CN217709896U - Thread missing alarm device for shuttle hook and rotating shuttle of sewing machine - Google Patents

Abstract

The utility model discloses a thread missing alarm device for sewing machine shuttle and rotating shuttle, including the sewing machine body, sewing thread batching line ball twines on the shuttle peg, and the shuttle peg is put and is installed on the fixed column in the shuttle frame in the bobbin case, and rotating shuttle frame dress is in the shuttle race, and its annular flange guide keeps certain fit clearance with the shuttle race slot. The shuttle frame is internally provided with a fixed column which is sleeved on the shuttle shell and the shuttle peg, and the fixed shaft in the shuttle shell is connected with the shaft hole in the middle of the shuttle peg. The sewing machine body is provided with a thread-missing alarm device which comprises a laser emitting head, a laser receiver and a laser controller, wherein the laser controller is connected with the laser emitting head and the laser receiver through cables to form a set of complete laser loop; the bobbin case is provided with a through hole which is positioned under the laser emitting head. The thread lack alarm device is arranged outside the shuttle race and does not contact with the rotating shuttle on the sewing machine, so that the residual quantity of the sewing thread can be detected, and the thread lack alarm function is realized on the sewing machine using the rotating shuttle process.

Description

Thread missing alarm device for shuttle hook and rotating shuttle of sewing machine

Technical Field

The utility model belongs to sewing machine monitoring facilities makes the field, especially relates to a thread shortage alarm device that is used for sewing machine shuttle and rotating shuttle.

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.

In the actual production process, two types of thread shuttles are used in an industrial sewing machine, namely a rotating shuttle and a swinging shuttle. Generally, the shuttle is less expensive to manufacture and is used in low and medium end sewing machines, such as inexpensive electric sewing machines. The rotating speed of the rotating shuttle is uniform and stable, and higher speed can be achieved, so that the rotating shuttle is used for medium and high-grade electric sewing machines.

The principle of the stitch formation of the rotating shuttle and the swinging shuttle is the same, but the process and the method of the stitch formation of the rotating shuttle are different from those of the swinging shuttle. The rotating shuttle rotates at an equal angular speed, the swinging shuttle does reciprocating swinging motion at different speeds, the rotating shuttle rotates for two circles at an equal angular speed in one up-and-down reciprocating motion of the needle, but the swinging shuttle only swings back and forth once. In the rotating shuttle, the shuttle frame, the shuttle shell and the shuttle peg are fixed, while the shuttle race rotates, the shuttle race tip hooks the thread loop, the rotating shuttle frame hook divides the thread to wind around the shuttle peg sleeve and the upper edge of the bottom of the shuttle frame, and the thread is separated from the outside of the rotating shuttle plate head to form the thread loop.

In the prior art, the original thread-missing alarm device made by using the optical fiber technology can only be used on shuttle-swinging equipment because the sending head and the receiving head of the optical fiber are installed on the shuttle race, and the shuttle race of the rotating shuttle rotates at a high speed, so that the sending head and the receiving head made by using the optical fiber technology cannot be installed.

Disclosure of Invention

To the defect that above-mentioned prior art exists, the utility model discloses the technical problem that will solve is: a thread missing alarm device which can be used on both a rotating shuttle and a shuttle hook shuttle bed is provided.

In order to solve the technical problem, the utility model discloses a realize through following technical measure: a thread missing alarm device for a shuttle hook and a rotating shuttle of a sewing machine comprises a sewing machine body serving as a basic structure and a sewing thread wound as a knitting thread, wherein the sewing thread is coiled into a thread coil and wound on a bobbin, the bobbin is sleeved on a fixed shaft of a bobbin case, the bobbin case is installed in a shuttle frame, the shuttle frame is installed in a shuttle race, an annular flange track of the shuttle frame is embedded with a groove of the shuttle race, and the shuttle frame and the shuttle race can flexibly rotate. The sewing machine comprises a sewing machine body, a thread missing alarm device, a thread missing control device and a thread detecting device, wherein the sewing machine body is provided with the thread missing alarm device, the thread missing alarm device is provided with a laser emitting head with an emitting function and a laser receiver with a receiving function, the laser emitting head and the laser receiver are symmetrically arranged at the upper end and the lower end of a concave laser mounting box, the thread missing alarm device is provided with a laser controller with a control operation function, and the laser controller is electrically connected with the laser emitting head and the laser receiver to form a set of complete laser loop; the shuttle shell is provided with a through hole, and the through hole is located under the laser emitting head.

