Detection Device for Breaking Tensile Strength of Ultra-High Strength Steel Cord for Vehicle Tires

Abstract

The present invention relates to the technical field of steel cord detection, and particularly to a device for detecting the breaking tensile force of extremely high-strength steel cords for vehicle tires. It includes: a frame, on which a hydraulic push rod is installed, and the telescopic end of the hydraulic push rod is fixedly connected to an upper fixing plate; a fixed seat, fixedly connected to the frame, and a lower fixing plate is fixedly connected to the fixed seat, and the lower fixing plate is located below the upper fixing plate; there are two wire winding columns symmetrically distributed, which are respectively fixedly connected to the upper fixing plate and the lower fixing plate, and a plurality of wire pressing blocks are slidably connected to the wire winding columns, and all the wire pressing blocks are located in the same vertical plane. The present invention restricts the steel cord between the two wire winding columns to a vertical line through the wire pressing blocks, thereby avoiding the situation that the steel cord slides horizontally along the wire winding columns during the test, making the test process more rigorous, and thus obtaining more accurate and persuasive data in the breaking tensile test of the steel cord.

Description

Technical Field

[0001] The present invention relates to the technical field of steel cord detection, in particular to a breaking tension detection device for extremely high-strength steel cords used in passenger car tires. Background Art

[0002] The steel cord breaking tensile test is an important test to detect the actual performance of steel cord. This test provides important parameters for using the steel cord in tire production by accurately measuring the actual breaking force of the steel cord.

[0003] A tensile testing device is required when conducting a breaking tensile test of a steel cord. There are usually two types of clamps for clamping the steel cord in a tensile testing device. One clamp directly clamps the steel cord on a fixed clamp, and the other clamp winds the steel cord on a roller clamp, and then squeezes and clamps the wound steel cord through an extrusion piece. Of the above two ways of clamping the steel cord, the method of directly clamping the steel cord with a clamp is only suitable for steel cords with larger diameters, fewer wires, and weaker structures. When clamping steel cords with complex structures, more and thinner wires, the steel cord is prone to slipping in the clamp, resulting in inaccurate test data. When using a roller clamp, the steel cord is usually wound freely on the roller clamp, and the upper and lower ends of the steel cord are usually not on the same vertical line, affecting the accuracy of the data. In addition, the winding path of the steel cord is chaotic, causing the steel cord to easily slide horizontally on the roller clamp when subjected to force, which also affects the accuracy of the test. Summary of the Invention

[0004] In order to overcome the disadvantage of existing tension detection devices that the clamps are difficult to accurately clamp the steel cord when performing a breaking tensile test on the steel cord, thereby affecting the test accuracy, the present invention provides an extremely high-strength steel cord breaking tensile test device for passenger car tires.

[0005] The technical implementation scheme of the present invention is: a device for detecting the breaking force of an extremely high-strength steel cord for a passenger car tire, comprising:

[0006] A frame, wherein a hydraulic push rod is mounted on the frame, and an upper fixed plate is fixedly connected to the telescopic end of the hydraulic push rod;

[0007] A fixing base is fixedly connected to the frame, a lower fixing plate is fixedly connected to the fixing base, and the lower fixing plate is located below the upper fixing plate;

[0008] The winding posts are symmetrically distributed and fixed to the upper fixed plate and the lower fixed plate respectively. A plurality of wire pressing blocks are slidably connected to the winding posts, and all the wire pressing blocks are located in the same vertical plane.

[0009] The winding mechanism is arranged on the upper fixed plate and is used for automatically winding the steel cord regularly around the two winding poles and controlling the adjacent wire pressing blocks to clamp the steel cord.

[0010] Furthermore, the wire pressing block is provided with an arcuate surface, and the winding post is provided with a plurality of arcuate grooves. The arcuate grooves on the winding post correspond one-to-one to the wire pressing block on the winding post, and the arcuate surface of the wire pressing block and the adjacent arcuate grooves jointly clamp the steel cord.

[0011] Furthermore, the radian of the arc-shaped surface on the wire pressing block is less than π / 2.

[0012] Furthermore, the winding mechanism includes:

[0013] There are two rotating rings, which are rotatably connected to the upper fixed plate and the lower fixed plate respectively. The rotating rings are coaxial with the adjacent winding poles. The upper fixed plate and the lower fixed plate are both equipped with motors. The output shafts of the motors are driven by the adjacent rotating rings through a gear set.

[0014] There are two first fixed slide rails, each fixed to an adjacent rotating ring. The first fixed slide rails are slidably connected to a first sliding block, and a first elastic member is installed between the first sliding block and a quick clamp is installed on the first sliding block close to the upper fixed plate.

[0015] There are two driving components, which are respectively arranged in adjacent winding posts and are used to push the wire pressing blocks on adjacent winding posts to move;

[0016] a wire clamping component, provided on the first sliding block close to the lower fixed plate, for winding the steel cord around the winding post of the lower fixed plate;

[0017] The line-adjusting component is arranged on the fixing seat and is used for assisting in measuring and taking out the steel cord of a fixed length.

