Flywheel slipping positioning device of numerical control electric screw press

Abstract

The utility model provides a numerical control electric screw press flywheel slip positioning device, a flywheel device comprises a flywheel combination body, a tensioning screw rod and a disc spring group, the flywheel combination body comprises a slip rotating body, an upper fixed disc and a lower fixed disc, the upper fixed disc and the lower fixed disc are opposite up and down and clamp the slip rotating body, and the upper fixed disc and the lower fixed disc are arranged on the upper side and the lower side of the slip rotating body. Friction plates are arranged on the contact faces of the slipping rotating body and the upper fixing disc and the contact faces of the slipping rotating body and the lower fixing disc respectively, the tensioning screw rod is connected with the upper fixing disc and the lower fixing disc in a penetrating mode, the tensioning screw rod is sleeved with a positioning sleeve, the positioning sleeve is arranged outside the tensioning screw rod in an attached mode, the positioning sleeve is sleeved with a disc spring set, and a pressing ring is arranged at the end of the disc spring set in a pressing mode. The outer portion of the pressing ring is fixed and pressed through a nut. When the flywheel assembly exceeds the limit, the slipping rotating body can slip and rotate independently, energy is consumed through friction between the slipping rotating body and the friction plate, overload is avoided, release limitation of hitting force is adjusted through rotation of the nut, and the structure is more durable.

Description

Technical Field

[0001] The utility model relates to an improved structure of a flywheel of a screw press, in particular to a flywheel slipping positioning device of a numerically controlled electric screw press. Background Art

[0002] CNC electric screw press is a kind of equipment used for forging production. It mainly uses flywheel for energy storage. The moving parts of the press work downward to generate impact force, and the flywheel structure has an impact force overload slip system. When the impact force is overloaded, the flywheel structure slips and idles to release excess energy, which plays a role in safe force unloading. The flywheel assembly has a circumferentially distributed screw adjustment structure. The screw adjustment structure adjusts the clamping force. When the impact force of the flywheel is overloaded, the flywheel contacts the friction plate and slides to unload the force to achieve safe operation. Since the original screw adjustment device has a large installation gap, it will withstand a large radial force when slipping. After a long time, there will be problems such as screw deformation and enlarged gap, which will lead to working vibration, so it needs to be improved. Utility Model Content

[0003] The utility model aims to overcome the above-mentioned deficiencies in the prior art and to provide a flywheel slip positioning device for a numerically controlled electric screw press.

[0004] The technical solution adopted by the utility model to solve the above-mentioned problem is: the flywheel device includes a flywheel assembly, a tensioning screw, and a disc spring group. The flywheel assembly includes a slipping rotor, an upper fixed plate and a lower fixed plate. The upper fixed plate and the lower fixed plate are opposite to each other and clamp the slipping rotor. Friction plates are arranged on the contact surfaces of the slipping rotor and the upper fixed plate and the lower fixed plate. The tensioning screw penetrates and connects the upper fixed plate and the lower fixed plate. A positioning sleeve is sleeved on the tensioning screw. The positioning sleeve is fittedly arranged on the outside of the tensioning screw. The disc spring group is sleeved on the outside of the positioning sleeve. A pressure ring is arranged at the end of the disc spring group for pressing, and the outside of the pressure ring is fixed and pressed by a nut. The flywheel assembly includes an upper fixed plate and a lower fixed plate, and clamps the slipping rotating body up and down. When the stored impact force does not exceed the limit, the flywheel assembly rotates as a whole to provide the impact force. When it exceeds the limit, the slipping rotating body will slip and rotate alone, and consume energy through friction with the friction plate. After releasing the energy, it resumes the original integrated rotation. The tensioning screw fills the original lateral gap through the positioning sleeve and maintains the shape of the tensioning screw to avoid deformation. The nut rotates to adjust the release limit of the impact force, and the structure is more durable.

[0005] Furthermore, the positioning sleeve is a cylindrical sleeve made of wear-resistant metal, the outer wall of one end of which is embedded and matched with the lower fixed plate, and the other outer wall surface of the positioning sleeve is matched with the inner ring of the disc spring group. The positioning sleeve has good rigidity, fills the working gap of the tensioning screw, effectively improves the working life of the tensioning screw, reduces vibration, and improves reliability and stability.

[0006] Furthermore, one side of the pressure ring has an annular ring corresponding to the disc spring group, and is pressed against the surface of the disc spring group, and the other side of the pressure ring is a pressing surface, which is contacted with the end face of the nut. The pressure ring and the disc spring group are in surface contact, and when elastic pressure is applied, the pressure area is large, the structural wear is reduced, and the straightness of the axial movement of the tensioning screw is maintained.

