GB646372A - Improvements in and relating to machines for operating on the edges of soles attached to footwear - Google Patents

Abstract

646,372. Edge-setting. BATA, NARODNI PODNIK. Sept. 17, 1946, No. 27831. Convention date, March 23, 1943. [Class 17(i)] A machine, for operating on a sole edge attached to a shoe in which the work support moves the sole past the tool support, has means which, when released, allows the tool post to be moved in two directions relative to the sole edge. In the edge-setting machine described, a shoe support 1, Fig. 1, is mounted for vertical and rotary movement at 2, 3. A cam system 4 on a shaft 42 driven from a motor 35 imparts the rotary motion through a toothed segment 8 and pinion 9, while a cam shaft 16 gives the vertical sliding motion through a shaft 22 and a chain and sprocket wheel connection to the slide 2. Rollers 5, 17 are kept in contact with the cams by compressed air cylinders. A bracket 50, Figs. 1, 2, is rotatable about a post 52, when a locking pin 48 is withdrawn from a recess 49 at predetermined moments in the cycle of operations on the sole, and has attached to it four levers 51, 51<SP>1</SP> pivoted for vertical movement at 53, 53<SP>1</SP>. Supported at one end is a drive transmitting device 54 and tool support 55, and at the other end, and acting also as a counterpoise, a motor 56. To one lever 51<SP>1</SP> a cylinder 60 is attached so that, when pressure is admitted below the piston 61, it is forced against an adjustable screw 62 in an arm 63 of the bracket 50, so that the tool is forced down on the sole edge against the action of a spring 64 attaching the motor end of the levers to the bracket 50. Two tools 80, 80<SP>1</SP> for operating on left and right shoes are mounted in the post on pins 91, 91<SP>1</SP>, and are moved into working position by a pneumatic cylinder 93 when operated by a valve .A toolheater 94 is provided. The oscillatory rotational movement of the tools is transmitted from the motor by a flexible belt 58 to a pulley 57, which drives a shaft 97 having an offset post 99, which by trunnions 102 on a sleeve 100 and a ball 103 gives a twisting oscillation to a pinion 65 integral with a ball 72 from which, by means of a toothed wheel and racks, the movement is transmitted to the tool. The drive transmiting device can be turned to alter the operative surface of the tool by a toothed piston 68 engaging a pinion 71 to turn the inner gear box 109, and the tool support can be moved to follow the sole edge, such movement being permitted by the ball and lug connection 72, 73. In operation, the tool can be accurately hand guided by a handle 96 close to the heel at the start and also the tool's operative point can be adjusted relative to the stationary work until the locking pin 48 is inserted into the recess 49 by a cam 43 on the shaft 42 to lock the tool while the cams 4, 16 traverse the shoe past the tool. At the end of this traverse the cam 43 again unlocks the tool support to allow the tool to be hand guided to finish the sole edge close to the heel