Machine for laying out laminar products

Abstract: Machine for laying out laminar products from a bobbin (1) upon which a laminar product (2) is coiled, which comprises means for feed (3) of the coiled laminar product (2) and driving means (4, 5) for the laminar product (2) which facilitate the emergence of same and drive it onto the table (7) upon which it is laid out. It is characterized in that it comprises a second bobbin (9) upon which is coiled a second laminar product (10), driving means (6) for said second bobbin (9) and controlling means which permit manual- or automatic-mode control of laying out of the laminar products (2, 10) on the table (7) in function of certain parameters. The first laminar product is laid out thereby, together with the second laminar product or both at once, in a totally automatic and controlled manner, thus avoiding the operator having to place the paper by hand.

Description: The present invention relates to a machine for laying out laminar products from a bobbin on which a laminar product is coiled. More specifically, the present invention relates to a machine for laying out one or several layers of fabric on a layer of paper. BACKGROUND OF THE INVENTION Known in the art are machines for laying out fabric from a bobbin of fabric which comprises feeding means for the coiled laminar product and driving means for the laminar product which facilitate emergence of same and drive it onto the table upon which it is laid out. The aforesaid means are mounted on a movable carriage running the length of the table. As it moves, the carriage lays the bobbin out on the table until it reaches the end of same, where it is cut or a fold is formed as the direction of path of the carriage is inverted, which carriage then lays a second layer of fabric on the existing layer, and so forth. The machine can thus lay out one or more layers of fabric along the table, as appropriate for each particular case of utilization. FR 2 328 647 A, which corresponds to the preamble of claim 1, discloses a machine for laying out laminar products from a bobbin upon which a laminar product is coiled, which comprises means for feeding the coiled laminar product and driving means for the laminar product which facilitate the emergence of same and drive it on the table upon which it is laid out, which further comprises a second bobbin upon which is coiled a second laminar product and means for driving said second bobbin. EP 0 688 231 A refers to a feeding apparatus for automatically feeding an air-impermeable fabric covering sheet at the time of feeding a fabric into an automatic cutting machine which is provided above an air table at the upstream side of a cutting table of the cutting machine. On the air table, air is blown out from an air nozzle to the cutting table side. The cutting table is capable of conveying a laminated sheet of fabric to be put on a conveyor. When the fabric laminated sheet is delivered on the cutting support plane, it is detected by a fabric sensor, and a delivery roller is driven to rotate, and fabric covering sheet is let-out from a fabric covering sheet roll. When delivery of the fabric is completed, the fabric covering sheet can be cut off by a cutting device. There is frequently a need to lay out a dividing paper for each certain number of layers of fabric laid out, leaving on the work table in alternating manner and in vertical direction a certain number of groups of layers of fabric and layers of dividing paper. The process followed for placing these layers of dividing paper has so far been carried out entirely manually, leaving the fabric laying out carriage stopped at one end of the table until the operator had placed and cut the pertinent layer of paper. Automatic laying out of the fabric with the carriage was then recommenced, until such time as another layer of paper was needed. This process was continued until the end of laying out, which involved a considerable loss of time in comparison with the time taken to lay out fabric in an automated manner. DESCRIPTION OF THE INVENTION The invention resolves the aforesaid drawbacks, while presenting further advantages which will be described below, with a machine comprising the features of claim 1. The first laminar product, together with the second laminar product or both at the same time, can be laid out in a totally automatic and controlled manner, thus avoiding the operator having to place the paper by hand. According to one embodiment, the driving means for the second bobbin are motor-driven rollers. According to a second embodiment, the driving means for the second bobbin are a motor-driven spindle coupled to the second bobbin. According to a third embodiment, the driving means for the second bobbin are feed belts. According to a fourth embodiment, the driving means for the second bobbin consist in a motor which drives the spindle of the bobbin by means of a transmission mechanism. Advantageously, the machine of the invention comprises a driving cylinder which facilitates emergence of the laminar product from the second bobbin. Preferably, the machine of the invention comprises a pressing cylinder which presses against the aforesaid driving cylinder, in such a way that the second laminar product is drawn between the two cylinders. Advantageously, the machine of the invention comprises means for detecting the tension of the second laminar product. Preferably, the machine of the invention comprises at least one plate upon which the laminar products slide. Preferably, the means for detecting the position of the second laminar product are located at the beginning of the plate upon which the laminar products slide. Also preferably, the means for detecting the position of the second laminar product comprise a photoelectric cell. The second bobbin of laminar product can be arranged in different positions. According to one embodiment, the second bobbin of laminar product is located above the line marking the path of the first laminar product from the first bobbin to the table, while according to another embodiment the second bobbin of laminar product is located beneath the line marking the path of the first laminar product from the first bobbin to the table. Advantageously, the first sliding plate is articulated, in such a way that it can move to permit access to the second bobbin, thereby facilitating fitting and removal of the second bobbin onto and from the machine. Preferably, the first laminar product is fabric and the second laminar product is paper. BRIEF DESCRIPTION OF THE DRAWINGS For a better understanding of all that has been set out some drawings are attached in which, schematically and solely by way of non-restrictive example, a practical case of embodiment is shown, in which drawings: Figure 1 is an elevation view of a first embodiment of the invention; Figure 2 is an elevation view of a second embodiment of the invention; Figure 3 is an elevation view of a third embodiments of the invention; Figure 4 is an elevation view showing how the bobbin of paper is changed, the driving means of the bobbin of paper being according to a fourth embodiment of the invention; and Figure 5 is a front elevation view of the driving means for rotating either of the bobbins, according to the fourth embodiment of the invention. DESCRIPTION OF PREFERRED EMBODIMENTS As can be seen in Figure 1, the machine for laying out laminar products comprises a first bobbin 1 of fabric 2, which slides on first 4 and second 5 driving plates. On the second plate 5 paper 10 from a second bobbin 9 is placed on the fabric 2. The fabric 2 and paper 10 together are driven by means of the second plate 5 onto a table 7. Once the desired lengths of fabric 2 and paper 10 have been placed on the table, a cutting device 8 cuts the fabric 2 and paper 10 together. In the embodiment shown in Figure 1, the first bobbin is driven by means of a pair of belts 3, and the second bobbin is driven by means of a pair of motor-driven cylinders 6. The operation of the embodiment shown in Figure 2 is the same as that of the embodiment described for Figure 1. In this case, at the outlet point of the second bobbin 9 the paper 10 passes along a driving cylinder 14 which facilitates its emergence and along a rocker arm 16 which controls the tension of the paper 10. This rocker arm 16 also comprises a sensor (not shown) which monitors the presence of paper 10. In this second embodiment of the invention the second bobbin is driven by means of its own spindle 11, which is motor-driven and thus rotates. As described with respect to the embodiment shown in Figure 2, the operation of a third embodiment, shown in Figure 3, is also the same as that of the embodiment described in respect of Figure 1. In this case, the second bobbin 9 of laminar product 10 is located beneath the line marking the path of the first laminar product 2 from the first bobbin 1 to the table 7. Upon emergence from the second bobbin 9, the paper 10 passes along the driving cylinder 14 mentioned in describing the embodiment shown in Figure 2. This cylinder 14 is pressed by a pressing cylinder 15, in such a way that the paper 10 is drawn between the two cylinders 14, 15, with the pressing cylinder being fixed to the first driving plate 4. At the beginning of the second driving plate 5 is placed a photoelectric cell 17 to detect the beginning of the paper 10, while at the output of the second bobbin 9 is located a sensor which detects the tension of the paper 10. Figure 4 shows how the second bobbin 9 is replaced in the event of it being located beneath the line marking the path of the first laminar product 2 from the first bobbin 1 to the table 7. As can be seen in the figure, the first driving plate is articulated by means of a hinge 19, which permits the plate 4 to be lifted in order to allow access to the second bobbin 9. The driving device of the second bobbin 9 shown in Figure 4 is shown in front elevation view in Figure 5. Rotation of the second bobbin 9 is driven by a motor 12 which meshes by means of a transmission 13 with the spindle of the second bobbin 9. The second bobbin 9 comprises a pair of lateral cones 20 which secure the paper, while its spindle comprises some guides 21 (Figure 4). In the event of the second bobbin 9 needing to be guided laterally, the bobbin 9 can comprise a pair of lateral guide paddles (not shown). The machine of the invention also comprises controlling means (not shown) which permit the laying out of the two laminar products 2, 10 on the table 7 to be controlled in manual or automatic mode in function of parameters such as the intervals of layout of the second laminar product 10 with respect to the first 2 and the length of the layer of the second laminar product 10 and other suitable parameters. It must be understood that the figures show four different driving systems for the bobbins 1, 9, which can be combined in any suitable way. Although the figures show only one type of machine for laying out laminar products, it is obvious that the characteristics object of the present invention are applicable to any known machine for laying out laminar products. It must also be understood that, although the embodiments shown have been described for applications in which the first laminar product is fabric and the second laminar product is paper, the machine of the invention can be applied for the laying out of any laminar product.

