JP2012521788A - Yarn supply device for thread winding embroidery machine - Google Patents

Abstract

A yarn feeding device for a thread winding embroidery device is provided.
An embroidery thread feeding mechanism (1), a driving mechanism (2) for driving the embroidery thread feeding mechanism, an embroidery thread tension adjusting mechanism (3), and an embroidery thread feeding mechanism. It has a feed / return monitor mechanism (4) and an embroidery thread return / feed mechanism (5). The tension adjusting mechanism (3) for the embroidery thread has a swinging bar member (31) whose one end is rotatably connected to a pin shaft (30) provided at the motor installation location. A restoring spring (32) is disposed in the vicinity of the pin shaft (30) of the rod-like member (31), and the other end of the restoring spring (32) is fixed to the motor installation location. The embroidery thread return / feed monitor mechanism (4) includes a photocoupler device (41) for returning the embroidery thread, a photocoupler device (42) for feeding the embroidery thread, and a disk provided at one end of the pin shaft (30). The encoder (40). A light transmissive gap region is disposed along the radial direction of the disk-shaped encoder (40). The photocoupler device (41) for returning the embroidery thread and the photocoupler device (42) for feeding the embroidery thread are arranged in the motor installation part, and each correspond to the gap region of the disk-shaped encoder (40), and Connected to the computer control system. The embroidery thread return / feed mechanism (5) includes an embroidery thread return / feed motor (50), an embroidery thread conveyance drive wheel (51) disposed at the end of the output shaft of the motor (50), and a drive. It has a driven wheel (52) for conveying the embroidery thread arranged on the side surface of the wheel (51). Due to the cooperation of the embroidery thread tension adjustment mechanism (3), the embroidery thread return / feed monitoring mechanism (4), and the embroidery thread feed / return mechanism (5), the yarn supplying device can move the upper thread during the embroidery process. The pulling phenomenon can be avoided, and the embroidery thread can be pulled back in time during the complementary embroidery process, so that the quality of the embroidery product can be guaranteed.

Description

1. TECHNICAL FIELD OF THE INVENTION The present invention relates to a computer-controlled embroidery machine, and more specifically to a supply device for a thread-wound embroidery machine that realizes the conveyance of embroidery thread.

  The present invention relates to a Chinese utility model registration application filed on March 27, 2009 with an application number 200001165562, a Chinese utility model registration application filed on April 14, 2009 with an application number 200001182210.5, and a 2009 application with an application number 2000090097745.3. This is based on three Chinese applications for Chinese utility model registration dated April 14, 2014. The contents of these three applications are appropriately referred to in the present invention.

2. BACKGROUND OF THE INVENTION A computer-controlled thread winding embroidery machine, that is, an apparatus used for performing embroidery with a thread, is provided with an embroidery thread conveying apparatus for thread winding embroidery by a thread winding embroidery function based on a conventional flat embroidery machine. ing.

  A yarn feeder for a conventional thread winding embroidery machine including an independent machine head includes an embroidery mechanism and an embroidery thread conveying mechanism that are independent of each other. The apparatus is installed at a fixed interval from a flat machine head of a composite embroidery machine combined with a flat embroidery machine body. Therefore, this apparatus requires a large installation space.

  On the other hand, the apparatus needs to use a transmission system common to the flat embroidery machine body. For the installation of the transmission shaft, the head structure of the conventional flat embroidery machine needs to be reproduced in large part, but this reduces the generality of the parts, and the computer control with a flat embroidery mechanism. It is impossible to add a thread embroidery function to an embroidery machine.

  A utility model application with an application number of 200001145271 called “yarn embroidery device” was filed on February 25, 2009 by Zhejiang Crown Army Electric Technology Co., Ltd., which is intended to realize the thread embroidery function. Indicates that it is necessary to install a yarn feeding device on one side of the flat embroidery device. The apparatus mainly includes an embroidery thread conveying mechanism, a drive mechanism having a stepping motor, and a guide mechanism for guiding an embroidery thread to be guided, and the embroidery thread conveying mechanism includes embroidery thread conveying wheels.

