JPS58167038A - Carrying device between presses - Google Patents

Abstract

PURPOSE:To make stop position accurate and enable high speed transportation by moving a carriage that holds a pressed product by a loop-shaped timing belt of small mass. CONSTITUTION:This device consists of a guide rail 12 provided between presses 1 and 2, a carriage 13 that moves along the rail 12 and holds a pressed product and a driving device which is connected with the carriage and moves 1t. A pressed product formed by a press 1 is carried to another press 2 by above- mentioned guide rail 12. The driving device is constituted of a timing belt 18 arranged in loop-form along the rail 12. Stop position is made accurate and high speed transportation is made possible by this device.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveying device installed between presses to convey a pressed product formed by one press to the other press, and in particular a conveyor device installed between the presses, such as a dirt conveyor or the like in the space between the presses. This invention relates to an improvement in a conveying device that is compact in size for installation.

For example, when forming door frames, etc., one press is used to press-form the door frame from the outer part of a plate-shaped blank, and simultaneously form a second press product from the inner part. It will be done.

Therefore, six types of products are delivered from the press: the first pressed product, the second pressed product of the door frame, and their remaining waste materials. The first pressed product is then sent to the next press by a conveyance device, the second pressed product is sent to another process by a waste material conveyor, etc., and the waste material is carried out to a scrap chute and processed through another route. Ru. In such a case,
In order to install a device for transporting the first press product, which is the main workpiece, as well as the second press product and waste materials, ensure as wide a space as possible, such as under the main workpiece transport device between presses. There is a need to.

This main workpiece conveyance device is also called a shuttle conveyor, and is of a compact type.

Conventionally, this type of shuttle conveyor is composed of a guide rail provided between presses, a carriage that is moved along the guide rail and supports the pressed product, and a drive device that is connected to the carriage and moves it. ing. The drive device employs a chain drive system, a link drive system, a rack and pinion drive system, a cam and link drive system, or the like. However, the chain drive system has the disadvantage that the stopping position is inaccurate due to the large inertia and large elongation of the chain, and it is also prone to wear and has a short service life. Additionally, noise and vibration were a problem, making it unsuitable for high-speed drive. In recent years, as presses have become more capable, automatic high-speed conveyance has become possible through the adoption of DC servo systems and NC.
It is required that the stroke between IM presses be sent in 1.0 seconds, but the chain type described above has poor stopping accuracy, and the stopping error increases as it is used. Not suitable for transportation.

In addition, in the case of the link drive system, rank ant-binio/drive system, cam-azimuth link system, etc., the drive device and machinery are complicated and the frame is large, making it difficult to secure space between the presses and making them dirty. It becomes impossible to install material conveyors, etc.

Therefore, an object of the present invention is to provide a compact shuttle conveyor suitable for high-speed conveyance. Next, embodiments of the conveying apparatus according to the present invention will be described with reference to the drawings. FIG. 1 shows a conveying device a according to the present invention disposed between presses, and this conveying device transfers a pressed product formed in a first press (1) to a second press (2). It is meant to be transported. (3) is an unloader, which plays the role of transferring the pressed product to the carriage of the transport device, and (4) is the unloader that transfers the pressed product on the carriage to the press (2).
This is a loader that is attached to the

As shown in Figures 2 to 4, the conveyor is
Frame 0υ placed between the presses and frame 01
) A pair of guide rails (121) are installed on the carriage CI□□□ which is moved along the guide rail 02
and a drive device for moving the carriage (1).The front and rear parts of the carriage include an upper roller (19), a lower roller (161, and a side roller is provided.

The feature of the present invention is that the drive device for moving the carriage θ is
Timing belt (I8) generally arranged in a loop
The timing belt (181 is hung between toothed wheels O-L (n) on both sides, and one toothed wheel a9 is driven by a drive body (5) which is preferably a DC motor. The timing belt 11 is driven via a suitable transmission member 16).
Preferably, it is placed in the middle of the zX port 2.

