KR200323280Y1 - Apparatus of cribrellum for embroidering machine and sewing machine - Google Patents

Abstract

The present invention relates to a hook holder of an embroidery machine and a sewing machine, and the hook holder rotates at a predetermined angle when the kiln rotates, so that an interference phenomenon does not occur between the thread and the hook holder when the thread exits the kiln. This prevents the thread from breaking or loosening.

Kiln of the embroidery machine and sewing machine of the present invention for this purpose, the drive shaft rotated by the main shaft motor; A cam coupled to the drive shaft and having a curved groove; A drive gear coupled to the drive shaft; A driven gear coupled to the drive gear and rotating the kiln shaft by rotation of the drive gear; A kiln composed of an outer kiln and an inner kiln, coupled to the kiln shaft and rotating; A cauldron installed in the bending groove of the cam and protruding to form a moving member moving along the bending groove when the cam is rotated on one side and protruding an inner hook portion for fixing the inner hook on the other side; And a hinge screw for fixing the hook holder so that the inner hook holder moves at an angle according to the movement of the movable member.

Description

Hook of embroidery machine and sewing machine {APPARATUS OF CRIBRELLUM FOR EMBROIDERING MACHINE AND SEWING MACHINE}

The present invention relates to the hooking of the embroidery machine and the sewing machine, and more particularly, to the embroidery machine and the sewing machine which prevents the thread from being broken or loosened by removing the interference phenomenon generated between the thread and the inner hook part when the thread exits the kiln. It's about kilns.

In general, the embroidery machine is a machine that the user sets the desired number of the frame while fixing the fabric moves in the X-axis and Y-axis direction while the needle bar to sew up and down movement.

In general, sewing machines mainly used in homes are structured to sew and feed fabrics using a serrated feeder, while embroidery machines are configured to embroider while the frame fixing the fabric is transferred in the X and Y directions.

Since the embroidery machine is to be embroidered while the embroidery frame fixing the fabric is transported in the X-axis and Y-axis directions, the accuracy and constantness of the embroidery frame movement is closely related to the quality of the embroidery.

Therefore, a server motor or an induction motor that can control the speed is used as a power source for driving the up and down movements of the needle bar of the embroidery machine, and a positioning force is good as a power source for moving the embroidery frame in the X and Y axis directions. Easy-to-use stepping motors are usually used.

The embroidery machine includes a head-type automatic embroidery machine with one head, a multi-head automatic embroidery machine with two or more heads, and a special embroidery machine such as a computer quilting machine.

Then, the configuration and operation of the embroidery machine according to the prior art with reference to the accompanying drawings will be described.

1 is an overall external view of a conventional general multi-head type automatic embroidery machine, Figure 2 is a block diagram showing the head and the kiln drive of the conventional embroidery machine.

1 and 2, the multi-head type automatic embroidery machine includes a support 1 for supporting the embroidery machine, a table 2 installed on the support 1, and an embroidery on the table 2. Embroidery frame (3) for fixing the cloth to be placed, a plurality of heads (4) installed on the upper shaft (11) of the upper portion of the embroidery frame (3) and embroidery work, and the lower shaft (12) below the table (2) A kiln (or hook, also referred to as a hook) 20 which is installed and is positioned opposite to the head 4 and supplies a lower thread, a control box 5 provided below the table 2, and the table It is comprised including the operation panel 6 provided in the one side edge part of (2). The main shaft motor 13 is installed at one lower end of the table 2. A first shaft 14a is connected between the rotary shaft of the main shaft motor 13 and the lower shaft 12, and a second belt 14b is connected between the lower shaft 12 and the upper shaft 11. It is.

Accordingly, the lower shaft 12 and the upper shaft 11 are rotated by the rotation of the main shaft motor 13, and the kiln 20 is driven by the rotation of the lower shaft 12 to lower the thread for embroidery. The needle bar 4a installed in the head 4 is driven by the rotation of the upper shaft 11 to embroider the cloth.

The embroidery machine is usually provided with a plurality of heads 4 (for example, 10 to 24) to increase productivity. In addition, the plurality of heads 4 are connected by one rotation shaft (upper shaft), and each head 4 has a plurality of needles (for example, about six to fifteen), and each needle is different. Colored threads are connected. Thus, the head 4 is embroidered according to the embroidery design using a thread of several colors.

Figure 3 is a plan view showing the hook of the embroidery machine and sewing machine according to the prior art.

As shown in Figures 2 and 3, the conventional thread trimming device of the embroidery machine and sewing machine is a lower shaft 12 that is rotated by the rotary shaft of the main shaft motor 13, and a kiln base coupled to the lower shaft 12 ( 30). The inside of the kiln base 30 is a drive gear 41 of the helical gear coupled to the lower shaft 12 and the drive gear 41 is gear-coupled by the rotation of the drive gear 41 and the kiln shaft A driven gear 42 for rotating 43 and a kiln 20 coupled to the kiln shaft 43 and composed of an outer and inner kilns, and one side of the kiln base 30 is fixed and installed. The inner hook portion 21a for fixing the hook portion 21a is configured to include a hook portion 21 protruding from the other side. At this time, in the kiln 20, a first cutter 20a having a blade formed at the tip end of the kiln 20, and a second cutter 20b having a blade formed at the tip of the cutter 20a, staggered with the first cutter 20a. And a trimming shaft (not shown) which is coupled to a rear end of the second cutter 20b and forms a central axis so that the second cutter 20b rotates.

The kiln of the conventional embroidery machine and the sewing machine according to the above configuration is the kiln by the stop position of the kiln stopped by the inner hook portion 21a and the outer kiln rotated by the kiln shaft 43. 20) is rotated. As a result, the bobbin thread (not shown) in the kiln 20 was unwound and supplied, whereby embroidery was possible.

However, since the hook of the conventional embroidery machine and the sewing machine is in the state in which the hook is stopped by the hook holder 21a when the outer hook is rotated, the thread and the hook are being pulled out of the hook. An interference phenomenon occurs between the catches 21a. Due to this interference phenomenon, the yarn is often broken or unwound and the yarn is caught and twisted by the inner hook portion 21a. In addition, even if the thread is not broken, there is a problem that the strength of the thread is weakened by the interference between the thread and the fastening portion 21a. These problems have caused a decrease in embroidery quality.

In addition, in the case of a conventional multi-head type automatic embroidery machine having a plurality of heads 4, if any thread is broken during the embroidery work, the operation of the entire head is stopped. Therefore, the worker has to find the broken thread and insert the needle again to work, so when one thread is broken, the working time becomes longer and the working efficiency decreases.

Therefore, the object of the present invention was devised to solve the above problems, so that when the kiln rotates, the inner and outer hooks have a certain angle, so that the thread is separated from the kiln when the thread exits from the kiln. It is to provide a hook of the embroidery machine and sewing machine to prevent the interference phenomenon.

1 is a general external view of a conventional general multi-head type automatic embroidery machine

2 is a block diagram showing a head and a kiln driving unit of the conventional embroidery machine

Figure 3 is a plan view showing a thread trimming device of the embroidery machine and the sewing machine according to the prior art

Figure 4 is a plan view showing a trimming device of the embroidery machine and sewing machine according to the present invention

<Explanation of symbols for the main parts of the drawings>

112: lower shaft (drive shaft) 120: kiln (hook)

120a: first cutter 120b: second cutter

121: hookman 121a: hookman

121b: moving member 121c: body portion

121d: Wings 122: Hinge Screws

130: kiln base 141: drive gear

142: driven gear 143: kiln shaft

150: cam 151: bend

151a: bend groove 151b: cover

Kiln of the embroidery machine and sewing machine according to the present invention for achieving the above object,

A drive shaft rotated by the main shaft motor;

A cam coupled to the drive shaft and having a curved groove;

A drive gear coupled to the drive shaft;

A driven gear coupled to the drive gear and rotating the kiln shaft by rotation of the drive gear;

A kiln composed of an outer kiln and an inner kiln, coupled to the kiln shaft and rotating;

A cauldron installed in the bending groove of the cam and protruding to form a moving member moving along the bending groove when the cam is rotated on one side and protruding an inner hook portion for fixing the inner hook on the other side; And

According to the movement of the moving member is characterized in that it comprises a hinge screw for fixing the hook holder so that the inner hook holder to the arc motion at a predetermined angle.

The movable member of the kiln handle has a body portion vertically extended downward from one side of the kiln holder, and a wing portion extending horizontally at the end of the body portion, the bent groove of the cam is the body portion and the wing of the movable member It has a receiving space for receiving a portion, characterized in that it comprises a cover portion protruding inward on both sides of the upper portion of the curved groove.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a plan view showing the hook of the embroidery machine and sewing machine according to the present invention.

