JPH0577006U - Cement automatic packing machine - Google Patents

Abstract

(57) [Summary] [Purpose] Foreign substances are separated during the final cement bagging process, and no foreign substances are mixed into the product. [Structure] A wire mesh 5 is stretched so that cement passes through the discharge port 4 of the filling tube 1 and solidified material does not pass through it.
A cleaning nozzle 6 that blows out compressed air along the inner surface of the wire mesh 5.
Equipped with. A discharge port 11 is provided in the outer tube in the vicinity of the wire mesh 5 of the filling tube 1 so that the inner tube is loosely fitted in the outer tube in the axial direction and opened when the holes coincide with each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a filling-tube type automatic packaging machine used for packaging powder such as bag-filled cement.

[0002]

[Prior Art]

 Fig. 5 shows a vertical cross-sectional view of the main part in the vicinity of the filling tube of the conventional automatic bagging cement packaging machine. The cement supplied from the upper surge bin 20 is sent to the base 22 of the filling tube 1 by the rotary impeller 21 and jetted downward from the tip of the filling tube 1 by compressed air (not shown). The cement bag has a hole at the top corner for filling with cement. When packing the bag, attach the bag to the packing machine so that the filling tube 1 is inserted into this hole. Suspend the bag and pack it. The cement bag is placed on the weighing table 24.

When the bag is inserted into the filling tube 1, the shut-off valve 23 of the filling tube is opened, and the cement is filled in the bag through the filling tube 1 by the compressed air. When the filling amount reaches a certain weight, the weighing table 24 operates, closes the shutoff valve 23 to stop the cement supply, and the weighing table 24 turns to send out the cement bag filled with cement and close the bag filling hole. .

In such an automatic cement packaging machine, it is necessary to prevent foreign matters from being mixed into the product from the viewpoint of strict quality control of the product. Conventionally, in such a bagging cement automatic packaging machine, in order to prevent the inclusion of solidified matters and foreign substances in the final product, a sieve such as trommel is placed at the raw material inlet before entering the raw material silo of the automatic packaging machine. The current situation is to install it and deal with it. Such a sieving device is an effective means for removing foreign matters and solidified substances mixed in during the manufacturing process and transportation. However, since trommel has a problem of clogging of the mesh and the mesh cannot be made smaller, the separation particle size is limited, and the result is that fine foreign matter is allowed to enter. In addition, foreign matter and solidified matter generated inside the packaging machine could not be dealt with by Trommel, which is pre-treated at the entrance of the packaging machine.

[0005]

[Problems to be solved by the device]

 The present invention is an automatic cement filling and wrapping machine that uses air to separate foreign substances and solids immediately before bagging, preventing foreign substances and solids from entering the final product, and separating them. The present invention provides an automatic cement packaging machine capable of easily ejecting foreign substances and the like outside the system.

[0006]

[Means for Solving the Problems]

 The present invention is an automatic bagging cement packing machine, in which a wire mesh having a mesh through which cement passes but does not pass through solidified matter is stretched at the outlet of a filling tube and a cleaning nozzle which blows out compressed air along the inner surface of the wire mesh. The automatic cement packing machine is characterized by having a foreign matter discharge port that is provided with a free passage and is provided in the filling tube near the wire mesh. In this case, the openable / closable foreign matter discharge port is assumed to be the discharge port that opens when the hole provided in the inner cylinder that is loosely fitted in the outer cylinder so as to be slidable in the axial direction matches the hole provided in the outer cylinder. It is suitable. Completely prevent foreign matter from entering the cement bag.

[0007]

[Action]

 In the present invention, a wire mesh with a size of mesh that allows the passage of cement but not foreign matters or solidified substances is stretched at the tip of the filling tube at the discharge part of the automatic packaging machine for bagging cement in the final process of cement production. This prevents foreign matter and solidified matter from entering the bagged product. With conventional trommel, etc., clogging is likely to occur and the mesh cannot be made small.However, in the present invention, since the wire mesh forces the cement to pass by air, the cement passes but the solidified matters and foreign matters do not pass. The mesh can be made small so that it does not pass through, and there is no clogging due to agglomeration or adhesion of cement. In addition, the relatively soft solid is crushed by the impact caused by the collision with the metal net.

The foreign matter and the like separated by the wire mesh are discharged to the outside from the foreign matter discharge port provided in the filling tube after the packaging work is completed. The structure of the foreign matter discharge port is a double structure of the conventional filling tube, and holes are provided in the outer cylinder and the inner cylinder.When discharging foreign matter, the inner cylinder is slid and the holes are aligned to open the discharge port and remove foreign matter. It is dropped from this opening to the bottom and discharged. When the bag is inserted into the filling tube, such an inner cylinder has a structure that the foreign matter discharge port closes and the opening cannot be opened until the bag comes off the nozzle. Be sure to prevent.

[0009]

【Example】

 As a result of using the filling tube 1 shown in Fig. 1 and Fig. 2 in the cement automatic wrapping machine manufactured by Japan Automatic Bagging Machine Industry Co., Ltd. and using it for the actual bagging work, it operates smoothly and improves the quality control. ing. 1 is a bottom view of a filling tube 1 of an embodiment of the present invention, FIG. 2 (a) is a side view thereof, and FIG. 2 (b) is a front view thereof.

