JPH07185488A - Bonded powder removing apparatus - Google Patents

Abstract

PURPOSE:To remove a bonded powder from the wall surface to which charged dust is bonded of a member by providing an exhaust means exhausting the interior of a housing from the bottom part of the internal space formed by the housing capable of forming high speed air streams along the wall surface thereof. CONSTITUTION:When a housing 4 is advanced by driving an air cylinder 6, a pair of the side plates and upper surface plate of the housing 4 come into close contact with a support plate 3. Subsequently, when the internal closed space of the housing 4 is exhausted from the suction opening part 25 of an exhaust duct 5 by driving a strong exhaust fan, air flows in the housing 4 from the air passing port formed to the upper surface plate of the housing 4 to pass along the inner wall of a hopper 13 and the inner wall of a quantitative container 14 as high speed air streams to be discharged from a lower opening part 16. The powder bonded to the inner walls of both of the hopper 13 and the quantitative container 14 is carried by the high speed air streams thus formed to be removed from the inner walls and the removed powder is discharged from an exhaust duct 5 along with air streams.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing adhered powder, and more specifically, a mechanism for quantifying powder introduced from a hopper with a metering container and then introducing a fixed amount of powder into a receiver. The present invention relates to an adhering powder removing device that can effectively prevent the powder contained in a container from being contaminated by the powder collected last time.

[0002]

2. Description of the Related Art Conventionally, in various powder manufacturing processes such as toners, polymers, and food powders such as wheat flour, the powders to be manufactured have a particle size distribution, for example. It is necessary to measure the molecular weight of the polymer, which is powder, the content of foreign substances present in the powder, and the like. Usually, the powder is collected from a powder distribution mother tube in a powder manufacturing process, and the powder is further adjusted to a predetermined amount of powder by a quantitative container before being provided to various measuring means or measuring methods.

In this case, it is a big problem that the powder has a charging property. That is, whatever powder is charged, the powder adheres to, for example, a hopper, a weighing container, or peripheral equipment thereof. As a result, the powder collected for the various kinds of analysis or measurement is mixed with the powder collected last time in the container for storing the powder.
If the powder collected this time is provided for various analysis or measurement while the powder collected previously is mixed, an error will occur in the analysis or measurement of the powder collected this time, and accurate analysis or measurement can be performed. Disappear.

The inventor of the present invention has devised an automatic powder sampling device capable of sampling a fixed amount of powder and storing a fixed amount of powder in a receiver.

The automatic powder collecting device has a hopper having an upper opening and a lower opening, and a space sufficient for disposing a scraping member from the lower opening just below the lower opening of the hopper. It has a fixed quantity container having an upper opening and a lower opening that can be opened and closed, and a receiver that can be arranged immediately below the lower opening, which is provided and arranged.
In this automatic powder collecting device, powder is put into the hopper through the upper opening of the hopper. In this case, the powder can be charged manually, but normally, a robot arm that holds the container containing the powder conveys the container to the upper opening of the hopper, and then the upper part of the hopper. The powder in the container is put into the hopper by inverting the container above the opening. The powder put into the hopper drops into the metering container through the lower opening of the hopper. In the usual case, since the amount of powder that is larger than the inner volume of the fixed quantity container is dropped, the powder is piled up at the upper opening of the fixed quantity container. Therefore, the powder is scraped off by the scraping means at the upper opening of the quantitative container. By this scraping operation, the volume of the powder is adjusted to a volume equal to the internal volume of the fixed quantity container. Next, the quantitative powder in the quantitative container is dropped into the receiver by opening the lower opening of the quantitative container.

In this way, it is possible to automatically collect a fixed amount of powder in the receiver. However, in this automatic powder collecting device, the powder is dropped from the hopper into the fixed amount container, and the fixed amount is fixed. Even if the powder is dropped from the container to the receiver, the electrostatically charged powder adheres to the inner wall of the hopper and the inner wall of the metering container, and in some cases, the powder adheres to the outer periphery of the metering container. There is a problem that the powder to be sampled is contaminated with the powder to be sampled last time when the adhered powder is mixed with the powder to be sampled next time.

The present invention has been completed based on the above circumstances.

That is, an object of the present invention is to provide an adhering powder removing device capable of removing powder from the wall surface of a member having a wall surface to which charged powder adheres.

Another object of the present invention is to provide an adhering powder removing device capable of efficiently removing the powder adhering to the inner wall surface of the member for dropping the powder contained therein. .

