KR102036537B1 - Method for cutting round bar shaped water purifying filter - Google Patents

Abstract

Disclosed is a method of cutting a rod-type purified water filter in which a filter sheet is wound around a hollow pipe. The disclosed rod-type water filter cutting method includes a loading step of placing a rod-type water filter in parallel with a pair of support rollers between a pair of support rollers extending in parallel to each other, and being supported between a pair of support rollers. A chucking step of pressing the both ends of the hollow pipe of the rod-type purified water filter with a pair of chucking portions, so that the rod-type purified water filter can be rotated so as not to move in its longitudinal direction, a pair Rotation step of rotating the rod-type water filter by friction with them by rotating the support roller in the same direction, and digging into the filter sheet and the hollow pipe in which the edge of the cutter blade is wound in sequence Cutter blade lowering step of lowering the cutter blade toward the rotating rod water filter to cut the rod water filter, and the edge is hollow pipe Before coming into the subsequent cutting of the hollow pipe it is completed, and a step of releasing chucking spaced in pairs chucking a hollow portion both ends of the pipe.

Description

Method for cutting round bar shaped water purifying filter}

The present invention relates to a method of cutting a rod-shaped water filter in order to manufacture a filter module for use in a water purifier.

Water purifier is a device that supplies purified water purified by filtering various contaminants from raw water supplied from the outside. The water purifiers may be classified according to the filtering method, and among them, for example, the reverse osmosis water purifier includes a cylindrical filter module therein. However, the cylindrical filter module is not limited to the reverse osmosis water purifier.

The cylindrical filter module includes a hollow pipe-shaped collection pipe and a filter sheet wound around an outer circumferential surface of the collection pipe. In general, a method of manufacturing a cylindrical filter module may include applying an adhesive to a filter sheet in the form of a square sheet, winding the outer circumferential surface of the hollow pipe-type collecting pipe and curing the adhesive so that the connector sheet is housed. Fixing the filter sheet so as not to be released from the water pipe, and cutting and removing the filter sheet covering both longitudinal ends of the water collecting pipe so that both ends of the water collecting pipe protrude from the filter sheet in the lengthwise direction of the water collecting pipe. Step, ie trimming.

The filter sheet discarded through the trimming step increases the manufacturing cost of the cylindrical filter module, and the trimming operation itself is cumbersome. In order to improve this problem, the long filter sheet is wound on the long hollow pipe with an adhesive to form a long rod-type water filter, and the rod-type water filter is cut into a plurality of cylindrical filter bodies. In this case, a method of manufacturing a cylindrical filter module by fixedly coupling caps to both ends of the longitudinal cylindrical body of the cut cylindrical filter body may be considered, but the following problems should be solved in order to apply the same. .

That is, generally, in the operation | work which cuts a long bar, the method of cutting a bar in the direction orthogonal to the longitudinal direction is applied by rotating a disk-shaped cutting tool at high speed. However, when a cutting tool rotating at high speed is used for cutting the long rod-type water filter, the cut surface of the filter sheet made of a textile material is not smooth and the cutting quality is degraded. On the other hand, when using a cutter that uses a shearing force, such as scissors, small head without using a cutting tool that rotates at high speed, the cutting surface may be inclined without being smoothly cut in a direction perpendicular to the longitudinal direction, In severe cases, the centrally arranged hollow pipe may not be cut and the cutter may be damaged.

Patent Publication No. 10-2016-0087586 Utility Model Registration No. 20-0450896

The present invention provides a method for cutting a rod-type water filter in which a filter sheet is wound around a hollow pipe, and a rod-type water filter cutting method for cutting the filter sheet and the hollow pipe wound together by lifting and lowering of one cutter blade. .

The present invention relates to a method of cutting a rod-type water filter in which a filter sheet is wound around a hollow pipe, wherein the cut surface of the wound filter sheet and the cut surface of the hollow pipe are smooth and perpendicular to the longitudinal direction of the rod-type water filter. Provided are methods for cutting rod-shaped water filters present on a plane.

