On-line cooling device for molding roller of winding adhesive tape extruder

Abstract

The utility model relates to an on-line cooling device for a winding rubber strip extruder type roller, and belongs to the field of tire production equipment. Hollow transmission shafts are installed on the two sets of forming roller supporting stand columns respectively, forming rollers and flat rollers are installed at the front ends of the two sets of forming roller supporting stand columns respectively, the forming rollers and the flat rollers are the same in internal structure and are of hollow cooling cavity structures, and cooling water rotating joints are installed at the tail ends of the hollow transmission shafts and connected with cooling water inlet pipes. Cooling water enters a cooling water inlet pipe through a cooling water inlet and is blocked through an inner gland with a seal and an outer gland with a seal when reaching the front end, a water inlet cavity is formed, the cooling water flows through the water inlet cavity and enters a cooling cavity through a forming roller water inlet hole to cool a forming roller, and return water in the cooling cavity passes through a forming roller water outlet hole to cool the forming roller. Return water passes through a cooling water return cavity formed by the middle of the hollow transmission shaft and the cooling water inlet pipe.

Description

Technical Field

[0001] The utility model relates to the field of tire production equipment, and more specifically, to an on-line cooling device for a forming roller of a winding rubber strip extruder. Background Art

[0002] As is well known, in the process of tire production and manufacturing, the tread winding process of engineering meridian tires is an important process for the production of the carcass tread of large engineering meridian tires, which directly restricts the performance of tire products. In the traditional process, the rubber strip extruded by the cold feed extruder is plastified by the extruder and the extrusion section relies on the shearing of pins and screws to cause the temperature of the rubber compound to rise very high during extrusion in the barrel and the head. The high-temperature rubber strip is then subjected to secondary extrusion and profiling by the forming roller. If it cannot be cooled in time, when continuously working for extrusion and profiling, the rubber strip will heat up again, resulting in over-sulfur scorching, which directly affects the wear resistance of the tread pattern. If we want to solve the problem of early over-sulfur scorching of the rubber strip, reduce the temperature of the rubber strip, and eliminate the hidden danger of early over-sulfur scorching, we need to reduce the production speed, which seriously affects the production efficiency. And if we do not reduce the production speed, it will have a great impact on the wear resistance of the tire tread pattern, and there are great potential quality risks. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides an on-line cooling device for a forming roller of a winding rubber strip extruder, which can ensure that the rubber compound is cooled early during profiling, reduce the temperature of the rubber strip, eliminate the hidden dangers of early over-sulfur and scorching, and improve the production efficiency and the wear resistance of the tread pattern.

[0004] The technical solution adopted by the utility model to solve its technical problems is: an on-line cooling device for a forming roller of a winding rubber strip extruder, which is provided with a forming roller support seat. Two sets of forming roller support columns are installed at the middle position of the forming roller support seat. Two sets of concentric through holes are respectively provided on the two sets of forming roller support columns, and support rotating bearings are installed. The feature is that hollow transmission shafts are respectively installed through the two sets of support rotating bearings, and a forming roller and a flat roller are respectively installed at the front ends of the two sets of hollow transmission shafts. The internal structures of the forming roller and the flat roller are exactly the same. The forming roller and the flat roller are designed as hollow cooling cavity structures. A meshing transmission gear is respectively installed on the two sets of hollow transmission shafts. The transmission gear located at the lower part meshes with the driving gear of the motor. A cooling water rotary joint is installed at the end of the hollow transmission shaft and connected to a cooling water inlet pipe. A cooling water inlet is provided on the cooling water inlet pipe. The front end of the hollow transmission shaft is blocked by a sealed inner pressure cover and a sealed outer pressure cover to form a water inlet cavity. The water inlet cavity is respectively communicated with the cooling cavities of the forming roller and the flat roller through the forming roller water inlet hole and the flat roller water inlet hole. The cooling cavities of the forming roller and the flat roller are respectively communicated with the forming roller return water sealing cavity and the flat roller return water sealing cavity through the forming roller water outlet hole and the flat roller water outlet hole. The forming roller return water sealing cavity and the flat roller return water sealing cavity are connected through the transmission shaft return water hole on the hollow transmission shaft. The transmission shaft return water hole forms a cooling return water cavity with the cooling water inlet pipe through the middle of the hollow transmission shaft. A cooling water outlet is provided on the cooling water rotary joint.

[0005] The hollow transmission shaft is connected to the profiled roll and the flat roll by a conical structure.

[0006] The beneficial effects of the present utility model are as follows: it ensures that the rubber strip is cooled early during profiling, reduces the temperature of the profiled rubber strip, and reduces the surface temperature of the profiled roll, eliminates the hidden dangers of early over-sulfuration and scorching, and improves the production efficiency and the wear resistance of the tread pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0008] Figure 1 Structural schematic diagram of the present utility model.

[0009] In the figure: 1. profiled roll support; 2. profiled roll support column; 3. supporting rotating bearing; 4. hollow transmission shaft; 5-1. profiled roll; 5-2. flat roll; 6. cooling cavity; 7. cooling water rotary joint; 8. cooling water inlet pipe; 9. cooling water inlet; 10. inner pressure cover with seal; 11. outer pressure cover with seal; 12. water inlet cavity; 13. profiled roll water inlet hole; 14. profiled roll water outlet hole; 15. profiled roll return water sealing cavity; 16. transmission shaft return water hole; 17. cooling return water cavity; 18. cooling water outlet; 19. drive motor; 20. drive gear; 21. transmission gear, A. rubber strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0010] In the figure, the utility model is provided with a profiled roll support 1. Two sets of profiled roll support columns 2 are installed at the middle position of the profiled roll support 1 and are reinforced by reinforcing plates. Two sets of concentric through holes are respectively provided on the two sets of profiled roll support columns 2, and supporting rotating bearings 3 are installed. Hollow transmission shafts 4 are respectively installed through the two sets of supporting rotating bearings 3, and a profiled roll 5-1 and a flat roll 5-2 are respectively installed at the front ends of the two sets of hollow transmission shafts 4. The profiled roll 5-1 and the flat roll 5-2 are supported by the two sets of supporting rotating bearings 3 respectively. The internal structures of the profiled roll 5-1 and the flat roll 5-2 are exactly the same. The profiled roll 5-1 and the flat roll 5-2 are designed with a hollow cooling cavity 6 structure. The cooling method is that a cooling water rotary joint 7 is installed at the end of the hollow transmission shaft 4 and is connected to a cooling water inlet pipe 8. The cooling water in the cooling water inlet pipe network enters the cooling water inlet pipe 8 through a cooling water inlet 9. When it reaches the front end of the hollow transmission shaft 4, it is blocked by a sealed inner gland 10 and a sealed outer gland 11 to form an inlet cavity 12. The sealed inner gland 10 and the sealed outer gland 11 prevent the cooling water from leaking. The cooling water flows through the inlet cavity 12 and enters the cooling cavity 6 through a profiled roll water inlet hole 13 to cool down the profiled roll 5-1. The return water in the cooling cavity 6 passes through a profiled roll water outlet hole 14 and is connected to a transmission shaft return water hole 16 on the hollow transmission shaft 4 in a profiled roll return water sealing cavity 15. The return water passes through the middle of the hollow transmission shaft 4 and returns to the cooling water return pipe network through a cooling water outlet 18 after passing through a cooling return water cavity 17 formed by the cooling water inlet pipe 8, forming a complete cooling circulation device.

[0011] The cooling water flows through the inlet cavity of the flat roll and enters the cooling cavity of the flat roll through the flat roll water inlet hole to cool down the flat roll 5-2. The return water in the cooling cavity of the flat roll passes through the flat roll water outlet hole and is connected to the transmission shaft return water hole on the hollow transmission shaft in the flat roll return water sealing cavity. The return water passes through the middle of the hollow transmission shaft and returns to the cooling water return pipe network through the cooling water outlet after passing through the cooling return water cavity formed by the cooling water inlet pipe, forming a complete cooling circulation device.

[0012] A driving motor 19 drives a driving gear 20 to drive a transmission gear 21, thereby driving the flat roll 5-2 and the profiled roll 5-1 to rotate. The transmission gears 21 for driving the flat roll 5-2 and the profiled roll 5-1 have the same module and number of teeth, ensuring the consistency of the linear speeds of the flat roll 5-2 and the profiled roll 5-1. The rubber strip A is extruded along between the profiled roll 5-1 and the flat roll 5-2 after cooling to meet the process standards, which not only ensures that the original efficiency of the equipment is not lost, but also eliminates the hidden dangers of early over-sulfurization and scorching, and improves the wear resistance of the tread pattern. The hollow transmission shaft 4 is connected to the profiled roll 5-1 and the flat roll 5-2 by a conical structure, increasing the fitting accuracy and not increasing the disassembly difficulty even in the long-term use process under the corrosion of the cooling water. The four supporting rotating bearing mounting seats on the profiled roll support column 2 all adopt an adjustable connection structure form, which can adjust the fitting accuracy and the position dimension to meet the process standards.

Claims

1. An online cooling device for the forming roller of a winding rubber strip extruding machine, which is provided with a forming roller support seat. Two sets of forming roller support columns are installed at the middle position of the forming roller support seat. Two sets of concentric through holes are respectively arranged on the two sets of forming roller support columns, and support rotating bearings are installed. The characteristics are that, The hollow transmission shafts are respectively installed through two sets of supporting rotating bearings, and a profiled roller and a flat roller are respectively installed at the front ends of the two sets of hollow transmission shafts. The internal structures of the profiled roller and the flat roller are exactly the same. The profiled roller and the flat roller are designed as a hollow cooling cavity structure. A pair of meshing transmission gears are respectively installed on the two sets of hollow transmission shafts. The transmission gear located at the lower part is meshed with the driving gear of the motor. A cooling water rotary joint is installed at the end of the hollow transmission shaft and connected to a cooling water inlet pipe. A cooling water inlet is provided on the cooling water inlet pipe. The front end of the hollow transmission shaft is blocked by a sealing inner gland and a sealing outer gland to form a water inlet cavity. The water inlet cavity is respectively communicated with the cooling cavities of the profiled roller and the flat roller through the profiled roller water inlet hole and the flat roller water inlet hole. The cooling cavities of the profiled roller and the flat roller are respectively communicated with the profiled roller return water sealing cavity and the flat roller return water sealing cavity through the profiled roller water outlet hole and the flat roller water outlet hole. The profiled roller return water sealing cavity and the flat roller return water sealing cavity are connected through the transmission shaft return water hole on the hollow transmission shaft. The transmission shaft return water hole passes through the middle of the hollow transmission shaft to form a cooling return water cavity with the cooling water inlet pipe. A cooling water outlet is provided on the cooling water rotary joint.

2. The on-line cooling device for the calender roll of the winding strip extruder according to claim 1, characterized in that The hollow transmission shaft is connected to the profiled roller and the flat roller by a conical structure.

Images