Novel bush reducing device

Abstract

The utility model discloses a novel bush reducing device, which relates to the field of automobile bushings and comprises a reducing device, an oil cylinder, a degumming detection device and a telescopic driving device. The reducing device comprises a reducing clamp, an axial sliding pressure head, a reducing sleeve and a connecting gasket; the oil cylinder comprises a cylinder barrel, an oil cylinder piston, a cylinder bottom and a cylinder opening inner sleeve; the degumming detection device comprises a degumming detector and a degumming detector pressure probe; the telescopic driving device comprises a servo motor, a synchronous belt assembly, a bearing plate, a connecting column and a lead screw sleeve. The oil cylinder piston pushes the reducing sleeve so as to extrude the axis to the sliding pressure head to realize reducing action, and meanwhile, the degumming detection device applies pressure upwards to an inner framework of a bushing product to carry out degumming detection. The novel bush hole shrinkage device integrates bush hole shrinkage and detection degumming functions, and has the advantages of being high in working efficiency and hole shrinkage precision, reasonable and compact in structure and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the field of automobile bushings, in particular to a novel bushing diameter reducing device. Background Art

[0002] Automobile bushing is an important component in the automobile suspension system. It is usually made of materials such as rubber, plastic or metal. The main function of the bushing is to cushion, reduce shock and absorb noise during the driving of the vehicle.

[0003] In the processing of rubber bushings, diameter reduction is an important step. After the rubber bushings are vulcanized and formed, they are subjected to a certain degree of radial compression by using equipment such as an automatic diameter reduction machine, so that compressive stress can be pre-existing between rubber molecules. In this way, when the bushing is subjected to external load during operation, the compressive stress on one side will increase, while the compressive stress on the other side will decrease or return to a free state. Through this mechanism, the rubber bushing can be protected from tensile stress during operation, thereby avoiding early damage to the product and increasing its service life. After the radial compression of the rubber bushing is completed, it needs to be tested for degumming. The traditional method of testing rubber bushings for degumming is mostly manual testing, that is, when applying external force to the rubber of the bushing, it depends on human observation to determine whether there are cracks or degumming. Because the degree of automation of manual testing is too low, it is time-consuming and labor-intensive, and the detection accuracy is low. At present, there are few equipment that take into account the functions of automatic diameter reduction and degumming detection. Utility Model Content

[0004] The utility model aims to provide a novel bushing reduction device to solve the problem of both automatic bushing reduction and debonding detection mentioned in the background technology.

[0005] The utility model adopts the following technical solutions:

[0006] The utility model discloses a novel bushing diameter reducing device, which comprises a diameter reducing device, an oil cylinder, a debonding detection device and a telescopic driving device.

[0007] The oil cylinder comprises a cylinder barrel, the bottom of which is sealed and connected to the cylinder bottom, the head of which is fixedly connected to a sleeve inside a cylinder mouth, and the cylinder barrel is sealed and movably connected to an oil cylinder piston.

[0008] The reducing device is arranged in the cylinder barrel, and the reducing device includes a reducing clamp, which is fixedly connected to the bottom surface of the sleeve in the cylinder mouth, and a plurality of axially sliding pressure heads distributed in a circular ring shape are slidably connected to the reducing clamp, and a product placement area with a hollow cylindrical surface is formed on the inner side of the axially sliding pressure head, and the product placement area is used to place the automobile bushing, and a reducing sleeve that is inserted and connected is arranged on the outer side of the axially sliding pressure head, and the outer inclined surface of the axially sliding pressure head can be slidably sleeved with the inner inclined surface of the reducing sleeve, and the bottom end of the reducing sleeve is fixedly connected to the connecting gasket, and the connecting gasket is fixed to the upper end of the cylinder piston.

[0009] The degumming detection device is located in the reserved center hole of the oil cylinder piston. The degumming detection device includes a degumming detector pressure probe. The degumming detector pressure probe is arranged at the top of the degumming detector. The degumming detector is connected to the telescopic driving device.

