JPS5939543B2 - 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 a conventional embroidery machine, 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 that are orthogonal to each other. For the multi-headed embroidery needle unit that is fixedly provided above, the base plate is connected to a pattern output mechanism reading device (for example, a computer memory).
The embroidery is displaced in both the X and Y axes directions by a signal from the embroidery frame, and a predetermined embroidery is performed on the fabric stretched on the frame. It was necessary to remove the old fabric and stretch new fabric onto the frame, and some fabrics used continuous strips of fabric without cutting them to a certain size; Since a part of the strip of fabric is fixed to the frame, after the embroidery is finished, the next unembroidered area of the strip of fabric must be set on the frame, so in any case. It was inefficient.

In view of the fact that the fabric is slanted, this invention rotates each pair of rolls on which a strip of fabric is tied up 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 a belt-shaped fabric transfer roll, and a medium-heat embroidery area of the belt-shaped fabric can be easily set and prepared between each pair of rolls. Its purpose is to provide a support for embroidered fabric.

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. In a multi-head embroidery machine that embroiders a pattern by displacing the strip-shaped embroidery fabric B in the forward and reverse directions in the directions of two mutually orthogonal x, y, axes in accordance with a signal from a pattern-setting mechanism reader (not shown). , A pair of driving rolls 1 for stretching the strip-shaped embroidery fabric B 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 pillars 2 and 3 installed 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, 1 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 an elastic layer 10 in the circumferential direction into which the tips of the needles 9 can penetrate. 6 from the unwinding side, 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, passing under the main drive roll 1, and passing under the other main roll 1. It passes through the contact area between the main drive roll 1 and the driven roll 8 and is wrapped around the top of the drive 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, which is fitted in the interior so as to be able to rise and fall and is supported by a collar 13 on the top of the main pillar 2 so as not to fall, is a threaded part 15, and a female threaded piece 16 is connected to the threaded part 15. It is preferable that a coil spring IT be fitted between the threaded piece 16 and the bearing body 11.

In addition, to give an example of a mechanism for displacing the base E in the X-axis direction, a pulse motor 18' is rotated in forward and reverse directions by a signal in the X-axis direction from a handle mechanism reader, and the pulse motor 18' is rotated in the forward and reverse directions. A drive shaft 19 is supported on the machine base C below the base plate E, a pair of pulleys 20, 20 are fixed, and a pulley 20, 20 cooperates with the pulleys 20, 20 to suspend the endless belt 21. car 2
The shafts 22' of 2 and 22 are similarly supported on the machine base C below the base plate E, and the upper part of the endless belt 21 is mounted on the base plate E.
It is fixed to the bottom surface of.

When the thickness of the fabric B to be embroidered is thick, the above-mentioned radial needles 9 are also provided on the driven rolls 8, 8 side, and an elastic layer 10 into which the tip of the needle penetrates 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 a diagonally upward configuration, when the multi-headed embroidery needle section A is operated and the pattern generation mechanism reading device is activated, the read 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, 1.
, the main shaft rolls 1, 1 are rotated in either the forward or reverse direction by the amount determined by the signal, so that the strip-shaped embroidered fabric B held between the main drive 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 fixed to the surface of each roll without slipping by the needle 9 and the elastic layer provided on one or both of the driving roll 1 and the driven roll 8, so that the pattern is accurately embroidered.

When the embroidery on the first section side is completed, 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 a slanting structure, when the - section embroidery is completed, the embroidery pattern is expressed by the displacement in the x) and y-axis directions.For example, the displacement in the y-axis direction is taken care of. Since each pair of rolls can be switched to transfer the strip-shaped fabric, the entire strip-shaped fabric can be embroidered continuously in an extremely efficient manner, and each pair of rolls has a needle and an elastic layer to transfer the fabric. Since a fixing means is provided and the driven roll is brought into pressure contact with the driving roll, it has particularly remarkable effects such as accurate embroidery regardless of the thickness of the fabric.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the essential parts of an embodiment of the embroidery material support of the multi-head embroidery machine according to the present invention, Fig. 2 is a side view of the shaft bearing of the driven roll, and 8 shows the multi-head embroidery needle. Part, B is the fabric to be embroidered, C is the machine stand, E is the base plate, IU active roll, 6.7
18 is a pulse motor, 18 is a driven roll, 9 is a needle, 10 is an elastic layer, 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 part A is displaced in both forward and reverse directions in the directions of the x and y axes, which are orthogonal to each other, in response to a signal from the pattern generation mechanism reader to create a pattern. In this multi-head embroidery machine, a pair of active 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 the 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 γ, 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. An elastic layer 10 is provided in the circumferential direction, and the embroidered fabric B is a strip-shaped material, and the part where the driven roll 8 and the driving roll 1 are in contact is viewed from above one of the driven rolls 8 from the unwinding side. through the main drive roll 1, pass under the main drive roll 1, and pass through the other drive roll 1.
The embroidery fabric support stand after multi-head embroidery is characterized in that the embroidery fabric support stand passes through the part where the driving roll 1 and the driven roll 8 are in contact with each other from the lower side and is hung from the upper part of the driven roll 8 to the winding side.