Stainless steel flange forge piece forging die

Abstract

The utility model discloses a stainless steel flange forge piece forging die, which relates to the technical field of forging dies and comprises a lower die, an upper die, an ejector rod, a pulley, a moving block, a limiting block, an air cylinder, a protective edge and a protective mechanism. A movable block is arranged at the bottom of the wheel rail, a limiting block is arranged at the front end of the movable block and connected with an air cylinder, and the air cylinder drives the movable block to move so that the ejector rod can ascend and descend to eject materials. The top of the lower die is provided with a protective edge, and the top of the upper die is provided with a thermal baffle A, a spring B, a damper and a sleeve to realize buffer protection. A forge piece is automatically ejected out through the ejector rod, manual prying is omitted, die cavity cracking is avoided, meanwhile, impact is buffered, die deformation is reduced, the yield is increased, the fault shutdown frequency is reduced, the structure is stable, discharging is convenient and fast, and the protection effect is good.

Description

Technical Field

[0001] This utility model belongs to the field of industrial design technology, and specifically relates to a forging mold for stainless steel flange forgings. Background Technology

[0002] Stainless steel flanges are a type of general-purpose stainless steel flange, widely used in the manufacture of equipment and components requiring good overall performance (corrosion resistance and formability). Flanges are also called flange discs or flanges. Flanges are parts that connect shafts to each other, used for connecting pipe ends; there are also flanges used on equipment inlets and outlets for connecting two pieces of equipment, such as speed reducer flanges. Flange connections or flange joints refer to detachable connections that consist of flanges, gaskets, and bolts connected together as a combined sealing structure.

[0003] Pipe flanges are flanges used for piping in pipeline installations. When used on equipment, they refer to the inlet and outlet flanges of the equipment. Flanges have holes, and bolts are used to tightly connect two flanges. A gasket is used to seal between the flanges. Flanges are classified as threaded flanges, welded flanges, and clamp flanges. Flanges are always used in pairs. Low-pressure pipelines can use threaded flanges, while welded flanges are used for pressures above 4 kg. A gasket is placed between two flange plates, and then bolts are used to tighten them. Flanges of different pressures have different thicknesses, and the bolts used are also different. When pumps and valves are connected to pipelines, these equipment parts are also made into corresponding flange shapes, which is also called flange connection.

[0004] However, after traditional flange forging is completed, the forged part needs to be pried off manually to ensure uniform separation of the flange from the die cavity. Prying can easily cause the edge of the die cavity to crack. In addition, the frequent impact of the press during the pressing process can easily cause the die to deform and the probability of abnormal die damage is high. In order to solve the problems mentioned above, we propose a forging die for stainless steel flange forging. Utility Model Content

[0005] The purpose of this utility model is to provide a forging die for stainless steel flange forgings, which has the advantages of convenient unloading and pressure protection.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a forging mold for stainless steel flange forgings, including a lower mold, a push rod that is slidably sleeved through and connected to the center of the bottom of the lower mold, a pulley that is bolted to the bottom of the push rod, a wheel rail that is slidably connected to the bottom of the pulley, a moving block that is provided at the bottom of the wheel rail, a cylinder that is bolted to the front of the limiting block, a spring A that is sleeved on the surface of the cylinder output end, a protective edge that is welded to the top of the surface of the lower mold, and a protective mechanism that is provided at the top of the protective edge.

[0007] The above technical solution involves the cylinder retracting forward, causing the moving block to move, the pulley moving along the upward path of the moving block, the wheel rail limiting the movement of the pulley, the pulley rising and causing the ejector rod to rise, ejecting the forging, and the ejector rod directly lifting the forging. When the cylinder extends and retracts backward, the moving block moves backward and the ejector rod moves downward. Spring A can alleviate the mechanical fatigue of the cylinder, eliminating the need for manual prying. The flange and the die cavity are evenly separated, avoiding edge cracking of the die cavity caused by traditional prying, preventing surface scratches or dimensional deviations due to skew, improving the yield rate, reducing the contact time between the high-temperature forging and the die, reducing the risk of surface oxide layer peeling, and achieving significant improvements in efficiency, quality, and cost control through mechanical optimization of the bottom unloading mechanism.

