JPH0716705B2 - Device for receiving and conveying work from roll straightener - Google Patents

Description

Description: TECHNICAL FIELD The present invention receives a tubular or rod-shaped work made of straightened metal such as aluminum sent from a roll straightening machine, and places it at a predetermined position in front of the roll straightening machine. The present invention relates to a work receiving and conveying device that conveys a workpiece.

Conventional technology In many cases, metal tubes such as aluminum tubes that require high precision in diameter, roundness, wall thickness, etc. are often manufactured by drawing an extruded tube. Pipes that have been subjected to drawing often have a considerable amount of bending due to nonuniform internal stress that occurs during drawing. Therefore, in order to improve the straightness after the drawing, the straightening process is usually performed.

This straightening is a straightening machine called a so-called inclined roll type, that is, by inserting a work such as a drawing tube in the self-axis direction from the tip portion of the straightening machine, a straight-lined or drum-shaped type is provided. The work is generally performed by using a roll straightening machine of a type in which the work is straightened by the action of the rolls arranged in a plurality of inclined states while imparting a driven rotation while being drawn in, and is forwarded. Is.

By the way, the drawn tube put into this roll straightener
It is required to be automatically received at the exit side of the roll straightener and then automatically conveyed to a predetermined position in front of the roll straightener. To answer such a request, The conditions need to be met.

That is, firstly, at a stage immediately after the tip of the work is delivered from the roll straightening machine, the rear end of the work is still subjected to the straightening action by the straightening roll in the roll straightening machine and is forced to rotate. Therefore, the work must be received so as to allow the rotation. Otherwise, the work may be scratched due to excessive rubbing in the circumferential direction with the straightening roll in the roll straightening machine.

In particular, the work is used in a photosensitive drum of an electronic copying machine, a laser printer, or the like, and the surface quality is severe, such as being used for a photosensitive drum substrate that supports a photoconductive photosensitive layer such as selenium or an organic photosensitive body. In the case of a drawn pipe that is questioned, the above scratches cause fatal injury,
The production yield may be reduced.

Secondly, after the work sent from the roll straightener is received, it must be able to accurately stop the work at a predetermined stop position in front of the roll straightener. This is so as not to hinder the automatic transfer of the work to another work process using a fork or the like.

Therefore, the present inventors have recently devised the following device as a receiving and conveying device for a work satisfying the above conditions.

That is, in this work receiving and conveying device, as shown in FIG. 8, an endless drive chain (52) capable of orbiting in the front-rear direction is arranged at the front position of the roll straightening machine (51). A supporting device (54) for supporting the outer peripheral surface of the rear part of the work (53) from below is attached to the lower side of the (52), and a holding device for holding the tip of the work (53) on the upper side of the chain (52). (55) is attached. The holding device (55) has a U-shaped frame (56).
A rotation support device (57) attached to the inner surface side of the rising side portion of the frame (56) and supporting the tip end surface of the work (53) in a manner permitting its rotation, and attached to the lower side portion thereof. The holding device (58) holds the outer peripheral surface of the distal end portion of the work (53).

In this work receiving and conveying device, the holding device (55) first stands by at the rear standby position near the exit of the roll straightening machine (51). Then, when the work (53) sent out while rotating from the roll straightener (51) comes into contact with the rotation bearing device (57) of the holding device (55), the chain (52) is circulated forward and held. The device (55) is moved forward at the same speed as the delivery speed of the work (53). Then, when the rear end of the work (53) is released from the straightening action of the roll straightening machine (51) and the rotation is stopped, the support roller (5
4) moves to the upper side, the rear part of the work (53) is supported by the roller (54), and the holding device (58) operates to hold the front end of the work (53). And
While maintaining that state, the work (53) is equipped with a roll straightener (5
1) Transported to a predetermined stop position in front.

That is, according to this receiving and conveying device, the rear end of the work (53) is still in the roll straightening machine (51) in the straightening roll (60).
The work (53) is supported and held by the rotary support device (57) while being forcibly rotated by the ... while the rear end of the work (53) is a roll straightening machine (51). Since the work (53) is supported and held by the holding device (58) and the support roller (54) when the rotation is stopped after being released from the correction action by the
It is possible to prevent the work (53) from being scratched by rubbing with the receiving and conveying device and by scratching with the straightening rolls (60) in the roll straightening machine (51) in the circumferential direction. Further, since the holding device (55) holds the front end of the work (53) and conveys the work (53) in front of the roll straightening machine (51), the work (53) is rolled. Can be accurately stopped at a predetermined stop position in front of, and therefore a problem that the automatic transfer of a work to another work process by a fork or the like is hindered can be solved.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the work receiving and conveying device as described above, the work (53) sent from the roll straightening device (51) contacts the rotary bearing device (57) of the holding device (55). At this point, the drive chain (52) begins to rotate and the holding device (5
Since the movement of 5) to the front is started, a strong impact force acts on the work (53) at the moment when the work (53) comes into contact with the rotary support device (57), and therefore the work (53) Five
3) The rear part of the straightening roll (60) of the roll straightening machine (51)…
There is a possibility that a situation may occur in which scratches are caused due to the rubbing applied to the work (53) because of excessive rubbing in the axial direction.

As described above, the above-mentioned apparatus still has an inherent problem that cannot be solved regarding measures for preventing scratches on a work.

Therefore, in order to solve this problem, the inventors of the present invention start the holding device (55) from the rear standby position and move it forward, and hold the tip of the work (53) at the initial point of the movement. That is, we devised to control the so-called relay method. As a result, the impact at the time of contact with the rotary support device (57) was considerably softened, but there was the drawback that setting the timing was extremely difficult.

The present invention solves the above-mentioned problems, and can receive and convey a work from a roll straightening machine without scratching the work, and in particular, the tip end of the work strongly abuts against the holding device. It is possible to receive and convey the work without causing an unreasonable rubbing scratch in the axial direction with the forced roll of the roll straightening machine caused by the above, and further convey the received work at a predetermined position in front of the roll straightening machine. An object of the present invention is to provide a device for receiving and conveying a work from a roll straightener that can be accurately stopped.

Means for Solving the Problems The above-mentioned object is arranged on the outlet side of a roll straightening machine, receives a tubular or rod-shaped work sent out from the roll straightening machine, and conveys it to a predetermined position in front of the roll straightening machine. A device for automatically receiving and conveying a work, which is moved in the front-rear direction by a drive device such as an endless chain, and holds a front end portion of the work in a manner that allows rotation of the work device, and a roll straightening device for holding the work device. At the rear standby position close to the machine exit, an initial drive device such as a cylinder device that pushes and starts the work forward at a speed lower than the work delivery speed, and while the work is being straightened by the roll straightening machine, waits at the lower standby position. While not in contact with the work, the rear end of the work rises when the roll straightening machine sends it out, And a supporting roller that is vertically moved toward the axis of the work so that the work is held by the initial drive device before the tip of the work comes into contact with the holding device located at the rear standby position. It is achieved by a device for receiving and conveying a work from a roll straightening machine, which is characterized in that it is operated so as to push and start.

In the work receiving and conveying device described above, when a work is loaded into the roll straightening machine and the leading end of the work approaches the holding device that stands by at the rear standby position, an initial drive device such as a cylinder device at a predetermined time point. Is operated, and the holding device is pushed and started at a speed lower than the feed speed of the work. Along with that, the holding device also starts to move by itself by a drive device such as an endless chain. Then, in the initial movement process, the front end of the work sent out from the roll straightener comes into contact with the holding device, and the front end is held by the holding device.

After that, the holding device is moved forward by the driving device such as an endless chain at the same speed as the work delivery speed. Since the holding device holds the tip of the work in a manner that allows the work to rotate freely, the trailing end of the work is still inside the roll straightening machine during this movement process, and the action of the internal straightening rolls The workpiece can be freely rotated while being forcibly receiving the rotational force.

