JP4966774B2 - Coating material spreading device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for spreading a coating material, which has a simple structure and is used for applying a coating material to the uneven surface of the object to be coated by a spin coating method and to provide a method for spreading the coating material. <P>SOLUTION: The apparatus 1 for spreading the coating material is provided with: a rotary shaft part 30 to be rotated around a rotary shaft R; and a placement stand 10 which supports fixedly the coating material 88-supplied object 80 to be coated, is supported by the rotary shaft part 30 and turned around the turnable axis D in the direction crossing the direction of the rotary shaft R while being rotated by the rotation of the rotary shaft part 30. The method for spreading the coating material comprises the steps of: supplying the coating material 88 onto the surface of the object 80 to be coated; rotating the coating material 88-supplied object 80 to be coated around the rotary shaft R to spread the coating material 88; and changing the angle T of the object 80 to be coated with the rotary shaft R by turning the object 80 to be coated around the turnable axis D in the direction having the crossing with the direction of the rotary shaft R at the step of rotating the coating material 88-supplied object 80 to be coated around the rotary shaft R to spread the coating material 88. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a coating material spreading apparatus and a coating material spreading method, and more particularly, to an apparatus and a method for spreading a coating material to a desired thickness on a surface of an object to be coated which is not flat.

In order to apply a photoresist material to the surface of a printed wiring board, a liquid photoresist material is supplied to the surface of the printed wiring board and then rotated at a high speed, thereby utilizing the centrifugal force of high speed rotation. A method of spreading the film on the surface of the printed wiring board is often used (see, for example, Patent Document 1). In this way, the liquid coating material is supplied to the coating object such as a printed wiring board and then spread using a centrifugal force at a high speed, and the coating film thickness is uniform as a spin coating method. Since it can be applied to a desired thickness, it is widely used in the field of applying a protective film or an adhesive to an optical disk such as a CD (compact disk).
JP 2001-339144 A (page 2-3, FIG. 2)

  However, the method of rotating at high speed and spreading using centrifugal force has been conventionally used for a coated object having a flat surface such as a printed wiring board or an optical disk. However, in view of the ability to apply a uniform thickness to the desired thickness of the spin coating method, spin coating is also applied to the surface of an object to be coated, such as a curved surface or two surfaces that are connected at an angle close to a right angle. There is a high demand for applying a coating by the method. However, if a complicated structure is used as a device for spin-coating the uneven coating object, the cost of the device is high and the reliability is also lowered. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a coating material spreading device and a coating material spreading method for applying a coating material by a spin coating method to the surface of a non-flat coating material with a simple structure. .

  In order to achieve the above object, the spread material spreading apparatus according to the first aspect of the present invention includes, for example, a rotating shaft portion 30 that rotates about a rotation axis R as shown in FIG. The coated object 80 is fixedly supported, supported by the rotary shaft 30, and rotated about the rotation axis D in a direction intersecting the direction of the rotation axis R while rotating as the rotation shaft 30 rotates. The pedestal 10 is provided.

  If comprised in this way, since the mounting base which fixes and supports a to-be-coated object will rotate around the rotating shaft which cross | intersects the rotating shaft which a rotating shaft part rotates, of the rotating surface of the mounting table rotated around a rotating shaft. The angle (hereinafter also referred to as “inclination angle”) T with respect to the vertical plane with respect to the rotation axis can be changed. Therefore, it is possible to change the position on the coated object where the coated object is spread by rotating the coated object with a simple structure. Can be spread to thickness.

Moreover, in the coated material spreading apparatus which concerns on the 2nd aspect of this invention, as shown, for example in FIG. 3, in the coated material spreading apparatus which concerns on the 1st aspect of this invention, the rotating shaft part 30 is a mounting base. The mounting table 10 may be supported at a position shifted from the center of gravity position G (position of the rotation axis D). The “position shifted from the position of the center of gravity” refers to a position projected at a position deviated from the position where the center of gravity is projected when the center of gravity of the mounting table is projected on a plane perpendicular to the rotation axis.
If comprised in this way, since a mounting base will be supported and rotated in the position shifted | deviated from the gravity center position, according to rotation speed, a mounting base will rotate around a rotating shaft, and rotation of a mounting base will be carried out. The angle of the surface with respect to the rotation axis is changed.

Moreover, in the coating material spreading | diffusion apparatus which concerns on the 3rd aspect of this invention, as shown, for example in FIG. 1, in the coating material spreading | diffusion apparatus 1 which concerns on the 1st aspect or 2nd aspect of this invention, a rotating shaft The rotational speed of the part 30 is variable; a control device 46 for controlling the rotational speed of the rotary shaft part 30 may be provided.
With this configuration, since the rotation speed of the rotating shaft is controlled by the control device, the object to be coated can be rotated at a desired rotation speed or while changing the rotation speed. Easy to adjust. In particular, when the mounting table is supported at a position shifted from the position of the center of gravity, the tilt angle can be changed by controlling the rotation speed, and the desired product can be obtained by appropriately controlling the rotation speed. Can be spread to thickness.

Moreover, in the coated material spreading apparatus according to the fourth aspect of the present invention, for example, as shown in FIG. 4, the coated material spreading apparatus according to any one of the first to third aspects of the present invention. , A rotation drive device 70 that rotates the mounting table 10 about the rotation axis D may be provided.
If comprised in this way, since an inclination | tilt angle can be changed arbitrarily, it is easy to spread a coating material to desired thickness.

