Forging device for ball valve bonnet with horizontal extrusion structure

Abstract

This invention discloses a ball valve cover forging device with a horizontal extrusion structure, including a working platform (1), a mold body (2) on the working platform (1), a horizontal cylinder (3) on the working platform (1), a punch (4) fixedly connected to the extended end of the horizontal cylinder (3), the punch (4) being used to horizontally extend into the mold body (2) to form the flow channel hole of the valve cover; a fixed support (5) is provided on the working platform (1), the punch (4) is inserted into the fixed support (5), and a movable support (6) is also provided on the working platform (1). This invention uses the linkage centering components of the fixed support and the movable support to form a stable centering support for the punch by utilizing the ball at the end of the top column, maintaining the coaxiality of the punch during the movement of the punch, ensuring the forming accuracy of the flow channel hole of the valve cover, and reducing the wear of the punch and the mold.

Description

Technical Field

[0001] This invention relates to the field of valve cover forging equipment, and in particular to a ball valve cover forging apparatus with a horizontal extrusion structure. Background Technology

[0002] The valve cover is a core component of a ball valve. To ensure its structural strength and sealing performance, the industry generally uses forging technology to form the valve cover. Among existing ball valve cover die forging equipment, the quick-release combined valve cover die forging mold disclosed in Chinese utility model patent CN222999605U is a relatively typical structural form. This mold mainly includes an upper assembly mold and a lower assembly mold. The upper assembly mold has a valve cover cavity pre-set in the middle position inside, and the lower assembly mold has a corresponding valve cover cavity in the middle position inside. The lower end of the valve cover cavity of the lower mold also has a lower mold insert cavity and an assembly insert. At the same time, a primary punch and a secondary punch are respectively set on both sides of the upper assembly mold and the lower assembly mold.

[0003] When this type of mold is working, it relies on punches on both sides of the mold to horizontally extrude the blank in the mold cavity, thereby forming the flow channel hole structure at the end of the valve cover. However, in actual operation, when the power component drives the punch to feed and extrude the blank, the punch will be subjected to the reverse force of the blank. This force is prone to causing the punch to deflect, forming a deflection torque. Under long-term operation, the mating parts of the punch and the mold are prone to wear. As the usage time increases, the coaxiality of the punch and the guide hole on the side of the mold will deviate, ultimately affecting the forming accuracy of the flow channel hole of the valve cover and reducing the service life of the mold and the punch. Summary of the Invention

[0004] The purpose of this invention is to provide a ball valve cover forging apparatus with a horizontal extrusion structure. This invention utilizes a linkage alignment assembly between a fixed support and a movable support, employing the ball at the end of the push pin to form a stable alignment support for the punch, maintaining the coaxiality of the punch during movement, ensuring the forming accuracy of the valve cover flow channel holes, and reducing wear on the punch and die.

[0005] The technical solution provided by this invention is as follows: a ball valve cover forging device with a horizontal extrusion structure, including a working platform, a mold body on the working platform, a horizontal cylinder on the working platform, a punch fixedly connected to the extended end of the horizontal cylinder, the punch being used to horizontally extend into the mold body to form the flow channel hole of the valve cover; a fixed support member on the working platform, the punch slidingly passing through the fixed support member; a movable support member on the working platform, the movable support member including a main frame, a main cover at the upper end of the main frame, a linkage centering component inside the main cover, the movable end of the linkage centering component being located on the outer side of one end of the main cover, and multiple top posts being arranged around the central axis of the punch on the movable end of the linkage centering component, the ends of the top posts having spheres that abut against the surface of the punch; wherein, the linkage centering component drives the multiple top posts to move synchronously radially, so that the spheres at the ends of each top post abut against the surface of the punch, thereby forming a centering support in the circumferential direction of the punch, so as to pre-counteract the deflection torque generated when the punch extrudes the blank, and maintain the coaxiality of the punch and the guide hole of the mold body.

[0006] In the ball valve cover forging device with the above-mentioned horizontal extrusion structure, a set of cylinder support seats is provided on the working platform, and a right angle plate is provided on the cylinder support seats. The fixing body of the horizontal cylinder passes through the right angle plate.

[0007] In the aforementioned ball valve cover forging device with a horizontal extrusion structure, the main cover includes a main shell disposed on the upper end of the main frame, one end of the main shell is bolted to an end cap, and the punch penetrates into the channel between the center of the main shell and the end cap.