[0010] Furthermore, the reducing fixture is provided with a plurality of annularly distributed slide grooves around the axis of the reducing fixture, and the slide grooves are slidably engaged with the axis-directed sliding pressure head.

[0011] Furthermore, a hanging block is provided at the top of the axially sliding pressure head, and the hanging block is slidably engaged in the sliding groove; a circular hole is provided on the axially sliding pressure head, and a plurality of the circular holes of the axially sliding pressure heads are connected in series in a ring shape through an annular spring; the overall appearance of the axially sliding pressure head array is a frustum shape with a large upper diameter and a small lower diameter, and the axially sliding pressure head array can be elastically slid along the axial direction on the reducing clamp to gather or spread.

[0012] Furthermore, the inner side surface of the reducing sleeve is an extrusion surface, and the reducing sleeve as a whole is a sleeve shape with a cylindrical outer side surface and a conical inner side surface with a large upper diameter and a small lower diameter. The extrusion surface is fitted into the outer side surface of the axial sliding pressure head array.

[0013] Furthermore, the telescopic drive device includes a servo motor, which is fixedly connected to a support plate. The servo motor is power-connected to the degumming detector via a synchronous belt assembly, and the support plate is fixedly connected to the cylinder bottom via a connecting column.

[0014] Furthermore, the degumming detector comprises an upper shaft, the degumming detector pressure probe is arranged at the top end of the upper shaft, a displacement sensor is arranged at the bottom end of the upper shaft, the displacement sensor is slidably connected and cooperated with the upper shaft, a spring is arranged in the cavity at the connection between the displacement sensor and the upper shaft, one end of the spring abuts against the upper shaft, and the other end abuts against the displacement sensor;

[0015] The lower end of the displacement sensor is connected to a force sensor, which is arranged on a base, which is arranged on the top of the lower rod body, and the base is provided with a protrusion that is slidably connected and cooperates with the guide groove, and the guide groove is arranged on the inner wall of the reserved center hole of the cylinder piston.

[0016] Furthermore, the synchronous belt assembly includes a first pulley, a second pulley and a synchronous belt; the first pulley is fixedly connected to the screw sleeve, the screw sleeve is rotatably connected to the support plate, and the screw sleeve is threadedly connected to the lower rod body; the second pulley is power-connected to the first pulley through the synchronous belt, and the second pulley is arranged on the output end of the servo motor.

[0017] Compared with the prior art, the beneficial technical effects of the utility model are:

[0018] The novel bushing reduction device combines the functions of bushing reduction and debonding detection, and has the advantages of high working efficiency, high reduction accuracy, reasonable and compact structure, and convenient maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 This is a front view of a new bushing reducing device of the utility model;

[0021] Figure 2 This is a front view of a new bushing reducing device of the utility model;

[0022] Figure 3 It is a cross-sectional view of the diameter reducing device of the utility model;

[0023] Figure 4 This is a cross-sectional view of the oil cylinder of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the diameter reducing fixture and the diameter reducing sleeve of the utility model;

[0025] Figure 6 It is a schematic diagram of the connection effect of the diameter reducing clamp, the diameter reducing sleeve and the connection gasket of the utility model;

[0026] Figure 7 It is a structural schematic diagram of the reducing sleeve of the utility model;

[0027] Figure 8 It is a schematic diagram of the connection effect of the diameter reduction clamp and the axial sliding pressure head in the diameter reduction state of the utility model;

[0028] Fig. 9 It is a schematic structural diagram of an axially sliding pressure head array in a reduced diameter state of the utility model;

[0029] Fig.10 This is a schematic diagram of the structure of a single axially sliding pressure head of the utility model;

[0030] Fig.11 This is a schematic diagram of the annular spring structure of the utility model;

[0031] Fig.12 It is a structural schematic diagram of the debonding detection device and the telescopic driving device of the utility model;

[0032] Fig.13 It is a schematic diagram of the structure of the degumming detector and the synchronous belt assembly of the utility model;

[0033] Fig.14 It is a structural schematic diagram of the connection between the upper shaft and the displacement sensor of the utility model.

