JPS61238363A - Apparatus for rotating article of trolley conveyor to be painted - Google Patents

Abstract

PURPOSE:To make it possible to accurately and certainly rotate an article to be painted at an arbitrary position and time, by providing a rotary apparatus, which moves simultaneously with a conveyor and reciprocates within a predetermined moving range, in a painting conveyor line. CONSTITUTION:The slide frame provided to a rotary apparatus moves along with a conveyor when a follower pin 6 as an engaging means is engaged with the conveyor. In this state, an air high rotor 12 as a rotary means is acted on the rotatable hanger 2 provided to the conveyor to rotate the hanger 2 by a predetermined amount and the direction of an article to be painted is altered. After the finish of alteration, because a press wheel 13 is retracted and a follower wheel 8 is released, a motive power wheel 9 reversely races to prepare for the next rotation. The above mentioned operation is repeated necessary times and, when painting is completed, the follower pin 6 is retracted and the rotary apparatus is released from the conveyor and returned to the original position by a return cylinder 5.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an object rotating device for a trolley conveyor for factory line painting, in which the object to be coated is conveyed by a trolley conveyor while being painted.

<Conventional technology> Conventionally, the following methods have been used as a device for rotating objects on trolley conveyors used in factory line painting, but each method has condensation disadvantages, and is particularly suitable for robot painting If so, a new rotating device is desired.

That is, for example, the method of attaching a sprocket foil to a part of the hanger shown in FIG.
Applications were limited to continuous rotation (object to be coated), and conveyor tact feeding and rotation of the object to be coated by θO° were not possible, nor was it possible to control the direction of the object to be coated.

In addition, as shown in Figure 4 (B), some of the hangers have Crusaders and 90
``With the indexing configuration, the crusader can be 8
The method of rotating 0° is limited to continuous conveyor feeding.
It could not be used for the tact feeding method. In addition, due to the mechanism, the object to be coated cannot rotate smoothly, and depending on the shape and weight of the object, there may be significant shaking due to reaction during rotation.
Even with the indexer attached, it rotated more than 90' due to inertia, and the action of the indexer returned it to the 90° position.

Furthermore, in this case, the 80° rotation position is determined by the mounting position of the fixing pin, making it difficult to rotate it to an arbitrary position each time.

Furthermore, as a method for rotating at an arbitrary position, there is a fourth method.
The method of forcibly rotating a cross-loaded hanger 90° using another drive source, as shown in Figure C, is applicable to conveyor tact feeding systems, and in this case, the air cylinder is fixed, making it difficult to use continuous feeding systems. . In this case, mechanically, the shaking of the object to be coated during rotation is the same as that described for the indexing type, and it is necessary to prevent shaking when stopped, so accuracy in the stopping position of the hanger is required.

<Problems to be Solved by the Invention> In view of the above-mentioned circumstances, the present invention provides a trolley conveyor that is ideal for robot painting, which can rotate accurately, reliably, at any position and at any time, whether the conveyor is continuous feed or tact feed. The purpose of this invention is to provide a device for rotating an object to be coated.

Means for Solving Problems> The present invention provides a rotating device that moves simultaneously with the conveyor in a painting conveyor path, and the rotating device rotates a slide placed on a slide rail arranged on the conveyor rail. The frame is provided with an engaging means consisting of a follower pin that engages with the conveyor at a predetermined position, and a driving means that operates the engaging means, and a rotating source that sandwiches the driven wheels of the hanger on both sides of the slide frame. A movable wheel and a presser wheel fed out by a presser cylinder are arranged, the shaft of the motive wheel is transmitted to a rotary feeding means of a high rotor, and a slide frame is provided with a retracting means to reciprocate within a predetermined movement range. Become.

Due to the above structure, when the engaging means engages the conveyor, the slide frame provided with the rotating device (high rotor) moves together with the conveyor, and there is no relative movement between the two.

In this state, a rotating means is activated on the rotatable hanger provided on the conveyor, and the hanger is rotated by a predetermined amount (90 degrees or 18 degrees) to change the direction of the object to be coated. When the change is completed, the rotating means is removed from the hanger, returns to its original position and prepares for the next rotation, and when the next rotation command is received, the drive section of the rotating means engages with the hanger again, rotating the hanger, and then again. Return to original position.

After the rotational drive is completed, the engagement means with the conveyor is disengaged by another command, and the retraction means is activated, and the slide frame equipped with the rotation means retreats to the original position and engages with the next hanger. , waits for rotational drive.

<Example> The present invention will be described below based on the drawings of the example.