Moreover, in the coated material spreading apparatus according to the fifth aspect of the present invention, for example, as shown in FIGS. 2 (a) and 2 (b), any one of the first to fourth aspects of the present invention. In the coated material spreading apparatus according to the present invention, a plurality of suction parts 20 that protrude from the mounting table 10 and suck and fix the coated object 80 are provided, and the sucking part 20 protrudes from the mounting table 10 to match the shape of the coated object 80. The height h to be changed may be variable.
If comprised in this way, the to-be-coated to-be-coated object can be fixedly supported reliably by a mounting base.

Moreover, in the coated material spreading apparatus according to the sixth aspect of the present invention, for example, as shown in FIG. 2 (c), the coated material according to any one of the first to fourth aspects of the present invention. In the spreading device, the mounting table 14 may be fixedly supported by pressing the mounting table 14 in a direction crossing the rotation axis R.
If comprised in this way, since a mounting base will fix and support a to-be-coated object by pressing in the direction which cross | intersects a rotating shaft, when it has a surface where a to-be-coated object is pressed, it can be easily and reliably Can be fixedly supported.

Moreover, in the coated material spreading apparatus according to the seventh aspect of the present invention, for example, as shown in FIG. 5, the coated material spreading apparatus according to any one of the first to sixth aspects of the present invention. In this case, the rotary shaft 35 may rotate around the movable axis K in the direction intersecting the direction of the rotary axis R and the direction of the rotary axis D while rotating around the rotary axis R.
If comprised in this way, since a rotating shaft part can be rotated around the movable axis | shaft which cross | intersects a rotating shaft and a rotating shaft, it can be rotated by inclining a to-be-coated object also in the direction different from an inclination angle, and a coated object. Can change the direction of spreading.

  In order to achieve the above object, the spread material spreading method according to the eighth aspect of the present invention includes a step of supplying a spread material 88 to the surface of the object to be coated 80 (S1) as shown in FIGS. ); Rotating the coating object 80 supplied with the coating 88 around the rotation axis R (S3) and spreading the coating 88 (S4, S7); and spreading the coating 88 ( In S4, S7), a step (S6) of rotating the object 80 around the rotation axis D in a direction intersecting the direction of the rotation axis R and changing the angle T of the object 88 with respect to the rotation axis R (S6). Prepare.

  If comprised in this way, while rotating a to-be-coated object around a rotating shaft, it rotates to the rotation axis | shaft which cross | intersects a rotating shaft, and changes the angle with respect to the rotating shaft of an to-be-coated object, Therefore A to-be-coated object rotates. Accordingly, the position of the spread product to be spread on the workpiece can be changed, and the spread coating applied to the non-planar workpiece can be spread to a desired thickness.

Moreover, in the coated material spreading apparatus according to the ninth aspect of the present invention, for example, as shown in FIGS. 3 and 6, in the coated material spreading method according to the eighth aspect of the present invention, the coated material 88 is spread. In the extending step (S4, S7), a step (S5) of changing the rotation speed at which the article 80 rotates around the rotation axis R may be provided.
If comprised in this way, since the rotational speed which a to-be-coated object rotates about a rotating shaft is changed, spreading of a coated object can be adjusted.

  According to the present invention, the coating material spreading device fixedly supports the rotating shaft portion that rotates about the rotation axis and the workpiece to which the coating material is supplied, is supported by the rotating shaft portion, and rotates the rotating shaft portion. And a mounting table that rotates around a rotation axis in a direction that intersects the direction of the rotation axis while rotating, so that the mounting table that fixes and supports the coating object intersects with the rotation axis that the rotation shaft portion rotates. It is possible to change the inclination angle of the mounting table that rotates about the rotation axis and rotates about the rotation axis. Therefore, the position on the coated object where the coated object is spread by rotating the coated object can be changed. Therefore, it is possible to provide an application spreading device for applying an application by a spin coating method to the surface of an object to be applied which is not flat with a simple structure.

  Further, according to the present invention, the spread method of the coated material includes the step of supplying the coated material to the surface of the coated material, and the coated material to which the coated material is supplied is rotated around the rotation axis to spread the coated material. A step of rotating the coating object around a rotation axis in a direction intersecting the direction of the rotation axis in the step of spreading the coating material, and changing the angle of the coating material with respect to the rotation axis. It is possible to change the position of the coated material spread by rotating the material on the coated material. Therefore, it is possible to provide a method for spreading a coated material for applying a coated material by a spin coating method to the surface of a non-flat coated material with a simple structure.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or corresponding devices are denoted by the same reference numerals, and redundant description is omitted.

  First, with reference to FIG. 1, the coated material spreading apparatus 1 as an embodiment of the present invention will be described. FIG. 1 is a schematic diagram illustrating the configuration of the spread material spreading apparatus 1. The spread material spreading apparatus 1 includes a mounting table 10 that fixes and supports the object to be coated 80, and a plurality of suction units 20 that protrude from the mounting table 10 and suck and fix the coating object 80 (a plurality of suction units are individually set). When referring, subscripts a, b, and c are added), a rotating shaft portion 30 that supports the mounting table 10 and rotates around the rotating shaft R, and an electric motor as a driving device that rotates the rotating shaft portion 30. A motor 40, a coater house 50 that surrounds the rotating coated object 80 and captures the coated object 88 leaked from the coated object 80, a resin recovery device 60 that collects the coated object 88 from the coater house 50, and an electric motor And a control device 46 for controlling the rotational speed of 40.

  The rotating shaft portion 30 is arranged with the rotating shaft R in a direction substantially matching the vertical vertical direction. The lower end of the rotating shaft portion 30 is connected to the motor shaft portion 42 of the electric motor 40 and rotates around the rotating shaft R by the operation of the electric motor 40. The rotary shaft 30 or the motor shaft 42 is rotatably supported by a bearing (not shown) or the like, and the tilt and vibration of the rotary shaft R are prevented.

