping force.

Description

Technical Field

[0001] This invention relates to the field of self-adhesive enameled wire bonding strength testing technology, and in particular to the testing fixture and method for self-adhesive enameled wire bonding strength testing. Background Technology

[0002] Frameless self-adhesive enameled wire is made by winding enameled wire on a mold. The self-adhesive coating is bonded together by baking or direct electric heating of the coil. After cooling, it is demolded and fixed. Its simple molding process is widely used in various industries. The bonding strength of the frameless self-adhesive enameled wire plays a crucial role. If the bonding strength is too weak, the enameled wire will crack and deform. Testing fixtures are required when testing the bonding strength of self-adhesive enameled wire.

[0003] However, in practical applications, there are still some unresolved problems. The following are some common problems with self-adhesive enameled wire bonding strength testing fixtures: In existing technologies, the coil is often clamped at both ends by a clamp and then pulled for testing. When the clamping force is too large, it can easily cause deformation of the frameless coil, affecting the authenticity of the bonding strength test results. When the clamping force is too small, the coil is easy to loosen during the test pulling process, causing the test to be interrupted or fail. In addition, manual clamping is required, and manual release is required after the test is completed. The operation is cumbersome and inconvenient, which significantly reduces the efficiency of the test. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned self-adhesive enameled wire adhesion testing fixtures, the present invention is proposed.

[0005] Therefore, the problem to be solved by this invention is how to address the issue that the traditional contact method between the clamp and the coil easily leads to local stress concentration, exacerbates the risk of deformation, requires manual clamping and unlocking, which is cumbersome and inconvenient, and significantly reduces testing efficiency.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a fixture and method for testing the adhesion strength of self-adhesive enameled wire, including a base plate, comprising,

[0007] A drive mechanism, fixedly connected to the top of the base plate, includes a lifting assembly fixedly connected to the top of the base plate, a connecting plate mounted on the lifting assembly, and a force gauge mounted on the bottom of the connecting plate; and...

[0008] A fixing mechanism is installed on the drive mechanism and the base plate, including a lower plate fixedly connected to the top of the base plate, an upper plate fixedly connected to the lower end of the force gauge, airbags installed on both the upper and lower plates, a connecting hole opened at the top of the upper plate, an inflation component installed on the lifting assembly, the lower plate and the upper plate, and an exhaust component installed on the lifting assembly and disposed on the inflation component.

[0009] As a preferred embodiment of the self-adhesive enameled wire adhesion strength testing fixture of the present invention, the lifting assembly includes a housing fixedly connected to the top of the base plate, a motor fixedly connected to the top of the housing, a lead screw fixedly connected to the output shaft of the motor, the lower end of the lead screw being rotatably connected to the inner wall of the housing, a moving block being threadedly connected to the surface of the lead screw, a guide plate being fixedly connected to one end of the moving block, and a guide hole being provided on the guide plate.

[0010] As a preferred embodiment of the self-adhesive enameled wire adhesion strength testing fixture of the present invention, wherein: a cylinder is fixedly connected to one end surface of the movable block, a movable frame is sleeved on the surface of the cylinder, a lever is fixedly connected to one end of the cylinder, a T-shaped block is fixedly connected to one side of the movable frame, a T-shaped groove that mates with the T-shaped block is opened on one side of the housing, the T-shaped block is slidably connected in the T-shaped groove, and the connecting plate is fixedly connected to the surface of the movable frame.

[0011] As a preferred embodiment of the self-adhesive enameled wire adhesion strength testing fixture of the present invention, the inflatable component includes an opening and closing element fixedly connected to the housing, an air pump fixedly connected to the housing and its output end connected to the opening and closing element, a first flexible hose connected to the opening and closing element, a safety valve connected to one end of the first flexible hose, a second flexible hose connected to one end of the safety valve, a circular cover fixedly connected to the top of the upper plate and fitted onto the lower end of the force gauge, the second flexible hose connected to the lower plate and the circular cover respectively, and a third flexible hose connected between the exhaust component and the circular cover.

[0012] As a preferred embodiment of the self-adhesive enameled wire adhesion strength testing fixture of the present invention, the opening and closing component includes a valve body fixedly connected to the housing, a valve core slidably connected to the inner wall of the valve body, a valve stem slidably connected to the valve body, and one end of the valve stem being fixedly connected to the valve core; a short column being fixedly connected to the other end of the valve stem and slidably connected to the guide hole; the output end of the air pump being connected to the valve body; and one end of the first hose being connected to the valve body.

[0013] As a preferred embodiment of the self-adhesive enameled wire adhesion strength testing fixture of the present invention, the venting assembly includes an opening and closing component fixedly connected to the housing, an unlocking component fixedly connected to the housing and cooperating with the opening and closing component, the opening and closing component includes a cylinder fixedly connected to the housing, one end of the third flexible tube communicating with the cylinder, an venting hole being provided on the cylinder, a piston being slidably connected inside the cylinder, a circular hole being provided on the piston, a square rod being slidably connected to the cylinder, one end of which is fixedly connected to the piston surface, and the other end of which is fixedly connected to a circular block, a first spring being sleeved on the surface of the square rod, and both ends of which are fixedly connected to the circular block and the surface of the cylinder, respectively.

