A kind of left and right shell blank production is used in slotting type forging device

Abstract

The application relates to the technical field of valve manufacturing, and discloses a rolling groove type forging device for valve left and right shell blank production, which comprises a forging machine body, a punching column and a rolling roller piece. The punching column can slide, lift and rotate through a driving mechanism, and the internal cavity part of the valve shell is coarsely punched through the punching column. The rolling roller piece can slide and expand in an eccentric state on the punching column, and the rolling roller piece and the punching column constitute a synchronous motion structure. The internal cavity part of the valve shell is finely expanded through the rolling roller piece. The rolling groove type forging device for valve left and right shell blank production integrates two machining processes of coarse punching and fine expansion into one, adopts a composite rolling groove machining mode, synchronously forges the cavity in the valve shell during valve shell forging, can better retain the metal flow lines in the valve shell, and guarantees the stability of product quality.

Description

Technical Field

[0001] This invention relates to the field of valve manufacturing technology, and more particularly to the field of valve forging manufacturing technology, specifically a groove forging device for producing valve left and right shell blanks. Background Technology

[0002] Valves are key control devices in fluid transport systems used to open or close pipelines, regulate the direction of fluid flow, and control fluid flow rate and pressure. Split valves typically consist of two core components, a left valve body and a right valve body, which are sealed together by fasteners such as bolts to form a complete valve body. Forging is a commonly used process for forming valve body blanks in valve manufacturing. During the forging process, pressure is applied to the heated metal blank to cause it to plastically deform, thereby making the internal structure of the metal blank dense and improving the strength and toughness of the valve body.

[0003] For example, Chinese patent CN119927115B discloses an integral forging device for high-temperature and high-pressure valve bodies, including a forging machine, a worktable inside the forging machine, and forging dies on the worktable. The forging dies include an upper die attached to the hammer end in the forging machine and a lower die set on the worktable.

[0004] Based on the aforementioned patents and in conjunction with existing solutions and actual production and processing, the current forging equipment for valve body blank production still has some problems, such as: In the aforementioned patent, the forging die is divided into an upper die and a lower die. The upper die is installed at the hammer end of the forging machine, and the lower die is installed on the worktable of the forging machine. The air hammer of the forging machine drives the upper die to move downward and forge, forming a complete valve body in the lower die. However, the forging process in the aforementioned patent can only form a solid valve body blank. Similar to the forging method in the aforementioned patent, the existing common valve body forging process can only form a complete and solid valve body during forging. It cannot simultaneously forge the internal cavity of the valve body. The internal cavity of the valve body needs to be formed by removing a large amount of excess material through machining such as drilling and boring, which generates a lot of waste and leads to material waste.

[0005] Therefore, we propose a grooved forging device for producing valve left and right shell blanks to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a grooved forging device for producing valve left and right shell blanks, so as to solve the problem that the existing common forging process mentioned in the background art can only form a complete and solid valve shell, and cannot simultaneously forge the internal cavity of the valve shell. The internal cavity of the valve shell needs to be formed by machining, which results in a large amount of waste material during machining, thus causing material waste.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a grooved forging apparatus for producing valve left and right shell blanks, comprising: The forging machine body has a secondary mold and a main mold respectively mounted on the movable crossbeam and the worktable in the forging machine body. The metal billet is forged into a valve body through the secondary mold and the main mold. Also includes: The punching column is connected to the die inlet hole at the junction of the main mold and the auxiliary mold by an interlocking manner. The punching column can slide, lift and rotate by a drive mechanism. The punching column is used to perform rough punching on the internal cavity of the valve body. The roller component can slide and unfold eccentrically on the punching column, and the roller component follows the punching column to form a synchronous movement structure. The roller component is used to perform fine reaming of the internal cavity of the valve body.

[0008] Preferably, the main mold has a clearance hole that provides sliding space for the punching post that slides excessively, and the clearance hole is connected to the punching post by an insertion method. A plug is inserted into the clearance hole for sealing, and the plug is driven by the first hydraulic cylinder to form a sliding opening structure or a sliding closing structure in the clearance hole.

[0009] Preferably, the driving mechanism includes a main platform and a secondary platform. The main platform is driven by a second hydraulic cylinder to form a horizontal sliding structure on the worktable in the forging machine body, and the main platform drives the secondary platform to form a synchronous sliding structure. The secondary platform is driven by a third hydraulic cylinder to form a vertical lifting structure on the main platform.

[0010] Preferably, the auxiliary platform is rotatably connected to the punching column, a driven gear is fixedly connected to the punching column, and the driven gear is meshed with the driving gear. The driving gear is driven by a hydraulic motor to form a rotating structure on the auxiliary platform.

[0011] Preferably, a connecting push rod is slidably connected inside the punching column, and a main pushing block is integrally provided on the connecting push rod. The inclined sidewall of the main pushing block is connected to the inclined sidewall of the auxiliary pushing block by a sliding contact method, and the auxiliary pushing block is integrally provided inside the roller component. The roller component forms a sliding structure on the punching column, and a first spring is installed at the sliding connection between the two.