[0008] The present invention is further configured such that the protective mechanism includes an upper mold, the upper mold is located at the top of the protective edge, a heat insulation plate A is provided on the top of the upper mold, springs B are bolted to the four corners of the top of the heat insulation plate A, a damper is sleeved inside the springs B, and a sleeve is bolted to the top of the springs B.

[0009] The above technical solution employs a protective mechanism. The press rod of the press is fixedly connected to the sleeve. When the sleeve is pressed down, the spring B contracts, pressing down the upper die to press the forging. When the sleeve moves upward, the spring B rebounds. The damper limits the spring's rebound, and the spring B drives the upper die to move upward, absorbing the instantaneous impact force of the pressing die, reducing the peak pressure on the die, reducing the risk of die surface crushing, dispersing the instantaneous pressure of the press, avoiding die deformation caused by frequent impacts, ensuring uniform filling of the die cavity with metal, reducing defects such as folding and incomplete filling, improving the yield rate, reducing the probability of abnormal die damage, and decreasing the frequency of production line shutdowns due to die failure.

[0010] The present invention is further configured such that a base is bolted to the bottom of the cylinder, a slider is bolted to the bottom of the moving block, and a groove is provided in the middle of the top rear end of the base, and the interior of the groove is slidably connected to the surface of the slider.

[0011] The above technical solution uses sliders and grooves to limit the movement of the moving block.

[0012] The present invention is further configured such that the rear end of the top of the moving block is configured as an upward path.

[0013] The above technical solution allows the pulley to move and rise by setting up an upward path.

[0014] The present invention is further configured such that support legs are bolted to the four corners of the base, a base plate is bolted to the top of the support legs, and the bottom of the surface of the top rod passes through the center of the top of the base plate and is slidably sleeved.

[0015] The above technical solution, by setting up support legs and a base plate, can stabilize the lower mold.

[0016] The present invention is further provided that the inner wall of the protective edge is provided with a convex edge.

[0017] The above technical solution involves setting a raised edge to place the upper mold.

[0018] The present invention is further provided with heat insulation plate B at the bottom of the lower mold and the top of the base plate.

[0019] The above technical solution involves installing heat insulation board B to protect the base plate from high temperatures.

[0020] The present invention is further configured such that a limiting block is bolted to the front end of the top of the movable block.

[0021] The above technical solution, by setting a limit block, can prevent the pulley from slipping.

[0022] In summary, this utility model has the following beneficial effects:

[0023] 1. This utility model directly lifts the forging with a push rod, eliminating the need for manual prying. The flange and the die cavity are evenly separated, avoiding the edge cracking of the die cavity caused by traditional prying. It also prevents surface scratches or dimensional deviations caused by skew, improving the yield rate. It can reduce the contact time between the high-temperature forging and the die, reducing the risk of surface oxide layer peeling. Through the mechanical optimization of the bottom unloading mechanism, significant improvements are achieved in efficiency, quality and cost control.

[0024] 2. This utility model absorbs the instantaneous impact force of the molding die, reduces the peak pressure on the die, reduces the risk of die surface crushing, disperses the instantaneous pressure of the press, avoids die deformation caused by frequent impacts, and allows the metal to fill the die cavity evenly, reducing defects such as folding and incomplete filling, improving the yield rate, reducing the probability of abnormal die damage, and decreasing the frequency of production line shutdowns due to die failure. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a front sectional view of the overall structure of this utility model;

[0027] Figure 3 This is a side sectional view of the overall structure of this utility model;

[0028] Figure 4 This is a utility model Figure 3 Enlarged diagram of point A.

