JPS6359907A - Holding apparatus for feeding last - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A0Objectives of the invention (1) Industrial field of application The present invention provides a method for transporting shoe lasts for manufacturing shoes from one position, for example on a conveyor, to another position, for example on an injection molding machine for shoe soles. The present invention relates to a holding device for transporting shoe lasts used for transporting shoe lasts.

(2) Prior art Shoe lasts used to manufacture shoes generally have a three-dimensional complex curved outer surface, are relatively heavy and slippery, and can be moved from one position to another. It is difficult to accurately mechanically transport shoes to the desired position, and conventionally, workers have to hold them while carrying them, or they have to be held in a shoe last holder on a transport device using a non-slip member such as rubber. I have to.

(3) Problems to be solved by the invention However, when conveying by hand, it is labor-intensive and inefficient, and when conveying via a non-slip member, vibrations and shocks of the conveying device occur during conveyance. There is a problem in that the holding position of the shoe last holder relative to the shoe last shifts, making it difficult to achieve positional accuracy for installing the shoe last at a predetermined position.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a shoe last transport holding device that can reliably hold a shoe last during transport and accurately place it in a predetermined position. It is something to do.

B0 Structure of the Invention (1) Means for Solving Problems In order to achieve the above object, the present invention comprises a shoe last and a shoe last clamping device attached to the tip of a conveying member for holding the shoe last. , the shoe last is integrally provided with a pinched part having both sides formed as flat surfaces at the end of the shoe last, and a plurality of tapered pin holes are formed in each of the pinched parts, while the shoe last holding tool comprises a support member provided at the tip of the conveying member, a pair of clamp arms supported by the support member so as to be openable and closable, and a drive means provided on the support member for opening and closing the pair of clamp arms. A taper pin that can be fitted into the taper pin hole is integrally provided on the opposing inner surfaces of the pair of clamp arms.

(2) Operation When the driving means of the shoe last clamping tool is actuated to close the clamp arm of the shoe last clamping tool, a plurality of tapered bin holes formed in the clamped portion of the shoe last and a projecting part of the clamp arm are connected to each other. The plurality of taper pins engage with each other, whereby the shoe last is reliably clamped to the shoe last holding device, and the clamping position of the shoe last holding device relative to the shoe last does not shift. Furthermore, in this case, the clamped portion is formed into a flat surface so that it can easily come into close contact with the inner surface of the clamp arm, so that the clamping effect is not impaired.

(3) Example Hereinafter, an example of the present invention will be described with reference to the drawings. In the figure, 1 is a shoe last transfer section, and the shoe last from which the shoe cover 2 is suspended is as follows: The shoe last is conveyed to the injection molding machine 4 via the shoe last conveyance device 5, and after the sole 3 is injection molded onto the shoe cover 2 by the injection molding machine 4, the shoe last is transferred again via the shoe last conveyance device 5. It is transported to section 1.

The shoe last transfer unit 1 transfers the pallet 8 transferred by the chain conveyor 7 disposed on the base frame 6 to a carry-out position PI and a carry-in position P Z shown in FIG.
Stopper mechanisms 9I, 9z and 9.I, 9z and 9.I for stopping at standby position Pw before I and Pi. l, and a pallet lifting mechanism 1 for floating the pallet 8 above the transfer conveyor 7.
0, and a shoe last attaching/detaching mechanism 11 for attaching and detaching the shoe last to and from the pallet 8 (see FIGS. 3 and 8). Then, on the pallet 8 at the carry-out and standby positions PH, Pw, there is a shoe last with a shoe cover 2 suspended thereon, and at the carry-in position P2, a shoe last having a shoe cover 2 on which a shoe sole 3 is injection-molded. is now gaining support.

The pallet lifting mechanism 10 includes a positioning frame 14 that can be raised and lowered relative to the base frame 6, and a pair of hook-shaped locking members 15 and 15 are fixed vertically at both ends of the base frame 6. will be established. Therefore, when the pallet 8 is at the unloading or loading position PI, Pg, the positioning frame 1
4 is raised, the tip of the frame 14 touches the pallet 8.
The pallet 8 is fixed at a height where both ends of the pallet 8 engage with the hook-shaped portions 15', 15' of the locking member 15.15.

As clearly shown in FIG. 8, the shoe last is integrally provided with a clamped part Ll whose both sides are formed into substantially parallel flat surfaces at the end on the shoe opening side. A plurality of taper pin holes 36... are formed on both sides of each. Further, the shoe last (2) and the bullet 8 are provided with positioning and holding means 18 for removably fixing the shoe last (2) in an inverted state at a predetermined position on the bullet 8J-. This positioning and holding means 18 will be explained with reference to FIG.
There are unpaired engagement grooves 12 at the bases on both sides of the clamped portion.
12 is provided along the front-rear direction, and a tapered pin hole 45 is bored in the base end surface of the held portion. On the other hand, a taper pin 46 that can be fitted into the taper pin hole 45 is provided protrudingly on the bullet 8, and a pair of guide blocks 47, 47 are fixedly provided. In addition, the above-mentioned ballen 1-8
On one side, a pair of engagement grooves 2.12 of the clamped portion L1 that can move forward and backward into the barrette 80 and be guided by the pair of guide bliniaks 47.47. A shoe last engaging member 48 is provided with insert pieces 48+ and 41'L. Then, the taper pin 46 is fitted into the taper pin hole 45, the shoe last I is placed on the pallet 8, and the insert piece 48 of the shoe last engaging member 48 is inserted. ．． 48. By inserting the shoe last into the engagement groove 12.12 and engaging them, the shoe last 8J- is positioned and held in an inverted state on the bullet 8J-.

