Carcass turn-up wire ring device

Abstract

The invention discloses a carcass turn-up wire ring device, the turn-up mechanism of which includes a connecting rod transmission pair evenly distributed on the rear side of a groove plate, the groove plate is installed on the tailstock main shaft through a bearing structure, each connecting rod transmission pair includes a push rod, a transmission rod and a push rod, one end of the transmission rod is hinged to the bottom of the groove plate, one end of the push rod is hinged to the other end of the transmission rod, and the other end of the push rod is hinged to a "T"-shaped slide bar, the "T"-shaped slide bar is slidably installed in a radial "T"-shaped slide groove correspondingly opened on the rear side of the groove plate, and a push block is installed on the top of the "T"-shaped slide bar, one end of the push rod is hinged to the transmission rod, and the other end of the push rod is hinged to a piston sleeve extending forward of a built-in cylinder, and the built-in cylinder is installed on the tailstock main shaft through a cylinder seat; adjacent push blocks are connected by an overlap structure to form a non-spaced annular turn-up top surface. The invention has a compact structure, and the use of a connecting rod transmission pair makes the annular turn-up top surface have a large expansion range and a high turn-up height.

Description

Technical Field

[0001] The invention relates to tire manufacturing equipment, in particular to a tire body turn-up wire ring device. Background Art

[0002] When the all-steel radial giant tire is formed, the mechanical wrapping of the tire body is completed by the pulling device and the edge wrapping device respectively.

[0003] The mechanical hemming device of the prior art is composed of a plurality of finger-shaped rods with rollers at the front end. When the hemming is reversed, the finger-shaped rods are opened in an umbrella shape, and the circumferential distance between the rollers gradually increases. There are gradually more places where the rollers cannot press the tire body. Even if there are springs to assist between adjacent rollers, the rollers and the springs are not at the same height, resulting in unevenness. After the hemming is completed, the distance from the end of the tire wire to the center of the drum is quite different, which has an adverse effect on product quality. Summary of the invention

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to propose a carcass turn-up wire ring device which can improve product quality.

[0005] The tire body turn-up wire ring device capable of solving the above-mentioned technical problems, its technical solution includes a turn-up mechanism, the difference is that the turn-up mechanism includes a connecting rod transmission pair that is evenly distributed around the circumference and radially arranged on the rear side of the groove plate, the groove plate is installed on the tailstock main shaft through a bearing structure, each connecting rod transmission pair includes a push rod, a transmission rod and a push rod, one end of the transmission rod is hinged to the bottom of the groove plate, one end of the push rod is hinged to the other end of the transmission rod, and the other end of the push rod is hinged to a "T"-shaped sliding bar, the "T"-shaped sliding bar is slidably installed in a radial "T"-shaped sliding groove correspondingly opened on the rear side surface of the groove plate, one end of the push rod is hinged to the transmission rod, and the other end of the push rod is hinged to a piston sleeve extending forward of a built-in cylinder, and the built-in cylinder is installed on the tailstock main shaft through a cylinder seat; a top block is installed on the top of the "T"-shaped sliding bar, and adjacent top blocks are connected by an overlapping structure to form a non-spaced (i.e. continuous) annular turn-up top surface.

[0006] Furthermore, the cylinder seat includes a ventilation sleeve seat installed on the tailstock spindle and a ventilation sleeve installed on the ventilation sleeve seat, the air channel I in the ventilation sleeve seat is connected to an external compressed air source, and the air channels II and III in the ventilation sleeve are respectively connected to the air ports I and II on the front and rear ends of the built-in cylinder body through air pipes I and II.

[0007] When the piston sleeve is turned upside down, the piston sleeve moves forward and radially expands each top block synchronously through the connecting rod transmission pair to expand the annular turn-up top surface.

[0008] When the reverse package is completed, the piston sleeve moves backwards and the connecting rod transmission pair synchronously radially contracts each top block to reduce the annular reverse package top surface.

[0009] Beneficial effects of the present invention:

[0010] 1. In the structure of the carcass turn-up wire ring device of the present invention, the enlarged annular turn-up top surface can support the wire ring to turn up the carcass, and the annular turn-up top surface without a spacer structure will not cause the carcass wire ring to bend out of place due to the spacer when turning up the carcass to form a height difference.

[0011] 2. In the structure of the present invention, the expansion range of the top surface of the annular inverted package is large and the inverted package height is in place.

[0012] 3. The present invention is particularly suitable for the production of large tires, but can also be adapted to the production of small and medium-sized tires. Even if small-sized tires are produced, no scratches will be caused to the tire body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an implementation mode of the present invention.

[0014] Figure 2 for Figure 1 Schematic diagram of the operation of the implementation method (shown as the expansion and contraction of the top surface of the annular inverted package).

[0015] Figure number identification: 1. Push rod; 2. Transmission rod; 3. Push rod; 4. Grooved plate; 5. "T"-shaped slide rod; 6. Push block; 7. Annular reversed top surface; 8. Bearing; 9. Tail stock spindle; 10. Built-in cylinder; 10-1 piston sleeve; 11. Breathing sleeve seat; 12. Breathing sleeve; 13. Wire ring; 14. Carcass. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0017] The carcass wire ring wrapping device of the present invention is a mechanism for wrapping the carcass 14 on the wire ring 13. Figure 1 shown.

[0018] The carcass turn-up wire ring device of the present invention comprises a turn-up mechanism, wherein the turn-up mechanism is sequentially arranged on the front end of the tailstock spindle 9 with a groove plate 4, a connecting rod transmission pair and a built-in cylinder 10 from front to back. Figure 1 shown.

[0019] The built-in cylinder 10 is installed on the tailstock spindle 9 through a cylinder seat, and the cylinder seat includes a ventilation sleeve seat 11 and a ventilation sleeve 12. The ventilation sleeve seat 11 is set and fixed on the tailstock spindle 9, and the ventilation sleeve 12 is set on the middle and rear part of the ventilation sleeve seat 11. An air channel I is opened in the rear part of the ventilation sleeve seat 11, and the rear end of the air channel I is connected to the external compressed air source through a pipe joint. The ventilation sleeve 12 is provided with front and rear air channels II and air channels III. The air channels II and air channels III are connected to the air ports I and II on the front and rear ends of the cylinder body of the built-in cylinder 10 (installed on the rear part of the ventilation sleeve 12) through the front and rear air pipes I and II, respectively. The piston sleeve 10-1 of the built-in cylinder 10 is slidably set on the front part of the ventilation sleeve 12 at the bottom of the front end of the cylinder body, such as Figure 1 shown.

[0020] The groove plate 4 is installed on the front part of the ventilation sleeve seat 11 through the bearing 8, and the front end of the outer ring of the bearing 8 is limited by the front end top cover (installed on the front end of the ventilation sleeve seat 11) and the pressure cover (installed on the front end surface of the groove plate 4). The rear end of the outer ring of the bearing 8 is limited by the shaft step on the ventilation sleeve seat 11 and the bottom of the bearing hole of the groove plate 4. The shaft step is also the front end limit of the ventilation sleeve 12, and the front end of the ventilation sleeve 12 is the limit of the bearing hole of the groove plate 4 (i.e., the bottom of the groove plate 4). The rear end surface of the groove plate 4 is provided with radial "T"-shaped grooves evenly distributed around the circumference, and a "T"-shaped slide bar 5 is slidably installed in each "T"-shaped groove. The top of each "T"-shaped slide bar 5 grows a corresponding "T"-shaped groove and is installed with a top block 6. Adjacent top blocks 6 are connected by an overlap structure to form a non-spaced annular reversed top surface 7, such as Figure 1 , Figure 2 shown.

[0021] The connecting rod transmission pairs are evenly distributed around the circumference and are radially arranged corresponding to each "T"-shaped slide bar 5. Each connecting rod transmission pair includes a push rod 3, a transmission rod 2 and a push rod 1 from top to bottom. One end of the push rod 1 is hinged to the corresponding position of the front end of the piston sleeve 10-1, one end of the transmission rod 2 is hinged to the bottom of the groove plate 4, the middle rod body of the transmission rod 2 is hinged to the other end of the push rod 1, one end of the push rod 3 is hinged to the rod body of the "T"-shaped slide bar 5, and the other end of the push rod 3 is hinged to the other end of the transmission rod 2; through the transmission of the connecting rod transmission pairs evenly distributed around the circumference, the forward and backward movement of the piston sleeve 10-1 can be converted into the expansion and contraction of the annular reversed top surface 7, such as Figure 1 , Figure 2 shown.

[0022] The operation mode of the present invention is:

[0023] 1. When reverse packing, the compressed air source enters the built-in cylinder 10 from the air port II through the air channel I, the air channel III, and the air pipe II. The pressurized gas acts on the rear end of the piston sleeve 10-1 (the rear end in the cylinder body) to push the entire piston sleeve 10-1 forward. The piston sleeve 10-1 moving forward expands the annular reverse packing top surface 7 through the connecting rod transmission pair to form a support for the wire ring 13 buckled on the edge of the tire body 14.

[0024] 2. The tailstock spindle 9 moves forward to drive the turn-up mechanism to move forward, thereby realizing the turn-up of the wire ring 13 by the carcass 14.

[0025] 3. After the reverse wrapping is completed, the tailstock spindle 9 moves backward to drive the reverse wrapping mechanism to exit the reverse wrapping position.

[0026] 4. The compressed air source enters the built-in cylinder 10 from the air port I through the air channel I, the air channel II, and the air pipe I. The pressurized gas acts on the rear end of the piston sleeve 10-1 (the front end in the cylinder body) to push the entire piston sleeve 10-1 to move backward. The backward-moving piston sleeve 10-1 returns to its original position by reducing the annular reversed top surface 7 through the connecting rod transmission pair.

Claims

1. A carcass turn-up wire ring device, including a turn-up mechanism, characterized in that: The turn-up mechanism comprises connecting rod transmission pairs which are evenly distributed around the circumference and radially arranged on the rear side of the groove plate (4); the groove plate (4) is mounted on the tailstock spindle (9) via a bearing structure; each connecting rod transmission pair comprises a push rod (1), a transmission rod (2) and a push rod (3); one end of the transmission rod (2) is hinged to the bottom of the groove plate (4); one end of the push rod (3) is hinged to the other end of the transmission rod (2); the other end of the push rod (3) is hinged to a "T"-shaped slide rod (5); the "T"-shaped slide rod (5) slides Installed in a radial "T"-shaped slide groove correspondingly opened on the rear side of the groove plate (4), one end of the push rod (1) is hinged to the transmission rod (2), and the other end of the push rod (1) is hinged to a piston sleeve (10-1) extending forward of the built-in cylinder (10), and the built-in cylinder (10) is installed on the tailstock spindle (9) through a cylinder seat; a top block (6) is installed on the top of the "T"-shaped slide rod (5), and adjacent top blocks (6) are connected by an overlap structure to form a non-spaced annular reversed top surface (7); The piston sleeve (10-1) moves forward to synchronously radially expand each top block (6) through the connecting rod transmission pair, thereby expanding the annular reversed top surface (7); The piston sleeve (10-1) moves backwards, and the connecting rod transmission pair synchronously radially contracts each top block (6), thereby reducing the annular reversed top surface (7).

2. The carcass turn-up wire ring device according to claim 1, characterized in that: The cylinder seat comprises a vent seat (11) mounted on the tailstock spindle (9) and a vent sleeve (12) mounted on the vent seat (11); an air passage I in the vent seat (11) is connected to an external compressed air source; air passages II and III in the vent sleeve (12) are connected to air ports I and II on the front and rear ends of a cylinder body of a built-in air cylinder (10) respectively through air pipes I and II.

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