JP2002307439A - Raw material mixing preventing device for raw material weighing and mixing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a raw material weighing and mixing apparatus not leaving a raw material at the time of previous production in a raw material hopper and each feed part when the raw material at the time of next production is exchanged in spite of a simple structure. SOLUTION: The raw material weighing and mixing apparatus consists of raw material hoppers 11 and 12, the raw material discharge pipe 37 arranged to the raw material hopper 11, a feed part 15 capable of being easily attached and detached, the screw feeder 14 arranged in the feed part to feed the raw material, the motor 16 being the drive source of the screw feeder 14 and a weighing part 13 for weighing the raw material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for mixing and mixing powdery and granular raw materials, and more particularly to a raw material hopper for charging a plurality of types of powdery and granular materials into a measuring section. It relates to each feed section for transporting the raw material.

[Prior art and its problems]

In the molding of plastic resins, a plurality of raw materials in the form of powder and granules are mixed, and the raw materials are used as various kinds of feedstocks to form products having desired characteristics by a molding method. In such a case, as shown in FIG. 1, each raw material hopper 11 for charging each granular material, each feed unit 15 for transporting each granular material, and weighing them to a predetermined material. A measuring unit 13 and a mixing device for mixing the measuring unit 13 are required.

However, when exchanging the granular material in each raw material hopper, as shown in FIG. 4, as a working process, the granular material is transferred from the raw material hopper 11 'to the raw material hopper. Open the discharge pipe 37 'and pull it out into a bag or the like. Go get the vacuum cleaner 41. The outlet 42 is connected to make it usable. With the nozzle 43 of the vacuum cleaner up the platform 44. The vacuum cleaner 41 sucks the raw material 18 of the residual powder granular material in the feed section of the feed section 15 ′. Visually check the remaining blot. Get off the platform 44. The dust inside the vacuum cleaner 41 is removed. Clean the vacuum cleaner 41. This is a very laborious operation, and even if the vacuum cleaner 41 is used, there is a limit to the work at high altitudes and the reach of the nozzle 43 of the vacuum cleaner. Of the feed section 15 '
Since several kg or more of the residual powder granular material 18 in the feed portion remains, the residual powder granular material 18 in the feed portion before switching is mixed at the next production, and the starting raw material for the next production is the production raw material before switching. However, there is a problem that the starting material must be discarded because of mixing.

The present invention has been made in view of the above problems, and has a simple structure. However, at the time of exchanging the raw materials, the raw material granular material 18 in the lower part of each raw material hopper 11 'and each feed part 15' in the feed part is replaced. To provide a raw material weighing / mixing apparatus capable of easily discharging all the raw materials.

[0005]

To achieve the above object, the gist of the present invention is to provide a raw material measuring and mixing apparatus for mixing a plurality of powdery raw materials in a raw material hopper 11 to a measuring unit 13.
The feed unit 15 for transporting the raw material is attached to and detached from the raw material measuring and mixing apparatus.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. As shown in FIG. 1, in a measuring and mixing apparatus for mixing a plurality of granular materials, a feed unit 15 for transporting each granular material from a raw material hopper 11 to a measuring unit 13 can be attached and detached. Raw material mixing equipment.

In the present invention, the powdery material is a powdery material.
It may be in the form of pellets or pulverized material used as a recycled material.

The method of charging the raw material into the raw material hopper 11 is as follows.
Automatic transportation such as pneumatic transportation or vacuum transportation, or raw materials are directly input by hand. The former includes a main raw material or a material frequently used. The latter includes materials used infrequently, with a small amount of addition, materials being exchanged frequently, and materials used in trial production.

In the present invention, the feed portion 15 is a portion that conveys the powdery material from the raw material hopper 11 to the measuring portion 13. That is, the feed section 15 includes the raw material conveying means and the lower part of the raw material hopper that cannot be discharged from the discharge pipe 37 'of the conventional raw material hopper 15'. Specifically, the screw feeder 14 or the like is preferable as the raw material conveying means. Further, since the motor 16 and the like serving as the driving source of the raw material conveying means are heavy, it is preferable that the motor 16 and the like can be easily separated from the feed unit 15 by the bracket 36 and connected.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 3, the metering and mixing apparatus of the embodiment includes a raw material hopper 12, a raw material hopper 11, a feed unit 15, a measuring unit 13, a screw feeder 14 disposed in the feed unit 15, and a screw feeder. 14
And a discharge pipe 37 of the raw material hopper for removing the raw material in the raw material hopper 11.

