Abstract
The present invention is configured such that an adjustment nut for fixing spacers and blades repeatedly fitted to a shaft is provided with at least two concentricity adjustment screws, and, with the spacers and the blades fixed by the adjustment nut, the spacers and the blades are pushed by the concentricity adjustment screws in the direction of the shaft to enable concentricity adjustment, and thus, without causing defects, the blades are protected and can be used for a long time. In particular, according to the present invention, while one side shaft with respect to a diagnostic sheet is elastically supported, position adjustment in the longitudinal direction thereof is possible, and also projections are formed on the peripheries of the surfaces of the spacers facing the cutting edges of the blades thus to provide extra spaces for the blades in which the blades move, thereby preventing the deformation of cut strips and the damages on the blades.
Claims
1. A strip cutting device for a diagnostic kit, which is adapted to cut a diagnostic sheet (10) provided to the shape of a band into a plurality of strips (11) in a transverse direction at once, the strip cutting device comprising: a frame (100); a first shaft (200′) having a plurality of disc-shaped blades (210′) and spacers (210″) alternately fixedly fitted thereto, without rotating, and an adjustment nut (230) fastenedly fixed to one side thereof to fix the blades (210′) and the spacers (210″) thereto, and a second shaft (200″) having a plurality of disc-shaped blades (210′) and spacers (210″) alternately fixedly fitted thereto, without rotating, and an adjustment nut (230) fastenedly fixed to one side thereof to fix the blades (210′) and the spacers (210″) thereto, wherein as the first shaft (200′) and the second shaft (200″) are mounted on the frame (100) to rotate in position together, the blades (210″) cut the diagnostic sheet (10) into the plurality of strips (11) by means of the shear forces thereof, the first shaft (200′) and the second shaft (200″) each having at least two or more concentricity adjustment screws (231) fastened on an imaginary circle with respect to the center thereof to each adjustment nut (230) fastenedly fixed thereto to pressurize the blades (210′) and the spacers (210″) in a transverse direction and thus to adjust the concentricity of the blades (210′) and the spacers (210″), and the spacers (210″) fitted to the first shaft (200′) and the second shaft (200″) each having a projection (214) with a given distance (W) formed on the surface facing the surface of each blade (210′) where a cutting edge is formed.
2. The strip cutting device according to claim 1, wherein the given distance (W) is in the range of 0.05 to 2 mm.
3. The strip cutting device according to claim 1 or 2, wherein the first shaft (200′) has a compression bearing (240), a taper bearing (250′), and a bearing (250″) sequentially fitted to one side thereof to support the rotation thereof and to absorb the force applied axially thereto and a bearing (260) and a thrust bearing (270) fitted to the other side thereof, the bearing (260) being adapted to support the rotation of the first shaft (200′) and the movement in the longitudinal direction of the first shaft (200′), and when a length adjustment screw (271) fitted to the frame (100) rotates in position, the thrush bearing (270) being adapted to support the rotation of the first shaft (200′).
Description
BRIEF DESCRIPTION OF DRAWINGS
[0027] FIG. 1 is a side view showing a state where a diagnostic sheet is put in a strip cutting device for a diagnostic kit according to a first embodiment of the present invention and thus cut into strips.
[0028] FIG. 2 is a front view showing the strip cutting device for a diagnostic kit according to the first embodiment of the present invention.
[0029] FIG. 3 is an exploded side view showing a configuration of a first shaft of the strip cutting device for a diagnostic kit according to the first embodiment of the present invention.
[0030] FIGS. 4a and 4b are front and side views showing a blade of the strip cutting device for a diagnostic kit according to the first embodiment of the present invention.
[0031] FIGS. 5a and 5b are front and side views showing a spacer of the strip cutting device for a diagnostic kit according to the first embodiment of the present invention.
[0032] FIGS. 6a and 6b are views showing an adjustment nut of the strip cutting device for a diagnostic kit according to the first embodiment of the present invention, wherein FIG. 6a is a front view of the adjustment nut, and FIG. 6b shows a state where concentricity is held by the adjustment nut.
[0033] FIG. 7 is an enlarged view showing portions of spacers and blades in a strip cutting device for a diagnostic kit according to a second embodiment of the present invention, wherein projections formed on the spacers are shown.
