KR20190140595A - Push Roller of Packaging Film Printing Apparatus - Google Patents

Abstract

The present invention relates to a pressing roller of a packaging film printing apparatus, comprising: a cylindrical sleeve both ends of which are open and which has a predetermined length; a first roller which is installed with a predetermined thickness to wrap the outer circumferential surface of the sleeve in a longitudinal direction and includes a thread groove portion provided to surround part of the central portion of the outer circumferential surface thereof; a second roller which is installed to be fitted into the outer circumferential surface of the first roller and includes a fastening portion provided to surround the inner circumferential surface thereof to be screw-fastened with the thread groove portion; and an air shaft one end of which is rotatably coupled to a hinge portion on one side of the printing apparatus, the other end of which is detachably coupled to a coupling portion on the other side of the printing apparatus, and which is inserted into the sleeve to fix the sleeve and acts as the center of rotation of a roller body. According to the present invention, it is possible to improve workability while reducing the weight of the pressing rollers and do the work quickly and safely by decreasing the manpower required for movement and installation of the pressing rollers.

Description

Push Roller of Packaging Film Printing Apparatus

The contents described are related to the pressure roller of the packaging film printing apparatus which is rotated together in a folded state facing the platen roller with the film fabric interposed therebetween in the process of printing the film fabric by the panning roller installed in the packaging film printing apparatus.

First, the following background technology is intended to help understand the contents of the pressing roller of the packaging film printing apparatus to be described later, and the contents mentioned in the background technology do not need to be concluded in the related art.

Food and industrial products are packaged and distributed in a predetermined amount, respectively, and the packaging film for this may be considered to be sealed, light-shielding, waterproof, speculative, and antimicrobial depending on the characteristics of the contents.

The packaging film is produced in various ways according to the contents, and in the case of food packaging paper where food is accommodated, paraffin wax and silicone oil are coated on paper or nonwoven fabric among base paper such as paper, nonwoven fabric and vinyl.

In addition, depending on the packaged product, PE, PP, PS, PET, biodegradable film, etc. may be manufactured by coating or laminating a predetermined thickness on such a base paper.

Gravure printing, which is applied to the printing of packaging films, is a type of concave plate printing, which is the most widely used printing method of concave plate printing, and is a representative printing method of concave plates using photography.

Gravure printing is used in the publishing and printing fields of magazines and weekly papers, and in the business printing fields such as wallpaper, printing, printing, transfer paper, and package printing. Especially, gravure printing is known as the most suitable printing method for soft packaging printing. It has been introduced and developed around.

The composition of gravure printing is to apply ink to the concave carved wire of the cylinder cylinder, which is a metal cylinder. The printed matter may be paper, metal, synthetic resin, fiber, or the like, and the printing method is determined according to each use.

Here, in the configuration of the pressure roller, a fixed shaft having a predetermined length, a cylindrical sleeve fitted and coupled to the fixed shaft, a roller body made of a rubber or silicone material wrapped and fixed to the outer circumferential surface of the sleeve and fixed, It is installed between the outer circumferential surface of the shaft and the inner circumferential surface of the sleeve may be configured as a bearing that allows the sleeve and the roller body to rotate together with the movement of the film fabric in a state where the fixed shaft is stopped.

The pressure rollers configured as described above are installed on the packaging film printing apparatus so that the shaft centers are parallel to the shaft centers of the plate rollers, and both ends of the fixing shafts of the pressure rollers are installed on the installation parts provided on both sides of the packaging film printing apparatus. do.

At this time, the roller body should have a length corresponding to the printing range of the pandong roller, and according to the various printing range of the pandong roller, a plurality of pressure rollers need to be prepared with different roller body length, pandong installed in the packaging film printing apparatus In consideration of the roller, the pressure roller having the length of the roller body corresponding to the printing range of the installed plated roller is selected and installed.

Therefore, when the printing range of the platen roller is changed, a plurality of presses have to be installed since the existing installed press roller is separated from the packaging film printing apparatus, and then a new press roller having a length of the roller body corresponding to the changed range of the platen roller is installed. As rollers are needed, the cost of manufacturing the rollers increases, and the heavy weight of the rollers requires a lot of manpower for moving and installing them, and the workers are injured during the movement and installation of the rollers. In many cases, the work for installing the pressure roller in the installation portion of the packaging film printing apparatus also had a complicated and time-consuming problem.

Republic of Korea Patent Publication No. 10-2004-0083818 (Published October 10, 2004)

Therefore, the contents described are devised to solve the problems described above, while improving the workability while reducing the weight of the pressure roller, and reducing the consumption of manpower caused by the movement and installation of the pressure roller safely and quickly work. It may include the purpose of providing a press roller of the packaging film printing apparatus to be made.

The technical problems to be solved by the above description need not be limited to the above-mentioned technical problems, and other technical problems which are not mentioned above should be clearly understood by those skilled in the art to which the descriptions belong. It can be understood.

The content described by the preferred embodiment of the present invention,

Both ends are open, the cylindrical sleeve having a predetermined length,

A first roller installed on the outer circumferential surface of the sleeve with a predetermined thickness along a length direction, the screw roller being wrapped around the central portion of the outer circumferential surface, and installed;

A second roller installed to be inserted into an outer circumferential surface of the first roller, and a fastening part wrapped and installed to be screwed to the screw groove part on an inner circumferential surface thereof;

One end is rotatably coupled to one hinge portion of the printing apparatus, the other end is detachably coupled to the other coupling portion of the printing apparatus, and is fitted into the sleeve to fix the sleeve, and the center of rotation of the roller body. It is configured to include an air shaft.

More preferably, the air shaft is formed with a plurality of holes in the surface along the longitudinal direction, one outer peripheral surface of the pipe connected to the inner circumferential surface and the sliding member of the connecting tube coupled to the hinge portion rotatably connected;

A tube installed along the longitudinal direction in the pipe,

A nozzle pipe installed inside the tube and having a nozzle hole on the surface thereof so that air supplied from the air supply line connected to the coupling part is discharged to the outside to expand the tube;

Located below the hole of the pipe and elastically enters and exits the hole of the pipe according to the expansion and contraction of the tube, the upper surface may be configured to include a plurality of fasteners having the same curvature as the inner peripheral surface of the sleeve.

According to another preferred embodiment of the present invention,

Both ends are open, the cylindrical first sleeve having a predetermined length,

A second sleeve which is rotatably wrapped and installed on an outer circumferential surface of the first sleeve with a sliding member interposed therebetween;

A first roller installed on the outer circumferential surface of the second sleeve with a predetermined thickness along a length direction, the screw groove being wrapped around the central portion of the outer circumferential surface, and installed;

A second roller installed to be inserted into an outer circumferential surface of the first roller, and a fastening part wrapped and installed to be screwed to the screw groove part on an inner circumferential surface thereof;

One end is rotatably coupled to one hinge portion of the printing apparatus, the other end is detachably coupled to the other coupling portion of the printing apparatus, and is fitted into the first sleeve to fix the first sleeve. It may be configured to include an air shaft that is the center of rotation of the roller body.

More preferably, the air shaft is formed with a plurality of holes in the surface along the longitudinal direction, one outer peripheral surface of the pipe is coupled to the connection pipe of the connecting portion coupled to the hinge portion,

A tube installed along the longitudinal direction in the pipe,

A nozzle pipe installed inside the tube and provided with a nozzle hole on the surface thereof so that air supplied from the air supply line connected to the coupling part is discharged to the outside to expand the tube;

Located below the hole of the pipe and elastically enters and exits the hole of the pipe according to the expansion and contraction of the tube, the upper surface may be configured to include a plurality of fasteners having the same curvature as the inner peripheral surface of the first sleeve.

More preferably, an anti-slip member may be further provided on the surface of the fixture.

More preferably, a stopper may be provided on one side of the pipe outer circumferential surface of the air shaft so that one end of the sleeve fitted to the pipe is caught and the installation position of the sleeve can be determined on the air shaft.

More preferably, a stopper may be provided on one side of the pipe outer circumferential surface of the air shaft so that one end of the first sleeve fitted into the pipe may be caught and the installation position of the first sleeve may be determined on the air shaft.

More preferably, the sleeve may be made of fiber reinforced plastic or carbon fiber reinforced plastic.

More preferably, the first sleeve and the second sleeve may be composed of fiber reinforced plastic or carbon fiber reinforced plastic.

More preferably, fixing members may be fastened to both sides of the screw groove to prevent the flow of the second roller which is screwed to the screw groove.

More preferably, the fixing member may be further provided with an anti-rotation member on the inner surface facing the second roller.

The pressing roller of the packaging film printing apparatus according to the description has the following effects.

That is, the pressure roller is installed in the air shaft and the sleeve is fixed to the air shaft, and the roller body wrapped around the sleeve is composed of the first roller and the second roller, the second roller of various lengths to the first roller selectively The roller body can be easily and quickly manufactured according to the various printing areas of the pandong roller, and the production of the roller body becomes easy, and the roller body of the required standard can be quickly and easily configured to be used. It has the effect of further improving.

Here, since the effects of the contents described above are naturally exerted by the configuration of the contents described regardless of whether the inventor recognizes them, the above-described effects are only a few effects according to the contents described, and all the effects grasped or actualized by the inventors. It should not be accepted that it is listed.

In addition, the effects of the contents described should be further grasped by the entire description of the specification, even if not described in explicit sentences even those having ordinary knowledge in the technical field to which the contents described are having such effects through this specification. Any effect that can be recognized as should be seen as an effect described herein.

1 is a plan view illustrating a pressure roller installed in the packaging film printing apparatus according to an embodiment of the contents described.
Figure 2 is a front sectional view of the main portion illustrating a pressure roller installed in the packaging film printing apparatus according to an embodiment of the contents described.
3 is a main sectional front view showing an operation process of the air shaft of the pressure roller installed in the packaging film printing apparatus according to an embodiment of the contents described.
4 is a cross-sectional view illustrating a state in which the sleeve and the first and second rollers of the pressure roller installed in the packaging film printing apparatus according to the embodiment of the present disclosure are configured in various standards.
5 is a plan view illustrating a pressure roller installed in the packaging film printing apparatus according to another embodiment of the present disclosure.
6 is a main sectional front view illustrating the pressure roller installed in the packaging film printing apparatus according to another embodiment of the present disclosure.
7 is a main sectional front view showing an operation process of the air shaft of the pressure roller installed in the packaging film printing apparatus according to another embodiment of the contents described.
8 is a cross-sectional view illustrating a state in which the first and second sleeves and the first and second roller bodies of the pressure roller are installed in the packaging film printing apparatus according to another embodiment of the present disclosure.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

This is intended to explain in detail enough to enable one skilled in the art to easily describe the described contents, which does not mean that the technical spirit and scope of the described contents are limited.

