CN1226192A

CN1226192A - Improved bending pressing machine, particularly in process of metal working

Info

Publication number: CN1226192A
Application number: CN97196771.7A
Authority: CN
Inventors: 卢恰诺·加斯帕里尼
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-07-26
Filing date: 1997-07-23
Publication date: 1999-08-18
Also published as: DE69701315D1; IT1288646B1; WO1998004368A1; ITTV960098A1; ATE189780T1; JP2000515814A; AR008009A1; EP0921874B1; EP0921874A1

Abstract

Bending pressing machine, in which the following is provided: at least one cylinder comprising essentially two heads, lower one and upper one and an external jacket held by said heads, welded to the shoulder of the pressing machine's frame, and in which while the first one provides connection means for the cylinder feeding, the second one supports a corresponding removable flange allowing the extraction of an internal jacket; sideways of the crosspiece for the support of the tool, at least two guide points respectively, a first one concerning the upper part of the crosspiece obtained out of a fork-like shape obtained from one of said two heads, and a second one provided along the crosspiece in intermediate position, obtained by engaging to the pressing machine's shoulder, on the top and perpendicularly, a guide , provided on both sides with a surface with a low friction coefficient, to which is superimposed, one part of a gib, being in its turn associated with the corresponding end of the tool-carrier crosspiece.

Description

Improved bender, the bender of particularly in process of metal working, using

Technical field

The present invention relates to improved forcing press, the bender of particularly in process of metal working, using.

The present invention has special purposes in heavy industry, but this is not unique purposes.

Background technology

Existing differently curved forcing press, they are known technically.These devices are widely used for metal and mechanical industry, for example obtain differing formed vertical section in sheet metal processing, comprise that also with identical section, each carries out further crooked pressure fabrication cycles processing in turn to them.

Usually can notice that so-called bend cycles is included in substantially and carries out in the bending, the vertical decline of instrument, up to contact under metal sheet, then, when finishing, turn back to the starting position.In order to carry out said process, machine is made up of two parts, is respectively first moving part, generally refers to top branch and a static element, the downside of the machine of formation and moving part vertical direction.

About moving part, in carrying out bend cycles, the instrument of forming by blade, carry out the vertical reciprocating motion on axis Y-Y ' specially, blade is to be made of the different parts that can change mutually, described motion guaranteed by at least two oil hydraulic cylinders, they each determine the entablature (crosspiece) of longitudinal bracing instrument decline, finally stop and rising.

In more detail, each cylinder group of conventional bender when assembling in advance, in fact combines fixing with the framework or the meront of machine, when each cylinder group combines fixedly with the corresponding side stage shoulder of the framework of a forcing press, use a series of screw to carry out this and fix.When the power that applies at forcing press was higher, the part of these power mainly affacted the tie point between cylinder one forcing press by reaction, so these positions are considered to key component, need be noted especially.

Rely on some to play the little trip bolt effect of attaching parts effect, be provided with some auxiliary fasteners, they have the effect that absorbs stress and bear the enormous impact power of the vertical direction of emitting in dynamic lateral member (crosspiece) conversely.At present, in connecting each cylinder group, between two surfaces of the overcoat opposite side of shoulder one side and cylinder, form the cavity of polishing, make it possible to hold keyway or horizontal key.About the structure of cylinder, conventional cylinder is to comprise a cover that engages shoulder, and it is to be formed with the foundry goods that a sealing flange seals by the end in a side, at opposite side, by an assembly sealing that has the cylinder feed arrangement.With the cover coaxial line be a known axes, its end engages a side of described lateral member securely, lateral member and then support described instrument.

In such scheme, some noticeable shortcomings are arranged.This is related to must be supporting with the frame of each cylinder group and machine.Except the trouble of the very big projection of both sides, this relates to the special processing in pre-assembling, this unavoidably influence considerably make the time and the cost of forcing press.Cylinder particularly, the cast iron overcoat that forms cylinder has very big fusing danger, and checks and find very difficultly, and this melting phenomenon can change the architectural feature of cylinder, and may cause the hidden danger of breaking, and these all can cause production process to pause.

In conventional bender, lateral member is directed in both sides, is provided with reciprocating guider, and they can the phase mutual interference.In more detail, vertically each combines fixingly with the shoulder of guider and pressure machine frame both sides at the top with screw, and this is in conjunction with more or less discrepancy of extension, and is consistent in theory.The guider both sides have the surface of low-friction coefficient, for example a little removable nylon spare.Interaction between the lateral member of the instrument that carries on these parts of machine and top, be to become possibility owing to a part that described guider is capped a take-up device, it is L shaped plate, by the screw permanent engagement on the lateral member of carrying instrument.

This subject matter that comprises the scheme of single lateral member guider is, because with respect to the huge load of lateral member vertical distribution, cause the dangerous position surrender of unique guider, causes the distortion of pressure fold line.After long-time the use, all these have influence on the perpendicularity that must keep when the axis Y-Y ' of lateral member slides.Although regularly fixing maintenance, the Products Quality that this must influence the pressure bending causes a large amount of waste products.

The objective of the invention is to avoid above-mentioned shortcoming.

This purpose is that the improvement by the described feature of claim reaches.By improved forcing press, solved the problem, the particularly problem in process of metal working that occur, comprising:

At least one cylinder group comprises two heads.It is respectively lower and upper head, with an overcoat that is kept by described head, described head side is to the shoulder that is welded to pressure machine frame, and wherein the～head is provided with the jockey that the cylinder feeding is used, corresponding removable flange of second head support is so that can extract a removable interior cover out;

Side in the lateral member of supporting tool, two guiding points are arranged at least respectively, first guiding point is relevant to the top of lateral member, the fork configuration that forms from one of two heads forming cylinder constitutes, second guiding point is located at the centre position along described lateral member, by vertically on the forcing press shoulder, forming in conjunction with a guider at the top, the surface of guider both sides has low-friction coefficient, guider covers the part of a take-up device, and take-up device is fixed with the lateral member respective end of carrying instrument in corner.

Obtain following advantage by technological improvement.The first, can further reduce the machine built-up time, avoid pre-assembling, this means tangible economic benefit.

And, obtain a kind of device of special simplification.Hydraulic part and cylinder feeding part stably meet the mechanics principle, reach the danger of avoiding hydraulic connectors to break.The 3rd, because the size of cylinder is little and the integration of machine body, reduce trouble significantly.In addition, avoided the danger of overcoat fusing.Use removable interior cover, make maintenance work greatly simplify.This simplifies also relevant with use general part available on the market.This also causes the flexibility when needs change piston stroke.

Guiding scheme 2 of the every sides of lateral member; the perpendicularity that remains intact in descending along Y-Y ' vertical axis of the lateral member of the instrument of carrying is provided far and away; keep these characteristics in the lasting time, reduced downtime and consumption that forcing press is keeped in repair and adjusts.Its result can obtain the goods of high quality and low cost.

By the explanation of following preferred embodiment by means of accompanying drawing, the present invention is understood, wherein details only is in order to illustrate, and non-limiting the present invention.

Fig. 1 is the profilograph along the X-X line in the cylinder group of forcing press shown in Figure 2;

Fig. 2 is the plane of forcing press cylinder group;

Lateral member assembly figure on Fig. 3 is included in the cylinder group of a side and the guider of described lateral member;

Fig. 4 is the plane of the assembly of preceding figure;

Fig. 5 is forcing press cylinder group and the vertical profile of guider.

See figure, can see that bender (A) comprises a top and a lower part, the former is first, with respect to second static motion.One is gone up lateral member 1 is first part, can move both vertically along Y-Y ' axis with respect to the framework a of bender, and the instrument 2 of removable vertical combination is set in the lower end of lateral member.