  The mounting table 10 is supported by the rotating shaft 30 so that the rotating shaft 30 is rotatable about a horizontal rotation axis D at the upper end opposite to the lower end where the rotating shaft 30 is connected to the motor shaft 42. The rotation axis D may not be horizontal but may be inclined. That is, the rotation axis R and the rotation axis D are directions that intersect each other. Here, when the mounting table 10 rotates around the rotation axis D orthogonal to the rotation axis R, the relationship between the angle of rotation and the action described later becomes clear and easy to operate, and the rotation is performed. This is preferable because the action expressed by the angle is increased.

  A plurality of suction portions 20a to 20c protrude from the upper surface of the mounting table 10 opposite to the side supported by the rotating shaft portion 30. The plurality of adsorbing portions 20a to 20c change the protruding heights ha to c (see FIG. 2) so as to match the shape of the non-flat object 80 to be coated. The protruding portion 20 contacts the object to be coated 80 with the protruding contact portion 24 at the tip, and adheres to the object to be coated 80.

  Here, with reference to FIG. 2, the mounting table 10 and the adsorption | suction part 20 are demonstrated. 2A and 2B are cross-sectional views for explaining the mounting table 10 and the suction portion 20 shown in FIG. 1. FIG. 2A is a cross-sectional view viewed in the same direction as FIG. 1, and FIG. FIG. 2C is a side view illustrating the mounting table 14 fixedly supported by pressing the workpiece 82, and FIG. 2D is a mounting jig 19. It is sectional drawing explaining the mounting base 18 which fixes and supports the to-be-coated article 80. FIG.

  First, referring to FIGS. 2A and 2B, the mounting table 10 includes a round bar-shaped center shaft 12 that penetrates the top of the rotating shaft portion 30, and two thick plates that are connected to both ends of the center shaft 12. The both side plates 11 are configured. The center shaft 12 is supported by a bearing 32 of the rotary shaft portion 30 so as to rotate about the axis. That is, the mounting table 10 is configured to be rotatable about the center shaft 12. A suction pipe 28 penetrating in the axial direction is formed in the center shaft 12, and the suction pipe 28 communicates with a suction pipe 38 formed in the rotary shaft portion 30 within a range in which the mounting table 10 rotates. A suction pipe 38 formed on the rotary shaft 30 is connected to a vacuum pump (not shown), and the suction pipe 28 is decompressed to a negative pressure via the suction pipe 38.

  Both side plates 11 are rectangular thick plates and are connected perpendicular to the axial direction of the center shaft 12. The side plates 11 are arranged such that the long sides of the rectangle are arranged at an angle close to the horizontal direction, that is, when the mounting table 10 rotates, the arms extending in the horizontal direction move up and down. The suction pipe 28 also extends into the two side plates 11, branches into two, and extends along the long side. A plurality of holes 13 for accommodating the suction portions 20 are formed in the side plates 11, and the suction pipes 28 are guided to the respective holes 13. As shown in FIG. 2A, the three holes 13 are arranged evenly distributed in the long side direction of the both side plates 11. Note that the number of the holes 13 is not limited to three, and the holes 13 are not necessarily arranged evenly. It is only necessary that the object to be coated 80 can be fixedly supported by the suction portion 20 housed and disposed in the holes 13.

  The suction part 20 is disposed in the hole 13 so as to be able to enter and exit the hole 13, the contact part 24 that is disposed at a protruding tip of the shaft part 22 and is fixed in contact with the workpiece 80, and the hole 13. And a spring 26 that urges the shaft portion 22 in a protruding direction. A through hole (not shown) that communicates with the suction tube 28 is formed in the shaft portion 22 and communicates with the suction tube 28. That is, if the through-hole is formed in the shaft portion 22 by the outer surface of the shaft portion 22 being configured to be airtight with the hole 13, the inside of the through-hole is a vacuum (not shown) via the suction pipes 28 and 38. The pressure is reduced to a negative pressure by a pump.

  The contact portion 24 is a substantially cylindrical member formed of an elastic material such as rubber, for example, and comes into contact with the object 80 to be applied, and the object 80 is subjected to negative pressure reduced through the suction pipes 28 and 38. Adsorb to. That is, the workpiece 80 is fixed to the suction portion 20. The spring 26 urges the shaft portion 22 in a direction in which the shaft portion 22 protrudes from the hole 13, thereby bringing the contact portions 24 into contact with the non-planar workpiece 80. In the example shown in FIG. 2A, the spring 26a is compressed in accordance with the shape of the curved workpiece 80, the suction portion 20a penetrates deeply into the hole 13, the spring 26b extends, and the suction portion 20b extends from the hole 13. The spring 26c is compressed and the suction portion 20c enters the hole 13 deeply. In addition, the structure which changes the height which the adsorption | suction part 20 protrudes may use the other well-known structure instead of the structure which inserts the axial part 22 in the hole 13, and is urged | biased with the spring 26. FIG. As described above, when the object 80 is fixed to the adsorption unit 20 by reducing the pressure to a negative pressure and adsorbing, the adsorption part 20 is fixed to the object 80 and the negative pressure is released by setting the negative pressure. Thus, the fixation can be easily released, and the object 80 can be fixed and supported on the mounting table 10 easily and can be removed.

