Quick clamping device for post-inflation chuck

Abstract

The utility model discloses a quick clamping device for a post-inflation chuck, which belongs to the technical field of vulcanizing machines and comprises a fixed seat, a fixed ring is connected above the fixed seat, a plurality of arc-shaped staggered tooth blocks which are circumferentially and uniformly distributed are arranged on the outer side wall of the fixed ring, and the end surfaces, close to the fixed seat, of the arc-shaped staggered tooth blocks are fixed ring matching surfaces. The fixed ring matching surfaces of the plurality of arc-shaped staggered tooth blocks are arranged to be circumferential inclined surfaces with the same angle; the movable ring can be arranged on the fixed ring in a sleeving mode, a plurality of arc-shaped locking blocks corresponding to the arc-shaped staggered-tooth blocks in number and position are arranged on the inner side wall of the movable ring, the end faces, away from the fixed base, of the arc-shaped locking blocks are arranged to be movable ring matching faces, and the movable ring matching faces of the arc-shaped locking blocks are all arranged to be circumferential inclined faces with the same angle as the fixed ring matching face; when the movable ring is matched with the fixed ring, the fixed ring matching face of the arc-shaped staggered tooth block abuts against the movable ring matching face of the arc-shaped locking block, and the movable ring can abut against the fixing base through rotation of the movable ring. By means of the structure, the labor intensity of replacing the chuck can be reduced, and the clamping stability can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of vulcanizing machine technology, specifically to a quick clamping device for a rear-inflated chuck. Background Technology

[0002] After the tires are vulcanized, they need to be placed in the rear inflation device for inflation and shaping. Different clamps are used for tires with different rim diameters. When vulcanizing tires with different rim diameters, the clamps need to be changed to ensure that the tires and clamps are compatible and that there is no air leakage during inflation and pressure holding.

[0003] Currently, most clamps are fixed to the clamp mounting base with multiple screws. Each rear inflation device has multiple clamps, and disassembly and installation are time-consuming and labor-intensive.

[0004] Although there are some quick-installation structures on the market, they all suffer from problems such as low strength and poor clamping fit.

[0005] To address the aforementioned problems, this invention designs and manufactures a rear-inflated chuck quick clamping device to overcome the above-mentioned defects. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a quick clamping device for a rear-inflated chuck, which can reduce the labor intensity of changing the chuck and also ensure the stability of the clamping.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a quick clamping device for a rear-inflated clamping disc includes a fixed base, a fixed ring connected above the fixed base, and a plurality of circumferentially distributed arc-shaped staggered teeth blocks on the outer wall of the fixed ring. The end face of the arc-shaped staggered teeth blocks near the fixed base is set as the fixed ring mating surface, and the fixed ring mating surfaces of the plurality of arc-shaped staggered teeth blocks are all set as circumferential inclined surfaces of the same angle.

[0008] It also includes a moving ring, which can be fitted onto a fixed ring. The inner sidewall of the moving ring is provided with a number of arc-shaped locking blocks corresponding to the number and position of the arc-shaped staggered teeth blocks. The circumferential distance between adjacent arc-shaped locking blocks is greater than the circumferential length of the arc-shaped staggered teeth blocks. The end face of the arc-shaped locking block away from the fixed seat is set as the moving ring mating surface. The moving ring mating surfaces of the arc-shaped locking blocks are all set as circumferential inclined surfaces with the same angle as the mating surface of the fixed ring.

[0009] When the moving ring and the fixed ring are engaged, the fixed ring engagement surface of the arc-shaped staggered tooth block abuts against the moving ring engagement surface of the arc-shaped locking block, and the rotation of the moving ring allows it to abut against the fixed seat.

[0010] Preferably, the distance between the outer side of the arc-shaped staggered tooth block and the center of the fixed ring is not greater than the radius of the inner sidewall of the moving ring;

[0011] The outer radius of the fixed ring is not greater than the distance between the inner side of the arc-shaped locking block and the center of the moving ring.

[0012] Preferably, a boss is provided at the center of the end face of the fixing seat, and the fixing ring is fixed on the boss by screws;

[0013] The inner wall of the moving coil can mate with the boss.

[0014] Preferably, a first sealing ring is provided between the boss and the inner wall of the moving ring, and a first sealing groove for installing the first sealing ring is provided on the side wall of the boss or the inner wall of the moving ring.

[0015] And / or, a second sealing ring is provided between the end faces of the moving ring and the fixed seat, and a second sealing groove for installing the second sealing ring is provided on the end face of the moving ring or the end face of the fixed seat.

[0016] Preferably, when the arc-shaped locking block of the moving ring is installed on the fixed seat, offset from the arc-shaped staggered tooth block of the fixed ring, the lowest position of the mating surface of the moving ring is lower than the highest position of the mating surface of the fixed ring.

[0017] Preferably, the end face of the moving coil that mates with the fixed base is provided with a positioning hole;

[0018] The fixed base is equipped with a controllable telescopic positioning pin, which cooperates with the positioning hole to restrict the rotation of the moving coil.

[0019] Preferably, the positioning hole is a short arc-shaped hole, and the arc center corresponding to the arc-shaped hole coincides with the center of the moving coil.

[0020] Preferably, the arc-shaped locking block includes an arc-shaped base block and an inclined locking block, and the moving coil mating surface is disposed on the inclined locking block.

[0021] Preferably, the inclined locking block is made of steel.

[0022] Preferably, the outer wall of the moving coil is provided with a tool connection structure, and the tool can cooperate with the tool connection structure to drive the moving coil to rotate.

[0023] The advantages of this utility model are:

[0024] 1. When the moving ring and the fixed ring of this utility model are engaged, the two inclined surfaces of the fixed ring mating surface of the arc-shaped locking tooth block and the moving ring mating surface of the arc-shaped locking block are used to tighten them, thereby finally locking and fixing the moving ring on the fixed seat, completing the quick clamping of the clamp, eliminating the operation of disassembling bolts, reducing the labor intensity of changing the clamp, improving the replacement efficiency, and because the circumferential inclined surface of the fixed ring mating surface and the moving ring mating surface have the same angle, it is ensured that the two can form surface contact, and the clamping strength is also improved.

[0025] 2. This utility model utilizes the controllable telescopic positioning pin on the fixed base to cooperate with the positioning hole on the moving coil, ensuring further positioning of the moving coil after tightening through the inclined structure, and improving the stability of the moving coil on the fixed base. In addition, the positioning hole is designed as a short arc hole, which can reduce the assembly difficulty. As long as the sealing effect is not affected, the moving coil is allowed to have a small amount of rotation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a quick-clamping device for a rear-inflated chuck during replacement.

[0027] Figure 2 An exploded view of a rear-inflating chuck quick-clamping device;

[0028] Figure 3 This is a top view of the present invention;

[0029] Figure 4 This is a cross-sectional view of the present invention along the AA direction;

[0030] Figure 5 This is a top view of the moving coil of this utility model without the inclined locking block;

[0031] Figure 6 This is a cross-sectional view of the moving coil removing the inclined locking block in the BB direction of this utility model;

[0032] Figure 7 This is a bottom view of the moving coil of this utility model;

[0033] Figure 8 This is the front view of the ring-fixing device of this utility model;

[0034] Figure 9 This is a top view of the ring of this utility model.

[0035] In the diagram: 1. Fixed seat; 2. Fixed ring; 3. Moving ring; 11. Second sealing groove; 12. First sealing groove; 13. Boss; 14. Knob plunger; 21. Arc-shaped staggered tooth block; 22. Fixed ring mating surface; 31. Arc-shaped base block; 32. Angled locking block; 33. Moving ring mating surface; 34. Tool connection structure; 35. Positioning hole. Detailed Implementation

[0036] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0037] like Figures 1 to 9 As shown, a quick clamping device for a rear-inflated chuck includes a fixed base 1, with a retaining ring 2 connected above the fixed base 1. Specifically, a boss 13 is provided at the center of the end face of the fixed base 1, and the retaining ring 2 is fixed to the boss 13 by screws.

[0038] The outer wall of the fixed ring 2 is provided with a number of circumferentially distributed arc-shaped staggered teeth blocks 21. The arc-shaped staggered teeth blocks 21 and the fixed ring 2 are preferably integrated. The arc center of the arc-shaped staggered teeth blocks 21 coincides with the center of the fixed ring 2. The end face of the arc-shaped staggered teeth blocks 21 near the fixed base 1 is set as the fixed ring mating surface 22. The fixed ring mating surfaces 22 of the number of arc-shaped staggered teeth blocks 21 are all set as circumferential inclined surfaces with the same angle.

[0039] It also includes a moving ring 3, which can be fitted onto the fixed ring 2. The inner wall of the moving ring 3 is provided with a number of arc-shaped locking blocks corresponding to the number and position of the arc-shaped staggered teeth blocks 21. The circumferential distance between adjacent arc-shaped locking blocks is greater than the circumferential length of the arc-shaped staggered teeth blocks 21, ensuring that the arc-shaped locking blocks of the moving ring 3 can be staggered from the arc-shaped staggered teeth blocks 21 of the fixed ring 2 and move axially relative to each other.

