Pneumatic expansion type ring supporting mechanism

Abstract

The utility model belongs to the technical field of tire processing machinery, and particularly relates to a pneumatic expansion type ring supporting mechanism which comprises a mounting seat, an adjusting seat is mounted at the front end of the mounting seat through a flange, a rear pressing disc is mounted at the front end of the adjusting seat through a flange, and a driving disc is rotatably connected to the front end of the rear pressing disc. The back of the driving disc is fixedly connected with a transmission shaft, a fixing seat is installed on the outer wall of the adjusting seat through bolts, an air cylinder is hinged to the fixing seat, the tail end of a telescopic shaft of the air cylinder is movably connected with a driving block, and the driving block is fixedly connected with the transmission shaft. Under the action of the air cylinder, the driving disc is driven to rotate along the annular groove of the ring supporting fixing disc, meanwhile, the deep groove ball bearing is driven to move along the oval groove of the driving disc, the ring supporting claw pieces are driven by the connecting shaft and restrained by the guide block to move in the radial direction, and therefore the expanding and shrinking action of the ring supporting mechanism is achieved, and meanwhile the ring supporting mechanism is suitable for steel wire rings of different diameters and good in applicability.

Description

Technical Field

[0001] This utility model relates to the field of tire processing machinery technology, specifically to a pneumatic expansion and contraction type tire support mechanism. Background Technology

[0002] Currently, the dimensions of special tire wire bead sizes require adjustments to the inner diameter of the wire bead within a certain range based on actual working conditions and forming processes, all within the same inch size, to meet specific needs. A search reveals a utility model patent with publication number CN212386058U, which discloses a tire wire bead rotating support device. Its rotating mechanism includes a rotating platform driven by a rotary servo motor, with a support frame mounted on the platform. The support mechanism includes upper and lower support arms, which are mounted on the support frame via left and right sliding pairs. The upper and lower support arms perform synchronous opening and closing movements under the drive of a ball screw transmission pair driven by the support servo motor. However, traditional support mechanisms are fixed, and each support mechanism can only accommodate one wire bead diameter, requiring tooling changes to meet the forming requirements of different diameter wire bead sizes. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide a pneumatic expansion and contraction type support ring mechanism, which solves the problem that the traditional support ring mechanism is fixed and each type of support ring mechanism can only meet one type of wire ring diameter, resulting in poor applicability.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pneumatic expansion and contraction support ring mechanism, including a mounting base, an adjusting base mounted on the front end of the mounting base via a flange, a rear pressure plate mounted on the front end of the adjusting base via a flange, a drive plate rotatably connected to the front end of the rear pressure plate, a transmission shaft fixedly connected to the back of the drive plate, a fixing base mounted on the outer wall of the adjusting base via bolts, a cylinder hinged on the fixing base, a drive block movably connected to the end of the telescopic shaft of the cylinder, the drive block being fixedly connected to the transmission shaft, a fixing plate fixedly connected to the front end of the drive plate, multiple guide blocks mounted on the fixing plate via bolts, a support ring claw piece slidably connected between adjacent guide blocks, and the support ring claw piece slidably connected to the fixing plate, a connecting shaft fixedly connected to the support ring claw piece, a deep groove ball bearing mounted on the outer side of the connecting shaft, an elliptical groove formed inside the drive plate, the elliptical groove penetrating the drive plate, and the deep groove ball bearing slidably connected within the elliptical groove.

[0005] Preferably, a plurality of positioning blocks are fixedly connected to the front end of the mounting base, and the positioning blocks engage with the adjusting base. The positioning blocks serve to position the adjusting base on the mounting base.

[0006] Preferably, a wear-resistant pad is fixedly connected to the back of the drive disk, and the wear-resistant pad is in contact with the fixed disk. The wear-resistant pad serves to position the fixed disk on the drive disk.

[0007] Preferably, a protrusion is fixedly connected to the inner side of the guide block, and an oil-storing sponge and an inclined block are slidably connected inside the support ring claw piece. The oil-storing sponge and the inclined block are in contact with each other. A sliding pin is slidably connected inside the support ring claw piece, and the sliding pin is set through the support ring claw piece. One end of the sliding pin abuts against the protrusion, and the other end of the sliding pin abuts against the inclined surface of the inclined block. An oil outlet hole is opened inside the support ring claw piece, and the position of the oil outlet hole corresponds to the position of the oil-storing sponge and the guide block. During the sliding guidance of the support ring claw piece through the guide block, the sliding pin will be retracted into the support ring claw piece by the reaction force of the protrusion, and by cooperating with the inclined surface of the inclined block, it will squeeze the oil-storing sponge and release lubricating oil, thereby reducing the wear between the support ring claw piece and the guide block, and thus ensuring the smooth extension and retraction of the support ring claw piece each time.

[0008] Preferably, a limiting block is fixedly connected to one end of the sliding pin located inside the support ring claw. The limiting block provides axial restraint for the sliding pin.

[0009] Preferably, a guide rod is fixedly connected inside the support ring claw piece. The guide rod is slidably connected to the inclined block. A spring is installed inside the inclined block. One end of the spring is fixedly connected to the guide rod, and the other end of the spring is fixedly connected to the inner surface of the inclined block. The guide rod and spring provide guidance for the force-induced sliding of the inclined block.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This utility model includes a mounting base, an adjusting base fixed to the front end of the mounting base by fastening screws, and support ring claws evenly distributed in the slots on the front end face of the fixed plate along the circumferential direction. Two sets of cylinders are mounted on the cylinder body of the adjusting base. An elliptical groove is provided on the drive plate corresponding to the position of multiple support ring claws. Under the action of the cylinders, the drive plate is driven to rotate along the annular groove of the support ring fixed plate, and at the same time, the deep groove ball bearing is driven to move along the elliptical groove of the drive plate. Under the drive of the connecting shaft and the constraint of the guide block, the support ring claws move radially, thereby realizing the expansion and contraction action of the support ring mechanism. It is applicable to steel wire rings of different diameters and has good applicability. Attached Figure Description

[0012] Figure 1 This is a perspective view of the overall structure of this utility model;

[0013] Figure 2 For the present utility model Figure 1 A partial structural diagram;

[0014] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A;

[0015] Figure 4 For the present utility model Figure 1 A partial structural side sectional view;

[0016] Figure 5 For the present utility model Figure 4 Enlarged view of the structure at point B.

[0017] In the diagram: 1. Mounting base; 2. Adjusting base; 3. Positioning block; 4. Fixing plate; 5. Rear pressure plate; 6. Support ring claw; 7. Guide block; 8. Cylinder; 9. Fixing base; 10. Drive block; 11. Drive shaft; 12. Drive plate; 13. Deep groove ball bearing; 14. Connecting shaft; 15. Wear-resistant gasket; 16. Protrusion; 17. Sliding pin; 18. Limiting block; 19. Oil reservoir sponge; 20. Inclined block; 21. Guide rod; 22. Spring; 23. Oil outlet. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 The pneumatic expansion and contraction support ring mechanism includes a mounting base 1. An adjusting seat 2 is mounted on the front end of the mounting base 1 via a flange. Multiple positioning blocks 3 are fixedly connected to the front end of the mounting base 1, and the positioning blocks 3 engage with the adjusting seat 2. The positioning blocks 3 position the adjusting seat 2 on the mounting base 1. A rear pressure plate 5 is mounted on the front end of the adjusting seat 2 via a flange. A drive plate 12 is rotatably connected to the front end of the rear pressure plate 5. A drive shaft 11 is fixedly connected to the back of the drive plate 12. A fixing seat 9 is bolted to the outer wall of the adjusting seat 2. A cylinder 8 is hinged to the fixing seat 9. A drive block 10 is movably connected to the end of the telescopic shaft of the cylinder 8. The drive block 10 is fixedly connected to the drive shaft 11. A fixing plate 4 is fixedly connected to the front end of the drive plate 12. A wear-resistant gasket 15 is fixedly connected to the back of the drive plate 12, and the wear-resistant gasket 15 contacts the fixing plate 4. The wear-resistant gasket 15 positions the fixing plate 4 on the drive plate 12.

[0020] Please see Figure 1 , Figure 4Multiple guide blocks 7 are bolted to the fixed disk 4. A support ring claw 6 is slidably connected between two adjacent guide blocks 7. The support ring claw 6 is slidably connected to the fixed disk 4. A connecting shaft 14 is fixedly connected to the support ring claw 6. A deep groove ball bearing 13 is installed on the outer side of the shaft of the connecting shaft 14. An elliptical groove is opened inside the drive disk 12. The elliptical groove is set through the drive disk 12. The deep groove ball bearing 13 is slidably connected in the elliptical groove.

[0021] Please see Figure 4-5 A protrusion 16 is fixedly connected to the inner side of the guide block 7. An oil-storing sponge 19 and a inclined block 20 are slidably connected inside the support ring claw plate 6. The oil-storing sponge 19 and the inclined block 20 are in contact with each other. A sliding pin 17 is slidably connected inside the support ring claw plate 6, and the sliding pin 17 is set through the support ring claw plate 6. One end of the sliding pin 17 abuts against the protrusion 16, and the other end of the sliding pin 17 abuts against the inclined surface of the inclined block 20. An oil outlet hole 23 is opened inside the support ring claw plate 6, and the position of the oil outlet hole 23 corresponds to the position of the oil-storing sponge 19 and the guide block 7. During the sliding guidance of the support ring claw plate 6 through the guide block 7, the sliding pin 17 will be retracted into the support ring claw plate 6 by the reaction force of the protrusion 16. And through the cooperation with the inclined surface of the inclined block 20, it squeezes the oil-storing sponge 19 and releases lubricating oil, thereby reducing the wear between the support ring claw plate 6 and the guide block 7, and thus ensuring the smooth extension and retraction of the support ring claw plate 6 each time. One end of the sliding pin 17, located inside the support ring claw plate 6, is fixedly connected to a limiting block 18. The limiting block 18 provides axial positioning for the sliding pin 17. A guide rod 21 is fixedly connected inside the support ring claw plate 6. The guide rod 21 is slidably connected to the inclined block 20. A spring 22 is installed inside the inclined block 20. One end of the spring 22 is fixedly connected to the guide rod 21, and the other end is fixedly connected to the inner surface of the inclined block 20. The guide rod 21 and the spring 22 guide the sliding movement of the inclined block 20 under force.

[0022] The specific implementation process of this utility model is as follows: In use, firstly, the steel wire ring is manually placed onto the support ring claw plate 6. By triggering the button, the telescopic shaft of the solenoid valve controls the cylinder 8 to extend. Through the drive block 10 and transmission shaft 11 at the front end of the telescopic shaft, the drive disc 12 is driven to rotate in the annular groove of the fixed disc 4. During the rotation, the drive disc 12 drives the deep groove ball bearing 13 and the connecting shaft 14 to move along the elliptical guide groove on it. Under the drive of the connecting shaft 14 and the constraint of the guide block 7, the support ring claw plate 6 moves radially along the circumference of the support ring fixed disc 4, thereby realizing the expansion and contraction action of the support ring mechanism. When it is necessary to verify the accuracy of the mechanism, the fixing screws of the adjusting seat 2 and the mounting seat 1 and the set screws of the positioning block 3 are loosened. The coaxiality of the support ring seat and the forming drum is checked by a dial indicator. After the adjustment meets the process requirements, the set screws of each positioning block 3 are tightened, and the fixing screws of the adjusting seat 2 and the mounting seat 1 are tightened at the same time. The overall operation is simple and maintenance is convenient.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic expansion and contraction type support ring mechanism, including a mounting base (1), characterized in that: An adjusting seat (2) is mounted on the front end of the mounting base (1) via a flange. A rear pressure plate (5) is mounted on the front end of the adjusting seat (2) via a flange. A drive plate (12) is rotatably connected to the front end of the rear pressure plate (5). A drive shaft (11) is fixedly connected to the back of the drive plate (12). A fixing seat (9) is bolted to the outer wall of the adjusting seat (2). A cylinder (8) is hinged to the fixing seat (9). A drive block (10) is movably connected to the end of the telescopic shaft of the cylinder (8). The drive block (10) is fixedly connected to the drive shaft (11). The drive plate (12) has... A fixed plate (4) is fixedly connected to the front end. Multiple guide blocks (7) are installed on the fixed plate (4) by bolts. A support ring claw plate (6) is slidably connected between two adjacent guide blocks (7). The support ring claw plate (6) is slidably connected to the fixed plate (4). A connecting shaft (14) is fixedly connected to the support ring claw plate (6). A deep groove ball bearing (13) is installed on the outer side of the shaft of the connecting shaft (14). An elliptical groove is opened inside the drive plate (12). The elliptical groove is set through the drive plate (12). The deep groove ball bearing (13) is slidably connected in the elliptical groove.

2. The pneumatic expansion and contraction support ring mechanism according to claim 1, characterized in that: The front end of the mounting base (1) is fixedly connected to a plurality of positioning blocks (3), and the positioning blocks (3) are engaged with the adjusting base (2).

3. The pneumatic expansion and contraction support ring mechanism according to claim 1, characterized in that: A wear-resistant pad (15) is fixedly connected to the back of the drive disk (12), and the wear-resistant pad (15) is in contact with the fixed disk (4).

4. The pneumatic expansion and contraction support ring mechanism according to claim 1, characterized in that: The guide block (7) is fixedly connected to the inner side of a protrusion (16). The support ring claw plate (6) is slidably connected to an oil storage sponge (19) and a slope block (20). The oil storage sponge (19) and the slope block (20) are in contact with each other. The support ring claw plate (6) is slidably connected to a sliding pin (17), and the sliding pin (17) is set through the support ring claw plate (6). One end of the sliding pin (17) abuts against the protrusion (16), and the other end of the sliding pin (17) abuts against the slope of the slope block (20). The support ring claw plate (6) is provided with an oil outlet hole (23), and the position of the oil outlet hole (23) corresponds to the position of the oil storage sponge (19) and the guide block (7).

5. The pneumatic expansion and contraction support ring mechanism according to claim 4, characterized in that: The sliding pin (17) is fixedly connected to a limiting block (18) at one end inside the support ring claw plate (6).

6. The pneumatic expansion and contraction support ring mechanism according to claim 4, characterized in that: The inside of the support ring claw piece (6) is fixedly connected to a guide rod (21), the guide rod (21) is slidably connected to the inclined block (20), and a spring (22) is provided inside the inclined block (20). One end of the spring (22) is fixedly connected to the guide rod (21), and the other end of the spring (22) is fixedly connected to the inner surface of the inclined block (20).

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