JP6442747B2 - Rod-shaped body coating equipment - Google Patents

Description

  The present invention relates to a rod-shaped body coating apparatus for applying a so-called gradation coating that gradually changes the shading of the paint in the axial direction on the surface of a rod-shaped body such as a golf shaft, ski stock, fishing rod, or cane. .

  The tubular body, which is a rod-shaped body such as a golf shaft, ski stock, fishing rod, or cane, is given a geometric design and various colors to give it an aesthetic appearance and differentiate it from other products. Increasing product value.

  For this reason, various coatings are performed on the tubular body. For example, applying gradation coating in the axial direction is also an effective means for satisfying customers. The gradation coating method for such a tubular body is disclosed in Patent Documents 1 to 3.

  Patent Documents 1 and 2 disclose that gradation coating can be performed in the axial direction of the tubular body by changing the speed of the injection device with respect to the tubular body.

  In Patent Document 3, it is disclosed that a partition wall is provided between the tubular body and the injection device, and the amount of the spray paint in the region in the axial direction of the tubular body is changed by the partition wall.

JP 2014-233526 A Japanese Patent Laid-Open No. 2006-10772 JP 2007-222550 A

  However, as in Patent Documents 1 and 2, in the method of performing gradation painting by changing the moving speed of the injection device with respect to the axial direction of the tubular body, the control for changing the moving speed becomes complicated.

  Further, according to this method, gradation of gradation can be added, but an area where no paint is applied cannot be provided. Therefore, for example, it is impossible to provide gradation coating on both ends by providing a region where no paint is applied at the center of the tubular body.

  Further, as in Patent Document 3, it is possible to perform gradation painting by providing a partition wall, that is, a mask, but the paint adheres easily to the edge of the mask and accumulates, and the paint accumulated on this edge reaches the tubular body. There is a problem of being blown away and attached. This tubular body is uneven in the painted state, and the commercial value is lost.

  Furthermore, although it is conceivable to perform gradation painting by changing the distance between the tubular body and the injection device, it is necessary to ensure a distance that the paint does not reach the tubular body, and a large space is required. In addition, since the spray distance of the paint changes depending on the temperature and humidity, it is necessary to appropriately adjust the spray distance when a large number of tubular bodies are subjected to gradation coating. In particular, changes in temperature, humidity, and paint type are likely to affect the area where the gradation becomes light, that is, the spray distance becomes long, making the same gradation painting difficult.

  An object of the present invention is to solve the above-mentioned problems and to provide a rod-shaped body coating apparatus that can perform a quality gradation coating along an axial direction at an arbitrary position of a rod-shaped body.

  In order to achieve the above object, a rod-shaped body coating apparatus according to the present invention is a rod-shaped body coating apparatus that performs gradation coating along the axial direction of the surface of a rod-shaped body that is a body to be coated, and both ends of the rod-shaped body. Holding means for holding the part, rotating means for rotating the rod-like body around an axis, and injection means for injecting a uniform amount of paint by a nozzle onto the surface of the rod-like body rotated by the rotating means; A moving means for moving the ejecting means at a constant speed along the axis of the rod-shaped body, and the ejecting means relative to the axis along the movement by the moving means in a direction perpendicular to the axis of the rod-shaped body. And deflecting means for deflecting by changing the movement.

  Moreover, the rod-shaped body coating apparatus according to the present invention is a rod-shaped body coating apparatus that performs gradation coating along the axial direction of the surface of the rod-shaped body that is the object to be coated, and holds the both ends of the rod-shaped body. Means, rotating means for rotating the rod-like body about an axis, injection means for injecting a uniform amount of paint by a nozzle onto the surface of the rod-like body rotated by the rotating means, and the injection means A moving means that moves at an equal speed along the axis of the rod-shaped body, and the direction of the nozzle relative to the axis is rotated and deflected in a direction orthogonal to the axis of the rod-shaped body in accordance with the movement by the moving means. And deflecting means.

  According to the rod-shaped body coating apparatus according to the present invention, the same gradation coating can be applied to the rod-shaped body by adjusting the temperature, the humidity, the type of the paint, and the like by spraying the paint at substantially the same distance.

It is a top view of the rod-shaped object coating apparatus of Example 1. FIG. It is a side view. It is a principal part expanded block diagram. It is explanatory drawing of the horizontal movement of a nozzle. FIG. 6 is an enlarged configuration diagram of a main part of a second embodiment. It is explanatory drawing of the angle change of a nozzle.

  The present invention will be described in detail based on the embodiments shown in the drawings.