[0029] Reference numerals in the attached drawings: 1. Lower mold; 2. Upper mold; 3. Ejector rod; 4. Pulley; 5. Wheel rail; 6. Moving block; 7. Cylinder; 8. Spring A; 9. Spring B; 10. Protective edge; 11. Heat insulation plate A; 12. Heat insulation plate B; 13. Damper; 14. Sleeve; 15. Base; 16. Slider; 17. Slide groove; 18. Support leg; 19. Base plate; 20. Protruding edge; 21. Limiting block. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Example 1:

[0032] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A forging mold for stainless steel flanges includes a lower mold 1. A push rod 3 is slidably sleeved through the center of the bottom of the lower mold 1. A pulley 4 is bolted to the bottom of the push rod 3. A wheel rail 5 is slidably connected to the bottom of the pulley 4. A moving block 6 is provided at the bottom of the wheel rail 5. A cylinder 7 is bolted to the front of a limiting block 21. A spring A8 is sleeved on the surface of the output end of the cylinder 7. A protective edge 10 is welded to the top of the surface of the lower mold 1. A protective mechanism is provided at the top of the protective edge 10. When the cylinder 7 retracts forward, it drives the moving block 6 to move. The pulley 4 moves along the rising path of the moving block 6. The wheel rail 5 limits the movement of the pulley 4. When the pulley 4 rises, it drives the push rod 3 to rise, pushing out the forging. The push rod 3 directly pushes up the forging. When the cylinder 7 retracts backward, the moving block 6 moves backward and the push rod 3 moves downward. The spring A8 can relieve the mechanical fatigue of the cylinder 7, eliminating the need for manual prying. The flange is evenly separated from the mold cavity, avoiding the edge cracking of the mold cavity caused by traditional prying.

[0033] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A base 15 is bolted to the bottom of the cylinder 7, and a slider 16 is bolted to the bottom of the moving block 6. A groove 17 is provided in the middle of the top rear end of the base 15, and the interior of the groove 17 is slidably connected to the surface of the slider 16. By setting the slider 16 and the groove 17, the movement of the moving block 6 can be limited.

[0034] refer to Figure 3 , Figure 4 The rear end of the top of the moving block 6 is set as the upward path. By setting the upward path, the pulley 4 can be moved upward.

[0035] refer to Figure 1 , Figure 2 , Figure 3Support legs 18 are bolted to the four corners of the base 15, and a base plate 19 is bolted to the top of the support legs 18. The bottom of the surface of the push rod 3 passes through the center of the top of the base plate 19 and slides into it. By setting the support legs 18 and the base plate 19, the lower mold 1 can be stabilized.

[0036] refer to Figure 2 , Figure 3 The inner wall of the protective edge 10 is provided with a raised edge 20, which allows the upper mold 2 to be placed.

[0037] refer to Figure 1 , Figure 2 , Figure 3 A heat insulation plate B12 is provided at the bottom of the lower mold 1 and the top of the base plate 19. By providing the heat insulation plate B12, the base plate 19 can be protected from high temperature.

[0038] refer to Figure 3 , Figure 4 A limit block 21 is bolted to the front end of the top of the movable block 6. By setting the limit block 21, the pulley 4 can be prevented from slipping.

[0039] Brief description of the usage process: After the forging is completed, the cylinder 7 retracts forward, driving the moving block 6 to move. The slider 16 and the slide groove 17 can limit the movement of the moving block 6. The pulley 4 moves along the rising path of the moving block 6. The wheel rail 5 limits the movement of the pulley 4. The rising of the pulley 4 drives the push rod 3 to rise, pushing out the forging. The push rod 3 directly lifts the forging. When the cylinder 7 extends and retracts backward, the moving block 6 moves backward and the push rod 3 moves downward. The spring A8 can relieve the mechanical fatigue of the cylinder 7, eliminating the need for manual prying. The flange and the die cavity are evenly separated, avoiding the edge cracking of the die cavity caused by traditional prying. It prevents surface scratches or dimensional deviations caused by skew, improves the yield rate, reduces the contact time between the high-temperature forging and the die, and reduces the risk of surface oxide layer peeling. Through the mechanical optimization of the bottom unloading mechanism, significant improvements are achieved in terms of efficiency, quality and cost control.

[0040] Example 2:

[0041] refer to Figure 1 , Figure 2 , Figure 3A forging die for stainless steel flanges includes a protective mechanism comprising an upper die 2 located on top of a protective edge 10. A heat insulation plate A11 is installed on the top of the upper die 2. Springs B9 are bolted to the four corners of the top of the heat insulation plate A11. A damper 13 is sleeved inside the springs B9. A sleeve 14 is bolted to the top of the springs B9. The lower pressure rod of the press is fixedly connected to the sleeve 14. When the sleeve 14 presses down, the springs B9 contract, pressing down on the upper die 2 and pressing down on the forging. When the sleeve 14 moves upward, the springs B9 rebound. The damper 13 restricts the spring's rebound. The springs B9 drive the upper die 2 upward, absorbing the instantaneous impact force of the pressing die, reducing the peak pressure borne by the die, and reducing the risk of die surface crushing.

[0042] Brief description of the usage process: After the forging is placed in the lower die, the press rod of the press is fixedly connected to the sleeve 14. The sleeve 14 compresses the spring B9, pressing down the upper die 2 to press down on the forging. When the sleeve 14 moves up, the spring B9 rebounds. The damper 13 restricts the spring rebound. The spring B9 drives the upper die 2 to move up, absorbing the instantaneous impact force of the pressing die, reducing the peak pressure on the die, reducing the risk of die surface crushing, dispersing the instantaneous pressure of the press, avoiding die deformation caused by frequent impacts, making the metal fill the die cavity evenly, reducing defects such as folding and incomplete filling, improving the yield rate, reducing the probability of abnormal die damage, and reducing the frequency of production line shutdowns due to die failure.

[0043] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A forging die for a stainless steel flange forging, comprising a lower die (1), characterised in that: A push rod (3) is slidably sleeved through the center of the bottom of the lower mold (1). A pulley (4) is bolted to the bottom of the push rod (3). A wheel rail (5) is slidably connected to the bottom of the pulley (4). A moving block (6) is provided at the bottom of the wheel rail (5). A limit block (21) is bolted to the front end of the top of the moving block (6). A cylinder (7) is bolted to the front of the limit block (21). A spring A (8) is sleeved on the surface of the output end of the cylinder (7). A protective edge (10) is welded to the top of the surface of the lower mold (1). A protective mechanism is provided on the top of the protective edge (10).

2. The stainless steel flange forging die according to claim 1, wherein: The protective mechanism includes an upper mold (2), which is located on top of the protective edge (10). A heat insulation plate A (11) is provided on the top of the upper mold (2). Springs B (9) are bolted to the four corners of the top of the heat insulation plate A (11). A damper (13) is sleeved inside the springs B (9). A sleeve (14) is bolted to the top of the springs B (9).

3. The stainless steel flange forging die according to claim 1, wherein: The bottom of the cylinder (7) is bolted with a base (15), and the bottom of the moving block (6) is bolted with a slider (16). A groove (17) is provided in the middle of the top rear end of the base (15), and the interior of the groove (17) is slidably connected to the surface of the slider (16).

4. The stainless steel flange forging die of claim 1, wherein: The rear end of the top of the moving block (6) is set as an upward path.

5. The stainless steel flange forging die of claim 3, wherein: Support legs (18) are bolted to the four corners of the base (15), and a base plate (19) is bolted to the top of the support legs (18). The bottom of the surface of the top rod (3) passes through the center of the top of the base plate (19) and is slidably sleeved.

6. The stainless steel flange forging die of claim 1, wherein: The inner wall of the protective edge (10) is provided with a raised edge (20).

7. The stainless steel flange forging die of claim 1, wherein: The bottom of the lower mold (1) and the top of the base plate (19) are provided with heat insulation plate B (12).

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