JPS63196416A - Parts transport device - Google Patents

Abstract

PURPOSE:To prevent damage to parts by making a waveform to conduct a wave motion movement in the transport direction with parts held by a transport direction control means on a table and a working element group in a waveform configuration in a transport device of parts having a curved surface of a cylindrical state, etc. CONSTITUTION:Works 12 are made to be placed along a side wall 13 of a table 11, and are interposed between the wall 13 and a wave trough of a waveform composed by a pin 24 group. And driving of a motor 15 causes a rotation of a shaft 16 and this makes pins 24 to be reciprocally moved via an eccentric cam, not shown, connecting rod 19, arm part 18, and piston rod 20. At this time, the waveform forms a wave motion moving in the transport direction as a phase of the eccentric cam is deviated successively. Therefore, works 12 are pushed by the waveform along the wall 13 and moves on the table 11. This constitution enables transporting and positioning without damaging work piece.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to parts having curved surfaces such as spherical, cylindrical, conical, etc.
The present invention relates to a component transport device for transporting and positioning a workpiece (hereinafter referred to as a work), and particularly relates to a component transport device suitable for transporting and positioning a disk-shaped thin workpiece with low mechanical strength.

(Prior Art) Conventionally, there have been devices as shown in FIGS. 5 and 6 as devices for conveying workpieces having curved surfaces such as spherical or cylindrical shapes.

This conveyance device includes a table 2 on which a workpiece 21 is placed, a shaft 3 with a spiral groove carved therein, a motor 4, and a gear 5. It is composed of gear 6. Then, the work 1 is fitted between the threads 7 of the shaft 3, the tool 21 is restrained by the curved surface of the valley 8 of the shaft 3 and the side wall 9 of the table 2, and the shaft 3 is rotated to convey the work 1 along the side wall 9. , for positioning. .

(Problems to be Solved by the Invention) In the above-mentioned conventional device, it is fine if the warp 21 has a large mechanical strength, such as a cylindrical shape, but it is fine if the warp 21 has a strong mechanical strength, such as a cylindrical shape. When trying to convey the fragile workpiece 10, the rotational force F of the roller 7 is applied to the workpiece 21.
0 as a bending moment, increasing the risk that the workpiece 10 would be damaged.

(Means for Solving the Problems) In view of the above-mentioned problems, the present invention provides a component transport device that can transport and position not only spherical and cylindrical workpieces but also disc-shaped thin workpieces without damaging them. The purpose is to

The configuration of the present invention in accordance with such an object includes a table on which a component is placed, a regulating means provided on the table along the component transport direction, a rotational drive source, and a device connected to the rotational drive source for reciprocating rotational movement. A converting mechanism group that converts into a linear motion, and a group of operating terminals that are connected to each converting mechanism and perform reciprocating linear motion on a table in a direction perpendicular to a component conveying direction, and the operating terminal group advances in the component conveying direction. The gist is that the reciprocating linear motions of the operating terminals are linked to each other so as to form a series of waveforms, and that the parts are held between the troughs of the waveforms and the regulating means.

(Function) According to the above configuration, when the driving force of the rotary drive source is transmitted to the actuation terminal group via the conversion mechanism group and a reciprocating linear motion is given to each actuation terminal, the troughs of the waveform formed by the actuation terminal group The parts clamped by the regulating means follow the progress of the waveform, are pushed by the peaks of the waveform, and are conveyed while sliding on the table.

(Example) Embodiments of the present invention will be described in detail below based on the drawings.