Then, at the time when the rear end of the work is delivered from the roll straightener, the support roller rises from the lower standby position to support the rear outer peripheral surface of the work from below. At this point, the rear end of the work is no longer subjected to the straightening action of the roll straightening machine and the rotation is stopped, so that the work and the supporting roller do not make an excessive sliding contact.

Then, the work is pulled by the holding device while being supported and held by the holding device and the supporting roller in the front and rear thereof, conveyed to a predetermined front position, and stopped at that position.

After that, after the work is taken out by another conveying means, the holding device and the supporting roller are returned to their original positions by the backward orbiting operation of the chain, and stand by for the receiving and conveying operation of the next work, Then, the same operation as above is repeated.

Embodiments Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, (1) is a roll straightener,
(2) is a work receiving and conveying device arranged on the exit side of the roll straightener (1).

The roll straightener (1) is arranged in a plurality of slanted or drum-shaped inclined states provided inside by inserting a tubular or rod-shaped work (3) from its tip toward the self-axis direction. By the action of the straightening rolls (4) ... That is, the work (3) is straightened while being pulled in and imparted with a driven rotation, and is straightened out, and is sent forward. It is a straightening machine.

On the other hand, in the work receiving and conveying device (2), (6) is a holding device, (5) is an endless drive chain as a driving device for moving the holding device (6) in the front-rear direction,
(7) is a support roller, and (27) is a pushing air cylinder device as an initial drive device.

The chain (5) consists of a pair of front and rear sprockets (8).
By being passed over (8), it is made to orbit in the front-back direction. The chain (5) can be rotated in either forward or reverse directions by a motor (not shown).

The holding device (6) is attached to the upper side of the chain (5) and, as shown in FIG. 6, a U-shaped frame (9) connected to the chain (5) and the frame (9). Attached to the inner side of the rising side of the work (3)
And a holding device (11) that is attached to the lower side of the frame (9) and holds the outer peripheral surface of the tip of the work (3).

As shown in FIG. 7, the rotary support device (10) includes a cup-shaped fixing member (12) whose bottom is fixed to the inner surface of the rising side of the frame (9) and a fixing member (12) on the opening side. )
Of the cup-shaped rotating member (13) fitted to the outside of the peripheral wall of the fixing member (12) toward the opening side of the fixing member (12), and both members (12).
A plurality of spheres (1
This is a device that applies the structure of a so-called radial bearing, which is configured by combining 4). Therefore, according to this rotation bearing device (10), the tip end surface of the work (3) which is forcibly rotated by the action of the roll straightener (1),
It can be supported in a manner that allows its rotation.

As shown in FIG. 6, the holding device (11) is provided with a through passage (16) for allowing the work (3) to pass therethrough, and a pad (17) is provided on the lower side with the through passage (16) interposed therebetween. , A presser cylinder device (18) is arranged on the upper side, and a work (3) is held by the rod (19) and a pad (17) by advancing a cylinder rod (19) of the presser cylinder device (18). It is supposed to be done.

In addition, a bell-shaped work guide protrusion (20) that expands in diameter rearward is provided on the inlet side of the holding device (11), and a work (3) sent out from the roll straightening machine (1). Even if there is a slight misalignment with the holding device (11), the tip of the work (3) can be received in the holding device (6) without any trouble.

The holding device (11) is a holding cylinder device (18).
Is divided into an upper half portion (23) in which the pad (17) is arranged and a lower half portion (24) in which the pad (17) is arranged, and the upper half portion (23) can move up and down. Has been made. As a result, after the work (3) is transported by the receiving and transporting device (2), the work (3) can be taken out from the receiving and transporting device (2) by a predetermined unloading means.

The support roller (7) is attached to the lower side of the chain (5). That is, as shown in FIGS. 2 to 4, the rear end of the work (3) is located in the lower part of the chain (5) while the rear end of the work (3) is in the roll straightening machine (1) and undergoing the straightening action. To maintain a non-contact state with the work (3), while
As shown in FIG. 5, when the rear end portion of the work (3) is released from the straightening action of the straightening rolls (4) of the roll straightening machine (1), it moves to the upper side of the chain (5). It is supposed to support the work (3).

As shown in FIG. 1, the pushing cylinder device (27) is arranged adjacent to the rear part of the chain (5) and is pushed to the frame (9) of the holding device (6). The part (29) is pushed so that the tip of the cylinder rod (28) is pushed, and thus the holding device (6) is pushed forward from the rear standby position to the front at a speed slightly lower than the feed speed of the work (3). It is supposed to be a blame.

Then, the chain (5) and the cylinder device for pushing (2
The operation control method of 7) is performed in the following manner.
That is, the pushing cylinder device (27) moves the holding device (6) immediately before the tip of the work (3) passing through the roll straightener (1) comes into contact with the holding device (6) waiting at the rear standby position. It is supposed to be operated so as to push and start. On the other hand, the chain (5) starts its operation toward the front before and after the operation time of the pushing cylinder device (27), and after the tip of the work (3) is held by the holding device (6). Is controlled so as to be approximately the same speed as the delivery speed of the work (3).

Next, the operation of the work receiving and conveying device (2) having the above structure will be described.

First, as shown in FIG. 2, the work receiving and conveying device (2) waits in a state where the holding device (6) is brought close to the exit of the roll straightener (1).

Then, after the work (3) is put into the roll straightener (1) and immediately before the work (3) comes into contact with the rotary support device (10) of the holding device (6), as shown in FIG. , The cylinder device (27) is operated, and the chain (5) is started before and after that, and the holding device (6) causes a high speed rising due to the pushing action of the cylinder device (27) and is directed forward. And starts moving at a speed slightly slower than the feed speed of the work (3). Then, the tip of the work (3) approaches the holding device (6) at a speed slightly higher than that of the holding device (6), and at a predetermined time point, as shown in FIG. Then, the tip of the work (3) comes into contact with the rotary support device (10) of the holding device (6). This prevents the work (3) from striking the rotary support device (10) with a strong impact when it is received by the holding device (6), and the work (3) is attached to the straightening roll (4) of the roll straightening machine (1). ) Is prevented from scratching.

After that, the holding device (6) moves forward at the same speed as the delivery speed of the work (3) by the orbiting operation of the chain (5), and the work (3) is held by the holding device (6) and the roll straightener ( It is sent out from the roll straightener (1) while being supported by and. At this time, the work (3) is forcibly rotated by the roll straightener (1), but the tip end of the work (3) is supported by the rotation support device (10) in a manner in which rotation is permitted. Therefore, it is possible to prevent the work (3) from being scratched by rubbing with the straightening rolls (4) in the roll straightening machine (1) in the circumferential direction.

Then, when the feeding progresses and the work (3) is released from the forced feeding state by the roll straightener (1), the holding cylinder device (18) in the holding device (6) operates, and the sixth As shown in the figure, the tip of the work (3) is attached to the pad (17) of the holding device (11) and the cylinder rod (1).
9) Held by and. At the same time, as shown in FIG. 5, the supporting roller (7) moves from the lower side to the upper side of the chain (5), and the rear part of the work (3) is supported from below.

Then, the orbit of the chain (5) is such that the work (3) is located at a predetermined stop position, for example, the holding device (6) is located at the most distal position of the chain (5) as shown in phantom in FIG. Until it stops at that position. At the time of this stop, the tip surface of the work (3) is rotated by the rotary support device (1
0) and the outer peripheral surface of the tip is held by the holding device (11), there is no risk of relative displacement with the holding device (6) even if it is suddenly stopped, therefore, It becomes possible to quickly carry the work (3) to a predetermined stop position.

Then, after the work (3) is conveyed to a predetermined position, the rod (19) of the holding cylinder device (18) retracts and the upper half (23) of the holding device (11) rises,
The work (3) is taken out by a take-out means such as a fork (not shown), and conveyed to the next work process. On the other hand, in the receiving and conveying device (2), the upper half part (2
3) descends, the pushing cylinder device (27) also returns to its original state, and the chain (5) orbits in the opposite direction and returns to its original standby position. Then, the same operation as above is repeated.

