JPH088061Y2 - Roller polishing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Purpose of the Invention 1 Field of Industrial Application The present invention is a roller, particularly a core roller having a tapered surface on at least a part of its outer peripheral surface, and a roller formed on the outer peripheral surface of the core roller by a coating method. And a coating layer that follows the shape of the outer peripheral surface of the roller.

2. Related Art Conventionally, as this type of roller, there is known a fixing roller of an electrophotographic copying machine having a taper portion at both ends of a main body portion.

In manufacturing such a fixing roller, for example, a sheet of a silicone rubber compound is attached to the outer peripheral surface of the core roller, and then a compression molding method is applied to carry out vulcanization at the same time as molding the silicone rubber. A method is used in which a coating layer made of rubber is obtained, and then the coating layer is finished using an NG grinding machine, a copying cylinder grinding machine, or the like so that the coating layer has a predetermined shape, size, and surface roughness.

3 Problem to be Solved by the Invention However, according to the above method, when an extremely thin coating layer is required, it is very difficult to meet the requirement, and further, the yield of the material is low.

Therefore, in order to easily obtain an extremely thin coating layer, a dipping method that can obtain a highly accurate core roller having a perfect circular surface and a tapered surface by an NC lathe etc. and easily form a uniform thin coating layer on the core roller Apply a coating method such as to form a thin coating layer on the outer peripheral surface of the core roller that has a uniform thickness following its shape,
Then, it is conceivable that the thin coating layer is subjected to polishing to finish it to a predetermined surface roughness.

In this case, since it is necessary to polish the round surface and the tapered surface of the coating layer in the order of micron, it is inefficient to perform the polishing manually, and in addition, the surface roughness is constant. Obtaining a coating layer becomes extremely difficult.

Further, in the conventional polishing apparatus, it is difficult to carry out automatic polishing uniformly along with the perfect circular surface without damaging the uniform thin coating layer on the tapered surface.

In view of the above problems, the present invention provides the above-mentioned polishing apparatus capable of automatically and uniformly polishing a coating layer formed by a coating method and having a tapered surface on at least a part of its outer peripheral surface. The purpose is to do.

B. Configuration of the Invention 1 Means for Solving the Problems A roller polishing device of the present invention comprises a core roller (2) having a tapered surface on at least a part of its outer peripheral surface, and an outer peripheral surface of the core roller (2). A polishing device for a roller (1) having a coating layer (3) formed and following the shape of the outer peripheral surface,
In the gripping position, the roller (1) is moved along its axis (xx)
Rotatably gripped around, also the gripping member in the release position to permit disengagement of said roller (1) (8), first rotary drive member for rotating the rollers of the grasping condition (1) (9 ₁₎
A supporting member (10 ₁ ) capable of reciprocating in the axis (xx) direction of the roller (1) in the gripped state, and the supporting member (10 ₁ ).
A reciprocating drive member (11) for reciprocating the roller and a supporting member (10 ₁ ) are rotatable around a rotation axis perpendicular to the axis (xx) of the roller (1) and on the outer peripheral surface of the roller (1). and headed movably supported cushioned abrasive member (12), and a second rotary drive member for rotating the該研friction member (12) (9 _2), to advance the abrasive member (12) grasping Of the roller (1) in a state of being pressed against the outer peripheral surface of the roller (1) with a constant contact pressure, and an operating member (13) for retracting the polishing member (12) to separate it from the outer peripheral surface of the roller (1). The apparatus is characterized by having the following requirements: (Y01) A pneumatic actuation cylinder (50) for moving the polishing member (12) forward and backward, and pressurized air when the polishing member (12) moves forward. conduit introduced into the pneumatic actuating cylinder (50) (62 ₁₎ in It said actuating member having a means for holding the pressure of the pressurized air to a predetermined value (65, 66 _1, 67,63) (13).

2 by gripping action roller (1) to the gripping member (8) is rotated by its roller (1) a first rotary drive member (9 _1), also abrasive member having the cushioned by the actuation member (13) (1
2) is advanced along the rotation axis direction of the polishing member (12) perpendicular to the axis (xx) of the roller (1) and pressed against the outer peripheral surface of the roller (1) and the polishing member (12). The second
Rotated by the rotary drive member (9 _2), abrasive member (1 for roller (1) outer peripheral surface is moved support member under this situation (10 ₁₎ the axis of the roller (1) to (x-x) direction
By keeping the contact pressure of 2) constant, the coating layer (3)
The entire outer peripheral surface, and thus, if the outer peripheral surface has a perfect circular surface and a tapered surface, both surfaces are evenly ground.

