US2001712A - Press mechanism - Google Patents

Description

May 21, 1935. R. w. DlNZL PRESS MECHANlSM Filed Jan. 8, 1951 \NVENTOR:

Patented May 21, 1935 PRESS MECHANISM Richard W. Dinzl, Philadelphia, Pa., assignor,

by mesne assignments, to Baldwin-Southwark. Corporation, a corporation of Delaware Application January 8, 1931, Serial No. 507,498

11 Claims. (Cl. 153-10) I My invention relates to press mechanism, and the object of my invention is to provide a fluidoperated press particularly adapted for the crushing or compacting of material-large diameter pipe sections, for instance,-for easier handling.

My invention includes a press which may have plates between which the material may be crushed or compacted; one of said plates being fixed to the cross-head and the other being hinged to the press platen so as to be capable of movement with respect to the platen when the latter is lowered after a compressing or compacting operation. In some instances it may be possible or desirable to omit the plate carried by the cross-head.

My invention includes a hook designed to be pushed out of the way when the press platen rises, so that such hook may engage-a lug or projection, preferably a roller, carried by the movable plate supported by the press platen, and sustain the same at one end while its opposite end, hinged to the platen, lowers. By this means, material crushed between the press platen and cross-head or the plates carried thereby may be automatically discharged from the hinged plate as it inclines while one end is temporarily supported by the hook as the press platen lowers.

A further object of my invention is to provide cushioning means for the hinged plate so that it may lower gradually upon the press platen, after it has been released from the hook.

These and other features of my invention are more fully described hereinafter, reference being had to the accompanying drawing, more ore less diagrammatic in character, in which:

Figure 1 is a front elevation, partly in section, of a press having and containing the features forming the subject of my invention;

Fig. 2 is a side elevation, with portions partly broken away to show clearly details comprising my invention;

Fig. 3 is an enlarged sectional view illustrating a detail of my invention; and

Fig. 4 is a sectional plan view on the line IV-IV, Fig. 3.-

In the crushing or compacting of various ma terials formany purposes, press mechanism of some type is usually employed. In the present instance I have shown a press which may be employed for compacting large pipe sections, having rams 8; the latter being connected to the platen 4 and operated in any usual manner.

The cross-head carries a plate I0, which may be fixed thereto, and the press platen 4 carries a plate II, which may be hinged thereto at H", and be- 5 tween these plates III and I I, the material may be crushed or compacted. In some instances the plate I0 may be omitted and the material may be compressed against the under face of the crosshead. The lift of the press platen during such 1 crushingoperation may be as high as the line XX, Fig. 2.

The plate, II carried by the press platen is provided with a lug or other projection, preferably a roller I2, at one end of the same, as clearly l6 indicated-in Figs. 1 and 2 of the drawing. The

cross-head 8 carries a hook I3, pivotally mounted at I4, and having an overbalancing portion II so that its normal position is that indicated in Fig. 2.

When the plate I I is raised by the press platen, the roller I2 carried thereby engages the lower cam face of the hook I3 and pushes the same out of the way, so that as the press platen continues to or near the limit of its upward movement, the 25 hook will underlie the roller I2 of the plate I I, and serve as a temporary support for such end of the plate for a short period while the press platen 4 is descending. When the press platen lowers, after a crushing or compacting operation, the 30 plate II will lag back and move on its hinge con- .Unless cushioned, this action would be more or less objectionable, on account of noise and possible displacement of the ,plate, and I provide means permitting the plate I I to move back to the press platen in an easy and gradual manner.

To this end, the hollow ram 3 may carry a cyl- Inder I5 containing oil and in which a piston I6 is arranged; the latter being carried by a rod I1, connected by links I8 to the plate II, which may have a lug II for such connection. When the hook I3 is. in engagement with the roller I2 of the plate II as the press platen descends, the piston I6 will be raised in its cylinder, and as soon as the hook releases the plate II, the piston is free to fall in its cylinder; displacing the oil therein which bleeds through the piston; thereby providing sufiicient and proper resistance to insure movement of said plate H without clatter or disarrangement.

To this end the piston "5 may be constructed and arranged as shown in Fig. 3. In such view the rod I! as shown as having a reduced end I'l carrying the piston l6, which is perforated, as indicated at l 6, and provided with a groove communicating with such perforations. The piston is held in place by a nut l9 spaced therefrom by a. collar 20, and a plate 2| underlying the piston is loosely mounted on this collar. The plate 2| may also be perforated, as indicated at 2|; the perforations of the same being smaller than the perforations Hi of the piston. When the piston is lifted, the plate 2! is held back by the oil freely passing through the perforations of the piston and out between the bottom of the same and the plate 2 I. When the piston is lowered the smaller bleeding holes in said plate 2| slow down the movement of the piston so that the lowering is gradual; thereby assuring easy return of the hinged plate l I to its normal position on the press platen.

While I have shown the cylinder I6 as located within the hollow ram and supported by the same it is obvious that such cylinder might be mounted externally thereof and conveniently supported by the press platen; the plate H, in such instance, having an extension at the rear of the press as indicated by dotted lines in Fig. 2, or otherwise disposed so as to provide proper connection with the piston rod disposed in such cylinder, and such arrangement is within the scope of my invention.

I claim:

1. The combination with press mechanism including a movable press platen and means for imparting vertical movement thereto, of a flat plate overlying said movable press platen and hinged thereto at one side of the same, and selfreleasing means attached to an upper stationary portion of said press mechanism for tilting said plate with respect to its hinged connection with the movable press platen as the latter starts to lower from the limit of its upward movement.

2. The combination with press mechanism, in-

cluding a cross-head, a vertically reciprocable press platen, and means for imparting upward movement to said press platen, a flat plate overlying said press platen and hinged thereto at one side of the same, and self-releasing means carried by said cross-head for tilting said plate with respect to its hinged connection with said press platen as the latter starts to lower from the limit of its upward movement.

3. The combination with press mechanism including a movable press platen and means for imparting upward movement thereto, of a flat plate overlying said press platen and hinged thereto at one side of the same, and a self-releasing hook pivotally hung from the upper part of the press mechanism and adapted to engage said plate at one side and tilt the same with respect to its hinged connection with the press platen as the latter starts to lower from the limit of its upward movement.

4. The combination with press mechanism, including a cross-head, a vertically reciprocable press platen and means for imparting upward movement thereto, of a plate hinged to said press platen, and a hook carried by said cross-head and adapted to engage said plate at one end and cause it to tilt with respect to its hinged connection as the platen starts to lower from the limit of its upward movement.

5. The combination with press mechanism including a movable press platen and means for imparting vertical movement thereto, of a flat plate overlying said press platen and hinged thereto at one side of the same, self-releasing means for tilting said plate with respect to its hinged connection with the platen as the latter starts to lower from the limit of its upward movement, and means for cushioning the movement of said plate into contact with the plate when said tilting means releases the plate.

6. The combination with press mechanism including a movable press platen and means for imparting vertical movement thereto, of a flat plate overlying said press platen and hinged thereto at one side of the same, self-releasing means for tilting said plate with respect to its hinged connection with the platen as the latter starts to lower from the limit of its upward movement, and means for cushioning the movement of said plate into contact with the platen when said tilting means is released; said cushioning means including a cylinder operatively connected to the press platen, and a piston in said cylinder operatively connected to said hinged plate.

7. The combination with press mechanism, including a base, a cylinder, a movable platen, a cross-head, and connecting parts, oi a plate hinged to the platen between which and the crosshead material may be compacted, and a pivotally mounted hook carried by the cross=head and adapted to engage said hinged plate when the latter reaches the limit of itsupward movement; said hook temporarily sustaining said plate whereby it may tilt and automatically discharge the compacted body.

8. The combination with press mechanism, including a base, a cylinder, a movable platen, a cross-head, and connecting parts, of a plate hinged to the platen between which and the crosshead material may be compacted, a pivotally mounted hook carried by the cross-head and adapted to engage said hinged plate when the latter reaches the limit of its upward movement; said hook temporarily sustaining said plate whereby it may tilt and automatically discharge the compressed body, and means operatively connected to the press platen for cushioning the return movement of said plate.

9. The combination with press mechanism, including a base, a cylinder, a movable platen, a cross-head, and connecting parts, of a plate hinged to the platen between which and the crosshead material may be compacted, a pivotally mounted hook carried by the cross-head and adapted to engage said hinged plate when the latter reaches the limit of its upward movement; said hook temporarily sustaining said plate whereby it may tilt and automatically discharge the compressed body, and means carried by the press platen for cushioning the return movement of said plate.

10. The combination with press mechanism, including a base, a cylinder, a movable platen, a cross-head, and connecting parts, of a plate hinged to the platen between which and the crosshead material may be crushed, a pivotally mounted ho:l. carried by the cross-head and adapted to engage said hinged plate when the latter reaches the limit of its upward movement; said hook temporarily sustaining said plate whereby it may tilt and automatically discharge the compressed body, a supplemental cylinder operatively connected to the press platen, and a piston mounted in said supplemental cylinder and oper= a,oo1,712

atively connected to said hinged plate for cushioning the return movement of the same.

11. The combination with press mechanism, including a base, a cylinder, a ram therein, a movable platen connected to said ram, a cross-head, and connecting parts, of a plate hinged to the platen between which and the cross-head material may be crushed, a pivotally mounted hook carried by the cross-head and adapted to engage said hinged plate when the latter reaches the limit of its upward movement; said hook temporarily sustaining said plate whereby it may tilt and automatically discharge the compressed body, a supplemental cylinder carried by the ram, and a. piston mounted in said supplemental cylinder and operatively connected to said hinged plate for cushioning the return movement of the same.

I RICHARD W. DINZL.

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