[0018] Furthermore, the driving component includes:

[0019] A sliding member is slidably connected to the adjacent winding post, and a second elastic member is installed between the two. The first sliding block is fixedly connected to an extrusion post, and the extrusion post is used to squeeze the adjacent sliding member to move;

[0020] There are a plurality of sliding frames, which correspond one to one with the wire pressing blocks on the adjacent winding posts and are all fixed to the sliding member. The sliding frames are slidably connected to the adjacent wire pressing blocks;

[0021] The auxiliary extrusion component is arranged on the adjacent winding pole and is used for assisting in extruding the adjacent sliding member to move.

[0022] Furthermore, the auxiliary extrusion component includes:

[0023] A raised block, which is slidably connected to the adjacent wire winding column;

[0024] A spring telescopic rod, which is fixedly connected to the adjacent raised block. The spring telescopic rod is slidably connected to the adjacent wire winding column, and a first extrusion block is fixedly connected to the telescopic end of the spring telescopic rod;

[0025] A second extrusion block, which is fixedly connected to the adjacent slider. The first extrusion block is used to extrude the adjacent second extrusion block to move.

[0026] Furthermore, the first extrusion block is provided with symmetrically distributed inclined surfaces. Both inclined surfaces on the first extrusion block are used to extrude the adjacent second extrusion block. The inclination degree of the inclined surface on the first extrusion block close to the adjacent wire pressing block in the vertical direction is less than that of the other inclined surface in the vertical direction. The elastic coefficient of the spring telescopic rod is greater than the elastic coefficient of the slider.

[0027] Furthermore, an electric swing block is installed on the wire winding column. The electric swing block is used to further fix the steel cord wound on the wire winding column.

[0028] Furthermore, the wire clamping component includes:

[0029] A fixed hook, which is fixedly connected to the first slider close to the lower fixing plate;

[0030] An extrusion claw, which is slidably connected to the fixed hook, and a third elastic member is installed between the two. The extrusion claw and the fixed hook are used to automatically clamp the steel cord;

[0031] An electromagnet, which is fixedly connected to the fixed seat. The electromagnet is used to fix the extrusion claw when powered on.

[0032] Furthermore, the wire guiding component includes:

[0033] A second fixed slide rail, which is fixedly connected to the fixed seat;

[0034] A second slider, which is slidably connected to the second fixed slide rail;

[0035] An electric claw, which is fixedly connected to the second fixed slide rail.

[0036] The present invention has the following advantages: By means of the wire pressing block, the steel cord between the two wire winding columns is restricted within a vertical line, thereby avoiding the situation that the steel cord slides horizontally along the wire winding column during the test, making the test process more rigorous, and thus enabling the steel cord breaking tensile test to obtain more accurate and persuasive data.

[0037] The present invention automatically winds and clamps both ends of the steel cord through the cooperation of the first fixed slide rail and the adjacent first sliding block, and automatically winds the steel cord around the adjacent winding column, avoiding the influence of the wound steel cord on the steel cord in the test section, and further ensuring the accuracy of the test.

[0038] The present invention cooperates with the spring telescopic rod and the first extrusion block to jointly extrude the second extrusion block and the sliding member to move. At the same time, the steel cord is wound around the outside of the convex block, so that the spring telescopic rod provides the force for the pressing block to clamp the steel cord. While effectively clamping steel cords of different diameters, it avoids hard extrusion of the steel cord, resulting in plastic deformation of the steel cord, and ensures the rigor of the test. Brief Description of the Drawings

[0039] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0040] Figure 2 is a three-dimensional structural schematic diagram of the frame, hydraulic push rod and upper fixing plate of the present invention;

[0041] Figure 3 is a three-dimensional structural schematic diagram of the hydraulic push rod, upper fixing plate and fixed seat of the present invention;

[0042] Figure 4 is the present invention Figure 3 The enlarged view at A in;

[0043] Figure 5 is the present invention Figure 3 The enlarged view at B in;

[0044] Figure 6 is a cross-sectional view of the upper fixing plate, winding column and sliding member of the present invention;

[0045] Figure 7 is a three-dimensional structural schematic diagram of the lower fixing plate, winding column and pressing block of the present invention;

[0046] Figure 8 is a three-dimensional structural schematic diagram of the extrusion column and quick gripper of the present invention;

[0047] Figure 9 is a three-dimensional structural schematic diagram of the fixed seat, lower fixing plate and second fixed slide rail of the present invention;

[0048] Figure 10 is a cross-sectional view of the lower fixing plate, winding column and sliding member of the present invention;

[0049] Figure 11 is a three-dimensional structural schematic diagram of the fixed seat, second fixed slide rail and second sliding block of the present invention;

[0050] Figure 12Schematic three-dimensional structure diagram of the first fixed slide rail, the first sliding block and the fixed hook of the present invention;

[0051] Figure 13 Schematic three-dimensional structure diagram of the fixed hook and the extrusion claw of the present invention.

