Two composite tire sidewall pressing and exporting device

Abstract

The present invention relates to a two-composite tire sidewall extrusion die device, belonging to the field of tire production and vulcanization. There is a die box, with a pre-die installed inside the die box and an outer die plate installed outside. It is characterized in that the pre-die is of an integral structure, and the two upper rubber outlets and the two lower rubber outlets of the pre-die are arranged axially symmetrically. An outer die plate is provided at the outer outlets of the upper rubber outlet and the lower rubber outlet of the pre-die. The outer die plate includes an upper outer die plate and a lower outer die plate connected by bolts. The present invention does not require adding a new tire sidewall pre-die. For tires produced by the same molding method, there is no need to replace the pre-die. Only by replacing the outer die plate, it is possible to produce tire sidewall rubber components with different overlapping widths of all tire sidewall rubbers and bead rubbers, different widths and thicknesses of tire sidewalls, and different widths and thicknesses of beads, saving the tooling cost of tire sidewall pre-dies for tire enterprises.

Description

Technical Field

[0001] The present invention relates to the field of tire production devices, and more specifically, to a two-composite tire sidewall extrusion die device with a controllable lap width of the sidewall rubber and the bead rubber. Background Art

[0002] As is well known, currently, there are more and more models of passenger car tire products, and their uses are also becoming more and more extensive. In order to meet the different performance requirements of passenger car tires such as handling, durability, and high speed, it is necessary to design different lap widths for the sidewall rubber and the bead rubber of the sidewall rubber component. According to the traditional oblique lap method of the sidewall rubber and the bead rubber, once the thickness of the pre-die and the sidewall semi-finished product is determined, the lap width is determined. Therefore, usually in the tire production process, in order to meet the requirements of different lap widths of the sidewall rubber and the bead rubber, it is necessary to process multiple sidewall pre-dies. Therefore, tire production enterprises will increase significant tooling costs due to the large number of pre-dies. At the same time, since the processing cycle of the pre-die is relatively long, it affects the development progress of new products and extends the new product development cycle. At the same time, due to the large number of sidewall pre-dies, the frequency of pre-die replacement during the tire production process will increase, reducing production efficiency. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a two-composite tire sidewall extrusion die device, aiming to solve the problem that in the sidewall extrusion process during tire production in domestic tire enterprises, due to different lap widths of the sidewall rubber and the bead rubber, multiple sidewall pre-dies are required to produce sidewalls of different specifications and models to meet the performance requirements of different products, resulting in an increase in the tooling cost of the pre-die and restricting the development progress of new products of tire enterprises. The present invention provides a two-composite tire sidewall extrusion die device with a controllable lap width of the sidewall rubber and the bead rubber. For tires produced by one molding method, without replacing the pre-die, only by replacing the outer die plate, it is possible to extrude sidewall rubber components with different lap widths of the sidewall and the bead, different widths and thicknesses of the sidewall rubber, and different widths and thicknesses of the bead rubber.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a two-composite tire sidewall extrusion die device is provided with a die box. A pre-die is installed inside the die box, and an outer die plate is installed outside. Its characteristics are that the pre-die is of an integral structure, and the two upper rubber outlets and the two lower rubber outlets of the pre-die are arranged axially symmetrically. An outer die plate is provided at the outer outlets of the upper rubber outlet and the lower rubber outlet of the pre-die. The outer die plate includes an upper outer die plate and a lower outer die plate connected by bolts.

[0005] The two pairs of upper pre-orifice glue outlets and lower pre-orifice glue outlets that are axially symmetric on the pre-orifice are all rectangular. The upper pre-orifice glue outlets and lower pre-orifice glue outlets on the same side are arranged in parallel. The length of the upper pre-orifice glue outlet is 300 mm - 400 mm, and the width is 15 mm - 25 mm. The length of the lower pre-orifice glue outlet is 200 mm - 300 mm, and the width is 10 mm - 20 mm. And there is an overlapping width of 60 mm - 100 mm between the upper pre-orifice glue outlet and the lower pre-orifice glue outlet on the same side.

