Forging die convenient to demould

Abstract

The utility model relates to the technical field of forging equipment, in particular to a forging die convenient to demould, which comprises an upper die arranged below a top plate and a lower die arranged on a base, and the upper die is matched with the lower die; the two sets of lower dies can move to the position under the upper die, and the upper die moves downwards to abut against the lower dies to jointly act on a forged workpiece. According to the forging die, the lower die is moved to the side for cooling through the first moving air cylinder and the second moving air cylinder after a workpiece is formed and opened, demolding is easier after the workpiece is formed and cooled, meanwhile, demolding deformation of the workpiece is reduced, and the yield of the workpiece is increased.

Description

Technical Field

[0001] This utility model relates to the field of forging equipment technology, and in particular to a forging die that is easy to demold. Background Art

[0002] Forging dies are molds used in the forging process. Under the action of external force, the raw material undergoes plastic deformation in the forging die, thereby obtaining a workpiece with the required shape and size.

[0003] In hot forging, the lower die is fixed directly below the upper die, which can move up and down. After the workpiece is forged, the upper die moves upward, separating from the lower die. The forged workpiece is at a high temperature, and an ejector pin is used to push it out of the lower die. Because the forged workpiece is at a high temperature, it may deform upon demolding, reducing the product yield. In this case, the forged workpiece needs to be cooled down before being ejected from the lower die.

[0004] Therefore, the applicant provides a forging die that is easy to demold, in order to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide a forging die that is easy to demold, solving the problems of existing dies being difficult to demold after opening, and workpieces easily deforming during demolding, thus reducing the yield rate.

[0006] To solve the above-mentioned technical problems, this utility model provides a forging die that is easy to demold, including an upper die set under a top plate and a lower die set on a base, with the upper die adapted to the lower die; there are two sets of lower dies, the lower die can be moved to be directly below the upper die, and the upper die moves downward to abut against the lower die, together acting on the forging workpiece.

[0007] Furthermore, the lower molds are respectively installed on the first lower mold base and the second lower mold base, which are respectively located at both ends of the upper surface of the base.

[0008] Furthermore, the piston rod of the first moving cylinder is connected to the left side of the first lower mold base, and the piston rod of the second moving cylinder is connected to the right side of the second lower mold base.

[0009] Furthermore, the first movable cylinder and the second movable cylinder are respectively fixed to the inner walls of the first vertical plate and the second vertical plate, and the first vertical plate and the second vertical plate are respectively abutted against the two sides of the base.

[0010] Furthermore, two slide rails are arranged side by side on the upper surface of the base, with the slide rails perpendicular to the first vertical plate.

[0011] Furthermore, two inverted grooves are respectively opened at the bottom of the first lower mold base and the second lower mold base, and the grooves are adapted to the slide rail.

[0012] Furthermore, a lower mold cavity is provided on the upper part of the lower mold body.

[0013] Furthermore, a forging cylinder is installed on the top plate, and the piston rod of the forging cylinder passes through the top plate and connects to the top of the upper mold base. The upper mold is installed at the lower part of the upper mold base.

[0014] Furthermore, the lower mold is provided with a through hole communicating with the lower mold cavity, and an ejector mechanism is installed in the through hole.

[0015] Furthermore, an upper mold cavity is provided at the lower part of the upper mold body, and the size and shape of the upper mold cavity opening are the same as those of the lower mold cavity opening.

[0016] By adopting the above technical solution, this utility model has the following beneficial effects:

[0017] 1. The present invention provides a forging die that is easy to demold. The forging die uses a first moving cylinder and a second moving cylinder to move the lower die to the side for cooling after the workpiece is formed and opened. After the workpiece is formed and cooled, it is easier to demold, and at the same time, the demolding deformation of the workpiece is reduced, and the yield of the workpiece is improved. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A schematic diagram of a forging die that facilitates demolding;

[0020] Figure 2 for Figure 1 A three-dimensional structural diagram of the central base, the first lower mold base, and the second lower mold base, etc.

[0021] Figure 3 for Figure 1 Sectional view of the middle and lower mold;

[0022] Figure 4 for Figure 1 Sectional view of the top plate and the upper mold.

[0023] Reference numerals in the attached drawings: 1. Top plate; 2. Forging cylinder; 3. Upper die base; 4. Upper die; 401. Upper die cavity; 5. Base; 501. First vertical plate; 502. Second vertical plate; 503. Slide rail; 6. First lower die base; 7. Second lower die base; 8. First moving cylinder; 9. Second moving cylinder; 10. Slide groove; 11. Lower die; 1101. Lower die cavity; 1102. Push rod mechanism. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The present invention will be further explained below with reference to specific embodiments.

