CN211803614U - Crankshaft is cut edge with pushing away overlap and forging device - Google Patents

Abstract

The utility model discloses a bent axle is cut edge and is used pushing away overlap and forging device, set up the locking groove on the cope match-plate pattern of both sides of the side cut cope match-plate pattern, locking cover one end is fixed in the locking groove, and the other end is fixed with pushing away the overlap board, sets up in the locking cover and pushes away the overlap spring; the edge cutting upper die is provided with a push rod hole, one end of the push rod, which is provided with a convex edge, is arranged in the push rod hole, and the other end of the push rod protrudes out of the molded surface of the edge cutting upper die. The utility model has the advantages that: the length size of the forging piece, the surface quality of residual flash and the like are ensured; the temperature of the non-quenched and tempered steel forging at the beginning of air cooling is ensured, so that the hardness and mechanical performance indexes of the forging are ensured, and the full-automatic production of the whole crankshaft forging line is ensured.

Description

Crankshaft is cut edge with pushing away overlap and forging device

Technical Field

The utility model relates to a forge the field, specifically be a device with excision of forging overlap.

Background

In the crankshaft trimming process, due to the shearing and local upsetting processes of the trimming upper die and the trimming lower die, the flash and the trimming upper die are easy to warp and roll to the trimming upper die due to shearing deformation, and the forge piece is easy to stick to the trimming upper die due to local upsetting. Have the operative employee to glue during production and push and press manually the forging and the overlap of cutting edge upper die, if it is longer to bulldoze the time, can influence the production of next forging, the side cut temperature of next forging probably reduces promptly, leads to the length dimension of the forging after the forging is cut edge and remains the size of overlap unstable, increases subsequent coping and remains the overlap time, is unfavorable for the promotion of whole production line operation beat. If the automatic production is carried out, the fins or the forged piece can be stuck to the trimming upper die, so that the forged piece or the fins cannot be grabbed by a manipulator, the production line is abnormally stopped, and process waste products are generated. For non-quenched and tempered steel forgings, if the production beat and temperature of the trimming procedure cannot be guaranteed, indexes such as hardness and mechanical properties of the forgings cannot be guaranteed.

Disclosure of Invention

In order to solve the technical problem, the utility model aims at providing a crankshaft trimming is with pushing away overlap and forging device, including side cut upper die and side cut lower die, the bent axle forging sets up between side cut upper die and side cut lower die, the side that side cut upper die and side cut lower die and bent axle forging contacted sets up the concave and convex surface that matches with bent axle forging shape; the trimming upper die comprises an upper die plate, and the upper die plate is fixed with the sliding block;

the trimming upper die is fixed on an upper base plate, a cover plate is arranged above the upper base plate, and an upper die plate is connected with a sliding block;

the upper die plates on the two sides of the trimming upper die are provided with stop grooves, one end of a stop sleeve is fixed in the stop grooves, the other end of the stop sleeve is fixed with a flash pushing plate, and a flash pushing spring is arranged in the stop sleeve; the through hole in the middle of the flash pushing plate is matched with the outline of the flash to ensure that the flash is separated from the workpiece after being cut off; the edge cutting upper die is provided with a push rod hole, one end of the push rod, which is provided with a convex edge, is arranged in the push rod hole, and the other end of the push rod protrudes out of the molded surface of the edge cutting upper die. The push rod is used for ejecting a workpiece embedded into the groove of the molded surface of the trimming upper die in the process of trimming the flash, so that the forging is prevented from being adhered to the trimming upper die due to local upsetting;

the push rod hole is internally provided with a push spring, two ends of the push spring are respectively abutted against the push rod and a push rod gland, and the push rod gland is fixed on the upper base plate and is flush with the surface of the upper base plate.

The stop sleeve comprises a stop sliding sleeve, the outer edge end of the bulge of the stop sliding sleeve is arranged in the stop groove, the inner part of the stop sliding sleeve is provided with a flange pushing spring, and the end part of the stop sliding sleeve and the flange pushing plate are fixed through bolts.

The utility model has the advantages that: the problem that the forging is easy to stick to the trimming upper die due to local upsetting is solved, the labor intensity of workers is reduced, the consistency of production beats is ensured, and the surface quality of the forging, such as the length size, the residual flash and the like is ensured; the temperature of the non-quenched and tempered steel forging at the beginning of air cooling is ensured, so that the hardness and mechanical performance indexes of the forging are ensured, and the full-automatic production of the whole crankshaft forging line is ensured. The space that can observe the clearance between the upper and lower mould of side cut is provided in the design, has designed the installation change space of word heads such as stove number, and the installation adjustment is convenient.