As an improvement of the utility model, be equipped with the button that sets up laser break-make number signal on the laser controller.

As an improvement of the present invention, the center line of the laser emitting head coincides with the center line of the laser receiver.

As an improvement of the present invention, the laser emitting head is tangent to the central line of the laser receiver and the bottom diameter of the bobbin.

Compared with the prior art, the utility model has the advantages of: the utility model discloses a laser emission head and laser receiver all with laser controller electric connection, there is the adjustment button that sets up on the laser controller, the laser controller is the special controller of laser sensor, the laser controller can be through laser emission head launch light beam, simultaneously can also receive the light beam through light receiver, laser controller can be according to how much the length of surplus sewing thread of calculation of laser receiver received the break-make of light beam, when the sewing thread all blocks the light beam, light beam that light receiver can not receive in a certain time, laser controller resets, the zero clearing of accumulative total light beam break-make number, only when the sewing thread does not block the light beam, laser receiver can send break-make signal when receiving the light beam break-make, laser controller counts according to the signal, when the count reachs the setting value or is greater than the setting value, laser controller is to the signal of sewing machine output stop work, and can set up the data value of light beam break-make through the setting button on the laser controller, can control the inside surplus sewing thread length that leaves of sewing machine, because the surplus of the light beam that does not allow to appear on the high-grade fabrics now, and the surplus of the quantity of the fabric reaches the setting for the quantity, and the surplus of the light beam control. The thread-missing alarm device can be used in two models of a rotating shuttle and a swinging shuttle of the sewing machine.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

fig. 1 is a schematic view of a thread missing alarm device for a shuttle hook and a rotating shuttle of a sewing machine according to the present invention.

Fig. 2 is a schematic view of the laser beam passing according to the present invention.

Description of reference numerals: 1. a sewing machine body; 2. a laser mounting box; 3. a laser controller; 4. a laser emitting head; 5. a laser receiver; 6. a shuttle bed; 7. a shuttle frame; 8. a bobbin case; 9. a bobbin; 10. sewing thread; 11. a laser beam.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Example 1

Referring to fig. 1-2, the present embodiment provides a thread shortage warning device for a shuttle and a rotating shuttle of a sewing machine, including a sewing machine body 1 as a basic structure and a sewing thread 10 for knitting and winding, the sewing thread 10 is rolled into a thread roll and sleeved on a bobbin 9, the bobbin 9 is sleeved on a fixed shaft of a bobbin case 8, the fixed shaft of the bobbin case is sleeved on a fixed column of a bobbin carriage 7, and a groove of a bobbin bed 6 is connected with an annular track of the bobbin carriage 7. The thread missing alarm device is provided with a laser emitting head 4 with an emitting function and a laser receiver 5 with a receiving function, the laser emitting head 4 and the laser receiver 5 are symmetrically arranged at the upper end and the lower end of a concave laser mounting box 2, the thread missing alarm device is provided with a laser controller 3 with a control operation function, and the laser controller 3 is electrically connected with the laser emitting head 4 and the laser receiver 5 to form a set of complete laser loop; the bobbin case 8 is provided with a through hole which is positioned under the laser emitting head 4.

As an improvement of the utility model, be equipped with the button that sets up laser break-make signal on the laser controller, the button is for dabbing the on-off formula, can set up the number of laser break-make signal from top to bottom through the button.

As an improvement of the utility model, the central line of the laser emitting head 4 coincides with the central line of the laser receiver 5, so that the laser emitting and the receiving signal are more effective and accurate.

