JPS6357282B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is applicable to various types of pitch, asphalt, and other bituminous materials, greases, solid paraffin, and other compositions that are solid or semi-liquid at room temperature (hereinafter referred to as The present invention relates to a device for filling bags made of a film of thermoplastic polymeric material with a "consistent composition" in a fluidized state under heating.

(Prior art) As a device for bagging high-consistency compositions such as styrene asphalt, a cylindrical rotary disk rotatably provided on a circular bottom plate is partitioned radially into bottomless grooves. Water cooling sections are alternately formed, and the bags placed in the grooves are filled with the high consistency composition extruded from the extruder above, and the rotary disk is rotated in one direction to achieve the high consistency composition. It is known that when the bag filled with the consistency composition reaches the bottomless plate provided on a part of the bottom plate, the bag is caused to fall by its own weight onto the transport belt below. (Refer to Japanese Patent Publication No. 41-22077).

(Problems to be Solved by the Invention) The above-mentioned known bagging device places the bags in the grooves between the water cooling parts formed radially on the cylindrical rotary disk. When a flexible bag is used, a disadvantage is that a lot of manpower is required to attach the bag, to support the bag during and after filling with the high consistency composition, and to seal the entrance of the bag. In addition, since the groove width is wide and the bag does not come into contact with the partition plate between it and the water cooling section, it is difficult for the bag to be cooled. If a bag made of polyethylene resin, which has a low melting point, is used, the bag will melt and
The shape of the bag after filling was irregular. Furthermore, when the turntable rotates, the bottom of the bag comes into sliding contact with the top surface of the bottom plate, so there is a drawback that the bottom of the bag is easily damaged.

This invention can use a film bag made of a thermoplastic polymer material whose melting point is slightly lower than that of the high-consistency composition, automatically fills the bag with the high-consistency composition, and To provide a bagging device for a high-consistency composition, which can heat-seal parts of the bag, keep the shape of the bag constant after filling, and prevent damage to the bag.

(Means for Solving the Problems) The bagging device of the present invention includes an endless bottom belt 3 whose belt surface is horizontal, and a pair of left and right endless side belts 4, 4 whose belt width direction is vertical. A pair of left and right endless chains 8, 8 are disposed above the side belts 4, 4 to which film holding clips 9 are attached at a predetermined interval. , 4, a bag 1 made of a film made of a thermoplastic polymer material is inserted between the left and right side belts 4, 4, and the opening of the bag 1 is held in an open shape by the clip 9. A bag supply means 14 is provided, a water tank 19 is provided below the bottom belt 3 on the other end side, and a bag held by the clip 9 is provided between the bag supply means 14 and the other end of the side belts 4, 4. a filling means 15 for injecting a high consistency composition into the bag 1 after blowing air into the bag 1 and bringing the bag into contact with the opposing surfaces of the left and right side belts 4, 4; a mouth of the bag 1; Sealing means 16, 17 for heat-sealing the bag 1, and release means 18 for removing the bag 1 from the clip 9 are sequentially provided, and furthermore, the filling means 15 and the release means 18 are provided.
A large number of cold water nozzles 39 are arranged along the side belts 4, 4 for spraying cold water onto the side belts 4, 4 in the portions spanning the bottom belt 3, the left and right side belts 4, 4. The left and right endless chains 8, 8 are each rotated synchronously along the bottom belt 3 from one end side to the other end side.

(Function) At one end side of the bottom belt 3 and the pair of left and right side belts 4, 4 forming a channel, the bag 1 made of thermoplastic polymer material is fed to the side belts 4, 4 by the bag supply means 14. The mouth of the bag 1 is held between the clips 9, 9 of the pair of left and right endless chains 8, 8 above the side belts 4, 4, and the bag 1 is held between the bottom belt 3 and the side belts 4, 4. part belt 4,
4, and is suspended from upper endless chains 8, 8 in an open shape and transported. Then, when said bag 1 reaches the position of the filling means 15, air is blown into the bag 1, causing it to inflate so that its bottom is on the top surface of the bottom belt 3 and its sides are on the side belts 4, 4. The high consistency composition is injected into the bag 1 in this state by being cooled by cold water jetted from the cold water nozzle 39 via the side belts 4, 4. The bag 1 into which a predetermined amount of the high-consistency composition has been injected is continuously cooled by cold water jetted from the cold water nozzle 39, and the lower surface is supported by the bottom belt 3, and the sides are supported by the side belts 4, 4. The opening of the bag 1 is sealed at the sealing means 16 and 17, and then the opening is removed from the clip 9 of the endless chains 8 and 8 at the release means 18. Ru.
When the bag 1 filled with the above-mentioned high consistency composition reaches the other end of the side belts 4, 4, it falls into the water tank 19 below the bottom belt 3, is cooled in water in this water tank 19, and the bag 1 is filled with the high consistency composition. The high consistency composition in 1 solidifies.

(Example) In FIGS. 1 and 2, 1 is a bag made of a film made of thermoplastic polymer material such as polyethylene resin, and a large number of bags are placed on an elevator table with the opening facing downward in FIG. 2 are stacked on top of each other, and the height of the top surface is kept almost constant. In front of the above lifting table 2 (left side in Figures 1 and 2)
An endless bottom belt 3 with the belt surface horizontal
A pair of endless left and right side belts 4, 4 with vertical belt surfaces are arranged in a channel shape (see FIG. 7). The bottom belt 3 is made of a thin plate of rubber or steel, and is rotated in the direction of arrow P by front and rear pulleys 5, 5 so that the top part moves forward. It is supported from below by rollers 6. The side belt 4 is made of a thin steel plate, and is moved in the direction of arrow Q or R by front and rear pulleys 7, so that the left and right opposing parts located on the bottom belt 3 move forward. While being rotated, the opposing portions are held at a predetermined distance (100 to 150 mm) by support rollers (not shown). A pair of left and right endless chains 8, 8 are disposed above the side belt 4 and substantially parallel thereto. This endless chain 8 is provided with clips 9 at predetermined intervals that can removably hold the opening of the bag 1 as described later, and is connected to the lower side belt 4 by means of a large number of sprockets 10. rotated in the same direction.
Between the upper part of the lifting table 2 and the rear parts of the left and right endless chains 8, 8, there is an upper conveyor 11 that can reciprocate back and forth using a rodless cylinder, a conveying chain, etc. a take-out device 12 for taking out 1 sheets one by one and delivering them to the above-mentioned upper conveyor 11; and an upper conveyor 1
1 bag 1 is opened and its opening is inserted into the endless chain 8.
Bag attachment device 1 for transferring to the clip 9 of
A supply means 14 consisting of 3 is provided, and
In front of the supply means, air is blown into the bag 1 along the moving direction of the opposing parts of the endless chains 8, 8 to inflate it, and the bag 1 is brought into contact with the opposing surfaces of the left and right side belts 4, 4. A filling means 15 for injecting a high consistency composition into the bag, a lower sealing means 16 and an upper sealing means 17 for heat-sealing the opening of the bag 1 in upper and lower layers, and the bag 1 is inserted into the bag 1 from the clip 9. Release means 18 for removal are sequentially provided. On the other hand, on the outside of the opposing portions of the side belts 4, 4 extending between the filling means 15 and the releasing means 18, a large number of cold water nozzles ( 7 and 8), and a water tank 19 is provided below the front end of the bottom belt 3 for charging and cooling the bagged high consistency composition. Note that the filling means 15, the lower sealing means 16, and the upper sealing means 1
7 and the release means 18 are provided at equal intervals, and the distance between the bag attachment device 13 and the filling means 15 is set to twice the distance between the filling means 15 and the lower sealing means 16, and the above-mentioned bottom The belt 3, side belt 4 and endless chain 8 are intermittently rotated by a distance equal to the distance between the filling means 15 and the lower sealing means 16.

Details of the above-mentioned take-out device 12 are shown in FIG. A main shaft 20 for taking out bags in the front-rear direction is rotatably supported above the lifting table 2, and a driving arm 21 and a cylinder support 22 are fixed to this main shaft 20. A piston rod 21a for rotating the main shaft 20 by 90 degrees is connected to the support base 22, and an air cylinder 23 for taking out bags is connected to the support base 22 by a bracket 22a.
is attached, and this air cylinder 23 reciprocates between a vertical position indicated by a solid line and a horizontal position 23 indicated by a chain line as the piston rod 21a for rotation moves forward and backward. A bag suction device 24 having a plurality of suction cups 24a is attached to the tip of the piston rod 23a of the bag removal air cylinder 23.