The present invention relates to a method of cutting a rod-type water filter in which a filter sheet is wound around a hollow pipe, wherein the rod-type water filter is parallel to the pair of support rollers between a pair of support rollers extending in parallel to each other. Loading step, by pressing both ends of the hollow pipe of the rod-type water filter supported between the pair of supporting rollers with a pair of chucking portion, the rod-type water filter can be rotated A chucking step of holding it so as not to move in its longitudinal direction, a rotating step of rotating the pair of support rollers in the same direction to rotate the rod-type water filter by friction with them, and a cutter blade. so that the edges of the ends of the blades sequentially dig the wound filter sheet and the hollow pipe to cut the rod-type water filter, The cutter blade lowering step of lowering the cutter blade toward the rotating rod-type water filter, and before the cutting of the hollow pipe is completed after the edge is dug into the hollow pipe, the pair of chucking parts is removed from the hollow pipe. Provided is a rod-type water filter cutting method comprising a chucking step of separating the steps.

The rod-type water filter cutting method of the present invention, after the chucking step, further comprises an idle roller pressurizing step of pressing the rod-type water filter to be in close contact with the pair of support rollers with a plurality of idle rollers, As the rod-type water filter rotates, the plurality of idle rollers may freely rotate by friction with the rod-type water filter.

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

The plurality of idle rollers may be provided in pairs on one side and the other side close to the cutter blade along a direction parallel to the longitudinal direction of the rod-type water filter to pressurize the rod-type water filter.

The cutter blades are provided with a plurality, the plurality of cutter blades are arranged in a row spaced apart from each other in parallel with the pair of the support roller, the cutter blades in the step of lowering the cutter blade at the same time to the rod-shaped integer The filter can be cut into a plurality of pieces.

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

According to the rod-type water filter cutting method of the present invention, the cutter blade is lowered while the rod-type water filter is rotated to cut the wound filter sheet and the hollow pipe together. Thus, the filter sheet and the hollow pipe are cut with a smooth cut surface, and the cut surface of the filter sheet and the hollow pipe is orthogonal to the longitudinal direction of the rod-type water filter and is coplanar. That is, the cutting quality is excellent even though the rod-type water filter formed by joining dissimilar materials is cut with one kind of cutter blade. In addition, since the cutter blade does not rotate at high speed by the power supply, breakage of the cutter blade and a safety accident due to it are prevented.

According to the rod-type water filter cutting method of the present invention, the edges of the cutter blade are chucked at both ends of the hollow pipe before the edge of the cutter blade penetrates the filter sheet, thereby preventing longitudinal shaking of the rod-type water filter, and the edge of the cutter blade is hollow pipe. Release the chuck after digging into the outer circumferential surface. Therefore, the intended point is cut accurately without errors due to the shake of the rod-type water filter. In addition, the failure of work broken by the compressive force on both ends of the hollow pipe before the rod-type water filter is completely cut by the cutter blade, or the safety of the cylindrical pieces cut off at the same time as the rod-type water filter is cut off from the pair of support rollers Accidents are prevented.

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

1 is a perspective view illustrating an example of a rod-type water filter.
2 to 4 are perspective views showing the configuration of a cutting device used for cutting a rod-type water filter.
FIG. 5 is a cross-sectional view illustrating a rod being supported by a pair of support rollers of FIGS. 2 to 4.
6 to 9 are cross-sectional views sequentially showing a rod-type water filter cutting method according to an embodiment of the present invention.

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

1 is a perspective view showing an example of a rod-type water filter, referring to the rod-shaped water filter 10 is elongated in one direction, the hollow pipe 15 is formed with a hollow (16) in the longitudinal direction And a filter sheet 12 wound and fixed by an adhesive on an outer circumferential surface of the hollow pipe 15. Although not shown, a plurality of drain holes are formed on the outer circumferential surface of the hollow pipe 15 so that water introduced into the hollow 16 is discharged toward the wound filter sheet 12.

2 to 4 are perspective views showing the configuration of a cutting device used for cutting a rod-type water filter, and FIG. 5 is a cross-sectional view showing a rod supported by a pair of support rollers of FIGS. 2 to 4. to be. 2 to 4 together, the cutting device 31 for cutting the rod-type water filter 10 (see Fig. 1) into a plurality of pieces, the frame 33 for providing a support force and the frame 33 And a pair of support rollers 53 arranged side by side on the lower side of the support roller axially rotating in the same direction, and a lift structure 47 arranged to be able to move up and down on the support roller 53, and the lift structure ( An elevating drive unit for elevating the movement 47), five cutting units 51 installed in the lower portion of the elevating structure 47 and being lowered together with the elevating structure 47 to cut the rod-type water filter 10; It includes a pair of chucking portions (57) for pressing and supporting both ends of the water filter (10).

