A steel cord outgoing quality detection device

Abstract

This invention relates to the technical field of testing equipment, and in particular to a factory quality testing device for steel wire cords. The device includes two relatively distributed conveying units for conveying the cord. Each conveying unit includes a side plate, a rotating body rotatably mounted on the side plate, and a pressure roller that cooperates with the rotating body. By using two rotating bodies to drive the annular cord in a periodic rotational motion, a portion of the cord on the outer wall of the rotating body can be kept in an arc-shaped state. As the cord rotates, this arc shape can periodically and continuously move forward on the cord, thus simulating the state of the cord during normal use and enabling the detection of bending fatigue. Simultaneously, because one rotating body actively drives the cord's movement while the other provides damping for the cord's movement, a portion of the cord between the two rotating bodies is always taut, facilitating continuous tensile strength testing at any position on the cord.

Description

Technical Field

[0001] This invention relates to the technical field of testing equipment, and in particular to a device for testing the quality of steel wire cord before it leaves the factory. Background Technology

[0002] In the tire manufacturing industry, steel cord, as a key skeleton material, directly determines the safety and service life of a tire through its dynamic durability performance. Traditional factory quality inspection methods are usually limited to unidirectional static tensile strength testing of steel cord. However, in actual tire operating conditions, the tread portion in contact with the ground is deformed under pressure, causing the steel cord in that area to be in a straight line, while the cord in the rest of the tire maintains the designed arc shape. As the tire rolls, the interface between the straight and arc segments, i.e., the bending angle of the cord, will periodically and continuously migrate on the annular cord structure. This process causes the cord to be subjected to dynamic alternating stress with periodic changes in amplitude and direction, and its failure mode is mainly manifested as bending fatigue. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a steel wire cord factory quality inspection device, the specific technical solution of which is as follows:

[0004] The present invention provides a steel wire cord factory quality inspection device, comprising two conveying units that are relatively distributed and used for conveying the cord. Each conveying unit includes a side plate, a rotating body rotatably mounted on the side plate, and a pressure roller that cooperates with the rotating body. The pressure roller is used to limit the position of the cord on the rotating body.

[0005] One of the side plates is provided with a drive motor for driving the rotation of the corresponding rotating body, and the other side plate is provided with a damping unit for providing damping for the rotation of the corresponding rotating body.

[0006] Furthermore, the rotating body is conical in shape, and the pressure roller is capable of moving along the generatrix of the rotating body.

[0007] Furthermore, the number of pressure rollers in the conveying unit is set to two, and the distance between each pressure roller and the outer wall of the rotating body is constant;

[0008] A linear guide rail is provided on each of the pressure rollers on the side plate. The vertical distance between any position on the linear guide rail and the outer wall of the rotating body is equal. A slider is slidably arranged on the linear guide rail and connected to the pressure roller.

[0009] Furthermore, the conveying unit also includes two connecting rods located between the two sliders, with one end of the two connecting rods rotatably connected to each other, and the other end of the two connecting rods rotatably connected to the two sliders respectively.

[0010] Furthermore, the pressure roller is slidably mounted on the slider one via a slide block, and the slide block and the slider one are connected by a spring sheet. The axis of the pressure roller is parallel to the generatrix on the outer wall of the rotating body corresponding to the pressure roller, and the movement direction of the pressure roller on the slider one is perpendicular to the outer wall of the rotating body.

[0011] Furthermore, the side plate is provided with an arc-shaped guide rail coaxial with the rotating body, one of the linear guide rails is fixed on the side plate, and the other linear guide rail is slidably disposed on the arc-shaped guide rail by a slider two;

[0012] The rotating body is rotatably mounted on the side plate via a support shaft. A rotating sleeve is provided on the outer wall of the support shaft. Both the support shaft and the rotating sleeve pass through the side plate. The rotating sleeve and the second slider are connected by a connecting rod. A driven wheel is provided on the rotating sleeve. The driven wheel is driven to rotate by a driving wheel, which in turn drives the rotating sleeve, the connecting rod, and the second slider to move.

[0013] Furthermore, the damping unit includes a rotating cylinder rotatably mounted on the side plate. The rotating cylinder is connected to the corresponding support shaft via a transmission belt. Ribs and a reciprocating screw are respectively provided on the inner wall and in the middle of the rotating cylinder, and the end of the reciprocating screw extends beyond the rotating cylinder. The reciprocating screw is fixed to the side plate relative to the fixing plate via a fixing plate. A second threaded sleeve that cooperates with the reciprocating screw is provided inside the rotating cylinder. A piston is provided on the second threaded sleeve, and the rib passes through the piston and slides relative to it.

