JPH0440242B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention is mainly concerned with converting compositions that are solid or semi-fluid at room temperature (hereinafter referred to as high consistency compositions), such as asphalt, tar, and pitch, into thermoplastic polymer materials. The present invention relates to a bag holding device for filling bags made of film.

For example, asphalt has traditionally been transported in drums, but each drum weighs approximately 200 kg.
However, it is inconvenient to handle, and there are problems such as requiring a lot of effort to dispose of the drum chisel after use.

For this reason, the inventors filled the bag while cooling it into a bag mainly made of polyethylene resin, which has a lower melting point than straight asphalt in a fluid state, and packed it into a bag that is relatively small and lightweight (approximately 20 kg), making it easier to transport and use. We proposed a bagging device that allows for smoothing (patent application 1982-
No. 1004). A further object of the present invention is to provide a bag filling device which can cool the bottom of the bag more effectively and facilitate maintenance and cleaning.

That is, the bag holding device for bagging the high-consistency composition of the present invention is located between and below a pair of left and right endless side belts that are disposed opposite to each other with a required interval. A bag holding part is formed by a bottom cooling flotation means provided at A water layer is formed between the top plate and the top plate.

This prevents the bottom of the bag from coming into contact with the top plate, allowing for effective cooling and preventing damage to the bag.

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

In the figure, a bagging device 1 includes a bag holding part 2,
The bag holding part 2 consists of a pair of left and right endless side belts 3, 3 facing each other at a predetermined interval, and a bottom water tank 4 located between the two belts and below the belts. configured. The side belts 4, 4 are preferably made of a thin steel plate with good heat conduction and corrosion resistance, and the front and rear pulleys 5, 6 (either one One of the belts is a driving pulley), and supporting rollers 7 are provided at predetermined intervals on the opposing part, and the distance between both belts is maintained at a predetermined interval (for example, 100 to 150 mm).

The bottom water tank 4 is placed on an elevating table 8, and its entire length is at least the length from a high consistency composition filling position to a position from which a filled bag is discharged, which will be described later. The top surface of the water tank 4 is constantly pushed up to a required height, and guide bars 1 are provided protruding from both sides of the water tank.
0 to guide the lower ends of the side belts 3, 3, and lower the lifting table 8 during maintenance, cleaning, etc. to form a gap between the side belts 3, 3. A top plate 11 having a large number of pores 12 is attached to the upper surface of the water tank 4, and an air supply pipe 13 is inserted into the water tank 4 if necessary. This air supply pipe 13 is provided with a large number of blow-off holes to blow pressurized air into the water tank 4. A pressure water supply pipe 14 is also connected to the water tank 4, and pressure water and pressure air are jetted out from the pores 12 of the top plate 11. Reference numeral 15 denotes a wire mesh attached to the back surface of the top plate 11, which is effective in uniformly distributing pressurized air to the front surface of the top plate. Further, 16 is a tank that receives water overflowing from the water tank 4.

A bag supply means 17 for supplying the bags A is provided on one side of the bag holding part 2, and a pair of left and right endless chains 18, 18 are provided above the bag holding part 2, substantially parallel to the side belts 3, 3. will be placed.

The endless chains 18, 18 are provided with clips 20 at predetermined intervals for removably holding the opening of the bag A. 21 is a sprocket foil for stretching the chain.

Further, the bag holding part 2 is sequentially provided with a filling means 22 for filling the high consistency composition W and a releasing means 24 for sealing the opening of the bag A.
7, and a cooling water tank 25 for cooling the high consistency composition W packed in a bag is provided on the opposite side. Further, a plurality of cold water nozzles 26 are provided for spraying cold water onto the side belts 3, 3 extending between the filling means 22 and the releasing means 24. In this embodiment, the sealing means 23 is the lower sealing means 23A.
An example is shown in which two-stage sealing is performed using the filling means 22 and the lower sealing means 23B.
A, the upper sealing means 23B, and the release means 24 are provided at equal intervals, and the side belts 3,
3 and the endless chain 18 are intermittently moved by a distance (hereinafter referred to as a predetermined pitch) equal to the distance between the filling means 22 and the lower sealing means 23A.

The bag supply means 17 uses a rodless cylinder, a conveyance chain, etc. between the bag supply table 30 that can be raised and lowered to load the bags A, and the rear portions of the endless chains 18, 18 on the left and right sides. an upper conveyor 31 that can reciprocate back and forth; a take-out device 32 for taking out bags A one by one from the bag supply table 30 and delivering them to the conveyor 31; A bag attaching device 33 for transferring the bag to the clip 20 of the endless chains 18, 18 is provided.