[0010]

The invention according to claim 1 for solving the above-mentioned problems is capable of accommodating a member having a wall surface to which powder adheres, and forming a high-speed air stream along the wall surface. An adhering powder removing device comprising: a possible casing and an exhaust unit capable of exhausting the inside of the casing from a bottom of an internal space formed by the casing. In the invention described, a hopper having an upper opening portion and a lower opening portion, and immediately below the lower opening portion of the hopper, a sufficient distance for disposing a scraping member from the lower opening portion is provided. A casing capable of accommodating therein a fixed quantity container having an upper opening and a lower opening that can be opened and closed, and a housing capable of forming a high-speed airflow along the inner wall of the hopper and the inner wall of the fixed quantity container; Formed by An adhering powder removing device comprising: an exhaust unit capable of exhausting the inside of the housing from the bottom of the space. The invention according to claim 3 is provided with an upper opening and a lower opening. And a hopper having an upper opening and a lower opening that can be opened and closed, which is arranged immediately below the lower opening with a sufficient distance to dispose the scraping member from the lower opening. A vertical support plate for supporting the container, a bottom face provided below the metering container with a sufficient space for placing a receiver, the support plate and the A housing capable of forming an internal space capable of accommodating the hopper and the fixed quantity container together with the bottom surface,
An adhering powder removing device, comprising: an exhaust duct having a suction opening opening to the bottom surface; and the housing according to claim 4 above the upper opening of the hopper. The adhering powder removing device according to claim 2 or 3, wherein an airflow passage opening is formed in the upper surface plate located thereover.
The invention according to claim 5 is the adhering powder removing device according to claim 2 or 3, wherein the casing has an air flow ejecting device for ejecting an air flow toward the upper opening of the hopper. According to a sixth aspect of the present invention, a hopper provided with an upper opening and a lower opening is arranged directly below the lower opening with a sufficient spacing for disposing the scraping member from the lower opening. An exhaust duct having a suction opening, which is arranged at a predetermined interval immediately below the lower opening of a fixed quantity container having an upper opening and an openable lower opening. High-speed suction airflow formation movable from the retracted position between the exhaust duct and the metering container, and having a lower opening corresponding to the suction opening of the exhaust duct and an upper opening corresponding to the lower opening. To be equipped with means An adhering powder removing device, characterized in that the invention according to claim 7 is provided with a suction opening portion which is arranged immediately below a member having a wall surface to which the powder adheres, with a predetermined interval. An exhaust duct, a lower opening corresponding to the suction opening of the exhaust duct and an upper opening corresponding to the lower opening, the opening being movable from the retracted position to the exhaust duct and the metering container. And a high-speed suction air flow forming means.

[0011]

In the apparatus for removing adhered powder according to claim 1, a member having a wall surface to which charged powder adheres is housed in the housing, and the inside of the housing is forcibly forced from the bottom of the housing by the exhaust means. When exhausted, a high-speed air stream is formed along the wall surface, and the powder adhered to the wall surface is guided by the high-speed air stream, and the powder is removed from the wall surface.

In the adhering powder removing device according to the second aspect, the hopper and the fixed amount container are housed in the housing, and the housing is forcibly exhausted by the exhaust means. In this case, as described in claim 4, when the airflow passage is provided in the upper surface plate corresponding to the upper opening of the hopper in the housing,
Air outside the housing is sucked into the housing from the airflow passage opening,
The sucked air becomes a high-speed airflow and passes through the inner wall of the hopper and the inner wall of the metering container. By the passage of this high-speed air flow, the powder adhered to the inner wall is forcibly entrained in the high-speed air flow, and the powder is removed from the inner wall.

Further, when the housing has an airflow ejecting device at a position corresponding to the upper opening of the hopper, the airflow ejected from the airflow ejecting device and the exhaust means. By the air flow generated by forcibly exhausting the gas in the housing, a high-speed air flow is generated on the inner wall of the hopper and the inner wall of the metering container, and the powder adhered to these inner walls is entrained in this high-speed air flow, The powder is removed from the inner wall.

In the adhering powder removing device according to the third aspect, the support plate, the bottom surface, and the housing form an internal space for housing the hopper and the fixed quantity container. A hopper and a fixed quantity container are housed in an internal space formed by the support plate, the bottom surface and the housing. The exhaust duct forcibly exhausts the interior space. When the upper surface plate of the housing is provided with an airflow passage, the same operation as described above is performed. When the housing is provided with an airflow ejection device, the same operation as described above is performed. The powder adhering to the inner wall and the inner wall of the metering container is entrained in the high-speed airflow to remove the powder from these inner walls.