[0052] Meanings of the reference numerals in the figure: 1: Frame, 2: Hydraulic push rod, 3: Upper fixing plate, 4: Fixed seat, 5: Lower fixing plate, 6: Wire winding column, 7: Wire pressing block, 71: Arc-shaped groove, 8: Rotating ring, 9: Electric motor, 10: First fixed slide rail, 11: First sliding block, 111: Extrusion column, 12: Quick clamping claw, 13: Sliding part, 14: Sliding frame, 15: Protruding block, 16: Spring telescopic rod, 17: First extrusion block, 18: Second extrusion block, 19: Electric swing block, 20: Fixed hook, 21: Extrusion claw, 22: Electromagnet, 23: Second fixed slide rail, 24: Second sliding block, 25: Electric clamping claw. Detailed implementation manners

[0053] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0054] A device for detecting the breaking tensile force of extremely high-strength steel cord for vehicle tires, as Figures 1-7 shown, includes a frame 1, a hydraulic push rod 2 is installed on the frame 1, and the telescopic end of the hydraulic push rod 2 is fixedly connected to an upper fixing plate 3; a fixed seat 4, fixedly connected to the frame 1, a lower fixing plate 5 is fixedly connected to the fixed seat 4, and the lower fixing plate 5 is located below the upper fixing plate 3; wire winding columns 6, having two symmetrically distributed ones, are respectively fixedly connected to the upper fixing plate 3 and the lower fixing plate 5, and a plurality of wire pressing blocks 7 are slidably connected to the wire winding columns 6, and all the wire pressing blocks 7 are located in the same vertical plane; a wire winding mechanism, arranged on the upper fixing plate 3, is used for automatically winding the steel cord regularly around the two wire winding columns 6 and controlling the adjacent wire pressing blocks 7 to clamp the steel cord.

[0055] Furthermore, as Figures 4-7 shown, the wire pressing block 7 is provided with an arc-shaped surface, the wire winding column 6 is provided with a plurality of arc-shaped grooves 71, the arc-shaped grooves 71 on the wire winding column 6 correspond to the wire pressing blocks 7 on the wire winding column 6 one by one, and the arc-shaped surface of the wire pressing block 7 and the adjacent arc-shaped grooves 71 jointly clamp the steel cord.

[0056] Furthermore, as Figures 4-7 shown, the radian of the arc-shaped surface on the wire pressing block 7 is less than π / 2.

[0057] In the above solution, it aims to solve the problem that when the existing tensile testing device conducts a breaking tensile test on steel cord, it is difficult for the fixture to accurately clamp the steel cord, resulting in the influence on the test accuracy. A control terminal is arranged on the frame 1, and the wire winding mechanism is electrically connected to the control terminal; by restricting all the pressing blocks 7 within the same vertical plane, the range of the horizontal movement of the steel cord on the wire winding column 6 is restricted, ensuring that the steel cord will not move in the front-back direction during the stretching process. The two wire winding columns 6 can be symmetrically distributed up and down, or symmetrically distributed centrally. When the two wire winding columns 6 are symmetrically distributed centrally, the position of the upper fixing plate 3 can be adjusted left and right relative to the telescopic end of the hydraulic push rod 2 (the staff adjusts the position of the upper fixing plate 3 according to the diameter of the steel cord before the experiment), ensuring that the steel cord is always in a completely vertical state during the stretching process (as Figure 2 shown, the steel cord between the right side of the upper wire winding column 6 and the left side of the lower wire winding column 6 is in a vertical state). In this solution, the two wire winding columns 6 are symmetrically distributed centrally, and two pressing blocks 7 are arranged on one wire winding column 6; the size and radian of the arc-shaped groove 71 are exactly the same as those of the arc-shaped surface of the adjacent pressing block 7. By making the radian of the arc-shaped surface on the pressing block 7 less than π / 2, while ensuring that the pressing block 7 cooperates with the arc-shaped groove 71 to effectively clamp the steel cord, it is avoided that the steel cord is overly bent and deformed, thereby affecting the test result of the steel cord. At least one pressing block 7 is arranged at the right side of the upper part of the upper wire winding column 6, and at least one pressing block 7 is arranged at the left side of the lower part of the lower wire winding column 6 to further reduce the possibility of the steel cord sliding back and forth along the wire winding column 6 after being stressed.

[0058] The working process is as follows: When the staff conducts a test on the steel cord, first, the staff adjusts the position of the upper fixing plate 3 according to the diameter of the steel cord. After the adjustment is completed, the staff installs the upper end of the steel cord on the wire winding mechanism. Subsequently, the staff pulls the steel cord to make the steel cord wind clockwise around the upper wire winding column 6 for one circle (viewed from the front to the back), so that the steel cord passes through the gaps between the two pressing blocks 7 on the upper wire winding column 6 and the adjacent arc-shaped grooves 71 in sequence. The staff pulls the steel cord out from the right side of the upper wire winding column 6 downward, gradually pulls the steel cord to the left side of the lower wire winding column 6, and controls the steel cord to wind counterclockwise around the lower wire winding column 6 for one circle (viewed from the front to the back), and it is also necessary to ensure that the steel cord passes through the gaps between the two pressing blocks 7 on the lower wire winding column 6 and the adjacent arc-shaped grooves 71 in sequence. Finally, the staff installs the lower end of the steel cord on the wire winding mechanism, and then completes the step of installing the steel cord.