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

The side of the frame 33 is provided with a roller driver 55. The roller drive unit 55 generates a rotational force by electric power applied from the outside, and has a motor 55a having a drive pulley 55b on the drive shaft, and a driven pulley fixed to one end of each roller shaft 53a ( 55c 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 together, in order to cut the rod-type water filter 10, the rod-type water filter 10 is mounted between a pair of supporting rollers 53, and it is said to be loaded. The rod-type water filter 10 supported by and supported by the pair of support rollers 53 is driven by friction with the pair of support rollers 53 when the pair of support rollers 53 rotates. For example, when the pair of support rollers 53 are rotated clockwise as shown in FIG. 5, the rod-type water filter 10 may move the virtual rod-type water filter rotation axis SR extending in its longitudinal direction. Rotate counterclockwise around the center. However, the rotation direction of the pair of support rollers 53 and the rod-type water filter 10 shown in FIG. 5 is merely exemplary.

2 to 4 together, a pair of chucking unit 57 is a rod-type water filter 10 supported by a pair of support rollers 53 rotates around the rod-type water filter rotation axis (SR). Although it is possible, the both ends of the rod-type water filter 10, specifically, the both ends of the hollow pipe 15 is pressurized so as not to move or vibrate in the longitudinal direction of the rod-type water filter 10. Each of the pair of chucking portions 57 is fixed to an inner wall surface of the frame 33 and extends in parallel with the Z axis, and is coupled to the guide rails 57a to form a guide rail 57a. Slider 57d slidable in the longitudinal direction, a pusher actuator 57b whose rear end is fixed to the slider 57d, and a piston rod of the pusher actuator 57b ( 57e) is provided with a pusher 57c rotatably bearing supported at its distal end.

Each of the pair of pushers 57c is supported at the end of the piston rod 57e and moves in a direction parallel to the X axis of the rod-type water filter 10 by the operation of the pusher actuator 57b. Both ends of the water filter 10 are approached or away from both ends of the rod-shaped water filter 10. The pair of pushers 57c press both ends of the hollow pipe 15 during the cutting operation of the rod-type water filter 10 to prevent vibration in a direction parallel to the X-axis of the rod-type water filter 10. Since the pusher actuator 57b can be positioned in parallel with the Z-axis, the pair of pushers 57c are the rod-type water filter 10 on the rod-type water filter rotation axis SR regardless of the diameter of the rod-type water filter 10. The center of both ends may be pressed (see FIG. 7). Since the pair of pushers 57c are freely rotatable with respect to the piston rod 57e, even if the pair of pushers 57c tightly presses both ends of the hollow pipe 15, the axis of rotation SR of the rod-type water filter 10 is tight. Rotation around) is not disturbed.

The lifting structure 47 supports five cutting units 51 at the bottom and is lifted by the operation of the lifting drive unit. The lifting structure 47 is connected to the connecting plate 47a in the form of a rectangular plate and the connecting plate 47a. A support plate 47d disposed below the vertical portion and a side plate 47c connecting the connection plate 47a and the support plate 47d are provided.

The support plate 47d is a plate-like member having a predetermined thickness, and side actuators 49a are mounted at both ends thereof. The side actuator 49a pulls the pressure plate 49b while being fixed to the support plate 47d to maintain the gap between the cutter blades 51d. The center block 47f is fixed to the center of the bottom face of the support plate 47d. The center block 47f serves to center the five cutting units 51. The bottom face of the support plate 47d is provided with a plurality of horizontal rails 47e. The plurality of horizontal rails 47e are disposed symmetrically with the center block 47f interposed therebetween and extend in parallel with the X axis, and support the rail holder 51b so as to be slidable.

Female screw holders 47b are provided at both ends of the connecting plate 47a. A female thread is formed inside the female thread holder 47b, and a ball screw 43 extending in parallel with the Z axis penetrates the female thread holder 47b and is fitted to the female thread of the female thread holder 47b. It is. Therefore, the lifting structure 47 moves up and down as the ball screw 43 axially rotates.

