Integral forging device for high-temperature high-pressure valve body

Abstract

The application discloses a high-temperature high-pressure valve body integral forging device, which comprises a forging machine (1), wherein a workbench (41) is arranged in the forging machine (1), a forging die (2) is arranged on the workbench (41), the forging die (2) comprises an upper die (3) at a hammer head end of the forging machine (1) and a lower die (4) arranged on the workbench (41), the lower die (4) comprises a bottom plate (5) connected with the workbench (41), two lower die sub-blocks (6) are arranged on the bottom plate (5) and are connected with each other, a pair of first connecting rods (7) are arranged on the side of the lower die sub-block (6), one end of the workbench (41) is provided with an ejection cylinder (8), and the other end of the workbench (41) is provided with two groups of stereoscopic frames (9). The application separates the die through a split dislocation structure, realizes rapid demolding, improves the demolding efficiency of the valve body and guarantees the forging quality of the valve body.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of valve body forging equipment, in particular to a whole forging device for high-temperature and high-pressure valve body. BACKGROUND

[0002] Valve body forging is an advanced metal processing technology, mainly used for manufacturing valve bodies with high performance and high reliability. After the valve body is forged, it needs to be demolded. The existing valve body forging piece demolding methods mainly include mechanical demolding, automatic demolding and manual demolding. The mechanical demolding includes a knockout demolding method, in which a knockout mechanism is arranged at the bottom of the mold, and a hydraulic cylinder or a pneumatic cylinder is used to drive the knockout device to push the forged piece out of the mold cavity. For example, a Chinese invention patent with the publication number CN117644176A discloses an automatic forging demolding device for precision forging blades, which includes a plurality of first ejector rods penetrating the mold. When the demolding device is used, one end of each of the first ejector rods is in contact with the precision forging blade to be demolded, and the first ejector rods can separate the precision forging blade to be demolded from the mold. Preferably, a plurality of first through holes are arranged on the mold, and the first ejector rods penetrate the first through holes. Preferably, the first ejector rods and the first through holes are in clearance fit. Preferably, the demolding device includes four first ejector rods, and the four first ejector rods are symmetrically arranged. Preferably, the demolding device includes a top plate arranged at the bottom of the mold, and the other end of each of the first ejector rods is in contact with the top plate. However, since the valve body is still in a high-temperature state, its surface morphology has not completely solidified, and the knockout mechanism touches the forged piece, which can easily form a depression on the surface of the forged piece, affecting the quality of the valve body. In addition, the high-temperature and high-pressure valve body usually has a complex structure, including many inner holes, rib plates, bosses and other structures, and the wall thickness is uneven. Such structural characteristics can increase the adhesion between the forged piece and the mold, thereby increasing the demolding difficulty. Therefore, the demolding effect of this method is not ideal. SUMMARY

[0003] The present application aims to provide a whole forging device for high-temperature and high-pressure valve body. The present application separates the mold through a split-misalignment structure, realizes rapid demolding, improves the demolding efficiency of the valve body, and ensures the forging quality of the valve body.

[0004] The technical scheme provided by the application is as follows: the high-temperature and high-pressure valve body overall forging device comprises a forging machine, a workbench arranged in the forging machine, a forging die arranged on the workbench, wherein the forging die comprises an upper die arranged at the hammer head end of the forging machine and a lower die arranged on the workbench; the lower die comprises a bottom plate, two lower die sub-blocks which are connected with each other are arranged on the bottom plate, and a pair of first connecting rods are arranged on the side of the lower die sub-blocks; one end of the workbench is provided with an ejection cylinder, the other end of the workbench is provided with two groups of stereoscopic frames, the stereoscopic frame is provided with a horizontal movement assembly, the moving end of the horizontal movement assembly is provided with a vertical adjustment assembly, the moving end of the vertical adjustment assembly is provided with a turnover assembly, the turnover end of the turnover assembly is provided with a straight plate, and the straight plate is provided with a pair of second connecting rods which are connected with the first connecting rods.

