CN101801554B

CN101801554B - Drawing assembly for drawing machines and related method

Info

Publication number: CN101801554B
Application number: CN200880107810XA
Authority: CN
Inventors: 布鲁诺·基乌赫; 恩佐·沃格里格
Original assignee: Danieli and C Officine Meccaniche SpA
Current assignee: Danieli and C Officine Meccaniche SpA
Priority date: 2007-09-20
Filing date: 2008-09-18
Publication date: 2012-05-23
Anticipated expiration: 2028-09-18
Also published as: ES2363841T3; EP2197601B1; WO2009037320A1; CN101801554A; EP2197601A1; ITUD20070170A1; DE602008005908D1; ATE503595T1

Abstract

Drawing assembly (10) comprising two opposite and counter-rotating tracks (11), each consisting of a plurality of links (12) constrained to each other and each supporting a relative drawing clamp (13) which grips the product to be drawn (14), wherein each drawing clamp (13) is able to be selectively clamped inside a housing seating (21 ) of the relative link (12) by means of corresponding rapid attachment/detachment members (22) associated with the link (12). The drawing clamp (13) comprises two external hollows (15, 16) of different sizes and in each of which a determinate range of cross sections of the product to be drawn (14) is positioned. The invention also relates to a corresponding method for drawing metal products.

Description

The drawing assembly and the correlation technique that are used for drawbench

Technical field

The present invention relates to a kind of drawing assembly that is used for the drawbench of drawing metal product (for example, bar or pipe).Particularly, drawing assembly according to the present invention is common continuous type, and comprises at least two relative and guide rails reverse rotation, and each guide rail can be made up of with the connecting rod (link) of realizing the axial drawing of metal product by the clamping metal product a plurality of setting gradually also.The invention still further relates to the Hubbing method that uses this drawing assembly.

Background technology

The drawbench that is used for Metallic rod is known, and this drawbench comprises drawing assembly, this drawing assembly be provided with two with respect to the drawing axis relative and guide rail reverse rotation.

Each guide rail is made up of a plurality of connecting rods that limit each other successively, and, the drawing folder is installed on each connecting rod, drawing is clipped in to act in the use treats the drawing bar.

Especially, each drawing folder cooperates with the corresponding drawing folder of relative guide rail, to treat the drawing bar from relative sandwich.

Each drawing folder is provided with hollow body, and this hollow body specifically is shaped with respect to the cross section in the part of the drawing of bar.

Like this, treat that the drawing bar is clamped between two hollow bodies of two relative drawing folders, and the rotation of two guide rails realizes the clamping and the continuous basically drawing of bar, handle to realize drawing.

Drawing folder can be pulled down from corresponding connecting rod, therefore, under the cross section wearing and tearing of treating the drawing bar or situation about changing, can the drawing folder be pulled down fully.

Knownly, can make the drawing folder that can innerly substitute of a large amount of different brackets (series), for solid hopkinson bar, normally the drawing of 4-5 grade is pressed from both sides, and for tubular rod, normally the drawing of 10 grades or more grades is pressed from both sides.

The drawing fixture of each grade has corresponding hollow body, and the size of this hollow body is different with the hollow body size of another grade drawing folder, thereby each grade drawing folder is suitable for the bar that clamping effectively has the equal scope of different-diameter.

The applicant to have been found that in order realizing and to change drawing folder (even each guide rail is changed 50 or more a plurality of drawing folder) fully from two guide rails, needs two qualified to do about 15 to 20 minutes as the employee.

According to applicant's estimation, do not consider common and special maintenance work, must carry out these with regard to closing machine in about every 4-5 hour and change the work that drawings are pressed from both sides.

Therefore, for the drawing used in prior art folder, the production of drawing assembly and do to have expensive and long-time, and, on the production of the whole drawbench that is equipped with drawing assembly and work, have expensive and long-time thus.

In addition, known solution needs big holder to store obsolete each grade drawing folder.

The objective of the invention is to realize a kind of drawing assembly that is used for drawbench, wherein, compared with prior art, being used for effectively, the replacement of the drawing folder of the bar of clamping different-diameter has reduced time and the cost producing and safeguard.

The applicant designs, tests and specialized the present invention, so that overcome the shortcoming of prior art and obtain these purposes and advantage and other purpose and advantage.

Summary of the invention

The object of the present invention is to provide a kind of novel drawing assembly that is used for drawbench, compared with prior art, being used for effectively, the replacement of the drawing folder of the bar of clamping different-diameter has reduced time and the cost producing and safeguard.

According to said purpose, drawing assembly according to the present invention comprises at least two relative and guide rails reverse rotation, and each guide rail is made up of a plurality of connecting rods of restriction each other, and each link supports can clamping treats that the relevant drawing of drawing product presss from both sides.Through the included corresponding quick connection/separator of connecting rod, each drawing folder can optionally be sandwiched in the gantry base (housing seating) that on the outside of associated linkages, runs transverse through.According to characteristic of the present invention, the drawing folder comprises at least two outer hollow body of different size, and, in each hollow body, can locate the said drawing product of treating with definite size range.Said drawing double-layered quilt is set to optionally move (for example, transverse translation) with respect to respective link, with selected hollow body and the drawing axis alignment of treating the drawing product.

For the present invention, what the same drawing folder with hollow body of at least two different sizes can be guaranteed at least two different size scopes of clamping effectively treats the drawing product.

The drawing folder of the different brackets that can prior art be provided like this, reduces by half at least and treats the drawing product with what cover the comparable size scope.

In addition; For solution according to the present invention; For the drawing product of treating from a size range is treated the drawing product to another size range; Need not to change fully the drawing folder of associated linkages, with drawing press from both sides translation or more generally the drawing folder is moved with respect to connecting rod just enough so that will new hollow body and treat the drawing axis alignment of drawing product.

The applicant assesses, and for solution according to the present invention, treats the drawing product for what load onto new size range to machine, and an operator is approximately just enough with 5 minutes time later at machine switched off.

Therefore, can significantly reduce the production and the maintenance time of drawing assembly, and reduce its cost greatly.

According to a modification, be arranged on two sizes that hollow body had on the same drawing folder make allow clamping effectively have complete different value size range treat the drawing product.

According to another modification, be arranged on two sizes that hollow body had on the identical drawing folder make allow clamping effectively have part common value at least size range treat the drawing product.

Description of drawings

With reference to accompanying drawing, through the description of the following preferred implementation that provides as limiting examples, of the present invention these will become obviously with further feature, wherein:

Fig. 1 is the partial side view according to drawing assembly of the present invention;

Fig. 2 shows from the cross section of II to the II intercepting of Fig. 1, and the drawing folder is in clamped condition;

Fig. 3 shows the guide rail of Fig. 2, and the drawing folder is in releasing orientation;

Fig. 4 shows some drawing folders that use in can the drawing assembly in Fig. 1.

The specific embodiment

With reference to accompanying drawing, drawing assembly 10 according to the present invention is parts known type and the drawbench that is used for bar 14 that be not shown specifically in the drawings.

Drawing assembly 10 comprises the guide rail 11 (partly shown in Fig. 1) of two reverse rotations, and these two guide rails are with respect to drawing axis " x " symmetry and the setting relatively up and down of bar 14.

Each guide rail 11 is made up of a plurality of connecting rods 12 basically, and said a plurality of connecting rods limit (constrained) each other through suitable articulated joint (joint).

Relevant drawing folder 13 by optionally, movably (removably) be installed on each connecting rod 12.

In this case, the top of each drawing folder 13 is provided with two hollow bodies, is respectively first hollow body 15 and second hollow body 16, and these two hollow bodies are arranged essentially parallel to charging axis " x ".

Each

hollow body

15 or 16 optionally is positioned in the mode of operation, and in this state, said hollow body is aimed at charging axis " x ", and cooperates with the corresponding

hollow body

15 or 16 of relative guide rail 11, to keep the part of bar 14.

Like this, in the drawing processing procedure, by guide rail 11 drawing bars 14.

According to the present invention, first hollow body 15 and second hollow body 16 are of different sizes, and consistent with the different size scope of the bar of treating drawing 14.

In this situation, first hollow body 15 is suitable for allowing effectively the clamping diameter greatly about the bar between the 17mm to 22mm 14.

The size of second hollow body 16 is much littler than first hollow body 15, and second hollow body 16 is suitable for allowing effectively the clamping diameter greatly about the bar between the 5mm to 7.5mm 14.

As shown in Figure 4; Two

hollow bodies

15 and 16 that are arranged on each drawing folder 13 are suitable for not only allowing clamping effectively to have the very bar 14 of different size scope; And the bar 14 that allows clamping effectively to have the size range of public boundary value or overlapping value, this size range with public boundary value for example is: for first hollow body 15, the size of bar is to about 17mm from about 11mm; For second hollow body; The size of bar is from about 7.5mm to about 11mm, this this have an overlapping value size range for example be: for first hollow body 15, the size of bar is from about 11mm to about 17mm; For second hollow body 16, the size of bar is to about 14mm from about 9mm.

Two guide rails 11 are installed on the corresponding rigid support plate 17 in a known way; Two guide rails are through gear 19 rotation continuously; And guide rail cooperates with the intermediate chain 20 of roller-type and on bar 14, exerts pressure, thereby gives bar 14 along axis " x " with the drawing force transmission.

Each drawing folder 13 has two front 13a that tilt and concentrate towards the outside, and is arranged in the relevant gantry base 21 of (dovetailed) structure that has wedge shape.Gantry base 21 runs transverse through on the outside of respective link 12.

Connecting rod 12 has been confirmed a restriction with the wedge bond of relevant drawing folder 13, and this restriction prevents the accidental of drawing folder 13 and vertically moves.

In order to change the drawing folder, perhaps in order

hollow body

15,16 optionally to be positioned in the state of aiming at charging axis " x ", can only laterally release from relevant gantry base 21 through the drawing folder discharges drawing folder 13 from associated linkages 12.

Each connecting rod 12 comprises quick connection/separator 22, and this connects fast/separator is provided with center holder and relevant activation part, so as with relevant drawing folder 13 firmly and movably (removably) be clipped in the gantry base 21.

In this situation, holder is made up of spheroid 23, and simultaneously, the thrust device 25 that the activation part is matched with spring 26 by the rear portion is formed.

Thrust device 25 comprises the cavity 27 of hemispherical shape basically on top, it is used to locate the cam contour (cam profile) of spheroid 23.

When thrust device 25 is in clamped position (Fig. 2), spheroid 23 cooperates with the top edge of cavity 27.

Like this, promote spheroid 23 towards the outside, and spheroid is partly inserted be arranged in first blind hole 29 on the lower surface of drawing folder 13, thereby drawing is clipped on the associated linkages 12.

First blind hole 29 is set in the position, makes the part of spheroid 23 in this position insert the aligned of guaranteeing first hollow body 15 and charging axis " x ".

Through compression spring 26, thrust device 25 is axially moved to off-position (Fig. 3), spheroid 23 is decided to be in cavity 27, thus spheroid is downwards and become and discharge from blind hole 29.

Thus, drawing folder 13 is released, and can be with respect to laterally translation of associated linkages 12.

In these release conditions, but translation drawing folder 13, till making spheroid 23 and second blind hole 30 on the lower surface that is arranged on drawing folder 13 aimed at basically.

Second blind hole 30 is set at a position, makes spheroid 23 insert the aligned of guaranteeing second hollow body 16 and charging axis " x " in the part of this position.

Then, thrust device 25 is back to clamped position, spheroid 23 is raised, and makes spheroid partly insert blind hole 30, thereby drawing folder 13 is clipped on the connecting rod 12, and second hollow body 16 is in the operating position of aiming at charging axis " x ".

Yet, significantly, under the prerequisite that does not deviate from the field of the invention and scope, can make amendment and/or increase part above-mentioned drawing assembly 10.

What provide for example is in the content in the field of the invention: each drawing folder 13 is provided with the hollow body of three or more a plurality of different sizes, and each hollow body bar 14 of clamping different size scope effectively all.

Following content also belongs in the field of the invention: replace spheroid 23 with the center holder; This center holder comprises holding pin; This holding pin is installed in the cavity that is formed on the connecting rod 12 axially slidably, and is basic vertical with the plane at drawing folder 13 places and be connected with gantry base 21.

Following content also belongs in the field of the invention: activate part and comprise the thrust device that laterally is installed on the connecting rod 12 and is substantially perpendicular to said holding pin setting.

Obviously; Though described the present invention with reference to some instantiations; But those skilled in the art should can realize the drawing assembly that is used for drawbench of many other equivalents certainly, and these drawing assemblies have the characteristic described in the claim also thus all in the protection domain that claim limited.

Claims

1. a drawing assembly comprises at least two relative and guide rails reverse rotation (11), and each guide rail is made up of a plurality of connecting rods (12) of restriction each other; And, the drawing folder (13) that each link supports is relevant, said drawing folder can clamping be treated drawing product (14); Wherein, through corresponding quick connection/separator (22) that said connecting rod (12) comprises, each drawing folder (13) can optionally be clipped in the gantry base (21) that on the outside of associated linkages (12), runs transverse through; Wherein, Said drawing folder (13) comprises at least two outer hollow body (15,16) of different size, and; In each hollow body, can locate the said drawing product (14) of treating with definite size range; It is characterized in that said drawing folder (13) is set to optionally move with respect to corresponding said connecting rod (12), so that selected hollow body (15 or 16) is aimed at the said charging axis (" x ") of drawing product (14) of treating.

2. drawing assembly according to claim 1 is characterized in that, the size that said at least two outer hollow body (15,16) have make allow clamping size range effectively to have nothing in common with each other and do not comprise common value treat drawing product (14).

3. drawing assembly according to claim 1 is characterized in that, the size that said at least two outer hollow body (15,16) have make allow clamping size range effectively to have nothing in common with each other but have at least one common value treat drawing product (14).

4. each described drawing assembly in requiring according to aforesaid right is characterized in that said quick connection/separator (22) comprising: at least one holder (23), and it can move axially along the axis perpendicular to plane, said guide rail (11) place; And activation part (25); It can move axially and can between first clamped position and second off-position, move said holder (23), in said first clamped position, and the coupling base (29 on said holder and the lower surface that is formed on said drawing folder (13); 30) cooperate; In said second off-position, said holder discharges from said coupling base (29,30).

5. drawing assembly according to claim 4 is characterized in that, said activation part (25) with can the elastic device (26) that said holder (23) remain on said first clamped position be matched.

6. drawing assembly according to claim 4; It is characterized in that; Said holder comprises sphere or the semi-circle shaped elements (23) that can insert at least in part in the said coupling base (29,30), and it is characterized in that; Said activation part (25) comprises the cavity (27) that is formed on said activation part top, and said cavity cooperates with said sphere or semi-circle shaped elements (23).

7. drawing assembly according to claim 4; It is characterized in that; There are at least two said coupling bases (29,30), each said coupling base (29; 30) be manufactured to locator qualification with one of the correspondence in said at least two outer hollow body (15,16) at the state of aiming at said charging axis (" x ").

8. drawing assembly according to claim 1 is characterized in that, said drawing folder (13) comprises three or more a plurality of outer hollow body (15,16).

9. Hubbing method that is used for drawing metal product (14), said metal product for example is bar or pipe, said Hubbing method may further comprise the steps; Wherein, through two relative and guide rail reverse rotation (11) product clamping (14), each guide rail is made up of a plurality of connecting rods (12) of restriction each other; And; Each connecting rod supports relevant drawing folder (13) through corresponding connection/separator (22) fast, it is characterized in that said Hubbing method further may further comprise the steps:

-go up the outer hollow body (15,16) that at least two different sizes are set at each said drawing folder (13), and the said drawing product (14) of treating with definite size range can be positioned in each hollow body;

-move said drawing folder (13) with respect to corresponding said connecting rod (12), so that selected hollow body (15 or 16) is aimed at the said charging axis (" x ") of drawing product (14) of treating according to the size of said product (14).

10. Hubbing method according to claim 9 is characterized in that, said drawing folder (13) is along the transverse translation that belongs to the axis on plane perpendicular to said guide rail (11) with respect to the direction of motion of corresponding said connecting rod (12).