BRPI1101435A2 - conductive equipment for rigid metal tape or strip type materials for spiral tube forming machines - Google Patents

Abstract

DRIVING EQUIPMENT OF RIGID TYPE RIBBON MATERIALS OR STRIPS FOR SPIRAL PIPE FORMING MACHINES. For spiral tube or shell forming machine (1) it processes strips (2) wrapped in a roll (3), first forming a profile of one or more continuous flat strips (2) of metal or other smooth material which are manufactured into continuous spiral form interlocked with each other to form a continuous length of flexible tube or spiral tube and said strips (2) of raw material are generally supplied in the form of pancakes, rolls (3) or coils. which is a feeding equipment (4) for unrolling at least one coiled strip (2) guided by spiraling guides (5) (6) along the main axis (7) leading to the entry of a forming box (8); and said guides (5) secure the strip (2) through cylindrical or tapered rollers (9) which induce a twist in the strip (2) resulting in said spiral path (6); in order to keep the strip (2) in the spiral path (6) includes secondary guides (10) which together with the guides (5) act as a deformation and flexure limiting strap (2).

Description

INVENTION PATENT DESCRIPTIVE REPORT "RIGID TYPE MATERIAL DRIVING MACHINE EQUIPMENT FOR PIPE FORMING MACHINES

SPIRAL"

The present patent application of the title and object of description and claim deals with an inventive solution regarding the feeding of spiral tube forming machines which can be translated as a raw material feeder equipment. rigid strips, profiles or wires.

This time the unprecedented equipment now claimed was designed with the aim of simplifying the transportation of the raw material stored in coils or rolls, notably for the beginning of the profiling process for the formation of continuous spiral tubes.

BACKGROUND ART: In order to provide an overview of the context set forth in the introductory table, a brief explanation of the state of the art for strip or strip processing machines resulting in spiral tubes and the means for feeding said machines will be provided. , where it will be possible for a person skilled in the art to recognize the aspects that guide the need for development and technological evolution to guide the coiled metal strips or tapes to the machines mentioned above.

In the prior art some solutions described are known from US 4,783,980, US 4,738,008, US 4,597,276, US 6,067,829, US 4,724,596, among others.

U.S. Patent 4,783,980 of 11/15/1988 deals with equipment for producing spiral coiled tubing which includes a rotating head mounted for rotation about a mainshaft. Raw material in the form of reel-wrapped tape or strips feeds the equipment. Said feeding mechanism is mounted on the rear ■/2/8 of the rotating head, a guide beam takes the strip from one of the spools orienting it to the rotating head. The rotary head is mounted on the main axis of rotation which supports a set of tools forming a strip material forming mill roller. The strip is guided from a point behind the rotating head to a point in front of or below the rotating head along the axis through a steeply curved path. It also includes a rewind system that is used to rewind the flat strip over the reel.

US 4,738,008 of 4/19/1988 deals with equipment for forming tubes from metal strip. Feeding takes place by removing material from the inside diameter of the coil, perpendicular to the machine axis, which is positioned around the tube forming process.

US 4,597,276 of 7/1/1986 deals with equipment for making a continuous tubular metal strip structure. The metal strip is fed perpendicular to the machine axis for forming rollers mounted on the stocked face rotating about a horizontal axis, a set of pressure rollers positioned around a chuck for interlock the profiled strip.

US 6,067,829 of 5/30/2000 deals with equipment for

for producing a spiral tubular structure from two nested profiles delivered by two coils. Power is parallel and linear to the rotary shaft using a variable voltage device to maintain process control. US 4,724,596 of February 16, 1988 deals with equipment for

For the production of coiled pipe from a cross-sectional metal strip through which the strip is supplied by the coils and forming a profile, this profile is coiled without interlocking or interlocking. The interlocking occurs in a second step where the axial velocity is greater than the axial velocity of the spiraling process. This speed differential causes the spiral profile to interlock.

As can be seen the interlocking spiral tube making machines, also known as. carcass are common in the state of the art. The tubes are made from a profile from a continuous flat strip of metal or other smooth material which is subsequently profiled and subsequently coiled in continuous spiral form and interlocked with each other resulting in the flexible tubing or tube.

Strips or tapes are usually stored in the machine in the form of pancakes, rolls or spools. The strip is transported from storage to the processing point perpendicular to the rotary axis, linearly aligned with the same axis, or in a combination of said linear and perpendicular shapes.

The feeding and supply of the strips is done in the same way in the described patents.

It is found that strips of large cross-section or formed with hard materials are difficult to bend and thus represent greater difficulty in creating and passing the path between the coil and the strip processing and forming point. The solution already applied to this problem was to position the bobbin eccentrically in front of the machine, so that the strip is perpendicular to the machine axis to feed the forming box without twisting the tape.