In addition, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description, terms specifically defined in consideration of the configuration and operation of the contents described will vary depending on the intention or custom of the user or operator The definitions of these terms should be made based on the contents throughout the specification.

First, the construction of the pressure roller of the packaging film printing apparatus according to an embodiment of the contents described in the cylindrical sleeve 100 having a predetermined length as shown in Figures 1 to 3, and is wrapped around the outer peripheral surface of such a sleeve 100 is installed The roller body 200 and the sleeve 100 in which the roller body 200 is installed are fitted and fixed, one end of which is rotatably installed on the other side of the printing apparatus 400, and the other end of the roller body 200 is provided on the other side of the printing apparatus 400. It may be configured to include a removable air shaft 300, and look at in detail for each of these components are as follows.

First, the sleeve 100,

It is formed in a cylindrical shape having a predetermined length in the open state on both sides, the first roller 200 is wrapped around the outer peripheral surface is installed.

The sleeve 100 has an inner diameter of a predetermined size so that the air shaft 300 can be inserted therethrough, and the inner diameter of the sleeve 100 has an outer diameter larger than the outer diameter of the air shaft 300 while the air shaft 300 ), The sleeve 100 may be fixed or separated from the air shaft 300 through the fastener 350 which is provided and operated.

The sleeve 100 may be made of a metal material, but in order to reduce the weight, the sleeve 100 may be made of high strength synthetic resin, for example, fiber reinforced plastic (FRP) or carbon fiber reinforced plastic (CFRB). Carbon Fiber Reinforced Plastic).

Roller body 200,

It is fitted to the outer circumferential surface of the sleeve 100 described above, is installed on the air shaft 300 to be described later to constitute a pressure roller.

Although the roller body 200 is not illustrated in the drawings, the roller body 200 may be configured as a single body, and may be configured to protrude to have an outer diameter larger than the outer diameter of both sides of the central portion corresponding to the printing area.

1, the roller body 200 includes a first roller 210 and a second roller 220, as shown in FIG. 1, in which the second roller 220 is coupled to the first roller 210. It is composed of the form.

That is, the first roller 211 has the same length as the sleeve 100 described above, and is formed in a cylindrical shape so as to be wrapped along the longitudinal direction on the outer circumferential surface of the sleeve 100, wherein the sleeve 100 and the first One roller 210 will have the same center of gravity.

The material of the first roller 210 may be variously modified by rubber, silicone, urethane, synthetic resin, or the like.

The outer circumferential surface of the first roller 210 is provided with a screw groove 211 to have a predetermined length from the center to both sides in the longitudinal direction.

The screw groove 211 is specifically cylindrical, and its inner circumferential surface is coupled to the outer circumferential surface of the first roller 210, and the screw groove is continuously formed on the opposite outer circumferential surface.

In another embodiment, the screw groove 211 may be integrally formed with the first roller 210, and a portion of the outer circumferential surface of the first roller 210 may be configured as the screw groove.

The second roller 220 has a cylindrical shape so as to be wrapped in the center of the first roller 210 while having a predetermined length, in this case, the sleeve 100 and the first roller 210 and the second roller 220 has the same center of gravity.

The material of the second roller 220 may be variously modified to rubber, silicone, urethane, synthetic resin, or the like.

Since the second roller 220 is installed at the center of the first roller 210, the fastening part 221 is formed on the inner circumferential surface of the second roller 220, so that the fastening part 221 is the first roller described above. It is screwed to the screw groove 211 of the (210).

Specifically, the fastening part 221 is cylindrical, and its inner circumferential surface is continuously formed to be screwed with the screw groove of the screw groove portion 211, and the opposite outer circumferential surface is coupled with the inner circumferential surface of the second roller 220.

In another embodiment, the fastening part 221 may be integrally formed with the second roller 220 while the inner circumferential surface of the second roller 220 may be formed with a screw line.

Therefore, when the roller body 200 is configured, when the second roller 220 is fitted with the shaft center coinciding with one side of the first roller 210 provided with the screw groove 211, the second roller 220 is fastened. The part 221 is in contact with the screw groove 211 of the first roller 210, when the second roller 220 is rotated in this state, the fastening portion 210 of the second roller 220 is the first roller ( Along with the screw groove 211 of the 210 is moved in a screw coupled state.

When the roller body 200 is configured as described above, both ends of the first roller 210 are naturally stepped with the second roller 220 while the second roller 220 protrudes from the center of the first roller 210. When the roller body 200 is moved by holding both ends of the stepped first roller 210 as described above, the second roller 220 which is in contact with the film fabric is prevented from being contaminated by unnecessary contact with the operator. It can be, using the stepped portion will be able to carry the roller body 200 more conveniently.