[0014] A flow-limiting orifice is formed on the piston, and the flow-limiting orifice is used to connect the spaces on both sides of the piston.

[0015] Furthermore, an adjusting rod is provided inside the rotating cylinder, passing through the piston, and the adjusting rod is slidably connected to the piston;

[0016] A baffle plate is provided on the piston for blocking the flow-limiting orifice, and the adjusting rod controls the relative position of the baffle plate and the adjusting rod.

[0017] The beneficial effects of this invention are as follows:

[0018] By employing two rotating bodies to drive the annular cord in a periodic rotational motion, a portion of the cord on the outer wall of the rotating bodies can be kept in an arc shape. As the cord rotates, this arc shape can periodically and continuously move forward on the cord, thus simulating the state of the cord during normal use and enabling the detection of cord bending fatigue. At the same time, since one rotating body actively drives the cord's movement while the other rotating body provides damping for the cord's movement, the portion of the cord between the two rotating bodies is always in a taut state, facilitating continuous tensile strength testing at any position on the cord. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 yes Figure 1 A structural diagram from another perspective;

[0022] Figure 3 This is a schematic diagram of the conveying unit structure in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the pressure roller and its structure in an embodiment of the present invention;

[0024] Figure 5 yes Figure 4 A structural diagram from another perspective;

[0025] Figure 6 This is a schematic diagram of the rotating body and its structure in an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the damping unit in an embodiment of the present invention.

[0027] Figure label:

[0028] 1. Cord; 2. Conveying unit; 3. Side plate; 4. Rotating body; 5. Pressure roller; 6. Drive motor; 7. Damping unit; 8. Linear guide rail; 9. Slider 1; 10. Connecting rod 1; 11. Slide seat; 12. Spring; 13. Threaded rod; 14. Screw sleeve 1; 15. Connecting rod 2; 16. Arc guide rail; 17. Slider 2; 18. Connecting rod 3; 19. Support shaft; 20. Rotating sleeve; 21. Driven wheel; 22. Driving wheel; 23. Rotary drum; 24. Transmission belt; 25. Rib; 26. Reciprocating screw; 27. Fixed plate; 28. Screw sleeve 2; 29. ​​Piston; 30. Flow limiting hole; 31. Adjusting rod; 32. Blind plate; 33. Support roller. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. This embodiment is written in a progressive manner.

[0032] like Figures 1 to 7 As shown, a steel wire cord factory quality inspection device of the present invention includes two conveying units 2 that are relatively distributed and used to convey the cord 1. The conveying unit 2 includes a side plate 3, a rotating body 4 rotatably mounted on the side plate 3, and a pressure roller 5 that cooperates with the rotating body 4. The pressure roller 5 is used to limit the position of the cord 1 on the rotating body 4.

[0033] One side plate 3 is equipped with a drive motor 6 for driving the corresponding rotating body 4 to rotate, and the other side plate 3 is equipped with a damping unit 7 for providing damping for the rotation of the corresponding rotating body 4.

[0034] In this invention, two conveying units 2 are distributed left and right. One conveying unit 2 is used to actively pull the cord 1, and the other conveying unit 2 is used to provide an obstacle to the conveying of the cord 1. This makes the cord 1 conveyed from the conveying unit 2 that provides the obstacle to the actively pulling conveying unit 2 in a taut state, so as to realize the tautness and tension test of the cord 1. The side plate 3 can be used to provide support for the rotating body 4, pressure roller 5, drive motor 6 and damping unit 7 on it. The pressure roller 5 can restrict the cord 1 on the outer wall of the rotating body 4, so that part of the cord 1 on the rotating body 4 bends and deforms along the trajectory of the outer wall of the rotating body 4.

[0035] In use, a section of cord 1 is cut from the production process in the workshop and its ends are connected to form a loop. The cord 1 is then placed on two rotating bodies 4, and the cord 1 is restricted by the pressure roller 5. The drive motor 6 drives one of the rotating bodies 4 to rotate, and the rotating body 4 pulls and conveys the cord 1. Along the conveying direction of the cord 1, the cord 1 pulls the other rotating body 4 to rotate. The damping unit 7 on the rotating body 4 can provide damping for the movement of the rotating body 4 and the part of the cord 1 on it, so that the cord 1 between the two rotating bodies 4 is kept taut. Since the shape of the cord 1 is looped, the pressure roller 5 presses the cord 1 onto the rotating body 4, so that the cord 1 also forms an arc on the outer wall of the rotating body 4. This simulates the bending deformation of the cord 1 in actual use. With the continuous rotation of the cord 1, the periodic change of the bending position on the cord 1 can be realized, so that the durability fatigue test of the cord 1 can be achieved.

