JPS6258798B2 - - Google Patents

Description

Detailed Description of the Invention The present invention can be used, for example, in a combined treatment tank, a single human waste treatment tank, a contact aeration chamber for industrial wastewater treatment, secondary or tertiary treatment, or a cooling tower, waste gas treatment tower, deodorization tower, etc. The present invention relates to a method for manufacturing a filler, and more specifically, to a continuous production technique for fillers.

Conventionally, the manufacturing method for this type of filler is to stack two nets and heat-seal them at a heat-sealing reference position, then stack one net on top, and then
The nets are heat-sealed at a position shifted by half a pitch from the heat-sealing standard position, and this process is repeated to heat-seal a large number of meshes at a half-pitch shift from each other. The parts that were not heat-sealed were separated to maintain the shape of the whole in a substantially honeycomb shape. However, this method requires a process of overlapping many nets one by one, and only heat-seals the two overlapping nets, which makes production difficult. There were problems in that the properties were low and material loss also occurred.

The present invention was made in view of these problems, and its purpose is to provide a contact aeration chamber, etc., which can significantly increase productivity and eliminate material loss through a rational heat fusion method. An object of the present invention is to provide a method for producing a filler used in

That is, in the present invention, in the course of transporting a large number of synthetic resin nets 1 substantially in parallel,
A heater 2 is disposed between every other mesh body 1, and a heat insulating spacer 3 is disposed between the mesh bodies 1 where no heater 2 is disposed to constitute a first heating area. The heater 2 and the heat insulating spacer 3 are disposed at a position shifted downstream in the direction of transfer of the net body, with the positions of the heater 2 and the heat insulating spacer 3 in the first heating region being exchanged, to constitute a second heating region. Each mesh body 1 is heated by heaters 2 in both regions,
The first group of nets is transferred, the heater 2 and the heat insulating spacer 3 are removed from the position of the heated net, and the first group of nets is pressed from both sides to thermally fuse the heated portions of the net. The first group of nets is then cut into appropriate lengths in the direction of transport of the nets 1, and the portions of the nets 1, 1 that are not heat-sealed are separated to maintain the shape of the entire net in a substantially honeycomb shape. The present invention relates to a method for manufacturing a filler used in contact aeration chambers, etc., and it has become possible to increase productivity through such a method.

The method of the present invention will be described in detail below with reference to drawings of an apparatus that implements the method.

FIG. 1 shows an apparatus implementing the method of the invention,
A net body 1 is supplied from a raw net roll 4, which is a long raw net made of synthetic resin and formed into a lattice-like net, wound into a roll, and passed through a guide roll 5 to form a group of many net bodies. A pair of upper and lower operating belt devices 6, 6 are used to collect the nets 1 in a pressed state, and in this pressed state, a large number of mesh bodies 1 can be dried in synchronization with each other. 7 is a separator, and the first
It is disposed on the upstream side of the heater 2 in the heating region in the mesh transport direction, and a large number of meshes 1 are arranged approximately parallel to each other in the heater 2 portion. net body 1
At the thermal fusion reference position of the group, a heater 2 is arranged for every other mesh body 1, and a heat insulating spacer 3 is arranged between the mesh bodies 1 where no heater 2 is arranged to form a first heating area. It is configured. At a position shifted by half a pitch in the transfer direction of the mesh body 1 from the first heating region, the heater 2 and the heat insulation spacer 3 are placed in the mesh body in a state where the positions of the heater 2 and the heat insulation spacer 3 in the first heating region are swapped. A second heating area is formed between the two heating areas. In the embodiment, only the first and second heating zones are configured, but third, fourth, etc. heating zones may be configured after the second heating zone.

The heater 2 and the heat insulating spacer 3 in the first heating zone and the second heating zone are set as a unit 17 as shown in FIG. That is, a strip-shaped heater 2 is attached to the upper fixing plate 8 by hanging approximately parallel to it at an appropriate interval, and a strip-shaped heat insulating spacer 3 is attached between the heaters 2 and hanging approximately parallel to the heater 2. and a heat insulating spacer 3 are loosely inserted into the through holes 10 of the lower guide plate 9 to form a unit 17. The heater 2 and the heat insulating spacer 3 each have sufficient flexibility so that they can be easily bent and deformed when pressed from the lateral sides. 11 is a first pusher, and a pair of first pushers 11, 11 are provided in the first heating area. Reference numeral 12 denotes a second pusher, which is a second pusher in which the pair of second pushers 12, 12 are shifted by half a pitch from the first heating area to the downstream side in the transfer direction.
It is located in the heating area. Reference numeral 13 denotes a preheating chamber, which is configured in the shape of a duct, and includes a blower 14 and a heating element 15.
A group of synthetic resin nets sent into the preheating chamber 13 are preheated by hot air supplied from a hot air device 16 that is combined with the above. Preheating chamber 1 like this
The transfer of the first group of nets preheated in step 3 is stopped when the pay-out rolls 6, 6 and the take-up rolls 18, 18, which will be described later, are stopped, and while the first group of nets is stopped, the first and second pushers 11 , 12, the first
As shown in Figure b, press the first group of nets from both sides,
By bending the heater 2 and the heat insulating spacer 3, the net body 1
is brought into contact with the heater 2 and the heat insulating spacer 3, and only the portion of the mesh body 1 that is in contact with the heater 2 is heated to a substantially molten state. In such a case, the portion of the mesh body 1 that is in contact with the heat insulating spacer 3 is suppressed from being heated. Next, the first and second pushers 11 and 12 are retired and returned to their original positions, and the payout roll 6 and take-up roll 18 are driven and rotated to pay out one pitch (P) of the first group of nets, and the first and second The portion of the mesh heated in the second heating zone is transferred to the heat-sealing zone.

A first pressing body 19 and a second pressing body 20 are provided in the heat fusion area.
and each pressing body is a cylinder 2.
A pressure roll 22 is attached to the tip of the roller 1. And the first pressing body 19 is 1 from the first heating area.
The second pressing body 20 is located one pitch (P) downstream from the second heating area. Therefore, in the first and second heating regions, by pressing the directly heated portion of the mesh body 1 that is directly heated by being pressed by the heater 2 from both sides by the first and second pressing bodies 19 and 20,
The directly heated portions of the net 1, which are in a substantially molten state, are pressed together and thermally fused together. In such case,
In the first heating area, the first and second pushers 11 and 12 are operated to press the net 1 group against the heater 2 to heat it directly, as shown in FIG. 1b. . After performing heat fusion in the heat fusion area, the first and second pushers 11,
12 and the first and second pressing bodies 19, 20 are released, and then the first group of mesh bodies is transferred one pitch again, and direct heating as described above is performed in the first and second heating areas, Further, the above-mentioned heat fusion is performed in the heat fusion area. In this way, a group of elongated net bodies are continuously heat-sealed and then cut to a fixed size by a cutter 23 on the downstream side to obtain an intermediate product 24 as shown in FIG.

Next, rod-shaped weights are inserted into the respective gaps between the heat-sealed parts of the lowermost net 1 and the upper net 1 of the intermediate product 24, and further weights W are inserted as shown in FIG.
The filling material 26 as shown in FIG. You get it. In the figure, 27 is a hot steam supply device, and 28 is a limit switch.

FIG. 7 shows another embodiment, in which the first and second pushers 11, 12 and the first and second pressing bodies 19, 2
0 in the same frame 29, and furthermore, the unit 17 of the heater 2 and the heat insulating spacer 3 is held in the opposing frames 29, 29, and these pair of frames 29, 29
can be driven and moved at the same speed as the transfer speed of the net 1 by a moving drive body 30 such as a cylinder, and the frame 29 moves one pitch (P) at the same speed as the net 1. , Immediately after performing the direct heating as described above and the heat fusion as described above, the frame 29 is
is reversed one pitch (P), and the first and second pressing bodies 19 and 20 return to the locations that were directly heated in the first and second heating zones in the previous step to perform heat fusion at these locations. It has been made possible to do so.
By making the frame 29 reciprocally movable in this manner, heat fusion can be performed while the first group of mesh bodies is continuously supplied without being stopped.

In summary, the present invention provides a method for disposing a heater between every other net during a route in which a large number of synthetic resin nets are transported substantially in parallel, and also providing a heat insulating spacer between the nets without a heater. A heater is placed at a position shifted downstream in the mesh conveying direction with respect to the first heating area, with the heater and the heat insulating spacer swapped in position in the first heating area. and a heat insulating spacer are arranged to form a second heating region, the respective mesh bodies are heated by the heaters in these two regions, the mesh body group is transferred, and the heater and the heat insulating spacer are removed from the heated mesh position. This is a method of heat-sealing the heated mesh parts by pressing the mesh from both sides, that is, by using heaters and heat insulating spacers placed every other sheet in the middle of the transport route of the mesh. Heat the mesh only in the area to be thermally fused, transfer the mesh, remove the heater and heat insulating spacer from the heated mesh, and press the mesh from both sides to heat each mesh. Since this is a method of heat-sealing the separated parts, it is possible to heat-seal adjacent meshes at once while transporting a long mesh group and shifting the heat-sealing positions of the adjacent meshes.
Compared to the conventional method of stacking one sheet at a time and heat-sealing them at different pitches, productivity can be greatly increased, and material loss can be avoided.

[Brief explanation of the drawing]

Fig. 1a is a schematic plan view of an apparatus implementing the method of the present invention, Fig. 1b is a schematic plan view showing the action of the first and second heating zones of the same, and Fig. 2 is an intermediate view obtained by the above. FIG. 3 is a process diagram for maintaining the shape of the intermediate product in the same manner as above, FIG. 6 is a perspective view of the pressing tool shown above, and FIGS. 7a and 7b are schematic plan views showing the operation of another embodiment of the same, 1 is a mesh body, 2 is a heater, and 3 is a The heat insulating spacer is a first heating area, and is a second heating area.

Claims (1)

[Claims] 1. In the middle of a route in which a large number of synthetic resin nets are transported approximately in parallel, a heater is placed between every other net and a heat insulating spacer is placed between the nets where a heater is not placed. A heater and a heat insulating spacer are arranged at a position shifted downstream in the mesh transport direction with respect to the first heating region, with the positions of the heater and the heat insulating spacer being swapped in the first heating region. to form a second heating area, heat each net with the heaters in both of these areas, transfer the net, remove the heater and heat insulating spacer from the heated net, and remove the heater and heat insulation spacer from the heated net. is pressed from both sides to heat-fuse the heated mesh parts together, and then the mesh group is cut to an appropriate length in the mesh transport direction, and the parts of the mesh that are not heat-fused are separated. A method for manufacturing a filler used in contact aeration chambers, etc., characterized by retaining the entire shape in a substantially honeycomb shape.