On the - side of the shoe last transfer section 1, the base frame 6 is provided with the shoe last attaching/detaching mechanism 11 capable of releasing the positioning and holding function of the positioning and holding means 18 for the shoe last I7.

This shoe last attaching/detaching mechanism 11 includes a pair of fork pieces 11. ．． Equipped with an IL, the hawk piece 1
11, 111 and move the connecting piece 482 in the direction indicated by the arrow in FIG. ．． 48
．． can be pulled out from the guide blocks 47, 47 to remove the shoe last I from the valet 8. Note that by performing the operation in reverse to the above, the shoe last can be firmly connected to the valet 8''.

Next, the shoe last transport device 5 will be explained. The shoe last transport device 5 is comprised of two first and 20th bots R1 and R2, as shown in FIGS. 1 and 2. These robots) R+, R2
have the same structure and are conventionally known, so the 10th
To briefly explain the configuration of Poa) R1, a main swing column 20 is supported on a foundation 19 so as to be able to freely rotate around a vertical axis, and the base end of a lower arm 21 is attached to the upper part of this main swing column 20, and the base end of a lower arm 21 is connected to a horizontal axis. Furthermore, the proximal end of an upper arm 22 is supported at the distal end of the lower arm 21 so as to be swingable about a horizontal axis. The hand portion 23 at the tip of the upper arm 22 is rotatable around the vertical axis, horizontal axis, and vertical axis of the upper arm 22. The rotating main pillar 20, the lower arm 21, the upper arm 22, and the hand portion 23 constitute a shoe-shaped conveying member 24.

Therefore, the above-mentioned No. 1. The 20th robot I/R+ and Rz are six-axis controlled automatic robots that operate according to a predetermined program.

1st. 20th item) R+, Rz conveying member 24.2
A shoe last clamp holder 25 for holding the shoe last is attached to the tips of the shoes 4, that is, the hand parts 23 and 23, through brackets 26, respectively.

Next, this shoe last clamp holder 25 will be explained with reference mainly to FIGS.
A pair of plate-shaped clamp arms 28, 28 having a bent portion 17 at the base end are disposed on both sides of the clamp arm 7. A mounting piece 2 is provided on the opposite surface of the bent portion 17 and 17 of the clamp arms 28, 28.
9.29 is connected to the pivot pin 30.30, and the mounting piece 29.
It is pivoted by 3.33. Further, the base end portion of the piston 34 that is slidably fitted into the cylinder body 31 and the mounting piece 29
．． 29 is a pair of grooves 311.31.29 formed on the side surface of the cylinder body 31. The piston 34 is connected via a pair of links 44, 44 that can move within the
When moved back and forth, the link 44.44 also moves, so that the clamp arms 28, 28 can be pivoted about the pivot hinge 33.33 to open and close the arms 28.28. The cylinder body 31 constitutes a support member for supporting the clamp arms 28, 28, and the cylinder device 27 and links 44, 44, etc. constitute a driving means 13 for opening and closing the clamp arms 28, 28. .

A plurality of taper pins 35 are protruded from the opposing inner surfaces of the free ends of the pair of clamp arms 28, 28, respectively, and these taper pins 35 are connected to shoe-shaped clamped parts, The plurality of tapered pin holes 36 and
. . , and can clamp the clamped portion L1.

The shoe last conveying holding device H of the present invention is composed of the shoe last and the shoe last holding tool 25.

Next, the operation of this embodiment will be explained with reference to FIGS. 1 to 5. When the pallet 8 supporting the shoe last with the shoe cover 2 hung thereon is positioned and stopped at the carry-out position P, the shoe last is removed from the pallet 8 by the operation of the shoe last attaching/detaching mechanism 11 and the pallet lifting mechanism 10. After separation, the clamped part of the shoe last is positioned between the clamp arms 28 of the shoe last clamping tool 25 provided on the hand part 23 of the tenth bottle R1, and then the cylinder device 27 is activated. Clamp arm 28
．． 28 is closed. Then, the plurality of tapered pins 35 protruding from the clamp arm 28 engage with the plurality of taper pin holes 36 of the held part L+, thereby clamping the held part L+. This prevents the shoe last from slipping within the shoe last holding tool 25 and causing positional deviation. Further, since the clamped portion is formed as a flat surface, it has good adhesion to the inner surface of the clamp arm 28, and the clamping effect is not impaired.

