Oblique decorative sheet feeding device

Abstract

An oblique decorative plate feeding device comprises a lifting mechanism, which is provided with a fixed bracket fixed on the needle bar box of an embroidering machine and a movable bracket movably connected with the fixed bracket and driven by an actuator to lift; a feeding mechanism, which is provided with a bearing base connected with the movable bracket, a stepping motor arranged on the bearing base, a feeding drive mechanism driven by the stepping motor, a feeding guide mechanism and a cutting mechanism. The feeding mechanism arranged in the oblique front of the needle bar box can lift between a standby position and a work position; when the feeding mechanism lifts to the work position, the feeding guide mechanism points to the decorative plate stitching position from the oblique front of the needle bar box. The present invention overcomes the shortcomings of the prior horizontal or front devices, thus not hindering the threading operation of the embroidering machine and not occupying the lateral space of the head, which is suitable for the embroidering machine with small head distance. In addition, the feeding device is also provided with a regulation fastening mechanism and a photoelectric automatic aligning device.

Description

technical field [0001] The invention relates to an oblique decorative sheet supply device, which sets the feeding mechanism to move up and down in front of the head of the embroidery machine, and transports the decorative sheet to the sewing position along the oblique direction during operation, without hindering the embroidery machine. The threading operation does not occupy the lateral space of the machine head, and it is suitable for small head pitch embroidery machines. Background technique [0002] Embroidering various decorative pieces on clothing, shoes, hats, bags, accessories and other items can enhance the decorative effect of the item, make it more attractive to consumers, and increase sales and product value. Usually, the decorative sheet is a kind of metal sheet or coated plastic sheet with perforation in the center, bright surface or decorative color. The decorative sheets are connected in series into strips, which are cut by a cutter and sewn by hand or machin...

AI Technical Summary

Problems solved by technology

The two devices have their own advantages and limitations: the advantage of the side-mounted device is that it will not hinder operations such as needle threading, but the disadvantage is that the device is located in the lateral distance between the two machine heads, which requires a large space It is used on embroidery machines with small head spacing; the advantage of the front-mounted device is that it does not occupy the lateral space of the machine head, so it can be applied to embroidery machines with small head spacing. The disadvantage is that it will hinder the needle threading and other operations

[0009] The sliding connection between the fixed bracket and the movable bracket of the lifting mechanism requires that each part of the mechanism must have high processing and installation accuracy, otherwise it will cause the mechanism to move up and down smoothly, resulting in difficulty in the manufacture and installation of the mechanism components. costs increase accordingly

Moreover, the movable support of the lifting mechanism is easy to swing and jump with the vibration of the high-speed embroidery of the machine, and the stability is not high, which leads to deviations in the feeding of decorative pieces and affects the quality of embroidery

[0010] After the relative position of the transmission mechanism and the machine needle is adjusted, it is directly locked and fixed to the lifting mechanism by screws. After a period of use or under the vibration of the machine's high-speed embroidery, it is easy to loosen and shift, resulting in deviations in the feeding of the decorative sheet. , affecting the quality of inlay embroidery, and the transmission mechanism cannot be moved and adjusted as needed after it is locked and fixed

[0011] The movable knife shaft is directly supported by the shaft sleeve and adopts friction transmission. All parts must have high processing and installation accuracy, and are easy to wear, and the flexibility of the movable knife shaft rotation is not high; the movable knife is set on the movable knife shaft and the supporting seat. The torsion spring between them is kept in the open position, which is difficult to install, and the torsion spring is always under stress, which is prone to failure

[0012] The movable knife is easy to scrape off the embroidery thread when it swings, and the blade of the movable knife is relatively thick, so it can only be used to cut off decorative pieces with a larger diameter (such as more than 3mm), which limits its application range

[0013] When the stepper motor is powered off, the driving wheel is prone to angular displacement due to vibration, mis-touch, etc., so that the decorative sheet strip deviates from the correct feeding position. If this state is not corrected in time, the feeding mechanism will be restarted. The decorative sheet cannot be accurately conveyed to the sewing position after work

Therefore, whenever the stepper motor is powered off and then powered on again, the operator must check to determine whether the decorative sheet strip deviates from the correct feeding position before starting the sewing operation, which is time-consuming and labor-intensive, reduces work efficiency, and brings great the inconvenience

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