Pre-tightening combined slide of large screw press

Abstract

A large spiral press pre-tightening combined slider, comprising an upper slider part with a center stepped hole and a connecting threaded hole, a convex lower slider part combined with the upper slider part in convex-concave mode and provided with a stepped connecting hole, a plurality of hollow pre-tightening bolts connecting the upper slider part and the convex lower slider part together through the connecting threaded hole of the upper slider part and the stepped connecting hole of the convex lower slider part, and a plurality of pre-tightening nuts fastening the upper slider part, the convex lower slider part and the pre-tightening bolts together. The large spiral press pre-tightening combined slider can guarantee machining precision requirement, ensure machining quality, is easy to manufacture, has low production cost, is convenient to transport, is uniformly heated, is convenient to heat, has high pre-tightening precision, is safe in operation, has high reliability, is convenient to use and has long service life. The large spiral press pre-tightening combined slider can be widely applied to large spiral presses.

Description

Technical Field

[0001] This invention relates to a pre-tightened combined slide block for a large screw press, which can be widely used in large screw presses. Background Technology

[0002] Existing large screw press slides are generally integral structure slides. Due to the high height of the slide and the large diameter of the inner hole, it is difficult to ensure the accuracy requirements of the inner hole and the bottom of the inner hole during integral machining. It is not easy to guarantee the machining quality, manufacturing is troublesome, production costs are high, and transportation is inconvenient. Summary of the Invention

[0003] The purpose of this invention is to provide a pre-tightening combined slider for a large screw press that ensures processing accuracy, processing quality, ease of manufacturing, low production cost, convenient transportation, uniform heating, convenient heating, high pre-tightening accuracy, safe operation, high reliability, convenient use, and long service life.

[0004] To achieve the aforementioned objectives, the present invention provides a pre-tightened combined slider for a large screw press, comprising an upper slider body with a central stepped hole and a connecting threaded hole, a convex lower slider body that is convex-concave with the upper slider body and has a stepped connecting hole, a plurality of hollow pre-tightening bolts that connect the upper slider body and the convex lower slider body together through the connecting threaded hole of the upper slider body and the stepped connecting hole of the convex lower slider body, and a plurality of pre-tightening nuts that fasten the upper slider body, the convex lower slider body and the pre-tightening bolts together.

[0005] The working principle of this invention, a pre-tightened combined slider for a large screw press, is as follows: First, the inner holes and end faces of the upper and lower slider sections are machined to the required dimensions. Second, the upper and lower slider sections are assembled into one unit. Then, a hollow pre-tightening bolt is passed through the lower slider section and tightened into the threaded hole of the upper slider section. Finally, a heating tube is placed in the hole of the hollow pre-tightening bolt. After heating for a certain period of time, the hollow pre-tightening bolt elongates, and then the pre-tightening nut is tightened. In this way, after the hollow pre-tightening bolt cools to room temperature, a pre-tightening force is generated, firmly binding the upper and lower slider sections together as one unit.

[0006] This invention relates to a pre-tightened combined slider for a large screw press. It adopts a split structure with separate upper and lower sliders, resulting in a small volume, small slider height, and small inner diameter. During processing, it is easy to ensure the accuracy requirements of the inner hole and the bottom of the inner hole, thus ensuring processing accuracy and quality. It is easy to manufacture, has low production costs, and is convenient to transport.

[0007] The present invention relates to a pre-tightened combined slider for a large screw press, which uses hollow pre-tightening bolts that are easy to place in a heater through hollow holes, thus ensuring uniform heating and convenient heating.

[0008] The present invention relates to a pre-tightening combined slider for a large screw press, which uses hollow pre-tightening bolts to achieve higher precision control during the pre-tightening process, thus resulting in high pre-tightening accuracy.

[0009] This invention relates to a pre-tightening combined slide block for a large screw press, employing hollow pre-tightening bolts. This ensures that each bolt receives the same pre-tightening force, and the consistent bolt load ensures high precision through the application of uniform force. This high reliability reduces uncertainty and failure risks during bolt pre-tightening. It also improves the consistency of bolt connections, thus ensuring torque consistency. This consistency is crucial for the long-term stable operation of the equipment, reducing equipment failures and maintenance costs caused by uneven bolt pre-tightening forces. Therefore, it offers safe operation and high reliability.

[0010] This invention relates to a pre-tightening combined slide block for large screw presses, employing hollow pre-tightening bolts. The operation of these bolts is simple; merely setting the desired torque value allows for automatic pre-tightening, reducing the skill requirements for operators. This convenience improves work efficiency and reduces human error. Therefore, it is easy to use.

[0011] An invention relates to a pre-tensioned combined slide block for large screw presses, employing hollow pre-tensioned bolts. Purely axial, tensile loads ensure no torsional stress occurs. This stress-free characteristic helps protect bolts and connectors, extending their service life. Therefore, it boasts a long service life.

[0012] In summary, the pre-tightened combined slide block of the large screw press of this invention ensures the required machining accuracy and quality, is easy to manufacture, has low production cost, is convenient to transport, provides uniform heating, is easy to heat, has high pre-tightening accuracy, is safe to operate, has high reliability, is easy to use, and has a long service life. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 View A in the diagram. Detailed Implementation

[0015] exist Figure 1 , Figure 2In this invention, a pre-tightened combined slider for a large screw press includes an upper slider body 1 with a central stepped hole and a connecting threaded hole; a convex lower slider body 2 with a stepped connecting hole that is convex-concave connected to the upper slider body; a plurality of hollow pre-tightening bolts 3 that connect the upper slider body and the convex lower slider body through the connecting threaded hole of the upper slider body and the stepped connecting hole of the convex lower slider body; and a plurality of pre-tightening nuts 4 that fasten the upper slider body, the convex lower slider body, and the pre-tightening bolts together.

[0016] The present invention relates to a pre-tightened combined slider for a large screw press. The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments without departing from the scope of the present invention, based on the technical essence of the present invention, and within the spirit and principles of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A pre-tightened combined slide block for a large screw press, characterized in that, It includes an upper slider body with a central stepped hole and a connecting threaded hole, a convex lower slider body that is convex-concave with the upper slider body and has a stepped connecting hole, several hollow preload bolts that connect the upper slider body and the convex lower slider body together through the connecting threaded hole of the upper slider body and the stepped connecting hole of the convex lower slider body, and several preload nuts that fasten the upper slider body, the convex lower slider body and the preload bolts together.

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