DE2036382B2 - DEVICE FOR FEEDING A COLD PILGRIM ROLLING MILL - Google Patents

Description

1 sheet of drawings

Claims (1)

ι ² crooked lobes step on a mandrel bar - Claim to reduce the resistance to movement so that raien pru _these dolls can be handled safely. Device for feeding a cold pilger roll solved ^ d this problem invention; J ^ Ja- works with back and forth over push rods through that the at least one specified roller frame is designed with at least one open-pair transport device as a rolling mandrel abutment for setting an axially rod set with several mandrel rods immovable in the rolling direction and at least one of the corresponding roller pairs
Clamping slide for step-by-step acquisition and through the roller set and the Advancing a billet to be rolled out, furthermore with the straightening effect, the frictional resistance is set with a billet push-in device that is arranged in the rolling line and the billets that are noticeably lowered between the billet and mandrel bar on its facing away from the roll stand, so that even curved and long billets are processed. become workable. ^ * · ,, · _A device with associated infeed roller table and with An embodiment of the invention is at at least one driven pair of rollers 15 hand of the drawing explained in more detail, bs shows
having the slug transport device, the Fig.l the inventive straightening device in for pushing the new lobes on connection with a discontinuously working the mandrel rod in front of the mandrel abutment is hen vorgese- device for feeding a cold pilger rolling mill, and is characterized by that according to German interpretation IUl7 5/6 and
the at least one driven pair of rollers on- 20 Fig. 2 the same straightening device in connection with transport device as straightening rollers with a continuously operating device set (10) with several in the rolling direction one behind the other- for feeding a cold pilger mill
other pairs of rollers is formed. In the case of the one shown in FIG. 1, discontinuous working cold pilger mill is the Walzge-25 arm 1 of push rods not shown in loading moves back and forth in a familiar way, and is thereby machined the shell 2 pushed onto the mandrel bar 3. The shell 2 is through the clamping slide 11 The invention relates to a device for Spei- already been conveyed in the position shown, sen of a cold pilger rolling mill with over push rods 30 while a new billet 4 on the inlet ro'.lgen reciprocated rolling stock with at least aisle 6 is brought up and by means of the push-in one Douviderlager to be opened for fixing device9 from behind through which to open an axially immovable Don .stange and at least mandrel abutment 7 through onto the mandrel rod 3 is to be pushed onto a clamping slide for intermittent detection. sen and advancing a billet to be rolled, 35 At this point, the invention comes as furthermore with a straightening device arranged in the rolling line and designed for straightening rollers 10 the blanks on their insert facing away from the roll stand to avoid bent blanks before application To straighten the front face gripping lobe pushing device with on the mandrel bar and thereby associated infeed roller table as well as with a minimum of additional friction between the hollow and the dome to prevent a driven pair of rollers having 40 rod. Pellet transport device, which can be pushed on. The straightening device consists of a simple one the new blanks on the mandrel bar in front of straightening roller set with driven rollers, its the mandrel abutment is provided. Roller drive an additional relief of the Such a device is used, for example, from a pushing device. the German Auslegeschrift 1 017 576 known. 45 The discontinuous cold pilger rolling mill The continuously operating cold pilger mill of F i g. 1 has the advantage of using a mandrel works, Above all, multiple cold pilger mills, abutments and a clamping slide get along, this is increasingly the case for large lobes, but it has to be used when a new lob is attached e.g. 20 m, built. Those coming from the press will be shut down. However, lobes are very soft and accordingly 50 F i g. 2 is intended to show that the inventive invention crooked. So that when feeding a Kaltpilgerwalz- straightening device, even with a continuous arwerkes, no additional friction is used between the hollow pilger rolling mill and the mandrel bar or the hollow guide enters and can, which is used in practice, in which the pusher device is not overloaded, it is also the first mandrel abutment 8 'a second necessary, as straight blanks as possible available to 55 mandrel abutment 8 is provided and other than that. In order to be able to straighten crooked lobes, a second lobe 4 would be applied to a straightening device between the press and the mandrel bar 3 and without a lower cold pilger mill. Such an approach to the processing of a further billet 5, which requires intermediate arrangement but a considerable space, see the roles of the straightening roller set 10 drawn and in addition, the billet is 60 when thrown in, can be applied to the mandrel bar 3,
reshape in the loading table. The two serve to advance the blown blanks The object of the invention is therefore to alternately operate clamping slides those when pushing on long and saber-shaped 12 and 13.