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

Abstract

The invention discloses an integral forging device for a high-temperature and high-pressure valve body, which comprises a forging machine (1), a working table (41) is arranged in the forging machine (1), a forging die (2) is arranged on the working table (41), and the forging die (2) comprises an upper die (3) at the hammer head end of the forging machine (1) and a lower die (4) arranged on the working table (41); the lower die (4) comprises a bottom plate (5) connected with the workbench (41), two lower die blocks (6) which are spliced and connected with each other are arranged on the bottom plate (5), and a pair of first connecting rods (7) are arranged on the side parts of the lower die blocks (6); a discharging air cylinder (8) is arranged at one end of the workbench (41), and two sets of three-dimensional frames (9) are arranged at the other end of the workbench (41). The mold is separated through a split staggered structure, rapid demolding is achieved, the demolding efficiency of the valve body is improved, and meanwhile the forging quality of the valve body is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of valve body forging equipment, in particular to an integral forging device for a high-temperature and high-pressure valve body. Background Art

[0002] Valve body forging is an advanced metal processing technology, mainly used to manufacture high-performance and high-reliability valve bodies. The valve body needs to be demolded after forging. The demolding methods of forged valve body forgings are mainly divided into mechanical demolding, automatic demolding and manual demolding. Mechanical demolding includes an ejection demolding method, in which an ejection mechanism is arranged at the bottom of the mold, and the forging is pushed out of the mold cavity by driving the ejection device through a hydraulic cylinder or a cylinder. For example, the Chinese invention patent with the publication number CN117644176A discloses an automatic forging demolding device for precision forging blades, including a plurality of first ejector rods penetrating the mold; when the demolding device is used, one end of the plurality of first ejector rods is arranged in contact with the precision forging blade to be demolded, and the plurality of first ejector rods can make the precision forging blade to be demolded separate from the mold; preferably, the mold is provided with a plurality of first through holes, and the first ejector rods are arranged through the first through holes; preferably, the first ejector rods are in clearance fit with the first through holes; preferably, the demolding device includes four first ejector rods, and the four first ejector rods are arranged symmetrically; preferably, the demolding device includes a top plate, the top plate is arranged at the bottom of the mold, and the other ends of the plurality of first ejector rods are arranged in contact with the top plate. However, since the valve body is still in a high temperature state, its surface morphology has not been completely solidified, and the ejector mechanism touches the forging, which is easy to form a depression on the surface of the forging, affecting the quality of the valve body. Secondly, the high-temperature and high-pressure valve body is usually complex in structure, with more internal holes, ribs, bosses and other structures, and uneven wall thickness. This structural feature will increase the adhesion between the forging and the mold, thereby increasing the difficulty of demolding. Therefore, the demolding effect of this method is not ideal. Summary of the invention

[0003] The object of the present invention is to provide an integral forging device for a high-temperature and high-pressure valve body. The present invention separates the mold through a split staggered structure to achieve rapid demoulding, improve the demoulding efficiency of the valve body, and ensure the forging quality of the valve body.

[0004] The technical solution provided by the present invention is as follows: an integral forging device for a high-temperature and high-pressure valve body, comprising a forging machine, a workbench is provided in the forging machine, a forging die is provided on the workbench, 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 blocks which are spliced ​​and connected to each other are provided on the bottom plate, and the side of the lower die block has a pair of first connecting rods; a discharge cylinder is provided at one end of the workbench, and two groups of three-dimensional frames are provided at the other end of the workbench, the three-dimensional frame has a lateral moving component, the moving end of the lateral moving component has a longitudinal adjustment component, the moving end of the longitudinal adjustment component has a flipping component, the flipping end of the flipping component has a straight plate, and the straight plate has a pair of second connecting rods connected to the first connecting rods.

[0005] In the above-mentioned integral forging device for the high-temperature and high-pressure valve body, the lower die block has shaft grooves around it, a positioning shaft is passed through the shaft groove, and the bottom plate has a bottom groove matching the positioning shaft; the lower die block has side branches on both sides, and bolts are provided between the side branches between the two lower die blocks; the side of the bottom plate has a right-angle piece connected to the workbench by screws.

[0006] In the aforementioned integral forging device for a high-temperature and high-pressure valve body, the workbench is provided with a slideway, and the bottom of the base plate is provided with a protrusion that fits with the slideway.

[0007] In the aforementioned integral forging device of the high-temperature and high-pressure valve body, the lateral moving component includes a slide rail arranged at the front end of the three-dimensional frame, the slide rail has a matching slider, and the longitudinal adjustment component is arranged on the slider; the front end of the three-dimensional frame is also provided with a motor bracket, and the motor bracket is provided with a lateral motor, and the output end of the lateral motor is connected to a screw, and the screw is matched with a moving block, and the moving block is connected to the longitudinal adjustment component.

[0008] In the aforementioned integral forging device of the high-temperature and high-pressure valve body, the longitudinal adjustment assembly includes a support plate connected to the moving block, a longitudinal plate is provided on the support plate through the slide rail slider assembly, an adjustment rod is provided on the back side of the longitudinal plate, one end of the adjustment rod passes through the upper end of the support plate, and a fixing nut is screwed on the threaded portion of the adjustment rod to interfere with the upper end of the support plate.

[0009] In the aforementioned integral forging device of the high-temperature and high-pressure valve body, the flip assembly includes a group of connecting rod seats and a group of cylinder seats arranged on the longitudinal plate plane, a connecting rod body is arranged between the connecting rod seats via bearings, a rotatable flip cylinder is arranged between the cylinder seats, and the flip cylinder is hinged to the connecting rod body; one end of the connecting rod body has a flange, and the straight plate is connected to the flange.

