US2091377A

US2091377A - Box-making machine

Info

Publication number: US2091377A
Application number: US62272A
Authority: US
Inventors: Alfred L Rosenmund
Original assignee: Stapling Machines Co LLC
Current assignee: Stapling Machines Co LLC
Priority date: 1936-02-04
Filing date: 1936-02-04
Publication date: 1937-08-31
Anticipated expiration: 1954-08-31

Description

1937- A. L. ROSENMUND 2,091,377

BOX MAKING MACHINE Filed Feb. 4, 1956 5 Sheets-Sheet 1 INVENTOR. ALFREDLROS'LNMUND 70 /%ORNW 1937. A. L. ROSENMUND- 2,091,377

BOX MAKING MACHINE Filed Feb. 4, 1936 5 Sheets-She et 2 ALFgEDA. RQSENMUND A T T ORNEYS.

Aug. 31, 1937. A. L. ROSENMUND BOX MAKING MACHINE 5 Sheets-Sheet 3 Filed Feb. 4, i936 D T. m m x mwlm m m xm 0 3R 5 2 2 a 0% E a? @5 oo 6 A 5 m Aug. 31, 1937.

A. L. ROSENMUND BOX MAKING MACHINE 5 Sheets-Sheet 4 Filed Feb. 4, 1936 INVENTOR. ALFRED LROSLNMUND Aug. 31, 1937. A. L. ROSENMUND BOX MAKING MACHINE Filed Feb. 4, 1936 5 Sheets-Sheet 5 INVENTOR. ALFRED L.ROSENMUND A TTORNEYS.

Patented Aug. 31, 1937 UNETE S'llti;

FFEQE BOX-MAKEN G MACHINE Delaware Application February 4, 1936, Serial No. 62,272

16 Claims.

This invention relates to machines for equipping wired box parts with interengageable fasteners and particularly to machines for manipulating a wire secured to a box part to provide the wire end with a bight and to perpetuate the bight by driving the end of the wire into the box part.

It is an object of the invention to provide certain improvements in machines of the type shown and described in U. S. Patents No. 1,933,031 of October 31, 1933, and No. 2,024,188 of December 17, 1935. I

It is a further object to provide a machine of the character described with improved means for clinching the ends of wires which are driven through the box parts.

One illustrative embodiment of the invention is shown in the accompanying drawings, in which:-

0 Figure 1 is a side elevation of a machine embodying the invention.

Fig. 2 is a rear elevation of the same.

Fig. 3 is a diagrammatic view of the wiremanipulating elements of the machine shown in 25 stopped position with a pair of wire-connected box parts positioned on the supporting table. The dotted lines indicate the table in raised position and the full lines indicate the table in lowered position,

30 Fig. 4 is a similar view at a different stage in the cycle of operation and showing the position of the different wire-manipulating elements at the time of a prong-forming operation which occurs just after the wire-cutting operation.

35 Fig. 5 is a similar view showing the position of the wire-manipulating elements after the wire connecting the two box parts has been severed and prongs formed on the ends of the severed wires and after the prongs have been swung over 40 onto their respective box parts to form bights.

Fig. 6 is a similar view showing the position of the box parts after the prongs have been driven through the box parts and clinched to perpetuate the bights.

5 Fig. '7 is an enlarged perspective view of one of the clinching units. In this view the prong on the end of the wire is being driven through the box part and has not yet contacted the clincher block.

50 Fig. 8 is a similar View but showing the position of the parts upon completion of a clinching operation.

Fig. 9 is a perspective view of a wirebound box blank equipped with interengageable fasteners 55 by the machine of this application,

(Cl. Mil-93) Fig. 10 is a perspective View of a completed box equipped with interengageable fasteners by the machine of this application and showing one of the fasteners in an intermediate stage of interengagement and the other fasteners completely 5 interengaged.

One illustrative product of the machine of this application is shown in Figs. 9 and 10. Fig. 9 discloses a wirebound box blank consisting of a plurality of sections of cleats A and side sheets B 10 connected together by binding wires C stapled to the several sections. Such wirebound box blanks are made on a box blank machine which staples the wires to the several sections. As successive box blanks emerge from the box blank 5 machine they are connected by the binding wires C, appropriate spaces being left between successive box blanks to permit severing the Wires and manipulating the severed ends to provide bights D (see Fig. 9) which bights may be interengaged to close the box, as shown in Fig. 10.

As the wire-connected box blanks emerge from the box blank machine they are fed into the machine of this application and positioned on a vertically movable support or table T, as shown diagrammatically in Fig. 3. As there shown, in dotted lines, the wire to be operated upon is located directly above cutters i, prong-forming blocks 2, and bight-forming spindles 3, and below cutter-actuator 5 carrying prong-forming elements 5, and also below drivers 6.

In Fig. 3, the parts are at rest preparatory to the start of the machine. The machine is operated through a one-cycle clutch as explained in said Patents No. 1,933,031 and No. 2,024,188, and during one cycle of operation the several wire-manipulating elements go through the successive operations shown diagrammatically in Figs. 3 to 6.

As shown in Fig. 3 in the full lines, the table support first lowers the wire C between cutters I and into contact with prong-forming blocks 2. As shown in Fig. 4:, the cutter-actuator carrying prong-forming elements 5 descends, operating the I cutters l to sever the wire C and bend the severed ends over prong-forming blocks 2 to form prongs P on the ends of the wire. After descent of the cutter-actuator, the spindles 3 are raised so that the wire will be lifted clear of the prong-forming blocks. The spindles are then partially rotated to swing the prongs over onto the box parts, as shown in Fig. 5. Drivers 6 thereupon descend and drive the prongs through the box parts to perpetuate the bights, as shown in Fig. 6.

I The several wire-manipulating elements and the mechanisms for operating the same are disclosed and described in detail in said Patents No. 1,933,031 and No. 2,024,188, reference to which is hereby made for a detailed description. The present invention is. directed to an improvement in the mechanism for clinching the prongs P which are driven through the box parts. In the machines of the prior patents referred to, the box part during a driving operation rests upon a plate yieldingly held by means of springs a sufficient distance above the clincher block to permit the prong to be driven through the box part before contacting with the clincher block, an opening being provided in the plate above the clincher block. The springs are of such stiffness as to resist the thrust of the driver while the prong is being driven through the box part and then to yield to the thrust of the driver to permit it to force the prong down against the clincher 2O block to cause a clinching operation.

. While such an arrangement operated satisfactorily under certain conditions, it has been found diflicult to regulate the stiffness of the springs to accommodate different types of wood employed in the manufacture of boxes. Springs having suflicient stifiness to resist the thrust of the driver when driving a prong through soft wood sometimes fail to resist the thrust of the driver when driving prongs through harder woods, with the result that the prongs are crushed or flattened on top of the box part instead of being driven therethrough.

The present invention is intended to eliminate the difiiculties referred to above and to provide positive means for resisting the thrust of the driver until the prong has been driven through the box part, and to provide means for automatically withdrawing the positive resistor after the prong has been driven through the box part to permit the driver to drive the prong downwardly against the clincher block, thus providing clincher mechanism adapted without adjustment to operate satisfactorily on woods varying widely in hardness.

Referring particularly to Figs. '7 and 8, the box part designated X rests during a driving operation on a plate or plates I0, there being one plate I0 for each wire secured to the box part X. Plate I0 is supported above blocks II and in spaced relation thereto by means of springs I2 and bolts I3 slidable in recesses formed in block II. Block II is secured to one of the machine castings, as described in the afore-mentioned patents.

Plate I0 is provided with an opening I4 passing therethrough and into which the prong P may be driven by the driver. Directly beneath the opening I4 and secured to the upper surface of the block II is a clincher block I5. As shown in Fig. 7, the clinching surface ofv the block I5 is located a sufficient distance below the top surface of the plate I 0 to permit the prong to be fully driven before it contacts with the block I5.

To positively hold the plate ID in raised position during the driving of the prong, plate I0 is provided with a downwardly extending lug I6 which normally rests upon a cam fixed to a shaft I3 journaled in bearings in a block I9 secured to block I I.

As shown in Fig, '7, cam I! is normally held in contact with lug I6 positively to keep plate II) in raised position through the action of a spring 20, one'end of which is secured to a bracket 2I carried by block II, and the other end of which is secured to a pin 22 fixed to shaft I8. Cam I! carries a pin 23 to limit the action of spring 20 and to position the cam I'I relative to the lug I6.

Thus it will be seen that when the cam I1 is in the position shown in Fig. '7, plate I0 will be held positively in raised position during the driving of the prong P through the box part X. Drivers 6 which drive the prongs through the box part are carried by a vertically reciprocating cross bar 24, as shown in Fig. 2. To move cam I! out of contact with lug I5 at the proper time to permit the driver to force the prong P down against clincher block I5, there is secured to cross bar 24 a casting 25 carrying a downwardly extending release bar 26 which is so adjusted as to contact a lever 21 fixed to shaft It just as the driver contacts the prong and then starts to drive the prong through the box blank. Continued downward movement of the cross bar 24 causes lever 2'! through the action of release bar 26 to rock shaft I8 and thereby move cam I! out from under lug I6 as the driver contacts the box part. Continued movement of the driver will then force the box part X, prong P and plate I0 downwardly toward the block II and the clincher block I5, and the prong P will be clinched as shown in Fig. 8.

Shaft I 8 extends through all the clincher units and it is necessary to have but one release bar 26 to actuate it, as shown in Fig. 2. 7

When the driving and clinching operations are completed and the cross bar '24 raised to initial position, springs I2 will raise plate I0 to initial position and spring 20 will move cam I'I into position beneath the lug I6 to resist positively the next thrust of the driver.

Among other advantages the clinching mechanism of this application insures a satisfactory and uniform clinching operation regardless of wide variations in the type of character of wood used in the manufacture of boxes. 7

While one clincher unit only has been shown and described in detail, it will be understood that a clincher unit is provided for each wire to be operated upon, the several clinching units being adjustable to accommodate different wire spacings, all as described in the patents hereinbefore referred to.

While the clinching mechanism of this application has been described as adapted for use in the particular type of machine shown in the aforesaid Patents No. 1,933,031and No. 2,024,188, it will be understood that it may be used to advantage in other machines designed to clinch the ends of wires driven through box parts.

It will also be understood that the invention is not to be limited to the specific embodiment shown for purposes of illustration as it may be variously embodied without departing from the invention.

It will also be understood that all of the features of the invention need not be used conjointly as they may be used to advantage in various combinations as defined in the sub-joined claims.

I claim:

1. In a machine of the character described, instrumentalities operable upon a wire secured to a box part to bend the wire to form a bight, means to drive the end of the wire through the box part to perpetuate the bight, and means to clinch the end of the wire which is driven through the box part; said clinch means comprising a clinch block, means yieldingly to support the box part above the clinch block, means positively to support the box part above the clinch block, and

means to release the positive support after the wire has been driven through the box part to permit the driver to force the wire end against the clinch block.

2. In a machine of the character described, instrumentalities operable upon a wire secured to a box part to bend the wire to form a bight, means to drive the end of the Wire through the box part to perpetuate the bight, and means to clinch the end of the wire which is driven through the box part; said clinch means comprising a clinch block, means yieldingly to support the box part in spaced relationship to the clinch block, means positively to support the box part in spaced relationship to the clinch block, and means torelease the positive support after the wire end has been driven through the box part to permit the driver to force the wire end against the clinch block.

3. In a machine of the character described, instrumentalities operable upon a. wire secured to a box part to bend the wire to form a bight, means to drive the end of the wire through the box part to perpetuate the bight, and means to clinch the end of the wire which is driven through the box part; said clinch means comprising a clinch block, yielding means normally supporting the box part above the clinch block, means positively tosupport the box part above the clinch block, and means to release the positive support after the wire end has been driven through the box part to permit the driver to force the wire end against the clinch block.

4. In a machine of the character described, instrumentalities operable upon a wire secured to a box part to bend the wire to form a bight, means to drive the end of the wire through the box part to perpetuate the bight, and means to clinch the end of the wire which is driven through the box part; said clinch means comprising a clinch block, yielding means normally holding the box part in spaced relationship to the clinch block,

means positively to hold the box part in spaced relationship with the clinch block, and means to withdraw the positive support during a driving operation.

5. In a machine of the character described, instrumentalities operable upon a wire secured to a box part to bend the wire to form a bight, means to drive the end of the wire through the box part to perpetuate the bight, and means to clinch the end of the wire which is driven through the box part; said clinch means comprising a clinch block, yielding means normally holding the box part in spaced relationship to the clinch block, means positively to hold the box part in spaced relationship with the clinch block and means to withdraw the positive support during a selected phase of the driving operation.

6. In a machine of the character described, instrumentalities operable upon a wire secured to a box part to bend the wire to form a bight, means to drive the end of the wire through the box part to perpetuate the bight, and means to clinch the end of the wire which is driven through the box part; said clinch means comprising a clinch block, yielding means normally holding the box part in spaced relationship to the clinch block, means positively to hold the box part in spaced relationship with the clinch block, and means operated in accordance with the position of the driver to withdraw the positive support.

7. In a machine of the character described, instrumentalities operable upon a wire secured to a box part to bend the wire to form a bight, means to drive the end of the wire through the box part to perpetuate the bight, and means to clinch the end of the wire which is driven through the box part; said clinch means comprising a clinch block, a spring support for the box part means positively to support the box part above the clinch block, and means to release the positive support during a driving operation.

8. In a machine of the character described, instrumentalities operable upon a wire secured to a box part to bend the wire to form a bight, means to drive the end of the Wire through the box part to perpetuate the bight, and means to clinch the end of the wire which is driven through the box part; said clinch means comprising a clinch block, a spring support for the box part, means positively to support the box part above the clinch block, and means operated in accordance with the position of the driver to withdraw the positive support.

9. In a-machine of the character described, instrumentalities operable upon a Wire secured to a box part to bend the wire to form a bight, means to drive the end of. the Wire through the box part to perpetuate the bight, and means to clinch the end of the Wire which is driven through the box part; said clinch means comprising a clinch block, a spring support for the box part, means positively to support the box part in spaced relationship to the clinch block, and means to release the positive support at selected times.

10. In a machine of the character described, instrumentalities operable upon a wire secured to a box part to bend the wire to form a bight, means to drive the end of the wire through the box part to perpetuate the bight, and means to clinch the end of the wire which is driven through the box part; said clinch means comprising a clinch block, a spring support for the box part, means positively to support the box part in spaced relationship to the clinch block, means normally holding said support in operative position, and means to move it to inoperative position.

11. In a machine of the character described,

instrumentalities operable upon a flexible binder secured to a box part to bend the binder to form a bight, means to drive the end of the binder through the box part to perpetuate the bight, and means to clinch the end of the binder which is driven through the box part; said clinch means comprising a clinch block, means yieldingly to support the box part above the clinch block, means positively to support the box part above the clinch block, and means to release the positive support at selected times.

12. In a machine of the character described, instrumentalities operable upon a flexible binder secured to a box part to bend the binder to form a bight, means to drive the end of the binder through the box part to perpetuate the bight, and means to clinch the end of the binder which is driven through the box part; said clinch means comprising a clinch block, a spring support for the box part, means positively to support the box part in spaced relation to the clinch block, and means to release the positive support at selected times.

13. In a machine of the character described, instrumentalities operable upon a plurality of. wires secured to a box part to bend each wire to form a bight, means to drive the end of each wire through the box part, and means to clinch the ends of the wires which are driven through the box part; said clinch means comprising a plurality of clinch blocks, means yieldingly to support the box part above the clinch blocks, means positively to support the box part above the clinch blocks, and means to release the positive support at selected times.

14. In a machine of the character described, instrumentalities operable upon a plurality'of wires secured to a box part to bend each wire to form a bight, means to drive the end of each wire through the box part, and means to clinch the ends of the wires which are driven through the box part; said clinch means comprising a plurality of clinch blocks, a spring support for the box part, means positively to support the box part in spaced relation to the clinch blocks, and means to release the positive support at selected times.

15. In a machine of the character described, instrumentalities operable upon a wire secured to a box part to bend the wire to form a bight, means to drive the end of the wire through the box part to perpetuate the bight, and means to clinch the end of the wire which is driven through the box part; said means comprising a stationary fclinch block, yielding means normally holding the box part in spaced relationship to the clinch block, means positively to hold the box part in spaced relationship with the clinch block, and means to withdraw the positive support during a driving operation.

16. In a machine of the character described, instrumentalities operable upon a wire secured to a box part to bend the wire to form a bight, means to drive the end of the wire through the box part to perpetuate the bight, and means to clinch the end of the wire which is driven through the box part; said clinch means comprising a stationary clinch block, means positively to support the box part above the clinch block, and means to release the positive support during a driving operation.

ALFRED L. ROSENMUND.