JPH04116017A - Work reversing device - Google Patents

Abstract

PURPOSE:To facilitate composition and control of the reversing device for electronic parts and so on by disposing a rotor provided with a work holding part at a prescribed pitch in a circumferential direction on both sides of a conveyer belt, and interlocking the rotor with a pitch feeding index device to rotate it intermittently and reverse it. CONSTITUTION:A work W1 which is delivered by action of intermittent drive of a conveyer belt 1 with its front side facing upwards by a pitch feeding index device 3 is engaged into a work holding recessed part 91 in a rotor 2 which fits the work holding recessed part 91 to a carrier surface and stands by. Then a conveyer belt 1 stops and the rotor 2 rotates. Hence, the work W is raised by the intermittent drive pitch of the rotor by the pitch feeding index device 4, and the next work holding recessed part 9 coincides with the carrier surface of the conveyer belt and is at a standby posture, so that a work W held previously is delivered onto the conveyer belt 1 at a reversing posture.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a work reversing device used for reversing the front and back surfaces of a work such as an electronic component.

<Prior Art> Conventionally, as this type of work reversing device, devices configured as shown in FIG. 7 and FIG. 8, respectively, have been known.

A work reversing device as a first conventional example shown in FIG. 7 includes a first conveyor belt 21 and a second conveyor belt 22,
Place between these! The work reversing drum 23 is provided with a work reversing drum 23, and work holding recesses 24 are formed on the outer periphery of the work reversing drum 23 at predetermined pitches along the circumferential direction. Therefore, the workpiece W placed on the first conveyor belt 21 and transported falls and is received by the workpiece holding recess 24 of the workpiece reversing drum 23. After being reversed by a rotating operation over a period of time, the receiver is transferred to the second conveyor belt 22.

Further, the work reversing device as a second conventional example shown in FIG. 8 has a first conveyor belt 21 and a second conveyor belt 2.
2 and placed between these! Work reversing chuck 25
The workpiece W conveyed by the first conveyor belt 21 is reversed by the workpiece reversing chuck 25 and then transferred to the second conveyor belt 22.

<Problems to be Solved by the Invention> By the way, in the work reversing device as the first conventional example, the first and second conveyor belts 21, 22 and the work reversing drum 23 are independent of each other, and the individual sides are Generally, the drive is controlled by a motor 26, 27, 28 as a driving device, which increases the number of component parts, increases cost, and makes it difficult to control the position of the workpiece W during transportation. This has resulted in the inconvenience that a means for detection is required, which complicates control.

In addition, the work reversing device of the second conventional example has similar disadvantages, and the structure and control of the work reversing chuck 25 are complicated, which may lead to troubles such as chucking errors and workpiece breakage. was.

The present invention was devised in view of these circumstances, and although the configuration and control are relatively simple,
It is an object of the present invention to provide a work reversing device that can easily perform more accurate reversing work.

<Means for Solving the Problems> In order to achieve the above object, the work reversing device according to the present invention has a conveyor belt that straightly conveys works placed at predetermined pitches, and both intermediate portions of the conveyor belt. A rotating body placed on the side and a pitch feed indexing device that alternately drives these intermittently! In addition, on the outer periphery of the rotating body, an even number of workpiece holding recesses into which the workpieces are inserted and held are formed at predetermined pitches along the circumferential direction. It is characterized by interlocking and coupling of two prime movers.

According to the above configuration, first, the workpiece conveyed by the intermittent drive of the conveyor belt by the pitch feed indexing device is inserted into the workpiece holding recess of the waiting rotating body, and this workpiece The drive of the conveyor belt is stopped by the engagement of the conveyor belt. Then, rotational driving of the rotary body is started, and the workpiece is conveyed along the circumferential direction by a predetermined pitch by the intermittent drive of the rotary body by the pitch feed indexing device. Then, when this rotational drive of the rotating body is repeated intermittently and the workpiece holding recess reaches the position where it matches the conveyor belt again, the workpiece has been reversed, and this reversed workpiece is It will be transferred onto a conveyor belt and continue to be transported.

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

Figure 1 is a side view showing the schematic configuration of the work reversing device, Figure 2
The figure is a plan view thereof, and FIG. 3 is a cross-sectional view showing the schematic configuration of the main part along line mm in FIG. 2.

The workpiece reversing device according to this embodiment includes a conveyor heald 1 that conveys the workpiece W in a straight line, a rotating body 2 that reverses the workpiece W, and a pitch feed indexing device 3.4 that alternately drives these intermittently. .

The conveyor belt 1, which conveys the workpiece W placed face up along the horizontal direction from the right to the left in the figure, is hooked between the drive boob IJ 5 and the idler pulley 6. Positioning protrusions 7 are provided at predetermined pitch positions on the conveying surface of the conveyor belt 1 to lock the work W being conveyed.