In FIGS. 3 and 4, 25 is a sliding table suspended from the upper conveyor 11 via a vertical arm 25a, and the sliding table 25 has a rod shape for holding the opening of the bag 1. Clip 26 is attached. That is, a movable bar 26d of the clip 26 is rotatably attached to the center of the lower surface of the sliding table 25 by a bracket 26b and a pin 26c. Two front and rear clip air cylinders are attached to the sliding base 25 by a bracket 27 at the tips of two front and rear arms 26e, 26e protruding from the back surface of the movable bar 26d. The piston rods 28a, 28a are connected, and the fixed bar 26a and movable bar 26d of the bar-shaped clip 26 are closed when the piston rod 28a is extended (see FIG. 5). As shown in FIG. 5, the clip 9 of the endless chain 8 is attached to the lower end of a clip holder 29 fixed to the endless chain 8 via an attachment 8a, and the lower end is supported by the elasticity of a spring (not shown). is about to be closed.
The sliding piece 29a fixed to the upper end of the clip holder 29 is slidably fitted into a chain guide 30 installed above the endless chain 8, and the downwardly extending end of the chain guide 30 The inner lever portion of the clip 9 is in sliding contact with the clip.

Next, the bag attaching device 13 of the supply means 14 is
To explain this with reference to the drawings and FIG. 6, a pair of front and rear clip push levers 31, 31 are provided below the endless chain 8 at an interval equal to the interval between the clips 9. This clip push lever 31 has a protruding strip 3 on its upper end that is in contact with one lever portion of the clip 9.
1a, and the lower end is connected to the bracket 32 and pin 3.
2a, and a piston rod 33a of a clip pushing air cylinder 33, which is supported so as to be swingable up and down, is connected to a position slightly below the upper end.
Due to the protrusion, the lever portion of the clip 9 is pushed and the holding portion at the lower end is opened. On the other hand, a pair of air cylinders 3 for pushing the clips in the front and rear
An air cylinder 34 for opening the mouth is located below the middle of 3 and 33.
is provided. This mouth opening air cylinder 34
is supported so as to be able to freely swing up and down, and an elevating table 34a fixed to the end on the chain side is placed on a disc-shaped eccentric cam 35 fixed to a camshaft 35a below. There is. At the tip of the piston rod 34b of the air cylinder 34, a suction device 36 has a plurality of suction cups 36a arranged in parallel in the front and back direction.
is fixed.

As shown in FIGS. 7 and 8, the filling means 15 for filling the bag 1 with the high consistency composition includes two front and rear air blowing pipes 37, 37 which are provided so as to be able to rise and fall freely. two air blowing pipes 37,
A high-consistency composition injection pipe 38 is arranged between 37 and 37. The above air blowing pipe 37 is
A large number of blowholes 37a are bored at the tip of the tube in a downward or horizontal direction. The bag 1 is provided so that it can be inserted from the solid line position above the upper opening edge of the bag 1 to the chain line position inside the bag 1. On the other hand, the high consistency composition injection pipe 38 injects a certain amount of the high consistency composition.
For example, it is connected to a high consistency composition supply tank (not shown) via a metering extruder (not shown) configured to extrude 20 kg at a time. In addition, in FIG. 7 and FIG. 8, 39 is a cold water nozzle.

FIG. 9 shows a lower sealing means 16 for heat-sealing the opening of the bag 1 filled with the above-mentioned high consistency composition, and is composed of a pair of left and right heating bars 40, 40 long in the front and back direction. This heating bar 40 is provided with a protruding strip 40a extending in the front-rear direction, and is moved forward and backward in the width direction by an air cylinder (not shown) approximately midway between the upper edge of the side belt 4 and the clip 9. ing. In addition, it is preferable that both ends of the above-mentioned protrusion 40a are bent downward, and the end of the lower seal line 1a of the bag 1 is inclined, as shown in FIG. Further, FIG. 11 shows the upper sealing means 17, which is composed of heating bars 41, 41 substantially similar to the lower sealing means 16, and is provided with linear protrusions 41a, 41a, which are long in the front and back direction, respectively. It is driven by an air cylinder at a position slightly above the side sealing means 16 to move forward and backward in the width direction, forming a linear upper seal line 1b slightly above the lower seal line 1a, as shown in FIG. .