In Figures 1 and 2, 11 is a table on which a disk-shaped thin workpiece 12 is placed;
A side wall 13 is installed along the longitudinal direction of the table 1 at the left end of the table 11 as a regulating means, and approximately at the center of the table 11 there are a number of holes extending in a direction perpendicular to the side wall 13.
4... are provided through the holes at a constant pitch. Reference numeral 15 denotes a motor as a rotational drive source, and a large number of eccentric cams 17, 17, . . . are fixed to the shaft 16 at the same pitch as the slits 14. Each eccentric cam 17 has a ring-shaped funecti with an arm 18 protruding from it, and a grod 19.
19... are rotatably fitted. One of these eccentric cams 17 and one connecting groove 1' is the motor 15.
This constitutes a group of conversion mechanisms for converting the rotational motion of the motor into reciprocating linear motion. 20.20... are piston rods, metal 21.22 provided on the back surface of the table 1.
The arm portion 18 is rotatably supported at its right end by a connector 23. Further, each piston loft 20 is provided with a pin 24 serving as an operating terminal, and each pin 24 is loosely passed through the slit 14, and its tip is connected to the table 1.
It stands out above 1.

These bins 24, 24... are each piston rod 2 in total.
0 in the same position, while the bins 24, 24,
Each eccentric cam 17, 1 forms a series of waveforms.
7... are fixed to the shaft 16 with their phases sequentially shifted. Particularly in this embodiment, the eccentric cams 17 are shifted in phase by 45 degrees from each other, and the eight bins 24 form one period of the wave. Bin 24.24 like this
... are arranged, the motor 15 rotates and each bin 24
When the pins reciprocate all at once within the slit 14, the waveform formed by each pin 24 sequentially moves on the table 11.
proceed. Further, the waveform dimensions are set such that the workpiece 12 is held between the side wall 13 and the troughs of these series of waveforms by appropriately adjusting the pitch of the pin 24 and the reciprocating linear movement distance.

Next, the operation of this embodiment will be explained.

A disk-shaped thin workpiece 12 is sandwiched between a corrugated trough formed by a III wall 13 and a pin 24, and a motor 15 is driven to rotate a shaft 16. Then, the eccentric cam 17 fixed to the shaft 16 rotates around the shaft 16,
The rotational motion of the shaft 16 is converted into a reciprocating linear motion by the action of the eccentric cam 17, the connecting rod 19, and is transmitted to the piston rod 20 via the arm portion 18, so that the pin 24 reciprocates within the slit 14. As mentioned above, each eccentric cam 17 sequentially
Since each pin 24 is fixed to the shaft 16 with a phase shift, when each pin 24 reciprocates at the same time, a series of waveforms formed by the pins 24 progresses, and at that time, the workpiece 12 reaches 11t!
It slides on the table 11 along the side wall 13 while being restrained by the I-wall 13 and the troughs of the waveform and being pushed by the peaks of the waveform.

FIG. 3 schematically shows the conveyance of the workpiece 12 and the progress of the waveform. Initially, the workpiece 12 is connected to the pin 24 of the pins 24a, 24b, 24c, which form one cycle of the waveform 25.
b, the pin 24f, and the side wall 13. Next, as the motor 15 rotates, the pins 24a...24d corresponding to half a cycle move forward toward the workpiece 12 one after another, and the pins 24e...-24 corresponding to the remaining half cycle move forward toward the workpiece 12.
h retreats from the work 12. As a result, the waveform 25 as a whole advances in the direction of arrow A. When the pin 24b moves forward and pushes the workpiece, the pin 24f pushes the workpiece 1.
Next, pin 24c is located near workpiece 1.
When pressing 2, the pin 24g is located near the workpiece 12. In this way, as the waveform 25 advances, the workpiece 12 is conveyed on the table while being always restrained between the troughs of the waveform and the side walls 13 and being pushed by the peaks of the waveform. When the pin 24 pushes the workpiece 12, a compressive load acts on the warp 212, but almost no bending moment acts on it. In addition, the position of the pin that contacts the workpiece 12 is brought as close as possible to the peak of the waveform 25, and a rotatable roller is fitted to the pin 24.
If the frictional resistance between the workpiece 12 and the pin 24 is reduced, the compressive load will be further reduced, so even a fragile thin workpiece 12 such as an IC board can be transported without being damaged.

