JP4298895B2 - Roller marking method and roller demolding and marking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus for marking rollers whereby many rollers can be speedily, correctly and safely marked without a direction of the rollers being made incorrect and a production efficiency can be enhanced. SOLUTION: A plurality of rollers 2 are manufactured in a state in which the rollers continuously fitted to a mandrel 5 are surface treated so that outer circumferential faces show the same properties in the same rotation direction and different properties in the opposite rotation direction. In a marking process for the rollers 2 following the manufacturing process, spindles 15 of the same diameter as or a small diameter than a diameter of the mandrel 5 are continuously arranged in one line to one end of the mandrel, and the plurality of rollers 2 fitted to the mandrel 5 are directly shifted to the spindles 15. The marking process is accordingly sequentially carried out to one side faces of the rollers 2 in a state that a directivity of the surface treatment of all the rollers 2 outfitted to the spindles 15 is maintained the same.

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a roller marking method for marking a roller, such as a paper feed roller, in office equipment such as a copying machine and a printer, to specify the direction of the roller, and to remove the roller from a mandrel and to a marking device.
[0002]
[Prior art]
The sheet feeding roller as described above is formed of an adhesive rubber and has an anisotropic surface treatment on the outer peripheral surface, that is, by forming a large number of ridges facing a minute axial direction of a sawtooth cross section, for example. In some cases, a surface treatment is performed so that the frictional force or the like on the paper is different between one rotation direction and the opposite rotation direction.
[0003]
When such a paper feed roller is assembled directly on a copying machine or by attaching a plurality of short paper feed rollers to a roller shaft at a predetermined interval, the direction of the roller must not be mistaken. .
Therefore, conventionally, one side end face of this type of roller is marked.
[0004]
[Problems to be solved by the invention]
However, in the conventional marking method, since it is difficult to handle the adhesive rubber roller, it is often relied on manually, and the protrusions appearing on the surface of the roller are very small, and it is difficult to distinguish the direction by visual inspection. At times, the roller orientation may be wrong and marking may be made on the opposite side end face, resulting in poor marking reliability.
[0005]
Further, automation is difficult, production efficiency is low, and it is not suitable for quickly marking a large number of rollers.
[0006]
In view of the above-mentioned problems of the conventional technology, the present invention can mark a large number of rollers quickly, accurately, and safely without increasing the direction of the rollers, thereby improving production efficiency. It is an object of the present invention to provide a method for marking a roller, and a device for demolding and marking a roller from a mandrel .
[0007]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) In the method of marking rollers are fitted in succession to the mandrel, and an outer peripheral surface, the same in the rotational direction with the same nature appears, the anisotropy so as to appear different nature in the opposite rotational directions to each other In the roller marking process following the manufacturing process of a plurality of rollers manufactured in a surface-treated state, at one end of the mandrel, a support shaft having the same diameter or a small diameter is disposed so as to be continuous in a straight line. By moving the plurality of rollers fitted to the mandrel as they are to the support shaft side, the directionality of the surface treatment of each roller fitted on the support shaft is kept the same, and one of the rollers A marking process is sequentially performed on the side surfaces while maintaining the same directionality.
[0008]
(2) In the above paragraph (1), a plurality of support shafts are set up at equal intervals on the same circumference of the turntable, and the turntable is centered so that one of the support shafts is aligned with the mandrel. A plurality of rollers, which are rotatably arranged around the axis and are fitted on the mandrel, are sequentially transferred to each support shaft in a batch manner.
[0009]
(3) In the above item (1) or (2), marking is performed by irradiating a part of one side of each roller with a laser beam.
[0010]
(4) In any one of the above items (1) to (3), each roller is formed of an adhesive rubber.
[0011]
(5) In the demolding and marking device from the mandrel of the roller, the outer peripheral surface, with appear identical properties in the same rotational direction from each other, is made a surface treatment of the anisotropic so different properties appear in the opposite rotational direction a plurality of rollers are positioned a support shaft so as to be continuous to one end of the fitting mandrel, a plurality of rollers which are fitted on the mandrel of the roller comprising a pressing means for pressing toward said support shaft a demolding device from the mandrel, among fitted over a plurality of rollers on the support shaft, it is assumed and a marking device comprising a marking means for marking one side end surface of the outermost rollers.
[0012]
(6) In the above (5), in the demolding apparatus, a plurality of support shafts are erected at equal intervals on the same circumference on the side surface facing the mandrel, and any one of the support shafts is aligned with the mandrel. so that is rotatably supported, and the marking device, one of the support shaft so as to face the marking means, shall be provided with the turntable so as to be rotatably supported.
[0013]
(7) In the above item (5) or (6), the marking means is laser irradiation means for printing a mark on one side end surface of the roller by irradiating a laser beam.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, with reference to the attached drawings, an embodiment of a method for marking a roller according to the present invention will be described together with embodiments of an apparatus used therefor.
[0015]
FIG. 1 shows four rollers (2) with a mark (1) attached to only one side by the method of the present invention, with the side with each mark (1) attached facing the same direction. A state when the shaft (3) is fitted with a predetermined interval and used as a paper feed roller in a copying machine or the like is shown.
[0016]
In this way, the orientation of the roller (2) is adjusted by using the mark (1) as a clue, so that the direction of the anisotropic surface treatment applied to the outer peripheral surface (2a) of each roller (2) can be improved. It can be matched.
[0017]
FIG. 2 shows the state of the final stage of the manufacturing process of the roller (2). The shaft-shaped mandrel (5) in which the gear portion (4) for rotation driving is fixedly fitted to one end portion of the shaft portion (5a). ) Is fitted with a plurality of rollers (6) made of adhesive rubber.
[0018]
An anisotropic surface treatment is performed on the outer peripheral surface of each roller (6). That is, for example, by forming a large number of ridges facing the axial direction of a sawtooth cross section, the frictional force on the paper or the like is different between one rotation direction of the roller (2) and the opposite rotation direction. Surface treatment is applied.
[0019]
Such surface treatment is performed by machining the outer peripheral surface (2a) of the roller (2) while rotating the mandrel (5) about its axis.
[0020]
Actually, after this surface treatment, a long cylindrical body (not shown) made of adhesive rubber fitted to the mandrel (5) is cut at equal intervals in the axial direction of the mandrel (5), The individual rollers (2) are formed, and the finished product remains in the state of being fitted to the mandrel (5).
[0021]
In this way, the mandrel (5) with the completed plurality of rollers (2) fitted is mounted on a demolding machine (pushing means) (6) as shown in FIG.
The demolding machine (6) is fixed on the fixed bed (7), the movable bed (8) mounted on the fixed bed (7) so as to be movable back and forth over the required range, and the movable bed (8). It comprises a two-divided holder (9) and drive means (not shown) for moving the movable bed (8) back and forth.
[0022]
The holder (9) has a small-diameter hole (10) through which the shaft portion (5a) of the mandrel (5) can be inserted and the gear portion (4) in the axial direction when the divided pieces (not shown) are closed to each other. A large-diameter hole (11) that can freely slide is formed, the shaft (5a) of the mandrel (5) is formed in the small-diameter hole (10), and the gear is formed in the large-diameter hole (11). The portion (4) is fitted, the tip of the mandrel (5) is brought into contact with the tip of one of the support shafts (15) in the turntable device (12) described below, and the holder (9 ) Together with the movable bed (8) as shown by the arrow in FIG. 3, at the front end of the holder (9), the plurality of rollers (2) fitted to the mandrel (5) are simultaneously pushed forward. It can be transferred to the support shaft (15).
[0023]
The turntable device (12) includes a turntable (14) mounted on the rear surface of the box (13) in FIG. 3 so as to be rotatable around a horizontal axis, and the like on the same circumference on the rear surface of the turntable (14). A plurality of (eight in the illustrated example) support shafts (15) projecting at intervals and the turntable (14) provided in the box (13) have the same pitch as the support shaft (15). It comprises driving means (not shown) that can be intermittently rotated with a pitch.
[0024]
The outer diameter of each support shaft (15) should be substantially equal to or slightly smaller than the outer diameter of the shaft portion (5a) of the mandrel (5), and each transferred roller (2) is supported by the support shaft. From (15), it should be of a level that does not drop due to its own weight.
[0025]
Therefore, one support shaft (in which a plurality of rollers (2) fitted to one mandrel (5) are arranged in a straight line with the mandrel (5) in one mold removal operation. 15), then turn the turntable (14) by one pitch and perform the second and subsequent demolding work, so that the rollers (2) from the mandrel (5) to each support shaft (15) Can be transferred in batches .
[0026]
Next, after a plurality of rollers (2) are mounted on all the support shafts (15), the entire turntable device (12) is rotated by 90 ° so that each support shaft (15) faces upward. It is attached to the marking device (marking means) (16) shown in FIG.
[0027]
The marking device (16) includes a turntable device (12) that faces upward, a support base (17) that supports the fixed position, a column (18) that is erected on one side of the support base (17), Directly above the table device (12), it is mounted on the column (18) so that the vertical position can be adjusted, and above the uppermost roller (2) mounted on a predetermined support shaft (15) in the turntable device (12). A laser irradiation device (19) for irradiating a part of the end face located to burn a mark, a roller holding means (20), a roller discharging means (21), and a roller raising means (22) ing.
[0028]
As shown in FIGS. 4 to 6, the roller holding means (20) has a semicircular arc shape provided at the tip of the piston rod (24) advanced from the air cylinder (23) provided in the column (18). By holding the holding piece (25) against one side of the roller (2) to be marked, the roller (2) can be held so as not to move.
[0029]
The roller discharge means (21) grips the marking-finished roller (2) with an openable / closable gripping piece (26), and lifts, moves sideways, and moves back and forth to remove the roller (2). It moves to a position (not shown) and can be formed by a known finger type industrial robot for transferring workpieces.
[0030]
The roller raising means (22) includes a finger (27) below the lowermost roller (2) in the row after the uppermost roller (2) having been marked is discharged by the roller discharge means (21). Is inserted to raise the entire roller (2) of the row by the length of one roller (2), so that the uppermost roller (2) is always kept at a constant height. .
[0031]
These roller holding, discharging and raising means (20), (21), and (22) are not directly related to the present invention, and thus further detailed description is omitted.
[0032]
In the marking device (16), the holding piece (25) of the roller holding means (20) is brought into contact with the uppermost roller (2) externally fitted to the support shaft (15) located at a predetermined position. Then, a part of the upper end surface of the roller (2) is irradiated with the laser beam emitted from the laser irradiation device (19), and the mark (1) is printed thereon.
[0033]
After marking, the holding piece (25) of the roller holding means (20) is retracted, and only the roller (2) after marking is transferred to the discharge position by the roller discharge means (21), and then the roller raising means By (22), all the rollers (2) located directly under the discharged roller (2) are raised by one.
[0034]
A part of the upper end surface of the raised uppermost roller (2) is irradiated with a laser in the same manner as described above to give a mark (1), and thereafter the same operation is repeated to obtain one support shaft (15). When the marking of all the rollers (2) fitted in is finished, the turntable (14) is rotated by one pitch, and the adjacent support shaft (15) is positioned at the laser irradiation position and fitted to it. The combined roller (2) is marked in the same manner as described above.
[0035]
When the marking of the rollers (2) fitted to all the support shafts (15) is completed, the turntable device (12) is placed in front of the mold remover (6) shown in FIG. disposed defeat to face, performs sorting of the roller (2) to each support shaft (15).
[0036]
【The invention's effect】
According to the first aspect of the present invention, since the plurality of rollers immediately after being manufactured are transferred to the marking process without changing the direction at the time of manufacture, there is no possibility of erroneous parts to be marked. Reliability can be ensured.
[0037]
In addition, since all the rollers can be passed through the support shaft, the work can be performed safely and without any risk of the rollers falling off, so that the rollers can be positioned easily and accurately. To increase production efficiency.
[0038]
According to the invention of claim 2, the plurality of rollers fitted to the mandrel are directly transferred to one of the support shafts, and the next turntable is rotated to align another support shaft with the mandrel, By transferring the next manufactured rollers from the mandrel to the support shaft, a large number of rollers can be transferred sequentially to the plurality of support shafts in batch order in the order they were manufactured. Can be handled continuously and safely.
[0039]
According to the third aspect of the present invention, the mark can be quickly and surely baked on the adhesive rubber roller, and there is no fear that the mark is peeled off due to contact with other objects.