[0040] The end face of the arc-shaped locking block away from the fixed base 1 is set as the moving ring mating surface 33. The moving ring mating surface 33 of several arc-shaped locking blocks is set as a circumferential inclined surface at the same angle as the fixed ring mating surface 22. This structure ensures that the two can form a surface-to-surface contact, which also improves the clamping fit strength.

[0041] Specifically, when the moving ring 3 and the fixed ring 2 are engaged, the fixed ring mating surface 22 of the arc-shaped staggered tooth block 21 abuts against the moving ring mating surface 33 of the arc-shaped locking block. The rotation of the moving ring 3 allows it to abut against the fixed seat 1, completing the quick connection and clamping of the clamping plate. This eliminates the need to remove the bolts, reduces the labor intensity of replacing the clamping plate, and improves the replacement efficiency.

[0042] The distance between the outer side of the arc-shaped staggered tooth block 21 and the center of the fixed ring 2 is not greater than the radius of the inner wall of the moving ring 3, and the outer radius of the fixed ring 2 is not greater than the distance between the inner side of the arc-shaped locking block and the center of the moving ring 3, ensuring that the fixed ring 2 can rotate in the moving ring 3.

[0043] The inner wall of the moving coil 3 of this utility model can cooperate with the boss 13. A first sealing ring is provided between the boss 13 and the inner wall of the moving coil 3. A first sealing groove 12 for installing the first sealing ring is provided on the side wall of the boss 13 or the inner wall of the moving coil 3. And / or, a second sealing ring is provided between the end face of the moving coil 3 and the fixed seat 1. A second sealing groove 11 for installing the second sealing ring is provided on the end face of the moving coil 3 or the end face of the fixed seat 1, thereby preventing gas leakage and ensuring sealing effect.

[0044] When the arc-shaped locking block of the moving ring 3 is offset from the arc-shaped staggered tooth block 21 of the fixed ring 2 and installed on the fixed base 1, since the moving ring 3 contacts the second sealing ring first, in order to avoid the moving ring 3 being restricted by the second sealing ring and not properly cooperating with the fixed ring 2, it is required that the lowest position of the moving ring mating surface 33 is lower than the highest position of the fixed ring mating surface 22, so as to ensure that when the moving ring 3 rotates, the fixed ring mating surface 22 of the arc-shaped staggered tooth block 21 can abut against the moving ring mating surface 33 of the arc-shaped locking block.

[0045] The moving coil 3 of this utility model preferably has a positioning hole 35 on the end face that mates with the fixed base 1. The fixed base 1 is provided with a controllable telescopic positioning pin, which is preferably a knob plunger 14. The positioning pin and the positioning hole 35 can restrict the rotation of the moving coil 3, ensuring the further positioning of the moving coil 3 after it is tightened through the inclined structure, and improving the stability of the moving coil 3 on the fixed base 1.

[0046] The positioning hole 35 is preferably designed as a short arc-shaped hole, and the arc center corresponding to the short arc-shaped hole coincides with the center of the moving coil 3. This structure can reduce the assembly difficulty, and as long as the sealing effect is not affected, the moving coil 3 is allowed to have a small amount of rotation.

[0047] The arc-shaped locking block of this utility model preferably includes an arc-shaped base block 31 and an inclined locking block 32. The moving coil mating surface 33 is set on the inclined locking block 32. Specifically, a circumferential inclined surface can be machined on the arc-shaped base block 31, and the inclined locking block 32 can be directly installed on the circumferential inclined surface. Alternatively, a circumferential inclined surface can be machined on the inclined locking block 32. Both methods can meet the usage requirements. The inclined locking block 32 is preferably made of steel, which can play a certain protective role for the aluminum moving coil 3 and improve its wear service life.

[0048] The outer wall of the moving coil 3 is preferably provided with a tool connection structure 34. The tool can cooperate with the tool connection structure 34 to drive the moving coil 3 to rotate. The tool connection structure 34 can be a threaded hole. The workpiece can be directly screwed into the threaded hole to drive the moving coil 3 to rotate on the fixed seat 1.

[0049] The specific replacement process of this utility model is as follows:

[0050] First, the arc-shaped locking block of the moving ring 3 is offset from the arc-shaped staggered tooth block 21 of the fixed ring 2. Then, the moving ring 3 is fitted onto the fixed ring 2 and placed on the fixed seat 1.