[0059] After the staff installs the steel cord on this device, the staff controls the winding mechanism through the control terminal to continuously wind the upper end of the steel cord on the upper winding post 6. The winding mechanism causes the wire pressing block 7 on the upper winding post 6 to slide into the adjacent winding post 6. The wire pressing block 7 cooperates with the adjacent arc groove 71 to clamp the steel cord. The control terminal then controls the telescopic end of the hydraulic push rod 2 to drive the upper fixed plate 3 and the upper winding post 6 to move upward together. The lower end of the steel cord slides on the lower winding post 6 and the winding mechanism until the length of the steel cord between the two winding posts 6 reaches a certain value (this value is determined by the breaking tensile test The standard is used to conveniently compare the tensile strength of different steel cords, for example: the value is set to 100mm or 200mm). The staff controls the hydraulic push rod 2 to stop working. At this time, the lower end of the steel cord stops moving. The staff controls the winding mechanism through the control terminal to wind the lower end of the steel cord around the lower winding post 6. The winding mechanism controls the wire pressing block 7 on the lower winding post 6 to slide into the adjacent winding post 6, so that the wire pressing block 7 cooperates with the adjacent arc-shaped groove 71 to clamp the steel cord. At this time, the steel cord is limited by the wire pressing blocks 7 on the upper and lower sides and is in a completely vertical state, ensuring the accuracy of the test data.

[0060] After both ends of the steel cord are clamped, the staff controls the telescopic end of the hydraulic push rod 2 to continue to move upward. The control terminal records the magnitude of the tension applied by the telescopic end of the hydraulic push rod 2 and the distance the telescopic end of the hydraulic push rod 2 moves upward through the existing tension sensor until the steel cord is broken under the action of the tension. The staff turns off the hydraulic push rod 2 and records the data on the control terminal. Finally, the staff controls the winding mechanism to work in reverse through the control terminal, and removes the upper and lower ends of the steel cord from the two winding poles 6 respectively, and continues to test other steel cords.

[0061] Furthermore, if Figures 4-10 As shown, the winding mechanism includes: a rotating ring 8, which has two parts and is rotatably connected to the upper fixed plate 3 and the lower fixed plate 5 respectively. The rotating ring 8 is coaxial with the adjacent winding post 6. The upper fixed plate 3 and the lower fixed plate 5 are both equipped with a motor 9. The output shaft of the motor 9 is transmitted to the adjacent rotating ring 8 through a gear set; a first fixed slide rail 10, which has two parts and is respectively fixed to the adjacent rotating ring 8. The first fixed slide rail 10 is slidably connected to the first sliding block 11, and a first elastic member is installed between the two. A quick clamp 12 is installed on the first sliding block 11 close to the upper fixed plate 3; a driving component, which has two parts and is respectively arranged in the adjacent winding post 6, for pushing the wire pressing block 7 on the adjacent winding post 6 to move; a wire clamping component, which is arranged on the first sliding block 11 close to the lower fixed plate 5, for winding the steel cord around the winding post 6 of the lower fixed plate 5; a wire-aligning component, which is arranged on the fixed seat 4, for assisting in measuring and taking out the steel cord of a fixed length.

[0062] In the above solution, the motor 9, the wire clamping component and the wire guiding component are all electrically connected to the control terminal. The quick gripper 12 and the wire clamping component are respectively used to clamp both ends of the steel cord. The quick gripper 12 and the wire clamping component are respectively located at the rear side of the adjacent winding column 6. By making the winding column 6 coaxial with the rotating ring 8, when the rotating ring 8 drives the first fixed slide rail 10 and the first sliding block 11 to rotate, it is convenient for the first sliding block 11 to drive the quick gripper 12 or the wire clamping component thereon to rotate, rotate the steel cord along the adjacent winding column 6, and then wind the steel cord around the winding column 6. The quick gripper 12 is an existing powerless device, and the staff manually operates the quick gripper 12 to clamp the upper end of the steel cord. The wire clamping component is used to clamp the lower end of the steel cord. The first elastic member on the first sliding block 11 is a tension spring.

[0063] The working process is as follows: During the process of installing the steel cord as described above, when the staff clamps the upper end of the steel cord through the winding mechanism, the staff manually operates the quick gripper 12 to clamp the upper end of the steel cord on the quick gripper 12. When the staff clamps the lower end of the steel cord through the winding mechanism, the staff first controls the steel cord to pass through the wire clamping component, and then fixes the steel cord on the wire guiding component.