[0012] Preferably, the connecting rod is connected to the output end of the fourth hydraulic cylinder by pressing, and the fourth hydraulic cylinder is fixedly mounted on the auxiliary platform.

[0013] Preferably, a limiting mechanism for locking the connecting push rod is provided at the sliding connection between the connecting push rod and the punching column. The limiting mechanism is used to control the gradual sliding of the connecting push rod, and the gradually sliding connecting push rod drives the rolling roller to gradually slide and unfold in sequence. The limiting mechanism includes a ratchet groove on the push rod and a pawl locking block that is telescopically slidably connected in the punching column. The pawl locking block is connected to the ratchet groove by an engaging manner, and a second spring is installed at the sliding connection between the pawl locking block and the punching column.

[0014] Preferably, the punched column is provided with an unlocking frame for unlocking the limiting mechanism. The unlocking frame is driven by a fourth hydraulic cylinder to form a sliding structure in the punched column, and a third spring is installed at the sliding connection between the two. The protrusion in the unlocking frame is connected to the inclined groove wall in the pawl lock block by a pressing and sliding method. The output end of the fourth hydraulic cylinder forms a rotating structure on the unlocking frame, and the limiting ring on the output end of the fourth hydraulic cylinder is connected to the unlocking frame by a pressing and pushing method.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: the grooving forging device for producing valve left and right shell blanks integrates two processing steps of rough punching and fine reaming into one, and adopts a composite grooving processing method to simultaneously forge the cavity inside the valve shell during valve shell forging, which can better preserve the metal flow lines inside the valve shell and ensure the stability of product quality. 1. Controlled by the drive mechanism, the punching column can perform horizontal sliding and rotational movements. The punching column performs rough punching on the internal cavity of the valve body. The rolling roller can slide eccentrically on the punching column and follow the punching column to perform fine reaming on the internal cavity of the valve body. In the valve body forging process, the internal cavity of the valve body is formed simultaneously by forging. This is different from the existing common forging process that can only forge solid valve bodies. It can remove a large amount of excess material in advance, making the forged valve body blank closer to the finished valve body. The valve body blank obtained has higher precision, greatly reducing the blank allowance in subsequent finishing and avoiding the large amount of chips in subsequent machining, which leads to material waste. Furthermore, when processing the internal cavity of the valve body, rough punching is first performed by punching with a punching column, followed by fine reaming by rolling with rollers. This integrates the two processing steps of rough punching and fine reaming into one, forming a composite grooving structure. The composite grooving processing method can better preserve the internal metal flow lines of the valve body, avoid the occurrence of internal looseness or defects, and ensure the stability of product quality. Furthermore, by using punching columns and rolling rollers, a composite grooving process of rough punching followed by fine reaming is adopted to achieve continuous one-time forming, reducing the transfer and repeated heating of the valve body between multiple processes, optimizing the work process, and thus effectively improving production efficiency. 2. With the assistance of the limiting mechanism, the connecting rod is controlled to slide gradually in sequence. Through the anti-sliding cooperation between the main push block and the auxiliary push block, the rollers are driven to slide gradually on the punching column and gradually expand eccentrically. The gradually expanded rollers gradually expand the internal cavity of the valve body, so that the metal flow lines are distributed in the circumferential direction, the structure is more dense and uniform, and the processing quality is guaranteed. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a front cross-sectional view of the complete valve body cavity formed by the combination of the punched column, the main mold, and the auxiliary mold of the present invention. Figure 3 This is a side view of the connection between the main platform and the auxiliary platform in the drive mechanism of the present invention. Figure 4 This is a front view cross-sectional diagram of the main platform of the present invention being driven by the second hydraulic cylinder to slide horizontally. Figure 5 This is a schematic diagram of the vertical lifting and lowering structure of the auxiliary platform of the present invention driven by the third hydraulic cylinder, viewed from below. Figure 6 This is a front view cross-sectional diagram of the perforated column of the present invention, which is driven to rotate by a hydraulic motor. Figure 7 This is a front cross-sectional view of the eccentric sliding unfolding structure of the roller component of the present invention on the punched column; Figure 8 This is a front view of the disassembled roller component and punching column of the present invention; Figure 9 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 10This is a frontal cross-sectional view of the connection between the pawl lock block and the unlocking frame of the present invention.

