JPH0528536U - Powder and granular material feeder - Google Patents

Abstract

(57) [Summary] [Purpose] Despite its simple structure, it enables continuous and stable supply of powder and granules. [Structure] A vertical cylinder 2 is provided for receiving the powdered or granular material 1 to be fed, and a guide for rotating the powdery or granular material 1 from the center to the outside is provided below the vertical cylinder 2 to rotate at a constant speed around the axis of the vertical cylinder 2. A pedestal 3 having a surface 9 is provided on the lower end edge of the vertical cylinder 2 with a gap 6 along the guide surface 9 for allowing the granular material 1 to exit from the vertical cylinder 2, and the pedestal 3 rotating. A guide member 5 for guiding the powdery or granular material 1 moving out of the vertical cylinder 2 in the supply direction is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is used, for example, in the production of a sand mold for casting, in the case where it is necessary to supply a certain amount of powder and granular material such that a certain amount of sand is continuously supplied to compact the sand. The present invention relates to a powder and granular material supply device.

[0002]

[Prior Art]

 2. Description of the Related Art Conventionally, as this type of powder and granular material supply device, as shown in FIG. 2, a belt conveyor 4 having a claw-shaped bucket 4c on a belt is mounted on a powder or granular material 1 stored in a container 2 from above. Some of them were driven in such a state that the granular material 1 was scraped out by the capacity of the single bucket 4c to the upper end of the container.

[0003]

[Problems to be solved by the device]

 Since the above-mentioned powdery or granular material supply device is a mechanism for supplying powdery or granular material with a capacity of a bucket unit, continuous supply is difficult even though intermittent supply is possible. The remaining amount of powder in the container decreases as the supply time elapses, and when it reaches the lower limit, it is necessary to stop the belt conveyor and lift it from the container in order to supply new powder in the container. It is necessary to interrupt the supply of the powdery material at that time. Therefore, the conventional powder / granular material feeder has a drawback that the powder / granular material cannot be continuously and stably supplied.

For example, considering the case where such a powdery or granular material feeder is used for producing a sand mold for casting, when the supply of the casting sand is interrupted during the sand mold production, water is evaporated from the sand mold being produced. , The quality of the sand mold will be different from that of the sand mold to be continuously manufactured after the sand is replenished, and the adhesion will be deteriorated, causing damage at that part and adversely affecting the quality of the casting to be cast later. It will be.

Therefore, in view of the above-mentioned drawbacks, the present invention provides a powdery- or granular-material supplying device which has a simple structure and can continuously and stably supply powdery or granular materials.

[0006]

[Means for Solving the Problems]

 In order to achieve this object, a characteristic configuration of the present invention is to provide a vertical cylinder for receiving the powdered and granular material to be charged therein, and to rotate below the vertical cylinder around the axis of the vertical cylinder at a constant speed, and A pedestal having a guide surface that guides outward from the center, with respect to the lower end edge of the vertical cylinder, with a gap for powder particles coming out of the vertical cylinder along the guide surface, A guide member is provided on the rotating pedestal to guide the powder or granular material moving outside the vertical cylinder in the supply direction.

[0007]

[Action]

 According to the characteristic configuration of the present invention, the powder or granular material put into the vertical cylinder exits the vertical cylinder from the gap provided in the lower end edge of the vertical cylinder. That is, since the inlet and outlet of the granular material are separately provided in the vertical cylinder, the supply and the supply of the granular material can be performed in parallel, and the supply of the granular material is interrupted at the time of the supplement of the granular material. You don't have to. Therefore, it becomes possible to continuously supply the granular material.

Further, a pedestal having a guide surface below the vertical cylinder, which rotates at a constant speed around the axis of the vertical cylinder and guides the granular material outward from the center, is provided at the lower end of the vertical cylinder. The powder particles are provided along the guide surface with respect to the edge with a gap for exiting from the inside of the vertical cylinder, and are rotated. Since a guiding member is provided to guide the particles into the vertical cylinder, the particles will come into contact with the guide surface of the rotating pedestal and the weight of the particles will act in the guide direction along the guide surface. Due to the component force, it slides outward from the center of rotation, moves on the pedestal outside the vertical cylinder through the gap, and the frictional force acting between the pedestal and the pedestal and the force pushed by the subsequent powder and granular material Will stop when there is fishing. Furthermore, since the pedestal is rotating, the granular material that has stopped on the pedestal rotates together and contacts the guide member, and its rotational energy is converted in the direction along the guide member and is transferred from the top of the pedestal. Move in supply direction. In the empty pedestal, new particles move along the guide surface from inside the vertical cylinder. By repeating such an action, the granular material is sent out in the supply direction. Then, if the amount of the powder or granular material remaining in the vertical cylinder decreases, the powder or granular material can be continuously and stably supplied by replenishing the vertical cylinder with new powder or granular material.

[0009]

[Effect of the device]

 Therefore, according to the powder and granular material supply device of the present invention, it is possible to supply the powder and granular material in a continuous and stable state with a simple structure, such as in the case of a sand mold for casting. , The quality of the product using the supplied powder and granules can be stabilized, and the economic efficiency and quality can be improved.

[0010]

【Example】

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

FIG. 1A is a conceptual diagram showing a side surface of a powdery- or granular-material supplying device of an embodiment, and FIG. 1B is a conceptual diagram showing a plan-view of the powdery- or granular material supplying device. As can be seen in the figure, the powdery- or granular-material supplying device is provided with a vertical cylinder 2 for receiving the powdery or granular material 1 introduced by a material replenishing means 4a such as a belt conveyor, and below the vertical cylinder 2 around the axis of the vertical cylinder 2. The pedestal 3 is configured to rotate at a constant speed, and the guiding member 5 that guides the granular material 1 located on the upper surface of the pedestal 3 to the material supply side means 4b.

The vertical cylinder 2 has a cylindrical shape and is attached to a support member (not shown) on the fixed side.

The pedestal 3 below the vertical cylinder 2 is connected to the rotary drive device 7b via the speed reducer 7a on the lower surface side so as to rotate around the axis of the vertical cylinder 2, and has a ball at the upper end. It is rotatably supported at a plurality of points by a jack 8 which is equipped with a bearing 8a and whose lower end is fixed to the base surface and which is vertically expandable and contractible. Further, by vertically expanding and contracting the jack 8, a gap 6 for allowing the granular material 1 to come out of the vertical cylinder 2 can be provided between the lower end edge of the vertical cylinder 2 and the pedestal 3. Has been formed. On the other hand, a guide surface 9 inclined outward from the center is provided in the central portion of the upper surface of the pedestal 3.

Further, the guide member 5 is formed of a sheet metal, and the width direction is set up so that one end enters the gap 6 and the other end is on the material supply side means 4b side. The longitudinal direction is fixed so that the powdery or granular material 1 on the pedestal 3 abuts on the guide member 5 and moves to the material supply side means 4b side so as to intersect with the pedestal 3 at an acute angle. It is fixed to a side support member (not shown).

Next, the movement of the powdery or granular material 1 will be described. The material is supplied from the material replenishing means 4a into the vertical cylinder 2 in the direction of the first arrow 10 and is guided by the second arrow along the guide surface 9 and the upper surface of the pedestal 3. Move in direction 11. The granular material 1 moved on the receiving table 3 contacts the guiding member 5 by the rotation of the receiving table 3, is guided in the third arrow direction 12 and moves to the material supply side means 4b, and the fourth arrow direction 13 is reached. Move to.

[Other Embodiment] Another embodiment will be described below.

<1> The vertical cylinder 2 of the previous embodiment has been described as a fixed one, but the present invention is not limited to this, and it may be one that rotates about the axis, and furthermore, a wing-shaped protrusion is provided on the inner surface. If provided, the powdery particles 1 in the vertical cylinder 2 are vibrated by being agitated, so that the flowability is improved and the smooth supply of the powdery particles can be achieved. <2> The shape of the central portion of the pedestal 3 on which the guide surface 9 is formed is not limited to a conical shape, and may be, for example, a hemispherical shape. It only needs to be formed so that it can be guided to other people. Further, a guide member facing outward from the center may be provided on the guide surface 9. <3> One end of the guide member 5 is not limited to be provided along the upper surface of the pedestal 3, and may be provided, for example, so as to project like a wing into the vertical cylinder 2, as in the first alternative embodiment. As the cradle 3 is rotated, the powder or granular material 1 in the vertical cylinder 2 can be agitated. <4> Although the guiding member 5 of the previous embodiment is described as being fixed, the guiding member 5 is not limited to this. For example, the guiding member 5 may be relatively rotated around the rotation axis of the pedestal 3, and more powder particles can be obtained. It has the effect of promoting the supply of body 1.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a side surface and a plane surface of an embodiment.

FIG. 2 is a diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Powder / granule 2 Vertical cylinder 3 Cradle 5 Guide member 6 Gap 9 Guide surface

Claims (1)

[Scope of utility model registration request] 1. A powdery or granular material supply device for supplying a powdery or granular material (1) in a fixed quantity, wherein a vertical cylinder (2) for receiving the powdery or granular material (1) to be charged is provided, and below the vertical cylinder (2). The pedestal (3), which rotates at a constant speed around the axis of the tube (2) and has a guide surface (9) for guiding the granular material (1) outward from the center, is provided with the vertical tube (2). The pedestal (3) that rotates is provided with a gap (6) for allowing the granular material (1) to exit from the inside of the vertical cylinder (2) along the guide surface (9) with respect to the lower end edge of. ) A powdery- or granular-material supply device provided with a guide member (5) for guiding the powdery or granular material (1) moving out of the vertical cylinder (2) in the supply direction.