[0014] As a preferred embodiment of the self-adhesive enameled wire bonding force testing fixture of the present invention, the unlocking component includes a fixing rod fixedly connected to the housing, a driving plate rotatably connected to the surface of the fixing rod, a connecting rod fixedly connected to the surface of the driving plate, a pressing plate fixedly connected to one end of the connecting rod and cooperating with a round block, a torsion spring sleeved on one end of the fixing rod, and its two ends fixedly connected to the driving plate and the surface of the fixing rod respectively.

[0015] As a preferred embodiment of the self-adhesive enameled wire adhesion strength testing fixture of the present invention, wherein: a trigger element is installed on the surface of the housing and the short column, including a first short block fixedly connected to one end of the short column, a first conductive sheet fixedly connected to the first short block, a long rod fixedly connected to the housing, a vertical plate fixedly connected to one end of the long rod, a spline rod slidably connected to the vertical plate, a second short block fixedly connected to one end of the spline rod, a second conductive sheet fixedly connected to the second short block, a second spring sleeved on the surface of the spline rod, and its two ends fixedly connected to the vertical plate and the second short block respectively, and a limit block fixedly connected to the other end of the spline rod.

[0016] As a preferred embodiment of the self-adhesive enameled wire adhesion strength testing fixture of the present invention, a cover is fixedly connected to the surface of the housing, and a control panel is fixedly connected to one side of the housing.

[0017] As a preferred embodiment of the test method of the self-adhesive enameled wire bonding force test fixture of the present invention, wherein: a straightened sample is wound on a polished round bar to form a spiral coil, then a load is applied to press it, and it is bonded under heat. After bonding, the coil sample is removed from the round bar and placed on the lower air bag and placed on the lower plate.

[0018] The operation of the lifting assembly is controlled by first moving it down, moving the connecting plate, force gauge, upper plate and upper airbag down, inserting the upper airbag into the upper end of the coil, and after insertion, the trigger is energized to turn on the air pump, and at the same time the opening and closing device is opened, so that the gas is delivered to the two airbags through the first hose and the second hose for inflation and expansion, and the two ends of the coil are fixed.

[0019] Then, the lifting assembly is controlled to move upward. After inflation is complete, the trigger is de-energized, the air pump stops running, and the opening and closing mechanism closes. During the upward movement, the force gauge performs a tensile test on the self-adhesive enameled wire. After the test is completed, the reset lever activates the exhaust assembly, and the airbag discharges excess gas, allowing its surface to align with the inner surface of the coil, thereby releasing the coil from its fixation and making it easy to remove.

[0020] The beneficial effects of this invention are as follows: the fixing mechanism, in cooperation with the driving mechanism, can protect the coil and prevent the traditional clamping method from causing local stress concentration and increasing the risk of deformation. The fixing is completed automatically before the test and automatically unlocked after the test, reducing the number of coil testing and replacement steps and improving testing efficiency. It not only eliminates the need for manual clamping, but also avoids the problem of inconsistent clamping force that is difficult to ensure during manual operation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A three-dimensional structural diagram of the fixture and testing method for testing the adhesion strength of self-adhesive enameled wire.

[0023] Figure 2 A partial three-dimensional structural diagram of the fixture and testing method for testing the adhesion strength of self-adhesive enameled wire.

[0024] Figure 3 Fixtures and testing methods for testing the adhesion strength of self-adhesive enameled wires. Figure 2 A magnified structural diagram of A in the middle.

[0025] Figure 4 A cross-sectional plan view of the housing structure of the fixture and testing method for testing the adhesion strength of self-adhesive enameled wire.

[0026] Figure 5 An exploded three-dimensional structural diagram of the housing, moving block, and moving frame of the fixture and testing method for testing the adhesion strength of self-adhesive enameled wire.

[0027] Figure 6 A three-dimensional cross-sectional view of the lower plate of the fixture and testing method for testing the adhesion strength of self-adhesive enameled wire.

[0028] Figure 7 Fixtures and testing methods for testing the adhesion strength of self-adhesive enameled wires. Figure 6 Enlarged structural diagram of B in the middle.

[0029] Figure 8 A three-dimensional cross-sectional view of the upper plate of the fixture and testing method for testing the adhesion of self-adhesive enameled wire.

[0030] Figure 9 Fixtures and testing methods for testing the adhesion strength of self-adhesive enameled wires. Figure 8 A magnified structural diagram of C.

[0031] Figure 10A cross-sectional plan view of the opening and closing components of the fixture and testing method for testing the adhesion strength of self-adhesive enameled wire.

[0032] Figure 11 A cross-sectional plan view of the opening and closing components of the fixture and testing method for testing the adhesion of self-adhesive enameled wire.

[0033] Figure 12 Diagram showing the structural changes of the opening / closing and unlocking components in the fixture and testing method for testing the adhesion strength of self-adhesive enameled wire.

[0034] Figure 13 A three-dimensional structural diagram of the trigger element for testing the adhesion strength of self-adhesive enameled wire.

