US2877474A - Twin sole press - Google Patents

Description

March 17, 1959 s. GLICKMAN TWIN SOLE PRESS Filed July 9, 1957.

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- Jae QZIZA'MV United States Patent ()fi 2,877,474 Patented 15- Fice 2,877,474 TWIN SOLE PRESS s01 Glickman, Baldwin, N. Y. Application July 9, 1957, Serial No. 670,811 2 Claims. (Cl. 12-36) This invention relates to shoe manufacturing equipment and more particularly to a pressure device for applying outer soles to shoe uppers.

Ordinarily, several operations are required to secure the outer sole of a shoe to the upper, particularly when it is desired to process such shoes in pairs. In many cases, the adhesive is first applied to the adjacent surfaces of the parts, with each other, and then the assembly is secured within a clamp for providing sutficient pressure to cause the cement to adhere. These many steps not only increase the cost of production, but make for additional errors in assembly and consequently result in the loss of valuable time. It is therefore an object of the present invention to provide a shoe processing machine for attaching soles to shoe uppers that is simple in construction, eflicient in operation, and which will overcome the aforementioned difliculties.

Another object of the present invention is to provide a sole presser machine that has clamping means for simultaneously processing both shoes of the pair at the same time.

A further object of the present invention is to provide an air pressure operating mechanism for sole presser machines that have means for processing two pairs of shoes at one time, in which one pair of shoes may be applied to one set of the pressure members while the other pair is maintained under pressure by the other such pressure members, whereby substantial savings in manufacturing time and cost may be effected in a simple and efiicient manner.

All of the foregoing and still further objects and advantages of this invention will become apparent from a study of the following specification, taken in connection with the accompanying drawing, wherein:

Figure 1 is a front elevational view, with parts broken away, of a machine made in accordance with the present invention;

Figure 2 is a transverse cross sectionalview taken along line 2-2 of Figure 1;

Figure 3 is a schematic diagram showing the air pressure operating system of the machine shown in Figures 1 and 2;

Figure 4 is an enlarged perspective view showing certain parts forming a subassembly of the present invention;

Figure 5 is a cross sectional view taken along line 5-5 of Figure 1;

Figure 6 is a cross sectional view taken along line 6-6 of Figure 4;

Figure 7 is an exploded view of certain other parts of the present invention; and

Figure 8 is a cross sectional view taken along line 8+8 of Figure 4.

Referring now to the drawing, and more particularly to Figures 1 and 2 thereof, a sole presser machine 10 made in accordance with the present invention is shown to include a housing 12 which forms a base for the anthe parts brought into engagement paratus. A pair of upwardly extending support'arms 14 support operating cylinders 16 which include downwardly extending plungers 17 and pistons 18. Ina'manner hereinafter described, actuation of the cylinder'16 is operative to efiect the reciprocating vertical movement of the plungers and pistons thereof. Actually, each such cylinder and piston assembly is operative to processjja complete pair of shoes, two such cylinder assemblies being shown in the drawing.

An H-shaped carriage 20 is end of each plunger 17 and is provided with a rectan'gjuilar plate 21 beneath each leg 22 thereof. The plates 21 are supported for reciprocating vertical movement relative to the respective leg 22 by means of stud pins 23 which are threaded into the plate at one end and are provided with enlarged heads 24 at the opposite end,'"'a's in Figure 6. Compression springs 25 encircle each of the pins 23 and are received within recesses 27 of the frame leg 22, so as to yieldably urge the plate 21 in an outwardly downward direction. With reference now to Figure 4 of the drawing, it will be noted that a toe slider 30 is slidably supported upon the out-'- wardly extending flanges defined by the one end of the plate 21 on each of the legs 22 of the H-shaped carriage. A toe pressure pad 31 is secu'red'to the lower endbf the slider and is adapted to be vertically adjusted y means of the threaded stud 32 so that the initial pos itioii of the pad 31 relative to the toe portion 33 Of ashore upper 34 supported upon a last 35 may be set. The opposite end of each plate 21 slidably supportsa heel slider 36 which has a downwardly'depending anvil 37 for engaging the upper end of the last 35. Thumb screws 38 associated with each of the sliders 30,36 permit longitudinal adjustment thereof and also permit them to be removed for replacement or repair.

A pair of resilient pads 39 are supported within each of a pair of laterally spaced trays '40 carried upon the top of the work table 41 of the housing. Each one of these trays serves as .a retainer for a pair of shoes, and these are secured to the table, such as by screws 42,=in the manner shown in Figure 7. An E-shaped frame 43 is slidably supported upon the base of the tray 40'a'nd supports a pair of laterally extending and longitudinally spaced parallel rods 44 for reciprocating longitudinal movement relative to the tray 40 and to the H-shaped frame 20. A threaded stud 47 is rotatably supported upon a bearing collar 48 carried by the front end of the tray 40 and is in threaded engagement with a threaded plate 45 secured to the frame 43, whereby the longitudinal position of the rods 44 relative to the tray and pads. may be adjusted. As is more clearly shown in Figure '6, the position of the rods is adjusted so that they fornr stops which limit the downward movement of the re-- silient pads 39 in the vicinityof the arch and the toe of the last so that the more uniform pressure is exerted against the soles of the shoes being worked. The'conr pression springs 25 carried by operate with the various sliders and resilient pads to secured to the outer lower ious parts of the shoe. Y 0

Referring now to Figure 3 of the drawing, the air pressure operating means and control system for the ap'-; paratus is shown to include a separate supplyline 50 communicating with the upper extremity of the cylinders" the supply lines 50 communicate with the common bore 51 within a four way valve assembly 52, with which bore 51 a main pressurized air supply'line 57 also comthe H-shaped frame co ing duct between the main supply line 57 and either one of the cylinder supply lines 50, depending upon the particular position thereof relative to the common bore 51. In a central position, the central boss 53 is operative to seal off the line 57 from communication with either of the cylinder supply lines. An exhaust port 58 at each extremity of the common bore 51 provides communication between the respective cylinder supply lines and a common passageway 61 which leads through an outlet '62 to an exhaust expansion duct 64. Threaded adjustment plugs control the rate of discharge of the exhaust air out of the operating cylinders 16. It will thus be recognized that as the slider 54 is moved from one position to the other, one main cylinder 16 will be actuated while the other thereof is exhausted. An auxiliary supply line 67 that is connected directly to the main supply line 57 is in communication with a pair of piston return lines 73 which are operative to supply pressurized air to the lower extremities of the cylinders 16 to constantly urge the pistons 18 from the extended downward position 18a to the withdrawn retracted position 18 so that upon release of the pressure air from the main upper part of the cylinder 16 through the lines 50, this auxiliary pressure is operative to raise the piston and plunger assemblies to release the shoes being Walked upon. However, the pressure supplied to the auxiliary return lines 73 is reduced by means of a pressure regulator that is adjustable and which has an inlet pressure gauge 79 and an outlet pressure gauge 71 so that the minimum amount of pressure required to lift the piston and plunger assemblies may be supplied. A lubrication and air control unit 75 is also disposed in the main supply line 57 which is connected directly to the compressor line 79. This unit includes a manually adjustable pressure regulator 77, an air filter 76, and a spray injection unit 78 for supplying a lubricant to the air that is delivered to the various valves and cylinders.

Referring now to Figures 1 and 3 of the drawing, the manually operated control means for operating this apparatus is shown to include a crank arm 80 that is secured to a rock shaft 82. The outer end of the arm 80 is pivotally connected to the valve slider 54 by means of a-pivot pin 81, while the rock shaft 82 is supported for rotation about its longitudinal axis upon a bearing 83 carried by the housing 12. The outer end of this shaft 82 is provided with a foot pedal 85 having a foot pressure plate 86 at diametrically opposite sides thereof. Thus, by exerting a downward pressurein the direction of the arrow shownin Figure 3, upon the pressure plate 86, the four way valve 52 will be adjusted to the position shown in Figure 5, in which position pressurized air from the main'supply line 57 will be supplied directly to the top of the right hand operating cylinder 16 to force the piston 18 contained therein to the downward extended position 18a so as to bring the toe and heel sliders carried by both :legs 22 of the associated H-carriage downwardly into engagement with the respective toe and heel portions of the last and shoe supported upon the resilient pads 39, as shownlin Figure 6, from the released position 3511 to adepressed operative position 35. In this position, the rods 44 aid to distribute the pressure evenly over the various parts of the shoe to efiect uniform adhesion of the parts. In the same position of the rock shaft, the other pair of shoes are released by the upward movement of the left plunger 17 under the action of the auxiliary line pressurized air entering the lower end of the cylinder 16 toraise the piston 18 as the pressurized air therefrom is discharged through the line 50 and the exhaust duct 64. The next pair of shoes to be processed may then be placed on the left hand assembly of the machine, after which the rock shaft 82 may be rotated in the opposite direction by exerting a downward ,pressure upon the left foot pressure plate 86 to effect the same operation invclving the alternate assemblies.

While this invention has been described with particular reference to the construction shown in the drawing, it is to be understood that such is not to be construed as imparting limitations upon the invention, which is best defined by the claims appended hereto.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A twin sole attachingmachine for attaching a plurality of shoe soles to an equal number of shoe uppers simultaneously comprising, in combination, a main housing having a work support table defining two work stations, upwardly extending said support arms adjacent to each said work station, a retainer for supporting a pair of shoes upon said work support table at each work station, a pneumatic pressure cylinder secured to each one of said support arms, a piston slidably supported within each one of said cylinders for reciprocating vertical movement relative to each of said shoe retainers, a pair of H-shaped members each having a pair of spaced parallel sides and each being rigidly secured to one of said piston rods, a plate supported beneath each one of said sides of said H-shaped members for reciprocating movement in a direction perpendicular to the plane of each side of said H-shaped members, springs acting between each said plate, causing each plate to be independent of each other of each side of H-shaped members, and each side resisting movement of each said plate toward said respective side of said H-shaped members, toe and heel anvils slidably carried by each one of said plates for reciprocating longitudinal adjustable sliding movement therealong, said anvils being adjustable in length in a direction normal to said planes of said H-shaped members, a source of pressurized air for actuating said piston rods, valve means for selecting the pressure of air supplied to said cylinders,and a foot responsive mechanism for actuating selective ones of said pistons.

2. A twin sole attaching machine as set forth in claim 1 wherein each one of said shoe retainers comprises a tray secured to said work support table, a pair of separate resilient pads supported in side by side relationship within said retainer and being yieldable in a direction perpendicular to said planes of said H-shaped member and said trays to conform to the shape of the soles of each shoe last in response to a pressurized force exerted thereupon, a plurality of longitudinally spaced apart parallel bars supported within each said tray for adjustment within a plane parallel to the plane of said pads and in a direction normal to the longitudinal axes of said bars, an E-shaped support plate slidably supported Within each said tray, said bars being secured in spaced parallel relationship upon each said plate, and screw threaded means for effecting longitudinal movement of said plate to adjust the position of said bars within said plane of'adjustment, said bars being positioned beneath said resilient pads for limiting downward movement of a shoe part supported upon said pads during downward movement of said respective pistons.

References Cited in the. file of this patent UNITED STATES PATENTS 1,916,265 Hammarsjo July 4, 1933 2,427,607 Kamborian Sept. 16, 1947 2,442,167 Grifiith May 25, 1948 2,611,143 Gulbrandsen Sept. 23, 1952 FOREIGN PATENTS 346,500 Germany Jan. 3,1922

385,131 Great Britain Dec. 22, 1932

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