Crankshaft forging die for marine internal combustion engine

Abstract

The invention provides a crankshaft forging die for a ship internal combustion engine, and relates to the technical field of forging dies, the crankshaft forging die comprises a die pressing mechanism, one side of the die pressing mechanism is provided with a feeding mechanism, and the other side of the die pressing mechanism is provided with a material taking mechanism; the mold pressing mechanism comprises a fixed base, the upper surface of the fixed base is fixedly connected with a lower fence, and the upper surface of the fixed base is fixedly connected with a heating stove. By means of the technical scheme, the threaded rod is driven by the driving motor to rotate, and the threaded rod can drive the matching rod and the toothed plate to horizontally move along the sliding block; a toothed plate rotates to drive a bevel gear, a fixing rod and an assembling plate to rotate, meanwhile, the bevel gear can only rotate by degrees through limiting of a second limiting rod, meanwhile, the bevel gear can be located in a limiting barrel to ascend and descend, and the assembling plate is driven by a second air cylinder to ascend and descend; and after the workpiece is cooled, the sucker on the assembly plate can perform sucker adsorption on the forged crankshaft and drive the threaded rod to rotate in the opposite direction, and discharging of the crankshaft is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of forging dies, in particular to a crankshaft forging die for a marine diesel engine. BACKGROUND

[0002] The movement of the ship is realized by driving the propeller to rotate, and the crankshaft is the most important component in the engine. It bears the force transmitted by the connecting rod and converts it into torque through the crankshaft output to drive other accessories on the engine. The crankshaft is subjected to the combined action of centrifugal force of rotating mass, periodically varying gas inertia force and reciprocating inertia force, so that the crankshaft bears bending and torsional load. Therefore, the crankshaft requires sufficient strength and stiffness, and most of the crankshafts are produced by forging die.

[0003] At present, in the production process of the crankshaft by using the forging die in the prior art, the raw material needs to be heated and then put into the forging die for forging and die casting. After die casting, the crankshaft is taken out of the die. The traditional die does not have the functions of feeding and taking out materials, which leads to the need to equip feeding and taking-out equipment to assist use, thereby increasing the cost of crankshaft forging and reducing the production efficiency of the forging die. Therefore, the present application provides a crankshaft forging die for a marine diesel engine. SUMMARY

[0004] The purpose of the present application is to solve the problem in the prior art that the raw material needs to be heated and then put into the forging die for forging and die casting. After die casting, the crankshaft is taken out of the die. The traditional die does not have the functions of feeding and taking out materials, which leads to the need to equip feeding and taking-out equipment to assist use, thereby increasing the cost of crankshaft forging and reducing the production efficiency of the forging die.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a crankshaft forging die for a marine diesel engine, comprising a die pressing mechanism, one side of the die pressing mechanism is provided with a feeding mechanism, and the other side of the die pressing mechanism is provided with a material taking-out mechanism; the die pressing mechanism comprises a fixed base, a lower surrounding fence is fixedly connected to the upper surface of the fixed base, a heating stove is fixedly connected to the upper surface of the fixed base, the heating stove is located in the lower surrounding fence, an outer fixed block is fixedly connected to the upper surface of the lower surrounding fence, installation grooves are formed in the two side surfaces of the outer fixed block, a limiting cylinder is fixedly connected in one side of the installation groove, a lower die is fixedly connected in the outer fixed block, an extension plate is fixedly connected to the outer side wall of the outer fixed block, and a first limiting rod is fixedly connected to the two sides of the upper surface of the extension plate.

[0006] In at least some embodiments, the upper end of the first limiting rod is fixedly connected with an extension block, the one side of the extension block is fixedly connected with an upper fixed plate, the lower surface of the upper fixed plate is fixedly connected with an upper die, the upper die is located above the lower die, an electric push rod is fixedly connected to the middle part of the upper surface of the extension plate, and the output shaft of the electric push rod is fixedly connected to the extension block.

[0007] In at least some embodiments, the feeding mechanism comprises two fixed supports, the lower end of each of the two fixed supports is fixedly connected with a rotating rod, the rotating rod is rotatably installed on the inner wall of the installation slot, the upper end of each of the two fixed supports is provided with an installation hole, and a reinforcing cross bar is fixedly connected between the two fixed supports.

[0008] In at least some embodiments, a central shaft is rotatably installed on one end of the upper surface of each of the two fixed supports, a side transmission rod is fixedly connected to one side of the central shaft, an installation rod is fixedly connected to the upper end of the side transmission rod, the installation rod is installed in the installation hole, a clamp is fixedly connected to one end of the inner side of the installation rod, and a push-pull handle is fixedly connected to the lower end of each of the two fixed supports.

[0009] In at least some embodiments, installation metal plates are fixedly connected to the inner side surfaces of the two side transmission rods, a connecting rod is rotatably installed on one end of the inner side of each of the two installation metal plates, a connecting seat is rotatably installed on the lower end of the connecting rod, a first air cylinder is fixedly connected to the lower end of the connecting seat, and the first air cylinder is fixedly connected to one side surface of the reinforcing cross bar.

[0010] In at least some embodiments, the material taking mechanism comprises a helical gear, the helical gear is rotatably installed in a limiting cylinder, a toothed plate is meshingly connected to one side of the helical gear, a matching rod is fixedly connected to one side surface of the toothed plate, a threaded rod is meshingly connected to the matching rod, and a driving motor is fixedly connected to one end of the threaded rod.

[0011] In at least some embodiments, a motor support is fixedly connected to the outer side of the driving motor, the motor support is fixedly connected to the outer side wall of the outer fixed block, a lower sliding rail is fixedly connected to the lower surface of the toothed plate, a sliding block is slidingly installed in the lower sliding rail, the sliding block is fixedly connected to the outer side wall of the outer fixed block, and a fixing rod is fixedly connected to the upper surface of the helical gear.

[0012] In at least some embodiments, a second air cylinder is fixedly connected to the upper end of the fixing rod, a limiting groove is formed in the surface of the fixing rod, a second limiting rod is slidingly installed in one side of the limiting groove, the second limiting rod is fixedly connected to the outer side wall of the outer fixed block, an assembly plate is fixedly connected to the output shaft of the second air cylinder, and a fixing plate is fixedly connected to the lower surface of the assembly plate.

[0013] In at least some embodiments, a suction disc is installed at each corner of the fixing plate, a plurality of evenly distributed ventilation holes are formed in the upper surface of the assembly plate, a fan is installed in each ventilation hole, an air outlet groove is formed in the middle of the fixing plate, and the air outlet groove is located below the fan.

[0014] Compared with the prior art, the application has the following advantages and positive effects: 1. In this invention, the fixed bracket can be rotated around the rotating rod by pushing and pulling the handle. Activating the first cylinder can rotate the connecting rod around the connecting seat. The connecting rod rotates around the central axis via the mounting sheet metal and side transmission rods. The mounting rods at one end of the two side transmission rods can clamp the raw material using a clamp, thus loading and conveying the raw material into the lower mold. 2. In this invention, the threaded rod is driven to rotate by a drive motor. The threaded rod can drive the mating rod and the toothed plate to move horizontally along the slider. The rotation of the toothed plate can drive the helical gear, the fixed rod and the assembly plate to rotate. At the same time, the helical gear can only rotate at a certain degree by the limit rod of the second limit rod. The helical gear can also be raised and lowered in the limit cylinder. The assembly plate is raised and lowered by the second cylinder. After the workpiece cools down, the suction cup on the assembly plate can be used to suction the forged crankshaft and drive the threaded rod to rotate in the opposite direction to realize the unloading of the crankshaft. Attached Figure Description

[0015] Figure 1 This invention provides a schematic perspective view of one side structure of a crankshaft forging die for marine internal combustion engines; Figure 2 This invention provides a schematic perspective view of the other side of the overall structure of a crankshaft forging die for a marine internal combustion engine; Figure 3 This invention provides a schematic perspective view of one side of the pressing mechanism of a crankshaft forging die for a marine internal combustion engine; Figure 4 This invention provides a schematic perspective view of the other side of the pressing mechanism of a crankshaft forging die for a marine internal combustion engine; Figure 5 This invention provides a schematic perspective view of a combined structure of a feeding mechanism and a retrieving mechanism for a crankshaft forging die for a marine internal combustion engine. Figure 6 This invention provides a schematic perspective view of the overall structure of the feeding mechanism for a crankshaft forging die for a marine internal combustion engine; Figure 7 This invention provides a schematic perspective view of the overall structure of the material handling mechanism for a crankshaft forging die for a marine internal combustion engine. Figure 8 This invention presents a schematic perspective view of the material handling mechanism of a crankshaft forging die for a marine internal combustion engine.

[0016] Legend: 100, mold mechanism; 200, feeding mechanism; 300, material taking mechanism; 101, fixed base; 102, lower fence; 103, outer fixed block; 104, limiting cylinder; 105, mounting groove; 106, lower mold; 107, upper mold; 108, upper fixed plate; 109, extension block; 110, extension plate; 111, No. 1 limiting rod; 112, electric push rod; 113, heating stove; 201, fixed support; 202, mounting hole; 203, mounting rod; 204, clamp; 205, side transmission rod; 206, mounting sheet metal; 207, center shaft; 208, reinforcing cross bar; 209, push-pull handle; 210, No. 1 air cylinder; 211, connecting seat; 212, connecting rod; 213, rotating rod; 301, toothed plate; 302, matching rod; 303, lower slide rail; 304, sliding block; 305, threaded rod; 306, drive motor; 307, motor support; 308, helical gear; 309, fixed rod; 310, limiting groove; 311, No. 2 air cylinder; 312, No. 2 limiting rod; 313, assembly plate; 314, suction cup; 315, fixed plate; 316, fan; 317, ventilation hole; 318, air outlet groove. DETAILED DESCRIPTION

[0017] In order to enable persons skilled in the art to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described below in conjunction with the accompanying drawings and examples. It should be noted that the examples of the present application and the features in the examples can be combined with each other without conflict.

[0018] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, and therefore, the present application is not limited to the specific examples disclosed in the following description.

[0019] In the prior art, the movement of the ship is realized by driving the propeller to rotate, and the crankshaft is the most important component in the engine. Most of the crankshafts are produced by forging die to realize forging and pressing. When the forging die is used to produce the crankshaft, the raw material needs to be heated and then put into the forging die for forging and die casting. After die casting, the crankshaft is taken out of the die. The traditional die does not have the functions of feeding and taking material, which leads to the need to equip feeding and taking equipment to assist the use, thereby increasing the cost of crankshaft forging and reducing the production efficiency of the forging die.

[0020] Therefore, the present invention aims at least in the following ways: since the raw materials need to be preheated before forging, and the workpiece can be fed through the feeding mechanism 200, the manual labor is saved while enhancing the safety of the mold. When the raw materials are placed on the lower mold 106, the workpiece can be forged through the pressing mechanism 100, and the processed crankshaft can be automatically removed from the lower mold 106 through the suction cup 314 by the material handling mechanism 300, thereby realizing automated unloading, saving manual labor, and improving the applicability and versatility of the forging mold.

[0021] Example, according to Figures 1-8 This invention provides a crankshaft forging die for a marine internal combustion engine, comprising a pressing mechanism 100, a feeding mechanism 200 mounted on one side of the pressing mechanism 100, and a material-removing mechanism 300 mounted on the other side of the pressing mechanism 100; as shown... Figures 3-4 As shown, the molding mechanism 100 includes a fixed base 101, a lower enclosure 102 fixedly connected to the upper surface of the fixed base 101, a heating stove 113 fixedly connected to the upper surface of the fixed base 101, the heating stove 113 being located inside the lower enclosure 102, an outer fixing block 103 fixedly connected to the upper surface of the lower enclosure 102, mounting grooves 105 being provided on both sides of the outer fixing block 103, a limiting cylinder 104 fixedly connected to one side of the mounting groove 105, a lower mold 106 fixedly connected to the outer fixing block 103, an extension plate 110 fixedly connected to the outer side wall of the outer fixing block 103, and a first limiting rod 111 fixedly connected to both sides of the upper surface of the extension plate 110.

