JPH0612471U - Hanger for overhead conveyor for coating line - Google Patents

Abstract

(57) [Summary] Hanger of overhead conveyor for coating line [Purpose] To prevent paint from adhering to the lower end of the hanger arm and the pivotal joint of the transported object support frame. [Structure] The upper end of a hanger arm 14 is pivotally attached to a carrier 13 such that an upper horizontal support shaft and a bearing 23 of the upper horizontal support shaft are freely pivotable. At the lower end of the hanger arm 14, the transported object support frame 15
Lower horizontal support shaft 52 so that the vertical movement of 15 can be freely
And a bearing 42 of this. The lower horizontal support shaft 52 and the bearing 42 are covered with a lower open hollow cover 61 for forming an air reservoir.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hanger for an overhead conveyor used, for example, in electrodeposition coating of an automobile.

[0002]

[Prior art]

 As a hanger of this kind, the upper end of the hanger arm is pivotally attached to the carrier so as to allow the carrier to swing up and down, and the bearing for the upper horizontal support shaft and the lower end of the hanger arm. It is known that the article support frame is provided with a lower horizontal support shaft and a bearing for the article support frame, which are pivotally attached to the article support frame so as to freely swing upward and downward.

[0003]

[Problems to be solved by the device]

 In the above conveyor, the transported object is immersed in the paint or the like in the electrodeposition tank while being supported by the frame. Therefore, the lower horizontal support shaft and its bearing together with the lower end of the hanger arm and the conveyed object support frame are also immersed in the paint or the like. Then, paint or the like adheres to the pivotal structure portion of the support shaft and the bearing, so that the pivotal motion of the both becomes unsmooth, and the carrier and the conveyed object support frame cannot freely swing.

The object of the present invention is to prevent the paint from adhering to the lower horizontal support shaft and the bearing and to freely swing the carrier and the carrier support frame. To provide.

[0005]

[Means for Solving the Problems]

 The hanger of an overhead conveyor for a coating line according to the present invention comprises an upper horizontal support shaft and a bearing of the hanger arm, which is pivotally attached to the carrier so that the upper end of the hanger arm can be freely rocked in the vertical direction. An overhead for a painting line equipped with a lower horizontal support shaft pivotally attached to the lower end of the carrier support frame so as to allow the carrier support frame to swing freely in the vertical direction and its bearing. In a hanger of a conveyor, a lower horizontal support shaft and a bearing are covered with a lower open hollow cover for forming an air reservoir.

[0006]

[Action]

 In the hanger of the overhead conveyor for the coating line according to the present invention, the lower horizontal support shaft and the bearing are covered with the lower open hollow cover for forming the air reservoir, so that the lower horizontal support is used when the transported material is dipped in paint or the like. An air reservoir is formed around the shaft and bearing by the cover, so the lower horizontal support shaft and bearing are not allowed to come into contact with the paint.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In the following description, the front and back are the front side (left side in FIG. 2) on which the conveyed items are conveyed by the conveyor, and the rear side is the opposite side, and the left and right sides are the front and left sides. Left and right.

Referring to FIG. 2, the overhead conveyor includes a power rail 11 and a free rail 12 extending in the front-rear direction, a carrier 13 that moves along the rails 11 and 12, and a front-rear suspended from the carrier 13. It consists of hanger arms 14 and a carrier support frame 15 that is passed to the lower ends of these hanger arms 14.

The carrier 13 includes a front and rear trolley 21 that travels on the free rail 12, and a load bar 22 that is stopped by the trolley 21.

The load bar 22 is provided with front and rear upper bearings 23 at intervals in the front and rear direction. Further, a pair of leftward protruding balance arms 24 are provided inside the upper bearings 23, and a balance bar 25 is fixed to the tip of the balance arms 24.

Each of the front and rear hanger arms 14 is integrally formed in an inverted U shape when viewed from the front, and includes upper and lower horizontal members 31, 32 and right end portions of these horizontal members 31, 32. It is composed of a vertical member 33 connecting the same. The upper cross member 31 of the front hanger arm 14 is supported by the front bearing 23, and the upper cross member 31 of the rear hanger arm 14 is supported by the rear bearing 23. The vertical members 33 of the front and rear hanger arms 14 are almost vertical when viewed from the front, but when viewed from the left, the vertical members 33 of the front and rear hanger arms 14 are closer to each other as they go downwards. The vertical member 33 is inclined rearward, and the vertical member 33 of the rear hanger arm 14 is inclined forward about 3 degrees with respect to the vertical line.

Referring to FIGS. 3 and 4, vertical plate brackets 41 are fixed to the front and rear ends of the lower cross member 33 of the front and rear hanger arms 14, and the lower bearings 42 are attached to these brackets. Has been. The lower bearing 42 includes a bearing body 42a and a cap 42b.