[0006] The upper outer-orifice plate and the lower outer-orifice plate of the described outer-orifice plate are each processed with an upper outer-orifice plate glue outlet and a lower outer-orifice plate glue outlet, corresponding to the upper pre-orifice glue outlet and the lower pre-orifice glue outlet of the pre-orifice respectively. The upper outer-orifice plate glue outlet and the lower outer-orifice plate glue outlet have a certain length overlap, and the two glue outlets form a large glue outlet.

[0007] The beneficial effect of the present invention is that in order to meet the different performance requirements of passenger car tires for handling, durability, high speed, etc., for products with different uses, the sidewall rubber and the bead rubber need different overlapping widths. The present invention does not need to add a new sidewall pre-orifice. For tires produced by the same molding method, there is no need to replace the pre-orifice. Only by replacing the outer-orifice plate, it is possible to produce sidewall rubber components with different overlapping widths of sidewall rubber and bead rubber, different widths and thicknesses of sidewalls, and different widths and thicknesses of beads, saving the tooling cost of sidewall pre-orifices for tire enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a front structural schematic diagram of the orifice box of the present invention.

[0009] Figure 2 is a central sectional structural schematic diagram of the orifice box of the present invention.

[0010] Figure 3 is a sectional structural schematic diagram of a dual sidewall in one-step molding.

[0011] Figure 4 is a front structural schematic diagram of the outer-orifice plate in one-step molding.

[0012] Figure 5 is a back structural schematic diagram of the outer-orifice plate in one-step molding.

[0013] Figure 6 is a front structural schematic diagram of the upper outer-orifice plate in one-step molding.

[0014] Figure 7 is a front structural schematic diagram of the lower outer-orifice plate in one-step molding.

[0015] Figure 8 is a front structural schematic diagram of the pre-orifice in one-step molding.

[0016] Figure 9 It is a schematic diagram of the back structure of the primary forming pre-profile.

[0017] Figure 10 It is a schematic diagram of the cross-sectional structure of the twin sidewalls in the secondary forming method.

[0018] Figure 11 It is a schematic diagram of the front structure of the outer profile plate in the secondary forming method.

[0019] Figure 12 It is a schematic diagram of the back structure of the outer profile plate in the secondary forming method.

[0020] Figure 13 It is a schematic diagram of the front structure of the pre-profile in the secondary forming method.

[0021] Figure 14 It is a schematic diagram of the back structure of the pre-profile in the secondary forming method.

[0022] In the figure: 1. Profile box, 2. Upper outer profile plate, 3. Lower outer profile plate, 4. Glue outlet of the upper outer profile plate, 5. Glue outlet of the lower outer profile plate, 6. Pre-profile, 7. Upper glue outlet of the pre-profile, 8. Lower glue outlet of the pre-profile, 9. Upper outer profile plate, 10. Lower outer profile plate, 11. Glue outlet of the upper outer profile plate, 12. Glue outlet of the lower outer profile plate, 13. Pre-profile, 14. Upper glue outlet of the pre-profile, 15. Lower glue outlet of the pre-profile, A1. Lap width between the sidewall and the bead of the sidewall rubber component formed by the primary method, A2. Lap width between the openings of the upper and lower outer profile plates of the sidewall formed by the primary method, A3. Lap width between the upper and lower glue outlets of the pre-profile formed by the primary method, B1. Lap width between the sidewall and the bead of the sidewall rubber component formed by the secondary method, B2. Lap width between the openings of the upper and lower outer profile plates of the sidewall formed by the secondary method, B3. Lap width between the upper and lower glue outlets of the pre-profile formed by the secondary method. Specific embodiments

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Such as Figure 1 、 2As shown in Figures 3, 4, 5, 6, 7, 8, 9, the present invention is provided with a mouth-shaped box 1, and a pre-mouth-shaped part 6 is installed inside the mouth-shaped box 1. The pre-mouth-shaped part 6 is of an integral structure. Two pairs of glue outlets, namely a pre-mouth-shaped upper glue outlet 7 and a pre-mouth-shaped lower glue outlet 8, which are axisymmetric, are processed on the pre-mouth-shaped part 6. The two glue outlets, the pre-mouth-shaped upper glue outlet 7 and the pre-mouth-shaped lower glue outlet 8 on the same side of the pre-mouth-shaped part 6, are rectangular and arranged in parallel. The length of a single pre-mouth-shaped upper glue outlet 7 of the pre-mouth-shaped part 6 is 300 mm - 400 mm, and the width is 15 mm - 25 mm. The length of a single pre-mouth-shaped lower glue outlet 8 is 200 mm - 300 mm, and the width is 10 mm - 20 mm. Moreover, there is an overlapping width of 60 mm - 100 mm between the pre-mouth-shaped upper glue outlet 7 and the pre-mouth-shaped lower glue outlet 8 on the same side of the pre-mouth-shaped part 6. At the outer outlets of the pre-mouth-shaped upper glue outlet 7 and the pre-mouth-shaped lower glue outlet 8 of the pre-mouth-shaped part 6, there is an outer mouth-shaped plate, which includes an outer mouth-shaped upper plate 2 and an outer mouth-shaped lower plate 3 connected by bolts. Each of the outer mouth-shaped upper plate 2 and the outer mouth-shaped lower plate 3 is provided with two glue outlets, namely an outer mouth-shaped upper plate glue outlet 4 and an outer mouth-shaped lower plate glue outlet 5. Corresponding to the pre-mouth-shaped upper glue outlet 7 and the pre-mouth-shaped lower glue outlet 8, the outer mouth-shaped upper plate glue outlet 4 and the outer mouth-shaped lower plate glue outlet 5 have a certain length of overlap, and the two glue outlets form a large glue outlet.

[0025] As shown in Figure 8 When the sidewall rubber flows through the pre-mouth-shaped upper glue outlet 7 of the pre-mouth-shaped part 6 and reaches the outer mouth-shaped upper plate glue outlet 4 of the outer mouth-shaped upper plate 2, and the bead rubber flows through the pre-mouth-shaped lower glue outlet 8 of the pre-mouth-shaped part 6 and reaches the outer mouth-shaped lower plate glue outlet 5 of the outer mouth-shaped lower plate 3. After the sidewall rubber and the bead rubber converge inside the outer mouth-shaped lower plate glue outlet 5 and the outer mouth-shaped upper plate glue outlet 4 of the outer mouth-shaped plate, they flow together through the large glue outlet formed by the overlap of the outer mouth-shaped upper plate glue outlet 4 and the outer mouth-shaped lower plate glue outlet 5, thus completing the extrusion of the sidewall rubber component.

[0026] According to different tire forming methods, it can be divided into one-step forming and two-step forming. For different forming methods, sidewall rubber components of different shapes are required. The schematic diagram of the sidewall cross-section structure for one-step forming is as shown in Figure 3 When shown, the bead rubber is on the inner side and the sidewall rubber is on the outer side, and all sidewalls can share one pre-mouth-shaped part; the schematic diagram of the sidewall cross-section structure for two-step forming is as shown in Figure 10 When shown, the bead rubber is on the outer side and the sidewall rubber is on the inner side, and all sidewalls can share one pre-mouth-shaped part. Two pre-mouth-shaped parts can meet the extrusion of all sidewall rubber components.

[0027] Figure 4 The outer mouth-shaped plate shown in Figure 6 is decomposed into the one-step outer mouth-shaped upper plate 2 of Figure 7 and the one-step outer mouth-shaped lower plate 3 of Figure 6The two notches with dotted lines shown are the glue outlets 4 of the primary external profile upper plate 2 of the primary method, corresponding to the two primary external profile upper glue outlets 7 of the primary pre-profile plate 6, that is, the sidewall rubber glue outlets. Figure 7 The two notches with dotted lines shown in are the glue outlets 5 of the primary external profile lower plate 3 of the primary method, corresponding to the two primary external profile lower glue outlets 8 of the pre-profile 6, that is, the glue outlets of the bead filler rubber.

