A forging bidirectional pier head tooling

Abstract

The present invention discloses a bidirectional pier head tooling for forgings, comprising an outer die sleeve, wherein a conical inner die body is movably placed in the outer die sleeve, the inner die body is composed of two symmetrically assembled inverted conical half-die cores, and the two half-die cores are both movably close to the inverted conical groove in the outer die sleeve, a die cavity is formed between the two half-die cores, the upper port and the lower port of the die cavity are exposed from the upper and lower ends of the outer die sleeve respectively, a pier head groove is provided on the upper and lower sides of the die cavity respectively, the upper port of the die cavity is plugged with an upper ejector rod, and the lower port of the die cavity is plugged with a lower ejector rod. The present invention forms a special half-die structure by arranging an outer die sleeve, two half-die cores, an upper ejector rod and a lower ejector rod, so that only one-way pressure is required during the forging process to achieve double-head pier roughing of the forging in one fire, solving the problem that the current double-head pier roughing needs to rely on horizontal forging equipment, so that most of the existing vertical forging equipment can meet the requirements and has a wider range of applications.

Description

Technical Field

[0001] The invention relates to the technical field of forging pier head processing, in particular to a forging bidirectional pier head tooling. Background Art

[0002] Forging head processing is an important metal forming process, which is mainly used to manufacture forgings with head structures. It uses a mold to locally upset the heated metal blank to form the required head shape.

[0003] At present, the one-way pier head of forgings can generally be achieved by simple tooling such as a material tray and forged through vertical forging equipment. However, in order to achieve a two-way pier head in one fire, special equipment such as a horizontal forging is often required. However, the application range of such equipment is relatively narrow and it is not common in most forging manufacturers.

[0004] Therefore, we propose a forging bidirectional pier head tooling to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a forging bidirectional pier head tooling to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A forging bidirectional pier head tooling comprises an outer die sleeve, wherein a conical inner die body is movably placed in the outer die sleeve, and the inner die body is composed of two symmetrically assembled inverted conical half die cores, and the two half die cores are both movably close to the inverted conical groove in the outer die sleeve, and a die cavity is formed between the two half die cores, and the upper and lower ports of the die cavity are respectively exposed from the upper and lower ends of the outer die sleeve, and a pier head groove is respectively provided on the upper and lower sides of the die cavity, and an upper ejector rod is inserted into the upper port of the die cavity, and a lower ejector rod is inserted into the lower port of the die cavity. After the upper ejector rod is pressed downward into the inner die body, the lower ejector rod is pressed upward into the inner die body to realize double-head piercing of the forging.

[0008] In a further embodiment, the upper and lower end surfaces of the outer mold sleeve and the inner mold body are flush with each other.

[0009] In a further embodiment, the pressure plate of the upper ejector pin is larger than the upper opening of the half mold core, and the pressure plate of the lower ejector pin is larger than the lower opening of the half mold core.

[0010] In a further embodiment, a mechanical clamp is provided outside the outer mold sleeve, and the mechanical clamp includes a pair of clamping rods and a pair of pads. The clamping rods are clamped on both sides of the outer mold sleeve, and a ball screw module is installed at the rear end of the pair of clamping rods. The pad is placed under the outer mold sleeve, and a push rod is connected to the rear end of the pad. A connecting rod is hinged between the push rod and the clamping rod through a hinge shaft. A bracket is slidably connected under the push rod, and a telescopic part 1 is installed under the bracket. The telescopic part 1 is supported and fixed by a mounting frame, and a telescopic part 2 for driving the push rod to move horizontally is also installed on the rear side of the mounting frame. A support plate is installed under the telescopic part 2, and the support plate is vertically slidably connected to the mounting frame.

[0011] In a further embodiment, the upper edge of the pad protrudes from the upper edge of the push rod.

[0012] In a further embodiment, a through slot is further provided on the mounting frame, and the output shaft of the second telescopic member passes through the interior of the through slot.

[0013] In a further embodiment, a sliding groove is provided in the push rod, and a hinge shaft for connecting the push rod and the connecting rod slides through the interior of the sliding groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention forms a special half die structure by arranging an outer die sleeve, two half die cores, an upper ejector rod and a lower ejector rod, so that only unidirectional pressure is required during the forging process to achieve double-end roughing of the forging in one fire, solving the problem that the current double-end roughing processing needs to rely on horizontal forging equipment, so that most of the existing vertical forging equipment can meet the requirements and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the outer mold sleeve and the half mold core after half-cut;

[0018] Figure 3 This is a structural schematic diagram of the upper ejector rod in the pressed-in state of the present invention;

[0019] Figure 4 This is a structural schematic diagram of the present invention in a state where the lower ejector pin is pressed in;

[0020] Figure 5 This is a schematic structural diagram of the state of the flip die after forging.