The release means 18 provided in front of the lower sealing means 17 is similar to the clip push lever 31 shown in FIGS. 5 and 6, and is driven by an air cylinder like the clip push lever 31. be done.

In the above structure, when a predetermined number of bags 1 are placed on the lifting table 2 of the supply means 14, the third
As shown by the solid line in the figure, the air cylinder 23 for taking out the bag is oriented vertically, the piston rod 23a is pushed out, and the plurality of suction cups 24a are pressed against the uppermost bag 1. Next, the above piston rod 23
When a is retracted, the top layer bag 1 is taken out. After that, turn the take-out spindle 20 counterclockwise.
When rotated 90 degrees, the air cylinder 23 is directed horizontally, and by pushing out the piston rod 23a again, the upper end opening of the bag 1 is brought into contact with the fixing bar 26a of the rod-shaped clip 26. When the piston rod 28a of the clip air cylinder 28 is pushed out, the movable bar 26d of the rod-shaped clip 26 is rotated, and the opening of the bag 1 is clamped by the fixed bar 26a and the movable bar 26d of the rod-shaped clip 26. When this clamping is completed, the bag removal air cylinder 23 is returned to its original position, and the bag 1 clamped by the rod-shaped clip 26 is conveyed to the bag attaching device 13 by the upper conveyor 11.

When the rod-like clip 26 stops at the position of the bag attaching device 13 (see FIG. 5), the piston rod 34b of the opening fluid cylinder 34 is pushed out, and the left and right suction cups 36a are crimped onto both the left and right sides of the bag 1. Next, the piston rod 28a of the clip air cylinder 28 is retracted to release the rod-shaped clip 26.
After releasing the bag 1, the piston rods 34a, 34 of the left and right opening air cylinders 34, 34 are opened.
When a is retracted, the upper part of the bag 1 is opened as shown by the chain line 1 in FIG. 5, and its upper edge moves directly below the clip 9 attached to the endless chain 8 which is in a stopped state. At this time, since the clip 9 has been opened in advance by pushing out the piston rod 33a of the clip pushing air cylinder 33, the bag 1 is opened by the opening air cylinder 34, and then the opening air cylinder 33 is opened. When the eccentric cam 35 on the lower side of the bag 34 is rotated 180 degrees to push up the piston rod 34a, the upper edge of the bag 1 rises and enters the opening of the clip 9. Then, by retracting the piston rod 33a of the clip pushing air cylinder 33 and separating the clip pushing lever 31 from the clip 9, the mouth of the clip 9 is closed and the bag 1 is pushed into the clip 9.
be held between.

There are a total of 4 clips 9 on the front, back, left and right sides of the bag 1.
When the bag 1 is clamped by the bag 1, the endless chain 8, the bottom belt 3 and the side belt 4 are driven simultaneously at the same speed, and when the bag 1 reaches the middle between the bag attachment device 13 and the filling means 15, The endless chain 8 and the like stop, and the bag 1 is clamped by the clip 9 that has reached the bag attachment device 13 in the same manner as above, and after this clamping is finished, the endless chain and the like are driven again and the first bag 1 is When the filling means 15 is reached, the endless chain 8 and the like described above are stopped. When the endless chain 8 and the like stop, the air blowing pipe 37 of the filling means 15 descends and is inserted into the bag 1, and air is blown out from its tip. The surface of the bag 4 is pressed against the bag 1, and the bag 1 is cooled by cold water sprayed from the cold water nozzle 39. Next, after the air blowing pipe 37 is pulled upward, a predetermined amount of the high consistency composition is injected into the bag 1 from the high consistency composition injection pipe 38. At this time, the bag 1 is cooled by cold water, so
Even if the melting point of the bag 1 is slightly lower than the temperature of the high consistency composition, the bag 1 will not melt. Further, since the bag 1 is supported by the left and right side belts 4, 4, the shape of the bag 1 does not collapse.