[0034] Description of the reference numerals: 1. Reducing device; 1-1. Reducing fixture; 1-2. Axial sliding pressure head; 1-2-1. Reserved hole; 1-2-2. Annular spring; 1-3. Product placement area; 1-4. Reducing sleeve; 1-4-1. Extrusion surface; 1-5. Connecting gasket; 1-6. Hanging block; 1-7. Slide groove; 2. Oil cylinder; 2-1. Cylinder barrel; 2-2. Oil cylinder piston; 2-3. Cylinder bottom; 2-4. Cylinder mouth inner sleeve; 3. Degumming detection device; 3-1. Degumming detector; 3- 1-1, base; 3-1-2, guide groove; 3-1-3, spring; 3-1-4, displacement sensor; 3-1-5, force sensor; 3-1-6, upper rod body; 3-1-7, lower rod body; 3-2, debonding detector pressure probe; 4, telescopic drive device; 4-1, servo motor; 4-2, synchronous belt assembly; 4-2-1, first pulley; 4-2-2, second pulley; 4-2-3, synchronous belt; 4-3, connecting column; 4-4, supporting plate; 4-5, screw sleeve. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] like Figure 1 and Figure 2 As shown, this embodiment discloses a novel bushing reducing device, which includes a reducing device 1, a cylinder 2, a debonding detection device 3 and a telescopic driving device 4.

[0037] like Figure 3 and Figure 4 As shown, the oil cylinder 2 includes a cylinder barrel 2-1, the bottom of the cylinder barrel 2-1 is sealed and connected to the cylinder bottom 2-3, the head of the cylinder barrel 2-1 is fixedly connected to the cylinder mouth inner sleeve 2-4, and the cylinder barrel 2-1 is sealed and movably connected to the oil cylinder piston 2-2.

[0038] like Figure 3 As shown, the reducing device 1 is arranged in the cylinder 2-1, and the reducing device 1 includes a reducing clamp 1-1, which is fixedly connected to the bottom surface of the sleeve 2-4 in the cylinder mouth, and a plurality of axially sliding pressure heads 1-2 distributed in a circular ring shape are slidably connected to the reducing clamp 1-1, and a product placing area 1-3 with a hollow cylindrical surface is formed on the inner side of the axially sliding pressure head 1-2, and a reducing sleeve 1-4 is provided on the outer side of the axially sliding pressure head 1-2, and the outer inclined surface of the axially sliding pressure head 1-2 and the inner inclined surface of the reducing sleeve 1-4 can be slidably sleeved and matched, and the bottom end of the reducing sleeve 1-4 is fixedly connected to the connecting gasket 1-5, and the connecting gasket 1-5 is fixed to the upper end of the cylinder piston 2-2.

[0039] like Figures 3 to 7 As shown, the inner side surface of the reducing sleeve 1-4 is the extrusion surface 1-4-1. The reducing sleeve 1-4 as a whole is in the shape of a sleeve with a cylindrical outer side surface and a conical inner side surface with a large upper diameter and a small lower diameter. The extrusion surface 1-4-1 is fitted into the outer side surface of the axial sliding pressure head 1-2 array.

[0040] like Figure 5 and Figure 8 As shown, in this embodiment, a plurality of slide grooves 1-7 distributed in a circular shape are arranged on the reducing clamp 1-1 around the axis of the reducing clamp 1-1, and the grooves of the slide grooves 1-7 are radially arranged toward the center of the circle of the reducing clamp 1-1, and the slide grooves 1-7 are slidably engaged with the axial sliding pressure head 1-2.

[0041] like Figures 8 to 11 As shown, a hanging block 1-6 is provided at the top of the axially sliding pressure head 1-2, and the hanging block 1-6 is slidably engaged in the sliding groove 1-7; a circular hole 1-2-1 is provided on the axially sliding pressure head 1-2, and the circular holes 1-2-1 of several axially sliding pressure heads 1-2 are connected in series in a ring shape through an annular spring 1-2-2; the overall appearance of the axially sliding pressure head 1-2 array is a frustum shape with a large upper diameter and a small lower diameter; the annular spring 1-2-2 allows the axially sliding pressure head 1-2 array to elastically slide along the axial direction on the reducing fixture 1-1, gather or spread.

[0042] When the cylinder piston 2-2 moves upward, it drives the connecting gasket 1-5 to move upward and pushes the reducing sleeve 1-4 upward. The reducing sleeve 1-4 slides upward and squeezes in. The extrusion surface 1-4-1 forces the axis to move toward the sliding pressure head 1-2 and gather toward the axis, thereby realizing the reduction function of the bushing.

[0043] like Fig.12As shown, the telescopic drive device 4 includes a servo motor 4-1, which is fixedly connected to a support plate 4-4, and the servo motor 4-1 is connected to the degumming detector 3-1 through a synchronous belt assembly 4-2. The support plate 4-4 is fixedly connected to the cylinder bottom 2-3 through a connecting column 4-3.

[0044] like Figure 3 to Figure 4 and Figure 12 to Figure 14 As shown, the degumming detection device 3 is located in the reserved center hole of the cylinder piston 2-2. The degumming detection device 3 includes a degumming detector pressure probe 3-2. The degumming detector pressure probe 3-2 is arranged on the top of the degumming detector 3-1. The degumming detector 3-1 is connected to the telescopic driving device 4, and the telescopic driving device 4 is connected to an external computer.

[0045] like Fig.13 and Fig.14 As shown, the degumming detector 3-1 includes an upper shaft 3-1-6, a degumming detector pressure probe 3-2 is arranged at the top end of the upper shaft 3-1-6, a displacement sensor 3-1-4 is arranged at the bottom end of the upper shaft 3-1-6, the displacement sensor 3-1-4 is slidably connected to the upper shaft 3-1-6, a spring 3-1-3 is arranged in the cavity at the connection between the displacement sensor 3-1-4 and the upper shaft 3-1-6, one end of the spring 3-1-3 abuts against the upper shaft 3-1-6, and the other end abuts against the displacement sensor 3-1-4.

[0046] The lower end of the displacement sensor 3-1-4 is connected to a force sensor 3-1-5, which is arranged on a base 3-1-1, which is arranged on the top of a lower rod 3-1-7, and a protrusion which is slidably connected with a guide groove 3-1-2 is arranged on the base 3-1-1, and the guide groove 3-1-2 is arranged on the inner wall of a reserved center hole of the oil cylinder piston 2-2;

[0047] When performing debonding detection, the lower shaft 3-1-7, the base 3-1-1, the force sensor 3-1-5 and the displacement sensor 3-1-4 move upward to squeeze the spring 3-1-3 and then push the upper shaft 3-1-6, pushing the debonding detector pressure probe 3-2 to apply pressure to the bushing. The displacement sensor 3-1-4 and the force sensor 3-1-5 collect the deformation and force data of the spring 3-1-3, and transmit the collected data to an external computer for debonding detection analysis and judgment.

[0048] like Figure 4 , Fig.12 and Fig.13 As shown, the synchronous belt assembly 4-2 includes a first pulley 4-2-1, a second pulley 4-2-2 and a synchronous belt 4-2-3. The first pulley 4-2-1 is fixedly connected to a screw sleeve 4-5, the screw sleeve 4-5 is rotatably connected to the support plate 4-4, and the screw sleeve 4-5 is threadedly connected to the lower rod body 3-1-7.

[0049] The second pulley 4-2-2 is connected to the first pulley 4-2-1 through a synchronous belt 4-2-3, and the second pulley 4-2-2 is arranged on the output end of the servo motor 4-1.

