JPS6360813A - Conveying device for powder and grain body - Google Patents

Abstract

PURPOSE:To convey different types of materials with a single conveying pipe by providing a transfer means which charges and discharges a powder and grain body into and out of a capsule on each of the feeding part and the receiving part of said power and grain body, and conveying said powder and grain body in a condition being charged in said capsule between said two parts. CONSTITUTION:A single pneumatic conveying pipe 3 which is connected to an air compressor 4 is provided in between plural powder and grain body feeding parts 1 and plural powder and grain body receiving parts 2. And, a first transfer means 9 which charges the powder and grain body in the feeding part 1 into a capsule C and which sends this capsule C into the conveying pipe 3 is provided between each feeding part 1 and the conveying pipe 3. And, a second transfer means 27 which discharges the powder and grain body out of the capsule C which came through the conveying pipe 3 to send the powder and grain body into the receiving part 2, is provided between the conveying pipe 3 and each receiving part 2. Thereby, since the powder and grain body can be conveyed in a condition that it is charged in the capsule C, a number of different types of materials can be conveyed by commonly using a single conveying pipe 3.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a transportation device for powder and granular material, and more specifically, a device for transporting powder and granular material, and more specifically, a device for transporting powder and granular materials, and more specifically, a device for transporting powder and granular materials, and more specifically, a device for transporting powder and granular materials, and more specifically, a device for transporting powder and granular materials, and more specifically, a device for transporting powder and granular materials, and more specifically, a device for transporting powder and granular materials, and more specifically, a device for transporting powder and granular materials, and more specifically, a device for transporting powder and granular materials. The present invention relates to a powder transport device for transporting powder and granular material to a plurality of receiving sections, and in which a single air transport pipe is commonly used to supply the material to the receiving sections.

(Prior art) For example, in automated equipment that continuously manufactures multiple types of plastic molded products colored in different colors in parallel, there are multiple mixers that mix raw material pellets and colorants, and In this case, multiple processing machines such as injection molding machines are prepared to mold the powdered material mixed in the mixer, and the material in each mixer is automatically supplied to the corresponding processing machine. Conventionally, for example, a mixer is prepared for each processing machine, the mixer is integrally mounted on the processing machine via a measuring means, and the material in the mixer is weighed by the measuring means. It is known that materials are dropped into a processing machine.

However, in the conventional example, a separate mixer is required for each processing machine, which inevitably increases the number of mixers installed and increases equipment costs. Furthermore, when changing the coloring agent to a different color or changing the material used, there is the inconvenience of having to clean multiple mixers each time, and the mixers are located on the processing machine. Therefore, since it is located at a considerably high position from the floor,
In addition to cleaning, inspection and adjustment work is time-consuming. Furthermore,
If the mixer is installed in or near the material warehouse, it would be convenient and convenient to input the raw materials, but this is not possible if it is integrated with the processing machine as in this conventional example.

For this reason, as a conventional improvement measure, for example, multiple mixing machines and multiple processing machines are installed at locations apart from each other,
An air transport pipe communicating with an air compressor is installed between each mixer and each processing machine, and a metering means provided on the mixer side
There is a system in which the granular material presented in 1.1 is pressure-fed to the processing machine through the transport pipe, and in this improved example, the mixing machine and the processing machine can be automatically moved to the desired location by constructing the piping.[1]
In addition, the mixer can be installed on the floor to facilitate cleaning, inspection, and adjustment.

(Problems to be Solved by the Invention) However, in the case of the conventional improvement example, the powdery material adheres and accumulates on the inner wall of the transport pipe, so when transporting dissimilar materials of different colors, it is necessary to It is necessary to clean the
In reality, to avoid such inefficiency, separate air transport pipes are installed between each mixer and each processing machine, which increases the piping space and increases equipment costs. <''2.When changing the color tone, etc., it is necessary to clean not only the mixer but also the inside of each transport pipe, so there is a problem that cleaning work requires more time and effort than in the conventional example. . In addition, a transport manifold is installed between multiple processing machines that process materials of the same color and a mixing machine that supplies the material to these processing machines, and signals from the processing machines are connected to each branch. It may be possible to avoid reducing the number of mixing machines compared to the number of processing machines by providing a configuration with a control valve that opens in response to Moreover, it is difficult and impractical to clean, inspect and maintain the transport pipe.

Incidentally, the above-mentioned problems are not limited to the objects mentioned in the conventional example, but may also occur with various powders and granules that are transported from a plurality of powder and granule supply sections to a plurality of powder and granule receiving sections. It is something.

The present invention has been made in view of the conventional problems, and allows a single pneumatic transport pipe to be used in common to transport a large number of different types of materials, while receiving the same types of materials from one supply section. enabling feeding of the material to multiple receiving sections;
The purpose of this invention is to reduce the cost of equipment and save piping space, as well as to eliminate the need to clean the air transport pipe when replacing materials in the supply section.

(Means for Solving the Problems) In the present invention, in order to achieve such an object, between the plurality of granular material supply sections (1) and the plurality of granular material receiving sections (2), A single air transport pipe (3) communicating with the air compressor (4)
) between the supply section (1) and the transport pipe (3), the powder and granular material in the supply section (1) is filled into capsules (C), and the capsules (C) A first transfer means (9) for feeding into the transport pipe (3) is provided, and the transport pipe (3)
) and the receiving section (2), a second transfer means for discharging the powder from the capsule (C) transported through the transport pipe (3) and sending it to the receiving section (2). (27)
.

(Function) According to the above configuration, the powder and granules present in the powder and granule supply section (1) are transferred to the capsule (C) in a required amount by the first transfer means (9).
is filled into the capsule (C) and sent into the air transport pipe (3) in a sealed state, and after being transported to the corresponding powder receiving part (2) through this transport pipe (3),
It is taken out from the capsule (C) by the second transfer means (27) and sent to the receiving section (2).

Therefore, the transport pipe (3) performs the function of transporting the capsule (C), and no matter what kind of powder or granular material is inside the capsule (C), it has nothing to do with the transport of the capsule. , many types of powder and granular materials can be transported with one transport pipe (3), and even if the content of the powder and granular materials in each supply section (1) changes within the transport pipe (3), It requires no intrusive cleaning. Furthermore, for example, it is possible to arrange a large number of combinations of one supply section (1) and a plurality of receiving sections (2) in parallel without requiring any design changes.

(Example) Hereinafter, an example of a powder transport device according to the present invention will be described based on the drawings.

The equipment shown in Figures 1 to 3 is a mixer (powder supply section) (1) injection molding machine that mixes multiple types of powder and granules into which coloring is applied by mixing coloring agents to plastic raw material pellets. The present invention is applied to equipment in which powder and granule are transported to processing machines (powder and granule receiving section) (2) consisting of processing machines (2), etc., and continuously molded by these processing machines (2). (1) are installed in parallel, for example, in a material warehouse storing raw material pellets and colorants, and each of the processing machines (2) is installed in a factory building located away from the material warehouse, and these mixing machines are installed. (
A single air transport pipe (3) is installed between the machine (1) and the processing machine (2).

This transport pipe (3) passes below each mixer (1), reaches above each processing machine (2), and then passes beyond each processing machine (2) to the vicinity of the endmost mixer (1). The starting end of the pipe is in communication with the air compressor (4), and the terminal end is open.

The mixer (1) mixes unused raw material pellets, recycled pellets, and colored pellets that are dropped at a predetermined ratio from the first and second hoppers (5, 6) and a coloring agent tank (7) that are arranged in parallel above. The agent is stirred and mixed and supplied to a storage hopper (8) provided below, and the tank (7) is equipped with each mixer (
1) Each container contains a different color of coloring agent, therefore,
Each mixer (1) synthesizes powder and granules of different colors. A first transfer means (9) is provided between each storage hop (8) and the transport pipe (3) for each mixer (1).
) is provided, and after the powder and granular material in the storage hopper (8) is weighed and filled into the capsule (C) by this first transfer means (9), it is sealed in this capsule (C). It is sent into the transport pipe (3).

That is, the first transfer means (9) is connected to the storage hopper (8).
A weighing hopper (10) arranged (ξ) facing the discharge pipe (8a) of
), a capsule mounting table (11) arranged below this, and a filling cylinder (which penetrates through the mounting table (11) and presses the capsule (C) to the discharge port (10a) of the weighing hopper (10). 12).

A push-down cylinder (13) for pushing down the capsule (C) filled with powder or granular material is arranged on the side between the weighing hopper (10) and the filling cylinder (12), and ,
The placing table (11) is provided with a guide part (11a) that guides the pushed down capsule (C) to the capsule receiving port (3a) of the transport pipe (3). There is a capsule drop opening (
11b). Further, the receiving port (3a) of the transport pipe (3) is opened and closed by a pipe opening/closing cylinder (14), and after the capsule (C) is introduced into the transport pipe (3), it is kept in a sealed state. It is.

On the other hand, as shown in FIG. 3, the capsule (C) has an on-off valve (16) inserted in the axial direction of the cylindrical capsule body (15), and a valve seat body ( 1
7), and a bottom block (18) is screwed to the other end, and a valve closing spring (19) is attached to the bottom block (18) in the axial direction, and a catch body that is free to slide in the axial direction is attached. (20), and furthermore, a valve body (22) connected to this seat body (20) via a valve rod (21) is attached to the outer end of the opening (17a) of the valve seat body (17). 1. A pair of seal rings (23) are fitted to both ends of the outer periphery of the bushel main body (15), and both seal rings (23) are arranged to protrude from the formed valve seat (17b). ) A plurality of sorting rings (24) are fitted at predetermined positions between the holes. Furthermore, I】1
The seal ring (23) is in close contact with the inner surface of the pipe wall in the air transport pipe (3) to perform an air sealing action, and each of the sorting rings (24) is made of, for example, an iron ring. The position on the circumferential surface of the capsule body is different for each capsule (C) depending on the content of the powder and granule to be filled. This makes it possible to detect it.

Furthermore, since the valve seat bodies (17) and the bottom block (18) at both ends of the capsule body (15) can be easily removed by screwing, the inside of the capsule (C) can be easily cleaned.

Now, when a call signal is transmitted from one of the processing machines (2), the call signal is received by the mixer (1) having the powder and granular material to be supplied to the processing machine (2), and According to the electrical signal, the discharge pipe (8a) of the storage hopper (8)
The opening/closing damper (26) provided in the opening/closing damper (26) opens and drops the required amount of powder and granular material in the storage hopper (8) into the weighing hopper (10).In this case, the capsule (C) The above-mentioned mounting table (11) -h is placed in an upright position, and the contact surface (17c) of the upper peripheral edge of the valve seat body (17) is in contact with the discharge port (10a) of the weighing hopper (10) as described below. At the same time, the piston (12a) of the filling cylinder (12) advances upward and comes into contact with the bottom bearing surface (20a) of the seat body (20), thereby closing the valve. The opening (17a) is opened by pushing up the body (22) against the biasing force of the valve closing spring (19), and the powder in the weighing hopper (8) is filled into the capsule (C). It is. The capsule (C) filled with powder and granules is then pushed down by the guide part (lla) by the operation of the pushing cylinder (13).
) side, and the capsules (C) that were sent into the guide part (lla) earlier are sent one by one from the drop II (1lb) through the capsule receiving port (3a) into the transport pipe (3) in the order of feeding. The receiving port (3a) is then sealed by the operation of the pipe opening/closing cylinder (14),
The capsule (C) is connected to the transport pipe (3) by compressed air blown from the air compressor (4) with the valve body (22) in front.
The inside is fed under pressure to one side of the processing machine (2).

A second transfer means (27) is provided for each processing machine (2) between the processing machine (2) and the transport pipe (3), and this second transfer means (27) allows the transport pipe to The powder and granules are discharged from the 11;1 capsule (C) that has been transported through (3), and the powder and granules are sent to the processing machine (2).