Therefore, the position of the polishing member (12) with respect to the roller (1) and the contact pressure are adjusted by adjusting the axis (x) of the roller (1).
The reciprocating drive member (11) for reciprocating the supporting member (10 ₁ ) reciprocating in the −x) direction, and the polishing member (12) supported by the supporting member (10 ₁ ) to move back and forth to move the roller. (1) With an operating member (13) that presses against the outer peripheral surface with a constant contact pressure or separates from the outer peripheral surface of the roller (1)
It can be done by one member.

Further, means for holding the pressure of the pressurized air in the pipe line (62 ₁ ) for introducing the pressurized air into the pneumatic working cylinder (50) at a predetermined value when the polishing member (12) advances (65, 66 ₁ , 6
7,63) can be easily constructed with commercially available air circuit components such as pressure reducing valves and relief valves. By holding the pressure of the pressurized air at a predetermined value, the polishing member (12) can be easily pressed against the outer peripheral surface of the roller (1) in a gripping state with a constant contact pressure.

3 Embodiment In FIGS. 1A and 1B, a fixing roller 1 of an electrophotographic copying machine as a roller is a metal core roller 2 and an ultrathin elastic coating layer formed on the outer peripheral surface of the core roller 2 by a coating method. 3 and 3. The coating layer 3 is made of silicone rubber, fluororubber or the like. The core roller 2 has a main body 4 having an equal diameter.
And the main body 4 is connected to both ends of the main body 4 respectively.
A pair of first and second taper portions 5 that spreads outwardly toward the outside
1, 52 and a pair of first and second boss portions 61, 62 projecting from the end surfaces of the tapered portions 51, 52, respectively.

The coating layer 3 is applied and formed by a method of immersing a part of the outer peripheral surface of the core roller 2 in a coating liquid and rotating the core roller 2 around the axis thereof.
The core roller 2 has a uniform thickness following the shape of the outer peripheral surface, and the outer peripheral surface of the coating layer 3 is a perfect circular surface 3a corresponding to the main body portion 4 and the first and second tapered portions 51, which are continuous with both ends thereof. It is formed by first and second tapered surfaces 3b and 3c for 52. The coating layer 3 is finished to have a predetermined surface roughness by polishing.

2 to 5 show a polishing apparatus used for polishing the coating layer 3 to obtain the fixing roller 1. The apparatus has a base 7, on which various members are arranged as described below.

That is, as the various members, the fixing roller 1 is provided at the grip position.
A gripping member 8 for rotatably gripping the fixing roller 1 about its axis xx, and permitting the fixing roller 1 to be disengaged in the release position;
First rotation driving member for rotating the fixing roller 1 in the gripped state
91, a lower support base 101 as a support member capable of reciprocating in the axis xx direction of the fixing roller 1 in a gripping state, a reciprocating drive member 11 for reciprocating the lower support base 101, and the lower support base 101. A polishing member (12) which is provided so as to be movable back and forth with respect to the outer peripheral surface of the fixing roller (1) in a gripped state, and rotatable around an axis parallel to the moving direction, and a second rotating the polishing member (12)
The rotation driving member 92 and the operating member 13 that advances the polishing member 12 to press it against the outer peripheral surface of the fixing roller 1 with a constant contact pressure, and retracts the polishing member 12 to separate it from the outer peripheral surface of the fixing roller 1. Applicable

Next, the configuration and operation of each member 8 to 12 will be described in detail.

(I) Gripping member 8 A headstock 14 and a tailstock 15 are installed on the upper surface of the substrate 7 so as to face each other, and the headstock 14a of the headstock 14 and the tailstock 15a of the tailstock 15 are installed.
And are coaxially arranged with their tips facing each other. The tailstock shaft 15a is connected to a feed screw shaft 18 via a bearing housing 17, and by rotating a handle 19 attached to the feed screw shaft 18, the tailstock shaft 15a moves back and forth with respect to the main shaft 14a.

In the above structure, the tailstock shaft 15a is retracted from the main shaft 14a, non-rotatably engaged with the first boss portion 61 of the center roller 2 and the main shaft 14a, and is advanced toward the second boss portion 62 toward the second tailstock shaft. The fixing roller 1 is rotatably held by the holding member 8 by engaging 15a.

(II) First rotation drive member 91 An electric motor 21 having a drive shaft 20 parallel to the main shaft 14a is installed on the upper surface of the base 7, and a pulley 22 fitted to the drive shaft 20 is installed.
The transmission belt 24 is suspended around the pulley 23 fitted to the main shaft 14a.

As a result, when the electric motor 21 is driven to rotate, the pulley
The main shaft 14a rotates via 22, 23 and the transmission belt 24, and thus the fixing roller 1 rotates.

(III) Lower support base 101 On the side of the tailstock 15, a pair of lower guide rods 251 parallel to the tailstock shaft 15a are laid on the upper surface of the base 7 via a pair of supports 26, and both lower guides are provided. A plurality of sliders 27 on the lower surface of the lower support base 101 are slidably fitted to the rod 251.

As a result, the lower support base 101 is guided by both lower guide rods 251 and reciprocates.

(IV) Reciprocating drive member 11 Between both lower guide rods 251, a feed screw shaft 28 parallel to each lower guide rod 251 is rotatably laid on the upper surface of the base 7 via a pair of supports 29. A protruding end of the feed screw shaft 28 from one support 29 is connected to a drive shaft 32 of a reversible electric motor 31 via a coupling 30, and the electric motor 31 is attached to the base 7 via a support bracket 33. To be A nut member 34 is fixed to the lower surface of the lower support base 101, and the nut member 34 is screwed onto the feed screw shaft 28.

As a result, when the electric motor 31 is driven in the forward or reverse direction, the lower support base 101 moves forward or backward via the feed screw shaft 28 and the nut member 34.

(V) Polishing member 12 As clearly shown in FIG. 5, the polishing member 12 includes a holding plate 35, a holder 37 having a rotary shaft 36 projecting from one surface of the holding plate 35, and a holder 37 on the other surface of the holding plate 35. It consists of an abrasive material 39 adhered via a double-sided adhesive tape 38. The abrasive 39 is a relatively thick synthetic fiber nonwoven fabric having a cushioning property, in which abrasive grains are dispersed and adhered via an adhesive.

A pair of upper guide rods 252 extending in a direction intersecting with the lower guide rods 251 are laid on the upper surface of the lower support base 101 in parallel with each other via the pair of support bodies 40, and the upper support bases 102 are attached to both upper guide rods 252. A plurality of sliders 41 on the lower surface are slidably fitted.

A bearing cylinder 42 is attached to one side of the upper surface of the upper support base 102 in parallel with each upper guide rod 252, and the rotating shaft 36 of the polishing member 12 is rotatably supported by the bearing cylinder 42. The abrasive 39 is located on the gripping member 8 side.

As a result, the polishing member 12 can be moved back and forth with respect to the outer peripheral surface of the fixing roller 1 in the gripped state via the upper support 102 and the like.

(VI) Second rotation drive member 92 The rotary shaft 36 of the polishing member 12 is provided on the other side of the upper support 102.
An electric motor 43 having a drive shaft 44 parallel to
A transmission belt 47 is suspended between a pulley 45 fitted on the drive shaft 44 and a pulley 46 fitted on the rotary shaft 36.

As a result, when the electric motor 43 is rotationally driven, the pulley
The polishing member 12 rotates via 45, 46 and the transmission belt 47.

(VII) Actuating member 13 As clearly shown in FIG. 3, the support bracket 48 is attached to the lower support base 101 on the side opposite to the side where the abrasive 39 is present, and the tip of the horizontal piston rod 49 is attached to the upper surface of the support bracket 48. A pneumatic actuation cylinder 50 in which the above is connected to the upper support 102 is installed.

The pneumatic circuit 51 of the working cylinder 50 is configured as follows.

That is, the main pipeline 54 connecting the air pressure source 52 and the direction switching valve 53
In addition, the on-off valve 55, the filter 56, the pressure reducing valve
57, a pressure gauge 58 and a lubricator 59 are provided. In the working cylinder 50, the first introduction port 601 for introducing pressurized air for extending the piston rod 49 is connected to the first port 611 of the direction switching valve 53 via the first branch pipe line 621, and the piston The second introduction port 602 for introducing pressurized air for contracting the rod 49 is connected to the second port 612 of the directional control valve 53 via the second branch pipe line 622.

