A servo electric device for the flexible mold of a tire vulcanizer

Abstract

The utility model relates to a servo electric device for a tire vulcanizer flexible mold, wherein the reducer is driven by a servo motor, the reducer is fixed to the top of the cylinder through a mounting seat, and the cylinder is arranged above the vulcanization chamber; after the rod head of the ball screw is combined with the thrust bearing, the thrust bearing is pressed into the bearing seat through the bearing gland, and the thrust bearing is pressed by a nut and a washer at the top of the ball screw, so that the ball screw and the inner ring of the thrust bearing are tightly connected to form a rigid connection; the push rod is sleeved in the inner cavity of the cylinder and guided by the guide seat at the lower end of the cylinder, the push rod is connected with a lead screw nut, and the push rod is formed with a hollow structure that allows the rod body of the ball screw to extend into the push rod; the ball screw is driven by the reducer, and the rotation of the ball screw guides the push rod along the inner cavity of the cylinder and lifts up and down in a straight line, so that the push rod is retracted and extended to open and close the flexible mold. It has the advantages of high automation, high positioning accuracy, simple installation, convenient control, and reliable products.

Description

Technical Field

[0001] The utility model relates to a servo electric device for an active mould of a tire vulcanizer. Background Art

[0002] When the tire vulcanizer vulcanizes radial tires, an active mold is used, which requires an active mold driving device to operate the active mold and realize the opening and closing of the active mold's contour template.

[0003] The existing hydraulic vulcanizer, the flexible mold drive device uses the telescopic action of the hydraulic cylinder to complete the opening and closing action of the flexible mold, which has the problems of low automation, low precision, complex structure, and many installation procedures. First, the cylinder stroke is detected and controlled by the proximity switch, and the mold needs to be manually adjusted and calibrated many times; secondly, the hydraulic system has a complex structure and many parts, and there are safety hazards such as oil leakage, pipe burst, and fire; finally, the control system is complex, and it is impossible to accurately control the opening and closing synchronization of each valve, and the system has the disadvantages of vibration and high noise. Summary of the invention

[0004] The utility model aims to provide a servo electric device for the active mold of a tire vulcanizer in view of the problems existing in the active mold driving device of the tire vulcanizer.

[0005] The purpose of the utility model is achieved in this way. A servo electric device for a tire vulcanizer flexible mold comprises a servo motor, a speed reducer, a cylinder, a ball screw and a push rod; the speed reducer is driven by the servo motor, and the speed reducer is fixed to the top of the cylinder through a mounting seat, and the cylinder is arranged above the vulcanization chamber; after the rod head of the ball screw is combined with the thrust bearing, the thrust bearing is pressed into the bearing seat through a bearing pressure cover, and the thrust bearing is pressed by a nut and a washer at the top of the ball screw, and the ball screw is tightly connected to the inner ring of the thrust bearing to form a rigid connection; the push rod is sleeved in the inner cavity of the cylinder and guided by a guide seat at the lower end of the cylinder, the push rod is connected with a lead screw nut, and the push rod is formed with a hollow structure that allows the rod body of the ball screw to extend into the push rod; the ball screw is driven by the speed reducer, and the rotational movement of the ball screw guides the push rod along the inner cavity of the cylinder and lifts up and down in a straight line, so that the push rod is retracted and extended to open and close the flexible mold.

[0006] In the utility model, the push rod is connected with the movable mold mounting support plate.

[0007] The utility model adopts a servo motor and a reducer transmission structure to replace the oil cylinder driven flexible mold device. It has high automation, high positioning accuracy, simple installation, convenient control, and reliable products, and can meet the characteristics of high automation, high accuracy, simple control, and high safety of the flexible mold opening and closing of future tire vulcanizers. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0009] Figure 2 yes Figure 1 A schematic structural diagram of the embodiment when the push rod of the flexible mold is not extended;

[0010] Figure 3 yes Figure 1 A schematic structural diagram of the embodiment after the push rod of the flexible mold is extended.