The housing of the apparatus for removing adhered powder according to any one of claims 1 to 5 can itself accommodate a member having a wall surface to which the powder adheres or a hopper and a fixed quantity container, or a support plate and a bottom surface. A structure that can accommodate a member having a wall surface to which powder adheres or a hopper and a fixed quantity container by collaborating with, as well as dropping and containing the powder from the hopper into the fixed quantity container, The housing is temporarily retracted when it is loaded into the receiver through the lower opening of the fixed quantity container, and when it is necessary to remove the powder, it is moved from the retracted position and the hopper and fixed quantity container are housed inside. It has a structure that allows it. The position at which the housing is retracted may be an appropriate position that is further above the quantification container and the hopper arranged above it and does not hinder the charging of the powder into the hopper. Alternatively, the hopper and the fixed quantity container arranged below the hopper may be located at an appropriate position to retract in the lateral direction.

In the adhering powder removing device according to the sixth aspect, when the powder is charged into the receiver through the hopper and the metering container from the lower opening of the metering container, the high-speed suction airflow forming means is the same as the metering container. It is retracted to an appropriate position retracted from the space between the suction opening of the exhaust duct. When the powder is completely charged into the receiver, the high-speed suction airflow forming means is arranged between the fixed quantity container and the exhaust duct from the retracted position. In this state, the upper opening of the high-speed suction airflow forming means is located immediately below and faces the lower opening of the metering container, and the lower opening of the high-speed suction airflow forming means covers the suction opening of the exhaust duct. When the air in the high-speed suction airflow forming means is forcibly exhausted from the exhaust duct, the air in the hopper and the metering container is also forcibly exhausted from the upper opening,
A high-speed airflow is generated on the inner wall of the hopper and the inner wall of the metering container, and the powder adhering to these inner walls is guided by this high-speed airflow to remove the powder from the inner wall. The powder introduced into the high-speed airflow is sucked into the high-speed suction airflow forming means and discharged. By forcibly exhausting the inside of the high-speed suction airflow forming means, the air outside the high-speed suction airflow forming means is sucked into the interior from the upper opening. Since it is generated, the powder adhering to the outer peripheral surface of the metering container is also guided by the high-speed air stream and removed.

According to a seventh aspect of the present invention, there is provided an adhering powder removing device which swings from an evacuation position between a member for adhering powder to be removed and an exhaust duct having an opening formed below the member. A high-speed suction airflow forming means is provided that is movable between an exhaust duct and the fixed quantity container and has a lower opening corresponding to the suction opening of the exhaust duct and an upper opening corresponding to the lower opening. By strongly exhausting the air in the exhaust duct, the high-speed airflow sucked from the upper opening removes the powder adhering to the member.

[0018]

【Example】

(Example 1) The adhered powder removing device described in this example 1 is one aspect of the invention having the configurations described in claims 1 to 5 of the present application.

As shown in FIGS. 1 and 2, an adhering powder removing device 1 according to an embodiment of the present invention has a supporting base 2, a supporting plate 3, a housing 4 and an exhaust duct 5.

The support base 2 is arranged horizontally. On the upper surface of the support base 2, a housing moving means for horizontally moving the housing 4, for example, an air cylinder 6 and the air cylinder 6 are inserted into the housing, and can be moved forward and backward by high-pressure air. A rod 7 is arranged which is coupled and supports the housing 4.

As shown in FIG. 3, the housing 4 includes a pair of side plates 4a facing each other, a top plate 4b laid over the upper ends of the side plates 4a, 4a, 4a and 4b. A rear plate 4c connected to the edge of
And a bottom surface portion corresponding to the upper surface plate 4b are opened, and an air flow passage port 8 is opened in the upper surface plate 4b. In this specification, the front surface portion of the housing 4 corresponding to the rear plate 4c is referred to as a front opening portion 4d, and the bottom surface portion corresponding to the upper surface plate 4b is referred to as a bottom opening portion 4e.
Called.

In this case 4, the rod 7 is coupled to the back plate 4c, and the rod 7 is suspended in the middle. That is, the lower end of the side plate 4 a and the lower end of the back plate 4 c in the housing 4 supported by the rod 7 are located above the upper surface of the support base 2 with a slight gap. As shown in FIG. 6, although not shown in FIG. 3, a flexible member such as a skirt member 9 made of rubber is attached to the lower ends of the side plate 4a and the rear plate 4c of the housing 4. . As will be described later, the skirt member 9 has a function of preventing air from entering the housing 4 through the gap when the air in the housing 4 is forcibly exhausted by the exhaust duct 5. In other words, when the air in the housing 4 is forcibly exhausted by the exhaust duct 5, as long as it is a member that can prevent the air from entering the housing 4 through the gap, it has various materials and configurations. The skirt member 9 can be formed. However,
If the lower end surface of the housing 4 slides on the upper surface of the support base 2 and air leakage from the gap between the lower end surface of the housing 4 and the upper surface of the support base 2 does not matter. The skirt member 9 need not be provided.

