JPH0244915Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a device for intermittently feeding workpieces heated by a heating device to a forging device one by one.

[Prior art]

2. Description of the Related Art Conventionally, for example, when manufacturing automobile parts, it has been common practice to intermittently supply workpieces processed in a previous process to the next process one by one. For example, in the past, a large number of workpieces were lined up in a row, and the rear end was pushed out one pitch at a time using a pusher, so that the workpieces were pushed against each other and conveyed continuously. There is a device in which the first workpiece is stopped by a stopper, and in conjunction with this, only the first workpiece is sent out by a stop feed member.

By the way, in a forging line, the workpiece is first heated to a predetermined temperature, for example, 1280°C, by a heating device, and then supplied to the forging device at a temperature suitable for forging, where the workpiece is formed into a predetermined shape. ing. In such a forging line,
When supplying the heated work to the forging device, if you try to push out the work one pitch at a time with a pusher and convey it as in the conventional device,
Workpieces may be welded to each other, and in such a case, the conventional apparatus described above cannot intermittently supply the workpieces one by one.

[Purpose of invention]

The present invention was developed in response to the above-mentioned conventional situation, and can be intermittently supplied one by one without causing damage or deformation, even if the workpieces have been heated and welded and their hardness has decreased, and the structure is simple. The object of the present invention is to provide an intermittent supply device for workpieces in a compact forging line.

[Structure of the idea]

The present invention is an intermittent supply device for workpieces in a forging line, in which a step is formed at the bottom of a chute for guiding the workpiece from a heating device to a forging device, and an arm that is swing-driven is arranged above the step. A stopper member for locking the first workpiece is connected to the front end of the arm so as to be retractable in front of the stepped portion of the chute, and a separation member is connected to the rear end of the arm via an elastic member. A second work located immediately behind the first work and above the step is pressably connected to the step, and the heated work is pressed against the step at the bottom of the chute by the separating member to This separates the workpiece and supplies it intermittently.

〔Example〕

Figures 1 to 5 are for explaining an intermittent supply device for workpieces in a forging line according to an embodiment of the present invention, and Figures 4 and 5 show a forging line to which the device of this embodiment is applied. 1, a high frequency heating furnace is used as a heating device for heating a work to a predetermined temperature, and the work is continuously supplied into the heating furnace 1 by a supply device 2. 3 is a forging device, which consists of a forging press machine 4 and a conveying device 5 that sequentially conveys the workpiece between the upper and lower dies of the press machine 4, and the conveying device 5 grips the workpiece with gripping claws 5a. It is designed to be transported one pitch at a time. A push-out cylinder 6 is disposed at the upstream end of the transport device 5, and is used to push and position the work onto the work gripping claws 5a of the transport device 5. Further, a shift conveyor 7 is disposed downstream of the conveyance device 5, and a discharge chute 5b for transferring a workpiece is disposed above the conveyor 7.

A chute 8 is disposed between the heating furnace 1 and the forging device 3 to guide the heated workpiece to the forging device 3, and an inclined portion 8a of the chute 8 is provided with an intermittent A supply device 9 is provided.

In FIGS. 1 to 3 showing details of the intermittent supply device 9, the chute 8 has a circular tube shape, and a lining member 1 is provided at the bottom part of the inclined portion 8a.
0 is fixed. This lining member 10 has a semicircular cross section, and the front end 1 in the workpiece advancing direction
0a forms a step with the bottom surface of the chute 8, and the rear end portion 10b gently continues with the bottom surface of the chute 8.

Further, a support bracket 12 is fixed to the building member 11 above the lining member 10, and an arm support bracket 13 is fixed with bolts to the side plate 12a of the bracket 12. An arm 14 is pivotally supported by a support shaft 15 so as to be freely swingable. This arm 14 has a rod-shaped base 14a, a rear connecting portion 14b and a front connecting portion 14c.
It has a roughly H-shape in plan view and is integrally formed.

The rear connecting portion 14b is connected to a cylindrical guide tube 16 so as to be vertically slidable.
The mounting flange portion 16a is attached to the support bracket 1.
A cylindrical slider 17 of a separation member 27 is slidably inserted into the guide cylinder 16, and a separation rod 18 is also slidably inserted into the slider 17. is inserted into. A stopper nut 19 is screwed to the upper end of the rod 18, and a separation plate 20 is fixed to the lower end. Part 10
It is located slightly forward and above the front end portion 10a of the. And the vertical side portion 20b of this separation plate 20
A biasing spring 2 is provided between the slider 16 and the slider 16.
2 are arranged. Further, a connecting pin 21 is inserted into the engagement recess 14d formed in the rear connecting portion 14b of the arm 14 through the elongated hole 16b of the guide tube 16, the round hole 17a of the slider 17, and the elongated hole 18a of the separation rod 18. engaged.

Further, a base 23a of a stopper member 23 is inserted between the front connecting portions 14c of the swing arm 14, and a connecting pin 24 inserted through the base 23a is inserted into the engagement recess 14e of the front connecting portion 14c. engaged. The stopper rod 23b extending downwardly of the stopper member 23 is connected to the guide member 25.
The stopper rod 23b is slidably inserted into the chute 8, so that the stopper rod 23b can freely move in and out of the chute 8 further forward than the separation plate 20. Further, the flange portion 2 of the guide member 25
5a is secured to the bottom plate 12b of the support bracket 12 by bolts.

A piston rod 26a of a drive cylinder 26 as a drive means is connected to the base 23a of the stopper member 23, and the cylinder 26 is fixed to the top plate 12c of the support bracket 12.

Next, the effects will be explained.