[0007] Furthermore, the nut is provided with an anti-rotation plate, which is fixed to the nut by a screw and limits the relative rotation between the nut and the tensioning screw. The rotation adjustment of the nut can realize the control of the effective striking energy and the degree of energy overrun, so the anti-rotation plate is provided on the nut to lock the relative position of the nut and prevent the nut from loosening.

[0008] Compared with the prior art, the utility model has the following advantages and effects: the utility model is an improvement on the flywheel device of the electric screw press, which can realize the rotation stability of the flywheel device during slipping and unloading force, improve the strength of the fixed tension structure, effectively release excess impact force, increase the life of the structure, reduce working vibration, and improve production safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structural comparison before and after improvement.

[0010] Figure 2 It is a partial enlarged schematic diagram of the structure.

[0011] In the figure: 1, flywheel assembly, 2, tension screw, 3, disc spring group, 4, slipping rotating body, 5, upper fixed plate, 6, lower fixed plate, 7, friction plate, 8, positioning sleeve, 9, pressure ring, 10, nut, 11, anti-rotation plate. DETAILED DESCRIPTION

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0013] A flywheel slip positioning device for a numerically controlled electric screw press, the flywheel device includes a flywheel assembly 1, a tensioning screw 2, and a disc spring group 3, the flywheel assembly 1 includes a slipping rotor 4, an upper fixed plate 5 and a lower fixed plate 6, the upper fixed plate 5 and the lower fixed plate 6 are opposite to each other and clamp the slipping rotor 4, the contact surfaces of the slipping rotor 4 and the upper fixed plate 5 and the lower fixed plate 6 are provided with friction plates 7, the tensioning screw 2 penetrates and connects the upper fixed plate 5 and the lower fixed plate 6, the tensioning screw 2 is sleeved with a positioning sleeve 8, the positioning sleeve 8 is fittedly arranged on the outside of the tensioning screw 2, the disc spring group 3 is sleeved on the outside of the positioning sleeve 8, the end of the disc spring group 3 is pressed by a pressing ring 9, and the outside of the pressing ring 9 is fixed and pressed by a nut 10.

[0014] The positioning sleeve 8 is a cylindrical sleeve made of wear-resistant metal, the outer wall of one end of which is embedded and matched with the lower fixed plate 6, and the other outer wall surface of the positioning sleeve 8 is matched with the inner ring of the disc spring group 3.

[0015] One side of the pressing ring 9 has an annular ring corresponding to the disc spring assembly 3 and is pressed against the surface of the disc spring assembly 3 . The other side of the pressing ring 9 is a pressing surface and is in contact with the end face of the nut 10 .

[0016] The nut 10 is provided with an anti-rotation sheet 11 , which is fixed to the nut 10 by screws and limits the relative rotation between the nut 10 and the tensioning screw rod 2 .

[0017] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary rather than restrictive. The scope of the present invention is defined by the claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim involved.

[0018] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A flywheel slipping positioning device for a numerically controlled electric screw press, characterized in that: The flywheel device comprises a flywheel assembly (1), a tensioning screw (2), and a disc spring group (3). The flywheel assembly (1) comprises a slipping rotating body (4), an upper fixed plate (5), and a lower fixed plate (6). The upper fixed plate (5) and the lower fixed plate (6) are opposite to each other and clamp the slipping rotating body (4). The contact surfaces of the slipping rotating body (4) and the upper fixed plate (5) and the lower fixed plate (6) are all provided with friction plates (7). The tensioning screw (2) penetrates and connects the upper fixed plate (5) and the lower fixed plate (6). A positioning sleeve (8) is sleeved on the tensioning screw (2). The positioning sleeve (8) is fittedly arranged on the outside of the tensioning screw (2). The disc spring group (3) is sleeved on the outside of the positioning sleeve (8). A pressing ring (9) is arranged to press the end of the disc spring group (3). The outside of the pressing ring (9) is fixed and pressed by a nut (10).

2. The flywheel slipping positioning device for a CNC electric screw press according to claim 1 is characterized in that: The positioning sleeve (8) is a cylindrical sleeve made of wear-resistant metal, the outer wall of one end of which is embedded and matched with the lower fixed plate (6), and the other outer wall surface of the positioning sleeve (8) is matched with the inner ring of the disc spring group (3).

3. The flywheel slipping positioning device for a CNC electric screw press according to claim 1 is characterized in that: One side of the pressure ring (9) has an annular ring corresponding to the disc spring assembly (3) and is pressed against the surface of the disc spring assembly (3); the other side of the pressure ring (9) is a pressing surface and is in contact with the end face of the nut (10).

4. The flywheel slipping positioning device for a CNC electric screw press according to claim 1 is characterized in that: The nut (10) is provided with an anti-rotation sheet (11), which is fixed to the nut (10) by means of screws and limits the relative rotation between the nut (10) and the tensioning screw rod (2).

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