The opening position of the airflow passage port 8 of the top plate 4b of the housing 4 will be described later.

The housing 4 is moved forward and backward by the rod 7. However, if the forward and backward movement of the housing 4 is made more reliable, a guide member for guiding the forward and backward movement of the housing 4, for example, a guide. It is preferable to provide a rail or the like on the support base 2.

The support plate 3 is on this support base 2,
The housing 4 is vertically arranged so as to face the front opening 4d. In the standing position of the support plate 3, the front opening 4d of the case 4 is moved to the support plate 3 by moving the case 4 forward.
Is adjusted so that it touches the surface of. This support plate 3
The width of the front opening 4d of the housing 4 advanced to the support plate 3
Is large enough to close the support plate 3 and the height of the support plate 3 is large enough to close the front opening 4d of the housing 4 advanced.

A funnel-shaped hopper 13 having an upper opening 11 and a lower opening 12 is supported on the surface of the support plate 3 facing the housing 4 via a support member 10a, and the lower part of the hopper 13 is supported. Immediately below the opening 12 and at a predetermined distance from the lower opening 12, the fixed quantity container 1
4 is supported via the support member 10b.

As shown in FIG. 4, the fixed quantity container 14 is provided with an upper opening portion 15 that opens upward and a lower opening portion 16 that opens downward, and from the upper opening portion 15 toward the lower opening portion 16. It has an internal shape powder container 17 formed in an inverted conical shape, and above the lower opening 16,
The shield plate 18 is detachably attached. This shield 18
Has a through hole 19 formed therein. By moving the shielding plate 18 horizontally, the through hole 19 is formed into the powder container 1
7, the powder in the powder container 17 is moved to the lower opening 1
6, when the through hole 19 is retracted from the powder container 17 so that the shielding plate 18 becomes the bottom of the powder container 17,
It is driven by an appropriate driving means such as an air cylinder and its rod. Therefore, this quantitative container 14
Is provided with the lower opening 16 which can be opened and closed by providing the shielding plate 18.

Of course, the lower opening 16 which can be opened and closed does not have to include the shielding plate 18, but can be realized by combining other members. For example, as shown in FIG.
The rotary rod 21 having a through hole 20 having the same diameter as the horizontal cross section of the inner shape of the fixed quantity container 14 in the fixed quantity container 1
4, the through hole 20 is opened in the powder container 17 of the fixed quantity container 14 by rotating this rotary rod 21, and the powder in the fixed quantity container 14 is opened from the lower opening 16. When the through hole 20 deviates from the powder container 17 which is the internal space of the fixed quantity container 14 by dropping and rotating the rotary rod 21, the powder in the fixed quantity container 14 cannot be dropped from the lower opening 16. You may do it. A rotatable rotary rod 2 having such a through hole 20
1, the lower opening 16 that can be opened and closed
Can be

As shown in FIG. 4, a scraping member 22 is arranged near the upper opening 15 of the fixed quantity container 14. In this embodiment, the scraping member 22 has a roller 23 having an axial length equal to or longer than the diameter of the upper opening 15 and an axial center of the roller 23 so that the axial center of the roller 23 is rotatable. Has a roller support 24 that supports the roller 23 so that the roller 23 can move up and down, and that can move forward and backward so that the roller 23 can roll in the upper opening 15. The scraping-off member 22 scrapes off the powder which is piled up in the upper opening 15 of the fixed quantity container 14 by the roller 23 rolling on the upper opening 15.

In this embodiment, the scraping member 22 is constituted by the roller 23 and the roller supporting member 24, but the scraping member 2 in the present invention is used.
No. 2 is not limited to the structure shown in the above embodiment as long as the powder can be scraped off at the upper opening 15 of the fixed quantity container 14. In the present invention, the scraping member 22 may be composed of a doctor knife or the like which can be horizontally moved forward and backward by an appropriate driving means.

As shown in FIG. 1, an opening 25 of the exhaust duct 5 is opened below the fixed amount container 14 on the support base 2.

The exhaust duct 5 is connected to a powerful exhaust fan (not shown) via a pipe.