  Next, referring to FIG. 2C, there is shown an example in which the workpiece 82 is fixedly supported on the mounting table 14 by means different from the above. The mounting table 14 includes a round bar-shaped telescopic shaft portion 15 penetrating the top of the rotary shaft portion 30 and two presser portions 16 formed of two relatively soft materials connected to both ends of the telescopic shaft portion 15. Is done. Here, “relatively soft” means that the material to be coated 82 is more easily deformed, and typically the material to be coated 82 is formed of a hard material such as metal, glass, or hard plastic. These are preferably made of a material (for example, soft plastic, rubber, etc.) that is slightly easier to deform than those materials. The round rod-like telescopic shaft portion 15 is supported so as to rotate about the same axis as the center shaft 12, and the mounting table 14 is configured to be rotatable about the telescopic shaft portion 15.

  The connection between the presser portion 16 and the telescopic shaft portion 15 is, for example, a screw joint, and the presser portion 16 and the telescopic shaft portion 15 can be expanded and contracted. Alternatively, the telescopic shaft portion 15 is inserted into a hole (not shown) formed in the presser portion 16 so that the telescopic shaft portion 15 can be extended and contracted. Further, a spring is accommodated in the hole and the presser portion 16 protrudes by the spring (mounting table). 14 may be biased in a direction in which the length of the entire length 14 is increased.

  In this example, the workpiece 82 has a hollow kamaboko shape in which a cylinder is cut in half, and is pressed by the mounting table 14 in a direction in which the inner sides of both end faces 83 spread. When the presser portion 16 and the telescopic shaft portion 15 are connected by a screw joint, the presser portion 16 is adjusted by a screw. When the presser portion 16 is biased by a spring, the presser portion 16 is moved by an urging force. To press. When the pressing portion 16 presses the end surface 83, the workpiece 82 is fixedly supported on the mounting table 14 by the frictional force between the pressing portion 16 and the end surface 83 that is generated by pressing. It is preferable that the presser portion 16 is formed of a relatively soft material, in particular, because the presser portion 16 fits into the end face 83, and is not slippery and is securely fixed. Although the coated object 82 has a curved side surface 84 corresponding to the outer periphery of the cylinder, the coated object 82 can be rotated in a curved direction as the mounting table 14 rotates. In addition, although the mounting base 14 does not mount the to-be-coated object 82 on it, since the to-be-coated object 82 is fixedly supported by pressing the end surface 83, it is contained in the concept of a mounting base. When the mounting table 14 fixes and supports the workpiece 82 by pressing the end surface 83, it is preferable because the mounting table 14 can be fixed and supported with a simple structure. However, the condition is that the workpiece 82 has two parallel planes to be pressed corresponding to the end face 83. In addition, in the example shown in FIG.2 (c), although the mounting base 14 is pressing the end surface 83 from the inner side, it is good also as a structure pressed so that it may pinch | interpose from the outer side.

  Next, referring to FIG. 2D, the mounting table 18 has a flat upper surface on the side on which the workpiece 80 is mounted, and the mounting jig 19 is fixed to the flat surface. An example in which the jig 19 fixes and supports the workpiece 80 is shown. The mounting jig 19 and the workpiece 80 may be fixed by any known method. Similarly, the mounting table 18 and the mounting jig 19 may be fixed by any method. Since the mounting table 18 is configured to fix and support the workpiece 80 via the mounting jig 19, it is easy to replace the mounting jig 19 even for various shapes of coating objects. It is possible and suitable.

  Returning to FIG. 1, the explanation of the coated material spreading apparatus 1 is continued. The coater house 50 is a substantially cylindrical container in which an upper portion surrounding the rotating shaft portion 30, the mounting table 10, the suction portion 20, and the workpiece 80 is opened. The upper edge of the side wall 52 corresponding to the cylindrical side surface is bent so as to incline inward, so that the coated material 88 scattered by the rotation of the coated material 80 hardly leaks to the outside of the coater house 50. The motor shaft portion 42 passes through the center portion of the bottom plate 54 of the coater house 50, and connects the electric motor 40 disposed below the bottom plate 54 and the rotary shaft portion 30 disposed inside the coater house 50. In addition, other holes are formed in the bottom plate 54, and a recovery pipe 62 of the resin recovery device 60 is connected and opened.

  The resin recovery device 60 is a device that recovers the coated material 88 that is scattered by the rotation of the coated material 80. The resin collecting device 60 is connected to the bottom plate 54 of the coater house 50 and the lower end of the collecting tube 62. By connecting the resin reservoir 64 which is a container for storing the object 88 and the upper portion of the resin reservoir 64 and discharging the air from the resin reservoir 64, the air from the coater house 50 to the recovery pipe 62 and the resin reservoir 64 to the outside An exhaust pipe 66 for generating a flow and an exhaust fan 68 disposed in the exhaust pipe 66 are provided. The coating 88 captured by the coater house 50 is typically resin, but is pushed by the air flow from the coater house 50 to the resin recovery device 60 caused by the exhaust fan 68, and is collected in the recovery pipe 62. Flowing. The applied material 88 that has flowed into the recovery pipe 62 flows into the resin reservoir 64 and accumulates at the bottom thereof. On the other hand, since the exhaust pipe 66 is connected to the upper part of the resin reservoir 64, only air is discharged from the resin reservoir 64, and the coating material 88 is stored in the resin reservoir 64.

  The operation of the electric motor 40, that is, the start / stop and the adjustment of the rotation speed are controlled by the control device 46. The electric motor 40 is connected to a control device 46 by a signal cable 44 and operates according to a signal from the control device 46. The controller 46 has a built-in timer (TM) 48 that can measure the operating time.