A plurality of vertical rods 45 are fixed to the connecting plate 47a. The vertical rod 45 extends upwardly through an elevating guider 33a provided in the frame 33 as an annular member having a lower end fixed to the connecting plate 47a. The lifting guider 33a prevents shaking of the vertical rod 45 in the direction orthogonal to the Z axis. That is, the lateral movement of the lifting structure 47 is blocked.

The lifting drive unit, a motor 35 for rotating the drive pulley 37 is fixed to the upper portion of the frame 33, a driven pulley (41) fixed to the upper end of each of the ball screw 43, The driving pulley 37 and the driven pulley 41 are connected to each other, and a transmission belt (belt) 39 for transmitting 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 through the transmission belt 39 and the driven pulley 41, and the pair of ball screws 43 are axially rotated, the elevating as described above The structure 47 moves up and down. As a result, the vertical height of the lifting structure 47 can be adjusted by driving the motor 35.

Five cutting units 51 are disposed below the connecting plate 47a and are lowered together with the lifting structure 47 to cut the rod-type water filter 10. Five cutting units 51 are arranged at equal intervals to cut the bar-shaped water filter 10 into six cylindrical pieces 21 and 23 (see Fig. 9). Of the six cylindrical pieces, the pair of cylindrical pieces 23 at both ends of the rod-shaped water filter 10 are discarded waste pieces, and the middle four cylindrical pieces 21 except the waste piece 23 are disposed. Becomes a cylindrical filter body constituting a cylindrical filter module.

The five cutting units 51 each include a cutter blade 51d, a cutter supporter 51c, a plurality of idle rollers 51e, and an actuator ( 51k). The cutter blade 51d is disposed on the pair of support rollers 53 and descends to cut the rod-shaped water filter 10 supported by the pair of support rollers 53.

The cutter blade 51d has a disk shape 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 bearing supported by the cutter supporter 51c, and can be freely rotated about the virtual cutter blade rotation axis SD. Since the rod-type water filter 10 supported by the pair of support rollers 51 rotates, the cutter blade 51d rotates by the friction with the rod-type water filter 10 while the cutter blade 51d is lowered. The rod-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, ie, parallel to the X axis, and five cutter blades 51d are on the cutter blade rotation axis SD. Are arranged in a line at equal intervals. Therefore, when the lifting structure 47 descends, the five cutter blades 51d simultaneously descend to cut the rod-like water filter 10 into the six cylindrical pieces 21 and 23 (see FIG. 9) described above.

An edge 51edge (see FIGS. 6-9) at the distal end of the cutter blade 51d extends along a circumferential path about the cutter blade rotation axis SD. On the other hand, if the edge of the cutter blade 51d extends in a sawtooth shape or wave shape, the cutter blade 51d is caught by the rotating rod-type water filter 10 and the cutter blade 51d is broken or cut. The operation of the device 31 can be stopped. On the other hand, the cutter blade is not limited to the free-rotating disk-shaped cutter blade shown in Figures 2 to 4, for example, the cutter blade is bent like a crescent, the cutter blade capable of lifting only without free rotation cutting device 31 It may be provided in.

The plurality of idle rollers 51e are placed below the rod-type water filter 10 so that the rod-type water filter 10 comes into close contact with the pair of support rollers 53 while the cutter blade 51d cuts the rod-type water filter 10. Pressurized by The actuator 51k raises and lowers the plurality of idle rollers 51e. The plurality of idle rollers 51e are adjacent to the cutter blade 51d with the cutter blade 51d therebetween along the direction parallel to the longitudinal direction of the rod-shaped water filter 10, that is, the direction parallel to the X axis. And one pair on the other side, respectively. 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 are in close contact with the outer circumferential surface of the rod-type water filter 10 during the cutting operation of the rod-type water filter 10, and freely rotates as the rod-type water filter 10 rotates. In other words, the idle roller 51e is rotatably supported by the arm 51f extending in the direction parallel to the Y axis. A pair of idle rollers 51e are supported by one arm 51f. The vertical lifting body 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 other cutter supporters 51c are fixed to the bottom surface of the sliding plate 51a. Combined. The cutter supporter 51c and the so-called center cutter supporter 51c fixedly coupled to the center block 47f are fixed at the position without moving in parallel with the X axis. The cutter blade 51d supported by the center cutter supporter 51c is aligned with the longitudinal center point of the rod-type water filter 10 supported by the pair of support rollers 53.

The sliding plate 51a is a rectangular plate-shaped member and supports the other cutter supporters 51c other than the center cutter supporter 51c in a state of 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 to be reciprocated along the longitudinal direction of the horizontal rail 47e, thereby between five cutter supporters 51c and five cutter blades ( The gap between 51d) is adjustable.

An actuator 51k is coupled to the center block 47f and the plurality of sliding plates 51a, respectively. The actuator 51k drives the lifting motion of the arm 51f in a state of being coupled to the center block 47f and the sliding plate 51a. One side of the actuator 51k is provided with a vertical rail 51g. The vertical rail 51g supports the vertical lifting body 51h and guides the lifting movement of the vertical lifting body 51h. As a result, the plurality of idle rollers 51e are adjusted to an appropriate height by the operation of the actuator 51k, and the rod-type water filter 10 is separated from the pair of support rollers 53 when the rod-type water filter 10 is cut. The rod-type purified water filter 10 is pressed against each other so as not to.

In order to keep the space | interval between five cutter blades 51d constant, the space | interval holding jig 49c is further provided. The space keeping jig 49c is a flat member having the same size and is disposed between the center block 47f and the sliding plate 51a and between a pair of neighboring sliding plates 51a. An interval holding jig 49c positioned between the center block 47f and the sliding plate 51a is fixed at one end thereof to the center block 47f. An interval holding jig 49c positioned between the adjacent pair of sliding plates 51a is fixed to one sliding plate 51a of the pair.

Since the plurality of spacing jig 49c has the same size, for example, when the outermost sliding plate 51a is moved to the center block 47f side, the sliding plate 51a is caught by the spacing jig 49c and further. It cannot move abnormally, and maintains the spaced apart space | interval corresponding to the horizontal length of the adjacent sliding plate 51a and the space | interval holding jig 49c. The gap holding jig 49c is sandwiched between a pair of adjacent 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 pressing plate 49b are applied as a pressing means for pressing the outermost sliding plate 51a toward the center block 47f. The side actuator 49a pulls the pressure plate 49b while being fixed to both ends of the support plate 47d, and causes the pressure plate 49b to press-support the outermost sliding plate 51a toward the center block 47f. That is, the space | interval of cutter blade 51d is maintained.

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

2 to 6 together, the loading step is a step of placing the rod-shaped water filter 10 between a pair of support rollers 53 extending in parallel to each other. Next, the chucking step, by pressing the both ends of the hollow pipe 15 of the rod-type purified water filter 10 supported between a pair of supporting rollers 53, a pair of chucking portion 57, rod-shaped The water filter 10 may rotate around the rotation axis SR but grasp it so as not to move in its longitudinal direction, that is, in a direction parallel to the X axis.

Next, the idle roller pressurizing step is a step of pressing the rod-type water filter 10 to be in close contact with the pair of support rollers 53 with the plurality of idle rollers 51e by driving the actuator 51k. In some cases, the plurality of idle rollers 51e may be lowered when the cutter blade 51d starts to descend. The idle roller pressing step is maintained until the cutting of the hollow pipe 15 is completed through the cutter blade lowering step described later.

In the rotating step, the pair of support rollers 53 are rotated in the same direction, and the rod-type water filter 10 is driven about the rod-type water filter rotation axis SR by friction with the support rollers 53. This step is to rotate. As the rod-type water filter 10 rotates about the rotation axis SR, since the plurality of idle rollers 51e freely rotate by friction with the rod-type water filter 10, the rotation of the rod-type water filter 10 It is not disturbed by the idle roller 51e.

7 to 9 together, the cutter blade lowering step, the edge (edge) 51 edge of the five cutter blade (51d) is the filter sheet 12 wound of the rod-type water filter 10 and Five cutter blades 51d are lowered so that the hollow pipe 15 can be dug sequentially and cut the rod-type water filter 10. As described above, the five cutter blades 51d are arranged to be spaced apart from each other in a line along an imaginary cutter blade rotational axis SD extending parallel to the pair of support rollers 53, i.e., parallel to the X axis. , Each has a disk shape having the same diameter. If the elevating structure 47 is lowered by driving the motor 35 while the rod-type water filter 10 is rotating, five cutter blades 51d arranged in a line along the cutter blade rotation axis SD are simultaneously sealed. The rod-type water filter 10 is cut into six pieces 21 and 23 by descending toward the filter 10.

As the five cutter blades 51d descend at the same speed, the edges 51 edges of the five cutter blades 51d form the outer circumferential surface of the rod-type water filter 10, specifically, the outermost surface of the wound filter sheet 12. Digging in, the rod-shaped water filter 10 begins to cut as shown in FIG. At this time, since the five cutter blades 51d are free to rotate about the cutter blade rotation axis SD by friction with the rod-type water filter 10, the edges 51edge slide smoothly inside the rod-type water filter 10. Cutting is promoted, and breakage of the cutter blade 51d is suppressed. Since the rod-type water filter 10 continues to rotate about the rod-type water filter rotation axis SR, the cutter blade edge 51edge penetrates inward from the outermost surface of the filter sheet 12 on which the filter sheet 12 is wound. An annular slot 13 is formed in 12. As the five cutter blades 51d continue to descend, as shown in FIG. 8, the annular slot 13 of the filter sheet 12 extends to the boundary of the hollow pipe 15 and the wound filter sheet 12. do.

When the five cutter blades 51d continue to descend, the five cutter blade edges 51edge dig into the outer circumferential surface of the hollow pipe 15. Since the rod-type water filter 10 continues to rotate about the rod-type water filter rotation axis SR, the annular slot 17 is formed in the outer peripheral surface of the hollow pipe 15. As the five cutter blades 51d continue to descend, the annular slot 17 of the hollow pipe 15 extends to the inner circumferential surface of the hollow pipe 15, as shown in FIG. Is cut. The annular slot 13 of the filter sheet 12 and the annular slot 17 of the hollow pipe 15 are formed by the process of the five cutter blades 51d descending once, i.e., one lower stroke. The annular slots 13, 17 continue without slipping. As a result, the cut surfaces at both ends of the plurality of cylindrical filter bodies 21 generated by the cutting of the rod-shaped water filter 10 are not stepped at the boundary between the filter sheet 12 and the hollow pipe 15, thereby improving cutting quality. .

The chucking step may include a pair of pairs of edges 51 edges of the five cutter blades 51d digging into the hollow pipe 15 before cutting of the hollow pipe 15 is completed, as shown in FIG. 8. The chucking portion 57 (see FIG. 2) is spaced apart from both ends of the hollow pipe 15. Since the edge 51edge of the cutter blade 51d is continuously lowered in parallel with the Z axis in the state of being stuck in the rigid hollow pipe 15, the rod-type water filter 10 is X-axis even if the chucking part 57 is released. The cutting of the rod-like water filter 10 may be finished to the intended precise size without vibrating or moving in a direction parallel to the direction.

If the both ends of the hollow pipe 15 are kept in close contact with the pushers 57c of the pair of chucking portions 57 until the hollow pipe 15 is completely cut, the pair of pushers 57c are closely contacted. Due to the pressure, a work defect may occur that causes the rod-type water filter 10, specifically the hollow pipe 15 to be broken before being cleanly cut by the cutter blade 51d, and at the same time the hollow pipe 15 is completely cut. A safety accident may occur in which the cut cylindrical pieces 21, 23 pop out of the pair of support rollers 53.

On the contrary, if the edge 51edge of the cutter blade 51d advances downward in the wound filter sheet 12 before digging into the outer circumferential surface of the hollow pipe 15, the pair of chucking portions 57 If the pusher 57c of the) is spaced apart from both ends of the rod-type water filter 10, a slip occurs at the moment when the edge 51edge of the cutter blade 51d penetrates into the hollow pipe 15. The filter 10 may be shaken in its longitudinal direction, and in severe cases, 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 slots 17 of the hollow pipes 15 are hollow pipes (as shown in FIG. 9). Extending to the inner circumferential surface of 15), the rod-like water filter 10 is cut into six cylindrical pieces 21 and 23. As described above, the pair of cylindrical pieces 23 at both ends of the rod-shaped water filter 10 among the six cylindrical pieces 21 and 23 is a waste piece, and the middle except for the waste piece 23. Four cylindrical pieces 21 become a cylindrical filter body. Caps are fixedly coupled to both ends in the longitudinal direction of the cylindrical filter body 21 to manufacture a cylindrical filter module mounted inside the water purifier. As shown in FIG. 9, the cylindrical filter body 21 has its own length FBL in a direction parallel to the X axis than its diameter FBD. In contrast, the waste piece 23 is larger than its length in the direction in which its diameter is parallel to the X axis.

In FIG. 9, the dotted line CB represents the boundary of the six cylindrical pieces 21, 23. Since the rod-type water filter 10 continues to rotate about the rod-type water filter rotation axis SR, the cutter blade edge 51edge of the rod-type water filter 10 does not fall from the top to the bottom of the rod-type water filter 10. Only up to the center part, the rod-type water filter 10 can be cut even if it descends only to the inner circumferential surface of the hollow pipe 15, thereby preventing the collision of the five cutter blades 51d and the pair of support rollers 53. .

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

According to the rod-type water filter cutting method described above, the cutter blade 51d is lowered while the rod-type 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 a smooth cut surface, and the cut surface of the filter sheet 12 and the hollow pipe 15 is orthogonal to the longitudinal direction of the rod-type water filter 10 and is coplanar. Present in the phase. That is, the cutting quality is excellent even though the rod-shaped water filter 10 formed by joining dissimilar materials is cut with one kind of cutter blade 51. In addition, since the cutter blade 51d does not rotate at high speed by power supply, breakage of the cutter blade 51d and a safety accident due to it are prevented.

In addition, according to the rod-type water filter cutting method described above, the edge 51egde of the cutter blade 51d is chucked at both ends of the hollow pipe 15 before entering the filter sheet 12 so that the rod-type water filter ( 10) to prevent longitudinal shaking and release the chuck after the cutter blade edge 51edge has dug into the outer circumferential surface of the hollow pipe 15. Therefore, the intended point is precisely cut without an error due to the shake of the rod-shaped water filter 100. Further, the compressive force at both ends of the hollow pipe 15 before the rod-shaped water filter 10 is completely cut by the cutter blade 51d. Work failure or a safety accident in which the cylindrical pieces cut off at the same time as the rod-shaped water filter 10 is cut off and protrudes from the pair of support rollers 53. The plurality of cutter blades 51d are prevented. Is simultaneously lowered to cut the bar-shaped water filter 10 into a plurality of cylindrical filter bodies 21 at the same time, thereby improving productivity.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. 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: support roller
51e: idle roller 57: chucking portion

Claims (6)

A method of cutting a rod-type water filter in which a filter sheet is wound around a hollow pipe,
Loading the rod-shaped water filter in parallel with the pair of support rollers between a pair of support rollers extending in parallel to each other; Both ends of the hollow pipe of the rod-type water filter supported by being lifted between the pair of supporting rollers are pressed by a pair of chucking portions, so that the rod-type water filter is rotatable in its longitudinal direction. A chucking step of avoiding holding; A rotation step of rotating the rod-type water filter by friction with the pair of support rollers in the same direction; The cutter blade is lowered toward the rotating rod water filter so that an edge at the end of the cutter blade cuts through the wound filter sheet and the hollow pipe sequentially and cuts the rod water filter. Cutter blade lowering step; And a chucking releasing step of separating the pair of chucking parts from both ends of the hollow pipe after the edge is dug into the hollow pipe and before the cutting of the hollow pipe is completed.
The cutter blades are provided with at least three, the at least three cutter blades are arranged in a line spaced apart from each other in parallel with the pair of support rollers,
The at least three cutter blades are simultaneously lowered in the cutter blade lowering step to cut the rod-type water filter into a plurality of cylindrical pieces including at least two cylindrical filter bodies,
The cylindrical filter body is a rod-type water filter cutting method characterized in that the length is larger than its diameter. The method of claim 1,
After the chucking step, the idle roller pressing step of pressing the rod-type water filter to be in close contact with the pair of support rollers with a plurality of idle rollers;
And a plurality of idle rollers are free to rotate due to friction with the rod-type water filter as the rod-type water filter rotates. The method of claim 2,
The idle roller pressing step, the rod-type water filter cutting method characterized in that it is maintained until the cutting of the hollow pipe is completed through the cutter blade lowering step. The method of claim 2,
The plurality of idle rollers are provided in pairs on one side and the other side close to the cutter blade along a direction parallel to the longitudinal direction of the rod-type water purification filter to pressurize the rod-type water purification filter. Way. delete The method of claim 1,
The cutter blade is disk shaped,
And the cutter blade freely rotates about a rotation axis parallel to the longitudinal direction of the pair of support rollers as the rod-type water filter rotates.

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