JP2608159B2 - Platen press equipment - Google Patents

Description

The present invention relates to a platen press device, and more particularly, to a platen press device for processing or processing a laminated or sheet-like material.

(Prior Art) A sheet material comprising a gripping rod displacement device for fixing a sheet material, a movable lower platen and a fixed upper platen, and a sheet material supplied between the two platens and a movable platen control mechanism. Are well known.

 The movable platen has a number of control mechanisms.

As one of the well-known control mechanisms, the operation of the movable platen is performed by a crankshaft driven at a low speed and operated on a crank lever via a connecting rod.

According to another mechanism, the operation of the movable platen is performed by a direct drive cam integral with the crank lever performed by the crank lever. This device uses a cam mounted on a shaft located between several groups of crank levers. In this embodiment, the movements caused by the cams are transmitted to a group of crank levers by rolling elements provided on said group of crank levers, which crank levers are used to adjust the travel stroke, speed and acceleration conditions of the lower platen. Actuated according to the cam profile being formed.

However, this device has drawback
This drawback must be equipped with a mechanism to ensure that the rolling elements of the cam are always in contact, complicating the device and making it difficult to assemble.

In particular, known devices that address this include a control shaft that is driven by a rotating shaft that receives its action from the drive via a worm wheel mechanism or a locking drive.

The device has a locking drive consisting of a rotating toothed segment on a rotating shaft secured to a wheel at a given distance from the rotating shaft and a sprocket secured to said rotating shaft.

According to the rocking drive, when the worm rotates at a constant speed, the crankshaft becomes slower at a position below the platen, becomes faster at a position above the fixed platen, and is timed to the operation of the gripping rod.

In this way, the operation of the lower platen is adapted to the operation of the sheet feeding element in each machining cycle of the platen. This sheet feeding element is constituted by a gripping drive rod.

In these gripping rods, the gripping pressure surfaces are arranged to improve aerodynamic properties on both sides of the upper and lower platens of the gripping rod.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a locking drive having the above characteristics without the use of toothed segments and sprockets.

The present invention is configured by a device in which a locking drive device transmits an operation from a wheel to a crankshaft, transmits an operation to a crankshaft with respect to a wheel shaft, and the axis of the crankshaft is deviated with respect to the wheel shaft. Have been.

According to a preferred embodiment of the present invention, a device for transmitting motion from the wheel to the crankshaft is provided at one end of the crankshaft, the drive projection being offset with respect to the axis of the crankshaft, and the projection of the wheel. Is formed by a groove formed on a side surface adjacent to the groove and in which the protrusion is fitted.

In this way, when the wheel rotates at a constant speed,
Since the crankshaft is eccentrically coupled, the crankshaft is driven at a variable speed. During this operation, the crankshaft driving projections operate periodically along the wheel grooves.

Further effects can be further enhanced by providing the driving grooves and projections with a sliding and rolling device that facilitates their displacement and vibration.

According to another embodiment of the invention, the device for transmitting the movement from the wheel to the crankshaft comprises one or more levers connected via a connecting rod.

Embodiment FIG. 1 shows an apparatus for driving a lower platen in a normal platen press. In the lower platen 1,
A semi-cylindrical connecting part 2 is attached to a lower part thereof. Only two of them are shown in the drawing. Each of the semi-cylindrical connecting portions 2 serves as an upper sheet of the crank lever 3.

The crank lever 3 is formed by an upper arm 4 and a lower arm 6. The upper arm 4 has a cylindrical connecting portion 5 connected to a lower portion thereof, and the lower arm 6 has another cylindrical connecting portion 7 connected to a lower portion thereof. Have been. The lower portion of the crank lever 3 is mounted on a support 8 mounted on a tapered wedge 9. During the constant speed rotation operation, the crankshaft 10
The connecting rod 11 transmits the horizontal movement in the front-rear direction to the crank lever 3 and drives the lower platen 1 to move vertically.

FIG. 2 shows a variable operation control mechanism of the crankshaft 10. In particular, the control mechanism is constituted by a wheel 12 driven by a worm 13.

As shown in FIG. 3, a wheel 12 is mounted on a rotating shaft 14, which is a tenon or projection of the crankshaft 10.
It has a long groove 15 into which 16 is inserted.

The wheel 12 increases or decreases its rotation speed depending on the distance 17 between the rotation axis of the wheel 12 and the rotation axis of the crankshaft 10, but rotates once in each processing cycle of the press and one rotation in each processing cycle. The crankshaft 10 is driven so as to cause the rotation.