As shown in FIG. 1, in the suction opening 25 of the exhaust duct 5, as an initial position, a mounting table 26 having a mounting surface positioned slightly below the upper surface of the support base 2.
Is supported by the support member 27 so as to be vertically movable.
The support member 27 extends downward from the lower surface of the mounting table 26, is then bent at a right angle, and the support member that is bent and then extends horizontally penetrates the wall surface of the exhaust duct 5 to form the exhaust duct 5. Extend outside of. A horizontal support member 27 extending to the outside of the exhaust duct 5 is connected to a lower end of a vertically movable rod 29 of a drive means, for example, an air cylinder 28, held by the support plate 3.

On the upper surface of the mounting table 26, a receiver 30 for receiving the powder falling from the fixed quantity container 14 and accommodating the powder is mounted. A positioning member 31 is provided on the upper surface of the mounting table 26 so that the opening of the receiver mounted on the mounting table 26 is located immediately below the lower opening 16 of the fixed quantity container 14.

The space from the mounting surface of the mounting table 26 to the lower opening 16 of the fixed quantity container 14 at the initial position is sufficiently large so as not to hinder the placement of the receiver on the mounting table 26. Be adjusted as required.

The mounting table 26 can be moved upward from its initial position by driving the rod 29 of the air cylinder 28. The elevated position of the mounting table 26 is a position where the opening of the receiver 30 mounted on the mounting table 26 is close to the lower opening 16 of the fixed quantity container 14.

Next, the operation of the adhered powder removing device 1 having the above-mentioned structure will be described.

Normally, when a fixed amount of powder is stored in the receiver 30, the operation is as follows.

As shown in FIG. 1, the receiver 30 is mounted on the mounting table 26 at the initial position. The placement of this receiver 30 is
It can be performed by a gripping device of a handling robot (not shown).

The handling robot gripping device is capable of gripping the receiver, places the gripped receiver on the mounting table 26, and after placing the receiver on the mounting table 26, places it on another department. Those skilled in the art can appropriately design the structure so that it can be retracted.

When the receiver 30 is placed on the placing table 26,
The mounting table 26 is driven by the air cylinder 28 being driven.
Rises, and as shown in FIG. 4, when the opening of the receiver 30 is located in the immediate vicinity of the lower opening 16 of the fixed quantity container 14, the raising of the mounting table 26 is stopped.

In the fixed quantity container 14, the inner space of the fixed quantity container 14 is horizontally cut off by the shielding plate 18 into an upper part and a lower part.

The powder contained in the carrying container held by another handling robot (not shown) is thrown into the hopper 13 through the upper opening of the hopper 13 by the operation of the handling robot.

The handling robot grips the carrying container containing the powder and tilts or inverts the carrying container above the upper opening 11 of the hopper 13 so that the powder in the container is stored in the hopper 13. The structure can be appropriately designed as long as the structure can be dropped into, and such a structure can be easily devised by those skilled in the art.

The charged powder drops from the lower opening 12 of the hopper 13 into the upper opening 15 of the metering container 14. Since the amount of powder that has fallen is usually adjusted to a volume that is larger than the internal volume of the fixed quantity container 14, the powder contained in the fixed quantity container 14 is piled up from the upper opening 15 of the fixed quantity container 14. Is in a closed state. Then, by driving the scraping device, the roller 23 is moved to the upper opening 15
It rolls up, thereby scraping off the powder accumulated on the upper opening 15. By this scraping operation, the upper surface of the powder matches the upper opening 15.

Next, the shield plate 18 is horizontally moved so that the through hole 19 is aligned with the internal space of the fixed quantity container 14. The powder falls from the lower opening 16 into the receiver 30.

When a certain amount of powder is stored in the receiver 30, the air cylinder 6 is driven to move the mounting table 2
6 descends and returns to the initial position. When the mounting table 26 returns to the initial position, the gripping device of the handling robot (not shown) grips the receiver 30 and the powder-containing receiver 3 is held from the mounting table 26.
Remove 0.

By the above operation, a predetermined amount of powder is received in the receiver 30.
The powder is housed inside, but the powder adheres to the inner wall of the hopper 13 and the inner wall of the quantitative container 14 by, for example, static electricity. When accommodating a fixed amount of powder in the new receiver 30 by the next operation, it is necessary to remove the powder adhering to the inner walls of the hopper 13 and the constant amount container 14. If the powder was attached by the previous operation,
This is because if the next powder is stored in the receiver 30 by the same operation, the powder collected last time will be mixed into the next powder.

Therefore, in this attached powder removing apparatus 1, the housing 4 is moved forward by driving the air cylinder 6 which is the housing moving means. When the ends of the pair of side surface plates 4a and the upper surface plate 4b in the housing 4 come into close contact with the support plate 3, the forward movement of the housing 4 is stopped. When the forward movement of the housing 4 is stopped, the front opening 4d of the housing 4 is fixed to the support plate 3
It has been blocked by. In addition, this housing 4
The support plate 3 and the support plate 3 form an internal closed space. A hopper 13 and a fixed quantity container 14 are housed in this internal closed space. Further, the airflow passage port 8 provided in the upper surface plate 4b of the housing 4 is located immediately above the upper opening 11 of the hopper 13. In other words, the airflow passage port 8 provided in the top plate 4b of the housing 4 is directly above the upper opening 11 of the hopper 13 when the housing 4 and the support plate 3 form an internal closed space. It will be opened at the location.

Then, by driving the powerful exhaust fan, the air in the internal closed space is strongly exhausted from the suction opening 25 of the exhaust duct 5.

As shown in FIG. 6, when exhausted, the air outside the housing 4 flows into the housing 4 through the airflow passage port 8. Since the airflow passage 8 is located directly above the upper opening 11 of the hopper 13 and the upper opening 15 of the fixed quantity container 14 is located directly below the lower opening 12 of the hopper 13, the airflow passage 8 flows in. The air becomes a high-speed air flow, passes through the inner wall of the hopper 13 and the inner wall of the fixed quantity container 14, exits from the lower opening 16 of the fixed quantity container 14, and in some cases, flows in from the air flow passage port 8. The air in the housing 4 is entrained in the high-speed air current and flows into the upper opening 11 of the hopper 13 at high speed, or the hopper 13
The air in the housing 4 is entrained in the high-speed airflow from the gap between the lower opening 12 and the upper opening 15 of the fixed quantity container 14 and flows into the upper opening 15 of the fixed quantity container 14 at high speed.

By the high-speed airflow thus formed, the powder adhered to the inner wall of the hopper 13 and the inner wall of the metering container 14 is introduced into the high-speed airflow and removed from the inner wall. The powder removed from the inner wall is discharged from the exhaust duct 5 together with the airflow.

After continuing the operation of removing the adhered powder for a predetermined time, the driving of the powerful exhaust fan is stopped. The air cylinder 6 as the housing moving means is driven to retract the housing 4 and return the housing 4 to the initial position.

The adhering powder removing device having the above-described configuration according to one embodiment of the present invention has a wall surface to which the powder adheres from a different viewpoint, and accommodates a member which needs to remove the powder from the wall surface. And an exhaust means capable of exhausting the inside of the housing from the bottom of the internal closed space formed by the housing. Can be understood.

In the adhering powder removing device in such a way of view, the members having the wall surface to which the powder adheres and the powder need to be removed from the wall surface are the hopper 13 and the quantitative container 14. Is. The case capable of forming a high-speed airflow is the case 4 having the airflow passage port 8 on the upper end surface in the above-described embodiment.

In the above embodiment, the internal closed space is
It is formed of a housing 4, a support base 2, and a support plate 3.

In the apparatus of the embodiment shown in FIG. 1, the housing 4 moves horizontally on the support base 2 from its initial position, and thereafter, the front opening 4d of the housing 4 is attached to the support plate 3.
Since the internal closed space is formed by the housing 4, the support plate 3, and the support base 2 when the internal closed space is closed, in order to form the internal closed space, the housing 4 must move horizontally from the initial position. You don't have to. For example, in FIG. 1, the housing 4 is disposed above the hopper 13 at a position provided with a sufficient distance so as not to hinder the operation of charging the powder into the hopper 13, Even if the position is set as the initial position and the initial position is lowered toward the support base 2, the internal closed space can be formed as a result.

In the apparatus of the embodiment shown in FIG. 1, the internal closed space formed by the housing 4 is formed by the housing 4, the support base 2 and the support plate 3. It is not limited to being formed in such a manner.

For example, the casing may be formed of a front plate, a rear plate, a pair of side plates and an upper plate, and may have a structure having an opening at the bottom. In the case of a housing having such a structure, the hopper 13 and the fixed quantity container 14 are respectively supported by narrow columns (not shown) arranged in a line in a vertical direction, which hinders the operation of loading the powder into the hopper 13. The housing is arranged above the hopper 13 with a space that does not come to the door, and the position is set as the initial position of the housing. Then, the housing is lowered from its initial position so that the entire column, the hopper 13, and the fixed quantity container 14 are housed in the housing 4, and the housing 4 and the support base 2 form an internal closed space. Is also good. In this case, the support base 2 serves as the bottom of the internal closed space, and the opening of the exhaust duct 5 is opened at the bottom. Further, an airflow passage port may be provided on the upper surface plate of this housing, or an airflow ejection device described later may be provided.

The airflow passage provided on the top plate of the housing is
The number of small holes is not limited to one, and may be a plurality of small holes provided so as to form a high-speed air stream.

In the apparatus of the embodiment shown in FIG. 1, the housing 4 capable of forming a high-speed airflow has a top plate 4 thereof.
Although the airflow passage 8 is formed in b, it is not necessary to use such an airflow passage 8 to form a high-speed airflow. For example, when a member having a wall surface to which the powder adheres, for example, the hopper 13, or the hopper 13 and the fixed amount container 14 are housed in the housing 4 to form an internal closed space, the wall surface to which the powder adheres on the member. A high-speed airflow can also be formed by providing an airflow ejection device that ejects an airflow toward the.

In the adhered powder removing device described above,
The casing capable of forming the high-speed airflow removes not only the inner wall of the hopper and the inner wall of the metering device, but also the powder adhered to the outer wall or outer circumference of the hopper and the outer wall or outer circumference of the metering device.

(Example 2) The adhered powder removing device described in this example is an embodiment of the invention having the structure described in claim 6 of the present application.

The adhered powder removing apparatus shown in FIG. 7 is different from the adhered powder removing apparatus shown in FIG. That is, a high-speed suction airflow forming means is provided in place of the movable housing.

This high-speed suction airflow forming means is composed of the support base 2
Lower opening 51 that is substantially the same as or larger than the suction opening 25 of the exhaust duct 5 and the upper opening 16 that is substantially the same as or slightly larger than the lower opening 16 of the fixed quantity container 14. An inverted funnel-shaped hood 53 including 52,
It has a hood drive device, such as an air cylinder 6 and a rod 7 supporting the hood 53, which can move the hood 53 forward and backward to a position immediately above the suction opening 25 of the exhaust duct 5 and to a position retracted therefrom.

With this adhering powder removing device, the hopper 13
And when removing the powder adhering to the fixed quantity container 14,
The hood 53 is advanced by the hood drive device so as to cover the opening of the exhaust duct 5, and the suction opening 25 of the exhaust duct 5 is covered with the hood 53. Then, when the air is strongly sucked and discharged through the exhaust duct 5, the air is sucked from the upper opening 52 of the hood 53 into the hood 53 at high speed. By sucking air into the hood 53 at high speed from the upper opening 52, the upper opening 52 of the hood 53
The high-speed airflow also circulates in the internal space of the fixed quantity container 14 that continues upward from the lower opening 16 of the fixed quantity container 14 that faces directly above the vertical space that is continuous with the internal space of the hopper 13.
By this high-speed air flow, the powder adhering to the inner wall of the hopper 13 and the inner wall of the fixed quantity container 14 is guided and removed.

The adhering powder removing device shown in FIG. 7 is also an embodiment of the invention having the structure described in claim 7 of the present application.

That is, the members to which the powder is attached are the hopper and the fixed quantity container.

According to a seventh aspect of the present invention, there is provided an adhering powder removing device which swings from a retracted position between a member for adhering powder to be removed and an exhaust duct having an opening formed below the member. A high-speed suction airflow forming means is provided that is movable between an exhaust duct and the fixed quantity container and has a lower opening corresponding to the suction opening of the exhaust duct and an upper opening corresponding to the lower opening. By strongly exhausting the air in the exhaust duct, the high-speed airflow sucked from the upper opening removes the powder adhering to the member.

[0070]

[Effect] According to the present invention, a high-speed air stream is formed along the member to which the powder to be removed adheres, for example, the hopper and the container wall of the quantitative container, and the powder adhered to the container wall is guided and removed by the high-speed air flow. Therefore, the powder can be efficiently removed from the member.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing a side surface of an adhering powder removing device according to an embodiment of the present invention.

FIG. 2 is a schematic explanatory view showing a plane of an adhered powder removing device according to an embodiment of the present invention.

FIG. 3 is a perspective view showing a housing used in the adhered powder removing apparatus according to an embodiment of the present invention.

FIG. 4 is a schematic explanatory view for explaining a positional relationship among a hopper, a scraping device, a fixed quantity container, a receiver, and a mounting table in an attached powder removing device which is an embodiment of the present invention. In this explanatory view, a part of the fixed quantity container is cut away and its cross section is shown.

FIG. 5 is a partially cutaway cross-sectional explanatory view showing another aspect of the quantitative container.

FIG. 6 is a view showing an adhering powder removing apparatus according to an embodiment of the present invention, which adheres to a hopper and a fixed quantity container housed in an internal closed space formed by a casing, a supporting plate and a supporting base. It is explanatory drawing for demonstrating the effect | action which removes powder with a high-speed airflow.

FIG. 7 is a schematic explanatory view showing a side surface of an adhering powder removing device according to another embodiment of the present invention.

[Explanation of symbols]

1 ... Adhering powder removing device, 2 ... Support base, 3 ...
・ Support plate, 4 ... Case, 4a ... Side plate, 4b ...
・ Top plate, 4c ・ ・ ・ Back plate, 4d ・ ・ ・ Front opening,
4e ... bottom opening, 5 ... exhaust duct, 6 ...
Air cylinder, 7 ... Rod, 8 ... Air flow passage port, 9 ... Skirt member, 10a ... Support member, 1
1 ... Upper opening, 12 ... Lower opening, 13 ...
・ Hopper, 14 ... fixed quantity container, 15 ... upper opening, 16 ... lower opening, 17 ... powder container, 1
8 ... Shielding plate, 19 ... Through hole, 20 ... Through hole, 21 ... Rotating rod, 22 ... Scraping member, 23
... Roller, 24 ... Roller support, 25 ... Suction opening, 26 ... Mounting table, 27 ... Support member, 2
8 ... Air cylinder, 29 ... Rod, 30 ...
..Receiver, 51 ... lower opening, 52 ... upper opening,
53 ... Hood.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Masaaki Suzuki 2-16-2 Noguchi-cho, Higashimurayama-shi, Tokyo Nikkiso Higashimurayama Manufacturing Co., Ltd. (72) Keisuke Kato 2-16-2 Noguchi-cho, Higashimurayama-shi, Tokyo Nikkiso Higashimurayama Co., Ltd. (72) Inventor Masanori Niiyama 2-16-2 Noguchi-cho, Higashimurayama, Tokyo Nikkiso Co., Ltd. (72) Inventor Yoshihisa Hiraguri 2-16-2 Noguchi-cho, Higashimurayama, Tokyo Nikkiso Co., Ltd. Higashimurayama Factory

Claims (7)

[Claims] 1. A casing capable of accommodating a member having a wall surface to which powder adheres and capable of forming a high-speed airflow along the wall face, and a bottom portion of an internal space formed by the casing, An adhering powder removing device, comprising: an exhausting device capable of exhausting. 2. A hopper having an upper opening portion and a lower opening portion, and a hopper provided immediately below the lower opening portion of the hopper with a sufficient spacing for disposing a scraping member from the lower opening portion. A casing capable of accommodating therein a fixed quantity container having an upper opening and a lower opening that can be opened and closed, and a housing capable of forming a high-speed airflow along the inner wall of the hopper and the inner wall of the fixed quantity container; An adhering powder removing device comprising: an exhaust unit capable of exhausting the inside of the housing from the bottom of the internal space formed by the above. 3. A hopper having an upper opening and a lower opening, and a hopper provided immediately below the lower opening with a sufficient spacing for disposing a scraping member from the lower opening, A vertical support plate that supports a fixed quantity container having an upper opening and a lower opening that can be opened and closed, and a space below the fixed quantity container that is sufficient for placing a receiver. A bottom surface provided with the housing, a housing capable of forming an inner space together with the support plate and the bottom surface to accommodate the hopper and the fixed quantity container, and a suction opening opening to the bottom surface. An adhering powder removing device having an exhaust duct. 4. The adhering powder removing device according to claim 2, wherein the casing has an airflow passage opening on an upper surface plate located above an upper opening portion of the hopper. 5. The adhering powder removing device according to claim 2, wherein the casing has an air flow ejecting device that ejects an air flow toward an upper opening of the hopper. 6. An upper part of a hopper having an upper opening and a lower opening, which is arranged directly below the lower opening with a sufficient spacing for disposing a scraping member from the lower opening. An exhaust duct having a suction opening, which is arranged at a predetermined interval immediately below the lower opening of the fixed quantity container having an opening and an openable lower opening, and the exhaust gas from the retracted position. A high-speed suction airflow forming means movable between a duct and the fixed quantity container and having a lower opening corresponding to the suction opening of the exhaust duct and an upper opening corresponding to the lower opening. An adhered powder removing device characterized by the following. 7. An exhaust duct having a suction opening, which is arranged at a predetermined interval directly below a member having a wall surface to which powder adheres, and the exhaust duct and the quantitative container from a retracted position. And a high speed suction airflow forming means having a lower opening corresponding to the suction opening of the exhaust duct and an upper opening corresponding to the lower opening. Adhering powder removing device.