A large ring piece bulging mechanism

Abstract

The utility model discloses a large -scale ring piece bulging mechanism belongs to metal plastic forming equipment technical field, a large -scale ring piece bulging mechanism, including the support ring, the support ring equidistance is set up movable slot in the circumference, sets up the bulging slider in movable slot, the fixed connection oil cavity of support ring lower surface inner ring, is equipped with movable plate in oil cavity, and the top post is connected to the upper end of movable plate, and the top post penetrates the top of oil cavity and is connected bulging ring, the inner ring of bulging slider is equipped with the inclined plane. The utility model discloses a large -scale ring piece bulging mechanism, through the linkage structure of rigid bulging ring and spacing strip, forces to pull the bulging slider reset, avoids the dependence elastic component, eliminates the reset deviation caused by elastic fatigue and wear and tear, and a plurality of bulging sliders are driven by the same bulging ring, ensure synchronous radial movement, and the bulging is even, and the ring piece forming quality is promoted, and first limit sliding slot and second limit sliding slot double -sided orientation.

Description

Technical Field

[0001] This utility model relates to the field of metal plastic forming equipment technology, and more specifically, to a large ring forming mechanism. Background Technology

[0002] For large ring components, existing technologies mostly employ hydraulic bulging for processing. Chinese patent CN207756680U discloses a large ring component bulging mechanism, including a support body with a cylindrical outer surface, annular grooves along the circumferential direction on the sidewalls of the support body, annular pouches and telescopic rings within the grooves, the telescopic rings located outside the pouches, and inlet and outlet pipes connected to the pouches. While this patent has a simple structure, it fails to solve the problem of resetting the telescopic rings. Using an elastic ring to assist in resetting the telescopic rings presents the following problems: 1. The elastic ring is easily worn due to contact and compression with the component to be bulged, affecting its elastic recovery; 2. The elastic ring itself lacks rigidity and is easily affected by resistance, making it difficult to guarantee accuracy during elastic resetting. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a large ring forming mechanism to solve the above-mentioned shortcomings.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] This utility model discloses a large ring forming mechanism, including a support ring, on which movable grooves are equally spaced around the circumference, and a forming slider is arranged in the movable groove. An oil cavity is fixedly connected to the inner ring of the lower surface of the support ring, and a movable plate is arranged in the oil cavity. A top column is connected to the upper end of the movable plate, and the top column passes through the top of the oil cavity and is connected to the forming ring. The inner ring of the forming slider has an inclined surface, and the forming ring is a multi-faceted pyramid, with the conical surface of the forming ring in contact with the inclined surface.

[0006] Preferably, the movable groove is provided with a first limiting groove on the upper and lower sides.

[0007] Preferably, the number of the expansion sliders is 8-24, and each expansion slider has a limiting block on its upper and lower surfaces, and the limiting block is slidably connected to the first limiting groove.

[0008] Preferably, the bottom of the oil chamber is provided with evenly distributed oil inlet holes for injecting hydraulic oil to drive the movable plate to rise and fall.

[0009] Preferably, the number of conical surfaces of the expanding ring is the same as the number of expanding sliders, and limit strips are provided on the conical surfaces.

[0010] Preferably, a second limiting groove is opened on the inclined surface, and the limiting strip slides in cooperation with the second limiting groove to realize the radial linkage of the bulging slider.

[0011] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0012] This utility model discloses a large ring forming mechanism. Through the linkage structure of a rigid forming ring and a limiting strip, the forming slider is forcibly pulled back to its original position, avoiding reliance on elastic elements and eliminating reset deviations caused by elastic fatigue and wear. Multiple forming sliders are driven by the same forming ring, ensuring synchronous radial movement, uniform forming, and improved ring forming quality. The first and second limiting grooves provide dual guidance, restricting the forming slider to move only along a set path, preventing tilting or jamming. The easily damaged elastic ring is eliminated. The use of hydraulic drive and rigid reset mechanism reduces wear and extends service life. It is suitable for processing large rings. By adjusting the number of forming sliders and hydraulic pressure, it can be adapted to rings of different sizes and materials. Attached Figure Description

[0013] Figure 1 This is a top view of the large ring-shaped forming mechanism of this utility model;

[0014] Figure 2 This is a cross-sectional view of the large ring-shaped forming mechanism of this utility model;

[0015] Figure 3 This is a diagram showing the bulging state of the large ring-shaped bulging mechanism of this utility model;

[0016] Figure 4 This is an exploded view of the bulging slider and bulging ring of this utility model.

