CN216738832U

CN216738832U - Sewing machine with broken string detects function

Info

Publication number: CN216738832U
Application number: CN202220028490.6U
Authority: CN
Inventors: 张建忠; 沈闽川; 刘寒斌
Original assignee: Wenzhou Chuane Automation Equipment Co ltd
Current assignee: Wenzhou Chuane Automation Equipment Co ltd
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2022-06-14
Anticipated expiration: 2032-01-06

Abstract

The utility model provides a sewing machine with broken string detects function, which comprises a workbench, bottom line broken string detection device, set up the sewing machine main part on the workstation, the sewing machine main part includes aircraft nose and fuselage, be equipped with the control box on the workstation, bottom line broken string detection device is including setting up the shuttle peg on the workstation, be connected to the sensor of control box, the side of shuttle peg is equipped with the detection zone, the sensor is located the top that the shuttle peg set up the side of detection zone and is fixed in aircraft nose department, the recess of detection zone for setting up in the side of shuttle peg, the recess bottom sets up dark color zone, and be provided with two sets ofly. The workbench is also provided with a feeding piece, so that the shuttle peg can be prevented from being shielded by cloth, and the working stability of the bottom line breakage detection device can be ensured when the sewing machine sews narrow and long cloth. Meanwhile, the utility model is also additionally provided with an upper thread breakage detection device and a fabric detection device, thereby further improving the functionality of the utility model.

Description

Sewing machine with broken string detects function

Technical Field

The utility model relates to the technical field of sewing machines, in particular to a sewing machine with a broken thread detection function.

Background

For sewing narrow and long fabrics such as cloth belts, edge wrapping strips and the like, a corresponding automatic sewing machine appears in the prior art, and generally comprises a workbench and a sewing machine main body, wherein a needle is arranged on the sewing machine main body, and a shuttle peg is arranged on the workbench. The bottom thread and the upper thread are interwoven and sewn on the fabric through the matching of the machine needle and the shuttle peg. The bobbin thread is wound in the bobbin, the upper thread penetrates through the needle, the bobbin thread and the upper thread can be broken in the working process of the sewing machine, the broken thread situation of the bobbin thread and the upper thread is difficult to avoid, a section of useless track is easily left on the upper thread when the bobbin thread or the upper thread is broken, the sewing quality is affected, and therefore the sewing machine needs to be additionally provided with the broken thread detection device. The publication number 'CN 205603828U' discloses a sewing machine bottom line detection device, shuttle peg, push pedal, cushion, photoelectric sensor, splint and main shaft control box, photoelectric sensor set up between cushion and splint, the cushion set up with the push pedal on, the shuttle peg sets up on photoelectric sensor's one side sewing machine bobbin case, a side of shuttle peg is provided with a plurality of highlight district and weak light district in turn, is provided with the magnet steel on the other side, photoelectric sensor's transmitting terminal and receiving terminal just to the shuttle peg on the bobbin case to be connected to the main shaft control box.

However, the technical scheme has the problem of unstable detection when being arranged in a sewing machine for sewing narrow and long fabrics such as cloth belts, edge strips and the like. If the strong light area and the weak light area that set up on the side of shuttle peg in this technical scheme are on the coplanar, receive the influence of ambient light source easily, can exert an influence to photoelectric sensor's sensitivity. If the bobbin is arranged below the workbench, the bobbin is inconvenient to view by a sewing machine provided with the bobbin cutting device, the axis of the bobbin of most existing sewing machines is parallel to the normal of the workbench, an observation groove is formed in the surface of the workbench, the bobbin is arranged in the observation groove, an operator can observe the working state of the bobbin conveniently, cloth moves above the workbench, and the condition that the bobbin is shielded to cause failure of the bobbin detection device easily occurs in the cloth moving process. Therefore, there is instability in applying the technical solution to the existing sewing machine, and improvement on the existing sewing equipment is needed. Meanwhile, it should be noted that the sewing machine needs to detect not only the bottom thread but also the upper thread, and if the two places also need to be observed by the naked eye of the operator, it is a burden for the operator.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the present invention is to provide a sewing machine with a thread breakage detection function, which is suitable for sewing narrow and long fabrics, can detect the broken bottom thread and has better detection stability, and can detect the broken upper thread and detect whether the fabrics are used up, thereby greatly releasing manpower.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a sewing machine with broken string detects function, including workstation, bottom line broken string detection device, set up the sewing machine main part on the workstation, sewing machine main part includes aircraft nose and fuselage, is equipped with the control box on the workstation, bottom line broken string detection device is including setting up the shuttle peg on the workstation, be connected to the sensor of control box, the side of shuttle peg is equipped with the detection zone, the sensor is located the top that the shuttle peg set up the side of detection zone, its characterized in that: the detection zone is provided with two sets ofly, and the detection zone is for setting up in the recess of the side of shuttle peg, and the recess bottom sets up dark color zone, and on the sensor was fixed in the aircraft nose, still was equipped with the pay-off piece on the workstation, and the one end that the pay-off piece is close to the aircraft nose is the discharging pipe, and the other end is the feed end, and the discharging pipe sets up in the below of aircraft nose.

By adopting the technical scheme, when the sewing machine works, the shuttle peg rotates rapidly, the detection area rotates along with the shuttle peg, and the photoelectric sensor can acquire high-low frequency periodically-changed electric signals generated by two dark areas and non-dark areas on the shuttle peg alternately; if the bobbin stops rotating after the bottom thread is broken, the photoelectric sensor receives an electric signal with non-periodic change, and the control box stops the sewing machine. The detection zone sets up two sets ofly, and in the unit cycle time, the sensor obtains two high frequency signal, just can not report to the police to prevent the mistake and touch. Because the detection area on the shuttle peg is a groove, the bottom of the groove is a dark area, and when the ambient light source changes, the bottom of the groove can be in a relatively dark state due to the height difference, the influence of the ambient light source is reduced, and the detection effect of the sensor is ensured; the discharge end of pay-off piece can be regular to the cloth, avoids the cloth to shelter from the detection zone, also enables the operator to see lock core operating condition conveniently simultaneously, so can effectively guarantee the stability of bottom line broken string detection function.

The sewing machine with the broken thread detection function can be further provided with: the shuttle peg sets up two sets ofly, including first shuttle peg and second shuttle peg, the discharging pipe sets up between first shuttle peg and second shuttle peg, and the sensor sets up two sets ofly, including setting up in the first sensor of second shuttle peg top, setting up in the second sensor of first shuttle peg top, first sensor, second sensor are fixed in aircraft nose department through the mounting bracket.

By adopting the technical scheme, the first shuttle peg and the second shuttle peg are arranged, and the first sensor and the second sensor are respectively arranged corresponding to the second shuttle peg and the first shuttle peg, so that the double-needle sewing machine can be suitable for the condition that the sewing machine is a double-needle machine, and can simultaneously detect the broken thread of two bottom threads positioned at two sides of the machine head. And the control box is connected with the sensor assembly, so that the control box monitors the working states of the two sensors, and conveniently and intuitively judges which bobbin has the bobbin thread breakage condition at present. Meanwhile, the control box can close one of the sensors, so that a single bottom thread can be detected, and the sewing machine can be suitable for the condition that the sewing machine is a single-needle machine. Compared with the traditional bottom line breaking device, the bobbin breaking device is provided with two groups of bobbins and two groups of sensors, and has better adaptability.

The sewing machine with the broken thread detection function can be further provided with: one end that the mounting bracket is connected with the aircraft nose is equipped with the adjustment tank that is used for adjusting first sensor and second sensor position.

By adopting the technical scheme, the mounting positions of the first sensor and the second sensor can be adjusted by arranging the adjusting groove, so that the first sensor and the second sensor are in proper positions to ensure the detection effect. Meanwhile, in the process of long-term use, the positions of the first sensor and the second sensor deviate or the shuttle peg is replaced due to reasons such as vibration, and the positions of the first sensor and the second sensor can be conveniently and timely adjusted.

The sewing machine with the broken thread detection function can be further provided with: the two detection areas are symmetrically distributed and are positioned on the same radial line.

By adopting the technical scheme, because the two detection areas are symmetrically distributed and are positioned on the same radial line, when the shuttle peg rotates, the time intervals of the signals of the two groups of detection areas obtained by the sensor are the same, so that the signals are in more regular periodic change, and the program design is convenient.

The sewing machine with the broken thread detection function can be further provided as follows: the upper thread breakage detection device is arranged on the workbench and comprises a third sensor, the third sensor is a friction sensor, a plurality of thread through holes are formed in the friction sensor, the friction sensor is connected with the workbench through a support, and the friction sensor is connected with the control box.

