JPH0777735B2 - Automatic cutting and weighing equipment in hot press molding using SMC - Google Patents

Description

TECHNICAL FIELD The present invention relates to an automatic cutting and automatic weighing device in hot press molding using SMC.

(Prior Art) Hot press molding using a conventional Sheet Molding Compound (hereinafter abbreviated as SMC) has the following steps. That is, as shown in FIG. 2, set the roll-shaped SMC, S
MC unwinding, peeling of protective film on both sides or one side, cutting, stacking of cut pieces for one set, weighing, transfer, and loading into mold.

In this cutting process, the cutting pattern of each molded product is composed of several kinds in order to improve the flow of SMC during molding. However, the conventional cutting machine does not have a function of automatically changing the cutting length according to the cutting pattern. Therefore, when cutting SMC, a machine was used to cut the width direction as it was and only the length direction was cut to a certain size, and other sizes were cut manually.

Further, in the weighing step, a material having a weight determined for each molded product is put into the mold so that the material is spread to every corner of the molded product and the excess material does not overflow from the mold. It is done for that. For this reason, the worker must have a predetermined number of SMCs of various sizes, for example, 1200mm x 600mm, depending on the molded product.
… 2 sheets, 600mm × 400mm… 4 sheets, 600mm × 200mm… 2 sheets etc. are stacked and placed on the table of the weighing machine. And
While looking at the display, I cut the shortage and added it. This deficiency was the adjustment that had been made so far.

As described above, both the cutting process and the weighing process so far have been performed manually.

(Problems to be solved by the invention) As described above, since the cutting process and the weighing process have conventionally required manpower, such a hot press molding production line cannot be unmanned and further cost reduction can be achieved. I was without it.

Also, the operator was combined as a set of molded products.
SMC of 10 to 40 kg had to be transported to a weighing machine or transfer device in a small amount, which required a great deal of labor.

In addition, since the SMC has large variations in thickness and weight from the manufacturing method, even if it is cut into the same length, the weight per unit length differs between the lot and the unwinding part and the winding end part. , SMC for weight adjustment was cut out and added for each set of molded products.

The present invention has been made in view of the above drawbacks, and SMC
The purpose of the present invention is to construct an unmanned SMC hot press molding production line by eliminating the manual work required for the SMC cutting and weighing steps of the hot press molding production line using.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention relates to a bite roller that takes in a sheet-like SMC, a feed roller that operates in synchronization with it, and sends out a sheet-like SMC, and a bite roller. A slitter that cuts the longitudinal direction of the sheet-shaped SMC provided between the feed roller and a short-cutting unit that cuts the short side direction of the sheet-shaped SMC next to the feed roller are provided with the SMC cutting device. Constitute.

In addition, after the SMC cutting device, an SMC transfer conveyor and then a weighing machine with a drive conveyor were installed. Between the transfer conveyor and the drive conveyor, the tip of the sheet SMC sent by the transfer conveyor has passed, and the sheet S
A weighing device is provided with a detection device that notifies the weighing machine that the MC has further moved and the end has passed.

Further, a control device equipped with a microcomputer for controlling the cutting device and the weighing device is provided. With these, it becomes the configuration of the whole device of automatic cutting and automatic weighing.

The following functions are added to the microcomputer that is not available on the conventional SMC thermoforming production line.

(1) As for a cutting machine, if cutting information such as a cutting size and the number of cuts according to a cutting pattern for each molded product is input in advance, the cutting is performed continuously according to the instruction.

(2) As for the weighing machine, one or two SMCs sent from the cutting device at one time are continuously weighed and integrated, and those data are taken in and the taken-in data is taken. Based on, calculate the cutting length of SMC which is the final weight adjustment amount for one set, and instruct the cutting machine.

(Function) In the present invention, when the sheet-shaped SMC1 is supplied to the biting roller 2 in the cutting of the sheet-shaped SMC, the sheet-shaped SMC1 passes through the slitter 3 which cuts in the longitudinal direction and is fed to the next feed roller 4. . In this case, when the control device issues a cutting instruction in the longitudinal direction, the sent sheet-like SMC is cut when it passes through the slitter 3, and when it is not instructed, it is not cut and the next feed roller is not cut. Sent up to 4,
Next, the feed roller 4 feeds the cut portion 5 in the lateral direction.

That is, the slitter 2 is used to cut the SMC in the longitudinal direction,
Press the reset button on the controller 13 to adjust the zero point.
After that, from the operation panel 14 of the control device 13, the cutting dimension, the number of sheets,
When information on cutting such as SMC is input and the operation of the device 13 is started, the SMC is sent to the cutting unit 5 by the feed roller 4 and cut according to the instruction of the control device. Then, the cut SMC1 is sent to the drive conveyor 8 integrated with the weighing machine 9 by the carrying conveyor 7 that is installed next to the cutting unit 5 and carries the SMC1. In addition, this cutting device 6
With each cut, the operation of the feed roller 2 and the like stops.

The weighing machine 8 starts weighing when the tip of the SMC piece 11 passes directly under the optical sensor of the detection unit 10, and when the end of the SMC piece 11 passes directly under the optical sensor of the detection unit 10, the drive conveyor. The movement of 8 stops. When the movement of the drive conveyor 8 is stopped and the weighing machine 9 becomes stable after several seconds, the displayed weight is taken in and the weight taken in is added up.
After that, the load of the weighing machine 9 becomes free and the SMC piece 1
Prepare for transportation of 1. When the weighing machine 9 is in the free state, the SMC piece 11 on the drive conveyor 8 is conveyed by a separate (not shown) conveying device onto the device for inserting into the mold. And
Cutting device 6 when SMC piece 11 on drive conveyor 8 is gone
Starts to move, and the feed roller 4 feeds the next sheet-shaped SMC1. In this way, cutting, weighing and carrying are automatically repeated.

