Blind opening punching tool for gate valve forge piece
By designing tooling for gate valve forgings, and combining it with a sprue and punch die, the stability and uniformity of punching blind holes in branch pipe sections were solved, ensuring the quality and machining allowance of the forgings. This method is particularly suitable for large-size forgings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGYIN ZHONGYUE MASCH FORGING CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-05-19
AI Technical Summary
In the forging process of gate valve forgings, it is difficult to punch blind holes on the branch pipe section, which can easily lead to problems such as insufficient length, end face folding, and cracks. Existing tooling designs are insufficient to solve these problems.
Design a tooling that includes a sprue, a punch die, a reversing seat, and a pull rope. The sprue, in conjunction with the punch die, forms a branch pipe section on the forging. The sprue is used to perform a blind punching process to ensure the stability and uniformity of the punching. The reversing seat and pull rope are used to clamp and flip the forging to prevent end face defects.
It achieves stable forming and uniform punching of branch pipe sections, avoids end face collapse and cracks, improves the quality of forgings and machining allowance, and is particularly suitable for large-size forgings.
Smart Images
Figure CN224254121U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of gate valve forging technology, and in particular relates to a tooling for punching blind joints in gate valve forgings. Background Technology
[0002] One of the difficulties in the forging process of existing gate valve forgings is how to punch blind holes in the branch pipe section. The main problem is that the depth of the blind hole is relatively deep, making the operation difficult. Considering the plastic deformation of the metal in the hot state, if the flat square is directly drawn without the help of a tooling punch, and then the blind hole is punched with a tooling punch, followed by the marking of the part number, and then the flat square is drawn to a circle with a punch, many problems will occur. For example, the length of the circle of the branch pipe section cannot be met, folds and cracks are prone to appear on the drawn end face, and phenomena such as incomplete forging and porosity are likely to occur.
[0003] Therefore, designing a punching tool that can solve the above problems is a problem that needs to be solved by those working in this field. Summary of the Invention
[0004] The purpose of this utility model is to provide a tooling for punching blind ends for gate valve forgings. Through the design of the sprue and the punch die, it can not only be used for forming the branch pipe section on the forging, but also the punching blind end process is carried out in the sprue. This can ensure the stability and uniformity of the punching, ensuring that the forging is free of porosity and has a more uniform forging structure. It can also ensure that the length of the branch pipe has sufficient machining allowance, and the end face is protected by the sprue to prevent defects such as edge collapse and cracks from appearing on the end face, thus ensuring the improvement of the quality of the forging.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model is a punching tool for gate valve forgings, including a punch die, a sprue, a billet body and a reversing seat;
[0007] The drain plate has a branch pipe forming port at its axis, a clamping groove in the middle of its peripheral side, and several lifting rings on opposite sides of its peripheral side.
[0008] The reversing seat is a disc-shaped plate. Several pull ropes are fixed on both sides of the top surface of the reversing seat. The pull ropes are steel cables or steel chains. One end of the pull rope is provided with a self-locking hook connected to the lifting ring.
[0009] The billet body includes an integrally connected billet base and a branch pipe billet;
[0010] The blank holder is positioned between the reversing seat and the drain plate, the branch pipe blank is positioned inside the branch pipe forming port, the branch pipe blank has a blind opening, and the end of the punch die is positioned inside the blind opening.
[0011] The blank holder has a rectangular structure, and several pull ropes on both sides of the reversing seat are respectively arranged on both sides of the blank holder in the width direction.
[0012] Furthermore, the diameter of the reversing seat is larger than that of the blank seat, and the reversing seat is provided with lifting lugs on its peripheral side.
[0013] Furthermore, the punch mold has a conical rod structure, and the end edge of the punch mold is provided with rounded corners.
[0014] Furthermore, the clamping groove is arranged around the periphery of the drain plate, and the clamping groove and the lifting ring on the drain plate are misaligned.
[0015] Furthermore, the branch pipe forming port of the drain plate is provided with an inner rounded corner, and the end of the drain plate with the inner rounded corner faces the blank seat.
[0016] This utility model has the following beneficial effects:
[0017] 1. This utility model, through the design of the sprue plate in conjunction with the punch die, can not only be used for forming the branch pipe section on the forging, but also for punching the blind end in the sprue plate. This ensures the stability and uniformity of the punching, guaranteeing that the forging is free of porosity and has a more uniform forging structure. It also ensures that the length of the branch pipe has sufficient machining allowance, and the end face is protected by the sprue plate to prevent defects such as edge collapse and cracks, thus ensuring the improvement of the forging quality.
[0018] 2. This utility model, through the design of the reversing seat and the pull rope, can connect with the drain plate, thereby clamping the forging and integrating the reversing seat, drain plate, and forging into one unit. This ensures that the drain plate can be flipped and reversed without disassembly, ensuring its presence in the forming of the branch pipe section and the blind end punching process, and ensuring that its position remains unchanged. This avoids the problems of needing to reposition after repositioning and the complexity and difficulty of operation in the process. It is especially effective for large-sized forgings, ensuring the forming effect of the branch pipe section and the blind end, and improving the quality of the forging.
[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the structure of a punching blind end tool for a gate valve forging according to the present invention;
[0022] Figure 2 This is a cross-sectional view of the structure during the forming of the branch pipe blank;
[0023] Figure 3 A cross-sectional view of the structure after the reversing seat, blank body and sprue are integrated into one unit;
[0024] Figure 4 for Figure 3 A cross-sectional view of the structure after being flipped upside down and moved below the punch die;
[0025] Figure 5 This is a cross-sectional view of the structure during the punching of blind joints on the branch pipe blank.
