JPH0730296Y2 - Lattice substrate cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a device for cutting a lattice-like substrate, and more particularly to a deodorizing filter for an air conditioner, which comprises a lattice-like filter substrate and activated carbon particles adhered to the filter substrate. In the manufacturing system of 1., the present invention relates to a device for cutting the lattice-shaped substrate.

[Prior Art] In the Japanese Patent Application No. 1-258748, the applicant of the present application has proposed a filter including a lattice-shaped filter substrate and gas adsorbent (mainly activated carbon) particles adhered to the filter substrate. . This filter has a thickness of the base body of about 15 mm or less, a plane area of one cell of the lattice of the base body of about 0.20 to about 0.35 cm ² ,
Size of the gas adsorbent particles = about 20 to about 60 mesh, amount of gas adsorbent particles used per unit area of the substrate plane = about 40
0-about 2000 g / m ² , aperture ratio of this filter = about 50-80%,
It is characterized by satisfying the condition of.

In summary, this filter differs from conventional filters in that the size of the activated carbon (gas adsorbent) particles is relatively large and the filter thickness is small. Therefore, it is necessary to give special consideration to the handling of the filter substrate and the impregnation of activated carbon, which is different from the conventional products.

[Problems to be Solved by the Invention] Since the substrate to be processed by the device of the present invention is not very solid in itself, the cutting line may be broken at the time of cutting. This is the same, for example, even when the substrate is appropriately dried after being coated with the pressure-sensitive adhesive so that the substrate has a certain degree of elasticity. Further, when the substrate is coated with the adhesive, the adhesive tends to remain attached to each part of the apparatus, which necessitates frequent stoppage of the apparatus and cleaning.

The present invention has been made based on this point of view, and an object of the present invention is to provide an apparatus capable of reliably cutting a lattice-shaped substrate. It is also an object of the invention to provide a cutting device suitable for treating substrates coated with an adhesive.

[Means for Solving the Problems] In order to achieve the above object, in the cutting device of the present invention, the conveyor for conveying the lattice-shaped substrate, the rotary blade type cutter for cutting the substrate, and the cutter are A member that is driven vertically between a retracted position above the base body and a cutting position that engages with the base body, and the cutter for cutting the base body is driven to travel in a direction substantially perpendicular to the transport direction of the base body. Member, a bar that presses the base body against the conveyor, a member that drives the bar up and down between a retracted position above the base body and a pressing position that engages with the base body, and It is characterized by further comprising: a member for stopping the conveyance for a certain period of time, and at this time, controlling the cutter and the bar to operate synchronously to cut the substrate.

In a preferred embodiment, the pressing bar has a slit extending in a direction substantially perpendicular to the transport direction of the base body, and the rotary blade of the cutter travels along the slit. Further, the transport surface of the conveyor is coated with Teflon, and the rotary blade surface of the cutter is coated with silicone rubber.

[Operation] With the cutting device according to the present invention having the above-described configuration, the conveyance of the substrate is stopped for a certain period of time, at which time the bar is lowered and the substrate is pressed against the conveyor. Further, in synchronization with this, the cutter descends in a rotating state to start cutting the substrate. While the substrate is stopped, the cutter travels in a direction substantially perpendicular to the transport direction of the substrate and cuts the substrate.
After the substrate is cut, the bar and the cutter are raised to return to the original position, and the substrate is resumed to be conveyed.

[Example] Structure and material of filter Fig. 2 is a plan view showing an example of the deodorizing filter 10 processed by the cutting device according to the present invention. This filter is composed of a lattice-shaped filter base 12 and gas adsorbent particles 14 mounted on the filter base 12.

The deodorizing filter 10 has an aperture ratio (in a plane parallel to the paper surface of FIG. 2) of about 50 to about 80%, and this value is obtained as a result of various conditions described later. The thickness of the filter 10 (direction perpendicular to the paper surface of FIG. 2) is 15 mm or less, preferably about 3 mm or more. The filter 10 is
As shown in FIG. 2, the size of the gas adsorbent particles 14 is relatively large, and the thickness of the filter 10 is small, which is different from the conventional filter. These features are key to satisfying conditions such as low pressure loss, appropriate deodorizing ability, and long life as a deodorizing filter for an air conditioner.

The base 12 is made of a thin material such as paper, aluminum or plastic. When paper is used as the material, it can be impregnated with a phenol resin or the like to reinforce the strength. Also the base
12 can also be non-combustible. Since the thickness of the substrate 12 is substantially the same as the thickness of the filter 10, it is about 15 mm or less, preferably 3 mm or more. This thickness is for this filter 10
Is finally stored in the housing of the air conditioner.

In the illustrated example, the lattice pattern of the base 12 is hexagonal, that is, a so-called honeycomb shape, but this pattern can be any shape such as a rectangle and a triangle. However, the plane area (in the plane parallel to the paper surface of FIG. 2) of one cell 16 of the lattice is about 0.20 to about 0.35 cm.
It becomes ² . This numerical value substantially means the density of the partition wall 18 for supporting the gas adsorbent particles 14.

The gas adsorbent particles 14 are made of activated carbon, but other types such as impregnated activated carbon can also be used. In addition, in order to deal with CO generation sources such as petroleum stoves, a catalyst capable of catalytically oxidizing CO can be used in combination with a deodorant. As this catalyst, a gold / oxide catalyst (disclosed in JP-A-60-238148, etc.) that does not die and activate even in the presence of water is desirable. The size of the gas adsorbent particles 14 is about 20 to about 60 mesh, and the amount of the gas adsorbent particles 14 used per unit surface area of the substrate 12 is about 400.
-About 2000 g / m ² .

The binder for mounting the gas adsorbent particles 14 on the substrate 12 is
It is desirable to use an adhesive to prevent the particles from falling off. Known adhesives such as acrylics, natural rubbers, synthetic rubbers, and silicones can be used as the adhesive, but in order to adhere strongly to the filter substrate so that activated carbon does not fall off, an adhesive with a high concentration is used. It is required that the agent is used and that the layer thickness thereof is increased to some extent. Therefore, the pressure-sensitive adhesive liquid used should have a high viscosity (about 10 to 50 poise), and the coating method should depend on the method capable of obtaining a thick layer thickness.

Overall Production System FIG. 3 is a plan view showing an overall example of a production system for a deodorizing filter for an air conditioner, which incorporates the cutting device according to the present invention.

At the entrance of the present system, there is formed an introduction part for introducing an unexpanded filter substrate, that is, a filter substrate in a collapsed state of the lattice into the system. In this system,
Since the unexpanded material block can be introduced and processed as it is, it is possible to reduce the labor and cost in transportation and storage of the material.

Free roller conveyors (introducers) 22 and 23 are arranged in the introducing section, and these are arranged in a direction parallel to the plane of the paper of FIG.
Are continuously introduced. A spreading machine is located between the conveyors 22 and 23.
24 is installed, which under the action of moisture and heat causes the substrate to expand, i.e. the grid to remain open. Following the conveyor 23 is a pin conveyor 26, which conveys the substrate by hooking the pins onto the grid of the substrate after spreading.

Following the conveyor 26, a dipping machine 28 for supplying a highly viscous pressure-sensitive adhesive to the spread substrate is provided. The dipping machine 28 is of a type in which the substrate 12 is forcibly dipped in a high-viscosity (about 10 to 50 poise) adhesive bath to form a thick adhesive layer over the entire area of the substrate. At this time, since the adhesive has a high viscosity, it is considered that a film is often formed in the lattice. Therefore, if it is dried as it is, the pressure loss of the finished filter increases,
This may cause deterioration of deodorizing performance and shortening of life. In order to avoid this, in the present system, a blower 32 for removing excess adhesive with air is provided after the dipping machine 28. Since the pressure-sensitive adhesive has a high viscosity, it is desirable that the air speed hitting the pressure-sensitive adhesive be fairly high (about 30 to 250 m / sec).

After the blower 32, a pin conveyor 34 similar to the conveyor 26
Is provided which delivers the substrate 12 to the pin conveyor of the next dryer 36. Because of the above-described configuration, in the illustrated system, when a new base material block is used, the base material is manually fed until the grid at the tip of the base catches on the pin of the pin conveyor of the dryer 36. It will be introduced from the entrance side.

The dryer 36 heats the substrate 12 to reduce the water content of the pressure-sensitive adhesive applied to the substrate to a predetermined amount. As a result, a predetermined viscosity is imparted to the adhesive and the odor of the solvent is blown off. Generally, the initial water content of the adhesive is about 70% by weight, which is 10% at the dryer 36 outlet.
It is reduced to less than or equal to wt%, preferably to about 3 wt%.
Also, the thicker the coating layer of the adhesive is, the more easily foaming occurs during the drying process, so this drying is performed at a moderate temperature (about 60 to 10).
It is desirable to perform the treatment at 0 ° C. for a long time (about 10 to 30 minutes).

After drying, the substrate 12 is cut to a predetermined size for a finished air conditioner filter. The substrate with the dried adhesive is
The cutting can be performed accurately because it itself has a considerable strength. Further, cutting before the impregnation of activated carbon has an advantage of prolonging the life of the cutting blade. However, it is also possible to cut the substrate after impregnating the activated carbon.

