KR102395138B1 - Plotting cutter - Google Patents

Abstract

Disclosed is a plotting cutter capable of easily adjusting the protruding length of a cutter. According to one aspect of the present invention, the plotting cutter comprises: a cutter; a plunger into which the cutter is inserted to protrude; an elastic member pressing the cutter upwards in the plunger; and a mounting unit coupled to the plunger to be moved in a prescribed pattern. The plunger includes: a plunger body allowing the cutter to be inserted thereinto and coupled to the mounting unit; an adjustment member coupled to one end of the plunger body to adjust the protruding length of the cutter; and a plunger cap coupled to the other end of the plunger body, having a dome shape, and allowing the cutter to protrude in the middle thereof. The cutter includes a cutter body and a cutter head formed on an end of the cutter body and having a larger diameter than the cutter body. The plunger cap has a mounting protrusion therein. One end of the elastic member is supported on the cutter head and the other end of the elastic member is supported on the mounting protrusion. The adjustment member has an adjustment body screw-coupled to be moved in the plunger body. A center groove is formed in the middle of the lower end of the adjustment body. The upper end of the cutter head is inserted into the center groove.

Description

Floating Cutter {PLOTTING CUTTER}

The present invention relates to a floating cutter with easy adjustment of the protruding length of the cutter.

The floating cutter corresponds to a device for separating a necessary part and an unnecessary scrap part by cutting along a predetermined pattern. For example, a floating cutter is used to cut a tape on which backing paper is laminated in a certain pattern. By cutting, the backing paper is not completely cut and only the tape on the top is cut, so only the tape with the desired pattern can be separated from the backing paper. there will be

The floating cutter has a structure in which a cutter for cutting an object is coupled to a plunger, and the plunger is coupled to a mounting part. When a floating cutter cuts a thin sheet, the length of the cutter protruding from the plunger is important. This is because, when the protruding length of the cutter with respect to the plunger is short, the object is not smoothly cut, and when the protruding length is long, the cutting edge of the sheet is cut.

Republic of Korea Patent Publication No. 2020-0121854

Accordingly, the present invention has been derived to solve the above problems, and an object of the present invention is to provide a floating cutter that can easily adjust the protruding length of the cutter.

Other objects of the present invention will become clearer through the examples described below.

A floating cutter according to an aspect of the present invention includes a cutter, a plunger into which the cutter is inserted and protruding, an elastic member for upwardly pressing the cutter from the inside of the plunger, and a mounting part that is coupled with the plunger to move in a predetermined pattern Including, the plunger includes a plunger body into which the cutter is inserted and coupled to the mounting portion, an adjusting member coupled to one end of the plunger body to adjust the protruding length of the cutter, and the other end of the plunger body coupled to the dome shape and a plunger cap from which the cutter protrudes, the cutter comprising a cutter body and a cutter head formed at an end of the cutter body and having a larger diameter than that of the cutter body, the plunger cap having a stepped step seated therein One end of the elastic member is supported by the cutter head and the other end is supported on the seating step, the adjusting member has an adjusting body that is movably screwed in the inside of the plunger body, and a center groove in the center of the lower end of the adjusting body is formed, and the upper end of the cutter head is inserted into the center groove.

The floating cutter according to the present invention may have one or more of the following embodiments. For example, the end of the cutter head may have a conical shape, and the center groove may have an engraved shape corresponding to the shape of the cutter head.

The plunger body has a lower flange and a lower thread formed on the lower portion of the lower flange, and the plunger cap is screwed to the lower thread while the end thereof can be caught on the lower flange.

The plunger body has an upper flange, and the mounting part includes a holder into which the plunger body is inserted, and a bracket coupled to a side surface of the holder and having an upper protrusion and a lower protrusion, and the upper protrusion is pressed in a lateral direction while in contact with the upper flange. And, the lower protrusion can be pressed in the lateral direction while in contact with the lower flange.

