JP7380351B2 - Device and method for wrapping packaging material around molded activated carbon - Google Patents

Description

The present invention relates to a wrapping device and method for wrapping a packaging material around the outer periphery of shaped activated carbon.

BACKGROUND ART Molded activated carbon, which is made by solidifying activated carbon that can adsorb and remove odor components and organic substances, has been known as a filter material for water purification filters. For example, in a household water purification filter, the inner and outer peripheries and sides of a cylindrical activated carbon are covered with a packaging material such as nonwoven fabric, and a cap with a flow path is attached to both ends. I'm making it match. Water is introduced into the inner diameter of the formed activated carbon through the flow path of the cap and circulated in the radial direction, thereby adsorbing and removing harmful substances such as chlorine.

In manufacturing such water purification filters, activated carbon is deposited and hardened on the outer periphery of a nonwoven fabric tube to create a cylindrical shaped activated carbon, and after wrapping a nonwoven fabric as a packaging material around the outer periphery of the shaped activated carbon and welding and fixing it, The nonwoven fabric protruding from both ends in the axial direction is folded back to the end face and brought into close contact, and caps are adhesively fixed to both ends.

Here, as a method for wrapping the nonwoven fabric around the outer periphery of the shaped activated carbon, a first heater parallel to the cylindrical axial direction of the shaped activated carbon and a second heater parallel to the tangential direction are used to wrap the nonwoven fabric around the cylindrical axial direction and the circumferential direction of the shaped activated carbon. Accordingly, a method has been proposed in which pre-cut nonwoven fabrics are thermally welded. (Patent Document 1)

Patent No. 5273863

When water is passed through cylindrical shaped activated carbon, a load is applied to the shaped activated carbon due to water flow resistance in the radial direction, which may cause cracking or crushing. In that case, water flows to the cracked or crushed portions of the shaped activated carbon, making it impossible to obtain the desired filtration performance. In particular, when water is passed from the inner circumference to the outer circumference of the shaped activated carbon, there is no supporting member, so it is difficult to avoid cracking of the shaped activated carbon when a load due to water pressure is applied. In order to prevent this, it is effective to wrap the packaging material around the shaped activated carbon while applying tension in the circumferential direction.

However, the method of directly welding a cut nonwoven fabric to shaped activated carbon, as disclosed in Patent Document 1, uses a mechanism that applies tension in the running direction of the nonwoven fabric when wrapping the nonwoven fabric around the outer periphery of the shaped activated carbon. Since there is no tension, it is not possible to wind it with tension. In addition, the leading edge of the nonwoven fabric is directly welded to the surface layer of the shaped activated carbon, but if the nonwoven fabric is pulled in this state, the activated carbon at the welded area will fall off and the nonwoven fabric will easily peel off, so the equipment must be modified. It is also not possible to add a mechanism to apply tension to the nonwoven fabric.

That is, in the method of Patent Document 1, there is no mechanism for applying tension to the nonwoven fabric, and the nonwoven fabric directly welded to the surface layer of the shaped activated carbon is very easy to peel off, so it is impossible to apply tension to the nonwoven fabric.

The present invention was made in order to solve the problem that in conventional nonwoven fabric wrapping operations, it was not possible to wrap the nonwoven fabric by applying tension to the outer periphery of shaped activated carbon. To provide a device for wrapping a packaging material around shaped activated carbon and a method for wrapping a packaging material around shaped activated carbon.

The packaging material wrapping device for molded activated carbon of the present invention that solves the above problems is used for manufacturing a molded activated carbon cartridge in which a packaging material is wound around the outer periphery of a cylindrical molded activated carbon, and is a device for wrapping the packaging material around the molded activated carbon. hand,
a packaging material conveying means that intermittently sends out the packaging material;
A mechanism that holds both ends of the packaging material sent out by the packaging material conveying means in the width direction, and holds the packaging material in the portion that protrudes from the molded activated carbon and is rolled up, and while it is held, the packaging material is an end holding mechanism that can move outward in the width direction and move along the circumferential direction of the shaped activated carbon until the packaging materials overlap;
Packaging material tension applying means for applying tension across the entire width of the packaging material held by the end holding mechanism in a direction opposite to the direction in which the packaging material conveying means sends out;
a heater for thermally welding the overlapping portions of the packaging material wrapped around the outer periphery of the shaped activated carbon over the entire length of the shaped activated carbon in the longitudinal direction;
The present invention further includes a cutting mechanism that cuts a portion of the packaging material that has been thermally welded by the heater that is not wrapped around the shaped activated carbon over its entire width.

A method for producing a shaped activated carbon cartridge of the present invention that solves the above problems is a method for producing a shaped activated carbon cartridge in which a packaging material is wrapped around the outer periphery of a cylindrical shaped activated carbon, comprising:
a packaging material supply step of intermittently feeding the packaging material toward the shaped activated carbon;
a packaging material gripping step of gripping the portions of the sent-out packaging material that protrude from the molded activated carbon and are rolled at both ends in the width direction of the leading portion of the packaging material;
While holding both ends of the packaging material in the width direction,
a pulling process of pulling both ends of the packaging material outward in the width direction;
a tensioning step of pulling the packaging material across its entire width in a direction opposite to the sending direction in the packaging material supplying step;
a winding step of wrapping the packaging material around the outer periphery of the shaped activated carbon until the packaging materials overlap;
a welding step of thermally welding the overlapping portions of the packaging material over the entire longitudinal length of the shaped activated carbon;
A cutting step of cutting the entire width of the portion of the packaging material that is not wrapped around the shaped activated carbon is performed in this order.

By using the packaging material wrapping device for shaped activated carbon and the method for manufacturing a shaped activated carbon cartridge of the present invention, by using the shaped activated carbon and the wrapping material wider than the axial length of the shaped activated carbon, tension can be applied to the outer periphery of the shaped activated carbon. The packaging material can be wrapped and fixed.

Furthermore, since the leading edge of the packaging material is stretched along the surface layer of the molded activated carbon by first pulling it in the width direction, even if tension is applied later in the transport direction, the leading edge of the packaging material will not stretch. No deformation. As a result, the starting part of the wrapping material is in close contact with the surface layer of the formed activated carbon in a straight line, so even if the starting part of the wrapping material is visible after being rolled up, the quality of the appearance will be affected. good.

If the apparatus and method for wrapping packaging materials around molded activated carbon according to the present invention are applied to the process of wrapping packaging materials around molded activated carbon, the packaging material can be wrapped in a state in which the appearance of the overlapping parts of the packaging materials is good. It can be wrapped around shaped activated carbon under high tension.

FIG. 1 is a side sectional view of a replacement water purification cartridge 1 for a household water purifier. 1 is a schematic side view of a device for wrapping a packaging material around shaped activated carbon according to the present invention. FIG. 1 is a schematic front view of a device for wrapping a packaging material around shaped activated carbon according to the present invention. FIG. 3 is a schematic front view showing the area around the second chuck of the device for wrapping packaging material around shaped activated carbon according to the present invention. FIG. 2 is an explanatory diagram showing steps 1 and 2 of the method of wrapping a packaging material around shaped activated carbon according to the present invention. FIG. 4 is an explanatory diagram showing steps 3 and 4 of the method for wrapping a packaging material around shaped activated carbon of the present invention. FIG. 6 is an explanatory diagram showing steps 5 and 6 of the method for wrapping a packaging material around shaped activated carbon of the present invention. FIG. 3 is an explanatory diagram showing steps 7 to 8 of the method of wrapping a packaging material around shaped activated carbon of the present invention. FIG. 3 is an explanatory diagram showing steps 9 to 10 of the method for wrapping a packaging material around shaped activated carbon of the present invention. It is a figure which shows the state of a packaging material when both ends of a packaging material are gripped and tension is applied to a running direction.

The present invention will be explained using a household water purifier as an example with reference to the drawings.
FIG. 1 illustrates a side sectional view of a replacement water purification cartridge 1. As shown in FIG. However, preferred embodiments and examples are not limited to these.

The molded activated carbon 2 of the replacement water purification cartridge 1 is molded into a cylindrical shape, and has a cylindrical member 3 made of nonwoven fabric molded into a cylindrical shape on the inner wall. Here, the cylindrical member 3 may have a structure in which a nonwoven fabric is wrapped around a resin frame. A nonwoven fabric 4 serving as a packaging material is wrapped around the outer circumferential portion of the shaped activated carbon 2 over its entire length, and the nonwoven fabric 4 covers at least a portion of both end faces of the shaped activated carbon 2 in the axial direction.

Further, disk-shaped end caps 5 are attached to both end faces of the shaped activated carbon 2 in the axial direction. Further, in the center of the end cap 5, a flow passage 6 is provided as a through hole in the axial direction, and serves as an inlet or outlet to the inner wall of the cylindrical member 3. Note that an O-ring 7 is provided at the connection point with the household water purifier to ensure sealing performance.

[Device for wrapping packaging material around formed activated carbon]
See FIG. 2. FIG. 2 is a schematic side view of the device 10 for wrapping packaging material around shaped activated carbon. The apparatus 10 for wrapping a packaging material around shaped activated carbon includes one tension applying roller 12 and two guide rollers 11 arranged on both sides of the tension applying roller 12, and a web-like packaging material 13 is wound around the tension applying roller 12. The tension applying roller 12 is connected to a linear guide 14 that can move up and down in the Y direction in the figure, and can apply tension to the packaging material 13 using its own weight. Further, the tension applying roller 12 is provided with a weight (not shown), so that the tension applied to the packaging material 13 can be set freely. Furthermore, the movable portion of the linear guide 14 is connected to a wire (not shown) and a weight (not shown) via a pulley (not shown), and can apply a load in a direction that cancels the weight of the tensioning roller 12. Thereby, the tension applied to the packaging material 13 can also be set to be less than the weight of the tension applying roller 12 .

An unwinding machine 15 for feeding out the roll-shaped packaging material 13 is provided upstream of the tension applying roller 12, and since the unwinding machine 15 is equipped with a servo motor (not shown), the amount of the packaging material 13 to be fed out is controlled. can be set freely. Further, the servo motor is electrically connected to an encoder (not shown) provided on the linear guide 14 via a control device (not shown), and adjusts the feed amount of the packaging material 13 in conjunction with the position of the tensioning roller 12. can be controlled.

A third guide roller 11 and a conveyance roller 16 are arranged downstream of the tension applying roller 12. The conveyance roller 16 is equipped with a servo motor (not shown), and the amount of delivery of the packaging material 13 can be set freely.

A nip roller 17 is provided above the conveyance roller 16 , and the nip roller 17 is connected to a first lifting device 18 and pressed against the conveyance roller 16 . Here, the first elevating device 18 may be any type of device such as a hydraulic cylinder or a single-axis robot, but it is preferable to use an air cylinder, which is inexpensive and whose pressing force against the conveyance roller can be easily adjusted. Further, the surface layer of the nip roller 17 is coated with rubber to prevent the packaging material 13 from slipping.

On the downstream side of the conveyance roller 16, in order to cut the packaging material 13, a fixed blade 19 is disposed below the packaging material 13, and a movable blade 20 is disposed above the packaging material 13, each extending over the entire width of the packaging material 13. has been done.

The movable blade 20 is connected to the second lifting device 21 and is configured to be able to cut the packaging material 13 by moving to a position where it intersects with the fixed blade 19. Here, the second elevating device 21 may be any type of device, such as a hydraulic cylinder or a single-axis robot, but it is preferable to use an air cylinder, which is easy to adjust the pressing force of the blade and is inexpensive.

A first guide plate 22 is provided between the fixed blade 19 and the conveyance roller 16, and a second guide plate 23 is provided downstream of the fixed blade 19. Further, the first guide plate 22 and the second guide plate 23 are arranged to support the packaging material 13 from below.

Above the second guide plate 23, the shaped activated carbon 2 whose cylindrical side surface is gripped by a first chuck 24 is arranged, and the first chuck 24 is moved in the Y direction in the figure by a transport device (not shown). It has a structure that allows it to be raised and lowered. Here, the first chuck 24 may be of any drive type, such as an electromagnetic type or a hydraulic type, but an air-driven type is preferable because it is easy to adjust the gripping force and is inexpensive.

A heater 25 is arranged below the second guide plate 23. The heater 25 is connected to a third lifting device 26 and can freely move up and down in the Y direction, and is configured to be pressed against the lower surface of the shaped activated carbon 2 when the heater 25 is raised by the third lifting device 26. It has become. The length of the heater 25 may be a length spanning the entire length of the shaped activated carbon 2 in the longitudinal direction, and may be longer than the entire length of the shaped activated carbon 2 in the longitudinal direction. Further, the heater 25 is arranged at a position where it does not interfere with the second guide plate 23 when raised by the third lifting device 26. Here, as the third elevating device 26, any device such as a hydraulic cylinder or a single-axis robot may be used, but it is preferable to use an air cylinder, which is easy to adjust the pressing force against the molded activated carbon and is inexpensive.

The heater 25 may be made of any metal, such as aluminum or copper, as long as it can withstand the operating temperature, but stainless steel, which has high rust resistance and is resistant to scratches, is recommended for long-term use. Then it is preferable.

Furthermore, in order to prevent the packaging material 13 from melting and adhering to the heater 25 when the heater 25 is pressed against the molded activated carbon, the contact surface of the heater 25 with the packaging material 13 is coated with a silicone material that increases releasability. It is practically preferable to perform a fluorine-based surface treatment.

The heater 25 is electrically connected to a temperature control device 27 which is a temperature control means, and measured temperature data is transmitted to the temperature control device 27 by a thermocouple (not shown) built into the heater 25. By doing so, the temperature of the heater 25 is controlled. When changing temperature conditions, input the appropriate set temperature into the operation panel 28 electrically connected to the temperature control device 27, and the temperature will be transmitted to the temperature control device 27, controlling the heater 25 and changing the temperature. can.

Next, refer to FIG. FIG. 3 is a front view of the device 10 for wrapping packaging material around molded activated carbon, as seen from direction A in FIG. However, everything disposed upstream from the fixed blade 19 is omitted.

A pair of pins 29 are arranged on the outside of both longitudinal ends of the shaped activated carbon 2 so as to coincide with the axis of the shaped activated carbon 2. The pin 29 has a stepped shape, and the outer diameter D1 of the tip portion is smaller than the inner diameter d of the cylindrical member 3, and the outer diameter D2 of the root portion is larger than the inner diameter d of the cylindrical member 3.

The pin 29 is connected to the motor 31 via the first connection plate 30, and the axis of rotation of the motor 31 and the pin 29 are aligned. Further, a second chuck 33 is provided on the first connecting plate 30 via a first moving device 32, and the second chuck 33 can be moved in the X direction in the figure, and can be moved by the rotation of the motor. The second chuck 33 is configured to rotate.

Furthermore, referring to FIG. 4 which shows the peripheral area of the second chuck 33 in detail, the second chuck 33 is equipped with a chuck hand 34, and when the second chuck 33 is open, the chuck hand 34 is When the packaging material 13 is inserted between them (the state of (a) in FIG. 4) and the second chuck 33 is closed, the chuck hand 34 is located inside the outer diameter of the formed activated carbon 2 (the state of (a) in FIG. 4). b)). Thereby, when the packaging material 13 is wrapped in an overlapping manner, interference between the packaging material 13 wound above and the chuck hand 34 can be prevented.

Referring again to FIG. 3, the first moving device 32 may be any type of device such as a hydraulic cylinder or a single-axis robot, but the stroke adjustment is easy and the arrangement of the equipment shown in the figure can be easily realized. Similarly, it is preferable to use a cylinder-type single-axis robot with a rod. Further, the second chuck 33 may be driven by any type of driving method such as electromagnetic type or hydraulic type, but an air driven type is preferable because the gripping force can be easily adjusted and is inexpensive. Further, the motor 31 may be any type of motor such as an inverter motor or a stepping motor, but it is preferable to use a servo motor whose operation is highly reproducible in order to maintain a constant amount of wrapping of the packaging material.

The motor 31 is connected to a second moving device 36 via a second connection plate 35, and is freely movable in the X direction in the figure. Here, the second moving device 36 may be of any type, such as a hydraulic cylinder or an air cylinder, but even if the total length of the molded activated carbon changes due to product changes, etc., the stopping position of the pin 29 can be easily changed. It is preferable to use a single-axis robot that can

[How to wrap packaging material around shaped activated carbon]
Next, with reference to FIGS. 5A, B, C, D, and E, a method for wrapping a packaging material around molded activated carbon, in which a packaging material 13 is wrapped around molded activated carbon 2 using a packaging material wrapping device 10 around molded activated carbon, will be described. The steps shown in steps 1 to 10 will be explained one by one. FIGS. 5A, B, C, D, and E are explanatory diagrams showing step-by-step an embodiment of a method for wrapping a packaging material around shaped activated carbon.

Looking at FIG. 5A(a), the right side of the figure shows a schematic side view of the apparatus 10 for wrapping packaging material around molded activated carbon, and the left side of the figure shows a schematic front view of the schematic side view seen from direction F. There is. Note that the schematic front view is drawn with some parts omitted, and the shape is symmetrical with respect to the line kk.

First, looking at the side view, the packaging material 13 wound into a roll is unwound from the unwinding machine 15, passes through the tension applying roller 12 and the guide roller 11, and is wound around the conveyance roller 16. A nip roller 17 connected to a first elevating device 18 is provided above the conveyance roller 16, and a fixed blade 19 is installed on the lower side of the packaging material 13 on the downstream side of the conveyance roller 16 to remove the packaging material. A movable blade 20 is arranged above the blade 13. The movable blade 20 is connected to a second lifting device 21 , and a first guide plate 22 is arranged between the fixed blade 19 and the conveyance roller 16 . Further, on the downstream side of the fixed blade 19, a heater 25 connected to the second guide plate 23 and the third lifting device 26 is arranged. Further, above the heater 25, the shaped activated carbon 2 held by the first chuck 24 is arranged.

Next, when looking at the front view seen from direction F, the pin 29 is connected to the motor 31 via the first connection plate 30 on the upper side surface of the heater 25, and the pin 29 is connected to the motor 31 via the first connection plate 30. A second chuck 33 is connected to via a first moving device 32 . Furthermore, the motor 31 is connected to a second moving device 36 via a second connecting plate 35 .

<Step 1> (Situation in (a) of Figure 5A)
This is a preparation process. The tension applying roller 12 is at the uppermost position Zm, and the nip roller 17 is pressed against the conveyance roller 16 to grip the packaging material 13. The leading end of the packaging material 13 is cut at the position of the fixed blade 19, and the movable blade 20 is waiting at the uppermost position. Further, the heater 25 is heated to a predetermined temperature and is on standby at the lowest position.

Further, the first chuck 24 grips the shaped activated carbon 2 in a closed state, and is kept waiting at the uppermost position by a transport device (not shown). On the other hand, the first moving device 32 is waiting at the left end position, and the second chuck 33 is open. The motor 31 makes the second chuck 33 wait at the bottom dead center position, and the second moving device 36 waits at the right end position.

<Step 2> (Situation in (b) of Figure 5A)
This is the packaging material supply process. The unwinding machine 15 and the conveying roller 16 are driven to send out the packaging material 13 at the same feeding speed, and only the conveying roller 16 stops at the position where the leading end of the packaging material 13 protrudes from the second guide plate 23. Next, the tension imparting roller 12 descends to a preparation position which is L/2 below the initial position Zm, where L is the length of the packaging material 13 required to wrap one piece of shaped activated carbon 2. When the tension applying roller 12 reaches Zp, the unwinding machine 15 stops.
Then, the first chuck 24 is lowered by a transport device (not shown) and waits at a position where the axis of the cylindrical member 3 and the axis of the pin 29 coincide.

<Step 3> (Situation in (c) of Figure 5B)
This is a packaging material gripping process. The second moving device 36 moves to insert the pin 29 inside the cylindrical member 3, and the second moving device 36 stops at a position where the stepped portion of the pin 29 and the cylindrical member 3 come into contact. Next, the second chuck 33 closes and grips the packaging material 13 protruding from the axial end of the shaped activated carbon 2. Then, after the first chuck 24 opens and releases the grip on the shaped activated carbon, the first chuck 24 is raised and retracted by a transport device (not shown).
<Step 4> (Situation in (d) of Figure 5B)
This is a step of pulling the packaging material 13. The first moving device 32 moves outward in the axial direction of the shaped activated carbon 2 and pulls the packaging material 13 held by the second chuck 33 in the same direction.

<Step 5> (Situation in (e) of Figure 5C)
This is a step of applying tension to the packaging material 13. The first elevating device 18 rises and the nip roller 17 separates from the conveyance roller 16, and the tension in the conveyance direction generated by the tension applying roller 12 acts on the packaging material 13 downstream of the conveyance roller 16.

<Step A6> (Situation of (f) in Figure 5C)
This is a step of wrapping the packaging material around the shaped activated carbon 2. The motor 31 rotates, and the packaging material 13 gripped by the second chuck 33 is wound around the outer periphery of the shaped activated carbon 2 . Then, the motor 31 stops when the wrapped packaging material 13 overlaps the lower part of the shaped activated carbon 2. During this time, the tension applying roller 12 rises to the uppermost position Zm located above by L/2, where L is the length of the packaging material required to wrap one piece of shaped activated carbon 2, and then stops.

<Step 7> (Situation in (g) of Figure 5D)
This is a welding process for the packaging material 13. After the third elevating device 26 is raised and the heated heater 25 is pressed against the portion of the lower part of the formed activated carbon 2 where the packaging material 13 overlaps for a predetermined period of time over the entire length of the formed activated carbon 2 in the longitudinal direction. , the third lifting device 26 is lowered, and the heater 25 is retracted to the lower end position.

<Step A8> (Situation of (h) in Figure 5D)
This is a cutting process of the packaging material 13. By lowering the first elevating device 18, the nip roller 17 is pressed against the conveyance roller 16 and the packaging material 13 is gripped. Then, the second chuck 33 is opened and the first moving device 32 is moved axially outward of the shaped activated carbon 2, thereby retracting the second chuck 33 from the end position of the packaging material 13.
Next, the second elevating device 21 descends, the movable blade 20 rubs against the fixed blade 19, and the packaging material 13 is cut, and then the second elevating device 21 ascends and the movable blade 20 moves to the upper end. do.

<Step 9> (Situation of (i) in Figure 5E)
This is an end treatment step for the packaging material 13. The motor 31 is rotated so that the cutting edge of the packaging material comes to the bottom dead center of the shaped activated carbon 2. Next, the third elevating device 26 rises, and after pressing the heated heater 25 against the cutting edge of the packaging material 13 for a predetermined period of time, the third elevating device 26 descends, and the heater 25 reaches the lower end. Evacuate to position.

<Step 10> (Situation (j) in Figure 5E)
This is a step of taking out the shaped activated carbon 2. After the first chuck 24 is lowered by a transport device (not shown), the first chuck 24 is closed and the outer circumference of the shaped activated carbon 2 is gripped. Next, the second moving device 36 moves outward in the axial direction of the shaped activated carbon 2, thereby pulling out the pin 29 from the inside of the cylindrical member 3 and retracting it. Then, the first chuck 24 is raised by a transport device (not shown), and the shaped activated carbon 2 is transported out.

In one embodiment of the method for wrapping a packaging material around molded activated carbon of the present invention, both ends of the packaging material 13 that protrude from both ends of the molded activated carbon 2 in the axial direction are gripped by the second chuck 33. The packaging material 13 can be wrapped around the outer periphery of the shaped activated carbon 3 while applying high tension in the transport direction by firmly gripping the leading end of the material 13 and pulling the packaging material 13 from the upstream side.

Furthermore, by using the first moving device 32, before applying tension in the transport direction of the packaging material 13, the second chuck 33 that grips both ends of the packaging material 13 is moved in the width direction of the packaging material 13. It can be moved.

As a result, the leading portion of the packaging material 13 can be pulled in advance in the width direction of the packaging material 13, so that when tension is later applied to the packaging material 13 in the transport direction, the leading portion of the packaging material 13 is not deformed. This makes it possible to prevent the shaped activated carbon 2 from floating up from the surface layer, and to produce a shaped activated carbon cartridge with a high-quality appearance. The reason for this will be explained in detail below.

The packaging material 13 is often made of stretchable material such as non-woven fabric, and in this case, as shown in FIG. When tension T is applied in the conveying direction of the packaging material 13 without applying any tension to it, deformation will be concentrated in the central part of the packaging material 13 far from the grips at both ends, and the packaging material 13 will be removed from the surface layer of the shaped activated carbon 2. It becomes a floating state. In this state, when the packaging material 13 is wrapped around the shaped activated carbon 2, the deformed and raised packaging material 13 is rolled inside while maintaining its shape. When the packaging material 13 is a nonwoven fabric, the inner layer of the packaging material 13 can be seen through the overlapped portion, resulting in a disordered appearance.

Therefore, by stretching the leading portion of the packaging material 13 sufficiently in the width direction in advance, even if tension is applied later in the conveying direction, the packaging material 13 cannot be stretched any further, thereby preventing it from deforming and lifting up. can do.

By using the second chuck 33 equipped with the first moving device 32 described above, it is possible to prevent the leading end of the packaging material 13 from lifting up, so that the leading end of the packaging material 13 is aligned with the molded activated carbon. The material can be wrapped in close contact with the material, and as a result, the appearance can be prevented from being disturbed.

The nonwoven fabric that can be applied to the packaging material 13 of the present invention may be any fabric made by any manufacturing method as long as it can capture activated carbon that falls off during water flow after the water purification filter is assembled into the water purifier main body. It may be appropriately selected from nonwoven fabrics made by known methods such as a bond method, a melt blow method, a thermal bond method, a chemical bond method, a needle punch method, and a spunlace method. In addition, since the nonwoven fabric is used for water purification purposes, any material can be used as long as it is water resistant. Typical examples include polyester, polyethylene, polypropylene, nylon, and acrylic. It may be used as a mixture of two or more types.

An embodiment of the apparatus for wrapping a packaging material around shaped activated carbon of the present invention will be described below, but the content of the present invention is not limited thereto.

[Example 1]
As a device for wrapping packaging material around molded activated carbon, a packaging material wrapping device 10 for molded activated carbon shown in FIG. Welded and fixed the parts.

First, the tension applying roller 12 was made of stainless steel and had a diameter of 50 mm and a width of 200 mm, and was fixed to a movable part of a linear guide 14 having a maximum stroke of 150 mm. The tension applying roller 12 was adjusted using a weight (not shown) so that a tension of 500 gf was generated in the transport direction of the packaging material 13.

The guide rollers 11 were made of stainless steel and had a diameter of 50 mm and a width of 200 mm, and two guide rollers were arranged on both sides of the tension applying roller 12 so that the angle at which the nonwoven fabric was wrapped around the tension applying roller 12 was 180 degrees. .

Further, the conveyance roller 16 was made of stainless steel and had a diameter of 100 mm and a width of 200 mm, and a third guide roller 11 was arranged below the conveyance roller 16 so as to wrap the packaging material 13 at an angle of 150 degrees. The nip roller 17 disposed above the conveyance roller 16 is made of stainless steel and has a diameter of 40 mm and a width of 200 mm, and a 3 mm thick NBR rubber layer is provided on the surface layer. Connected to air cylinder.

Next, the fixed blade 19 and the movable blade 20 each had an effective cutting length of 230 mm, and an air cylinder was connected to the movable blade 20 as a second lifting device 21.

Further, the heater 25 used had a width of 3 mm at the contact part with the shaped activated carbon 2 and a length of 155 mm, and was connected to an air cylinder as a third lifting device 26.

The shaped activated carbon 2 is formed by wrapping and welding a polyester non-woven fabric around the outer circumference of a polypropylene lattice-like frame, and applying a wet process to the outer circumference of a cylindrical member 3 having an inner diameter of 12 mm, an outer diameter of 14 mm, and a length of 150 mm. Activated carbon having a diameter of 30 mm was deposited in a cylindrical shape on the outer periphery using a molding method, and then dried in an oven at 100 degrees Celsius for 5 hours.

Then, as the packaging material 13, a polyester nonwoven fabric roll with a width of 160 mm and a winding amount of 1000 m was attached to the unwinding machine 15, and the temperature of the heater 25 was set at 190 degrees using the operation panel 28.

Since the nonwoven fabric was wound around the shaped activated carbon 2 one and a half times, the required length L of the nonwoven fabric is as follows.
L = 30mm x 3.14 (pi) x 1.5 (circumference) = 141.3mm
becomes. Since the amount of descent of the tensioning roller is L/2,
L/2=141.3mm÷2=70.65mm
becomes. Therefore, the winding of the nonwoven fabric was started after setting the control device (not shown) so that the unwinding machine 15 would stop when the amount of descent of the tension applying roller 12 was 70.65 mm.

First, after the shaped activated carbon 2 was transferred from the first chuck 24 to the pin 29, the nonwoven fabric was fed out, and when the tensioning roller 12 was lowered by 70.65 mm from the initial position, the supply of the nonwoven fabric was stopped.

Next, the nonwoven fabric protruding from the end of the shaped activated carbon 2 by 5 mm on one side was gripped by the second chuck 33, and the first moving device 32 pulled the nonwoven fabric by 1.5 mm in the width direction. Then, the nip roller 17 was raised, and while applying a tension of 500 gf, the nonwoven fabric was wrapped 1.5 times around the outer circumference of the shaped activated carbon. Then, after the heater 25 was pressed for 1.0 seconds and the nonwoven fabrics were welded together, the movable blade 20 was moved up and down to cut the nonwoven fabric.

Finally, the shaped activated carbon 2 is rotated so that the end of the cut nonwoven fabric is placed above the heater 25, and after pressing the heater 25 for 1.0 seconds, the shaped activated carbon 2 is gripped by the first chuck 24. and was carried out.

By repeating this operation, a total of 100 pieces of shaped activated carbon 2 were wrapped with the nonwoven fabric.

During the winding operation of 100 pieces, the nonwoven fabric never came off or shifted from the second chuck 33 due to tension, and in all 100 pieces, tension was applied to the outer periphery of the shaped activated carbon 2 to wrap the nonwoven fabric. I was able to do that.

In addition, as a result of visually checking the formed activated carbon 2 after the nonwoven fabric wrapping process was completed, it was possible to see through the underlying nonwoven fabric in the areas where the nonwoven fabrics overlapped, but all 100 nonwoven fabrics were in a straight line at the leading part. It was rolled up in an orderly manner, and the appearance quality was good.

From this, the method of wrapping packaging material around molded activated carbon using the packaging material wrapping device 10 around molded activated carbon can be used without disturbing the appearance of the overlapping area of nonwoven fabrics caused by the deformation of the leading portion of the nonwoven fabrics. It was found that by firmly grasping the leading portion of the nonwoven fabric with a zipper, it was possible to apply high tension to the nonwoven fabric and wrap it around the shaped activated carbon.

[Reference example 1]
100 pieces of nonwoven fabric were wrapped around shaped activated carbon using the same shaped activated carbon, the same nonwoven fabric, the same device, and the same method as in Example 1, except that the amount of tension of the nonwoven fabric in the first moving device 32 was 0 mm.

As a result, out of 100 winding operations, the nonwoven fabric came off or shifted from the second chuck 33 due to tension zero times. However, as a result of visual confirmation of the formed activated carbon 2 after the wrapping process of the nonwoven fabric was completed, it was found that when looking through the lower nonwoven fabric at the place where the nonwoven fabrics overlapped, in all 100 pieces, the leading part of the nonwoven fabric was deformed. 2, and all 100 of them failed the visual inspection.

From the results of Example 1 and Reference Example 1, it can be seen that if the appearance quality is not concerned, it is possible to wrap the nonwoven fabric by applying tension to the outer periphery of the shaped activated carbon without first stretching the nonwoven fabric in the width direction.

At the same time, by pulling the leading portion of the nonwoven fabric in the width direction in advance, it is possible to prevent the nonwoven fabric from deforming when tension is applied in the conveying direction, and as a result, it is possible to prevent disturbances in appearance at the overlapped portions of the nonwoven fabric. It's obvious.

1 Replacement water purification cartridge 2 Molded activated carbon 3 Cylindrical member 4 Non-woven fabric 5 End cap 6 Channel 7 O-ring 10 Device for wrapping packaging material around molded activated carbon 11 Guide roller 12 Tension imparting roller 13 Packaging material 14 Linear guide 15 Unwinding machine 16 Conveyance roller 17 Nip roller 18 First lifting device 19 Fixed blade 20 Movable blade 21 Second lifting device 22 First guide plate 23 Second guide plate 24 First chuck 25 Heater 26 Third lifting device 27 Temperature control device 28 Operation panel 29 Pin 30 First connection plate 31 Motor 32 First movement device 33 Second chuck 34 Chuck hand 35 Second connection plate 36 Second movement device

Claims (2)

A device used for manufacturing a shaped activated carbon cartridge in which a packaging material is wrapped around the outer periphery of a cylindrical shaped activated carbon, and for wrapping the packaging material around the shaped activated carbon,
a packaging material conveying means that intermittently sends out the packaging material;
A mechanism that holds both ends in the width direction of the packaging material sent out by the packaging material conveyance means, which holds the packaging material at the part where it is rolled up and protrudes from the molded activated carbon, and while it is held, the packaging material is an edge holding mechanism that can move outward in the width direction and move along the circumferential direction of the shaped activated carbon until the packaging materials overlap;
packaging material tension applying means for applying tension across the entire width of the packaging material held by the end holding mechanism in a direction opposite to the direction in which the packaging material conveying means sends out;
a heater for thermally welding the overlapping portion of the packaging material wound around the outer periphery of the shaped activated carbon over the entire length of the shaped activated carbon in the longitudinal direction;
a cutting mechanism that cuts a portion of the packaging material that has been thermally welded by the heater that is not wrapped around the shaped activated carbon over the entire width;
A packaging material wrapping device for formed activated carbon. A method for producing a shaped activated carbon cartridge in which a packaging material is wrapped around the outer periphery of a cylindrical shaped activated carbon, the method comprising:
a packaging material supply step of intermittently feeding the packaging material toward the shaped activated carbon;
a packaging material gripping step of gripping the portions of the sent-out packaging material that protrude from the formed activated carbon and are rolled at both ends in the width direction of the leading portion of the packaging material;
While holding both ends of the packaging material in the width direction,
a pulling process of pulling both ends of the packaging material outward in the width direction;
a tensioning step of pulling the packaging material across its entire width in a direction opposite to the sending direction in the packaging material supplying step;
a winding step of wrapping the packaging material around the outer periphery of the shaped activated carbon until the packaging materials overlap;
a welding step of thermally welding the overlapping portions of the packaging material over the entire longitudinal length of the shaped activated carbon;
a cutting step of cutting a portion of the packaging material that is not wrapped around the shaped activated carbon over the entire width;
A method for manufacturing a molded activated carbon cartridge in which the steps are performed in this order.

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