  FIG. 1 is a plan view of a stick-shaped body coating apparatus according to an embodiment, FIG. 2 is a side view, and FIG. The rod-shaped body coating apparatus has a rectangular parallelepiped frame 10 having a width of 60 cm, a depth of 130 cm, and a height of 180 cm, for example, and the inside of the frame 10 is partitioned into a coating booth 11 and an exhaust booth 12 in the depth direction. A shielding plate for preventing the scattering of the paint is attached around the painting booth 11 and the exhaust booth 12 as necessary. In particular, the exhaust booth 12 is almost sealed to exhaust the air inside.

  The paint booth 11 and the exhaust booth 12 are partitioned by a filter 13, the air in the paint booth 11 is sucked into the exhaust booth 12, and the air in the exhaust booth 12 is provided on the frame 10 through the duct 14. The exhaust fan 15 is discharged to the outside.

  In the painting booth 11, a golf shaft S made of a tapered tubular body as a rod-shaped body of the object to be coated is arranged in the vertical direction, and holding means 20 for holding the surface end portion, and by this holding means 20 Rotating means 30 for rotating about the axis of the shaft S is provided. The ejecting means 50 is moved up and down by the vertical moving means 40 and the ejecting means 50 is horizontally moved by the deflecting means 60 in the horizontal direction. Yes.

  In addition, as a to-be-held body hold | maintained at the holding means 20, if it is a rod-shaped body containing tubular bodies, such as a golf shaft, it is applicable to a rod-shaped body coating apparatus.

  The holding means 20 includes a pair of upper and lower rotatable holding portions 21a and 21b. The lower holding portion 21b has a holding end 22b that enters into the narrow diameter portion of the lower end Sb of the shaft S indicated by the alternate long and short dash line and is covered with rubber for preventing slipping. The holding end 22b is vertically moved within a predetermined range. It is movable and is urged upward by a spring. The upper holding portion 21a has a holding end 22b that enters the large diameter portion of the upper end Sa of the shaft S, is covered with rubber, and can move up and down within a predetermined range, and is biased downward by a spring.

  A base plate 16 is provided above the painting booth 11, and a holding portion 21 a at the upper end of the holding means 20 is connected to a rotation motor 31 of a rotation means 30 disposed on the base plate 16.

  The vertical movement means 40 includes a vertical movement motor 41, pulleys 42 a and 42 b, a belt 43, a base 44, and two guide shafts 45. A vertical movement motor 41 is provided on the base plate 16. Of the pulleys 42 a and 42 b arranged above and below, the vertical movement motor 41 is connected to the upper pulley 42 a to rotate the pulley 42 a. Yes.

  A belt 43 is looped between the pulleys 42 a and 42 b, and a base 44 for attaching the ejecting means 50 is fixed to a part of the belt 43. Further, two guide shafts 45 are erected so as to be parallel to the vertical direction along the belt 43. By inserting insertion holes provided in the base 44 into these guide shafts 45, the base 44 Can move up and down without swinging.

  The injection unit 50 includes a nozzle mechanism 52 including a nozzle 51, a tracing surface 53, and a paint supply pipe 54. A nozzle mechanism 52 is movably attached to the base 44 in the lateral direction, and a nozzle 51 for injecting the paint P forward is fixed to the nozzle mechanism 52. Further, a side surface 53 is provided on the side of the nozzle mechanism 52. A paint supply pipe 54 is connected to the nozzle 51 so that paint P from a paint tank (not shown) is intermittently supplied by control by an electric valve.

  The deflecting means 60 for deflecting the direction of the ejection means 50 includes a guide rail 61, a guide cam 62, and a tension spring 63. The base 44 is provided with a guide rail 61 of a deflecting means 60 for laterally moving the ejecting means 50 in the horizontal direction. The nozzle mechanism 52 allows the position of the nozzle 51 with respect to the shaft S to be approximately equidistant, for example, by the guide rail 61. While maintaining a distance of 30 cm, the linear movement is made in the lateral direction perpendicular to the axial direction of the shaft S.

  As the deflection means 60, a guide cam 62 for moving the nozzle mechanism 52 in the lateral direction is provided in the vertical direction. The guide cam 62 is formed of a substantially right triangular plate, and the length of the opposite side indicating the height is as follows. The length is approximately the same as the length between the pulleys 42 a and 42 b, and the opposite side is installed so as to be parallel to the vertical guide shaft 45. In the embodiment, for example, the upper end Sa is dark and the lower end Sb is light and gradation coating is performed on the shaft S, so that the upper width of the guide cam 62 is narrow and the lower width is wide.