More specifically, at the outlet of the dryer 36, the first cutter 38
Is installed which cuts the substrate 12 in a direction transverse to the longitudinal direction from the conveyor 22 to the dryer 36 at right angles. Subsequent to this, a direction changing mechanism 44 is provided, and the substrate 12 cut by the cutting machine 38 is transferred from the roller conveyor 42 to the roller conveyor 46 in the conveying direction at right angles thereto. Conveyor 46
A second cutting machine 48 is installed at the end of the cutting machine, and cuts the base body 12 in a direction transverse to the longitudinal axis of the conveyor 46 at a right angle, and the base body is sized as described above.

Following the second cutting machine 48, an impregnating machine 54 for impregnating the activated carbon onto the substrate 12 having a predetermined size via the above-mentioned adhesive is arranged. The attachment machine 54 advances the substrate 12 by a vibrating conveyor mechanism that constitutes the bottom wall of the attachment machine 54. At the side of the impregnation machine 54, an activated carbon feeder 52 for supplying the activated carbon toward the substrate 12 so as to pour the impregnation machine 54 from above is disposed. At the rear of the impregnating machine 54, a sieving part 56 for removing a part of activated carbon is installed.

A belt conveyor 58 is disposed at the exit of the impregnation machine 54 at a right angle to the conveyor 44. At the end of the conveyor 58, a friction machine 62 for removing a part of the activated carbon by frictional action is installed, and further, a vibrating screen machine 64 is installed thereafter.

The activated carbon attached on the base 12 includes one that is firmly fixed to the base and one that is weakly attached. Activated carbon that adheres weakly may easily fall off due to subsequent contact, vibration, etc., and may pollute the environment. Therefore, it is desirable to drop off activated carbon during the manufacturing process. The dropping method includes a method using an impact force of a vibrating conveyor or the like, a method using centrifugal force, a method using friction such as a brush or a rough file, and one or more of these can be arbitrarily selected. . In the system shown, the sieving portion 56 and the sieving machine 64 remove the unnecessary activated carbon by the impact force of the vibrating conveyor, and the friction machine 62 by the rotational friction force of the file.

Following the sieving machine 64, a packing section 66 of a known type is provided. The filter substrate from which unnecessary activated carbon has been removed is then packed as a deodorizing filter for a completed air conditioner in a form suitable for shipment by a bag, a cardboard or a combination thereof. Further, here, it is also possible to improve the appearance and quality by enclosing the periphery of the completed filter with a ventilation material such as a non-woven fabric or a net using a means such as heat sealing.

Cutting Device FIGS. 1 and 4 are an enlarged front view and a side view of the first cutting machine 38. The cutter 38 has a structure in which the base 12 is pressed against the conveyor 42 side by the bar 194 and the rotary blade 192 of the cutter is driven in the transverse direction to cut the base 12. The rotary blade 192 and the bar 194 of the cutter operate synchronously with the following structure.

A pedestal 196 is arranged below the passage of the substrate, and columns 198 are fixed on both sides of the pedestal 196. Three cross shafts 204 are bridged between both columns via a mounting portion 202, and a cylinder 206 is reciprocally mounted therein. A vertical shaft 208 is arranged on the cylinder 206, and an upper and lower cylinder 212 is movably mounted along the vertical shaft 208. Further, the cylinder 212 has a motor below the rotary blade 192 through a frame 214.
216 is installed. Therefore, the rotary blade 192 is
Can be reciprocated by the action of, and can be moved up and down by the action of the cylinder 206.

On the other hand, a cylinder 218 is installed at the center of the gantry, and this cylinder rod has a horizontal frame 222 and a vertical frame 224.
Is connected to the pressing bar 194 via. Therefore, bar 194
Can be moved up and down by the action of the cylinder 218. Guides 226 engage on both vertical frames 224, which aids in positive movement of the bar 194.

A slit 228 is formed in the center of the pressing bar 194 along the longitudinal direction thereof, and a peripheral edge of the rotary blade 192 projects downward from the bar 194 through the slit 228. Rotary blade 1 when not cutting
92 and bar 194 are in the positions shown to allow passage of substrate 12. On the other hand, at the time of cutting, the rotary blade 192 and the bar 194 are moved down in synchronization with each other, and the rotary blade 192 presses the substrate 12 toward the conveyor 42 while the rotary blade 192 slits 228 of the bar 194.
The substrate 12 is cut while moving in the transverse direction along.

FIG. 5 is a perspective view showing the direction changing mechanism 44 after the first cutter 38. The conveyor 42 following the cutting machine 38 and the conveyor 46 having a conveying direction perpendicular to the cutting machine 38 are of a driving roller conveyor type having a large number of belt driven rollers 232 arranged in parallel.

Photosensors 231 are arranged on both sides of the conveyor 42 at positions of a predetermined length from the first cutter 38. When the sensor 231 detects the front end of the substrate 12 cut by the first cutting machine 38, the conveyor 42 is stopped for a certain period of time, and a new cutting is performed by the first cutting machine 38. As a result, it becomes possible to cut a substrate having a predetermined size.

That is, in the processing procedure in the cutting machine 38, first, the conveyor 42 is stopped for a certain period of time, and accordingly, the bar 194 is lowered from the retracted position to the pressing position, and the base 12 is pressed against the conveyor 42. Further, in synchronization with this, the rotary blade 192 is operatively lowered from the retracted position to the cutting position to start cutting the base 12. While the base 12 is stopped, the rotary blade 192 moves to the bar 1
It runs along the slits 228 of 94 and cuts the substrate 12.
After the substrate is cut, the bar 194 and the rotary blade 192 are raised and returned to the original position, the conveyor 42 is restarted, and the transport of the substrate 12 is restarted.

Further, since the adhesive has already been applied to the substrate 12, the adhesive tends to adhere and remain on each part of the apparatus. As a countermeasure against this, in the present device 38, the roller 232 of the conveyor is coated with Teflon tape, and the rotary blade 192 of the cutter is coated with silicone rubber. As a result, the operation stop frequency of the device and the cleaning labor can be significantly reduced.

An end wall 234 is installed at an end of the conveyor 42, and a pusher 238 attached to a rod of a cylinder 236 is provided at a side of the end wall 234 and vertically to the end wall 234. The base 12 cut by the cutter 38 collides with the end wall 234, and then the pusher 2
It is pushed by 38 and transferred to conveyor 46.

Subsequently, the substrate 12 is cut by the second cutting machine 48 in the direction perpendicular to the first cutting direction. The structure of the second cutter 48 and the method of dimensioning the substrate by the sensor are almost the same as those of the first cutter 38. Substrate is cut by both cutting machines 38, 48
12 is a predetermined size for the completed filter.

Although the present invention has been described in detail with reference to the preferred embodiments shown in the drawings, those skilled in the art to which the device of the present invention belongs can make various modifications to the above embodiments within the scope of the idea of the present invention. Will be

[Advantages of the Invention] According to the cutting device of the present invention, the pressing bar and the cutter can be synchronously operated to reliably and accurately cut a substrate having a weak waist. Further, by coating the surface of the conveyor or the blade of the cutter, the adhesion of the adhesive can be reduced, and the operation stop frequency of the device and the cleaning labor can be greatly reduced.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an enlarged main part of a cutting device according to the present invention. FIG. 2 is a plan view showing an example of a deodorizing filter processed by the device according to the present invention. FIG. 3 is a plan view showing an entire example of a manufacturing system for an air conditioner deodorizing filter incorporating a cutting device according to the present invention. FIG. 4 is a schematic front view showing an enlarged main part of the cutting device according to the present invention. FIG. 5 is a perspective view showing the direction changing mechanism after the first cutting machine. 22, 23 ... Free roller conveyor, 24 ... Spreader, 26 ... Pin conveyor, 28 ... Immersion machine, 32 ... Sprayer, 36 ... Dryer, 38
... 1st cutting machine, 44 ... Direction changing mechanism, 48 ... 2nd cutting machine, 52
… Activated carbon feeder, 54… Impregnation machine, 62… Friction machine, 64… Sieve machine, 66… Packing section, 192… Rotary blade, 194… Press bar, 206
… Transverse cylinders, 212… upper and lower cylinders, 218… upper and lower cylinders.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiroaki Kurihara 2-2-1 Toranomon, Minato-ku, Tokyo Inside Tobacco Inc. Japan (72) Inventor Doji Kobayashi 2-2-1 Toranomon, Minato-ku, Tokyo Yoshifumi Saeki, Examiner, No. 1 Japan Tobacco Inc.

Claims (4)

[Scope of utility model registration request] 1. A conveyor for conveying a lattice-shaped substrate, a rotary blade type cutter for cutting the substrate, and the cutter are vertically arranged between a retracted position above the substrate and a cutting position for engaging the substrate. A member for driving, a member for driving the cutter in a direction substantially perpendicular to the conveying direction of the substrate for cutting the substrate, a bar for pressing the substrate against the conveyor, and a bar for A member that is vertically driven between a retracted position above the base body and a pressing position that engages with the base body, and the conveyance of the base body is stopped for a certain period of time, and at this time, the cutter and the bar are synchronized. A member for controlling to cut so as to cut the substrate, the device for cutting a lattice-shaped substrate. 2. The apparatus according to claim 1, wherein the pressing bar has a slit extending in a direction substantially perpendicular to the conveying direction of the base body, and the rotary blade of the cutter runs along the slit. 3. An apparatus according to claim 1, wherein the conveying surface of the conveyor is coated with Teflon. 4. The apparatus according to claim 1, wherein the rotary blade surface of the cutter is coated with silicone rubber.