Also, on both sides of the midway portion along the length of the conveyor belt 1, rotating bodies 2 are arranged to turn over the workpieces W, which are facing upward and have been conveyed by the conveyor belt 1, and turn them downward. The rotating body 2 includes a pair of rotating plates 2a, 2 which face each other with the conveyor belt 1 in between and are driven to rotate around the left and right horizontal axes 2 in synchronization with each other.
a, and these rotating plates 2a, 2a
The rotation support shafts 2b, 2b supporting the are rotatably held by the frame 8. At this time, the height positions of the respective axis P of the rotating plates 2a, 2a constituting the rotating body 2 are set so as to substantially match the conveying surface of the conveyor belt 1. On the outer periphery of each rotary plate 2a, an even number of workpiece holding recesses 9 are formed in the shape of slits that are slightly wider than the thickness of the workpiece W and deep enough to stably engage the workpiece W. They are formed at predetermined pitches along the circumferential direction. Therefore, the protruding portions of the work W protruding from both the left and right sides of the hair belt 1 are inserted into these recesses 9, and the work W itself is inserted into the recesses of the rotary plates 'la and 'la facing each other. 9.9 will be held.

Further, pitch feed indexing devices 3.4 that alternately and intermittently drive the conveyor belt 1 and the rotating body 2 are connected to each other via a timing belt 10, and the output shaft 3a of the pitch feed indexing device 3 is A drive pulley 6 of the conveyor belt 1 and a motor 11, which is a single driving device, are interlocked. In addition, the output shaft 4a of the pitch feed indexing device 4
The rotation support shafts 2b, 2b of the rotating plates 2a, 2a, which constitute the rotating body 2, are connected to each other via a timing belt 12.12. These pitch feed indexing devices W3, 4 are synchronously controlled so as to be driven alternately and intermittently by the motor 11, as shown in the timing chart of FIG.

Next, the timing chart shown in FIG. 4 and the timing chart shown in FIG.
The operation of the work reversing device according to this embodiment will be explained based on the operation explanatory diagrams shown in ) to (d) and the enlarged perspective view of the main part shown in FIG.

First, as shown in FIG. 5(a), the pitch feed indexing device? The face-up workpiece W1, which has been conveyed by the intermittent drive of the conveyor held 1 by the conveyor held 1lf3, is placed in the workpiece holding recess 9 of the rotary plate 2a, which constitutes the rotary body 2, and is aligned with the conveyance surface. ．． 9. will be involved. Then, due to the engagement of the workpiece Wl, the drive of the conveyor belt 1 is stopped and the rotational drive of the rotating body 2 is started, and as shown in FIG. 5(b), the recess 95,
The workpiece Wl that has entered the space 9□ is lifted by a predetermined pitch by the intermittent drive of the rotating body 2 by the pitch feed indexing device 4, and is conveyed along the circumferential direction.

When the workpiece W1 has been lifted by a predetermined pitch, as shown in FIG. 5(c), the recess 9. which holds the workpiece W4 which has been previously inserted and whose front and back surfaces have been reversed. ．．
9. reaches a position where it matches the conveyance surface of the conveyor belt 1, and this inverted workpiece W4 is transferred onto the conveyance surface of the conveyor belt 1 again. Therefore, the fifth
As shown in Figure (d), when the intermittent drive of the conveyor belt 1 is restarted after the drive of the rotating body 2 is stopped, the workpiece W4, which is face down, continues to be conveyed toward the rear. become.

<Effects of the Invention> As explained above, according to the work reversing device according to the present invention, the work is reversed in the middle of a single conveyor belt, which simplifies the configuration and reduces the number of parts. , it becomes possible to aim at cost reduction. Also,
Since the conveyor belt and the rotary body are only driven alternately, relatively simple control is required, and the effect that more accurate reversing work can be easily performed is obtained.

[Brief explanation of drawings]

1 to 6 relate to embodiments of the present invention, in which FIG. 1 is a side view showing a schematic configuration of a work reversing device, FIG. 2 is a plan view thereof, and FIG. 3 is an I-[ [FIG. 4 is a timing chart showing the operating state of the pitch feed indexing device; FIG.
a) to (d) are operation explanatory diagrams showing the operating states of the workpiece reversing device, and FIG. 6 is an enlarged perspective view of the main part of the workpiece reversing device. Furthermore, each of FIGS. 7 and 8 is a side view showing a schematic configuration of a conventional work reversing device. In the figure, numeral 1 is a conveyor belt, 2 is a rotating body, 3.
4 is a pitch feed indexing device, 9 is a recess for holding a workpiece, 1
1 is a motor (driving device), and W is a workpiece.

Claims (1)

[Claims] (1) A conveyor belt (1) that transports workpieces (W) placed at predetermined pitches in a straight line, and a rotating body (2) placed on both sides of the conveyor belt, which are alternately and intermittently driven. Pitch feed indexing devices (3, 4) are provided, and an even number of work holding recesses (9) into which the work (W) is inserted and held is formed on the outer periphery of the rotating body (2) in the circumferential direction. A workpiece reversing device is characterized in that a single driving device (11) is interlocked and connected to the pitch feed indexing device (3, 4).