JPH0622736B2 - Billet carrier - Google Patents

Description

TECHNICAL FIELD The present invention relates to an apparatus for feeding a billet to a billet heater.

[Prior art and its problems] For example, when a billet is forged, a material that is preheated to about 800 ° C is used in a general forging method. However, when accuracy is required for possible dimensions, surface oxidation is prevented. Forging, warm forging using a material heated at a low temperature of around 300 ° C. is used. In this temperature forging method, before heating the billet, which is the material, with a billet heater, a coating process is performed in which the billet is immersed in a dipping liquid so as not to be oxidized by heating, and for this coating process, the billet is heated with a preheat heater. It is necessary to preheat to 150 to 200 ° C.

In the apparatus as described above, the billet discharged from the preheater heater can be delivered to the billet heater in the subsequent stage by the billet sent out from the preheater in a cylindrical direction and in a state where the cut end surfaces are in close contact with each other. Is discharged by a shooter provided with an inclination and then fed to a billet heater by a conveyor or the like. This method simplifies the system configuration, but with billets that are short and have a large diameter in the cylindrical direction of the billet, the posture of the billet after being thrown out by the shooter is unstable,
In some cases, it may not be possible to feed the billet heater to the latter stage well, and such a shooter system requires a large installation space.

Therefore, in order to stably feed the billet, a device such as a robot arm is used as the feeding means, and the billet discharged from the preheating heater is grasped by this arm and then fed to the billet heater. The method of mounting on the carrier heater of FIG.

In this case, as described above, the billets are arranged in the cylindrical direction and are sent out with the cut end faces in close contact with each other, so if the cut end faces of the billet are inclined, pick up the desired billet. There was a risk that the rear billet, which was in close contact, would fall.

Therefore, in the above-mentioned feeding means, it is desirable to separate the billet closely discharged from the preheater heater at a certain interval. Conventionally, the billet heater is provided in the discharge part of the preheater heater, and A predetermined interval is provided between the billets by making the feeding speed of the rollers for feeding slightly higher than the feeding speed of the rollers into the preheating heater. However, in such a fast-forward roller system, the predetermined distance may not be maintained due to friction between the roller and the billet, and a large installation space is required.

[Object of the Invention] The present invention has been made to eliminate the above-mentioned problems, and by providing a predetermined interval between billets,
It is an object of the present invention to provide a billet transfer device capable of feeding a stable billet.

[Structure of the Invention] The billet carrying device of the present invention comprises: a gripping means which is heated by a heating means, is arranged in intimate contact with each other, and which holds billets sent in a line from the heating means; A gripping means is attached, and an arm portion for feeding the billet gripped by the gripping means to a subsequent step by the rotation of the arm, and the gripping means is fed in a line from the heating means. A moving means for moving the billet in the advancing direction by a predetermined length, and moving the billet gripped by the gripping means in the billet advancing direction by the moving means by a predetermined length; It is characterized in that it is sent to the process of.

[Embodiment] FIG. 1 shows the configuration of a billet heating device for warm forging to which a billet transporting device according to an embodiment of the present invention is applied.

Reference numeral 1 denotes a parts feeder, which causes the billet 2 to be aligned in the column direction of the billet 2 and the cut end surfaces of the billet 2 to be in contact with each other and delivered. 3 is a chain conveyor that conveys the billet 2 fed from the parts feeder 1, 4 and 5 are lower slat conveyors and upper slat conveyors that are linearly provided with the chain conveyor 3, and both conveyors 4 And 5 are provided so as to face each other with the billet 2 being fed therebetween.

6 is the chain conveyor 3 and the lower slat conveyor 4
Is a drive motor for driving and at a predetermined speed, and 7 is
A pressing cylinder provided for pressing the upper slat conveyer 5 downward and pressing it downwards of the billet 2. By pressing the billet 2 against the lower slat conveyer 4, the lower slat conveyer 4 moves. The billet 2 is pushed out.
Reference numeral 8 is a preheating heater for preheating the billet 2 extruded by the lower slat conveyor 4 and the slat conveyor 5 at a constant speed.