[0021] In the figure: 1. Outer mold sleeve; 2. Half mold core; 21. Pier head groove; 3. Upper push rod; 4. Lower push rod; 5. Clamping rod; 6. Spacer; 7. Push rod; 8. Connecting rod; 9. Articulated shaft; 10. Ball screw module; 11. Bracket; 12. Telescopic part 1; 13. Mounting frame; 14. Support plate; 15. Telescopic part 2. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be understood that terms such as "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are used solely to facilitate and simplify the description of the present invention and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-2A forging bidirectional pier head tooling includes an outer die sleeve 1, an inverted conical groove extending vertically through the outer die sleeve 1, a tapered inner die body movably placed in the inverted conical groove, and the inner die body is composed of two symmetrically assembled inverted conical half-die cores 2, and the two half-die cores 2 are both movably attached to the inverted conical groove in the outer die sleeve 1, a die cavity is formed between the two half-die cores 2, the upper and lower ports of the die cavity are exposed from the upper and lower ends of the outer die sleeve 1 respectively, and the upper and lower sides of the die cavity are respectively provided with There is a pier head groove 21, the upper port of the die cavity is plugged with an upper push rod 3, and the lower port of the die cavity is plugged with a lower push rod 4. During forging, a pad is first set under the outer die sleeve 1, and the vertical forging machine first punches the upper push rod 3 so that when the upper push rod 3 is pressed into the inner die body, the lower push rod 4 will not be pressed into the inner die body. Then, the pad set under the outer die sleeve 1 is removed, and the upper push rod 3 is continued to be punched. The bottom of the lower push rod 4 is subjected to reverse force, that is, it is pressed upward into the inner die body, thereby realizing bidirectional pier head processing of the forging.

[0026] Specifically, the upper and lower end surfaces of the outer mold sleeve 1 and the inner mold body are flush with each other. At the same time, the pressure plate size of the upper push rod 3 is larger than the upper end opening size of the half mold core 2, and the pressure plate size of the lower push rod 4 is larger than the lower end opening size of the half mold core 2, so that after the upper push rod 3 and the lower push rod 4 are pressed in, the pressure plate is tightly attached to the upper and lower end surfaces of the inner mold body.

[0027] See also Figure 3-5 In order to facilitate forging processing on the fast forging machine, a mechanical clamp is provided outside the outer die sleeve 1, which includes a pair of clamping rods 5 and a pair of pads 6. The clamping rods 5 are used to clamp on both sides of the outer die sleeve 1, and a ball screw module 10 is installed at the rear end of the clamping rods 5. Specifically, the ball screw module 10 includes a screw and a pair of ball nuts. The two clamping rods 5 are fixed to the ball nuts respectively, and the screw is a double-headed screw with two opposite and symmetrical thread directions. A driving motor is also connected to the end of the screw so that when the screw rotates, the ball nuts drive the two clamping rods 5 to move closer or farther away to clamp or loosen the outer die sleeve 1. When clamping, the outer die sleeve 1 is limited to facilitate forging. The pads 6 are used to cushion Below the outer mold sleeve 1, it acts as a cushion, and the rear end of the cushion block 6 is connected to a push rod 7, and a connecting rod 8 is hinged between the push rod 7 and the clamping rod 5 through a hinge shaft 9. A bracket 11 is slidably connected under the push rod 7, and a telescopic part 12 is installed under the bracket 11. The telescopic part 12 is supported and fixed by a mounting frame 13, and a telescopic part 2 15 for driving the push rod 7 to move horizontally is also installed on the rear side of the mounting frame 13. A support plate 14 is installed under the telescopic part 2 15, and the support plate 14 is vertically slidably connected to the mounting frame 13 so that when the push rod 7 follows the telescopic part 12 to rise and fall, the support plate 14 can rise and fall synchronously. At the same time, when the push rod 7 follows the telescopic part 2 15 to move horizontally, it will slide in the telescopic part 2 15.

