JPS63149111A - Extrusion molding machine - 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] [Industrial Application Field] The present invention is directed to the extremely efficient molding of resin pellets, solid fuels, etc., such as solid fuels made of thermoplastic plastic waste and solid particles such as coal ash. This relates to an extrusion molding device that can perform

[Prior Art] An extrusion molding machine using a single or twin screw is known as a solid particle molding device. In this single-screw or twin-screw extrusion molding machine, one or two screws are inserted into a barrel, and the screws are rotated to knead and extrude raw materials.

A die having a large number of extrusion openings is provided at the tip of the barrel, and the kneaded raw materials are continuously extruded from the openings of the die. Further, the kneaded material extruded from the mold is cut into a predetermined length by a separately installed cutting machine to obtain a molded product.

[Problems to be Solved by the Invention] Conventionally, there have been devices that cut the extrudate with a blade that rotates on the surface of the mold, but this was driven by a separate electric motor. Therefore, an electric reducer must be installed near the mold.
It was getting in the way. It also consumed extra power.

[Means for Solving the Problems] The extrusion molding machine of the present invention has an extrusion material cutting blade that rotates along the outer surface of the mold attached to the tip of the screw.

[Function] In the extrusion molding machine of the present invention, the material extruded from the opening of the mold is immediately cut into a predetermined length, so the required length can be cut without installing a cutting device separate from the extrusion molding machine. It is possible to produce molded products that are cut into shapes.

[Examples] Hereinafter, the present invention will be described in more detail with reference to examples shown in the drawings.

FIG. 1 is a side sectional view showing the configuration of an extrusion molding machine according to an embodiment of the present invention, and FIG. 2 is a front view thereof.

Reference numeral 10 is a barrel with two screws 1 inside it.
2 is inserted. The barrel 10 has a base plate 1
4, a material supply port 16 is opened on the upper surface on the base end side, and a mold (dice) 18 is attached to the distal end surface with bolts 19.

A short shaft member 20 is fixed to the tip of the screw 12. In this embodiment, a recessed hole 12a is formed in the distal end surface of the screw 12, the base end of the shaft member 2o is inserted into the recessed hole 12a, and the flange 20a fixed to the shaft member 2o is inserted into the recessed hole 12a. It is fixed to the base surface of the recessed hole 12 with a bolt 22. This shaft member 2° is rotatably supported by the die 18 via a sleeve 5o.

A cutting blade 24 is fixed to this shaft member 2o. The cutting blade 24 includes a boss portion 28 that is fitted into the shaft member 2° through a key 26 and fixed with a locking nut 27, and an arm 30 that extends radially from the boss portion 28. A cutting edge 32 is fixed to the arm 30, and the cutting edge 32 is rotated along the outside of the extrusion opening 34 of the die 18.

In this embodiment, the opening 34 is shaped like a straight tube on the inlet side and gradually expands in diameter on the outlet side, and is configured to reduce the resistance of the material to be extruded through the opening and to perform smooth extrusion. There is.

A gear device 38 is connected to the base end side of the screw 12. This gear device 38 includes a casing 40 installed on the base plate 14, and a drive shaft 46 that passes through the casing 40 and is pivotally supported via bearings 42, 44.
, a gear 48 is fixedly attached to the drive shaft 46, the distal end of the drive shaft 46 is connected to the screw 12, and the base end is connected to the electric motor side (the path shown in the figure).

Note that two drive shafts 46 are installed in parallel, each with a screw 1.
Gears 48 that are connected to the drive shafts 2 and fixed to each drive shaft 46 mesh with each other, and when one shaft 46 is driven, the other shaft 46 is driven.

In the extrusion molding machine having such a configuration, the raw material inputted from the supply port 16 is kneaded and compressed by the screw 12 while moving forward inside the barrel 10 and extruded through the die opening 34. Then, it is cut off by the cutting edge 32 of the cutting blade 24 rotating along the outer surface of the die 32. In this case, the extrusion speed, arm 30 (cutting edge 32)
Since the length of the cut material is determined depending on the number of pieces installed, etc., the cut length can be changed by adjusting these factors.

As described above, according to the extrusion molding machine of the present invention, a molding material cut into a required length can be obtained without providing a separate extrusion molding machine as a cutting device.

The illustrated extrusion molding machine is installed horizontally, and the material supply port 16 is provided with a hopper (the illustrated path). However, the extrusion molding machine of the present invention can also be used as a so-called vertical extrusion molding machine in which the screw axis direction is the vertical direction or a direction including the vertical direction. In this case, the chute s may be connected to the supply port 16 as shown in the figure. Furthermore, although the above embodiment relates to a twin-screw type extrusion molding machine,
The present invention can also be applied to a single screw type extrusion molding machine.

[Effects] As described above, according to the extrusion molding machine of the present invention, a molded product cut to a predetermined length can be manufactured without providing a cutting device, a drive device for the cutting device, etc. separately from the extrusion molding machine. This brings about the effects of reducing equipment costs, narrowing the installation space, and reducing power costs.

The extrusion molding machine of the present invention can be widely used in various fields, such as a resin pellet molding machine, a solid fuel molding machine using waste, an animal feed molding machine, a food molding machine, etc.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of an extrusion molding machine according to an embodiment of the present invention;
FIG. 2 is a front view of the same. IO...Barrel, 12...Screw, 1
8... Mold (dice), 24... Cutting blade, 30...
・Arm, 32...Blade tip.

Claims (1)

[Claims] (1) In an extrusion molding machine having a barrel provided with a material supply port on the proximal end side, an extrusion mold attached to the tip end, and a screw inserted into the barrel, the shaft of the screw An extrusion molding machine characterized in that a tip portion of the extrusion molding member is made to protrude from the mold, and a cutting blade for cutting the extruded material is attached to the tip portion so as to be rotatable along the outer surface of the mold.