JP2592185Y2 - Reciprocating coating equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a reciprocating coating apparatus used for continuous coating from a front surface to a top surface and a rear surface of an automobile body conveyed at a predetermined speed by a conveyor.

[0002]

2. Description of the Related Art A coating apparatus of this type is provided on a lifting frame by raising and lowering a lifting frame arranged perpendicularly to and above a conveying path of a workpiece according to a change in the shape of the workpiece. A constant coating distance is maintained between the coating machine and the painted surface of the object to be coated, and both ends of the lifting frame are supported by tilt shafts driven forward and reverse to swing the entire lifting frame back and forth. Thereby, the coating machine provided on the lifting frame is directly opposed to the coating surface of the object to be coated (JP-A-63-88074 and 88).
075, JP-A-4-225861).

[0003] A coating machine provided on an elevating frame can be reciprocated in a direction orthogonal to a conveying path of the object to be coated according to a coating width of the object to be coated. As a reciprocating mechanism for reciprocating a coating machine, a new method is known in which both ends of an elevating frame are suspended by a link that pendulums in the left-right direction, and the entire elevating frame is rocked in a direction orthogonal to a conveying path of a workpiece (Japanese Patent Application Laid-Open No. 1 of JP-A-63-88072
Figure), but in general, a coating machine is attached to a slider slidably provided along the longitudinal direction of the lifting frame, and the slider is reciprocated right and left by a chain sprocket mechanism mounted on the lifting frame. (FIG. 3 of the publication).

[0004]

However, the method of reciprocating the slider on which the coating machine is mounted along the longitudinal direction of the elevating frame causes a large impact when the slider is reversed. In a coating apparatus in which both ends are supported by a tilt shaft, there is a problem that rattling and damage occur in the bearing of the tilt shaft. SUMMARY OF THE INVENTION Accordingly, it is a technical object of the present invention to prevent a bearing of a tilt shaft supporting both ends of a lifting frame from being damaged by an impact generated when the slider is turned over.

[0005]

In order to solve this problem, the present invention provides a slider in which a coating machine is mounted on a lifting frame which moves up and down in accordance with a change in the shape of an object to be coated conveyed at a predetermined speed. And a reciprocating mechanism that reciprocates left and right along the longitudinal direction of the lifting frame,
In a reciprocating coating apparatus in which both ends of an elevating frame are supported by a pair of left and right tilt shafts for swinging the entire elevating frame back and forth so that the coating machine faces the coating surface of the workpiece, A shock absorber for absorbing kinetic energy generated in the longitudinal direction of the elevating frame to reduce shock applied to each tilt shaft is interposed between each bearing for supporting the elevating frame and the both ends of the elevating frame. It is characterized by having been done.

[0006]

According to the present invention, the kinetic energy generated at the time of reversal of the slider reciprocating along the longitudinal direction of the lifting frame is interposed between both ends of the lifting frame and the bearing of the tilt shaft supporting the both ends. Since the shock is absorbed by the shock absorber, the bearings of the respective tilt shafts are prevented from rattling or being damaged due to the impact when the slider is reversed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a front view showing a main part of a reciprocating coating apparatus according to the present invention.

In the drawing, reference numeral 1 denotes an elevating frame which moves up and down in accordance with a change in the shape of an object to be coated conveyed at a predetermined speed by a conveyor or the like. A plurality of coating machines 2 and 2 are mounted at required intervals. A reciprocating mechanism 4 for reciprocating the slider 3 right and left along the longitudinal direction of the lifting frame 1
Is installed. The reciprocating mechanism 4 includes the lifting frame 1
A chain sprocket mechanism in which a chain 8 is hung in parallel between a driving sprocket 6 and a driven sprocket 7 fixed to both left and right sides of the motor, and the driving sprocket 6 is rotationally driven by a motor 9 to be connected to the slider 8 3 is reciprocated along a slide rail 10 provided on the lifting frame 1. The reciprocating mechanism is not limited to the chain sprocket mechanism, but may be a screw feed mechanism or the like.

Reference numerals 11 and 11 denote each of the coating machines 2 and 2 by supporting both ends of the lifting frame 1 and swinging the entire lifting frame 1 back and forth as viewed from the transport direction of the workpiece. It is a tilt axis that faces directly to the painted surface.
Reference numerals 12 and 12 denote bearings for supporting the tilt shaft 11 so as to be movable in the axial direction. 13 and 13 are
This is a shock absorber that absorbs kinetic energy generated when the slider 3 reversingly travels on the slide rail 10 of the elevating frame 1 to reduce the impact applied to the bearing 12 of each tilt shaft 11. Each shock absorber 13 has its outer shell fixed to a pair of left and right brackets 14 and 14 that support the bearing 12 of each tilt shaft 11 at a fixed position, and absorbs and reduces mechanical shock by a spring, air pressure or hydraulic pressure. The action portion is in contact with the end of the lifting frame 1. Although not shown, each of the brackets 14 and 14 is configured to be attached to an elevating platform for elevating the elevating frame 1.

The impact caused by the reversal of the slider 3 reciprocating along the longitudinal direction of the lifting frame 1 is absorbed and mitigated by the axial movement of the tilt shafts 11 and the shock absorbing action of the shock absorbers 13. The tilt shaft 1 supporting both ends of the lifting frame 1
Damage such as rattling or damage to the bearing 12 due to excessive stress applied to the bearings 1 and 11 can be reliably prevented. Also, when the impact during slider reversal is reduced,
Damage caused by dust and dirt adhering to the lifting frame 1 and the slider 3 due to the impact falling on the painted surface of the object to be coated is also reduced. In the embodiment, each shock absorber 1
The outer shells of 3 and 13 are fixed to the bracket 14 and are provided integrally with the bearing 12 of the tilt shaft 11. On the contrary, the outer shells are fixed to both ends of the lifting frame 1,
The action portion may be in contact with the bracket 14 or the like.

[0011]

As described above, according to the present invention, in a reciprocating coating apparatus for reciprocating a slider equipped with a coating machine along an elevating frame, both ends of the elevating frame due to an impact generated when the slider is inverted. This has a very excellent effect that damage to the bearing of the tilt shaft that supports the shaft can be reliably prevented from being rattled or damaged, and at the same time dust and dirt attached to the lifting frame and the slider can be prevented from falling.

[Brief description of the drawings]

FIG. 1 is a front view of a main part showing an example of a reciprocating coating apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Elevating frame 2 ... Painting machine 3 ... Slider 4 ... Reciprocating mechanism 11 ... Tilt shaft 12 ... Bearing 13 ... Shock absorber

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-110062 (JP, A) JP-A-63-88073 (JP, A) Fully open 1988-62158 (JP, U) Really open 1984 36862 (JP, U) Hira 4-106665 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B05B 13/00-13/06

Claims (1)

(57) [Scope of request for utility model registration] 1. A slider (3) provided with a coating machine (2) is attached to a lifting frame (1) which moves up and down in accordance with a change in shape of an object to be coated conveyed at a predetermined speed. A reciprocating mechanism (4) for reciprocating left and right along the longitudinal direction is mounted, and a lifting frame (1)
Are supported by a pair of left and right tilt shafts (11, 11) that swing the entire lifting frame (1) back and forth so that the coating machine (2) faces the coating surface of the object to be coated. In the reciprocating coating apparatus, between each bearing (12) for supporting each tilt shaft (11) movably in the axial direction and both ends of the lifting frame (1), in the longitudinal direction of the lifting frame (1). Absorb the generated kinetic energy and move each tilt axis (1
Shock absorber (13) to reduce the shock applied to 1)
A reciprocating coating device, characterized by having interposed.