[0051] Then rotate the moving ring 3 and tighten it using the two inclined surfaces of the fixed ring mating surface 22 of the arc-shaped locking tooth block and the moving ring mating surface 33 of the arc-shaped locking block;

[0052] Finally, by using the knob plunger 14 on the fixed base 1 to cooperate with the positioning hole 35 on the moving coil 3, the rotation of the moving coil 3 can be restricted.

[0053] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A post-puff chuck quick clamping device, characterized in that, The fixed seat (1) is connected with a fixed ring (2) above, the outer side wall of the fixed ring (2) is provided with a plurality of circumferentially distributed arc-shaped staggered tooth blocks (21), the end face of the arc-shaped staggered tooth block (21) close to the fixed seat (1) is provided with a fixed ring matching surface (22), the fixed ring matching surface (22) of a plurality of arc-shaped staggered tooth blocks (21) is provided with a same angle circumferential inclined surface; Further comprising a movable ring (3), the movable ring (3) can be sleeved on the fixed ring (2), the inner side wall of the movable ring (3) is provided with a plurality of arc-shaped lock blocks corresponding to the number and position of the arc-shaped staggered tooth blocks (21), the circumferential distance between adjacent arc-shaped lock blocks is greater than the circumferential length of the arc-shaped staggered tooth block (21), the end face of the arc-shaped lock block away from the fixed seat (1) is provided with a movable ring matching surface (33), the movable ring matching surface (33) of a plurality of arc-shaped lock blocks is provided with a same angle circumferential inclined surface as the fixed ring matching surface (22). When the movable ring (3) cooperates with the fixed ring (2), the fixed ring matching surface (22) of the arc-shaped staggered tooth block (21) is abutted on the movable ring matching surface (33) of the arc-shaped lock block, and the rotation of the movable ring (3) can make the movable ring (3) abut on the fixed seat (1).

2. A post-inflatable chuck rapid clamping device according to claim 1, characterized in that, The distance between the outer side of the arc-shaped staggered tooth block (21) and the center of the fixed ring (2) is not greater than the radius of the inner side wall of the movable ring (3); The outer radius of the fixed ring (2) is not greater than the distance between the inner side of the arc-shaped lock block and the center of the movable ring (3).

3. A post-inflatable chuck rapid clamping device according to claim 1, characterized in that, The end face center of the fixed seat (1) is provided with a boss (13), and the fixed ring (2) is fixed on the boss (13) through a screw; The inner side wall of the movable ring (3) can cooperate with the boss (13).

4. A post-inflatable chuck rapid clamping device according to claim 3, characterized in that, A first sealing ring is arranged between the boss (13) and the inner side wall of the movable ring (3), and a first sealing groove (12) for installing the first sealing ring is arranged on the side wall of the boss (13) or the inner side wall of the movable ring (3); And / or, a second sealing ring is arranged between the end face of the movable ring (3) abutting against the fixed seat (1), and a second sealing groove (11) for installing the second sealing ring is arranged on the end face of the movable ring (3) or the end face of the fixed seat (1).

5. A post-inflatable chuck rapid clamping device according to claim 1, characterized in that, When the arc-shaped lock block of the movable ring (3) is staggered with the arc-shaped staggered tooth block (21) of the fixed ring (2) installed on the fixed seat (1), the lowest position of the movable ring matching surface (33) is lower than the highest position of the fixed ring matching surface (22).

6. A post-inflatable chuck rapid clamping device according to claim 1, characterized in that, A positioning hole (35) is arranged on the end face of the movable ring (3) cooperating with the fixed seat (1); A controllable telescopic positioning pin is arranged on the fixed seat (1), and the positioning pin can cooperate with the positioning hole (35) to limit the rotation of the movable ring (3).

7. A post-inflatable chuck rapid clamping device according to claim 6, characterized in that, The positioning hole (35) is arranged as a short arc-shaped hole, and the arc-shaped center corresponding to the arc-shaped hole coincides with the center of the movable ring (3).

8. A post-inflatable chuck rapid clamping device according to claim 1, characterized in that, The arc-shaped lock block comprises an arc-shaped base block (31) and an inclined surface lock block (32), and the movable ring matching surface (33) is arranged on the inclined surface lock block (32).

9. A post-inflatable chuck rapid clamping device according to claim 8, characterized in that, The inclined surface lock block (32) is made of steel.

10. A post-inflatable chuck rapid clamping device according to claim 1, characterized in that, A tool connecting structure (34) is arranged on the outer side wall of the movable ring (3), and a tool can cooperate with the tool connecting structure (34) to drive the movable ring (3) to rotate.

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