[0017] In the diagram: 1. Forging machine body; 2. Auxiliary mold; 3. Main mold; 4. Punching column; 5. Die inlet hole; 6. Drive mechanism; 7. Roller; 8. Clearance hole; 9. Plug; 10. First hydraulic cylinder; 11. Main platform; 12. Auxiliary platform; 13. Second hydraulic cylinder; 14. Third hydraulic cylinder; 15. Driven gear; 16. Drive gear; 17. Hydraulic motor; 18. Connecting push rod; 19. Main push block; 20. Auxiliary push block; 21. First spring; 22. Fourth hydraulic cylinder; 23. Limiting mechanism; 24. Ratchet groove; 25. Pawl lock block; 26. Second spring; 27. Unlocking frame; 28. Third spring. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Example

[0019] This invention provides a technical solution: a grooved forging device for producing valve left and right shell blanks. When forging valve shells, only a complete and solid valve shell can be formed; the internal cavity of the valve shell cannot be formed simultaneously. This single forging method requires subsequent, more complex machining to assist in forming, resulting in a large amount of waste and material waste. The invention uses a drive mechanism 6 to operate the punching column 4 and the rolling roller 7. The punching column 4 performs rough punching on the internal cavity of the valve shell, and the rolling roller 7 performs fine reaming on the internal cavity, simultaneously forming the internal cavity of the valve shell during forging.

[0020] This technical solution: Please refer to Figures 1-8 A grooved forging device for producing valve left and right shell blanks includes a forging machine body 1. The forging machine body 1 is mainly composed of core components such as a workbench, guide column, top crossbeam, working cylinder and movable crossbeam (the forging machine body 1 and its working principle are existing technologies and are not described in detail in the accompanying drawings). The movable crossbeam and the workbench in the forging machine body 1 are respectively equipped with a secondary mold 2 and a main mold 3. The metal blank is forged into a valve shell through the secondary mold 2 and the main mold 3. It also includes a punching column 4 and a roller component 7. The punching column 4 is connected to the die inlet hole 5 at the junction of the main mold 3 and the auxiliary mold 2 by an interlocking method. The punching column 4 can slide, lift and rotate by the drive mechanism 6. The punching column 4 is used to perform rough punching on the internal cavity of the valve body. The roller component 7 can slide and unfold on the punching column 4 in an eccentric state. The roller component 7 follows the punching column 4 to form a synchronous movement structure. The roller component 7 is used to perform fine reaming on the internal cavity of the valve body.

[0021] Specifically, in this technical solution, the driving mechanism 6 controls the horizontal sliding movement of the punching column 4, according to... Figure 2 , Figure 3 and Figure 4 As shown, an integrated guide sleeve is horizontally arranged on the lower side of the main platform 11. The guide sleeve is symmetrically arranged about its horizontal central axis. A guide rod is movably inserted in the guide sleeve of the main platform 11, and the guide sleeve forms a sliding structure on the guide rod. After the main platform 11 is installed, the connecting seats at both ends of the guide rod are fixedly connected to the worktable in the forging machine body 1 by bolts. The main platform 11 is positioned in a movable state on the worktable in the forging machine body 1 with the assistance of the guide rod. Since the second hydraulic cylinder 13 is fixedly installed on the worktable in the forging machine body 1 by bolts, and since the main platform 11 is fixedly connected to the output end of the second hydraulic cylinder 13 by bolts after installation, the main platform 11 is driven to perform horizontal reciprocating sliding motion on the worktable in the forging machine body 1 by the extension and retraction operation of the second hydraulic cylinder 13. In addition, the guide rod in the main platform 11 assists the main platform 11 to perform stable horizontal sliding. Since the auxiliary platform 12 is positioned on the main platform 11 under the control of the third hydraulic cylinder 14, and the punching column 4 is positioned on the auxiliary platform 12 under the control of the hydraulic motor 17, when the main platform 11 is driven to slide horizontally, it drives the auxiliary platform 12 on it to slide horizontally synchronously. That is, it controls the punching column 4 to perform horizontal sliding motion on the worktable in the forging machine body 1.

[0022] Specifically, in this technical solution, the driving mechanism 6 controls the vertical lifting and lowering movement of the punching column 4, according to... Figure 2 , Figure 3 and Figure 5 As shown, the four corners of the lower side of the auxiliary platform 12 are vertically provided with integrated guide rods. Since the auxiliary platform 12 is placed on the upper side of the main platform 11, and the guide rods therein can move through the main platform 11, and since the guide rods in the auxiliary platform 12 form a sliding structure in the main platform 11, the auxiliary platform 12 is positioned on the main platform 11 in a movable state with the assistance of the guide rods therein. Since the third hydraulic cylinder 14 is fixedly installed in the middle groove of the main platform 11 by bolts, and since the auxiliary platform 12 is fixedly connected to the output end of the third hydraulic cylinder 14 by bolts after placement, the auxiliary platform 12 is driven to perform vertical lifting and lowering on the main platform 11 by the extension and retraction operation of the third hydraulic cylinder 14. In addition, the guide rod in the auxiliary platform 12 assists the auxiliary platform 12 to perform stable vertical lifting and lowering. Since the punching column 4 is positioned on the auxiliary platform 12 under the control of the hydraulic motor 17, the auxiliary platform 12 drives the punching column 4 to move synchronously, and controls the punching column 4 to move vertically up and down relative to the main mold 3.

