Large-diameter, narrow-diameter, flat-width forming device

Abstract

This utility model relates to a large-diameter, narrow-width, flat-top forming device, belonging to the field of tire forming equipment. It includes a forming machine main shaft, on which a forming drum is mounted. One end of the forming drum is connected to a tailstock bushing. A main shaft positioning keyway is provided from the middle to the front end of the main shaft and tailstock bushing. Positioning keys are installed and positioned to the inner sleeve of the side drum. A side drum bead support block is provided at the front end of the side drum. Forming drum shoulders are provided on both sides of the forming drum. The tire bead is positioned by the forming drum shoulders and the side drum bead support block. An annular groove is machined circumferentially on the inner wall of the front end of the side drum inner sleeve. The distance between the contact position of the positioning key at the front end of the side drum bead support block and the annular groove and the center of the main drum is the positioning distance of the side drum inner sleeve. The positioning distance of the inner sleeve of a single side drum is 350-1050mm. The positioning key adopts an L-shaped design and has fixing screw holes at different positions within the main shaft positioning keyway. Positioning screws pass through these fixing screw holes to fix the positioning key.

Description

Technical Field

[0001] This utility model relates to the field of tire production equipment, and more specifically to a large-inch, narrow-width, flat-formation device. Background Technology

[0002] As is well known, in the tire manufacturing industry, tire forming machines are a key production piece of equipment. With increasing usage time, their original design functions can no longer meet the changing process design requirements of the market. This is especially true for engineering radial tire forming machines, which have a wide range of production sizes. The original smaller-version forming machines were designed to only meet the production needs of 25-29 inch tires with a flat width of 1000-1600mm. To meet changing market demands, while maintaining relatively minor changes to the original tire design, the load-bearing capacity has been doubled to improve transportation efficiency and reduce carbon emissions. Smaller sizes such as 14.00R25 and 16.00R25 are gradually being replaced by 29-inch narrower flat tires with a flat width of 850-1600mm, such as 480 / 95R29, 505 / 95R29, and 525 / 95R29. To meet the process design requirements of a 29-inch tire with a narrow width of <1000mm, the original forming machine's front and back wrapping devices need to be adjusted. However, due to the limitations of the side drum and the main shaft positioning key, the bead support positioning position deviates significantly from the forming drum shoulder position. The tire carcass after the bead and the forming drum shoulder position are properly wrapped cannot make close contact, resulting in poor bead positioning accuracy, loose contact between the bead and the carcass, air bubbles, and unsuitable width and flatness, among other quality problems. During use, this leads to quality accidents such as early tire detachment, bead gaps, and tire blowouts due to insufficient strength. The traditional design cannot meet the production requirements of a width and flatness of <1000mm. Summary of the Invention

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a large-inch, narrow-width forming device, which improves the inner bushing of the existing side drum to ensure that the distance between the tire bead supported by the front and back wrapping device, especially the side drum tire bead support block device, and the position of the forming drum shoulder is adjusted to the standard distance.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a large-inch narrow-flat-wide forming device, which is provided with a forming machine main shaft and a forming drum installed on the forming machine main shaft. The feature is that the other end of the forming drum is connected to the tailstock bushing. The forming machine main shaft and the tailstock bushing are provided with a main shaft positioning keyway from the middle to the front end. Positioning keys are installed and positioned and connected to the inner sleeve of the side drum. The front end of the side drum is provided with a side drum bead support block. The two sides of the forming drum are provided with forming drum shoulders. The bead is positioned by the forming drum shoulders and the side drum bead support block. The inner wall of the front end of the inner sleeve of the side drum is machined with an annular groove along the circumferential direction.

[0005] The distance between the contact position of the front positioning key of the side drum bead support block and the annular groove and the center of the main drum is the positioning distance of the inner sleeve of the side drum. The positioning distance of the inner sleeve of the side drum on one side is 350-1050mm, that is, the flat width can meet the process conditions of 700-2100mm.

[0006] The positioning key adopts an L-shaped design and has fixing screw holes at different positions in the main spindle positioning keyway. The positioning screw passes through the fixing screw holes to fix the positioning key.