[0011] In the figure, 1. servo motor; 2. reducer; 3. cylinder; 4. ball screw; 5. push rod; 6. mounting seat; 7. thrust bearing; 8. bearing cover; 9. bearing seat; 10. nut; 11. washer; 12. guide seat; 13. screw nut; 14. movable mold mounting bracket. Implementation

[0012] Reference Figures 1 to 3 The present embodiment is a servo electric device for a tire vulcanizer active mold, comprising a servo motor 1, a reducer 2, a cylinder 3, a ball screw 4 and a push rod 5; the reducer is driven by the servo motor, and the reducer is fixed to the top of the cylinder through a mounting seat 6, and the cylinder is arranged above the vulcanization chamber; after the rod head of the ball screw is combined with a thrust bearing 7, the thrust bearing is pressed into a bearing seat 9 through a bearing pressure cover 8, and the thrust bearing is pressed at the top of the ball screw through a nut 10 and a washer 11, and the ball screw and the push rod are connected. The inner ring of the force bearing is tightly connected to form a rigid connection; the push rod is sleeved in the inner cavity of the cylinder and is guided by the guide seat 12 at the lower end of the cylinder, the push rod is connected with a screw nut 13, the push rod is formed with a hollow structure that allows the rod body of the ball screw to extend into the push rod, and the push rod is connected with a flexible mold mounting bracket 14; the ball screw is driven by the reducer, and the rotation of the ball screw guides the push rod along the inner cavity of the cylinder and rises and falls linearly, so that the push rod retracts and extends to open and close the flexible mold.

[0013] Reference Figure 1 The utility model is a modular product with an integrated design of a servo motor and a ball screw. It can be connected to the flexible mold by simply matching the flexible mold mounting bracket of the device with the connecting flange, accurately completing the push rod stroke detection and control and precise thrust control, saving mold installation time and thrust adjustment time.

[0014] Reference Figure 2 When the flexible mold moves from a closed state to an open state, the servo motor rotates forward. Through the deceleration effect of the reducer, the ball screw rotates at a set speed, driving the screw nut to move along the positive direction of the cylinder, and the push rod extends at a set speed. When the push rod extends to the set stroke, the servo motor stops rotating and the flexible mold is opened.

[0015] Reference Figure 3When the vulcanization chamber is in the mold opening state, the template of the flexible mold is opened, and the push rod will be in the extended state of the set stroke. When the flexible mold template needs to be controlled to shrink, the servo motor rotates in the opposite direction. Through the deceleration effect of the reducer, the ball screw rotates at the set speed, driving the screw nut to move in the opposite direction of the cylinder, and the push rod shrinks at the set speed. When the push rod shrinks to the set stroke, the servo motor stops rotating and the flexible mold is closed.

[0016] The utility model converts the high speed and low torque output of the motor into the low speed and high torque output of the ball screw through the reducer, and the push rod cooperates with the guide seat to enable the push rod to move linearly; at the same time, the coaxiality of the ball screw and the screw nut is ensured, so that the radial force borne by the push rod is more stable and reliable. The utility model has a simple structure and simple control, and can accurately control the speed, position and thrust.

Claims

1. A servo electric device for a tire vulcanizing machine, characterized in that: It includes a servo motor (1), a reducer (2), a cylinder (3), a ball screw (4) and a push rod (5); The reducer is driven by a servo motor, and the reducer is fixed to the top of the cylinder through a mounting seat (6), and the cylinder is arranged above the vulcanization chamber; After the rod head of the ball screw is combined with the thrust bearing (7), the thrust bearing is pressed into the bearing seat (9) through the bearing cover (8), and the thrust bearing is pressed at the top of the ball screw through a nut (10) and a washer (11), so that the ball screw and the inner ring of the thrust bearing are tightly connected to form a rigid connection; The push rod is sleeved in the inner cavity of the cylinder and guided by a guide seat (12) at the lower end of the cylinder. The push rod is connected to a lead screw nut (13). The push rod is formed with a hollow structure that allows the rod body of the ball screw to extend into the push rod. The ball screw is driven by a reducer, and the rotation of the ball screw causes the push rod to be guided along the inner cavity of the cylinder and to rise and fall linearly, so that the push rod can be retracted and extended to open and close the flexible mold.

2. The tire vulcanizer active mold servo electric device according to claim 1, characterized in that: The push rod is connected to a flexible mold mounting support plate (14).

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