[0028] Figure 3 The sidewall rubber component shown, where A1 is the overlap width of the sidewall rubber and the bead filler rubber. Once the sidewall design dimensions are determined, A1 is determined. Based on the overlap width A1 and the shrinkage coefficient of the rubber compound, the overlap width of the upper and lower openings of the external profile plate and the dimensions of the upper and lower openings of the external profile plate can be calculated. Thus Figure 4 the overlap width A2 of the upper and lower openings of the external profile plate in can be determined, and the profiling processing of the external profile plate can be completed based on the above data. For the sidewall rubber components commonly used by tire enterprises, Figure 8 the overlap width A3 between the primary external profile upper glue outlet 7 and the primary external profile lower glue outlet 8 of the primary pre-profile 6 in is 60mm - 100mm, which can meet the production requirements of all sidewalls.

[0029] If producing Figure 3 the sidewall of the structure shown, then the primary external profile plate shown in Figure 4 and the primary pre-profile 6 shown in Figure 8 are required. The sidewall rubber flows through the primary external profile upper glue outlet 7 of the primary pre-profile 6 and reaches the glue outlet 4 of the primary external profile upper plate 2 of the primary method. The bead filler rubber flows through the primary external profile lower glue outlet 8 of the primary pre-profile 6 and reaches the glue outlet 5 of the primary external profile lower plate 3 of the primary method. The sidewall rubber and the bead filler rubber converge inside the combined opening of the glue outlet 4 of the external profile upper plate 2 of the primary method and the glue outlet 5 of the external profile lower plate 3 of the primary method of the primary method, and together flow through the glue outlet of the external profile plate to jointly complete Figure 3 the extrusion of the sidewall of the structure shown.

[0030] If producing Figure 10 the sidewall of the structure shown, then the secondary external profile plates shown in Figure 11 and 12 are required, and Figure 13 and 14The secondary pre-die lip 13 shown. The sidewall rubber flows through the upper rubber outlet 14 of the secondary pre-die lip of the secondary pre-die lip 13 to the upper rubber outlet 11 of the secondary outer die lip upper plate 9 of the secondary outer die lip. The corner rubber flows through the lower rubber outlet 15 of the secondary pre-die lip of the secondary pre-die lip 13 to the lower rubber outlet 12 of the secondary outer die lip lower plate 10 of the secondary outer die lip. The sidewall rubber and the corner rubber converge inside the upper rubber outlet 11 of the secondary outer die lip upper plate 9 of the outer die lip upper plate and the lower rubber outlet 12 of the secondary outer die lip lower plate 10 of the outer die lip lower plate, and together flow through the rubber outlet of the outer die lip plate to jointly complete Figure 10 the sidewall extrusion of the structure shown.

Claims

1. A two-composite tire side extrusion die device is provided with a die box. A pre-die is installed inside the die box, and an outer die plate is installed outside. Its characteristics are that, The pre-orifice is of an integral structure. The two upper glue outlets and the two lower glue outlets of the pre-orifice are arranged axially symmetrically. An outer orifice plate is provided at the outer outlets of the upper glue outlet and the lower glue outlet of the pre-orifice. The outer orifice plate includes an upper outer orifice plate and a lower outer orifice plate connected by bolts; the two pairs of upper glue outlets and lower glue outlets of the pre-orifice that are axially symmetric on the pre-orifice are all rectangular. The upper glue outlets and the lower glue outlets on the same side are arranged in parallel. The length of the upper glue outlet of the pre-orifice is 300 mm - 400 mm, and the width is 15 mm - 25 mm. The length of the lower glue outlet of the pre-orifice is 200 mm - 300 mm, and the width is 10 mm - 20 mm. And there is an overlapping width of 60 mm - 100 mm between the upper glue outlet and the lower glue outlet on the same side of the pre-orifice; the upper outer orifice plate and the lower outer orifice plate of the outer orifice plate are each processed with an upper outer orifice plate glue outlet and a lower outer orifice plate glue outlet, corresponding to the upper glue outlet and the lower glue outlet of the pre-orifice respectively. The upper outer orifice plate glue outlet and the lower outer orifice plate glue outlet have a certain length overlap, and the two glue outlets form a large glue outlet.

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