KR20190012655A - Method for cutting round bar shaped water purifying filter - Google Patents

Abstract

Disclosed is a method for cutting a rod-shaped water filter having a filter sheet wound around an outer periphery of a hollow pipe. The disclosed rod-shaped water filter cutting method includes a loading step of loading a rod-shaped water filter in parallel with a pair of receiving rollers between a pair of receiving rollers extending in parallel to each other, a chucking step of pressing both ends of the hollow pipe of the rod-shaped water filter placed and supported on the support rollers with a pair of chucking portions so as to hold the rod-shaped water filter to be capable of rotating and not to move in its longitudinal direction, a rotation step of rotating the support rollers in the same direction such that the rod-shaped water filter is rotated by friction therewith, a cutter blade lowering step of lowering the cutter blade toward the rotating rod-shaped water filter such that the rod-shaped water filter is cut by sequential penetration of the edge-wound filter sheet at the end of the cutter blade and the hollow pipe, and a chucking release step of separating the chucking portions at both ends of the hollow pipe before the cutting of the hollow pipe is completed after the edge penetrates the hollow pipe.

Description

TECHNICAL FIELD [0001] The present invention relates to a method for cutting a rod-

The present invention relates to a method of cutting a bar type water filter to produce a filter module for use in a water purifier.

Purifier is a device that filters purified pollutants from raw water supplied from outside and supplies clean purified water. The water purifier can be classified according to the filtering method. For example, the water purifier of the reverse osmosis system includes a cylindrical filter module inside. However, the cylindrical filter module is not limited to the reverse osmosis water purifier.

The cylindrical filter module includes a collector pipe in the form of a hollow pipe and a filter sheet wound around the outer circumferential surface of the collector pipe. A method of manufacturing a cylindrical filter module typically includes applying an adhesive to a filter sheet in the form of a rectangular sheet, winding the hollow pipe-type collector pipe on the outer circumferential surface thereof and curing the adhesive, Removing the filter sheet covering both longitudinal ends of the collector pipe so that both longitudinal ends of the collector pipe protrude from the filter sheet in the longitudinal direction of the collector pipe; Step, i.e., trimming.

The cost of manufacturing the cylindrical filter module is increased due to the discarded filter sheet through the trimming step, and the trimming operation itself is cumbersome. In order to solve such a problem, a long tubular water filter is formed by winding a long filter sheet on an elongated hollow pipe with an adhesive and cutting the tubular water filter into a plurality of cylindrical filter bodies A method of manufacturing a cylindrical filter module by fixing a cap to both ends in the longitudinal direction of the cut cylindrical body may be considered. However, in order to actually apply this, the following problems must be solved .

That is, in general, in cutting a long rod, a method in which a disk-shaped cutting tool is rotated at a high speed to cut the rod in a direction orthogonal to the longitudinal direction is applied. However, when a cutting tool that rotates at a high speed is used for cutting the long rod-shaped water filter, the cut surface of the filter sheet made of the fabric material is not smooth and the cutting quality is deteriorated. On the other hand, when a cutter using a shearing force such as scissors or drawing is used without using a cutting tool that rotates at a high speed, the cutting surface may be sloped without being smoothly cut in a direction orthogonal to the longitudinal direction, In severe cases, the centered hollow pipe may not be cut and the cutter may be damaged.

Japanese Patent Application Laid-Open No. 10-2016-0087586 Registration Utility Model No. 20-0450896

The present invention provides a method of cutting a rod-shaped water filter having a filter sheet wound around an outer periphery of a hollow pipe, which method comprises cutting a filter sheet and a hollow pipe wound together by lifting and lowering a single cutter blade .

A method for cutting a rod-like water filter having a filter sheet wound around an outer periphery of a hollow pipe, the method comprising the steps of: cutting a cut surface of a wound filter sheet and a cut surface of a hollow pipe; orthogonal to the longitudinal direction of the rod- A method for cutting a rod-shaped water filter existing on a plane is provided.

