US2131971A - Box making machine - Google Patents

Description

4, 19 A. ROSENMU ND 2,131,971

BOX MAKING MACHINE Filed March 27, 1937 5 Sheets-Sheet l INVENTOR. HEM-RED L. Rosmwuwo.

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Oct. 4, 1938. ROSENMUNID 2,131,971

BOX MAKING MACHINE Fil ed March 27, 1957 5 Sheets-Sheet 3 INVENTOR. ALFRED L. Ross/mama.

A TTOR Fig. '8.

Patented Oct. 4, 1938 UNITED STATES PATENT OFFICE BOX MAKING MACHINE;

aware Application March 27, 1937, Serial No. 133,294

8 Claims.

This invention relates to box making machinery and particularly to machines for equipping wired box parts with fastening means.

It is an object of the invention to provide a machine of the type shown in U. S. Patents Nos. 1,933,031 and 2,024,188, with mechanisms which will permit it to operate on difierent types of box blanks and particularly upon fibreboard box blanks having an overlapping flap at the closing corner edge of the completed box.

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

Figure 1 is a perspective View of one type of box blank upon. which the mechanism of this invention is adapted to operate. 1

Fig. 2 is a perspective view of a completed box made from the box blank shown in Fig. 1 and showing the overlapping flap at the closing cornet of the box.

Fig. 3 is a side elevation of a fastener supplying machine equipped with the mechanism of this invention. Certain parts are omitted for clearness of illustration.

Fig. 4 is a plan view of the machine shown in Fig. 3 with certain parts omitted for clearness of illustration.

Fig. 5 is an enlarged side elevation of a portion of the machine of Fig. 3 and showing a box 0 blank being fed into the machine in the direction of the arrow.

Fig. 6 is a similar view on a still larger scale showing the position of the parts just prior to a fastener supplying operation.

Figs. 7 and 8 are similar views showing the position of the parts during subsequent stages of a fastener supplying operation.

In Fig. 1 is shown one type of box blank which has been equipped with fastening means by the machine of this invention. As there shown, the blank consists of a single sheet of bendable side material A creased at potential box corners and cleats B connected together by binding Wires C stapled to the box parts. The ends of the binding wires have been bent and driven into the side material A to form bights D. The side material A of the right hand end of the blank which constitutes the top of the box when the blank is folded into box form is provided with an extension or flap E which, as shown in Fig. 2, is bent down over the front side of the box when the blank is folded into box form.

The cleats B are usually made of resawed lumber while the side material A is made preferably of bendable material such, for example, as

fibreboard. While a single sheet of side material is shown in the illustrative box blank, it will be understood that a plurality of sheets may be used.

The wires C are stapled to the box parts in a box blank machine such, for example, as the 5 machine shown in U. S. Patent No. 1,669,383 of May 8, 1928. When the box blanks emerge from the box blank machine they are connected together by the wires $3, appropriate spaces being left between succeeding 'box blanks to permit .10 severing the wires between blanks and forming the fasteners D thereon.

The machine of this application receives the wire-connected box blanks, severs the wires between the blanks, forms prongs on the wire ends, 15

bends the wires to form the bights D, and drives the prongs into the box parts to perpetuate the bights D.

Referring to Figs. 1 and 2, the box blanks to be operated upon are fed into: the machine onto 20 a table T which is reciprocated vertically to present the wires to the fastener supplying mechanism in the manner fully described in my Patent No. 1,933,031.

The box blanks are positioned on the table T on stock supports I and are held against vertical movement by presser bars 2. When the wireconnected box blanks have been correctly positioned for a fastener supplying operation the machine is started and one cycle of operation 0 severs all of the wires and forms bightsthereon, all as fully described in said Patents Nos. 1,933,031 and 2,024,188.

In Fig.3 is showngenerally the cutter-oper ating mechanism '3 which operates first to sever the wires between blanks. Spindles 4 thereupon bend the wires to form the bights and'driving mechanism 5 operated by vertically reciprocating cross bars 6 thereupon drive the wire ends into the box parts to perpetuate the bights. 40

The wire-cutting, bight-forming and driving mechanisms are fully described in said Patents Nos. 1,933,031 and 2,024,188, and need not be described in detail herein.

When box blanks having an extending flap E such as that shown in Fig. 1 are operated upon in the machine the flap E in its extended position would interfere with the formation of bights D at that end of the blank. The present invention provides mechanism for bending the flap E down- 50 wardly prior to and during a fastener supplying operation to permit the bight-forming mechani'sm to engage and operate on the wire which extends over the flap.

As best shown in Fig. 5, the box blank is fed 55 into the machine with the flap E at the rear end of the blank. When the blank reaches the correct position to be operated upon by the fastener supplying mechanism fingers 1 carried respectively by rods 8 rise and engage .the rear end of the flap E. Each rod 8 is pivoted to an arm 9 fixed to a rock shaft ID journaled in brackets ll secured to the table T. Each finger l is raised by a spring I2 which connects the other end of the rod 8 with a cross rod i3 fixed in brackets ll.

Each finger 1 has a slanting front face, as

shown, so that the incomingbox blank may lower the finger 1 against the action of the spring l2 while the box blank materials are being fed into the machine, and when the rear end of the box blank passes over the fingers 1 they are raised by the springs l2 into engagement with the rear end of the fiap E.

As best shown in Fig. 4 the fingers 1 carried by the rods 8 are each formed to straddle presser bar 2, which presser bar 2 holds the fingers down against the. action of the spring .12 when no box blank material is present above the fingers I.

With the positioning fingers in the position shown in Fig. 6 the machine is thrown into operation for one cycle to out the wires to form the bights thereon; When the machine is-started the fingers 1 are automatically moved to the left from the position shown in Fig. 6 'to the position shown in Fig. 7 and during this movement bend the flap E downwardly, as shown in Figs. 6 and 7.

Fingers I are moved from the position shown in Fig. 6 to the position shown in Fig. '7 by rocking.

shaft In in a' counterclockwise direction. Shaft I0 is rocked in a counterclockwise ,direction through the action of a cam [5 on a bell crank I 6 through a rod l'l pivoted to crank l8 fast on shaft l0. Rod 11- maybe in two sections connectedby a turnbuckle I9 which may be used to vary the effective length of rod 8 which carries the fingers 1. Bell crank I6 is held in contact with cam l5 through the action of a spring 20 attached atits lower end tothe framework 2| of the machine cutting mechanism 3 descends severing the wires between the blanks. 'During this downward movement of the cutter actuator the cross bars 6 which operate the drivers start to ascend. This ascending movement of the cross bars 6 raises cam l 5 which moves bell crank l6 from the position shown in Fig. 6 to'the position shown-in Fig. '7, thereby rocking shaft [0 and causing fingers 1 to bend'the fiap E from the position shown in Fig. 6 to the position shown in Fig. 7. The table T during this movement has been falling and spindles 4 engage the wires and form the bights D thereon. During this operation of the spindles 4, the flap E is bent downwardas shown in Fig. 7 so asnot to interfere in any way with the operation of the spindles. The drivers thereupon descend'and drive the ends of the wires into the box parts to perpetuate the bights. This descent.

of the drivers lowers the cam l5 andpermits bell crank l6.to return to its initial position through the action of spring 20, and this movement in turn.

instrumentalities operable upon a fiexible binder secured to a box part having a flap portion to form a. bight in the binder and drive the end of the binder into the box part to perpetuate the secured to a box part having a fiap portion to,

form a bight in the binder and drive the end of the binder into the box part to perpetuate the bight, and means to bend the flap portion during a bight-forming operation.

3. In a machine of the character described,"

instrumentalities operable upon a flexible binder secured to a box part having a flap portion to form a bight'in the binder and drive the end of the binder into the box part to perpetuate the bight. and means to bend'the fiap portion and hold it in bent position during a bight-forming operation.

. 4. Ina machine of the character described, instrumentalitiesoperable upon a flexible binder secured to a box part having a flap portion to form a bight in the binder and drive the end of the binder into the box'part to perpetuate the bight, and means for bending the flap portion of the box part.

5. In a machine of the character described, instrumentalities operable upon a flexible binder secured to a box part having a flap portion toform a bight in the binder and drive the end of the,

binder into the box part to perpetuate the bight, and means for bending the flap portion of the box part, said'bending means comprising a member to engage and lower an edge of the flap portion.-

6. In a machine of the character described, instrumentalities operable upon a flexible binder secured to a box part having a flap portion to form a bight in the binder anddrive the end of the binder into the box part to perpetuate the bight,

' and means for bending the fiap portion of. the box part, said bending means comprising a member yieldingly held below the box part and'adapted to rise and engage an edge of the flap portion when the boxpart is in position to be operated upon by said instrumentalities. Q

' 7. In a. machine of the character described, instrumentalities operable upon a flexible binder secured to abox part having a flap portion to form a bight in the binder and drive the end 'of the binder into the box part to perpetuate the bight, and means controlled in accordance with r the operation of the bight-forming instrumentality to bend the flap portion of the box part.

8. In a machine of the character described, a support for a wired box part having a flap portion, bight-forming means, means to present the wired box part to the bight-forming means, and means to bend the flap portion of the box part to permit. thebight-forming means to engage the wire secured to the box part. r

- ALFRED L. ROSENMUND.

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