KR20100047102A - Pipe body for printing roll - Google Patents

Pipe body for printing roll Download PDF

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Publication number
KR20100047102A
KR20100047102A KR1020080131026A KR20080131026A KR20100047102A KR 20100047102 A KR20100047102 A KR 20100047102A KR 1020080131026 A KR1020080131026 A KR 1020080131026A KR 20080131026 A KR20080131026 A KR 20080131026A KR 20100047102 A KR20100047102 A KR 20100047102A
Authority
KR
South Korea
Prior art keywords
spiral
groove
tube
circumferential surface
roll
Prior art date
Application number
KR1020080131026A
Other languages
Korean (ko)
Inventor
최건식
Original Assignee
최건식
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 최건식 filed Critical 최건식
Publication of KR20100047102A publication Critical patent/KR20100047102A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J21/00—Column, tabular or like printing arrangements; Means for centralising short lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J21/00—Column, tabular or like printing arrangements; Means for centralising short lines
    • B41J21/17—Column, tabular or like printing arrangements; Means for centralising short lines controlled by stored information

Abstract

PURPOSE: A pipe body for a printing roll is provided to maximize heating surface area of the pipe body by forming a concave groove on the inner circumference corresponding to a concave groove. CONSTITUTION: A pipe body(70) for a printing roll comprises a spiral groove(72). The spiral groove is formed on the inner circumference of the pipe to be expanded in the spiral direction. The spiral grooves are formed on the inner circumference of the pipe at regular intervals. A reverse spiral groove is formed on the inner circumference of the pipe to cross the spiral groove.

Description

Pipe body for printing roll

The present invention relates to a tubular roll for printing, and more particularly, to form spiral grooves of various shapes continuous in the longitudinal direction on the inner circumferential surface of the tubular roll for printing, while having a predetermined spiral angle along the longitudinal direction on the outer circumferential surface and spaced apart from each other. Work to increase the heat transfer area while maximizing the heat transfer area of the tube itself by densely forming continuous concave grooves in the closed state and convex protrusions on the inner circumferential surface corresponding to the recess grooves. It also relates to a tubular roll for printing roll made to be simple and easy to improve the overall work efficiency.

In general, an image forming apparatus refers to an apparatus for printing an image corresponding to input original image data onto a recording medium such as printing paper.

Examples of such an image forming apparatus include a printer, a copier, a facsimile, and the like. In the image forming apparatus, an electrophotographic method is an image such as a laser beam printer, an LED print head (LPH) printer, and a facsimile. It is adopted in the forming apparatus.

An image forming apparatus employing an electrophotographic method has a charging process of charging a photosensitive drum by a charging roller to form a uniform charge on the photosensitive drum, and a laser scanning unit (LSU) on the charged photosensitive drum. An exposure process of forming an electrostatic latent image by scanning light through a light source, a developing process of developing an electrostatic latent image formed on the surface of the photosensitive drum with a developer, and a visible image formed on the photosensitive drum through a transfer roller. The printing operation is carried out through a transfer process of transferring the recording paper and a fixing process of fusing the developer transferred to the recording paper with a predetermined heat and pressure to fuse it onto the recording paper.

In this fixing process, a two-roll fixing method using a pressurizing roller and a heat-roller, a roller-pressure fixing roller, and a fixing roller A three-roll fixing method in which a sub-roller (Pace Pressure-Roller) is used is generally applied, and the use and quantity of rollers (hereinafter referred to as printing rolls) can be variously changed according to the intention of the designer.

On the other hand, in the prior art, as part of increasing the heat transfer area of the printing roll, a method such as adhering a separate rib to the inner circumferential surface of the tube for printing roll or pressurizing the outer circumferential surface to form projections on the inner circumferential surface thereof. Was used to increase the heat transfer area of the printing roll.

Referring to Figures 1 to 4 attached to the printing roll tube processing method to press the outer peripheral surface of the printing roll tube as an example to form a projection on its inner peripheral surface as follows.