Drawings

FIG. 1 is a bottom view of the trimming upper die of the present invention;

FIG. 2 is a schematic cross-sectional view taken at the location A-A of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken at the location B-B of FIG. 1;

FIG. 4 is a schematic view of the push rod and the mold surface;

FIG. 5 is a schematic view of a stop sleeve structure;

in the figure, the device comprises a trimming plate 1, a trimming plate 2, an upper template 3, a trimming upper die 4, a spring stop sleeve 5, a trimming spring 6, a cover plate 7, a pushing ejector rod 8, a pushing spring 9, an upper backing plate 10, an ejector rod gland 11 and a sliding block.

Detailed Description

The utility model is described in detail with the following drawings, as shown in the figures, the utility model comprises an upper trimming die 3 and a lower trimming die (not shown in the figures), a crankshaft forge piece is arranged between the upper trimming die and the lower trimming die, and one side of the upper trimming die and the lower trimming die, which is contacted with the crankshaft forge piece, is provided with a concave-convex surface 31 matched with the shape of the crankshaft forge piece; the trimming upper die comprises an upper die plate 2, and the upper die plate 2 is fixed with a sliding block 11;

the trimming upper die 3 is fixed on an upper backing plate 9, a cover plate 6 is arranged above the upper backing plate 9, and the upper die plate 2 is connected with a sliding block 11;

the upper die plates 2 on the two sides of the trimming upper die 3 are provided with stop grooves, one end of a stop sleeve 4 is fixed in the stop grooves, the other end of the stop sleeve is fixed with the flash pushing plate 1, and a flash pushing spring 5 is arranged in the stop sleeve; the through hole in the middle of the flash pushing plate 1 is matched with the outline of the flash to ensure that the flash is separated from the workpiece after being cut off; the trimming upper die 3 is provided with a push rod hole, one end of the push rod 7 with a convex edge is arranged in the push rod hole, and the other end 71 of the push rod 7 protrudes above the molded surface 31 of the trimming upper die. The push rod is used for ejecting a workpiece embedded into the groove of the molded surface of the trimming upper die in the process of trimming the flash, so that the forging is prevented from being adhered to the trimming upper die due to local upsetting;

set up in the push rod hole and push away a spring 8, push away a spring 8's both ends respectively with push rod 7 and ejector pin gland 10 butt, ejector pin gland 10 is fixed in on the upper padding plate 9, and keep level with the surface of upper padding plate 9.

The stop sleeve 4 comprises a stop sliding sleeve 41, the convex outer edge end 42 of the stop sliding sleeve 41 is arranged in the stop groove 21, the inner part 41 of the stop sliding sleeve is provided with a push flash spring 5, and the end part of the stop sliding sleeve is fixed with the push flash plate 1 through a bolt.

The utility model discloses design on original cut off die basis and push away overlap board, apron, upper padding plate, spring locking cover, push away the overlap spring, push away a ejector pin, ejector pin gland. The method is characterized in that the existing die holder die space is utilized, an additional ejection mechanism and the like are not needed to be added, grooves for containing spring stop sleeves are designed on two sides of the trimming upper die plate, corresponding bolt hole grooves are formed in the trimming pushing plate, the trimming pushing springs are placed in the spring stop sleeves, the spring stop sleeves with the springs are placed in the grooves corresponding to the trimming upper die plate, and the stroke of the spring base and the types, the elasticity and the quantity of the springs are determined through calculation. And fixing a cover plate compression spring on the upper template, and connecting the flash pushing plate with the upper template through bolts. The press sliding block moves downwards, the flash plate is pushed to press the flash, the trimming upper die enters the lower die to finish trimming, the press sliding block moves upwards, and the spring releases elasticity to push the flash to be placed on the parting surface of the trimming lower die through the flash plate.

The trimming upper die is connected with the cover plate through the upper base plate, the cover plate is connected with the trimming upper die plate, and the trimming upper die plate is connected with the press slide block. 2-5 push rod holes are designed in the trimming upper die and the upper backing plate according to the length of the forged piece, the push piece ejector rod is placed in the push rod hole, when the press machine slide block moves downwards, the push piece ejector rod spring is compressed, the elasticity reaches the maximum at the bottom dead point, and when the press machine slide block moves upwards, the elasticity is released to push the forged piece downwards and fall into the piece connecting device. The through hole in the middle of the flash pushing plate is required to be designed to be basically consistent with the shape of the forged piece, the whole contour is 3-5mm larger than the periphery of the hot forged piece, and the thrust is guaranteed to be allowed to act on the flash.