  The embroidery thread conveying wheel has a main body having a needle hole for embroidery thread in the center, and a plurality of embroidery thread conveying holes are provided around the main body. A plurality of embroidery thread matching holes that match the embroidery thread transport holes are arranged around the body, and the body is provided with synchronization means having advantages such as high-speed and high-precision transport and simple operation. .

  In this device, the guide mechanism that is difficult to recognize for guiding the embroidery thread to be guided only adjusts the tension of the embroidery thread, so if the tension of the embroidery thread is too strong, If the surplus embroidery thread cannot be pulled in, the completion of the complementary embroidery process will be hindered.

  In order to cope with the above technical problems, an object of the present invention is to provide a yarn feeding device for thread embroidery characterized by automatic adjustment of embroidery thread, simple operation, and preferable functions and effects.

  In order to address the above technical problems, the present invention provides an embroidery thread conveying mechanism, a drive mechanism for operating the embroidery thread conveying mechanism, an embroidery thread tension adjusting mechanism, an embroidery thread return / feed monitor mechanism, A technical solution called a return / feed mechanism is employed. Here, the tension adjusting mechanism of the embroidery thread is a swinging rod-like member having one end rotatably connected to the pin shaft of the motor installation portion and a guide wheel provided at the other end, and the vicinity of the pin shaft It has a restoring spring.

  The other end of the restoring spring is fixed to the motor installation portion, and the embroidery thread return / feed monitor mechanism includes an embroidery thread return photocoupler, an embroidery thread feed photocoupler, and a pin shaft It has a disk-shaped encoder arranged at one end.

  The optical gap region arranged along the radial direction of the disk-shaped encoder corresponds to each of the return photocoupler device and the feed photocoupler device arranged in the motor installation portion. Connected to computer control system. The embroidery thread return / feed mechanism is disposed on one side of a return / feed motor, an embroidery thread conveyance drive wheel disposed at one end of an output shaft of the return / feed motor, and an embroidery thread conveyance drive wheel. It has a driven wheel for conveying the embroidery thread.

  The combination of the embroidery thread tension adjustment mechanism, the embroidery thread return / feed monitor mechanism, and the embroidery thread return / feed mechanism employed in the present invention is a computer in which the optical coupling component of the tension adjustment mechanism is in accordance with the degree of tension. By transmitting information so that it can be automatically recognized, the tension of the embroidery thread can be transmitted to the embroidery thread return / feed monitor mechanism.

  The computer program controls the return / feed mechanism for drawing or sending out the embroidery thread, which can prevent the embroidery thread from being broken like noodles during the embroidery process. The computer program then immediately pulls the embroidery thread in a complementary embroidery process to ensure the quality of the embroidery product.

  Further, the yarn feeding device for thread embroidery according to the present invention has an embroidery thread clamping mechanism arranged on the embroidery thread discharge side, and this clamping mechanism is composed of a tightening screw, and on the front side of the tightening screw. Is provided with a fixed position stop nut, a sheet-like fastener, a spring, and an adjustment nut in this order. The clamp mechanism for the embroidery thread is arranged so as to prevent erroneous pull-in of the embroidery thread in the fixed initial state, thereby making the operation of the clamp mechanism easier.

  Furthermore, a tension spring is provided at one end of the guide type slider disposed at two positions on the side surface of the driven wheel for conveying the embroidery thread, and an adjustment bolt is disposed at the other end of the tension spring. The adjusting bolt is used for adjusting the friction between the embroidery thread and both the driving wheel and the driven wheel for conveying the embroidery thread, and this is effective for pulling and feeding.