9 is, for example, a photodiode 9a and a photosensor 9b.
And a billet 2 at a position further advanced by a length L from the billet discharge surface 8a of the preheating heater 8.
The photo diode 9a and the photo sensor 9b are provided on both sides of the traveling path of the billet 2 so that the photo axis 9c extending from the photo diode 9a to the photo sensor 9b is discharged from the billet discharge surface 8a of the preheat heater 8. It is provided so as to be separated from the billet 2 by a length of L in the direction and fed.

10 is a side of the preheater heater 8 which is a feeding direction E of the billet 2.
The turning device is provided at a predetermined position on the right side of the turning device, and the vertical turning shaft 10a provided on the turning device can be turned by 90 °. Reference numeral 11 is an L-shaped arm in which two arms 11a and 11b of equal length extend in a horizontal direction and in directions orthogonal to each other.
Is provided at the upper end portion of the rotating shaft 10a with the bent portion of FIG. When one arm 11a of the arms 11 is in a position orthogonal to the feeding direction E of the billet 2, the other arm 11b is parallel to the feeding direction E of the billet 2. The state of the arm 11 in this position is set to A, and the state of the arm 11 in a position rotated 90 ° clockwise (direction indicated by an arrow in the figure) when viewed from above is set to B. And

A chuck 13 that is lifted and lowered by a lift cylinder 12 is provided at the end of the arm 11a, and the chuck 1
In the state A, a chuck part moving device 13X for moving the device 3 in parallel with the billet feeding direction E by a predetermined length is provided. The lifting cylinder 1 is attached to the end of the arm 11b.
A chuck 15 that is raised and lowered by 4 is provided. 16
Is a dipping tank in which the dipping liquid is stored, which is provided in front of the swivel device 10 with respect to the feeding direction E of the billet 2 and is provided with the arm 11 as described above.
Is in the position of state A, the billet discharged from the preheating heater 8 to a predetermined position can be held by lowering the chuck 13, and the dipping device 18 can be lowered by lowering the chuck 15. The billet on the mounting table 18a can be held.

The dipping tank 16 is provided with an immersion device 18 that is moved up and down by an elevating cylinder 17, and a sensor 19 for detecting the billet 2 placed on a mounting table 18a of the immersion device 18. The sensor 19 is a billet. When 2 is detected, the cylinder 17 is operated for a certain time,
The dipping device 18 descends for a certain period of time. As a result, the billet 2 placed on the mounting table 18a of the dipping device 18 is soaked in the dipping liquid in the dipping tank 16 for the certain period of time.

20 is located on the side of the swivel device 10 so as to face the preheating heater 8, and the billet feeding direction E
Is a chain conveyor provided so as to be able to feed in a direction F opposite to that of the above, and when the arm 11 is rotated to the position of state B, the chuck 15 of the arm 11b is
The chain conveyor 20 is provided at such a position that the billet 2 that has been gripped by is placed on the chain conveyor 20. Further, since the arm 11a and the arm 11b have the same length and are orthogonal to each other, when the arm 11 reaches the position B, the chuck 13 of the arm 11a has the dipping device 18
Will be located on top. When the arm 11 is in the position of state B, the grips of the chucks 13 and 15 perform an operation of releasing the billet 2 which is being gripped together.

Reference numerals 21 and 22 denote a lower slat conveyor and an upper slat conveyor, which are linearly provided with the chain conveyor 20. The conveyors 21 and 22 are provided so as to face each other with the billet 2 being fed therebetween. .
Reference numeral 23 is a drive motor for driving the chain conveyor 20 and the lower slat conveyor 21 at a predetermined speed,
Reference numeral 24 denotes a pressing cylinder provided for pressing the upper slat conveyor 22 downward to press the billet 2 downward. By pressing the billet 2 against the lower slat conveyor 21, the lower slat conveyor 21 moves. The billet 2 is pushed out along with.

25 is a billet heater that heats the billet 2 extruded at a constant speed by the lower slat conveyor 21 and the upper slat conveyor 22 to a predetermined forging temperature, and 26 is a billet heater that is heated by the billet heater 25 at a predetermined location. A shooter to send to.