The traditionally used mechanisms have some disadvantages, such as:

® Eccentric raw material storage area on the front side of the machine results in the possibility of loading only a very small amount of raw material into the machine. The small amount of raw material results in frequent interruptions and long downtimes in the profiling process for raw material recharge. This leads to a low level of productivity.

to the machine.

• Stocking of eccentric raw material creates large centrifugal forces resulting in the need to include a

dynamic balance balancing to compensate for this eccentricity and nullify forces. Depending on the consumption of raw material the balancing is changed and therefore the balancing system needs to be adjusted during the tube forming process.

• In the case of thin and flexible raw material strips, it is possible to store the material at the rear of the machine, which makes it possible to store larger quantities. Material transport from the rear to the front of the machine is performed in a combination of linear and perpendicular path feed, which requires drastic changes in the position of the strip during its trajectory.

The purpose of the present invention is to simplify the path of

material stocked to the processing area within the machine. In a preferred embodiment the present invention in the form of "RIGID METAL CONDUCTOR DRIVING MACHINE EQUIPMENT FOR SPIRAL PIPE FORMERS" is anchored in the concept of providing the tape in a parallel spiral path of the rotational axis. Particularly it includes advantages for the processing of strips with large cross-sections formed by hard and / or few flexible materials. The path taken by the strip in the proposed solution reduces the deformations thereof and consequently reduces the deformations and internal stresses of the material that are not desirable.

As a practical result of the present invention there is no need to counterbalance all eccentric forces that are eliminated due to the positioning of the stockpiled material transported around the axis of rotation. Centralized storage - enables increased tape storage capacity thereby reducing downtime for raw material loading. It also optionally includes a second tape storage area, which allows the supply of raw materials in parallel time to the tube forming process. ,

As there are no sharp curves along the tape path the material transport requires much less effort which allows better control over the feed.

DESCRIPTION OF THE DRAWINGS: In addition to the present description in order to gain a better understanding of the features of the present application, attached hereto is a set of drawings, in which, by way of example, although not limitation, An embodiment is illustrated in the art in which the innovation of feeding a claimed spiral tube forming machine, where:

Figure 1 is a perspective view of the present invention, feeding equipment for spiral tube forming machines;

Figure 2 represents a side view of the present invention feeding equipment for spiral tube forming machines;

Figure 3 is the opposite side view of the present invention, feeder equipment for spiral tube forming machines;

DETAILED DESCRIPTION: The following detailed description is to be read and interpreted with reference to the drawings shown, where they are highly diagrammatic, representing a preferred embodiment of the equipment, and not intended to limit the scope of the invention. limited only to that set out in the claim framework. From Spiral Pipe Forming Machine:

The spiral tube or shell forming machine (1) processes strips (2) wrapped in a roll (3), first forming a profile of at least one continuous flat strip (2) of metal or other smooth material which is manufactured. continuous coiled coil which interconnects segments with one another to form a flexible tube or spiral tube length (1).

The processing results in a flexible structural pipe as the pipe itself or the first layer called the shell (1) that structures the formation of a pipe with several overlapping layers. .

The raw material strip (2) is generally supplied in pancake form or in rolls (3) or coils. The raw material is wound at the rear end of the machine in the magazine part of the machine. Multiple coils can be welded to allow longer runs of profiles and forming pipes. In case the machine is run with several storage compartments, magazine loading can be performed while the machine is running (parallel time in pipe production) or during machine stops. Raw material magazines can be adjusted in width to allow for different strip sizes (2).

The embodiment of the equipment, "RIGID TYPE MATERIALS CONDUCTOR EQUIPMENT OR RIGID METAL STRIPS FOR SPIRAL PIPE FORMERS" described in this constructive detail topic of the invention is provided by way of example only. Changes, modifications and variations may be made to any other particular constructive embodiments by those skilled in the art without, however, departing from the objective disclosed in the patent application, which is defined by the appended claims. The present invention "RIGID METAL CONDUCTOR RIGID TYPE MATERIAL CONDUCTOR EQUIPMENT FOR SPIRAL PIPE FORMING MACHINES" (1) processes strips (2) wrapped in a roll (3) first forming a profile of one or more flat continuous strips (2) of metal or other smooth material which manufactured products are coiled continuously interlocked to form a continuous length of said flexible tube or spiral tube and said Raw material strips (2) are generally provided in the form of pancakes, rolls (3) or bobbins including feeding said machine in which a feeder equipment (4) for unwinding at least one coiled strip (2) driven by guides (5) in spiral path (6) along the main axis (7) leading to the entry of a profiling box (8); and said guides (5) secure the strip (2) through cylindrical or tapered rollers (9) which induce a twist in the strip (2) resulting in said spiral path (6); in order to keep the strip (2) in the spiral path (6) includes secondary guides (10) which together with the guides (5) act as a deformation and flexural limiter of the strip (2). The feeder equipment (4) controls the feed rate of the strip (2) by voltage and / or speed that is synchronized with the profile speed imposed by the profiling box (8) and subsequently the feed rate by adjustments in the settings. relations between the forming speed of the spiral tube (1) formed by the actuation of press rollers (11), which functionally operate in parallel as guides and finalizers for interlocking the already profiled tape (12) after the forming box (8). It includes a sequence of profiling roll pairs mounted on the profiling box (8), in a particular sequence on the driven and adjustable shafts (13), to allow pressure and profiling variation. Said profiling box (8) is mounted directly on the rotating face (14) of the machine, or in an adapter system (15) which allows to vary and adjust the position of the profiling box (8) so that it can be fed of the profiled tape (12) on the press rollers (11) while maintaining the flexibility of spiral tube production (1) in various configurations regarding profile size, diameter and thickness.

