Yarn shearing device with broken yarn detection function

Abstract

The invention discloses a yarn cutting device with a broken yarn detection function, and belongs to the technical field of spinning. The method comprises the following steps: designing a yarn cutting device with a broken yarn detection function, wherein the yarn cutting device can detect the breakage condition of filaments and cut the filaments; the device comprises a broken wire detection part, a shearing device, a driven gear, a driving gear, a driving module and a shell. According to the invention, the contact type broken yarn sensor is interconnected with the shearing device, so that the breakage condition of filaments and short fibers can be detected in real time, the problem can be found and actively processed in the first time, and the production stagnation caused by broken yarns is avoided; therefore, the production efficiency is improved, and intelligent and automatic detection is realized. The device is low in cost, easy to operate, convenient to maintain, not prone to being affected by environmental changes, capable of adapting to various types of filaments and wide in application prospect.

Description

Technical Field

[0001] The present application relates to a yarn cutting device with a broken yarn detection function, and relates to the technical field of spinning. Background Art

[0002] The rotor composite spinning technology is a free-end spinning technology that realizes the feeding, combing and winding processes through the combined action of machinery and airflow. This technology combines the characteristics of rotor spinning and composite spinning. By composite spinning filaments and staple fibers on a rotor spinning machine, the composite yarn formed has the advantages of high strength, good yarn uniformity, stable structure and less hairiness. However, in the actual production process, raw material quality, spinning process parameters, improper operation, equipment failure, environmental factors, etc. may cause yarn breakage, filament breakage and staple fiber continued feeding, resulting in problems such as raw material waste, reduced composite yarn quality, reduced production efficiency and increased costs.

[0003] In order to solve the above problems, the Chinese patent with publication number CN110485012A discloses a broken wire detection and alarm device for elastic yarn processing. By pressing the pressure roller on the wire, the wire will have tension during normal processing to overcome the pulling force of the first spring and support the pressure roller and the L-shaped rod. When the wire breaks, the tension between the wires disappears. Under the pulling force of the first spring, the L-shaped rod drives the pressure roller to rotate clockwise until the push touch plate moves to the left to trigger the button, thereby alarming the staff. However, the design of the device is relatively complicated and can only send an alarm signal when the broken yarn is detected to remind the staff to perform the broken yarn operation. It cannot actively break the wire and has poor flexibility.

[0004] The Chinese patent with the announcement number CN218115721U discloses a broken end alarm device for metal filament composite spinning, which is provided with a pressing rod and a rotating wheel fixed on a mounting part, and the metal filament is wound in a limit groove on the rotating wheel, so that the metal filament is parallel to the length side of the box body, and the rotating wheel rotates with the movement of the metal filament during the spinning process; when the metal filament is broken, the reset spring bounces the pressing rod, and the third static contact at one end of the elastic guide plate contacts the first static contact on the first guide plate. Since the third guide plate is connected to the power supply, and is sequentially connected with the warning light, the first guide plate, and the elastic guide plate, a closed loop is formed, and the warning light flashes, generating an alarm. However, the device occupies a large space, and can only send out an alarm signal when the yarn is broken, and cannot achieve the effect of active yarn breaking.

[0005] In view of the fact that the existing devices cannot achieve the effect of active yarn cutting, the Chinese patent with publication number CN114381833A discloses a linkage control system, control method and control device in the yarn spinning process. By adopting a first wire cutting device, a second wire cutting device and a control device, the filaments and the staple fibers can be actively cut off at the same time when any one of the filaments and the staple fibers breaks. Although the effect of active cutting when the yarn breaks is achieved, the waste of raw materials is avoided and the spinning efficiency is improved to a certain extent, the device proposed in this scheme is relatively complex and costly, and two wire cutting devices are required to complete the cutting operation. Summary of the invention

[0006] In order to solve the problems existing in the above-mentioned prior art, the present application provides a yarn cutting device with a broken wire detection function, which can accurately detect broken wires of the silk thread and cut the filaments in time when the broken wire signal is received. The device has low cost, simple operation, convenient maintenance, is not easily affected by environmental changes, can adapt to various types of filaments, and has broad application prospects.