  Next, with reference to FIG. 3 as well, the action of the spread material spreading apparatus 1, particularly the action due to the rotation of the rotating shaft portion 30 and the rotation of the mounting table 10 will be described. FIG. 3 is a schematic diagram for explaining a state in which the mounting table 10 rotates while rotating with the rotation of the rotating shaft portion 30 and spreads the coating 88 on the workpiece 80. FIG. (B) increases the rotation speed, and when the mounting table 10 rotates and the inclination angle T decreases, (c) further increases the rotation speed and the mounting table 10 rotates. Then, the case where the tilt angle T is substantially 0 (zero), that is, substantially horizontal is shown. The workpiece 80 to which the coating material 88 is supplied is fixedly supported on the mounting table 10 via the suction unit 20. The application 88 is typically applied over the entire surface of the application 80 to be applied, but not to the desired thickness. The coated material 88 may be supplied together on a part of the surface of the coated material 80. In FIG. 3, “A”, “B”, and “C” indicate A part, B part, and C part in which the cross-sectional direction in FIG.

  The mounting table 10 to which the workpiece 80 is fixed has a center of gravity G position, a position where the mounting table 10 is supported by the rotary shaft 30, typically a rotation axis D, and both side plates 11 of the mounting table 10. It is shifted in the long side direction (see FIG. 2). Here, the “center of gravity G position” is a position where the center of gravity G of the mounting table 10 is projected in the direction of the rotation axis. Since the position of the center of gravity G is deviated from the rotation axis D, the mounting table 10 is tilted together with the workpiece 80. That is, the center of gravity G side is downward. Strictly speaking, the center of gravity G here is the center of gravity of the mounting table 10, the suction unit 20, and the workpiece 80 to which the coating material 88 is supplied, but the mounting table 10 as compared with other members. Therefore, there is no problem even if it is considered as the center of gravity of the mounting table 10. When there is a special circumstance such as the mass of the mounting table 10 is not large, the “center of gravity G of the mounting table 10” is integrated with “the mounting table 10, the suction unit 20 and the application object 80 supplied with the coating 88”. As “the center of gravity G”.

  As shown in FIG. 3A, the electric motor 40 rotates at a low speed in response to a signal from the control device 46. While rotating at a low speed, a change in the inclination angle T as an angle between a rotation surface on which the mounting table 10 rotates around the rotation axis R and a plane perpendicular to the rotation axis R is small. That is, the mounting table 10 hardly rotates around the rotation axis D. The tilt angle T is represented by an angle formed by the upper surface of the mounting table 10 and the vertical plane of the rotation axis R. Therefore, the object 80 is rotated around the part A with the surface on which the object 88 is applied substantially horizontal, that is, at an angle close to the rotation axis R, and around the part B or the part C. Is rotated at an angle close to the rotation axis R. As a result, the coating 88 around the portion A that rotates at an angle close to the rotation axis R is spread with the direction of the centrifugal force and the direction in which the coating 88 is spread, Alternatively, the coated material 88 around the portion C is not spread so much because the direction of the centrifugal force and the direction in which the coated material 88 is spread do not match.

  Next, as shown in FIG. 3B, the electric motor 40 rotates at a higher rotational speed in accordance with a signal from the control device 46. By increasing the rotation speed, the centrifugal force acting on the mounting table 10 (strictly speaking, the integrated portion including the workpiece 80 supplied with the suction unit 20 and the coating material 88) increases, and the inclination angle T decreases. That is, it approaches the horizontal. Therefore, the angle of the surface of the object 80 to which the coating material 88 is applied is separated from the vertical surface of the rotation axis R around the A portion, approaches the vertical surface of the rotation axis R around the B portion, and rotates around the C portion. Although close to the vertical plane of the axis R, the angle is still close to the rotation axis R. As a result, the coated material 88 around the B portion rotating at an angle close to the rotation axis R is spread with the direction of the centrifugal force and the direction in which the coated material 88 is spread, Alternatively, the coated material 88 around the portion C is not spread so much because the direction of the centrifugal force and the direction in which the coated material 88 is spread do not match.

  Next, as shown in FIG. 3C, the electric motor 40 further rotates at a higher rotational speed in accordance with a signal from the control device 46. By further increasing the rotation speed, the centrifugal force acting on the mounting table 10 is further increased, and the inclination angle T is decreased. The inclination angle T decreases until the rotation axis D and the center of gravity G become substantially horizontal. Therefore, the angle of the surface of the object 80 to which the coated object 88 is applied is separated from the vertical surface of the rotation axis R around the A portion or the B portion, and approaches the vertical surface of the rotation axis R around the C portion. As a result, the coating material 88 around the portion C rotating at an angle close to the rotation axis R is spread with the direction of the centrifugal force and the direction in which the coating material 88 is spread, Alternatively, the coating 88 around the portion B is not spread so much because the direction of the centrifugal force and the direction in which the coating 88 is spread do not match.

  As described above, by changing the tilt angle T of the mounting table 10 and rotating around the rotation axis R, it is possible to change the portion where the coating material 88 supplied to the coating material 80 is spread. . Thus, the coating 88 supplied to the surface of the curved workpiece 80 or other irregularly shaped workpiece with a simple structure can be formed to a desired thickness, typically a uniform thickness. It becomes possible to spread. In particular, since the position of the center of gravity G is deviated from the rotation axis D on which the mounting table 10 is supported by the rotating shaft portion 30, the inclination angle T changes according to the rotation speed of the mounting table 10, that is, the rotation speed. If it is rotated about the rotation axis D by changing, it is only necessary to change the rotation speed, so that it can be spread to a desired thickness very easily, which is preferable. However, when the rotation speed is high, the progress of the spread is also fast, and when the rotation speed is slow, the progress of the spread becomes slow. Therefore, it is necessary to adjust the rotation time. Therefore, by configuring the rotation speed and the rotation time to be controlled by the control device 46, it becomes easy to reliably spread the film to a desired thickness.