In the raw material hopper 12, a fixed amount of pellets are transported to a measuring section to a predetermined value by a pneumatic transportation of the raw material pellets for a predetermined time.

In the raw material hopper 11, raw material pellets are put into the raw material hopper 11 manually from a paper bag. The raw material in the raw material hopper 11 is supplied to a screw feeder 14 in a feed unit 15 and a motor 16 serving as a driving source.
Is sent to the weighing unit 13 until the pellet weight reaches a predetermined value. Thereafter, the raw materials having a predetermined weight are mixed by a mixer.

The feed section 15, which is the gist of the present invention, discharges from a discharge pipe 37 of the raw material hopper 11 provided in the raw material hopper 11 as shown in FIGS.
6 is rotated in the horizontal direction so that the feed portion 15 can be pulled out, the feed portion 15 is pulled out, and the powdery material 18 remaining in the feed portion of the feed portion 15 is discharged to the reusable raw material bag 17.

As shown in FIG. 2, the motor 16 is detached by disposing a vertical support 21 at the end of the motor 16 so that the motor 16 can be rotated in the horizontal direction and the feed portion 15 can be pulled out.

Motor 16 and screw feeder 14
U-shaped brackets 36 are respectively provided at the joints of, and have a shape that can be easily removed. Further, the screw feeder 14 is manually rotated with a copper bar or the like so that the bracket 36 is engaged with the joint, so that the bracket 36 is engaged.

As shown in FIG. 3, a flange 34 is provided at the lower end of the raw material hopper 11, and a buffer rubber 31 is disposed on the flange 34. As shown in FIG.

At the end of the flange 34, a slide rail 32 is provided in the insertion direction of the feed portion 15, and a flange 35 provided above the feed portion 15 is provided so as to be insertable. I have.

The feed unit 15 includes a patchin tablet 3.
3 is attached to the side where the slide rail 32 is provided. By tightening the patch lock 33, the raw material hopper 11
The feed portion 15 is pulled up in the vertical direction so that a gap is not formed between the flange 34 at the lower end of the feed portion 15 and the flange 35 at the upper portion of the feed portion 15 via the buffer rubber 31. When removing, the patch lock 33 is removed and pulled out along the slide rail 32.

[0020]

As described above, by using the metering / mixing device of the present invention in which the feed section 15 is detachable, the raw material granular material 18 in the feed section before the switching of the raw material can be removed at the time of the next production. Since all can be discharged, there is no material loss at the beginning of the next production. Since the cleaning work and the work at a high place by the worker are eliminated, the work efficiency is greatly increased. Rubber cushion 31 between raw material hopper 11 and feed section 15
The raw material hopper 1
The gap between the feed unit 1 and the feed unit 15 is eliminated, and leakage of the raw material is eliminated. The raw material granular material 18 in the feed section is stored in the reusable raw material bag 1.
7, it can be reused. And so on.

[0021]

[Brief description of the drawings]

FIG. 1 is a simplified diagram of a raw material mixing apparatus.

FIG. 2 is an explanatory view of removing a feed unit.

FIG. 3 is an explanatory diagram of a fixing method of a feed unit.

FIG. 4 is a work diagram of conventional material exchange.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Raw material hopper 12 Raw material hopper 13 Measuring part 14 Screw feeder 15 Feed part 16 Motor 17 Reuse raw material bag 18 Residual powder granular raw material in a feed part 21 Post 31 Buffer rubber 32 Slide rail 33 Patch lock 34 Raw material hopper side flange 35 Feeder Part side flange 36 Bracket 41 Vacuum cleaner 42 Outlet of vacuum cleaner 43 Nozzle of vacuum cleaner 44 Step board 11 'Material hopper 15' Feed unit 37 'Material hopper discharge pipe

Claims (2)

[Claims] 1. A raw material measuring and mixing apparatus for mixing a plurality of powdery raw materials, wherein a feed unit (15) for conveying from a raw material hopper (11) to a measuring unit (13) can be attached and detached. apparatus. 2. A raw material hopper (11), a raw material discharge pipe (37) provided in the raw material hopper (11), a feed part (15) which can be easily attached and detached, and a raw material hopper (11) provided in the feed part. Feeder (14) for transporting the raw material, a motor (16) that is a driving source of the screw feeder (14), and a measuring unit (1) for measuring the raw material.
3) A raw material measuring and mixing apparatus comprising: