JPS5943577B2 - Embroidery fabric support stand for multi-head embroidery machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an embroidered material support for a multi-head embroidery machine.

In conventional embroidery machines, a frame body in which the fabric to be embroidered is cut to a certain size and stretched is fixed on a base plate that can be displaced in both X and Y axes directions orthogonal to each other. With respect to the multi-headed embroidery needle unit fixedly provided above, the base plate is displaced in both x and y axes directions by a signal from a pattern generation mechanism reading device (for example, a computer memory), and the frame body is Since the predetermined embroidery is performed on the fabric stretched over the frame, each time the embroidery is finished, the embroidered fabric is removed from the frame and new fabric is stretched over the frame. There were also some that used a continuous strip of fabric without cutting it to a certain size, but this type of fabric also had a part of the strip of fabric fixed to the frame, so After the embroidery is finished, the next unembroidered area of the strip of fabric must be set on the frame, which is inefficient in any case.

In view of the above facts, this invention rotates each pair of rolls on which a strip of fabric is tied in both forward and reverse directions based on a signal from a patterning mechanism reader, and is responsible for displacement in the y-axis direction. After the embroidery is completed, each pair of rolls acts as belt-shaped fabric transfer rolls, and the embroidery area of the belt-shaped fabric can be easily set and prepared between each pair of rolls. Its purpose is to provide an embroidery fabric support.

The structure of the embroidery fabric support stand of the multi-head embroidery machine according to this invention will be explained based on an embodiment shown in FIG. 1. A multi-head type embroidery line in which a pattern is embroidered by displacing the strip-shaped embroidery fabric B in two directions, x and y, which are perpendicular to each other, in the forward and reverse directions based on a signal from a pattern-setting mechanism reader (not shown). In the machine, a pair of active rolls for stretching the band-shaped embroidery fabric B is placed on a base plate E, which has a dovetail and dovetail structure and can be displaced in the X-axis direction by a sliding mechanism, on a machine base C. 1 and 1 are erected at the four corners of the base plate E.
, 4 and 5 are rotatably supported in the X-axis direction and horizontally, and the main shaft rolls 1 and 1 can be rotated in both forward and reverse directions in response to a signal in the Y-axis direction from the handle mechanism reader. Driven by pulse motors 6 and 7 that are synchronized with Needles 9 are provided at intervals n in the generatrix direction and protrude radially in the circumferential direction, and the driven roll 8 is provided with a groove 10 in the circumferential direction into which the tips of the needles 9 fit. From the unwinding side, the material is passed from above one of the driven rolls 8 through the part where the driven roll 8 and the main drive roll 1 are in contact, passes under the main drive roll 1, and then from the bottom of the other main roll 1. Drive roll 1
It passes through the part where the roller 8 is in contact with the driven roll 8 and is wrapped around the upper part of the driven roll 8 on the winding side.

Note that in order to bring the driven roll 8 into pressure contact with the main roll 1, as shown in FIG.
The bearing body 11 of
The lower part of the adjustment rod 14 is fitted into the interior of the main column 2 so as to be able to rise and fall and is supported by a collar 13 so as not to fall down. It is preferable that a coil spring 17 be fitted between the threaded piece 16 and the bearing body 11.

In addition, to show an example of a mechanism for displacing the base E in the X-axis direction, the pulse motor 18 is rotated forward and backward in response to a signal in the X-axis direction from the handle mechanism reader, and a The drive shaft 19 is supported on the machine base C below the base plate E, a pair of pulleys 20, 20 are fixed, and the pulley 2
Pulley 22 that suspends the endless belt 21 in cooperation with 0.20
.

When the thickness of the fabric B to be embroidered is thick, the above-mentioned radial needle 9 is also provided on the driven rolls 8, 8 side, and the groove 10 into which the tip of the needle fits is provided on the driving rolls 1, 1 side. It's good to do that.

In addition, 23 in Fig. 1 indicates a long hole provided in the machine base C.
The upper parts of the pulleys 20 and 22 that are mounted on the lower surface are fitted into the elongated holes 23, so that the tension side of the belt 21 that is wrapped around the pulleys 20 and 22 can be fixed to the lower surface of the base plate E. It is for.

Since this embodiment has the above-mentioned configuration, when the multi-headed embroidery needle section A is operated and the pattern generation mechanism reading device is activated, the reading signal in the X-axis direction is sent to the pulse motor 18, and the pulley 20, 20 rotate in forward and reverse directions, and move the base plate E forward and backward in the X-axis direction via a belt 21 as determined by the signal, while reading signals in the y-axis direction are read by a pair of pulse motors 6, 7.
The driving rolls 1, 1 are rotated in either the forward or reverse direction by the amount determined by the signal, so that the belt-shaped embroidered fabric B held between the driving roll 1 and the driven roll 8 is rotated according to the signal. The sewing machine advances and retreats in the y-axis direction by a predetermined amount, and embroiders a predetermined pattern on the fabric E.

During this time, the fabric B is embroidered accurately by the needles 9 and grooves 10 provided on one or both of the driving roll 1 and the driven roll 8 to prevent it from slipping (as it is fixed on the surface of each roll).

When the embroidery on the first section side is completed, use the pulse motors 6 and 7.
When a fabric transfer signal is sent to , the embroidered part is sent to the winding side and the next unembroidered fabric is positioned under the embroidery needle part A from the winding side, so that the embroidery work can be started again.

Since this invention has the above-mentioned structural action, - When the section embroidery is completed, the embroidery pattern is expressed by displacement in the x and y axis directions.One displacement, for example, the displacement in the y axis direction, is taken care of. Since each pair of rolls can be switched to transport the belt-shaped fabric, the entire belt-shaped fabric can be embroidered continuously in an extremely efficient manner, and each pair of rolls has a needle and groove for fixing the fabric. Since a means is provided and the driven roll is pressed against the driving roll, it has a particularly remarkable effect such as accurate embroidery regardless of the thickness of the fabric.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of essential parts of an embodiment of the embroidery material support of a multi-head embroidery machine according to the present invention, FIG. 2 is a side view of the shaft bearing of the driven roll, and A is a multi-head embroidery needle. , B is the fabric to be embroidered, C is the machine stand, E is the base plate, 1 is the driving roll, 6, 7
is a pulse motor, 18 is a driven roll, 9 is a needle, and m and n are intervals, respectively.

Claims (1)

[Claims] 1 The strip-shaped embroidery material B provided below the fixed multi-headed embroidery needle A is displaced in both forward and reverse directions in the directions of two mutually orthogonal x and y axes according to the signal from the pattern generation mechanism reader to create a pattern. In this multi-head embroidery machine, a pair of drive rolls 1, 1 for stretching strip-shaped embroidery fabric are placed on a base plate E that can be moved in the X-axis direction on a machine base C, with an interval of m.
The spindles 1, 1 are mounted horizontally in the X-axis direction, and the main rolls 1, 1 are driven by pulse motors that rotate in both forward and reverse directions in synchronization with each other in response to signals from the handle mechanism reader. 6 and 7, respectively, and the driving roll 1
A driven roll 8 is mounted in pressure contact with the shaft, and at least the driving roll 1 is provided with needles 9 that project radially in the circumferential direction at intervals n in the generatrix direction, and the driven roll 8 is provided with needles 9 that protrude radially in the circumferential direction. A groove 10 into which is fitted is provided in the circumferential direction, and the strip-shaped fabric B to be embroidered is inserted from above one of the driven rolls 8 from the unwinding side.
Pass through the area where the driven roll 8 and the driven roll 1 are in contact, pass under the driving roll 1, pass through the area where the driven roll 1 and the driven roll 8 are in contact from the underside of the other driving roll 1, and pass through the area where the driven roll 1 and the driven roll 8 are in contact with each other. An embroidery fabric support stand for a multi-head embroidery machine, characterized in that it is suspended from the upper part of a driven roll 8 to the take-up side.