The connecting portion between the carriage (13) and the timing belt zero mallet is configured to prevent excessive force from being applied to the timing belt. Therefore, in a preferred form, as shown in FIGS. 5 to 7, the connecting portion is equipped with a spherical bearing. (2υ is used, i.e. timing pel) Q16 is a spherical bearing (2υ is used.
It is connected to the carriage a3 via υ.

When the spherical bearing Cυ is used in the connection part as described above,
As shown in FIG. 5, it is preferable that the timing belt α mark is connected to the carriage 0 at twelve points, in which case the timing belt (1υ itself is not in a complete loop shape,
Both ends of the strip are close to each other (that is, there is a separation point), and each end is connected to the carriage via a spherical bearing (21). With this configuration, each end of the timing belt 0 seconds acts independently and can be freely bent to any angle by the spherical bearing (21), so the timing belt) (connection part 181 and its adjacent parts) It is possible to avoid applying excessive force to the

As shown in Figures 5 and 6, the connection between the spherical bearing (21J) and the end of the timing belt 0 is a flange part (2) protruding from the bearing 12υ and a similar type that fits into the waveform of the timing belt U. This is done by using a corrugated backing plate (23), and the end of the timing belt is held between them and fixed with bolts and nuts ff141 or the like.

As seen in FIG. 7, these flange portions (221
The contact plate (c) is wider than the timing belt A8,
It is fixed with bolts and nuts on both sides of the timing belt. In the illustrated embodiment, a spherical bearing/Qυ is used, but the timing belt is 0 seconds and the carriage angle (1
Other joint members may be used as long as they can perform the same function in connection 3).

During operation, when the press product formed by the first press (1) is placed in a predetermined position by the unloader (3) on the carriage t13) positioned below it, the motor (5) starts operating 1- The timing belt (country) is driven through the first transmission member (6), and the carriage faces the second press (
2) and press the rotor (4) provided on the press (2).
) to attach the pressed product on the carriage to the press. These series of operations are performed by an appropriate control system such as an NC.

As described above, in the conveying device according to the present invention, the carriage (
A timing belt (13) is used as a drive device to drive the timing belt (13).
8), the mass is smaller than that of a chain, and the elongation is extremely small, so the stopping position is accurate. And unlike chains, it does not stretch as much as it is used, so it has a long lifespan. - In the example, when moving a distance of 3.1 m in 1.0 seconds, the allowable stop error is ±1.5111, but with this conveyance device, it is ±0.5
The stopping error is extremely small, ff1ll, and the chain system has a margin of ±2.03°, which shows that it has extremely high stopping accuracy. Furthermore, wear and noise are not a problem.

Therefore, according to the present invention, the carriage is driven by a timing belt with a small mass, the stopping position is accurate, and the service life is long, making it suitable for high-speed conveyance.
A shuttle conveyor capable of high-speed conveyance using a DC servo system can be realized in accordance with the capacity of the press.

[Brief explanation of drawings]

FIG. 1 is a front view showing an application example of a conveying device to which the present invention relates, FIG. 2 is a plan view of a conveying device according to an example of the present invention, FIG. 6 is a side view thereof, and FIG. 4 is the same as that shown in FIG. Line AA sectional view,
5 is a sectional view taken along line BB in FIG. 2, FIG. 6 is an enlarged partial sectional view of a portion of FIG. 5, and FIG. 7 is a bottom view of the portion shown in FIG. 6. In the figure, 1.2...press, 10...transport device, 12...
Guide rail, 13... Carriage, 183, Timing belt, 21... Spherical bearing patent applicant Fuji Engineering Co., Ltd. 18

Claims (1)

[Claims] (1) In order to convey a press product formed by one press to the other press, a guide rail provided between the presses, and a carriage that is moved along the guide rail and supports the press product. , a conveyance device including a drive device coupled to the carriage to move it, the drive device comprising a timing belt disposed generally in a loop along the guide rail. . (2. The conveying device according to claim 1, wherein the timing belt is provided between the pair of guide rails.