  Furthermore, the yarn feeding device for spool embroidery according to the present invention has a bobbin fixing mechanism disposed above the embroidery thread return / feed mechanism. The bobbin fixing mechanism includes a bobbin fixing pin shaft located at the center of the bobbin, and a bobbin fixing pin and a detachment prevention pin are provided on the front side of the bobbin fixing pin shaft. The bobbin stopper pin is provided with a notch for fixing the disengagement prevention pin inside. When it is necessary to replace the bobbin, the bobbin stopper pin is pulled to be in a horizontal state, and the bobbin can be easily removed from the bobbin fixing pin shaft. Further, a retaining ring in which a tension spring is disposed is provided on the back side of the bobbin fixing pin shaft. Thereby, the stability of the conveyance of the embroidery thread can be improved while suitably fixing the bobbin.

It is a figure which shows the structure of the yarn feeding apparatus for the thread winding embroidery by this invention. FIG. 3 is an enlarged view of the embroidery thread tension adjusting mechanism shown in FIG. 1 as viewed in the B direction. FIG. 2 is an enlarged view of the embroidery thread return / feed monitor mechanism shown in FIG. 1 as viewed in the C direction (the drive mechanism is disassembled); It is AA sectional drawing of the return / feeding mechanism of the embroidery thread | yarn shown by FIG. It is an enlarged view which shows the structure of the bobbin fixing mechanism shown by FIG. It is an enlarged view which shows the structure of the clamp mechanism shown by FIG.

  The invention is described in detail below in conjunction with the drawings and embodiments.

  As shown in FIG. 1, the present invention includes an embroidery thread conveyance mechanism 1, a drive mechanism 2, an embroidery thread tension adjustment mechanism 3, an embroidery thread return / feed monitor mechanism 4, an embroidery thread return / feed mechanism 5, and a return. A fixed bobbin mechanism 6 disposed above the feed mechanism 5 and an embroidery thread clamping mechanism 7 disposed on the embroidery thread discharge side.

  As shown in FIG. 2, the embroidery thread tension adjusting mechanism 3 has a swinging rod-shaped member 31 whose one end is rotatably connected to the pin shaft 30, and in the vicinity of the pin shaft 30. Is provided with a restoring spring 32. Here, the restoring spring 32 is fixed to the motor installation portion 32 at the other end, and a guide wheel 34 is provided at the other end of the rod-shaped member 31.

  As shown in FIG. 3, the embroidery thread return / feed monitor mechanism 4 includes a disk-shaped encoder 40 disposed at one end of the pin shaft 30, and a embroidery thread return photo disposed on the outer periphery of the encoder 40. It has a coupler device 41 and a photocoupler device for feeding an embroidery thread, and the disk-like encoder 40 is provided with an optical gap region (not shown) arranged along the radial direction.

  The photocoupler device 41 for returning the embroidery thread and the photocoupler device 42 for feeding the embroidery thread each correspond to a gap area on the disk-shaped encoder 40 and are connected to a computer control system. Since the disk-shaped encoder 40 and the bar-shaped member 31 are coaxially arranged, the disk-shaped encoder 40 rotates in the opposite direction as the bar-shaped member 31 rotates, whereby the tension of the embroidery thread is transmitted to the disk-shaped encoder 40. Will be. When the tension of the embroidery thread is too large or too small, the gap region of the disk-shaped encoder 40 is moved away from the return photocoupler device 41 or the feed photocoupler device 42. In response, the disk-like encoder 40 transmits a signal corresponding to the drawing or sending to the computer control system.

  As shown in FIG. 4, the embroidery thread return / feed mechanism 5 has a return / feed motor 50, and at one end of the output shaft of the return / feed motor 50, a drive wheel 51 for embroidery thread conveyance is provided. Is arranged. The driven wheel 52 for conveying the embroidery thread disposed at one end of the driving wheel 51 for conveying the embroidery thread can rotate about the central axis 53 in the opposite direction to the driving wheel 51. The driving wheel 51 and the driven wheel 52 for conveying the embroidery thread may be rubber wheels so that the embroidery thread can penetrate the center thereof.

  A tension spring 55 is provided on one side of the guide type slide member 54 disposed at two positions on the side surface of the driven wheel 52 for conveying the embroidery thread, and an adjustment bolt 56 is provided at the other end of the tension spring 55. Is arranged. Therefore, it is possible to adjust the friction between the embroidery thread and both the drive wheel 51 and the drive wheel 52 for conveying the embroidery thread, which is effective for drawing and sending out the embroidery thread. The return / feed motor 50 rotates clockwise or counterclockwise in order to realize the pull-in or feed-out function after receiving the pull-in or feed-out signal.