The used flash pushing spring and the used pushing spring are generally rectangular springs, and because the springs are square wires, the spring strength of the springs is much larger than that of a common round spring, and the fatigue resistance of the springs is better than that of a common spring.

The stroke space of the spring stop sleeve is larger than 15-20mm of the cutting depth, and the effective stroke of the flash-removing plate is larger than 15-20mm of the cutting depth. The flash-removing plate spring is used symmetrically.

The original height of the ejector rod of the push piece is 15-20mm higher than that of the cavity.

Effect of the utility model

According to the trimming die device that this mode designed, utilize current die holder mould space, need not to add other equipment etc. when guaranteeing to cut edge and accomplish, the stable pushing away of overlap is put on the edge face of cutting edge, and the forging receives the effect of ejector pin thrust, and the stable accurate material device that falls down provides the guarantee for the automated production of side cut process. The upper moving surface and the lower moving surface of the spring stop sleeve in the upper die plate are in clearance fit, and the connecting surface of the spring stop sleeve and the flash pushing plate is also in clearance fit, so that a small clearance is reserved between the shape of a pushing piece of the flash pushing plate connected with the spring stop sleeve and the outline of a forged piece, no warping, no deformation and other delayed dropping conditions are ensured when the flash is pushed down, the position of the pushed flash is accurate, and the guarantee is provided for a manipulator to grab the flash. And pushing the forged piece ejector rod, and precisely pushing the forged piece into the connecting piece device by releasing the elastic force of the spring in the trimming upper die at the moment that trimming of the forged piece is completed and the pressure slide block moves upwards. At the moment, the labor intensity of workers is reduced, the consistency of production takt time is ensured, the surface quality of the forged piece, such as length size, residual flash and the like, is ensured, and the temperature of the non-quenched and tempered steel forged piece for starting air cooling is ensured, so that the hardness and mechanical performance indexes of the forged piece are ensured. And the full-automatic production of the whole crankshaft forging production line is ensured. The space for observing the gap between the trimming convex-concave die is provided in the design, the installation and replacement space of the furnace size and other character heads is designed, and the installation and the adjustment are convenient.

The utility model discloses a use method:

changing a furnace number word head and a class group number word head, putting the trimming upper die into the trimming upper die by using a push piece ejector rod, adding a push piece spring, and putting a push piece ejector rod gland in the upper base plate for pressing; and (3) putting the stop sleeve provided with the spring into the upper template, installing the cover plate, and connecting the flash pushing plate with the spring stop sleeve through a bolt.

The device can realize partial universality, and different products only need to replace the edge pushing plate, the edge cutting upper die and the upper backing plate.

Claims (2)

1. A trimming pushing and forging device for trimming a crankshaft comprises an upper trimming die and a lower trimming die, wherein the crankshaft forging is arranged between the upper trimming die and the lower trimming die, and concave-convex surfaces matched with the shape of the crankshaft forging are arranged on the sides, which are in contact with the crankshaft forging, of the upper trimming die and the lower trimming die; the trimming upper die comprises an upper die plate, and the upper die plate is fixed with the sliding block; the method is characterized in that:

the trimming upper die is fixed on an upper base plate, a cover plate is arranged above the upper base plate, and an upper die plate is connected with a sliding block;

the upper die plates on the two sides of the trimming upper die are provided with stop grooves, one end of a stop sleeve is fixed in the stop grooves, the other end of the stop sleeve is fixed with a flash pushing plate, and a flash pushing spring is arranged in the stop sleeve; the through hole in the middle of the flash pushing plate is matched with the outline of the flash; the trimming upper die is provided with a push rod hole, one end of the push rod with a convex edge is arranged in the push rod hole, and the other end of the push rod is protruded out of the molded surface of the trimming upper die; the push rod hole is internally provided with a push spring, two ends of the push spring are respectively abutted against the push rod and a push rod gland, and the push rod gland is fixed on the upper base plate and is flush with the surface of the upper base plate.

2. The crankshaft trimming flash and forging device according to claim 1, wherein:

the stop sleeve comprises a stop sliding sleeve, the outer edge end of the bulge of the stop sliding sleeve is arranged in the stop groove, the inner part of the stop sliding sleeve is provided with a flange pushing spring, and the end part of the stop sliding sleeve and the flange pushing plate are fixed through bolts.

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