[0034] FIG. 8 is a front view showing a configuration of a first shaft in a strip cutting device for a diagnostic kit according to a third embodiment of the present invention.
BEST MODE FOR INVENTION
[0035] Hereinafter, embodiments of the present invention are disclosed in detail with reference to the attached drawings. All terms used herein, including technical or scientific terms, unless otherwise defined, have the same meanings which are typically understood by those having ordinary skill in the art. The terms, such as ones defined in common dictionaries, should be interpreted as having the same meanings as terms in the context of pertinent technology, and should not be interpreted as having ideal or excessively formal meanings unless clearly defined in the specification.
[0036] Before the present invention is disclosed and described, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms. However, this does not limit the invention within specific embodiments and it should be understood that the invention covers all the modifications, equivalents, and replacements within the idea and technical scope of the invention.
MODE FOR INVENTION
First Embodiment of the Invention
[0037] As shown FIGS. 1 to 6b, a strip cutting device for a diagnostic kit according to a first embodiment of the present invention, which is adapted to cut a diagnostic sheet 10 provided to a shape of a long plate into a plurality of strips 11 in a transverse direction at once, includes a frame 100, a first shaft 200′, and a second shaft 200″.
[0038] In specific, the first shaft 200′ includes a plurality of blades 210′ and spacers 210″ alternately fitted thereto, an adjustment nut 230 for fixing the blades 210′ and the spacers 210″ thereto, and at least two or more concentricity adjustment screws 231 fastened to the adjustment nut 230, and when the adjustment nut 230 does not pressurize the blades 210′ and the spacers 210″ uniformly, accordingly, the blades 210′ and the spacers 210″ are pressurized by means of the concentricity adjustment screws 231 to ensure concentricity thereof.
[0039] Hereinafter, the components of the strip cutting device according to the first embodiment of the present invention will be explained in detail with reference to the attached drawings. A reference numeral “10” represents the diagnostic sheet provided to the shape of a band and having reagents on one side thereof, and a reference numeral “11” represents each strip made by cutting the diagnostic sheet at once.
[0040] A. Frame
[0041] As shown in FIGS. 1 and 2, the frame 100 supports both ends of the first shaft 200′ and the second shaft 200″ as will be discussed later and puts the diagnostic sheet 10 between the first shaft 200′ and the second shaft 200″ so that the diagnostic sheet 10 can be cut into the plurality of strips 11. Like this, only if the frame 100 serves to support both ends of the first shaft 200′ and the second shaft 200″, it may be made to any shape, and in the drawings, the frame 100 is made to a lattice shape.
[0042] B. First Shaft and Second Shaft
[0043] As shown in FIGS. 1 to 3, both ends of the first shaft 200′ and the second shaft 200″ are fitted to the frame 100 so that the first shaft 200′ and the second shaft 200″ can rotate in position, and the outer peripheral surfaces thereof are configured to cut the single diagnostic sheet 10 into the plurality of strips 11.
[0044] In this case, the first shaft 200′ and the second shaft 200″ have the same configuration as each other, and accordingly, an explanation of the first shaft 200′ will be given for the convenience of the description, while a detailed explanation of the second shaft 200″ being avoided. Further, the first shaft 200′ and the second shaft 200″ rotate in position, respectively, but desirably, gears 220 are fitted to the first shaft 200′ and the second shaft 200″ and interlock with each other so that the first shaft 200′ and the second shaft 200″ rotate simultaneously.
[0045] To do this, as shown in FIGS. 1 to 6b, the first shaft 200′ has bearings 250″ and 260 mounted on both ends thereof so that it can supportedly rotate in position. Further, the first shaft 200′ has the plurality of blades 210′ and spacers 210″ alternately fitted to the outer peripheral surface thereof and the adjustment nut 230 fastened thereto to fix the blades 210′ and the spacers 210″. In this case, the first shaft 200′ has key grooves 280 formed thereon to fixedly fit the blades 210′ and the spacers 210″ thereto so that the blades 210′ and the spacers 210″ cannot rotate in position.
[0046] (a). Blade
[0047] As shown in FIGS. 2 to 4, each blade 210′ has the shape of a disc. In this case, as shown in FIG. 4, the blade 210′ has a cutting edge 211 formed on one side periphery thereof, so that the blades 210′ fitted to the first shaft 200′ and the second shaft 200″ can cut the diagnostic sheet 10 by using shearing forces like scissors.
[0048] As shown in FIG. 4, each blade 210′ includes a mounting hole 212 formed at the center thereof so that it can be fitted to the first shaft 200′, and a key groove 213 formed on one side of the mounting hole 212 to fit a key fitted to the corresponding key groove 280 thereto.
[0049] (b). Spacer
[0050] As shown in FIGS. 2 and 3, each spacer 210″ is fitted to the first shaft 200′ to tightly face each blade 210′. In this case, the spacer 210″ has the shape of a disc having a smaller diameter than the blade 210′, to thus ensure a space in which the blade 210′ can cut the diagnostic sheet 10. In the same manner as the blade 210′, further, the spacer 210″ has to have no rotation with respect to the first shaft 200′, and accordingly, the spacer 210″ includes a mounting hole 212 and a key groove 213 formed thereon. They have been explained above, and a detailed explanation of them will be avoided.
[0051] (c). Adjustment Nut
[0052] As shown in FIGS. 2, 3, 6a and 6b, the adjustment nut 230 is fastened to one side of the first shaft 200′, desirably, to the first shaft 200′ in a state where the blades 210′ and the spacers 210″ are fitted to the first shaft 200′, to fixedly support the blades 210′ and the spacers 210″ thereto so that the blades 210′ and the spacers 210″ can be alignedly positioned with one another.
[0053] In specific, the adjustment nut 230 has at least two or more concentricity adjustment screws 231 adapted to pressurize the blades 210′ and the spacers 210″. As the adjustment nut 230 is fastened to the first shaft 200′, as shown in FIG. 6b, an angle θ caused by a gap may be made according to characteristics of the nut, and accordingly, even though the adjustment nut 230 is firmly fastened to the first shaft 200′, it is possible that the blades 210′ and the spacers 210″ may escape from the concentricity thereof. If the blades 210′ and the spacers 210″ are not concentric, gaps may be produced to cause the blades 210′ and the spacers 210″ to move freely, thereby failing to uniformly cut the diagnostic sheet 10 or causing the cut strips 11 to be caught between the blades 210′ and the spacers 210″ so that defects may occur. According to the present invention, therefore, even though the adjustment nut 230 tightly comes into contact with the blades 210′ and the spacers 210″, it can be tightly brought into contact with the blades 210′ and the spacers 210″ by means of the concentricity adjustment screws 231, while maintaining the concentricity of the blades 210′ and the spacers 210″, so that the diagnosis sheet 10 can be cut into the strips 11 with the given sizes and the cut strips 11 can be prevented from being caught to the gaps between the blades 210′ and the spacers 210″ to thus cause no defects.
[0054] According to the present invention, desirably, at least two or more concentricity adjustment screws 231 are provided so that a constant distance between the neighboring screws 231 is made. Most desirably, eight concentricity adjustment screws 231 are provided so that a constant distance between the neighboring screws 231 is made. When the adjustment nut 230 is rotatingly adjusted, it cannot be recognized whether the angle θ caused by a gap is formed on any side of the adjustment nut 230, and accordingly, the distance between the neighboring concentricity adjustment screws 231 is narrow so that the concentricity can be adjusted by means of the concentricity adjustment screws 231 located close to each other.
[0055] Like this, after the concentricity has been adjusted through the concentricity adjustment screws 231, the concentricity of the blades 210′ is adjustably checked by means of a concentricity gauge, and the like, which will be easily understood to a person having ordinary skill in the art.
[0056] In this case, a reference numeral “290” not explained yet represents a distance adjustment spacer fitted to each of the first shaft 200′ and the second shaft 200″, which is fitted if it is desired to adjust the number of the blades 210′ and the spacers 210″ fitted to each shaft or their position in accordance with the length of the diagnostic sheet 10.
Second Embodiment of the Invention
[0057] As shown FIG. 7, a strip cutting device for a diagnostic kit according to a second embodiment of the present invention has the same configuration as according to the first embodiment of the present invention, but it is different from that according to the first embodiment of the present invention in that each spacer 210″ fitted to the first shaft 200′ has a projection 214 formed thereon. Accordingly, the projection 214 as the added component will be explained below, while detailed explanations of the same components as the first embodiment of the present invention being avoided.
[0058] According to the second embodiment of the present invention, as shown in FIG. 7, the projection 214 with a given distance W is formed on one side surface of the disc-shaped spacer 210″. In this case, desirably, the projection 214 is formed on the surface of the spacer 210″ facing the surface of the blade 210″ on which the cutting edge 211 is formed. If the first shaft 200′ is excessively pressurized against the adjustment nut 230, the portions close to the first shaft 200′ may be deformed in a pressurizing direction, and the peripheral portion on which the cutting edge 211 is formed is bent in the opposite direction to the pressurizing direction. Accordingly, the projection 214 is provided as a space in which the blade 210′ may be deformed even though bent, so that the strips 11 cut by the blades 210′ can be prevented from being deformed and the damages on the blades 210′ can be minimized.
[0059] According to the present invention, as shown in FIG. 7, the projection 214 desirably has the given distance W in the range of 0.05 to 2 mm, more desirably has the given distance W of 0.1 mm.
Third Embodiment of the Invention
[0060] As shown FIG. 8, a strip cutting device for a diagnostic kit according to a third embodiment of the present invention has the same configuration as according to the first and second embodiments of the present invention, but it is different from that according to the first and second embodiments of the present invention in that the first shaft 200′ has components moving therealong in a longitudinal direction thereof. Accordingly, the added components will be explained below, while detailed explanations of the same components as the first and second embodiments of the present invention being avoided.
[0061] According to the third embodiment of the present invention, as shown in FIG. 8, the first shaft 200′ moves in the longitudinal direction thereof to adjust the distances between the blades 210′ fitted thereto and the blades 210′ fitted to the second shaft 200″ so that the diagnostic sheet 10 can be cut more conveniently.
[0062] To do this, as shown in FIG. 8, the first shaft 200′ has a taper bearing 250′ fitted to on one side thereof so that even though the first shaft 200′ moves in the longitudinal direction thereof, the taper bearing 250′ stably supports the first shaft 200′. In this case, the taper bearing 250′ and the bearing 250″ are fitted to the first shaft 200′ and firmly supported inside the frame 100, without being pushed backward. In specific, a compression spring 240 is fitted between the first shaft 200′ and the taper bearing 250′, and if the first shaft 200′ is pressurized in the longitudinal direction thereof, the compression spring 240 applies a repulsive force in the opposite direction to the pressurizing direction to perform shock absorption .
[0063] Further, as shown in FIG. 8, the first shaft 200′ has a thrust bearing 270 supportingly fitted to the other side thereof, and the thrust bearing 270 comes into contact with a length adjustment screw 271 fitted to the frame 100. In this case, the length adjustment screw 271 rotates when length adjustment is needed, that is, when there is a need to adjust the distances between the blades 210′ fitted to the first shaft 200′ and the blades 210′ fitted to the second shaft 200″, so that the first shaft 200′ moves in the longitudinal direction thereof to push the thrust bearing 270 to allow the distances to be adjusted. In this case, the first shaft 200′ is adjusted in length with the shock absorption under the elastic support of the compression spring 240, so that the adjustment of the distances between the blades 210′ can be achieved, and even though the blades 210′ are misaligned, they can be returned to their original position through the shock absorption of the compression spring 240.
[0064] As mentioned above, the strip cutting device according to the third embodiment of the present invention is configured to allow the first shaft to be fitted adjustable in the longitudinal direction, while being elastically supported, so that if it is desired to adjust the positions of the blades, the adjustment can be easily performed to stably cut the diagnostic sheet into the strips, and through the elastic support, further, the shock absorption is generated to accurately cut the diagnostic sheet in position into the given shapes, while protecting the blades.
Explanations of Reference Numerals
[0065] 10: Diagnostic sheet
[0066] 11; Strip
[0067] 100: Frame
[0068] 200′: First shaft
[0069] 200″: Second shaft
[0070] 210′: Blade
[0071] 210″: Spacer
[0072] 214: Projection
[0073] 230: Adjustment nut
[0074] 231: Concentricity adjustment screw
[0075] 250: Compression spring
[0076] 270: Thrust bearing
[0077] 271: Length adjustment screw
[0078] 280: Key groove
