GB2249707A

GB2249707A - Toe lasting machine

Info

Publication number: GB2249707A
Application number: GB9024633A
Authority: GB
Inventors: So Tou Yeh
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-11-13
Filing date: 1990-11-13
Publication date: 1992-05-20
Anticipated expiration: 2010-11-13
Also published as: GB2249707B; GB9024633D0

Abstract

In a toe lasting machine the heel press block 42 and a pressing means 57 which presses down on a toe portion of the upper are actuable simultaneously so that when lasting is completed and a knife mechanism retracted pressing means 57 and block 42 move down simultaneously whereby the upper material is held flat. <IMAGE>

Description

TITLE: AN IMPROVED MECHANISM FOR A TOE-LASTING MACHINE BACKGROUND OF TRE INVENTION The present invention relates to an improved mechanism for a toe-lasting While using a toe-lasting machine, the user puts a shoe last on a supporting block of the machine and covers an upper on it and then pushes a starter button to begin operating. A plurality of fixing claws, surrounding a fore portion of the outer supporting block, grasp skirts of the upper. The supporting block then rises to a top point to stress the last to the upper, and a heel press block subsequently moves forward. When the block touches the heel of the last, a microswitch terminates the movement and actuates the base of the block to move forward, pushing the working material into a shrinking ribbon, which then clips lower lateral sides of the last.

During the engaging movement, a pressing means positioned above the last first descends to stress the engaged upper, then a knife mold slides along a bottom surface of the inner sole to perform lasting. While the knife mold moves, the claws and supporting block retract to their original position. When the lasting is completed and the knife mold is retracting, the pressing means stresses a second time to ensure that the lasting fold is affixed to the sole.

While the supporting block rises up to a top point, the last will be stressed and slide slightly backwards because of the effect of the tension of the upper, thereby causing a gap to be formed between the last and the upper near the toe portion (see Fig. 2).

This gap causes wrinkles produced to be on the upper while the working material is pushed into the ribbon.

When the pressing means stresses a second time, the sole will be bent in the central portion (see Fig. 3).

SUMMARY OF ThE INVENTION The present invention provides a driving means, connected to a supporting means and an abutting means, a securing means, and a pressing means.

The driving means fixed to a-toe-lasting machine functions as a base and has a cylinder movable back and forth. The supporting means has a supporting bar which provides support for a supporting block on an end thereof; the abutting means is mounted to the driving means by a dovetail joint and includes a slidable heel press block, the block being able to be lifted by a cylinder which communicates with the pressing means; therefore, the abutting means can move relative to the pressing means.

During the operation of abutting the heel of a shoe and pushing the shoe into the shrinking ribbon, the present invention combines the driving means and support means together, thus the lasted shoe can be supported and abutted at the same time, and then pushed into the shrinking ribbon; therefore, a gap will not occur between the upper and the last in the toe portion and a crease will not be formed during shrinking.

It is the purpose of this present invention, therefore, to mitigate and/or obviate the drawback caused by the conventional operation in the manner set forth in the detailed description of the preferred embodiment.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a toe-lasting machine; Fig. 2 is an enlarged scale partial view showing the gap occurring after the work material is lifted to a top point, wherein the knife mold and the shrinking ribbon is shown in phantom line; Fig. 3 is a left-side elevation view illustrating the bent condition of a shoe indicated by the letter C; Fig. 4 is a perspective view showing a combination of a driving means, securing means, and abutting means of the present invention; Fig. 5 is a right-side elevation view of a abutting means of this invention; Fig. 6 is a top plan view of Fig. 5; and Fig. 7 is a right-side elevation view of the present invention, wherein the moved mechanism is shown in phantom line.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to Fig. 4, a driving means 50 has a seat 13 fixedly mounted on a base 10 of a toe-lasting machine; a first slidable plate 12 slidably engaged in the seat 13 and restrained by plate strip 14 with bolts; and a microswitch 18 mounted on the seat. A frame 11 has a side wall providing a dovetail projection thereon and is fixedly mounted on the first slidable plate 12. The frame 11 also has a bracket 112 to abut the microswitch 18 for interrupting movement of the first slidable plate 12, and a cylinder 111 to control movement of-an abutting means 30.