[0064] After the staff installs the steel cord and needs to wind and fix it on the upper winding column 6, the staff controls the upper motor 9 to work through the control terminal. The upper motor 9 drives the rotating ring 8 to rotate through the gear set. The rotating ring 8 drives the first fixed slide rail 10, the first sliding block and the quick gripper 12 to rotate. The quick gripper 12 drives the upper end of the steel cord to rotate, and the upper end of the steel cord gradually winds around the rear side of the upper winding column 6. The first sliding block 11 is gradually dragged by the steel cord and moves towards the adjacent rotating ring 8. The first elastic member on the first sliding block 11 stretches and stores energy. When the first sliding block 11 moves to a position close to the rotating ring 8, the first sliding block 11 controls the upper driving component to work. The upper driving component controls the adjacent wire pressing block 7 to retract upwards into the upper winding column 6. The wire pressing block 7 on the upper winding column 6 clamps the steel cord. Subsequently, the upper first sliding block 11 moves to the end of the stroke, and the control terminal turns off the upper motor 9, and the steel cord is fixed on the upper winding column 6.

[0065] When the staff controls the telescopic end of the hydraulic push rod 2 to drive the upper fixing plate 3 to move upward and is about to pull out a certain length of steel cord, during the process of the steel cord moving upward following the upper fixing plate 3, since the steel cord is not fixed by the wire clamping component, the steel cord slides upward along the wire clamping component and the lower winding post 6. The steel cord simultaneously pulls the wire guiding component to move upward together. During this process, the tensile force received by the steel cord will not cause it to deform. When the staff pulls out the steel cord to the specified length and needs to wind the steel cord around the lower winding post 6, the staff controls the wire clamping component to clamp the steel cord inside it through the control terminal, and controls the wire guiding component to release the fixation of the lower end of the steel cord. Subsequently, the staff controls the lower motor 9 to work through the control terminal. The lower motor 9 drives the lower rotating ring 8, the first fixed sliding rail 10, the first sliding block 11 and the wire clamping component to rotate through the same principle as above until the steel cord is wound and fixed at the rear of the lower winding post 6. The lower first sliding block 11 drives the lower driving component to work, so that the pressing block 7 on the lower winding post 6 clamps the lower end of the steel cord to fix the lower end of the steel cord.

[0066] After the breaking tensile test is completed, the staff controls the wire clamping component and the two motors 9 to work through the control terminal. The two motors 9 drive the two rotating rings 8 to rotate in the reverse direction respectively to release the winding of the steel cord on the adjacent winding posts 6. The first sliding block 11 moves back to its original position under the pulling force of the adjacent first elastic member.

[0067] Furthermore, as Figures 4-7 shown, the driving component includes: a sliding member 13, which is slidably connected inside the adjacent winding post 6, and a second elastic member is installed between the two. The first sliding block 11 is fixedly connected with an extrusion column 111, and the extrusion column 111 is used to extrude the adjacent sliding member 13 to move; there are several sliding frames 14, which correspond to the pressing blocks 7 on the adjacent winding posts 6 one by one and are fixedly connected to the sliding member 13. The sliding frames 14 are slidably connected with the adjacent pressing blocks 7; an auxiliary extrusion component is arranged on the adjacent winding post 6 and is used to assist in extruding the adjacent sliding member 13 to move.

[0068] Furthermore, as Figures 4-7 shown, the auxiliary extrusion component includes: a convex block 15, which is slidably connected to the adjacent winding post 6; a spring telescopic rod 16, which is fixedly connected to the adjacent convex block 15. The spring telescopic rod 16 is slidably connected to the adjacent winding post 6, and the telescopic end of the spring telescopic rod 16 is fixedly connected with a first extrusion block 17; a second extrusion block 18, which is fixedly connected to the adjacent sliding member 13, and the first extrusion block 17 is used to extrude the adjacent second extrusion block 18 to move.

[0069] Furthermore, as Figure 7As shown, the first extrusion block 17 is provided with symmetrically distributed inclined surfaces. Both inclined surfaces on the first extrusion block 17 are used to extrude the adjacent second extrusion blocks 18. The inclination degree of the inclined surface on the first extrusion block 17 close to the adjacent wire pressing block 7 in the vertical direction is less than that of the other inclined surface in the vertical direction. The elastic coefficient of the spring telescopic rod 16 is greater than that of the sliding member 13.

[0070] Furthermore, as Figures 2-5 shown, an electric swing block 19 is installed on the wire winding column 6, and the electric swing block 19 is used to further fix the steel cord wound on the wire winding column 6.

