ITUB20155329A1 - Punching machine with interchangeable processing stations - Google Patents

Description

DESCRIPTION of the industrial invention entitled: "Punching machine with interchangeable processing stations"

The present invention refers to a punching machine with interchangeable processing stations, and in particular to a punching machine with drawers.

The invention was developed with particular regard, although not limited to, a punching machine for profiles, with reference to the production of fixtures, such as windows, doors, frames, facades (with "facades" we mean here the curtain walls glass) etc. For the production of frames, in fact, a series of profiles, typically made of aluminum, must be subjected to various successive processes, some along the length of the profile, some near the ends. The processes carried out are generally of punching. With punching, here and in the following, we mean the operation of removing cold material. In particular, through punching, holes can be made or a profile can be cut.

Various punching machines are known. Some, the simplest, require a single machining: a cylinder, movable along an axis, gives a movement to a punch. The problem with these punching machines, however, is that in order to carry out all the processes necessary to complete a frame it is necessary to use many machines, with consequent high costs and large overall dimensions. Some machines have the option to mount one

processing station to choose from among a set, but this implies the need for

continuously change the processing station, extending the i

times.

To overcome these problems, the Applicant has already marketed for years punching machines with drawers, ie punching machines equipped with several processing stations, which can be inserted from the front as if they were drawers. In short, a drawer punch press has a long moving cylinder

a vertical axis, which transfers movement, via a door device

drawers, to a series of processing stations fixed on the drawer holder. However, it is generally not possible to foresee a large number of stations

per machine, unless the size is increased unacceptably

overall machine.

However, the complete machining of a frame, whether sliding or hinged, normally requires numerous processes, thus requiring

the use of more than one such known machine.

Alternative machines, equipped with a door, were also developed

drawers revolving around the axis of the cylinder, so that a

large number of processing stations on the same machine, arranged radially around the cylinder axis. Although these machines can have more than three stations with a much smaller overall footprint,

they are less comfortable to use: it is necessary at each change of processing

rotate the drawer holder to position the chosen station in a position accessible from the front, with a consequent significant increase in

processing.

The purpose of the present invention is to solve the problems of the

known technique and in particular to provide a punching machine which allows to carry out a plurality of workings comfortably and quickly

on a profile; in particular, this invention intends to provide a machine which allows to carry out all the workings necessary for the realization of a window or door. It is also intended to provide a machine particularly

compact and versatile, capable of processing even large profiles,

and that it is flexible, so that it can also adapt to new profiles required by

any range changes. A further object is to provide a

economic, simple, reliable and safe machine.

In order to achieve the purposes indicated above, the present invention

relates to a punching machine according to the attached claims.

Further characteristics and advantages will become evident from the following detailed description of a preferred embodiment of the invention, with reference to the annexed drawings, provided purely by way of example not

limiting, in which:

Figure 1 is a perspective view of a second punching machine

the present invention; PROVV <ISI> ONATO & CO - figure 2 shows the punching machine of figure 1 according to one

different angle;

Figure 3 shows the punching machine of Figure 1 according to one

third angle;

- figure 4 shows the punching machine of figure 1 without the

processing stations;

figure 5 shows a single processing station;

figure 6 shows the machining station of figure 5, during the machining of a piece;

- figure 7 shows the punching machine of figure 1, with the cylinder translated to the right;

Figure 8 shows an overall view of a punching machine with five working stations mounted.

With reference now to the drawings, figures 1 and 2 show the front part 2 of the punching machine 1 and figure 3 shows its rear part 3. The punching machine 1 comprises a fixed main body

10, on which a plurality of processing stations 100, 102,

104, and a movable cylinder, constrained at its ends to two plates 14 which

operate the processing stations.