[0008] In the aforementioned ball valve cover forging device with a horizontal extrusion structure, the linkage centering assembly includes a positioning ring disposed on the main shell, one end of the end cover having a pressing part, a driving ring body disposed on the positioning ring, the pressing part abutting against one end of the driving ring body; the circumferential surface of the main shell has a power component for rotating the driving ring body, and the end face of the main shell facing the mold body has multiple radially extending cross-shaped limiting grooves, each cross-shaped limiting groove having a guide block slidably disposed therein, the top post being disposed on the guide block, and the driving ring body being connected to one end of the guide block.

[0009] In the aforementioned ball valve cover forging device with a horizontal extrusion structure, one end face of the drive ring has a helical track, one end of the guide block has a connecting part, and the connecting part has a bayonet that fits with the helical track.

[0010] In the aforementioned ball valve cover forging device with a horizontal extrusion structure, the inner end of the power component has a helical gear, and the other end face of the drive ring body has a helical tooth ring that meshes with the helical gear.

[0011] In the aforementioned ball valve cover forging device with a horizontal extrusion structure, the top column includes a support plate disposed on the guide block. One end of the support plate is provided with a main column, and the end of the main column has a placement cavity. The end face of the main column has a fixing plate for fixing the ball. The fixing plate has an arc-shaped groove. The ball can be rolled in the spherical space formed by the placement cavity and the arc-shaped groove, and the outer wall of the ball protrudes from the fixing plate and abuts against the outer surface of the punch.

[0012] In the aforementioned ball valve cover forging device with a horizontal extrusion structure, the end of the main column has a liquid injection nozzle, and the main column has a liquid flow channel that communicates with the placement cavity. The liquid injection nozzle is connected to one end of the liquid flow channel.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In this invention, after the upper and lower parts of the mold body are closed and forged, the horizontal cylinder is activated. The extended end of the horizontal cylinder is connected to a punch. The punch passes through the fixed support and the movable support. By using a tool, the movable end of the linkage centering component gradually approaches the punch, while simultaneously driving the ball at the end of the top post to approach the punch and abut against the surface of the punch. Multiple top posts are evenly arranged around the central axis of the punch. Under the action of the top posts, the punch maintains radial centering constraint, counteracts the deflection torque generated when the punch extrudes the blank, avoids the punch from skewing, ensures the coaxiality of the punch and the mold guide hole, improves the forming accuracy of the valve cover flow channel hole, and reduces the wear of the punch and the mold body.

[0014] 2. The ball is set in the internal space formed by the arc groove and the placement cavity. The ball can roll. When the punch moves horizontally, there is rolling friction between the ball and the punch, which reduces the wear on the surface of the punch and ensures smooth feeding of the punch.

[0015] 3. In the linkage centering assembly, the driving ring body is driven to rotate by the power component, and the guide block connected to the driving ring body is simultaneously linked, thereby realizing the simultaneous radial displacement of the top column and stabilizing the top contact punch. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of a horizontal cylinder; Figure 3 A schematic diagram of the main cover; Figure 4 This is a schematic diagram of the driving ring. Figure 5 This is a schematic diagram of the power component; Figure 6 This is a schematic diagram of a spiral track; Figure 7 A schematic diagram of the main column; Figure 8 This is a schematic diagram of the placement cavity; Figure 9 This is a schematic diagram of an arc-shaped groove.