3 is a conveyor rail with a part of the hanger 2 suspended using a known movement method, a slide rail 3 is provided above the predetermined position (painting position) of the conveyor rail 1, and the conveyor rail is placed on the upper surface of the slide rail 3. A slide frame 4 having a U-shape as if straddling the frame 1 is attached with a running roller 18 interposed therebetween. In this case, the sliding distance of the slide frame 4 is generally the same as the bunker pitch.
The design is such that painting is completed while the object to be coated moves by the length of the hanger pitch, the slide frame 4 is quickly returned to its original starting position, and it waits for the arrival of the next object to be coated. That is, a return cylinder 5 is installed at the rear end of the slide frame 4 as a retracting means for returning it to its original position. Further, on one side of the slide frame 4, there is a follower pin 6 which serves as an engagement means for following the conveyor 1', a follower pin cylinder 7 which serves as a drive means for the follower pin 6, and a follower pin cylinder 7 which is suspended from a portion of the conveyor rail. The driving wheel 9 of the rotating means is placed on the side of the driven wheel 8 provided on the primary hanger 2, and the driving wheel 9 is connected to the rotating means provided on the upper surface of the slide frame 4 via a vertical driving shaft 10 and a transmission gear 11. A high rotor 12 for 90° rotation is installed, and a presser wheel 13 is provided on the other side of the slide frame 4 as a holding means for holding the driven wheel 8 together with the motive wheel 9. A presser wheel cylinder 14 is disposed at the base end of the presser wheel cylinder 14, and these components as a whole constitute a rotating device 15 for the object to be coated. In this case, for the high rotor 12 for 80'' rotation, a commercially available drive device such as a rotary actuator combining a rack with two serial cylinders and a pinion can be used.

In this case, for safety reasons, it is preferable to use a pneumatic or hydraulic device for the drive unit. Further, the driven wheel 8 at the lower end of the second hanger 2 is rotatably attached, and when pressed by the presser wheel 13, comes into contact with the prime mover 9 and rotation is transmitted thereto.

Incidentally, the lower surface of the driven wheel 8 is provided with an indexer 18 (index).

Next, to explain the operation, first, the secondary hanger 17 to which the object to be coated A is directly attached is attached to the primary hanger 2 placed at the lower end of the driven wheel 8.
When the slide frame 4 is moved by the conveyor 1' and reaches the standby position of the slide frame 4, this position is detected by an appropriate detector (not shown), and this signal causes the follower pin 6 to move by the actuation of the follower pin cylinder 7. The following pin b
When the slide frame 4 hits the scissors 2a of the primary hanger 2, it becomes integral with the primary hanger 2, and the conveyor 1
It slides on the slide rail 3 following the movement of '. At this time, the driven wheel 8 is ready to rotate 90'' at any time.

In this state, when one side of the workpiece A has been painted and it is necessary to rotate the workpiece A by 90°, if a separate electric signal is sent, the presser wheel cylinder 14 is activated and attached to the lower end of the workpiece A. The two presser wheels 13 press against the driven wheel 8 of the primary hanger 2, and the driven wheel 8 and the motive wheel 9 on the back are brought into contact and pressed. Next, this prime mover 9 has an air high rotor 12
The object to be coated A is rotated by SO°. When the rotation of the object to be coated A is completed, the presser wheel 13 is moved backward (evacuated) by the return movement of the presser wheel cylinder 14, and the driven wheel 8 is released and becomes free. Therefore, the prime mover 9 is empty and reversed, ready for the next rotation. Repeat the above operation as many times as necessary (see Figure 3).

When the painting is completed and the final rotation is completed, the follower pin 6 is retracted, the rotating device 15 on the slide frame 4 side is separated from the conveyor 1', and the free rotating device 15 is attached to the base end of the slide frame 4. It is returned to the original starting position by the return cylinder 5.

Of course, a prerequisite for this method is that the rotating device must be returned to the starting position before the next object to be coated arrives at the starting position. The remaining amount must be considered as the time that can be used for actual painting.

<Effects of the Invention> As mentioned above, the coating rotating device of the trolley conveyor of the present invention is designed so that the slide frame of the rotating device moves together with the hanger as the hanger moves, so that continuous feeding and tact feeding are possible. To obtain a rotating device for a trolley conveyor that can be used for any of the trolley conveyors without changing the existing conveyor line. Furthermore, since the hanger and the rotating device move together, the drive is reliable and there is little shaking. Moreover, when they are moving together in response to a rotation command signal, they can be rotated at any position at any time, and the number of rotations is also arbitrary. For example, there are surfaces that take time to coat depending on the shape of the object to be painted, and
Since there is a surface that does not touch the surface, the ability to rotate arbitrarily has the effect that the operator or robot can save time waiting for the object to be coated to rotate, and so-called lost time can be eliminated.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the main parts of the present invention, Fig. 2 is a longitudinal sectional front view of the same, Fig. 3 is an explanatory view showing the rotary coating state, Fig. 4A,
B and C are explanatory diagrams of conventional rotation systems. 1st order lI+1 conveyor rail, l'*@@conveyor, 2-・φ-next hanger+, 3・fist・slide rail, 4・fist・slide frame 5@・defogging cylinder,
6...Following pin 7 * * *Following pin cylinder,
8.Fist driven vehicle, 9.Motor vehicle, No. 12.-9
High rotor for 0° rotation, 13... Presser wheel, 14
0θ / presser wheel cylinder patent applicant Iwata Painting Machinery Co., Ltd. 7.51 Figure 3 Figure 11! 2 Figure 4

Claims (1)

[Claims] 1. A slide frame that moves forward and backward along the conveyor rail of a trolley conveyor in which rotatable hangers are arranged at appropriate intervals is placed on the conveyor rail, and a part of the moving hanger is engaged with this slide frame. The slide frame is provided with an engaging means such as a detachable follower pin, a driving means for the engaging means, a rotating means for rotationally driving the hanger when following the conveyor, and a holding means, and also for retracting the slide frame that has advanced on the conveyor rail. A trolley conveyor rotating device for rotating a coated object, characterized in that it is equipped with a means for returning the object.