[0023] Specifically, in this technical solution, the driving mechanism 6 controls the rotation of the punching column 4, according to... Figure 2 , Figure 4 and Figure 6 As shown, after the hydraulic motor 17 is installed, it is fixedly mounted in the slot cavity of the auxiliary platform 12 by bolts. Since the center of the drive gear 16 is provided with an integrated shaft column, a bearing is fixedly snapped onto the shaft column. After the drive gear 16 is installed, the shaft column and bearing are movably inserted into the auxiliary platform 12. The shaft column is sleeved and fixedly connected to the output end of the hydraulic motor 17 by bolts. When the hydraulic motor 17 is started, it drives the drive gear 16 to rotate on the auxiliary platform 12. Since the end of the punching column 4 facing the main mold 3 is the inward end, and the other end is the outward end, the outward end of the punching column 4 is fixedly connected to a bearing. After the auxiliary platform 12 is connected to the punching column 4, the outward end of the punching column 4, together with the bearing, is movably inserted into the middle position of the auxiliary platform 12, so that the punching column 4 is positioned on the auxiliary platform 12 in a movable state. Since the driven gear 15 has an integrated shaft tube at its center, after the driven gear 15 is installed, the shaft tube is sleeved and fixedly connected to the outward end of the punching column 4 by bolts, and it is meshed with the driving gear 16. When the driving gear 16 is driven to rotate, the meshing action between the driving gear 16 and the driven gear 15 causes the driven gear 15 to drive the punching column 4 to rotate, that is, to control the punching column 4 to rotate on the auxiliary platform 12.

[0024] Specifically, in this technical solution, the metal billet is forged into a valve body using the auxiliary mold 2 and the main mold 3, according to... Figure 1 and Figure 2 As shown, the auxiliary mold 2 is fixedly assembled on the movable crossbeam in the forging machine body 1 by bolts, and the main mold 3 is fixedly assembled on the worktable in the forging machine body 1 by bolts. Since a feeding robot is set on one side of the forging machine body 1 (the feeding robot is existing technology and is not described in detail in the attached drawings of the specification), the heated metal billet is placed in the main mold 3 by the feeding robot before forging, realizing automatic feeding in valve body forging and assisting automated production; The forging machine body 1, consisting of the worktable, guide columns, and top crossbeam, forms the overall frame of the forging machine, connecting and supporting its entire structure. The guide columns are located at the four corners of the worktable. The movable crossbeam is movably connected to the guide columns, ensuring stable sliding operation. The working cylinder is fixedly mounted on the top crossbeam, providing the power required for forging. The movable crossbeam is fixedly connected to the output end of the working cylinder. The working cylinder drives the movable crossbeam to move up and down reciprocally, and the movable crossbeam drives the auxiliary mold 2 to move up and down synchronously. The reciprocating auxiliary mold 2 applies pressure to the metal billet placed in the main mold 3, achieving plastic deformation of the metal billet and forming it into a valve body.

[0025] Meanwhile, in the above technical solutions, according to Figure 1 and Figure 2 As shown, the main mold 3 and the auxiliary mold 2 both integrate the valve left housing cavity and the valve right housing cavity into one piece. When forging is performed by the main mold 3 and the auxiliary mold 2, the valve left housing and the valve right housing can be forged simultaneously, ensuring the consistency of the production cycle of the valve left housing and the valve right housing.

[0026] Specifically, in this technical solution, the internal cavity of the valve body is rough-punched using the punching post 4, according to... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the die inlet hole 5 is opened at the joint of the main mold 3 and the auxiliary mold 2. The die inlet hole 5 is used for the punching post 4 to pass through into the complete valve body mold cavity formed by the combination of the main mold 3 and the auxiliary mold 2. Since the die inlet hole 5 is connected to the mold cavity in the main mold 3 and the mold cavity in the auxiliary mold 2, it corresponds to the center of the complete valve body mold cavity formed by the combination of the main mold 3 and the auxiliary mold 2. That is, when the punching post 4 is performing rough punching, it is performing rough punching at the center position of the internal cavity of the valve body. Since the punching column 4 is cylindrical, and since the driving mechanism 6 can control the horizontal sliding and rotational movement of the punching column 4, when the punching column 4 is driven to slide along the die hole 5 and slide into the complete valve body mold cavity formed by the combination of the main mold 3 and the auxiliary mold 2, the metal blank in the complete valve body mold cavity is rough punched. The punching column 4 rotates synchronously during the punching process to assist in the rough punching process. Since the punching column 4 is mirrored about the vertical centerline of the main mold 3, the corresponding components associated with the punching column 4, such as the die inlet 5, the clearance hole 8, the plug 9, the roller 7, and the drive mechanism 6, are also mirrored. The two punching columns 4 can simultaneously process the internal cavity of the valve's left housing and the internal cavity of the right housing.

