JPH0750362Y2 - Device for connecting sheet material in SMC cutting machine - Google Patents

Description

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

(Prior Art) As shown in FIGS. 2 and 2, an SMC sheet material (hereinafter, simply referred to as a sheet material) 1a has a thickness of 3 mm, a width of 1 m and a length of 50 m and is wound around a core tube 2 to form an SMC sheet. A roll body (hereinafter, simply referred to as a roll body) 3 is formed, and this roll body 3 is, for example, 24
What is aged is handled. Since the sheet material 1a has a strong adhesive property, the upper film 4 and the lower film 5 made of polyethylene or the like are applied to the upper surface and the lower surface of the sheet material 1a so as to wind the sheet material 1a so that the sheet materials 1a do not adhere to each other. , Simply called a sheet)
Make up one. In the FRP forming step, the end portion of the roll body 3 is unrolled to cut the sheet material 1a into a predetermined length, the sheet materials 1a having the predetermined length are stacked, and pressure and heat curing are performed by a pressing machine or the like. There is. The cutting process of the sheet material 1a is performed by an SMC cutting machine 11 as shown in FIG. This SMC cutting machine 11, a cradle 12 that sequentially receives and supports the preceding roll body 3A and the following roll body 3B,
For each roll body 3A, 3B, apply the sheet material 1a to the upper film 4
And the lower film 5 and the pinch roll 13 for feeding, the cutting tool 14 arranged in front of the pinch roll 13, and the upper winding for winding the upper film 4 separated on the feeding side of the pinch roll 13. The roll 15 and a lower winding roll 16 for winding the lower film 5 are mainly constituted.

The pinch roll 13 has a lower side as a drive shaft and an upper side as a driven shaft. A drive device such as a motor is connected to the drive shaft. The driven shaft is connected to the encoder and rolls 3
The integrated value of the rotation speed of the driven shaft that feeds the sheet material 1 from A and 3B is converted into the feeding length.

A commercially available triangular cutter or the like is used for the cutting tool 14, and is attached to, for example, a holder 14a, and the holder 14a is installed in the width direction above the sheet material 1a. A guide beam (not shown)
It is possible to drive along.

When the sheet material 1 wound around the preceding roll body 3A disappears by repeating the cutting process for cutting the sheet material 1a into predetermined lengths, the succeeding roll body 3B is moved to the front end of the pedestal 12. Sheet material 1a from this roll body 3B manually.
The setting was pulled out to the vicinity of the cutting tool 14 each time. This setting is for sheet material 1
Of the upper film 4 and the lower film 5 after being fed to the pinch roll 13 and the upper film 4 and the lower film 5 are wound around the upper take-up roll 15 and the lower take-up roll 16; Remove the side film 5 to remove the sheet material 1a
Was directly sent to the pinch roll 13.

(Problems to be solved by the invention) However, the A procedure requires a lot of labor and time to redo the setting each time from the beginning, and the operation rate of the cutting process decreases. Further, the procedure B has the same problem as the procedure A because the resin adheres to the pinch rolls 13 and therefore it is not easy to clean the sheet material 1a when the color of the sheet material 1a is changed.

In view of such conventional circumstances, the present invention is a cutting machine for SMC which is capable of quickly connecting the succeeding sheet 1 and preventing the pinch roll from becoming dirty when the sheet 1 fed out from the roll body is exhausted. It is an object of the present invention to provide an instrument for connecting sheet materials in.

(Means for Solving the Problem) The sheet material connecting device in the SMC cutting machine of the present invention includes a pedestal that sequentially receives and supports the preceding SMC roll body and the subsequent SMC roll body, and each SMC roll body. Pinch roll for feeding the SMC sheet material together with the upper film and the lower film for each, a cutting tool arranged in front of this pinch roll, and an upper side for winding the upper film peeled on the feeding side of the pinch roll. SM with a take-up roll and a lower take-up roll for taking up the lower film
In the cutting machine for C, S between the pedestal and the pinch roll
A device for connecting the MC sheet material is provided, and the connecting device for the SMC sheet material is provided at the connection table provided at the lower position of the movement path of the SMC sheet material and at the upper position of the connection table. It consists of a detection mechanism and an adhesive tape that connects the upper film and the lower film that are applied to the SMC sheet material.

(Operation) When the end portion of the sheet delivered from the preceding roll body passes the detection position of the detection mechanism, the pinch roll is temporarily stopped by the detection signal.

The upper film and the lower film can be easily adhered with the adhesive tape by manually unwinding the leading edge of the sheet of the succeeding roll to the vicinity of the end of the sheet of the preceding roll that is stopped on the connection table. You can connect.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. The direction in this description is that the left is front and the right is rear in FIG. The configurations of the rolls 3A and 3B around which the sheet 1 is wound and the SMC cutting machine 11 have been described in the conventional example, and therefore, the same parts are denoted by the same reference numerals and description thereof is omitted.

Between the pedestal 12 and the pinch rolls 13, 13, there is provided a sheet material connecting device 21 as shown in FIG.
This sheet material connecting device 21 is provided with a movement path R of the sheet 1.
And a detection mechanism 23 and an adhesive tape (not shown in FIG. 1) provided above the connection table 22.

The connection table 22 is an upper film 4A and a lower film at the end of the sheet material 1A that is fed from the preceding roll body 3A.
5A and the upper film 4B and the lower film 5B at the leading end of the sheet material 1B fed from the succeeding roll body 3B are temporarily placed and connected to each other without being peeled off. For example, a synthetic resin material, a metal material, wood, or the like is used to form the rear end portion into an arc surface (see FIG. 1) or an inclined surface that easily guides the sheet material 1.

The detection mechanism 23 is for detecting the end portion of the sheet material 1 fed from the preceding roll body 3A, and is arranged so as to correspond to substantially the center portion of the connection table 22 using, for example, a photoelectric sensor. ing. The detection signal of the detection mechanism 23 is generated by detecting the difference between the reflectance of the surface of the sheet material 1 and the reflectance of the connection table 22.

Next, the operation of the sheet material connecting device 21 and the procedure for connecting the sheet material will be described.

When the end portion of the sheet material 1 fed from the preceding roll body 3A passes the detection position D of the detection mechanism 23, the detection mechanism 23 detects the change in reflectance.

This detection signal causes the pinch rolls 13, 13 to pause.

Next, after removing the core tube 2 of the preceding roll body 3A and moving the succeeding roll body 3B onto the front end portion of the pedestal 12, the leading end portion of the sheet material 1B is moved from this roll body 3B to the upper film 4B and the upper film 4B. Connection table 22 without peeling off the lower film 5B
Manually extend to the center of.

Subsequently, the upper film 4A and the lower film 5A of the preceding sheet material 1A and the upper film 4B and the lower film 5B of the succeeding sheet material 1B are attached to the adhesive tape 2 as shown in FIG.
4,25 are connected in the width direction (direction orthogonal to the paper surface).

After that, when the pinch rolls 13 and 13 are restarted, the upper films 4A and 4B and the lower films 5A and 5B are continuously wound on the upper winding roll 15 and the lower winding roll 16, respectively.
Further, the sheet materials 1A, 1B are also continuously fed to the cutting tool 14 side, and therefore the pinch rolls 13, 13 are
Between the upper film 4A, 4B and the lower film 5A,
Since 5B is interposed, there is no risk of being soiled with the resin of the sheet materials 1A and 1B.

(Effect of the Invention) According to the device for connecting sheet materials in the cutting machine for SMC of the present invention, the preceding sheet material and the following sheet material are adhesive tapes without the upper film and the lower film peeling from the sheet material. Since it is easy to connect with the sheet material, the work of connecting the sheet material when replacing the roll body can be performed very quickly, and it is possible to prevent the resin of the sheet material from sticking to the surface of the pinch roll. Also, there is an advantage that cleaning of pinch rolls at the time of color change is not required, workability of sheet material connection work is improved, and operation rate of sheet material cutting processing is significantly improved.

[Brief description of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a schematic view showing a connecting device for a sheet material in a cutting machine for SMC, Fig. 2 is a perspective view of a roll body in which the sheet material is wound, and Fig. 3 FIG. 4 is an enlarged view of a portion III of FIG. 2, and FIG. 4 is a view for explaining a sheet material connecting procedure. 1 ... SMC sheet 1a, 1A, 1B ... SMC sheet material 3,3A, 3B ... roll body 4,4A, 4B ... upper film 5,5A, 5B ... lower film 11 ... cutting machine for SMC, 12 ... stand 13 … Pinch roll, 14… Cutting tool 15… Upper take-up roll, 16… Lower take-up roll 21… Sheet material connection device 22… Connection table 23… Detection mechanism R… Movement path

Claims (1)

[Scope of utility model registration request] 1. A pedestal for sequentially receiving and supporting the preceding SMC roll body and the following SMC roll body, and S for each SMC roll body.
A pinch roll for feeding the MC sheet material together with the upper film and the lower film, a cutting tool arranged in front of this pinch roll, and an upper winding for winding the upper film peeled off on the feeding side of the pinch roll. In the SMC cutting machine equipped with a roll and a lower winding roll for winding the lower film, a device for connecting the SMC sheet material is provided between the pedestal and the pinch roll.
Connects the connection table provided at the lower position of the moving path of the MC sheet material, the detection mechanism provided at the upper position of the connection table, and the upper film and the lower film applied to the SMC sheet material. An instrument for connecting sheet materials in a cutting machine for SMC, which comprises an adhesive tape