JPH0440241B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention mainly focuses on converting compositions that are solid or semi-liquid at room temperature (hereinafter referred to as high-consistency compositions), such as asphalt, tar, and pits, into highly thermoplastic materials. The present invention relates to a bag filling method for filling packaging bags made of a film of molecular material, and an apparatus therefor.

For example, asphalt has conventionally been packed and transported in drums, but each can weighs about 200 kg, making it inconvenient to handle and requiring time and effort to dispose of the drums after use. For this reason, a method of filling a paper bag or the like has been proposed (for example, Japanese Patent Publication No. 41-220277), but the disadvantage is that the paper bag must be removed before use, which is time-consuming.

The present inventors injected molten asphalt into a synthetic resin packaging bag while cooling the outer surface of the bag,
A method was proposed in which the paper bag was placed in water immediately after injection to cool it (Japanese Patent Application No. 222626/1982). When using this method, even if the temperature of the molten asphalt to be injected exceeds the softening point of the packaging bag, the bag can be filled without damaging the bag. Further, when using asphalt, the packaging bag is heated and melted together with the asphalt to be stored and mixed with the asphalt, which has the advantage that there is no need to process the packaging bag.

The present invention further relates to an improvement on this, in which the packaging bag is filled with the high-consistency composition in a cooling water tank, which simplifies the apparatus and allows efficient filling of the predetermined high-consistency composition without tearing the bag. The purpose of the present invention is to provide a bagging method and device.

That is, the first invention relates to a method of bagging the above-mentioned high-consistency composition, which comprises: clamping a packaging bag with a gripping means;
Filling the packaging bag with the high consistency composition and sealing the opening are performed sequentially, and then the packaging bag is placed in a cooling water tank to cool it, and when filling the high consistency composition, injection is performed. Each time the amount increases, the high-consistency composition is lowered one by one, so that the upper surface of the high-consistency composition always injected is below the level of the cooling water, and the outer periphery of the bag to be filled is cooled by the cooling water.

A second invention relates to an apparatus for carrying out the above method, which comprises a packaging bag gripping means rotatably provided on the cooling water tank, a supply means for supplying the packaging bag to the gripping means, and a high consistency A filling means for injecting the composition into the gripped bag, a sealing means for the opening of the filled packaging bag, and a release means for releasing the packaging bag from the gripping means are sequentially arranged corresponding to the gripping means. , causing the gripping means to grip the packaging bag, sequentially filling the packaging bag with the high-consistency composition and sealing the opening, and operating each means in a related manner so as to cause the filled packaging bag to fall into the water tank by the release means. In addition, the gripping means is provided with a packaging bag lifting member that descends sequentially each time the amount of high-consistency composition injected increases, and causes the upper surface of the high-consistency composition constantly injected to settle below the surface of the cooling water. It is something.

As a result, when filling a packaging bag, the packaging bag is effectively cooled by being placed in straight cooling water, and no external force is applied to the packaging bag, so it can expand freely. There is no risk of the bag breaking, and the temperature can be lowered to the specified temperature.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

In the figure, the bagging device 1 has a space 3 in the center.
A fixed cylindrical shaft 4 is vertically installed in the space 3, and a rotary cylinder 6 is rotatably fitted onto the outer periphery of the fixed cylindrical shaft 4 via a bearing member 5. Reference numeral 7 denotes a drive gear attached to the rotary cylinder 6, which is rotated intermittently (60 degrees in the illustrated example) by an appropriate drive means (not shown).

The rotary tube 6 is equipped with a packaging bag gripping means 8, which is fitted into a key 9 attached to the rotary tube 6 in the vertical direction, and is movable up and down along the key 9, and together with the rotary tube 6. Rotated.