A method for cutting a rod-like water filter having a filter sheet wound and fixed on the outer periphery of a hollow pipe, the method comprising the steps of: arranging the rod-like water filter in parallel with the pair of receiving rollers Wherein the rod-like water filter is supported by a pair of support rollers, and both ends of the hollow pipe of the rod-shaped water filter supported by the pair of support rollers are pressed by a pair of chucking portions, A chucking step of rotating the rod-shaped water filter to rotate the pair of support rollers in the same direction to frictionally rotate the rod-shaped water filter, a cutter blade blade edge of the hollow fiber filter sequentially digs the wound filter sheet and the hollow pipe to cut the rod-like water filter, A cutter blade descending step of descending the cutter blade toward the rotating tubular water filter, and a cutting step of cutting the pair of chucking parts to the hollow pipe amount before the cutting of the hollow pipe is completed after the edge has digested the hollow pipe. And a chucking releasing step of separating the tubular water filter from the end thereof.

The method of cutting a rod-shaped water filter according to the present invention further comprises an idle roller pressing step of pressing the rod-like water filter to a pair of receiving rollers in close contact with a plurality of idle rollers after the chucking step, As the rod-shaped water filter rotates, the plurality of idler rollers can freely rotate by friction with the rod-shaped water filter.

The idle roller pressing step may be maintained until cutting of the hollow pipe is completed through the cutter blade descending step.

The plurality of idler rollers may include a pair of a pair of idler rollers disposed on one side and the other side adjacent to the cutter blade along a direction parallel to the longitudinal direction of the rod-like water filter.

Wherein the plurality of cutter blades are arranged in a line in parallel with the pair of receiving rollers so as to be spaced apart from each other, and the plurality of cutter blades simultaneously descend in the step of descending the cutter blade, The filter can be cut into a plurality of pieces.

The cutter blade has a disk shape and can freely rotate about a rotation axis parallel to the longitudinal direction of the pair of receiving rollers as the rod-like water filter rotates.

According to the rod-shaped water filter cutting method of the present invention, the cutter blade descends while the rod-like water filter rotates to cut the wound filter sheet and the hollow pipe together. Accordingly, the filter sheet and the hollow pipe are cut with smooth cut surfaces, and the cut surfaces of the filter sheet and the hollow pipe are orthogonal to the longitudinal direction of the rod-shaped water filter and exist on the same plane. That is, although the rod-shaped water filter formed by joining heterogeneous materials is cut by one type of cutter blade, the cutting quality is excellent. Further, since the cutter blade does not rotate at a high speed by the power supply, breakage of the cutter blade and safety accidents caused by the cutter blade are prevented.

According to the rod-shaped water filter cutting method of the present invention, both ends of the hollow pipe are chucked before the edges of the cutter blade penetrate the filter sheet to prevent shaking in the longitudinal direction of the rod-shaped water filter, The chucking is released. Therefore, the intended point is accurately cut without an error due to the shaking of the rod-shaped water filter. In addition, there is a problem in that, when the rod-type water filter is broken by the compressive force of both ends of the hollow pipe before being completely cut by the cutter blade, Accidents are prevented.

According to the preferred embodiment of the present invention, in which the plurality of cutter blades are simultaneously lowered and the rod-shaped water filter is cut into a plurality of cylindrical filter bodies, the productivity of the work is improved.

1 is a perspective view showing an example of a rod-like water filter.
Figs. 2 to 4 are perspective views showing the configuration of a cutting apparatus used for cutting a rod-shaped water filter.
5 is a cross-sectional view showing a state in which a rod is supported on the pair of receiving rollers shown in Figs. 2 to 4. Fig.
6 to 9 are sectional views sequentially illustrating a method of cutting a rod-shaped water filter according to an embodiment of the present invention.

Hereinafter, a method of cutting a rod-shaped water filter according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The terminology used herein is a term used to properly express the preferred embodiment of the present invention, which may vary depending on the intention of the user or operator or the custom in the field to which the present invention belongs. Therefore, the definitions of these terms should be based on the contents throughout this specification.