Details of the above-mentioned take-out device 32 are shown in FIG. A main shaft 35 is rotatably supported by a fixed bracket (not shown) above the bag supply table 30, and a driving arm 36 and a cylinder support 37 are fixed to the main shaft 35. At the tip of the piston rod 36 is an air cylinder (not shown) for rotating the main shaft 35 by 90 degrees.
8 are connected, and the support stand 37 has a bracket 37a.
An air cylinder 39 for taking out the bag is attached, and this air cylinder 39 is configured to reciprocate between a vertical position shown by a solid line and a horizontal position shown by a chain line as the piston rod 38 moves back and forth. And the piston rod 39a of this air cylinder 39
A bag suction device 40 having a plurality of suction cups 40a is attached to the tip.

5 and 6, reference numeral 45 denotes a sliding table suspended from the upper conveyor 31 via a vertical arm 45a, and the sliding table 45 has a clip 46 for holding the opening of the bag A. can be installed. That is, a fixing bar 46a of a clip 46 is fixed to the right side of the lower surface of the sliding table 45 (see FIG. 5), and a bracket 47 and a pin 48 are fixed to the center of the lower surface of the sliding table 45.
The movable bar 46 of the clip 46 is rotatably attached. On the back side of the movable bar 46b are the piston rods 50a of the two front and rear clip air cylinders 50, which are attached to the sliding table 45 by the bracket 49.
When the piston rod 50a is extended, the movable bar 46b comes into contact with the fixed bar 46a and is closed.

The clip 20 of the endless chain 18 attaches the attachment 18 to the endless chain 18, as shown in FIG.
The clip holder 55 is attached to the lower end of the clip holder 55, which is fixed through the clip holder 55, and the lower end is closed by the elasticity of a spring (not shown). The sliding piece 55a fixed to the upper end of the clip holder 55 allows the inner lever portion of the clip 20 to slide into contact with the downwardly extending end of the chain guide 56 installed above the endless chain 18. ing.

Next, the bag attaching device 33 of the bag supply means 17 is
8 and 8, a pair of front and rear clip push levers 60, 60 are provided below the endless chain 18 at an interval equal to the interval between the clips 20. This clip push lever 60 has a projection 60a at its upper end that contacts one of the lever parts of the clip 20, and its lower end is supported by a pin 61a of a bracket 61 so as to be able to swing from side to side. The lever portion of the clip 20 is pushed by the projection of the piston rod 62a of the clip-pushing air cylinder 62, which is supported so as to be able to swing up and down at this position, and the gripping portion at the lower end is opened. on the other hand,
One set of front and rear clip pushing air cylinders 62, 6
An air cylinder 63 for opening the mouth is provided at the lower middle of the opening 2. The air cylinder 63 for opening the mouth is supported so as to be able to swing up and down, and the elevating table 63a fixed to the end on the chain side is placed on a disc-shaped eccentric cam 64 fixed to the cam shaft 64a. has been done. A suction device 65 having a plurality of suction cups 65a arranged in parallel in the front and back direction is fixed to the tip of the piston rod 63b of the air cylinder 63.

Next, the filling means 22 for filling the bag A with the high-consistency composition W includes two air blowing pipes 70, 70, which are movable up and down, as shown in FIGS. 9 and 10. , and a high consistency composition injection pipe 71 disposed therebetween. The air blowing pipe 70 has a large number of blowholes 70a perforated downwardly, sideways, etc. at its tip, and blows air into the bag A to inflate it, and the left and right side belts 3,
3, the high consistency composition W is injected into the bag A from the injection tube 71, and the tip of the air blowing tube 70 is inserted into the bag A from the solid line position above the bag A. It is raised and lowered by appropriate means to the position indicated by the chain line on the other side.

FIG. 11 shows a lower sealing means 23A for heat-sealing the opening of the bag A filled with the high consistency composition W, and includes a pair of left and right heating bars 75, 75 that are long in the front and back direction. This heating bar 75 is provided with a protruding strip 75a extending in the front and back direction, and the side belt 3
The clip 20 is moved forward and backward in the width direction by an air cylinder (not shown) approximately midway between the upper edge of the clip 20 and the clip 20 . In addition,
The above-mentioned protrusion 75a has both ends bent downward, and the first
As shown in FIG. 2, the end 76a of the lower seal line 76
It is preferable to tilt the

FIG. 13 also shows the upper sealing means 23B,
It is equipped with heating bars 77, 77 that are almost the same as the lower sealing means 23A, and each has long straight protrusions 77a, 77a protruding in the front-rear direction, and is lowered at a position slightly above the lower sealing means 23A. A linear upper seal line 78 is formed in the same manner as the side seal means 23A.

In addition, when sealing each of the above, it is preferable to leave some slack in the upper part of the bag A and to pull it in the lateral direction to prevent the occurrence of wrinkles. FIG. 15 shows an example of the loosening device 80. A rotating shaft 82 supported by a fixed bracket 81 has a suction cup 8 at its tip.
3, and a rotating arm 86 whose tip is connected to the piston rod 85a of the actuating cylinder 85 are fixed at approximately right angles, and the supporting arm 84 is normally retracted to the position indicated by the chain line. When the bag A is in the corresponding position, the support arm 8
4 to the solid line position, and use the suction cup 83 to remove bag A.
, and rotates again to the chain line position to pull up the bag A and form a slack 87 at the top of the bag A.

FIG. 16 shows a tensioning device 90 for preventing wrinkles. Fixed brackets 91a and 91b provided at intervals approximately equal to the width of bag A
levers 92a, 92b are rotatably supported on the shafts, respectively, and both levers 92a, 92b are connected to connecting rods 93.
An arm 95 is attached to a support shaft 94 to which one lever 92a is attached, and a piston rod 96a of an air cylinder 96 is engaged at the tip of the arm 95. ing. As a result, both levers 92a and 92b are normally retracted to the position indicated by the solid line,
When sealing is performed, the bag A is rotated to the position shown by the solid line, and the opening edge of the bag A is expanded in the width direction, thereby preventing wrinkles from forming.

Note that the release means 24 provided in front of the seal means 23 is similar to the clip push lever 60 shown in FIGS. 7 and 8, and is similarly operated by an air cylinder, so a description thereof will be omitted. do.

In the above structure, the bag A placed on the bag supply table 30 of the supply means 17 is the uppermost bag A.
The bag A is sequentially taken out by the operation of the air cylinder 39 for taking out the bag, pulled up and held vertically, and then the upper end of the bag A is brought into contact with the fixing bar 46a of the clip 46 by pushing out the piston rod 39a. Then, the movable bar 46b is rotated by the air cylinder 50 for clipping, and the bag A
The mouth part of the bag is held between the fixed bar 46a and the movable bar 46b, and the bag is conveyed to the position of the bag attaching device 33 by the upper conveyor 31.

When the clip 46 stops at the position of the bag attaching device 33 (see Fig. 7), the left and right suction cups 65a, 65a are pushed out by the operation of the opening air cylinder 63 and are crimped and suctioned to both sides of the bag A, and then the clip air is released. The piston rod 50a of the cylinder 50 is retracted to release the clip 46 from the bag A. Thereafter, by retracting the piston rods 63b, 63b of the left and right open-mouthed air cylinders 63, 63, the upper part of the bag A is opened as shown by the chain line in FIG. Move it directly below the attached clip 20.
At this time, the movable claw of the clip 20 has been opened in advance, and the eccentric cam 64 on the lower side of the opening air cylinder 63 is rotated 180 degrees to open the piston rod 63.
By pushing up b, the upper edge of bag A rises and enters the opening of clip 20. Then, the clip 20 is closed and the bag A is held by the clip 20.

In other words, bag A has a total of 4 in the front, back, left and right at the mouth.
The endless chain 18 and the side belt 3 are moved simultaneously at the same speed and stopped when the bag A reaches the filling means 22. When the endless chain 18 and the like stop, the air blowing pipe 70 of the filling means 22 is lowered and inserted into the bag A, and air is blown into the bag A to inflate it and bring the left and right sides of the bag A into pressure contact with the side belts 3, 3. , and is cooled by cold water spouted from the cold water nozzle 26 and a mixed fluid of water and air blown up from the bottom water tank 4.

Next, after the air blowing pipe 70 is pulled upward, a predetermined amount of the high consistency composition W is injected into the bag A from the high consistency composition injection pipe 71. At this time bag A
is in contact with the side belts 3, 3 which are cooled by cold water, and is sprayed with cooling water directly if necessary, and is further cooled from the bottom by a mixed fluid of air and cold water blown up from the bottom water tank 4. Even if the melting point of bag A is slightly lower than the temperature of the high consistency composition, bag A will not melt. In addition, since the bag A is held between the left and right side belts 3, 3, and the bottom is supported by the top plate 11 through the layer of air-cold water mixed fluid that is blown up, the bag A does not lose its shape.

When the bag A is filled with a predetermined amount of the high consistency composition W, the endless chain 18 and the side belts 3, 3 are driven again, and the bag A is transferred to the lower sealing means 23A, as shown in FIG. The bag A is clamped and sealed by the left and right heating bars 75, 75 as shown in FIG.
As shown in the figure, an upper seal line 78 is applied at a position slightly above the lower seal line 76.

In this case, when the loosening device 80 shown in FIG. 15 and the tensioning device 90 shown in FIG. Since it is held in tension in the lateral direction, it is possible to seal reliably. Note that 97 in FIG. 14 is a bottom seal line.

A sealed in this way is an endless chain 1
8 or the like to the release means 24, and the release means 24 releases the connection with the clip 20.
By being sent further forward, it is thrown into the cooling water tank 25 via the chute 98, and the high consistency composition in the bag A is cooled and solidified, and then taken out of the water by an appropriate means.

In the above embodiment, the left and right side belts 3, 3
The interval can be partially changed. For example, the part behind the filling means 22 (on the side of the supply means 17) is made wider than the part in front of the upper conveyor 3.
1 can easily insert the clip 46.

In addition, the side belt 3 is made of stainless steel plate,
Alternatively, it can be formed of a perforated plate with a large number of holes, a metal net plate, or the like.

Alternatively, only cold water may be spouted from the bottom water tank 4.

Further, although the sealing means 23 in this example has two seals, one at the top and one at the bottom, either one can be omitted. In addition, clips 20, 46
Of course, the shape and opening/closing mechanism can be changed as appropriate.

As described above, according to the present invention, when filling a high-consistency composition, both sides and the bottom of the bag holding part for the bag to be transferred are formed by side belts and a bottom water tank, and the holding parts hold both sides of the bag and the bottom part. Since the bag is filled with the composition while supporting the bottom and cooling the bag, it will not melt even if a bag having a lower melting point than the composition is used. Particularly, since the lower part of the bag holding part has a water tank and cooling water is jetted toward the bag from the top plate of the water tank, the bag can be effectively cooled. Moreover, since the cooling water spouted from the bottom water tank forms a water layer between the top plate and the bag, friction is reduced when the bag is moved, and the bag is not damaged. Furthermore, the bottom water tank does not have a special drive device and can be easily raised and lowered to set it in a predetermined position, making it extremely convenient for maintenance and cleaning.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view of the entire bag filling device according to the present invention, Fig. 2 is a cross-sectional view taken along the - line in Fig. 1, and Fig. 3 is a cross-sectional view of the bag holding part taken along the - line in Fig. 1. Fig. 4 is a detailed cross-sectional view of the bottom water tank, Fig. 5 is a front view of the bag feeder, Fig. 6 is a view along the - line in Fig. 5, and Fig. 7 is a detailed cross-sectional view of the bottom water tank. 8 is a sectional view taken along the line - in FIG. 7, FIG. 9 is a sectional view taken along the line - in FIG. 1, and FIG. 10 is a sectional view taken along the line - in FIG. 9. A sectional view along the line, FIG. 11 is an explanatory diagram of the operation of the lower sealing means,
FIG. 12 is an explanatory diagram of the upper half of the bag with the bottom sealed, FIG. 13 is an explanatory diagram of the operation of the top sealing means, FIG. 14 is a front view of the bag with the top sealed, and FIG. 15 is an illustration of the loosening device. FIG. 16 is an explanatory diagram of the operation of the tensioning device. DESCRIPTION OF SYMBOLS 1...Bag filling device, 2...Bag holding part, 3...Side belt, 4...Bottom water tank, 11...Top plate, 12
... Pore, 17 ... Bag supply means, 18 ... Endless chain, 20 ... Clip, 22 ... Filling means, 2
3... Seal means, 24... Release means, 25...
Cooling means, 26... cold water nozzle, A... bag.

Claims (1)

[Claims] 1. A bag holding part is formed by a pair of left and right endless side belts that are arranged opposite each other with a required interval, and a bottom cooling flotation means that is located between and below the belts. The bottom cooling flotation means is equipped with a top plate having a large number of pores in its upper surface, and pressurized water is ejected from the pores to form a water layer between the bag bottom and the top plate. A bag holding device for bagging high consistency compositions.