JPH0678201U - Weighing and filling mechanism of powder and grain packaging device - Google Patents

Abstract

(57) [Summary] [Purpose] Automates a series of operations for weighing and filling powder and granules into a bag to improve work efficiency. [Structure] A platform scale 9 having a load detection load cell 8 is installed on the ground, a frame 10 is provided on the platform scale 9, and a loop conveyor C4 for transporting a bag cap fixing mechanism 4 can be vertically moved by a cylinder 41 on the frame 10. To support. A guide holding frame 44 provided at the fixed portion of the loop conveyor C4 is provided with a cylinder 42 and a guide 45 for vertically moving the bellows 20 connected to the charging chute 11, and further at the fixed portion of the loop conveyor C4, a cap of the bag 14 and a hanging string. Thirteen
Cylinder for removing bag and cylinder for removing hanging string 5
1, and the measuring slat conveyor 15 is installed on the platform scale 9.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a metering and filling apparatus for a powder and granular material packaging apparatus that measures the powder and granular material such as grain, feed, cement, etc., and continuously and automatically fills the packaging bag, that is, the bag. It is related to the mechanism.

[0002]

[Prior art]

 Conventionally, this type of powder and granular material packaging device has been put to practical use, in which a weighing hopper scale is provided at the upper part of the frame, and a bag base fixing mechanism and an elevated structure with a height capable of accommodating a predetermined bag are provided at the lower part. A table structure is generally used. In addition, a slat belt conveyor for movement may be installed below.

In such a conventional method, a considerable amount of manpower is required such that the bag is attached manually and the fixing mechanism is operated by a foot switch or the like. Furthermore, after fixing the bag, the weighing start button is operated to perform automatic weighing.After weighing and filling, the cap fixing mechanism is removed by the operating button, and the slat belt conveyor is operated to move the filled bag under the weighing platform. I am trying to carry it out from.

[0004]

[Problems to be solved by the device]

 In this conventional method, the process from the metering and filling of the powder and granules to the carry-out is partially automated, but all the decisions for the next step are made by humans, and each device has 3 It is necessary to allocate about 4 full-time workers, so labor saving is still insufficient, and work efficiency is not very good.

An object of the present invention is to measure powders and granules into a bag, and to carry out the operation of carrying out to the next step automatically and continuously. It is to provide a weighing and filling mechanism for a body packaging device.

[0006]

[Means for Solving the Problems]

 A weighing and filling mechanism of a powder and granular material packaging device according to the present invention for achieving the above-mentioned object is provided with a platform scale having a load detection load cell, and a mouthpiece of a bag for packaging the powdery system in a frame installed on the platform scale. A loop conveyor that transports the fixing mechanism is hung so that it can move up and down, and a mechanism that moves the powder particle charging chute up and down is provided at the fixed portion of the loop conveyor, and a mechanism that releases the mouthpiece fixing mechanism and the bag hanging string. A weighing slat conveyor for placing the bag containing the powder and granules on the platform scale, and filling the bag with the powder and granules in a predetermined weight, the bag is fixed to the mouthpiece fixing mechanism. It is characterized in that the bag is carried out after being released from the bag and by removing the hanging cord.

[0007]

[Action]

 The weighing / filling mechanism of the powder / granule packaging device having the above-mentioned configuration measures and fills the powder / granule to be injected into the empty bag, and the work of releasing the mouthpiece and the hanging strap of the bag filled with the powder / granule. , And the operation of transferring the bag to the next process is automatically and continuously performed.

[0008]

【Example】

 The present invention will be described in detail with reference to the illustrated embodiment. First, an outline of a powder or granular material packaging device to which the weighing and filling mechanism of the present invention is applied will be described. FIG. 1 is a plan view showing the powder and granular material packaging device, and FIG. 2 is a front view of a part thereof.

In FIG. 1 and FIG. 2, reference numeral 1 denotes an entire suspension frame that forms a rectangular gate type frame, on which a transport mechanism divided into required blocks, that is, six loop conveyors C1 to C1 in this embodiment. C6 is installed, and a rectangular endless transportation line is configured by these loop conveyors C1 to C6, and turn frame type direction changing device 2 is installed at each corner. Each of the loop conveyors C1 to C6 has an endless structure and has an independent drive mechanism 3.

On the loop conveyors C1 to C6, an appropriate number of ferrule fixing mechanisms 4 that are circulated and conveyed by a conveying line are suspended, and these ferrule fixing mechanisms 4 can be freely moved in the operating direction of the loop conveyor. Yes, and at each corner, the direction change mechanism 2 changes the direction to a right angle. An empty bag setting mechanism 5 for taking in an empty bag B is provided in the middle of the loop conveyor C1. In this empty bag setting mechanism 5, the empty bag B is manually set in the mouthpiece fixing mechanism 4, temporarily tightened, and after the hanging string is hung, it is finally tightened, and then the mouthpiece fixing mechanism 4 is moved to the next step. Transfer.

Further, a bag inflating mechanism 6 is installed on the loop conveyor C3, and an automatic weighing and filling mechanism 7 is arranged at the loop conveyor C4. The bag inflating mechanism 6 blows air into the empty bag B set in the mouthpiece fixing mechanism 4 to inflate it to create a state in which powder particles can be easily filled immediately before weighing.

By providing the bag inflating mechanism 6, the weighing work and the inflating work can be performed simultaneously in parallel, so that the processing capacity of the system is higher than that in the case of inflating the bag on the conventional weighing machine. Greatly improved. In the automatic weighing and filling mechanism 7, the work of weighing and filling the powdery particles into the empty bag B set in the mouthpiece fixing mechanism 4 is automatically performed. The automatic weighing and filling mechanism 7 has a platform 9 having a load cell 8 for load detection installed on the ground, and a frame 10 installed on the platform 9. On the frame 10, a charging chute 11, various lifting devices 12, and a cap fixing mechanism 4 on the loop conveyor C4, which are necessary for measurement control, are arranged. A screw feeder 13, a cut damper 14, and a bellows 15 for supplying powder particles are connected to the charging chute 11.

Incidentally, in the conventional device, the weighing equipment is usually placed on the upper part of the bag, but in the present embodiment, by providing this on the ground, the height of the equipment is remarkably higher than that of the conventional equipment. It can be lowered and the system is economical.

In the automatic weighing and filling mechanism 7, when the load of the granular material filled in the bag B reaches a predetermined set value, the cap of the bag B and the hanging string C are automatically released. Subsequently, by driving the weighing slat conveyor 16 and the carry-out slat conveyor 17, the bag B filled with a predetermined amount of powder and granules is carried out and transferred to the next step, for example, a reversing mechanism. On the other hand, the mouthpiece fixing mechanism 4 released from the bag B is automatically transferred to the empty bag setting mechanism 5 by the loop conveyors C5 and C6.

All of the above operations are automatically processed except for the operation of suspending the empty bag B, and their control, automatic weighing and filling, etc. are controlled by a control circuit (not shown).

Next, specific examples of the mechanism or device of each part will be described with reference to FIG. FIG. 3 shows an example of the structure of the mouthpiece fixing mechanism 4 shown in FIG. 1. The mouthpiece fixing base plate 22 is placed on the loop conveyor 21 corresponding to any of the loop conveyors C1 to C6 of FIG. A cylindrical outer cylinder 23 and an inner cylinder 24, which serve as an inlet for powder particles, are attached to the lower side of the die fixing base plate 22. A fixed band 25, a spring 26 for pressing the fixed band 25, and an operation lever 27 are provided on the outer cylinder 23. Here, since the fixed band 25 is pulled by the spring 26, it is always in the closed position, that is, the position shown by the solid line. However, when the operating lever 27 is pushed in the direction of the arrow, the fulcrum 28 and the spring 26 make the dotted line 25 '. Rotate to the open position shown. By this mechanism, the bag B is attached to the outer cylinder 23 and automatically released.

When hanging the empty bag B, the operation lever 27 is pushed in the direction of the arrow to open the fixed band 25, the mouth of the empty bag B is set around the outer cylinder 23, and then the operation lever 27 is set. When released, the empty bag B is fixed around the outer cylinder 23 by the fixing band 25. An arm 29 is projected in a horizontal direction from the outer cylinder 23, and a hanging string cam 30, a string hook 31 and a spring 32 constituting an automatic hanging string releasing mechanism are attached to the arm 29. Both the hanging strap cam 30 and the hanging hook 31 are rotatably supported by a pivot 33, and are normally pulled by a spring 32 so that the hanging hook C of the bag B is hooked as shown by the solid line. It is in a state.

In order to remove the hanging strap C, the hanging strap cam 30 is pushed in the direction of the arrow, and the hanging hook 31 rotates to the position of the dotted line 31 ', so that the hanging strap C is automatically removed. When the hanging cord cam 30 is released, the cord hook 31 returns to its original position by the spring 32.

As described above, in the mouthpiece fixing mechanism 4, only the empty bag B is attached manually, but the removal can be automatically performed. Of course, the operation of the operation lever 27 and the hanging strap cam 30 is controlled by the control circuit shown in FIG.

FIG. 4 shows details of the bag inflating mechanism 6 shown in FIG. A blower 35, which is an air source for inflating a bag, is installed on a frame 34 supported by the overall suspension frame 1 of FIG. 1, and is connected to a flange 37 via a bellows type air duct 36. The air duct 36 can be moved up and down by a cylinder 38, and the flange 37 at the lower end thereof is in close contact with the base fixing base plate 22 stopped by the stopper cam 39. The stopper cam 39 is driven by the stopper cylinder 40 from the solid line position to the dotted line position.

The flange 37 is provided with a seal member 37a for preventing air leakage when air is blown in, and the flange 37 is brought into close contact with the fixed base plate 22 of the base via the seal member 37a. When the stopper cam 39 stops the fixed base plate 22 at a predetermined position by a detection means such as a photoelectric switch, the cylinder 38 is automatically operated to bring the flange 37 into close contact with the fixed base plate 22, and The blower 35 is operated and air is blown into the bag B, and the bag B is inflated automatically. After a predetermined time, the blower 35 is stopped, and if it is confirmed that the preceding bag B has been weighed and filled with the powdered particles and carried out, the stopper cylinder 40 operates to open the stopper cam 39 in the opening direction. The mouthpiece fixing mechanism 4, which is rotated to the position indicated by the dotted line and carries the inflated bag B, is transferred to the next automatic weighing and filling mechanism 7 by the loop conveyors C3 and C4. All of these operations are also controlled by the control circuit.

5 to 8 show details of the automatic weighing and filling machine 7 installed in the loop conveyor C4 portion of FIG. 1, and FIGS. 5 and 6 are front and side views of the filling section, and FIG. FIG. 8 is an enlarged view of a part thereof, FIG. 7 shows a fixed state of the bag B, and FIG. 8 shows a released state of the bag B.

The loop conveyor C4 is vertically movable by a conveyor vertical cylinder 41, and the bellows 15 connected to the powder particle feeding chute 11 is also vertically movable by a bellows vertical cylinder 42. . The mouthpiece fixing mechanism 4 equipped with the bag B inflated by the bag inflating mechanism 6 is attached to a predetermined position on the loop conveyor C4, that is, the tip of the bellows 15 by a signal from a position detecting means such as a limit switch. It stops at a position facing the beam input chute flange 43. Here, the bellows vertical cylinder 42 is operated to bring the charging chute flange 43 into close contact with the mouthpiece fixing mechanism 4. In this case, the bellows up / down guide 45 on the guide holding frame 44 mounted on the loop conveyor C4 ensures reliable contact. A ring-shaped sealing member 46 is provided on the surface of the charging chute flange 43, and plays a role of preventing dust.

In this state, the screw feeder 13, the cut damper 14, and the charging chute 11 are in a mode in which the bag B mounted on the mouthpiece fixing mechanism 4 can be filled with the powder or granular material, and then the weighing is set by the control circuit. Control and sequence control of the entire system are performed. That is, the screw feeder 13 operates with the cut damper 14 open, and the powder or granular material in the hopper 48 is loaded into the bag B via the loading chute 11. Simultaneously with the start of the charging, the air in the bag B is sucked and collected from between the outer cylinder of the charging chute 11 and the outer cylinder 23 and the inner cylinder 24 of the cap fixing mechanism 4 connected to the inner cylinder by the dust collecting port 49. . The load of the granular material put into the bag B is detected by the load cell 8 of the platform scale 9 through the frame 10.

Then, in order to stabilize the bag B on the platform scale 9, the conveyor up / down cylinder 41 is operated by a size determined by the type of the bag B by the control circuit. At this time, the conveyor up / down guide 41 mounted on the frame 10 allows the conveyor up / down cylinder 41 to stably move up and down, and the bag B is set on the weighing slat conveyor 16. .

When the measured value reaches the set value, the screw feeder 13 is stopped by the control circuit, the cut damper 14 is closed, and the supply of the powdery particles is stopped. Then, by operating the hanging string removing cylinder 51 and pushing the hanging string cam 30 shown in FIG. 3, the hanging hook 31 is rotated and the hanging string C is automatically removed. Similarly, by operating the bag removing cylinder 52 as shown in FIGS. 7 and 8 and pushing the operation lever 27 shown in FIG. 3 in the direction of the arrow, the fixing band 25 is opened and the bag B is automatically fixed. To cancel.

When the hanging string C and the bag B are released from the mouthpiece fixing mechanism 4, the conveyor vertical cylinder 41 operates to return the loop conveyor C4 to a predetermined position, that is, the level of the loop conveyors C3, C5, The mouthpiece fixing mechanism 4 released from the bag B is sent back to the suspending portion at the intermediate position of the loop conveyor C1 in FIG. 1 through the loop conveyor C4 driven by the driving mechanism 3a and the loop conveyors C5 and C6, and then On the loop conveyor C4, the bag fixing mechanism 4 in which the next bag B is set is sent from the bag inflating mechanism 6 of FIG. Next, the weighing slat conveyor 16 and the carry-out slat conveyor 17 shown in FIG. 2 operate to automatically carry out the bag B filled with the powder and granules to the next step.

9, 10, and 11 are a plan view, a front view, and a side view showing details of the direction changing mechanism 2. The driving direction of the loop conveyor 61 of, for example, C1 in the previous stage and the loop conveyor 62 of C2 in the next stage, for example, are actually at right angles. At the corner between them, a rotary shaft 63 penetrating the whole suspension frame 1 is attached via a bearing 64, and a rotary part support plate 65 is held at the lower end of the rotary shaft 63. A turn cylinder 66 is installed on the whole suspension frame 1, and a rotary shaft 63 and a rotary portion support plate 65 are rotated by 90 degrees via an arm 67 connected to the rod. Incidentally, 68 is a stopper that regulates the rotation range.

As shown in FIG. 11, roller mounting members 69 are provided on both sides of the rotating portion support plate 65, and a large number of rollers 70 are mounted inside thereof. As shown in FIG. 10, the roller mounting member 69 and the roller 70 are installed in a slightly inclined state so as to gradually descend in the traveling direction, and a stopper 71 is arranged at the end thereof.

When the ferrule fixing base plate 22 conveyed from the loop conveyer 61 at the preceding stage rides on the roller 70, it naturally moves in the tilt direction and is stopped by the stopper 71 at the end. The stopper 71 is rotated by its driving cylinder 72 from a solid line position to a dotted line position 71 '. When it is detected that the mouthpiece fixing base plate 22 has hit the stopper 71, the turn cylinder 66 is operated until it is stopped by the stopper 68, and as a result, the rotating shaft 63 and the rotating portion support plate 65 rotate 90 degrees. To do.

Therefore, if the level of the end of the roller mounting member 69 is adjusted to the level of the loop conveyor 62 of the next stage, the driving cylinder 72 is operated and the stopper 71 is removed, whereby the base for fixing the base 22 is fixed. Are naturally transferred to the next-stage loop conveyor 62. In this way, the base fixing mechanism 4 can be easily turned 90 degrees.

In the above-described embodiment, the case where the six loop conveyors C1 to C6 are used as the transport mechanism of the mouthpiece fixing mechanism 4 is shown, but this is merely an example and other than the loop conveyor. A transport mechanism may be used. Also, the transport line is not necessarily square.

[0033]

[Effect of device]

 As described above, the measuring and filling mechanism of the powder and granular material packaging device according to the present invention is used for measuring and filling the powder and granular material in the empty bag, and the mouthpiece and the hanging string of the bag filled with the powder and granular material. Since the work of removing the bag and the work of transferring the bag to the next process can be performed automatically and stably, the work efficiency is improved and the labor can be saved.

[Brief description of drawings]

FIG. 1 is a plan view of a powder or granular material packaging device using a weighing and filling mechanism.

FIG. 2 is a front view.

FIG. 3 is a configuration diagram of a base fixing mechanism.

FIG. 4 is a configuration diagram of a bag inflating mechanism.

FIG. 5 is a front view of an automatic weighing and filling mechanism.

FIG. 6 is a side view of the automatic weighing and filling mechanism.

FIG. 7 is a partially enlarged view of the automatic weighing and filling mechanism showing a fixed state of the bag.

FIG. 8 is a partially enlarged view of the automatic weighing and filling mechanism showing a bag released state.

FIG. 9 is a plan view of the direction changing mechanism.

FIG. 10 is a front view of the direction changing mechanism.

FIG. 11 is a side view of the turning mechanism.

[Explanation of symbols]

 1 Whole Suspension Stand 2 Direction Change Mechanism 3 Drive Mechanism 4 Base Fixing Mechanism 5 Empty Bag Setting Mechanism 6 Bag Inflating Mechanism 7 Weighing and Filling Mechanism 8 Load Cell 9 Units 10 Frame 11 Loading Chute 13 Screw Feeder 14 Cut Damper 15 Bellows 16 Weighing Slat Conveyor 25 Fixed band B Bag C Hanging string

Continuation of the front page (72) Creator Hisao Seki 2-13-46 South East Coast of Chigasaki City, Kanagawa Prefecture (72) Creator Kikuo Yoshida 4-3154 Onocho, Ichikawa City, Chiba Prefecture

Claims (1)

[Scope of utility model registration request] 1. A loop conveyor having a load detection load cell is provided, and a loop conveyor for transporting a cap fixing mechanism of a bag for filling powder particles into a frame installed on the platform balance is movably hung up and down. A mechanism for vertically moving the charging chute of the powder and granules is provided in the fixing part of the, a mechanism for releasing the cap fixing mechanism and a mechanism for removing the hanging string of the bag are installed, and the powder and granules are stored on the platform scale. A measuring slat conveyor for mounting the bag is installed, and when the bag is loaded with a predetermined weight of powder or granular material, the bag is released from the cap fixing mechanism and the hanging string is removed, and the bag is carried out. Weighing and filling mechanism for powder and granular packaging equipment.