JP3226118B2 - Cutting and discharging mechanism for material on feed conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a calendering facility, and more particularly to a mechanism for cutting and discharging a material on a feed conveyor to a mixing roll of the calendering facility.

[0002]

2. Description of the Related Art In a calender plant for forming a plastic film or a rubber sheet, a plastic roll or a rubber material is prevented from being damaged before being supplied to the mixing roll of the calender.
Further, it is necessary to remove impurities such as metals mixed into the material in order to prevent the occurrence of defective products. For removing such impurities, a plastic material uses a strainer that filters the material in a molten state, but a rubber material cannot use a strainer because the rubber has a high viscosity and generates a large amount of heat during filtration. Therefore, in the conventional calender equipment for molding a rubber material, as shown in FIG. 2, a conveyor 3 for supplying the material 2 to the mixing roll 1, a metal detector 4 for detecting impurities, and a rotary for cutting out the material containing impurities. A metal cutting / discharging mechanism having a blade 5 and a discharge plate 6 for discharging the cut material is provided. The metal detector 4 detects impurities, and the rotary blade 5 is rotated to cut out the material 2. The material 2 cut out by being swung by the cylinder 7 was discharged to the outside of the mixing roll 1.

[0003]

However, in the above-described conventional mechanism for cutting and discharging the material on the feed conveyor, it is necessary to bring the rotary blade 5 into contact with the belt of the conveyor 3 in order to cut the rubber material with the rotary blade. However, the belt surface is easily damaged and the life of the belt is short. Further, there has been a problem that the belt is fuzzed due to damage to the surface of the belt, and fibers and fragments of the belt are mixed in the material. In addition, since the cut portion of the material is on the belt, the length from the mixing roll to the end of the cut material is long, and the end of the material may jump up and catch on a frame or the like outside the mixing roll. there were.

The present invention has been made to solve such a problem. In other words, an object of the present invention is to cut off a material on a feed conveyer that can reliably discharge a material containing impurities to the outside of the machine without damaging the belt, and without cutting the material out of the machine. It is to provide an ejection mechanism.

[0005]

According to the present invention, there is provided a feed conveyor for supplying a material to a mixing roll, a metal detector for detecting impurities, a rotary cutter for cutting a material containing impurities, and discharging a cut material. In the cutting and discharging mechanism of the material on the feed conveyor having a discharge plate, the rotary cutter is provided between the discharge side pulley and the mixing roll of the feed conveyor, and has a cutting blade protruding on the outer peripheral portion. A rotatable cutting roll having an auxiliary roll having an outer peripheral portion in contact with the cutting blade, and the material is guided to a mixing roll through a space between the cutting roll and the auxiliary roll. And a mechanism for cutting and discharging the material on the feed conveyor.

According to an embodiment of the present invention, the discharge plate includes:
A plurality of rotating rollers that roll in contact with the material are provided, and are provided so as to swing between a position where the material is supplied to the mixing roll and a position where the material is discharged out of the mixing roll.

[0007]

According to the configuration of the present invention, the rotary cutter is provided between the discharge pulley of the feed conveyor and the mixing roll, and has a rotatable cutting roll having a cutting blade protruding on the outer peripheral portion. And an auxiliary roll having an outer peripheral portion that comes into contact with the cutting blade, and further, the material is guided to a mixing roll through between the cutting roll and the auxiliary roll, so that the cutting blade contacts the belt of the conveyor. The belt surface is not damaged and the life of the belt is extended. In addition, since the belt surface is not damaged by the cutting blade, the belt is not fluffed and the material of the belt is not mixed with fibers or fragments. Further, since the cut portion of the material is provided between the discharge side pulley of the feed conveyor and the mixing roll, the length from the mixing roll to the end of the cut material is short,
Even if the end of the material is splashed, it does not reach the outside of the mixing roll and does not catch on the frame or the like outside the mixing roll.

Further, the auxiliary roll having an outer peripheral portion that comes into contact with the cutting blade of the cutting roll may be a simple cylindrical material, and is inexpensive and easy to replace as compared with a feed conveyor belt.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of a mechanism for cutting and discharging a material on a feed conveyor according to the present invention. In this figure, the material cutting and discharging mechanism is a mixing roll 11.
A feed conveyor 13 for supplying the material 12 to the apparatus, a metal detector 14 for detecting impurities such as metal, a rotary cutter 15 for cutting out a material containing impurities, and a discharge plate 16 for discharging the cut out material are provided. .

The mixing roll 11 is composed of two rotating rolls, and mixes and heats materials in a bank between the rolls. The material 12 is mainly a rubber material, but may be a plastic material, for example, vinyl chloride. The feed conveyor 13 has two pulleys 13
A belt conveyor comprising a, 13b and a belt 13c. The belt 13c is made of a cotton cloth, a rubber sheet, a nylon sheet, or the like. The feed conveyor 13 is preferably configured such that the unloading side pulley 13a swings in the horizontal direction so that the material 12 can be uniformly supplied onto the mixing roll 11. The metal detector 14 detects a metal, for example, iron or aluminum mixed in the material 12, and outputs an electric signal.

The rotary cutter 15 according to the present invention comprises:
It is provided between the discharge pulley 13 a of the feed conveyor 13 and the mixing roll 11. The rotary cutter 15 has a rotatable cutting roll 15a having a cutting blade 15c protruding from the outer peripheral portion, and an auxiliary roll 15b having an outer peripheral portion in contact with the cutting blade 15c. The cutting blade 15c is made of a hardened hard material, whose height is higher than the thickness of the material 12 and whose length is longer than the width of the material 12. Further, the cutting blade 15c is provided with a cutting roll 15a.
It is preferable to extend in a spiral shape slightly inclined with respect to the axial direction. Further, the shaft of the cutting roll 15a is connected to the shaft of the discharge side pulley 13a of the feed conveyor 13 through a clutch (not shown) via a chain, and the connection of this clutch allows the cutting roll 15a to be driven to rotate. . The auxiliary roll 15b is freely rotatable around its axis, and is located at a position where the outer peripheral portion is in contact with the cutting blade 15c. The auxiliary roll 15b is a cylindrical member made of, for example, mild steel, is not connected to another shaft or the like, and can be easily and independently replaced.

Normally, the cutting blade 15 of the cutting roll 15a
c is at the opposite position through which the material 12 passes. The material 12 is guided to the mixing roll 11 between the cutting roll 15a and the auxiliary roll 15b. Further, the material 12 is slightly spaced from the material 12 at the bladeless portion of the cutting roll 15a and the auxiliary roll 15b. With the above configuration, when the clutch is connected and the cutting roll 15a makes one rotation, the cutting blade 15c of the cutting roll 15a comes into contact with the outer peripheral portion of the auxiliary roll 15b, and the material 12 sandwiched therebetween can be cut.

Further, the discharge plate 16 according to the present invention comprises the material 12
And a plurality of rotating rollers 18 that roll in contact with the material 12 so that the material 12 can move smoothly along the discharge plate 16. The discharge plate 16 is swingable about a rotation axis (not shown).
Can be swung between a position for supplying the material 12 to the mixing roll 11 and a position (indicated by a two-dot chain line) for discharging the material 12 out of the mixing roll 11.

The mechanism for cutting and discharging the material on the feed conveyor according to the present invention operates as follows. First, when the metal detector 14 detects impurities in the material 12, the clutch is connected when the material 12 containing impurities comes to the cutting position, the cutting roll 15a is rotated once, and the cutting blade 15c of the cutting roll 15a is assisted. The material 12 is brought into contact with the outer peripheral portion of the roll 15b, and the material 12 sandwiched therebetween is cut. Next, after a certain period of time has elapsed by the timer, the material 12 is cut by rotating the cutting roll 15a once again. Thereby, the portion of the material 12 in which the impurities are mixed is cut out from the preceding and following materials. Next, the cylinder 17 is operated to swing the discharge plate 16 to a position where the material 12 is discharged out of the mixing roll 11 (indicated by a two-dot chain line), and the cut out material 12 is discharged out of the mixing roll 11. Then, the discharge plate 16 is returned by the cylinder 17 to return to the original position where the material 12 is supplied to the mixing roll 11.

As described above, according to the structure of the present invention, the rotary cutter 15 is provided between the discharge pulley 13a of the feed conveyor and the mixing roll 11, and has the cutting blade 15c protruding from the outer peripheral portion. Having a rotatable cutting roll 15a, and an auxiliary roll 15b having an outer peripheral portion in contact with the cutting blade 15c,
Further, since the material 12 is guided to the mixing roll through between the cutting roll and the auxiliary roll, the cutting blade does not contact the belt of the conveyor, the belt surface is not damaged, and the life of the belt is extended. In addition, since the belt surface is not damaged by the cutting blade, the belt is not fluffed and the material of the belt is not mixed with fibers or fragments. Further, since the cut portion of the material is provided between the discharge side pulley of the feed conveyor and the mixing roll, the length from the mixing roll to the end of the cut material is short,
Even if the end of the material is splashed, it does not reach the outside of the mixing roll and does not catch on the frame or the like outside the mixing roll.

Further, the auxiliary roll having an outer peripheral portion that comes into contact with the cutting blade of the cutting roll may be a simple cylindrical material, and is inexpensive and easy to replace as compared with a feed conveyor belt.

[0017]

Thus, according to the present invention, a material containing impurities can be reliably discharged to the outside of the machine, and the feed conveyor can be used without damaging the belt and without cutting the material out of the machine. A cutting and discharging mechanism for the above material can be provided.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a material cutting and discharging mechanism on a feed conveyor according to the present invention.

FIG. 2 is an overall configuration diagram of a conventional material cutting and discharging mechanism on a feed conveyor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mixing roll 2 Material 3 Conveyor 4 Metal detector 5 Rotating blade 6 Discharge plate 7 Cylinder 11 Mixing roll 12 Material 13 Feed conveyor 13a, 13b Pulley 13c Belt 14 Metal detector 15 Rotary cutter 15a Cutting roll 15b Auxiliary roll 16 Discharge plate 17 Cylinder 18 rotating roller

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B29C 43/22-43/24 B29C 43/32-43/34 B29C 31/04-31/10 B29B 11 / 00-13/10 B29D 7/00-7/01

Claims (2)

(57) [Claims] 1. A feed conveyor having a feed conveyor for supplying a material to a mixing roll, a metal detector for detecting impurities, a rotary cutter for cutting out a material containing impurities, and a discharge plate for discharging the cut out material. In the material cutting and discharging mechanism, the rotary cutter is provided between the discharge side pulley of the feed conveyor and the mixing roll,
And a rotatable cutting roll having a cutting blade protruding on the outer peripheral portion, and an auxiliary roll having an outer peripheral portion in contact with the cutting blade, and further, the material is mixed between the cutting roll and the auxiliary roll. A mechanism for cutting and discharging material on a feed conveyor, which is guided by a roll. 2. The discharge plate includes a plurality of rotating rollers that roll in contact with the material, and swings between a position where the material is supplied to the mixing roll and a position where the material is discharged out of the mixing roll. The mechanism for cutting and discharging a material on a feed conveyor according to claim 1, wherein the mechanism is movably provided.