[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 fixing state between the bottom 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, so as to improve the demoulding efficiency of the valve body and ensure 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 schematic diagram of the structure of the present invention;

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

[0017] Figure 3 is a 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 a flip assembly;

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

[0021] Figure 7 A schematic diagram of a 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-turning assembly, 14-straight plate, 15-second connecting rod, 16-axis groove, 17-positioning axis, 18-bottom groove, 19-side branch, 20-bolt member, 21-right angle Parts, 22-slideway, 23-protrusion, 24-slide rail, 25-slider, 26-motor bracket, 27-lateral motor, 28-screw, 29-moving block, 30-supporting 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 is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0024] Embodiment: An integral forging device for a high temperature and high pressure valve body, comprising 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, and a complete valve body is formed in the lower die; the lower die 4 includes a bottom plate 5, and two lower die blocks 6 are arranged on the bottom plate 5, which are connected to each other. 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. Two sets of three-dimensional frames 9 are installed at the other end of the workbench, and the three-dimensional frames 9 have a lateral moving component 10, and the moving end of the lateral 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 via a bolt member 20. When the two lower mold blocks are separated, the two discs of the two rod bodies need to be connected. The discs have multiple bolt members around the center 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 inserted into the axis groove 16. The bottom plate 5 has a bottom groove 18 that matches the positioning shaft 17. As shown in the attached 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 lower mold can be stabilized by the right-angle piece, and a certain offset will occur during the forging process.

[0025] The lateral movement assembly 10 includes a slide rail 24 disposed at the front end of the stereoscopic frame 9, as shown in the attached Figure 6 As shown, the slide rail 24 has a matching slider 25, and the longitudinal adjustment component 11 is arranged on the slider 25; the front end of the stereoscopic frame 9 is also equipped 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 rod 28, and the screw rod 28 is matched 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 to drive the screw to rotate, and the moving seat matched 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 and 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 an axis body, and the upper end of the axis 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 contacts the upper end of the supporting plate 30 is screwed on the threaded portion of the adjusting rod 32. The adjustment type first determines the longitudinal position of the supporting plate, the adjusting rod passes through the upper end of the supporting plate, and the fixing nut is tightened, and the bottom of the fixing nut contacts 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 arranged 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, 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, the straight plate 14 is connected to the flange body, and 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, and the lower mold block can be flipped stably. The flipping directions of the lower mold blocks on both sides are different, and the dislocation separation is realized, so that the metal liquid on the valve body forging and the mold are easier to separate. This demolding method can separate the forging from the mold with consistent force and speed, avoiding deformation, scratches or damage of parts caused by improper manual operation, reducing the friction between the mold and the forging, and extending the service life of the mold.

[0028] Working principle of the present invention: after the valve body forging operation is completed, it is necessary to first release the fixing between the bottom plate 5 and the workbench 41. This fixing is usually achieved by connecting the right-angle piece 21 on the side of the bottom plate 5 with the workbench 41 through screws. By unscrewing the screws, the fixing 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, and the push plate pushes the bottom plate 5 to move outward. Since the workbench 41 is provided with a slideway 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 smoothly moved outward 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 bolts 20. A plurality of bolts 20 are 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 demolding 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 forging die is provided. 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 a workbench (41); the lower die (4) comprises a bottom plate (5) connected to the workbench (41); two lower die blocks (6) are arranged on the bottom plate (5) and connected to each other; the side of the lower die block (6) has a pair of first connecting rods (7); a discharge cylinder (8) is arranged at one end of the workbench (41); two sets of three-dimensional frames (9) are arranged at the other end of the workbench (41); a lateral moving assembly (10) is arranged on the three-dimensional frame (9); a longitudinal adjustment assembly (11) is arranged on the moving end of the lateral moving assembly (10); a flip assembly (13) is arranged on the moving end of the longitudinal adjustment assembly (11); a straight plate (14) is arranged on the flip end of the flip assembly (13); a pair of second connecting rods (15) connected to the first connecting rods (7) are arranged on the straight plate (14).

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 inserted into the axis groove (16), and the bottom plate (5) has a bottom groove (18) matched with the positioning shaft (17); the lower mold block (6) has side branches (19) on both sides, and bolts (20) are provided between the side branches (19) between 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 protrusion (23) that fits with the slideway (22).

4. The integral forging device for a high-temperature and high-pressure valve body according to claim 1, characterized in that: The transverse moving assembly (10) comprises a slide rail (24) arranged at the front end of the three-dimensional frame (9), the slide rail (24) having a matching slider (25), and the longitudinal adjustment assembly (11) is arranged on the slider (25); the front end of the three-dimensional 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 rod (28), the screw rod (28) is matched with a moving block (29), and the moving block (29) is connected to the longitudinal adjustment assembly (11).

5. The integral forging device for a high-temperature and high-pressure valve body according to claim 4, characterized in that: The longitudinal adjustment assembly (11) comprises a supporting plate (30) connected to a moving block (29), a longitudinal plate (31) being arranged on the supporting plate (30) via a slide rail (24) and a slider (25) assembly, an adjustment rod (32) being arranged on the back side of the longitudinal plate (31), one end of the adjustment rod (32) passing through the upper end of the supporting plate (30), and a fixing nut (33) being screwed on the threaded portion of the adjustment rod (32) and contacting the upper end of the supporting plate (30).

6. The integral forging device for a high-temperature and high-pressure valve body according to claim 5, characterized in that: The flip assembly (13) comprises 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 arranged between the connecting rod seats (34) via bearings; a rotatable flip cylinder (37) is arranged 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 (38).

7. The integral forging device for a high-temperature and high-pressure valve body according to claim 1, characterized in that: 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), and the first disc (39) and the second disc (40) are connected via a bolt member (20).

Images