[0017] Reference numerals: 1-Working platform, 2-Mold body, 3-Horizontal cylinder, 4-Punch, 5-Fixed support, 6-Modible support, 7-Main frame, 8-Main cover, 9-Linkage centering assembly, 10-Top column, 11-Spherical body, 13-Cylinder support seat, 14-Right angle plate, 15-Main shell, 16-End cover, 17-Positioning ring, 18-Top pressing part, 19-Drive ring body, 20-Power component, 21-Guide block, 22-Helical track, 23-Connecting part, 24-Bayonet, 25-Helical gear, 26-Helical gear ring, 27-Support plate, 28-Main column, 29-Placement cavity, 30-Fixing plate, 31-Arc groove, 32-Injection nozzle, 33-Flow channel, 34-Cross limit groove. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0019] Example: A ball valve cover forging apparatus with a horizontal extrusion structure, including a working platform 1, as shown in the attached diagram. Figure 1 As shown, the work platform 1 is equipped with the mold body 2. Both the work platform and the mold body are standard technologies used in forging equipment, and will not be described in detail here. The work platform 1 is equipped with a horizontal cylinder 3, as shown in the attached diagram. Figure 2As shown, a set of cylinder support seats 13 are installed on the working platform 1, and a right-angle plate 14 is installed on the cylinder support seat 13. The fixing body of the horizontal cylinder 3 passes through the right-angle plate 14. This provides a stable mounting carrier for the horizontal cylinder, reliably fixing the cylinder on the working platform and preventing the cylinder from loosening or shifting when driving the punch to extrude the blank. The horizontal cylinder passes through the cylinder support seat, and the nut on the horizontal cylinder is tightened, with the nut abutting against the plate of the cylinder support seat. The extended end of the horizontal cylinder 3 is fixedly connected to a punch 4, which is used to horizontally extend into the mold body 2 to form the flow channel hole of the valve cover. In the actual forging process, the valve cover is first formed by longitudinal forging of the mold body around the blank. Then, the horizontal cylinder drives the punch to extend into the mold body, and the punch extrudes the blank to form the flow channel hole. After forging, the valve cover part will be machined to form the medium flow channel inside the valve cover. A fixed support 5 is installed on the working platform 1. The punch 4 passes through the fixed support 5. An oil injection head is provided at the upper end of the fixed support 5. Through this oil injection head, lubricating oil is injected into the gap between the punch and the fixed support 5. When the punch moves horizontally, it will rub against the inner wall of the fixed support 5. The lubricating oil provides good lubrication to the contact surface between the two. Oil collection boxes are provided on both sides of the fixed support 5, and excess lubricating oil will flow into the oil collection boxes. A movable support 6 is also installed on the working platform 1. The movable support 6 includes a main frame 7, and a main cover 8 is installed at the upper end of the main frame 7. Figure 3 As shown, the main cover 8 has a linkage centering component 9. The movable end of the linkage centering component 9 is located on the outer side of one end of the main cover 8. A top post 10 is installed on the movable end of the linkage centering component 9 around the central axis of the punch 4. The end of the top post 10 has a ball 11 that abuts against the surface of the punch 4. The linkage centering component 9 drives multiple top posts 10 to move radially synchronously, so that the balls 11 at the ends of each top post 10 abut against the surface of the punch 4 evenly, thereby forming a centering support in the circumferential direction of the punch 4 to pre-counteract the deflection torque generated when the punch 4 extrudes the blank and maintain the coaxiality of the punch 4 and the guide hole of the mold body 2.

[0020] The main cover 8 includes a main shell 15 disposed on the upper end of the main frame 7. One end of the main shell 15 is bolted to an end cap 16. A punch 4 passes through the channel between the main shell 15 and the end cap 16. The outer end of the main shell is connected to the end cap by screws. The linkage centering assembly 9 includes a positioning ring 17 disposed on the main shell 15. One end of the end cap 16 has a pressing part 18. A driving ring body 19 is sleeved on the positioning ring 17, as shown in the attached figure. Figure 4As shown, the center of the end cap is connected to the positioning ring via screws, and the end cap is stably connected to the main shell. The top pressing part 18 abuts against one end of the drive ring body 19. When assembling the linkage alignment assembly, the drive ring body is placed on the positioning ring of the main shell, and then the end cap is connected to the main shell, with the top pressing part pressing against the drive ring body. The circumferential surface of the main shell 15 has a power component 20 for rotating the drive ring body 19, as shown in the attached figure. Figure 5 As shown, the power component is a rotating shaft installed in a hole on the circumferential side of the main housing. Its outer end is a square groove. A wrench is inserted into this square groove, pushing the wrench to rotate. The inner end of the power component 20 has a helical gear 25. The other end face of the drive ring 19 has a helical gear ring 26 that meshes with the helical gear 25. The wrench drives the power component to rotate, and the helical gear structure causes the drive ring to rotate. Three radially sliding guide blocks 21 are installed on the end face of the main housing 15. The main housing has three radially extending cross-shaped limiting grooves 34. The guide blocks are embedded in these limiting grooves and move radially along the main housing. One end face of the drive ring 19 has a spiral track 22, as shown in the attached figure. Figure 6 As shown, one end of the guide block 21 has a connecting part 23, and the connecting part 23 has a locking slot 24 that engages with the spiral track 22. When the drive ring rotates, the locking slot at one end of the guide block engages with the spiral track, and the guide block will move along the trajectory of the cross-shaped limiting groove toward the outer or inner end of the main shell. The rotational motion of the drive ring is converted into the linear motion of the guide block. The top post 10 is set on the guide block 21, and the drive ring 19 is connected to one end of the guide block 21. The locking slots of multiple sets of guide blocks all engage with the same spiral track, which can realize the synchronous radial feeding of all top posts, ensure uniform circumferential force on the punch, and simultaneously center and constrain the punch from multiple directions, effectively preventing the punch from deflecting under force and ensuring coaxiality.