EFFECTS OF THE INVENTION As described above, in the device of the present invention, the holding device is provided for the work which is fed from the roll straightening machine and whose rear end portion is still inside the roll straightening machine and is forcibly rotated by the straightening action. Since the rotation of the work is retained in the mode in which the rotation is allowed, it is possible to prevent the outer surface of the work from being scratched by the unreasonable rubbing in the circumferential direction with the straightening roll in the roll straightening machine.

Also, the support roller stands by at the lower standby position and is kept in a non-contact state with the work while the work is being straightened by the roll straightening machine, and rises when the rear end of the work is sent out from the roll straightening machine. Since it is operated so as to support the rear part of the work, the work is not scratched by the support roller.

The initial drive device is driven so as to push and start the holding device before the tip of the work sent out from the roll straightening machine reaches the rear standby position of the holding device. When the workpiece reaches the position of the holding device, strong impact force in the axial direction does not act on the work, and scratches on the work due to forcible rubbing in the axial direction with the straightening roll of the roll straightening machine are also prevented. It

As described above, according to the apparatus of the present invention, it is possible to receive and convey a work without scratching the work.

Therefore, in particular, it is possible to receive and convey a work whose surface accuracy is strictly required, for example, a drawing tube used for manufacturing the photosensitive drum substrate as described above, without damaging the tube. It is possible to improve the manufacturing yield.

Moreover, since the work is conveyed to the front of the roll straightening machine by holding the front end portion by the holding device in a state where the rear portion is supported by the supporting roller, the work is conveyed at a predetermined position in front of the roll straightening machine. Even if the revolving operation of the chain is relatively suddenly stopped, the work does not move forward relative to the holding device due to its inertial force. Therefore, the work sent out from the roll straightening machine is not transferred to the holding machine. It can be stopped accurately at a predetermined position in front of.

[Brief description of drawings]

1 to 7 show an embodiment of the work receiving and conveying apparatus of the present invention. FIG. 1 is a side view of a main part thereof, and FIG. 2 is a side view showing a standby state for receiving a work,
FIG. 3 is a side view showing a state immediately after the chain starts to circulate, FIG. 4 is a side view showing a state in which a holding device receives the tip of the work from a roll straightening machine, and FIG. 5 is a work supporting roller. FIG. 6 is a side view showing a state of being supported by, FIG. 6 is a sectional view of the holding device, and FIG. 7 is a sectional view of the rotary support device. FIG. 8 is a side view showing a work receiving and conveying device which is a premise of the present invention. (1) ... Roll straightening machine, (2) ... Work receiving and conveying device, (3) ... Work, (5) ... Chain (driving device),
(6) ... Holding device, (7) ... Support roller, (27) ... Cylinder device (initial drive device).

Claims (1)

[Claims] 1. A device for automatically receiving and transporting a workpiece, which is disposed on the exit side of a roll straightening machine and receives a tubular or rod-shaped workpiece sent from the roll straightening machine and transports it to a predetermined position in front of the roll straightening machine. A holding device that is moved in the front-rear direction by a drive device such as an endless chain and holds the tip of the work piece in a manner that allows its rotation; and a holding device that holds the holding device in the rear of the roll straightening machine outlet. At the standby position, an initial drive device such as a cylinder device that pushes the vehicle forward at a speed lower than the delivery speed of the work, and while the work is being straightened by the roll straightening machine, it waits at the lower standby position to be in a non-contact state with the work. The axis of the work is kept so that it rises when the rear end of the work is sent out from the roll straightener to support the rear part of the work. And a support roller that is operated up and down toward the front end of the work, and the initial drive device is operated to push and start the holding device before the tip of the work abuts on the holding device located at the rear standby position. A device for receiving and conveying a work from a roll straightening machine, which is characterized by being made.