JPH10128487A - Shock absorber for forged product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the shock absorber for a forged product capable of restraining the generation of duet and collapses in the case of transferring the forged product to a carrying means. SOLUTION: This device is provided in a forging machine 1, wherein works are successively carried between plural stages of die set and a prescribed forging is applied, and used in the case of falling the forged product W discharged from the forging machine 1 on a carrying out means 8. In this case, the shock absorber 10 is arranged between the forging machine and the carrying out means and provided with the boom hoisting member 17 receiving the discharged forged product W and rising and falling linked with the movement of the forming machine 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a shock absorber for a forged product.

[0002]

2. Description of the Related Art A forging process capable of forming a forged product having a uniform metal structure and a high toughness as compared with a cast product is based on a metal material heated between a pair of mold sets. It is formed into a desired shape by sandwiching (metal) and pressing strongly, and is used for forging various products. However, the product immediately after forging is in a softer state than at room temperature due to the heat of the product. For this reason,
When such products are discharged from a forging machine and moved to a conveying means such as a conveyor, if they are dropped on the conveying means, various dents and crushes are caused by impact at the time of dropping, and the product value There was a problem that was reduced.

[0003] The present invention has been made in view of the above points, and an object of the present invention is to provide a shock absorber for a forged product capable of suppressing the occurrence of dent scratches and crushing when the forged product is moved to a conveying means. Aim.

[0004]

According to a first aspect of the present invention, there is provided a forging machine for sequentially carrying a workpiece between a plurality of stages of mold sets and performing a predetermined forging process.
A buffering device for a forged product used when dropping a forged product discharged from the forging machine onto a carrying-out means, wherein the buffering device is disposed between the forging machine and the carrying-out means, and is discharged. In addition to receiving the forged product, the forging device has an undulating member that undulates in conjunction with the movement of the forging machine.

According to a second aspect of the present invention, there is provided a forging machine for sequentially transporting a workpiece between a plurality of stages of mold sets and performing a predetermined forging process, and discharging the workpiece from the forging machine. A forging device used for dropping the forged product onto the unloading means, wherein the buffer device is a buffered water tank provided at least at the drop position of the forged product of the unloading means. .

According to a third aspect of the present invention, a workpiece is sequentially conveyed between a plurality of stages of die sets having punches and dies to perform a predetermined forging process, and a final stage metal mold is formed. A forging device for a forging machine provided in a forging machine for removing a forging product from a punch by a drawing means disposed on a mold set side, wherein the buffering device works in conjunction with the movement of the punch-side mold, and A first transmitting means to which the driving force is transmitted, a second transmitting means to which the driving force is transmitted from the first transmitting member to raise and lower the extracting means, and to be provided to the extracting means, and to raise the extracting means A receiving member for receiving the forged product at a position and a pressing member for pressing the forged product received by the receiving member toward the carrying-out means and dropping the forged product are provided.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described in detail with reference to FIGS. First, a forging machine for mounting a shock absorber for a forged product of the present invention will be described. As shown in FIG. 1, a forging machine 1 has a horizontal high-speed equipped with first to fourth-stage mold sets 2 to 5, as shown in FIG. In the forging machine, mold sets 2 to 5 have punches 2a to 5a and dies 2b to 5b. The forging machine 1 grips a predetermined work with a chuck (not shown) and sequentially transfers the work to each of the mold sets 2 to 5,
A plurality of mold sets 2 to 5 are collectively driven by a ram (not shown) in a direction indicated by an arrow in the drawing to sequentially perform different processing on a plurality of works.

At this time, the work is cut into a predetermined length from the rolled steel bar R as shown in the figure, and is sequentially supplied to the forging machine 1. In the forging machine 1, a punching plate 6 is arranged between the punch 5a and the die 5b on the mold set 5 side of the fourth stage, which is the final stage. The punching plate 6 has a through-hole 6a through which the punch 5a penetrates, and pulls out the forged product punched out by the fourth-stage mold set 5 from the punch 5a, thereby avoiding an accident of repeated punching. In FIG. 1, reference numeral 7 denotes a bar stop of the rolled steel bar R supplied to the forging machine 1.

In the forging machine 1, workpieces cut to a predetermined length from the rolled steel bar R are sequentially supplied, and different forging processes are performed on first to fourth-stage mold sets 2 to 5 which are driven collectively. And is discharged outside the machine as a product. Here, it goes without saying that the forging machine 1 may individually drive the mold sets 2 to 5. The buffer device for a forged product of the present invention is used when the processed forged product is dropped onto a carry-out conveyor for carrying out the machine outside, and the buffer device according to the first embodiment is configured as follows.