[0021] The top column 10 includes a support plate 27 disposed on the guide block 21. The support plate is connected to the guide block by screws, and the support plate is stably installed. A main column 28 passes through one end of the support plate 27, as shown in the attached figure. Figure 7 As shown, one end of the main column has a flange structure, which is connected to the plate of the support plate. The end of the main column 28 has a placement cavity 29, as shown in the attached figure. Figure 8 As shown, the end face of the main column 28 has a fixing plate 30 for fixing the ball 11. A rubber ring is provided between the fixing plate and the end of the main column to improve the sealing between the fixing plate and the main column. The fixing plate 30 has an arc-shaped groove 31, as shown in the attached figure. Figure 9As shown, the sphere 11 is disposed within a space formed by the placement cavity 29 and the arc-shaped groove 31. During installation, the sphere is placed into the arc-shaped groove for initial installation. A fixing plate with an arc-shaped groove is then assembled onto the end face of the main column, so that the arc-shaped groove of the fixing plate and the placement cavity of the main column enclose each other, forming a closed limiting space that confines the sphere within this space. After installation, part of the sphere protrudes from the end of the main column. The punch moves horizontally under the drive of the horizontal cylinder. During this process, rolling friction occurs between the punch and the sphere, reducing wear on the punch surface and ensuring smooth punch feed. The end of the main column 28 has a liquid injection nozzle 32 connected to a lubrication pump station. The main column 28 has a fluid flow channel 33 communicating with the placement cavity 29, and the liquid injection nozzle 32 is connected to one end of the fluid flow channel 33. The injection nozzle, acting as the lubricant inlet, guides the lubricant into the flow channel and delivers it to the contact point between the ball and the punch, forming a lubricating film. This further reduces the original contact friction, significantly decreasing wear on the surfaces of the ball and the punch, ensuring smooth punch feed. Continuous lubrication prevents the ball from getting stuck, ensuring that the ball can always roll freely and stably provide radial centering support for the punch, avoiding excessive frictional resistance from affecting the coaxiality of the punch.

[0022] The working principle of this invention is as follows: First, the forging billet is placed into the mold body 2. The mold body 2 closes its upper and lower parts and performs longitudinal forging on the billet, initially forming the shape of the valve cover body. The horizontal cylinder 3 is securely installed on the working platform 1 via the cylinder support seat 13 and the right-angle plate 14. The punch 4 passes through the central channel of the main cover 8 of the fixed support 5 and the movable support 6 in sequence, completing the positioning before horizontal feeding. Before the punch 4 performs the extrusion operation, the power component 20 on the outside of the main shell 15 is rotated. The helical gear 25 at the inner end of the power component 20 meshes with the helical gear ring 26 of the drive ring body 19, driving the drive ring body 19 to rotate under the limitation of the positioning ring 17 and the top pressing part 18 of the end cover 16. The spiral track 22 rotates synchronously, causing each guide block 21 to move synchronously in the radial limiting groove of the main shell 15. This drives all the top pillars 10 to move synchronously toward the punch 4 until the ball 11 at the end of the top pillar 10 evenly contacts the surface of the punch 4, forming a rigid centering support for the punch 4 from multiple circumferential directions. This pre-counters the deflection tendency during extrusion. After centering, the horizontal cylinder 3 drives the punch 4 to feed horizontally and extend into the mold body 2. The punch 4 extrudes the blank to form the valve cover flow channel hole. During the feeding process of the punch 4, the ball 11 at the end of the top pillar 10 and the punch 4 undergo rolling friction, which ensures the smooth movement of the punch 4 and maintains the coaxiality of the punch 4 and the mold guide hole.