On the other hand, as the length of the second roller 220 corresponds to the printing range of the platen roller, the second roller 220 of different lengths is installed in the first roller 110 according to various printing ranges of the platen roller. The roller body 200 may be configured in another form.

That is, the second roller 220 having different lengths as shown in (a) (b) and (c) of FIG. 4 is selected to select the appropriate second roller 220 according to the printing range of the platen roller, The roller body 220 may be combined with the first roller 210 to make the roller body 220, and then installed on the air shaft 300 of the printing apparatus 400.

Of course, the second roller 220 of various sizes may be combined with each of the first rollers 210 to make a plurality of roller bodies 200, and then select and use the required roller bodies 200.

Here, when an error occurs between the center position of the second roller 220 and the printing range center position of the pan roller roller in the state in which the second roller 220 is coupled to the first roller 210 in the first roller 210. While the screwed second roller 220 is rotated forward or reverse as necessary, the center position of the second roller 220 and the printing range center position of the platen roller may coincide with each other.

In addition, before screwing the second roller 220 to the first roller 210, a fixing member 230 such as a washer nut is first fastened to the screw groove 211 of the first roller 210 to screw the groove. After moving to one end of the 211, and then, the second roller 220 is screwed to the first roller 210 and then another fixing member 230 of the screw groove of the first roller 210 ( 211) to be positioned at the other end of the screw groove 211, and both fixing members 230 are rotated in the state in which the second roller 220 is finally positioned at the correct position in the first roller 210, respectively. If the second roller 220 is in contact with both sides, it is possible to prevent the position of the second roller 220 is unnecessarily changed by the fixing member 230 to the unnecessary rotation.

In addition, the fixing member 230 is provided with an annular anti-rotation member (not shown in the drawing) on the inner surface facing the second roller 220, such as rubber or silicon, so that the second roller 220 Rotation of the second roller 220 can be effectively prevented by the anti-rotation member positioned between the second roller 220 and the fixing member 230 when the fixing member 230 is folded on both sides. .

The air shaft 300,

When the sleeve 100 in which the roller body 200 is wrapped on the outer circumferential surface of the printing apparatus 400 is fitted, the sleeve 100 is fixed. The air shaft 300 is connected to the sleeve 100. It has the same center of gravity as the roller body (200).

Since the air shaft 300 is installed in the printing apparatus 400, the air shaft 300 is in contact with the platen roller with the film fabric interposed therebetween, and the rotation shafts of the air shaft 300 and the platen roller are parallel to each other.

Both ends of the air shaft 300 may be detachably installed on opposite sides of the printing apparatus 400, but preferably, the air shaft 300 is rotatably installed on one side of the printing apparatus 400. The other side of the 300 may be detachably installed in the printing apparatus 400.

That is, as shown in FIGS. 1 to 3, the air shaft 300 may include a pipe 320, a tube 330, a nozzle pipe 340, and a fixture 350.

Here, the pipe 320 has a cylindrical shape having a predetermined length and has an outer diameter smaller than the inner diameter of the sleeve so that the pipe 320 can be fitted into the sleeve 100, and the pipe 320 is fitted into the sleeve 100. The outer circumferential surface of the pipe 320 and the inner circumferential surface of the sleeve 100 form a predetermined interval.

On the outer circumferential surface of the pipe 320 is formed a plurality of holes 321 in the form of a straight line or zigzag along the longitudinal direction radially with respect to the axial center, wherein the hole 321 is a polygon such as square or rectangular, round, oval, etc. Various modifications can be made.

One end of the pipe 320 is rotatably coupled to one hinge portion 420 of the printing apparatus 400 through the connection portion 310 and the connection pipe 311, wherein the connection portion 310 is connected to the hinge portion 420 One end of the pipe 320 is fitted into the interior of the connection pipe 311 formed at right angles with respect to, and the sliding member 312 such as a bearing is installed between the outer peripheral surface of the one end and the inner peripheral surface of the connection pipe 311. The pipe 320 may be rotated around the connected pipe 311.

An air supply line 410 is connected to one side of the connection part 310 to allow air to flow into the pipe 320, and the other end of the pipe 320 is a coupling part provided on the other side of the printing device 400. 430 and detachably coupled.

Tube 330 is installed along the longitudinal direction inside the pipe 320, the air is introduced into the air through the air supply line 410 is expanded or contracted to the original state through the blocking of the air supply line 410 Can be.

The nozzle pipe 340 is installed along the longitudinal direction inside the tube 330 to maintain the outer appearance of the tube 330, and a plurality of nozzle holes 341 are provided on the outer circumferential surface of the nozzle pipe 340 to supply air The air flowing through the line 410 is injected to the outside through the nozzle hole 341, and the injected air expands the tube 330 surrounding the nozzle pipe 340.

Fixture 350 is installed inside the hole 321 of the pipe 320 described above to enter the inside and outside of the hole 321, the inner peripheral surface of the pipe 320 on both upper surfaces of the bracket coupled to the lower end of the fixture 350 And a spring 351 are connected.