The fixed main body 10, better visible in Figure 4, is equipped with

a base 16 adapted to be fixed to a work surface, to ensure the stability of the machine. Furthermore, it is equipped with a pair of plates 17, placed respectively on the right side 4 and on the left side 5 of the punching machine 1; left and right, as well as front and back, are evaluated based on position

of an operator while using the machine. PROVV <ISI> ONATO & CO A plurality of pairs of guides 18 and 20 are fixed to the plates 17;

as better described below, each pair of guides is adapted to receive a corresponding guide provided on a processing station. Preferably, the plates 17 are pre-drilled and have a high number of

holes, so as to allow the pairs of guides 18 and 20 to be mounted in positions

different, depending on the number and type of processing stations

want to mount. In fact, some types of machining and / or some profiles to be machined require more space and, therefore, must be mounted at a greater distance from nearby stations.

In figures 1-3, for simplicity of representation, on the right side 4

there are only two end machining stations 100 and 102, to carry out distinct machining on the ends of a profile. The guides 20 are also provided for a further end machining station.

Furthermore, in the upper part, the guides 18 are mounted for the insertion of

a station that performs a machining along the entire length of the profile.

On the left side 5, on the other hand, a single end machining station 104 is shown and there are further guides 20 for another end machining station and guides 18 for another station that carries out

a machining along the entire length of the profile.

The cylinder, in the embodiment shown, is hidden inside the fixed body 10. The cylinder is integral with two plates 14, having the shape of a parallelepiped. According to the present invention, the cylinder is movable

along a horizontal axis A, from right to left and vice versa. In this

mode, the cylinder can operate both the processing stations located on the right PROVV <ISI> ONATO & CO side, and those located on the left side. To ensure linear movement,

two pins 24 are provided, fixed to the fixed main body 10 and sliding

in corresponding holes 26 of the plates 14. The pins 24 therefore act as

guide for the movement of the plates 14.

The cylinder is a pneumatic cylinder and is equipped with a pneumatic valve 28 which, as better explained below, determines the working side.

Figure 5 shows an example of a processing station. Specifically, it is a processing station 104 which makes two holes: one

circular and one elongated. Of course, this is just an example of a

processing which must not be construed as limiting. Any processing normally used for the production of frames can be implemented on a similar station, which can be mounted on the guides 18 or 20.

Processing station 104 is an end processing station. In other words, it performs machining near the end of a

profiled. It includes a machine connection support 200, equipped

of a connection guide 202 complementary to a pair of guides 20

provided on the pre-drilled plate 17 of the machine. The connection guide

202 is composed of two grooves 203 facing each other, while each pair of

guides 20 comprises two L-shaped profiles such as to engage the two grooves

203.

The coupling is provided by sliding the connecting guide 202 inside the guides 20. The insertion takes place from the rear of the

machine 3 towards the front 2. A stop 204 makes it possible to lock the

processing station. It is understood that different coupling systems

they are equally possible, without thereby departing from the scope of protection PROVV <ISI> ONATO & CO of the present invention.

Two punches 206 and 208 are mounted on a punch holder

210. The punches are movable along the direction of their axis P; the P axis of

punches is horizontal and is parallel to the A axis of the cylinder. The rectilinear movement of the punches is guided by a guiding system 211. The guiding system

it comprises a punch guide 212 connected to the support 200 and provided with holes

(not visible in the images) through which the punches slide, guided. There

punch guide 212 is also equipped with two further holes (also not visible in the images) within which two sliding elements 213 slide.

sliding elements 213 are connected to the punch support 210, e

they are equipped with springs 214 for the return of the punches at the end of the stroke.

The punch holder, when the processing station is fixed in

seat, is operatively connected to the plates 14 and therefore to the cylinder, so that

the movement of the latter determines the movement of the support for punches 210 and, therefore, of the punches 206 and 208.

Two shaped sheets 216 and 218, sliding relative to each other,

act as anti-crushing protection: to ensure the safety of

operators, one is integral with the support for punches 210, the other with the support

200 of the processing station.

The processing station 104 further comprises a matrix 220,

connected to the punch guide 212, preferably by means of screws 221, and equipped

of two holes, one for each punch 206, 208. The holes are not visible in the drawings because they are covered by a compensation fork profile chamber 222

for re-insertion of the profiles to be machined.

During processing, in fact, as shown in figure 6, a PROVV <ISI> ONATO & CO H profile is inserted fiontally in the processing station 104, between the die 220 and the punch guide 212. To ensure the exact positioning of the profile with respect to to the punch (s), is optionally mounted on the die

220 the compensation fork 222, which has the external shape corresponding to the internal profile of the section H.

An adjustment knob 224, known in the art as a

stop, pins ette to adjust the distance between die 220 and punch guide 212,

so as to allow the processing of profiles H of variable thickness S.

During the operation of the punching machine, it is possible

use a processing station of your choice among those assembled. The cylinder,

as already mentioned, it is unique and operates all the stations. When it is desired to use a station on the left hand side 5, for example station 104 previously described in detail, by operating the pneumatic valve 28, the cylinder

it is translated to the right (in Figure 7 the cylinder and the plates 14 are shown to have been translated to the right). In this way, the punches 206 and 208 retract, pushed by the return springs 214. It is thus possible to insert a profile H in the

machining station 104. Of course, the displacement of the cylinder towards

right causes backward movement of all the punches of the processing stations of the left side 5 of the punching machine possibly mounted.

Once profile H is inserted in its seat, the cylinder is activated and,

then, it moves to the left, moving the plates 14 to the position shown in Figure 1. The actuation preferably takes place by means of a pedal board, not shown. Consequently, the punch holder 210 and, together,

the punches 206 and 208 advance to the left, drilling the profile H and compressing the return springs 214. Once the machining is finished, the cylinder moves PROVV <ISI> ONATO & CO to the right and, together, the plates also translate in the same direction

14, the support for punches 210 and the punches 206 and 208, pushed by the springs

return 214. Thus the machined H profile can be removed. Subsequently, a new profile can be inserted in the same processing station, or the previously processed profile H can be moved to one

different processing station.

Note that while the cylinder moves to the left to perform the machining on one of the machining stations on the left side 5, the punches

of the right-hand side processing stations 4 are litracted. In other words,

the movement of the cylinder has simultaneous and opposite effect on the stations

processing placed on the right side and on the left side.

Consequently, when it is desired to use a processing station located on the right side 4, such as for example the stations shown

101 and 102, the pneumatic valve is operated to translate the cylinder and the

plates 14 to the left, in the position shown in Figure 1.

It is thus possible to insert a profile H in one of the processing stations 100, 102. Once the profile H has been inserted in its seat, the cylinder is

activated by the pedal and, therefore, moves to the right, into the position

shown in Figure 7. In this way, the plates 14 and, with them, the punches

of stations 100 and 102 advance to the left, drilling the profile H. Once the machining is finished, the cylinder and, consequently, the punches return to

left, so that the machined H profile can be removed.

In the drawings analyzed so far, only three processing stations are shown, for greater ease of reading the drawings. However, the punching machine of the present invention is designed to be able to have a high number of processing stations in a single machine. In particular,

the applicant determined that excellent results are obtained with up to eight

separate processing stations, two of which are able to operate on the whole

length of the profile. Such a pivot configuration can be carried out

with a single machine all the single operations necessary for the realization of a frame.

For completeness of description, figure 8 shows a machine

punching machine equipped with three end processing stations 100, 102 and 104

and two further processing stations 106 and 108 which can perform processing along the entire length of the profile. As evident from the drawing, all of them

five processing stations are accessible from the front, so that the

passage from one station to another is immediate. In addition, there is still room to accommodate up to three other end processing stations.

The different processing stations are not described in detail here, because they are functionally equivalent to the known ones. The particularity of

they are to be driven by a horizontal cylinder. It should also be noted that the cylinder directly drives the processing stations, without the need to transfer the movement to a drawer holder device, which in turn transfers the movement to the processing station (or drawer). Obviously, although the only described processing station 104 has two punches, one

the processing station may comprise any number of punches, di

any section and size, to make holes of various shapes and sizes or to cut the profile.

Naturally, the principle of the invention remaining the same, the forms of embodiment and details of construction may vary widely with respect to what has been described and illustrated above with reference to a form

specific implementation, without thereby departing from the scope of the invention.