  When the ejection unit 50 moves in the vertical direction, the nozzle mechanism 52 is driven while the surface 53 provided on the side of the nozzle mechanism 52 is in sliding contact with the oblique side of the guide cam 62. The nozzle mechanism 52 is always pulled toward the guide cam 62 by a tension spring 63, and the profile surface 53 is in contact with the guide cam 62 in a biased state.

  The lateral movement of the nozzle mechanism 52 can be realized without using the guide cam 62, for example, by tilting the guide shaft 45 or by other means.

  In order to perform gradation coating along the axial direction on the surface of the shaft S using the rod-shaped body coating apparatus of the present embodiment, both ends of the shaft S are attached to the holding means 20. At the time of this holding, when the lower end Sb of the shaft S is first pushed down while being inserted into the holding end 22b of the holding portion 21b, the holding end 22b sinks downward against the urging force of the spring.

  When the upper end Sa of the shaft S is applied to the holding end 22a of the holding portion 21a and the upper end Sa is fitted to the holding end 22a, the shaft S is moved between the holding portions 21b and 21a by the urging force of the springs of the holding portions 21a and 21b. It is sandwiched elastically.

  Thus, after the shaft S is held by the holding means 20, the holding end 22a is rotated by the rotary motor 31 of the rotating means 30, thereby rotating the shaft S about the axis.

  The injection means 50 located at the upper end starts to inject a uniform amount of paint P from the nozzle 51. The belt 43 is moved via the pulleys 42a and 42b by driving the vertical movement motor 41 of the vertical movement means 40, and the nozzle mechanism 52 provided on the base 44 moves downward along the guide shaft 45 at a constant speed. Start.

  In the process of moving the nozzle mechanism 52, as shown in FIG. 4, the nozzle 51 that is directly above the axis of the shaft S follows the hypotenuse of the guide cam 62 as the nozzle mechanism 52 moves downward. As indicated by the dotted lines, the nozzle 51 moves laterally along the guide rail 61.

  The paint P is sprayed in a conical shape from the nozzle 51, and the density of the paint P at the center of the cone is large and the density of the surroundings is small. Therefore, as the position of the nozzle 51 is changed to the lateral movement, the center of the spray of the paint P from the nozzle 51 with respect to the shaft S is shifted in the circumferential direction. Therefore, the amount of paint to be applied to the shaft S is such that gradation coating becomes thinner as the central portion from the nozzle 51 deviates from the axis of the shaft S, that is, as it goes downward. In addition, since the shaft S rotates around the axis, uniform coating is performed in the circumferential direction of the shaft S.

  When the nozzle mechanism 52 finishes moving from the upper end to the lower end, the spraying of the paint P from the nozzle 51 is stopped and the painting is finished. However, if necessary, the nozzle mechanism 52 is further moved from the lower end to the upper end, and the lateral movement of the nozzle mechanism 52 is performed in the opposite direction. A good gradation coating can be obtained.

  In this case, since the nozzle mechanism 52 returns upward by the second coating, the coating of the next shaft S can be started as it is. In the case where the painting is completed only once, it is necessary to drive the vertical movement motor 41 and return the nozzle mechanism 52 from the lower end to the upper end every time painting is completed.

  After the coating is finished, the shaft S is pushed downward, the upper end Sa of the shaft S is removed from the holding end 22a, and the lower end Sb is removed from the holding end 22b, whereby the coated shaft S is obtained.

  The paint that has not adhered to the shaft S remains in the paint booth 11 as a mist, but is sucked into the exhaust booth 12 through the filter 13 and further discharged to the outside through the duct 14 by the exhaust fan 15. .

  In the first embodiment, the nozzle 51 with a fixed injection direction is translated in the lateral direction with respect to the shaft S, and the gradation center from dark to light is gradually removed by gradually removing the injection center of the nozzle 51 from the axis of the shaft S. However, in Example 2, the nozzle 51 is fixed at a predetermined position, and coating is performed by changing the angle of the injection direction.

  In the second embodiment, the structure in which the nozzle mechanism 52 moves up and down along the axis of the shaft S is the same as that in the first embodiment. However, the nozzle mechanism 52 including the nozzle 51 is rotatable in the horizontal direction with respect to the base 44. It is said that.

  FIG. 5 is an enlarged configuration diagram of a main part of the second embodiment, and the same reference numerals as those in the first embodiment indicate the same members. That is, the base portion 44 is provided with a shaft portion 46 that faces in the vertical direction, and is inserted into a hole provided in the nozzle mechanism 52, and the nozzle mechanism 52 is centered on the shaft portion 46 in the horizontal direction perpendicular to the axis of the shaft S. It can be turned.

  As the deflecting means 60, a right-angled triangular guide cam 62 is used along the vertical direction in substantially the same manner as in the first embodiment, and the profile surface 53 on the nozzle 51 side of the nozzle mechanism 52 extends along the oblique side of the guide cam 62 during vertical movement. To slide. A tension spring 64 is provided between the nozzle mechanism 52 and the base 44, and the nozzle mechanism 52 is urged so as to be drawn toward the guide cam 62 via the follower surface 53.

  In the second embodiment, when the nozzle mechanism 52 is located at the upper side, the nozzle 51 faces the shaft S as shown in FIG. 6, but as it moves downward, the nozzle 51 is in the horizontal direction as indicated by the dotted line. The direction of the nozzle 51 is gradually changed to a direction away from the shaft S around the shaft portion 46. As a result, the amount of paint applied to the shaft S at the upper end Sa decreases as it goes toward the lower end Sb, and a shaded gradation coating on the shaft S is realized. In addition, what is necessary is just to implement in the same way as Example 1 also when performing coating twice.

  In the above-described first and second embodiments, the nozzle 51 is maintained at an approximately equal distance with respect to the shaft S in the injection state, so even if the direction of the nozzle 51 is deviated from the axis of the shaft S, The size of the paint particles that reach the shaft S is substantially constant, and the variation in the size of the paint particles does not cause uneven coating.

  In the first and second embodiments, in order to perform gradation painting in which the upper part of the shaft S is dark and the lower part is light, the deflection of the ejecting means 50 by the deflecting means 60 is increased as the ejecting means 50 moves downward. However, gradation painting in which the concentration of the paint increases as it progresses downward can also be implemented by reversing the movement of the ejection means 50 by the deflection means 60. In addition, in the case where the gradation is not applied only in one direction along the axis but, for example, a pattern gradation is applied so that the upper and lower ends of the shaft S are dark and the intermediate portion is light, the shape of the guide cam 62 is changed. Can be realized.

  Further, in the first and second embodiments, it has been described that the coating is performed by arranging the shaft S in the vertical direction, but the shaft S may be positioned in the horizontal direction. Further, in the embodiment, the position of the shaft S is fixed and the injection unit 50 is moved. However, the injection unit 50 may be fixed and the position of the shaft S may be relatively moved.

  As described above, while the nozzle mechanism 52 in the injection state moving up and down at a constant speed is changed in a direction orthogonal to the axis of the rod-like body such as the shaft S, for example, in the horizontal direction, by the rod-like body coating apparatus of the first and second embodiments. By spraying, it is possible to efficiently produce the same gradation-painted rod-shaped body.

DESCRIPTION OF SYMBOLS 10 Frame 11 Painting booth 12 Exhaust booth 20 Holding means 21a, 21b Holding part 30 Rotating means 31 Pipe rotation motor 40 Vertical movement means 41 Vertical movement motor 43 Belt 44 Base 45 Guide shaft 46 Shaft part 50 Injection means 51 Nozzle 52 Nozzle Mechanism 60 Deflection means 61 Guide rail 62 Guide cam S Shaft

Claims (4)

  A rod-like body coating apparatus that performs gradation coating along the axial direction on the surface of a rod-like body to be coated, the holding means for holding both ends of the rod-like body, and the rod-like body rotating around the axis A rotating means for injecting, a spraying means for spraying a uniform amount of paint to the surface of the rod-shaped body rotated by the rotating means, and the spraying means moving at an equal speed along the axis of the rod-shaped body And a deflecting means for deflecting the jetting means relative to the axis so as to linearly move in a direction perpendicular to the axis of the rod-like body as the moving means moves. Characteristic stick-shaped body coating equipment.   A rod-like body coating apparatus that performs gradation coating along the axial direction on the surface of a rod-like body to be coated, the holding means for holding both ends of the rod-like body, and the rod-like body rotating around the axis A rotating means for injecting, a spraying means for spraying a uniform amount of paint to the surface of the rod-shaped body rotated by the rotating means, and the spraying means moving at an equal speed along the axis of the rod-shaped body And a deflecting means for rotating and deflecting the direction of the nozzle with respect to the axis in a direction perpendicular to the axis of the rod-like body in accordance with the movement by the moving means. Body painting equipment.   3. The stick-shaped body coating apparatus according to claim 1, wherein the spraying means is deflected following the guide cam.   The rod-shaped body coating apparatus according to claim 1, wherein the rod-shaped body is a tubular body.

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