[0071] In the above solution, the electric swing block 19 is electrically connected to the control terminal. An inclined groove is provided on the sliding frame 14. The inclined groove on the sliding frame 14 is inclined gradually from back to front in a direction away from the axis of the adjacent wire winding column 6. When the extrusion column 111 extrudes the sliding member 13, the sliding member 13 moves forward under the extrusion of the extrusion column 111. At this time, during the forward movement of the sliding frame 14 following the sliding member 13, it drives the adjacent wire pressing block 7 to move towards the side close to the wire winding column 6. The initial positions of the wire pressing block 7 and the sliding member 13 are as Figure 4 and Figure 5 shown; the second elastic member on the sliding member 13 is a spring. The two inclined surfaces on the first extrusion block 17 are located on its front and rear sides respectively. The second extrusion block 18 passes through the first extrusion block 17 by extruding the inclined surface on the rear side of the first extrusion block 17. The inclined surface on the front side of the first extrusion block 17 is used to extrude the adjacent second extrusion block 18 to move forward. The inclination degree of the inclined surface on the front side of the first extrusion block 17 in the vertical direction is less than that of the inclined surface on its rear side in the vertical direction. When the second extrusion block 18 is located on the front side of the first extrusion block 17, the inclined surface on the front side of the first extrusion block 17 extrudes the second extrusion block 18 to move forward. The first extrusion block 17 provides a forward extrusion force to the sliding member 13, so that the sliding member 13 drives the sliding frame 14 and the wire pressing block 7 to clamp the steel cord, ensuring that the wire pressing block 7 can effectively clamp the steel cord with any diameter. The electric swing block 19 is a clamp controlled by an electric rotating shaft. The electric rotating shaft drives the clamp to rotate towards the adjacent wire winding column 6, thereby clamping the steel cord wound outside the wire winding column 6; the elastic force of the spring telescopic rod 16 is greater than the elastic force of the second elastic member on the sliding member 13.

[0072] The working process is as follows: When the staff controls the motor 9 to work through the control terminal, and the motor 9 drives the adjacent rotating ring 8 to rotate through the gear set. Taking the upper winding post 6 and adjacent components as an example, when the first sliding block 11 approaches the rotating ring 8, the extrusion post 111 on the first sliding block 11 gradually contacts the sliding part 13. Subsequently, during the movement of the extrusion post 111, it squeezes the sliding part 13 to move forward, and the second elastic part on the sliding part 13 is compressed and stores energy. During the movement of the sliding part 13, it drives the adjacent wire pressing block 7 to move together through the sliding frame 14 on it. The wire pressing block 7 moves towards the axis of the winding post 6, and the wire pressing block 7 cooperates with the arc-shaped groove 71 to gradually clamp the steel cord. During the movement of the sliding part 13, it drives the second extrusion block 18 to squeeze the first extrusion block 17, and the first extrusion block 17 squeezes the protruding block 15 upwards through the spring telescopic rod 16. At this time, the rotating ring 8 drives the first fixed slide rail 10 and the first sliding block 11 to rotate, so that the steel cord gradually winds around the rear part of the adjacent winding post 6 (i.e., the outside of the protruding block 15). The protruding block 15 is limited by the steel cord and cannot move upwards. At this time, the spring telescopic rod 16 is compressed and stores energy. When the second extrusion block 18 moves to the rear side of the first extrusion block 17, the first extrusion block 17 is reset downwards under the elastic force of the spring telescopic rod 16. The first extrusion block 17 squeezes the adjacent sliding part 13 to move forward through the inclined surface on its front side. The sliding part 13 is separated from the contact with the extrusion post 111. The sliding part 13 completely clamps the steel cord through the sliding frame 14 and the adjacent wire pressing block 7. At this time, the spring telescopic rod 16 is not fully extended, and the elastic force on the spring telescopic rod 16 is not fully released. The sliding part 13 stops moving forward. After the first sliding block 11 winds the steel cord tightly, the first sliding block 11 and the extrusion post 111 stop rotating together. The control terminal turns off the motor 9 and controls the electric swing block 19 to work. The electric swing block 19 squeezes and fixes the steel cord on the adjacent winding post 6.

[0073] When the test is over and the staff needs to loosen the steel cord, the staff first turns on the electric swing block 19 through the control terminal to release the fixation of the steel cord by the electric swing block 19. Then the staff controls the motor 9 to drive the rotating ring 8 to reverse through the control terminal, gradually releasing the state of the steel cord winding around the winding post 6. At this time, the steel cord releases the limitation on the protruding block 15, and the protruding block 15 pops up upwards under the elastic force of the spring telescopic rod 16. At this time, the elastic force of the spring telescopic rod 16 is completely released. Therefore, the sliding part 13 moves backward and resets under the elastic force of the second elastic part on it. During the reset process of the sliding part 13, the sliding part 13 squeezes the first extrusion block 17, the spring telescopic rod 16 and the protruding block 15 to move upwards through the second extrusion block 18, so that the second extrusion block 18 moves to the rear side of the first extrusion block 17 again. When the sliding part 13 resets, it drives the adjacent wire pressing block 7 to move and reset through the sliding frame 14.