[0050] When the servo motor 4-1 is started, the first pulley 4-2-1 and the screw sleeve 4-5 are driven to rotate through the synchronous belt 4-2-3. Since the screw sleeve 4-5 is threadedly connected to the lower rod body 3-1-7, and the base 3-1-1 of the lower rod body 3-1-7 is slidably connected with the guide groove 3-1-2 in the cylinder piston 2-2, the lower rod body 3-1-7 can only move up and down, thereby realizing the action of pushing up or lowering the degumming detector 3-1.

[0051] The working principle of the utility model is as follows:

[0052] like Figures 1 to 14 As shown, first, place the bushing product on the degumming detector pressure probe 3-2, start the servo motor 4-1 to drive the degumming detector 3-1 to move up and down through the synchronous belt assembly 4-2, and when the degumming detector pressure probe 3-2 moves to the desired position, the displacement sensor inside the degumming detector pressure probe 3-2 transmits the displacement information to the external computer, and the computer controls the telescopic drive device 4 to complete the displacement action. Then put the bushing into the product placement area 1-3. Start the cylinder 2, and when the cylinder piston 2-2 moves upward, it will push the reducing sleeve 1-4 upward, and the reducing sleeve 1-4 will slide upward and squeeze in, forcing the inner axis to move toward the axis of the sliding pressure head 1-2, thereby reducing the outer diameter of the bushing product and maintaining the reduced pressure state. The reduction action ends and the reduction state is maintained, and the degumming detection action begins. The servo motor 4-1 rotates through the synchronous belt assembly 4-2 to drive the degumming detector 3-1 to move upward, and then drives the degumming detector pressure probe 3-2 to move upward to apply pressure to the inner skeleton of the bushing product and move one end upward by a set distance, and then the degumming detector pressure probe 3-2 is reset to the starting position before the upward push action. When the degumming detection action begins, the displacement sensor 3-1-4 and force sensor 3-1-5 set inside the degumming detector 3-1 collect data, and transmit the force information to the computer in real time for analysis, and perform degumming detection to determine whether degumming occurs. After the detection action is completed, the cylinder piston 2-2 moves downward, the reducing sleeve 1-4 moves downward, the axial sliding pressure head 1-2 is reset under the action of the spring, and the degumming detector pressure probe 3-2 moves upward to send out the bushing, and the bushing can be taken out. The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A new bushing reducing device, characterized in that: It comprises a diameter reducing device (1), an oil cylinder (2), a debonding detection device (3) and a telescopic driving device (4); The oil cylinder (2) comprises a cylinder barrel (2-1), the bottom of the cylinder barrel (2-1) is sealedly connected to the cylinder bottom (2-3), the head of the cylinder barrel (2-1) is fixedly connected to a cylinder mouth inner sleeve (2-4), and the cylinder barrel (2-1) is sealed and movably connected to an oil cylinder piston (2-2); The reducing device (1) is arranged in the cylinder (2-1), and the reducing device (1) comprises a reducing fixture (1-1), the reducing fixture (1-1) is fixedly connected to the bottom surface of the sleeve (2-4) in the cylinder mouth, a plurality of axial sliding pressure heads (1-2) distributed in an annular shape are slidably connected to the reducing fixture (1-1), a hollow cylindrical product placement area (1-3) is formed on the inner side of the axial sliding pressure head (1-2), a reducing sleeve (1-4) which is sleeved and connected is arranged on the outer side of the axial sliding pressure head (1-2), the outer inclined surface of the axial sliding pressure head (1-2) is slidably sleeved with the inner inclined surface of the reducing sleeve (1-4), the bottom end of the reducing sleeve (1-4) is fixedly connected to the connecting gasket (1-5), and the connecting gasket (1-5) is fixed to the upper end of the cylinder piston (2-2); The degumming detection device (3) is located in a reserved center hole of the oil cylinder piston (2-2), and the degumming detection device (3) comprises a degumming detector pressure probe (3-2). The degumming detector pressure probe (3-2) is arranged on the top of the degumming detector (3-1), and the degumming detector (3-1) is connected to the telescopic driving device (4).