[0022] like Figures 3-4 As shown, an extension block 109 is fixedly connected to the upper end of the first limiting rod 111. An upper fixing plate 108 is fixedly connected to one side of the extension block 109. An upper mold 107 is fixedly connected to the lower surface of the upper fixing plate 108. The upper mold 107 is located above the lower mold 106. An electric push rod 112 is fixedly connected to the middle of the upper surface of the extension plate 110. The output shaft of the electric push rod 112 is fixedly connected to the extension block 109. The lower mold 106 can be preheated by the heating stove 113, which facilitates the subsequent forging of the raw material. The electric push rod 112 is started to drive the upper mold 107 to rise and fall along the first limiting rod 111. When the upper mold 107 and the lower mold 106 come into contact, the raw material can be forged through the gap between them.

[0023] like Figure 6As shown, the feeding mechanism 200 includes two fixed supports 201, the lower end of the two fixed supports 201 is fixedly connected with a rotating rod 213, the rotating rod 213 is rotatably installed on the inner wall of the installation slot 105, the upper end of the two fixed supports 201 is provided with an installation hole 202, the two fixed supports 201 are fixedly connected with a reinforcing cross rod 208, the upper surface of the two fixed supports 201 is rotatably installed with a central shaft 207 at one end, the central shaft 207 is fixedly connected with a side transmission rod 205 at one side, the upper end of the side transmission rod 205 is fixedly connected with an installation rod 203, the installation rod 203 is installed in the installation hole 202, the inside of the installation rod 203 is fixedly connected with a clamp 204 at one end, the lower end of the fixed support 201 is fixedly connected with a push-pull handle 209, the inside surface of the two side transmission rods 205 is fixedly connected with an installation sheet metal 206, the inside of the two installation sheet metals 206 is rotatably installed with a connecting rod 212 at one end, the lower end of the connecting rod 212 is rotatably installed with a connecting seat 211, the lower end of the connecting seat 211 is fixedly connected with a first air cylinder 210, the first air cylinder 210 is fixedly connected with the side surface of the reinforcing cross rod 208, the fixed support 201 can be rotated around the rotating rod 213 by the push-pull handle 209, the connecting rod 212 can be rotated around the connecting seat 211 by starting the first air cylinder 210, the connecting rod 212 is rotated around the central shaft 207 by the installation sheet metal 206 and the side transmission rod 205, the installation rod 203 at one end of the two side transmission rods 205 can realize clamping of the raw materials, realizes feeding of the raw materials and conveying them into the lower mold 106.

[0024] As Figures 7-8As shown, the taking mechanism 300 includes a bevel gear 308 rotatably mounted in the limiting barrel 104, one side of the bevel gear 308 is engaged with a toothed plate 301, one side surface of the toothed plate 301 is fixedly connected with a matching rod 302, the matching rod 302 is engaged with a threaded rod 305, one end of the threaded rod 305 is fixedly connected with a drive motor 306, the outer side of the drive motor 306 is fixedly connected with a motor support 307, the motor support 307 is fixed to the outer side wall of the outer fixed block 103, the lower surface of the toothed plate 301 is fixedly connected with a lower sliding rail 303, the sliding block 304 is slidingly installed in the lower sliding rail 303, the sliding block 304 is fixed to the outer side wall of the outer fixed block 103, the upper surface of the bevel gear 308 is fixedly connected with a fixed rod 309, the upper end of the fixed rod 309 is fixedly connected with a No. 2 air cylinder 311, the surface of the fixed rod 309 is provided with a limiting groove 310 at the upper end, a No. 2 limiting rod 312 is slidingly installed at one side of the limiting groove 310, the No. 2 limiting rod 312 is fixed to the outer side wall of the outer fixed block 103, the output shaft of the No. 2 air cylinder 311 is fixedly connected with an assembly plate 313, the lower surface of the assembly plate 313 is fixedly connected with a fixed plate 315, the suction cups 314 are installed at the four corners of the fixed plate 315, a plurality of ventilation holes 317 are formed in the upper surface of the assembly plate 313, a fan 316 is installed in each ventilation hole 317, and an air outlet groove 318 is formed in the middle of the fixed plate 315, the air outlet groove 318 is located below the fan 316. The drive motor 306 drives the threaded rod 305 to rotate, the threaded rod 305 can drive the matching rod 302 and the toothed plate 301 to move horizontally along the sliding block 304, the rotation of the toothed plate 302 can drive the bevel gear 308, the fixed rod 309 and the assembly plate 313 to rotate, and the limiting of the No. 2 limiting rod 312 allows the bevel gear 308 to rotate only 180°, the bevel gear 308 can be lifted in the limiting barrel 104, and the assembly plate 313 is driven by the No. 2 air cylinder 311 to lift, after the workpiece is cooled, the suction cups 314 on the assembly plate 313 can suck the forged crankshaft, and the threaded rod 305 is rotated in the opposite direction to realize the blanking of the crankshaft, the heating stove 113 can preheat the lower die 106, facilitating the subsequent forging of the raw material, the electric push rod 112 drives the upper die 107 to lift along the No. 1 limiting rod 111, when the upper die 107 and the lower die 106 contact, the gap between the two can be used for forging the raw material.

