JPH078507Y2 - Sheet cutting machine - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is used for a cutting process of a sheet molding compound (hereinafter referred to as SMC) applied to a molding material of reinforced plastic (hereinafter referred to as FRP). In particular, it relates to SMC sheet cutting machines.

(Prior Art) An SMC sheet (hereinafter, simply referred to as a sheet) 1 has a thickness of 3 mm, a width of 1 m and a length of 50 m wound around a core tube 2 as shown in FIGS. 2 and 3. For example, the ones that are aged for 24 hours or more are handled. Since the sheet 1 has strong adhesiveness, the upper and lower surfaces thereof are covered with the upper film 4 and the lower film 5 made of polyethylene or the like so that the sheets 1 do not stick to each other.

In the FRP forming step, the end portions of the roll body 3 are unrolled and the sheets 1 cut into a predetermined length are stacked, and then pressed, heated and cured by a press or the like. Sheet 1
Conventionally, for the cutting process, the belt conveyor system x as shown in FIG. 4 and the clip system y as shown in FIG. 5 have been adopted.

In the belt conveyor system x, the upper film 4 and the lower film 5 are peeled off on the feeding side of the pinch roll a and wound on the upper winding roll 6 and the lower winding roll c, while the sheet 1 fed from the pinch roll a. Is conveyed by the belt conveyor d, and when a predetermined length is taken out, it is cut by a cutting tool e such as a cutter to form a cut product f.
When this cutting operation was repeated and the required number of cut products f were stacked on the table g, the whole was weighed and then sent to a press machine (not shown).

In the clip system y, a guide beam h is provided above the payout side of the pinch roll a along the payout direction of the sheet 1, and the guide beam h enables the clip i to move back and forth (left and right in FIG. 5). It is a thing. After the clip i is opened and the end portion of the sheet 1 is sandwiched, when the clip i moves forward and a sheet of a predetermined length is taken out, it is cut by a cutting tool e to form a cut product f. It By repeating this cutting operation, the required amount of the cut products f were stacked on the table (not shown).

(Problems to be solved by the invention) However, in the above-described belt conveyor system x, the sheet 1 is bent unless the feeding speed of the sheet 1 fed from the pinch roll a and the feeding speed of the sheet 1 by the belt conveyor d are synchronized. There was a problem. Further, since the resin paste of the sheet 1 and the pigment for coloring adhere to the surface of the conveyor belt, it is necessary to clean the surface of the belt regularly. Especially, when the color tone of the sheet 1 changes, this cleaning is required. It took a lot of time to do the work carefully.

Further, in the clip method y, the mechanism is complicated because the feeding speed of the pinch roll a and the traveling speed of the clip i are synchronized. Moreover, since the clip i is reciprocally moved in the horizontal direction, it not only lacks safety but also
Since the returning operation, which is performed each time the clip i grasps the end portion of the seat 1, is a dead time, the workability is hindered from being improved. Further, the clip i is also contaminated with the resin paste of the sheet 1, the pigment for coloring, and the like, like the above-mentioned conveyor belt, so that there is a problem that a lot of time and labor are required for cleaning.

In view of such conventional circumstances, the present invention proposes a structure in which the transport mechanism for cutting the sheet fed out from the pinch roll and delivering it to the next step has a structure that does not become contaminated with resin paste or the like. It is an object of the present invention to provide a sheet cutting machine designed to improve workability and safety of cutting processing.

(Means for Solving the Problems) The sheet cutting machine of the present invention cuts a sheet whose upper surface is covered with the upper film and whose lower surface is covered with the lower film, and the sheet fed out by the pinch roll is The upper film and the lower film peeled from this sheet are wound on the upper winding roll and the lower winding roll, respectively, and cut into a cut product of a desired length by a cutting tool provided on the feeding side of the pinch roll. It is made possible, and while the lower film is circumvented below the cutting tool between the vicinity of the pinch roll and the lower winding roll, the cut product is supported and moved to the feeding position. The lower film guide roll is formed.

(Operation) The cut product of the sheet cut into a desired length by the cutting tool is sent to the delivery position together with the lower film moving on the lower film guide roll.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. Note that the directions in this description will be referred to as left in FIG. 1 as front and right as rear. Further, since the structure of the roll body 3 is the same as that of the conventional example, the same parts are designated by the same reference numerals and the description thereof will be omitted.

The sheet cutting machine 11 shown in FIG. 1 has a pair of pinch rolls 1
2, 12, upper winding roll 13, lower winding roll 14, cutting tool 15
And the lower film guide roll 16 as a main part.

Either one of the pinch rolls 12 and 12 can be brought into close contact with or separated from the other roll, and the sheet 1 is fed when the roll is in close contact.

As shown in FIGS. 2 and 3, the sheet 1 has an upper surface covered with an upper film 4 and a lower surface covered with a lower film 5.

The upper take-up roll 13 is for taking up the upper film 4 peeled from the sheet 1, and the take-up torque acts on the upper film 4 in conjunction with the feeding operation of the pinch roll 12.

The lower winding roll 14 is for winding the lower film 5 peeled from the sheet 1, and has the same structure as the upper winding roll 13.

The cutting tool 15 cuts the sheet 1 in the width direction (direction perpendicular to the paper surface in FIG. 1) on the feeding side of the pinch rolls 12, 12. A triangular cutter or the like is used for the cutting tool 15, and is attached to, for example, a holder or the like guided by a guide beam (not shown) installed above the seat 1.

The lower film guide roll 16 sends out a cut product 17 of the sheet 1 cut into a desired length by a cutting tool 15 at a position E
It is for moving the lower film 5 up to and including the film bypass rolls 18A, 18B, 18C, 18D and the receiving roll 19
It consists of A, 19B, 19C and the delivery roll 20, and the free roll is applied to all of them.

The film bypass rolls 18A, 18B, 18C and 18D are the sheet 1
In order to circumvent the peeled lower film 5 from the entry area of the cutting tool 15, the lines connecting the centers of the rolls 18A, 18B, 18C and 18D are arranged so as to form a trapezoid.

The receiving rolls 19A, 19B, 19C send out the cut product 17 of the sheet 1 cut by the cutting tool 15 from the position of the cutting tool 15 to a position E
To move with the lower film 5 up to
They are arranged at a distance from each other in the front-rear direction.

The delivery roll 20 has a larger diameter than the receiving rolls 19A, 19B, and 19C in order to peel off the lower film 5 from the cut product 17 and facilitate the feeding operation of the cut product 17, and the front end receiving roll 19C. Are arranged in parallel with each other at a distance.

If necessary, a cut product may be
A pedestal (not shown) for stacking 17 in an inclined shape is provided.

Next, the operation of the above embodiment will be described.

In advance, the sheet 1 is unwound from the roll body 3 and the upper film 4 is wound around the upper winding roll 13, while the lower film 5 is wound around the lower winding roll 14 as shown in FIG. At this time, the lower film 5 has a shorter length for passing the lower film guide roll 16 than the upper film 4, so that a separately prepared film may be connected.

First, when the pinch rolls 12 and 12 are driven, the upper film 4 is taken up by the upper take-up roll 13 and the lower film 5 is taken up by the lower take-up roll 14 via the lower film guide roll 16. The seat 1 is extended forward.

The sheet 1 is peeled off the upper film 4 by the pinch roll 12, the lower film 5 is peeled off by the film bypass roll 18A, passes below the cutting tool 15, and then is mounted on the lower film 5 again and received. The lower film 5 is moved forward on 19A, 19B and 19C. At this time, rolls 18A and 1 respectively
8D, 19A, 19B, 19C and 20 do not touch the seat 1 directly.

Next, when the sheet 1 having a desired length is fed out, it is cut by the cutting tool 15. At this time, the lower surfaces of both sides of the cut portion of the sheet 1 are interleaved with the film bypass roll 18 via the lower film 5.
Since it is supported by A and 18D, the cut product 17 is smoothly cut.

After that, the cut product 17 moves forward together with the lower film 5, and is then sent out from the sending roller 20 onto a receiving table (not shown).

(Effect of the invention) In the present invention, the cut product obtained by cutting the sheet fed out from the pinch roll to a desired length is moved by the lower film guide roll which is designed to support the cut product through the lower film. This lower film guide roll is not contaminated with the resin paste or pigment of the sheet, so the cleaning work at the time of color change of the sheet is not only significantly reduced, but also the feeding speed and feeding speed of the sheet fed from the pinch roll It has an excellent advantage that the delivery speed of the cut product delivered to the position can be the same with a simple structure.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a view showing a main part of a sheet cutting machine, FIG. 2 is a perspective view of a roll body in which a sheet is wound, and FIG. 3 is a part III of FIG. FIG. 4 is an enlarged view of FIG. 4, and FIG. 4 and FIG. 5 are views for explaining the outline of the cutting product feeding device of the cutting machine in the conventional example. 1 ... Sheet, 4 ... Upper film 5 ... Lower film, 11 ... Cutting machine 12 ... Pinch roll, 13 ... Upper winding roll 14 ... Lower winding roll, 15 ... Cutting tool 16 ... Lower film guide roll 17 ... Cut product E ... Delivery position

Claims (1)

[Scope of utility model registration request] 1. A sheet for cutting a sheet whose upper surface is covered with an upper film and whose lower surface is covered with a lower film. The sheet fed out by a pinch roll is an upper film and a lower surface peeled from this sheet. The film is wound on the upper winding roll and the lower winding roll, respectively, and can be cut into a cut product of a desired length by a cutting tool provided on the feeding side of the pinch roll. Between the vicinity and the lower winding roll, a lower film guide roll was provided that bypasses the lower film below the cutting tool and supports and moves the cut product to the delivery position. A sheet cutting machine characterized by.