A three compound left and right sidewall pre-die device

Abstract

The utility model relates to tire presser technology field discloses a kind of left and right side pre-die of three kinds of rubber compound composite extrusion, including die plate main body one, die plate main body two, left side pre-die and right side pre-die, the top of die plate main body one is provided with die plate main body two.The left and right side pre-die of three kinds of rubber compound composite extrusion realizes centering design by pre-die device in back 3 glue inlet positions, while left side pre-die and right side pre-die mirror image design, after right side production, by the face of die and the switching of pre-die left side extrusion of same piece die is realized, effectively solve the problem that tire side needs to be reversed after curling, improve production efficiency, and same plate left and right side avoid the generation of unqualified material in abnormal pull-up, curling skew etc. during reverse rolling process, problems such as reverse rolling scraping edge, curling loose, pleating etc.

Description

Technical Field

[0001] This utility model relates to the field of tire extrusion machine technology, specifically a pre-drilling device for left and right tire sidewalls of a composite extrusion of three types of rubber materials. Background Technology

[0002] Current all-steel tire extrusion machines primarily use single-strip (requiring backwinding) or double-strip extrusion methods for tire sidewall extrusion. Due to the significant variation in the width design of all-steel tire sidewalls (ranging from a minimum of 160mm to a maximum of 400mm), traditional extruders are mainly designed for single-strip extrusion. After extrusion, the sidewalls are rolled back from right to left. However, this backwinding process does not create value, wasting equipment energy and manpower. Furthermore, the quality of the sidewall roll during backwinding cannot be well guaranteed. Therefore, the ability to distinguish left and right directions on the production line without backwinding is crucial. From a quality perspective, extruding the left and right sides of the same tire separately avoids potential quality issues during the rewinding process and improves production efficiency. There are three reasons for this: 1. Using the same board on both sides of the tire avoids the generation of substandard materials such as abnormal stretching, curling and skew during the rolling process; 2. The left and right sides of the same board are easy to operate, avoiding the unnecessary production time added due to rewinding; 3. The personnel job structure has been reasonably optimized, providing a basis for optimizing job positions.

[0003] Currently, all-steel tire sidewall extrusion mainly involves extrusion from one side, i.e., the right sidewall. After extrusion, the sidewall is cooled and shrunk on the production line before entering the coiling station, where it is coiled into the right-hand sidewall required for the molding process. Then, depending on the quantity, the right sidewall is re-coiled into the left sidewall so that the left and right sidewalls can be fed separately during the molding process. During the re-coiling process, problems such as edge scraping, loose coiling, and wrinkling often occur, affecting both product quality and efficiency.

[0004] Now, a novel pre-drilling device for the left and right sides of tires, which involves the composite extrusion of three rubber compounds, is proposed to address the aforementioned shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide a pre-form device for the left and right sides of a tire sidewall that is a composite extrusion of three rubber compounds, in order to solve the problems that often occur during the rewinding process of the single-strip extrusion method mentioned in the background art, such as edge scraping, loose curling, and wrinkling.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pre-die device for left and right tire sidewalls of a composite extrusion of three rubber compounds, comprising a die plate body one, a die plate body two, a left pre-die, and a right pre-die. The top of the mouth-shaped plate body one is provided with the mouth-shaped plate body two. Extrusion ports are respectively opened on both sides of the mouth-shaped plate body one and the mouth-shaped plate body two. Mounting holes are respectively opened on both sides of the top of the mouth-shaped plate body two, and mounting bolts are provided inside the mounting holes. Threaded inner holes are respectively opened on both sides of the top of the mouth-shaped plate body one. The left pre-cutting front end has a front material inlet, the left pre-cutting rear end has a rear material inlet, and the left pre-cutting front end has a reserved hole on each of its two sides. The right pre-cutting front end has a second front material inlet, the right pre-cutting rear end has a second rear material inlet, and the right pre-cutting front end has two reserved holes on each side.

[0007] As a further technical solution of this utility model, the extrusion port penetrates the interior of the first and second mouth plate bodies respectively.

[0008] As a further technical solution of this utility model, the mounting hole penetrates the interior of the main body of the orifice plate, and the bottom end of the mounting bolt penetrates the interior of the mounting hole and is threadedly rotatably connected in the threaded inner hole.

[0009] As a further technical solution of this utility model, the mounting bolts are symmetrically arranged about the vertical center lines of the mouth-shaped plate body one and the mouth-shaped plate body two.

[0010] As a further technical solution of this utility model, the rear feed port is internally connected to the front feed port.

[0011] As a further technical solution of this utility model, the rear feed port 2 is internally connected to the front feed port 2.

[0012] As a further technical solution of this utility model, the reserved hole penetrates the interior of the left pre-cut.

[0013] As a further technical solution of this utility model, the reserved hole two penetrates the interior of the right pre-cut.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the pre-drilling device for the left and right tire sides of the three rubber compound extrusion not only avoids the generation of unqualified materials such as abnormal stretching and curling deviation during the rewinding process, but also facilitates the operation of the left and right tire sides on the same plate, and optimizes the personnel job structure. (1) By setting up a die plate main body one, die plate main body two, extrusion port, left pre die, right pre die, front material port one, front material port two, rear material port one and rear material port two, the pre die device achieves centering design at the three glue inlet positions on the back. At the same time, the left pre die and the right pre die are mirrored. After the right tire side is produced, the left tire side of the same die is extruded by changing the die and switching the pre die. This effectively solves the problem of needing to rewind after the tire side is curled, improves production efficiency, and avoids the generation of unqualified materials such as abnormal stretching and curling deviation during the rewinding process on the left and right tire sides of the same plate. (2) By setting up a die plate main body one, die plate main body two, extrusion port, left pre die, right pre die, front material port one, front material port two, rear material port one and rear material port two, the left tire side can be directly extruded, avoiding the stretching, loosening of curling tension and pleating during the component rewinding process, eliminating intermediate links, improving tire side curling quality, improving production efficiency, and the left and right tire sides of the same plate are easy to operate in operation, avoiding the unnecessary production time added due to rewinding; (3) By setting up a mouth plate main body one, a mouth plate main body two, an extrusion port, a left pre-mouth, a right pre-mouth, a front material port one, a front material port two, a rear material port one and a rear material port two, compound extrusion avoids the stretching, curling tension loosening and pleating of the parts during the back-rolling process, eliminates intermediate links, and reasonably optimizes the personnel job structure, providing a basis for the optimization of job personnel. Attached Figure Description

[0015] Figure 1 This is a frontal cross-sectional view of the present invention. Figure 2 This is a schematic diagram of a partial cross-sectional view of the left pre-cut of this utility model. Figure 3 This is a schematic diagram of a partial cross-sectional view of the right pre-cut of this utility model. Figure 4 This is a schematic diagram of the left pre-mouth structure of this utility model from the rear view. Figure 5 This is a schematic diagram of the rear view of the right pre-mouth structure of this utility model; Figure 6 This is a schematic diagram of a partial sectional view of the left pre-cut section of this utility model. Figure 7 This is a partial sectional view of the right pre-cut section of this utility model. Figure 8 This is a partial cross-sectional view of the main body of the mouth-shaped plate of this utility model.

[0016] In the diagram: 1. Main body of the die plate 1; 2. Main body of the die plate 2; 3. Extrusion port; 4. Left pre-die; 5. Reserved hole 1; 6. Front feed port 1; 7. Right pre-die; 8. Reserved hole 2; 9. Front feed port 2; 10. Rear feed port 1; 11. Rear feed port 2; 12. Mounting bolt; 13. Mounting hole; 14. Threaded inner hole. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-4 This utility model provides an embodiment: a pre-drilling device for left and right tire sidewalls of a composite extrusion of three rubber compounds, including a die plate body 1, a die plate body 2, a left pre-drilling 4 and a right pre-drilling 7; The top of the mouth-shaped plate body 1 is provided with the mouth-shaped plate body 2. The two sides of the mouth-shaped plate body 1 and the mouth-shaped plate body 2 are respectively provided with extrusion ports 3. The two sides of the top of the mouth-shaped plate body 2 are respectively provided with mounting holes 13, and mounting bolts 12 are provided inside the mounting holes 13. The two sides of the top of the mouth-shaped plate body 1 are respectively provided with threaded inner holes 14. The extrusion ports 3 penetrate the interior of the mouth-shaped plate body 1 and the mouth-shaped plate body 2. The mounting holes 13 penetrate the interior of the mouth-shaped plate body 2. The bottom end of the mounting bolt 12 penetrates the interior of the mounting hole 13 and is threadedly connected to the threaded inner hole 14. The mounting bolts 12 are symmetrically arranged about the vertical center lines of the mouth-shaped plate body 1 and the mouth-shaped plate body 2. The left pre-mouth type 4 has a front material inlet 6 inside the front left side, and a rear material inlet 10 inside the rear end of the left pre-mouth type 4. The left pre-mouth type 4 has reserved holes 5 inside the front two sides respectively. The rear material inlet 10 is connected to the interior of the front material inlet 6, and the reserved hole 5 penetrates the interior of the left pre-mouth type 4. The right pre-mouth type 7 has a front material port 2 9 inside the front right side, and a rear material port 2 11 inside the rear end of the right pre-mouth type 7. The right pre-mouth type 7 has reserved holes 2 8 inside the front two sides respectively. The rear material port 2 11 is connected to the interior of the front material port 2 9, and the reserved hole 2 8 penetrates the interior of the right pre-mouth type 7. Specifically, such as Figures 1-8As shown, a pre-drilling device for left and right tire sidewalls is provided, which is suitable for compound extrusion of three types of rubber compounds. The pre-drilling device is designed to be centered at the three rubber inlets on the back. At the same time, the left pre-drilling 4 and the right pre-drilling 7 are mirror images. After the right tire sidewall is produced, the left tire sidewall of the same die is extruded by changing the die face and switching the pre-drilling. This effectively solves the problem of needing to rewind after the tire sidewall is curled, improves production efficiency, and avoids the generation of unqualified materials such as abnormal stretching and curling deviation during the rewinding process of the left and right tire sides of the same plate.