  Next, with reference to FIG. 4, the structure which rotates the mounting base 10 with the rotation drive device 70 as a drive device which rotates not the centrifugal force but the mounting base 10 is demonstrated. FIG. 4 is a schematic diagram for explaining an example in which the mounting table 10 rotates with the rotation of the rotating shaft 30 and is rotated by the rotation driving device 70 to spread the coating 88 on the workpiece 80. (A) is initially rotated with a large tilt angle T, (b) is rotated with a small tilt angle T and is almost 0 (zero), (c) is an initial A case is shown in which the tilt angle T is increased in the reverse direction.

  The rotation driving device 70 supports a support rod 76 that is a rigid linear rod that hangs vertically downward from a position separated from the rotation axis D of the mounting table 10, and a lower end of the support rod 76, and vertically up and down. An annular flat donut plate 72 centering on the moving rotation axis R, and an actuator 74 for moving the donut plate 72 up and down are provided. The upper end of the support rod 76 is supported by the mounting table 10 so as to be rotatable in a radial direction around the rotation axis R, and the lower end is supported so as to be movable on the donut plate 72. Since the support rod 76 is supported so that the upper end is rotatable in the radial direction about the rotation axis R, the lower end can be disposed on the donut plate 72 regardless of the inclination angle T of the mounting table 10. Further, since the lower end is movable on the donut plate 72, the mounting table 10 can be rotated without being obstructed by the rotation driving device 70, and the donut plate 72 and the actuator 74 do not need to rotate.

  The actuator 74 may be a known device including a hydraulic cylinder such as a pneumatic type or a hydraulic type, a mechanical lifting means such as a ball screw. When the donut plate 72 is raised by the actuator 74, the lower end of the support rod 76 is pushed up, and therefore the upper end is also pushed up, and the mounting table 10 connected to the upper end is lifted. Since the position where the support rod 76 is suspended is separated from the rotation axis D, the mounting table 10 rotates about the rotation axis D. Conversely, when the donut plate 72 is lowered, the mounting table 10 rotates in the reverse direction. If the position where the support rod 76 is drastically separated from the rotation axis D, the mounting table 10 can be rotated with a small force, but the position where the support rod 76 is suspended is close to the rotation axis D. Then, the mounting table 10 can be largely rotated by a small movement of the support rod 76, that is, the actuator 74.

  When the rotation driving device 70 is provided to rotate the mounting table 10, the mounting table 10 can be rotated around the rotation axis D at a large angle as shown in FIG. Unlike the case of rotating by the centrifugal force described in FIG. 3, the rotation axis D and the center of gravity G are not limited to an inclination angle T at which the rotation axis D and the center of gravity G are substantially horizontal. Further, since the inclination angle T does not depend on the rotation speed, the rotation speed can be arbitrarily set, for example, a constant rotation speed. Therefore, it becomes possible to spread the coating material supplied to the surface of the non-flat coating object 80 having an arbitrary shape to a desired thickness with a simple structure. In this case, it is preferable to control the rotational speed of the electric motor 40 (see FIG. 1) and the operation of the actuator 74 by the control device 46 (see FIG. 1). By controlling with the control device 46, the complicated adjustment of the rotational speed and the operation of the actuator 74 can be accurately controlled. In addition, the rotation drive device 70 may have another configuration, for example, the mounting table 10 may be directly rotated by a step motor (not shown).

  Next, with reference to FIG. 5, a description will be given of the case where the rotating shaft portion 35 that can rotate around the movable axis K in the direction intersecting the direction of the rotating shaft R and the direction of the rotating shaft D is provided. FIG. 5A is a front view of the mounting table 10, the rotary shaft portion 35, and the like, and FIG. 5B is a side view. The rotating shaft part 35 has a rotating shaft upper part 36 and a rotating shaft lower part 37, and the rotating shaft upper part 36 supports the mounting table 10 so as to be rotatable about the rotation axis D, and the rotating shaft lower part 37 is a motor shaft part. 42 (see FIG. 1). The rotating shaft lower portion 37 and the rotating shaft upper portion 36 are connected so as to be rotatable around the movable axis K. The movable axis K is typically an axis in a direction orthogonal to the rotation axis R and the rotation axis D. Further, the position of the movable shaft K, that is, the ratio of the length of the rotating shaft upper portion 36 and the rotating shaft lower portion 37 is arbitrary, but if the rotating shaft upper portion 36 is long, it rotates when tilted around the movable axis K. Since the eccentric mass when rotating around the axis R increases and the possibility of causing problems such as vibration increases, it is preferable to shorten the rotating shaft upper part 36.

  The rotary shaft lower portion 37 and the rotary shaft upper portion 36 may rotate around the movable axis K by a known means such as a servo motor mechanism while rotating around the rotary axis R by the electric motor 40 (see FIG. 1). Alternatively, or while the electric motor 40 is stopped, after manually turning around the rotation axis K to determine the bending angle of the rotation shaft portion 35, the rotation around the movable axis K is fixed with a screw or the like. The electric motor 40 may be configured not to rotate during operation. The direction and the magnitude of the centrifugal force acting on the coated object 88 on the coated object 80 can be changed by rotating the rotating shaft part 35 around the movable axis K and changing the angle of the rotating shaft upper part 36. That is, since the spreading direction and speed are changed, it is possible to spread the coated material 88 to a desired thickness even with the object 80 having a complicated shape. Therefore, the coated material spreading device has a simple structure. 1 (see FIG. 1) can be widened. If the electric motor 40 is manually rotated around the rotation axis K while the electric motor 40 is stopped, the movable axis K in the direction intersecting the direction of the rotation axis R and the direction of the rotation axis D is very simple. It becomes the rotating shaft part 35 which can be rotated around.