As shown in FIG. 4, the kiln of the embroidery machine and the sewing machine includes a cam 150 having a bent portion 151 formed on a drive shaft (or lower shaft) 112 that is rotated by a main shaft motor (13 of FIG. 1). The drive gear 141 is coupled and installed. The bent groove 151a is formed in the bent portion 151 of the cam 150, and the movable member 121b of the hook holder 121 is installed in the bent groove 151a. When the cam 150 rotates by the rotation of the drive shaft 112, the movable member 121b of the hook 121 moves along the curved groove 151a.

On the other hand, the driven gear 142 is gear-coupled to the drive gear 141. The driven gear 142 rotates the kiln shaft 143 by the rotation of the drive gear 141.

The kiln 120 is coupled to the kiln shaft 143. Although not shown in FIG. 4, the kiln 120 is composed of an outer kiln and an inner kiln, and is rotated by the rotation of the kiln shaft 143.

A kiln holder 121 is provided between the bent portion 151a of the cam 150 and the kiln 120. The kiln 121 is composed of a moving member 121b protruding on one side and an inner hook portion 121a protruding on the other side. At this time, the moving member 121b is installed in the bending groove 151a of the cam 151 and moves along the bending groove 151a when the cam 150 is rotated. Then, the inner hook portion 121a serves to fix the inner hook of the kiln 120.

In addition, the kiln holder 121 is fixed to the kiln base 130 by a hinge screw 122 so that the inner hook portion 121a makes an arc movement at a predetermined angle according to the movement of the movable member 121b. have.

5 is a cross-sectional view illustrating an example in which the movable member 121b of the hook 121 is coupled to the bending groove 151a of the cam 150 according to the present invention.

As shown in FIG. 5, the moving member 121b of the kiln 121 has a body portion 121c vertically extending downward from one side of the kiln 121 and the body portion 121c. It has a wing portion 121d extending horizontally at the end and has an 'I' shape when viewed in cross section. In addition, the bending groove 151a of the cam 150 has a receiving space for receiving the body portion 121c and the wing portion 121d of the moving member 121b, and is provided at both upper sides of the bending groove 151a. Cover portions 151b and 151c protruding inward are formed. The cover parts 151b and 151c prevent the moving member 121b of the kiln 121 from escaping from the bending groove 151a of the cam 150.

As described above, according to the present invention, by forming the bent groove 151a in the cam 151, the cam 150 is rotated by the movable member 121b of the hook holder 121a having the inner hook 121a. As the movement is moved along the bending groove (151a), this is the hook holder 121 is a circular motion while drawing a certain angle. That is, as the kiln 121 performs the arc movement, the inner hook 121a performs the arc movement. As a result, when the thread exits from the kiln 120, the thread and the inner hook 121a are moved. By reducing the friction therebetween, it is possible to prevent the yarn from being caught or twisted due to the hooking mechanism 121a. In addition, the problem of loosening of the thread and weakening of the strength of the thread can also be solved.

In addition, preferred embodiments of the present invention are disclosed for the purpose of illustration, those skilled in the art will be possible to various modifications, changes, additions, etc. within the spirit and scope of the present invention, these modifications and changes belong to the following utility model registration claims Should be seen.

As described above, according to the kiln of the embroidery machine and the sewing machine of the present invention, when the kiln rotates, the inner hook is made to arc at a certain angle by the cam bent portion formed on the kiln rotation shaft, so that the thread falls out of the kiln. When exiting, there was no interference between the thread and the hook part to prevent the thread from breaking or loosening.

Claims (2)

A drive shaft rotated by the main shaft motor; A cam coupled to the drive shaft and having a curved groove; A drive gear coupled to the drive shaft; A driven gear coupled to the drive gear and rotating the kiln shaft by rotation of the drive gear; A kiln composed of an outer kiln and an inner kiln, coupled to the kiln shaft and rotating; A cauldron installed in the bending groove of the cam and protruding to form a moving member moving along the bending groove when the cam is rotated on one side and protruding an inner hook portion for fixing the inner hook on the other side; And The hook holder of the embroidery machine and the sewing machine, characterized in that it comprises a hinge screw for fixing the hook holder so that the inner hook holder to arc at a predetermined angle in accordance with the movement of the movable member. The method of claim 1, The movable member of the kiln holder has a body portion vertically extended from one side of the kiln holder and a wing portion horizontally extended to the end of the body portion, The bending groove of the cam has a receiving space for accommodating the body portion and the wing of the moving member, the hook of the embroidery machine and sewing machine, characterized in that it comprises a cover portion protruding inward on both sides of the upper portion of the bending groove.