[0035] In the diagram: 1. Base plate; 2. Drive mechanism; 21. Lifting assembly; 22. Connecting plate; 23. Force gauge; 3. Fixing mechanism; 31. Lower plate; 32. Airbag; 33. Upper plate; 34. Connecting hole; 35. Inflation assembly; 36. Exhaust assembly; 37. Trigger; 38. Stabilizer; 39. Support plate; 4. Cover; 5. Control panel; 21-1. Housing; 21-2. Motor; 21-3. Lead screw 21-4. Moving block; 21-5. Guide plate; 21-6. Guide hole; 21-7. Cylindrical component; 21-8. Moving frame; 21-9. Lever; 21-10. T-block; 21-11. T-slot; 35-1. Opening and closing component; 35-2. Air pump; 35-3. First hose; 35-4. Safety valve; 35-5. Second hose; 35-6. Circular cover; 35-7. Third hose; 35-11. Valve body; 35-12, Valve core; 35-13, Valve stem; 35-14, Short column; 36-1, Opening and closing element; 36-2, Unlocking element; 36-11, Cylinder; 36-12, Exhaust port; 36-13, Piston; 36-14, Round hole; 36-15, Square rod; 36-16, Round block; 36-17, First spring; 36-21, Fixed rod; 36-22, Drive plate; 36-23, Connecting rod. Connecting rod; 36-24, extrusion plate; 36-25, torsion spring; 37-1, first short block; 37-2, first conductive sheet; 37-3, long rod; 37-4, vertical plate; 37-5, spline rod; 37-6, second short block; 37-7, second conductive sheet; 37-8, second spring; 37-9, limiting block; 38-1, connecting cylinder; 38-2, connecting hole; 38-3, round tube; 38-4, bolt rod. Detailed Implementation

[0036] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0038] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0039] Example 1

[0040] Reference Figures 1-3 This is the first embodiment of the present invention. This embodiment provides a self-adhesive enameled wire adhesion test fixture and test method. The self-adhesive enameled wire adhesion test fixture and test method include a base plate 1, a driving mechanism 2 and a fixing mechanism 3. With the cooperation of the driving mechanism 2, the fixing mechanism 3 can protect and fix the coil. The fixing is automatically completed before the test and automatically unlocked after the test, reducing the number of coil testing and replacement steps.

[0041] Specifically, the drive mechanism 2 is fixedly connected to the top of the base plate 1, including a lifting assembly 21 fixedly connected to the top of the base plate 1, a connecting plate 22 is installed on the lifting assembly 21, and a force gauge 23 is installed at the bottom of the connecting plate 22.

[0042] The lifting assembly 21 enables the connecting plate 22 to move up and down, thereby driving the force gauge 23 to test the bonding force of the fixed self-adhesive enameled wire coil. The force gauge 23 can perform numerical testing of the bonding force of the self-adhesive enameled wire, which is existing technology. The working principle of this part is also existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here.

[0043] Specifically, the fixing mechanism 3 is installed on the drive mechanism 2 and the base plate 1, including a lower plate 31 fixedly connected to the top of the base plate 1, an upper plate 33 fixedly connected to the lower end of the force gauge 23, and airbags 32 installed on both the upper plate 33 and the lower plate 31. The upper plate 33 and the lower plate 31 have the same size and specifications. The lower plate 31 facilitates the support of the coil initially fitted onto the lower airbag 32. There are two airbags 32, which are fixedly connected to the top of the lower plate 31 and the bottom of the upper plate 33, respectively. With the lower airbag 32 in place, it ensures a vertical and normal state under its own elasticity and plasticity without active inflation. When the coil is placed on the lower plate 31 and fitted onto its surface, it plays a limiting role for the coil, making it easier for the upper airbag 32 to be inserted into the spiral coil when the upper plate 33 moves down and drives the airbag 32 on it to move down.

[0044] Then, under the inflating action of the two airbags 32, the two ends of the coil are fixed, avoiding the coil deformation and loosening during the adhesion force test caused by the conventional external clamping method. The inflating airbags 32 also support and fix the coil from the inside out, which protects the coil and makes it less prone to deformation. During the adhesion force test, the two ends are fully fixed. After the test is completed and the coil is reset, the airbags 32 actively deflate and detach from the coil, making it easy for the operator to remove.

[0045] The top of the upper plate 33 has a connecting hole 34, and multiple connecting holes 34 are provided on the upper plate 33 so that the inflation component 35 can deliver air to the airbag 32 below the upper plate 33 when it is inflated. The surface of the airbag 32 is provided with anti-slip texture to improve the fixation effect after inflation. The inflation component 35 is installed on the lifting component 21, the lower plate 31 and the upper plate 33. The deflation component 36 is installed on the lifting component 21 and is set on the inflation component 35.

[0046] With the inflation component 35, after the upper airbag 32 is inserted into the coil, the two airbags 32 can be inflated to fix the two ends of the coil. As the upper airbag 32 gradually moves upward, the bonding force of the self-adhesive enameled wire coil is tested with the help of the force gauge 23. After the self-adhesive enameled wire bonding force test is completed and the lifting component 21 is reset, the deflation operation is realized through the venting component 36, so that the excess gas in the airbag 32 after inflation is discharged, and it returns to the initial state, making it easy to remove the coil from the two airbags 32.