[0027] Meanwhile, in the above technical solutions, according to Figure 1 and Figure 2 As shown, since the specifications and dimensions of the die inlet hole 5 are compatible with those of the punching post 4, the punching post 4 and the die inlet hole 5 can fit together after docking. Before the auxiliary mold 2 is closed with the main mold 3, the punching post 4 is pre-inserted into half of the die inlet hole 5 on the main mold 3. After the auxiliary mold 2 is closed with the main mold 3, half of the die inlet hole 5 on the auxiliary mold 2 is stuck on the punching post 4. That is, after the auxiliary mold 2 is closed with the main mold 3, the punching post 4 is inserted into the die inlet hole 5. The punching post 4 seals the die inlet hole 5 to prevent the metal billet from overflowing from the die inlet hole 5 during the forging process. In addition, when the punching post 4 slides through the die hole 5, it also prevents the metal blank from being squeezed into the gap between the two.

[0028] Meanwhile, in the above technical solutions, according to Figure 1 and Figure 2 As shown, after the valve body is forged, the punching column 4 is used to machine the internal cavity of the valve body, and the punching column 4 is kept inserted in the internal cavity of the valve body. The punching column 4 is driven by the drive mechanism 6 to move upward. The punching column 4 carries the forged valve body upward and separates from the main mold 3, and corresponds to the unloading robot. Since the unloading robot is located on the other side of the forging machine body 1 (the unloading robot is existing technology and is not described in detail in the attached drawings of the manual), the formed valve body is taken out from the punching column 4 by the unloading robot after forging, realizing automatic unloading in the valve body forging process and assisting in automated production; In addition, the die inlet hole 5 is located at the joint between the main mold 3 and the auxiliary mold 2. It is separated from the center, with one half on the main mold 3 and the other half on the auxiliary mold 2. When the auxiliary mold 2 is demolded from the main mold 3, the die inlet hole 5 is separated, so that the die inlet hole 5 will not block the punching post 4, and the punching post 4 can easily carry the forged valve body upward.

[0029] Meanwhile, in the above technical solutions, according to Figure 1 and Figure 2 As shown, the punching post 4 needs to perform a through-hole rough punching on the metal blank. Therefore, the punching post 4 will slide excessively in the complete valve body cavity formed by the combination of the main mold 3 and the auxiliary mold 2. The clearance hole 8 is opened on the cavity wall of the main mold 3, and its center is on the same horizontal central axis as the center of the die inlet hole 5. The clearance hole 8 is used to provide sliding space for the punching post 4 to slide excessively. After the punching post 4 slides excessively, it can be inserted into the clearance hole 8. Since the dimensions of the relief hole 8 are compatible with the dimensions of the punching column 4, the punching column 4 and the relief hole 8 can fit together after docking. When the punching column 4 is inserted into the relief hole 8 and the rolling roller 7 performs fine expansion, the metal billet is prevented from being squeezed into the gap between the two. Since the plunger 9 fits into the relief hole 8 after being installed, the plunger 9 is initially in a closed state to seal the relief hole 8. When the auxiliary mold 2 and the main mold 3 are closed for forging, the relief hole 8 is sealed by the plunger 9 to prevent the metal billet from being squeezed into the relief hole 8 during the forging process. Since the first hydraulic cylinder 10 is a double-headed hydraulic cylinder, it is used to synchronously drive the two plungers 9 to move. The plungers 9 form a sliding structure in the relief hole 8. After the first hydraulic cylinder 10 is installed, it is fixedly mounted on the worktable in the forging machine body 1 by bolts. After the plungers 9 are installed, they are fixedly connected to the output end of the first hydraulic cylinder 10 by bolts. Through the contraction operation of the first hydraulic cylinder 10, the plungers 9 are driven to slide open in the relief hole 8, forming a sliding space in the relief hole 8. Conversely, through the extension operation of the first hydraulic cylinder 10, the plungers 9 are driven to reset and slide close in the relief hole 8. In this way, the relief hole 8 and the punching column 4 can achieve automatic opening and closing.

