JPS592882Y2 - Lubricant supply device in tube rolling mill - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for supplying lubricant to the inside of a tube being rolled in a tube rolling mill such as a plug mill.

Generally, when a tube is rolled with a tube rolling machine such as a plug mill, a lubricant is supplied inside the tip of the tube on the open side of the tube rolling machine.

In the conventional device for the second method, the tube is moved by a device that supports and conveys the tube, and one end of the tube is brought into contact with a firmly formed stopper wall. The lubricant is supplied into the pipe through the formed opening by a direct pushing method using a cylinder, a blowing method using compressed air, or the like.

However, in the conventional device described above, the tube is moved by a conveying device so that its end comes into contact with the stopper wall, so even if a heavy tube collides with the stopper wall, the stopper wall must be able to withstand the impact. It is necessary to have a thick and strong structure, and in order to prevent the tube end from deforming due to collision, it is necessary to adjust the conveyance speed of the tube so that it collides as gently as possible. Due to variations in the position of the tube placed on the device,
It is difficult to adjust the conveyance speed, and if the speed is adjusted to reduce the speed, it takes time to set the pipes, resulting in a decrease in work efficiency.

The lubricant is in the form of powder, lump, paste, etc., and when the lubricant is directly pushed into the pipe using the cylinder described above, the lubricant does not come out of the pipe even if the pipe is moved. It is necessary to extrude at a predetermined distance from the end of the tube to avoid spilling, but for this purpose it is necessary to extrude at a fairly high speed, and the cylinder device that allows such high-speed operation is It becomes very expensive, and as mentioned above, direct extrusion requires a long stroke, resulting in an elongated cylinder device.

Also, when blowing lubricant into pipes using compressed air, if the lubricant is in the form of lumps, even if the lubricant is injected, the difference in particle size may cause the lubricant to be supplied deep into the pipe, or the lubricant may solidify. In addition, in the case of powder, even a small blowing pressure causes it to scatter deep into the pipe, making it extremely difficult to control the supply position. There were various problems such as:

The present invention can solve the various problems of the conventional device described above, and has one end rotatably supported by a pin, the other rotatable end having an opening, and a part provided with the opening. A stopper board whose one side is adapted to receive and stop one end surface of the pipe sent by the conveying device, and a stopper board which contacts the other side of the stopper board to elastically restrict the rotation of the stopper board. an impact shock absorber attached to a fixed support plate;
The lower end is rotatably supported by a pin, and the lubricating side receiver is provided with a rotating arm having a tool at the upper end in alignment with the opening, and the rotating arm is rotated by a throwing cylinder to open the lubricating side. The present invention relates to a lubricant supply device for a tube rolling mill, characterized in that the receiver is equipped with a throwing device for supplying the lubricant therein to the inside of the tube through an opening.

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

Figures 1 to 3 show an example of the present invention.
A stopper plate 4 is provided above with a lower end rotatably supported by a pin 2 and having an opening 3 for supplying lubricant.

In front of the stopper board 4, a roller 6 and a pipe 5 are provided for transporting the end of the pipe 5 so as to contact the stopper board 4.
A tube delivery arm 11 swings around a pin 10 so as to transfer the tube 5 from the shelf 7 to the tube introduction shelf 9 for guiding the tube 5 to the tube rolling mill 8 on the rear side aligned with the opening 3. is provided.

Further, at the rear of the stopper board 4, there is provided a rotary arm 13 whose lower end is rotatably attached to the fixed base 1 via a pin 12, and the stopper board at the upper end of the rotary arm 13 is provided. At the position that matches the opening 3 of 4,
A lubricating device 15 is provided for receiving the lubricant from the lubricant supply section 14 provided at the top and throwing it into the tube 5 through the opening 3, and a fixing device 15 at the rear of the rotating arm 13 is provided. Cylinder rod 18 of the throwing cylinder 17 attached to the support plate 16 fixed vertically on the table 1
is connected to the intermediate portion of the rotating arm 13 to constitute a lubricant injection device.

Further, on the left and right sides sandwiching the opening 3 between the stopper plate 4 and the support plate 16, impact force buffers 19 are provided to elastically prevent the stopper plate 4 from rotating rearward from the vertical position. is fixed to the support plate 16,
Further, on the front side surface of the stopper board 4, there is a holding tool 20 that restricts the stopper board 4 from rotating forward from the vertical state, and a rotation stopper that restricts the forward rotation limit of the rotation arm 13. There are 21.

In the above configuration, when the tube 5 is conveyed by the rollers 6 and its tube end is brought into contact with the stopper disk 4, even if the tube 5 collides with the stopper disk 4, the impact force is absorbed by the impact force buffer 19.
Therefore, there is no need to finely adjust the conveying speed of the tube 5 to reach the optimum condition each time, and contact can be performed by roughly adjusting the speed.

Therefore, according to the present invention, the end of the tube 5 will not be deformed due to a collision, and the tube 5 can be quickly approached and brought into contact with the stopper plate 4, thereby increasing the efficiency of the work. Can be done.

In addition, in the lubricant dumping device, after receiving a predetermined amount of lubricant from the lubricant supply section 14 into the lubricant side receiver 15, the rotating arm 13 is rotated forward by extending the cylinder 17 for throwing the lubricant. Then, at the extension limit of the throwing cylinder 17, the rotating arm 13 collides with the rotation stopper 21, and the reaction causes the lubricant in the tool 15 to leak into the opening 3.
It is supplied to a predetermined position within the tube 5 via the.

In addition, by selecting the connection position of the throwing cylinder 17 to the rotating arm 13 in the above, the cylinder 17
The lubricant side support can arbitrarily increase the moving speed of the tool 15 by adjusting the extension speed of the lubricant side support, and the lubricant side support whose surface is coated with Teflon receives the lubricant with the tool 15 and moves it inside the pipe 5. Therefore, the lubricant can be reliably thrown out and supplied regardless of its properties such as powder, lump, paste, etc., and the supply position of the lubricant into the pipe 5 can be adjusted by adjusting the position of the lubricant into the cylinder 17. It can be easily and arbitrarily changed by controlling the operating speed.

Note that the present invention is not limited to the above-mentioned embodiments, and various changes can be made without departing from the gist of the present invention.

According to the above-mentioned lubricant supply device for a tube rolling mill of the present invention, the impact force of the tube against the stopper plate is absorbed by the impact force buffer, so that the conveyance speed of the tube can be easily or in some cases increased. can be completely unnecessary,
Therefore, it is possible to shorten the tube setting time and improve work efficiency.

ii) By being able to absorb impact force, the support structure can be constructed at low cost, and the tube end is prevented from deforming due to impact.

iii.The lubricating side receiver is designed to supply lubricant by rotating a rotating arm equipped with a tool with a cylinder for throwing in, so that it can be placed at a predetermined position inside the pipe arbitrarily and reliably, regardless of the properties of the lubricant. can be supplied to

etc., exhibits various excellent effects.

[Brief explanation of drawings]

Fig. 1 is a cutaway side view showing an embodiment of the present invention, Fig. 2 is a view taken along the line II-II in Fig. 1, and Fig. 3 is a cross-section view taken along the line II-II in Fig. 1.
-III line arrow view. 1 is a fixed base, 2 is a pin, 3 is an opening, 4 is a stopper board,
5 is a tube, 6 is a roller, 12 is a pin, 13 is a rotating arm,
15 is a lubricating side receiver, 16 is a support plate, 17 is a throwing cylinder, and 19 is an impact force absorber.

Claims (1)

[Scope of utility model registration request] One end is supported by a pin so as to be rotatable, and the other end is provided with an opening, and one side of the part with the opening receives one end surface of the tube sent by the conveying device. A stopper plate is configured to stop the stopper plate, an impact buffer is attached to a fixed support plate so as to come into contact with the other side of the stopper plate and elastically restrict the rotation of the stopper plate, and the lower end is rotated by a pin. The lubrication side holder is provided with a pivot arm having a tool at its upper end coincident with the opening, the lubrication side holder being pivoted by a drop-in cylinder. 1. A lubricant supply device for a tube rolling mill, characterized in that the lubricant is supplied to the inside of a tube through an opening.