[0028] When used specifically, the telescopic member can be a pneumatic cylinder or a hydraulic cylinder but is not limited thereto. During the initial forging, the pad 6 is placed under the outer die sleeve 1 (e.g. Figure 3As shown), after the upper ejector rod 3 is pressed into the inner mold body, the telescopic member 2 15 is controlled to retract, thereby pulling the cushion block 6 out from under the outer mold sleeve 1 through the push rod 7. At the same time, the telescopic member 12 is extended, driving the push rod 7 and the cushion block 6 to rise, without affecting the pressing operation of the lower ejector rod 4 (as shown). Figure 4 As shown), when the outer mold sleeve 1 needs to be dumped, the control pad 6 moves to hook the corner of the outer mold sleeve 1 (as shown Figure 5 shown).

[0029] Specifically, the upper edge of the cushion block 6 protrudes from the upper edge of the push rod 7, so that an angle is formed between the cushion block 6 and the push rod 7, which is convenient for hooking the bottom corner of the outer mold sleeve 1 when tilting the outer mold sleeve 1.

[0030] A through slot is further provided on the mounting frame 13 , and the output shaft of the second telescopic member 15 passes through the interior of the through slot, so as to facilitate the up and down movement of the outer mold sleeve 1 .

[0031] A sliding groove is provided in the push rod 7, and the hinge shaft 9 for connecting the push rod 7 and the connecting rod 8 slides through the interior of the sliding groove, so that when the clamping rod 5 is clamped or released, the hinge shaft 9 can extend and slide in the sliding groove along the clamping or release direction of the clamping rod 5.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0033] 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 narrative method 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 forging bidirectional pier head tooling, comprising an outer die sleeve (1), characterized in that: A conical inner mold body is movably placed in the outer mold sleeve (1), and the inner mold body is composed of two symmetrically assembled inverted conical half mold cores (2), and the two half mold cores (2) are both movably close to the inverted conical groove in the outer mold sleeve (1), and a mold cavity is formed between the two half mold cores (2), and the upper and lower ports of the mold cavity are exposed from the upper and lower ends of the outer mold sleeve (1) respectively. A pier head groove (21) is provided on the upper and lower sides of the mold cavity respectively, and an upper ejector rod (3) is inserted into the upper port of the mold cavity, and a lower ejector rod (4) is inserted into the lower port of the mold cavity. After the upper ejector rod (3) is pressed downward into the inner mold body, the lower ejector rod (4) is then pressed upward into the inner mold body, thereby realizing double-headed piering of the forging; The outer mold sleeve (1) is provided with a mechanical clamping claw, which includes a pair of clamping rods (5) and a pair of pads (6). The clamping rods (5) are clamped on both sides of the outer mold sleeve (1), and the rear ends of the pair of clamping rods (5) are installed with a ball screw module (10). The pads (6) are padded under the outer mold sleeve (1), and the rear ends of the pads (6) are connected with a push rod (7). The push rod (7) and the clamping rod (5) are hinged with a connecting rod (8) through a hinge shaft (9). The push rod (7) is slidably connected with a bracket (11), and a telescopic part (12) is installed under the bracket (11). The telescopic part (12) is supported and fixed by a mounting frame (13), and a telescopic part (15) for driving the push rod (7) to move horizontally is also installed on the rear side of the mounting frame (13). A support plate (14) is installed under the telescopic part (15), and the support plate (14) is vertically slidably connected to the mounting frame (13).

2. A forging bidirectional pier head fixture according to claim 1, characterized in that: The upper and lower end surfaces of the outer mold sleeve (1) and the inner mold body are flush with each other.

3. The forging bidirectional pier head fixture according to claim 1, characterized in that: The size of the pressure plate of the upper ejector rod (3) is larger than the size of the upper opening of the half mold core (2), and the size of the pressure plate of the lower ejector rod (4) is larger than the size of the lower opening of the half mold core (2).

4. The forging bidirectional pier head fixture according to claim 1, characterized in that: The upper edge of the cushion block (6) protrudes from the upper edge of the push rod (7).

5. The forging bidirectional pier head fixture according to claim 1, characterized in that: A through slot is also provided on the mounting frame (13), and the output shaft of the second telescopic member (15) passes through the interior of the through slot.

6. The forging bidirectional pier head fixture according to claim 1, characterized in that: A sliding groove is provided in the push rod (7), and a hinge shaft (9) for connecting the push rod (7) and the connecting rod (8) slides through the interior of the sliding groove.

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