CN214032929U - Thread-missing alarm device of sewing machine - Google Patents

Abstract

The utility model relates to a sewing machine monitoring facilities, concretely relates to sewing machine thread shortage alarm device, including bed cover, shuttle bed, shuttle shaft, shuttle peg and sewing thread, sewing machine thread shortage alarm device still includes fiber controller, optic fibre transmitting head and fiber receiver, be provided with light-emitting tube, light-receiving tube and adjustment button on the fiber controller, be provided with the through-hole on the shuttle, the utility model discloses a fiber transmitter and the fiber receiver all with fiber controller electric connection, adjustment button, light-receiving tube and light-emitting tube all with fiber controller electric connection, and light-receiving tube and fiber receiver electric connection, light-emitting tube with fiber transmitter electric connection, adjust the size of the light intensity threshold value through the adjustment button on the fiber sensor, can control the sewing thread length that remains in the sewing machine, thereby achieving the purpose of reducing the rejection rate of the textile.

Description

Thread-missing alarm device of sewing machine

Technical Field

The utility model relates to a sewing machine monitoring facilities, concretely relates to sewing machine thread shortage alarm device.

Background

The industrial sewing machine can cause the rejection of textiles due to the exhaustion of sewing threads on a thread shuttle in the full-automatic sewing process, the existing thread-missing sensor is generally used for checking whether the sewing threads on the thread shuttle are completely exhausted but cannot detect the residual quantity of the threads, and the existing high-grade textiles are not allowed to have thread joints or broken threads, so that the thread joints or broken threads appear on the textiles due to the residual quantity of the existing thread-missing sensor which cannot detect the threads, and the rejection rate of the textiles is increased.

SUMMERY OF THE UTILITY MODEL

To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that a sewing machine that fabrics disability rate is low lacks line alarm device is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a thread shortage alarm device of a sewing machine comprises a bed cover, a shuttle race, a shuttle shaft, a shuttle race and a sewing thread, wherein the sewing thread is sleeved on the shuttle race, the shuttle race is sleeved on the shuttle shaft, the shuttle race is in threaded connection with the bed cover, a shuttle shell is arranged in the bed cover, the shuttle shell is in threaded connection with the shuttle race, a swinging shuttle is arranged in the shuttle race and is sleeved on the shuttle race, the thread shortage alarm device of the sewing machine further comprises an optical fiber controller, an optical fiber transmitting head and an optical fiber receiving head, the optical fiber receiving head and the optical fiber transmitting head are embedded in the bed cover, the optical fiber transmitting head and the optical fiber receiving head are both electrically connected with the optical fiber controller, the optical fiber controller is provided with a light emitting tube, a light receiving tube and an adjusting button, the light receiving tube and the light emitting tube are all electrically connected with the optical fiber controller, the optical receiving tube is electrically connected with the optical fiber receiving head, the light emitting tube is electrically connected with the optical fiber emitting head, and the shuttle is provided with a through hole which is positioned below the optical fiber emitting head.

Preferably, the center line of the optical fiber transmitting head and the center line of the optical fiber receiving head are coincident.

Preferably, the center lines of the optical fiber transmitting head and the optical fiber receiving head are tangent to the bottom diameter of the shuttle peg.

Compared with the prior art, the utility model has the advantages of: the utility model discloses an optic fibre transmitting head with optic fibre receiving head all with fiber controller electric connection, be provided with light-emitting tube, light-receiving tube and adjustment button on the fiber controller, adjustment button, light-receiving tube and light-emitting tube all with fiber controller electric connection, and light-receiving tube with fiber receiver electric connection, light-emitting tube with fiber transmitting head electric connection, fiber controller is the special controller of optical fiber sensor, fiber controller can pass through light-emitting tube and optic fibre transmitting head launch the light beam, can also pass through light-receiving tube and fiber receiver receiving head receipt light beam simultaneously, fiber controller can be according to how much calculation light intensity of light that light-receiving tube received, the light energy that light-receiving tube received is few when the sewing thread all blocks the light beam, the luminous intensity is almost 0, only when the sewing thread part blocks the light beam, the luminous intensity just can be according to what that blocks the light beam and change, when the threshold value of the actual luminous intensity surplus settlement of receipt, optical fiber controller to sewing machine output stop work's signal to adjust the size of luminous intensity threshold value through the last adjustment button of optical fiber sensor, can control the inside remaining sewing thread length of sewing machine, because the line joint or the broken string condition are not allowed to appear on the high-grade fabrics now, and the utility model discloses a lacked wire alarm device can learn the surplus of sewing thread in advance to the surplus of sewing thread can be controlled through the threshold value of settlement, thereby reach the disability rate that reduces the fabrics, its advantage is that the disability rate of fabrics is low.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a left side view of fig. 1.

Wherein: 1-a bed cover; 2-shuttle bed; 3-shuttle shaft; 4-a bobbin; 5-sewing thread; 6-bobbin case; 7-a shuttle hook; 8-an optical fiber controller; 9-an optical fiber transmitting head; 10-an optical fiber receiving head; 11-a light emitting tube; 12-a light receiving tube; 13-an adjustment button; 14-through hole.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and grasped.

As shown in fig. 1-2, a thread-missing alarm device for a sewing machine comprises a bed cover 1, a shuttle bed 2, a shuttle shaft 3, a shuttle peg 4 and a sewing thread 5, wherein the sewing thread 5 is sleeved on the shuttle peg 4, the shuttle peg 4 is sleeved on the shuttle shaft 3, the shuttle shaft 3 is sleeved in the shuttle bed 2, the shuttle bed 2 is in threaded connection with the bed cover 1, a shuttle shell 6 is arranged in the bed cover 1, the shuttle shell 6 is in threaded connection with the shuttle peg 4, a shuttle 7 is arranged in the shuttle bed 2, the shuttle 7 is sleeved on the shuttle peg 4, the thread-missing alarm device for a sewing machine further comprises an optical fiber controller 8, an optical fiber emitting head 9 and an optical fiber receiving head 10, the optical fiber receiving head 10 and the optical fiber emitting head 9 are both embedded in the bed cover 1, the optical fiber emitting head 9 and the optical fiber receiving head 10 are both electrically connected with an optical fiber controller 8, a light emitting tube 11 is arranged on the optical fiber controller 8, The optical fiber controller comprises a light receiving tube 12 and an adjusting button 13, wherein the adjusting button 13, the light receiving tube 12 and a light emitting tube 11 are electrically connected with the optical fiber controller 8, the light receiving tube 12 is electrically connected with an optical fiber receiving head 10, the light emitting tube 11 is electrically connected with an optical fiber emitting head 9, a through hole 14 is formed in the shuttle 7, the through hole 14 is located below the optical fiber emitting head 9, the optical fiber emitting head 9 is overlapped with the central line of the optical fiber receiving head 10, and the central line of the optical fiber emitting head 9 is tangent to the bottom diameter of the shuttle core 4.

The working process of the thread-missing alarm device of the sewing machine is as follows: the optical fiber controller can emit light beams through the light emitting tube and the optical fiber emitting head, and can also receive the light beams through the light receiving tube and the optical fiber receiving head, the working process of the optical fiber controller is that firstly, a light intensity threshold value is set through an adjusting button on the optical fiber controller, when the sewing machine starts to work, the light emitting tube emits infrared light beams to a sewing line through the optical fiber emitting head, the infrared light beams irradiate on the sewing line through the shuttle, when the sewing line is sufficient, the infrared light beams are completely shielded by the sewing line, the optical fiber receiving head cannot receive the infrared light beams, the sewing machine normally works, when the remaining sewing line length is reduced to a certain value, the optical fiber receiving head starts to receive the infrared light beams, at the moment, the optical fiber receiving head feeds back the intensity of the received infrared light beams to the optical fiber controller through the light receiving tube, and the optical fiber controller compares the light intensity in the sewing tube with the set light intensity threshold value, when the light intensity in the light receiving tube is greater than the set light intensity threshold value, the optical fiber controller sends out signals for alarming and stopping working to the sewing machine, the sewing machine stops working until thread supplement is completed, the optical fiber controller is a special controller for an optical fiber sensor, one side of the optical fiber controller can emit light beams through the light emitting tube, the other side of the optical fiber controller can receive the light beams through the light receiving tube, the optical fiber controller can calculate the light intensity according to the quantity of the light received by the light receiving tube, when the sewing thread completely blocks the light beams, the light energy received by the light receiving tube is little, the light intensity is almost 0, only when the sewing thread partially blocks the light beams, the light intensity can be changed according to the quantity of the blocked light beams, when the actual received light intensity is greater than the set threshold value, the optical fiber controller outputs the signals for stopping working to the sewing machine, and adjusts the size of the light intensity threshold value through an adjusting button, can control the inside remaining sewing thread length of sewing machine, because on the high-grade fabrics now do not allow the line to connect or the broken string condition to appear, consequently the utility model discloses a lack of line alarm device can learn the surplus of sewing thread in advance to can control the surplus of sewing thread through the threshold value of setting for, thereby reach the disability rate that reduces the fabrics.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (3)

1. A thread shortage alarm device of a sewing machine comprises a bed cover (1), a shuttle race (2), a shuttle shaft (3), a shuttle peg (4) and a sewing thread (5), wherein the sewing thread (5) is sleeved on the shuttle peg (4), the shuttle peg (4) is sleeved on the shuttle shaft (3), the shuttle shaft (3) is sleeved in the shuttle race (2), the shuttle race (2) is in threaded connection with the bed cover (1), a shuttle shell (6) is arranged in the bed cover (1), the shuttle shell (6) is in threaded connection with the shuttle peg (4), a shuttle hook (7) is arranged in the shuttle race (2), and the shuttle hook (7) is sleeved on the shuttle peg (4), the thread shortage alarm device is characterized by further comprising an optical fiber controller (8), an optical fiber emitting head (9) and an optical fiber receiving head (10), and the optical fiber receiving head (10) and the optical fiber emitting head (9) are embedded in the bed cover (1), the optical fiber transmitting head (9) and the optical fiber receiving head (10) are electrically connected with an optical fiber controller (8), a light emitting tube (11), a light receiving tube (12) and an adjusting button (13) are arranged on the optical fiber controller (8), the adjusting button (13), the light receiving tube (12) and the light emitting tube (11) are electrically connected with the optical fiber controller (8), the light receiving tube (12) is electrically connected with the optical fiber receiving head (10), the light emitting tube (11) is electrically connected with the optical fiber transmitting head (9), a through hole (14) is formed in the shuttle (7), and the through hole (14) is located below the optical fiber transmitting head (9).

2. A sewing machine thread-missing warning device according to claim 1, characterized in that the fiber-emitting head (9) coincides with the centerline of the fiber-receiving head (10).

3. A sewing machine thread-missing warning device according to claim 2, characterized in that the centre lines of the fiber-emitting head (9) and the fiber-receiving head (10) are tangent to the base diameter of the bobbin (4).

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