The bag filling device 1 further includes a packaging bag supplying means 10 , a filling means 11 for high consistency composition, a sealing means 12 , and a releasing means 1 facing the fixed cylinder 4 .
3 are arranged opposite each other, and these are arranged at approximately equal intervals. However, the illustrated example shows an example in which two of each means, such as the packaging bag gripping means 8, are provided, and the sealing means 12 and the releasing means 13 are provided at the same location.

The packaging bag gripping means 10 includes a gripping arm 15 and an elevating member 16 for the arm 15.
Reference numeral 5 consists of a base block portion 17 that is fitted with a key 9 attached to the rotating shaft 6, gripping mechanisms 18, 18 that grip both sides of the packaging bag A, and a connecting arm 19 that connects both.

The base block portion 17 is formed with a dovetail groove 17a into which the engaging pawl 28 of the elevating member 16 is inserted. However, the base block portion 17 and the elevating member 16 may be directly fastened together using bolts or the like. The gripping mechanisms 18 and 19 form a left and right pair and have a length that grips approximately the entire length of the side of the packaging bag A, and each grips a fixed plate 20 and a rotating shaft 21 supported on one side of the fixed plate. The rotating plate 22 is formed into a dovetail shape by the attached rotating plate 22, and the rotating plate 22 is attached to the rotating shaft 2.
1 is biased toward the fixed plate 20 by a spring (not shown) attached to the fixing plate 20 . Furthermore, as will be described later, cutouts 23 for sealing the packaging bag A with the sealing means 12 are formed at appropriate positions above the fixed plate 20 and the rotating plate 22, and at appropriate positions on the rotating plate 22, Arm 24 is attached.

As will be described later, each of the left and right gripping mechanisms 18 is preferably movable slightly inward in order to facilitate the opening of the packaging bag A, and a sliding base 25 is attached to the tip of the connecting arm 19. , the upper and lower ends of the gripping mechanism 18 are welded to the sliding tube 26 that is slidably supported by the sliding table 25, and a spring 27 constantly urges the sliding tube 26 and the gripping mechanism 18 outward. The gripping mechanism 18 is then oriented to the position shown by the solid line in FIG.
It is moved inward against the spring 27.

In addition, the packaging bag gripping parts 20a, 20a (FIG. 3) at the tips of the fixed plate 20 and the rotating plate 22, respectively, are as follows:
In order to ensure reliable gripping, it is preferable to attach a material with a large friction coefficient (for example, rubber) or to provide vertical grooves or the like. In addition, the connecting arm 19 makes it possible to submerge the packaging bag A held by the gripping mechanism 18 into the cooling water W of the water tank 2.
The base block portion 17 and the gripping mechanism 18 are attached with a step in the vertical direction. The elevating member 16 includes an engaging pawl 18 that is fitted into a dovetail groove 17a formed in the base block portion 17, and an elevating cylinder 29, and the engaging pawl 28 is attached to the tip of a piston rod 29a. The lifting cylinder 29 is attached to a rotating table 30 provided horizontally on the upper part of the rotating cylinder 6.

As shown in FIG. 5, the packaging bag supply means 8 is a cylindrical packaging bag material Aa (preferably a mixed resin of ethylene/vinyl acetate copolymer and low density polyethylene) having a synthetic resin wound into a drum shape. (manufactured by the inflation method) feeding mechanism 3
2, a cutting sealing member 33 that cuts the fed material Aa into a predetermined size and seals the bottom to form a packaging bag A of a predetermined length, and a cut packaging bag A.
a take-out device 3 for passing the material to the gripping mechanism 18;
4, and an opening member 35 for opening the gripping mechanism 18. Cutting seal member 33
It consists of a cutting mechanism 36 and a sealing mechanism 37 which are provided in close proximity to each other, and the sealing mechanism 37 is suitably a heat sealing means in which a pair of heating bars 38 and 38 are used to weld the cutting mechanism 36 and the sealing mechanism 37 under pressure. Further, the feeding mechanism 32 is equipped with a suitable length measuring means (not shown), and is stopped every time it is fed out for a predetermined length, and the cutting and sealing member 33 performs cutting and bottom sealing.

The take-out device 34 has a main shaft 4 rotatably supported by a bracket (not shown) provided at a proper location.
A support stand 41 fixed at 0, and a drive arm 42
The support base 41 is equipped with a lifting cylinder 43.
However, the main shaft 40 is attached to the tip of the drive arm 42 at 90°.
A piston rod 44a of an air cylinder 44 for rotation is connected to the piston rod 44a.
By advancing and retracting a, the lifting cylinder 43 moves the main shaft 40 between the vertical position shown by the solid line and the horizontal position shown by the diagonal line.
It rotates around and moves back and forth. A suction device 45 having a plurality of suction cups 45a is attached to the tip of the piston rod 43a of this lifting cylinder 43. The opening member 35 is made up of a pair of opening cylinders 46, 46, which are installed opposite to the left and right rotating arms 24, 24 of the gripping mechanism 18, and when the packaging bag A is supplied by the take-out device 34, the opening cylinders 46, the piston rod 46a is extended, the rotating plate 22 is rotated via the rotating arm 24, and the gripping mechanism 16 is opened.

The filling means 11 includes a filling valve 50 for injecting the high-consistency composition, a suction expanding member 51 for expanding the opening of the packaging bag A, and a suction expanding member 51 for holding the expanded packaging bag A in the expanded state. An air blowing member 52 is provided, and these are attached to a mounting board 54 provided on the upper part of the aquarium 2. The filling valve 50 allows the injection nozzle to be raised and lowered with respect to the packaging bag A, and also prevents the discharged material from hanging down in the form of a thread when the nozzle is blocked, which may impede the sealing of the opening or stain the vicinity. As shown in FIG. 7, the filling valve 50 is designed to prevent
A high-consistency composition distribution passage 55 is provided in a cylindrical casing 55.
a, into which the nozzle 56 is fitted so as to be movable up and down. A heat retention mechanism 55b is attached to the casing 55, and the heat retention mechanism 55b is made of, for example, a linear nichrome wire wound around or a planar heating element. 55c is a high consistency composition receiving port;
The molten high temperature high consistency composition is pre-cooled by CT
It is pre-cooled to the lowest possible temperature without impairing the fluidity that can be poured into the metering dispenser CS.
Accordingly, a predetermined amount of water is sent to the receiving port 55c. These pre-cooling device CT and metering feed device CS can have an appropriate structure.

The nozzle 56 includes a nozzle cylinder body 57 having a discharge port 58 at the lower end, and a valve body 5 inserted into the cylinder body 57.
9 as a main body, and the nozzle cylinder body 57 has a communication hole 57a that communicates the circulation passage 5a with the inside of the cylinder body 57.
is bored and connected to the piston rod 60a of the lifting cylinder 60 attached to the housing 55,
The nozzle 56 is raised and lowered by the operation of the cylinder 60. Note that the cylinders 60 are provided in left and right pairs to ensure smooth operation. Valve body 59
is a support tube 61 inserted into the nozzle cylinder body 57
and a valve seat 57 attached to the lower end of the support tube 61 and formed around the discharge port 58 of the nozzle cylinder body 57.
It consists of a valve main body 62 that comes into contact with b. Further, a cylindrical member 63 is attached to the upper part of the housing 55, and an air chamber 64 is formed between the cylindrical member 63 and the support tube 61. The support pipe 61 is equipped with a valve member 65 that divides the air chamber 64 into upper and lower parts, and a biasing spring 66 is provided at the upper part of the valve member.
is urged downward and presses the valve main body 62 against the valve seat 57b.

A pressure air introduction pipe 6 is provided below the cylindrical member 63.
7 is connected, and by supplying pressurized air to the air chamber 64, the valve body 59 rises together with the valve member 65 against the biasing spring 66, and the valve seat 5 is attached to the valve main body 62.
The high consistency composition supplied away from 7b is discharged from the discharge port 58. 68 is a switching valve provided in a pressurized air supply circuit 69 connected to the introduction pipe 67. The filling valve 50 is further provided with thread cutting means 70 in order to prevent the high consistency composition from hanging down when the valve is closed, as described above. This thread trimming means 70 constantly blows out pressurized air from the discharge port 58, thereby preventing the above-mentioned drooping.
1, and a support pipe 6 connected to the air jet hole 71.
The main body is an air supply pipe 72 that is inserted into the air supply pipe 1, and the air supply pipe 72 is provided with a connection mechanism 73 that is connected to an aerobic pressurized air supply source (not shown). In this case, it is preferable that the air pressure ejected from the air ejection hole 71 is relatively low, and according to experimental results, approximately 0.5 kg per square centimeter is appropriate. There is a risk that it will be blown away in all directions. When the discharge port 58 is closed by this slightly ejected pressurized air,
The high-consistency composition that adheres to and hangs down near the discharge port 58 is cooled, hardens, or loses its fluidity, and is blown off by the ejected air pressure. Note that the ejection of the pressurized air may be stopped at all times and may be ejected only when the valve is closed.

In the figure, 74 is a sealing member for preventing liquid leakage.
As shown in FIG. 2, the suction and expansion member 51 is disposed in front and back, sandwiching the packaging bag A held by the holding mechanisms 18, 18, and has a suction cup 75 and a suction cup 75 that suck the packaging bag A, respectively. It consists of an actuating cylinder 76 that moves the motor back and forth.

Further, as shown in FIG. 8, the air blowing member 52 holds a pair of lifting nozzles 56 of the filling valve 50 and is arranged in the left-right direction, that is, in the longitudinal direction of the packaging bag A held by the gripping mechanisms 18, 18. It is composed of air blowing pipes 80, 80, cylinders 81, 81 for raising and lowering the blowing pipes, and a connecting bar 82 connecting the cylinders 81, 81 and the air blowing pipes 80, 80, and the connecting bar 82 is filled with air. A through hole 83 of the valve 50 is bored. Although this embodiment shows a structure in which the air blowing pipes 80, 80 can be raised and lowered separately from the lifting nozzle 56, in some cases, the air blowing pipes 80, 80 may be attached to both sides of the tip of the lifting nozzle 56. , both may be raised and lowered at the same time. Next, the sealing means 12 heat-seals the opening of the packaging bag A filled with the high consistency composition, and as shown in FIG. 87,8
7, and protrusions 87a, 87a are provided on the front surface of each of the heating bars in the longitudinal direction. Each heating bar 87, 87 is connected to a piston rod 88a, 88a of a reciprocating cylinder 88, 88.
The guide blocks 89, 89 are connected to the guide blocks 89, 89. Reference numeral 90 denotes a track that guides the guide blocks 89, 89. The reciprocating cylinders 88, 88 and the tracks 90, 90 are attached to a lifting table 91, and the lifting table 91 is raised and lowered by a lifting cylinder 92. Reference numeral 93 designates a guide bar for guiding the lifting and lowering of the lifting table 91, and 94 represents a fixing base for attaching the lifting cylinder 92.

The opening means 13 is provided at the same location as the sealing means 12, as shown in FIG.
It consists of a pair of opening cylinders 95, 95 that are installed opposite to the rotating arms 24, 24 of 8, 18, respectively, and its structure and operating procedure are similar to the opening cylinder 46 of the packaging bag supply means 10. They are the same, and their explanation will be omitted.

In the above structure, the packaging bag gripping means 8 is first disposed opposite to the packaging bag supplying means 10, and the gripping mechanisms 18, 18 are stopped at a receiving position above the water tank 1. In this state, first, the packaging mechanism 18, 1
The rotating plates 22, 22 of 8 are rotated by the operation of the opening cylinders 46, 46, and the clamping mechanism 1
8 and 18 are opened as shown by the chain lines in FIG. 3b. Next, in the packaging bag supply means 10, the packaging bag material Aa is fed out by a predetermined amount by the feeding mechanism 32, cut and sealed at the bottom by the cutting seal member 33, and a predetermined packaging bag A is formed. The gripping mechanism 1 is attracted by the suction devices 45 of 34 and is maintained in a vertical state and facing each other.
8,18. The gripping mechanisms 18, 18 are connected to the piston rods 46 of the opening cylinders 46, 46.
By retracting a and 46a, the rotating plate 2
2 and 22 are rotated by a spring (not shown), cooperate with the fixing plate 20 to clamp the packaging bag A, and are rotated to reach the position of the filling means 11. In the filling means 11, as shown in FIGS. 2 and 11, the opening of the packaging bag A is first expanded by the suction expansion member 51 (FIG. 11a), and then the air blowing member 52 is expanded.
The air blowing pipes 80, 80 are lowered and inserted into the packaging bag A (FIG. 2(b)), blowing pressurized air to maintain the packaging bag A in an inflated state, and the suction expansion member 51 is opened. Then, the gripping arm 15 is lowered by operating the lifting member 16 (the air blowing pipe 8
0 is also lowered in the same way) The lower part of packaging bag A is shown in Figure c.
Insert into the cooling water W as shown. In this case, when the entire packaging bag A is submerged in water, the bag is compressed and narrowed by the water pressure, making it impossible to smoothly fill the bag to a predetermined amount.

On the other hand, the molten high-temperature, high-consistency composition is sent to a pre-cooling device CT by an appropriate means, cooled to a low temperature that maintains an injectable viscosity, and sent to a quantitative delivery device CS.
A predetermined amount is supplied to the filling valve 50 by the CS. The nozzle 56 of the filling valve 50 is lowered and inserted into the packaging bag A, and the high consistency composition B is discharged toward the bottom of the packaging bag A (FIG. C). Gripping arm 15
is gradually lowered as the injection amount increases, and the upper surface of the high-consistency composition B that is constantly injected is below the cooling water level,
To prevent packaging bag A from being heated. in this case,
If necessary, a cooling water injection nozzle 97 may be provided as shown in FIG. 11c.

When the predetermined amount of injection is completed (d in the same figure), the nozzle 56 and the air blowing pipe 80 are pulled up, the gripping arm 15 is rotated with the packaging bag A submerged in the cooling water W, and the sealing means 12 is rotated. reach the position of
Stop. Next, the opening of the packaging bag A is heat-sealed C using the sealing means 12, and the opening means 1
The opening cylinders 95, 95 of No. 3 are activated, the gripping means 18 is opened, and the packaging bag A is discharged into the cooling water W (see e in the figure). In this case, in packaging bag A,
For example, when filled with asphalt, the specific gravity of the asphalt is usually 1.0 to 1.4, which is slightly heavier than water, but some air is also sealed in bag A, so the bag A can swim with the sealed upper part facing up. death,
Because it is moved by water flow, there is no need to install special equipment for movement, and it is reliably cooled.
It is taken out at the other end of the water tank 2 by appropriate means. In addition, in FIG. 1, 96 is a guide plate that guides the swimming packaging bag A.

In the above embodiment, the lifting cylinder 29 is attached to the rotating table 30 as the lifting member 16 of the gripping arm 15, and the structure rotates together with the gripping arm 15. However, the rotating table 30 is omitted and the lifting cylinder 29 is packaged. Bag supply means 10 and filling means 1
1 may be provided at each position.
That is, at the position of the packaging bag supply means 10, it is engaged with the gripping arm 15, pulled upward to grip the packaging bag A, and by rotating the gripping arm, the lifting cylinder at the position of the supplying means 10 is moved. may be disengaged from the engaging claw 28, and the engaging claw of the lifting cylinder located at the position of the filling means 10 may engage with the dovetail groove 17a, and the gripping arm may be raised and lowered in the manner described above. . Further, although the lifting cylinder 29 has a structure in which the base block part 17 is suspended from above, the lifting cylinder 29 may be attached below the base block part 17 and support the base block part from below. . Further, in this example, two packaging bag gripping means 8, two packaging bag supply means 10, two filling means 11, etc. are provided, but it is of course possible to provide one each, or three.
or more may be provided.