Next, the operation of the apparatus having the above configuration will be described with reference to FIGS. 2 to 4 which are partial enlarged views of the preheater heater 8.

It is assumed that the arm 11a is at the position of the state A in which the arm 11a is located on the discharge port side of the preheating heater 8, and the operation similar to the operation described later has already been performed, and the placement device 18a of the dipping device 18 is placed. It is assumed that the billet 2'is placed in.

The billet 2 fed from the parts feeder 1 is passed through the chain conveyor 3 to the lower and upper slat conveyors 4,
It is extruded in the direction of the preheater heater 8 at a constant speed. As shown in FIG.
The billet 2 is detected by the sensor 9 when the cutting front surface of the billet 2 preheated to 200 ° C. and discharged reaches a position further separated from the discharge surface 8a of the preheat heater 8 by a length L. In the figure, 27 denotes a skid rail for guiding the billet 2 which is not shown in FIG. As a result, as shown in FIG. 3, the cylinder 12 of the arm 11a operates, the chuck 13 descends and grips the billet 2, and then the chuck part moving device 13X
The chuck 13 is in the feeding direction E of the billet 2 (left direction in the drawing)
Translate by δ ₂ . This causes the gripped billet 2 to be separated from the subsequent billet by a predetermined length. Then, the operation of the cylinder 12 again raises the billet 2 held by the chuck 13. In general,
When the bar material is cut by shirring or the like, the cut end surface does not become a vertical surface due to deformation, and there is a deformation of 2 to 3 mm as shown by δ ₁ in FIG. Both δ ₂ are larger than δ ₁ and are set to about 10 to 20 mm. Further, as shown in FIG. 4, the amount of lifting of the billet 2 is the diameter D + δ ₃ of the billet 2, and δ ₃ is 5
When the billet 2 has a thickness of at least mm, even if the billet 2 moves in a direction orthogonal to the billet feeding direction E, there is no risk of contacting the billet 2 that follows.

On the other hand, the cylinder 14 of the arm 11b is actuated and the chuck 15 descends to grip the billet 2'which has been immersed in the dipping liquid for a predetermined time and placed on the mounting table 18a in the previous operation.

Next, while the states of the cylinders 12 and 14 and the chucks 13 and 15 are maintained, the swing device 10 operates to move the arm 1
1 rotates 90 degrees in the clockwise direction in the figure, and arm 11a is on dipping tank 16 and arm 11b is on chain conveyor 20 and is in state B. The billet 2 gripped by the chuck 13 is positioned on the dipping device 18, and the billet 2 ′ gripped by the chuck 15 is positioned on the chain conveyor 20.

Then, the cylinder 12 of the arm 11a operates, the chuck 13 descends and is released at a predetermined position, and after the billet 2 that has been gripped is placed on the mounting table 18a of the dipping device 18, the cylinder 12 operates to operate as described above. The chuck 13 moves up.
At this time, the cylinder 14 of the arm 11b is actuated to lower the chuck 15 and release it, and the billet 2'which has been gripped is placed on the chain conveyor 20.

Then, the operation of the cylinder 14 raises the chuck 15. After that, the revolving device 10 operates again and the arm 11 turns 90 degrees in the opposite direction this time, returns to the state A and enters the standby state, and the billet 2 discharged from the preheater 8 is continuously detected by the sensor 9. Then, the billet 2 is sequentially dipped in the dipping solution for a predetermined time by the arm 11a,
The arm 11b sequentially conveys the billet 2 soaked in the dipping liquid onto the chain conveyor 20. The billet 2 placed on the chain conveyor 20 is fed to the billet heater 25 at a predetermined speed by the lower and upper slat conveyors 21 and 22. This billet heater 25
The billet 2 heated to a predetermined temperature by the shooter 26
It is fed to a temperature forging machine (not shown) via.

In this way, the billet 2 heated by the preheater 8 is gripped by the chuck 13, the billet 2 is translated in the billet feeding direction E for a predetermined length, and then the billet 2 is lifted to the dipping tank 14. Even if the cut end surface of the billet 2 is deformed, when the billet 2 is lifted, the posture of the billet 2 that follows is changed or the billet 2 is dropped from the skid rail 27. There is no fear, and the billet 2 can be stably fed to the dipping tank 14.

Further, according to the billet heating device for warm forging described above,
A device for transporting the billet 2 heated by the preheater 8 to the dipping tank 16 and a device for transporting the billet 2 soaked in the dipping liquid in the dipping tank 16 to the chain conveyor 20 in the subsequent stage are in the two orthogonal directions as described above. Using the extended arm 11, the billet 2 heated by the preheater 8 and the billet 2 on the dipping device 18 of the dipping tank 16 are simultaneously gripped by the chucks 13 and 15 at the arm position in a certain state A, Further, since the billets 2 gripped by the chucks 13 and 15 at the arm position in the different state B are placed on the dipping device 18 and the chain conveyor 20, the billet 2 and the mounting table 17a of the dipping device 17 are placed. The cylinder direction of the billet 2 on the chain conveyor 20 is the billet feeding direction E, respectively.
The billet 2 can be conveyed to the dipping tank 18 and the chain conveyor 20 with a reliable operation by the operation of the arm 11 because it is placed in a fixed direction such as 90 ° and 180 °.

In addition, the billet heater 25 is moved by the turning operation of the arm 11.
Since the column direction of the billet 2 on the chain conveyor 20 for feeding the billet 2 is parallel to the billet feeding direction E, the billet 2 by the chain conveyor 20
Since the feeding direction F can be opposite to the feeding direction E of the chain conveyor 3 that feeds the billet 2 to the preheater 8, the whole device can be constructed in a U-shape and compact. Therefore, the installation space can be reduced.

Further, since the billet on the device table 18a of the dipping device 18 is soaked in the dipping liquid by moving the dipping device 18 up and down, the dipping time can be set accurately and the dipping device 18 Since it merely moves up and down, the water can be drained on the dipping tank 16 and there is no fear that the dipping liquid will drip outside the depping tank 16 as in the conventional device.

Further, since the dipping device 18 itself has a simple structure, it is not difficult to construct the dipping liquid from a material having corrosion resistance to the dipping liquid.
Since it is located outside the dipping liquid except when dipping, the corrosion of the dipping device 18 can be reduced.

Further, by using a caterpillar-shaped slat conveyor instead of the conventional binch roller as the device for sending the billet to the preheat heater 8 and the billet heater 25, there is no fear of damaging the surface of the billet 2.

[Effects of the Invention] As described above, according to the present invention, as described above, when feeding the billet heated by the heating means to the subsequent step, the gripped billet is moved in the feeding direction of the billet by the moving means. After moving for a long time, since it was moved to the subsequent process, even if the cutting end face of the billet is deformed, when moving the billet, change the posture of the billet that follows and change the billet on the skid rail. There is no fear of dropping the billet, and the billet can be fed stably.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a billet conveying device of the present invention, and FIGS. 2 to 4 are views showing the operation of the chuck portion in FIG. 1 …… Parts feeder, 2 …… Billet, 3,20 ……
Chain conveyor, 4,21 ...... Lower slat conveyor, 5,22 ...... Upper slat conveyor, 6,23 ...... Drive motor, 7,24 ...... Pressing cylinder, 8 ...... Preheat heater, 9,19 ...... Sensor, 10 ... Turning device, 10a ...
… Rotation axis, 11 …… Arm, 12,14,18 …… Elevating cylinder, 13,15 …… Chuck, 13X …… Chuck part moving device, 16 …… Dipping tank, 18 …… Diping device, 25 …… Billet heater, 26 ... shooter.

Claims (1)

[Claims] 1. A gripping means for gripping a billet heated by a heating means, closely aligned with each other, and sent out in a row from the heating means; and a gripping means attached to an arm tip end portion of the arm. An arm portion for feeding the billet gripped by the gripping means to a subsequent step by rotation, and moving the gripping means to the gripping means by a predetermined length in the traveling direction of the billet sent out in a row from the heating means. A moving means is provided for moving the billet held by the holding means in the advancing direction of the billet by a predetermined length by the moving means, and is then fed to the subsequent step by rotating the arm portion. Billet transfer device.