First, to roughly explain the operation in the forging line of this embodiment, a workpiece is heated to a predetermined temperature (1280°C in this embodiment) by a high-frequency heating furnace 1, and this heated workpiece is passed through a chute 8 and then forged. In this case, the intermittent supply device 9 provided on the chute 8 intermittently supplies the workpieces one by one to the extrusion cylinder 6 section, and the cylinder 6 transfers the workpieces to the transfer device 5. It is pushed out and positioned by the gripping claw 5a at the left end in the figure. Then, this workpiece is transported one pitch at a time by the transport device 5, and at this time, the forging press machine 4
Upsetting, finishing, and piercing are performed in sequence, and the processed workpiece is transported to the next process by the discharge chute 5b and the shift conveyor 7.

Next, to explain the operation of the intermittent supply device 9 in detail, at the start of the intermittent supply operation, as shown in FIG. 1, the drive cylinder 26 is extended and the stopper rod 23b enters the chute 8. Furthermore, the separation plate 20 is at its upper end position, and when the workpieces W1 to Wn are pushed in this state,
The leading end of the work W1 as the first work comes into contact with the stopper rod 23b, and these works W1 to Wn are stopped. In this case, workpiece W1~
The Wn are mutually welded into a rod shape, and in order to intermittently feed the workpieces in this state one by one, the drive cylinder 26 is contracted. Then, the stopper rod 23b rises, and the swinging arm 14 swings clockwise in the figure to lower the separation plate 20 together with the slider 17, and the horizontal side 20a of the separation plate 20 moves into the workpiece W2 as the second workpiece. The workpiece W2 is separated from the workpieces W1 and W3, and as a result, the workpiece W2 is separated from the workpieces W1 and W3.
1 slides inside the chute 8 and falls into the extrusion cylinder 6 section. Further, in this case, when the separation plate 20 comes into contact with the workpiece W2, the spring 22 contracts and absorbs the impact force at this time.

When the workpiece W1 is separated and supplied, the drive cylinder 26 is extended again, and as a result, the stopper rod 23b is lowered into the chute 8, and the separation plate 20 is raised, thereby separating the workpiece W2.
~Wn slide inside the chute 8, and the next workpiece W2 as the first workpiece comes into contact with the stopper rod 23b, causing these works W2~Wn to stop.In addition, in this case, the first workpiece W2 is
As shown by the dashed line in the figure, it is in contact with the bottom surface of the chute 8. and drive cylinder 26
When it contracts again, the next second work W3 is separated from the work W2 and the work W4, and the work W2 is pushed into the extrusion cylinder 6.
In this way, the workpiece W3
~Wn will be intermittently supplied one by one.

In this way, in this embodiment, in front of the swing arm 14,
A stopper member 23 and a separation member 27 are attached to the rear end, and these members 23 and 27 are moved up and down alternately, so even if the workpiece W is welded, it can be separated, and one by one can be reliably fed intermittently. can. Further, in this case, the drive source requires only one cylinder for both the separation operation and the intermittent supply operation, which simplifies the structure and allows the device to be made smaller.

In this case, the workpiece is heated to a high temperature and its hardness decreases, making it easily damaged by external force. However, in this embodiment, a spring 22 is disposed between the separation plate 20 and the slider 17. Therefore, the impact force when the separation plate 20 comes into contact with the workpiece can be alleviated, and the workpiece can be prevented from being damaged.

In the above embodiment, the drive cylinder 26 is connected to the stopper member 23, but the drive cylinder 26 does not necessarily have to be connected to the stopper member 23, and may be connected to the separation member 27 or the swing arm 14. Moreover, it goes without saying that this drive source is not limited to a cylinder; for example, a drive motor may be used.

Further, in the above embodiment, the case where the biasing spring 22 is provided has been described, but this spring 22 is not necessarily necessary in the present invention.

[Effect of idea]

As described above, according to the intermittent supply device for workpieces in a forging line according to the present invention, a step is formed at the bottom of the chute for guiding the workpiece from the heating device to the forging device, and the step is driven to swing above the step. A stopper is attached to the front end of the arm, and a separating member is attached to the rear end of the arm via an elastic member, and the heated workpiece is pressed against the step at the bottom of the chute by the separating member to separate the workpiece. This system is designed to separate and feed intermittently one by one without causing damage or deformation, even if the workpieces have been heated and welded and have decreased in hardness. This has the effect of making it more compact with a simple structure.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional side view of an intermittent supply device for workpieces in a forging line according to an embodiment of the present invention;
The figure is a sectional plan view of the swing arm portion, FIG. 3 is a sectional front view of the stopper member portion, and FIGS. It is a diagram. 1...High frequency heating furnace (heating device), 3...Forging device, 8...Chute, 9...Intermittent supply device, 1
0a...Step part, 14...Arm, 23...Stopper member, 26...Drive cylinder (drive means), 2
7... Separation member, W1... First workpiece, W2...
...Second work.

Claims (1)

[Scope of utility model registration request] A device for intermittently supplying a heated workpiece to a forging device, the chute for guiding the workpiece from the heating device to the forging device has a forward-sloping stepped portion formed at the bottom of the chute, and a stepped portion above the stepped portion. An arm is swingably disposed at the chute, a driving means for swinging the arm is connected to the arm, and a stopper member for locking a first workpiece is attached to the front end of the arm, and a stopper member for locking a first workpiece is attached to the step of the chute. A separating member is attached to the rear end of the arm so as to be removable and retractable by swinging of the arm, and a separation member is connected to the stepped portion of the second workpiece located directly behind the first workpiece and above the stepped portion. An intermittent supply device for workpieces in a forging line, characterized in that a front portion thereof is connected via an elastic member so as to be pressable by swinging of the arm.