The every side in the end of the main body of machine A has a cylinder group, double-acting type preferably, and its determines to go up lateral member 1 decline and ascending motion along Y-Y ' axis.Each cylinder group comprises two heads substantially, head portion 3 and head portion 4, and they fix one first cover, and promptly overcoat 5.Described two

heads

3,4 and cover 5 firmly are welded to the corresponding side stage of the framework a of forcing press A and take on a '.In detail, two heads except being the working portion, can hold the end of

cover

5,7 by forming given shape, and associated gasket, and have the fork spare 3 of elongation ', 4 '.Pitch identically with

corresponding header

3,4 thickness, each is positioned at shoulder a ' both sides.The upside of (seeing Fig. 1 and 2) head 3 comprise the

device

6,6 that engages feed system ', part forms the position and is suitable for laying cover below, described cover comprises second internal sleeve 7 or the replaceable lining of one first outer cover 5 and coaxial line.First cover 5 is by head portion 3 sealings, and opposite side is by head portion 4 sealings, and last head portion can not move, and can be welded to also is on the shoulder a ' of described first cover 5.Second cover or liner 7 are removable.Promptly can take off from head portion 4, therefore can take off the axle 9 and the interior cover 7 of double acting cylinder by flange 8.Feed conduit 14 is arranged in head 3, it with is communicated with in 7 space of first cover, 5 and second cover, conduit 14 makes 9 function of returning to the end by feed arrangement 6 ' have.

For the every side of forcing press A, one of described

head

3,4 of cylinder group at least, in particular head portion 4 ', form one second fork 10, this moment it perpendicular to fork 4 noted earlier '.(see figure 4), the side of lateral member 1 moves both vertically in its guiding.Described second fork, 10 opposing faces in inside that play the guiding role are equipped with two replaceable sliding shoes 11, and they have low coefficient of friction.In the lower part of lateral member 1, can see it and lead in addition by one second guider.Described device comprises a plate 12, with respect to shoulder a ' vertical engagement, two sliding shoes 12 of two slip lateral support ', they also are low-friction coefficients.The part 13 of a L shaped take-up device 13 ', from side, overlap on the described plate 12 towards the outside, take-up device directly is fixed on the lateral member 1 by general screw.

Claims

1. improved bender, especially for the bender in the process of metal working, wherein:

At least one cylinder group, substantially comprise two heads (3,4) be respectively that lower and upper head and one are by described head (3,, 4) overcoat of Bao Chiing (5), side direction is welded on the shoulder of pressure machine frame, and wherein first head (3) is provided with the device (6,6 ') that connects the cylinder feeding, second head (4) supports a corresponding removable flange (8), makes it possible to extract out a removable interior cover (7);

Side direction in instrument (2) support lateral member (1) respectively has at least two guiding points, and first guiding point is related to the top of lateral member (1), and second guiding point is arranged on the centre position along described lateral member below first.

2. bender according to claim 1, it is characterized in that: the both sides of supporting lateral member (1) at instrument (2) are provided with at least two guiding points, first guiding point is relevant to the top of lateral member (1), second below first, be provided with along the lateral member medium position; Described first guider is made of the Y-piece that one of two heads that constitute cylinder form, second device, be to go up by the shoulder (a ') that joins forcing press (A) in the top vertical direction to constitute, in the part of the last overlapping take-up device (13) of guider (12), take-up device is fixed to the respective end of the instrument of carrying (2) lateral member (1).

3. bender according to claim 1 and 2, it is characterized in that: each cylinder group is made up of two heads substantially, one is head portion (3), one is head portion (4), they are soldered on the respective side shoulder (a ') of framework (a) of forcing press (A), the fork of an elongation of formation (3 ', 4 '), each is positioned at the both sides of described shoulder (a ').

4. according to the described bender of above-mentioned each claim, it is characterized in that: the upside of head (3) comprises the device (6 that joins feed system to, 6 '), under part form by inserting the cover that suitable packing ring holds two coaxial lines, promptly overlap the position of the end of (7) in first overcoat (5) and second.

5. according to the described bender of above-mentioned each claim, it is characterized in that: first cover (5),, is sealed by head portion (4) at opposite side by head portion (3) sealing in a side, two heads can not move, and can be welded on the shoulder (a ') of described first cover (5).

6. according to the described bender of above-mentioned each claim, it is characterized in that:, make that second cover (7) is removable by joining the removable flange (8) of head portion (4) to.

7. according to the described bender of above-mentioned each claim, it is characterized in that: in head (3), be provided with a feed conduit (14), it is communicated with the space between first cover (5) and second cover (7), and described conduit (14) is connected to feed arrangement (6 ').