JP2008279525A - Grinding device for elastic roller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grinding device for an elastic roller preventing direction failure of polishing marks when grinding elastic rollers. <P>SOLUTION: A roller aligning machine 2 for aligning elastic rollers 30 which are not ground yet and supplied to a roller grinding machine 1 is provided. An input port 13 for inputting the elastic rollers 30 is arranged in the roller aligning machine 2, and in the input port 13, a first guide part 26 for passing one axial end 32 of a shaft and a second guide part 27 for passing the other axial end 33 of the shaft are made linearly oppose to each other, so as to regulate the input posture of the shaft. The elastic roller 30 input to the input port 13 in the input posture of the normal direction is set in axial end holding means 21A, 21B in the normal direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention provides a roller polishing machine that polishes an outer peripheral surface of an elastic layer formed around a shaft having both shaft ends having different shapes to give a predetermined outer dimension and a predetermined polishing eye to the elastic layer. A pair of shaft end gripping means for gripping each of the shaft ends of the shaft; and roller rotating means for driving the shaft end gripping means to rotate the elastic roller in a fixed direction. The present invention relates to a polishing apparatus for an elastic roller comprising a polishing means for polishing an outer peripheral surface of an elastic layer of a rotating elastic roller by applying a grindstone to the outer peripheral surface, and more particularly to a device capable of preventing the occurrence of a defective polishing direction. .

  In an image forming apparatus using an electrophotographic system such as a copying machine or a printer, various elastic rollers formed by forming an elastic layer around a shaft are used in each step of image formation. These elastic rollers Among them, a roller having a function of feeding paper, such as a transfer roller and a paper feed roller, gives a predetermined surface property to the surface of the elastic roller in order to ensure a predetermined paper feeding performance in the paper feeding direction. Therefore, when finishing the outer peripheral surface of the elastic layer, polishing is performed in a predetermined direction.

  Then, in order to form such a polishing eye on the elastic layer surface, a pair of shaft end gripping means for gripping each of both shaft ends of the shaft, and driving the shaft end gripping means to move the elastic roller in a certain direction. 2. Description of the Related Art An elastic roller polishing apparatus is used that includes a roller polishing unit that includes a roller rotating unit that rotates, and a polishing unit that polishes the outer peripheral surface of an elastic layer of a rotating elastic roller by applying a grindstone to the polishing unit.

  In an elastic roller that requires such performance, when the polishing eye is directed in a direction opposite to a predetermined direction with respect to the rotation direction in a state where the elastic roller is attached to the image forming apparatus, Since the desired performance cannot be exhibited, it is very important to align the polishing eye in a predetermined direction in the attached state to the image forming apparatus.

On the other hand, since both the shaft ends of the shaft of the elastic roller have different functions from each other, the shapes of the shaft ends are usually configured to be different from each other (see, for example, Patent Document 1). As an example, as shown in a side view in FIG. 1, a notch 35 called a D-cut is provided only on one shaft end 32 of the shaft 31 of the elastic roller 30 to transmit the rotational driving force on the image forming apparatus side to the elastic layer 34. As shown in a side view of FIG. 2, only one shaft end 32A of the shaft 31A of the elastic roller 30A is formed in a stepped shape, as shown in FIG. 3, and the shaft 31B of the elastic roller 30B is shown in FIG. those protruding length l ₁ from the elastic layer 34 of the one axial end 32B of longer than the projection length l ₂ of the other axial end 33B, and, as shown in FIG. 4, one of the shaft 31C of the elastic roller 30C Those the thickness d ₁ of the end 32C was thicker than the thickness d ₂ of the other axial end 33C and, further, a combination of different elements of the shape described above, for example, as shown in side view in FIG. 5, the elastic A D-cut notch 35 is provided only at one shaft end 32D of the shaft 31D of the roller 30D, and the protrusion length l1 of the _one shaft end 32D from the elastic layer 34 is changed to the protrusion length l of the other shaft end 33D. Can indicate things longer than ₂ .

  In order to direct the polishing eyes in a predetermined direction in the state of being attached to the image forming apparatus, the shaft is attached to the image forming apparatus as a first requirement after the shaft has a direction as described above. At the time, the direction of the shaft with respect to the device should not be reversed, and the second requirement is that when the peripheral surface of the elastic layer around the shaft is polished to form a polishing eye, the polishing eye is not in the direction of the shaft. Both are required to face in a certain direction.

For the first requirement, Patent Document 1 discloses a method for preventing the shaft from being mounted in a direction opposite to a predetermined direction. A roller polisher having a roller rotating means for rotating the elastic roller only in a certain direction is used, and when an operator attaches the shaft to the shaft end gripping means of the roller polisher, the shaft is not reversed. It was carried out while visually checking.
JP 2004-150610 A

  However, since the above mounting is performed by an operator, when mounting the shaft to the shaft end gripping means of the roller polishing machine, there is a possibility that the direction of the shaft is reversed. In view of this, it was not preferable and an improvement was demanded.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a polishing apparatus for an elastic roller that does not cause a defective direction of polishing eyes when the elastic roller is polished.

<1> is a roller polishing machine that polishes an outer peripheral surface of an elastic layer formed around a shaft having both shaft ends having different shapes to give a predetermined outer dimension and a predetermined polishing eye to the elastic layer. A pair of shaft end gripping means for gripping each of the shaft ends of the shaft, and a roller rotating means for driving the shaft end gripping means to rotate the elastic roller in a certain direction. In the polishing apparatus for an elastic roller, comprising a polishing means for polishing the outer circumferential surface of the elastic layer of the rotating elastic roller by applying a grindstone to the polishing surface,
A roller aligner that aligns unpolished elastic rollers supplied to the roller polisher is arranged,
The roller aligner is provided with an inlet for introducing the elastic roller into the roller aligner. The inlet has a first guide portion that allows one shaft end of the shaft to pass therethrough, and the shaft. A second guide portion that allows the other shaft end to pass is linearly opposed, and one shaft end of the shaft corresponds to the first guide portion and the other shaft end corresponds to the second guide portion. The normal orientation of the elastic roller can be inserted, and the one shaft end corresponds to the second guide portion and the other shaft end corresponds to the first guide portion. It is configured to make it impossible to insert the elastic roller in a direction opposite to the correct orientation,
The elastic roller that is inserted into the insertion port in a normal orientation posture is a polishing device for an elastic roller configured to be set in the shaft end gripping means in a normal direction.

  <2> In <1>, when the direction of the straight line connecting the first guide part and the second guide part is referred to as the inlet width direction, the inlet is defined as the inlet width direction of the first guide part. The elastic roller polishing apparatus is configured such that the opening length in the is different from that of the second guide portion.

  <3> is a shape of an opening having a step corresponding to a D-cut notch formed in one shaft end of the shaft into which the first guide portion is inserted, in <1>. And the second guide portion is configured to have an opening shape without a step.

  According to <1>, a roller aligner that aligns unpolished elastic rollers supplied to the roller polisher is arranged, and in this roller aligner, the elastic rollers are put into the roller aligner. And a roller inlet for supplying the elastic roller to the roller aligner. The roller inlet passes through one shaft end of the shaft. One guide portion and a second guide portion that allows the other shaft end of the shaft to pass therethrough are linearly opposed, one shaft end of the shaft being the first guide portion, and the other shaft end being the The elastic roller can be inserted in a normal orientation corresponding to the second guide portion, and the one shaft end can be used as the second guide portion, and the other shaft end can be used as the first guide portion. Corresponding to each of the above Since it is configured to make it impossible to insert the elastic roller in the opposite direction to the normal orientation, the direction of the elastic roller can be made uniform, and the elastic roller of the present invention The polishing apparatus is configured so that the elastic roller that is inserted into the insertion port in a normal orientation is set in the shaft end gripping means in a normal direction. It can be mounted in a fixed direction with respect to the gripping means, and therefore the polishing eye can be set in a fixed direction with respect to the direction of the shaft.

  According to <2>, when the direction of a straight line connecting the first guide part and the second guide part is referred to as an inlet width direction, the inlet is defined as an opening length in the inlet width direction of the first guide part. However, since it is configured to be different from the second guide portion, it is possible to effectively prevent reverse insertion in the roller aligner of elastic rollers having different shaft end lengths on the left and right.

  According to <3>, the insertion port has an opening shape having a step corresponding to a D-cut notch formed at one shaft end of the shaft into which the first guide portion is inserted. Since the second guide portion is configured to have a stepped opening shape, it is possible to effectively prevent reverse insertion in the roller aligner of the elastic rollers having different shaft end shapes on the left and right. .

  Embodiments of the present invention will be described with reference to the drawings. FIG. 6 is a schematic plan view showing the elastic roller polishing apparatus of this embodiment, FIG. 7 is an arrow view corresponding to the arrow AA in FIG. 6, and FIG. 8 is a line BB in FIG. FIG. 1 is an arrow view corresponding to an arrow view, and the elastic roller polishing apparatus 10, as an example, shows a roller polishing machine 1 for polishing an elastic roller 30 formed with an elastic layer 34 around a shaft 31 shown in FIG. 1. And a roller aligner 2 for aligning the unpolished elastic rollers 30 supplied to the roller polisher 1.

  The roller polisher 1 drives a pair of shaft end gripping means 21A and 21B that grips both shaft ends 32 and 33 of the shaft 31 of the elastic roller 30 and the shaft end gripping means 21A and 21B to drive the elastic roller. The roller rotating unit 22 rotates the roller 30 in a fixed direction A, and the polishing unit 23 applies a grindstone 24 to the outer peripheral surface of the elastic layer 34 of the rotating elastic roller 30 to polish it.

  As shown in FIG. 7, the grindstone 24 is configured to translate in the axial direction of the elastic roller 30 gripped by the gripping means 21A and 21B while rotating in a constant direction at a constant rotational speed. When the peripheral surface and the outer peripheral surface of the elastic layer 34 are relatively displaced in a predetermined direction at a predetermined relative speed, the outer peripheral surface of the elastic layer 34 is finished to a predetermined outer dimension. As shown in the figure, a polishing eye 35 having a constant surface property facing in a certain direction is formed over the entire length of the elastic layer 34.

  Here, both shaft ends 32 and 33 of the shaft 31 of the elastic roller 30 have different shapes as shown in FIG. 1, and the elastic roller polishing apparatus 10 shown in FIG. 6 is shown in FIG. The elastic roller 30 is polished, and a notch 35 called a D-cut is formed on one shaft end 32, and the other shaft end 33 has a cylindrical shape. Not formed.

  The roller aligner 2 is configured to align an unpolished elastic roller 30 supplied to the roller grinder 1, and the roller aligner 2 includes an inlet 13 for feeding the unpolished elastic roller 30, A discharge port 14 for discharging the inserted elastic roller 30 and a pair of opposite ones that guide the shaft ends 32 and 33 of the elastic roller 30 while the elastic roller 30 is moved from the input port 13 to the discharge port 14. Guide grooves 11 and 12 are provided.

  Further, a roller transfer machine 3 is provided between the roller polishing machine 1 and the roller alignment machine 2 to transfer the elastic roller 30 discharged from the roller alignment machine 2 to the roller polishing machine 1. The roller transfer machine can have various configurations, but the shaft end 32 guided and discharged by one guide groove 11 of the roller aligner 2 is always one of the shaft ends of the roller polishing machine 1. It is an essential requirement that the shaft end 33 set in the gripping means 21A, guided in the other guide groove 12 of the roller aligner 2 and discharged is set in the other shaft end gripping means 21B. Yes, in the illustrated case, the roller transfer machine 3 includes a roller table 16 that reciprocates between the roller polishing machine 1 and the roller aligner 2, and a table moving means (not shown) that reciprocates the roller table 16. Composed.

Then, the operation starts from the standby state shown in FIG. 6 in which the roller base 16 places the unpolished elastic roller 30 and is located at the end P ₁ on the roller aligner 2 side in the reciprocating displacement. Then, after the elastic roller 30 is discharged from the roller polishing machine 1 after completion of polishing, the roller mounting table 16 is displaced to the end P ₂ on the roller polishing machine 1 side in the reciprocating displacement, and the shaft end gripping means of the roller polishing machine 1 there. The elastic roller 30 is delivered to 21A and 21B, and then returns to the end P ₁ on the roller aligning machine 2 side, and the elastic roller 30 discharged from the roller aligning machine 2 is received and placed on the roller mounting table 16 for one cycle. Repeat as above.

Incidentally, in the operation described above, the empty roller stand 16, when returning to the end P ₁ of the side of the roller aligning device 2, in order to avoid interference with the elastic roller 30, the end P ₁ from lowers the roller stand 16 starts moving to the roller stand 16 it is preferable to return to the original height from the middle or back back to the end P _1.

  On the other hand, a plurality of elastic rollers 30 are stored in the roller aligner 2, and the insertion port 13 into which these elastic rollers 30 are inserted is provided at a position higher than the discharge port 14, and the elastic roller 30 is discharged from the discharge port 14. Then, each elastic roller 30 is configured to move downward toward the discharge port 14 while being guided by the guide grooves 11 and 12 that guide the shaft ends 32 and 33 of the shaft 31 due to gravity. ing.

  When the elastic roller 30 is discharged from the discharge port 14, the elastic rollers 30 are discharged one by one by the operation of the stoppers 18 and 19 arranged with a space corresponding to one elastic roller. In the case of the example shown in FIG. 8, both the stoppers 18 and 19 are lowered to suppress the discharge of the rollers, and only the first stopper 18 on the side close to the discharge port 14 is raised from the illustrated state. Only the elastic roller 30 located closest to the discharge port 14 is discharged and transferred to the roller mounting table 16.

  At this time, since the second stopper 19 located on the side far from the discharge port 14 remains lowered, the other elastic rollers 30 are suppressed from being discharged from the roller aligner 2 by the second stopper 19. Then, from this state, the first stopper 18 is lowered and the second stopper 19 is raised, whereby each of the elastic rollers 30 can be advanced toward the discharge port 14 by one, By lowering the second stopper 19, the operation for one cycle can be completed and the state shown in the figure can be restored.

  Here, one of the characteristic requirements of the present invention is that the insertion port 13 has a first guide portion 26 through which one shaft end 32 of the shaft 31 passes and a second guide through which the other shaft end 33 of the shaft 31 passes. An elastic roller in a normal direction, which is formed so as to face the portion 27 in a straight line, with one shaft end 32 of the shaft 31 corresponding to the first guide portion 26 and the other shaft end 33 corresponding to the second guide portion 27. The closing posture is made possible, and one shaft end 32 corresponds to the second guide portion 27 and the other shaft end 33 corresponds to the first guide portion 26 in a direction opposite to the normal direction. The elastic roller charging posture is configured so as to make it impossible to input the elastic roller, whereby the elastic roller 30 can be prevented from being charged in the reverse direction.

  As a second feature of the present invention, as described above, the roller transfer device 3 passes through one guide portion 26 of the inlet 13 of the roller aligner 2 and is guided and discharged to the guide groove 11. The shaft end 32 is set on one shaft end gripping means 21A of the roller polishing machine 1, passes through the other guide portion 27 of the insertion port 13 of the roller aligner 2, and is guided to the other guide groove 12 and discharged. The formed shaft end 33 is configured to be set on the other shaft end gripping means 21B. That is, the elastic roller 30 thrown into the throwing port 13 in the throwing posture in the normal direction is the shaft in the normal orientation. Since it is configured to be set on the end gripping means 21A, 21B, a combination of the first and second characteristic requirements enables a directional shuff when attaching the elastic roller 30 to the roller polishing machine 1. The grind 31 of the elastic roller 30 can be made constant with respect to the direction of the shaft 31.

  FIG. 9A is a cross-sectional view showing the insertion port 13 corresponding to the arrow DD in FIG. 8, and the first guide portion 26 is formed at one shaft end 32 of the shaft 31 to be inserted. As shown in FIG. 9 (b), the second guide portion 27 has an opening shape having a step 29 corresponding to the D-cut notch 35, and the second guide portion 27 has an opening shape without a step. It is possible to feed the elastic roller in a normal orientation with one shaft end 32 of the shaft 31 corresponding to the first guide portion 26 and the other shaft end 33 corresponding to the second guide portion, As shown in FIG. 9C, an elastic roller in a direction opposite to the normal direction, in which one shaft end 32 corresponds to the second guide portion 27 and the other shaft end 33 corresponds to the first guide portion 26. For the throwing posture, the other shaft end 33 and the first guide portion 26 interfere with each other to cause an elastic roll. It is configured to not be able to inject La 30 on roller alignment machine 2.

  In the guide groove 11 connected to the first guide portion 26, a stepped portion can be provided over the entire length, but as shown in a cross-sectional view corresponding to the EE cross section of FIG. The stepped portion is sufficient as the stepped portion 13 and the effect of preventing the elastic roller 30 from being set in the reverse direction on the roller aligner 2 can be obtained.

  Further, when an elastic roller having shaft ends 32D and 33D having different lengths on the left and right, such as the elastic roller 33D shown in FIG. 5, is polished, the inlet having the configuration shown in the sectional view of FIG. 13 is used, and when the direction of the straight line 28 connecting the first guide portion 26A and the second guide portion 27A is referred to as the inlet width direction, the inlet 13A is an opening in the inlet width direction of the first guide portion 26A. The length a and the opening length b of the second guide portion 27A are different from each other. With this configuration, as shown in FIG. As shown in FIG. 11 (c), the end portion 36 of the elastic layer 34 adjacent to the shorter shaft end 33D has an end portion 36 adjacent to the shorter shaft end 33D, as shown in FIG. 11 (c). The elastic roller 30D interferes with the second guide portion 27A. It is configured to disable the power.

