JPS5843301B2 - Storage bag welding and sealing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a welding and sealing device for storage bags, and an object thereof is to ensure and rationally process storage bags after welding and sealing.

For this reason, the following technical measures were taken.

That is, the storage bag 4 is suspended so that it can be continuously fed out with the bag mouth 3 always facing the outlet 2 of the storage tank 1, and the storage bag 4 is placed above the suspended storage bag 4. A welding device 5 is provided, which is configured to weld and seal the three parts of the bag opening of 4 and cut off the upper side of the sealed part to separate the suspended storage bag from the continuous empty storage bag 4a, and below the welding device 5,
A transfer device 6 is provided to receive and support the bottom of the storage bag 4 and to transfer the storage bag 4 filled with material. The structure includes a body 7.

The present invention will be specifically described below based on an embodiment shown in the drawings.

Storage tank 1
The material supply port 8 is provided at the top and the material discharge port 9 is provided at the bottom.

This storage tank 1 (J) is provided on a vertical shaft 11 rotatably provided on the case frame 10, and there are a plurality of tanks (two in the example shown) in the front and back (left and right in FIG. 1) with the vertical shaft 11 in between. Installed in parallel,
It is configured to be forcedly rotatable about the vertical axis 11.

In this rotation configuration, in the example shown, the motor 12 has a boot IJ-
13 and a large-diameter pulley 14 provided between the two storage tanks 1, 1, a belt 15 is wound and tensioned between the two storage tanks 1, 1, so that both the storage tanks 1, 1 are forcibly rotated by the drive of the motor 12. There is.

The delivery port 2 is for feeding the material from the storage tank 1 into the storage bag 4, which will be described later.The material discharge port 9 of the storage tank 1 is provided only on the bottom of the case frame 10 on the front side (right side in FIG. 1). The hole is sized to approximately match the size of the hole.

Storage bag 4 (1) Made of a thin synthetic resin material such as vinyl, it is made into a belt-shaped cylinder and is bent vertically in a zigzag pattern alternately so that the inner surface contacts the inner surface and the outer surface contacts each other. The bag is held in a bag holder 16 provided at the outlet 2, and is provided so that it can be continuously fed out by pulling an iron rod from below.

The welded parts 17 and 18, which are formed slightly wider than the left and right width of the bag opening 3 of the storage bag 4, are placed opposite each other in the front and back (left and right in FIG. 1) with the bag opening 3 of the storage bag 4 in between. The arms 20 and 21 and the rack mechanism 22 are arranged so that they come into contact with each other and move away from each other through the arms 20 and 21 and the rack mechanism 22 as the cylinder 19 moves back and forth.

The welding parts 17, 18Lt have a bag bottom seal part a that welds and seals the bottom part of the bag 4 on the upper side, and a bag mouth seal part that welds and seals the bag opening 3 part on the lower side. It is constructed by providing a thermal fusing part C for fusing and cutting the continuous bag 4 between b.

23 (1 rigid switch), which is configured to be interlocked to control the stop of the motor 12, that is, the stop of rotation of the storage tanks 1, 1 when turned ON.

24G! , with the pressing tool provided on the storage tanks 1, 1,
1 comes to a predetermined position, that is, when the material discharge port 9 of the storage tank 1 and the delivery port 2 match, the limit switch 23 is turned on.

The transfer device 6 is composed of a belt conveyor that is rotatable in the direction of arrow A and whose transfer surface serves as a bag bottom receiving surface of the hanging storage bag 4.

25G1 Storage bag guide and holder, which is fixed to the case frame 10, regulates and guides the empty storage bag 4 that is automatically fed out downward due to the weight of the material, and also suspends the storage bag 4 when storing the material. This is to stably hold the hanging storage bag 4 by restricting it from swinging back and forth, left and right, and its configuration is as follows:
It is formed into a cylindrical shape to cover the periphery of the hanging storage bag 4, and is provided with a guide plate C1 at the top and a guide plate 26 which is wide enough to extend upward.
A notch 27 is formed in the front wall surface of the transfer device 6 on the side A in the transfer direction so that the held hanging storage bag 4 can be easily removed from the guide/holder 25.

Resistor 7 (in the example shown in FIG. 11, it is composed of a resistance rod provided in the cutout 27 so as to face the front surface of the storage bag 4.

In addition, this resistance rod may be comprised of a roller that can rotate on its own axis.

The motor 12, welding device 5, and transfer device 6 described above are configured to be interlocked to perform related operations by a timing mechanism (not shown) such as a timer or a limit switch.

28c1 is a material supply hole provided in the upper part of the rear case frame 9.

Next, the effect on the upper side will be described.

First, the empty storage bag 4a is pulled out and the bottom of the bag is formed using the welding device 5.

Next, when the storage tank 1 at the rear side is filled with material, the motor 12 is driven, the storage tank 1.1 is rotated via the ladle 15, and when the limit switch 23 is turned "ON" with the pressing tool 24. Storage tank 1, 1! f The front and back are reversed and the rotation stops.

At the same time, the material in the storage tank 1 is transferred to the outlet 9 and the outlet 2.
It is supplied into the storage bag 4 through the storage bag 4.

Storage bag 4 (1, storage bag guide and holder 2 depending on the weight of the material)
The bag descends while being regulated and guided by the bag 5, and the bottom of the bag is stopped by the transfer surface of the transfer device 6, so that the bag assumes a suspended position and receives material supply.

At this time, the hanging accommodation bag 4c1 and the accommodation bag guide and holder 25 restrict it from the front, back, left and right directions, so that it is stably held without being disturbed even by the influence of wind, etc., and the material can be reliably fed.

When the supply of material to the suspension storage bag 4 is finished, the heat welding part 17.1
8 operates to clamp the bag opening 3 from both front and back sides and weld and seal it, and also forms the bag bottom of the next empty bag 4a, and at the same time seals the gap between the bag bottom and the sealed bag opening 3. thermally fused,
Only the material-filled storage bag is separated from the empty bag 4a.

Thereafter, the heat welding parts 17, 18 move away from each other, and the transfer device 6 rotates to transfer the material-filled storage bag to a predetermined location.

At this time, as the bag bottom of the material-filled storage bag 4 is transferred, it comes into contact with the resistor 7, and the bag opening 3 rotates in a direction 41 opposite to the transfer direction A, using the resistor 7 as a fulcrum. For example, the thermal welding between the bottom of the empty bag 4 and the sealed bag opening 3 may be incomplete, resulting in the bag 4 falling sideways (see Figure 4).
, 4a are connected, by moving the bag opening 3 in the opposite direction of the arrow A, the bottom of the empty bag 4 and the sealed bag opening 3 are forcibly pulled apart, resulting in a dual-bottom bag 4, 4a can be separated from each other.

In addition, since the material-filled storage bag jut is forcibly transferred by the transfer device 6, it can be easily and smoothly pulled out from the storage bag guide and holder 25 through the notch 27, and the transfer can be performed without any trouble. After that (j), since it is transferred in a sideways posture, it can be transferred stably and reliably without accidentally falling over from the transfer device 6 during transfer.

During the operation of each of the above-mentioned devices, the material is supplied into the storage tank 1 located at the rear side of the eye by external force, so that the work can be carried out efficiently.

When the operation of each device is completed and the supply of material into the storage tank 1 at the rear side is completed, the motor 12 is driven again to rotate both storage tanks 1, 1, and stop at a predetermined position. Repeat the same action.

Note that it is not necessary to operate both the heat welding parts 17 and 18 of the welding device in the front and rear directions (it is not necessary to operate both of them, and only one of the heat welding parts 17 and 18 may be operated).

In short, since the present invention is configured as described in the claims, the lower end C1 of the storage bag 4, which is continuously pulled down and cut and whose lower end is always welded, is driven as required. It is placed on the transfer device 6, which makes it easy to bring the front and rear surfaces of the storage bag 4 into contact with each other and weld them together, and also allows the storage bag 4 to be made thinner and inexpensively constructed. In addition, a storage bag 4 (1, resistor 7
Since the lower half of the transfer device 6 is pressed against the soil, when the transfer device 6 starts transferring, the force is immediately and reliably transmitted to the storage bag 4, thereby causing the soil to be cut from the storage bag 4. When something is found that is insufficient, it is instantly and forcefully torn off, and the material is accurately overturned onto the transfer device 6.

[Brief explanation of the drawing]

Drawings (1) Showing one embodiment of this invention, Fig. 1 is a side sectional view, Figs. 2 and 3 are enlarged side views, and Fig. 4 is a side sectional view showing the operating state of the main parts. In the figure, 1 is a storage tank, 2 is a material discharge port, 3 is a bag opening of a storage bag, 4 is a storage bag, 5 is a Gt welding device, 6 is a transfer device, and 7 is a resistor.

Claims (1)

[Claims] 1 Suspend the storage bag 4 so that it can be continuously fed out with the bag opening 3 always facing the outlet 2 of the storage tank 1, and attach an eye to the upper part of the suspended storage bag 4. A welding device 5 is provided, which is configured to weld and seal the bag opening 3 parts, and cut off the lower part of the bag from the continuous empty bag 4a by welding and cutting the upper part of the sealed part.
A transfer device 6 that receives and supports the bottom of the storage bag 4 and transfers the storage bag 4 filled with material is provided, and a side surface that engages with the center of the Ct storage bag 4 is provided on the delivery side of the storage bag 4. A storage bag welding and sealing device characterized by being provided with a resistor 7 in the direction.