1 is a perspective view illustrating an example of a rod-like water filter. Referring to FIG. 1, the rod-like water filter 10 includes a hollow pipe 15 having a hollow pipe 16 extending in one direction, And a filter sheet 12 wound and fixed on the outer circumferential surface of the hollow pipe 15 with an adhesive. Although not shown, a plurality of drainage holes are formed on the outer circumferential surface of the hollow pipe 15 so that the water introduced into the hollow 16 is discharged to the wound filter sheet 12 side.

Figs. 2 to 4 are perspective views showing a configuration of a cutting apparatus used for cutting a rod-like water filter; Fig. 5 is a sectional view showing a state in which a rod is supported on the pair of support rollers shown in Figs. to be. 2 to 4, the cutting device 31 for cutting the rod-shaped water filter 10 (see Fig. 1) into a plurality of pieces includes a frame 33 for providing a supporting force, A pair of support rollers 53 arranged in parallel on the lower side of the support roller 53 and axially rotated in the same direction, an ascending / descending structure 47 arranged to be able to ascend and descend on the support roller 53, Five cutting units 51 installed at a lower portion of the elevating structure 47 to descend together with the elevating structure 47 to cut the rod-like water filter 10, And a pair of chucking portions (57) for pressingly supporting both ends of the water filter (10).

The frame 33 takes the form of a rectangular frame and is fixed horizontally to a work die (not shown). The structure of the frame may vary depending on the case. The pair of support rollers 53 are formed as a pair of two, extending parallel to the X-axis and spaced apart from each other. The pair of support rollers 53 are spaced apart from each other by a distance smaller than the diameter of the rod-shaped water filter 10. [ A roller shaft 53a is provided at the central shaft portion of the pair of support rollers 53. The roller shaft 53a is further extended in the longitudinal direction so that both ends thereof are supported by the frame 33. [ The roller shaft 53a is rotatably and bearingly supported with respect to the frame 33.

A roller driving part 55 is provided on the side of the frame 33. The roller driving unit 55 includes a motor 55a generating a rotational force by an electric power applied from the outside and having a drive pulley 55b on a drive shaft, a driven pulley 55b fixed to one end of each roller shaft 53a, And a belt 55d for transmitting the rotational force of the drive pulley 55b to the driven pulley 55c.

The rotational force of the motor 55a is transmitted to the pair of support rollers 53 through the belt 55d to rotate the pair of support rollers 53 in the same direction and at the same speed. 2 to 5, in order to cut the rod-shaped water filter 10, the rod-shaped water filter 10 is raised between the pair of support rollers 53 and is said to be loaded. The tubular water filter 10 supported by the pair of support rollers 53 is driven and rotated by friction with the pair of support rollers 53 when the pair of support rollers 53 are rotated. For example, when the pair of supporting rollers 53 is rotated in the clockwise direction as shown in Fig. 5, the rod-shaped water filter 10 has a virtual rod-shaped filter rotation axis SR extending in its longitudinal direction And rotates counterclockwise around the center. However, the rotation directions of the pair of support rollers 53 and the rod-like water filter 10 shown in Fig. 5 are merely illustrative.

2 to 4, the pair of chucking portions 57 are arranged such that the rod-shaped water filter 10 supported by the pair of support rollers 53 is rotated about the rod-shaped water filter rotation axis SR But both ends of the rod-like water filter 10 are pressed and supported at both ends of the hollow pipe 15 so as not to move or vibrate in the longitudinal direction of the rod-like water filter 10. Each of the pair of chucking portions 57 includes a guide rail 57a fixed to the inner wall surface of the frame 33 and extending in parallel with the Z axis and a guide rail 57a coupled to the guide rail 57a, A slider 57d slidable in the longitudinal direction, a pusher actuator 57b having a rear end fixed to the slider 57d, and a piston rod (not shown) of the pusher actuator 57b And a pusher 57c rotatably supported at the distal end thereof.

The pair of pushers 57c move in the direction parallel to the X axis of the rod-shaped water filter 10 by the action of the pusher actuator 57b while being supported at the distal end of the piston rod 57e, Approaching both ends of the water filter (10) or away from both ends of the rod-like water filter (10). The pair of pushers 57c presses both ends of the hollow pipe 15 during cutting operation of the rod-like water filter 10 to prevent vibration of the rod-shaped water filter 10 in a direction parallel to the X-axis. The pair of pushers 57c can be moved to the rod-shaped water filter 10 on the rod-shaped water filter rotation axis SR irrespective of the diameter of the rod-shaped water filter 10 because the pusher actuator 57b can be adjusted in position parallel to the Z- The center of both ends can be pressed (see Fig. 7). The pair of pushers 57c are freely rotatable with respect to the piston rod 57e so that even if the pair of pushers 57c are pressed against both ends of the hollow pipe 15, Is not disturbed.

The elevating structure 47 supports five cutting units 51 at the bottom and ascends and descends by the operation of the elevating drive unit. The elevating structure 47 includes a rectangular plate-like connecting plate 47a, And a side plate 47c connecting the connection plate 47a and the support plate 47d.

The support plate 47d is a plate-shaped member having a predetermined thickness, and a side actuator 49a is mounted on both ends of the plate-like member. The side actuator 49a is fixed to the support plate 47d, and the pressure plate 49b is pulled to maintain the interval of the cutter blade 51d. A center block 47f is fixed to the center of the bottom surface of the support plate 47d. The center block 47f serves to center the five cutting units 51. A plurality of horizontal rails 47e are provided on the bottom surface of the support plate 47d. The plurality of horizontal rails 47e are arranged symmetrically with the center block 47f interposed therebetween and extend parallel to the X axis to support the rail holder 51b in a sliding manner.

At both ends of the connecting plate 47a, a female screw holder 47b is provided. A female screw thread is formed in the female thread holder 47b and a ball screw 43 extending parallel to the Z axis passes through the female thread holder 47b and is engaged with the female thread of the female thread holder 47b . Therefore, as the ball screw 43 rotates, the lifting structure 47 moves up and down.

A plurality of vertical passages 45 are fixed to the connection plate 47a. The vertical passages 45 extend upwardly through a lifting guider 33a provided on the frame 33 as a bar-shaped member whose lower end is fixed to the connecting plate 47a. The elevating guider 33a prevents the vertical rollers 45 from swinging in the direction orthogonal to the Z-axis. In other words, the vertical movement of the lifting structure 47 is blocked.

The lifting and lowering driving unit includes a motor 35 fixed to the upper portion of the frame 33 and rotating the driving pulley 37, a driven pulley 41 fixed to the upper end of each ball screw 43, And a transmission belt 39 that connects the drive pulley 37 and the driven pulley 41 and transmits the rotational force of the motor 35 to the ball screw 43. When the rotational force of the motor 35 is transmitted to the pair of ball screws 43 via the transmission belt 39 and the driven pulley 41 so that the pair of ball screws 43 are rotated axially, The structure 47 ascends and descends. As a result, the vertical height of the lifting structure 47 can be adjusted by driving the motor 35.

The five cutting units 51 are disposed below the connecting plate 47a and descend with the elevating structure 47 to cut the rod-shaped water filter 10. Five cutting units 51 are arranged at equal intervals so as to cut the rod-shaped water filter 10 into six cylindrical pieces 21 and 23 (see Fig. 9). Among the six cylindrical pieces, a pair of cylindrical pieces 23 at both ends of the rod-shaped water filter 10 are waste pieces to be discarded, and four middle cylindrical pieces 21 Is a cylindrical filter body constituting a cylindrical filter module.

Each of the five cutting units 51 includes a cutter blade 51d, a cutter supporter 51c, a plurality of idle rollers 51e, an actuator 51k. The cutter blade 51d is disposed on the pair of support rollers 53 and cuts the rod-shaped water filter 10 supported by the pair of support rollers 53 while descending.

The cutter blade 51d is in the shape of a disk having a constant diameter and the center of the cutter blade 51d is rotatably supported by the cutter supporter 51c. The cutter blade 51d is bearably supported on the cutter supporter 51c and is freely rotatable about a virtual cutter blade rotation axis SD. The tubular water filter 10 supported by the pair of support rollers 51 rotates so that the cutter blade 51d descends while the cutter blade 51d is rotated by the friction with the rod- The tub-type water filter 10 is cut while freely rotating about the axis SD.