A pressure reducing valve 63 for controlling the supply pressure to the working cylinder 50 from the direction switching valve 53 side to the first branch pipe 621 in order to be constant, and a pressure gauge.
64 and orifice 65 are interposed. Also the first branch line
In 621, between the direction switching valve 53 and the pressure reducing valve 63, and the pressure gauge 6
The 4 and the orifice 65 are connected via the first bypass 661. The first bypass 661 includes a one-way valve 67 that allows only an air flow from the orifice 65 side to the direction switching valve 53 side.
Is installed. Further, in the first branch path 621, the connection portion of the first bypass 661 and the orifice 65, and the orifice 65 and the first introduction port 601 are connected via the second bypass 661. The second bypass 662 is provided with a one-way valve 68 that allows only the flow of air from the pressure reducing valve 63 side to the first introduction port 601 side.

In the above configuration, when the second port 612 is connected to the orifice 69 and the first port 611 is connected to the pressure reducing valve 63 by the switching operation of the direction switching valve 53, the pressurized air of the pressure source 52 causes the pressure air of the pressure source 52 to be reduced and the second bypass valve. Work cylinder 50 via 662
Since the piston rod 49 is extended by being introduced into the first introduction port 601 of the above, the upper support 102, and therefore the polishing member 12, is advanced toward the fixing roller 1 in the gripped state, and the polishing material 39 is moved to the outer periphery of the fixing roller 1. Can be pressed against the surface.

At this time, the contact pressure of the polishing member 12 against the outer peripheral surface of the fixing roller 1 is controlled to a constant value set by the pressure reducing valve 63. That is, when the pressure of the first introduction port 601 becomes higher than the set value of the pressure reducing valve 63, the increased pressure of the first introduction port 601 is discharged to the atmosphere from the pressure reducing valve 63 via the orifice 65 and the first bypass 661. A means for holding the pressure of the pressurized air introduced into the first branch pipe 62 ₁ , the first introduction port 60 _{1 and the} like at a predetermined value is constituted by the elements indicated by the reference numerals 65, 66 ₁ , 67, 63 and the like. Has been done. On the other hand, if the pressure of the first introduction port 601 becomes lower than the set value of the pressure reducing valve 63, the reduced pressure of the first introduction port 601 will be the same as the above with the pressurized air by the pressure reducing valve 63 and the second bypass 66.
It is compensated by being introduced into the first introduction port 601 via 2.

When the first port 611 is communicated with the orifice 70 and the second port 612 is connected to the second introduction port 602 of the working cylinder 50 by the switching operation of the directional control valve 53, the pressurized air of the pressure source 52 becomes the second branch line. 2nd of working cylinder 50 via 622
It is introduced into the introduction port 602, which allows the piston rod 4
As the 9 contracts, the upper support 102, and thus the abrasive member
The abrasive material 39 can be separated from the outer peripheral surface of the fixing roller 1 by retracting 12 from the fixing roller 1. At this time, the air on the side of the first introduction port 601 is discharged through the orifice 65, so that the sharp backward movement of the polishing member 12 is suppressed.

 Next, the polishing work of the fixing roller 1 will be described.

The coating liquid such as silicone rubber applied to the core roller 2 is heat-dried, and therefore the coating layer 3 has rubber-like elasticity. Further, the polishing member 12 is in the retracted position and has stopped rotating.

The fixing roller 1 is gripped by the gripping member 8 and the fixing roller 1 is rotated by the first rotation driving member 91.

The lower support 101 is moved by the operation of the reciprocating driving member 11 so that the abrasive material 39 of the polishing member 12 faces the outer peripheral surface of the second taper surface 3c of the coating layer 3 on the large-diameter end side.

The second rotary drive member 92 is operated to rotate the polishing member 12.

The polishing member 1 is operated together with the upper support plate 102 by operating the operating member 13.
2 is moved forward, the abrasive material 39 is pressed against the second taper surface 3c, and the reciprocating drive member 11 is operated to move the abrasive member 12 through the lower support base 101 in the axial direction of the fixing roller 1 to the first taper surface.
Move to the large diameter end of 3b.