[0025] The working principle of the present application is that the fixed support 201 can be rotated around the rotating rod 213 by pushing and pulling the handle 209, the connecting rod 212 can be rotated around the connecting seat 211 by starting the first air cylinder 210, the connecting rod 212 can be rotated around the center shaft 207 through the installation sheet metal 206 and the side transmission rod 205, the installation rod 203 at one end of the two side transmission rods 205 can realize clamping of the raw material through the clamp 204, the raw material can be fed and conveyed into the lower mold 106, the fixed support 201 can be rotated around the rotating rod 213 by pushing and pulling the handle 209, the connecting rod 212 can be rotated around the connecting seat 211 by starting the first air cylinder 210, the connecting rod 212 can be rotated around the center shaft 207 through the installation sheet metal 206 and the side transmission rod 205, the installation rod 203 at one end of the two side transmission rods 205 can realize clamping of the raw material through the clamp 204, the raw material can be fed and conveyed into the lower mold 106, the lower mold 106 can be preheated through the heating stove 113, which is convenient for subsequent forging forming of the raw material, the upper mold 107 can be lifted along the first limiting rod 111 by starting the electric push rod 112, the raw material can be forged and formed through the gap between the upper mold 107 and the lower mold 106, the screw rod 305 can drive the matching rod 302 and the toothed plate 301 to move horizontally along the sliding block 304 by driving the motor 306 to rotate the screw rod 305, the toothed plate 302 can rotate to drive the bevel gear 308, the fixed rod 309 and the assembly plate 313 to rotate, the bevel gear 308 can only rotate 180° through the limiting of the second limiting rod 312, the bevel gear 308 can be lifted in the limiting cylinder 104, and the assembly plate 313 can be lifted by driving the assembly plate 313 through the second air cylinder 311, the suction cup 314 on the assembly plate 313 can suck and adsorb the forged crankshaft after the workpiece is cooled, and the screw rod 305 can be rotated in the opposite direction, so as to realize unloading of the crankshaft.

[0026] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments shall fall within the protection scope of the present application.

Claims

1. A crankshaft forging die for a marine internal combustion engine, comprising a die pressing mechanism (100), characterized in that: one side of the die pressing mechanism (100) is provided with a feeding mechanism (200), and the other side of the die pressing mechanism (100) is provided with a material taking mechanism (300); the die pressing mechanism (100) comprises a fixed base (101), the upper surface of the fixed base (101) is fixedly connected with a lower fence (102), the upper surface of the fixed base (101) is fixedly connected with a heating stove (113), the heating stove (113) is located in the lower fence (102), the upper surface of the lower fence (102) is fixedly connected with an outer fixed block (103), the both sides of the outer fixed block (103) are provided with mounting grooves (105), a limiting cylinder (104) is fixedly connected in one side of the mounting groove (105), a lower die (106) is fixedly connected in the outer fixed block (103), an extension plate (110) is fixedly connected to the outer side wall of the outer fixed block (103), and a first limiting rod (111) is fixedly connected to the both sides of the upper surface of the extension plate (110). A extending block (109) is fixedly connected to the upper end of the first limiting rod (111), an upper fixed plate (108) is fixedly connected to one side of the extending block (109), an upper die (107) is fixedly connected to the lower surface of the upper fixed plate (108), the upper die (107) is located above the lower die (106), an electric push rod (112) is fixedly connected to the middle of the upper surface of the extension plate (110), and the output shaft of the electric push rod (112) is fixedly connected to the extending block (109).

2. The crankshaft forging die for a marine engine according to claim 1, characterized by: The feeding mechanism (200) comprises two fixed supports (201), the lower ends of the two fixed supports (201) are fixedly connected with rotating rods (213), the rotating rods (213) are rotatably installed on the inner wall of the mounting groove (105), mounting holes (202) are formed in the upper ends of the two fixed supports (201), and a reinforcing cross rod (208) is fixedly connected between the two fixed supports (201).

3. The crankshaft forging die for a marine engine according to claim 1, characterized in that: A central shaft (207) is rotatably installed on one end of the upper surface of the two fixed supports (201), a side transmission rod (205) is fixedly connected to one side of the central shaft (207), an installation rod (203) is fixedly connected to the upper end of the side transmission rod (205), the installation rod (203) is installed in the mounting hole (202), a clamp (204) is fixedly connected to one end of the inner side of the installation rod (203), and a push-pull handle (209) is fixedly connected to the lower end of the fixed support (201).

4. The crankshaft forging die for a marine engine according to claim 3, characterized in that: Installation metal plates (206) are fixedly connected to the inner sides of the two side transmission rods (205), connecting rods (212) are rotatably installed on one end of the inner sides of the two installation metal plates (206), connecting seats (211) are rotatably installed on the lower ends of the connecting rods (212), a first air cylinder (210) is fixedly connected to the lower end of the connecting seat (211), and the first air cylinder (210) is fixedly connected to one side surface of the reinforcing cross rod (208).

5. The crankshaft forging die for a marine engine according to claim 4, characterized in that: ​ 6. The crankshaft forging die for a marine engine according to claim 1, characterized by: Said taking mechanism (300) includes bevel gear (308), bevel gear (308) is rotatably installed in limit cylinder (104), one side of bevel gear (308) is engaged and is connected with toothed plate (301), one side surface of toothed plate (301) is fixedly connected with matching rod (302), matching rod (302) is engaged and is connected with threaded rod (305), one end of threaded rod (305) is fixedly connected with driving motor (306).

7. The crankshaft forging die for a marine engine according to claim 6, characterized in that: The outer side of driving motor (306) is fixedly connected with motor support (307), the outer side wall of outer fixed block (103) is fixedly connected with motor support (307), the lower surface of toothed plate (301) is fixedly connected with lower slide rail (303), the lower slide rail (303) is slidably installed in sliding block (304), the outer side wall of outer fixed block (103) is fixedly connected with sliding block (304), the upper surface of bevel gear (308) is fixedly connected with fixed rod (309).

8. The crankshaft forging die for a marine engine according to claim 7, characterized by: The upper end of fixed rod (309) is fixedly connected with No. 2 air cylinder (311), the surface of fixed rod (309) is provided with limiting groove (310) on the upper end, the limiting groove (310) is slidably installed with No. 2 limiting rod (312) on one side, the outer side wall of outer fixed block (103) is fixedly connected with No. 2 limiting rod (312), the output shaft of No. 2 air cylinder (311) is fixedly connected with assembly plate (313), the lower surface of assembly plate (313) is fixedly connected with fixed plate (315).

9. The crankshaft forging die for a marine engine according to claim 8, characterized by: Sucking disc (314) is installed at the four corners of fixed plate (315), a plurality of evenly distributed ventilation holes (317) are formed in the upper surface of assembly plate (313), a fan (316) is installed in each ventilation hole (317), and an air outlet groove (318) is formed in the middle of fixed plate (315).

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