JP2007144544A - Cutting device and method for resin belt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting device for a resin belt capable of cutting a resin tubular body without a cutter affected by the rotation deflection of the resin tubular body and a cutting method for the resin belt, when the obtained resin tubular body is cut to obtain the resin belt. <P>SOLUTION: For instance, cutting is performed by the cutter 20 while pressing a projecting amount adjusting member 22A on the outer peripheral surface of the resin tubular body 18 by a prescribed pressing force by an air cylinder 26 as a follow-up means. By making the cutter 20 follow up in accordance with the rotation deflection of the resin tubular body 18 in this way, the cutting can be performed in fixed states of a cutting portion of the cutter 20 and the resin tubular body 18. Distortion and cutting flaws, etc. of the cutting surface of the obtained resin belt can be prevented. As a result, the cutting can be performed without the cutter affected by the deflection when rotating the resin tubular body 18. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In the present invention, for example, after a film-forming resin solution is applied to a core body to form a film, the obtained resin tubular body (film) is extracted from the core body, and then the resin tubular body is cut to a predetermined width. The present invention relates to a resin belt cutting device for obtaining a resin belt and a method for producing a resin belt. The obtained resin belt is preferably used in an image forming apparatus using an electrophotographic system such as a copying machine or a printer.

  In an image forming apparatus, a belt made of a thin plastic film may be used in order to reduce the size / performance of a photosensitive member, a charging member, a transfer member, and a fixing member. In that case, if there is a seam in the belt, a trace of the seam is generated in the output image. Therefore, an endless belt without a seam is preferable. The material is preferably a polyimide resin or a polyamideimide resin in terms of strength, dimensional stability, heat resistance, and the like. (Appropriately, polyimide is abbreviated as PI and polyamideimide is abbreviated as PAI)

  In order to produce an endless belt with PI resin, there are known a centrifugal molding method in which a PI precursor solution is applied to the inner surface of a cylindrical body and dried while rotating, and an inner surface coating method in which the PI precursor solution is spread on the inner surface of the cylindrical body. However, in the method of forming a film on the inner surface, it is necessary to remove the film from the cylindrical body and replace it with another core body when the PI precursor is heated, which has a disadvantage that it takes man-hours.

  As another PI resin endless belt manufacturing method, there is a method in which a PI precursor solution is applied to the surface of the core body by a dip coating method, dried, heated and reacted, and then the PI resin film is peeled off from the core body. . This method has the advantage that the same core is used consistently from the coating film forming process by coating to the film forming process in which the reaction is carried out by heating, and the number of man-hours for replacement is unnecessary.

  However, the PI resin precursor solution has a very high viscosity at room temperature, and when it is applied onto the core by the dip coating method, the film thickness becomes too thick. Therefore, a method of controlling the film thickness by an annular body as disclosed in Patent Document 1 can be applied.

  When coating is performed using an annular body, the core body is coated with its longitudinal direction vertical, and the thickness of the coating film is regulated and made uniform by the gap between the core body and the circular hole of the annular body. .

  When the solution is applied by this method, a resin film is formed on the entire surface of the core. However, in this method, a portion having a non-uniform film thickness is formed at both ends of the resin film. Therefore, a method in which a film having a thickness larger than a desired width is formed in advance and unnecessary portions are cut later is employed.

  However, if a film is cut by cutting with a blade on the core, the surface of the core may be damaged by the contact of the blade. Therefore, after the resin film is extracted from the core body, as described in Patent Document 2, it is preferable that the resin film is fitted to a cutting holding member and cut. However, when the holding member is rotated, there is a problem that if the blade is shaken, the contact with the blade is not uniform and the cut surface of the resin belt is not smooth. The shaking of the holding member during rotation is caused by the poor cylindricality of the holding member and the shake of the rotating shaft.

JP 2002-91027 A JP-A-8-25283

  Therefore, the present invention provides a resin belt cutting device capable of cutting a resin tubular body rotational shake without affecting the blade when the obtained resin tubular body is cut to obtain a resin belt, And it aims at providing the cutting method of a resin belt.

The above problem is solved by the following means.
That is, the resin belt cutting device of the present invention is a resin belt cutting device for producing a resin belt by cutting a resin tubular body,
A rotating holder that rotates while holding the resin tubular body;
Holding the cutter is a cutting means, which has a defining member that defines the protruding amount of the cutter, and penetrates the cutter through the resin tubular body while bringing the defining member into contact with the surface of the rotating resin tubular body Cutting means for abutting and cutting like
Following means for following the cutter according to the rotational runout of the rotating resin tubular body,
It is characterized by having.

  The resin belt cutting device of the present invention allows the follower to follow the cutter according to the rotational runout of the resin tubular body, so that even if the rotational runout of the resin tubular body occurs, the amount of protrusion of the cutter defined by the regulating member While the minutes are always constant, the resin tubular body can be cut while penetrating (abutting). For this reason, it becomes possible to cut | disconnect, without a cutter being influenced with respect to the shake at the time of rotation of a resin tubular body.

  In the resin belt cutting device of the present invention, the following means may be means for causing the cutter to follow by pressing the defining member against the surface of the resin tubular body with a predetermined pressing force. As a result, even if the resin tubular body is shaken during rotation and an excessive pressing force is applied to the cutter or when the cutter is about to be separated, the specified member always comes into contact with the specified pressing force. While the amount of protrusion is always constant, the resin tubular body can be cut while penetrating (abutting). In addition, the predetermined pressing force of the defining member on the surface of the resin tubular body is set to be smaller than the pressing force applied to the defining member due to vibration during rotation of the resin tubular body.

On the other hand, the resin belt cutting method of the present invention is a resin belt cutting method for producing a resin belt by cutting a resin tubular body,
When the cutting member is butted and cut so as to penetrate the resin tubular body while the regulating member is in contact with the surface of the rotating resin tubular body while the regulating member defining the protruding amount of the cutter is in contact with the surface of the rotating resin tubular body, the rotating resin tubular It is characterized by following the cutter according to the rotational shake of the body.

  According to the resin belt cutting method of the present invention, as described in the resin belt cutting device of the present invention, it is possible to cut the vibration of the resin tubular body without being affected by the blade. Become.

  In the resin belt cutting method of the present invention, it is preferable to follow the cutter by pressing the defining member against the surface of the resin tubular body with a predetermined pressing force. As a result, even if the resin tubular body is shaken during rotation and an excessive pressing force is applied to the cutter or when the cutter is about to be separated, the specified member always comes into contact with the specified pressing force. While the amount of protrusion is always constant, the resin tubular body can be cut while penetrating (abutting).

  When the obtained resin tubular body is cut to obtain a resin belt. It is possible to provide a resin belt cutting device and a resin belt cutting method capable of cutting the resin tubular body without being affected by the blade during the rotation of the resin tubular body.

  Hereinafter, the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is provided to the member which has the substantially same function through all the drawings, and the overlapping description may be abbreviate | omitted.

  FIG. 1 is a top view showing a resin belt cutting device according to an embodiment. FIG. 2 is a side view showing the resin belt cutting device according to the embodiment.

  The resin belt cutting device 10 according to the present embodiment is configured such that a cylindrical rotation holding body 14 that holds a resin tubular body 18 and a cutting portion 16 are arranged on a base 12.

  The rotation holding body 14 is rotatably arranged on the base 12. A groove 14 </ b> A is provided along the circumferential direction at the cutting position of the resin tubular body 18 on the outer peripheral surface of the rotary holder 14. When the cutter 20 is abutted against and penetrates the resin tubular body 18, the cutting edge of the cutter 20 is provided. Enters the groove 14A, thereby preventing the rotating holder 14 from being scraped and the cutter 20 from being worn.

  The rotation holding body 14 may be configured to have an outer diameter that is smaller than the inner diameter of the resin tubular body 18 when the resin tubular body 18 is fitted, and larger than the inner diameter of the resin tubular body 18 when the resin tubular body 18 is cut. Good. As such a configuration, for example, a configuration in which the outer diameter is changed by dividing into a plurality of constituent members and adjusting the interval between the members is cited. In particular, when the rotation holding body 14 is composed of a plurality of constituent members, the central axis tends to shift and the rotational runout tends to increase. In the figure, H indicates the amount of rotational deflection of the resin tubular body 18 (rotary holder 14).

  The cutting unit 16 includes a cutter 20, a mounting base 22 to which the cutter 20 is attached, a linear motion part 24 that is arranged so that the cutter mounting base 22 can be moved with low frictional force, and an air cylinder 26 (following) connected to the mounting base 22. Means) and a fixing base 28 for supporting and fixing the linear motion portion 24.

  The mounting base 22 is provided with a protruding amount adjusting member 22A (regulating member) that adjusts and defines the protruding amount of the cutter 20, and the protruding amount adjusting member 22A comes into contact with the surface of the resin tubular body 18 so that the cutter 20 Is projected to the resin tubular body 18, that is, penetrates. Here, the protrusion amount is the length from the contact surface of the protrusion amount adjusting member that contacts the surface of the resin tubular body 18 to the cutting edge of the cutter 20, in other words, when the cutter 20 is abutted against the resin tubular body 18. The length from the surface (outer peripheral surface) of the resin tubular body 18 to the cutting edge of the cutter 20 is shown.

  The mounting base 22 is disposed on a rail 24A provided in the linear motion portion 24 so as to be movable in the cutter abutting direction (direction orthogonal to the axial direction of the resin tubular body 18). Here, the movable distance of the mounting base 22 can follow at least the amount of rotational deflection of the resin tubular body 18 (the length in the direction perpendicular to the resin tubular body axial direction), and the cutter 20 can be attached to and detached from the mounting base 22. The possible distance.

  The air cylinder 26 includes a cylindrical portion 26A, a movable wall 26B, a pressure chamber 26C surrounded by the inner wall of the cylindrical portion 26A and the movable wall 26B, and an air pipe 26D for injecting and exhausting air into the pressure chamber 26C. , Is composed of. A movable shaft 26E is connected to the movable wall 26B at one end. The other end of the movable shaft 26 </ b> E is connected to the mounting base 22. Reference numeral 26F denotes a pump.

  The air cylinder 26 injects air from the air pipe 26D to the pressure chamber 26C by the pump 26F, so that the pressure rises, and the movable shaft 26E can move in the axial direction with a predetermined pressing force via the movable wall 26B. ing. As a result, the mounting base 22 moves in a direction perpendicular to the axial direction of the resin tubular body 18, that is, the cutter 20 is abutted against the resin tubular body 18 and the projection amount adjusting member 22 </ b> A is pressed with a predetermined pressing force. The Rukoto. When the cutter 20 is separated from the resin tubular body 18 or when the cutter 20 is attached to or detached from the attachment base 22, the air in the pressure chamber 26 </ b> C may be removed and the attachment base 22 may be moved.

  In the present embodiment, the air cylinder 26 is not limited, and an elastic body such as a spring or rubber may be applied as the follower.

  In the cutting device 10 according to the present embodiment, first, the resin tubular body 18 is fitted into the rotation holding body 14. Then, with the cutter 20 attached to the mounting base 22, the air cylinder 26 moves the mounting base 22 at the standby position in the cutter abutting direction so that the cutter 20 abuts and penetrates the resin tubular body 18. The amount adjusting member 22A is pressed against the outer peripheral surface of the resin tubular body 18 with a predetermined pressing force. The pressing force of the protrusion amount adjusting member 22A to the outer peripheral surface of the resin tubular body 18 is, for example, 1.5 to 2.0N.

  Here, the adjustment of the protruding amount of the cutter 20 when the resin tubular body 18 is first cut is adjusted so that the cutter 20 can protrude to the surface of the resin tubular body 18 before cutting the resin tubular body. In this state, the cutting edge of the cutter 20 is brought into contact with the surface of the resin tubular body 18, the blade of the cutter 20 is strongly pressed to penetrate the resin tubular body 18, and then the protrusion amount is set so that the cutter 20 has a predetermined protrusion amount. Adjustment is performed by the adjusting member 22A. A preferable value of the protruding amount of the cutter 20 is a value that is 0.1 to 0.3 mm (preferably 0.1 to 0.2 mm) larger than the thickness of the resin tubular body 18 (resin belt). In addition, if the protrusion amount of the cutter 20 is adjusted first, it is unnecessary from the next time.

  Next, the rotary holding body 14 is rotated in a state where the cutting edge of the cutter 20 abuts and penetrates the resin tubular body 18. With this rotation, the resin tubular body 18 is cut by the cutter 20. The rotation speed of the rotary holder 14 at the time of cutting is, for example, 1 to 3 rpm (preferably 2 to 3 rpm).

  When the rotary holder 14 rotates one or more times, the air is extracted from the air cylinder 26, the mounting base 22 is returned to the standby position, the rotation of the rotary holder 14 is stopped, and the cutting operation is completed. In this way, a resin belt having a predetermined width can be obtained.

  In addition, although the form which attached one cutter 20 was demonstrated in this embodiment, for example, if two pieces are attached corresponding to the cutting width of the resin tubular body 18, both ends of the resin tubular body 18 are cut simultaneously. Can do.

  In the cutting apparatus according to the present embodiment described above, the protruding amount adjusting member 22A is pressed against the outer peripheral surface of the resin tubular body 18 by the air cylinder 26 with a predetermined pressing force, so that the resin tubular body 18 shakes during rotation. Even when an excessive pressing force is applied to the cutter 20 or when it is going to be separated, the specified member always comes into contact with the fixed pressing force, so that the protruding amount of the cutter 20 defined by the protruding amount adjusting member 22A is always constant. In this state, the resin tubular body can be cut while penetrating (abutting).

  Usually, the resin tubular body 18 has a rotational runout due to its poor cylindricity and the runout of the rotating shaft, and the amount of protrusion of the cutter 20 changes, and normal cutting cannot be performed.

  Therefore, in the cutting device according to the present embodiment, the cutter 20 follows according to the rotational deflection of the resin tubular body 18 as described above, so that the cutting portion of the cutter 20 and the resin tubular body 18 can be cut in a constant state. It is possible to prevent distortion of the cut surface of the resin belt to be obtained, cut flaws, and the like. Therefore, it becomes possible to cut without affecting the blade when the resin tubular body is rotated.

Hereinafter, a method for manufacturing a resin belt using the cutting device according to the present embodiment will be described.
The method for producing a resin belt is to apply a film-forming resin solution on a core body to form a coating film, heat the coating film to form a resin film, and then remove the resin film from the core body. One end or both ends of the resulting resin tubular body is cut by the cutting apparatus according to the present embodiment to obtain a resin belt (hereinafter sometimes referred to as an endless belt).

  The core used for coating is preferably a metal cylinder such as aluminum, stainless steel, nickel, or copper. The length of the core body needs to be equal to or longer than the target endless belt, and when a plurality of endless belts are manufactured at the same time, a length equal to or more than the number of the endless belts is required. Further, in order to secure a margin for the invalid area generated at the end, it is desirable that the length is about 10 to 40% longer than the target length. The outer diameter of the core body is matched with the diameter of the target endless belt, and the thickness is set to a thickness that can maintain the strength of the core body.

  It is preferable to attach a holding plate for holding the core body to both ends of the core body. The holding plate may be fixed with screws or welded to the core. If necessary, the holding plate may have a circular or fan-shaped ventilation hole, a hole through which a mandrel passes in the center, or a shaft. Moreover, you may attach the connection component for hanging or mounting.

  In order to prevent the formed film from adhering to the surface of the core, releasability is imparted to the surface of the core. For this purpose, there are methods of coating the surface of the core with a fluororesin or silicone resin, or applying a release agent to the surface.

  Depending on the type of film-forming resin, there are solvent volatiles during heating and gas generated during reaction, and the resin film after heating may partially swell due to the gas. This is particularly noticeable when the thickness of the PI resin film exceeds 50 μm.

  In order to prevent the swelling, the surface of the core body is preferably roughened to about Ra 0.2 to 2 μm as disclosed in JP-A-2002-160239. Examples of the roughening method include blasting, cutting, sandpaper peeling, and the like. Thereby, the gas generated from the PI resin can go out through a slight gap formed between the core body and the PI resin film, and does not swell.

  Since the surface of the core body is not only easily damaged, but also subjected to various treatments as described above, it must be avoided to contact the blade for cutting the film. In addition, before application | coating, it is preferable to affix an adhesive tape etc. to the both ends of a core, and to make it not apply | coat to an edge part.

  Various known materials can be used as the PI precursor or PAI resin as the film-forming resin. These solvents are aprotic polar solvents such as N-methylpyrrolidone, N, N-dimethylacetamide, and acetamide, and have low volatility at room temperature. In addition, although the density | concentration of a solution, a viscosity, etc. are selected suitably, the solid content concentration of the solution preferable for this coating method is 10-40 mass%, and a viscosity is 1-100 Pa.s.

  When the endless belt is used as a transfer belt or a contact charging belt, a conductive substance is dispersed in the resin solution as necessary. Examples of the conductive material include carbon materials such as carbon black, carbon fiber, carbon nanotube, and graphite, metals or alloys such as copper, silver, and aluminum, tin oxide, indium oxide, antimony oxide, and SnO2-In2O3 composite oxide. And the like, and the like.

Hereinafter, a method for applying the solution onto the core will be described.
In addition, "applying on a core" means apply | coating to the surface of the surface of a core body, and the surface of the layer, when it has a layer on this surface. Further, “rising the core” is a relative relationship with the liquid level during application, and includes the case of “stopping the core and lowering the coating liquid”.

  FIG. 3 is a schematic cross-sectional view showing the time of application of the annular coating apparatus. However, the figure shows only the main part, and the core holding mechanism and other devices are omitted.

  In FIG. 3, an annular sealing material 8 having a hole slightly smaller than the outer diameter of the core body is provided at the bottom of the annular coating tank 7. The core body 1 is inserted through the center of the annular sealing material 8 and the solution 2 is accommodated in the annular coating tank 7. Thereby, the solution 2 does not leak. In order to apply, as shown in FIG. 3, another core body 1 ′ is connected under the core body 1 and pushed up from the lower part of the annular coating tank 7 to form a coating film 4 on the surface of the core body 1. To do. The other core body 1 ′ may be an intermediate body (a core body having a short length) that does not produce a belt.

  An annular body 5 having a circular hole 6 larger than the outer diameter of the core body is installed on the solution 2. The material of the annular body 5 is selected from metals, plastics and the like that are not attacked by the solvent of the solution, and may have a hollow structure so as to easily float. In order to prevent sinking, legs and arms that support the annular body may be provided on the outer peripheral surface of the annular body or the coating tank.

  At the time of application, since the film thickness of the coating film 4 is determined by the gap between the outer diameter of the core 1 and the inner diameter of the circular hole 6, the inner diameter of the circular hole 6 is adjusted by a desired film thickness.

  In order to apply, the core body 1 is pulled up through the circular hole 6. The pulling speed is preferably about 0.1 to 1.5 m / min.

  When the core body 1 is pulled up, since the annular body 5 is installed in a floating state, it is lifted by the frictional resistance due to the viscosity of the solution so that the frictional resistance between the core body 1 and the annular body 5 is constant in the circumferential direction. That is, the annular body 5 moves so that the gap is uniform, and the coating film 4 having a uniform film thickness is formed on the core body. Thus, since a film thickness is controlled by an annular body, a highly viscous solution can be applied with a uniform film thickness.

  After coating, the core body 1 is put into a heat drying apparatus to dry the solvent. When the coating film drips during drying, the core body is leveled and dried while rotating. The rotation speed is preferably about 1 to 60 rpm. The heating conditions are preferably 90 to 170 ° C. and 20 to 60 minutes. At that time, the higher the temperature, the shorter the heating time, and the temperature may be raised stepwise or at a constant rate. When the solution is a PAI resin solution, a film can be obtained only by drying the solvent.

  When the solution is a PI precursor solution, if the solvent is removed too much from the coating film, the film does not yet retain strength, and thus cracks are likely to occur. Therefore, it is preferable to leave the solvent to some extent (15 to 45% by mass in the PI precursor film).

  When the adhesive tape is affixed to the end of the core after drying, the entire film is removed. The removal of the end coat can prevent the end of the coat from adhering to the end of the core body, and can easily form a gap between the core body and the coat. The presence of the gap makes it easier for the gas generated from the film to escape to the outside, so that swelling of the film can be reduced.

  Thereafter, a PI resin is formed by heating the PI precursor film at 250 to 450 ° C., preferably around 300 to 350 ° C., for 20 to 60 minutes to cause a condensation reaction. At that time, the temperature may be increased stepwise. In this step, since the film is fixed, the core body may be oriented in any direction, and may not be rotated during heating. The film thickness of the endless belt is preferably about 30 to 150 μm.

  After cooling, an endless belt can be obtained by removing the formed film from the core. In that case, it is preferable to inject pressurized air into the gap between the core and the coating film by an air gun or the like.

  After the film is extracted from the core body, one end or both ends of the resin tubular body made of the obtained film are cut by the cutting apparatus according to the present embodiment.

  And after completion | finish of a cutting | disconnection, a drilling process, a rib attachment process, etc. may be given. In this way, a resin belt (endless belt) is obtained.

(Test example)
Test examples are shown below.
Carbon black (trade name: Special Black 4, Degussa Huls) mixed with PI precursor solution (trade name: U Varnish A, manufactured by Ube Industries, concentration 18%) at a solid content mass ratio of 23%, then facing collision Dispersed with a mold disperser. Furthermore, a silicone leveling agent (trade name: DC3PA, manufactured by Dow Corning Tore Silicone) was added so that the concentration became 500 ppm to prepare a coating solution.

  Separately, an aluminum cylinder having an outer diameter of 366 mm, a wall thickness of 10 mm, and a length of 450 mm was prepared, and the surface was roughened to Ra 1.0 μm by blasting with spherical alumina particles. The circularity of the cylinder was 20 μm or less. In addition, a holding plate having a thickness of 15 mm, an outer diameter that fits into the cylinder, four 100 mm diameter vent holes, and a 20 mm diameter hole in the center is made of the same aluminum material, and fitted into the cylinder. Welded by TIG welding.

  A silicone release agent (trade name: Sepacoat, manufactured by Shin-Etsu Chemical Co., Ltd.) was applied to the surface of the cylinder. A polyester adhesive tape having a width of 10 mm was wound around the end of the core. This is to prevent the coating film from wrapping around the side surface of the core.

  Next, a PI precursor coating film is formed by using the coating liquid and by an annular coating apparatus shown in FIG. As an annular body, an aluminum body having an outer diameter of 420 mm, an inner diameter of 367.1 mm at the smallest part of the circular hole, and a height of 50 mm was produced. The inner wall was linearly inclined, and the inclination angle with respect to the vertical line was 7 °. The upper end was formed with a 2 mm portion parallel to the core.

  On the other hand, a hole with an inner diameter of 386 mm was made in the bottom surface of an annular coating tank having an inner diameter of 450 mm and a height of 100 mm. An annular sealing material made of hard polyethylene resin having a thickness of 0.5 mm and having a hole with an inner diameter of 364.5 mm was attached to the back surface of the bottom surface, and the core body 1 was passed through the center. The PI precursor solution was placed in an annular coating tank, and an annular body was placed. Next, another core body was placed under the core body, and the coating was performed by pushing up at 0.8 m / min. At that time, the annular body was lifted by about 20 mm. Thereby, a PI precursor coating film having a wet film thickness of about 500 μm was formed on the core.

  A 20 mmφ stainless steel shaft is passed through the center hole of the holding plate of the core body, placed on a turntable, leveled, and heated at 80 ° C. for 20 minutes and at 130 ° C. for 30 minutes while rotating at 6 rpm, PI precursor The coating film was dried. As a result, a PI precursor film having a thickness of about 150 μm was obtained. At this time, the adhesive tape at the end of the core was removed.

  Next, the core is made vertical, the shaft is removed and placed on a table, and then placed in a heating device and reacted at 200 ° C. for 30 minutes and 340 ° C. for 30 minutes to form a PI resin film having a length of 430 mm and an average film thickness of 80 μm. did.

  After cooling to room temperature, the film was extracted between the core and the film while blowing air from an air gun at a pressure of 0.5 MPa.

  The resin tubular body made of the extracted film was cut by the cutting device shown in FIGS. The rotary holding body is divided into two members having a semicircular cross section. When the resin tubular body is fitted, the outer diameter is reduced to about 360 mm, and after the film is fitted, the outer diameter is about 366 mm. The diameter of the film was expanded to tightly hold the film.

  When the rotating holder was rotated, a vibration of 0.1 to 1.0 mm was generated. This is due to the shape in which the rotation holding body is divided into two.

  On the other hand, Table 1 shows the result of an experiment in which the pressing force of the protruding amount adjusting member (regulating member) of the cutter to the outer peripheral surface of the resin tubular body is changed by the air cylinder to observe the cut surface. Other experimental conditions and evaluation criteria are as follows.

-Experimental conditions-
Experimental conditions are shown below.
・ Rotating speed of rotating holder: 3.0 rpm
・ Movement speed of cutter (projection amount adjusting member): 3.0mm / S
・ Projection amount of cutter 280μm

-Evaluation criteria-
“◯” indicates an observation result indicating that cutting can be performed completely, and “×” indicates that the blade has a poor penetration and a portion that cannot be cut.

  As a result, in the range where the pressing force of the cutter protruding amount adjusting member (regulating member) is weak, the cutter cannot follow the rotational runout of the rotating holder, resulting in cutting failure. In the strong range, the cutting start and cutting end match. Although there was no level difference, good cutting was possible within a certain range.

  As described above, when the resin belt cutting device according to the present embodiment is used for cutting, the cutter is affected by the rotational shaking of the rotary holding body. It can be seen that cutting can be performed while keeping the incision amount from the body surface constant.

It is a top view which shows the cutting device of the resin belt which concerns on embodiment. It is a side view which shows the cutting device of the resin belt which concerns on embodiment. It is a schematic sectional drawing which shows the time of application | coating of an annular coating device.

Explanation of symbols

1, 1 'core body 2 solution 4 coating film 5 annular body 6 circular hole 7 annular coating tank 8 annular sealing material 10 cutting device 12 base 14 rotating holder 14A groove 16 cutting part 18 tubular resin body 20 cutter 22 mounting base 22A Quantity adjustment member 24 Linear motion part 24A Rail 26 Air cylinder 26A Cylindrical part 26B Movable wall 26C Pressure chamber 26D Air pipe 26E Movable shaft 26F Pump 28 Fixed base

Claims (4)

A resin belt cutting device for producing a resin belt by cutting a resin tubular body,
A rotating holder that rotates while holding the resin tubular body;
A cutting means for holding the cutter, which has a defining member that defines an amount of protrusion of the cutter, and penetrates the cutter through the resin tubular body while bringing the defining member into contact with the surface of the rotating resin tubular body Cutting means for abutting and cutting like
Following means for following the cutter according to the rotational runout of the rotating resin tubular body,
A resin belt cutting device comprising:   2. The resin belt cutting device according to claim 1, wherein the following unit is a unit that presses the defining member against a surface of the resin tubular body with a predetermined pressing force to follow the cutter. A resin belt cutting method for producing a resin belt by cutting a resin tubular body,
When the cutting member is butted and cut so as to penetrate the resin tubular body while the regulating member is in contact with the surface of the rotating resin tubular body while the regulating member defining the protruding amount of the cutter is in contact with the surface of the rotating resin tubular body, the rotating resin tubular A method for cutting a resin belt, characterized by causing the cutter to follow in accordance with a rotational shake of a body.   4. The method of cutting a resin belt according to claim 3, wherein the regulating member is pressed against the surface of the resin tubular body with a predetermined pressing force to cause the cutter to follow.

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