[0005] In the high-temperature and high-pressure valve body overall forging device, the lower die sub-blocks are provided with shaft grooves around, the shaft grooves are provided with positioning shafts, the bottom plate is provided with bottom grooves matched with the positioning shafts, the two sides of the lower die sub-blocks are provided with side supports, and the side supports between the two lower die sub-blocks are provided with bolt members; and the side of the bottom plate is provided with a right-angle member which is connected with the workbench through a screw.

[0006] In the high-temperature and high-pressure valve body overall forging device, the workbench is provided with a slide, and the bottom of the bottom plate is provided with a convex part matched with the slide.

[0007] In the high-temperature and high-pressure valve body overall forging device, the horizontal movement assembly comprises a slide rail arranged at the front end of the stereoscopic frame, the slide rail is provided with a slide block matched with the slide rail, and the vertical adjustment assembly is arranged on the slide block; the front end of the stereoscopic frame is further provided with a motor support, the motor support is provided with a horizontal motor, the output end of the horizontal motor is connected with a screw rod, the screw rod is matched with a moving block, and the moving block is connected with the vertical adjustment assembly.

[0008] In the high-temperature and high-pressure valve body overall forging device, the vertical adjustment assembly comprises a supporting plate connected with the moving block, the supporting plate is provided with a vertical plate through a slide block assembly of the slide rail, the back side of the vertical plate is provided with an adjusting rod, one end of the adjusting rod penetrates through the upper end of the supporting plate, and a fixing nut which abuts against the upper end of the supporting plate is screwed on the threaded part of the adjusting rod.

[0009] In the high-temperature and high-pressure valve body overall forging device, the turnover assembly comprises a group of connecting rod seats and a group of cylinder seats arranged on the plane of the vertical plate, a connecting rod body is arranged between the connecting rod seats through a bearing, a rotatable turnover cylinder is arranged between the cylinder seats, the turnover cylinder is hinged with the connecting rod body, one end of the connecting rod body is provided with a flange member, and the straight plate is connected with the flange member.

[0010] In the aforementioned integral forging device for a high-temperature and high-pressure valve body, the end of the first connecting rod is a first disc, and the end of the second connecting rod has a second disc connected to the first disc, and the first disc and the second disc are connected via bolts.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. In the present invention, after the valve body forging is completed, the fixed state between the base plate and the workbench is released, the discharge cylinder pushes the lower mold outward, and then the connection structure between the two lower mold blocks is released, the first connecting rod is connected to the second connecting rod, and the flipping mechanisms on both sides are started. The rotation directions of the flipping mechanisms on both sides are opposite, so that the two lower mold blocks form a staggered rotation, and the valve body forging between the two lower mold blocks can be deflected in position. At the same time, the lateral moving components on both sides of the lower mold pull the lower mold blocks in different directions, and the molds are separated by the split staggered structure, thereby improving the demoulding efficiency of the valve body and ensuring the forging quality of the valve body.

[0013] 2. Different valve bodies have different forging dies, so the height position of the first connecting rod will change. The height position of the straight plate and the second connecting rod on the straight plate can be adjusted by the longitudinal adjustment component to adapt to different dies.

[0014] 3. In the flip assembly, the connecting rod body is driven to rotate by the cylinder, thereby realizing the rotation of the second connecting rod, and the lower mold block can be flipped stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a structural diagram of the lower mold block;

[0017] Figure 3 Schematic diagram of the matching structure of the first connecting rod and the second connecting rod;

[0018] Figure 4 It is a schematic diagram of the bottom tank;

[0019] Figure 5 is a schematic diagram of the flip component;

[0020] Figure 6 is a schematic diagram of a lateral movement component;

[0021] Figure 7 Schematic diagram of the moving block.

