US3038163A - Fastening inserting machines - Google Patents

Description

June 12, 1962 A. E. NEWTON 3,038,163

FASTENING INSERTING MACHINES Filed Jan. 10, 1961 6 Sheets-Sheet 1 1 1] Invenzar Aiberz E'Newzfon By his Aftorney June 12, 1962 Filed Jan. 10, 1961 A. E. NEWTON FASTENING INSERTING MACHINES 6 Sheets-Sheet 2 June 12, 1962 A E. NEWTON FASTENING INSERTING MACHINES 6 Sheets-Sheet 5 Filed Jan. 10, 1961 June 12, 1962- A. E. NEWTON 3,038,163

FASTENING INSERTING MACHINES Filed Jan. 10, 1961 6 Sheets-Sheet 4 June 12, 1962 A. E. NEWTON FASTENING INSERTING MACHINES 6 Sheets-Sheet 5 Filed Jan. 10, 1961 June 12, 1962 E. NEWTON FASTENING INSERTING MACHINES Filed Jan. 10, 1961 6 Sheets-Sheet 6 .bmm

m EQQQDNM Q m k m m Rw E mm [T ma HS tmm ilaw Q w w m Em N m b E m k State fit Shoe Machinery Corporation Boston Mass. a co ration of New Jersey rp Filed Jan. 10, 196i, Ser. No. 81,740 8 Claims. (Cl. 1309) This invention relates generally to fastener inserting machines, and has particular reference to a machine which s adapted to insert a series of fasteners into a Work piece In a predetermined pattern.

The invention is illustrated herein as being applied to a machine arranged to insert fasteners into shoes, particularly fiber fasteners such as are often used in attaching an outsole to the heel seat of a shoe. The illustrated embodiment of the present invention is shown as applied to a fastener inserting machine of the general type shown in United States Letters Patent No. 1,030,775, granted June 25, 1912, to G. Goddu, with modifications shown in United States Letters Patent No. 1,849,253, granted March 15, 1932, to F. N. La Chapelle, to adapt the machine for driving fiber pegs.

Machines of this type are provided with an awl and a peg driver, said awl being arranged to punch a hole in the work being operated on, and to feed the work laterally so that the punched hole is shifted to a peg driving statron m alignment with a peg driver. During the peg driving operation, the work piece is held by the operator and rotated in cooperation with the machine feeding mechanlsm so that the pegs are inserted along a predetermined path about the heel end of the shoe.

In the machine disclosed in the above-mentioned patents, means is provided to clamp the shoe during the punching and driving operations, with means for releasing the clamping means between strokes of the machine, to enable the work to be fed laterally by sideways motion of the awl at the end of a hole punching stroke.

It has been found that considerable time is required to train personnel in the proper operation of the machine, since if the shoe is turned too rapidly or with excessive force, the awl may be bent, or the shoe may be moved in relation to the mechanism, resulting in misregistration of the hole with the peg driver. In such cases the peg is bent over rather than forced into the hole, resulting in decreased strength of attachment of the outsole to the heel seat.

Accordingly an object of this invention is to provide a machine of the type described in which means is provided for preventing lateral movement of the shoe in relation to the peg driving mechanism after the awl is retracted from the hole.

A further object of the invention is to provide, in a machine of the type described, means other than the awl for feeding the work laterally, said means also serving positively to position the hole in relation to the fastener driving mechanism.

Still another object of the invention is to provide a machine of the type described in which means is provided for preventing the operator from moving the shoe in a manner to cause misregistration of the peg with the hole.

Other objects of the invention will be apparent to one skilled in the art from the following description of a specific embodiment thereof.

In the drawings,

FIG. 1 is a view in front elevation of the operating head of a fastener inserting machine embodying the features of the invention;

FIG. 2 is a view of the machine of FIG. 1 as seen from the left side;

FIG. 3 is a view of the awl driving mechanism as seen from the right side of FIG. 1, with other portions of the mechanism omitted for clarity;

FIG. 4 is an enlarged view of the peg carrier mechanism as seen from the left side of FIG. 1, with other portions of the mechanism omitted for clarity;

FIG. 5 is an enlarged view in front elevation, partly in section, of the fastener inserting mechanism during a first part of the operating cycle in which the awl is punching a hole in the work piece; 7

FIG. 6 is a view of the fastener-inserting mechanism illustrating a portion of the operating cycle subsequent to that shown in FIG. 5, in which the work has been fed laterally into position to permit the peg to be driven into the hole punched by the driver;

FIG. 7 is a view of the fastener-inserting mechanism during a portion of the operating cycle subsequent to that of FIG. 6, in which the peg has been driven into the hole;

FIG. '8 is a view of the fastener-inserting mechanism during a portion of the operating cycle subsequent to that of FIG. 7, in which mechanisms are retracting to their original positions;

FIG. 9 is a view in section taken on line IX- IX of FIG. 5;

FIG. 10 is a view in section taken on line XX of FIG. 6; and

FIG. 11 is a cam timing chart of the various machine mechanisms illustrating the movements thereof, during a machine cycle.

In the particular embodiment illustrated, the machine is provided with a column 10 which supports at its upper end a head 12 provided with the fastener inserting mechanisin and its associated operating mechanism, and a work support 14 disposed below the head to receive a last carrying a partially fabricated shoe so as to position the heel end of the shoe under the fastener inserting mechanism.

The work support 14 does not form part of the present invention and may comprise any convenient means, mechanical, or hydraulic for forcing the shoe upwardly against the fastener inserting mechanism, as will be described hereinafter, at the beginning of a fastener inserting operation, and lowering it at the completion thereof.

The operating mechanism includes a main drive shaft 16 adapted to be rotatably driven by any convenient means (not shown) through clutch means actuated by an operating treadle in the usual manner as described in the abovementioned patents. The shaft 16 carries a plurality of cam tracks to actuate the fastener inserting instrumentalities, as will appear hereinafter.

The fastener inserting mechanism includes an awl 18 adapted for vertical movement to punch a hole in the work piece, a work feeding and positioning tool 20 adapted for lateral and vertical movement to feed the work from the hole punching station to the peg driving station, a peg carrier 22 adapted for forward and backward movement to carry a peg 23 into the driving position, a peg driver 24 adapted for vertical movement to drive the peg from the peg carrier into the hole in the work piece, and a Presser foot 26 adapted for vertical movement to bear against the work piece during certain portions of the machine cycle.

The awl 18 is mounted on the lower end of a rack 28, which is reciprocated vertically by a centrally pivoted double-ended sector gear 30.

The gear 30 is driven by an arm 32 connected to a bell crank lever 34 which carries a cam follower 35 disposed in cam track 36, the arm being connected to the bell crank lever through a yieldable connection 37 to permit the awl to come to rest on its downward stroke when it strikes the metal plate on the bottom of the last, as disclosed in said Goddu Patent 1,849,253.

The work feeding and positioning tool 20 is pivotally mounted at one end to the lower end of support arm 38 at pivot 40, the upper end of said arm being pivotally mounted in the machine frame at 42. Vertical movement of the tool 20 about the pivot 40 is accomplished by linkage 44, comprising a pivot arm 46 secured to the tool 20 between the pivot 40 and its opposite end, and a toggle 48, the upper end of which is secured to the machine frame. An operating rod 50 is secured to the knee 52 of the toggle and extends rearwardly to a pivotal connection with one end of a rocker arm 54, which is pivoted at a medial portion to the machine frame. The other end of the rocker arm 54 carries a cam follower 56 disposed in cam track 57 on the main shaft 16 to cause reciprocating motion of the operating rod 50, causing vertical reciprocating motion of the support arm 46 and the tool 20 about pivot 40. Lateral feeding movement of said tool is accomplished by rocker arm 58 which is mounted at a central portion at pivot 60 to the machine frame. The upper end of the rocker arm 58 carries a cam follower 62 disposed in cam track 64, and the lower end is joined to tool 20 by a connecting arm 66, so that rocking movement of'the arm 58 causes lateral reciprocation of said tool, in timed relation to the vertical reciprocation, as will appear hereinafter.

To effect feeding and positioning of the work piece in response to the motion of the tool 20, the tool is provided with an aperture 67 with a downwardly projecting boss 68 being disposed about aperture on the lower side of the tool, and a flared guide recess 69 disposed about the engagement between the boss 68 and the work piece, the boss 68 may have a relatively sharp lower peripheral edge. the aperture 67 back and forth between a first position in which the aperture 67 is aligned with the awl 18 and a second position in which the aperture 67 is aligned with the peg drive 24.

The peg carrier 22 is mounted on the forward end of slide 70, which is adapted to move the carrier forwardly and backwardly from a rear peg receiving and cut-off station (see FIG. 2) to a forward peg driving position (see FIG. 4) by means of a lever 71 centrally pivoted to the machine frame at 72, and having a sector gear 74 at one end engaging a rack 76 on the slide 70 and a cam follower 78 on the other end disposed in cam track 80.

The peg carrier 22 comprises an outer housing 82, within which is mounted a peg receiver 84 having a central peg-receiving aperture, and a rounded nose portion 86 projecting below the housing 82. The receiver 84 is movable upwardly in the housing 82 against the force of a spring 88 to facilitate movements of certain portions of the mechanism during the machine cycle as will appear hereinafter.

When in its rearward position (see FIG. 2) the peg carrier is in alignment with a feed channel 90 through which the peg material may be fed from a continuous roll (not shown). The peg feeding means, with an associated mechanism for measuring the length of the peg in accordance with the depth of the hole punched by the awl, does not form part of the present invention, but is fully illustrated and described in the above-mentioned patents. The feeding mechanism is adapted to feed the proper length of peg material into the peg carrier when said carrier is in the rearward position so that on forward movement of the carrier 22, the portion of the peg material disposed in the carrier is sheared off and carried forwardly to the peg driving position in timed relation to the other portions of the mechanism, as will appear hereinafter.

The peg driver 24 is adapted for vertical reciprocating movement and is carried on the lower end of a slide 92 having a rack 94 at the upper end meshed with a sector gear 96 on one end of a rocker arm, which is pivoted to the machine frame at a medial portion and has a cam follower 98 disposed in cam track 100 on the main shaft.

The presser foot 26 is adapted for vertical reciprocating The lateral feeding movement of the tool moves movement and is disposed on the bottom end of a linkage 102 secured to one end of a rocker arm 104 which is pivoted to the machine frame at a medial portion and has a cam follower 106 at the other end disposed in cam track 108.

The machine cycle is initiated, in the manner described in the above-mentioned patents, by pressing a treadle to engage the clutch mechanism (not shown) to cause rotation of the main drive shaft. Means is provided to stop the drive shaft in a predetermined position each time a treadle is released so that the machine elements will be in a proper position for starting a fastener inserting cycle.

As illustrated in the cam timing chart (FIG. 9), when the machine is in the starting position, the awl 18 is in the up position, the peg feeding mechanism is inactive, the peg carrier 22 is in the retracted position preparatory to receiving a length of peg material, the shoe feeding and positioning tool 20 is in the raised and retracted position with the aperture 67 therein being disposed beneath the awl 18, the peg driver 24 is in the up position, and the presser foot 26 is in the down position. (See FIGS. 1 and 2.)

When the operator places a last carrying a partially fabricated shoe onto the work support 14 and actuates the jacking mechanism, the heel end of the shoe is forced upwardly against the presser foot 26. The operator then depresses the machine starting treadle, commencing rotation of the main shaft 16. During the first portion of the rotation of the shaft the following machine element motions occur substantially simultaneously (see FIGS. 3 and 6):

(l) The awl 18 descends through the hole 67 in the tool 20 and punches a hole in the work piece;

(2) The tool 20 moves downwardly into engagement with the work so that the boss 68 presses into the surface of the work around the awl; and

(3) The peg feeding mechanism (not shown) advances a piece of peg material into the peg carrier.

Thereafter the following machine element motions occur: the awl 18 retracts out of the work piece and out of the aperture 67 of the tool 20, the presser foot 26 moves upwardly away from the work piece so that the upward force being applied to the shoe by the jack is resisted only by the tool 20, the peg carrier 22 moves forwardly shearing off the length of peg material disposed therein and carries the peg into alignment with the peg driver 24, and the tool 20 shifts laterally (to the left as seen in FIG. 1) moving the shoe so that the hole punched by the awl is disposed beneath the peg carrier 22 in alignment with the peg aperture 85. After the peg and the shoe are in position, the peg driver 24 descends through the aperture in the peg receiver, and through the aperture 67 in the tool 20, driving the peg 23 into the hole, and the presser foot 26 descends to again bear against the shoe and take over the load of the upward force being applied by the jack. Thereafter, the machine elements return to their original starting position in preparation for the next fastener inserting cycle, as follows: the tool 20 moves upwardly to disengage the boss 68 from the work piece and then moves laterally back to its original position with the aperture 67 positioned below and in alignment with the awl 18. The peg driver 24 retracts out of the peg carrier 22 and the peg carrier retracts to its original position with the aperture 85 of the peg receiver in alignment with the peg feed channel 90.

It will be noted that the tool 20 starts its upward movement before the peg carrier 24 has retracted, since the retraction of the peg carrier cannot start until the peg driver has retracted out of the peg carrier aperture. Such upward motion of the tool 20 is permitted by the fact that the peg receiver may also move upwardly against the spring 88 far enough to permit the boss 68 to become disengaged from the shoe before the tool 20 commences to move laterally back to its original position. The rounded nose 86 facilitates the lateral movement of the tool 20 out from under the peg receiver, while the spring 88 is still urging the peg receiver against the guide recess 69 in the upper face of the tool.

During the insertion of a series of fasteners around the heel seat of a shoe it is necessary that the operator turn the shoe in cooperation with the feeding movement imparted by the machine so that the line of fasteners will be in a predetermined pattern. In previous fastener inserting machines of this type if the operator applies too much turning force to the shoe at the wrong time in the machine cycle, the awl may be bent, or the hole punched by the awl may be moved out of registration with the peg driver so that the peg will not enter the hole. However, in the herein-described machine the work piece is under the positive control of the boss 63 at the hole punching position, at the peg driving position, and during lateral movement of the Work piece between these two positions. Hence, any movement of the shoe can only be pivotal movement about the boss as a center, thereby eliminating any possibility of misregistration of the peg with the hole.

Although in the illustrated embodiment the machine is shown as being adapted for driving fiber pegs, it will be understood that by suitable modifications within the scope of the invention, it may also be used for driving other types of fasteners.

Since certain other obvious modifications may be made in the device without departing from the scope of the invention, it is intended that all matter contained herein be interpreted in an illustrated and not a limiting sense.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

l. A machine for performing two successive operations on the same area of a work piece, comprising first means for performing the first operation on said area, second means spaced laterally therefrom for performing the second operation, and indexing means for moving Work pece laterally on completion of the first operation to position said area in alignment with said second means, said indexing means having means engaging the work piece about the periphery of said area during the indexing movement so as to prevent lateral shifting of the work piece in relation thereto but permitting pivotal movement thereof about the center of said area.

2. A fastener inserting machine comprising means for preparing a position on a work piece for receiving a fastener, fastener applying means disposed in spaced relation to said first-named means, indexing means for moving the work piece after the operation of said first-named means to shift said position into alignment with the fastener applying means, said indexing means engaging the Work piece to prevent lateral movement thereof in relation to the indexing means but permitting pivotal movement thereof about said position.

3. A fastener inserting machine comprising means for preparing a position on a work piece for receiving a fastener, fastener applying means disposed in spaced relation to said first-named means, and indexing means for moving the work piece laterally after the operation of said first-named means to shift said position into alignment with the fastener applying means, said indexing means having Work engaging means positioned to be disposed peripherally about said position to prevent lateral movement thereof in relation to said indexing means but permitting pivotal movement thereof about said position.

4. A fastener inserting machine comprising an awl for punching a hole in a Work piece, fastener applying means spaced laterally from the awl, and indexing means for transferring the Work piece laterally to align a hole punched by the awl into alignment with the fastener applying means, said indexing means having positioning means for engaging the work piece to prevent lateral shifting thereof in relation to the indexing means but permitting pivotal movement of the work piece about the axis of the punched hole.

5. A fastener inserting machine comprising an awl for punching a hole in a work piece, fastener applying means spaced laterally from the awl, indexing means for transferring the work piece laterally to align the hole punched by the awl with the fastener applying means, and a boss on the indexing means positioned to engage the work piece peripherally around the punched hole to prevent lateral movement of the work piece in relation to the indexing means, yet permit pivotal movement of the work piece about the axis of the punched hole.

6. In a fastener inserting machine comprising an awl for punching a hole in a work piece and means spaced laterally therefrom for inserting a fastener into said hole, the improvement comprising an indexing tool having positioning means adapted to engage the surface of the work piece peripherally about the punched hole before the awl is withdrawn therefrom and remain in engagement therewith during an indexing operation which transfers the work piece to align the hole with the fastener inserting operation, said positioning means permitting pivotal movement of the work piece about the hole but preventing lateral movement of the work piece in relation to the indexing tool.

7. A fastener inserting machine adapted to insert pegs into punched holes around the heel seat of a partially fabricated shoe, comprising an awl for punching said holes, peg inserting means spaced laterally from said awl a distance equal to the desired spacing between the pegs, an indexing tool adapted to engage the surface of the heel seat around the awl when a hole is punched therein, means for maintaining said indexing tool in engagement with the heel seat and moving it laterally after the awl is withdrawn into alignment with the peg driver, and means for disengaging said tool from the heel seat after the peg is driven and returning it to its original position.

8. In a fastener inserting machine adapted to insert pegs into punched holes around the heel seat of a partially fabricated shoe, having an awl and a peg driver disposed in lateral spaced relation, the improvement comprising a Work feeding tool having an aperture with a projecting boss disposed about the aperture, means positioning said tool aperture in alignment with the awl, means causing said tool to bear against the heel seat when the hole is punched so that the boss engages the heel seat around the hole and prevents lateral movement of the shoe in relation to the tool but permits pivotal movement of the shoe around the axis of the punched hole, means operative after said awl is withdrawn from the hole for moving said tool laterally while bearing against the heel seat to move the tool aperture into alignment with the peg driver, and means lifting said tool out of engagement with the heel seat after the peg has been driven and back to its original position with the aperture therein in alignment with the awl.

References Cited in the file of this patent UNITED STATES PATENTS 354,052 Eppler Dec. 7, 1886

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