Feeding the already profiled tape (12) from the profiling box (8) to the indirect spiraling process by making a bend or a loop in which the box is fixedly mounted in the position relative to the face ( 14) rotary.

In one embodiment, optionally, the main axis (7) comprises a through hole along its longitudinal axis, configured as a pipe allowing the passage of a primary element to form a base for the tube. spiral (1).

A mandrel (16) which rotates in the same direction as the axis of rotation (7) but is offset from it, allowing the spiral tube (1) to slide. This lag in the speed of the spindle (16) relative to the axis of rotation (7) allows the spiral tube (1) already interlocked and facilitated to exit the machine.

Claims (7)

1. "RIGID TYPE MATERIAL DRIVING EQUIPMENT FOR SPIRAL TUBE FORMING MACHINES OR STRIPS" for spiral or tube forming machine (1) processes strips (2) rewound (3), first forming a profile of one or more flat continuous strips (2) of metal or other smooth material which they are manufactured are coiled continuously interlocked to form a continuous length of flexible tube or spiral tube and said strips (2) of Raw materials are generally supplied in the form of pancakes, rolls (3) or bobbins. FEATURED by feeding said machine into which a feeder equipment (4) for unrolling at least one coiled guide strip (2) (5) in a spiral path (6) along the main axis (7) leading to the entry of a profiling box (8); and said guides (5) secure the strip (2) through cylindrical or tapered rollers (9) which induce a twist in the strip (2) resulting in said spiral path (6); in order to keep the strip (2) in the spiral path (6) includes secondary guides (10) which together with the guides (5) act as a deformation limiter and deflection of the strip (2). 2. "RIGID TYPE MATERIAL DRIVING MACHINE EQUIPMENT FOR SPIRAL TUBE FORMING MACHINES", according to claim 1, characterized by the fact that the feeder equipment (4) controls the feed rate of the tension and / or velocity strip (2) this is synchronized with the forming speed imposed by the forming box (8) and subsequently the feed rate by adjustments in the relationships between the forming velocity of the spiral tube (1) formed by the actuation of press rollers (11), which functionally operate in parallel as guide and finishers for interlocking the profiled tape (12) after the profiling box (8). 3. "RIGID TYPE MATERIAL DRIVING MACHINE EQUIPMENT FOR SPIRAL TUBE MACHINERY" according to claim 1, characterized by the fact that it includes a sequence of pairs of rollers mounted in the forming box. (8), in a particular sequence on the driven and adjustable axes (13), to allow pressure variation and profiling. 4. "RIGID METAL DRIVING MACHINE EQUIPMENT FOR RIGID TUBE FORMING MACHINES" according to claim 1, characterized in that the profiling box (8) is mounted directly to the face (14 ) of the machine, or in an adapter system (15) which allows to vary and adjust the position of the profiling box (8) so that it allows direct feeding of the pre-profiled profile (12) in the press rollers (11) maintaining the flexibility of spiral tube production (1) in various configurations. 5. "RIGID METAL CONDUCTOR DRIVING EQUIPMENT FOR SPIRAL TUBE FORMING MACHINES" according to claim 1 or 4, characterized by the fact that the feed of the preformed profile from from the profiling box (8) for the indirect spiral process by making a curve or a loop in which the box acts fixedly in the position relative to the rotating face (14). 6. "RIGID TYPE MATERIAL DRIVING MACHINE EQUIPMENT FOR SPIRAL TUBE MACHINERY" according to claim 1, characterized in that in one embodiment, the mainshaft (7) comprises a hole through its longitudinal axis, configured as a pipe that allows the passage of a primary element to form a base for the spiral tube (1). 7. "RIGID METAL DRIVING MACHINE EQUIPMENT FOR SPIRAL TUBE FORMING MACHINES" according to claim 1, characterized in that it includes a mandrel (16) which rotates in the same direction as rotation (7) but out of phase, allowing the spiral tube (1) to slide.