JPS60177922A - Slider drive apparatus of sheet supply apparatus of press - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a slider drive device for a sheet feeding device of a press in which the slider has two motion stop positions for transferring parts to be conveyed. Regarding.

[Prior art and problems]

Various drives are already known for driving slider drives of sheet feeding devices.

In German Patent No. 123,931 and German Patent Application Publication No. 1,271,067, a combined cam-rack drive is known as a slider drive. Kneading requires a large space requirement in the direction of motion, has the disadvantages of manufacturing problems in the case of large strokes due to the combined racks, considerable loading on the pinion, and high acceleration forces that limit the stroke.

Federal Republic of Germany Patent Application No. 23 Fl 8539
In the publication, a device for driving a conveying slide in the form of a link transmission is known (4), in which the drive movement is connected to the transmission of the press in order to drive a feed slide guided on the slide holder. The fire is extracted from the device and transmitted via a bevel gear to the drive crank of the link transmission. The coupling of this transmission is extended beyond the end point of the oscillation and is dimensioned so that the coupling curve drawn at the coupling point has a curve area of the same curvature at two points located mutually apart from each other. ing. The movement of the connecting point is transmitted to the slider via the operating rod, the rond, the square lever and the joint plate, which engage the pivoting pin of the pivoting lever.

Federal Republic of Germany Patent Application No. 1777355 (
3) There is known a work conveyance device between adjacent presses in which the slider drive device is composed of a cam-link combined drive device. A follow-up roller rotates along the circumference of a cam driven on the press machine side via various drive mechanisms, and this follow-up roller is directed downwards to a swinging arm whose upper end is hinged to a horizontal axis. Supported.

The lower end of the swing arm is connected to a yoke formed by a pair of operating rods gripping the transport slider. The driven roller is pressed against the cam by the piston rod of the pneumatic cylinder. When the control axis rotates,
The cam acts on the driven roller and causes a rocking movement directed in the backward and forward directions of the rocking arm and, depending on the shape of the cam, a corresponding movement of the gripper arm in accordance with a predetermined program of horizontal movement. cause movement in the corresponding direction.

Both of these complex drive systems have complex calculations for problem analysis, distortion of the motion course, high manufacturing and assembly costs, large space requirements (and large acceleration forces that limit the stroke (4)). It has its drawbacks.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a slider drive device that has a small structure, has less wear, is easy to inspect, and can achieve a large slider stroke with a large number of strokes.

It is an object of the present invention that by using only one motion transmitting element between the cam and the belt pulley, a simple transmission of the required motion V for the advance and retraction of the slider is achieved without any errors, and that the original belt drive k) configuring the slider drive such that the device has a slip-free σ) profile;

[Summary and effects of the invention]

According to the invention, this object can be achieved by the measures described in the characterizing part of claim 1.

Further embodiments meeting the objectives of the invention are described in claims 2 to 5.

A reduction gearing rotates the cam. Through the interlocking movement of the square lever σ) controlled by a cam, the square lever moves in oscillatory rotation together with the segment gear. This rotational movement is transmitted to the binion and the belt pulley connected to it. The steel belt and the slider connected thereto are thereby reciprocated and the desired linear feeding movement is achieved.

〔Example〕

The present invention will be described in detail below based on embodiments shown in the drawings.

The slider is driven by its own drive or by the press machine drive via a reduction gear. This rotational movement is achieved by a cam transmission 4 consisting of an operating cam and an opposing cam.
can be communicated directly to A row 23 arranged on the rectangular lever 1 is located in relation to this cam transmission 4.

A square lever l is rotatably supported on the frame at its rotation point 2, with the square lever 1 having a segment gear 5 at one arm end. This segment gear 5 meshes with a pinion 6 of a belt pulley 7. Steel belts 8 are arranged on the circumference of the belt pulley 7 in mutually opposite directions and offset from each other, these steel belts 8 being connected to the guide 1x lug slide IO by a connecting element 9. These two steel belts 8 are each guided via a deflection roller 12. The deflection rollers 12 are each resiliently supported on a frame and are provided with an overload protection device. Stops are also arranged to prevent unwanted displacements. The slider is driven either directly via a speed-controllable direct current motor or via a press machine drive. This drive drives a reduction gearing. This reduction gearing also provides low-speed movement. The actuating cam and the counter cam receive rotational motion directly from the reduction gearing. This rotational movement is transmitted to the square lever 1 via the cam surface and the roller 3. The square lever l is the cam lift (stroke amount)
2. It transmits the vibration and rotates at a constant angle with the segment gear 5 around the center point of the temporary gear.2. Since this rotational motion is quickly transmitted to the pinion 6, a stroke motion is performed in the form of a rotation angle variable.

A binion 6, vibrating in both rotational directions, is rigidly connected to a centrally arranged belt pulley 7, which rotates about this binion with its angular variation. The difference in diameter between the pinion 6 and the belt pulley 7 causes an amplification of the stroke. Due to the connection of slider 0 to steel belt 8, its movement is now that of slider 1.
The actuating cam and the opposing cam, which are transmitted to the slider 0 and thereby obtain the desired linear feed movement, have movement processes such as resting, advancing and retracting relative to the slider. The acceleration rate and delay area in the cam are determined from an optimal viewpoint (function: for example, θ1n to the 5th power).

When the cam list, the lever gear ratio, and the reduction ratio between the segment gear 5 and the pinion 6 are constant, the stroke of the slider can be selected by changing the diameter of the belt pulley 7.

The steel belts 8 are each guided around elastically supported deflection rollers 12 in a sliding direction.

An internal balance between the connecting piece on the belt pulley 7 and the connecting point on the slider 10 occurs. Depending on the position of the slider 10, one or the other steel belt 8 is no longer unwound or wound around the belt pulley 7, so that a swing between the two end fittings takes place.

This device works as follows.

If an external force, for example an acceleration force, is generated on the slider 10 during forward or backward movement of the slider, this device will not be able to cope with this, since the device is balanced and will cause a displacement of the forward or backward turning roller against the spring force. The second deflection row 212 which has been moved is likewise displaced by the spring force, ie the device is in a floating state. A displacement of the deflecting roller 12 is prevented by an adjustable stop 16. The stopper 16 is formed as an overload prevention device [11] that prevents damage to the belt and adjusts load fluctuations without stopping the press machine. The slide lO is connected to the steel belt by means of a connecting element 9 of the form according to paragraph 2. This connecting element 9 opens without damage in the event of an overload, such as breaking a steel belt. After removing the fault, the slider 10 is connected to the steel belt 8.

In order to prevent an excessively large displacement of the deflection roller 12 when the connecting element 9 is opened, a further stop is provided for the spring tension force.

When trying to swap belts, the belt should be P/L.

can be easily loosened by a bolt exchanger. For this purpose, a corresponding deflection roller 12 is deflected by an eccentric shaft against a steel belt tension spring to loosen the steel belt 8.

As shown in Fig. 4, belt drive i1? The device can also be used with only one deflection roller 12 for the steel belt 8. In this case, the role of the second deflection roller 12 is performed by the belt pulley 7. The tensioning of the steel belt 8 is carried out by the suspended mass G, and the support of the steel belt 8 during loading is carried out by the support collar 17.

In order to further prevent damage, the connecting element 9 has a pin-like member [3] closed in a semicircle and placed in the center. J throat 14
It is formed in the shape of a tong, having an opening that communicates with a circular opening or hole I5 that continues through the opening. As already mentioned, in the event of an overload in the event of a failure, the retaining element 13 can become undone from the retaining element, thereby preventing damage to the device.

[Brief explanation of drawings]

1 is a side view of the slider drive, FIG. 2 is a top view of the slider drive, FIG. 3 is a detailed view of the connecting elements, and FIG. 4 is a belt drive with only one deflection roller inside. 1... square lever, 2... rotation center, 3... roller, 4... cam transmission device, 5... segment gear,
6... Binion, 7... Bell) Fu-1)-18...
・Steel belt, 9... Connection element, lO...
Slider. Applicant's agent Kiyoshi Inomata Continued from page 1 Inventor Jerg, Roland Inventor Berner, Raupach 9044, Karl Marx-Sustadt 1, Luststrasse, 24 Democratic Republic of Germany 9071, Karl Rummarsustadt, Ikenrhein, 19 Procedural amendment writing rudder) March 27, 1985 Commissioner of the Patent Office Manabu Shiga 1 Indication of the case 1981 Patent application No. 221898 2 Name of the invention Press Sea 1 ~ Feeding device Slider drive device 3 Relation to the case of the person making the amendment Patent applicant Volkseigenerbe Trieb, Kobinat, Umformtechnik, Paherbel 1~
, Barnke "Erfurt 4 Agent February 6, 1985 (Delivery date February 2-6, 1985), 7 Contents of amendment 5-/

Claims (1)

[Claims] 1. The drive of the cam transmission with the actuating cam and the countercam is directly connected to the press machine drive or its own drive, and the slider with the gripper element horizontally moves the guide track. A square lever (
1) is rotatably supported at a rotation point (2) fixed to the frame, is provided with rollers (3), and is equipped with a cam transmission (4).
) is interlocked and connected to the square lever (
1) has a segment gear (5) at the end of one arm, and this segment gear (5) meshes with the binion (6) of the belt pulley (7), causing the belt to go! J-(7)
A steel belt (8
) are arranged, these steel belts (8) are connected to the slider (]0) by means of a connecting element (9), and at least one steel belt (8) is elastically supported and provided with an overload protection device (]l ] Slider drive of the sheet feeding device of the press, characterized in that it is guided via a deflecting roller (12) arranged independently on the frame, cooperating with the connecting element ( 9), the pin-shaped member (13) closes in a semicircle and has a slit (
14) communicates with a circular opening (15) following through the 4
．． 2. The slider driving device according to claim 1, wherein the slider driving device is formed in the shape of a pincer with an opening. 3. The slider drive device according to claim 1, wherein the slider stroke can be variably adjusted by changing the diameter of the belt pulley (7). 4. The slider (10) moves forward or backward through one turning roller (■2), and the belt pulley (7)
2. Drive device according to claim 1, characterized in that the second deflection roller (12) is replaced by a second deflection roller (12). 5. The tension of the steel belt (8) is carried out by the suspended mass (G), and the tension of the steel belt (8) during loading is
5. The slider driving device according to claim 1, wherein support of step 8) is performed by a stopper (17).