JP2016020020A - Cutting device, image formation device, and repairing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting device which is equipped with a cutting blade for cutting a sheet and a receiving stage capable of abutting with the cutting blade, for cutting the sheet by pinching it between the cutting blade and the receiving stage, for suppressing a running cost of the receiving stage, and to provide an image formation device equipped with the cutting device.SOLUTION: A repairing device 9 is incorporated which repairs a recessed part formed at a receiving stage 20 by a cutting blade 10. The repairing device 9 includes a coating means 40 which applies a curing agent to the recessed part formed at the receiving stage 20 by relative movement to the receiving stage 20, a flattening means 41 for flattening the curing agent applied on the receiving stage 20, and a curing means 42 for curing the curing agent that is applied on the receiving stage 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cutting apparatus, an image forming apparatus, and a repair apparatus having a cradle repairing section that repairs a cradle when cutting a sheet of copy paper or the like carried out from an image forming apparatus such as a printer, a copying machine, or a facsimile machine. About.

  Conventionally, there are two methods for cutting a sheet: a push-cut method in which a cutting blade is abutted against a pedestal for cutting, and a guillotine method in which two blades are pressed against each other and the sheet is cut by shearing. The cradle used in the push-off method is usually a material such as rubber, urethane, or mold. The cutting blade is a metal material, and the cradle wears with cutting due to the material hardness. Patent Document 1 discloses a method for improving the durability of the cradle by rotating the cradle worn by the cutting blade and shifting the contact position with the cutting blade.

JP 2004-114198 A

  However, in the method described in Patent Document 1, the durability is increased by shifting the position of the cradle before the cradle is worn by the cutting blade. There was a problem that it had to be replaced with a new one and it took a running cost.

  Therefore, an object of the present invention is to provide a cutting device, an image forming device, and a repair device that can reduce running costs.

  Therefore, the cutting device of the present invention includes a cutting blade that cuts a sheet, and a cradle that can come into contact with the cutting blade, and the cutting device that cuts the sheet between the cutting blade and the cradle. In the invention, the concave portion formed in the cradle by the cutting blade is provided with application means for applying a curing material by moving relative to the cradle.

  According to the cutting device of the present invention, running cost can be reduced.

(A), (b) is the figure which showed the sheet | seat cutting device at the time of repair of a receiving stand. It is a side view which shows the structure of the sheet cutting device which cut | disconnects a sheet | seat. It is the perspective view which showed the cutting part of the sheet cutting device at the time of sheet cutting. It is a perspective view at the time of the recessed part generation | occurrence | production of a receiving stand. (A) is a flowchart of repair, (b)-(d) is the front view which showed the structure of the repair part. It is a side view of the cradle after repair of a recessed part. It is the perspective view which showed the cutting part of the sheet cutting device at the time of sheet cutting. It is the perspective view which showed the cradle used for multiple times of cutting | disconnection. It is the figure which showed the repair operation | movement with respect to the cradle of FIG. (A), (b) is a front view of the whole sheet | seat cutting device. It is the perspective view which showed the cutting part of the sheet cutting device at the time of sheet cutting. It is the perspective view which showed the cradle used for multiple times of cutting | disconnection. It is the figure which showed the repair operation | movement with respect to the cradle of FIG. (A), (b) is a front view of the whole sheet | seat cutting device.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
Fig.1 (a) is a front view of the whole sheet | seat cutting device 7 in this invention. The sheet cutting device 7 is roughly divided into a cutting unit 8 and a repair unit 9. The cutting unit 8 of the sheet cutting device 7 includes a cutting blade 10 having a lowering mechanism for cutting, a cradle 20 that can come into contact with the lowered cutting blade 10, and a sheet suction stage 31 that sucks and fixes the sheet 100 to be cut. And. Further, the repair unit 9 of the sheet cutting device 7 includes a dispenser 40 for repairing the cradle 20, and the discharge pressure and discharge time of the dispenser 40 can be changed by the control BOX. The repair unit 9 also includes a squeegee 41 for flattening the liquid level (curing material) of the liquid discharged to the cradle 20 by the dispenser 40, a UV irradiator 42 for curing the discharged liquid, and a UV irradiator 42. A control BOX for changing irradiation ON / OFF, irradiation time, and illuminance is provided.

  FIG. 1B is a view showing the sheet cutting device 7 when the cradle 20 is repaired. After cutting the sheet 100, the sheet cutting device 7 moves the cutting unit 8 to the position of the repair unit 9. The sheet cutting device 7 recognizes that the cradle 20 has reached the repair position by this movement, based on the encoder value of the ROBO Cylinder attached to the cradle 20. When the cradle 20 comes to the repair position, the dispenser 40 and the squeegee 41 operate to move to the repair position of the cradle 20. The repair position of the cradle 20 is an optimum distance for the UV irradiator 42 to irradiate the cradle 20. When the movement of the dispenser 40 and the squeegee 41 is completed, the repair process is started.

  FIG. 2 is a side view showing the configuration of the sheet cutting device 7 for cutting a sheet such as a copy sheet carried out from the image forming apparatus. The detailed movement of each component in the repair process will be described. The air cylinder 11 is configured so that the cutting blade 10 can be raised and lowered. The cradle 20 is configured to be rotatable at a constant speed by a small electric motor (hereinafter also simply referred to as a motor) 21. The cutting method of the sheet 100 of the present embodiment is a push cutting method in which the cutting blade 10 cuts the sheet 100 with a certain load. The sheet 100 is cut on the cradle 20. The cutting blade 10 is a general commercially available cutter, and the material is carbon steel having hardness and wear resistance. The material of the cradle 20 is made of rolled steel having impact resistance. This is to prevent the cutting blade 10 from being worn, and the cradle 20 has a softer relationship than the cutting blade 10. Note that the material of the cradle 20 is not limited to rolled steel, and may be rubber, a mold, or other materials as long as the hardness is related to the above.

  In order to cut the sheet 100, the sheet 100 stored in a tray (not shown) is first taken out and conveyed onto the sheet suction stage 31. For this operation, the operator may install the sheet 100 on the suction stage 31 by hand. Thereafter, the cutting blade 10 is driven by the ROBO Cylinder from one end to the other end of the sheet 100 in a state where a constant load is applied to the cradle 20 (the load at this time may be sufficient force to cut the paper). Then, the sheet 100 is cut by moving.

  FIG. 3 is a perspective view showing the cutting unit 8 of the sheet cutting device 7 during sheet cutting. The cutting of the sheet is performed by moving in the direction of the arrow α while maintaining the state where the cutting blade 10 is abutted against the receiving table 20 with a constant load, and the sheet 100 is inserted between the cutting blade 10 and the receiving table 20 and cut. To do.

  FIG. 4 is a perspective view when the recess S of the cradle is generated. The process of repairing the recess S of the cradle will be described. The concave portion S is a concave portion generated when the cradle 20 is worn due to contact with the cutting blade 10. Since the cutting blade 10 has a material hardness higher than that of the cradle 20, when the sheet cutting process is performed, a concave portion S is generated on the circumference of the receiving surface of the cradle 20 with which the cutting blade 10 contacts. Here, although the repair process of the recessed part S is described, this necessarily occurs due to the material relationship between the cutting blade 10 and the cradle 20, and the recessed part S may be provided in the cradle 20 from the beginning.

  FIG. 5A is a flowchart for repairing the recess S, FIG. 5B is a view when the cradle recess S is applied, and FIGS. 5C and 5D are cradle recesses. It is the front view which showed the structure of S repair part. For repairing the recess S, a dispenser 40, a squeegee 41, and a UV irradiator 42 are used. In this embodiment, as a means for repairing the cradle recess S, the UV curable resin 50 filled in the syringe is pressurized, and the application is performed by a dispensing method in which the UV curable resin 50 is discharged from a needle attached to the tip of the syringe. . The dispenser 40, the squeegee 41, and the UV irradiator 42 are retracted while the cutting unit 8 is cutting the sheet so that they do not interfere with the cutting blade 10 and the cradle 20. And when sheet | seat cutting is completed and the cutting part 8 moves to a repair position, the cutting blade 10 will raise to the position which does not interfere with the dispenser 40 and the squeegee 41, respectively.

  Hereinafter, the repair of the recess S will be described with reference to the flowchart of FIG. When repair of the concave portion S is started and the cutting blade 10 is raised and the rising end sensor is activated, the dispenser 40 is moved to the application position of the concave portion S by an air cylinder (not shown) in step S050. Thereafter, in step S051, the squeegee 41 is also moved by a not-shown air cylinder to a position where a predetermined coating thickness is obtained. As a tool for repairing the cradle recess S, a dispenser 40 in which a syringe is filled with a UV curable resin 50 (see FIG. 5B) is used in this embodiment. Since the UV curable resin 50 filled in the dispenser 40 is sufficient for the daily production quantity, the UV curable resin 50 disappears during the repair work of the recess S so that the apparatus does not stop. It is preferable to do. The UV curable resin 50 uses a UV curable varnish, but may be any material that can be cured with a predetermined hardness in addition to UV, and may be, for example, a heat curable resin or a natural curable resin. When using a thermosetting coating material, it is preferable to use a material that is not hardened due to uncured material, or that the adhesive is not transferred to the sheet. When using a thermosetting resin, the same effect can be obtained by providing the cradle 20 with a heater function or providing a mechanism for heating the inside of the apparatus.

  When the movement of the squeegee 41 is completed in step S051, the motor 21 for rotating the cradle 20 is driven to rotate the cradle 20 in step S052. Thereafter, in step S053, the dispenser 40 is turned on and the UV curable resin 50 is applied to the recess S of the cradle 20 (see FIG. 5B). In addition, the application | coating operation | work may be manual as long as it can apply | coat so that the recessed part S may be filled besides the automatic operation | work by the dispenser 40. FIG.

  The application of the UV curable resin 50 by the dispenser 40 is continued until the motor 21 rotates twice after starting the discharge. Meanwhile, the discharged UV curable resin 50 enters the recess S of the cradle 20 and is flattened by the squeegee 41. The application is carried out aiming at precise application of several μm. However, when applying by the dispense method, it may be difficult to control the discharge amount due to pressure variation required for discharge. If the thickness of the coating is varied or the coating is cured with an application amount more than necessary, the sheet 100 may be raised and the sheet 100 may not be cut normally. Therefore, the squeegee 41 is used to flatten the applied UV curable resin 50. When the motor 21 rotates twice, discharge from the dispenser 40 is turned off in step S055, and the application state is confirmed in step S056. If the discharge time becomes longer, the UV curable resin 50 overflows in addition to the recesses S, so it is preferable to reduce the amount to be applied as much as possible. In this embodiment, the cradle 20 is rotated twice. However, the present invention is not limited to this, and it is preferable that the cradle 20 is appropriately changed according to the discharge conditions (discharge pressure, time, needle diameter, temperature, etc.) from the dispenser 40. If the state of application is bad in step S056 (if there is a portion that is not applied), the processes from step S053 are repeated again. If it is determined in step S056 that the application state to the recess S is satisfactory, the process proceeds to step S057.

In addition, the confirmation of the application state in step S056 may be performed visually by a person, or may be automatically performed by image recognition or the like. In step S057, the UV irradiator 42 is turned on to irradiate the UV curable resin 50 applied to the cradle 20 with ultraviolet rays at an illuminance of 250 mJ / cm ² for 10 seconds. The UV irradiation condition is not limited to this set value, and may be freely changed as long as the UV curable resin 50 is cured. However, it is preferable that the irradiation time is short because it affects the productivity. Thereafter, the UV irradiator 42 is turned off in step S058, and the motor 21 is turned off in step S059. In step S060, the squeegee 41 is retracted and the squeegee 41 is cleaned. In cleaning the squeegee 41, the UV curable resin 50 attached to the squeegee 41 is cleaned. For cleaning, the squeegee 41 to which the UV curable resin 50 is attached is attached to a solvent, and then inserted into a sponge or the like to be wiped and dried. Thereafter, in step S061, the dispenser 40 is returned to the standby position, and in step S062, the squeegee 41 is also returned to the standby position, and the repair of the recess S is completed. Such a recess S is repaired every time the sheet is cut.

  In this embodiment, the concave portion S is repaired every time the sheet is cut. However, the present invention is not limited to this. In order to reduce the number of repair operations, the sheet 100 cannot be cut due to the influence of the concave portion S. Repair may be performed.

  Further, as shown in FIG. 5D, the discharged UV curable resin 50 may be flattened by the squeegee 41 after the UV irradiating resin is first irradiated with UV by the UV irradiator 42 and cured. Considering this, the material of the squeegee is preferably metallic so that the cured UV curable resin 50 can be removed.

  In the case of using a naturally cured resin, it is not necessary to provide the UV irradiator 42 or the like, and the squeegee 41 may be omitted if the resin can be precisely applied.

  FIG. 6 is a side view of the cradle 20 after the recess S is repaired. The UV curable resin 50 kept flat on the same surface as the receiving surface 22 of the receiving table 20 is cured, and the receiving table 20 in which the repair of the concave portion S is completed can be obtained.

  When the recessed portion repair process is completed, the sheet is conveyed again, and the sheet cutting process is performed again using the place where the recessed portion S is repaired. And the repair process of the recessed part S is performed again, and it repeats until the sheet | seat 100 supplied is exhausted.

  In the method of this embodiment, since the cradle 20 itself has a motor, it is not necessary to move the dispenser 40, the squeegee 41, and the UV irradiator 42, and the recess S is repaired by the rotation of the cradle 20 by the motor 21. Is possible.

  The repair operation described above can be performed without stopping the cutting device 7. Therefore, for example, by attaching the cutting device 7 to a processing device (recording device or the like) for another sheet 100, it is possible to automatically repair the sheet 100 during a processing operation (recording operation or the like).

  Although the cutting device has been described in the present embodiment, only the repair portion may be unitized as a repair device. In that case, the repair device includes a holding unit that holds an object to be repaired, a dispenser that applies liquid to the object that the holding unit holds by moving relative to the holding unit, and a squeegee that flattens the applied liquid. And a UV irradiator that cures the applied liquid.

  As described above, by providing the cutting device with a function of repairing the concave portion generated in the cradle, it is possible to realize a cutting device that reduces running costs.

(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. Since the basic configuration of the present embodiment is the same as that of the first embodiment, only the characteristic configuration will be described below.

  In the present embodiment, a mode in which the cradle 220 has a roll shape (cylindrical shape) and a shape that can rotate in a direction intersecting the cutting blade 10 will be described. The conditions for performing the cutting process and the recess repairing process are the same as those in the first embodiment.

  FIG. 7 is a perspective view illustrating the cutting unit 208 of the sheet cutting device 207 during sheet cutting according to the present embodiment. After the sheet 100 is conveyed to the cradle 220 and fixed by suction, the cutting blade 10 is abutted against the cradle 220 by the air cylinder 11 with a constant force. In this state, the cutting blade 10 is moved in the direction of the arrow α by the short axis robot 222 to cut the sheet 100.

  FIG. 8 is a perspective view showing the cradle 220 used for cutting a plurality of times, and FIG. 9 is a diagram showing a repair operation for the cradle 220 shown in FIG. As shown in FIG. 8, when the sheet 100 is cut a plurality of times, a recess S is formed in the cradle 220. The UV curable resin 50 is applied to the concave portion S of the cradle 220 by the dispenser 40. Thereafter, the coating thickness is adjusted to a predetermined dimension with the squeegee 41, and then UV irradiation is performed by the UV irradiation machine 42.

  FIGS. 10A and 10B are front views of the entire sheet cutting device 207 in the present embodiment. After performing the cutting operation in the state of FIG. 10A, the cutting part 208 is moved to the repairing part 209 as shown in FIG. In the moved state, the recess S of the cradle 220 is on the side of the cutting blade 10 of the cradle 220, so that the motor 210 that can rotate the cradle 220 is driven to dispose the dispenser 40 and the squeegee 41. The cradle 220 is rotated until the recess S comes to the side. After that, while the driving of the motor 210 is stopped, the cutting unit 208 is moved, the UV curable resin 50 is discharged from the dispenser 40, the squeegee 41 is flattened, and the UV irradiation by the UV irradiator 42 is performed. The UV curable resin 50 is cured. Such a repair operation is performed for each cutting. The UV irradiation conditions are the same as in the first embodiment.

  In the configuration of the present embodiment, the contact position of the cutting blade 10 can be changed to a surface without the recess S by rotating the cradle 220 in the direction of arrow β in FIG. Accordingly, when the cycle of the cutting operation is shorter than the time required for the repair operation, the productivity is improved by rotating the cradle 220 and performing the repair operation after the plurality of recesses S are formed in the cradle 220. It can be improved further.

  As described above, the cutting device includes a cylindrical cradle that can rotate in a direction intersecting the cutting blade, and has a function of repairing a recess generated in the cradle, thereby realizing a cutting device that reduces running costs. Can do.

(Third embodiment)
Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. Since the basic configuration of the present embodiment is the same as that of the first embodiment, only the characteristic configuration will be described below.

  In the present embodiment, a description will be given of a form in which the cradle 320 is plate-shaped, is a cradle that also serves as a sheet suction stage, and is slidable in a direction that intersects the moving direction of the cutting blade 10. The conditions for performing the cutting process and the recess repairing process are the same as those in the first embodiment.

  FIG. 11 is a perspective view illustrating the cutting unit 308 of the sheet cutting device 307 at the time of sheet cutting in the present embodiment. After the sheet 100 is conveyed to the cradle 320 and fixed by suction, the cutting blade 10 is abutted against the cradle 320 by the air cylinder 11 with a constant force. In this state, the cutting blade 10 moves in the direction of the arrow α by the short axis robot 310 to cut the sheet 100.

  FIG. 12 is a perspective view showing the cradle 320 used for cutting a plurality of times, and FIG. 13 is a diagram showing a repair operation for the cradle 320 of FIG. As shown in FIG. 12, when the sheet 100 is cut a plurality of times, a recess S is formed in the cradle 320. The UV curable resin 50 is applied to the concave portion S of the cradle 320 by the dispenser 40. Thereafter, the coating thickness is adjusted to a predetermined dimension with the squeegee 41, and then UV irradiation is performed by the UV irradiation machine 42.

  FIGS. 14A and 14B are front views of the entire sheet cutting apparatus 307 in the present embodiment. After performing the cutting operation in the state of FIG. 14A, the cutting unit 308 is moved to the repair unit 309 as shown in FIG. In the moved state, the recess S of the cradle 320 is on the cutting blade 10 side of the cradle 320, so that the UV curable resin 50 is discharged from the dispenser 40 on the same side while moving the cradle 320. Flatten with the squeegee 41. Thereafter, the UV curable resin 50 is cured by UV irradiation by the UV irradiation machine 42. Such a repair operation is performed for each cutting. The UV irradiation conditions are the same as those in the first and second embodiments.

In the present embodiment, the method of performing the repair operation for each cutting has been described. However, in the configuration of the present embodiment, the slide robot 311 slides the cradle 320 so that the contact position of the cutting blade 10 is a surface without the recess S. Can be changed. Therefore, when the cycle of the cutting operation is shorter than the time required for the repairing operation, the productivity can be further improved by performing the repairing operation after the plurality of recesses S are formed in the cradle 320.

  In addition, the present embodiment has a feature that leads to an effect of reducing the number of parts because the cradle 320 also serves as a sheet suction stage. Further, since the cradle 320 is plate-shaped and the concave portion S is generated in a horizontal plane, even if the UV curable resin 50 is applied, the UV curable resin 50 can be retained in the concave portion S without flowing. It has the feature that it can be repaired evenly while suppressing the occurrence of the above.

  Thus, the cutting device is provided with a cradle that also serves as a sheet suction stage, and has a function of repairing a recess generated in the cradle, thereby realizing a cutting device that reduces running costs.

8 Cutting part 9 Repairing part 10 Cutting blade 20 Receiving base 40 Dispenser 41 Squeegee 42 UV irradiation machine 50 UV curable resin 100 Sheet S Concave part

Claims (13)

In a cutting device comprising a cutting blade for cutting a sheet, and a cradle capable of coming into contact with the cutting blade, and cutting the sheet by sandwiching the sheet between the cutting blade and the cradle,
A cutting apparatus comprising: an application means for applying a curing material by moving relative to the cradle in a recess formed in the cradle by the cutting blade. Flattening means for flattening the hardened material applied to the cradle;
Curing means for curing the curing material applied to the cradle;
The cutting device according to claim 1, comprising:   The cutting apparatus according to claim 2, wherein the curing material is planarized by the planarization unit and then the curing material is cured by the curing unit.   The cutting apparatus according to claim 2, wherein after the curing material is cured by the curing unit, the curing material cured by the planarization unit is planarized.   The cutting device according to any one of claims 1 to 3, wherein the cradle is a cylindrical cradle and is rotatably provided.   The cutting apparatus according to claim 5, wherein the relative movement with respect to the cradle when the curing material is applied by the application unit is performed by rotation of the cradle.   The cutting apparatus according to claim 5, wherein the relative movement with the cradle when the curing material is applied by the application means is performed by the application means moving with respect to the cradle.   The cutting device according to any one of claims 1 to 4, wherein the cradle is a plate-like cradle.   The cutting apparatus according to claim 1, wherein the coating by the coating unit is performed every time the sheet is cut.   The cutting device according to any one of claims 1 to 9, wherein the curing material includes a UV curable resin or a thermosetting resin.   The cutting device according to any one of claims 2 to 10, wherein the flattening means is made of metal.   An image forming apparatus comprising the cutting device according to claim 1. A holding unit for holding an object;
An application means for applying a curing material to the object held by the holding unit by moving relative to the holding unit;
Flattening means for flattening the hardened material applied to the object;
Curing means for curing the curing material applied to the object;
A repair device comprising:

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