JPS5922808A - Finger selector device - Google Patents

Abstract

PURPOSE:To aim at simple structure and cost reduction, by connecting with each other a plurality of fingers for adaptation to two kinds of vehicles and mounted on a shuttle bar, and allowing all the fingers to be simultaneously selected or switched by a single operation of a selector means. CONSTITUTION:Guide members 13 are fixed on upper ends of shafts 12 of lift members 11 standing at front and rear positions of a base 10, and a shuttle bar 15 is mounted on the guide members 13 through guide rollers so as to move in the front and rear directions. In such a feeding device between stages as arranged above, fingers 18 having shapes 18c, each of which is constituted of two different shapes, i.e., a receiving portion 18a for a vehicle A and a receiving portion 18b for a vehicle B, are rotatably mounted to the shuttle bar 15 by a plurality of pins 19. Each of the fingers 18 is connected with each other by a connecting rod 20, and is designed to be biased to one direction by a force of tension springs 24, thus forming a finger selector device F. The finger selector device F is designed to be operated by a finger selector means including an arm 30 rotatable by an operation of a cylinder 33.

Description

[Detailed description of the invention] The present invention relates to a finger switching device for conveyance.

Conventionally, a finger device for conveying automobile body parts, etc. in an inter-stage conveyance device is as shown in Fig. 1.
A shuttle bar 1.1 that reciprocates between adjacent stages by a drive means not shown in the figure has a plurality of fingers 2 formed with a workpiece receiver 2a for car A and a workpiece receiver 2b for car B, which can be rotated at required locations by a bin 3. Attached to both workpiece receivers 2
Finger 2 above bottle 3 in the middle of a * 2 b
A tension coil spring 4 is hooked to a protrusion 2c protruding from the surface of the shuttle bar l and a protrusion 1c protruding vertically below the bottle 3 of the shuttle bar l, and an opening is provided at the lower end of the finger 2 so as not to interfere with the protrusion IC. An actuating plate 2e is attached to the portion 2d. In addition, the shuttle bar 1 has a stopper 1a that positions the workpiece receiver 2a for the A car at a desired position on the upper surface of the shuttle bar 1 when the second finger abuts the side surface of the workpiece receiver 2b for the B car. Similarly, there is provided a stopper 1b for positioning the workpiece receiver 2b for car B. Incidentally, as shown in FIG. 2, a cylinder 6 having a rod 5 that acts on the actuating plate 2e of each finger 2 is disposed on the floor surface.

To switch the finger 2 from the work receiver 2a for car A to the work receiver 2b for car B, move the shuttle bar 1 forward the required distance, then move the shuttle bar 1 backward with the rod 5 protruding from the cylinder 6. When the actuating plate 2e is stopped by the rod 5, it is rotated in the forward direction, and the tension spring 4 extends and crosses the extension line 7 connecting the protrusion IC and the pin 3, but at the same time In order to pull the protrusion 2C, the workpiece receiver 2a for car A of the finger 2 sinks from the surface of the shuttleper 1, its side surface abuts against the stopper lb, and the workpiece receiver 2b for car B is positioned instead. At the same time, the actuating plate 2e separates from the rod 5, so
The rod 5 is retracted by operating the cylinder 6. Also, B
Switching from the car workpiece receiver 2b to the A-car workpiece receiver 2a is carried out in the same manner using the forward force of the shuttleper.

However, such conventional finger switching devices require a cylinder for each finger, resulting in a large installation area and the addition of floor space and piping, making it complicated and difficult to insert and remove the rod. There was a problem in that it took time and effort to make adjustments.

This invention was made in view of the above-mentioned problems, and aims to solve these problems by connecting the fingers with a connecting rod along the shuttleper and operating the fingers with a finger switching actuation means. The purpose is

An embodiment of the present invention will be described below with reference to FIG. 3 and subsequent figures.

First, the configuration will be described. The inter-stage transport device H has various mechanisms arranged almost symmetrically along two parallel lines facing the transport direction. do.

Lifts 11 are arranged on the stage base 10 at front and back positions with a required interval, and are held by guide rollers 14 of a traveling guide 13 fixed to the tip of the shaft 12 of the lift 11, and are driven by a reciprocating drive means (not shown). A shuttleper 15 that moves forward and backward is provided. Further, on the base 10, a required number of fixed workpiece receivers 16 for setting the workpiece W in the stage S are installed upright at positions that do not interfere with the shuttleper 15. (ii) A finger switching actuating means 17 is installed at a required position, and one unit can be used for both left and right hands.

Figure 4 shows the entire finger switching device F.
The shuttleper 15 has a groove 15a carved in the longitudinal direction.
Usually, about 2 to 4 fingers 18 are rotatably attached to each stage S by pins 19, each of which has two types of shaped parts 18c, a receiver 18a for the A car and a receiver 18b for the B car.

Further, each finger 18 is rotatably connected to connecting rods 20 attached on both sides by a pin 21 at the center and upper part of the A-vehicle receiver 18a and the B-vehicle receiver +8b. A tension coil spring 24 is hooked to an immovable pin 22 provided between immovable pins 19 and 19 of the shuttleper 15 and a pin 23 provided intermediate between pins 21 and 21 of the connecting rod 20. There is. In addition, each pin +9.21.23.22
Connect each pin to form a quadrilateral! The bin positions are selected so that the quadrilaterals 9, 21, 21, and 19 eventually form a real parallelogram, and each finger 18 moves synchronously. 25 is a connecting rod stopper that supports the connecting rod 20 for positioning the fingers 18. Additionally, a rotatable cam follower 26 is provided at the rear end of the connecting rod 20.
will be equipped.

The finger switching actuating means 17 includes a rotary shaft 29 inserted into a shaft hole 28 formed in a bracket 21 that is erected on the stage base 10, and an arm 30 that is integrally fixed to the shaft 29 at an intermediate portion. is the provision. The left arm (not shown) can also be fixed integrally to the rotating shaft 29 in symmetry with the arm 30, while a pin 32 is attached to the upper part of a bracket 31 erected corresponding to the bracket 27. A swing cylinder 33 is attached to the cylinder 33, and the tip of the rod 34 of the cylinder 33 and the lower end of the arm 30 are swingably connected via a pin 35, and a stopper 36 is connected to the arm 30. In order to determine the standing position of the bracket 30, brackets 270 are provided at required locations.

Next, the effect will be described. .

First, when transporting car A, as shown in FIGS. 3 and 5 (a), the shuttleper 15 with the car A receiver 18a of the finger 18 set is moved together with the traveling guide 13 by the operation of the lift 11. During the upward movement, the workpiece W is transferred from the fixed workpiece receiver 16 to the A-car receiver 18a and reaches the upper limit.

Then, the shuttleper 15 moves forward by a reciprocating drive means (not shown) and transfers the workpiece W to the next stage S.

When the forward limit is reached, the workpiece W is placed on the fixed workpiece receiver (not shown) of the next stage SI, and the finger 18 becomes free and reaches the lower limit. The shuttleper i5 moves back and returns to its original position. Car A is continuously conveyed by repeating the operations of raising a, moving forward b, descending C1 and retreating d. At this time, the arm 30 of the finger switching actuating means 17 is moved as shown in FIG. 5 (b). It maintains a forward leaning posture and has no relation to the connecting rod 20.

When producing car models at random, the finger 18 can be switched from car A to car B, from car A to car B, from car B to car B, and from car B to car B.
There are four formats, from car to A car.

When the same car type is in succession, the arm 30 is in a forward leaning position as shown in the above or in the same figure, but when switching from car A to car B, the arm 30 is in a forward leaning position as shown in the same figure (c). When the arm 3o is raised by operating the swing cylinder 33 at the lower limit and backward limit position of the par 15, the ridge surface of the arm 30 comes into contact with the cam follower 26 and pulls back the connecting rod 20, so that the finger 1
8 is switched to the B car. Note that when the switching is completed, the arm 30 is returned to its original position and kept in a forward-leaning posture.

When switching from car B to car A, as shown in FIG. If the cam follower 26 is kept in the upright position until it touches the stopper 36, the cam follower 26 will come into contact with the front surface of the arm 30 due to the retreating force of the shuttleper 15, pushing the connecting rod 20 forward. 18 is switched for vehicle A. When the switching is completed, the arm 30 is returned to the forward tilted position again.

A series of these changes is performed by signal management within the production line.

Next, the mechanical action of switching will be described based on Fig. 4.A
When switching from a car to a B car, the arm 30 is tilted forward.
When the cam follower 26 is raised and the cam follower 26 is pulled back, the connecting rod 20 moves upward away from the connecting rod stopper 25 according to the circumference drawn by the pin 21 with the immovable pin 19 in the center and meets the ridge. When the pin 21 passes through the vertical plane of the pin 21, it is attracted to the connecting rod stopper 25 by the downward biasing force of the tension coil spring 24, and therefore moves back by a certain distance to bring the B car receiver +8b of the finger 18 into a predetermined position. Position.

When switching from vehicle B to vehicle A, this reverse action causes the cam follower 26 to be fully pushed out by the backward force of the shuttleper 15 on the arm 30, which has been brought into an upright position, so that the shuttleper 15 On the other hand, in order to move forward, the A-vehicle receiver 18a of the shifter 18 rises and is positioned in the same manner as described above.

As explained above, this invention is equipped with a finger that is attached to a shuttleper and is compatible with two types of vehicles.
Since each finger is connected by a connecting rod and a single finger switching actuation means is used to switch all the fingers at once in one operation, a cylinder for each finger is not required, and the required floor space is significantly reduced. This simplifies the operation and adjustment of the machine.Furthermore, by making the shaped part removable from the fingers, it becomes easier to handle the production of next-generation workpieces, and furthermore, it is possible to easily handle the production of next-generation workpieces. It is possible to produce a wide variety of workpieces, and has remarkable effects in terms of productivity, work efficiency, and cost savings.

[Brief explanation of the drawing]

FIG. 1 is a front view of a conventional conveying finger device, FIG. 2 is a schematic plan view of a conventional inter-stage conveying device, and FIG. 3 is a front view of one stage of the inter-stage conveying device of the present invention. Figure 4 is also a front view of the finger switching device;
Figure 5 is an explanatory diagram of the finger switching situation; Figure (A) is a diagram showing the movement of the shuttleper, Figure (B) is a diagram showing the case of continuous transport of A car, and Figure (C) is a diagram showing the movement of the shuttleper. Figure (e) shows the case of switching from vehicle B to vehicle B. Figure (e) shows the case of continuously transporting vehicle B. Figure (e) shows the case of switching from vehicle B to vehicle A. FIG. H...... Inter-stage transport device F...
...Finger switching device W...Work S...Stage Sl...Next stage 13...Traveling guide 15... Shuttle bar 17... Finger switching actuation means 18...
・Finger 18c... Shape 20... Connecting rod 24... Tension coil spring 25... Connecting rod stopper 26... Cam follower Fig. 1 Figure 2

Claims (1)

[Claims] In an inter-stage conveyance device comprising a traveling guide, a shuttle bar that reciprocates between adjacent stages guided by the traveling guide, and means for reciprocating and driving the shuttle bar, each stage of the shuttle bar Fingers having shapes corresponding to a plurality of types of work shapes are rotatably supported at locations corresponding to the shapes of the workpieces, and connecting rods are provided to connect these fingers, and the connecting rods are used to switch the shapes of the shapes. 1. A finger switching device comprising a finger switching actuation means for reciprocating and positioning the finger.