That is, the second transfer means (27) includes a stopper (28) that is movable in and out of the transport pipe (3), and a pipe opening/closing cylinder (2θ) that opens and closes the lower surface side of the transport pipe (3). , the powder/grain material receiving port (30) of the processing machine (2) and the transport pipe (3)
A capsule receiving case (31) provided between the capsule (C) and a discharge cylinder (32
). Then, the second transfer means (27) of the processing machine (2)-H which transmitted the call signal first transfers the stopper (2) to the stopper (2) before the capsule (C) arrives.
8) enters the transport tube (3) and stops the capsule (C) at a predetermined position. Next, the tube opening/closing cylinder (29
) opens and rotates the lid (33) at the bottom of the transport tube (3) around the hinge (34) to open the capsule (C
) is guided by the lid (33) while opening the receiving port (30).
It is placed in an inverted position with the opening (17a) facing downward.

Thereafter, the discharge cylinder (32) operates to open the on-off valve (16), and the powder inside the capsule (C) is charged into the processing machine (2). After discharging the powder, the empty capsule (C) is returned to the transport pipe (3) again by the closing operation of the pipe opening/closing cylinder (29), and is passed through the transport pipe (3) to the endmost mixer (1). ) to return to the vicinity.

In addition, in order to return this capsule (C) to the transport pipe (3),
As shown by the imaginary line in FIG. 3, a spherical recess (20b) is provided in the seat body (20) of the capsule (C), and a spherical protrusion is provided at the tip of the piston (29a) of the tube opening/closing cylinder (29). The spherical protrusion (29b) is fitted and locked into the spherical recess (20b) during the capsule opening operation to pull up the empty capsule (C) and open/close the tube (
When the protrusion (29) is closed, the protrusion (29) is subjected to prying action.
9b) and the recess (20b) may be adopted.

The open terminal end of the transport pipe (3) faces the transport start end (35a) of the capsule transport conveyor (35) arranged behind the mounting table (11), and the open end of the transport pipe (3)
The capsule (C) that was pulled out from h is transferred to the conveyor (35
) to each mixer (1).

A transfer section (36) is disposed between the conveyor (35) and each mixer (1).

Each transfer section (36) transfers the empty capsule (C) to the stage (11) directly below the weighing hopper (10), and the transfer section (36) includes each mixer (1). ), the sorting means (25) installed corresponding to the conveyor (3
5) A guiding cylinder (37) that guides the upper capsule (C) to fall onto the mounting table (11), and a weighing hopper (37) that raises the guided capsule (C) onto the mounting table (11). 10) An upright chuck (38
).

The capsule (C) transferred on the conveyor (35)
) passes over the sorting means (25) corresponding to the mixer (1) having the powder and granular material to be filled therein, the sorting means (25) sends out a detection signal, and upon receiving this signal, the The guide cylinder (37) operates to drop the capsule (C) onto the mounting table (11). In addition, the sorting means (25
), for example, a proximity switch consisting of a non-contact relay or the like is placed at a predetermined position on the conveyor (35) corresponding to each mixer (1), that is, when the capsule (C) to be detected passes, the proximity switch is placed at a predetermined position on the conveyor (35). The rings (24) are placed in a position where they overlap, and when the capsule (C) passes over this proximity switch, when the sorting ring (24) overlaps the switch, this switch becomes "on" and the guide Various types of cylinders (37) can be selected.

Next, the capsule (C) that has fallen onto the mounting table (11) is grabbed by the upright chuck (38) and displaced to an upright position, and is further lifted onto the mounting table (11) by the chuck (38). The center is aligned with the weighing hopper (10), and then the powder from the mixer (1) is filled as described above, and the processing machine (2) -
1: The transport pipe (3) returns to the transport section (36) through a circular movement in the piping route.

The upright chuck (38) has two functions: a rotational movement for displacing the capsule (C) from a lying position to a standing position, and a rotational movement for moving the capsule (C) directly below the weighing hopper (10) for center alignment. On top of the above-mentioned push-down cylinder (1
In order to omit step 3), it is preferable to have a configuration in which a tilting motion is added to push down the capsule (C) filled with powder or granular material.

In addition, when piping the air transport pipe (3), it is necessary to keep the curvature of the curved part within a set range so as not to impede the pressure feeding of the capsule (C), but in this case, the transport pipe (3) Since only one pipe is connected, this level of restriction does not pose a problem in terms of piping.

In the apparatus of this embodiment having the above configuration, a plurality of processing machines (2) are prepared for each of the plurality of mixers (1), and any residual powder or granular material in each processing machine (2) is prepared. When the amount reaches zero or a small amount, the processing machine (2) sends a call signal to the corresponding mixer (1), and in response to this signal, the powder and granules are transported through the transport pipe (3). Since the powder is transported in capsules, different types of powder and granules can be quickly transported to the destination processing machine (2) using a single wooden transport pipe (3), and there is no need to clean the transport pipe (3). It becomes. Further, after the powder and granular material υF has been discharged, the capsules (C) are returned to the waiting area through the transport pipe (3), and each capsule (C), which has been preset with the powder and granular content to be filled, is sent to the sorting means (25).
Since the destination is sorted by the machine and sent to the corresponding mixer (1), it is possible to perform continuous molding by automation from mixing raw materials to molding. There is no risk of contamination.

In the above embodiment, the capsule (
C), but conversely, the air compressor (4
) may be provided at the top end of the transport pipe (3) to transport the capsules (C) by suction, or air compressors (4) may be provided at multiple locations on the transport pipe (3) to transport the capsules (C). The operation of each air compressor (4) may be time-controlled so that the capsules (C) can be transported simultaneously by pumping or suction.

Further, as long as the capsule (C) can be filled and discharged with powder and granular material and can be pneumatically transported in the pneumatic transport pipe (3), its mode can be freely changed.

The apparatus of the present invention can be applied to transporting various types of powder and granular materials in addition to transporting powder and granular materials in the plastic raw material molding equipment described in the above embodiments.

(Effects of the Invention) As explained above, according to the present invention, the air compressor (4) is connected between the plurality of powder supply parts (1) and the plurality of powder and granule reception parts (2). A single air transport pipe (3) communicating with the supply part (1) is installed between the supply part (1) and the transport pipe (3), and the powder and granular material in the supply part (1) is encapsulated in the capsule (C). A first transfer means (9) for feeding the capsule (C) into the transport tube (3) is provided, and a first transfer means (9) is provided between the transport tube (3) and the receiving part (2). Since a second transfer means (27) is provided for discharging the powder from the capsule (C) that has been transported through the pipe (3) and sending it to the receiving section (2), a single transport pipe is used. (3) Although it is possible to transport a large number of different materials by sharing them, mixing of these different materials does not occur. Also,
Since the same type of powder and granular material can be sent from one supply section (1) to multiple receiving sections (2), processing is possible between the equipment on the supply section (1) side and the equipment on the receiving section (2) side. Even if there is a difference in capacity, the utilization efficiency of these facilities can be improved, and the cost of equipment can be reduced accordingly.

Furthermore, since only one transport pipe (3) is installed, the piping itself is easy and the piping space can be saved significantly. Also, when replacing the powder material in the equipment on the supply section (1) side with a different type of material, the pneumatic transport pipe (3
), and has various advantages such as being able to prevent equipment operating efficiency from decreasing due to cleaning.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of a powder transport device according to the present invention, in which Figure 1 is an overall configuration diagram, Figure 2 is a plan view of main parts, and Figure 3 is a vertical cross-section of a capsule. It is a diagram. (1) Powder supply section (2) Powder receiving section (3) Air transport pipe (4) Air Compressor (9)...First transfer means (27)...Second transfer means (C)...Capsule Figure 2...-2'n1 tor excitement

Claims (1)

[Claims] Plural powder supply parts (1) and plural powder reception parts (2)
A single air transport pipe (3) communicating with the air compressor (4) is installed between the supply section (1) and the transport pipe (3).
), the powder and granular material in the supply section (1) is transferred to a capsule (C
) is provided, and a first transfer means (9) for feeding the capsule (C) into the transport pipe (3) is provided between the transport pipe (3) and the receiving part (2). Transport pipe (3)
a second transfer means (for discharging the powder and granular material from the capsule (C) transported through the capsule and sending it to the receiving section (2);
27) A transporting device for powder or granular material, characterized by comprising: