JP4309554B2 - Damping member insertion method and damping member automatic insertion device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibration damping member of an electrophotographic photosensitive drum, and more particularly to insertion of a cylindrical vibration damping member having a slit into an inner wall surface of a cylindrical photosensitive drum.
[0002]
[Prior art]
Photoreceptor drums that form latent images while rotating are used in electrophotographic apparatuses such as copying machines, printers, and facsimiles. For example, an aluminum drum is used as the photoreceptor support, the surface thereof is mirror-finished, and the photoreceptor is deposited or coated.
[0003]
As a measure for reducing noise due to vibration of the photosensitive drum and preventing image quality deterioration, a photosensitive drum in which a sliding contact member or a filler is inserted on the inner wall surface is disclosed in JP-A-8-54804 and JP-A-5-34936. JP-A-7-152285, JP-A-7-302025, JP-A-8-1466636, JP-A-10-97158, JP-A-11-305598, JP-A-11-194518, and the like. There are no proposals for equipment.
[0004]
Therefore, it has been desired to provide a method and an insertion device for inserting a damping member (hereinafter referred to as a silencer) into the photosensitive drum.
[0005]
[Problems to be solved by the invention]
However, as mentioned above, many proposals have been made for noise reduction and image quality deterioration countermeasures due to vibration of the photosensitive drum. However, there are the following problems in the work to commercialize it, saving space and reducing costs. It is difficult to rely on human manual work.
[0006]
That is, when the silencer is inserted into the inner wall surface of the photosensitive drum, dust generated by frictional contact between the photosensitive drum and the silencer adheres to the surface of the photosensitive drum.
Also, after inserting the silencer into the inner wall surface of the photosensitive drum, the outer diameter of the silencer is larger than the inner diameter of the photosensitive drum so that the silencer does not move inside the photosensitive drum. Sometimes it is necessary to reduce the outer diameter of the silencer.
[0007]
In addition, when the automatic insertion device is introduced, if the silencer is handled by a robot, a high gripping force for reducing the outer diameter and a high positioning accuracy of the photosensitive drum are required. Also, a dedicated space for installing the automatic insertion device is required.
In addition, when the work is performed manually, a large number of people are required to increase the production quantity, and inadvertent parts and damage due to mistakes cannot be avoided. In addition, it is necessary to secure personnel for day and night production.
The present invention proposes a silencer insertion method that solves these problems and an insertion device that employs the method.
[0008]
Accordingly, an object of the present invention is to provide a damping member insertion method and a damping member automatic insertion device that can simplify the apparatus without touching a silencer whose shape is unstable and difficult to handle. Place It is to provide.
[0009]
Another object of the present invention is to provide a vibration damping member insertion method and a vibration damping member automatic insertion device in which dust generated by frictional contact between the photosensitive drum and the silencer during insertion is less likely to adhere to the surface of the photosensitive drum. There is.
[0010]
Another object of the present invention is to provide a vibration damping member automatic insertion device having the most effective insertion operation when a robot is used as a handling means of an automatic insertion device.
[0011]
Another object of the present invention is to provide a vibration damping member automatic insertion device that does not cause an insertion remaining error (the silencer remains on the shaft) during a silencer insertion operation when the robot is used as a handling means of the automatic insertion device. It is in.
[0012]
Another object of the present invention is to provide a vibration damping member automatic insertion device that most effectively uses a robot as a handling means of the automatic insertion device.
[0013]
Another object of the present invention is to provide a damping member automatic insertion device having silencer alignment means among necessary elements of an automatic insertion device for inserting a silencer into an inner wall surface of a photosensitive drum.
[0014]
Another object of the present invention is to provide a vibration damping member automatic insertion device provided with specific silencer alignment means when the silencer is inserted into the inner wall surface of the photosensitive drum.
[0015]
Another object of the present invention is to provide an automatic vibration damping member insertion device that determines the directionality of a silencer by measurement.
[0016]
Another object of the present invention is to provide a vibration damping member automatic insertion device provided with a silencer positioning portion when a silencer is inserted into an inner wall surface of a photosensitive drum.
[0017]
Another object of the present invention is to provide a damping member automatic insertion device capable of setting a suitable clearance between the shaft of the silencer positioning portion and the silencer when the silencer is inserted into the inner wall surface of the photosensitive drum. It is in.
[0018]
Another object of the present invention is to provide an automatic insertion device for inserting a silencer into the inner wall surface of a photosensitive drum, so that dust generated by frictional contact between the photosensitive drum and the silencer due to insertion does not adhere to the surface of the photosensitive drum. The object is to provide a vibration member automatic insertion device.
[0019]
Another object of the present invention is to provide an automatic vibration damping member insertion device that confirms the presence / absence of a silencer inserted in a photosensitive drum and confirms the insertion position.
[0021]
[Means for Solving the Problems]
In order to achieve the above object, the first aspect of the present invention provides an inner wall surface of a cylindrical photosensitive drum. To A method of inserting a cylindrical damping member having a lit, wherein the damping member is positioned on the fixed side so that an end portion of the damping member faces upward, and then the photosensitive drum is moved from above. The damping member inserting method is characterized in that the damping member is inserted into the photosensitive drum in a skewered state only by being lowered toward the end of the damping member.
[0023]
According to a second aspect of the present invention, there is provided an inner wall surface of a cylindrical photosensitive drum. To A device for inserting a cylindrical damping member having a lit, wherein the damping member transporting means for transporting the damping member to a positioning position and the end of the transported damping member facing upward Positioning means for positioning the damping member and the photosensitive drum only by holding the photosensitive drum and lowering the photosensitive drum from above toward the end of the positioned damping member. An automatic damping member insertion device comprising: a photosensitive drum transport robot for inserting the damping member in a skewered state therein; and a damping member insertion confirmation unit.
[0024]
Also, Claim 3 The invention of Claim 2 In the automatic insertion device for a vibration damping member according to claim 1, the photosensitive drum transport robot includes: During the period from the start of the operation to the return to the origin, the vibration damping member insertion process is performed with only one gripping of the photosensitive drum. It is a robot.
[0025]
Also, Claim 4 The invention of Claim 3 In the vibration damping member automatic insertion device described in (1), the robot stops operation for 0.2 seconds or more between the insertion operation of the photosensitive drum and the extraction operation immediately thereafter.
[0026]
Also, Claim 5 The invention of Claim 3 In the vibration damping member automatic insertion device according to claim 1, the robot includes: , System Vibration member insertion process And the photosensitive drum transfer process in sequence It can be done.
[0027]
Also, Claim 6 The invention of Claim 2 The vibration damping member automatic insertion device according to claim 1, wherein the vibration damping member conveying means includes a vibration damping member supply and alignment means for aligning the vibration damping members, a conveying means for conveying the aligned vibration damping members, and a conveyed vibration damping member. Direction detection means for detecting the direction of the vibration member, and positioning supply means for supplying the vibration damping member whose direction has been detected to the positioning unit; The Configured with And Direction alignment means for aligning the direction of the damping member based on the information detected by the direction detection means; ,And, The orientation detection alignment means includes A taper is provided on the outer diameter of either end In the middle of supplying the damping member, measure the outer diameter of one end of the damping member, recognize the orientation of the damping member by comparing the measured outer diameter value with a preset value, The insertion direction is made constant by inverting the alignment direction according to the direction.
[0030]
Also, Claim 7 The invention of Claim 6 The vibration damping member automatic insertion device according to claim 1, wherein when measuring an outer diameter of one end of the vibration damping member, the vibration damping member Reduce the diameter of the vibration damping member so that the slit is closed. A means for pressing in the radial direction is provided.
[0031]
Also, Claim 8 The invention of Claim 6 In the automatic insertion device for a damping member according to claim 4, the positioning member for the damping member includes: The damping member conveyed by the damping member conveying means in a state where the longitudinal direction is parallel to the horizontal direction is rotated 90 degrees so that the end of the damping member faces upward. It is characterized by comprising a shaft having a 90-degree turning mechanism.
[0034]
Also, Claim 9 The invention of Claim 2 In the automatic vibration damping member insertion apparatus described above, there is provided means for blowing air onto the photosensitive drum from the oblique upper side of the photosensitive drum toward the insertion portion when the vibration damping member is inserted.
[0036]
Also, Claim 10 The invention of Claim 9 In the automatic insertion device of the vibration damping member described in The air is clean air; A high-speed static eliminator that adds generation of air ions to the clean air is provided.
[0037]
Also, Claim 11 The invention of Claim 9 or Claim 10 The automatic insertion device for a damping member according to claim 1, further comprising suction means for sucking from below the insertion portion when the damping member is inserted.
[0038]
Also, Claim 12 The invention of Claim 6 The vibration damping member automatic insertion device according to claim 1, wherein the vibration damping member insertion confirmation means includes a photosensitive drum positioning means and a vibration damping member confirmation sensor.
[0042]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 to 3 show the principle of the insertion method of the present invention, FIG. 1 shows before insertion, FIG. 2 shows during insertion, and FIG. 3 shows after insertion.
[0043]
As shown in FIG. 1 to FIG. 3, the photosensitive drum 1 gripped by the gripping tool 3 is lowered from directly above the silencer 2 placed with the insertion introducing portion 2 a vertically upward by the positioning tool 4, and in a skewered state. insert. In the present embodiment, the case of insertion from the vertical direction is shown as an example, but the insertion direction is not limited to this.
[0044]
FIG. 4 shows a layout diagram of a silencer automatic insertion device according to an embodiment of the present invention.
The photosensitive drum 1 is placed in the supply material handle 14 and positioned at the position shown in the figure. The silencer 2 is randomly placed in the supply alignment device 6, aligned in a horizontal row, and supplied to the conveyor 7. The supply alignment method includes a cut-out method using an elevating mechanism and a supply method in which a large number of claws are attached to the outside of an endless caterpillar and rotated, and the latter is adopted in this embodiment. The silencer 2 is sent to the direction detecting / aligning device 8 by the conveyor 7 and detects the direction of the insertion introducing portion 2a. With the air cylinder 30 (see FIG. 5) pressed from directly above and the slit 2c (see FIG. 5) closed, the outer diameter of the tip is measured from the horizontal direction with a laser displacement sensor (made by OMRON). The direction of the insertion introduction part 2a is recognized by comparing the measured result with a preset value (minimum outer diameter other than the insertion introduction part 2a of the silencer 2). Based on the recognized result, the 90-degree rotation device 20 determines the rotation direction, and sends it to the positioning supply device 9 so that the insertion introduction part 2a is behind the traveling direction. In this embodiment, the 90 ° rotation device 20 is employed because the conveyance layout changes its direction by 90 °, but a rotation device having an arbitrary angle can be used depending on the layout. The silencer 2 in which the direction sent to the positioning supply device 9 becomes constant is put in the shaft 10a of the positioning device 10 that stands by in a horizontal state. As a means for putting in the positioning shaft, a conveyor, a conveyance cylinder with a chuck, or the like can be considered. In this embodiment, the latter with high reliability is adopted. When the silencer 2 enters the shaft 10a, the shaft 10a turns 90 degrees to be vertically upward, and the silencer 2 is also vertically upward to complete preparation for insertion. At this time, the silencer 2 naturally has the insertion introducing portion 2a on the upper side.
[0045]
The clearance c = (d1-d) between the outer diameter d of the shaft of the positioning tool 4 and the inner diameter d1 (see FIG. 3) of the silencer 2 when inserted into the cylindrical photosensitive drum 1 is 1.2 mm. The difference between the inner diameter D of the photosensitive drum 1 and the maximum outer diameter D1 of the distal end of the insertion guide in the free state of the silencer 2 is (D−D1) = 2.0 mm, and the photosensitive drum transport robot 11 grips the photosensitive drum 1. The insertion position accuracy at the time is ± a, the repeated stop position accuracy at the insertion position of the shaft of the positioning tool 4 is ± b (a + b) = 0.4 mm, and c satisfies the following formula (I).
(D−D1)>c> (a + b) (I)
[0046]
In parallel with the supply operation of the silencer 2 described above, the photosensitive drum transport robot 11 takes the photosensitive drum 1 from the origin position to the supply material handler 14 and holds and positions one photosensitive drum vertically downward. Move just above the shaft of the device 10. Since the silencer 2 is already on the shaft and is waiting in the vertical upward direction (see FIG. 1), the photosensitive drum transport robot 11 moves vertically downward from the position to place the silencer 2 in the photosensitive body as shown in FIG. The drum 1 is temporarily stopped after being skewered on the inner wall surface.
[0047]
The stop time at this time must be at least 0.2 seconds. If it is less than that, the silencer insertion operation is influenced by the pulling operation of the photosensitive drum transport robot 11, and many insertion errors (silencer remains on the shaft) occur frequently. In the present embodiment, the photosensitive drum transport robot 11 is stopped for 0.3 seconds and then lifted as shown in FIG. 3 to move to the photosensitive drum transfer unit 15 and onto the jig of the assembly line conveyor 18. The photosensitive drum 1 to which the silencer 2 is attached is transferred and returned to the original position (the photosensitive drum transfer process and the silencer insertion process are simultaneously performed by one chuck and one cycle operation of the photosensitive drum transport robot).
[0048]
FIG. 6 is a diagram showing an example of an apparatus that reliably prevents dust generated by frictional contact between the photosensitive drum and the silencer from adhering to the surface of the photosensitive drum.
At the same time as the photosensitive drum transport robot 11 starts the insertion operation, air ions are generated by the high-speed static eliminator (manufactured by Keyence) 41 from the three outlets 40 obliquely upward in the circumferential direction of the photosensitive drum 1 toward the insertion portion. Spray the added clean compressed air. This spraying is performed until the insertion and extraction operations are completed. Below the insertion portion, there are a duct 13b connected to the suction device 13 and a suction port 13a, which sucks and discharges dust scattered by blowing clean compressed air. Reference numeral 19 denotes an operation range of the photosensitive drum transport robot, and reference numeral 42 denotes a clean compressed air supply source.
[0049]
The photosensitive drum 1 transferred to the photosensitive drum transfer section 15 and having the silencer 2 inserted therein is conveyed to the silencer insertion confirmation device 12 by the assembly line conveyor 18. Therefore, after the positions of the photosensitive drums 1 are made constant by the air cylinder driven photosensitive drum positioning devices 16 installed on both sides of the assembly line conveyor 18, silencers installed on both sides of the assembly line conveyor 18 are also used. The presence / absence and position of the confirmation sensor 17 (Keyence laser displacement sensor) is confirmed by matching the silencer insertion position.
[0050]
The silencer direction is determined by measuring the outer diameter d0 of the end portion of the silencer 2 in the free state shown in FIG. 5C, and measuring the outer diameter d0 of the end portion and the minimum outer diameter d3 other than the insertion introduction portion 2a measured in advance. This is a method of determination by comparison with (set value). When the measurement end is opposite to the insertion introduction portion 2a, the measured value is almost the same as the set value (d0≈d3), so that it can be easily discriminated. However, when the measurement end is the insertion introduction portion 2a, the outside of the silencer 2 Since the diameter is not a perfect circle with the slit 2c, the value of d0 of the insertion introduction portion 2a is a value from the maximum d1 to the minimum d2 depending on the measurement direction (see FIG. 5B). At this time, it cannot be determined that the comparison reference value d3 is in the range of d1>d3> d2. In the present embodiment, the pressure is applied from the outside perpendicular to the end measurement direction 31 of the silencer 2 at the time of determination with the air cylinder 30 (see FIG. 5A), and measurement is performed with the slit 2c closed. Then, the relationship between d1, d2, and d3 is d3>d1> d2 and can be discriminated.
The silencer 2 used in the present embodiment has an insertion introducing portion 2a at one end, an angle α = 10 degrees, a length s = 8 mm, and a shoulder R = 3 mm.
[0051]
According to the above embodiment, as a method of inserting the silencer 2 into the photosensitive drum 1, the silencer 2 is positioned on the positioning tool 4 on the fixed side, and then the photosensitive member is directed toward the insertion introduction portion 2 a at the end of the silencer 2. Since the end opening of the drum 1 is approached and the silencer 2 is inserted into the photoreceptor drum 1 in a skewered state, it is not necessary to handle the silencer 2 whose shape in the free state is unstable and difficult to handle. become.
[0052]
Further, since the silencer 2 is inserted from the lower end portion of the photosensitive drum 1, dust generated by frictional contact between the photosensitive drum 1 and the silencer 2 at the time of insertion hardly adheres to the surface 1 of the photosensitive drum.
[0053]
Further, when the photosensitive drum transport robot 11 is used for handling the photosensitive drum 1, the photosensitive drum transport robot 11 starts the operation from the origin and returns to the origin again (one cycle operation). By performing the process of inserting the silencer 2 without holding the body drum 1 only once (one chuck operation), the one-cycle operation time of the photosensitive drum transport robot 11 is shortened and the production efficiency is increased.
[0054]
Also, switching between an insertion operation (push-in operation) and a pull-out operation during the insertion operation of an automatic insertion device that grips the photosensitive drum 1 with the photosensitive drum transport robot 11 and inserts the silencer 2 into the inner wall surface of the photosensitive drum 1. If the time is less than 0.2 seconds, there is a high possibility of an insertion error (the silencer 2 remains on the shaft of the positioning tool 4). This occurs because the silencer 2 is moved by the insertion operation and does not stop completely, but the next pulling operation is started, so that the silencer 2 is not completely in close contact with the inner wall surface of the photosensitive drum. If the stop time of 0.2 seconds or more is taken, the silencer 2 is completely in close contact with the inner wall surface of the photosensitive drum, and there is no insertion error.
[0055]
Moreover, in the automatic insertion device of the silencer 2 of this embodiment, the insertion process of the silencer 2 and the conveyance process of the photosensitive drum 1 can be performed at the same time, and space saving and low cost can be achieved.
[0056]
Further, as a minimum component of the silencer automatic press-fitting device of the present embodiment, means for picking up and aligning the silencer 2 stored in a random manner (silencer supply and alignment device 6), the aligned silencer 2 as a direction detection unit (direction detection alignment device 8) ) (Conveying conveyor 7), means for measuring the outer diameter of the end of the silencer 2 to determine the direction and aligning in a certain direction (direction detection aligning device 8, 90 degree rotating device 20), in a certain direction Means for supplying the aligned silencers 2 to the positioning portion for insertion (positioning supply device 9), positioning means for the silencer 2 (positioning device 10), conveyance for holding the photosensitive drum 1 and inserting the silencer 2 in a skewered state Robot (photosensitive drum transport robot 11) and means for confirming the insertion of the silencer 2 (photosensitive drum positioning device 16, siren Check sensor 17) there is. If there is no one of these means, the silencer cannot be inserted and confirmed.
[0057]
In order to insert the silencer 2 into the photosensitive drum 1 in a skewered state, an insertion introducing portion (chamfering or taper) 2 a is required on the outer diameter of the end of the silencer 2. Without the insertion introduction part 2a, there is a high possibility that the end face of the photosensitive drum and the end face of the silencer will collide at the time of insertion. The directionality does not matter if the insertion introduction part 2a can be attached to both end faces of the silencer 2. However, since the silencer 2 having the slit 2c as in the present embodiment is made by injection molding, It is difficult to attach the insertion introducing portion 2a (the product cannot be discharged from the mold). Therefore, a process of making the insertion introducing portion 2a of the silencer 2 on the insertion side is necessary.
[0058]
As a method of discriminating the insertion introduction portion side of the silencer 2, a method of measuring and comparing the outer diameter of the silencer end portion is reliable and simple.
Since the silencer 2 has a slit 2c in the silencer 2, the outer diameter is not a perfect circle but an ellipse. Therefore, if the measurement is performed as it is, the measurement width of the outer diameter in the circumferential direction is large and cannot be compared. Therefore, when measuring by pressing the silencer 2 when measuring as in this embodiment, , Su With lit 2c closed , Measure As a result, the measurement width becomes smaller and the comparison can be made.
[0059]
The silencer 2 can be easily transported horizontally (sideways). In order to supply the silencer 2 conveyed horizontally to the shaft of the positioning tool 4 provided in the positioning device 10, it is easier to make the shaft horizontal. However, when the silencer is inserted, it is easier for the silencer 2 to be vertical because the operation range of the photosensitive drum transport robot 11 can be narrowed. Therefore, the shaft of the positioning tool 4 is provided with a 90-degree turning function so that the equipment is simplified by being horizontal when the silencer is supplied and vertical when inserting the silencer.
[0060]
Position accuracy in the positioning part of the silencer 2 is a very important factor in the insertion process. In this embodiment, since the silencer 2 is inserted into the positioning shaft, the gap c between the inner diameter of the silencer 2 and the outer diameter of the shaft is important. Position accuracy ± a with respect to the insertion position when the photosensitive drum transport robot 11 comes to the insertion site while holding the photosensitive drum 1 within the gap c, repeat position accuracy ± b with respect to the insertion position of the positioning portion shaft, In terms of drum inner diameter D and silencer insertion leading end maximum outer diameter D1
(D−D1)>c> (a + b)
Must be in the range. If c> (D−D1) or c <(a + b), the end surface of the photosensitive drum 1 and the end surface on the insertion side of the silencer 2 may collide at the time of insertion.
[0061]
In the present embodiment, since the silencer 2 is inserted into the photosensitive drum 1 from the lower end side of the photosensitive drum 1, dust generated by frictional contact between the photosensitive drum 1 and the silencer 2 is attached to the surface of the photosensitive drum. As described above, although it is difficult to do so, dust is still generated and may adhere to the vicinity of the lower end of the surface of the photosensitive drum.
Accordingly, simultaneously with the insertion, air is blown from the upper circumferential direction of the photosensitive drum 1 toward the insertion portion, and the generated dust is blown down to the lower side of the photosensitive drum to prevent the dust from adhering to the surface of the photosensitive drum. .
[0062]
Further, the air to be blown is cleaned, and the adhesion of dirt on the surface of the photosensitive drum by the air to be blown is prevented.
Further, air ions are generated in the clean air to be blown by the high-speed static eliminator 41 to prevent dust from adhering to the surface of the photosensitive drum due to static electricity.
Further, a suction device 13 is provided under the insertion portion to suck the generated dust and prevent the dust from adhering to the surface of the photosensitive drum.
In addition, the dust adhesion preventing effect is improved by combining the above dust adhesion prevention methods.
[0063]
The automatic insertion device for the silencer 2 requires confirmation of the silencer 2 inserted into the inner wall surface of the photosensitive drum 1 or confirmation when the insertion position accuracy of the silencer 2 is necessary. If the photosensitive drum positioning process and the insertion confirmation detection process proposed in this embodiment are performed in the same process, the request can be easily made. For example, only the insertion confirmation detection step causes the measurement origin to vary, so that the detection accuracy is lowered. If the photosensitive drum positioning step and the insertion confirmation detection step are performed in separate steps, the position of the photosensitive drum 1 moves during the movement between the steps. There is a possibility that the detection accuracy is lowered and a space is also required.
[0064]
In order to smoothly insert the silencer 2 into the inner wall surface of the photosensitive drum 1 with the automatic insertion device, it is necessary to make the end of the silencer 2 have a special shape (providing the insertion introducing portion 2a). In simple chamfering, when the silencer 2 touches the inner wall surface of the end of the photosensitive drum 1 at the time of insertion, the silencer 2 does not follow the subsequent insertion and is stopped. In order to solve this problem, it is necessary to tighten the positioning accuracy when gripping the photosensitive drum and the positioning accuracy of the silencer insertion portion so that the silencer 2 does not touch the inner wall surface of the end portion of the photosensitive drum 1. Difficult, cost increases even if implemented. As shown in this proposal, at least one end of the silencer 2 is provided with an insertion introducing portion 2a, and the angle α is set to 5 degrees or more and 30 degrees or less so that positioning accuracy does not need to be strict and insertion can be performed smoothly. become. If the angle α is less than 5 degrees, the introduction effect is small unless the length s is lengthened. As a result, the overall length of the silencer is increased, and if it exceeds 30 degrees, the angle is too steep to reduce the introduction effect. Further, if the insertion introduction shoulder portion is not R-shaped (smoothly curved shape), there is a problem that the inner wall surface of the photosensitive drum 1 is easily caught at the time of insertion, and it is likely to become a generation source of dust due to insertion friction.
[0065]
The present invention is not limited to the above embodiment. That is, various modifications can be made without departing from the scope of the present invention.
[0066]
【The invention's effect】
As described above, claims 1 and 2 According to this invention, since the shape in the free state is unstable and it is not necessary to handle the damping member that is difficult to handle, it can be inserted into the photosensitive drum, so that the insertion device can be simplified.
[0067]
Claims 1, 2 According to this invention, since the photosensitive drum is positioned above the insertion position when the damping member is inserted, dust generated by frictional contact between the photosensitive drum and the damping member adheres to the surface of the photosensitive drum. Hateful.
[0068]
Also, Claim 3 According to this invention, the one-cycle operation time of the photosensitive drum transport robot is shortened and the production efficiency is increased.
Also, Claim 4 According to the present invention, the damping member is completely in close contact with the inner wall surface of the photosensitive drum, and there is no insertion error.
Also, Claim 5 According to this invention, space saving and low cost can be achieved.
Also, Claim 6 According to this invention, insertion of a damping member and insertion confirmation can be performed.
[0069]
Also, Claim 6 According to this invention, since the direction of the damping member can be made uniform, the damping member provided with the insertion introducing portion can be used.
Also, Claim 6 According to this invention, it is possible to reliably and easily determine the direction of the damping member.
Also, Claim 7 According to this invention, even if it is the damping member which has a slit and is not a perfect circle shape, discrimination | determination of the direction of a damping member can be performed reliably and easily.
Also, Claim 8 According to this invention, the vibration control member can be made horizontal during supply and vertical during insertion, so that the operating range of the robot can be narrowed, and the equipment can be simplified.
[0070]
Also, Claim 9 According to this invention, dust generated at the time of insertion can be blown down to the lower side of the photosensitive drum, so that dust can be reliably prevented from adhering to the surface of the photosensitive drum.
[0071]
Also, Claim 10 According to the invention, it is possible to prevent the dirt from adhering to the surface of the photosensitive drum by the air to be blown.
Also, Claim 10 According to this invention, it is possible to prevent dust from adhering to the surface of the photosensitive drum due to static electricity.
Also, Claim 11 According to this invention, the generated dust can be sucked to prevent the dust from adhering to the surface of the photosensitive drum.
Also, Claim 12 According to this invention, it is possible to reliably and easily perform insertion confirmation detection of the damping member.
[Brief description of the drawings]
FIG. 1 is a diagram showing the principle of an insertion method of the present invention and shows a state before insertion.
FIG. 2 is a diagram showing the principle of the insertion method of the present invention, and is a diagram showing the time of insertion.
FIG. 3 is a view showing the principle of the insertion method of the present invention and showing the state after insertion.
FIG. 4 is a layout diagram of a silencer automatic insertion device according to an embodiment of the present invention.
FIG. 5 is a diagram showing a silencer direction determination method according to an embodiment of the present invention.
FIG. 6 is a diagram illustrating an example of an apparatus for reliably preventing dust generated by frictional contact between the photosensitive drum and the silencer from adhering to the surface of the photosensitive drum according to an embodiment of the present invention.
[Explanation of symbols]
1 Photosensitive drum
2 Silencer (damping member)
2a Insertion introduction part
2c slit
3 Vibration control device
4 Positioning tool
6 Silencer supply alignment device
7 Conveyor
8 direction detection alignment device
9 Positioning and feeding device
10 Positioning device
11 Photosensitive drum transport robot
12 Silencer insertion confirmation device
13 Suction device
14 Photosensitive drum supply material handling
15 Photosensitive drum transfer section
16 Photosensitive drum positioning device
17 Silencer confirmation sensor
18 Assembly line conveyor
19 Operating range of photoconductor transport robot
20 90 degree rotating device
30 Air cylinder

Claims (12)

A method of inserting a damping member cylindrical shape having slits on the inner wall surface of the cylindrical photosensitive drum,
After positioning the damping member on the fixed side so that the end of the damping member faces upward, the photosensitive drum is only lowered by dropping it from above toward the end of the damping member. A method for inserting a damping member, wherein the damping member is inserted into a body drum in a skewered state. An apparatus for inserting a damping member cylindrical shape having slits on the inner wall surface of the cylindrical photosensitive drum,
A damping member conveying means for conveying the damping member to a positioning position;
Positioning means for positioning the damping member so that the end of the conveyed damping member faces upward;
By simply holding the photosensitive drum and lowering the photosensitive drum from above toward the end of the positioned damping member, the damping member is inserted into the photosensitive drum in a skewed state. A photosensitive drum transfer robot to be inserted;
Damping member insertion confirmation means;
An automatic insertion device for a vibration damping member, comprising:   The photosensitive drum transport robot is a robot that performs the step of inserting the damping member while holding the photosensitive drum only once during the operation from the start of the operation to the return to the origin. The automatic insertion device for a vibration damping member according to claim 2, wherein the vibration damping member is automatically inserted.   4. The automatic insertion device for a vibration damping member according to claim 3, wherein the robot stops the operation for 0.2 seconds or more between the insertion operation of the photosensitive drum and the extraction operation immediately thereafter.   The automatic insertion device for a vibration damping member according to claim 3, wherein the robot can sequentially perform a vibration damping member insertion step and a photosensitive drum transfer step in order. The damping member conveying means includes a damping member supply and alignment means for aligning the damping members, a conveying means for conveying the aligned damping members, a direction detecting means for detecting the orientation of the conveyed damping member, And a positioning supply means for supplying the vibration damping member whose orientation is detected to the positioning unit, and
Direction alignment means for aligning the direction of the damping member based on the information detected by the direction detection means, and
The direction detecting and aligning means measures the outer diameter of one end of the damping member while supplying the damping member having a taper at one end outer diameter, and measures the outer diameter. The damping direction according to claim 2, wherein the direction of the damping member is recognized by comparing the value with a preset value, and the direction of insertion is made constant by inverting the alignment direction according to the direction. Automatic insertion device for vibration member.   When measuring the outer diameter of one end of the vibration damping member, the vibration damping member is provided with means for pressing the vibration damping member in a radial direction so that the vibration damping member is reduced in diameter and the slit is closed. The automatic insertion device for a damping member according to claim 6.   The vibration damping member positioning means is arranged so that the vibration damping member conveyed by the vibration damping member conveying means in a state where the longitudinal direction thereof is parallel to the horizontal direction is such that the end of the vibration damping member faces upward. The automatic insertion device for a damping member according to claim 6, comprising a shaft having a 90-degree turning mechanism for turning the member by 90 degrees.   The automatic insertion device for a damping member according to claim 2, further comprising means for blowing air onto the photosensitive drum from an obliquely upper side of the photosensitive drum toward the insertion portion when the damping member is inserted. . The air is clean air, automatic insertion device of the vibration damping member according to the prior Symbol clean air and a high-speed static eliminator for adding the occurrence of air ions to claim 9, characterized. The automatic insertion device for a damping member according to claim 9 or 10 , further comprising suction means for sucking from below the insertion portion when the damping member is inserted. 7. The automatic damping member insertion apparatus according to claim 6 , wherein the damping member insertion confirmation means includes a photosensitive drum positioning means and a damping member confirmation sensor.

Images