  As shown in FIG. 5, the bobbin fixing mechanism 6 includes a bobbin fixing pin shaft 60 positioned at the center of the bobbin 61, and a bobbin fixing pin 62 and a detachment prevention pin 63 are provided on the front surface of the bobbin fixing pin shaft 60. . The bobbin stopper pin 62 is provided with a notch 64 for fixing the disengagement prevention pin 63 therein. When the bobbin 61 needs to be replaced, the bobbin stopper pin 62 is pulled to be in a horizontal state. Since the width of the bobbin fixing pin 62 is narrower than the center hole of the bobbin 61, it is easy to remove the bobbin 61 from the bobbin fixing pin shaft 60. On the other hand, on the back side of the bobbin fixing pin shaft 60, a retaining ring 65 having a tension spring 66 disposed therein is provided. Thereby, the stability of embroidery thread conveyance can be improved while the bobbin is suitably fixed.

  As shown in FIG. 6, the embroidery thread clamping mechanism 7 includes a clamp screw 70, and a nut 71 for stopping at a fixed position, a sheet-like fastener 72, a spring 73, and an adjustment nut are provided on the front side of the clamp screw 70. 74 are provided in order. When the end of the embroidery thread is fixed to the center of the fastener 72, the embroidery thread between the sheet-like fastener 72 and the return / feed mechanism 5 is tightened. Since the return / feed monitor mechanism 4 of the embroidery thread monitors the return / feed of the embroidery thread, it is possible to prevent the erroneous pull-in operation by the embroidery thread return / feed mechanism 5.

Claims (5)

A yarn feeding device for wound embroidery having an embroidery thread transport mechanism and a drive mechanism for operating the embroidery thread transport mechanism,
One end is pivotally connected to the pin shaft of the motor installation section and the other end is provided with a guide wheel. The other end is close to the pin shaft and the other end is fixed to the motor installation section. A tension adjusting mechanism for the embroidery thread having a restoring spring
The photocoupler device for returning the embroidery thread, the photocoupler device for feeding the embroidery thread, and a disk-shaped encoder disposed at one end of the pin shaft, are disposed along the radial direction of the disk-shaped encoder. The optical gap region corresponds to each of the embroidery thread return photocoupler device and the feed photocoupler device arranged in the motor installation section, and returns the embroidery thread connected to the computer control system. / Feed monitor mechanism, return / feed motor, embroidery thread conveying drive wheel disposed at one end of the return / feed motor output shaft, and embroidery thread disposed on one side of the embroidery thread conveying drive wheel An embroidery thread return / feed mechanism having a driven wheel for conveyance. An embroidery thread clamping mechanism disposed on the output side of the embroidery thread;
The clamp mechanism for an embroidery thread includes a tightening screw, and a fixed position stop nut, a sheet-like fastener, a screw, and an adjustment nut are sequentially provided on the front side of the tightening screw. A yarn feeding device for thread winding embroidery described in 1.   A tension spring is provided at one end of the guide type slide member disposed at two positions on the side surface of the driven wheel for conveying the embroidery thread, and an adjustment bolt is disposed at the other end of the tension spring. The yarn feeding device for bobbin embroidery according to claim 1. A bobbin fixing mechanism disposed above the embroidery thread return / feed mechanism;
The bobbin fixing mechanism includes a bobbin fixing pin shaft located at the center of the bobbin, and a bobbin fixing pin and a detachment prevention pin are provided on the front surface side of the bobbin on the bobbin fixing pin shaft. The thread feeding device for bobbin embroidery according to claim 1, further comprising a notch for fixing an anti-disengagement pin inside.   2. The yarn feeding device for bobbin embroidery according to claim 1, wherein a retaining ring having a tension spring disposed therein is provided on the back side of the pin shaft for fixing the bobbin.

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