[0017] In the figure: 1. Support ring; 11. Oil cavity; 111. Oil inlet; 12. Movable plate; 13. Top column; 14. First limiting groove; 2. Expanding slider; 21. Limiting block; 22. Inclined surface; 221. Second limiting groove; 3. Expanding ring; 31. Limiting strip. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0020] Combination Figures 1-4This utility model discloses a large ring forming mechanism, including a support ring 1. Movable grooves are evenly spaced on the support ring 1, and forming sliders 2 are installed within the movable grooves. First limiting grooves 14 are provided on both the upper and lower sides of the movable grooves. An oil cavity 11 is fixedly connected to the inner ring of the lower surface of the support ring 1. A movable plate 12 is installed within the oil cavity 11, and a top column 13 is provided at the upper end of the movable plate 12. The movable plate 12 is sealed to the oil cavity 11. The top columns 13 are evenly distributed and penetrate the top of the oil cavity 11, serving as a guide for the movable plate 12. An forming ring 3 is connected to the upper end of the top column 13. Oil inlets 111 are evenly distributed at the bottom of the oil cavity 11. Hydraulic oil is injected into the oil cavity 11 through the oil inlets 111, lifting the movable plate 12 and, through the top columns 13, lifting the forming ring 3.

[0021] Specifically, there are 8-24 expansion sliders 2. Limiting blocks 21 are connected to the upper and lower surfaces of the expansion sliders 2. The limiting blocks 21 are movably connected to the first limiting groove 14. The first limiting groove 14 and the limiting blocks 21 together restrict the expansion sliders 2 to move in a straight line. All the edges of the expansion sliders 2 are not connected, forming a ring structure. An inclined surface 22 is provided near the inner ring of the expansion sliders 2. A second limiting groove 221 is provided on the inclined surface 22.

[0022] More specifically, the expanding ring 3 is a hollow multi-faceted pyramidal structure. The area of ​​the upper surface of the expanding ring 3 is smaller than that of the lower surface. The number of conical surfaces of the expanding ring 3 corresponds one-to-one with the number of expanding sliders 2. The conical surfaces of the expanding ring 3 are connected to the inclined surface 22. A limiting strip 31 is provided on the conical surface of the expanding ring 3, which is movably connected to the second limiting groove 221. The limiting strip 31 is inserted into the second limiting groove 221. When the expanding ring 3 moves upward, the conical surface pushes the inclined surface 22 to spread horizontally, increasing the ring diameter and achieving the purpose of expanding. The limiting strip 31 and the second limiting groove 221 are linked. When the expanding ring 3 moves downward to reset, the limiting strip 31 pulls the second limiting groove 221 to reset. Since the expanding ring 3 is a fixed steel structure, it is not easily deformed and can drive all the expanding sliders 2 to reset simultaneously. In addition, the first limiting groove 14 guides and improves the overall accuracy.

[0023] Working process: The expanding slider 2 is in a contracted state in the movable groove, and the expanding ring 3 is located at the lowest position of the top of the oil cavity 11. The limiting strip 31 is engaged with the second limiting groove 221. During expansion, hydraulic oil is injected into the oil cavity 11 through the oil inlet 111, pushing the movable plate 12 upward and driving the top column 13 to lift the expanding ring 3. The conical surface of the expanding ring 3 contacts the inclined surface 22 of the expanding slider 2. Through the linkage between the limiting strip 31 and the second limiting groove 221, the expanding slider 2 is forced to slide radially outward along the first limiting groove 14 to realize the ring expansion. During reset, the hydraulic oil is discharged, the movable plate 12 moves downward, and the expanding ring 3 pulls the second limiting groove 221 through the limiting strip 31, so that the expanding slider 2 slides in the opposite direction along the inclined surface 22 to reset. The first limiting groove 14 ensures that the reset path is accurate and avoids deviation.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A large ring forming mechanism, comprising a support ring (1), characterized in that: The support ring (1) has equidistant movable grooves in its circumference, and an expansion slider (2) is provided in the movable groove. The inner ring of the lower surface of the support ring (1) is fixedly connected to the oil cavity (11). The oil cavity (11) is provided with a movable plate (12). The upper end of the movable plate (12) is connected to a top column (13). The top column (13) passes through the top of the oil cavity (11) and is connected to the expansion ring (3). The inner ring of the expansion slider (2) is provided with an inclined surface (22). The expansion ring (3) is a multi-faceted pyramid. The conical surface of the expansion ring (3) is in contact with the inclined surface (22).

2. The large ring forming mechanism according to claim 1, characterized in that: The movable groove is provided with a first limiting slide groove (14) on the upper and lower sides.

3. The large ring forming mechanism according to claim 2, characterized in that: The number of the expansion sliders (2) is 8-24 pieces. Each expansion slider (2) has a limiting block (21) on its upper and lower surfaces. The limiting block (21) is slidably connected to the first limiting groove (14).

4. The large ring forming mechanism according to claim 1, characterized in that: The bottom of the oil chamber (11) is provided with uniformly distributed oil inlet holes (111).

5. The large ring forming mechanism according to claim 1, characterized in that: The number of conical surfaces of the expansion ring (3) is the same as the number of expansion sliders (2), and limit strips (31) are provided on the conical surfaces.

6. The large ring forming mechanism according to claim 5, characterized in that: The inclined surface (22) has a second limiting groove (221) and the limiting strip (31) slides in conjunction with the second limiting groove (221).

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