The shock absorber 10 is disposed between the forging machine 1 and the carry-out conveyor 8 (see FIG. 2). As shown in FIGS. 2 and 3, a cam 11, a cam follower 12, and a driven arm 1 are provided.
3, a shaft 14 and flicker arms 15-17. Here, the carry-out conveyor 8 carries out a forged product as a product to the outside of the machine. The carry-out conveyor 8 may arrange | position the die set 5 side from which a forged product is discharged | emitted under water depending on a use form.

FIG. 2 is a front view of the forging machine 1 of FIG. 1 as viewed from the fourth-stage mold set 5 side, and FIG. 3 is a view of the forging machine 1 as viewed from the punch side to the die side. FIG. 2 is a perspective view of the shock absorber 10. The cam 11 is attached to the other end of the drive shaft 11a, one end of which is connected to a drive source (not shown). This drive source rotates the drive shaft 11a in synchronization with the forward and backward operations of the punches 2a to 5a in the forging machine 1. The cam follower 12 is rotatably supported by the other end of the driven arm 13 having one end connected to the shaft 14. Driven arm 1
3 indicates that the cam follower 12 is
1 is urged to abut the outer periphery of the first member. Axis 14 is
The rotation center of the driven arm 13 and the flicker arms 15 to 17, and the rotation of the cam 11 causes the flicker arm 15 to rotate.
Raise ~ 17. At this time, the flicker arms 15 to
For example, when the flicker arm 17 is described, the retracted ends of the punches 2a to 5a fall horizontally as shown by solid lines in FIG. Then, the flicker arms 15 and 16 operate in the same manner.

The flicker arms 15, 16 are provided at the positions of the second and third mold sets 3, 4, respectively.
It has arms 15a, 16a and sensor plates 15b, 16b attached to the tips on the punch 3a, 4a side. The flicker arms 15, 16 are provided with punches 3a, 4
a is cooled from below by a nozzle (not shown),
It functions as a sensor with a safety device that prevents double hitting of the work. On the other hand, the flicker arm 17 suppresses the occurrence of dents and the like by making the falling distance of the forged product W as small as possible. The flicker arm 17 is provided at the tip of the arm 17a and is disposed immediately below the punching plate 6. And a receiving tray 17b. As shown in FIG. 2, in the flicker arm 17, cooling water is poured from the nozzle 9 disposed above to the tray 17b, and the cooling water does not cause a dent or the like on the forged product W discharged from the forging machine 1. Cool to temperature.

Further, a guide chute 20 is arranged between the shock absorber 10 and the carry-out conveyor 8 as shown in FIG. The guide chute 20 is a cylindrical chute that guides the forged product W discharged together with the water from the tray 17b of the flicker arm 17 to the carry-out conveyor 8 after the punching process in the fourth-stage mold set 5 is completed. The shaft 14 side of the device 10 is cut away so as not to interfere with the flicker arm 17. The guide chute 20 may be covered with a cushioning material 20a made of a copper or steel plate or a rubber plate so as not to make a dent or the like on the forged product W discharged from the forging machine 1. Here, the guide chute 20 transfers the forged product W discharged from the fourth-stage mold set 5 to the flicker arm 1.
It is not necessary if the device can be dropped from the position 7 to an appropriate position on the carry-out conveyor 8.

The shock absorber 10 of the present invention configured as described above is used as follows when the forged product is dropped onto the unloading conveyor 8 for unloading the forged product outside the machine. First, a forged product W punched by the fourth-stage mold set 5 is a punch 5
When a moves backward, it is pulled out from the punch 5a by the punching plate 6. Forged product W extracted from punch 5a
Is gently accommodated in a pan 17b of a substantially horizontal flicker arm 17 disposed directly below the punching plate 6, and the pan 17
The surface is cooled to a temperature at which dents and the like are not generated by the cooling water in b.

Next, at the time of the next operation in which the punch 5a moves forward, the flicker arm 17 rotates about the shaft 14,
After falling from the substantially horizontal state shown by the solid line in FIG. 2 to the position shown by the dotted line, it returns to the original horizontal state again. At this time, the forged product W is transferred to the receiving pan 1 together with the cooling water with the advance of the punch 5a.
7b, guided by the guide chute 20, landed softly on the carry-out conveyor 8, and carried out to a predetermined position outside one forging machine. Therefore, the forged product W is dropped onto the unloading conveyor 8 by the rotation of the flicker arm 17 so that the falling distance becomes as small as possible, and the impact caused by the drop is buffered. .

When the punch 5a advances to the end, the flicker arm 17 is raised from the position shown by the dotted line in FIG.
The forged product W successively discharged from the mold set 5 of the step is gently accommodated in the tray 17b, and the forged product W is cooled by the cooling water in the tray 17b to a temperature at which dent scratches and the like do not occur.

Hereinafter, the shock absorber 10 repeats the same operation as described above, and conveys the forged product W, which is a product, to the conveyor 8.
Buffering the impact caused by the fall to
Improve the product value of the forged product W. Here, the carry-out conveyor 8 may be arranged in a water tank according to the purpose of use, for example, when the forged product W is further cooled.

The shock absorber of the present invention may be configured as shown in FIG. 4 showing a second embodiment. That is, FIG.
Punches 2a to 5a of mold sets 2 to 5 in forging machine 1
FIG. 5 is a side view of the dies 2b to 5b viewed from the side, and shows the shock absorber 2;
Reference numeral 5 denotes a water tank which is disposed below the forging machine 1 and stores cooling water. The shock absorber 25 is provided with a floodgate 26 and an overflow path 27, and is carried out from the fourth-stage mold set 5 side to the first-stage mold set 2 side so as to carry out the forged product. Are arranged, and a guide chute 20 is arranged below the fourth-stage mold set 5.

The buffer 25 adjusts the fall distance of the forged product by appropriately adjusting the water level in the water tank by the sluice gate 26, and can set the fall distance arbitrarily according to the hardness of the surface of the forged product. Therefore, in the shock absorber 25, the forged product which has been processed by the fourth-stage mold set 5 is directly dropped into the cooling water, so that the forged product is dropped onto the carry-out conveyor 8, similarly to the shock absorber 10. The impact can be buffered to suppress dents and the like.

Next, a shock absorber according to a third embodiment of the present invention will be described with reference to FIGS. Here, the same components as those of the first and second embodiments are denoted by the same reference numerals, and detailed description is omitted.
FIG. 5 shows that a punching plate 40 to be described later is connected to the dies 2b to 5b.
FIG. 4 is a perspective view of the side seen from the back side.

As shown in FIG. 6, the shock absorber 30 has a first
A gear 31, a second gear 32, a receiving member 33, and a pushing lever 34 (see FIG. 5) are provided. The first gear 31 has two first racks 31a, first pinions 31b, and support shafts 31c, which are respectively arranged on both sides of the punching plate 40,
The driving force of the punch-side mold is transmitted in conjunction with the movement of the punches 2a to 5a. One end of the first rack 31a is fixed to the punch 5a side, and the other end is attached to the slide guide 36 and arranged horizontally. Here, the slide guide 36 is attached to the frame 35 attached to the dies 2b to 5b of the forging machine 1, and is provided on each side surface of two arms 35a provided in the frame 35 in the horizontal direction. The slide guide 36 has a guide rail 36a attached to the arm 35a and a slider 36b,
The other end of the first rack 31a is attached to the slider 36b. Therefore, the first rack 31a moves forward or backward integrally with the punch 5a. The first pinion 31b is
It is rotatably supported by a support shaft 31c arranged in the horizontal direction.

The second gear 32 has two second racks 32a and two second pinions 32b, respectively.
, And the punching plate 40 is moved up and down. The two second racks 32a are vertically mounted on both sides of the punching plate 40. Each second pinion 32b is rotatably supported on the support shaft 31c together with the first pinion 31b.

Here, the punching plate 40 is a plate that is long in the vertical direction unlike the punching plate 6 of the above-described embodiment. Instead of the through hole 6a, the punch 5a is inserted into the lower side and the forged product W is punched. A withdrawal opening 40a for withdrawing from 5a is formed. Further, the punching plate 40 is provided with guides 41 for guiding a lifting operation to be described later on both lower sides thereof. Receiving member 33
Are mounted on the surfaces of the dies 2b to 5b, which are the back surface of the punching plate 40 substantially at the middle of the drawing opening 40a, with the drawing opening 40a interposed therebetween so that the forged product W drawn from the punch 5a can be held. Have been. The receiving member 33 receives the forged product W at the ascending position of the punching plate 40.

The pushing lever 34 is, as shown in FIG.
It is a lever that pulls out the forged product W that is pulled out from the punch 5 a and held by the receiving member 33 to the left and drops it into the unloading conveyor 8. Here, as shown in FIG. 5, the carry-out conveyor 8 is set such that a drop between the carry-out conveyor 8 and the receiving member 33 is small, and the forged product W which is pushed out of the receiving member 33 by the push-out lever 34 and falls is transferred to the chute 42. Transport.

The shock absorber 30 of the present embodiment is configured as described above, and the forged product W processed by the fourth-stage mold set 5 is buffered and dropped onto the unloading conveyor 8 as follows. Let it. That is, when the fourth gear set 5 processes a workpiece, the first rack 31a rotates the first pinion 31b about the support shaft 31c when the first gear 31 advances with the advance of the punch 5a. . Then, the rotational force of the first pinion 31c is transmitted to the second gear 32,
The pinion 32b rotates, and the punching plate 40 is lowered by the second rack 32a. When the work of the workpiece by the punch 5a is completed and the advance of the punch 5a stops, the lowering of the punching plate 40 also stops.

Next, when the work of the workpiece by the punch 5a is completed and the punch 5a starts to retreat together with the first gear 31, the punching plate 40 starts to rise and the forged product W is pulled out of the punching plate 40. The opening 40a starts to be pulled out of the punch 5a. Next, the punch 5a and the first gear 31
When the retraction is completed, the punching plate 40 stops at the raised position, and the forged product W pulled out from the punch 5a is held by the receiving member 33.

Then, in parallel with the holding of the forged product W by the receiving member 33, the forged product W is pushed to the left in FIGS. 5 and 6 by the pushing lever 34, dropped into the carry-out conveyor 8 and moved to the chute 42. Conveyed. At this time, as shown in FIG. 5, the unloading conveyor 8 is set to have a small drop with respect to the receiving member 33, so that the forged product W lands softly on the unloading conveyor 8, and the impact accompanying the drop is reduced. Since the buffer is provided, the occurrence of dents and the like is suppressed.

The shock absorber 30 of this embodiment merely drops the forged product W from the receiving member 33 to the carry-out conveyor 8 by the pushing lever 34 as described above, and is not cooled by the cooling water. It is preferable to use it when performing normalization processing.

[0029]

As is apparent from the above description, according to the forged product cushioning device of the present invention, it is possible to suppress the occurrence of dent scratches and crushing when the forged product is moved to the conveying means. The product value of the product can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a forging machine to which a shock absorber is attached according to a first embodiment of a shock absorber for a forged product of the present invention.

FIG. 2 is a front view of the forging machine of FIG. 1 as viewed from a mold set side of a fourth stage.

FIG. 3 is a perspective view of the shock absorber when the die side is viewed from the punch side of the forging machine.

FIG. 4 is a side view of a second embodiment of the shock absorber according to the present invention, which is a die set seen from a punch side of a die set in a forging machine.

FIG. 5 is a perspective view showing a third embodiment of the shock absorber according to the present invention, and is a view in which a punched plate of a forging machine is viewed from a back surface side of a die.

FIG. 6 is a schematic configuration diagram of a shock absorber according to a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Forging machine 2-5 Die set 2a-5a Punch 2b-5b Dice 6 Stamping plate 8 Carry-out conveyor 9 Nozzle 10 Buffer device 11 Cam 12 Cam follower 13 Follower arm 14 Axis 15 and 16 Flicker arm 17 Flicker arm 17a Arm 17b Receiving tray REFERENCE SIGNS LIST 20 guide chute 25 buffer device (water tank) 26 floodgate 27 overflow path 30 buffer device 31 first gear (first transmission means) 32 second gear (second transmission means) 33 receiving member 34 pushing lever (pressing member) 35 Frame 36 Slide guide 40 Stamping plate 41 Guide W Forged product

Claims (3)

[Claims] 1. A forging machine for sequentially carrying a workpiece between a plurality of stages of mold sets and performing a predetermined forging process, and is used when a forged product discharged from the forging machine is dropped onto a carrying-out means. A buffering device for a forged product, wherein the buffering device is disposed between the forging machine and the carrying-out means, receives the forged product to be discharged, and rises and falls in conjunction with the movement of the forging machine. A shock absorber for a forged product, comprising an undulating member. 2. A forging machine for sequentially carrying a workpiece between a plurality of mold sets and performing a predetermined forging process, and is used when a forged product discharged from the forging machine is dropped onto a carry-out means. A buffering device for a forged product, wherein the buffering device is a buffer water tank provided at least at a position where the forged product is dropped by the unloading means. 3. A predetermined forging process is performed by sequentially transporting a workpiece between a plurality of mold sets having a punch and a die, and the forged product is removed from the punch by a drawing means arranged on the final mold set side. A buffering device for a forged product provided in a forging machine to be removed, wherein the buffering device is interlocked with the movement of the punch-side mold, and is a first transmitting unit that transmits a driving force of the punch-side mold, A driving force is transmitted from the first transmission member, a second transmission means for raising and lowering the drawing means, a receiving member provided on the drawing means, and a receiving member for receiving the forged product at the raised position of the drawing means, and And a pressing member that presses the received forged product toward the unloading means and drops the forged product.