The transported object support frame 15 is assembled from a shape steel in a rectangular frame shape. Corresponding to the lower bearing 42, horizontal support shafts 52 are provided at four locations on the frame 15 via U-shaped brackets 51 so as to project outward. It is sandwiched between and supported by the cap 43. Further, although not described in detail, a conveyed object fixing tool is provided at an appropriate position of the frame 15.

A cover 61 is attached to the arm side bracket 41. The cover 61 is in the shape of a hollow box without a bottom wall, and includes a flat top wall 62, trapezoidal left and right side walls 63, and downward tapered front and rear side walls 64. The cover 61 surrounds the bearing 42, the support shaft 52, and the frame-side bracket 51.

The cover 61 removes foreign matter falling on the bearing 42, the support shaft 52 and the like from above.

As shown in FIG. 5, the rails 11 and 12 in the introduction portion to the electrolytic cell E are inclined, and when the carrier 13 approaches the inclined portion, the carrier 13 is inclined. As a result, the transported object support frame 15 is also tilted.

When the article W is immersed in the paint in the electrolytic bath E, the hanger arm 14 does not substantially change its posture even if the article support frame 15 is tilted. Therefore, the cover 61 also remains upright without changing its posture. Even if the cover 61 is dipped in the paint, an air pocket is formed inside the cover 61. Therefore, there is no possibility that paint will adhere to the bearing 42, the support shaft 52 and the like.

If the paint adheres to the bearing 42 and the support shaft 52, the bearing oil film and the like may be destroyed, and smooth bearing operation may be hindered, but there is no concern. On the contrary, there is no concern that oil supply to the bearing will mix into the paint.

Further, in the electrolytic cell E, the hanger arm 14 forms an electric circuit, and electricity is supplied to the article W between the bearing 42 and the support shaft 52 via a jumper wire, but the jumper wire is disconnected. In this case, since the conveyed article W is suddenly energized through the metal contact between the bearing 42 and the support shaft 52, there is no possibility that the electrodeposition defect immediately occurs.

As shown in FIG. 6, even if the relative angle between the hanger arm 14 and the conveyed object support frame 15 is, for example, about 45 degrees, the front and rear side walls 64 of the cover 61 are formed in a tapered shape as described above. As a result, the transported object support frame 15 and the cover 61 do not interfere with each other.

As described above, the distance between the lower fulcrums is smaller than the distance between the upper fulcrums of the front and rear hanger arms 14. That is, the distance between the lower bearings 42 is smaller than the distance between the front and rear upper bearings 23. As a result of such a configuration, when the carrier 13 is tilted at a certain angle, the conveyed object support frame 15 is also inclined in the same direction, but the inclined angle of the conveyed object support frame 15 is larger than that of the carrier 13. growing. Assuming that the distance between the lower bearings 42 is about 20% smaller than the distance between the front and rear upper bearings 23, when the carrier 13 is tilted by about 25 degrees, the transported object support frame 15 is tilted by about 40 degrees. It will be. As a result, it becomes easy to incline the transported object support frame 15 at an optimum angle with respect to the electrolytic cell E without forcibly inclining the rails 11 and 12.

[0022]

[Effect of device]

 According to this invention, when the transported object is dipped in paint or the like, an air reservoir is formed around the lower horizontal support shaft and the bearing by the cover, so that the lower horizontal support shaft and the bearing cannot come into contact with the paint. It is possible to prevent paint and the like from adhering to the lower horizontal support shaft and the bearing, and it is possible to freely swing the carrier and the transported object support frame.

[Brief description of drawings]

FIG. 1 is a perspective view of a hanger according to the present invention.

FIG. 2 is a side view of the hanger.

FIG. 3 is a perspective view of a peripheral portion of a support shaft, a bearing, and a cover, which is an enlarged view of a part of FIG. 1.

FIG. 4 is a vertical vertical sectional view of the peripheral portion.

FIG. 5 is an explanatory diagram of a case where a conveyed product conveyed by the hanger is immersed in an electrodeposition tank.

FIG. 6 is an explanatory diagram showing a relationship between a conveyed object support frame and a cover.

[Explanation of symbols]

 13 Carrier 14 Hanger arm 23 Bearing 42 Bearing 52 Support shaft 61 Cover

Claims (1)

[Scope of utility model registration request] 1. An upper horizontal support shaft and a bearing 23 for supporting the upper end of a hanger arm 14 on a carrier 13 so as to allow the carrier 14 to freely swing in the vertical direction, and a lower end of the hanger arm 14. For a painting line, which is provided with a carrier support frame 15 and a lower horizontal support shaft 52 and a bearing 42 for pivoting the carrier support frame 15 so as to freely swing the carrier support frame 15 in the vertical direction. An overhead conveyor hanger for a coating line, characterized in that a lower horizontal support shaft (52) and a bearing (42) are covered with a lower open hollow cover (61) for forming an air reservoir.