Ends of the upper flange and the lower flange may be formed in a circular shape corresponding to the outer circumferential surface of the plunger.

According to the problem solving means of the present invention as described above, various effects including the following items can be expected. However, the present invention is not established only when all of the following effects are exhibited.

The present invention can provide a floating cutter in which the protrusion length of the cutter can be easily adjusted.

1 and 2 are views each illustrating a separated state and a combined state of the plunger of the floating cutter according to the first embodiment of the present invention.
3 and 4 are combined and exploded cross-sectional views of the plunger of the floating cutter according to the first embodiment of the present invention.
5 is a view illustrating a cutter and an elastic member of the floating cutter according to the first embodiment of the present invention.
6 is a view illustrating the protruding length of the cutter by the rotation of the adjusting member in the floating cutter according to the first embodiment of the present invention.
7 is a view illustrating a state in which the plunger of the floating cutter according to the first embodiment of the present invention is mounted to the mounting part.
8 is a view illustrating a state in which the plunger of the floating cutter according to the first embodiment of the present invention is mounted on the mounting part.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings, and in the description with reference to the accompanying drawings, the same or corresponding components, regardless of reference numerals, are given the same reference numbers and overlapped therewith. A description will be omitted.

1 and 2 are views each illustrating a separated state and a combined state of the plunger 110 of the floating cutter 100 according to the first embodiment of the present invention. And FIGS. 3 and 4 are combined and disassembled cross-sectional views of the plunger 110 of the floating cutter 100 according to the first embodiment of the present invention. And FIG. 5 is a view illustrating the cutter 170 and the elastic member 190 of the floating cutter 100 according to the first embodiment of the present invention.

1 to 5 , the floating cutter 100 according to the first embodiment of the present invention includes a plunger 110 and a cutter 170 . The cutter 170 is inserted into the plunger 110 and protrudes from its tip end, and the plunger 110 is mounted on the mounting portion 200 (refer to FIGS. 7 and 8 ) of the floating device 100 and follows the input pattern. The cutter 170 cuts the object (not shown) while moving.

The plunger 110 includes an adjustment member 112 , a plunger body 130 , and a plunger cap 150 .

The adjusting member 112 is screwed to the upper portion of the plunger body 130 , and includes an adjusting head 114 and an adjusting body 116 . The adjustment head 114 has a larger diameter than that of the adjustment body 116 and protrudes to the outside of the plunger body 130 . And the adjusting body 116 has a cylindrical shape and the adjusting screw thread 120 is formed on its outer peripheral surface. The adjusting screw thread 120 is screwed to the upper screw thread 132 formed on the upper inner circumferential surface of the plunger body 130 , thereby adjusting the insertion depth of the adjusting body 116 with respect to the plunger body 130 .

The protrusion length of the cutter 170 positioned below the adjustment head 114 may be adjusted according to the rotation direction of the adjustment head 114 . For example, when the adjusting head 114 rotates clockwise, the protruding length of the cutter 170 increases while the adjusting body 116 moves downward. Conversely, when the adjustment head 114 rotates counterclockwise, the cutter 170 retracts while the adjustment body 116 moves upward, thereby reducing its protrusion length.

The lower end of the adjustment head 114 may be formed flat, and a center groove 118 may be formed in the center thereof. A cone-shaped cutter head 172 is inserted into the center groove 118 , and the center groove 118 may also have an intaglio shape corresponding to the cone-shaped cutter head 172 . In this way, by forming the cutter head 172 and the center groove 118 in a conical shape, the center position and length of the cutter 170 can be easily adjusted and the cutter 170 is easily coupled to the inside of the plunger 110 . This can be done, and it is possible to prevent play of the cutter 170 during the floating process.

The plunger body 130 is made of two parts having different diameters, and a body through hole 140 is formed in the center of the two parts. And the cutter 170 is movably inserted into the body through hole 140 .

An upper screw thread 132 is formed on the upper inner circumferential surface of the plunger body 130 . The upper screw thread 132 is screwed with the adjusting screw thread 120 of the adjusting member 112 , and thus the depth at which the adjusting body 116 is inserted into the body through hole 140 can be easily adjusted.

An upper flange 134 is formed on the upper outer peripheral surface of the plunger body 130 . The upper flange 134 is a portion that is pressed down while in contact with the upper protrusion 222 of the bracket 220 of the mounting unit 200 (see FIG. 8 ), whereby the plunger 110 is stably coupled to the mounting unit 200 . can be And when the plunger 110 is inserted into the insertion hole 212 of the holder 210 of the mounting part 200, the upper flange 134 is caught on the upper surface of the holder 210 so as not to fall out.

A lower flange 136 is formed in a portion of the plunger body 130 having a reduced diameter. The lower flange 136 is formed under the upper flange 134 and has a smaller diameter. The lower surface of the lower flange 136 is in contact with the upper end of the plunger cap 150, whereby the plunger cap 150 is screwed to the plunger body 130 is stopped, and accurate positioning is possible.

A lower screw thread 138 is formed in the lower portion of the lower flange 136 on the lower outer circumferential surface of the plunger body 130 . A cap screw thread 152 formed on the inner circumferential surface of the plunger cap 150 is screwed to the lower screw thread 138 .

A body through hole 140 is formed in the center of the plunger body 130 . The body through hole 140 is a space in which the cutter 170 is accommodated, and communicates with the cap through hole 156 formed in the center of the plunger cap 150 so that the tip end of the cutter 170 is the plunger 110 . to protrude outside.

The plunger cap 150 is screwed to one end of the plunger body 130 and allows the cutter 170 to protrude to the outside of the plunger 110 through the cap through hole 156 formed in the center. The plunger cap 150 has an accommodating portion 154 corresponding to an internal empty space, and the end of the plunger body 130 is inserted into the accommodating portion 154 . And a cap screw thread 152 is formed on the inner circumferential surface of the receiving part 154 of the plunger cap 150 , which is screwed with the lower screw thread 138 of the plunger body 130 .

A seating step 158 is formed in the receiving portion 154 of the plunger cap 150 . The lower end of the elastic member 190 may be positioned on the seating step 158 . And a cap through hole 156 is formed in the center of the seating step 158 .

A cap end 160 is formed at the end of the plunger cap 150 . The cap end portion 160 has a dome shape with the most convex center, and a cap through hole 156 is formed in the center thereof. Accordingly, the front end of the cutter 170 protrudes toward the center of the cap end 160 . And, since the cap end 160 has a dome shape, the cutting operation of the cutter 170 is not hindered by other portions of the cap end 160 .

The cap end 160 may be made of a material different from that of other parts of the plunger cap 150, for example, the cap end 160 may be made of plastic resin and the other part may be made of metal. .

The cutter 170 has a cylindrical shape having a constant length and includes a cutter head 172 and a cutter body 174 having different diameters. The cutter body 174 has a smaller diameter than that of the cutter head 172 , and its tip is sharply formed and protrudes to the outside of the plunger 110 . And a cutter head 172 is formed at one end of the cutter body 174, and a cutter step 176 is formed by the difference in diameter between the cutter body 174 and the cutter head 172. The upper end of the elastic member 190 is in contact with the cutter step 176 , whereby the cutter 170 is provided with an elastic force protruding upward by the elastic member 190 . And the cutter 170 does not easily come off the plunger 110 by such an elastic force.

A distal end 173 having a conical shape is formed at the upper end of the cutter head 172, and the distal end 173 is inserted into the center groove 118 of the adjusting member 112 having an intaglio shape corresponding thereto.

The elastic member 190 may correspond to a coil spring, and the cutter 170 is inserted in the center thereof. In addition, the elastic member 190 provides an elastic force for upwardly pressing the elastic member 190 while the lower end thereof is positioned on the seating step 158 and the upper end is positioned on the cutter head 172 . When the plunger 110 moves without contacting the object by such an elastic member 190 , it is possible to prevent the cutter 170 from falling out of the plunger 110 . In addition, even when the sharp tip of the cutter 170 is deeply inserted into the object, the elastic member 190 provides a stronger upward pressing force to the cutter 170 so that it can be easily removed from the object.

The present invention is not limited by the shape and material of the elastic member 190 . Therefore, the elastic member according to another embodiment of the present invention may have a hollow cylindrical shape and may correspond to a plastic resin or a plastic coil spring.

6 is a view illustrating the protrusion length of the cutter 170 by the rotation of the adjusting member 112 in the floating cutter 100 according to the first embodiment of the present invention.

Referring to FIG. 6 , the floating cutter 100 is exemplified as cutting the tape 194 from an object made of a backing paper 192 and a tape 194 . At this time, the cutter 170 does not completely cut the backing paper 192 but only cuts the tape 194 to a certain depth, which corresponds to the state b of FIG. 6 . Due to this, the user can use the tape 194 by separating it from the backing paper 192 .

6a corresponds to a shorter protrusion length of the cutter 170 compared to a normal case (case b). As described above, if the protruding length of the cutter 170 is short, the tape 194 is not completely cut, which causes a problem in that the tape 194 cannot be separated from the backing paper 192 . In this case, the adjusting member 112 is rotated in one direction (for example, clockwise) so that the adjusting body 116 of the adjusting member 112 is further inserted into the plunger body 130, thereby cutting the cutter 170. The protrusion length of can be enlarged.

6c corresponds to the length of the protrusion of the cutter 170 is longer than that of the normal case (case b). As described above, if the protruding length of the cutter 170 is long, the tape 194 as well as the backing paper 192 are all cut, so that the tape 194 and the backing paper 192 are separated together. In such a case, the adjusting member 112 is rotated in the other direction (for example, counterclockwise) so that the adjusting body 116 of the adjusting member 112 is separated from the inside of the plunger body 130, thereby cutting the cutter 170. can reduce the protrusion length.

7 is a view illustrating a state in which the plunger 110 of the floating cutter 100 according to the first embodiment of the present invention is mounted on the mounting unit 200, and FIG. 8 is a floating cutter according to the first embodiment of the present invention. It is a view illustrating a state in which the plunger 110 of the cutter 100 is mounted.

7 to 8 , the floating device includes a mounting part 200 for coupling the plunger 110 . The mounting unit 200 includes a holder 210 and a bracket 220 coupled to a side surface of the holder 210 by a fastening member 230 .

In the holder 210 , an insertion hole 212 is formed through the center thereof, and the plunger 110 is inserted into the insertion hole 212 . The inner diameter of the insertion hole 212 may be slightly larger than the outer diameter of the plunger body 130 . The holder 210 is moved by a driving device (not shown) of the floating device to cause the cutter 170 to move in the input pattern. In addition, a hole (not shown) to which the fastening member 230 can be screwed is formed in the side surface of the holder 210 .

The bracket 220 is coupled to one side (eg, front) of the holder 210 by a fastening member 230 and serves to fix the plunger 110 to the holder 210 . The bracket 220 includes a bracket body 226 , an upper protrusion 222 and a lower protrusion 224 , and has a C shape.

The bracket body 226 has a flat plate shape, and a fastening member 230 can be screwed to the center thereof. Referring to FIG. 8 , the bracket body 226 may be formed to have a longer length than the holder 210 , and thereby the upper protrusion 222 and the lower protrusion 224 formed at the upper and lower ends of the bracket body 226 . The holder 210 can be positioned at regular intervals on the upper and lower surfaces of the holder 210 .

The upper protrusion 222 protrudes from the upper end of the bracket body 226 in the direction of the plunger 110 , and its end presses the upper flange 134 of the plunger 110 downward. And the end of the upper protrusion 222 may be formed in a concave curve corresponding to the outer shape of the plunger 110 to be in close contact with the outer peripheral surface of the plunger (110).

The lower protrusion 224 is formed at a predetermined interval below the upper protrusion 222 , and its tip is located below the holder 210 . The end of the lower protrusion 224 may also be concave to correspond to the outer shape of the plunger 110 to be in close contact with the outer circumferential surface of the plunger 110 . The lower protrusion 224 may be in contact with the lower flange 136 .

In order to mount the plunger 110 to the mounting part 200 , the fastening member 230 is loosened and the bracket 220 is loosened. Then, the plunger 110 is inserted into the insertion hole 212 of the holder 210 so that the upper flange 134 is caught on the upper surface of the holder 210 . After that, when the fastening member 230 is rotated and the bracket 220 is in close contact with the plunger 110 in the direction of the plunger 110 , the upper protrusion 222 and the lower protrusion 224 are in close contact with the outer circumferential surface of the plunger 110 and the plunger 110 is fixed. do.

As such, the upper protrusion 222 and the lower protrusion 224 press the plunger 110 from the upper and lower portions of the holder 210 in the lateral direction to prevent shaking or play of the plunger 110 during the cutting process. can do. In addition, since the upper protrusion 222 is in contact with the upper surface of the upper flange 134 and the lower protrusion 224 is in contact with the lower surface of the lower flange 136 , the plunger 110 has the upper protrusion 222 and the lower protrusion 224 . ) can be inserted by press fitting between them. The bracket 220 can support the plunger 110 more firmly by the upper protrusion 222 and the lower protrusion 224 .

Although the above has been described with reference to one embodiment of the present invention, those of ordinary skill in the art may change the present invention in various ways within the scope not departing from the spirit and scope of the present invention described in the claims below. It will be appreciated that modifications and variations are possible.

100: floating cutter
110: plunger
170: cutter
190: elastic member
200: mounting part
210: holder
220: bracket

Claims (5)

cutter;
a plunger into which the cutter is inserted and protruding;
an elastic member for upwardly pressing the cutter from the inside of the plunger; and
and a mounting portion movable in combination with the plunger,
The plunger includes a plunger body into which the cutter is inserted and coupled to the mounting portion, an adjustment member coupled to one end of the plunger body to adjust the protrusion length of the cutter, and the other end of the plunger body coupled to the plunger body. a plunger cap from which the cutter protrudes from the center;
The cutter includes a cutter body and a cutter head formed at an end of the cutter body and having a larger diameter than that of the cutter body;
The plunger cap has a seating step therein,
One end of the elastic member is supported by the cutter head and the other end is supported by the seating step,
The adjusting member has an adjusting body screwed to be movably screwed inside the plunger body, and a center groove is formed in the center of the lower end of the adjusting body,
A cap end having a dome shape is formed at an end of the plunger cap, and the cap end is formed of a plastic resin,
An end of the cutter head has a conical shape, the center groove is engraved corresponding to the shape of the cutter head, and an upper end of the cutter head is inserted into the center groove,
The plunger body has an outwardly protruding upper flange,
The mounting portion includes a holder through which an insertion hole into which the plunger body is inserted and the upper flange is caught, a bracket coupled to a side surface of the holder and having a bracket body, an upper protrusion and a lower protrusion; Including a fastening member rotatably coupled,
The upper protrusion and the lower protrusion are vertically coupled to both ends of the bracket body so that the bracket has a C shape,
When the bracket is in close contact in the plunger direction by the rotation of the tightening member, the upper and lower protrusions are in close contact with the outer circumferential surface of the plunger and the plunger is fixed to the holder,
Ends of the upper and lower protrusions are formed to be concave corresponding to the outer circumferential surface of the plunger, so that the floating cutter can be in close contact with the outer circumferential surface of the plunger.
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