Under the seat 13 there is a cylinder 19 (see Fig.

7 in particular) connected to the first slidable plate 12 by a bracket 17, thus while the cylinder is actuated, a rod 16 extends forwardly and draws the first slidable plate 12 to move forward, and the movement terminates when the bracket 112 contacts the microswitch 18.

In front of the seat 13 there is a second seat 21 that has a second slidable plate 20 which is connected to the slidable plate 12 by a connecting plate 15.

There is a supporting bar 531 extending from the second slidable plate 20, and an inner supporting block 53 is integral with an end of the bar 531, so the supporting block 53 and the second slidable plate 20 move coincidentally with the first slidable plate 12 of the driving means 50.

Referring to Figs. 4, 5, and 6, an abutting means 30 comprises a block 35 which has a dovetail slot and provides a engaging bracket 34. A receiving seat 41 and a cylinder 32 are fixedly and vertically mounted to the block 35. A heel press block 42, connected to a block slidably engaged to the receiving seat 41, is supported by a bracket 31 which integrates with a rod 33 of the cylinder 32. The cylinder 32 communicates with a pressing means 57. As a result, the pressing means 57 presses downward on the rod 33 of the cylinder 32, which will retract and lower the heel press block 42.

The abutting means 30 slidably engages with the driving means 50 by means of a dovetail joint, and the engaging bracket 34 penetrates the side wall of the frame 11 and engages with a rod of the cylinder 111; thus, the abutting means can adjustably move back and forth by actuating the cylinder 111 to apply to shoes with different sizes.

In operation, the skirt of the upper is grasped by claws 51, each actuated by a hydraulic cylinder, then the working material is risen by the inner supporting block 53 on the supporting bar 531 and abutted by the heel press block 42 of the abutting means 30 when pushed by the cylinder 111, rendering the last immobile. While the heel press block 42 touches the heel and stops moving forwardly, the cylinder 19 under the seat 13 is actuated and the rod 16 of the cylinder 19 extends forwardly, thus the slidable plates 12 and 20 are pushed to slide forwardly (shown in Fig.7), such that the working material is pushed into a shrinking ribbon 52 and clipped by the ribbon 52 at both sides, and coincidentally, the pressing means 57 will press down a first time.

When the bracket 112 touches the microswitch 18, the movement of the slidable plates 12 and 20 stops and the shrinking ribbon 52 clips both sides of the working material, and then a knife mold 55 is actuated to slide forwardly to last. The claws 51 and the inner supporting block 53 retract during when the knife mold is moving.

While the lasting is completed and the knife mold 55 begins to retract, the pressing means 57 stresses second time to ensure that the lasting fold affixes to the sole. When the pressing means 57 moves down, the heel press block 42 is lowered simultaneously by the effect of the cylinder 32 communicating with the pressing means 57; therefore, the working material will be flat.

It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.

Claims

I Claim:

1. An improved mechanism for a toe-lasting machine comprising, in combination: a securing means being composed of a plurality of actuatable fixing claws and a U-shape shrinking ribbon; a driving means having a fixing seat, a first sliding plate slidable on said fixing seat, a frame fixedly mounted on said sliding plate, a microswitch on said fixing seat in cooperation with a block on said frame for terminating a sliding movement of said first sliding plate relative to said fixing seat, and a first hydraulic cylinder mounted on said frame; an abutting means having a base block actuable to slide on said frame, a receiving seat, and a heel press block fixedly connected to said receiving seat, said heel press block being slidably liftable on said base block by a fourth cylinder; ; a supporting means having a base plate fixedly attached to said first slidable plate by a bracket, and a bar vertically extending from said base plate, said first slidable plate being actuatable to simultaneously move both said base plate and said heel press block of said abutting means; and a pressing means for pressing a toe portion of an upper of a shoe to a mold supported respectively by said shrinking ribbon of said securing means and said abutting means at toe and heel portion of the upper, said pressing means being actuable to move simultaneously with said heel press block of said abutting means.

2. An improved mechanism for a toe-lasting machine, substantially as herein before described with reference to and as shown in the accaTpanying drawings.