In the polishing work, the polishing member 12 has the second taper surface 3c.
When polishing the large diameter end side of, the contact pressure of the polishing member 12 against the large diameter end side is controlled to a constant pressure set by the pressure reducing valve 63.

Then, as the polishing member 12 reaches from the large diameter end side of the second tapered surface 3c to the small diameter end side, the first introduction port of the working cylinder 50
Although the pressure of 601 decreases, it is immediately sensed by the pressure reducing valve 63 and the reduced pressure is supplied to the first introduction port 601, whereby the piston rod 49 extends and the polishing member 12
Rubs against the second taper surface 3c with the same contact pressure as above.

In this manner, the entire outer peripheral surface of the coating layer 3, that is, the perfect circular surface 3a and the first and second tapered surfaces 3b and 3c are uniformly polished.

Moreover, since the abrasive material 39 having cushioning property is rubbed against the elastic coating layer 3, it is sufficient to prevent the abrasive material 39 from biting into the perfect circular surface 3a and the tapered surfaces 3b, 3c of the coating layer 3. The polishing efficiency can be improved by adapting it to the skin.

FIG. 6 shows another example of the polishing member 12, and the polishing material 39 is
A sponge rubber-like cushion body 71 adhered to the holding plate 35 via a double-sided adhesive tape 38, and a flexible abrasive body 72 adhered to the surface of the cushion body 71. Abrasive body 72 is made by dispersing abrasive grains on cloth or paper and adhering it through an adhesive.

The present invention is not limited to the fixing roller, but can be applied to polishing of other rollers, and the same can be applied to a non-tapered roller or a roller in which the entire roller is tapered.

C. Effect of the Invention According to the present invention, a core roller having a tapered surface on at least a part of the outer peripheral surface and a coating layer formed on the outer peripheral surface of the core roller by a coating method and following the shape of the outer peripheral surface are provided. In the provided roller, the entire coating layer can be automatically and efficiently abraded, so that the roller provided with the coating layer having a constant surface roughness can be stably provided.

[Brief description of drawings]

FIG. 1A is a front view of the fixing roller, FIG. 1B is a front view of the core roller, FIG. 2 is a plan view of the polishing device, and FIG. 3 is III-II in FIG.
Fig. 4 is a sectional view taken along line I-IV, Fig. 4 is a sectional view taken along line IV-IV in Fig. 2, Fig. 5 is a plan view of the polishing member, and Fig. 6 is a plan view of another example of the polishing member. xx: Axis, 1 ... Fixing roller (roller), 2 ...
Core roller, 3 ... coating layer, 3b, 3c ... first and second tapered surfaces, 51, 52 ... first and second tapered portions, 8 ... gripping member, 91,
92 …… first and second rotation driving members, 101 …… lower support base (supporting member), 11 …… reciprocating driving member, 12 …… polishing member, 13 ...
... Operating members

Claims (1)

[Scope of utility model registration request] 1. A core roller (2) having a tapered surface on at least a part of its outer peripheral surface, and a coating layer (3) formed on the outer peripheral surface of the core roller (2) and following the shape of the outer peripheral surface. A polishing device for a roller (1) provided, which grips the roller (1) rotatably around its axis (xx) in a gripping position, and disengages the roller (1) in a releasing position. an allowable gripping member (8), the reciprocating a first rotary drive member for rotating the rollers of the grasping condition (1) (9 _1), the axis (x-x) direction of the rollers of the grasping condition (1) enabling support member (10 _1), and the reciprocating members (11) for reciprocating said support member (10 _1), said support member (10 ₁₎ by the axis of the roller (1) (x-x) A cushion that is rotatable about a vertical rotation axis and is supported so as to be able to move forward and backward toward the outer peripheral surface of the roller (1). The sex of certain abrasive member (12),該研friction member (12) and the second rotary drive member for rotating the (9 _2), said rollers gripping state by advancing the abrasive member (12) (1) outer peripheral surface And a working member (13) for moving the polishing member (12) backward to separate the polishing member (12) from the outer peripheral surface of the roller (1). (Y01) A pneumatic working cylinder (50) for moving the polishing member (12) forward and backward, and a pneumatic working cylinder for applying pressurized air when the polishing member (12) advances. The operating member (13) having means (65, 66 ₁ , 67, 63) for holding the pressure of the pressurized air in the pipe (62 ₁ ) introduced into the (50) at a predetermined value.