In this way, the movable lower platen 1 comes closest to the fixed upper platen 1a, and the tenon or protrusion 16
Is located at the outermost position of the long groove 15, the movable lower platen 1 is farthest from the fixed upper platen 1a,
The crankshaft 10 is connected to the movable lower platen 1 so that the tenon or protrusion 16 moves relatively faster than when the tenon or protrusion 16 is at the innermost position of the long groove 15.
During the rotation, the movable lower platen 1 and the fixed upper platen 1a are separated from each other at 270 °.
At 90 °, the movable lower platen 1 and the fixed upper platen 1a come into contact with each other, and the movable lower platen 1
Can be adjusted with respect to the movement of the gripping rod 18.

In this way, the operation of the lower platen 1 can be coordinated with the operation of the gripping rod 18 on the sheet at each processing cycle of the press. The supply element consists of a gripping rod 18,
A gripping pressure surface is located between the upper and lower platens of gripping rod 18 (see FIG. 1).

As will be appreciated, the true acceleration and deceleration of the crankshaft rotation, i.e., the high and low speeds of the travel of the movable platen, is such that the mortise or protrusion 16
Due to the tensile force applied to the

Many details of the features described herein can be changed without departing from the scope of the invention. For example, the tenon of the crankshaft 10 can be slippery, rollers, or the like.

The groove 15 of the wheel 12 can be provided in the crankshaft 10 supporting the wheel 12 integrally or as an insert. Also, the drive elements can be reversed.
That is, the crankshaft 10 can be configured by a groove, and the wheel 12 or its rotating shaft 14 can be configured by a drive projection, a tenon, a slide, a roller, or the like.

As another driving configuration in the drawing, a lever 3 and a wheel 12
And the connecting rod coupled to the crankshaft 10 can be obtained by replacing the connecting rod with the groove and the projection, and the constant operation can be periodically changed from the constant operation to the movable operation depending on the offset position of the center.

It is also conceivable to use conventional elastic devices to absorb the mechanical energy generated by the drive system of the press.

The materials, shapes, dimensions of auxiliary structures, devices for achieving the objects of the present invention, machines to which the present invention is applied, and other accessories can be freely selected without departing from the gist of the present invention. .

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a part of the platen press apparatus of the present invention removed, FIG. 2 is a front longitudinal sectional view of a control mechanism of a movable platen, and FIG. FIG. 1 ... platen, 2, 5, 7 ... semi-cylindrical connecting part, 3 ...
... Crank lever, 4 ... Upper arm, 6 ... Lower arm, 8 ...
... Supporting part, 9 ... Wedge, 10 ... Crankshaft, 11 ... Connecting rod, 12 ... Wheel, 13 ... Warm, 14 ...
... Rotating shaft, 18 ... Grip rod.

Claims (2)

(57) [Claims] 1. A fixed upper platen, a movable lower platen that moves toward and away from the fixed upper platen, and is moved between the platens to remove sheet material from between the platens. A supply element comprising a plurality of gripping rods, a crankshaft, a plurality of crank levers connected to the movable lower platen, a plurality of connecting rods respectively connected to the crankshaft and one of the crank levers, A driving device that periodically drives the crankshaft at a variable speed, wherein the driving device rotates around an axis that is close to one end of the crankshaft and that is parallel to the axis of the crankshaft. A wheel having a radial guide on a side facing the one end of the crankshaft; and a radial guide connected to the one end of the crankshaft, wherein the radial guide of the wheel is provided. And a tracking element slidably engaged, the interaction between the radial guiding and tracking element of the wheel, generates a tensile force variable, as its variation,
A plurality of connecting rods and a plurality of crank levers change the rotation speed of a crankshaft that drives the movable lower platen at a variable speed during a raising and lowering operation, wherein the movable lower platen comes closest to a fixed upper platen, and When the element is at the outermost position of the radial guide, the movable lower platen is furthest from the fixed upper platen and relatively faster than when the following element is at the innermost position of the radial guide. The crankshaft is articulated to move with the movable lower platen; during rotation of the crankshaft, at 270 ° the movable lower platen and fixed upper platen are separated, and at 90 ° of rotation the movable lower platen and The fixed upper platen contacts each other, and the operation of the movable lower platen To movement of the element is adjustable, a platen press and wherein the. 2. The method according to claim 1, wherein the radial guide is a groove in the side surface of the wheel facing the one end of the crankshaft, and the following element is a tenon or a protrusion protruding from the one end of the crankshaft. The platen press device according to claim 1.