Referring to fig. 2, as an improvement of the present invention, the center lines of the laser emitting head 4 and the laser receiver 5 are tangent to the bottom diameter of the bobbin 9, so that the laser controller can accurately detect the sewing thread 10 on the bobbin 9 by the laser beam 11 without error once the sewing thread is running out.

The embodiment provides a thread missing alarm device for a shuttle hook and a rotating shuttle of a sewing machine, during ordinary use, light beams emitted by a laser emitting head 4 pass through holes in a shuttle shell 8, when a large number of sewing threads 10 are arranged on a shuttle core 9, the sewing threads 10 can completely block the light beams, a light receiver can not receive the light beams within a certain time, a laser controller resets, the accumulated on-off number of the light beams is reset, only when the light beams are not blocked by the sewing threads 10, the laser receiver 5 can send out on-off signals when receiving the on-off of the light beams, the laser controller counts according to the signals, and when the count reaches a set value or is greater than the set value, the laser controller outputs signals for stopping working to the sewing machine. The operator can set up the data value of light beam break-make through the last setting button of laser controller, can control the inside remaining sewing thread 10 length of sewing machine, because the wire joint or the broken string condition of not allowing to appear on present high-grade fabrics, and the utility model discloses a thread shortage alarm device can learn the surplus of sewing thread 10 in advance to the data value of light beam break-make that can set for controls the surplus of sewing thread 10, thereby reaches the mesh that reduces the disability rate of fabrics.

The thread shortage alarm device for the shuttle hook and the rotating shuttle of the sewing machine is directly installed outside the shuttle race 6, namely on the sewing machine body 1, any contact with the rotating shuttle on the sewing machine is not generated, and the surplus of the sewing thread 10 in the shuttle peg 9 can be detected, so that the thread shortage alarm function can be realized on the sewing machine using the rotating shuttle process. And simultaneously, thread shortage alarm device also can realize the thread shortage alarm function on the sewing machine that uses shuttle technology.

The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed. All changes which come within the scope of the invention as defined by the independent claims are to be embraced within their scope.

Claims (4)

1. A thread missing alarm device for a shuttle hook and a rotating shuttle of a sewing machine comprises a sewing machine body (1) serving as a basic structure and a sewing thread (10) serving as a knitting thread winding, wherein the sewing thread (10) is coiled into a thread coil and wound on a bobbin (9), the bobbin (9) is sleeved in a bobbin case (8) and sleeved on a fixing column of a shuttle frame (7), the shuttle frame is installed in a shuttle race (6), an annular flange guide rail of the shuttle frame and a shuttle race groove keep a certain fit clearance and can flexibly rotate, the shuttle frame is internally provided with the bobbin case (8), the shuttle case (8) is internally connected with the bobbin (9), the shuttle frame is internally provided with the shuttle race (6), and the shuttle frame cannot rotate when the shuttle race rotates rapidly, and the thread missing alarm device is characterized in that: the thread missing alarm device is characterized in that the sewing machine body (1) is provided with a thread missing alarm device, the thread missing alarm device is provided with a laser emitting head (4) with an emitting function and a laser receiver (5) with a receiving function, the laser emitting head (4) and the laser receiver (5) are symmetrically installed at the upper end and the lower end of a concave laser installation box (2), the thread missing alarm device is provided with a laser controller (3) with a control operation function, and the laser controller (3) is electrically connected with the laser emitting head (4) and the laser receiver (5) to form a set of complete laser loop; the shuttle shell (8) is provided with a through hole, and the through hole is positioned under the laser emitting head (4).

2. The thread missing alarm device for the shuttle hook and the rotating shuttle of the sewing machine as claimed in claim 1, wherein: and buttons for setting the on-off number of the laser signals are arranged on the laser controller (3).

3. The thread missing alarm device for the sewing machine shuttle hook and the rotating shuttle according to claim 1, wherein: the central line of the laser emitting head (4) is coincided with the central line of the laser receiver (5).

4. The thread missing alarm device for the shuttle hook and the rotating shuttle of the sewing machine as claimed in claim 1, wherein: the center lines of the laser emitting head (4) and the laser receiver (5) are tangent to the bottom diameter of the shuttle peg (9).

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