The filling tube 1 is composed of a main body tube 2 and a filling tube mounting outer cylinder 3, and a downward opening 4 is provided on the tip side. In the present invention, a wire mesh 5 is stretched over the opening 4 at the tip of the filling tube 1. This wire net 5 has a mesh that allows cement to pass through but does not allow foreign matter to pass through, and separates the foreign matter so that it does not enter the bag. A slit slit formed by arranging wedge wires in a slit shape may be used. Cement is filled into the bag through this wire mesh. Since the cement passes through the wire net 5 by compressed air, the net is not clogged. An air pipe 6 for blowing compressed air is provided along the surface of the wire net 5 on the inner surface side of the filling tube. The air pipe 6 is for cleaning foreign matter remaining on the net.

The movable inner cylinder 7 was slidably fitted into the body tube 2 of the filling tube 1 so as to be in close contact with the inner diameter of the body tube 2. That is, the main body tube 2 is an outer cylinder, and the movable inner cylinder 7 is an inner cylinder. The movable inner cylinder 7 has an outer diameter that fits loosely into the inner diameter of the filling tube 1 and has a semicircular cross section whose cross section is slightly larger than the semicircle. A foreign matter discharge port 8 is opened in the movable inner cylinder 7. The movable inner cylinder 7 has a drive rod 9 for sliding movement in the axial direction penetrating through the body tube 2 of the filling tube and the tube wall of the outer cylinder 3 and protruding to the outside, and is attached to the inner cylinder operating plate 10. There is. This penetrating portion is a long hole 12.

The body tube 2 of the filling tube 1 is provided with a foreign matter discharge port 11 and discharges the foreign matter when it matches the foreign matter discharge port 8 of the movable inner cylinder 7. The foreign matter discharge port 11 is opened downward at a portion where the air blown out from the cleaning air pipe blows the foreign matter. When the cement bag is attached to the filling tube 1, the foreign matter discharge port 11 pushes the inner cylinder operating plate 10 to move the movable inner cylinder 7, so that the foreign matter discharge port 11 is always closed. It is like this.

The usage of the embodiment is as follows. Insert the bag to be packed into the filling tube 1. At that time, the inner cylinder operating plate 10 is simultaneously pushed into the packaging machine body side. FIG. 3 shows this state, and the inner cylinder actuating plate 10 moves the movable inner cylinder 7 to the main body side (direction of arrow 13) via the drive rod 9. At this time, the foreign matter discharge port 8 formed in the movable inner cylinder 7 is displaced from the foreign matter discharge port 11 of the filling tube, and the foreign matter discharge port 11 of the main body tube 2 is closed. The product is then pumped into the bag as normal. When the specified weight is reached, the pumping is stopped and the filling tube 1 is pulled out and the packaging is completed.

In this repetition, when the drive rod 9 of the inner cylinder actuating plate 10 is pulled back to the original position in the direction of arrow 14 as shown in FIG. 4 midway and after the end of work, the movable inner cylinder 7 is pierced. The foreign matter discharge port 8 and the foreign matter discharge port 11 of the main body tube 2 of the filling tube are opened with their openings aligned at the same position. Heavy foreign objects fall from this opening under their own weight. Further, the foreign matter that does not fall from the opening is blown by the air ejected from the air tube 6 and is discharged.

[0015]

[Advantage of the Invention] Since the automatic cement packing machine of the present invention is configured as described above, since the foreign matter is completely separated and the cement is bagged in the final bagging process without causing clogging, No foreign matter was mixed into the product.

[Brief description of drawings]

FIG. 1 is a bottom view of a filling tube of an embodiment.

FIG. 2A is a side view and FIG. 2B is a front view of a filling tube according to an embodiment.

FIG. 3 is an operation explanatory view of the filling tube of the embodiment.

FIG. 4 is an operation explanatory view of the filling tube of the embodiment.

FIG. 5 is a longitudinal sectional view of an essential part of the automatic packaging machine.

[Explanation of symbols]

 1 Filling Tube 2 Main Body Tube 3 Outer Cylinder 4 Opening 5 Wire Mesh 6 Air Tube 7 Movable Inner Cylinder 8 Foreign Material Discharge Port 9 Drive Rod 10 Inner Cylinder Operating Plate 11 Foreign Material Discharge Port 12 Long Hole 13, 14 Arrow 20 Surge Bin 21 Rotary Blade Vehicle 22 Base 23 Shut-off valve 24 Weighing stand

Claims (2)

[Scope of utility model registration request] 1. In an automatic packing machine for bagging cement,
A wire mesh with a mesh through which cement passes and solid matters do not pass through the discharge port of the filling tube. An automatic cement wrapping machine characterized by being installed in a filling tube in the vicinity of. 2. The openable / closable foreign matter discharge port is a discharge port that opens when a hole formed in an inner cylinder that is axially slidably fitted in the outer cylinder and a hole provided in the outer cylinder coincide with each other. The automatic cement wrapping machine according to claim 1, wherein: