JPS58148007A - Rolling stand of rolling drill machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rolling stand used in particular for press-piercing.

Rolling die is the production of a round hollow shaft-shaped intermediate die that is axially penetrated through a square billet material, and this type of equipment generally uses two driving processing rolls that form a round throat hole. The rolling stand is equipped with a rolling stand, an inlet guide and an outlet guide provided on the rolling stand, and a penetrating mandrel. The mandrel is supported by the end of a mandrel auxiliary par, and the mandrel auxiliary par extends along the rolling penetration axis (hereinafter simply referred to as the stamping) from the exit side of the die. In addition, the perforation of the billet material, which is done at the same time as the rolling of the billet material, resists the force exerted on the mandrel auxiliary par during processing to ensure that the mandrel auxiliary par is aligned with the above-mentioned forming line. A member (restraint element) is provided for holding it in place.

The rolling stand is generally constructed of a single steel structure consisting of a base and four columns, and the upper ends of each of the columns are firmly connected by a top plate of appropriate dimensions. Generally speaking, the front pair of the pillars mentioned above is firmly connected to the frame that supports the entrance guide of the shear, while the rear pair of pillars is firmly connected to the support frame of the exit guide. There is. The connection between the rolling stand and its inlet and outlet guides constitutes a closed system of forces for horizontal improvement of the shear die, which K ensures that the forces have no adverse effect on the operation of the shear die. It looks like this.

In the above case, the processing rolls are also supported within the rolling stand by means such as roll stops l[(roll ck@ek) and the like. A bundle of plate-shaped spacers, a load cell, and other similar devices are interposed between these roll stoppers, and in the following description, these are not clearly defined as accessories for the processing rolls. becomes.

It is well known that the machining rolls need to be replaced regularly due to machine damage. Generally, this is done when it is necessary to change the diameter of the intermediate material to be processed.

When replacing each of the above processing rolls, the positioning of the new processing roll and its attached parts in the rolling stand is as follows:
It is also known that securing the indentation line in its original configuration in the event of a die loss must be carried out with particular care, this operation being commonly referred to as scrutinizing.

However, the adjustment work described above takes a relatively long time due to the number of parts to be handled during the replacement of the processing rolls, the mutual relationship of the arrangement of these parts in the rolling stand, and the difficulty of handling these parts due to their volume and weight. View the time.

Therefore, it is not possible to stop the operation of the die cutter for the entire time required to replace the processing rolls. For this reason, at present, the above-mentioned replacement is carried out by replacing the entire rolling stand with another rolling stand that is waiting outside the rolling line. (with the new diameter) and its accessories are already assembled outside the rolling line. (In addition, this rolling stand is adjusted to a predetermined rolling line.) On the other hand, although this method is effective in significantly shortening the time for changing processing rolls on the rolling line, On the other hand, in this case, due to the size of the rolling stand and its weight at the time of shear loss, a fairly powerful rolling stand transfer device is required, which has the disadvantage of consuming considerable energy in its operation. Furthermore, it is known that there are problems in terms of production and maintenance costs, and although transfer devices are needed at hand, the number of times transfer devices are used is only a small number during the period of use. It is nothing more than a

Furthermore, although the time required to replace a rolling stand is shorter than when replacing work rolls in a rolling line, there is still a problem in that it requires a lot of IT time. actual,
Replacement of the above-mentioned rolling stand starts with removing the rolling stand from the base, removing the entrance guide and exit guide of the shear damage from the above-mentioned base, lifting and moving the O-rolling stand from the rolling line, and all other steps. This involves all the work related to the removal of the hydraulic, pneumatic, and electrical system fins, that is, the removal of each processing roll from each drive shaft. All these operations must be repeated each time a new rolling stand is installed, and this rolling stand must be positioned exactly on its rolling line.

The main object of the present invention is to provide a rolling stand which eliminates the problems of the above-mentioned prior art and allows replacement of processing rolls.

The above object is solved by a rolling stand according to the present invention, which comprises two working rolls with roll stoppers, an inlet logite, and a rolling stand aligned with the rolling line A of the rolling stand. In order to support the mandrel auxiliary bar, it consists of at least one pair of restraining members located on the exit side of the mandrel auxiliary bar. Further, when the self-supporting frame is positioned within the rolling stand, the self-supporting frame is removably fixed to the rolling stand by a fixing member.