Claims

1. A ball valve cover forging device with a horizontal extrusion structure, comprising a working platform (1), wherein a die body (2) is provided on the working platform (1), characterized in that: The working platform (1) is equipped with a horizontal cylinder (3), and a punch (4) is fixedly connected to the extended end of the horizontal cylinder (3). The punch (4) is used to horizontally extend into the mold body (2) to extrude the blank and form the flow channel hole of the valve cover. The working platform (1) is equipped with a fixed support (5), and the punch (4) slides through the fixed support (5). The working platform (1) is also equipped with a movable support (6), which includes a main frame (7). The upper end of the main frame (7) is equipped with a main cover (8), and the main cover (8) has a linkage centering component (9). The movable end of the linkage centering component (9) is set with On one side of the main cover (8), and on the movable end of the linkage centering assembly (9), there are multiple top posts (10) around the central axis of the punch (4). The ends of the top posts (10) have spheres (11) that abut against the surface of the punch (4). The linkage centering assembly (9) drives the multiple top posts (10) to move radially in sync, so that the spheres (11) at the ends of each top post (10) abut against the surface of the punch (4) evenly, thereby forming a centering support in the circumferential direction of the punch (4) to pre-counteract the deflection torque generated when the punch (4) extrudes the blank, and maintain the coaxiality of the punch (4) and the guide hole of the mold body (2).

2. The ball valve cover forging apparatus with a horizontal extrusion structure according to claim 1, characterized in that: The working platform (1) is provided with a set of cylinder support seats (13), and the cylinder support seats (13) are provided with right angle plates (14). The fixing body of the horizontal cylinder (3) passes through the right angle plates (14).

3. The ball valve cover forging apparatus with a horizontal extrusion structure according to claim 1, characterized in that: The main cover (8) includes a main shell (15) located on the upper end of the main frame (7). One end of the main shell (15) is bolted to an end cap (16). The punch (4) is inserted into the channel between the main shell (15) and the end cap (16).

4. The ball valve cover forging apparatus with a horizontal extrusion structure according to claim 3, characterized in that: The linkage centering component (9) includes a positioning ring (17) disposed on the main shell (15), one end of the end cap (16) has a pressing part (18), the positioning ring (17) is provided with a driving ring body (19), the pressing part (18) abuts against one end of the driving ring body (19); the circumferential surface of the main shell (15) has a power component (20) for rotating the driving ring body (19), the end face of the main shell (15) facing the mold body (2) is provided with a plurality of radially extending cross-shaped limiting grooves (34), each cross-shaped limiting groove (34) is slidably provided with a guide block (21), the top post (10) is disposed on the guide block (21), and the driving ring body (19) is connected to one end of the guide block (21).

5. The ball valve cover forging apparatus with a horizontal extrusion structure according to claim 4, characterized in that: One end face of the drive ring (19) has a spiral track (22), and one end of the guide block (21) has a connecting part (23), and the connecting part (23) has a bayonet (24) that fits with the spiral track (22).

6. The ball valve cover forging apparatus with a horizontal extrusion structure according to claim 5, characterized in that: The inner end of the power component (20) has a helical gear (25), and the other end face of the drive ring body (19) has a helical tooth ring (26) that meshes with the helical gear (25).

7. The ball valve cover forging apparatus with a horizontal extrusion structure according to claim 4, characterized in that: The top column (10) includes a support plate (27) disposed on the guide block (21). One end of the support plate (27) is provided with a main column (28). The end of the main column (28) has a placement cavity (29). The end face of the main column (28) has a fixing plate (30) for fixing the ball (11). The fixing plate (30) has an arc groove (31). The ball (11) can be rolled in the spherical space formed by the placement cavity (29) and the arc groove (31). The outer wall of the ball (11) is exposed to the fixing plate (30) and abuts against the outer surface of the punch (4).

8. The ball valve cover forging apparatus with a horizontal extrusion structure according to claim 7, characterized in that: The end of the main column (28) has a liquid injection nozzle (32), and the main column (28) has a liquid flow channel (33) that communicates with the placement cavity (29). The liquid injection nozzle (32) is connected to one end of the liquid flow channel (33).

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