[0074] Furthermore, as Figure 9 and Figures 11-13As shown, the wire clamping component includes: a fixed hook 20, fixedly connected to the first sliding block 11 near the lower fixed plate 5; a squeezing claw 21, slidably connected to the fixed hook 20, and a third elastic member is installed between the two, and the squeezing claw 21 and the fixed hook 20 are used to automatically clamp the steel cord; an electromagnet 22, fixedly connected to the fixing seat 4, and the electromagnet 22 is used to fix the squeezing claw 21 when power is turned on.

[0075] Furthermore, if Figure 9 and Figure 11 As shown, the linear components include: a second fixed slide rail 23 fixed to the fixed base 4; a second sliding block 24 slidably connected to the second fixed slide rail 23; and an electric clamp 25 fixed to the second fixed slide rail 23.

[0076] In the above solution, the opening direction of the fixing hook 20 is located on the side away from the electric clamping claw 25, so that when the steel cord slides on the fixing hook 20, the steel cord will not be out of contact with the fixing hook 20. The third elastic member on the fixing hook 20 is a spring. The initial state of the third elastic member on the fixing hook 20 is as follows: Figure 11 and Figure 12 As shown, it is in a compressed and stored state, and the elastic force of the third elastic member on the fixed hook 20 is less than the magnetic attraction between the electromagnet 22 and the extrusion claw 21. The electric clamp 25 is an existing device. The electromagnet 22 and the electric clamp 25 are both electrically connected to the control terminal. The initial position of the second sliding block 24 is located on the lower side of the second fixed slide rail 23.

[0077] The workflow is as follows: When the staff winds the steel cord around the rear side of the lower winding post 6 during the initial installation of the steel cord, the electromagnetic iron 22 is first started through the control terminal. The staff passes the steel cord through the fixed hook 20, and then clamps the steel cord on the electric gripper 25. The staff controls the electric gripper 25 to clamp the end of the steel cord through the control terminal, completing the fixation of the lower end of the steel cord. Subsequently, the staff drags the steel cord upward until the length of the steel cord reaches the length required for the experiment. During the upward movement of the steel cord, the steel cord is not clamped by the fixed hook 20 and the pressing claw 21 and slides upward relative to the fixed hook 20. The steel cord simultaneously drags the electric gripper 25 and the second sliding block 24 to slide upward along the second fixed slide rail 23. The electric gripper 25 and the second sliding block 24 ensure that the steel cord always remains in a straight state by their own weights. When the staff measures the length of the steel cord and is ready to fix the lower end of the steel cord, the staff first turns off the electromagnetic iron 22 through the control terminal. The magnetic force of the electromagnetic iron 22 disappears, and the pressing claw 21 moves leftward under the elastic force of its third elastic member and cooperates with the fixed hook 20 to clamp the steel cord inside. Subsequently, the staff controls the electric gripper 25 to open through the control terminal. The electric gripper 25 and the second sliding block 24 reset downward under the action of gravity. The staff starts the lower motor 9 through the control terminal. The lower motor 9 drives the lower first sliding block 11, the fixed hook 20, and the pressing claw 21 to rotate through the above principle, so that the steel cord is wound and fixed on the rear part of the lower winding post 6. Through the cooperation of the fixed hook 20 and the electric gripper 25, the steel cord is automatically dragged to the required length, thereby maintaining the accuracy of the experiment and reducing the operation burden of the staff.

[0078] When the staff needs to loosen the steel cord, the motor 9 is first controlled through the control terminal to drive the first sliding block 11, the fixed hook 20, and the pressing claw 21 to reverse, so that the steel cord is no longer wound around the rear part of the lower winding post 6. The lower first sliding block 11 resets under the elastic force of its first elastic member. Subsequently, the control terminal controls the lower motor 9 to work through the control terminal. The lower motor 9 drives the lower first fixed slide rail 10 to rotate and reset to the upper side of the electromagnetic iron 22. The control terminal magnetizes the electromagnetic iron 22. The electromagnetic iron 22 attracts the pressing claw 21 to move rightward again through the magnetic force. The pressing claw 21 moves and resets and compresses its third elastic member again. At this time, the staff removes the steel cord from the fixed hook 20.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. Detection device for breaking tensile force of extremely high-strength steel cord for vehicle tires Its characteristics include: A frame, wherein a hydraulic push rod is mounted on the frame, and an upper fixed plate is fixedly connected to the telescopic end of the hydraulic push rod; A fixing base is fixedly connected to the frame, a lower fixing plate is fixedly connected to the fixing base, and the lower fixing plate is located below the upper fixing plate; The winding posts are symmetrically distributed and fixed to the upper fixed plate and the lower fixed plate respectively. A plurality of wire pressing blocks are slidably connected to the winding posts, and all the wire pressing blocks are located in the same vertical plane. A winding mechanism, provided on the upper fixed plate, for automatically and regularly winding the steel cord around the two winding posts and controlling the adjacent wire pressing blocks to clamp the steel cord; The winding mechanism includes: There are two rotating rings, which are rotatably connected to the upper fixed plate and the lower fixed plate respectively. The rotating rings are coaxial with the adjacent winding poles. The upper fixed plate and the lower fixed plate are both equipped with motors. The output shafts of the motors are driven by the adjacent rotating rings through a gear set. There are two first fixed slide rails, each fixed to an adjacent rotating ring. The first fixed slide rails are slidably connected to a first sliding block, and a first elastic member is installed between the first sliding block and a quick clamp is installed on the first sliding block close to the upper fixed plate. There are two driving components, which are respectively arranged in adjacent winding posts and are used to push the wire pressing blocks on adjacent winding posts to move; The motor drives the rotating ring to rotate through a gear set, and the rotating ring drives the first fixed slide rail, the first sliding block and the quick clamp to rotate, and the quick clamp drives the upper end of the steel cord to rotate, and the upper end of the steel cord is gradually wound around the rear side of the upper winding post, and the first sliding block is dragged by the steel cord and gradually moves toward the adjacent rotating ring, and the first elastic member on the first sliding block is stretched and stores force. When the first sliding block moves close to the rotating ring, the first sliding block controls the upper driving component to work, and the upper driving component controls the adjacent wire pressing block to retract into the upper winding post, and the wire pressing block on the upper winding post clamps the steel cord.

2. The breaking tensile force detecting device for the extremely high strength steel cord of a vehicle tire according to claim 1, characterized in that, The wire pressing block is provided with an arcuate surface, and the winding post is provided with a plurality of arcuate grooves. The arcuate grooves on the winding post correspond one to one with the wire pressing block on the winding post, and the arcuate surface of the wire pressing block and the adjacent arcuate grooves clamp the steel cord together.

3. The breaking tensile force detecting device for ultra-high strength steel cord for vehicle tires according to claim 2, characterized in that, The radian of the arc-shaped surface on the wire pressing block is less than π / 2.

4. The breaking tensile force detecting device for the ultra-high strength steel cord of a vehicle tire according to claim 3, characterized in that, The winding mechanism also includes: a wire clamping component, provided on the first sliding block close to the lower fixed plate, for winding the steel cord around the winding post of the lower fixed plate; The line-adjusting component is arranged on the fixing seat and is used for assisting in measuring and taking out the steel cord of a fixed length.

5. The breaking tensile force detection device for extremely high-strength steel cord for vehicle tires according to claim 4, characterized in that, The driving component includes: A sliding member is slidably connected to the adjacent winding post, and a second elastic member is installed between the two. The first sliding block is fixedly connected to an extrusion post, and the extrusion post is used to squeeze the adjacent sliding member to move; There are a plurality of sliding frames, which correspond one to one with the wire pressing blocks on the adjacent winding posts and are all fixed to the sliding member. The sliding frames are slidably connected to the adjacent wire pressing blocks; An auxiliary extrusion component is arranged on the adjacent wire winding posts and is used to assist in extruding the adjacent sliding parts to move.

6. The breaking tensile force detection device for ultra-high strength steel cord of vehicle tires according to claim 5, characterized in that, The auxiliary extrusion component includes: A convex block, which is slidably connected to the adjacent wire winding post; A spring telescopic rod, which is fixedly connected to the adjacent convex block. The spring telescopic rod is slidably connected to the adjacent wire winding post, and a first extrusion block is fixedly connected to the telescopic end of the spring telescopic rod; A second extrusion block, which is fixedly connected to the adjacent sliding part. The first extrusion block is used to extrude the adjacent second extrusion block to move.

7. The breaking tensile force detection device for extremely high-strength steel cord for vehicle tires according to claim 6, characterized in that, The first extrusion block is provided with symmetrically distributed inclined surfaces. Both inclined surfaces on the first extrusion block are used to extrude the adjacent second extrusion block. The inclination degree of the inclined surface of the first extrusion block close to the adjacent wire pressing block in the vertical direction is less than that of the other inclined surface in the vertical direction. The elastic coefficient of the spring telescopic rod is greater than that of the sliding part.

8. The breaking tensile force detection device for extremely high-strength steel cord of vehicle tires according to claim 7, characterized in that, An electric swing block is installed on the wire winding post. The electric swing block is used to further fix the steel cord wound on the wire winding post.

9. The breaking tensile force detection device for ultra-high strength steel cord of vehicle tires according to claim 8, characterized in that, The wire clamping component includes: A fixed hook, which is fixedly connected to the first sliding block close to the lower fixed plate; A pressing claw, which is slidably connected to the fixed hook, and a third elastic member is installed between the two. The pressing claw and the fixed hook are used to automatically clamp the steel cord; An electromagnet, which is fixedly connected to the fixed seat. The electromagnet is used to fix the pressing claw when powered on.

10. The breaking tensile force detecting device for the ultra-high strength steel cord of a vehicle tire according to claim 9, characterized in that, The wire guiding component includes: A second fixed slide rail, which is fixedly connected to the fixed seat; A second sliding block, which is slidably connected to the second fixed slide rail; An electric claw, which is fixedly connected to the second fixed slide rail.

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