In the above-described embodiment, one period of the waveform 25 was formed by eight pins 24a to 24h, but the pins 24 constituting one period
By increasing the number of pieces 4, the workpiece 12 can be transported even more easily.
Pin 2 is used to ensure smooth operation, and conversely to simplify the mechanism.
It is also possible to reduce the number of 4 pieces. Further, although the eccentric cam 17 and the connecting rod 19 are used as an example of a mechanism for converting rotational motion into reciprocating linear motion, it is of course possible to use other mechanisms.

Furthermore, as a regulating means, another set of pins may be arranged in a waveform instead of the side wall 13, and the workpiece 12 may be held between the two sets of waveforms. That is, as schematically illustrated in FIG. 4, a waveform of 25° consisting of pins 24 a', 24 b'...
If the workpiece 12 is conveyed while being restrained by the waveform 25'', which is made up of pins 24a'', 24b'' and has a phase difference of 180 degrees from the waveform 25'', the compressive load acting on the workpiece 12 can be further reduced. Can be made smaller.

(Effects of the Invention) According to the present invention, a group of actuation terminals that come into contact with and separate from the circumferential surface of the workpiece while repeating reciprocating linear motion in a direction perpendicular to the workpiece conveyance direction are arranged in a waveform, and the workpiece is moved between the troughs of the waveform and the regulating means. As the waveform progresses, the workpiece is conveyed while being pushed by the peaks of the waveform, so almost no bending moment is applied to the workpiece, and the compressive load that is applied is small, so even fragile thin workpieces can be transported. It is now possible to transport and position the product without damaging it.

Furthermore, by adjusting the array pitch and linear movement distance of the operating terminals to match the waveform dimensions to the workpiece, it is possible to flexibly respond to changes in the workpiece dimensions without changing each mechanism itself.

Furthermore, even if there is an obstacle such as a wall orthogonal to the transport direction in the middle of the workpiece transport path, such as when transporting a workpiece through a wall that partitions two rooms, the actuation terminal will not move in the direction perpendicular to the workpiece transport direction. Since it performs reciprocating linear motion, it is possible to transport a workpiece through an obstacle by simply arranging operating terminals on both sides of the obstacle and forming a hole in the obstacle through which the workpiece can pass.

[Brief explanation of the drawing]

Figure #41 is a plan view showing an embodiment of the present invention, Figure 2 is a sectional view of the same embodiment, Figure 3 is an explanatory diagram of the operation of the embodiment, and Figure 4 is another embodiment of the present invention. An explanatory diagram of the operation of the example, FIG. 5 is a plan view of the conventional device, and FIG. 6 is the same (side view of the conventional device, and Figure $1 is an explanatory diagram of the operation of the conventional device. 11...Table 12... Work 13...(
Side wall (restricting means) 15...Motor (rotational drive source) 17...Eccentric cam 19 (conversion mechanism) 19...Connecting rod 2 (conversion mechanism)
4.24a-24h, 24a'-24h', 24m''~
24h''...(operating terminal) bottle 25.25'. 25''...Waveform

Claims (3)

[Claims] (1) A table on which a component is placed, a regulating means provided on the table along the component transport direction, a rotational drive source, and a converter connected to the rotational drive source to convert rotational motion into reciprocating linear motion. a group of mechanisms, and a group of operating terminals that are connected to each conversion mechanism and perform linear reciprocating motion on a table in a direction perpendicular to the direction of transport of parts, and the group of operating terminals forms a series of waveforms that advance in the direction of transport of parts. A component conveying device characterized in that the reciprocating linear motions of each operating terminal are correlated with each other, and the component is held between the troughs of the waveform and the regulating means. (2) The component transport device according to claim 1, wherein a side wall is installed on the table as the regulating means. (3) As the regulating means, a waveform having a phase different from the waveform by 180 degrees is formed by another group of actuating terminals, and the component is held between the troughs of both waveforms. The parts conveyance device according to item 1.