JPH0418428A - Device of peeling coating film of smc sheet material - Google Patents

Abstract

PURPOSE:To obtain the title device capable of smoothly peeling coating films of SMC sheet material, wherein one-way clutch built-in feed rolls to vertically supply a SMC sheet material is laid at a top part and rolls of peeling coating films of SMC sheet material and take-off rolls are arranged below the feed rolls. CONSTITUTION:One-way clutch built-in feed rolls 3 and 3' to vertically supply a SMC sheet material 1 is laid at a top part and coating films 2 and 2' of the SMC sheet material 1, peeling rolls 5 and 5' of and take-off rolls 4 and 4' are successively arranged at given intervals below the feed rolls, the SMC sheet material 1 is continuously pulled by rotary motion of the take-off rolls 4 and 4'. When slip occurs between the take-off rolls 4 and 4' and the SMC sheet material 1 and take-off speed is reduced less than set take-off speed, the SMC sheet material 1 is sent by the rotary movement of the feed rolls 3 and 3' and the coating films 2 and 2' are released by the peeling rolls 5 and 5' and wound by winding rolls 6 and 6'.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for peeling off a film coated on both sides of an SMC (sheet molding compound) or prepreg mat.

[Conventional technology]

SMC sheet 1~ material (hereinafter simply referred to as SMC) is usually coated with a film on both sides, and it is necessary to peel off the film before use.

Conventionally, a device as schematically shown in FIG. 2 has been used to peel off this film.

That is, while the SMCI is sent out in a hanging state by the feed roll 13.13', a draw ratio is applied between it and the take-up roll 14.14' provided on the drying side.
The film 2.2' is stripped off by a stripping roll 15.15' located between the two rolls, and then rolled 16.
16'.

[Problem to be solved by the invention]

In such conventional devices, the feed roll 13.1
In order to maintain tension between the rolls 14 and 14' and the take-up rolls 14 and 14', a draw is applied between both rolls, but if this is applied too much, an accident in which the SMC breaks may easily occur.

Furthermore, in reality, it is difficult to maintain a constant amount of withdrawals.

In other words, due to changes in the adhesiveness of SMC, the take-up roll 14
．． If 14' slips due to contact with the SMC, the amount of take-up will decrease, and the amount of feed by the feed roll will increase, causing slack in the SMC between both rolls, making it difficult to peel off the film, and causing the SMC to slip. Accidents may occur where the main unit gets caught in the feed roll or stripping roll.
There was a problem in that the stripping could not be performed smoothly.

An object of the present invention is to solve these conventional problems and provide an apparatus that can smoothly peel off the film.

[Means to solve the problem]

In order to achieve the above object, the SMC sheet material coating film stripping device of the present invention is provided with feed rolls (3, 3') equipped with a one-way clutch that feeds the SMC sheet material (1) in a suspended manner at the upper end, Below it are a coating film (2, 2') stripping roll (5, 5') of the SMC sheet material (1) and an SMC sheet material take-up roll (4,
4') are sequentially arranged at predetermined intervals, and normally the SMC sheet material (1) is taken up by the rotational movement of the take-up rolls (4, 4'), and the SMC sheet material (1) is
If slip occurs between the MC sheet material (1) and the take-up speed is lower than the set take-up speed, the feed rolls (3, 3')
This is characterized in that the SMC sheet material (1) is fed out by the rotational movement of the SMC sheet material (1).

When peeling off the coating film using the device of the present invention,
In order to pull the SMC between the take-off roll (4, 4') and the feed roll (3, 3') with a built-in one-way clutch and maintain tension, the take-off roll (4, 4') and feed roll (3, 3') are If the roll diameter is the same as that of the roll (3, 3'), the take-up roll (4, 4')
) rotation speed is set somewhat earlier.

[Action of the invention]

With the structure described above, the SMC passes through the feed roll, hangs downward, and is taken up by the take-up roll, while the film is peeled off by the peel-off roll along the way.

Under normal conditions, the SMC sheet material is taken up by the rotational movement of the take-up roll, and the feed roll that is in contact with this SMC sheet material is also freely rotated by the SMC sheet material.

While stripping is progressing in this way, the take-up roll slips due to changes in the adhesiveness of the SMC surface, and when the SMC take-up speed decreases to below the set take-up speed, the rotational movement of the feed roll changes. Since the SMC is sent out, the slip on the take-up roll surface is eliminated and the SMC is returned to its original state again, and the SMC is taken up by the take-up roll, and the take-up speed is also restored.

Therefore, SMC between the feed roll and take-up roll
When a certain amount of SMC is sent out without causing any sagging, it is used for the next operation such as cutting.

〔Example〕

FIG. 1 is a side view showing the basic structure of the present invention. S
MC12,2' is a film coated on both sides.

Reference numeral 3.3' denotes a feed roll with a built-in one-way clutch that pinches the SMC and sends it out by hanging downward, and although it is not shown, it is rotated by a drive device (not shown) at a rotation speed lower than that of the take-up roll.

Reference numeral 4.4' denotes a take-up roll, which is rotated by a drive device in the direction of the arrow to take off the SMC.

For example, when the diameters of both rolls are the same, the shaft rotational speed ratio of the take-up rolls 4, 4' and the feed roll 3°3' can be set to about 5:4 in order to give a draw to the SMC. preferable.

Reference numeral 5.5' denotes a film stripping roll provided between the two rolls facing each other on both sides of the SMC, and the film stripped off by the stripping rolls 5, 5' is transferred to take-up rolls 6, 6'. Each is wound up.

〔Effect of the invention〕

Since a feed roll with a built-in one-way clutch is used, it is possible to reliably prevent the SMC from breaking due to the draw, and the hanging SMC is always maintained at an appropriate tension state, preventing sagging and preventing malfunctions. Since regular entrainment is prevented, the film can be peeled off smoothly.

Furthermore, since the mechanism is simple, it is easy to modify a conventional device to the device of the present invention, and the effects thereof are extremely large.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the configuration of the device of the present invention, and FIG. 2 is a schematic diagram of a conventional device. 1... SMC12, 2'... Covering film, 3
．． 3'...Feed roll, 4.4'...Take-off roll, 5.5'... Stripping roll

Claims (1)

[Claims] Feed rolls (3, 3') with a built-in one-way clutch are provided at the upper end to feed the SMC sheet material (1) in a suspended manner, and below the feed rolls (3, 3') are provided a covering film (2) for the SMC sheet material (1).
, 2') Stripping rolls (5, 5') and SMC sheet material take-off rolls (4, 4') are sequentially arranged at predetermined intervals, and the SMC sheet material is normally removed by the rotational movement of the take-off rolls (4, 4'). When the sheet material (1) is taken up and slip occurs between the take-up rolls (4, 4') and the SMC sheet material (1), and the take-up speed is lower than the set take-up speed,
An SM characterized in that the SMC sheet material (1) is fed out by the rotational movement of feed rolls (3, 3').
C sheet material coating film peeling device.