[0026] The attached diagram lists the components represented by each number as follows:
[0027] 1-Punch mold, 2-Slot plate, 3-Blank body, 4-Reversing seat, 5-Pull rope, 201-Branch forming port, 202-Clamping groove, 203-Lifting ring, 301-Blank seat, 302-Branch blank, 303-Blind opening, 501-Self-locking hook. Detailed Implementation
[0028] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0029] Please see Figure 1-5 As shown, this utility model is a punching tool for gate valve forgings, including a punch die 1, a sprue 2, a billet body 3, and a reversing seat 4;
[0030] The sluice plate 2 has a branch pipe forming port 201 at the axis, a clamping groove 202 in the middle of the side of the sluice plate 2, and several lifting rings 203 on opposite sides of the side of the sluice plate 2.
[0031] The reversing seat 4 is a disc-shaped plate. Several pull ropes 5 are fixed on both sides of the top surface of the reversing seat 4. The pull ropes 5 are steel cables or steel chains. One end of the pull rope 5 is equipped with a self-locking hook 501 connected to the lifting ring 203.
[0032] The billet body 3 includes an integrally connected billet base 301 and branch pipe billet 302;
[0033] The blank holder 301 is positioned between the reversing seat 4 and the drain plate 2. The branch pipe blank 302 is positioned inside the branch pipe forming port 201. The branch pipe blank 302 is provided with a blind opening 303. The end of the punch mold 1 is positioned inside the blind opening 303.
[0034] The blank holder 301 has a rectangular structure, and several pull ropes 5 on both sides of the reversing seat 4 are respectively set on both sides of the width direction of the blank holder 301.
[0035] The reversing seat 4 has a larger diameter than the blank seat 301, and the reversing seat 4 is provided with lifting lugs on its circumferential sides.
[0036] Among them, such as Figure 4-5 As shown, the punch mold 1 has a conical rod structure, and the end edge of the punch mold 1 is provided with rounded corners.
[0037] Among them, such as Figure 1 As shown, the clamping groove 202 is arranged around the side of the sluice plate 2, and the clamping groove 202 and the lifting ring 203 on the sluice plate 2 are misaligned.
[0038] Among them, the branch pipe forming port 201 of the sprue 2 is provided with an inner rounded corner, and the end of the sprue 2 with the inner rounded corner faces the blank seat 301.
[0039] The working principle of this utility model is as follows:
[0040] After repeated upsetting, drawing, flattening, and leveling, the gate valve forging takes on a roughly rectangular block structure. The forging is then moved onto the drain plate 2. Figure 2 As shown, local upsetting is performed to form a branch tube billet 302 on the billet body 3;
[0041] Subsequently, the preheated reversing seat 4 is hoisted onto the top of the billet holder 301 of the billet body 3, as follows. Figure 3 As shown, the pull rope 5 and the self-locking hook 501 are then connected to the lifting ring 203 by tools, so that the reversing seat 4, the billet body 3 and the slotted plate 2 are integrated into one unit;
[0042] By manipulating the clamping slot 202 of the punch plate 2, the reversing seat 4, the blank body 3, and the punch plate 2 can be flipped and moved as a whole to below the punch die 1. Figure 4 As shown;
[0043] Finally, the blind end 303 is formed on the branch pipe blank 302 using the punch die 1, such as... Figure 5 As shown;
[0044] After the overall molding is completed, the connection of the self-locking hook 401 is released, and the slotted plate 2 and the reversing seat 4 are removed respectively, so that the billet can be moved to the next process.
[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0046] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A tooling for punching blind joints in gate valve forgings, characterized in that: It includes a punch die (1), a slotted plate (2), a blank body (3), and a reversing seat (4); The drain plate (2) has a branch pipe forming port (201) at the axis, a clamping groove (202) in the middle of the peripheral side of the drain plate (2), and several lifting rings (203) on opposite sides of the peripheral side of the drain plate (2). The reversing seat (4) is a disc-shaped plate. Several pull ropes (5) are fixed on both sides of the top surface of the reversing seat (4). The pull ropes (5) are steel cables or steel chains. One end of the pull rope (5) is provided with a self-locking hook (501) connected to the lifting ring (203). The billet body (3) includes an integrally connected billet base (301) and branch pipe billet (302); The blank holder (301) is located between the reversing seat (4) and the drain plate (2), the branch pipe blank (302) is located inside the branch pipe forming port (201), the branch pipe blank (302) is provided with a blind opening (303), and the end of the punch mold (1) is located inside the blind opening (303); The blank holder (301) has a rectangular structure, and several pull ropes (5) on both sides of the reversing seat (4) are respectively set on both sides of the width direction of the blank holder (301).
2. The tooling for punching blind joints in gate valve forgings according to claim 1, characterized in that, The diameter of the reversing seat (4) is larger than that of the blank seat (301), and the reversing seat (4) is provided with lifting ears on its peripheral side.
3. The tooling for punching blind joints in gate valve forgings according to claim 1, characterized in that, The punch mold (1) has a conical rod structure, and the end edge of the punch mold (1) is provided with rounded corners.
4. The tooling for punching blind joints in gate valve forgings according to claim 1, characterized in that, The clamping groove (202) is arranged around the side of the drain plate (2), and the clamping groove (202) and the lifting ring (203) on the drain plate (2) are misaligned.
5. A tooling for punching blind joints in gate valve forgings according to claim 1, characterized in that, The branch pipe forming port (201) of the drain plate (2) has an inner rounded corner at one end, and the end of the drain plate (2) with the inner rounded corner faces the blank seat (301).