According to an embodiment of the present invention, the self-supporting frame is made up of four pillars whose lower ends are fixed to the bottom plate, and whose upper ends are firmly connected by removable upper plates. The opposing set is formed with a receiving section for receiving the roll stopper plate 1 of each of the processing rolls and its attached parts, and further, the upper plate is provided with an opening directly above the receiving section. Further, according to an embodiment of the present invention, the lower end of the self-supporting frame is provided with wheels that match the rails supported by the base of the rolling stand, and the rails are provided with wheels for rolling. It is characterized by being perpendicular to each other and being able to move forward and backward.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

Rolling die loss 1 (pre@@-pearclng m
1ll) has a rolling stand 2 and an inlet guide 3, which is either linear or of the roller type.

Reference numeral 4 denotes the piercing mandrel of the above-mentioned shearing loss 1, and this mandrel 4 is fixed to the inner part of the mandrel auxiliary par 5, or otherwise fitted into this end part. The mandrel auxiliary bar 6 is formed along the indentation line A on the exit side of the shearing loss 1.

The compression stand 2 has two 1-pole 6゜L and rear pillars 8 and 9, and these pillars 6 and 7゜8.9 are the base 1.
Each is fixed at 0.

Further, the upper ends of the columns C to 9 are connected to the top plate 11, so that the rolling stand 2 can withstand the large force generated during the rolling and drilling of the billet material. It has an integrated structure.

A pair of restraints! element 12.13 and each actuator, such as a hydraulic cylinder 14. Is is the above posterior column g, s
It is supported by L, and during operation of 1,
These restraining factors? ! .

13. Hydraulic cylinders 14 and 15 hold the mandrel auxiliary par 5 in exact alignment with the indentation line AK.

The self-supporting frame 16 is detachably mounted within the rolling stand z, and the self-supporting frame 1σ will be described below.

The self-supporting frame 16 consists of four columns iy, is, and 19.20, and the lower layers of these columns 11 to 10 are each fixed to the bottom plate 21.

In addition, an upper plate 211 is provided at the upper end of each of the above companies 1r to 20.
The receiver formed in is supported by parts 22, 23 and 24, 25 in a detachable manner. The above upper plate 26 is 1r to 20 for each company.
They are interconnected and have a structure and size to form a substantially birdcage-like frame.

Between columns 1'l, 19 and 18°20 of the self-supporting frame 115, two upper and lower processed sails 31°320 roll stoppers (roll 5hock) jr, 2jl and 29.30 are in surface contact and can be attached and removed. They are fitted freely.

Processing roll J7 determined by the pressurization AK. Although JJ is positioned outside its rolling twin,
This positioning is accomplished using substantially the same techniques and means as in conventional air pressure stands.

At the bottom of the self-supporting frame 16, a pair of wheels 33, 33,
34, 34 are attached, and these wheels 33, 3
3, 34, and 34 have sizes and shapes that match the rails JJ and II, respectively. Above rail ss
, stt are supported by the rolling stand 2 on the base 10 located between the front columns 6 and 8 and the front columns 7 and rear columns 9. More specifically, the rails 35 and 36 are perpendicular to the pressure line AK of the rolling stand 2, and these rails 35 and 36 are opposite from the side facing the drive shafts sr and sa of the processing rolls 31 and 32. It extends laterally to the outside of the rolling stand 2.

There are two openings 39.4 in the top plate 26 of the self-supporting frame groove.
0 are formed, and actuators 41 and 42 supported by the top plate 11 of the rolling stand 2 are inserted into these openings 39 and 40.

When the self-supporting frame 16 is installed in the rolling stand 2,
Each of the above actuators 41 and 42 is a machining module si, s.
A force can be exerted on the roll stop plates 22° 28 and 29.30 of z.

A further feature of the present invention is that each pillar 19.26 of the self-supporting frame 16 has a pair of restraint members 43.
44 and each hydraulically actuated cylinder 46 , 46 are supported, and these restraining members 43 , 44 and each hydraulically actuated cylinder 45 , 46 are supported by the restraining element 1 of the rolling stand 2 .
In conjunction with 2.13, care should be taken to accurately maintain the position of the mandrel auxiliary par 5 against the forces occurring during operation of the shearing loss 1.