Weigh the cut pieces one after another and integrate them. The cutting of the SMC (weight adjustment amount), which is the end of one set of molded products, is performed as follows based on the value weighed by the weighing machine. For example, if the number of SMC cuts for one set is 10, the second from the end, that is, 9
The weight per m is calculated by dividing the measured weight of the first piece of SMC by the length of the piece of SMC. On the other hand, the integrated weight of the first to ninth SMC cut pieces is subtracted from the set weight for one set to calculate the weight of the SMC to be cut at the tenth sheet. The cut length of the 10th SMC is obtained by dividing the weight of the 10th SMC by the weight per m of the 9th sheet calculated above. Such a calculation is processed by the microcomputer incorporated in the control device, and the cutting length of the last SMC for one set is instructed from the control device to the cutting machine.

In this way, the cutting work, which has been performed manually by hand, and the weighing work, in which the adjustment allowance is cut and added while observing the display of the weighing machine, can be continuously performed without using the manual labor.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, a bite roller 2 that bites the sheet-shaped SMC1, a feed roller 4 that feeds the sheet-shaped SMC1 into a short-side cutting portion 5 that cuts the short side direction of the sheet-shaped SMC1, a biting roller 2, and a feed roller. A slitter 3 for cutting in the longitudinal direction is provided between the slitter 4 and the slitter 4 to form a cutting device 6. The slitter 3 has a function of moving the blade up and down according to a cutting instruction in the longitudinal direction from the control device 13.

In addition, a conveyor 7 is provided next to the short cutting section 5,
The SMC piece 11 sent out is received, and the SMC piece 11 cut by the short-side cutting section 5 is sent to the drive conveyor 8 integrated with the weighing machine 9. A detection unit 10 is installed between the transport conveyor 7 and the drive conveyor 8 to measure the weight.
Forming twelve. When the tip of the SMC1 or the cut SMC piece 11 passes directly under the sensor of the detection device 10, it is detected and a weighing start signal is output. The SMC 1 or the cut SMC piece 11 advances on the drive conveyor 8 in the direction of the arrow, and when the end of the cut SMC piece 11 passes directly under the optical sensor of the detection section 10, the detection section 10 detects it and the drive conveyor The stop value of 8 and the measured value 3 to 5 seconds after the stop are read and a signal is output.

Furthermore, various other control functions such as automatic cutting by starting, operating and stopping the cutting device 6 and the weighing device 12 or automatically inputting cutting information such as SMC cutting dimensions, number of sheets, and presence / absence of longitudinal cutting. Control panel 14
A control device 13 with a built-in controller is provided.

In the above-described embodiment, the slitter 3 is provided as a cutting method in the longitudinal direction, but an ultrasonic cutter, a push cutter or a knife cutter can be used for this slitter. The same applies to the lateral direction.

Further, although the sensor for detection 10 is installed directly above the SMC piece 11, it is of course possible to install it not only directly above but also laterally, and the sensor 10 is not limited to above.

(Effects of the Invention) As described above, according to the present invention, conventionally, the pieces that have been previously cut by a machine or manually are combined and weighed, and a weight adjustment allowance is added thereto to prepare one set. By incorporating the automatic cutting and automatic weight adjustment system as described above, manual cutting or weight adjustment is eliminated and completely new SMC unmanned heat press molding that combines cutting and weighing. A production line can be built. In addition, since it can be made unmanned, the cost can be reduced more than ever.

[Brief description of drawings]

FIG. 1 is an automatic cutting and automatic weighing apparatus in hot press molding using SMC of the present invention, and FIG. 2 is a process drawing of hot press molding using SMC. Explanation of code 1 …… Sheet SMC, 2 …… Bite roller 3 …… Slitting machine, 4 …… Feed roller 5 …… Short cutting section, 6 …… Cutting device 7 …… Conveyor conveyor, 8 …… Drive conveyor 9 …… Weighing machine, 10 …… Detector 11 …… SMC piece, 12 …… Weighing device 13 …… Control device, 14 …… Operating panel

Claims (1)

[Claims] 1. A bite roller 2 for feeding a sheet-shaped SMC1 forward, a feed roller 4 for feeding a sheet-shaped SMC1 discharged from the bite roller 2 forward, and an SMC1 located between the biting roller 2 and the feed roller 4. A cutting device 6 including a cutting part 3 for cutting the longitudinal direction of the SMC 1 and a cutting part 5 in front of the feed roller 4 for cutting the SMC 1 in the lateral direction, and an SMC piece 11 cut by the cutting part 5 is conveyed. Transport conveyor 7,
A weighing machine 9 with a drive conveyor 8 for automatically weighing the SMC pieces 11 conveyed by the conveyor 7, and a detector 10 for confirming passage of the SMC pieces 11 between the transport conveyor 7 and the weigher 9 with the drive conveyor 8. And a braking device 13 for calculating the function of stopping the movement of the conveyer 7 and the weaving roller 2, the feed roller 4, the cutting devices 3 and 5, the drive conveyor 8, and the conveyor 7. The automatic cutting and automatic weighing device in hot press molding using SMC.