ES2219218T3 - WINDING SYSTEM FOR DUROPLASTIC COMPOUND BANDS. - Google Patents

Abstract

System for winding strips (4) of duroplastic compound, especially sheet moulding compound, on to a transport roll (2) comprises storing the rolls so that they can rotate on individual transportable frames (5). The axis (6)of the roll core (7) is kept horizontal and the rolls are arranged below the strip feed device.

Description

Winding system for bands Duroplastic compounds

The invention relates to a device of winding for SMC bands on transport rollers.

The SMC (sheet molding compound = compound of sheet molding) duroplastic component masses are known, which are arranged in the form of thin plates, and are shaped by pressing procedure (see for example the document US-A-5 601 770.

The SMC is manufactured with conventional machines, and, or it is wound on a winding core until it forms a transport roller, or is folded in Zigzag and packaged in boxes.

In the manufacture of transport rollers a reverse gear is normally used (see figure 1), so that the SMC machine does not need to be stopped (see for example document EP-A-0 327 048).

The inversion gear is formed by a rocker 1 on which two empty rollers of transport 2, which are driven by a motor 3a. When he first roller has reached its theoretical weight, band 4 of SMC is cut and the rocker 1 scales, driven by the 3b motor, at second transport roller 2 to the filling position. TO then, band 4 of SMC is deposited on the core of winding of the second transport roller (see figure 2), and the already filled transport roller is removed and deposited on a metal frame (see figure 3). A roller of empty transport is then placed on the gear of investment. With this, in those investment gears they change the transport rollers constantly and without stops production.

The metal armor of figure 3, which supports the transport rollers, is composed of 2 to 4 transport rollers, usually 4.

The total weight of the SMC stored on the frame It is 800 to 1600 Kg., in the case of 2 to 4 rollers.

The described system has different inconveniences:

I.

Two are needed phases

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winding around a core

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deposit of transport rollers on a metal frame

II.

The phases have to be repeated for each transport roller.

III.

An increase of weight of the transport roller up to more than 600 kg causes a increased space and gear size needs of investment.

IV.

  An increment of the weight of the transport roller causes an increase in the engine power that drives the reverse gear.

The invention aims to improve a winding device according to the preamble of the claim 1, such that also the rollers of heavier transport can be easily wound, with reduced space requirements

This objective is achieved, according to the invention, yes

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each roll of transport is rotatably supported on a single frame transportable,

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the rollers of transport have lateral faces and are supported on bodies rolling in the frames, and

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the diameter of Winding core of the transport rollers is at minus 400 mm

This has the advantage that even very heavy transport rollers can be wound so simple. The necessary space is greatly reduced.

The drive for transport rollers in the winding process is reasonably controlled, through a transmitter arranged in the machine for the SMC band manufacturing.

In an advantageous configuration, a empty transport roller below the device feeding for the belt, next to the transport roller that is rolling, and that can be moved to the position of filling, if necessary, by means of a displacement cylinder. Since the transport roller is placed on a frame, the entire frame is moved. Preferably, the device Power supply features a cutting device for cutting the band.

In a preferred form, according to the invention, the winding core diameter of the transport rollers It is located between 400 and 600 mm.

Other features of the invention are they appear from the figures that are described below.

Figures 1 and 2 show a gear of investment according to the state of the art, as clarified in the descriptive introduction. Figure 3 shows a corresponding metal frame, on which the rollers 2 of transport.

Figure 4 represents the system of winding according to the invention. With reference number 12, called a known machine for the manufacture of a band SMC Together with that machine 12 two frames 5 have been placed, on which is, respectively, a transport roller 2. The frames 5 are provided with skates 16, so that they can move easily. On the frames 5 are supported the transport rollers 2, rotatably, on bodies 10 rolling. For this, the transport rollers 2 have side faces 9.

The transport rollers preferably have a width of 1.50 m. The diameter of the winding core is at least 400 mm, and is preferably located between 400 and 600 mm

Once SMC band 4 has left the machine 12, arrives at a feeding device 8 that is located above the transport rollers 2. To this power device 8 has been assigned a device cut 15, with which the band 4 of SMC can be cut.

The transport rollers 2 are driven by a drive 11, which is controlled by a transmitter 13 placed in the machine 12.

Figure 4 shows how the coil is being wound transport roller 2a. When that transport roller 2a has reached its ideal weight, the cutting device 15 cuts the band 4 of SMC. Then the displacement cylinder 14 displaces to the transport roller 2b empty to the filling position, and the SMC band 4 is deposited on the winding core of that transport cylinder 2b. It is advantageous that the cylinder 14 of displacement respectively displaces two transport cylinders 2a, 2b at the same time. In this way when moving the empty roller of transport 2b, the cylinder is also displaced at the same time of transport 2a complete to a storage position.

With this winding device you can manufacture 1600 kg rollers easily.

The advantages are:

to)

The previous phases of the winding and the discharge are unified. This disappears a process.

b)

possibility of manufacture very heavy rollers (> 1000 Kg.) with little need for space and low engine powers.

If, for example, rollers of 1600 Kg. With a conventional cylinder winding system, and a width of the SMC of 1.50 m., the following would be obtained comparative values:

System feature System conventional Device winding from winding according to the invention Roller weight 1600 kg 1600 Kg Ground surface 9.1 m 2 3.75 m2 width x height system occupied 3.1 x 2.6 2.5 x 1.5 Engine power 1.5 Kw any Power of gear 150 kg

Claims (5)

1. Winding system for bands (4) of SMC (sheet molding compound = sheet molding compound), being connected after a machine (12) for the manufacture of a band (4) of SMC, and winding the finished SMC belt on transport rollers (2), a feeding device (8) having been assigned to the winding system, which guides the SMC band from the machine for manufacturing the SMC belt to the rollers of transport (2) of the winding system, and the transport roller (2) to be wound below the feeding device (8) of the winding system being located, and the axes of the transport rollers (2) being arranged in a horizontal direction, characterized in that

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each roll of transport (2) is housed, rotatably, on a single transportable frame (5),

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the rollers of transport (2) have side parts (9), and are housed in the frames (5) on rolling bodies (10), and

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the diameter of winding core (7) of the transport rollers (2) is of at least 400 mm

2. Winding system according to claim 1, characterized in that a drive (11) is provided for the transport rollers (2), which is controlled by an emitter (13) placed in the machine (12) for the manufacture of the SMC band (4). 3. Winding system according to claim 1 or 2, characterized in that a roller has been placed next to the transport roller (2a) being wound, and below the feeding device (8) for the band (4). (2b) of empty transport, which is moved if necessary by a displacement cylinder (14) to the filling position. 4. Winding system according to one of the preceding claims, characterized in that the feeding device (8) has a cutting device (15) for cutting the band (4). 5. Winding system according to one of the preceding claims, characterized in that the diameter of the winding core (7) of the transport rollers (2) is between 400 and 600 mm.