In the air pressure stand 2, a fixing member for removably fixing the self-supporting frame 16 is schematically shown at 41.48 in the figure. When the rolling stock determined by the processing rolls 31 and 32 positioned in the self-supporting frame IC and the rolling stand Jjdj and the pressing line determined by the above-mentioned entrance guide 3 complete one stroke, the above-mentioned Fixed member 41
．． 48 fixes the self-supporting frame 16. Further, an actuator indicated by 49, specifically a hydraulic cylinder 49, is mounted on a self-supporting frame 16t- in the rolling stand 2.
When installing it and when taking it out from the pressure air stand 2, the freestanding frame J6 is placed on the rail 35.
Used to move on 36.

The effects obtained by the rolling stand 2 of this invention will become clear based on the description with reference to the attached drawings.
The effect is basically that the machining roll JJ, 32, can be quickly changed and the support of the mandrel auxiliary part 5 can be reliably guaranteed during the operation of the cutting die.

In fact, in order to replace the processing rolls 31 and 32 when each of the rolls reaches its service life limit or when it becomes necessary to change the intermediate material to be formed,
After removing the actuators 41 and 42 from the self-supporting frame itt and releasing the locks from the fixing members 4'l and 4m, the self-supporting frame 16 and each of the processing rolls 31 and 32 provided within the self-supporting frame 16 are removed. It is sufficient to simply push out the entire rolling unit consisting of attached parts from the pressure stand 2.

Subsequently, another self-supporting frame I6 equipped with new processing rolls si, sz and each roll stopper plate 2r to 29 is installed in the empty rolling stand 2. The self-supporting frame 16 was waiting on the side of the perforation 81 while the replaced self-supporting frame 11 was operating within the rolling stand 2.

Self-supporting 7 frame 1 with new processing roll si, J2
1 is properly positioned in the rolling stand 2, each wheel 13, 13, 34.1 of the freestanding frame 16!
I myself am a rail SS.

It should be noted that the rail 36, 36 is removed from the bottom of the rolling stand 2, for example.
○ Each work roll 11, 32 of the rolling stand 2 based on the configuration of the present invention can be replaced in 15 to 16 minutes, which results in a reduction in daily production after shearing. Many valuable improvements can be made.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and Fig. 1 is a trunk view schematically showing the post-pressing stage equipped with a pressure stand, Fig. 2 is a side view with a partial cross section of the rolling stand, and Fig. m3. Figure 4 is a cross-sectional view of the same rolling stand No. 7, and Figure 4 is a cross-sectional view of the same rolling stand.
Figure 1. 2... Pressure stand, 3... Entrance guide, 5...
Mandrel auxiliary par, 12.13...Restraint member, 16.
... Self-supporting frame, IF, 2B, 29.31) ... Roll stopper plate, 31.32 ... Processing roll, 41, . 4
g...Fixing member. u3hA Jindai Master Patent Attorney Suzue Takeshi Rattan 1:16
．． 1

Claims (4)

[Claims] (1) Two processing rolls equipped with roll stoppers and attached parts, an inlet guide for inserting the billet material between these processing rolls, and a roller that is aligned with the rolling penetration axis of these processing rolls and the entrance guide. In order to disperse and support the mandrel auxiliary par, a removable Km self-supporting frame is installed in the rolling stand in a positive arc stand after rolling, which has at least a pair of restraining members located on the O exit side. The above-mentioned processing roll, roll stopper plate, and accessory parts are provided on the self-supporting frame, and a fixing member is provided on the rolling stand so that the self-standing frame can be released when the self-supporting frame is installed in the rolling stand. A rolling stand after the rolling mill is characterized by: (2) The self-supporting frame consists of four pillars, each of which has its lower end fixed to the bottom plate and whose upper end is interconnected by a removable top plate, which are spaced apart at predetermined intervals. Claim lll, characterized in that a roll stopper plate for each of the processing rolls is fitted into each of the two sets of columns facing each other! No. I (rolling stand after rolling milling described in item 11). (3) A patent claim characterized in that the pillars forming the set of the self-supporting frame support a restraining member for holding the mandrel auxiliary par together with a restraining mat on the rolling stand side, and each actuator of the restraining member. 0m1m1 The rolling stand after residual rolling described in paragraph (2). (4) A patent claim characterized in that the lower end of the self-supporting frame is provided with wheels that match the rails supported on the base of the rolling stand, and the rails are perpendicular to the rolling axis of the rolling stand. 0111! ! Rolling stand for rolling borehole described in paragraph (3) 0