JPH1157921A - Forging roll and forging press line using the roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain forming capacity twice as that at the time of using a forging roll having one set of manipulator tongs by simulatane-ously rough-forming two pieces of works with a first roll set and first manipulator tongs and a second roll set and second manipulator tongs. SOLUTION: One set of die roll is one pair of rolls having four passes at the upper and the lower parts, and tin a manipulator 10 fit-ting the roll set 7 and the second roll set 8 in tandem system, the first manipulator tongs 11 and the second manipulator tongs 12 are provided. The work is roll-formed with this die roll. In such a case, a roll driving device 2 is incorporated in a main body 1 of the forg-ing roll A and connected to a roll driving shaft 3. The first and the second roll sets 7, 8 are fitted to the roll driving shaft 3. In the forging roll A, the work is grasped with each manipulator tongs 11, 12 and the die forging is executed by passing the work through between the upper and the lower die rolls, and the traverse feed is executed at each one rotation of each die roll to execute the die forming by two passes or four passes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a forging roll. In die forging, a billet (material) heated in a heating furnace is passed through a forging roll to create a wasteland, and then forged by a forging press. The present invention relates to a forging roll for creating such waste land of a die forging press.

[0002]

2. Description of the Related Art A typical example of a conventional forging roll will be described with reference to FIGS. 101 is a main body of a forging roll, which has a mechanism for driving upper and lower mold rolls 102 and 103 and a motor. Reference numeral 104 denotes a manipulator for causing the manipulating tongue 105 to perform a lateral feed operation and an advance operation.
The manifold 105 is a device for grasping a workpiece, and one is provided. The upper and lower mold rolls 102 and 103 are rolls engraved in the shape of the product to be formed, and four upper and lower rolls for four passes are attached to the upper and lower roll drive shafts.
106 is a belt for discharging forged waste material.

In the above-described forging roll, the workpiece is gripped by a tongue 105 and the upper and lower mold rolls 102 are held.
, 103 to form a wasteland. The number of molding passes is generally 2 to 4 times. In the case of 2 times, the sheet is passed between two pairs of upper and lower rolls 102 and 103. Passed.

[0004]

When a forging press line using a forging roll requires a plurality of passes, the cycle time of the forging press line depends on the cycle time of the forging roll. The simplest way to improve the cycle time is to install two conventional forging rolls. However, this method has a problem of high installation cost and installation space. Is difficult to adopt. As another known method, there is a forging method described in Japanese Patent Publication No. 4-75106. In this prior art, two-pass rough land forming using forging rolls and in-press forming are performed. However, there is a limit to the improvement of the cycle time, and there is also a limit to the improvement of the product quality (yield improvement, product flaw, etc.) due to press forming after roll forming.

[0005] In view of such circumstances, an object of the present invention is to provide a forging roll which has a low cost, does not increase the installation space, doubles the cycle time, and can effectively utilize an expensive forging press. .

[0006]

According to a first aspect of the present invention, there is provided a forging roll for forming a workpiece gripped by a maniton by a roll set in which a pair of upper and lower mold rolls are arranged by an appropriate number of passes, A first roll set and a second roll set attached to a roll drive shaft of the forging roll in two sets in tandem, a first manifold for a first roll set, and a second manifold for a second roll set; And a manipulator for operating the first and second maniton. The forging roll according to claim 2, further comprising a first pusher for inserting a billet into the first roll set, and a second pusher for inserting a billet into the second roll set, wherein a billet conveyor downstream of a heating furnace is provided. First and second
Between the pusher and the first pusher and the second
A distribution chute for selectively supplying the pusher is provided. The forging roll of claim 3 is
A first pusher that inserts a billet into the first roll set; and a second pusher that inserts a billet into the second roll set. The heating furnace has two outlets and the first and second outlets. A direct feed chute is provided between the two pushers. Claim 4
The forging press line comprises a first delivery conveyor associated with a first roll set provided on the delivery side of the forging roll according to claim 1 and a second delivery conveyor associated with a second roll set. And a charging device for intermittently transporting the billet received from the roll discharge conveyor to the 0-step receiving table of the forging press, wherein the charging device includes a pair of front and rear corresponding to the first and second discharge conveyors. The cradle of
It is characterized in that an appropriate number of sets are attached. Claim 5
The forging press line has a first delivery chute associated with a first roll set provided on the delivery side of the forging roll according to any one of claims 1 to 4, and a second delivery set associated with a second roll set. It is characterized by comprising two delivery chutes, and a delivery conveyor which receives billets from these delivery chutes and directly feeds the billet to the 0-step receiving stand of the forging press.

According to the first aspect of the present invention, one material can be formed by the first roll set and the first mantoning, and another material can be simultaneously formed by the second roll set and the second mantoning. As compared with a forging roll having one single tongue, the forming ability can be doubled.
According to the second aspect of the present invention, the billet can be alternately supplied to the first roll set and the second roll set by the sorting conveyor, so that the structure from the heating furnace to the billet conveyor can be used with the same simple structure as the related art. Equipment cost can be reduced and installation space can be reduced. According to the third aspect of the invention, since two direct feed chutes are provided instead of the distribution chutes, the material supply system is simplified. According to the invention of claim 4, a pair of front and rear pedestals simultaneously receive the two billet formed on the rough land which come out of the forging roll at the same time. Since the billet is fed intermittently in the span, billets are sequentially supplied one by one to the 0-step cradle of the forging press, so they can be supplied without delay to the forging press, improving the productivity of the entire forging press line. it can. According to the fifth aspect of the present invention, since the delivery conveyor for receiving the billet from the two delivery chutes and directly sending the billet to the 0-step receiving stand of the forging press is provided, the charging device can be omitted.

[0008]

Next, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view of a forging roll according to an embodiment of the present invention, FIG. 2 is a side view of the forging roll and forging lines before and after the forging roll, FIG. 3 is a plan view of the forging line, and FIG. FIG. 5 is a side view of the charging device.

First, the forging roll A will be described with reference to FIGS. Reference numeral 1 denotes a main body of the forging roll A, in which a roll driving device 2 is housed, and a roll driving shaft 3 is connected to the roll driving device 2. The roll drive shaft 3 has a length for mounting two sets of mold rolls for four passes per set. Also, since each mold roll is configured as a pair of upper and lower, two rolls are provided in parallel at the top and bottom. The pair of upper and lower roll drive shafts 3 are supported on the drive device side by brackets 4 and the free side ends and intermediate portions are supported by frames 5 and 6.

The mold roll is a set of a pair of upper and lower rolls for four passes, and a first roll set 7 and a second roll set 8 are mounted in tandem. Reference numeral 10 denotes a manipulator, which includes two mantonings, a first mantoning 11 and a second mantoning 12. The first manifold 11 is for the first roll set 7, and the second manifold 12 is for the second roll set 8.

The manipulator 10 has a driving source and a driving mechanism for moving the first and second manitonings 11 and 12 sideways and moving them forward and backward. Reference numeral 13 denotes a horizontal feed screw rod, 14 denotes a horizontal feed motor, and 15 denotes a guide. Although not shown, a known mechanism such as a lever and a link, which are interlocked with the rotation of the roll drive shaft 2 of the forging roll A, is used as a mechanism for moving the manifold forward and backward. The first
A gripping mechanism for gripping a workpiece is attached to the tip of the second maniton 11 or 12, so that a gripping operation can be performed by an operating mechanism such as a hydraulic cylinder 14A mounted on each maniton.

In the above-mentioned forging roll A, the workpiece can be gripped by each of the manitonings 11 and 12 and can be formed by passing the work between the upper and lower die rolls. By performing four-pass molding, desired wasteland molding can be performed.

Since two billets can be formed at the same time by the two roll sets 7 and 8, the productivity is about twice as high as that of a conventional forging roll.

Next, a forging line using the forging roll will be described. 2 and 3, reference numeral 21 denotes an induction heater, which corresponds to a heating furnace described in the claims.

Downstream from the induction heater 21, a chute 22, a billet conveyor 23, and a distribution chute 24 are provided, and a pusher 2 for billet insertion is provided.
5 and 26 are connected. The pusher 25, 26
Are the first pusher 25 for the first roll set 7 and the second
A second pusher 26 for the roll set 8 is connected to the distribution chute 24 when tilted as shown by a solid line, and faces between the upper and lower rolls when turned to a horizontal state as shown by a broken line. .

The distributing chute 24 has a base end fixedly connected to the billet conveyor 23 and a free end shaken to be selectively connected to the first and second pushers 25 and 26.

When the free end of the distribution chute 24 is connected to the first pusher 25, the billet is inserted into the first pusher 25. Next, the first pusher 25 is turned to a horizontal state and pushes the billet toward between the upper and lower mold rolls. The billet is gripped by the first manifold 11 and is formed by the first roll set 7. After the distribution chute 24 is connected to the second pusher 26 and the billet is inserted into the second pusher 26, the second pusher 26 is turned to a horizontal state, and the billet is extruded between the upper and lower mold rolls. The billet is gripped by the second manifold 12 and is formed by the second roll set 8.

On the exit sides of the first and second roll sets 7 and 8, two exit conveyors, that is, a first exit conveyor 27 and a second exit conveyor 28, are provided with each of the roll sets 7, 8 respectively.
Are provided in association with. In addition, each outlet conveyor 2
A billet reversing device 29 was placed on the exit side of 7, 28.
The charging device 30 is provided, and the billet formed in the rough land is transported to the 0-step receiving base 41 of the forging press B by the charging device 30.

As shown in FIGS.
Is composed of sprockets 31 and 32 at both ends and a chain 33 wrapped around them, and cradles 34 and 35 are attached to the chain 33. This pair of cradle 3
4 and 35 are one set. The receiving table 34 is attached to the exit position of the first roll set 7, and the receiving table 35 is attached to the exit position of the second roll set 8. In addition, an appropriate number of sets of the receiving tables 34 and 35 are attached to the chain 33.

The chain 33 is intermittently fed. The billet on the first receiving table 34 is placed on the 0-step receiving table 41, and the transfer feeder 42 of the forging press B is placed.
Then, after the billet is sent to one step, the billet on the second receiving stand 35 can be carried onto the zero-step receiving stand 41.

