JPH01190391A - Button feeder - Google Patents

Abstract

PURPOSE:To make it possible to supply buttons with accuracy and reliability, preventing the buttons from clogging in a chute, by providing a feeding device, which sends the buttons into the chute each by each synchronizing with the action of a sewing machine or a conveyer, at the delivery port of a button tank. CONSTITUTION:Buttons B are sent from a button tank 10 to a feeding device 13 through a pass 24, and held in a vertical hole 30 while a feeding plate 35 is inserted into the vertical hole 30 so as to isolate the vertical hole 30 from a horizontal hole 31. When a sewing machine has finished stitching one of the buttons B, a carrier arm 80 of a conveying device 11 moves corresponding to a signal from a limit switch 8 to supply a new button to the sewing machine. Simultaneously, a rotary solenoid 43 is operated corresponding to a signal from a limit switch which detects the rotation angle of a crank so as to move the feeding plate 30 backwards to the position shown in the drawing with dotted lines. Consequently, the buttons B in the vertical hole 30 fall down to its bottom, and then one of them is expelled into a spring chute 12 through the horizontal hole 31 when the feeding plate is returned to its original position by the action of a spring 42.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention [Industrial Application Field 1] The present invention relates to a button feeding device for a button sewing machine used to continuously attach buttons to shirts, etc.

[Prior Art] A button tank that sequentially and continuously sends out stored buttons from a delivery port while arranging them by vibration, and a button-sewing machine that sends buttons one by one through a chute from the button tank to a predetermined position of the button sewing machine. A button supply device equipped with a transfer device for supplying buttons is used in sewing factories and the like.

In a conventional button feeding device of this type, buttons are continuously fed out from a button tank and are conveyed to a transfer device in a continuous state within a chute.

[Problem to be solved by the invention] However, since the chute described above is made with a sufficient inner diameter to accommodate buttons of various sizes,
For example, when using lens-shaped buttons with a thin outer periphery, there is a problem that the buttons overlap each other in the chute, resulting in button jams, or that the buttons cannot be fed into the transfer device one by one.

Structure of the Invention [Means for Solving the Problems] In order to solve the above problems, the present invention has the following structure.

That is, the button supply device according to the present invention includes a button tank that sequentially and continuously sends out stored buttons from a delivery port while aligning them, and a button feed device that feeds buttons one by one from the button tank through a chute. a button feeding device that feeds buttons to a predetermined position of a button sewing machine, the button feeding device feeding the buttons one by one into a chute into a delivery port of the button tank in synchronization with the operation of the sewing machine or the feeding device; [Function] Since the button tank is equipped with a feeding device that feeds the buttons one by one into the chute at the outlet of the button tank, the buttons do not overlap in the chute. , it is possible to reliably feed the buttons one by one to the transfer device at the appropriate timing.

[Example] Figure 1 shows an example of a button attaching device, and this button attaching device g
! Reference numeral 11 is a combination of a button sewing machine 2 and a button feeding device 3 according to the present invention. The sewing machine 2 is a button-sewing machine that sews buttons onto cloth by performing predetermined operations between a cloth presser plate 5 holding a button and a sewing needle 6. When the button sewing is completed, the limit switch 8 detects this and activates the button supply device 3.

The button supply device M3 includes a parts feeder-type button tank 10 that stores buttons and sequentially sends out the stored buttons from the delivery port 9, and a transfer unit that supplies the buttons fed from the button tank to the presser claw of the sewing machine. and a transfer device t from the button tank lO.
A spring chute 12 formed by winding a metal wire so as to have a flat rectangular cross section is provided as a button feed path up to i. Further, a feeding device 13 for feeding buttons one by one into the chute is provided between the button feeding port 9 of the button tank 11 and the spring chute 12.

Button tank ↓0 is a plate-shaped storage part 2 that stores buttons.
0 and a guide part 21 having a spiral guide path formed therein, and the button in the storage part 20 is gradually moved to the upper part of the guide part 21 along the guide path by the vibration from the vibration generator 22. It is adapted to move and be conveyed to the feeding device 13 through a passage 24 attached to the delivery opening 9 . Note that the guide section 21 is provided with a front/S sorter 25 for sorting the front and back sides of buttons moving on the guideway and removing buttons facing backwards.

The feeding device 13 connects the upper part of the vertical hole 30 to the passage 24, and the holding body 32 has a vertical hole 30 capable of holding an appropriate number of buttons and a horizontal hole 31 communicating with the bottom of the vertical hole. In addition, the spring shoe is provided in the horizontal hole 31.
One end of 12 is inserted. Then, the delivery plate 35 is inserted into the vertical hole 3 from the opening 34 formed on the side opposite to the horizontal hole 31.
It is protruded from the bottom of 0. This delivery plate 35 has a vertical member 37 fixed to the rear end with horizontal pins 38 and 38 protruding from it, and the lower part of the vertical member 37 is inserted into a cylindrical rotating arm 39 provided below. At the same time, the rotating arm 39
The zero rotation arm 39, in which the horizontal pin 38.38 is slidably fitted into the axial groove 40.40 formed on the side surface of the tip end thereof, is biased in the direction of arrow X by a spring 42. Therefore, the tip of the delivery plate 35 is normally connected to the vertical hole 30.
Although it is in a state of protruding inward, by driving the rotating arm 39 in the direction opposite to the arrow X using the rotorinoid 43, the tip of the delivery plate 35 is retracted from the vertical hole 30. There is.