Therefore, when the tube 330 expands, the tube 330 that is expanded pushes the lower end of the fixture 350 so that the top of the fixture 350 protrudes from the outer circumferential surface of the pipe 320 through the hole of the pipe 320. When the pipe 320 is fitted inside the sleeve 100, the fastener 350 protruding from the hole 321 is in close contact with the inner circumferential surface of the sleeve 100, so that unnecessary movement of the sleeve 100 is caused. This can be prevented, in which case the spring 351 is kept compressed.

And when the tube 330 shrinks to its original state, as the external force that raises the fixture 350 is removed, the fixture 350 is lowered by the restoring force of the spring 351, and the upper end of the fixture 350 is The sleeve 100 into which the pipe 320 is fitted while being moved into the hole of the pipe 320 may be freely separated from the pipe 320 without interference of the fixture 350.

Here, the fixture 350 may be of various shapes that can pass through the hole 321 formed on the outer circumferential surface of the pipe 320, may be configured in the same shape as the shape of the hole 321, the fixture 350 Unevenness or protrusion may be formed on the upper surface of the upper surface of the non-slip member, such as silicone or rubber, may be coated or attached in the form of a pad.

In addition, the upper surface of the fastener 350 is in contact with the inner circumferential surface of the sleeve 100, the curvature of the upper surface of the fastener 350 and the curvature of the inner circumferential surface of the sleeve consists of the same curvature, the upper surface of the fastener 350 and the sleeve 100 The inner circumferential surface of the) is more effectively folded to prevent the unnecessary movement of the sleeve 100 folded into the fixture 350.

On the other hand, the pipe 320 of the air shaft 300 may be provided so that the stopper 322 protrudes on the outer circumferential surface facing toward the connecting portion 310, the position of the stopper 322 is a pipe ( When the sleeve 100 having the roller body 200 is fitted to the 320, the front end portion of the sleeve 100 is caught by the stopper 322 and the sleeve 100 is accurately fixed to the predetermined position on the air shaft 300. Can be.

Here, the shape and number of the stopper 322 may be configured in various shapes and numbers without being limited to any one form, the stopper 322 may be formed integrally extended to the outer peripheral surface of the pipe 320, It may be configured to be assembled to the outer peripheral surface of the pipe 320.

In addition, the stopper 322 is configured to be assembled while moving along the longitudinal direction of the pipe 320 while being assembled to the outer peripheral surface of the pipe 320 to adjust the installation position of the sleeve 100 through the variable position of the stopper 322 It may be configured.

Embodiment of the described content is a configuration in which the air shaft 300 is rotated together in accordance with the rotation of the roller body 200, another embodiment of the described content as shown in Figures 5 to 7 air shaft (300a) ) May be configured to rotate only the roller body 200a in a fixed state.

In other words, as shown in FIG. 5, the press roller of the packaging film printing apparatus is configured by the sliding member 110 in a state where the first sleeve 100a and the first sleeve 100a are accommodated therein. The second sleeve 100b rotatably connected, the roller body 200a which is wrapped and installed on the outer circumferential surface of the second sleeve 100b, and the first sleeve 100a on which the roller body 200a is installed are fitted into and fixed. One end may be rotatably installed at one side of the printing apparatus 400 and the other end may be configured to include an air shaft 300a that is detachably fixed to the other side of the printing apparatus 400. Looking in more detail as follows.

First, the first sleeve 100a,

It is composed of a cylindrical shape having a predetermined length in the open state on both sides, has an inner diameter larger than the outer diameter of the air shaft 300a so that the air shaft 300a can be penetrated therein, provided in the air shaft 300a The first sleeve 100a may be fixed or separated from the air shaft 300a through the fastener 350a that is operated.

The second sleeve 100b,

It is composed of the same length as the first sleeve (100a), having a larger inner diameter than the outer diameter of the first sleeve (100a) is received through the first sleeve (100a) therein, the second inside of the sleeve (100b) As the first sleeve 100a is accommodated, the outer circumferential surface of the first sleeve 100a and the inner circumferential surface of the second sleeve 100b are connected through a sliding member 110 such as a bearing, so that the first sleeve 100a and the second sleeve The first sleeve 100a may be the center and the second sleeve 100b may be rotated while the 100b is the same rotation center.

And the roller body (200a) is wrapped around the outer surface of the second sleeve (100b) is installed.

Although the first sleeve 100a and the second sleeve 100b described above may be made of a metal material in the material thereof, the first sleeve 100a and the second sleeve 100b may be made of fiber reinforced plastic or carbon fiber reinforced plastic, which is preferably a high strength synthetic resin.

The roller body 200a,

It is fitted to the outer circumferential surface of the above-described second sleeve 100b, and is installed on the air shaft 300a to be described later to form a pressure roller.

Although the roller body 200a is not illustrated in the drawings, the roller body 200a may be configured as a single body. The roller body 200a may be configured to protrude to have a larger outer diameter than the outer diameter of both sides.

According to another embodiment of the present invention, as illustrated in FIG. 5, the roller body 200a includes a first roller 210a and a second roller 220a, and the second roller 220a is coupled to the first roller 210a. It is composed of the form.