As described above, since the billets formed in the rough land by the two roll sets 7 and 8 are sequentially supplied to the forging press B, the billet can be supplied twice as much as the conventional one, without disturbing the performance of the forging press B. Can be used and can exhibit high productivity.

Next, another embodiment of the present invention will be described. In the embodiment, one chute 22 and the billet conveyor 2 are provided downstream of the induction heater 21.
3 and a distribution chute 24 are provided and connected to billet insertion pushers 25 and 26, as shown in FIG.
The billet insertion pushers 25 and 26 are connected to the downstream side of the induction heater 21A having two outlets.
You may make it provide the direct-feed chute 22A, 22B of a book. According to this embodiment, the material supply system is simplified.

Further, in the above embodiment, the outlet conveyors 27 and 28 and the charging device 30 are provided on the downstream side of the forging roll A and are connected to the 0-step cradle of the forging press. As shown in FIGS. a) and (b), delivery chutes 27A and 28 are provided downstream of the forging roll.
A and a delivery conveyor 51 that receives billets from the delivery chutes 27A and 28A and directly feeds the billet to the 0-step receiving base 41 of the forging press may be provided. According to this embodiment, the charging device can be omitted.

[0024]

According to the first aspect of the present invention, the first roll set and the first manifold and the second roll set and the second
The two materials can be formed in wasteland at the same time by manitong.
It can exhibit twice the forming ability as compared with a conventional forging roll having one single tongue. According to the invention of claim 2, since the billet can be alternately supplied to the first roll set and the second roll set by the sorting conveyor,
The structure from the heating furnace to the billet conveyor can be simplified, equipment costs can be reduced, and installation space can be reduced. According to the third aspect of the invention, since two direct feed chutes are provided instead of the distribution chutes, the material supply system is simplified. According to the invention of claim 4, a pair of front and rear pedestals simultaneously receive two billets after the formation of the rough land which come out of the forging rolls at the same time, and intermittently feed the billets to the zero-step pedestal of the forging press, thereby obtaining 1 Since the forging press is supplied one by one, the forging press can be supplied without delay, and the productivity of the entire forging press line can be improved. According to the fifth aspect of the present invention, since the delivery conveyor for receiving the billet from the two delivery chutes and directly sending the billet to the 0-step receiving stand of the forging press is provided, the charging device can be omitted.

[Brief description of the drawings]

FIG. 1 is a plan view of a forging roll according to an embodiment of the present invention.

FIG. 2 is a side view of the forging roll and a forging line before and after the forging roll.

FIG. 3 is a plan view of the forging line.

FIG. 4 is a front view of the forging line.

FIG. 5 is a side view of the charging device.

FIG. 6 is a plan view showing another embodiment of a supply system from an induction heater (heating furnace) to a forging roll.

FIG. 7 is a view showing another embodiment of a transfer system from a forging roll to a forging press 0-step receiving pedestal, and (a).
2 is a plan view, and FIG. 2B is a side view taken along line b in FIG.

FIG. 8 is a plan view of a conventional forging roll.

FIG. 9 is a front view of a conventional forging roll.

DESCRIPTION OF SYMBOLS 3 Roll drive shaft 7 1st roll set 8 2nd roll set 10 Manipulator 11 1st manitong 12 2nd manitong 24 Distribution chute 25 1st pusher 26 2nd pusher 30 Charging device 34 1st pedestal 35 First 2 cradle

Claims (5)

[Claims] 1. A forging roll for forming a workpiece gripped by manitoning by a roll set in which a pair of upper and lower mold rolls are arranged by an appropriate number of passes, wherein the forging roll is provided with a roll drive shaft in tandem. A first set of rolls and a second set of rolls,
A forging roll, comprising: a first maniton for a roll set, a second maniton for a second roll set, and a manipulator for operating the first and second maniton. 2. A first pusher for inserting a billet into the first roll set, and a second pusher for inserting a billet into the second roll set, wherein the billet conveyor downstream of the heating furnace is connected to the first and second roll sets. 2. The forging roll according to claim 1, wherein a distribution chute for selectively supplying a billet to the first pusher and the second pusher is provided between the two pushers. 3. A heating furnace having a first pusher for inserting a billet into the first roll set and a second pusher for inserting a billet into the second roll set; The forging roll according to claim 1, wherein a direct feed chute is provided between the first and second pushers. 4. A first delivery conveyor associated with a first roll set provided on the delivery side of the forging roll according to claim 1 and a second delivery conveyor associated with a second roll set. A charging device for intermittently transporting the billet received from the roll discharge conveyor to the 0-step receiving table of the forging press, wherein the charge device includes a pair of front and rear corresponding to the first and second discharge conveyors. A forging press line characterized in that an appropriate number of cradles are attached. 5. A first delivery chute associated with a first roll set provided on the delivery side of the forging roll according to any one of claims 1 to 4, and a second delivery chute associated with a second roll set. A forging press line, comprising: a delivery chute; and a delivery conveyor that receives billets from the delivery chutes and directly feeds the billet to a 0-step cradle of a forging press.