[0007] The beneficial effect of this utility model is that by changing the relative distance of the annular groove structure processed at the front end of the side drum inner sleeve and adjusting the position of the positive and negative wrapping device, the process standard position of the side drum bead support block device is achieved. At the same time, the side drum is limited by positioning the L-shaped positioning key with the side drum inner sleeve, so that the position of the side drum bead support block and the position of the formed drum shoulder meet the process standard. Attached Figure Description

[0008] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0009] Figure 1 A schematic diagram of the non-support ring state structure of this utility model.

[0010] Figure 2 This is a schematic diagram of the support ring of this utility model.

[0011] Figure 3 A schematic diagram of the side drum state of this utility model.

[0012] Figure 4 A partially enlarged schematic diagram of the side drum support ring of this utility model.

[0013] In the figure: 1. Main shaft of molding machine, 2. Molding drum, 3. Tailstock bushing, 4. Main shaft positioning keyway, 5. Positioning key, 6. Side drum, 7. Side drum inner sleeve, 8. Side drum bead support block, 9. Molding drum shoulder, 10. Annular groove, T1. Bead, X1. Positioning distance of side drum inner sleeve. Detailed Implementation

[0014] In the figure, this utility model includes a molding machine main shaft 1, on which a molding drum 2 is mounted. The other end of the molding drum 2 is connected to a tailstock bushing 3. A main shaft positioning keyway 4 is provided between the middle and front end of the molding machine main shaft 1 and the tailstock bushing 3. Positioning keys 5 are respectively installed and positioned to connect with the inner sleeve 7 of the side drum 6. A side drum bead support block 8 is provided at the front end of the side drum 6. Molding drum shoulders 9 are provided on both sides of the molding drum 2. The bead T1 is formed by wrapping the tire body in both directions through the positioning of the molding drum shoulders 9 and the side drum bead support blocks 8. The inner sleeve 7 of the side drum... The inner wall of the front end is machined with an annular groove 10 along the circumference. The distance between the contact position of the front positioning key 5 of the side drum bead support block 8 and the annular groove 10 and the center of the main drum is the side drum inner sleeve positioning distance X1. The positioning distance X1 of the inner sleeve of the side drum on one side is 350-1050mm, that is, the flat width can meet the process conditions of 700-2100mm, so as to achieve a minimum flat width of less than 850mm for the forming drum 2, meet the process standards of the new product, ensure the accuracy of the bead support bead locking position, and prevent the bead from slipping. This solves the problem that the bead and the tire body cannot make close contact after the bead and the forming drum shoulder are properly wrapped, resulting in poor bead positioning accuracy, loose contact between the bead and the tire body, air bubbles, and unsuitable flat width and other quality problems. During use, this can cause quality accidents such as early tire detachment, bead gaps, and tire blowouts due to insufficient strength.

[0015] The positioning key 5 adopts an L-shaped design and has fixing screw holes at different positions in the main shaft positioning keyway 4. The positioning screw passes through the screw holes to fix the positioning key 4 according to different widths, ensuring that the L-shaped positioning key 4 is positioned with the inner sleeve 7 of the side drum while limiting the side drum 6, so as to achieve the distance between the position of the side drum bead support block 8 and the position of the forming drum shoulder 9 meets the process standard.

Claims

1. A large-aperture, narrow-aperture, flat-width forming device, comprising a forming machine spindle, on which a forming drum is mounted, characterized in that, The other end of the forming drum is connected to the tailstock bushing. The main shaft of the forming machine and the tailstock bushing are provided with a main shaft positioning keyway from the middle to the front end. Positioning keys are installed and positioned to connect with the inner sleeve of the side drum. The front end of the side drum is provided with a side drum bead support block. The two sides of the forming drum are provided with forming drum shoulders. The bead is positioned by the forming drum shoulders and the side drum bead support blocks. The inner wall of the front end of the inner sleeve of the side drum is machined with an annular groove along the circumference.

2. The large-inch, narrow-aperture, flat-width forming device according to claim 1, characterized in that... The distance between the contact position of the front end positioning key of the side drum bead support block and the annular groove and the center of the main drum is the positioning distance of the inner sleeve of the side drum. The positioning distance of the inner sleeve of the side drum on one side is 350-1050mm.

3. The large-inch, narrow-aperture, flat-width forming device according to claim 1, characterized in that... The positioning key adopts an L-shaped design and has fixing screw holes at different positions in the main spindle positioning keyway. The positioning screw passes through the fixing screw holes to fix the positioning key.

Images