That is, the first roller 210a has the same length as the above-described second sleeve 100b and has a cylindrical shape so as to be wrapped along the longitudinal direction on the outer circumferential surface of the second sleeve 100b. The sleeve 100a, the second sleeve 100b, and the first roller 210a have the same axis center.

The material of the first roller 210a may be variously modified with rubber, silicone, urethane, synthetic resin, or the like.

On the outer circumferential surface of the first roller 210a, a screw groove portion 211a is installed to have a predetermined length from the center to both sides in the longitudinal direction.

The screw groove portion 211a is specifically cylindrical and its inner circumferential surface is coupled to the outer circumferential surface of the first roller 210a, and the screw groove is continuously formed on the opposite outer circumferential surface.

In another embodiment, the screw groove portion 211a may be integrally formed with the first roller 210a, and a portion of the outer circumferential surface of the first roller 210a may be configured as the screw groove.

The second roller 220a has a cylindrical shape so as to be wrapped in the center of the first roller 210a while having the above-described constant length. In this case, the first sleeve 100a, the second sleeve 100b, and the first roller The first roller 210a and the second roller 220a have the same axis center.

The material of the second roller 220a may be variously modified by rubber, silicone, urethane, synthetic resin, or the like.

When the second roller 220a is installed at the center of the first roller 210a, the fastening part 221a is formed on the inner circumferential surface of the second roller 220a, so that the fastening part 221a is the first roller. It is screwed to the screw groove portion 211a of the 210a.

Specifically, the fastening part 221a is cylindrical and its inner circumferential surface is continuously formed to be screwed with the screw groove of the screw groove portion 211a, and the opposite outer circumferential surface is coupled with the inner circumferential surface of the second roller 220a.

In another embodiment, the fastening part 221a may be integrally formed with the second roller 220a, and the inner circumferential surface of the second roller 220a may be formed with a screw line.

Therefore, when the roller body 200a is configured, when the second roller 220a is fitted with the shaft center coinciding with one side of the first roller 210a provided with the screw groove 211a, the second roller 220a is fastened. The part 221a comes into contact with the screw groove 211a of the first roller 210a, and in this state, when the second roller 220a is rotated, the fastening part 210a of the second roller 220a is the first roller ( Along with the screw groove 211a of the 210a, the screw is rotated in a coupled state.

When the roller body 200a is configured as described above, both ends of the first roller 210a are naturally stepped with the second roller 220a while the second roller 220a protrudes from the center of the first roller 210a. In this way, when the roller body 200a is moved by holding both ends of the stepped first roller 210a as described above, the second roller 220a in which the film fabric is folded is prevented from being contaminated by unnecessary contact with the operator. It can be, by using a stepped portion it is possible to carry the roller body (200a) more conveniently.

On the other hand, as the length of the second roller 220a corresponds to the printing range of the platen roller, the second roller 220a having different lengths is installed in the first roller 110a according to various printing ranges of the platen roller. Another type of roller body 200a may be configured.

That is, the second roller 220a having different lengths as shown in (a) (b) and (c) of FIG. 8 is selected to select the appropriate second roller 220a according to the printing range of the platen roller, The roller body 220a may be combined with the first roller 210a and then installed on the air shaft 300a of the printing apparatus 400.

Of course, the second roller 220a of various sizes may be combined with each of the first rollers 210a to make a plurality of roller bodies 200a, and then select and use the required roller bodies 200a.

Here, when an error occurs between the center position of the second roller 220a and the printing range center position of the pan roller roller in a state in which the second roller 220a is coupled to the first roller 210a, the first roller 210a is connected to the first roller 210a. The center position of the second roller 220a and the printing range center position of the platen roller may coincide with each other while the screwed second roller 220a is rotated forward or backward as necessary.

In addition, before screwing the second roller 220a to the first roller 210a, a fixing member 230 such as a washer nut is first fastened to the screw groove 211a of the first roller 210a to screw the groove. After moving to one end of the (211a), after screwing the second roller (220a) to the first roller (210a) and then another fixing member 230 of the screw groove portion (1) of the first roller (210a) 211a) to be positioned at the other end of the screw groove portion 211a, and both fixing members 230 are rotated in the state where the second roller 220a is finally positioned at the correct position in the first roller 210a. If the second roller 220a is in contact with both sides of the second roller 220a, the second roller 220a may be unnecessarily rotated by the fixing member 230 to prevent the position thereof from being unnecessarily changed.

In addition, the fixing member 230 is provided with an annular anti-rotation member that can generate a friction force such as rubber or silicon on the inner surface facing the second roller 220a, thereby fixing members on both sides of the second roller 220a. Rotation of the second roller 220a can be effectively prevented by the rotation preventing member positioned between the second roller 220a and the fixing member 230 when the 230 is folded.

Air shaft 300a according to another embodiment of the present invention,

After the roller body 200a is installed in the printing apparatus 400 and penetrated into the inside of the first sleeve 100a accommodated inside the second sleeve 100b and the second sleeve 100b, The one sleeve 100a is fixed, and the air shaft 300a has the same center of gravity as the first sleeve 100a, the second sleeve 100b, and the roller body 200a.

Since the air shaft 300a is installed in the printing apparatus 400, the air shaft 300a is in contact with the platen roller with the film fabric interposed therebetween, and the rotation shafts of the air shaft 300a and the platen roller are parallel to each other.

Both ends of the air shaft 300a may be detachably installed on opposite sides of the printing apparatus 400, but preferably the air shaft 300a is rotatably installed on one side of the printing apparatus 400, and the air shaft The other side of the 300a may be detachably installed in the printing apparatus 400.

That is, the air shaft may include a pipe 320a, a tube 330a, a nozzle pipe 340a, and a fixture 350a as shown in FIGS. 6 and 7.

Here, the pipe 320a is formed in a cylindrical shape having a predetermined length, and has an outer diameter smaller than the inner diameter of the first sleeve so that the pipe 320a may be fitted into the first sleeve 100a. When the pipe 320a is fitted in the pipe, the outer circumferential surface of the pipe 320a and the inner circumferential surface of the first sleeve 100a have a predetermined interval.

The pipe 320a has a plurality of holes 321a formed in a straight line or zigzag shape along the longitudinal direction while forming a radial shape on the outer circumferential surface thereof. The hole 321a is a polygon such as a square or a rectangle, a circle, an oval, or the like. Various modifications can be made.

One end of the pipe 320a is rotatably coupled to one hinge portion 420 of the printing apparatus 400 through the connection portion 310a and the connection pipe 311a, in which the connection portion 310a is connected to the hinge portion 420. One end of the pipe 320a is fitted into the connection pipe 311a formed at a right angle with respect to the connection pipe 311a, and the air is supplied to the connection portion 310a to allow air to flow into the pipe 320a. The line 410 is connected, and the other end of the pipe 320a is detachably coupled to the coupling part 430 provided on the other side of the printing apparatus 400.

The tube 330a is installed along the longitudinal direction inside the pipe 320a, and air is introduced into the pipe through the air supply line 410 to expand or contract in its original state by blocking the air supply line 410. Can be.

The nozzle pipe 340a is installed along the longitudinal direction in the above-described tube 330a to maintain the outer shape of the tube 330a, and a plurality of nozzle holes 341a are provided on the outer circumferential surface of the air supply line 410. The air introduced into the air is injected through the nozzle hole 341a to the outside, and the injected air expands the tube 330a surrounding the nozzle pipe 340a.

The fastener 350a is installed in the vertical direction below the hole 321a of the pipe 320a to enter the inside and the outside of the hole 321a, and the inner circumferential surface of the pipe 320a is provided on both upper surfaces of the bracket coupled to the bottom of the fastener 350a. It is connected with the spring 351a.

Therefore, when the tube 330a expands, the tube 330a to be expanded pushes up the lower end of the fixture 350a so that the upper end of the fixture 350a passes through the hole of the pipe 320a from the outer circumferential surface of the pipe 320a. When the first sleeve 100a is inserted into the pipe 320a, the fixing tool 350a protruding from the hole is in close contact with the inner circumferential surface of the first sleeve 100a, and thus the unnecessary portion of the first sleeve 100a is not present. Movement is prevented, and the spring 351a is kept compressed.

When the tube 330a is contracted to its original state, the fastener 350a is lowered by the restoring force of the spring 351a, and the upper end of the fastener 350a is lowered into the hole 321a of the pipe 320a. The first sleeve 100a fitted to the pipe 320a may be freely separated from the pipe 320a without interference of the fixture 350a.

Here, the fixture 350a may be configured in various shapes that may pass through the hole 321a formed on the outer circumferential surface of the pipe 320a, may be configured in the same shape as the shape of the hole 321a, or the fixture 350a. Unevenness or protrusion may be formed on the upper surface of the), and a non-slip member such as silicone or rubber having a large friction force may be coated or attached in the form of a pad.

In addition, when the upper surface of the fastener 350a is in contact with the inner circumferential surface of the first sleeve 100a, the upper surface of the fastener 350a is configured to have the same curvature as the curvature of the inner circumferential surface of the first sleeve 100a. The upper surface and the inner circumferential surface of the first sleeve 100a may be more effectively folded to prevent a phenomenon in which the first sleeve 100a that is in contact with the fixture 350a is unnecessarily moved.

On the other hand, the pipe 320a of the air shaft 300a may be provided so that the stopper 322a protrudes from the outer circumferential surface facing toward the connecting portion 310a, and the position of the stopper 322a is the pipe (of the air shaft 300a). When the first sleeve 100a is fitted together with the roller body 200a and the second sleeve 100b to 320a, the tip of the first sleeve 100a is caught by the stopper 322a, and thus on the air shaft 300a. The first sleeve 100a may be accurately positioned and fixed at a predetermined position.

Here, the shape and number of the stopper 322a need not be determined as one, but may be configured in various shapes and various numbers, and the stopper 322a may be integrally extended to the outer circumferential surface of the pipe 320a. , May be configured to be assembled to the outer circumferential surface of the pipe 320a, the stopper 322a is configured to be assembled while moving along the longitudinal direction of the pipe 320a while being assembled to the outer circumferential surface of the pipe 320a (stopper ( It may be configured to adjust the installation position of the first sleeve (100a) through the variable position of the 322a.

Thus described contents are not limited to the described embodiments, it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the described contents. Therefore, such modifications or variations will have to belong to the claims of the contents described.

100 ,: sleeve 100a: first sleeve
100b: second sleeve 110, 312: sliding member
200, 200a: Roller body 210, 210a: First roller
211,211a: screw groove 220, 220a: second roller
221,221a: Fastening part 300, 300a: Air shaft
310, 310a: connector 311, 311a: connector
320, 320a: pipe 321, 321a: hole
322, 322a: Stopper 330, 330a: Tube
340, 340a: nozzle pipe 341, 341a: nozzle hole
350, 350a: Fixture 351, 351a: Spring
400: printing apparatus 410: air supply line
420: hinge portion 430: coupling portion

Claims (11)

A cylindrical sleeve having both ends open and having a predetermined length;
A first roller installed on the outer circumferential surface of the sleeve with a predetermined thickness along a length direction, the screw groove being wrapped around the central portion of the outer circumferential surface and installed;
A second roller fitted to the outer circumferential surface of the first roller and having a fastening portion wrapped to be screwed to the screw groove portion on the inner circumferential surface; And
One end is rotatably coupled to one hinge portion of the printing apparatus, the other end is detachably coupled to the other coupling portion of the printing apparatus, and is inserted into the sleeve to fix the sleeve, and the center of rotation of the roller body. Become an air shaft;
Pressing roller of the packaging film printing apparatus included. The method of claim 1,
The air shaft,
A pipe having a plurality of holes formed in a surface along a longitudinal direction thereof, the outer circumferential surface of which is rotatably connected via a sliding member and an inner circumferential surface of a connecting pipe coupled to the hinge portion;
A tube installed along the longitudinal direction in the pipe;
A nozzle pipe installed inside the tube and having a nozzle hole on the surface thereof so that air supplied from the air supply line connected to the coupling part is discharged to the outside to expand the tube; And
A plurality of fasteners positioned below the hole of the pipe to elastically enter and exit the hole of the pipe according to the expansion and contraction of the tube, the upper surface having the same curvature as the inner circumferential surface of the sleeve;
Pressing roller of the packaging film printing apparatus included. A cylindrical first sleeve having both ends open and having a predetermined length;
A second sleeve rotatably wrapped with a sliding member disposed on an outer circumferential surface of the first sleeve;
A first roller installed on the outer circumferential surface of the second sleeve with a predetermined thickness in a longitudinal direction, the screw groove being wrapped around the central portion of the outer circumferential surface;
A second roller fitted to the outer circumferential surface of the first roller and having a fastening portion wrapped to be screwed to the screw groove portion on the inner circumferential surface; And
One end is rotatably coupled to one hinge portion of the printing apparatus, the other end is detachably coupled to the other coupling portion of the printing apparatus, and is fitted into the first sleeve to fix the first sleeve. An air shaft serving as a center of rotation of the roller body;
Pressing roller of the packaging film printing apparatus included. The method of claim 3, wherein
The air shaft,
A pipe having a plurality of holes formed in a surface along a longitudinal direction thereof, the outer circumferential surface of which is coupled to a connecting tube of a connecting portion coupled to the hinge portion;
A tube installed along the longitudinal direction in the pipe;
A nozzle pipe installed inside the tube and having a nozzle hole on the surface thereof so that air supplied from the air supply line connected to the coupling part is discharged to the outside to expand the tube; And
A plurality of fasteners positioned below the hole of the pipe to elastically enter and exit the hole of the pipe according to the expansion and contraction of the tube, the upper surface having the same curvature as the inner circumferential surface of the first sleeve;
Pressing roller of the packaging film printing apparatus included. The method according to claim 2 or 4,
The pressure roller of the packaging film printing apparatus is further provided with a non-slip member on the surface of the fixture. The method of claim 2,
A pressure roller of the packaging film printing apparatus provided with a stopper to stop the one end portion of the sleeve to be fitted into the pipe on one side of the pipe outer circumference of the air shaft to determine the installation position of the sleeve on the air shaft. The method of claim 4, wherein
A pressure roller of a packaging film printing apparatus provided with a stopper to stop the one end portion of the first sleeve fitted into the pipe on one side of the pipe's outer circumferential surface of the air shaft so that the installation position of the first sleeve can be determined on the air shaft. The method of claim 1,
The sleeve is a pressure roller of the packaging film printing apparatus consisting of fiber reinforced plastic or carbon fiber reinforced plastic. The method of claim 3, wherein
The first sleeve and the second sleeve is a pressure roller of the packaging film printing apparatus consisting of a fiber reinforced plastic or carbon fiber reinforced plastic. The method according to claim 1 or 3,
Both sides of the screw groove portion, the pressing roller of the packaging film printing apparatus, characterized in that the fixing member is fastened to prevent the flow of the second roller is screwed to the screw groove portion. The method of claim 10,
The fixing member is a pressure roller of the packaging film printing apparatus, characterized in that the anti-rotation member is further provided on the inner surface facing the second roller.

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