Claims: Machine for laying out laminar products, with a first bobbin (1) upon which a first laminar product (2) is coiled, which comprises means (3) for feeding the coiled first laminar product (2) from said first bobbin (1) and driving means (4, 5) for the first laminar product (2) which facilitate the emergence of same and drive it onto a table (7) upon which it is laid out, with a second bobbin (9) upon which is coiled a second laminar product (10), with means (6) for driving said second bobbin (9), and with means (8) for cutting the laminar products (2, 10), characterized in that said second laminar product is a dividing second laminar product (10) for each certain number of layers of first laminar product (2) laid out, leaving on the table (7) in alternating manner and in vertical direction a certain number of groups of layers of first laminar product and layers of dividing second laminar product; and in that the machine comprises controlling means which permit manual or automatic control of laying out the two laminar products (2, 10) on the table (7) in function of parameters such as the interval of laying out the dividing second laminar product (10) with respect to the first (2) and the length of the layer of the dividing second laminar product (10) and further comprises means (17) for detecting the position of the dividing second laminar product (10). Machine, according to claim 1, characterized in that the driving means for the second bobbin are motor-driven rollers (6). Machine, according to claim 1, characterized in that the driving means for the second bobbin (9) are a motor-driven spindle (11) coupled to the second bobbin (9). Machine, according to claim 1, characterized in that the driving means for the second bobbin (9) are feed belts (3) . Machine, according to claim 1, characterized in that the driving means for the second bobbin (9) consist in a motor (12) which drives the spindle of the bobbin (9) by means of a transmission mechanism (13). Machine, according to any of the above claims, characterized in that it comprises a driving cylinder (14), which facilitates emergence of the dividing second laminar product (10) from the second bobbin (9). Machine, according to claim 6, characterized in that it comprises a pressing cylinder (15), which presses against the aforesaid driving cylinder (14), in such a way that the dividing second laminar product (10) is drawn between the two cylinders (14, 15). Machine, according to any of the above claims, characterized in that it comprises means (16) for detecting the tension of the dividing second laminar product (10). Machine, according to any of the above claims, characterized in that it comprises at least one plate (5) upon which the laminar products (2, 10) slide. Machine, according to claim 9, characterized in that the means (17) for detecting the position of the dividing second laminar product (10) are located at the beginning of the plate (5) upon which the laminar products (2, 10) slide. Machine, according to claim 1, characterized in that the means for detecting the position of the dividing second laminar product (10) comprise a photoelectric cell (17). Machine, according to any of the above claims, characterized in that the second bobbin (9) of the dividing second laminar product (10) is located above the line marking the path of the first laminar product (2) from the first bobbin (1) to the table (7). Machine, according to any of claims 1 to 11, characterized in that the second bobbin (9) of the dividing second laminar product (10) is located beneath the line marking the path of the first laminar product (2) from the first bobbin (1) to the table (7). Machine, according to claim 11, characterized in that a first sliding plate (4) is articulated, in such a way that it can move to permit access to the second bobbin (9). Machine, according to any of the above claims, characterized in that the first laminar product (2) is fabric. Machine, according to any of the above claims, characterized in that the dividing second laminar product (10) is paper.

Inventors: BALSELLS VENTURA ANGEL, BALSELLS VENTURA, ANGEL
Applicants: BALSELLS VENTURA ANGEL, BALSELLS VENTURA, ANGEL
Application year: 1996
Main classification: B65H45
IPC codes: B65H35, B65H16, B65H39