By adopting the technical scheme, the upper thread passes through the thread passing through hole of the friction sensor, when the sewing machine works, the upper thread continuously passes through the thread passing through hole, when the upper thread is disconnected, the upper thread is not in contact with the friction sensor, and the friction sensor sends a signal, so that the control box stops the sewing machine in time and gives an alarm. Therefore, the utility model can detect the broken thread of the upper thread and avoid the situation that the sewing machine continues to work and wastes the fabric after the upper thread is broken.

The sewing machine with the broken thread detection function can be further provided with: still be equipped with surface fabric detection device on the workstation, surface fabric detection device is including the fourth sensor, and the fourth sensor sets up in the feed end department of pay-off piece, and the fourth sensor is connected with the control box.

By adopting the technical scheme, the fourth sensor of the fabric detection device is arranged at the feeding end of the feeding piece and used for detecting whether the fabric passes through. When the fabric is used up, the fourth sensor detects that no fabric passes through, and sends a signal to the control box to stop the sewing machine, so that the fabric detection can be realized, and the sewing machine is prevented from continuously performing empty sewing after the fabric is used up.

The utility model has the beneficial effects that: the utility model provides a sewing machine with broken string detects function, is applicable to narrow and long surface fabric and sews, can detect the bottom line broken string and detection stability is better, can also carry out the broken string to the facial line simultaneously and detect and whether the surface fabric is used up to detect, greatly liberates the manpower.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

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

FIG. 2 is a partial schematic structural view of the present invention;

FIG. 3 is a schematic view of the bobbin configuration of the present invention;

FIG. 4 is a schematic view of a mounting bracket and sensor of the present invention;

FIG. 5 is a schematic view of a friction sensor of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A sewing machine with broken thread detection function as shown in fig. 1 to 5, a sewing machine with broken thread detection function, including workstation 1, bottom thread broken thread detection device 2, set up sewing machine main part 3 on workstation 1, sewing machine main part 3 includes aircraft nose 31 and fuselage 32, be equipped with control box 4 on workstation 1, bottom thread broken thread detection device 2 is including setting up shuttle peg 21 on workstation 1, be connected to control box 4's sensor 22, the side of shuttle peg 21 is equipped with detection zone 211, sensor 22 is located the top that shuttle peg 21 set up the side of detection zone 211, detection zone 211 is provided with two sets ofly, two detection zones 211 are the symmetric distribution, two detection zones 211 are in on the same radial line. The detection zone 211 is the recess that sets up in the side of cop latch 21, and the recess bottom sets up the dark zone, and cop latch 21 sets up two sets ofly, including first cop latch 212 and second cop latch 213, discharging pipe 51 sets up between first cop latch 212 and second cop latch 213, and sensor 22 sets up two sets ofly, including setting up the first sensor 221 in first cop latch 212 top, set up the second sensor 222 in second cop latch 213 top, and first sensor 221, second sensor 222 ware are fixed in aircraft nose 31 department through mounting bracket 23. An end of the mounting bracket 23 connected to the head 31 is provided with an adjustment groove 231 for adjusting the positions of the first sensor 221 and the second sensor 222. The workbench 1 is also provided with a feeding piece 5, one end of the feeding piece 5 close to the machine head 31 is a discharging pipe 51, the other end of the feeding piece 5 is a feeding end 52, and the discharging pipe 51 is arranged below the machine head 31.

The upper thread breakage detection device 6 is arranged on the workbench 1, the upper thread breakage detection device 6 comprises a third sensor 61, the third sensor 61 is a friction sensor, a plurality of thread through holes 611 are formed in the friction sensor, the friction sensor is connected with the workbench 1 through a support 62, and the friction sensor is connected with the control box 4.

The workbench 1 is further provided with a fabric detection device 7, the fabric detection device 7 comprises a fourth sensor 71, the fourth sensor 71 is arranged at the feeding end 52 of the feeding piece 5, and the fourth sensor 71 is connected with the control box 4. Wherein the fourth sensor 71 may be a photo sensor.

The sewing machine is suitable for sewing narrow and long cloth, can detect the broken bottom threads more stably, can detect the broken top threads and detect whether the fabric is used up or not, and an operator does not need to observe the bottom threads, the top threads and the fabric constantly, so that the work load of the operator is reduced, and the sewing machine is favorable for realizing automation.