[0047] Example 2

[0048] Reference Figures 2 to 10 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0049] Specifically, the lifting assembly 21 includes a housing 21-1 fixedly connected to the top of the base plate 1. A motor 21-2 is fixedly connected to the top of the housing 21-1. A lead screw 21-3 is fixedly connected to the output shaft of the motor 21-2. The lower end of the lead screw 21-3 is rotatably connected to the inner wall of the housing 21-1. The lower end of the lead screw 21-3 is rotatably connected to the inner wall of the housing 21-1 through a bearing. The motor 21-2 is controlled to rotate through a relay. During the test, the lead screw 21-3 is driven accordingly. This is existing technology. The working principle of this part is also existing technology, which can be clearly understood by those skilled in the art and will not be described in detail here. A moving block 21-4 is threadedly connected to the surface of the lead screw 21-3. A guide plate 21-5 is fixedly connected to one end of the moving block 21-4. A guide hole 21-6 is opened on the guide plate 21-5.

[0050] The movable block 21-4 is threaded onto the surface of the lead screw 21-3. The rotation of the lead screw 21-3 causes the movable block 21-4 to move up and down. The guide hole 21-6 is divided into three parts. When the first and third parts, the short column 35-14, moves inside, the valve stem 35-13 and the first short block 37-1 will not move. When the second part, the short column 35-14, moves inside, the valve stem 35-13 and the second short block 37-6 can move, thereby realizing the opening and closing of the valve body 35-11 and the power supply and de-energization of the trigger 37, thereby realizing the opening and closing of the air pump 35-2 and the opening and closing of the channel, thus realizing the inflation and de-inflation operation of the airbag 32.

[0051] A cylinder 21-7 is fixedly connected to one end of the movable block 21-4. A movable frame 21-8 is fitted onto the surface of the cylinder 21-7. A lever 21-9 is fixedly connected to one end of the cylinder 21-7. A T-shaped block 21-10 is fixedly connected to one side of the movable frame 21-8. There are two cylinders 21-7 and two movable frames 21-8. Both cylinders 21-7 are fixedly connected to the movable block 21-4, and the two cylinders 21-7 are slidably connected to the two movable frames 21-8 respectively. A T-shaped groove 21-11 that mates with the T-shaped block 21-10 is opened on one side of the housing 21-1. The T-shaped block 21-10 is slidably connected to the T-shaped groove 21-11. A connecting plate 22 is fixedly connected to the surface of the movable frame 21-8.

[0052] The moving frame 21-8 is guided and limited by the T-block 21-10 and the T-slot 21-11. The motor 21-2 drives the lead screw 21-3 to rotate, causing the moving block 21-4 to descend, which in turn drives the cylinder 21-7 to move down. This causes the moving frame 21-8, the connecting plate 22, the T-block 21-10, the force gauge 23, the upper plate 33, and the upper airbag 32 to move down together. At this time, the guide plate 21-5 moves down with the moving block 21-4, causing the short column 35-14 to move in the first part of the guide hole 21-6. As the T-block 21-10 moves down, it moves to the bottom of the T-slot 21-11 and stops moving, so that the upper airbag 32 is just inserted into the upper end of the coil.

[0053] At this time, the moving block 21-4 can still move downward under the drive of the lead screw 21-3, so that the cylinder 21-7 moves within the moving frame 21-8. As the moving block 21-4 moves downward, the vertical plate 37-4 causes the short column 35-14 to move from the first part of the guide hole 21-6 through the second part to the third part and continue to move, so that the short column 35-14 and the valve stem 35-13 move, opening the valve body 35-11. At the same time, the trigger 37 contacts the power supply to the air pump 35-2, so that the gas is delivered through the valve body 35-11, the first hose 35-3 and the second hose 35-5 to the air bag 32 for inflation. The inflation stops when the cylinder 21-7 moves to the bottom of the moving frame 21-8.

[0054] Then, the lead screw 21-3 is rotated in the opposite direction, causing the moving block 21-4, guide plate 21-5, and cylinder 21-7 to move upwards, in the opposite direction to the downward movement. As the short column 35-14 moves from the third part through the second part to the first part of the guide hole 21-6, the valve body 35-11 and the air pump 35-2 are closed accordingly. The cylinder 21-7 then contacts the upper part of the moving frame 21-8. The column continues to move upwards, and under the action of the force gauge 23, the bonding force of the self-adhesive enameled wire is tested.

[0055] The inflation assembly 35 includes an opening and closing component 35-1 fixedly connected to the housing 21-1. An air pump 35-2 is fixedly connected to the housing 21-1, and its output end is connected to the opening and closing component 35-1. The opening and closing component 35-1 enables the connection and disconnection between the air pump 35-2 and the first hose 35-3. After the upper airbag 32 is lowered and inserted into the coil, the air pump 35-2 inflates the airbag. The opening and closing component 35-1 is connected to the first hose 35-3, and one end of the first hose 35-3 is connected to a safety valve 35-4. The safety valve 35-4 ensures a certain pressure when the airbag 32 is inflated, preventing the airbag 32 from continuously expanding and rupturing. It can release air in time, thus providing protection.