[0007] The second object of the present invention is to provide a yarn cutting device with a broken wire detection function, comprising a broken wire detection part 1, a cutting device 2, a driven gear 3, a driving gear 4, a driving module 5 and a frame 6, wherein the broken wire detection part 1, the cutting device 2, the driven gear 3, the driving gear 4 and the driving module 5 are all fixed on the frame 6;

[0008] The broken wire detection part 1 includes: a support frame A1, a detection lever A2, a photoelectric sensor A3 and a wear-resistant sleeve A4, wherein the support frame A1 is used to provide a support point for the detection lever A2, so that the two ends of the detection lever A2 have different up and down relationships depending on whether the filament is broken, and the photoelectric sensor A3 is used to realize broken wire detection according to the different up and down relationships between the two ends of the detection lever A2.

[0009] Optionally, the photoelectric sensor A3 includes a light transmitter and a light receiver, which are respectively arranged on two opposite supports on the frame 6; the detection lever A2 is divided into a long end and a short end by the support frame A1, and the short end is provided with a wear-resistant sleeve A4 for the filament to pass through; the long end is within or outside the monitoring range of the photoelectric sensor A3 according to whether the filament in the wear-resistant sleeve A4 at the short end is broken, so as to realize whether the light signal is blocked.

[0010] Optionally, the length ratio of the long end to the short end of the detection lever A2 is 3:2.

[0011] Optionally, the cutting device 2 is located below the broken yarn detection part 1, and the cutting device 2 is interconnected with the contact type broken yarn sensor, and determines whether to perform the cutting operation according to whether the contact type broken yarn sensor sends a broken yarn signal.

[0012] Optionally, the driving module 5 is used to receive a broken yarn signal from a contact-type broken yarn sensor, and drive the driving gear 4 to rotate according to the broken yarn signal.

[0013] Optionally, the driving gear 4 and the driven gear 3 are arranged below the driving module 5. When the driving gear 4 is driven by the driving module 5, the driven gear 3 is driven to rotate, thereby driving the cutting device 2 to perform the filament cutting operation.

[0014] Optionally, the shearing device 2 is a disc shearing device.

[0015] Optionally, the wear-resistant sleeve A4 is made of ceramic material.

[0016] Optionally, the filament passes through the wear-resistant sleeve A4 at the short end of the detection lever A2 and the cutting device 2 below. Due to the force of the filament, the long end of the detection lever A2 is constrained outside the detection range of the photoelectric sensor A3. At this time, the light receiver of the photoelectric sensor A3 can receive the light beam from the light transmitter and is in a closed state, and the filament participates in spinning normally; when the filament is broken, the long end of the detection lever A2 loses the constraint of the filament, and moves downward to the detection range of the photoelectric sensor A3 under the action of its own gravity, blocking the reception of the light beam, so that the photoelectric sensor A3 is in a disconnected state, thereby sending a yarn break signal to the spinning machine, and the spinning machine cuts the corresponding yarn; and when the contact-type yarn break sensor detects that the yarn is broken, it will send a wire break signal and transmit it to the drive module 5. After receiving the wire break signal, the drive module 5 drives the driving gear 4 below to rotate, and the driving gear 4 drives the driven gear 3 to rotate, and the driven gear 3 drives the cutting device 2 to perform the cutting operation.

[0017] A second object of the present invention is to provide a spinning machine comprising the yarn cutting device with broken yarn detection function.

[0018] The beneficial effects of the present invention are:

[0019] The present application provides a yarn cutting device with a broken yarn detection function, which is interconnected with a contact-type broken yarn sensor through a cutting device. When the broken yarn detection part detects that the filaments or staple fibers are broken, a broken yarn signal is sent to the spinning device, and the spinning device cuts the corresponding yarn; when the contact-type broken yarn sensor detects that the yarn is broken, a broken yarn signal is sent and transmitted to the driving module. Once the driving module receives the broken yarn signal from the contact-type broken yarn sensor, it drives the driving gear to drive the driven gear to rotate, thereby driving the cutting device to immediately cut the filaments, avoiding waste of raw materials, and ensuring the quality of the composite yarn while ensuring production efficiency, greatly reducing the adverse effects of broken yarn on production and yarn quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of the overall structure of a yarn cutting device with a broken yarn detection function provided by the present invention;

[0022] Figure 2 A schematic structural diagram of a yarn break detection portion of a yarn cutting device with a broken yarn detection function provided by the present invention;

[0023] Figure 3 A schematic diagram of the yarn position when the yarn cutting device with broken yarn detection function provided by the present invention is working;

[0024] In the figure: 1. Broken wire detection part; 2. Cutting device; 3. Driven gear; 4. Driving gear; 5. Driving module; 6. Frame; A1. Support frame; A2. Detection lever; A3. Photoelectric sensor; A4. Ceramic wear-resistant sleeve. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Embodiment 1

[0027] This embodiment provides a yarn cutting device with a broken yarn detection function, such as Figure 1 and Figure 2 As shown, it includes a broken wire detection part 1, a cutting device 2, a driven gear 3, a driving gear 4, a driving module 5 and a frame 6, and the broken wire detection part 1, the cutting device 2, the driven gear 3, the driving gear 4, and the driving module 5 are all fixed on the frame 6;

[0028] The broken wire detection part 1 includes: a support frame A1, a detection lever A2, a photoelectric sensor A3 and a wear-resistant sleeve A4, wherein the support frame A1 is used to provide a support point for the detection lever A2, so that the two ends of the detection lever A2 have different up and down relationships depending on whether the filament is broken, and the photoelectric sensor A3 is used to realize broken wire detection according to the different up and down relationships between the two ends of the detection lever A2.

[0029] The cutting device 2 is located directly below the broken wire detection part 1 to ensure that the filament can pass through the broken wire detection part 1 and the cutting device 2; the cutting device 2 is a disc shearing device, and the specific structure is described in CN117802640A, an inductive yarn cutting system with tension compensation.

[0030] The lower part of the shearing device 2 is connected to the driven gear 3, so as to ensure that the driven gear 3 drives the shearing device 2 to perform the shearing operation; the driven gear 3 is meshed with the driving gear 4 in the horizontal direction; the driving gear 4 is arranged below the driving module 5 to realize the transmission of power between the driving module 5 and the driven gear 3.

[0031] The broken wire detection part 1 includes a support frame A1, a detection lever A2, a photoelectric sensor A3 and a wear-resistant sleeve A4; the photoelectric sensor A3 includes a light transmitter and a light receiver, which are respectively arranged on two opposite supports on the frame 6; the detection lever A2 is divided into a long end and a short end by the support frame A1, and the length ratio of the long end to the short end is 3:2, and a wear-resistant sleeve A4 is arranged at one end of the short end for the filament to pass through; the long end is located within or outside the monitoring range of the photoelectric sensor A3 according to whether the filament in the wear-resistant sleeve A4 at the short end is broken, so as to achieve whether the light signal is blocked. When working normally, the force that constrains the long end to make it outside the monitoring range of the photoelectric sensor A3 is in the range of 10 to 100 cN, which is sufficient to provide a force within this range when the filament is not broken.

[0032] The wear-resistant sleeve A4 is made of wear-resistant material, such as ceramic, metal or polymer. Considering that the yarn break detection device in the device is based on the gravity difference between the long end and the short end of the detection lever, technicians are required to select a wear-resistant sleeve of suitable material according to specific circumstances.

[0033] The device is interconnected with the contact-type yarn break sensor; when it is detected that the filament is broken, the photoelectric sensor A3 sends a yarn break signal which is transmitted to the spinning device, and the spinning device performs the yarn cutting operation; when the contact-type yarn break sensor detects the yarn break, it sends a yarn break signal and transmits it to the driving module 5, and after receiving the yarn break signal, the driving module 5 drives the driving gear 4 to drive the driven gear 3 to rotate, thereby driving the cutting device 2 to perform the filament cutting operation.