Next, the 10th drop) R+ puts the shoe last on pallet 8.
After taking it out, the shoe last is reversed 1806 to stand upright, turned in the direction of arrow A in FIG. 2, transferred to a predetermined position in the injection molding machine 4, and then installed there. in this case,
As described above, since the shoe last is securely held by the shoe last holding tool 25 without being displaced, positional accuracy for installing the shoe last at a predetermined position in the injection molding machine 4 can be easily achieved. Then, the shoe last holding tool 25 is released and the hand portion 23 of the tenth bottle R+ is removed from the shoe last.

On the other hand, the empty pallet 8 from which the shoe last has been removed at the carry-out position WPI is transferred to the carry-in position P2, and is positioned by the stopper mechanism 9□. Next, the shoe last having the shoelace 2 on the bottom of which the sole 3 is injection molded by the injection molding machine 4 is clamped and pulled out by the 20th bottle Rz, turned around 180 degrees, and placed in the empty space at the carry-in position P2. The shoe last is mounted on the pallet 8, and the shoe last is removed from the 20th bot R2 by releasing the clamp of the shoe last holding tool 25.

Then, the shoe last is positioned and held at a predetermined position on the pallet 8 by the operation of the shoe last attaching/detaching mechanism 11, the positioning and holding means 18, and the pallet lifting mechanism 10. And then the removal position lol
carrying out the shoe last from the pallet 8 of P, by the 10th bot R1 and transferring the shoe last to the injection molding machine 4; taking out the shoe last from the injection molding machine 4 by the 20th bot R2; The loading of the shoe last onto the empty pallet 8 at the carry-in position P2 is set to be carried out synchronously.

The operation of transferring shoe lasts between the chain conveyor 7 and the injection molding machine 4 by the two robots R, , R described above is performed continuously.

Incidentally, the injection molding machine 4 is a conventionally known machine, and includes a turntable (not shown) that rotates about a vertical axis, and a large number of molding tables 37 are installed radially on the table. As shown in Figures 1 and 2, each molding table 37
A support column 38 is erected above, and a shoe last support block 39 is supported by the support column 38 via a guide 40 so that its vertical position can be adjusted. The shoe last support block 39 has a rotating body 41 arranged along an axis p- which is inclined outwardly and downwardly.
It is rotatably supported around P, and a pair of shoe lasts are detachably attached to this rotating body 41 via a shoe last attachment/detachment support mechanism 42. Furthermore, an assembly mold 43 for injection molding the shoe sole 3 onto the shoe cover 2 is mounted on each molding table 37.

C9 Effects of the Invention As described above, the present invention comprises a shoe last and a shoe last holding tool that is placed at the tip of a conveying member and holds the shoe last, and the shoe last is attached to the opening side of the shoe last. A clamped part with flat sides on both sides is integrally provided at the end, and a plurality of tapered pin holes are formed in each clamped part, while the front-mounted clamping tool has a clamping part formed at the tip of the conveying member. A support member provided thereon, a pair of clamp arms supported by the support member in a freely openable and closable manner, and a driving means provided on the support member for opening and closing the two pairs of clamp arms. Taper pins that can be fitted into the taper pin holes are integrally provided on the opposing inner surfaces of the clamp arm 11, so when the driving means is actuated to close the clamp arm,
The plurality of taper pin holes and the plurality of taper pins engage to securely clamp the shoe last, and therefore, the clamping position of the shoe last holding tool relative to the shoe last does not shift due to vibration or impact of the conveying member during transportation. This makes it easy to achieve positional accuracy for installing the shoe last in a predetermined position. The clamped portion L7, which has a tapered pin hole formed therein, is formed into a flat surface so that it can easily come into close contact with the inner surface of the clamp arm, so that the clamping effect is not impaired.

[Brief explanation of drawings]

The drawings show one embodiment of the device of the present invention, and FIG. 1 is an overall side view of the shoe last transfer device, FIG. 2 is a plan view of FIG. 1, and FIG. Enlarged cross-sectional view, Figure 4 is Figure 3 T
FIG. 5 is a plan view of the clamp section in the closed state; FIG. 6 is an enlarged cross-sectional view of the driving means of the clamp section; FIG. 7 is a cross-sectional view taken along the line V-IV; FIG. 8 is an exploded perspective view of the shoe last attaching/detaching mechanism and the positioning and holding means. ■...Shoe last transport holding device, ■,...Shoe last, ■, I
...Gripped portion, 13...Drive means, 24...Transporting member, 25...
Shoe last clamping tool, 28... Clamp arm 31... Cylinder body as a support member, 35... Taper pin,
36...Taper pin hole

Claims (1)

[Claims] The shoe last is composed of a shoe last and a shoe last holding tool attached to the tip of a conveying member to hold the shoe last, and the shoe last is integrally formed with a pinched part having both sides formed with flat surfaces at the end of the shoe last on the shoe opening side. A plurality of tapered pin holes are formed in each of the clamped portions, and the shoe last clamp includes a support member provided at the tip of the conveyance member, and a pair of support members supported by the support member so as to be openable and closable. A clamp arm, and a drive means provided on the supporting member to open and close the pair of clamp arms, and taper pins that can be fitted into the taper pin holes are integrally protruded from opposing inner surfaces of the pair of clamp arms. A holding device for transporting shoe lasts, characterized in that: