JPH07102511B2 - Continuous cutting device for sheet molding compounds - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a continuous cutting device for sheet molding compounds.

[0002]

2. Description of the Related Art At present, a sheet molding, which is a long sheet-shaped molding material, is formed by impregnating a glass fiber mat with a polyester resin composition between two release films and then increasing the viscosity. Cut a compound (hereinafter referred to as "SMC") into a predetermined length,
It is widely used in various fields to use the cut piece as a raw material for a high-strength, large-area molded product by compression molding. Thus, when this long SMC is used as a raw material for compression molding, it is necessary to cut it into a length dimension that matches the dimension of the desired molded product. Conventionally, for this purpose, a long SM
Generally, a guillotine cutter is used to cut C in the width direction by using C as a sheet having a desired dimension in the longitudinal direction. However, this guillotine cutter has a high cutting efficiency. It is said that it is difficult to cut with low efficiency and high efficiency because of its mechanism.

Further, it is efficient to cut the SMC after removing the release films on both sides thereof.
However, since the body of the SMC after peeling off the release film is soft and has high adhesiveness, when the SMC in such a state is cut by a guillotine cutter or the like, the SMC cuts it. Since it sometimes sticks to the machine part, especially the guillotine blade part, it is one of the causes that make it difficult to increase the cutting efficiency.

[0004]

Therefore, according to the present invention, S
MC, in particular, the main body of the sheet molding compound (SMC), which is soft and has high adhesiveness after peeling off the release film on both sides, is continuously made into a predetermined length dimension with high efficiency. It is an object of the invention to obtain a cutting device that can perform the cutting.

[0005]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention has two traveling belts that are substantially in the same plane, and two conveyor belts traveling in the same direction are arranged in series. In a continuous cutting device for a sheet molding compound in which a cutting unit is provided between belts, the cutting unit is movable and rotatable so as to cross a running direction at right angles with a blade receiving guide that can be lowered with respect to the running surface. It has a circular blade.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings showing an embodiment thereof. First, as shown in FIG. 1, in the apparatus according to the present invention, two conveyor belts 1 and 2 are arranged in series in the longitudinal direction so that their upper running surfaces are substantially in the same horizontal plane. A certain space is left between them. Note that these conveyor belts 1 and 2 have a width corresponding to the width of the SMC 30 to be cut, and are designed to run in the same direction as indicated by arrow X, and should be cut. SMC30
1 is placed on the conveyor belt 1 from the end of the left hand as seen in FIG. 1, passes over the space between the conveyor belts 1 and 2, and is transferred onto the conveyor belt 2. . The length of the conveyor belt 1 may be an appropriate length, but the length of the conveyor belt 2 is assumed to be larger than the maximum cutting length of the SMC 30.

Further, in the space between the conveyor belts 1 and 2, as shown in FIG. 1, a cutting unit 3 is arranged so as to traverse the conveyor belts 1 and 2. The cutting unit 3, a rectangular vertical has a hollow space frame of a long dimension in the width direction of the conveyor belt 1, 2 3 ₀
The inner contour of the hollow space is larger than the outer contour of the conveyor belts 1 and 2, so that the inside of the hollow space is moved from the conveyor belt 1 to the conveyor belt 2 to the SMC 30. Are allowed to pass freely. Further, as shown in FIG. 2, the lower frame 3 ₁ of the frame body 3 _0, the frame 3 ₀ is widely formed a width slightly symmetrically with respect to the vertical center line, along each of its sides Each one rail 4 is attached so as to extend in parallel over the entire length of the lower frame 3 ₁ .

Further, on these rails 4, a horizontal plate-shaped traverse guide unit 5 having a plane contour or a rectangular shape is provided.
However, each groove portion having a cross section corresponding to the rail 4 formed on the lower surface of the groove is slidably engaged with the rail 4 so that it is slidably mounted in the horizontal direction. On the traverse guide unit 5, a blade support base 6 is upright and fixed, and at the top end portion thereof,
A circular blade 7 is rotatably supported. In addition, a spring for pressing the circular blade 7 is built in the blade support base 6 in order to make the pressure of the circular blade 7 constant (not shown). The circular blade 7, the top portion of the periphery, in the upper frame 3 ₂ (embodiment of the frame 3 _0, the upper frame 3
₂ has a U-shaped cross section, and is designed to enhance rigidity in the vertical direction) is horizontally attached to the lower surface, and has a rectangular cross section, for example, nylon, Teflon, etc. The lower surface of the circular blade receiving guide 8 made from is contacted under a certain pressure. In addition, the traverse guide unit 5 includes a traverse rodless air cylinder 9 horizontally installed between the traverse guide unit 5 and the lower frame 3 _1.
Is operated so that the vehicle travels horizontally on the rail 4.

In this way, when the traverse guide unit 5 travels on the rail 4 by the operation of the traverse rodless air cylinder 9, the blade support base 6 integrated with the traverse guide unit 5 is also moved in the same direction. As a result, the circular blade 7 rotatably supported on the top end portion of the circular blade 7 contacts the lower surface of the circular blade receiving guide 8 attached to the upper frame 3 ₁ under pressure. Therefore, it will be rotated.

Furthermore, frame 3 ₀ of the cutting unit 3, a central portion of the lower surface of the lower frame 3 _1, by the operation of the installed units increased air cylinder 10 between the base of the device, perpendicularly It is said to be able to move up and down. Further, in order to guide the vertical up and down motion in the vicinity of each end of the lower frame 3 _1, unit elevating guide 11 of the appropriate format, the lower frame 3 _1, between the base, known It is installed in a style.

One embodiment of the device of the present invention has the above-mentioned structure. Next, the operation will be described. First,
The cutting unit 3 has a pneumatic cylinder 1 for raising the unit.
As shown in (I) of FIG. 3 by the operation of 0, the tool support base 6 is moved to the one end of the lower frame 3 ₁ by the operation of the traverse rodless air cylinder 9. Part, for example, at the left end, as seen in FIG. In this state, the conveyor belts 1 and 2, the hollow space of the frame 3 ₀ of the cutting unit 3, is to be located substantially at the center. SMC to be disconnected in this state
As shown in FIGS. 1 and 2, 30 is mounted on the conveyor belt 1 traveling in the direction of the arrow X from the left end in FIG. hand,
It passes through the cutting unit 3, is transferred onto the conveyor belt 2 which is also traveling in the direction of arrow X, and travels on it. Then, when it is detected by a sensor (not shown) that the tip portion has traveled on the conveyor belt 2 from the position of the cutting unit 3 to a predetermined length dimension, both conveyor belts 1, 2 Driving is stopped.

Therefore, as shown in FIG. 3 (II), the cutting unit 3 is lowered by the operation of the unit raising air cylinder 10 and the circular blade receiving guide 8 attached to the lower surface of the upper frame 3 ₂ thereof. The lower surface is the conveyor belt 1, 2.
From the top surface of the SMC 30 in the space between, reach a few mm around.

Here, the blade support base 6 is replaced by the blade support base 6 shown in FIG.
When the traverse rodless air cylinder 9 is actuated from the position shown in FIG. 3 to move in the Z direction to the right as seen in FIG. 3 (III), the top end portion of the blade support base 6 is moved. circular blade 7 which is rotatably journalled in the top portion of the periphery, by being in contact with the bottom of the circle-shaped blade receiving guide 8 and pressing, rotates in the direction of arrow R. Thus, the circular blade 7 to the rotation, in between the upper frame 3 _2, by crushing, carried out the cutting of SMC30, the cutting is completed, as viewed in the figure, in the position indicated by the chain line to the right end portion, Stop.

Next, the cutting unit 3 is connected to the (I
As shown in V), the cutting unit 3 is lifted in the direction of the arrow Y by the operation of the unit lifting air cylinder 10.
Is returned to the position shown in FIG. In this case, the disconnect
Was SMC30 is, because of its tackiness, when attached to a circular <br/> shaped blade receiving guide 8 against the own weight, in the vicinity of the upper frame 3 _second cutting unit 3, to the side walls along, advance, guide bar pair in the apparatus - by placing established the 12, cutting portions of the SMC30 is, the arrow Y of the cutting unit 3
Since the guide bar 12 hits the guide bar 12 in the middle of the upward movement in the direction of, the cutting portion of the SMC 30 is separated from the cutting unit 3 by these guide bars 12 and can surely drop toward the conveyor belts 1 and 2. .

When the SMC 30 is cut by the cutting unit 3 in this way, the conveyor belts 1 and 2 are driven again in the X direction. This allows the conveyor belt 2
The SMC 30 cut into a predetermined length on the conveyor is conveyed toward the other end, and the SM on the conveyor belt 1 is conveyed.
The C30 is transferred onto the conveyor belt 2, stopping both conveyor belts 1 and 2 when it has been transferred a predetermined length dimension, ending one cycle of cutting. After that, the previous operation is repeated, but during this time, the SMC 30 cut into a predetermined size on the conveyor belt 2 is carried out by the conveyor belt 2.

In the above description, the blade support base 6 is driven by the traverse rodless air cylinder 9 on the lower frame 3 ₁ of the cutting unit 3 along the rail 4, but instead of this. Moreover, it is of course possible that the blade support 6 can be driven by an electric motor. In addition, on the traveling surface of the conveyor belts 1 and 2,
It is desirable that a coating such as a fluorine resin is provided and placed so as to prevent adhesion with the SMC 30.

As described above, according to the device of the present invention, the SMC
30 is the circular blade receiving guide 8 even when the release film on both sides thereof is peeled off and the soft and highly adhesive state is obtained.
That is, to form a blade receiving guide on the lower surface of the frame 3 _0,
Due to its own weight, it can be held on the two conveyor belts 1 and 2 and can be cut without hindrance via the cutting unit 3 arranged in the space between them, and this cutting operation is , The traveling speed of the conveyor belts 1 and 2, the vertical movement time of the cutting unit 3 placed in the interval between them, the traverse speed of the blade support base 6, etc. are appropriately selected, and their operation is appropriately performed. By precisely synchronizing by any means, it is possible to minimize the cutting cycle time and to operate continuously, and
For example, as compared with the case of cutting with a guillotine cutter, the cutting efficiency can be significantly increased.

Next, the results of the cutting test carried out by the prototype of the device of the present invention will be described. In this test, the driving speed of the conveyor belts 1 and 2 was set to 10 m / min,
Was cut SMC30 width 1,200mm to the length of 1,000mm, for this, 6 sec the drive time of the conveyor belts 1, 2, 3sec the lifting time of the frame 3 ₀ of the cutting unit 3, tool support base It was confirmed that the SMC 30 can be continuously cut in a cutting cycle of 11 seconds in total with the crossing time of 6 being 2 seconds.

[0019]

The present invention apparatus, since those having a structure and operation as described above, SMC, in particular, the state of peeling off the release film of the double-sided, soft, met high tack SMC However, when the cutting unit rises,
It will be peeled off due to heavy weight, and it can cut continuously to a predetermined length in the shortest cycle time without any trouble, so its cutting efficiency can be significantly improved compared to that of conventional guillotine cutting machines etc. It can be done.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a device of the present invention.

FIG. 2 is a front view thereof.

FIG. 3 is an explanatory view showing an operation process of the apparatus shown in FIGS.

[Explanation of symbols]

1, 2 Conveyor belt 3 Cutting unit 3 ₀ Frame of cutting unit 3 ₁ Its lower frame 3 ₂ Similarly upper frame 4 Rail 5 Traverse guide unit 6 Tool support 7 Circular blade 8 Circular blade receiving guide 9 Traverse rodless air cylinder 10 Air cylinder for lifting the cutting unit 11 Cutting unit lifting guide.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display area // B29K 105: 16

Claims (7)

[Claims] 1. The traveling surfaces are substantially in the same plane and in the same direction.
Two conveyor belts running in
With a cutting unit between both conveyor belts
Odor for continuous cutting machine for molding compound
The cutting unit can be lowered with respect to the running surface.
Movable so that it crosses the blade receiving guide at right angles to the traveling direction
A continuous cutting device for sheet molding compounds, which is equipped with a circular blade that is rotatable . 2. A frame in which the circular blade has the blade receiving guide.
It is supported by the body, and this frame is equipped with means that can move up and down.
The continuous cutting device for a sheet molding compound according to claim 1, wherein Wherein said frame body, characterized in that it has a large internal contour than the outer contour of the conveyor belt 請
A continuous cutting device for a sheet molding compound according to claim 2 . 4. A blade for supporting the circular blade on the frame body.
An object support base is placed, and this blade support support
A means is provided to move it across the direction at a right angle.
The continuous cutting device for a sheet molding compound according to claim 3, wherein 5. The circular blade is the top portion of the tool support.
5. The shaft is rotatably supported by the shaft.
Continuous cutting device for the described sheet molding compound. 6. The blade receiving guide is formed on the lower surface of the upper frame of the frame body.
The continuous cutting device for a sheet molding compound according to claim 2, which is formed . 7. The conveyor belt running surface is a sheet molding compound for continuous cutting apparatus according to any one of 6 claim 1, characterized in that it is coated with a fluororesin.