[0019] This die-cutting device, suitable for extruding both left and right tire sidewalls, uses a design that allows for both forward and reverse entry points on the same die. Based on theoretical design and experimental results, it effectively eliminates the right tire sidewall rewinding process, achieving the goal of extruding the right tire sidewall from the same die and eliminating rewinding. This method significantly improves component quality, reduces quality issues during the rewinding process, improves tire sidewall curling quality, and reduces curling problems during the molding process of the rewinded tire sidewall.

[0020] Working principle: When using this utility model, after the right tire side is produced, the left tire side can be directly extruded by changing the die shape and switching between the left pre-die 4 and the right pre-die 7, avoiding the stretching, loosening of the curling tension and pleating during the component rewinding process, and eliminating intermediate steps.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pre-die device for left and right tire sidewalls of a compound extrusion of three rubber compounds, comprising die plate body one (1), die plate body two (2), left pre-die (4) and right pre-die (7), characterized in that ； The top of the mouth plate body one (1) is provided with the mouth plate body two (2). The mouth plate body one (1) and the mouth plate body two (2) are respectively provided with extrusion ports (3) on both sides of the two ends. The mouth plate body two (2) is respectively provided with mounting holes (13) on both sides of the top end. The mounting holes (13) are provided with mounting bolts (12). The mouth plate body one (1) is respectively provided with threaded inner holes (14) on both sides of the top end. The left pre-mouth (4) has a front material inlet (6) on the left side of the front end, a rear material inlet (10) on the rear end of the left pre-mouth (4), and reserved holes (5) on both sides of the front end of the left pre-mouth (4). The right pre-mouth (7) has a front material port 2 (9) inside the front right side, the right pre-mouth (7) has a rear material port 2 (11) inside the rear end, and the right pre-mouth (7) has reserved holes 2 (8) inside the front sides respectively.

2. The pre-drilling device for left and right tire sidewalls of a composite extrusion of three rubber compounds according to claim 1, characterized in that: The extrusion port (3) penetrates the interior of the first mouth plate body (1) and the second mouth plate body (2), respectively.

3. The pre-drilling device for left and right tire sidewalls of a compound extrusion of three rubber compounds according to claim 1, characterized in that: The mounting hole (13) penetrates the interior of the main body of the orifice plate (2), and the bottom end of the mounting bolt (12) penetrates the interior of the mounting hole (13) and is threadedly connected to the threaded inner hole (14).

4. The pre-drilling device for left and right tire sidewalls of a composite extrusion of three rubber compounds according to claim 1, characterized in that: The mounting bolts (12) are symmetrically arranged about the vertical center lines of the mouth plate body one (1) and mouth plate body two (2).

5. The pre-drilling device for left and right tire sidewalls of a compound extrusion of three rubber compounds according to claim 1, characterized in that: The rear feed port (10) is internally connected to the front feed port (6).

6. The pre-drilling device for left and right tire sidewalls of a composite extrusion of three rubber compounds according to claim 1, characterized in that: The rear feed port 2 (11) is internally connected to the front feed port 2 (9).

7. The pre-drilling device for left and right tire sidewalls of a composite extrusion of three rubber compounds according to claim 1, characterized in that: The reserved hole (5) penetrates the interior of the left pre-cut (4).

8. The pre-drilling device for left and right tire sidewalls of a compound extrusion of three rubber compounds according to claim 1, characterized in that: The reserved hole 2 (8) penetrates the interior of the right pre-cut (7).

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