The cutter blade rotation axis SD extends parallel to the longitudinal direction of the pair of support rollers 51, that is, parallel to the X axis, and five cutter blades 51d extend on the cutter blade rotation axis SD And are arranged in a line. Therefore, when the ascending / descending structure 47 descends, the five cutter blades 51d descend simultaneously to cut the rod-shaped water filter 10 into the six cylindrical pieces 21, 23 (see FIG. 9).

The edge 51e of the end of the cutter blade 51d (see Figs. 6 to 9) extends along a circumferential path around the cutter blade rotation axis SD. On the contrary, if the edge of the cutter blade 51d extends in the form of sawtooth or wave, the cutter blade 51d is caught by the rotating rod-like water filter 10 and the cutter blade 51d is broken or cut The operation of the apparatus 31 can be stopped. On the other hand, the cutter blade is not limited to the freely rotatable disc cutter blade shown in Figs. 2 to 4, and for example, a cutter blade which is bent like a crescent moon, .

The plurality of idler rollers 51e are arranged so that the rod-shaped water filter 10 is moved downward so that the rod-shaped water filter 10 is brought into close contact with the pair of support rollers 53 while the cutter blade 51d cuts the rod- . The actuator 51k lifts and drives the plurality of idle rollers 51e. The plurality of idler rollers 51e are arranged in a direction parallel to the longitudinal direction of the rod-shaped water filter 10, that is, in parallel with the X axis, with a cutter blade 51d interposed therebetween, And a pair on the other side. That is, two pairs of idle rollers 51e are arranged for one cutter blade 51d, and a total of 10 pairs, that is, 20 idle rollers 51e are provided.

The plurality of idle rollers 51e come into close contact with the outer circumferential surface of the rod-like water filter 10 at the time of cutting the rod-like water filter 10, and rotate freely as the rod-like water filter 10 rotates. In addition, the idle roller 51e is rotatably supported by an arm 51f extending in a direction parallel to the Y-axis. And a pair of idle rollers 51e are supported on one arm 51f. A vertical elevating member 51h is fixed to one end of the arm 51f.

The cutter supporter 51c has a rectangular block shape. The cutter supporter 51c located at the center of the five cutter supporters 51c is fixedly coupled to the lower portion of the center block 47f and the remaining cutter supporter 51c is fixed to the bottom of the sliding plate 51a . The cutter supporter 51c fixed to the center block 47f, the so-called center cutter supporter 51c is fixed at that position without moving parallel to the X axis. The cutter blade 51d supported on the center cutter supporter 51c is aligned with the longitudinal center point of the rod-shaped water filter 10 supported by the pair of support rollers 53. [

The sliding plate 51a is a rectangular plate member and supports the remaining cutter supporters 51c other than the center cutter supporter 51c while being coupled to the lower portion of the rail holder 51b. As a result, the remaining cutter supporter 51c is coupled to and supported by the sliding plate 51a and is reciprocatable along the longitudinal direction of the horizontal rail 47e. Thus, between the five cutter supporters 51c and the five cutter blades 51d can be adjusted.

An actuator 51k is coupled to the center block 47f and the plurality of sliding plates 51a. The actuator 51k drives the arm 51f in a state of being coupled to the center block 47f and the sliding plate 51a. A vertical rail 51g is provided on one side of the actuator 51k. The vertical rail 51g supports the vertical elevating member 51h and guides the vertical movement of the vertical elevating member 51h. As a result, the plurality of idler rollers 51e are adjusted to an appropriate height by the operation of the actuator 51k and the rod-like water filter 10 is separated from the pair of support rollers 53 during the cutting operation of the rod- The rod-shaped water filter 10 is tightly pressed.

A gap holding jig 49c is further provided to maintain a constant gap between the five cutter blades 51d. The gap holding jig 49c is a flat plate member having the same size and is disposed between the center block 47f and the sliding plate 51a and between the adjacent pair of sliding plates 51a. The gap holding jig 49c located between the center block 47f and the sliding plate 51a has one end fixed to the center block 47f. The interval holding jig 49c located between the adjacent pair of sliding plates 51a is fixed at one end to one of the pair of sliding plates 51a.

The sliding plate 51a is hooked on the gap retaining jig 49c to move the jig 49c to the center block 47f The sliding plate 51a is maintained at a distance corresponding to the horizontal length of the gap holding jig 49c. The gap holding jig 49c is sandwiched between the adjacent pair of sliding plates 51a so that the five cutter blades 51d can be easily set at the same interval.

On the other hand, the side actuator 49a and the pressure plate 49b are applied as pressing means for pressing the outermost sliding plate 51a toward the center block 47f side. The side actuator 49a pulls the pressure plate 49b while being fixed to both ends of the support plate 47d so that the pressure plate 49b presses the outermost sliding plate 51a toward the center block 47f. That is, the interval between the cutter blades 51d.

6 to 9 are sectional views sequentially illustrating a method of cutting a rod-shaped water filter according to an embodiment of the present invention. The rod-shaped water filter cutting method may be performed using the cutting device 31 described with reference to Figs. 2 to 5. The rod-shaped water filter cutting method includes a loading step, a chucking step, an idle roller pressing step, a rotating step, a cutter blade descending step, and a chucking step.

2 through 6, the loading step is a step of placing the rod-shaped water filter 10 between a pair of supporting rollers 53 extending in parallel with each other. Next, in the chucking step, both ends of the hollow pipe 15 of the rod-shaped water filter 10 supported by being supported between the pair of support rollers 53 are pressed by the pair of chucking portions 57, The water filter 10 can rotate about its rotation axis SR but does not move in its longitudinal direction, i.e., in a direction parallel to the X axis.

Next, the idle roller pressing step is a step of driving the actuator 51k to press the rod-shaped water filter 10 downward so as to closely contact the pair of receiving rollers 53 with a plurality of idle rollers 51e. In some cases, the plurality of idler rollers 51e may be lowered when the cutter blade 51d starts to descend. The idle roller pressing step is continuously maintained until the cutting of the hollow pipe 15 is completed through the cutter blade descending step to be described later.

The rotating step rotates the pair of receiving rollers 53 in the same direction to cause the rod-like water filter 10 to rotate about the rod-shaped water filter rotating axis SR by friction with the receiving rollers 53 . As the rod-shaped water filter 10 rotates about the rotation axis SR, the idle water filter 10 rotates freely because the idle roller 51e freely rotates due to friction with the rod-shaped water filter 10. Therefore, And is not disturbed by the idle roller 51e.

7 to 9, the step of lowering the cutter blade is performed such that the edge 51e of the end of the five cutter blades 51d is pressed against the wound filter sheet 12 of the rod- The five cutter blades 51d are lowered so that the hollow pipe 15 is digged in order and the rod-like water filter 10 is cut off. As described above, the five cutter blades 51d are arranged to be spaced apart from each other in a line along a virtual cutter blade rotation axis SD extending parallel to the pair of support rollers 53, that is, parallel to the X axis , And each has a disk shape having the same diameter. When the elevator structure 47 is lowered by driving the motor 35 while the rod-like water filter 10 rotates, the five cutter blades 51d arranged in a row along the cutter blade rotation axis SD are simultaneously rotated Down toward the filter 10 to cut the rod-shaped water filter 10 into six pieces 21 and 23.

The five cutter blades 51d descend at the same speed while the edges 51e of the five cutter blades 51d contact the outer peripheral surface of the rod-shaped water filter 10, specifically, the outermost surface of the wound filter sheet 12 While digging, the rod-shaped water filter 10 starts to be cut as shown in Fig. At this time, the five cutter blades 51d freely rotate around the cutter blade rotation axis SD by friction with the rod-shaped water filter 10, so that the edge 51e is slid smoothly inside the rod-shaped water filter 10 The cutting is promoted, and breakage of the cutter blade 51d is suppressed. Since the rod-shaped water filter 10 continues to rotate about the rod-shaped water filter rotation axis SR, the cutter blade edge 51 edge is pushed inward from the outermost surface of the wound filter sheet 12, 12 are formed with slots 13 in a circular shape. 8, the annular slot 13 of the filter sheet 12 expands to the boundary between the hollow pipe 15 and the wound filter sheet 12 as the five cutter blades 51d continue to descend, do.

When the five cutter blades 51d continue to descend, the five cutter blade edges 51e dug the outer circumferential surface of the hollow pipe 15. Since the rod-shaped water filter 10 continues to rotate about the rod-shaped water filter rotation axis SR, an annular slot 17 is formed on the outer peripheral surface of the hollow pipe 15. 9, the annular slot 17 of the hollow pipe 15 extends to the inner peripheral surface of the hollow pipe 15, and the rod-like water filter 10 Is cut. The annular slot 13 of the filter sheet 12 and the annular slot 17 of the hollow pipe 15 are formed by one descending stroke of the five cutter blades 51d , The annular slots 13 and 17 do not deviate. As a result, the cut surfaces of the plurality of cylindrical filter bodies 21 produced by cutting the rod-shaped water filter 10 are not stepped at the boundary between the filter sheet 12 and the hollow pipe 15, .

The chucking step may be performed before the cutting of the hollow pipe 15 is completed after the edge 51e of the five cutter blades 51d has pierced the hollow pipe 15 as shown in Fig. Thereby separating the chucking portion 57 (see Fig. 2) from both ends of the hollow pipe 15. Even when the chucking of the chucking portion 57 is released because the edge 51e of the cutter blade 51d is continuously lowered in parallel with the Z axis while being stuck in the rigid hollow pipe 15, And the cutting of the rod-shaped water filter 10 can be finished with an intended correct size.

If both ends of the hollow pipe 15 are continuously pressed and pressed by the pusher 57c of the pair of chucking portions 57 until the hollow pipe 15 is completely cut off, The pressure may cause a failure in the tubular water filter 10, specifically, the hollow pipe 15 to be broken before it is cleanly cut by the cutter blade 51d, and the hollow pipe 15 may be completely cut A safety accident in which the cut cylindrical pieces 21 and 23 are protruded from the pair of support rollers 53 may occur.

Conversely, if the edge 51e of the cutter blade 51d is moved downwardly into the outer periphery of the hollow pipe 15, that is, in the wound-up filter sheet 12, the pair of chucking portions 57 When the pusher 57c of the cutter blade 51d is separated from both ends of the rod-like water filter 10, a slip occurs at the moment when the edge 51e of the cutter blade 51d pierces into the hollow pipe 15, The filter 10 may be shaken in its longitudinal direction, and in the worst case, the cutter blade 51d may be damaged.

When the five cutter blades 51d continue to descend while the chucking by the pair of chucking portions 57 is released, the annular slot 17 of the hollow pipe 15, as shown in Fig. 9, 15, and the rod-like water filter 10 is cut into six cylindrical pieces 21, 23. As described above, a pair of cylindrical pieces 23 at both ends of the tubular water filter 10 among the six cylindrical pieces 21 and 23 is a waste piece, and a middle piece excluding the waste piece 23 The four cylindrical pieces 21 of the filter body 21 become a cylindrical filter body. A cylindrical filter module mounted inside the water purifier can be manufactured by fixing a cap to both end portions in the longitudinal direction of the cylindrical filter body 21.

In Fig. 9, the dotted line CB indicates the boundary of the six cylindrical pieces 21 and 23. Since the rod-shaped water filter 10 continues to rotate around the rod-shaped water filter rotation axis SR, the cutter blade edge 51 edge does not descend from the upper end to the lower end of the rod-like water filter 10, The rodlike water filter 10 can be cut even when the inner diameter of the hollow pipe 15 is lowered only to the center portion and the inner diameter of the hollow pipe 15 is lowered so that collision between the five cutter blades 51d and the pair of support rollers 53 is prevented .

The plurality of idle rollers 51e continue to press the sticky water filter 10 downward until the rod-shaped water filter 10 is completely cut into the six cylindrical pieces 21, When the rod-shaped water filter 10 is completely cut into the six cylindrical pieces 21 and 23, the rotation of the pair of support rollers 53 is stopped, the five cutter blades 51d are raised, On the support roller 53, the four cylindrical filter bodies 21 are taken out, and the two pieces of waste pieces 23 are collectively collected or discarded or recycled.