2. The novel bushing reducing device according to claim 1 is characterized in that: The reducing clamp (1-1) is provided with a plurality of slide grooves (1-7) distributed in an annular shape around the axis of the reducing clamp (1-1), and the slide grooves (1-7) are slidably engaged with the axis-directed sliding pressure head (1-2).

3. The novel bushing reducing device according to claim 2 is characterized in that: A hanging block (1-6) is provided at the top end of the axially sliding pressure head (1-2), and the hanging block (1-6) is slidably engaged in the sliding groove (1-7); A circular hole (1-2-1) is provided on the axial sliding pressure head (1-2), and a plurality of the circular holes (1-2-1) of the axial sliding pressure heads (1-2) are connected in series in an annular manner via an annular spring (1-2-2); The overall appearance of the axially sliding pressure head (1-2) array is a truncated cone with a large upper diameter and a small lower diameter. The axially sliding pressure head (1-2) array can be elastically slid along the axis to gather or spread on the diameter reduction fixture (1-1).

4. The novel bushing reducing device according to claim 1 is characterized in that: The inner side surface of the reducing sleeve (1-4) is an extrusion surface (1-4-1); the reducing sleeve (1-4) is in the shape of a sleeve with an outer side surface that is a cylindrical surface and an inner side surface that is a conical surface with a larger upper diameter and a smaller lower diameter; the extrusion surface (1-4-1) is fitted into the outer side surface of the array of axially sliding pressure heads (1-2).

5. The novel bushing reducing device according to claim 1 is characterized in that: The telescopic drive device (4) comprises a servo motor (4-1), the servo motor (4-1) is fixedly connected to a support plate (4-4), and the servo motor (4-1) is power-connected to the debonding detector (3-1) via a synchronous belt assembly (4-2); The supporting plate (4-4) is fixedly connected to the cylinder bottom (2-3) via a connecting column (4-3).

6. The novel bushing reducing device according to claim 5 is characterized in that: The degumming detector (3-1) comprises an upper shaft (3-1-6), the degumming detector pressure probe (3-2) is arranged at the top end of the upper shaft (3-1-6), a displacement sensor (3-1-4) is arranged at the bottom end of the upper shaft (3-1-6), the displacement sensor (3-1-4) is slidably connected with the upper shaft (3-1-6), a spring (3-1-3) is arranged in the cavity at the connection between the displacement sensor (3-1-4) and the upper shaft (3-1-6), one end of the spring (3-1-3) abuts against the upper shaft (3-1-6), and the other end abuts against the displacement sensor (3-1-4); The lower end of the displacement sensor (3-1-4) is connected to a force sensor (3-1-5), and the force sensor (3-1-5) is arranged on a base (3-1-1), and the base (3-1-1) is arranged at the top end of the lower rod body (3-1-7). The base (3-1-1) is provided with a protrusion that is slidably connected and matched with a guide groove (3-1-2), and the guide groove (3-1-2) is arranged on the inner wall of the reserved center hole of the cylinder piston (2-2).

7. The novel bushing reducing device according to claim 6 is characterized in that: The synchronous belt assembly (4-2) comprises a first pulley (4-2-1), a second pulley (4-2-2) and a synchronous belt (4-2-3); The first pulley (4-2-1) is fixedly connected to the screw sleeve (4-5), the screw sleeve (4-5) is rotatably connected to the support plate (4-4), and the screw sleeve (4-5) is threadedly connected to the lower rod body (3-1-7); The second pulley (4-2-2) is connected to the first pulley (4-2-1) through the synchronous belt (4-2-3), and the second pulley (4-2-2) is arranged on the output end of the servo motor (4-1).

Images