JPH06344336A - Measuring type mixing device of granular resin raw material - Google Patents

Abstract

PURPOSE:To supply a raw material mixed so as to have desired coloring to a molding machine by classifying granular resin raw materials different in color by color to transfer the same to a measuring type mixing device from a raw material supply device. CONSTITUTION:A plurality of raw material supply hoppers 11a are provided to the upper part of an upper housing 30 and the outer periphery of the raw material stirring blade attached to the base part of the rotary shaft 3 rotated so as to support the load measuring device provided on the bottom plate 36 of a lower housing 30 receiving the granular raw materials different in color supplied from the respective hoppers according to a mixing ratio by the bearing of the central part of the rear surface of a receiving plate 1 is covered with a cover lid 5 and a raw material receiving tray 8a is provided on the upper surface or the cover lid 5. Left and right arm levers 34 are provided to an outer wall to be erected on the bottom plate 36 to be guided by a support and engaged with the cylinder 23 adjacent to the support 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a measurement type mixing apparatus for granular resin raw materials used in an extruder or an injection molding machine.

[0002]

2. Description of the Related Art Conventionally, a granular resin raw material used in an extruder or an injection molding machine is a granular resin raw material to be mixed, and after measuring each of various raw materials to be mixed,
In order to mix the raw materials, a stirring blade was placed in a mixing gutter provided in a lateral direction to mix the materials, and the mixture was supplied to a molding machine or the like. This method has the drawbacks that not only the mixing takes time, but also the mixing is incomplete, the shape becomes large, and a wide installation place is required, resulting in a high manufacturing cost.

[0003]

However, in the conventional method, since the measuring section and the mixing section are separately provided, a large space is required above the molding machine, and the mixing blades provided with the stirring blades in the lateral direction are required. With the method of adding the mixture to the gutter and mixing it, the granular resin material is not sufficiently mixed, color spots are likely to occur in the product, and it is not possible to easily switch the raw materials such as color change, A great deal of labor is required for cleaning at the time of replacement, and there is a problem of rabbit angle in ensuring the safety of workers.

[0004]

In view of the above-mentioned conventional drawbacks, the present invention provides a method for separating granular resin raw materials having different colors into granular materials while transferring them from a raw material supply device to a raw material metering mixing device. Resin is mixed in a desired color, that is, one or a plurality of load measuring devices 10 are provided on the bottom plate 36 of the housing 30, and the central portion of the lower surface of the receiving plate 1 placed on the load measuring devices 10. A bearing 2 is provided on the base 2, and a stirring blade 4 of the raw material is attached to the root of a rotary shaft 3 supported by the bearing 2. The outer periphery of the blade is covered with a cover 5, and a coupling 7 is formed inside the center of the upper wall surface of the cover 5.
a is provided and is linked to a motor 18 arranged above it, a saucer 8a is provided on the upper wall plate of the cover 5, and arm rods 34 are provided on the outer wall so as to project to the support plate 6 which is established on the support plate 1. In addition to guiding, a lot of a cylinder 23 adjacent to the support column 6 is engaged, and a raw material supply hopper 11a is provided on an upper part of an upper housing 37 located on an upper part of the housing 30, and a feeding cylinder connected to the lower part thereof. A raw material delivery pipe 14a is provided in the lower portion of 7b, a damper 15 is provided at the delivery opening, a suction type cleaning hose 17 is connected to the middle portion, and a raw material delivery screw 12a is provided inside the raw material delivery cylinder 7b. This is a measurement type mixing apparatus for granular resin raw materials, which is provided with a motor 13a at its lower end.

[0005]

Various kinds of raw materials, for example, white granular resin raw material 25, are used by using the granular resin raw material measuring-type mixing apparatus according to the present invention.
a, red granular resin raw material 25b, blue granular resin raw material 2
5c, a granular additive (Techron, etc.) raw material 25d is mixed at a mixing weight ratio of 10: 5: 2: 1, and if the mixed raw material is made, each hopper containing the above raw materials 25a, 25b, 25c, 25d Supply motors 13a, 13b, 13 engaged with the lower ends of 11a, 11b, 11c, 11d
When c and 13d rotate slowly at a rotation speed ratio of 10: 5: 2: 1, each of the supply motors 13a, 13b, 13c, 13d.
Screw 12a, 12 connected to the shaft of the
b, 12c, 12d are interlocked, and each hopper 11a, 11
b, 11c, 11d granular raw materials 25a, 25b, 25
c and 25d are the raw material discharge pipes 14a, 14b, 14c and 14
Push out to the outlet of d. And each hopper 11a, 11
b, 11c, 11d to raw material discharge pipes 14a, 14b, 1
The granular raw materials 25a, 25b, 25c, 25d extruded downwardly via 4c, 14d are 10: 5: 2: 1.
After it is discharged by, it falls on the pans 8a, 8b, 8c, 8d provided on the peripheral portion of the upper surface of the cover 5, and is accumulated inside the mixer 9, which is a load measuring device (load cell, etc.). 1
Since it is supported by 0, each granular raw material 25a,
When 25b, 25c and 25d reach a predetermined amount, the supply motors 13a, 13b, 13c and 13d stop rotating.

Alternatively, first, the raw material 25a is discharged from the hopper 11a to the mixer 9 through the raw material discharge pipe 14a at a weight ratio of 10, and then the raw material 25b is discharged from the hopper 11b through the raw material discharge pipe 14b at a weight ratio of 5 to the mixer 9. Discharged to
Next, the raw material 25c is fed from the hopper 11c to the raw material discharge pipe 14c.
Discharge more weight ratio 2 into the mixer, then hopper 1
From the material 1d, the material 25d is discharged from the material discharge pipe 14d in a weight ratio of 1 into the mixer. Then lift cylinder 21
Drive shaft 19 of the mixing motor 18
When the upper coupling 7a provided on the lower end of the drive shaft 19 is also connected to the lower coupling 7a provided on the mixer 9, the mixing motor 18 then rotates and is enclosed by the cover 5. The stirring blade 4 rotates, and each raw material 25
Mixing of a, 25b, 25c and 25d is started. After a lapse of a sufficient time for mixing, the mixing motor 18 continues to rotate, the mixer 9 is lifted upward, and the raw materials mixed by the gap 32 formed between the cover 5 and the receiving plate 1 are mixed. Is discharged to the outside by the centrifugal force of the stirring blade 4, but is discharged downward by the brim portion 31 provided on the outer periphery of the mixer 9, and the lower part of the granular fat raw material measurement-type mixing device according to the present invention. Is supplied to the molding machine installed in.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes a circular receiving plate on which the mixer 9 installed inside the housing 30 is mounted, and a bearing 2 is provided at the center.
Is mounted, and the rotating shaft 3 to which the stirring blade 4 is attached is pivotally supported. A guide 6 is established at the edge of the backing plate 1, and the cover 5
A hole 33 is provided in the center of the upper surface of the lower shaft so that the lower coupling 7a provided at the upper end of the rotary shaft 3 can be freely engaged and disengaged. A peripheral portion of the upper surface of the mixer 9 is provided with a pan 8a that is opened upward and receives the granular resin raw material 25a, and the lower end of the pan 8a is provided inside the mixer 9 with the resin raw material 2a.
It is opened so that 5a can be supplied. Further, since the guide 6 is established at the edge of the receiving plate 1, the cover 5 can slide up and down via the guide 6. The mixer 9 is surrounded by a cover 5 and a receiving plate 1, and the receiving plate 1 is supported by a load measuring device (load cell) 10 provided at the bottom of the housing 30. A brim edge 31 is provided to cover a gap generated when the plate 1 and the cover 5 are opened, and an edge 34 provided on the outer periphery of the upper portion of the cover 5 is pushed upward at the bottom of the housing to slide upward. A cylinder 23 is provided.

Above the mixer 9, a mixing motor 18 for rotating the stirring blades 4 in the mixer 9 is placed, and an extendable drive shaft 19 via a spline is installed in the mixing motor 1.
8 is connected to the shaft 8, an upper coupling 7a is provided at the lower end of the drive shaft 19, an elevating cylinder 21 is linked, and is expandable / contractible. Can be fitted with the lower coupling 7a installed in.

A granular resin raw material 25 is formed on the upper surface of the housing 30.
Hopper 11 for storing a, 25b, 25c, 25d
a, 11b, 11c, 11d are placed on each hopper 1
At the lower ends of 1a, 11b, 11c, and 11d, a transparent acrylic resin cylindrical delivery cylinder 7b is installed in the vertical direction, and a prismatic raw material discharge pipe 14a is installed horizontally below the delivery cylinder 7b. Extrusion screws 12a, 12b, 12c, 12d for pushing out the granular resin raw materials 25a, 25b, 25c, 25d in the delivery cylinder 7b are arranged, and the extrusion screws 12a, 12b, 12c, 12d are arranged.
A supply motor 13 is installed below the raw material discharge pipe 14 at the lower end of the d-axis. Further, an impeller 22 is further installed between the lower end of the extrusion screw and the supply motors 13a, 13b, 13c, 13d to form the extrusion screw 1 in the raw material discharge pipe 14.
The granular resin raw materials 25a, 25b, 25c, 25 extruded by the extrusion screws 12a, 12b, 12c, 12d are provided at the lower ends of the 2a, 12b, 12c, 12d.
The extrusion efficiency of d can be improved.