[0056] One end of the safety valve 35-4 is connected to a second hose 35-5. A circular cover 35-6 is fixedly connected to the top of the upper plate 33 and is fitted onto the lower end of the force gauge 23. Through the circular cover 35-6, gas passing through the second hose 35-5 enters into it and then enters the airbag 32 through the connecting hole 34. The second hose 35-5 is connected to the lower plate 31 and the circular cover 35-6 respectively. A third hose 35-7 is connected between the exhaust assembly 36 and the circular cover 35-6. The safety valve 35-4 is connected to the lower plate 31 and the circular cover 35-6 through the second hose 35-5, so that it is not affected even when the circular cover 35-6 moves. The circular cover 35-6 is connected to the cylinder 36-11 through the third hose 35-7, so that it is not affected even when the circular cover 35-6 moves.

[0057] The opening and closing component 35-1 includes a valve body 35-11 fixedly connected to the housing 21-1. A valve core 35-12 is slidably connected to the inner wall of the valve body 35-11. A valve stem 35-13 is slidably connected to the valve body 35-11, and one end of the stem is fixedly connected to the valve core 35-12. The valve stem 35-13 passes through the valve body 35-11 and is slidably connected to it. A sealing sleeve is provided between the valve core 35-12 and the valve body 35-11, and it is fitted onto the surface of the valve core 35-12. Through the setting of the sealing sleeve, when the valve core 35-12 closes the valve body 35-11, so that the air pump 35-2 is not connected to the first hose 35-3, it plays a sealing role to prevent air leakage.

[0058] A short column 35-14 is fixedly connected to the other end of the valve stem 35-13 and is slidably connected in the guide hole 21-6. The output end of the air pump 35-2 is connected to the valve body 35-11, and one end of the first hose 35-3 is connected to the valve body 35-11. Through the setting of the short column 35-14, it moves or remains stationary under the action of the guide hole 21-6 during the up and down movement of the guide plate 21-5. With the synchronous cooperation of the valve stem 35-13 and the valve core 35-12, the opening and closing operation of the valve body 35-11 is realized.

[0059] Example 3

[0060] Reference Figures 2 to 12 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0061] Specifically, the exhaust assembly 36 includes an opening / closing member 36-1 fixedly connected to the housing 21-1, and an unlocking member 36-2 fixedly connected to the housing 21-1, which cooperates with the opening / closing member 36-1. Through the setting of the opening / closing member 36-1 and the unlocking member 36-2, when the lever 21-9 is in the initial position, the unlocking member 36-2 is activated, causing the opening / closing member 36-1 to open, allowing the airbag 32 to communicate with the atmosphere, expelling excess gas and maintaining the same pressure as the atmosphere. At the same time, after the corresponding test is completed, the airbag 32 is reset, and the exhaust returns to its original shape, making it convenient to remove the coil after the test.

[0062] As lever 21-9 moves downward from its initial position, the rotating component of unlocking member 36-2 gradually releases its action on opening and closing member 36-1. Under the action of torsion spring 36-25 and first spring 36-17, unlocking member 36-2 resets and opening and closing member 36-1 closes. At this time, under the action of air pump 35-2, air can be inflated into airbag 32. When lever 21-9 moves upward and unlocking member 36-2 is rotated, it will not cause unlocking member 36-2 to act on opening and closing member 36-1. Until it is no longer acting, opening and closing member 36-1 will open. Only after the self-adhesive enameled wire adhesion test is completed and the unlocking member 36-2 is reset can it be pressed down to act on opening and closing member 36-1. After the test is completed, airbag 32 is reset to deflate and reshape.

[0063] The opening and closing component 36-1 includes a cylinder 36-11 fixedly connected to the housing 21-1. One end of the third hose 35-7 is connected to the cylinder 36-11. An exhaust hole 36-12 is provided on the cylinder 36-11. A piston 36-13 is slidably connected inside the cylinder 36-11. A circular hole 36-14 is provided on the piston 36-13. Through the arrangement of the exhaust hole 36-12 and the circular hole 36-14, when the piston 36-13 moves so that the circular hole 36-14 corresponds to the exhaust hole 36-12, the third hose 35-7 can be connected to the atmosphere, and the gas in the airbag 32 can be discharged.

[0064] A square rod 36-15 is slidably connected to the cylinder 36-11, with one end fixedly connected to the surface of the piston 36-13 and the other end fixedly connected to a round block 36-16. A first spring 36-17 is sleeved on the surface of the square rod 36-15, and its two ends are fixedly connected to the round block 36-16 and the surface of the cylinder 36-11, respectively. Through the first spring 36-17, when the round block 36-16 is pressed and moved by the pressing plate 36-24, the square rod 36-15 and the piston 36-13 move accordingly. When the first spring 36-17 is compressed, it generates elastic force. As the extrusion plate 36-24 gradually separates from the round block 36-16, it provides force for the reset of the round block 36-16, the square rod 36-15, and the piston 36-13. A sealing ring is provided between the piston 36-13 and the cylinder 36-11, and it is sleeved on the surface of the piston 36-13. When the piston 36-13 closes the cylinder 36-11, it seals the end of the third hose 35-7 connected to the cylinder 36-11 to prevent gas leakage.

[0065] The unlocking component 36-2 includes a fixing rod 36-21 fixedly connected to the housing 21-1. A drive plate 36-22 is rotatably connected to the surface of the fixing rod 36-21. A connecting rod 36-23 is fixedly connected to the surface of the drive plate 36-22. A pressing plate 36-24 is fixedly connected to one end of the connecting rod 36-23 and cooperates with the round block 36-16. The drive plate 36-22 and the pressing plate 36-24 are indirectly connected through the connecting rod 36-23. A torsion spring 36-25 is sleeved on one end of the fixing rod 36-21, and its two ends are fixedly connected to the surfaces of the drive plate 36-22 and the fixing rod 36-21, respectively.

[0066] The extrusion plate 36-24 has two parts. The first part, when it rotates and contacts the circular block 36-16, can move the circular block 36-16. The second part, when it rotates and contacts the circular block 36-16, will not move the circular block 36-16. The initial position of the lever 21-9 acts on the drive plate 36-22. At this time, the second part of the extrusion plate 36-24 contacts the circular block 36-16, corresponding to the opening of the opening and closing part 36-1. As the drive plate 36-22 moves down, it rotates and releases contact with the lever 21-9.

[0067] During this process, the second part of the rotating extrusion plate 36-24 contacts the circular block 36-16, preventing it from moving. Through the torsion spring 36-25, the drive plate 36-22 disengages from the lever 21-9 and resets, thereby causing the extrusion plate 36-24 and the connecting rod 36-23 to rotate and reset. Figure 12 In this state, the opening / closing element 36-1 is reset and closed under the action of the first spring 36-17. When the lever 21-9 moves upward after moving downward, as... Figure 12In the process, the drive plate 36-22 and the extrusion plate 36-24 are rotated counterclockwise by a certain angle, which does not affect the opening and closing part 36-1. They will be activated when the device is reset after subsequent testing, so that the opening and closing part 36-1 can be opened to release air.

[0068] Example 4

[0069] Reference Figures 1 to 13 This is the fourth embodiment of the present invention, which is based on the first three embodiments.

[0070] Specifically, trigger elements 37 are installed on the surfaces of the housing 21-1 and the short post 35-14, including a first short block 37-1 fixedly connected to one end of the short post 35-14, a first conductive sheet 37-2 fixedly connected to the first short block 37-1, a long rod 37-3 fixedly connected to the housing 21-1, a vertical plate 37-4 fixedly connected to one end of the long rod 37-3, a spline rod 37-5 slidably connected to the vertical plate 37-4, the spline rod 37-5 passing through the vertical plate 37-4 and slidably connected to it, and guiding and limiting the second short block 37-6 and the second conductive sheet 37-7 through the spline rod 37-5.

[0071] A second short block 37-6 is fixedly connected to one end of the spline rod 37-5. A second conductive piece 37-7 is fixedly connected to the second short block 37-6. The first conductive piece 37-2 and the second conductive piece 37-7 are connected in the circuit powered by the air pump 35-2. Through the setting of the first conductive piece 37-2 and the second conductive piece 37-7, when the first short block 37-1 moves with the short column 35-14, they contact or separate, thereby corresponding to the opening and closing of the opening and closing part 35-1. When the airbag 32 fixes the coil, the air pump 35-2 runs to inflate it. When the fixing is completed and it needs to be tested by pulling it up, the air pump 35-2 stops inflating the airbag 32, and the opening and closing part 35-1 closes at the same time.

[0072] A second spring 37-8 is fitted on the surface of the spline rod 37-5, and its two ends are fixedly connected to the vertical plate 37-4 and the second short block 37-6 respectively. With the setting of the second spring 37-8, the first conductive piece 37-2 moves with the first short block 37-1 and contacts the second conductive piece 37-7 to conduct electricity. As the first short block 37-1 moves, the second conductive piece 37-7, the second short block 37-6 and the spline rod 37-5 move. At this time, the second spring 37-8 is compressed to generate elastic force, so that the second conductive piece 37-7 and the first conductive piece 37-2 keep in close contact and conduct electricity until the first short block 37-1 resets and the first conductive piece 37-2 separates from the second conductive piece 37-7. During this process, it gradually rebounds and resets.

[0073] The other end of the spline rod 37-5 is fixedly connected to a limiting block 37-9. The limiting block 37-9 limits the spline rod 37-5 to prevent it from detaching from the vertical plate 37-4 under the action of the second spring 37-8. The second short block 37-6 and the second conductive plate 37-7 are reset to their initial positions by the action of the second spring 37-8.

[0074] A cover 4 is fixedly connected to the surface of the housing 21-1. The cover 4 shields and protects the corresponding internal structures to prevent injury to the human body during operation. A control panel 5 is fixedly connected to one side of the housing 21-1. The control panel 5 controls the operation of the equipment. This is existing technology. The working principle of this part is also existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here.

[0075] Stabilizers 38 are installed on both the upper plate 33 and the lower plate 31, including a connecting cylinder 38-1 fixedly connected to the upper plate 33 and the lower plate 31. A connecting hole 38-2 is opened on the surface of the connecting cylinder 38-1. Through the connecting hole 38-2, the gas entering the connecting cylinder 38-1 can enter the airbag 32, so that the airbag 32 gradually expands and makes tight contact with the upper and lower ends of the coil for fixation. A round tube 38-3 is fixedly connected to the connecting cylinder 38-1. A bolt 38-4 is slidably connected inside the round tube 38-3, and one end of the bolt is fixedly connected to the inner wall of the airbag 32.

