JPS6015309A - Conveying apparatus - Google Patents

Abstract

PURPOSE:To make a moving table transferable easily and surely along guide rail by an endless timing-belt having continuously arranged teeth and wound between a driving pulley having driving teeth rotated by drive unit and a driven pulley having driven teeth. CONSTITUTION:Positioned at one end side of a guide rail 5 is a pulley 6 having driving teeth 6b provided in an outer circumferential V-shaped groove 6a by securing the pulley 6 to an output shaft 1a of a drive unit 1, and a pulley 7 having driven teeth is positioned at the other end side of the guide rail 5, while an intermediate pulley 8 is provided between the pulleys 6 and 7. An endless timing belt 9 having continuously arranged teeth 9a formed along its inner and engaged with respective teeth of the pulleys 6 and 7 is wound over said pulleys 6 and 7, and the predetermined tensile force is supplied to the timing-belt by pressing down the outer surface of the timing-belt. Further, a part of the belt 9 is fixed to the moving table 4 by a clasp 10, and the moving table 4 is made transferable along the guide rail 5 following the transference of the belt 9.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is equipped with a robot that automatically performs welding work, skillful painting work, etc. on products during the production process, and moves the robot from a predetermined position to a predetermined position at a predetermined speed. The present invention relates to a conveying device for a movable table that is conveyed at a predetermined position and stopped at a predetermined position.

FIG. 1 is a perspective view showing a conventional conveying device of this type.
) is a drive device such as a reduction motor, which can rotate in forward and reverse directions and whose rotational speed can be adjusted, and a conventionally well-known ball screw (2) is connected to the output shaft (not shown) of this drive device (1). There is. (4) is a pair of parallel guide rails of a predetermined length (
5) (5) A movable table that can be slidably moved on the movable table (4).A predetermined robot (not shown) is placed on this movable table (4). A ball nand (3) through which the ball screw (2) is inserted is fixed, and as the ball screw (2) rotates, the guide rail (5)
(5) to move at a predetermined speed to a predetermined position and then stop at the predetermined position.

Since the conventional conveyance device is configured as described above, when the conveyance distance of the movable table is long, the conveyance device becomes long, and inevitably a ball screw (2) is required to move the movable table (4).
) also requires a long ball screw, making it extremely difficult to manufacture the long ball screw (2), which has the drawback of increasing costs.

The present invention was developed by focusing on this point, and instead of using conventional ball screws that are difficult to process, a so-called timing belt with a continuous tooth profile formed on the inner circumferential surface, and teeth around which this timing belt is wound are used. The purpose is to provide a conveying device that is easy to manufacture, can be implemented at low cost, and has high precision using an attached IJ. In other words, FIGS. 2 and 6 both show one embodiment of this invention. Although this is an example, the same reference numerals as in the conventional one (FIG. 1) mentioned above refer to the same constituent members, and the explanation thereof will be omitted.

(6) is fixed to the output shaft (1a) of a drive device (1) consisting of a reduction motor, etc., which is arranged at one end of the guide rail (5). A driving toothed boob (7) with gear-shaped teeth (6b) is arranged at the other end of the guide rail (5) (5), and has gear-shaped teeth formed in the ■-shaped groove on the outer periphery. The driven toothed pulley (8) is located between the drive toothed pulley (6) and the driven toothed pulley (7) and is connected to the guide rail (5) (5).
) is rotatably attached to one side of the intermediate boo IJ,
(9) is wound around the driving toothed boob 'J (6) and the driven toothed pulley (7), and is attached to the inner peripheral surface of the toothed boob I.
J (6) This is an endless timing belt formed with a continuous tooth profile (9a) that meshes with the teeth of (7), and this timing belt (9) has an intermediate pulley (8
), a part of the timing belt (9) is fixed to the movable table (4) by a stopper (l), and as the timing belt (9) is transferred, the timing belt (9) is fixed to the movable table (4). ) to the guide rail (5) (5)
It is configured to move at a predetermined speed and at a predetermined position 1 d along.

Since the conveyance device of the present invention is configured as described above, when the drive device jf (1) rotates the drive toothed pulley (6) in a predetermined direction at a predetermined speed, the drive toothed pulley (6) The timing belt (9) wrapped around the drive toothed pulley (6) is transported at a predetermined speed without slipping by the continuous tooth profile (9a) that meshes with the teeth of the drive toothed pulley (6), and the timing belt (9) is moved around the movable platform (4) along the guide rail ( 5) It can be moved at a predetermined speed to a predetermined position along (5).

Note that the intermediate pulley (8) has a timing bell l-(
In order to apply a predetermined tension to the timing belt (9), even if a drive toothed pulley (6) with a different outer diameter is used, the timing belt (9)
) is provided in order to always maintain it in a horizontal state in the longitudinal direction.

As described above, according to the present invention, the drive device (1)
An endless timing belt (9) having a continuous tooth profile (9a) is wound around the driving toothed pulley (6) and the driven toothed pulley (7), which are rotationally driven by the timing belt (9). Since the moving platform (4) is moved along the guide rails (5) (5),
Even when the conveyance distance by the moving table is long, there is no need for the long ball screw (2), which is extremely difficult to manufacture as in the past, and the manufacture is simple, can be carried out at low cost, and can be moved smoothly. Moreover, it has the excellent effect of providing a highly efficient conveying device.

In the above-mentioned embodiment, a robot is equipped on a moving table and the robot is transported from a predetermined position to a predetermined position at a predetermined speed. It is something that

[Brief Description of the Drawings] Fig. 1 is a perspective view showing a conventional conveying device, Fig. 2 is a perspective view showing an embodiment of the present invention, and Fig. 6 is a perspective view showing a drive toothed pulley and a timing belt. It is a partially enlarged sectional view. In the drawing, (1) is a drive device, (4) is a transfer unit, (
s) (5) is the guide rail, (6) is the drive toothed boob 1
), (7) is driven tooth gear IJ, (s) is intermediate boo 1
), (9) is a timing belt, (9a) is a continuous tooth profile, and α () is a stopper. Agent Masuo Oiwa

Claims (4)

[Claims] (1) Driving toothed pulley 17 rotationally driven by a driving device
A conveying device characterized in that an endless timing belt having a continuous tooth profile is wound around the driven toothed pulley and the timing belt moves a movable table along a guide rail. (2) An intermediate pulley is provided between the drive toothed pulley and the driven toothed pulley to apply a predetermined force to the timing belt wound around them and to maintain this timing in a horizontal state at all times in the longitudinal direction. The conveying device according to claim 1, characterized in that the conveying device is provided with: (3) The conveying device according to claim 1, characterized in that the moving table moves along a pair of parallel guide rails. (4) The conveying device according to claim 1, characterized in that a part of the timing belt is fixed to the movable table by a fastener.