The working principle of the bottom line breakage detection device is as follows: when the fabric enters from the feeding end 52 of the feeding member 5 and is discharged from the discharging pipe 51, the fabric is limited by the discharging pipe 51 and does not block the first bobbin 212 and the second bobbin 213 distributed on both sides of the discharging pipe 51. When the sewing machine body 3 starts sewing work, the two groups of bobbins 21 rotate, the detection area 211 arranged on the side surface of the bobbin 21 rotates along with the rotation, the first sensor 221 and the second sensor 222 are photoelectric sensors, when the bobbin 21 rotates, the two groups of sensors can obtain signals with periodic changes, the control box 4 cannot prevent the sewing machine body 3 from working, once the bobbin 21 is broken, the bobbin 21 stops rotating, for example, the first bobbin 212 stops rotating, the first sensor 221 does not obtain signals with periodic changes any more, the control box 4 stops the sewing machine body 3 from working in time, and the display screen can prompt that the bobbin thread wound at the first bobbin 212 is broken; otherwise, the same principle is applied when the bobbin thread wound on the second bobbin is broken.

The working principle of the upper thread breakage detection device provided by the utility model is as follows: when the sewing machine body 3 is in operation, the upper thread continuously passes through the thread passing through hole 611 on the friction sensor, when the friction sensor detects that the upper thread continuously rubs with the friction sensor, the control box 4 can not prevent the sewing machine body 3 from working, and when the upper thread breaks, the upper thread is not continuously contacted with the thread passing through hole 611, at the moment, the control box enables the sewing machine body 3 to stop working immediately, and the prompt is carried out through a display screen or in a mode of giving an alarm and the like.

The working principle of the fabric detection device is as follows: taking the fourth sensor 71 as an example of a photoelectric sensor, when the fabric continuously shields the photoelectric sensor, the control box 4 does not prevent the sewing machine main body 3 from working, and when the fabric is used up and does not shield the photoelectric sensor, the control box 4 stops the sewing machine main body 3 from working immediately, and prompts in a display screen or an alarm or other modes.

Claims

1. The utility model provides a sewing machine with broken string detects function, includes workstation, bottom line broken string detection device, sets up the sewing machine main part on the workstation, the sewing machine main part includes aircraft nose and fuselage, be equipped with the control box on the workstation, bottom line broken string detection device is including setting up the shuttle peg on the workstation, being connected to the sensor of control box, the side of shuttle peg is equipped with the detection zone, the sensor is located the top that the shuttle peg set up the side of detection zone, its characterized in that: the detection areas are two groups, the detection areas are grooves formed in the side faces of the shuttle peg, dark color areas are arranged at the bottoms of the grooves, the sensor is fixed on the machine head, a feeding piece is further arranged on the workbench, a discharging pipe is arranged at one end, close to the machine head, of the feeding piece, the other end of the feeding piece is a feeding end, and the discharging pipe is arranged below the machine head.

2. The sewing machine with a thread breakage detecting function according to claim 1, characterized in that: the shuttle peg sets up two sets ofly, including first shuttle peg and second shuttle peg, the discharging pipe sets up between first shuttle peg and second shuttle peg, the sensor sets up two sets ofly, including setting up in the first sensor of second shuttle peg top, setting up in the second sensor of first shuttle peg top, first sensor, second sensor are fixed in aircraft nose department through the mounting bracket.

3. The sewing machine with a thread breakage detecting function according to claim 2, characterized in that: one end of the mounting frame connected with the machine head is provided with an adjusting groove used for adjusting the positions of the first sensor and the second sensor.

4. The sewing machine with a thread breakage detecting function according to claim 1, characterized in that: the two detection areas are symmetrically distributed and are positioned on the same radial line.

5. The sewing machine with a thread breakage detecting function according to claim 1, characterized in that: the upper thread breakage detection device is arranged on the workbench and comprises a third sensor, the third sensor is a friction sensor, a plurality of thread through holes are formed in the friction sensor, the friction sensor is connected with the workbench through a support, and the friction sensor is connected with the control box.

6. The sewing machine with a thread breakage detecting function according to claim 1, characterized in that: the fabric detection device is arranged on the workbench and comprises a fourth sensor, the fourth sensor is arranged at the feeding end of the feeding piece, and the fourth sensor is connected with the control box.