Raw material discharge pipes 14a, 14b, 14c, 14
A damper type discharge port 15 is provided at the tip of d, and a suction type cleaning hose 27 (not shown) connected to a blower is provided in the middle of the raw material discharge pipes 14a, 14b, 14c, 14d. ing. That is, the supply motor 1
When the 3a, 13b, 13c, 13d are activated, the extrusion screws 12a, 12 attached to the upper end of the shaft
b, 12c, 12d and the impeller 22 rotate, and granular resin raw materials 25a, 25b, 25c, 25d are fed out.
b, the raw material discharge pipes 14a, 14b, 14c installed at the lower end of the feeding cylinder 7b while being pushed downward.
14d is discharged from the discharge port 15 through the inside of 14d, and the pans 8a, 8b, 8c, 8 of the cover 5 of the mixer 9 installed below.
After falling to d, it accumulates inside the mixer 9. Then, the electric motor lifting cylinder 21 pushes down the drive shaft 19 of the mixing motor 18 placed above the mixer 9 and fits above the rotary shaft 3.

When the mixing motor 18 rotates, the stirring blade 4 also rotates and the resin raw materials 25a, 2 accumulated inside the mixer 9
Mix 5b, 25c and 25d. After an arbitrary mixing time sufficient for mixing, the mixing motor 18 and the stirring blade 4
While rotating, the discharge cylinder 23 goes up,
When the upper lid 5 also goes up, centrifugal force causes a granular resin raw material 2
5a, 25b, 25c and 25d are blown outwards, hit the edge 31 of the mixer 9 which is covered on the outside, and are repelled downward, and are thrown into a molding machine (not shown). Incidentally, the hoppers 11a, 11b, 11c, 11d and the hopper upper lid 3
Since the guide rail 28 is provided between the hoppers 11, the hopper upper lid 38 can freely slide, so that the hopper 11
The insides of a, 11b, 11c and 11d can be freely cleaned.

[0012]

Since the present invention is constructed as described above, it has the following excellent features. That is, since the measuring unit and the mixing unit are integrated, it has an excellent feature that the shape can be made smaller than that of the conventional mixing device. Moreover, since the raw material is discharged, the raw material discharge pipes 14a, 14 are provided.
Since b, 14c and 14d are provided laterally, the amount of raw material discharged can be finely adjusted. In addition, the raw material discharge pipe 14
The damper 15 provided at a, 14b, 14c and 14d can easily clean the inside of the hoppers 11a, 11b, 11c and 11d and the vicinity of the extrusion screw 12 by the operation of the suction type cleaning hose 17.
Since the mixed raw materials can be discharged all at once by the centrifugal force of the stirring blade 4, the mixed raw materials can be fed into the molding machine.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a weighing-type mixing device according to the present invention.

FIG. 2 is a partially cutaway front view of the metering mixer according to the present invention during operation.

FIG. 3 is a partially cutaway side view of the metering type mixing device according to the present invention at the time of discharging.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Support plate 2 Bearing 3 Rotating shaft 4 Stirring blade 5 Cover lid 6 Strut 7a Coupling 7b Feeding cylinder 8a, 8b, 8c, 8d Saucepan 9 Mixer 10 Load measuring device 11a, 11b, 11c, 11d Hopper 12a, 12b, 12c, 12d Delivery screw 13a, 13b, 13c, 13d Motor 14a, 14b, 14c, 14d Raw material discharge pipe 15 Damper 17 Cleaning hose 18 Motor 19 Drive shaft 21 Lifting cylinder 22 Impeller 23 Cylinder 25a, 25b, 25c, 25d Granular resin raw material 28 Guide Rail 30 Housing 31 Collar Edge 33 Hole 34 Arm Rod 35 Opening 36 Bottom Plate 37 Upper Housing 38 Hopper Upper Lid

Claims (2)

[Claims] 1. The load measuring device 10 is mounted on a bottom plate 36 of a housing 30.
A bearing 2 is provided at the center of the lower surface of the receiving plate 1 having one or a plurality of openings, and having an opening around the entire outer peripheral edge of the load measuring device 10, and a rotating shaft supported by the bearing 2. A stirring blade 4 for the raw material is attached to the root portion of 3, and the outer periphery thereof is covered with a cover 5, and a coupling 7 is provided inside the center of the upper wall surface of the cover 5.
a is provided and is linked to a motor 18 arranged above it, a saucer 8a is provided on the upper wall plate of the cover 5, and arm rods 34 are provided on the outer wall so as to project to the support plate 6 which is established on the support plate 1. A metering type mixing device for granular resin raw materials which is guided and engaged with a lot of cylinders 23 adjacent to the support columns 6. 2. The upper housing 3 located above the housing 30.
7, a raw material supply hopper 11a is provided, and a lower portion of a feeding cylinder 7b connected to the lower portion thereof is provided with a raw material feed pipe 14a in a lateral direction, a damper 15 is provided at a delivery port, and a suction type cleaning hose 17 is connected to an intermediate portion. 2. The granular resin raw material supply device according to claim 1, wherein a raw material feeding screw 12a is provided inside the raw material feeding cylinder 7b, and a motor 13a is linked to the lower end thereof.