[0022] Figure numerals: 1-forging machine, 2-forging die, 3-upper die, 4-lower die, 5-bottom plate, 6-lower die block, 7-first connecting rod, 8-discharging cylinder, 9-three-dimensional frame, 10-lateral moving assembly, 11-longitudinal adjustment assembly, 13-flip assembly, 14-straight plate, 15-second connecting rod, 16-axis groove, 17-positioning axis, 18-bottom groove, 19-side branch, 20-bolt, 21-right angle Parts, 22-slideway, 23-protrusion, 24-slide rail, 25-slider, 26-motor bracket, 27-horizontal motor, 28-screw, 29-moving block, 30-support plate, 31-longitudinal plate, 32-adjusting rod, 33-fixing nut, 34-connecting rod seat, 35-cylinder seat, 36-connecting rod body, 37-flip cylinder, 38-flange, 39-first disc, 40-second disc, 41-workbench. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and examples, but they are not intended to limit the present invention.

[0024] Embodiment: The integral forging device of a high temperature and high pressure valve body comprises a forging machine 1, as shown in the attached Figure 1 As shown, a workbench is installed in the forging machine 1, and a forging die 2 is installed on the workbench. The forging die 2 includes an upper die 3 arranged at the hammer head end of the forging machine 1 and a lower die 4 arranged on the workbench 41. The air hammer of the forging machine drives the upper die to move downward for forging, forming a complete valve body in the lower die; the lower die 4 includes a bottom plate 5, and the bottom plate 5 is provided with two lower die blocks 6 that are spliced ​​and connected to each other, as shown in the attached figure. Figure 2 As shown, the side of the lower mold block 6 has a pair of first connecting rods 7; one end of the workbench 41 is installed with a discharge cylinder 8, and the protruding end of the discharge cylinder has a push plate, which pushes the bottom plate to move outward. The workbench has a slide 22, and the bottom of the bottom plate 5 has a protrusion 23 that fits with the slide 22. The sliding form can ensure that the lower mold moves outward in a straight line on the workbench, and the position of the lower mold after it moves out is kept accurate. The other end of the workbench is installed with two sets of three-dimensional frames 9, and the three-dimensional frames 9 have a horizontal moving component 10, and the moving end of the horizontal moving component 10 has a longitudinal adjustment component 11, and the moving end of the longitudinal adjustment component 11 has a flip component 13, as shown in the attached figure. Figure 5 As shown, the flip end of the flip assembly 13 has a straight plate 14, and the straight plate 14 has a pair of second connecting rods 15 connected to the first connecting rod 7. Figure 3As shown, the end of the first connecting rod 7 is a first disc 39, and the end of the second connecting rod 15 has a second disc 40 connected to the first disc 39. The first disc 39 and the second disc 40 are connected by a bolt 20. When the two lower mold blocks are separated, the two discs of the two rod bodies need to be connected. There are multiple bolts around the center of the disc to improve the stability of the disc connection. The lower mold block 6 has an axis groove 16 around it, and a positioning shaft 17 is passed through the axis groove 16. The bottom plate 5 has a bottom groove 18 that matches the positioning shaft 17. Figure 4 As shown, the position of the lower mold block can be limited by the positioning axis to restrict its multiple degrees of freedom; the lower mold block 6 has side branches 19 on both sides, and bolts 20 are installed between the side branches 19 between the two lower mold blocks 6. Through this connection structure, the two lower mold blocks can be tightly fitted to ensure the integrity of the mold cavity; the side of the base plate 5 has a right-angle piece 21 connected to the workbench by screws. During the forging process, the right-angle piece can stabilize the lower mold, and the forging process will produce a certain offset.

[0025] The lateral movement assembly 10 includes a slide rail 24 provided at the front end of the stereoscopic frame 9. Figure 6 As shown, the slide rail 24 has a matching slider 25, and the longitudinal adjustment component 11 is set on the slider 25; the front end of the three-dimensional frame 9 is also installed with a motor bracket 26, and a horizontal motor 27 is installed on the motor bracket 26. The output end of the horizontal motor 27 is connected to a screw 28, and the screw 28 is equipped with a moving block 29, as shown in the attached Figure 7 As shown, the moving block 29 is connected to the longitudinal adjustment component 11, and the transverse motor runs, driving the screw to rotate, and the moving seat cooperating with the screw is displaced, so that the entire longitudinal adjustment component and the flipping component move, and the two groups of transverse moving components respectively pull the corresponding lower mold blocks to separate.

[0026] The longitudinal adjustment assembly 11 includes a supporting plate 30 connected to the moving block 29, and a longitudinal plate 31 is installed on the supporting plate 30 via the slide rail 24 slider 25 assembly. The back side of the longitudinal plate 31 is provided with an adjusting rod 32, and the adjusting rod includes a rod body on the back side of the longitudinal plate, and the end of the rod body has a universal ball structure, one end of the universal ball structure has a shaft body, the upper end of the shaft body is a threaded section, one end of the adjusting rod 32 passes through the upper end of the supporting plate 30, and a fixing nut 33 that conflicts with the upper end of the supporting plate 30 is screwed on the threaded portion of the adjusting rod 32. In the adjustment type, first determine the longitudinal position of the supporting plate, the adjusting rod passes through the upper end of the supporting plate, tighten the fixing nut, and the bottom of the fixing nut conflicts with the upper end of the supporting plate.

[0027] The flip assembly 13 includes a group of connecting rod seats 34 and a group of cylinder seats 35 set on the plane of the longitudinal plate 31. A connecting rod body 36 is installed between the connecting rod seats 34 via bearings. A rotatable flip cylinder 37 is installed between the cylinder seats 35. The flip cylinder 37 is hinged to the connecting rod body 36. One end of the connecting rod body 36 has a flange 38, and the straight plate 14 is connected to the flange body. The second connecting rod has a pair of connecting nuts for connecting the second connecting rod to the straight plate. The second connecting rod passes through the straight plate, and the nuts on both sides are tightened. The connecting rod body is driven to rotate by the cylinder, thereby realizing the rotation of the second connecting rod. The lower mold block can be flipped stably. The flipping directions of the lower mold blocks on both sides are different, realizing staggered separation, making it easier to separate the metal liquid on the valve body forging and the mold. This demolding method can separate the forging from the mold with consistent force and speed, avoiding deformation, scratches or damage to parts caused by improper manual operation, reducing friction between the mold and the forging, and thus extending the service life of the mold.

[0028] The working principle of the present invention is: after the valve body forging operation is completed, it is necessary to first release the fixation between the bottom plate 5 and the workbench 41. This fixation is usually achieved by connecting the right-angle piece 21 on the side of the bottom plate 5 to the workbench 41 through screws. By unscrewing the screws, the fixation of the two can be released. At this time, the discharge cylinder 8 installed at one end of the workbench 41 starts to work. The protruding end of the discharge cylinder 8 is provided with a push plate, which pushes the bottom plate 5 to move outward. Since the workbench 41 is provided with a slide 22, and the bottom of the bottom plate 5 has a protrusion 23 that fits therewith, this sliding fit design ensures that the lower mold 4 can be moved outward smoothly along a straight line on the workbench, ensuring the position accuracy of the lower mold 4 after it is moved out, which provides convenience for subsequent operations; then release the connection structure between the two lower mold blocks 6. The two lower mold blocks 6 are connected together by the bolt members 20 on the side branches 19 on both sides. Unscrewing these bolt members 20 can make the two lower mold blocks 6 lose their close fit. The first connecting rod 7 on the side of the lower mold block 6 is connected to the second connecting rod 15 on the straight plate 14. The end of the first connecting rod 7 is a first disc 39, and the end of the second connecting rod 15 has a second disc 40. The two discs are connected by a bolt 20. There are multiple bolts 20 distributed around the center of the disc. This design greatly improves the stability of the disc connection and ensures that the connection will not become loose during subsequent operations. After the preparation work is completed, start the flip assembly 13. When the flip cylinder 37 works, it drives the connecting rod body 36 to rotate, thereby realizing the rotation of the second connecting rod 15, and finally making the lower mold block 6 flip stably. It should be noted that the rotation directions of the flip mechanisms on both sides are opposite, which makes the two lower mold blocks 6 rotate in an offset manner. In this process, the valve body forging located between the two lower mold blocks 6 will also deflect in position. At the same time, the lateral moving components 10 on both sides of the lower mold 4 start to work. When the lateral motor 27 is running, it drives the screw 28 to rotate, and the moving block 29 cooperating with the screw 28 will be displaced, thereby driving the entire longitudinal adjustment component 11 and the flip component 13 to move. The lateral moving components 10 on both sides will pull the lower mold block 6 in different directions, cooperating with the staggered rotation of the flip component 13. Through this split staggered structure, the mold is separated, the demoulding efficiency of the valve body is improved, and the forging quality of the valve body is guaranteed.