The transfer device 11 is supplied by falling from the spring chute 12 between a base 51 having an introduction groove 50 to which the lower end of the spring chute 12 is attached and a movable base 52 provided opposite to the base. A stop part 54 is configured to temporarily stop the button, and the position in front of this stop part, which is held between the grip parts 51a and 52a of the base 51 and the movable table 52, is the delivery position 5'5 to the carrier arm, which will be described later. ing. The movable base 52 is movable along guide rods 57 and 57, and can open and close the gripping parts 51a and 52a. In the figure, 58 is a spring for promoting the movement of the gripping part 52a in the closing direction.

Further, a guide groove 60 is formed at the rear of the base 51, and an extrusion plate 61 is slidably fitted into this guide groove. The push-out plate 61 is connected to a disc-shaped crank 65 via connecting plates 63 and 64, and as the crank rotates, the push-out plate 61 moves back and forth along the guide groove 60. In addition, the connecting plates 63 and 64 have long holes 6
Porto 68 inserted into 7.67. ..., and by adjusting the fastening position of these bolts, the amount of protrusion of the extrusion plate 61 can be adjusted.

A spindle 72 is provided above the delivery position 55 and has a rubber pressing member 70 attached to its lower end and is rotationally driven by a belt 71 hung on a motor boot. This spindle 72 is supported by a support arm 74 so as to be movable up and down.

Further, a carrier arm 80 is provided on the side of the base 51 and is rotatable in a horizontal plane passing directly below the delivery position 55. At the tip of this carrier arm 8°, a carrier pin 81 is placed at a position corresponding to a buttonhole. ...is planted facing upward. The carrier arm 80 has a circular crank 8 as shown by the chain line in FIGS. 3 and 4.
By rotating the rod 84 and the arm 85
The delivery position 55 and the sewing machine supply position 87 are
It reciprocates in an arcuate trajectory between the two, and is also raised and lowered by a lifting device (not shown).

A limit switch 90 is provided near the crank 83 to detect the rotation angle of the crank, and based on the detection result of this limit switch, the rotary solenoid 43,
Since the disc-shaped crank 65 rotates, the support arm 74 moves up and down, etc., each part of the button supply device 3 operates in synchronization.

Next, the operation of this button supply device 3 will be explained.

Delivery device 13 from button tank IO through passage 24
The button B that has been carried is held in the vertical hole 30, but
Since the delivery plate 35 normally protrudes into the vertical hole and closes the openings between the vertical hole 30 and the horizontal hole 31, the button is not carried in any more than necessary.

When the sewing machine 2 finishes sewing the button B, the carrier arm 80 is actuated by a signal from the limit switch 8, and a new button is supplied to the sewing machine.

At this time, when the rotary solenoid 43 is driven based on the detection result of the limit switch 90, the delivery plate 3
5 retreats to the position indicated by the chain line in FIG. 2, and when the drive is stopped, the delivery plate 35 instantly returns to its original position by the action of the spring 42. The buttons B, . In this way, the feeding device i13 feeds out the buttons one by one into the spring chute 12 at appropriate timing in synchronization with the movements of other operating parts. Since the spring chute 12 is flexible, there is a high degree of freedom when installing the button tank 10 and the transfer device Htt, and since the friction between the spring chute 12 and the button is small, the button can be quickly and smoothly stopped in the transfer device. It can be supplied dropwise to the section 54.

When the button is supplied to the stop portion 54, the push-out plate 61
is retracted, and after supply, the pushing plate 61 protrudes and pushes the button to the delivery position 55.

Next, the movable base 52 slides in the direction of arrow Y to release the button from the grips 51a and 52a, and the spindle 72 descends to transfer the button to the carrier arm 80 waiting below the delivery position 55. At this time, the rotating force of the spindle 72 is applied to the button, so the carrier pin 81. is inserted into the hole of the button. The carrier arm 80 that holds the button easily fits into the sewing machine 2.
When the button is rotated to the supply position 87 and the button is held in the holding groove 5a of the presser plate 5, the carrier arm 80 is once lowered and is passed through the hole of the button by the carrier pin 81. . . , then returns to the delivery position 55 while rising to the original height.

C. Effects of the Invention As is clear from the above explanation, the button feeding device according to the present invention feeds buttons one by one through the interior of the button tank by providing a button feeding device at the feeding port of the button tank. This prevents buttons from clogging in the chute and allows accurate and reliable button feeding. In addition, since the buttons do not interfere with each other in the chute, buttons of any shape or size can be used, making it possible to use a variety of buttons just by preparing one chute. It is now possible to do so.

[Brief explanation of the drawing]

Fig. 1 is an overall view of a button attaching device equipped with a button feeding device according to the present invention, Fig. 2 is a side sectional view of the feeding device, Fig. 3 is a plan view of the main parts of the feeding device, and Fig. 4. is its side view.

Claims (1)

[Claims] (1) A button tank that sequentially and continuously sends out the stored buttons from the delivery port while arranging them, and transport that feeds the buttons one by one from the button tank through a chute to a predetermined position on the button sewing machine. A button feeding device comprising: a feeding device for feeding buttons one by one into a chute in synchronization with the operation of the sewing machine or the transfer device at the feeding port of the button tank. button feeding device.