JPS63200846A - Crusher for sheet-shaped molding material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a crushing apparatus for sheet-like molding material, which finely crushes a sheet-like molding material made of thermosetting resin and sends the finely crushed sheet-like molding material to the next process.

[Background technology] Conventionally, when crushing a sheet-like molding material, upper and lower rolls having protrusions or grooves are rotated, and the sheet-like molding material is supplied between the upper and lower rolls. Since the rolls are crushed by meshing with each other with almost no meshing gap, the blades of the upper and lower rolls are likely to wear out, and if the blades wear out, the rolls will not be crushed to a predetermined size or will become clogged.

*In the case of sheet-shaped molding materials that have been deformed into wavy shapes or hard sheet-shaped molding materials, it may not penetrate, and high pressure is applied to the sheet-shaped molding materials during crushing, resulting in a lot of dust (and a lot of noise). Moreover, it requires a large amount of power to drive.

[Object of the Invention] The present invention has been made in view of the above-mentioned points, and the object of the present invention is to provide a blade that is resistant to wear (and capable of crushing to a certain size) and that does not become clogged (and To provide a crushing device for sheet-like molding materials that can crush any sheet-like molding material by biting it into the material, and does not generate much dust or noise.

[Disclosure of the Invention] The crushing device for sheet-like molding material of the present invention comprises an upper roll 3 and a lower roll 4, each having a plurality of circumferential protrusions 1 and grooves 2 arranged in parallel in the upper and lower directions. At the same time, roll up and down 3
, 4 are made to correspond to each other, and the upper roll 3
is movable up and down, and the upper roll 3 is pressed against the lower roll 4 by the pressure means 5, and the closest meshing gap between the corresponding convex strips 1 and concave strips 2 of the upper roll 3 and lower roll 4 is formed into a sheet shape. This is characterized in that the thickness is approximately equal to the thickness of the molding material 6, and by configuring it as described above, the drawbacks of the conventional example are solved. That is, the upper roll 3 is made vertically movable and the upper roll 3 is pressed against the lower roll 4 by the pressure means 5, and the corresponding protrusions 1 and grooves 2 of the upper roll 3 and lower roll 4 are brought closest to each other. By making the meshing gap approximately equal to the thickness of the sheet-like molding material 6, when the upper and lower rolls 3 and 4 are driven to rotate and the sheet-like molding material 6 is passed between the upper and lower rolls 3 and 4 and crushed, a light load is not applied to the upper and lower rolls. roll 3,4
The blades of the blades do not wear out and can be crushed into a predetermined size, and they are not clogged, and the upper roll 3 can escape upwards, so that it can crush both wavy sheet-like molding material 6 and hard sheet-like molding material 6. It is now possible to crush the material by biting it in, and it has also become possible to reduce the generation of dust and noise.

The present invention will be explained in detail below with reference to Examples.

In a pair of mixed rolls 8, materials are introduced in batches, kneaded, and sent out as a sheet-like molding material 6. The sheet-like molding material 6 is composed mainly of a thermosetting resin such as 7-El 7-el and mixed with plus #l miscellaneous material. In this embodiment, the sheet-like molding material 6 has a thickness of 2.5 mm. Omm
, the width is 1300 m, and the length is 4000 m. The sheet-like molding material 6 sent out from the mixed roll 8 is received by a take-out conveyor 9, sent from the take-out conveyor 9 to a cooling conveyor 10, and conveyed while being cooled by the cooling conveyor 10. At the exit of the cooling conveyor 10, an upper roll 3 and a lower roll 4 are arranged to face each other vertically, and a gear 11 at the end of the upper roll 3 and a gear 12 at the end of the lower roll 4 are engaged with each other. The upper roll 3 and lower roll 4 can be driven synchronously. The upper and lower rolls 3 and 4 are provided with circumferential protrusions 1 and grooves 2 alternately in the wheel direction, and the protrusions 1 and grooves 2 of the upper and lower rolls 3 and 4 are made to correspond to each other. Between the upper roll 3 and the lower roll 4, the thickness of the sheet-like molding material 6 is approximately In this embodiment, since the thickness of the sheet-shaped molding material 6 is 2.0-1, the meshing gap is 2.51. In other words, in the case of this embodiment, as shown in FIG.
There is a distance of 2.5m between the cutting edge at both ends of the groove and the receiver at both ends of the groove 2.
A gap of - is created, and a gap of 2.51 is created between the outer circumferential surface of the protruding strip 1 and the outer circumferential surface of the grooved strip 2.

Further, the upper roll 3 is movable up and down, and bearings at both ends of the upper roll 3 are connected to pressure means 5 such as pressure cylinders.
Pressure is applied. A scraper 13 is provided on the outer periphery of the upper and lower rolls 3 and 4 to remove deposits.
．． At the outlet of 4, a crushing blade 14 made of a steel plate and driven to rotate is arranged.