  As described above, two examples of the configuration of the insertion port have been described with reference to the drawings. In addition to this, as shown in FIG. 4, elastic rollers having different thicknesses of the shaft ends 32C and 33C on the left and right sides. When polishing 30C, the opening height of the guide portion (corresponding to the thickness of the shaft end) differs between the left and right, or the stepped shaft end 32A and the shaft end 33A not shown in FIG. In the case of the shaft 31 </ b> A having left and right, the same effect can be obtained by making only one of the guide portions into a shape corresponding to the step.

It is sectional drawing which shows the elastic roller made into the object of grinding | polishing in the grinding | polishing apparatus for elastic rollers which concerns on this invention. It is sectional drawing which shows the elastic roller of another example. It is sectional drawing which shows the elastic roller of another example. It is sectional drawing which shows the elastic roller of another example. It is sectional drawing which shows the elastic roller of another example. 1 is a schematic plan view showing a polishing apparatus for an elastic roller according to the present invention. FIG. 7 is a view corresponding to the arrow AA in FIG. 6 and showing an elastic layer that is being polished by a grindstone. FIG. 7 is a side view showing a roller aligner corresponding to the view along arrow B-B in FIG. 6. It is sectional drawing which shows an insertion port corresponding to the DD arrow of FIG. It is sectional drawing which shows the guide groove in the surface corresponding to the EE cross section of FIG. It is sectional drawing which shows the modification of an insertion port.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Roller polisher 2 Roller aligner 3 Roller transfer machine 10 Elastic roller polisher 11 Guide groove 12 Guide groove 13, 13A Roller aligner input port 14 Roller aligner discharge port 16 Roller mount 17 Length of guide groove Direction inlet side portion 18 First stopper 19 Second stopper 21A, 21B Shaft end gripping means 22 Roller rotating means 23 Polishing means 24 Grinding stone 26, 26A First guide part 27, 27A Second guide part 28 Straight line 30, 30A 30B, 30C, 30D Elastic roller 31, 31A, 31B, 31C, 31D Shaft 32, 32A, 32B, 32C, 32D One shaft end of the shaft 33, 33A, 33B, 33C, 33D The other shaft end of the shaft 34 Elastic layer 35 Notch 36 End of elastic layer

Claims (3)

A roller polishing machine is provided that polishes the outer peripheral surface of an elastic layer formed around a shaft having both shaft ends having different shapes to give a predetermined outer dimension and a predetermined polishing eye to the elastic layer. The polishing machine comprises a pair of shaft end gripping means for gripping both shaft ends of the shaft, a roller rotating means for driving the shaft end gripping means to rotate the elastic roller in a fixed direction, and a rotating elastic roller In the polishing apparatus for an elastic roller comprising a polishing means for applying a grinding stone to the outer peripheral surface of the elastic layer and polishing it,
A roller aligner that aligns unpolished elastic rollers supplied to the roller polisher is arranged,
The roller aligner is provided with an inlet for introducing the elastic roller into the roller aligner. The inlet has a first guide portion that allows one shaft end of the shaft to pass therethrough, and the shaft. A second guide portion that allows the other shaft end to pass is linearly opposed, and one shaft end of the shaft corresponds to the first guide portion and the other shaft end corresponds to the second guide portion. The normal orientation of the elastic roller can be inserted, and the one shaft end corresponds to the second guide portion and the other shaft end corresponds to the first guide portion. It is configured to make it impossible to insert the elastic roller in a direction opposite to the correct orientation,
An elastic roller polishing apparatus configured such that an elastic roller introduced into the insertion port in a normal orientation is set on the shaft end gripping means in a normal direction.   When the direction of the straight line connecting the first guide part and the second guide part is called the inlet width direction, the opening length in the inlet width direction of the first guide part is the second guide part. The polishing apparatus for an elastic roller according to claim 1, wherein the polishing apparatus is configured differently.   The insertion port has an opening shape having a step corresponding to a D-cut notch formed at one shaft end of the shaft into which the first guide portion is inserted, and the second guide portion is 2. The polishing apparatus for an elastic roller according to claim 1, wherein the polishing apparatus is configured to have a stepped opening shape.

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