[0028] like Figure 1-4As shown, this embodiment provides a forging die that facilitates demolding, including an upper die 4 disposed under a top plate 1 and a lower die 11 disposed on a base 5. The upper die 4 is adapted to the lower die 11. There are two sets of lower dies 11. The lower die 11 can be moved to be directly below the upper die 4, and the upper die 4 moves downward to abut against the lower die 11, working together to forge the workpiece. The piston rod of the first moving cylinder 8 is connected to the left side of the first lower die base 6, and the piston rod of the second moving cylinder 9 is connected to the right side of the second lower die base 7. Both the first moving cylinder and the second moving cylinder are existing products. The first moving cylinder 8 and the second moving cylinder 9 are respectively fixed to the inner walls of the first vertical plate 501 and the second vertical plate 502, which are respectively abutted against the two sides of the base 5. The upper die is located directly below the base, and the first moving cylinder and the second moving cylinder have the same stroke. During operation, the first moving cylinder operates, moving the first lower die holder to the right until it is directly below the upper die holder. The forging cylinder then moves the upper die holder downwards for the forging process. After the workpiece is formed, the upper and lower dies separate, and the first lower die holder returns to its original position to the left, allowing the workpiece to cool. Simultaneously, the second moving cylinder operates, moving the second lower die holder to the left, and the forging cylinder operates to forge the second workpiece. Two sets of lower dies and one set of upper dies are used. The upper die does not stop operating; while one set of lower dies cools, the other set performs the forging process. This means that two workpieces can be forged within the same timeframe. The forging process takes approximately 40-60 minutes. After forming, a forged workpiece can be cooled for 20-30 minutes before being demolded using an ejector pin. Demolding after cooling reduces demolding deformation and improves the workpiece yield.

[0029] In this embodiment, the lower mold 11 is respectively mounted on the first lower mold base 6 and the second lower mold base 7, which are respectively located at both ends of the upper surface of the base 5. The first lower mold base and the second lower mold base have the same shape and size. The lower mold 11 is provided with a through hole communicating with the lower mold cavity 1101, and an ejector mechanism 1102 is provided in the through hole. The ejector mechanism is an existing product used to assist in demolding the workpiece and avoid defects such as tearing, scratching or deformation of the workpiece during demolding. After the workpiece has been allowed to cool, the ejector mechanism pushes the workpiece out of the lower mold to complete the demolding.

[0030] In this embodiment, two slide rails 503 are arranged side by side on the upper surface of the base 5, and the slide rails 503 are perpendicular to the first vertical plate 501. Two inverted sliding grooves 10 are respectively formed at the bottom of the first lower mold base 6 and the second lower mold base 7, and the sliding grooves 10 are adapted to the slide rails 503. The sliding grooves work in conjunction with the slider to guide the movement of the first lower mold base and the second lower mold base.

[0031] In this embodiment, a forging cylinder 2 is installed on the top plate 1. The piston rod of the forging cylinder 2 passes through the top plate 1 and is connected to the top of the upper die base 3. An upper die 4 is installed at the lower part of the upper die base 3. The forging cylinder is an existing product. The piston rod of the forging cylinder drives the upper die to move up and down to complete the forging process.

[0032] In this embodiment, an upper die cavity 401 is provided at the lower part of the upper die 4 body, and a lower die cavity 1101 is provided at the upper part of the lower die 11 body. The size and shape of the opening of the upper die cavity 401 and the opening of the lower die cavity 1101 are consistent to ensure that the upper die cavity and the lower die cavity can form a complete cavity, and the shape of the cavity is determined according to the shape of the forging workpiece.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A forging die for easy demoulding, characterized in that: The invention comprises an upper die (4) arranged under a top plate (1), and a lower die (11) arranged on a base (5), wherein the upper die (4) is adapted to fit the lower die (11); the lower die (11) comprises two sets, the lower die (11) can be moved to a position directly below the upper die (4), and the upper die (4) moves downward to abut against the lower die (11), so as to act together on a forged workpiece.

2. A forging die for easy demoulding according to claim 1, characterized in that: The lower die (11) is respectively mounted on a first lower die seat (6) and a second lower die seat (7); the first lower die seat (6) and the second lower die seat (7) are respectively arranged at two ends of the upper surface of the base (5).

3. A forging die for easy demoulding according to claim 2, characterized in that: The left side of the first lower die base (6) is connected to the piston rod of the first movable cylinder (8), and the right side of the second lower die base (7) is connected to the piston rod of the second movable cylinder (9).

4. A forging die for easy demoulding according to claim 3, characterized in that: The first movable cylinder (8) and the second movable cylinder (9) are respectively fixed to the inner walls of the first vertical plate (501) and the second vertical plate (502); the first vertical plate (501) and the second vertical plate (502) are respectively arranged in contact with two side surfaces of the base (5).

5. A forging die for easy demoulding according to claim 4, characterized in that: Two slide rails (503) are arranged in parallel on the upper surface of the base (5), and the slide rails (503) are perpendicular to the first vertical plate (501).

6. A forging die for easy demoulding according to claim 2, characterized in that: Two inverted slide grooves (10) are respectively provided at the bottom of the first lower die base (6) and the second lower die base (7), and the slide grooves (10) are adapted to the slide rails (503).

7. A forging die for easy demoulding according to claim 1, characterized in that: A lower die cavity (1101) is provided on the upper portion of the lower die (11) body.

8. The forging die for easy demoulding according to claim 1, characterized in that: A forging cylinder (2) is mounted on the top plate (1); a piston rod of the forging cylinder (2) passes through the top plate (1) and is connected to the top of an upper die seat (3); and the upper die (4) is mounted on the lower part of the upper die seat (3).

9. A forging die for easy demoulding according to claim 7, characterized in that: The lower die (11) is provided with a through hole communicating with the lower die cavity (1101), and a push rod mechanism (1102) is provided in the through hole.

10. A forging die for easy demoulding according to claim 9, characterized in that: An upper die bore (401) is provided at the lower part of the upper die (4) body, and the mouth of the upper die bore (401) is consistent in size and shape with the mouth of the lower die bore (1101).

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