[0040]
According to the invention described in claim 4, the friction coefficient of the outer peripheral surface is large, and it is possible to provide an optimum high-quality roller as a paper feed roller and the like. Even in such a case, the marking process can be performed safely, quickly and reliably.
[0041]
According to the fifth aspect of the present invention, there is provided an inexpensive demolding and marking apparatus for a roller from a mandrel , which has a simple structure and can quickly, safely and reliably mark a large number of rollers. Can do.
[0042]
According to the invention described in claim 6, in addition to the effect similar to that described above as the effect of the invention described in claim 2, the apparatus for removing and marking the roller from the mandrel with a simple structure can be provided. There is an advantage that it can be provided.
[0043]
According to the seventh aspect of the invention, the same effect as described above can be achieved as the effect of the third aspect of the invention.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a use state of a roller marked by the method of the present invention.
FIG. 2 is a perspective view showing a roller immediately after production used for carrying out the method of the present invention and a mandrel fitted with the roller.
FIG. 3 is a side view showing a situation in which a roller is transferred from a mandrel to a support shaft side by a demolding machine and a turntable device.
FIG. 4 is also a front view of the marking device.
FIG. 5 is a plan view schematically showing the relationship among a turntable, roller holding means, and roller raising means in the marking device.
FIG. 6 is a plan view schematically showing a turntable, roller holding means, and roller discharge means in the marking device.
[Explanation of symbols]
(1) Mark
(2) Roller
(2a) Outer peripheral surface
(3) Roller shaft
(4) Gear part
(5) Mandrel
(5a) Shaft
(6) Demolding machine (pushing means)
(7) Fixed bed
(8) Movable bed
(9) Holder
(10) Small diameter hole
(11) Large diameter hole
(12) Turntable device
(13) Box
(14) Turntable
(15) Support shaft
(16) Marking device
(17) Support stand
(18) Column
(19) Laser irradiation device (laser irradiation means)
(20) Roller holding means
(21) Roller discharge means
(22) Roller raising means
(23) Air cylinder
(24) Piston rod
(25) Holding piece
(26) Grip piece
(27) Finger

Claims (7)

Is fitted in succession on the mandrel, and an outer peripheral surface, is manufactured in a state in which with appears similar nature in the same rotational directions, the surface treatment of the anisotropic so different properties appear in the opposite direction of rotation has been made In the roller marking process following the manufacturing process of the plurality of rollers, a support shaft having the same diameter or a small diameter is arranged at one end of the mandrel so as to be continuous in a straight line. By moving the roller as it is to the support shaft side, the directionality of the surface treatment of each roller fitted on the support shaft is kept the same, and the directionality is the same on one side surface of each roller. A method of marking a roller, characterized in that the marking process is sequentially performed in a state in which the roller is maintained.   A plurality of support shafts are erected at equal intervals on the same circumference of the turntable, and the turntable is rotatably arranged around its central axis so that one of the support shafts is aligned with the mandrel, The roller marking method according to claim 1, wherein the plurality of rollers fitted to the mandrel are sequentially transferred to each support shaft in a batch manner.   3. The method of marking a roller according to claim 1, wherein marking is performed by irradiating a part of one side of each roller with a laser beam.   The roller marking method according to claim 1, wherein each roller is made of an adhesive rubber. On the outer peripheral surface , the same property appears in the same rotational direction as each other, and continues to one end of a mandrel fitted with a plurality of rollers having anisotropic surface treatment so that different properties appear in the reverse rotational direction. located the support shaft as the demolding apparatus a plurality of rollers which are fitted to the mandrel from the mandrel of the roller comprising a pressing means for pressing toward said support shaft,
A marking device comprising marking means for marking one side end surface of the outermost roller of the plurality of rollers fitted on the support shaft ; Demolding and marking device. In the demolding device, a plurality of support shafts are erected at equal intervals on the same circumference on the side facing the direction of the mandrel, and are supported rotatably so that any one of the support shafts is aligned with the mandrel, and in the marking device, either as the support shaft is opposed to the marking means, demolding and marking device from the mandrel rotatably supported by way roller according to claim 5 and a turntable . 7. The demolding and marking device for a roller from a mandrel according to claim 5 or 6, wherein the marking means is laser irradiation means for printing a mark on one side end surface of the roller by irradiating a laser beam.

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