According to the rod-shaped water filter cutting method described above, the cutter blade 51d descends while the rod-shaped water filter 10 rotates to cut the wound filter sheet 12 and the hollow pipe 15 together. Therefore, the filter sheet 12 and the hollow pipe 15 are cut with smooth cutting surfaces, and the cut surfaces of the filter sheet 12 and the hollow pipe 15 are orthogonal to the longitudinal direction of the rod- Lt; / RTI > That is, despite cutting the rod-shaped water filter 10 formed by joining heterogeneous materials with one kind of cutter blade 51 ㅇ, the cutting quality is excellent. In addition, since the cutter blade 51d does not rotate at a high speed by the power supply, damage to the cutter blade 51d and safety hazards caused thereby are prevented.

The edge 51egde of the cutter blade 51d chucks both ends of the hollow pipe 15 before the filter sheet 12 is pierced into the filter sheet 12, 10 and the chucking is released after the cutter blade edge 51 edge digs the outer circumferential surface of the hollow pipe 15. Therefore, the intended point is accurately cut without an error due to the shaking of the tubular water filter 100. Also, before the tubular water filter 10 is completely cut by the cutter blade 51d, the compressive force of both ends of the hollow pipe 15 A plurality of cutter blades 51d can be prevented from being damaged due to work being broken by the pair of support rollers 53 and safety problems in which cylindrical pieces cut at the same time as the bar- The tubular water filter 10 is simultaneously cut into the plurality of cylindrical filter bodies 21, so that the productivity of the work is improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

10: rod type water filter 12: filter sheet
15: hollow pipe 31: cutting device
51d: cutter blade 53: receiving roller
51e: idler roller 57: chuck king part

Claims (6)

A method for cutting a rod-like water filter in which a filter sheet is wound around an outer periphery of a hollow pipe,
A loading step of loading the rod-shaped water filter in parallel with the pair of receiving rollers between a pair of receiving rollers extending in parallel to each other; Wherein the rod-like water filter is supported by a pair of support rollers, and both ends of the hollow pipe of the rod-like water filter supported by the pair of support rollers are pressed to a pair of chucking portions, A chucking step of holding the substrate in a state not to be carried out; Rotating the pair of receiving rollers in the same direction to rotate the rod-shaped water filter by friction with the pair of receiving rollers; The cutter blade is lowered toward the rotating tubular water filter so that the edge of the end of the cutter blade digs the tubular filter sheet and the hollow pipe sequentially to cut the tubular water filter A cutter blade descending step; And a chucking step of spacing the pair of chucking portions at both ends of the hollow pipe before the cutting of the hollow pipe is completed after the edge digs into the hollow pipe. Cutting method. The method according to claim 1,
Further comprising: an idle roller pressing step of pressing the rod-like water filter with a plurality of idle rollers so as to be in close contact with the pair of receiving rollers after the chucking step,
Wherein the plurality of idler rollers rotate freely by friction with the rod-shaped water filter as the rod-like water filter rotates. 3. The method of claim 2,
Wherein the idle roller pressing step is maintained until cutting of the hollow pipe is completed through the lowering step of the cutter blade. 3. The method of claim 2,
Wherein the plurality of idler rollers are provided on the one side and the other side, respectively, adjacent to the cutter blade along a direction parallel to the longitudinal direction of the rod-like water filter, to press the rod-like water filter. Way. The method according to claim 1,
Wherein a plurality of cutter blades are provided, the plurality of cutter blades are arranged in a line so as to be spaced apart from each other in parallel with the pair of receiving rollers,
Wherein the plurality of cutter blades simultaneously descend in the step of descending the cutter blade to cut the rod-shaped water filter into a plurality of pieces. The method according to claim 1,
The cutter blade is in the form of a disk,
Wherein the cutter blade rotates freely about a rotation axis parallel to the longitudinal direction of the pair of support rollers as the rod-like water filter rotates.

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