  Here, the basic flow of the coating material spreading method described so far will be described with reference to the flowchart of FIG. Note that although FIG. 1 is referred to as the coated material spreading apparatus, the coated material spreading method shown in the flowchart of FIG. 6 is not limited to the coated material spreading apparatus 1 in the present embodiment, and other The aspect of this may be sufficient. FIG. 6 is a flowchart for explaining a coated material spreading method including a step of rotating the coating object around a rotation axis in a direction intersecting with a rotation axis for rotating the coating material. First, the coated material 88 is supplied to the surface of the coated material 80 (step S1). The workpiece 80 to which the coating material 88 is supplied is fixed to the mounting table 10 (step S2). In addition, after fixing the to-be-coated object 80 to the mounting base 10, you may supply the coated object 88. FIG. When the object 80 is fixed to the mounting table 10, the object 80 is inclined. That is, the surface of the mounting table 10 on which the workpiece 80 is mounted is not horizontal but is inclined at an inclination angle T.

  The mounting table 10 to which the workpiece 80 is fixed is rotated at the first rotation speed (step S3). By rotating at the first rotation speed, the tilt angle T becomes a certain tilt angle T1 (not shown). In this state, the coating material 88 of the first portion (for example, portion A in FIG. 3) of the coating object 80 is mainly spread, and the coating material 88 of other portions is hardly spread (step S4). Next, the rotational speed is accelerated (step S5). By accelerating the rotation speed, the tilt angle T of the mounting table 10 changes due to the centrifugal force acting on the mounting table 10 and the like, and becomes a certain tilt angle T2 (not shown) (step S6). Therefore, the part where the application object 88 of the application object 80 is mainly spread is changed from the first part to the second part (for example, part B in FIG. 3) (step S7). Thus, since the position on the coating object 80 where the coating material 88 is spread is changed by changing the rotation speed, the rotation speed is appropriately changed, and the steps S5 to S7 are repeated, whereby the coating material 80 is coated. The coated material 88 can be spread over the entire surface, and can be spread to a desired thickness.

  When the coating material 88 is spread to a desired thickness, the mounting table 10 and the coating object 80 are stopped from rotating (step S8). If the coated material 88 is an ultraviolet curable resin, the coated material 88, which is an ultraviolet curable resin, is solidified by ultraviolet irradiation to stabilize the shape (step S9). The ultraviolet irradiation may be performed while the workpiece 80 is fixed to the mounting table 10 or rotated. By irradiating with ultraviolet rays while being fixed to the mounting table 10, immediately after spreading to a desired thickness, the applied material 88 can be solidified without applying vibration or the like to deform the applied material 88. Easy to maintain thickness. Furthermore, when the ultraviolet irradiation can be performed while rotating, since the ultraviolet irradiation can be performed and solidified when the coated material 88 reaches a desired thickness, the desired thickness can be more easily maintained. In this case, the coating material spreading apparatus 1 is provided with an ultraviolet lamp (not shown). However, if the application object 80 is removed from the mounting table 10 and ultraviolet irradiation is performed in another place, the spreading of the application object 88 having a long processing time and the ultraviolet irradiation are performed by separate apparatuses. The processing capability of the spreading device 1 is improved. In addition, since the ultraviolet light can be irradiated while the object to be coated 80 is stationary at a predetermined position, the distance between the ultraviolet lamp and the coated material 88 can be arbitrarily adjusted, and even a weak ultraviolet lamp can be used sufficiently.

  In the description with reference to the flowchart of FIG. 6 described above, it has been described that the mounting table 10 rotates about the rotation axis D by the centrifugal force due to the rotation. Other mechanisms such as the device 70 (see FIG. 4) may be used. Moreover, although it demonstrated so that it may accelerate in steps from the 1st rotation speed to the next rotation speed, the change in rotation speed may be performed smoothly, and it is not only in acceleration but also in steps or smoothly. You may slow down.

  Next, as shown in FIG. 7, the application object 92 on the application object 90 having a curved surface (B ′, C ′ part) and a surface bent from the curved surface (A ′ part) is rotated. An experiment was conducted to compare the thickness of the coated material 92 after spreading between the case of rotating around the R and rotating and spreading and the case of rotating and spreading without turning as usual. . The supplied applied material 92 is a paint having a viscosity of 0.04 Pa · s (25 ° C.). As shown in FIG. 7, the object 90 to which the application object 92 was supplied was fixedly supported by the mounting table 10 via the suction part 20, and the rotary shaft part 30 was rotated.

  FIG. 8 is a graph showing the relationship between the rotation speed v and time t as an example. In the present embodiment, the rotational speed was changed in three stages, v1, v2, and v3. In addition, the rotation time at v1 where the rotation speed is low is lengthened, and the rotation time is shortened and the film thickness is uniform as v2 and v3 are increased. Here, v1 is 500 (1 / min), v2 is 1250 (1 / min), v3 is 2000 (1 / min), t1 is 8 seconds after the start of rotation (t0), and t2 is the start of rotation (t0). After 12 seconds, t3 is 13 seconds after the start of rotation (t0).

  As a comparative example, the same coated object 92 is supplied to the same coated object 90, the upper surface of the mounting table 10 on which the coated object 90 is placed is kept horizontal, and it rotates for 6 seconds at a rotation speed of 1500 (1 / min). The coated material 92 was spread.