For example, the pre-drilled plates 17 are optional: they allow to obtain a significantly greater versatility of use, allowing

to move the guides 18, 20 and, therefore, the processing stations. Flexibility is particularly appreciated if you want to carry out machining

with profiles of larger than average dimensions, or when it is necessary to use new profiles for a change in the range of fixtures. However, it is also possible to provide fixed guides and, therefore, eliminate the need for a pre-drilled plate, although the flexibility of the system suffers.

As regards the guides 18 and 20 provided on the pre-drilled plates and the corresponding connection guides 202 provided on each processing station, it is evident that these could be structurally very different without this modifying the essence of the invention. It is in fact sufficient to allow a decoupable coupling between each processing station and the main fixed body of the punching system. Preferably, this coupling is by sliding, for greater ease of replacement of the processing stations.

Furthermore, the plates 14 described above slide guided by two pins 24 which keep them correctly oriented. Of course, a different number of plugs cannot be ruled out. Similarly, station 104 is described with two sliding elements 213 and two return springs 214. Although this is the preferred configuration, the possibility of using a different number of sliding elements 213 and / or return springs 214 should not be ruled out. .

The embodiments described above all have processing stations placed on two opposite sides of the machine. Naturally, the positioning of the stations on two sides makes it possible to minimize the space occupied and at the same time to maximize the number of processing stations. However, it should be noted that the present invention is advantageous with respect to the known art even in an asymmetrical configuration, with all the processing stations located on the same side of the machine.

In fact, the machine is equipped with a horizontal cylinder and this can work by pushing the punches, also horizontal, allowing an easy disposal of the shavings by simple fall. Thanks to this configuration with

the horizontal A and P axes, the space around each machining station is free, thus allowing the machining of even large profiles. This advantageous feature of the present invention is independent of the fact that the processing stations are placed on one

or on both sides of the cylinder.

PROVV <ISI> ONATO & CO

Claims (10)

CLAIMS 1. Punching machine (1) for profiles (H) with interchangeable processing stations comprising a fixed body (10), inside which a pneumatic cylinder is housed, and a plurality of processing stations (100, 102, 104, 106, 108) activated by the cylinder, characterized in that the cylinder moves along a horizontal axis (A). 2. Punching machine with interchangeable processing stations according to the preceding claim, in which the processing stations are selectively fixed to the fixed body. 3. Punching machine with interchangeable processing stations according to the preceding claim, wherein at least one first processing station (104, 106) and at least one second processing station (100, 102, 108) are selectively fixed on two sides (3, 4) of the fixed body opposite each other. 4. Punching machine with interchangeable processing stations according to the preceding claim, wherein the at least one first processing station and the at least one second processing station are selectively fixed on two sides (3, 4) of the fixed body (10) opposite each other with respect to a plane perpendicular to the axis (A) along which the cylinder moves. 5. Punching machine with interchangeable processing stations according to the preceding claim, in which each processing station is equipped with a punch (206, 208) and in which the movement of the cylinder in a first direction determines the advancement of the punch (206, 208) ) of the at least one first processing station and simultaneously causes the withdrawal of the punch of the at least one second processing station. 6. Punching machine with interchangeable processing stations according to any one of the preceding claims, in which the processing stations can be selectively fixed to the fixed body by means of a sliding connection. 7. Punching machine with interchangeable processing stations according to the preceding claim, in which each processing station comprises a support (200) for connection to the fixed body (10) of the machine, equipped with a connection guide (202) suitable for sliding inside of a corresponding pair of guides (18, 20) fixed to the fixed body (10). 8. Punching machine with interchangeable processing stations according to the preceding claim in which pre-drilled plates (17) equipped with a plurality of holes are fixed to the fixed body (10), the pairs of guides (18, 20) being able to be selectively mounted on the plates pre-drilled (17) in different positions according to the machining station to be mounted. 9. Punching machine with interchangeable processing stations according to any one of the preceding claims, wherein each processing station comprises a punch holder on which at least one punch is mounted and in which said punch holder follows the movement of the cylinder. 10. Punching machine with interchangeable processing stations according to any one of the preceding claims, for the processing of aluminum profiles for making frames. PROVV <ISI> ONATO & CO