[0030] Specifically, in this technical solution, the internal cavity of the valve body is precision-expanded using the roller component 7, according to... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, after the fourth hydraulic cylinder 22 is installed, it is fixedly mounted on the connecting frame of the auxiliary platform 12 by bolts, and its output end is movably inserted into the column cavity of the punching column 4. The output end of the fourth hydraulic cylinder 22 is connected to the connecting push rod 18 by a pressing method. Since the end of the connecting push rod 18 facing the roller 7 is the inward end, and the other end is the outward end, after the connecting push rod 18 is installed, it is movably inserted into the column cavity of the punching column 4. When the fourth hydraulic cylinder 22 is started to extend and operate, the connecting push rod 18 is pushed to slide in the column cavity of the punching column 4 by the pressing action between the output end of the fourth hydraulic cylinder 22 and the outward end of the connecting push rod 18. Since the roller component 7 is arranged in a cylindrical structure, both sides of the inner end of the punched column 4 are provided with an integrated limiting strip. After the roller component 7 is installed, it is located in the groove cavity of the inner end of the punched column 4, and it is movably sleeved on the inner end of the punched column 4. The limiting strip on the punched column 4 is movably locked on the cavity wall of the roller component 7, so that the roller component 7 is positioned on the punched column 4 in a movable state, and the roller component 7 is restricted to linear sliding on the punched column 4. Since the main pusher block 19 is arranged in an integrated structure on the inner end of the connecting pusher 18, and has an inclined sidewall on the side facing the auxiliary pusher block 20, and since the auxiliary pusher block 20 is arranged in an integrated structure on the cavity wall of the roller component 7, and has an inclined sidewall on the side facing the main pusher block 19, and since the connecting pusher 18 is installed, the inclined sidewall in the main pusher block 19 and the inclined sidewall in the auxiliary pusher block 20 are pressed and connected together, the connecting pusher 18 is driven to slide, and through the pressing and sliding cooperation between the inclined sidewall in the main pusher block 19 and the inclined sidewall in the auxiliary pusher block 20, the roller component 7 is pushed and unfolded on the punched column 4. Since the roller 7 is initially set in a concentric state on the punching column 4, after the roller 7 slides and unfolds on the punching column 4, the roller 7 is set in an eccentric state on the punching column 4. Since a first spring 21 is installed at the sliding connection between the roller component 7 and the punching column 4, the first spring 21 is arranged in an equidistant state. One end of the spring 21 is movably inserted into the spring chamber of the limiting strip in the punching column 4 and presses against the chamber wall. The other end of the spring 21 is movably inserted into the spring chamber in the roller component 7 and presses against the chamber wall. After the roller component 7 slides and unfolds on the punching column 4, the first spring 21 is compressed and undergoes elastic deformation. In the valve body forging process, when processing the internal cavity of the valve body, the punching column 4 first performs rough punching on the internal cavity of the valve body by punching, dispersing the metal blank in the center of the internal cavity and forming an initial slot. The rolling roller 7 slides and unfolds eccentrically on the punching column 4. After the rough punching process, the punching column 4 drives the rolling roller 7 to rotate. The rolling roller 7 then performs fine expansion on the internal cavity of the valve body by rolling expansion. In addition, the punching column 4 can drive the rolling roller 7 to slide horizontally back and forth. During the rolling expansion process, the punching process is carried out simultaneously, combining the rotational rolling and the axial extrusion action. This allows the metal blank to flow circumferentially while also generating axial extrusion flow, which helps to better optimize the metal flow line. Conversely, when the fourth hydraulic cylinder 22 is activated to retract and operate, the output end of the fourth hydraulic cylinder 22 loses its pushing and squeezing effect on the outward end of the connecting push rod 18, providing sliding space for the connecting push rod 18 to return to its original sliding position within the cavity of the punching column 4. By utilizing the elastic deformation and return of the first spring 21, the roller component 7 is driven to slide and close on the punching column 4, and the roller component 7 is restored to its initial concentric state on the punching column 4.

[0031] Meanwhile, in the above technical solutions, according to Figure 2 , Figure 7 and Figure 8 As shown, the two ends of the roller 7 are respectively fitted to the inner side of the groove wall of the punching column 4. When the punching column 4 and the roller 7 are subjected to rough punching, the metal billet is prevented from being squeezed into the gap between them.

[0032] Meanwhile, in the above technical solutions, according to Figure 2 , Figure 7 and Figure 8 As shown, the diameter of the roller 7 is the same as that of the punching column 4. When the punching column 4 and the roller 7 in the initial state are subjected to rough punching, the roller 7 will not hinder the rough punching of the punching column 4. In addition, the roller 7 can also freely pass through the die hole 5. Example

[0033] Based on Embodiment 1, please refer to the following: Figures 9-10 In the technical solution shown, when processing the internal cavity of the valve body, the cavity is formed directly in one step. The metal billet deforms and concentrates within the mold cavity, resulting in excessive local stress. In addition, under unidirectional pressure, the flow path of the metal billet is prone to reverse and convergence, leading to chaotic metal flow lines. To address this problem of one-step forming affecting processing quality, the roller component 7 is controlled to slide and unfold gradually in an eccentric state on the punching column 4. Through the gradually unfolded roller component 7, the internal cavity of the valve body is gradually formed.

[0034] Specifically, in this technical solution, a gradual rolling expansion operation is performed using the gradually unfolding roller component 7, according to... Figure 9 and Figure 10 As shown, the limiting mechanism 23 is mirrored about the horizontal centerline of the connecting rod 18. The fourth hydraulic cylinder 22 drives the connecting rod 18 to slide gradually. The limiting mechanism 23 positions and locks the connecting rod 18 for each gradual slide, so that the roller 7 gradually slides and unfolds on the punching column 4. That is, the eccentric distance of the roller 7 on the punching column 4 gradually increases, thereby realizing the gradual rolling and expanding work. Because the pawl locking block 25 has an integrated limiting disc that extends radially from its center, after the pawl locking block 25 is installed, its limiting disc is movably locked onto the wall of the punching column 4. The pawl end is movably inserted into the ratchet groove 24. Since the ratchet groove 24 is located at the outward end of the connecting push rod 18, and because a second spring 26 is installed at the sliding connection between the pawl locking block 25 and the punching column 4, the second spring 26 is movably sleeved outside the pawl locking block 25. One end of the second spring 26 is movably inserted into the spring chamber of the limiting disc in the pawl locking block 25, pressing against the chamber wall, and the other end is movably inserted into the spring chamber of the punching column 4, pressing against the chamber wall. When the fourth hydraulic cylinder 22 extends and pushes the connecting push rod... When the connecting rod 18 slides inside the punching column 4, the pawl end of the pawl locking block 25 slides along the ratchet block in the ratchet groove 24, causing the pawl locking block 25 to slide and retract inside the punching column 4, and causing the second spring 26 to be compressed and undergo elastic deformation. After the connecting rod 18 slides inside the punching column 4, the elastic deformation of the second spring 26 is used to reset, driving the pawl locking block 25 to slide out inside the punching column 4. Through the locking action between the pawl locking block 25 and the ratchet groove 24, the sliding connecting rod 18 is locked. In addition, the connecting rod 18 slides gradually in sequence. Through the locking action between the pawl locking block 25 and the ratchet groove 24, each slide can also be locked in real time to ensure the stability of the gradual rolling expansion operation. Since the pawl lock block 25 has a slot cavity that allows the transverse frame of the unlocking frame 27 to pass through, and since the unlocking frame 27 has a "U" shaped structure, the two transverse frames correspond to the two limiting mechanisms 23 respectively. The ends of the transverse frames in the unlocking frame 27 are provided with an integrated protrusion. After the unlocking frame 27 is installed, it is movably locked on the column cavity wall of the punching column 4, and the two transverse frames along with the protrusions move through the slot cavities of the two pawl lock blocks 25 respectively. Because a limit ring is sleeved on the output end of the fourth hydraulic cylinder 22 and fixed by bolts, and because the longitudinal frame of the unlocking frame 27 is connected to the output end of the fourth hydraulic cylinder 22 after it is installed, the fourth hydraulic cylinder 22 retracts and works, and through the limit ring on its output end, it pushes and squeezes the longitudinal frame of the unlocking frame 27, causing the unlocking frame 27 to slide in the punched column 4. Because a third spring 28 is installed at the sliding connection between the unlocking frame 27 and the punching column 4, the third spring 28 is symmetrically arranged about the horizontal central axis of the unlocking frame 27. One end of the spring 28 is movably inserted into the spring chamber of the punching column 4 and fixed to the chamber wall by bolts, and the other end of the spring 28 is fixed to the longitudinal frame of the unlocking frame 27 by bolts. After the unlocking frame 27 slides in the punching column 4, the third spring 28 is pulled and undergoes elastic deformation. Conversely, the elastic deformation of the third spring 28 resets the unlocking frame 27, causing it to reset and slide in the punching column 4. Since the protrusion in the unlocking frame 27 has an inclined sidewall, and the groove in the pawl lock block 25 has an inclined groove wall, the protrusion in the unlocking frame 27 and the inclined groove wall in the pawl lock block 25 are connected by a sliding contact. After the unlocking frame 27 is driven to slide, the pawl lock block 25 is pushed to retract through the sliding contact between the inclined sidewall of the protrusion in the unlocking frame 27 and the inclined groove wall in the pawl lock block 25, thereby unlocking the connecting rod 18. That is, the unlocking frame 27 is used for the simultaneous unlocking of the two limiting mechanisms 23. Meanwhile, in the above technical solutions, according to Figure 9 and Figure 10 As shown, the sliding connecting rod 18 is positioned and locked by the limiting mechanism 23. The fourth hydraulic cylinder 22 retracts to release the pushing effect on the connecting rod 18, so that the fourth hydraulic cylinder 22 and the connecting rod 18 lose contact. When the punching column 4 rotates, the fourth hydraulic cylinder 22 will not affect the rotation of the punching column 4, thus avoiding damaging friction between the two.

[0035] Meanwhile, in the above technical solutions, according to Figure 9 and Figure 10 As shown, when the punching column 4 rotates, the unlocking frame 27 can rotate at the output end of the fourth hydraulic cylinder 22, that is, the fourth hydraulic cylinder 22 does not affect the rotation of the punching column 4; In addition, when the fourth hydraulic cylinder 22 is extended and operating, the output end of the fourth hydraulic cylinder 22 slides on the unlocking frame 27, that is, the unlocking frame 27 does not affect the operation of the fourth hydraulic cylinder 22.

[0036] This is the entire working process of the groove forging device used for producing blanks of the left and right valve bodies. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0037] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention; the contents not described in detail in this specification belong to the prior art known to those skilled in the art; in addition, the directional terms such as up, down, left, right, front, and back in the text only represent their relative positions and not absolute positions.

[0038] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A grooved forging apparatus for producing valve left and right shell blanks, comprising: The forging machine body (1) is equipped with a secondary mold (2) and a main mold (3) on the movable crossbeam and the worktable, respectively, and the metal billet is forged into a valve body through the secondary mold (2) and the main mold (3); Its characteristic is that it further includes: The punching column (4) is connected to the die inlet hole (5) at the junction of the main mold (3) and the auxiliary mold (2) by an interlocking manner. The punching column (4) can slide, lift and rotate by the drive mechanism (6). The punching column (4) is used to perform rough punching on the internal cavity of the valve body. The roller component (7) can slide and unfold eccentrically on the punching column (4), and the roller component (7) follows the punching column (4) to form a synchronous motion structure. The roller component (7) is used to perform fine reaming on the internal cavity of the valve body.

2. The grooved forging device for producing valve left and right shell blanks according to claim 1, characterized in that: The main mold (3) is provided with a relief hole (8) that provides sliding space for the punching post (4) that slides excessively. The relief hole (8) is connected to the punching post (4) by insertion. A plug (9) is inserted into the relief hole (8) for sealing. The plug (9) is driven by the first hydraulic cylinder (10) to form a sliding opening structure or a sliding closing structure in the relief hole (8).

3. The grooved forging device for producing valve left and right shell blanks according to claim 1, characterized in that: The drive mechanism (6) includes a main platform (11) and a secondary platform (12). The main platform (11) is driven by a second hydraulic cylinder (13) to form a horizontal sliding structure on the worktable in the forging machine body (1), and the main platform (11) drives the secondary platform (12) to form a synchronous sliding structure. The secondary platform (12) is driven by a third hydraulic cylinder (14) to form a vertical lifting structure on the main platform (11).

4. The grooved forging device for producing valve left and right shell blanks according to claim 3, characterized in that: The secondary platform (12) is rotatably connected to the punching column (4). A driven gear (15) is fixedly connected to the punching column (4), and the driven gear (15) is meshed with the driving gear (16). The driving gear (16) is driven by the hydraulic motor (17) to form a rotating structure on the secondary platform (12).

5. The grooved forging device for producing valve left and right shell blanks according to claim 1, characterized in that: The punched column (4) is slidably connected to a connecting rod (18), and a main pushing block (19) is integrally provided on the connecting rod (18). The inclined side wall of the main pushing block (19) is connected to the inclined side wall of the auxiliary pushing block (20) by a sliding contact. The auxiliary pushing block (20) is integrally provided in the roller component (7). The roller component (7) forms a sliding structure on the punched column (4), and a first spring (21) is installed at the sliding connection between the two.

6. The grooved forging device for producing valve left and right shell blanks according to claim 5, characterized in that: The connecting rod (18) is connected to the output end of the fourth hydraulic cylinder (22) by pressing, and the fourth hydraulic cylinder (22) is fixedly installed on the auxiliary platform (12).

7. A grooved forging device for producing valve left and right shell blanks according to claim 5, characterized in that: The sliding connection between the connecting push rod (18) and the punching column (4) is provided with a limiting mechanism (23) for locking the connecting push rod (18). The limiting mechanism (23) is used to control the connecting push rod (18) to slide gradually, and the gradually sliding connecting push rod (18) drives the rolling roller (7) to slide and unfold gradually in sequence. The limiting mechanism (23) includes a ratchet groove (24) on the connecting push rod (18) and a pawl locking block (25) that is telescopically slidably connected in the punching column (4). The pawl locking block (25) is connected to the ratchet groove (24) by a snap-fit ​​method, and a second spring (26) is installed at the sliding connection between the pawl locking block (25) and the punching column (4).

8. A grooved forging device for producing valve left and right shell blanks according to claim 7, characterized in that: The punched column (4) is provided with an unlocking frame (27) for unlocking the limiting mechanism (23). The unlocking frame (27) is driven by the fourth hydraulic cylinder (22) to form a sliding structure in the punched column (4), and a third spring (28) is installed at the sliding connection between the two. The protrusion in the unlocking frame (27) is connected to the inclined groove wall in the pawl lock block (25) by a pressing and sliding method. The output end of the fourth hydraulic cylinder (22) forms a rotating structure on the unlocking frame (27), and the limiting ring on the output end of the fourth hydraulic cylinder (22) is connected to the unlocking frame (27) by a pressing and pushing method.

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