  FIG. 9 collectively shows the film thicknesses of the applied products after spreading in the example and the comparative example for each position A ′, B ′, and C ′. As is apparent from FIG. 9, the coated product according to the present invention that rotates about the rotation axis R while rotating is compared with the comparative example by the conventional coated material spreading method in which the coated material 90 is rotated while being fixed horizontally. According to the spreading method, the thickness of the coating 92 after spreading can be made more uniform. That is, it was found that a desired film thickness can be obtained.

It is a schematic diagram explaining the structure of a coated material spreading apparatus. (A), (b) is sectional drawing explaining the mounting base and adsorption | suction part shown in FIG. 1, (a) is sectional drawing seen in the same direction as FIG. 1, (b) is perpendicular | vertical orthogonal to (a). Sectional drawing in a cross section, (c) is a side view for explaining a mounting table fixed and supported by pressing the object to be coated, and (d) illustrates a mounting table for fixing and supporting the object to be coated by a mounting jig. FIG. In the schematic diagram illustrating the state where the mounting table rotates while rotating with the rotation of the rotating shaft portion and spreads the coated material on the coated material, (a) is rotating at a low speed in the initial stage, (B) shows a case where the rotation speed is increased and the mounting table is rotated and the inclination angle is reduced, and (c) is a case where the rotation speed is further increased and the mounting table is rotated and becomes almost horizontal. . FIG. 5 is a schematic diagram for explaining an example in which the mounting table rotates with the rotation of the rotating shaft and is rotated by a rotation driving device to spread the coated material on the coated material. FIG. When rotating in a large state, (b) has a small tilt angle, and when rotating at almost 0 (zero), (c) rotates with a large tilt angle in the direction opposite to the initial direction. Indicates the case. It is a figure explaining the rotating shaft part which can be rotated around the movable axis of the direction which intersects the direction of a rotating shaft and the direction of a rotating shaft, (a) is a front view, such as a mounting base and a rotating shaft part, (B) shows a side view. It is a flowchart explaining the coating material spreading | diffusion method provided with the process of rotating the to-be-coated object around the rotation axis | shaft of the direction which cross | intersects the rotating shaft which rotates a to-be-coated material. It is a figure explaining the shape of the to-be-coated object used in the Example and the comparative example. It is a figure which graphs and shows the relationship between the rotational speed and time which spread the coating material which rotated the to-be-coated material as an Example. It is a figure which shows collectively the film thickness of the coating material after the extension of an Example and a comparative example for every position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coating material spreading apparatus 10 Mounting stand 11 Both side plate 12 Center axis | shaft 13 Hole 14 Mounting stand 15 Telescopic shaft part 16 Holding part 18 Mounting stand 19 Mounting jig 20 (20a, 20b, 20c) Adsorption part 22 (Adsorption part of adsorption part) ) Shaft portion 24 (Adsorption portion) Contact portion 26 (26a, 26b, 26c) Spring 28 Suction tube 30 Rotating shaft portion 32 Bearing 35 Rotating shaft portion 36 Rotating shaft upper portion 37 Rotating shaft lower portion 38 Suction tube 40 Electric motor (drive device) )
42 motor shaft 44 signal cable 46 control device 48 timer 50 coater house 52 side wall 54 bottom plate 60 resin recovery device 62 recovery pipe 64 resin reservoir 66 exhaust pipe 68 exhaust fan 70 rotational drive device 72 donut plate 74 actuator 76 support rod 80 covered Application object 82 Application object 83 End face 84 Side surface 88 Application object 90 Application object 92 Application object A, B, C, A ', B', C 'Position on application object D Rotating axis G Center of gravity position h (ha , Hb, hc) Height K protruding from the mounting table Movable shaft R Rotating shaft T Inclination angle (An angle of the rotating surface of the mounting table rotating around the rotating shaft with respect to the rotating shaft)
t Time v Rotational speed

Claims (6)

A rotating shaft that rotates about the rotating shaft;
The object to be coated is fixedly supported, supported by the rotating shaft portion, and rotated around the rotation axis in a direction intersecting the direction of the rotating shaft while rotating as the rotating shaft portion rotates. Bei example and the mounting table to;
A plurality of adsorbing portions that protrude from the mounting table and adsorb and fix the object to be coated; and the height of the adsorbing part protruding from the mounting table is variable to match the shape of the object to be coated;
Application spreader. A rotating shaft that rotates about the rotating shaft;
The object to be coated is fixedly supported, supported by the rotating shaft portion, and rotated around the rotation axis in a direction intersecting the direction of the rotating shaft while rotating as the rotating shaft portion rotates. Bei example and the mounting table to;
The rotating shaft rotates around a movable shaft in a direction intersecting the direction of the rotating shaft and the direction of the rotating shaft while rotating around the rotating shaft;
Application spreader. The rotating shaft portion supports the mounting table at a position shifted from the center of gravity of the mounting table;
The coated material spreading apparatus according to claim 1 or 2 . A rotation drive device for rotating the mounting table around the rotation axis;
The coating material spreading | diffusion apparatus of any one of Claim 1 thru | or 3. A rotating shaft that rotates about the rotating shaft;
The object to be coated is fixedly supported, supported by the rotating shaft portion, and rotated around the rotation axis in a direction intersecting the direction of the rotating shaft while rotating as the rotating shaft portion rotates. Bei example and the mounting table to;
The rotating shaft supports the mounting table at a position shifted from the center of gravity of the mounting table ;
The rotating shaft portion is arranged so that the rotating shaft is oriented in the vertical direction, and the mounting table rotates around the rotating shaft by centrifugal force according to the rotation speed of the rotating shaft portion, Configured to change the tilt angle of the table;
Application spreader. The rotational speed of the rotating shaft is variable;
A control device for controlling the rotational speed of the rotary shaft portion;
The coated material spreading apparatus according to any one of claims 1 to 5 .

Images