Claims

1. An integral forging device for a high-temperature and high-pressure valve body, comprising a forging machine (1), wherein a workbench (41) is provided in the forging machine (1), and a forging die is provided on the workbench (41), wherein the device is characterized in that: The forging die comprises an upper die (3) arranged at the hammer head end of the forging machine (1) and a lower die (4) arranged on the workbench (41); the lower die (4) comprises a bottom plate (5) connected to the workbench (41), and two lower die blocks (6) are provided on the bottom plate (5) and connected to each other, and each lower die block (6) has a pair of first connecting rods (7) on its side; a discharge cylinder (8) is provided at one end of the workbench (41), and a push plate is provided at the protruding end of the discharge cylinder, and the push plate pushes the bottom plate to move outward; two sets of stereoscopic frames (9) are provided at the other end of the workbench (41), and a transverse moving component (10) is provided on the stereoscopic frame (9), and a longitudinal adjustment component (11) is provided on the moving end of the transverse moving component (10), and a flip component (13) is provided on the moving end of the longitudinal adjustment component (11), and a straight plate (14) is provided at the flip end of the flip component (13), and a pair of second connecting rods (15) connected to the first connecting rod (7) are provided on the straight plate (14); The transverse moving assembly (10) includes a slide rail (24) provided at the front end of the stereoscopic frame (9), the slide rail (24) has a matching slider (25), and the longitudinal adjustment assembly (11) is provided on the slider (25); the front end of the stereoscopic frame (9) is also provided with a motor bracket (26), the motor bracket (26) is provided with a transverse motor (27), the output end of the transverse motor (27) is connected to a screw (28), the screw (28) is matched with a moving block (29), and the moving block (29) is connected to the longitudinal adjustment assembly (11); the longitudinal adjustment assembly (11) includes a supporting plate (30) connected to the moving block (29), and the supporting plate (30) is provided with a longitudinal plate (31) via the slide rail slider assembly. ), the back side of the longitudinal plate (31) is provided with an adjusting rod (32), one end of the adjusting rod (32) passes through the upper end of the supporting plate (30), and a fixing nut (33) is screwed on the threaded portion of the adjusting rod (32) and contacts the upper end of the supporting plate (30); the flip assembly (13) includes a group of connecting rod seats (34) and a group of cylinder seats (35) arranged on the plane of the longitudinal plate (31), a connecting rod body (36) is provided between the connecting rod seats (34) via a bearing, a rotatable flip cylinder (37) is provided between the cylinder seats (35), and the flip cylinder (37) is hinged to the connecting rod body (36); one end of the connecting rod body (36) has a flange (38), and the straight plate (14) is connected to the flange (38); The end of the first connecting rod (7) is a first disc (39), and the end of the second connecting rod (15) has a second disc (40) connected to the first disc (39). The first disc (39) and the second disc (40) are connected via a bolt (20).

2. The integral forging device for a high-temperature and high-pressure valve body according to claim 1, characterized in that: The lower mold block (6) has an axis groove (16) around it, a positioning shaft (17) is passed through the axis groove (16), and the bottom plate (5) has a bottom groove (18) that matches the positioning shaft (17); the two sides of the lower mold block (6) have side branches (19), and bolts (20) are provided between the side branches (19) of the two lower mold blocks (6); the side of the bottom plate (5) has a right-angle piece (21) connected to the workbench (41) by screws.

3. The integral forging device for a high-temperature and high-pressure valve body according to claim 1, characterized in that: The workbench (41) is provided with a slideway (22), and the bottom of the base plate (5) is provided with a raised portion (23) that fits with the slideway (22).

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