When the bag 1 is filled with a predetermined amount of the high consistency composition,
The endless chain 8 and the like are driven again, and the bag 1 filled with the high consistency composition is transferred to the lower sealing means 16, and as shown in FIG. 9, the bag 1 is sandwiched between the left and right heating bars 40, 40. The seal is pressed and heat sealed along the lower sealing line 1a in FIG. 10, and then further transferred to the upper sealing means 17, and the first
As shown in FIG. 1, a portion slightly above the lower seal line 1a of the bag 1 is clamped by left and right heating bars 41, 41, and heat sealed along the upper seal line 1b of FIG. 12. Note that 1c in FIG. 12 is the bottom seal line.

The package heat-sealed in this way is
By driving the endless chain 8 etc. again, it is sent to the release means 18, and after being uncoupled from the clip 9 by this release means 18, it is sent further forward, thrown into the water tank 19, and the bag is removed. The high consistency composition in 1 is cooled and solidified and then removed from the water. At this time, when the high-consistency composition is lighter than water, such as straight asphalt, the package floats on the water surface of the water tank 19 and can be easily recovered.

In the above embodiment, the left and right side belts 4,
4 can be partially changed. For example, behind the filling means 15 (on the supply means 14 side)
The upper part 11 can easily insert the rod-shaped clip 26 by making the part wider than the front part. In addition, the bottom belt 3 and the side belts 4 may be made of a stainless steel plate, a chromium-plated steel plate, a perforated plate with many holes in these plates, woven fabric, non-woven fabric, metal cotton net, rubber, etc. can do. Further, part or all of the air cylinders 23, 28, 33, 34, etc. can be replaced with electromagnets or the like. Further, when removing the suction cups 24a, 36a from the bag 1, the air cylinders 23, 34 are slightly inclined, so that the suction cups 24a, 36a can be easily removed. Further, both ends of the seal line 1a may be curved into an arc instead of being bent, and one of the seal lines 1a and 1b may be omitted depending on the type of high consistency composition. It goes without saying that the shapes and opening/closing mechanisms of the clips 9 and 26 can be modified as appropriate.

(Effects of the Invention) This invention forms a channel-shaped conveyor with a bottom belt and left and right side belts, supports the bags on the inner surface of this channel-shaped conveyor, and cools the bags with water. Since the bag is filled with a high-consistency composition, heat-sealed, and then placed in water in an aquarium, it is possible to automatically pack the high-consistency composition into a bag. It is also possible to use a bag with a low melting point without damaging the bag, and the shape of the package after filling can be made uniform along the top surface of the bottom belt and the opposing surfaces of the left and right side belts. I can do it.

[Brief explanation of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line -- in FIG. 1, and FIG. 3 is a - line sectional view in FIG.
4 is a right side view of FIG. 3, FIG. 5 is a sectional view taken along the - line in FIG. 1, FIG. 6 is a sectional view taken along the - line in FIG. 8 is a sectional view taken along the - line in FIG. 7, FIG. 9 is a sectional view taken along the - line in FIG. 11 is a sectional view taken along the line XI-XI in FIG. 1, and FIG. 12 is a front view of the bag heat-sealed in FIG. 11. 1: bag, 3: bottom belt, 4: side belt,
8: endless chain, 9: clip, 14: bag supply means, 15: filling means, 16, 17: sealing means,
18: release means, 19: water tank, 39: cold water nozzle.

Claims (1)

[Claims] 1 A channel is formed by an endless bottom belt whose belt surface is horizontal and a pair of left and right endless side belts whose belt width direction is vertical, and a film holding clip is provided above the side belts. A pair of left and right endless chains are installed at a predetermined interval, and a bag made of a film made of a thermoplastic polymer material is inserted between one end of the side belt and between the left and right side belts. A bag supplying means is provided for holding the mouth part of the bag in an open shape in the clip, a water tank is provided below the bottom belt on the other end side, and the bag supplying means is provided between the bag supplying means and the other end of the side belt. A filling means for injecting a high consistency composition into the bag after sucking air into the bag held by a clip and bringing the bag into contact with the opposing surfaces of the left and right side belts; a mouth portion of the bag; a sealing means for heat-sealing the bag, and a release means for removing the bag from the clip, and further for spraying cold water onto the side belt of the portion extending over the filling means and the release means. A large number of cold water nozzles are arranged along the side belt, and the bottom belt, left and right side belts, and left and right endless chains are rotated synchronously from one end to the other along the bottom belt. 1. A bagging device for a high consistency composition, characterized in that