[0076] With the arrangement of cylinder 36-11 and bolt 38-4, the expansion of airbag 32 causes bolt 38-4 to move inside the circular tube 38-3. Under the action of gas pressure inside connecting cylinder 38-1 on bolt 38-4, the effect of bolt 38-4 on airbag 32 can be strengthened, and the fixing effect of airbag 32 on coil can be improved.

[0077] The second flexible tube 35-5 and the third flexible tube 35-7 are fitted with a support plate 39 at one end near the round cover 35-6, and one end of the support plate 39 is fixedly connected to the connecting plate 22. The second flexible tube 35-5 and the third flexible tube 35-7 are slidably connected to the support plate 39 respectively. The support plate 39 supports the second flexible tube 35-5 and the third flexible tube 35-7 to prevent them from sagging and contacting the upper plate 33, which would affect the bonding force test of the self-adhesive enameled wire.

[0078] Example 5

[0079] Reference Figures 1 to 13 This is the fifth embodiment of the present invention, which is based on the previous four embodiments.

[0080] Specifically, it also includes the following testing methods:

[0081] A straightening sample is wound onto a polished round bar to form a spiral coil. Then, a load is applied to compress it, and it is bonded under heat. After bonding, the coil sample is removed from the round bar and placed on the lower air bladder 32 and then on the lower plate 31.

[0082] The operation of the lifting assembly 21 is first moved downwards, which moves the connecting plate 22, force gauge 23, upper plate 33 and upper airbag 32 downwards. The upper airbag 32 is inserted into the upper end of the coil. After insertion, the trigger 37 is energized to turn on the air pump 35-2. At the same time, the opening and closing part 35-1 is opened, and the gas is delivered to the two airbags 32 through the first hose 35-3 and the second hose 35-5 for inflation and expansion, and the two ends of the coil are fixed.

[0083] Then, the lifting assembly 21 is controlled to move upward. After inflation is completed, the trigger 37 is de-energized, the air pump 35-2 is turned off and stops running, and the opening and closing part 35-1 is closed. During the upward movement, the force gauge 23 performs a tensile test on the bonding force of the self-adhesive enameled wire. After the test is completed, the reset lever 21-9 activates the exhaust assembly 36, and the airbag 32 discharges the excess gas inside, so that its surface is aligned with the inner surface of the coil, thereby releasing the coil from its fixation and making it easy to remove.

[0084] In summary, the fixing mechanism 3, in cooperation with the driving mechanism 2, can protect and fix the coil, preventing the local stress concentration and increased deformation risk that can easily occur with the traditional contact method between the clamp and the coil. The fixing is completed automatically before the test and automatically unlocked after the test. Compared with the existing technology, the coil testing and replacement steps are reduced and the testing efficiency is improved. It not only eliminates the need for manual clamping, but also avoids the problem of inconsistent clamping force that is difficult to ensure with manual operation.

[0085] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A fixture for testing the adhesion strength of self-adhesive enameled wire, comprising a base plate (1), characterized in that: include, The drive mechanism (2) is fixedly connected to the top of the base plate (1), including a lifting assembly (21) fixedly connected to the top of the base plate (1), a connecting plate (22) is mounted on the lifting assembly (21), and a force gauge (23) is mounted on the bottom of the connecting plate (22); and, The fixing mechanism (3) is installed on the drive mechanism (2) and the base plate (1), including a lower plate (31) fixedly connected to the top of the base plate (1), an upper plate (33) fixedly connected to the lower end of the force gauge (23), an airbag (32) is installed on both the upper plate (33) and the lower plate (31), a connecting hole (34) is opened on the top of the upper plate (33), an inflation assembly (35) is installed on the lifting assembly (21), the lower plate (31) and the upper plate (33), an exhaust assembly (36) is installed on the lifting assembly (21), and the exhaust assembly (36) is set on the inflation assembly (35); The lifting assembly (21) includes a housing (21-1) fixedly connected to the top of the base plate (1). A motor (21-2) is fixedly connected to the top of the housing (21-1). A lead screw (21-3) is fixedly connected to the output shaft of the motor (21-2). The lower end of the lead screw (21-3) is rotatably connected to the inner wall of the housing (21-1). A moving block (21-4) is threadedly connected to the surface of the lead screw (21-3). A guide plate (21-5) is fixedly connected to one end of the moving block (21-4). A guide hole (21-6) is provided on the guide plate (21-5). A cylinder (21-7) is fixedly connected to one end of the movable block (21-4). A movable frame (21-8) is fitted onto the surface of the cylinder (21-7). A lever (21-9) is fixedly connected to one end of the cylinder (21-7). A T-shaped block (21-10) is fixedly connected to one side of the movable frame (21-8). A T-shaped groove (21-11) that mates with the T-shaped block (21-10) is opened on one side of the housing (21-1). The T-shaped block (21-10) is slidably connected in the T-shaped groove (21-11). The connecting plate (22) is fixedly connected to the surface of the movable frame (21-8). The inflation assembly (35) includes an opening and closing component (35-1) fixedly connected to the housing (21-1). An air pump (35-2) is fixedly connected to the housing (21-1), and its output end is connected to the opening and closing component (35-1). A first hose (35-3) is connected to the opening and closing component (35-1). A safety valve (35-4) is connected to one end of the first hose (35-3). A second hose (35-5) is connected to one end of the safety valve (35-4). A circular cover (35-6) is fixedly connected to the top of the upper plate (33) and sleeved on the lower end of the force gauge (23). The second hose (35-5) is connected to the lower plate (31) and the circular cover (35-6) respectively. A third hose (35-7) is connected between the exhaust assembly (36) and the circular cover (35-6). The exhaust assembly (36) includes an opening / closing member (36-1) fixedly connected to the housing (21-1). An unlocking member (36-2) is fixedly connected to the housing (21-1) and cooperates with the opening / closing member (36-1). The opening / closing member (36-1) includes a cylinder (36-11) fixedly connected to the housing (21-1). One end of the third flexible hose (35-7) communicates with the cylinder (36-11). An exhaust port (36-12) is provided on the cylinder (36-11). A piston (36-13) is slidably connected inside the cylinder (36-11). A circular hole (36-14) is opened on the piston (36-13). A square rod (36-15) is slidably connected on the cylinder (36-11), and one end of the rod is fixedly connected to the surface of the piston (36-13). A circular block (36-16) is fixedly connected to the other end of the rod. A first spring (36-17) is sleeved on the surface of the square rod (36-15), and its two ends are fixedly connected to the surface of the circular block (36-16) and the surface of the cylinder (36-11) respectively.

2. The self-adhesive enameled wire adhesion strength testing fixture as described in claim 1, characterized in that: The opening and closing component (35-1) includes a valve body (35-11) fixedly connected to the housing (21-1), a valve core (35-12) slidably connected to the inner wall of the valve body (35-11), a valve stem (35-13) slidably connected to the valve body (35-11), and one end of the stem is fixedly connected to the valve core (35-12). The other end of the valve stem (35-13) is fixedly connected to a short column (35-14), which is slidably connected to the guide hole (21-6). The output end of the air pump (35-2) is connected to the valve body (35-11), and one end of the first hose (35-3) is connected to the valve body (35-11).

3. The self-adhesive enameled wire adhesion strength testing fixture as described in claim 2, characterized in that: The unlocking component (36-2) includes a fixing rod (36-21) fixedly connected to the housing (21-1). A drive plate (36-22) is rotatably connected to the surface of the fixing rod (36-21). A connecting rod (36-23) is fixedly connected to the surface of the drive plate (36-22). A pressing plate (36-24) is fixedly connected to one end of the connecting rod (36-23), and it cooperates with the round block (36-16). A torsion spring (36-25) is sleeved on one end of the fixing rod (36-21), and its two ends are fixedly connected to the surfaces of the drive plate (36-22) and the fixing rod (36-21), respectively.

4. The self-adhesive enameled wire adhesion strength testing fixture as described in claim 1, characterized in that: A trigger element (37) is mounted on the surface of the housing (21-1) and the short post (35-14), including a first short block (37-1) fixedly connected to one end of the short post (35-14), a first conductive sheet (37-2) fixedly connected to the first short block (37-1), a long rod (37-3) fixedly connected to the housing (21-1), a vertical plate (37-4) fixedly connected to one end of the long rod (37-3), and a sliding connection on the vertical plate (37-4). A spline rod (37-5) is connected to a second short block (37-6) at one end of the spline rod (37-5). A second conductive sheet (37-7) is fixedly connected to the second short block (37-6). A second spring (37-8) is sleeved on the surface of the spline rod (37-5), and its two ends are fixedly connected to the vertical plate (37-4) and the second short block (37-6) respectively. A limit block (37-9) is fixedly connected to the other end of the spline rod (37-5).

5. The self-adhesive enameled wire adhesion strength testing fixture as described in claim 1, characterized in that: A cover (4) is fixedly connected to the surface of the housing (21-1), and a control panel (5) is fixedly connected to one side of the housing (21-1).

6. A test method for a self-adhesive enameled wire adhesion strength testing fixture, characterized in that: The self-adhesive enameled wire adhesion test fixture as described in any one of claims 1-5 also includes the following test method: A straightening sample is wound onto a polished round bar to form a spiral coil. Then, a load is applied to compress it, and it is bonded under heat. After bonding, the coil sample is removed from the round bar and placed on the lower air bag (32) and then on the lower plate (31). The operation of the control lifting assembly (21) is first moved down, and the connecting plate (22), force gauge (23), upper plate (33) and upper airbag (32) are moved down. The upper airbag (32) is inserted into the upper end of the coil. After the insertion is completed, the trigger (37) is energized to turn on the air pump (35-2). At the same time, the opening and closing part (35-1) is opened, and the gas is delivered to the two airbags (32) through the first hose (35-3) and the second hose (35-5) for inflation and expansion, and the two ends of the coil are fixed. Then, the lifting assembly (21) is controlled to move upward. After inflation is completed, the trigger (37) is de-energized, the air pump (35-2) is turned off and stopped, and the opening and closing assembly (35-1) is closed. During the upward movement, the force gauge (23) performs a tensile test on the self-adhesive enameled wire bonding force. After the test is completed, the reset lever (21-9) activates the exhaust assembly (36), and the airbag (32) discharges the excess gas inside, causing its surface to separate from the inner surface of the coil, thereby releasing the coil from fixation and making it easy to remove.

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