[0034] like Figure 3 As shown, Figure 3 a is the position where the filament passes through and the state of the device when the device is working normally. Figure 3In the figure b, the state of the device is when the filament is disconnected; when the spinning equipment works normally, the filament passes through the ceramic wear-resistant sleeve A4 at the short end of the detection lever A2 and the shearing device 2 below. Due to the force of the filament, the long end of the detection lever A2 is constrained outside the detection range of the photoelectric sensor A3. At this time, the light receiver of the photoelectric sensor A3 can receive the light beam from the light transmitter and is in a closed state, and the filament participates in spinning normally; when the filament is disconnected, the long end of the detection lever A2 loses the constraint of the filament and moves downward to the light range of the photoelectric sensor A3 under the action of its own gravity. The light beam is blocked between the transmitter and the light receiver, so that the photoelectric sensor A3 is in a disconnected state, thereby sending out a yarn break signal and transmitting it to the spinning machine, which then performs the yarn cutting operation. When the contact yarn break sensor detects that the yarn is broken, it sends out a wire break signal and transmits it to the drive module 5. After receiving the wire break signal, the drive module 5 drives the driving gear 4 below to rotate, and the driving gear 4 drives the driven gear 3 to rotate, and the driven gear 3 then drives the cutting device 2 to perform the cutting operation, thereby achieving timely cutting of the filaments and staple fibers when the yarn break is detected.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A yarn cutting device with broken yarn detection function, characterized in that: The device comprises: a broken wire detection part (1), a cutting device (2), a driven gear (3), a driving gear (4), a driving module (5) and a frame (6); the broken wire detection part (1), the cutting device (2), the driven gear (3), the driving gear (4) and the driving module (5) are all fixed on the frame (6); The broken wire detection part (1) comprises: a support frame (A1), a detection lever (A2), a photoelectric sensor (A3) and a wear-resistant sleeve (A4), wherein the support frame (A1) is used to provide a support point for the detection lever (A2), so that the two ends of the detection lever (A2) have different up-down relationships depending on whether the filament is broken, and the photoelectric sensor (A3) is used to realize broken wire detection according to the different up-down relationships between the two ends of the detection lever (A2).

2. The device according to claim 1, characterized in that The device is interconnected with a contact type yarn break sensor, and determines whether to perform a cutting operation according to whether the contact type yarn break sensor sends a broken yarn signal.

3. The device according to claim 2, characterized in that The photoelectric sensor (A3) comprises a light transmitter and a light receiver, which are respectively arranged on two opposite supports on the frame (6); the detection lever (A2) is divided into a long end and a short end by the support frame (A1), and a wear-resistant sleeve (A4) is arranged at one end of the short end for the filament to pass through; the long end is within or outside the monitoring range of the photoelectric sensor (A3) according to whether the filament in the wear-resistant sleeve (A4) at the short end is broken, so as to achieve whether the light signal is blocked.

4. The device according to claim 3, characterized in that The length ratio of the long end to the short end of the detection lever (A2) is 3:

2.

5. The device according to claim 4, characterized in that The shearing device (2) is located below the broken wire detection part (1), and the shearing device (2) is a disc-type shearing device.

6. The device according to claim 5, characterized in that The driving module (5) is used to receive a broken yarn signal from a contact-type broken yarn sensor and drive the driving gear (4) to rotate according to the broken yarn signal.

7. The device according to claim 6, characterized in that The driving gear (4) and the driven gear (3) are arranged below the driving module (5); when the driving gear (4) is driven by the driving module (5), it drives the driven gear (3) to rotate, thereby driving the shearing device (2) to perform a shearing operation.

8. The device according to claim 7, characterized in that The shearing device (2) is a disc-type shearing device.

9. The device according to claim 8, characterized in that The filament passes through the wear-resistant sleeve (A4) at the short end of the detection lever (A2) and the shearing device (2) below. Due to the force of the filament, the long end of the detection lever (A2) is constrained outside the detection range of the photoelectric sensor (A3). At this time, the light receiver of the photoelectric sensor (A3) can receive the light beam from the light transmitter and is in a closed state. The filament participates in spinning normally. When the filament is disconnected, the long end of the detection lever (A2) loses the constraint of the filament and moves downward to the photoelectric sensor (A3) under the action of its own gravity. A3) is within the detection range, blocking the reception of the light beam, so that the photoelectric sensor (A3) is in a disconnected state, thereby sending a yarn break signal to the spinning device, and the spinning device cuts the corresponding yarn; and when the contact-type yarn break sensor detects that the yarn is broken, it sends a broken yarn signal and transmits it to the driving module (5), and after receiving the broken yarn signal, the driving module (5) drives the driving gear (4) below to rotate, and the driving gear (4) drives the driven gear (3) to rotate, and the driven gear (3) then drives the cutting device (2) to perform the cutting operation.

10. A spinning machine, characterized in that: The spinning machine comprises the yarn cutting device with broken yarn detection function as described in any one of claims 1 to 8.

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