First, a plurality of grooves 12 are formed on the outer circumferential surface of the tubular body 10 by using a pressure roller on the outer circumferential surface of the tubular body 10 for printing rolls, and consequently, the projections 14 are formed on the inner circumferential surface of the tubular body 10. Is formed, and a step of compression molding both ends of the tubular body 10 to a small diameter by using the swaging roller 50, and the outer peripheral surface of the tubular body 10 to a predetermined thickness to smooth the surface of the tubular body Through the process of forming, the appearance of the printing roll is primarily completed.

 After finishing (cutting) and smoothing the outer surface, and then performing post-processing such as the remaining (U) cutting, heat-resistant coating (light energy-> absorption-) for the purpose of increasing the surface area and reducing the heat reflection rate and increasing the heat absorption rate. > Thermal energy) and, if necessary, after the pretreatment process such as sandblaster (improved adhesion strength), the coating is completed with a material such as Teflon, and finally the printing roll is completed.

Reference numeral 20 denotes a collet for rotating the tubular body 10 for the swaging process, 30 denotes an anti-vibration roller for preventing vibration from occurring during rotation of the tubular body 10, and 40 denotes a pressure roller. 50 represents a swaging roller, and 60 represents a finishing machine.

On the other hand, swaging, which is an example of a processing method, is a type of forging that compresses and forms a metal material, and uses a tool or a mold to cut a material cut from a metal plate having a thickness almost equal to the thickest part of the product. It refers to the operation of crushing a part of the material to move the material in the shape of a sculpted shape. It is usually divided into rotary swaging and radial forging, which rotates a round stick or cylindrical tubular material around an axis. It refers to the process of extending the length by squeezing the material by using a tool and squeezing it in the direction perpendicular to the axis or by reducing the diameter.

However, the printing roll pipe of the prior art has to form a concave groove on the outer circumferential surface of the tube so that protrusions are formed on the inner circumferential surface, and then go through the process of finishing the outer circumferential surface on which the concave groove is formed. The process is very complicated and difficult to increase the labor and manufacturing costs, and also has a simple ring-shaped projection structure has a problem in that the heat transfer area is limited to increase the heat efficiency so as not to maximize the thermal efficiency.

The present invention has been made to solve such a problem, while forming spiral grooves of various shapes continuous in the longitudinal direction on the inner circumferential surface of the tubular roll for printing, while having a predetermined spiral angle along the longitudinal direction on the outer circumferential surface and spaced apart from each other By forming densely continuous concave grooves in a state and convex projections are formed on the inner circumferential surface corresponding to the concave grooves, the heat transfer area of the pipe itself can be maximized and the work for increasing the heat transfer area is also performed. The purpose of the present invention is to provide a tube for printing rolls that is simple and easy to improve overall work efficiency.

The printing roll tube of the present invention for achieving the above object is characterized in that, in the printing roll tube having an empty inside and both cross-sections thereof, a spiral groove extending in a spiral direction on the inner circumferential surface of the tube.

In addition, in the tubular roll for printing according to the present invention, it is preferable that a plurality of spiral grooves are formed at equal intervals over the entire circumference of the inner circumferential surface of the tubular body.

Further, in the tubular roll for printing according to the present invention, it is preferable that the helix groove has a helix angle such that its length passes one week with respect to the entire length of the tubular body.

In addition, in the tubular roll for printing according to the present invention, it is preferable that the helix groove has a helix angle such that the length of the spiral groove is 1/2 of the entire length of the tubular body.

In addition, in the tubular body for printing roll according to the present invention, it is preferable that an inverse spiral groove intersecting the spiral grooves is further provided on the inner circumferential surface of the tubular body.

Further, in the tubular roll for printing according to the present invention, it is preferable that the spiral grooves and the reverse spiral grooves cross different groove depths from each other.

Further, in the printing roll tube according to the present invention, a plurality of concave grooves are formed on the outer circumferential surface of the tube, and a plurality of convex protrusions are formed on the inner circumferential surface corresponding to the concave groove.

In addition, in the tubular roll for printing according to the present invention, it is preferable that the concave groove is continuously formed in a spiral shape with a predetermined spiral angle along the longitudinal direction of the outer circumferential surface of the tubular body and spaced apart from each other at regular intervals.

In addition, in the printing roll tube according to the present invention, it is preferable that an inverted concave groove intersecting the concave grooves is further provided on the outer circumferential surface of the tube.

In addition, in the tubular roll for printing according to the present invention, it is preferable that the concave groove of the tubular body and the convex protrusion corresponding thereto are formed in a hexahedral shape with one side open.

In addition, in the tubular roll for printing according to the present invention, it is preferable that the concave groove and the convex protrusion corresponding to the tubular body are each formed in a hemispherical shape with one side open.

As described above, the printing roll tube of the present invention forms spiral grooves of various shapes that are continuous in the longitudinal direction on the inner circumferential surface thereof and has a predetermined spiral angle along the longitudinal direction on the outer circumferential surface and is spaced apart from each other at regular intervals. By forming densely concave grooves of spiral shape, convex protrusions are formed on the inner circumferential surface corresponding to the concave grooves, thereby maximizing the heat transfer area of the tubular body and at the same time, it is easy and easy to increase the heat transfer area. The overall effect is to improve work efficiency.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

As shown in Figures 5 and 6, the printing roll tube according to the first embodiment of the present invention is a spiral groove 72 extending in a spiral direction on the inner circumferential surface of the printing roll tube 70, which is empty inside and both ends are penetrated. ) Is formed.

Here, the spiral grooves 72 are formed in plural at equal intervals over the entire circumference of the inner circumferential surface of the tubular body 70, and the spiral grooves 72 have a length of 1 with respect to the entire length of the tubular body 70. Have a helix angle that allows the week to elapse.

In this case, the spiral groove 72 has a length of 1 week for the entire length of the tubular body 70, that is, a spiral groove having a predetermined angle turns around the inner circumferential surface of the tubular body 70, that is, 1 week has passed. It is most preferable to make the length required to be the same as the entire length of the tube, but in addition, the length of the spiral groove may have various spiral angles, such that 1/2 week may pass over the entire length of the tube. .

On the other hand, as a second embodiment of the present invention, as shown in Fig. 7 and 8, the inner circumferential surface of the tubular body 70 may further include an inverse spiral groove 74 that intersects the spiral grooves 72. There will be.

Here, the spiral groove 72 and the reverse spiral groove 74 is preferably such that the groove depths cross each other.

Looking at the manufacturing method of the tubular roll for printing according to an embodiment of the present invention according to such a configuration, first to form a spiral groove on the inner peripheral surface of the tubular body (70).

Here, the method for forming the spiral groove 72 on the inner circumferential surface of the tubular body 70 can explore a variety of existing processing methods, in the present invention, as shown in Figure 9, the axial direction of the tubular body 70 on the outer circumferential surface A plurality of groove-forming blades 82a having a comb-tooth-shaped spiral angle twisted with respect to a predetermined angle are formed, and one end of the rod 84 has a conical groove-forming member 82 whose diameter is slightly larger than the inner diameter of the tube. The spiral groove former 80 is coupled to the unit, and the bar 84 of the spiral groove former 80 is penetrated into the inner circumference of the tubular body 70 and pulled out by force to be penetrated into the inner circumferential surface of the tubular body 70. In this case, the inertial action generated while the groove forming member 82 is in contact with the inner peripheral surface of the tubular body 70 and the groove-forming blade 82a having a comb-shaped helix angle while passing through the inner peripheral surface of the tubular body 70 The groove forming member 82 is rotated by itself and at the same time It is possible to use a predetermined method for forming the spiral groove 72 while the edge 82a penetrates the inner circumferential surface of the tubular body 70.

After forming the spiral groove 72 on the inner circumferential surface of the tubular body 70, the surface area after completing the swaging process and the remaining post-process (U-CUT) to make both ends of the tubular body 70 in a small diameter structure, Heat-resistant coating (light energy-> absorption-> heat energy) or sandblaster (adhesive strength enhancement) to increase heat absorption and increase heat absorption, and then Teflon, etc. Finishing the coating with the material of the finished tube for the printing roll is finally completed.

And, as shown in Figure 10 to 12, the printing roll tube 70 according to the third embodiment of the present invention is formed in the inner circumferential surface of the spiral grooves 72 or inversely intersected with the spiral grooves 72 In the printing roll tube further provided with a spiral groove (74), a plurality of concave grooves (75) are formed on the outer circumferential surface of the tube (70) and a plurality of convex protrusions (75a) on the inner circumferential surface corresponding to the concave groove (75). ) Is formed.

Here, the concave groove 75 has a predetermined spiral angle along the longitudinal direction of the outer circumferential surface of the tubular body 70 and is densely formed in a spiral shape continuously in a state spaced apart from each other.

On the other hand, as a fourth embodiment of the present invention, as shown in Figure 13, the outer concave surface of the tubular 70 may be further formed with a recess concave groove (77) intersecting the concave groove (75).

In addition, the concave groove 75 and the convex protrusion 75a corresponding to the tubular body 70 are each formed in a hexahedral shape with one side open, or as a fifth embodiment of the present invention, as shown in FIG. As such, the concave grooves 76 and the convex protrusions 76a corresponding to the concave grooves 76 of the tubular body 70 may be formed in a hemispherical shape with one side open.

Looking at the manufacturing method of the tubular roll for printing according to another embodiment of the present invention according to this configuration, first to form a concave groove 75 on the outer peripheral surface of the tubular body (70).

Here, the method of forming the concave groove 75 on the outer circumferential surface of the tubular body 70 can explore a variety of existing processing methods, in the present invention, as shown in Figure 15, by using a predetermined chuck structure tube ( The plurality of groove forming members 92 are engaged with the entire outer circumferential surface of the 70, but the groove forming blades 92a have a spiral angle twisted at a predetermined angle with respect to the axial direction of the tube 70. When the shaft is rotated, the groove forming member 92 is pushed in the longitudinal direction by the inertial action generated when the groove forming blade 92a and the outer circumferential surface of the tube 70 come into contact with each other, and as a result, a predetermined interval is formed on the outer circumferential surface of the tube 70. It is possible to apply a predetermined device capable of forming a plurality of concave grooves 75 continuous in a spiral shape.

After the concave groove 75 is formed on the outer circumferential surface of the tubular body 70, the outer circumferential surface of the tubular body 70 is finished to a predetermined thickness to smooth the surface of the tubular body 70. After completing the swaging process and the remaining post-process (U-CUT) to make both ends of small diameter structure, heat-resistant coating (light energy-> absorption-> heat energy) to increase surface area and reduce heat reflectance and increase heat absorption If necessary, a process such as sandblaster (adhesive strength improvement) is performed, and then the coating is completed with a material such as Teflon to finally complete the roll for printing. As described above, the present invention The heat transfer area of the printing roll tube according to the present invention is not limited to the above embodiments, and is usually used in the field of the present invention without departing from the gist of the present invention as claimed in the following claims. Those with the knowledge that there is a technical spirit of anyone to the extent that can be implemented in various modifications.

1 to 4 is a schematic cross-sectional view sequentially showing a process for producing a printing roll tube according to the prior art.

5 is a perspective view showing a tube for a printing roll according to a first embodiment of the present invention.

6 is an internal cross-sectional view showing a tube for a printing roll according to a first embodiment of the present invention.

7 is a perspective view showing a tube for a printing roll according to a second embodiment of the present invention.

8 is an internal cross-sectional view showing a tube for a printing roll according to a second embodiment of the present invention.

9 is a perspective view showing an example of a spiral groove forming machine for forming the spiral groove of the tubular roll for printing of the present invention.

10 is a perspective view showing a tube for a printing roll according to a third embodiment of the present invention.

11 is a schematic cross-sectional view showing a tube for a printing roll according to a third embodiment of the present invention.

12 is an external view showing a spiral concave groove structure of a printing roll tube according to a third embodiment of the present invention.

FIG. 13 is an external view showing a cross-helical concave groove structure of a printing roll tube according to a fourth embodiment of the present invention. FIG.

14 is a schematic cross-sectional view showing a tube for a printing roll according to a fifth embodiment of the present invention.

Fig. 15 is a perspective view of the main portion of the concave groove forming apparatus for forming the concave groove of the tubular body for printing roll of the present invention.

** Description of the symbols for the main parts of the drawings **

10: tube 12: groove

14: protrusion 20: rollet

30: anti-vibration roller 40: pressure roller

50: swaging roller 60: finishing machine

70: tube 72: spiral groove

74: reverse spiral groove 75, 76: concave groove

75a, 76a: convex protrusion 77: inverted recess

80: spiral groove forming machine 82: groove forming member

82a: groove forming edge 84: bar

92 groove forming member 92a groove forming blade

Claims (11)

In the tube for the printing roll, the inside of which is empty and both sides penetrate, Pipe roll for printing roll, characterized in that the spiral groove 72 is formed extending in the spiral direction on the inner peripheral surface of the tube (70). The method of claim 1, The spiral groove 72 is a printing roll pipe, characterized in that a plurality is formed at equal intervals over the entire circumference of the inner circumferential surface of the pipe (70). The method of claim 2, The spiral groove 72 is a tubular roll for printing, characterized in that the length of the spiral has a spiral angle so that one week passes with respect to the entire length of the tube (70). The method of claim 2, The spiral groove 72 is a tubular roll for printing, characterized in that the length of the spiral has a spiral angle so that a half week passes with respect to the entire length of the tube (70). The method according to claim 3 or 4, Pipe roll for printing roll, characterized in that the inner circumferential surface of the tube 70 is further provided with a reverse spiral groove (74) intersecting the spiral groove (72). The method of claim 5, The spiral groove 72 and the reverse spiral groove 74 is a printing roll pipe, characterized in that the groove depth cross each other differently. The method of claim 1, A plurality of concave grooves 75 and 76 are formed on the outer circumferential surface of the tubular body 17, and a plurality of convex protrusions 75a and 76a are formed on the inner circumferential surface corresponding to the concave grooves 75 and 76. Tube. The method of claim 7, wherein The concave groove (75, 76) has a predetermined spiral angle along the longitudinal direction of the outer circumferential surface of the tube (70), the printing roll pipe body, characterized in that formed continuously in a spiral shape spaced apart from each other. The method of claim 8, Tube for printing roll, characterized in that the outer circumferential surface of the tube 70 is further provided with a recess concave groove (77) intersecting the concave groove (75). The method of claim 7, wherein The concave groove 75 and the convex protrusions 75a corresponding to the concave grooves 75 of the tubular body 70 are formed in a hexahedron shape, one side of which is opened, the tubular body for a printing roll. The method of claim 7, wherein The concave groove 76 and the convex protrusions 76a corresponding to the concave grooves 76 of the tubular body 70 are formed in a hemispherical shape with one side open, respectively.
KR1020080131026A 2008-10-28 2008-12-22 Pipe body for printing roll KR20100047102A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080105695 2008-10-28
KR20080105695 2008-10-28

Publications (1)

Publication Number Publication Date
KR20100047102A true KR20100047102A (en) 2010-05-07

Family

ID=42274267

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020080131026A KR20100047102A (en) 2008-10-28 2008-12-22 Pipe body for printing roll

Country Status (1)

Country Link
KR (1) KR20100047102A (en)

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