[0036] It should be noted that when the lower part of the cord 1 of the two rotating bodies 4 is in a taut state, the upper part of the cord 1 of the two rotating bodies 4 is in a slack state. When the lower part of the cord 1 of the two rotating bodies 4 is in a slack state, the upper part of the cord 1 of the two rotating bodies 4 is in a taut state. The slack cord 1 can be supported by the support roller 33.

[0037] By using two rotating bodies 4 to drive the annular cord 1 to rotate periodically, a portion of the cord 1 on the outer wall of the rotating body 4 can be kept in an arc shape. As the cord 1 rotates, this arc shape can move forward periodically and continuously on the cord 1, thus simulating the state of the cord 1 during normal use and enabling the detection of bending fatigue of the cord 1. At the same time, since one rotating body 4 actively drives the cord 1 to move, and the other rotating body 4 provides damping for the movement of the cord 1, the portion of the cord 1 between the two rotating bodies 4 is always in a taut state, which facilitates continuous tensile strength testing at any position on the cord 1.

[0038] Furthermore, the rotating body 4 is conical in shape, and the pressure roller 5 can move along the generatrix of the rotating body 4.

[0039] Since the rotating body 4 is conical, any position on its outer wall can provide the cord 1 with arc deformation conditions of different diameters. The pressure roller 5 can conveniently limit the cord 1 to the position of a circle of any diameter on the rotating body 4.

[0040] Furthermore, there are two pressure rollers 5, and the distance between each pressure roller 5 and the outer wall of the rotating body 4 is constant;

[0041] Linear guide rails 8 are provided on each pressure roller 5 on the side plate 3. The vertical distance between any position on the linear guide rail 8 and the outer wall of the rotating body 4 is equal. A slider 9 is slidably provided on the linear guide rail 8 and is connected to the pressure roller 5.

[0042] The linear guide rail 8 and the slider 9 can provide support and guidance for the pressure roller 5, so that the pressure roller 5 can be used to limit the cord 1 to different diameter positions on the rotating body 4; the arrangement of two pressure rollers 5 can make one pressure roller 5 the input end of the cord 1 and the other pressure roller 5 the output end of the cord 1, so that the part of the cord 1 between the two pressure rollers 5 can be deformed and perfectly fit the outer wall of the rotating body 4.

[0043] It should be noted that since the cord 1 can be at any position along the axis of the rotating body 4, the support roller 33 needs to be able to move along the axis of the rotating body 4 in order to facilitate the lifting of the cord 1 at any position.

[0044] Furthermore, the conveying unit 2 also includes two connecting rods 10 located between the two sliders 9, with one end of the two connecting rods 10 rotatably connected to each other, and the other end of the two connecting rods 10 rotatably connected to the two sliders 9 respectively.

[0045] To ensure that the two pressure rollers 5 can simultaneously correspond to a circle on the outer wall of the rotating body 4, the two sliders 9 can be connected by two connecting rods 10. That is, when one slider 9 slides on the linear guide rail 8, the slider 9 can drive the other slider 9 to slide on the corresponding linear guide rail 8 through the two connecting rods 10. Since both linear guide rails 8 are inclined and correspond to the outer wall of the rotating body 4, the distance between the two sliders 9 will change, and the two connecting rods 10 will rotate relative to each other.

[0046] To provide power to slider 9, a threaded rod 13 is rotatably mounted on the side plate 3. A threaded sleeve 14 is screwed onto the threaded rod 13. The threaded sleeve 14 is rotatably connected to slider 9 via a connecting rod 2 15. Thus, when the threaded rod 13 rotates, it pushes the threaded sleeve 14 to move. The threaded sleeve 14 pulls the corresponding slider 9 to slide on the linear guide rail 8 via the connecting rod 2 15.

[0047] Furthermore, the pressure roller 5 is slidably mounted on the slider 9 via the slide block 11, and the slide block 11 and the slider 9 are connected by the spring piece 12. The axis of the pressure roller 5 is parallel to the generatrix on the outer wall of the rotating body 4 corresponding to the pressure roller 5, and the direction of movement of the pressure roller 5 on the slider 9 is perpendicular to the outer wall of the rotating body 4.

[0048] By utilizing the sliding mechanism of the pressure roller 5 on the slider 9, the pressure roller 5 can be pushed by the spring 12 to always be in contact with the outer wall of the rotating body 4. This ensures that there is always a strong squeezing force between the pressure roller 5 and the rotating body 4, making it convenient to squeeze the cord 1 onto the rotating body 4 using the pressure roller 5. At the same time, the movable characteristic of the pressure roller 5 on the slider 9 through the slide block 11 can also meet the testing requirements for cords 1 of different diameters.

[0049] Furthermore, the side plate 3 is provided with an arc-shaped guide rail 16 coaxial with the rotating body 4, one linear guide rail 8 is fixed on the side plate 3, and the other linear guide rail 8 is slidably set on the arc-shaped guide rail 16 through the slider 2 17;

[0050] The rotating body 4 is rotatably mounted on the side plate 3 via the support shaft 19. A rotating sleeve 20 is provided on the outer wall of the support shaft 19. Both the support shaft 19 and the rotating sleeve 20 pass through the side plate 3. The rotating sleeve 20 is connected to the slider 17 via the connecting rod 18. A driven wheel 21 is provided on the rotating sleeve 20. The driven wheel 21 is driven to rotate via the driving wheel 22.

[0051] One support shaft 19 is connected to the drive motor 6, and the other support shaft 19 is connected to the damping unit 7. Since a linear guide rail 8 can slide on the arc-shaped guide rail 16 through the slider 17, that is, the linear guide rail 8 can perform circular motion around the rotating body 4, the distance between the two linear guide rails 8 is adjustable, the distance between the two pressure rollers 5 is adjustable, and the arc-shaped application length of the cord 1 on the outer wall of the rotating body 4 is adjustable, thereby realizing multi-mode detection of the cord 1.

[0052] The driving wheel 22 drives the driven wheel 21 and the rotating sleeve 20 to rotate, so that the rotating sleeve 20 drives the slider 2 17 to move through the connecting rod 3 18. The rotating sleeve 20 can simultaneously support and guide the support shaft 19, and the movement of the rotating sleeve 20 and the support shaft 19 are independent of each other.

[0053] Furthermore, the damping unit 7 includes a rotating cylinder 23 rotatably mounted on the side plate 3. The rotating cylinder 23 is connected to the corresponding support shaft 19 via a transmission belt 24. Ribs 25 and reciprocating screws 26 are respectively provided on the inner wall and in the middle of the rotating cylinder 23. The end of the reciprocating screw 26 extends beyond the rotating cylinder 23. The reciprocating screw 26 is fixed relative to the side plate 3 via a fixing plate 27. A threaded sleeve 28 that cooperates with the reciprocating screw 26 is provided inside the rotating cylinder 23. A piston 29 is provided on the threaded sleeve 28. The ribs 25 pass through the piston 29 and slide relative to it.

[0054] A flow-limiting orifice 30 is provided on the piston 29 to connect the spaces on both sides of the piston 29.

[0055] The rotating drum 23 contains a viscous fluid. When the rotating body 4 rotates, it drives the rotating drum 23 to rotate via the support shaft 19 and the transmission belt 24. At this time, the reciprocating screw 26 is kept fixed by the fixing plate 27. The rotating drum 23 moves relative to the reciprocating screw 26. The rotating drum 23 drives the screw sleeve 28 and the piston 29 to rotate via the rib 25. Since the screw sleeve 28 and the reciprocating screw 26 work together, the reciprocating screw 26 can drive the screw sleeve 28 to move back and forth along the axis of the reciprocating screw 26, thereby causing the piston 29 to move back and forth. The fluid on both sides of the piston 29 can flow through the flow limiting hole 30. The flow limiting hole 30 restricts the fluid flow rate, thereby providing damping for the movement of the piston 29 and the rotation of the rotating drum 23. The rotating drum 23 transmits this damping to the rotating body 4 and the cord 1, thereby keeping the cord 1 taut.

[0056] Furthermore, an adjusting rod 31 is provided inside the rotating drum 23, passing through the piston 29, and the adjusting rod 31 is slidably connected to the piston 29;

[0057] A baffle 32 is provided on the piston 29 to block the flow restrictor 30, and an adjusting rod 31 controls the relative position of the baffle 32 and the adjusting rod 31.

[0058] Since the piston 29 can move along the axis of the reciprocating screw 26, the baffle 32 moves synchronously with the piston 29. The baffle 32 slides relative to the adjusting rod 31. At the same time, the adjusting rod 31 can drive the baffle 32 to rotate, thereby adjusting the coverage area of ​​the baffle 32 on the flow limiting hole 30, which facilitates the adjustment of the damping force.

[0059] In practical use, grooves that allow the cover plate 32 to slide can be opened on both the piston 29 and the outer wall of the adjusting rod 31 along the axial direction. When the piston 29 moves, the piston 29 drives the cover plate 32 to slide in the groove on the adjusting rod 31. When the adjusting rod 31 rotates, the adjusting rod 31 drives the cover plate 32 to slide in the groove on the piston 29. Of course, in addition to the above-mentioned structural method, other methods can also be adopted. As long as the purpose of this case can be achieved, they are all within the protection scope of this case.

[0060] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A device for inspecting the quality of steel wire cord before it leaves the factory, characterized in that, The device includes two conveying units that are relatively distributed and used to convey cords. Each conveying unit includes a side plate, a rotating body rotatably mounted on the side plate, and a pressure roller that cooperates with the rotating body. The pressure roller is used to limit the position of the cord on the rotating body. The cords are connected end to end to form a loop, and the cords are looped around the two rotating bodies. The pressure rollers restrict the cords to the outer wall of the rotating bodies, causing some of the cords on the rotating bodies to bend and deform along the trajectory of the outer wall of the rotating bodies. One side plate is provided with a drive motor for driving the rotation of the corresponding rotating body, and the other side plate is provided with a damping unit for providing damping for the rotation of the corresponding rotating body. When some of the cords on the lower side of the two rotating bodies are in a taut state, some of the cords on the upper side of the two rotating bodies are in a slack state, and when some of the cords on the lower side of the two rotating bodies are in a slack state, the cords on the upper side of the two rotating bodies are in a taut state.

2. The steel wire cord factory quality inspection device according to claim 1, characterized in that, The rotating body is conical in shape, and the pressure roller can move along the generatrix of the rotating body.

3. The steel wire cord factory quality inspection device according to claim 2, characterized in that, The number of pressure rollers in the conveying unit is set to two, and the distance between each pressure roller and the outer wall of the rotating body is constant; A linear guide rail is provided on each of the pressure rollers on the side plate. The vertical distance between any position on the linear guide rail and the outer wall of the rotating body is equal. A slider is slidably arranged on the linear guide rail and connected to the pressure roller.

4. The steel wire cord factory quality inspection device according to claim 3, characterized in that, The conveying unit also includes two connecting rods located between the two sliders, with one end of each connecting rod rotatably connected to the other, and the other end of each connecting rod rotatably connected to the two sliders respectively.

5. The steel wire cord factory quality inspection device according to claim 4, characterized in that, The pressure roller is slidably mounted on the slider one via a slide block, and the slide block and the slider one are connected by a spring piece. The axis of the pressure roller is parallel to the generatrix on the outer wall of the rotating body corresponding to the pressure roller, and the movement direction of the pressure roller on the slider one is perpendicular to the outer wall of the rotating body.

6. The steel wire cord factory quality inspection device according to claim 3, characterized in that, The side plate is provided with an arc-shaped guide rail coaxial with the rotating body. One of the linear guide rails is fixed on the side plate, and the other linear guide rail is slidably disposed on the arc-shaped guide rail by a slider two. The rotating body is rotatably mounted on the side plate via a support shaft. A rotating sleeve is provided on the outer wall of the support shaft. Both the support shaft and the rotating sleeve pass through the side plate. The rotating sleeve and the second slider are connected by a connecting rod. A driven wheel is provided on the rotating sleeve. The driven wheel is driven to rotate by a driving wheel, which in turn drives the rotating sleeve, the connecting rod, and the second slider to move.

7. The steel wire cord factory quality inspection device according to claim 6, characterized in that, The damping unit includes a rotating cylinder rotatably mounted on the side plate. The rotating cylinder is connected to the corresponding support shaft via a transmission belt. Ribs and a reciprocating screw are respectively provided on the inner wall and in the middle of the rotating cylinder, and the end of the reciprocating screw extends beyond the rotating cylinder. The reciprocating screw is fixed to the side plate by a fixing plate. A screw sleeve II is provided inside the rotating cylinder to cooperate with the reciprocating screw. A piston is provided on the screw sleeve II, and the rib passes through the piston and slides relative to it. A flow-limiting orifice is formed on the piston, and the flow-limiting orifice is used to connect the spaces on both sides of the piston.

8. The steel wire cord factory quality inspection device according to claim 7, characterized in that, An adjusting rod is provided inside the rotating drum, passing through the piston, and the adjusting rod is slidably connected to the piston; A baffle plate is provided on the piston for blocking the flow-limiting orifice, and the adjusting rod controls the relative position of the baffle plate and the adjusting rod.

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