A crushed product transport conveyor 15 is arranged below the crushing blades 14 to transport the shredded products in a direction perpendicular to the cooling conveyor 10.

The width of this shredded product conveyor 15 is 50 mm in this embodiment.
It is 01. When the sheet-shaped molding material 6 is supplied between the upper and lower rolls 3 and 4 that are rotationally driven from the cooling conveyor 15, the sheet-shaped molding material 6 bites between the upper and lower rolls 3 and 4, and Band-shaped (5 in this example)
This is cut into pieces (width 0 mm) by the crushing blade 14 in a direction perpendicular to the cutting direction by the upper and lower rolls 3 and 4.
In this embodiment, the pieces are cut into a length of 100 mm), and the shredded pieces (50×100 mm in this embodiment) are sent to the next process by the shredded product conveyor 15. When the sheet-shaped molding material 6 is cut by the upper and lower rolls 3 and 4, there is an engagement gap (2.5-1 in the case of this example) that is approximately equal to the thickness of the sheet-shaped molding material 6 between the upper and lower rolls 3 and 4. At the same time, the upper roll 3 is made vertically movable and pressurized by the pressure means 5.
Since the material can escape upward, there is not much load on the upper and lower rolls 3 and 4 from the sheet-form forming material 6, and the blades of the upper and lower rolls 3 and 4 are cut into a predetermined size with less wear. In addition, clogging is eliminated, and the generation of dust and noise is reduced (as well as the power required to drive the upper and lower rolls 3 and 4 is reduced, and even corrugated sheet-shaped molding material 6 or hard sheet-shaped molding material 6 can be cut by cutting). In addition, as mentioned above, there is a meshing gap between the upper and lower rolls 3 and 4, the upper roll 3 can move up and down, and the structure is simple, making it easy to clean when changing types. Batch-type molding material in sheet form 6
The upper F rolls 3 and 4 and the crushing blade 1
4 is driven at low speed to crush it, the process does not stagnate. Therefore, by driving at low speed, generation of dust and noise can be further suppressed.

In addition, in this embodiment, as shown in FIG. 3, the upper and lower rolls 3,
A notch 16 is provided on the outer periphery of the convex strip 1 of 4, and this notch 16 makes it easier for the sheet-like molding material 6 to bite into it. This notch! The blade edge of &16 is padded with Stellite steel to improve wear resistance.

In addition, in the case of this embodiment, as shown in FIG. 4, the crushing blades 14 are biased toward the upper roll 3, so that the tip of the crushing layer [14] is brought close to the outer periphery of the upper roll 3 (dimension C in FIG. 4 is 5s+ The crushing blade 14 rotates as shown by the arrow in FIG. 4, so that the crushing layer 41114 rotates smoothly and crushes without resistance. In other words, the crushing blade 14
When the lower roll 4 is biased to the side and crushed by rotating in the direction opposite to the arrow in Fig. 4, the lower roll 4 is a fixed roll that does not move up and down, so there is no escape, and a load is applied to the crushing blades 14, resulting in distortion. However, if it is as shown in FIG. 4, the upper roll 3 can escape upward, and no load is applied to the crushing blades 14, allowing them to rotate smoothly and crush.

[Effect of the Invention J As described above, the present invention allows the upper roll to move vertically, presses the upper roll against the lower roll using a pressure means, and connects the corresponding convex stripes of the upper roll and the lower roll with the Nitto. Close engagement gap of sheet-shaped molding material! Since the size is approximately equal, no load is applied when the upper and lower rolls are rotated to crush the sheet-shaped molding material through the upper and lower a-ru, and the blades of the upper and lower rolls do not wear out, resulting in crushing to the specified size. Moreover, the upper roll can escape upwards and can penetrate and crush both corrugated sheet-like molding material and hard sheet-like molding material, and it also prevents the generation of dust and noise. It is possible to reduce the amount of power required to drive the rotation.

[Brief explanation of the drawing]

Fig. 1 is a schematic sectional view of an embodiment of the present invention, Fig. 2 is a partially omitted front view of the upper and lower rolls of the above, Fig. 3 is a side view of the upper and lower rolls of the above, and Fig. 4 is a crushing blade of the above. 1 is a side view showing the effect of
+-) L-PI -11-A I-) "1
The manual pressure means is a sheet-like molding material.

Claims (1)

[Claims] [1] An upper roll and a lower roll each having a plurality of protrusions and grooves extending in the circumferential direction are arranged vertically in parallel, and the protrusions and grooves of the upper and lower rolls are made to correspond to each other. The rolls are movable up and down, and the upper roll is pressed against the lower roll by a pressure means, and the closest meshing gap between the corresponding convex and concave strips of the upper and lower rolls is determined by the thickness of the sheet-shaped molding material. A crushing device for sheet-like molding material, characterized in that it is made of equal parts.