As described above, according to the present invention, when filling a packaging bag with a high consistency composition, the packaging bag is sequentially submerged in cooling water depending on the filling amount, so that cooling of the packaging bag is ensured. Therefore, even if the temperature of the high consistency composition injected exceeds the softening point of the packaging bag, the packaging bag is prevented from being damaged due to softening. In addition, since the packaging bag is allowed to settle in the cooling water according to the amount of injection, the packaging bag is maintained in an inflated state, making it possible to reliably inject a predetermined amount, with a simple configuration and effective cooling. be able to.

In addition, when asphalt is used as a high-consistency composition, even if the packaging bag is put into a melting pot and heated and melted, the amount of asphalt in the packaging bag is small and does not impair the physical properties of asphalt, making it comparable to conventional paper bags. It has many advantages, such as the fact that there is no need to tear it open or carry out exhaust treatment during use.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view of the entire bagging apparatus for high consistency compositions according to the present invention, FIG. 2 is a longitudinal sectional view of a packaging bag gripping means and a filling means, and FIG. 3a is a line taken along line X-X in FIG. 3b is an explanatory diagram of the operation of the gripping mechanism, 4th is a front view of the gripping arm, and 5th
Figure 6 is a front view of the packaging bag supply means, Figure 6 is an explanatory diagram of the operation of the packaging bag supply means, Figure 7 is a longitudinal sectional view of the filling valve, Figure 8 is a front view of the air blowing member in the filling means, Figure 9 is a front view of the sealing means; Figure 10 is a front view of the sealing means;
The figure is a front view of the upper part of the sealed packaging bag, and FIG. 11 is a diagram of the bagging process of the high consistency composition. 1...High consistency composition bagging device, 2...Cooling water tank, 8...Packaging bag gripping means, 10...Packaging bag supplying means, 11...Filling means, 12...Sealing means,
13...Release means, 15...Gripping arm, 16...
...Arm lifting member, A...Packaging bag.

Claims (1)

[Claims] 1. A packaging bag is held by gripping means, and the packaging bag is filled with a high consistency composition and the opening is sealed in sequence, and then the packaging bag is placed in a cooling water tank. In addition to cooling, when filling the high-consistency composition, the high-consistency composition is gradually lowered as the injection amount increases, and the upper surface of the high-consistency composition to be injected is always below the cooling water level, and the outer peripheral part of the bag to be filled is A method for packing a high consistency composition into bags, which comprises cooling the composition with the cooling water. 2. A packaging bag gripping means is rotatably provided on the cooling water tank, and a supplying means for supplying the packaging bag to the gripping means, a filling means for injecting the high consistency composition into the gripped bag, and a filling means for injecting the high consistency composition into the gripped bag. A sealing means for the opening of the packaging bag, and a release means for releasing the packaging bag from the gripping means are sequentially arranged corresponding to the gripping means, and the gripping means grips the packaging bag, and the high consistency composition is applied to the packaging bag. Filling the object and sealing the opening are performed in sequence, and each means is operated in conjunction with each other so that the filled packaging bag is dropped into the water tank by the release means, and the amount of high consistency composition injected into the gripping means is increased. 1. A bagging device for a high consistency composition, characterized in that a lifting member for a packaging bag is provided, which lowers the packaging bag one after another and causes the upper surface of the high consistency composition always injected to settle below the surface of the cooling water.