CN213538270U

CN213538270U - Weft insertion device suitable for automatic control

Info

Publication number: CN213538270U
Application number: CN202021959095.7U
Authority: CN
Inventors: 韦文泉; 孙立新; 徐佳明
Original assignee: Huzhou Hyundai Textile Machinery Co Ltd
Current assignee: Huzhou Hyundai Textile Machinery Co Ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-06-25
Anticipated expiration: 2030-09-09

Abstract

The utility model provides a weft insertion device suitable for automated control, the weft insertion structure includes the shuttle body and wooden foot, shuttle body sliding connection is between the wooden foot, the middle part of the shuttle body is equipped with the installation cavity, be connected with quill, its characterized in that in the installation cavity: the weft insertion structure further comprises a logic control unit, a driving motor and a tension detection unit which are arranged in the shuttle body, the driving motor and the tension detection unit are connected with the logic control unit, the driving motor is in transmission connection with the quill, and the tension detection unit is located on the outlet path of the quill and guides the yarns discharged by the quill. The utility model discloses an automatic wefting insertion provides comparatively perfect and arranges the framework to the shuttle body that the applicant applied for earlier is the basement, rationally retrencied the ground and chooseed relevant functional structure for use, and inside having all integrated it and installed the shuttle, has the basic whole outward appearance of shuttle, and effectively realize automatic detection and control, be worth using widely in this field.

Description

Weft insertion device suitable for automatic control

Technical Field

The utility model relates to a textile machinery technical field specifically is a weft insertion device suitable for automated control.

Background

The ribbon loom is a machine capable of weaving ribbons with various widths, is suitable for weaving various round or flat non-elastic and elastic ribbons, and is mainly used for weaving various high-quality products such as ribbons, shoelaces, elastic ribbons, decorative ribbons, high-tension ribbons, fishing net wires, sports ribbons, curtain ribbons, electric wires, fibers and the like. According to different specific weaving methods, the needle loom can be divided into a shuttle loom and a braider. The shuttle loom is divided into two types, namely a shuttleless loom and a shuttle loom. Although the shuttle-type ribbon loom has less application compared with a shuttleless ribbon loom, the shuttle-type ribbon loom still has larger installation usage in the industry, and even part of the shuttle-type ribbon loom technology is applied to the high-end technical fields of aerospace, artificial blood vessels and the like. But the traditional shuttle ribbon loom structure lacks the innovation, and its shuttle structure is comparatively old-fashioned, has the interference phenomenon during operation, and poor stability, the precision is low, and product quality is uneven. In contrast, through research and practice, the applicant specially designs a fully improved weft insertion device, that is, a non-interference high-stability weft insertion device for a ribbon loom disclosed in patent document No. CN201821310179.0, which includes a shuttle body, a weft leading-out component connected to the shuttle body, and a weft pullback component cooperating with the weft leading-out component to guide and route together, wherein two installation channels are provided in the shuttle body, at least one of the installation channels is provided on two sides of the shuttle body, and the weft pullback component is provided in the installation channel; the middle part of the shuttle body is provided with an installation cavity, a quill fixing component is detachably installed in the installation cavity, and a communicated weft drift diameter is arranged between the installation cavity and the weft leading-out component. The dismouting of subassembly, regulation are comparatively easy convenient in this scheme, walk the line and correspond structural design optimization, and easily manufacturing, weft is difficult for taking place to interfere and smooth and easy in the stroke, and difficult emergence friction is impaired, all brings effective improvement to meshbelt quality and device life-span.

However, there is still a place to be improved because the tension and the size of the weft insertion outlet are adjusted only by the operation experience of the worker, so that the stability and the precision are still not good enough, and the production requirement in the field of high-end products is difficult to meet. In contrast, the conventional loom, whether having a shuttle or not, starts to combine with automatic control to realize a working mode which does not completely depend on manual adjustment, for example, in the shuttleless loom, the thickness, the number of twists, the weft insertion angle and the like of the yarn are detected and programmed; in the shuttle loom, the position of the shuttle, the rotation of the quill, the tension of the yarn, the yarn output amount and the like are detected and programmed. The automatic control is to get rid of the limitation that the traditional weaving machine needs to depend on operators with deep experience, and the closed-loop automatic control is achieved through real-time information detection and feedback, so that the thread breakage rate can be reduced, and the weaving efficiency and quality can be improved. However, in the shuttle loom, such automatic control is realized by using a large number of detection units, the existing weft insertion device is not perfect, and the specific selection and setting of the detection units and how to reasonably arrange the detection units are one of the subjects worth of research in the field of automatic control of the shuttle loom at present.

SUMMERY OF THE UTILITY MODEL

A technical object of the utility model is to provide a weft insertion device suitable for automated control solves the structural design and the planning of the weft insertion device that is applicable to automated control among the current shuttle loom and perfect reasonable problem inadequately.

The utility model discloses a concrete technical scheme as follows: the utility model provides a weft insertion device suitable for automated control, the weft insertion structure includes the shuttle body and wooden foot, shuttle body sliding connection is between the wooden foot, the middle part of the shuttle body is equipped with the installation cavity, be connected with quill, its characterized in that in the installation cavity: the weft insertion structure further comprises a logic control unit, a driving motor and a tension detection unit which are arranged in the shuttle body, the driving motor and the tension detection unit are connected with the logic control unit, the driving motor is in transmission connection with the quill, the tension detection unit is located on the outlet path of the quill and guides the yarns discharged by the quill, the tension detection unit is used for detecting the tension of the guided yarns, and the logic control unit is used for receiving and processing detection signals of the detection unit.

Preferably, the tension detecting unit includes a guide tension wheel and a tension sensor, the shuttle body is provided with an installation cavity corresponding to the guide tension wheel and the tension sensor, and the yarn fed from the quill passes around the guide tension wheel and the tension sensor.

Preferably, the weft insertion structure further comprises a quill rotation detection unit installed in the shuttle body, the quill rotation detection unit is connected with the logic control unit, and the quill rotation detection unit is used for detecting the number of rotation turns of the end of the quill.

Preferably, the quill rotation detecting unit comprises a signal processing part and a coding signal part connected with the signal processing part, an installation inner cavity corresponding to the signal processing part is arranged in the shuttle body, and the coding signal part is connected with the end part of the quill and records the rotation signal of the quill.

Preferably, the weft insertion structure further comprises a shuttle displacement detection unit installed in the shuttle, the shuttle displacement detection unit is connected with the logic control unit, and the shuttle displacement detection unit is used for detecting the displacement of the shuttle.

Preferably, the shuttle displacement detecting unit includes a displacement sensor or a displacement encoder.

Preferably, the weft insertion structure further comprises a thread take-off length detecting unit installed in the shuttle body, the thread take-off length detecting unit is located on a thread take-off path of the quill and guides the thread let-off by the quill, and the thread take-off length detecting unit is used for detecting the length of the guided thread.

Preferably, the yarn outgoing length detecting unit comprises a friction wheel and a reading encoder connected with the friction wheel, the yarn fed out by the quill winds around the friction wheel and drives the friction wheel to rotate, and the reading encoder records a rotation signal of the friction wheel.

Preferably, the weft insertion structure further comprises a power supply installed in the shuttle body for supplying power to the logic control unit and each detection unit.

Preferably, the weft insertion structure further comprises a charging mechanism for charging the power supply, and the charging mechanism is arranged on the wooden foot.

The technical advantages of the utility model reside in the weft insertion device provides comparatively perfect arrangement framework for automatic weft insertion to the shuttle body that the applicant applied for earlier is the basement, rationally retrencies to choose relevant functional structure for use, and has all integrated inside having installed the shuttle with it, has kept the basic whole outward appearance of shuttle, and effectively realizes automatic detection and control, is worth using widely in this field.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 3 is a schematic partial structure diagram of an embodiment of the present invention;

fig. 4 is a schematic partial structure diagram of an embodiment of the present invention;

the names of the parts corresponding to the numbers in the figure are respectively: 1-shuttle body, 2-wood foot, 3-quill, 4-logic control unit, 5-driving motor, 6-tension detection unit, 7-quill rotation detection unit, 8-shuttle body displacement detection unit, 9-outlet length detection unit and 10-power supply.

Detailed Description

The invention will be further explained by means of specific embodiments with reference to the drawings, in which:

referring to fig. 1 and 2, an embodiment of a weft insertion device suitable for automatic control comprises a shuttle body 1 and wooden feet 2, wherein the shuttle body 1 is in a spindle shape, the shuttle body 1 is slidably connected between the wooden feet 2, namely, a linear sliding groove is formed in the upper surface and the lower surface of the shuttle body 1 close to the back to be in butt joint with a sliding rail of the wooden feet 2, an installation cavity is formed in the middle of the shuttle body 1, and a quill 3 is connected in the installation cavity. The weft insertion device also comprises a logic control unit 4, a driving motor 5, a tension detection unit 6, a quill rotating detection unit 7, a shuttle body displacement detection unit 8, an outgoing line length detection unit 9 and a power supply 10 for supplying power to the logic control unit 4 and each detection unit, wherein the logic control unit 4, the driving motor 5, the tension detection unit 6, the quill rotating detection unit 7, the shuttle body displacement detection unit 8 and the outgoing line length detection unit 9 are all connected with the logic control unit 4. The logic control unit 4, i.e. the control processor, and each detection unit has a corresponding installation cavity in the shuttle body 1, the specific distribution mode can be determined according to the actual situation, in this embodiment, taking fig. 1 of the top view as an example, taking the quill 3 and the installation cavity in the middle of the shuttle body 1 as a reference, the tension detection unit 6 and the outgoing length detection unit 9 are located in front of the quill 3 (the relative sequence of the tension detection unit 6 and the outgoing length detection unit 9 can be interchanged), the power source 10 is located behind the quill 3, the logic control unit 4 is located at the left side of the quill 3, the driving motor 5 is located at the right side of the quill 3, the quill rotation detection unit 7 is located in front of the quill 3 and located at the left sides of the tension detection unit 6 and the outgoing length detection unit 9, the shuttle displacement detection unit 8 is located behind the quill 3 and located at the right side of the power source 10, such a distribution mode allows each part of the structure to have enough installation space, do not interfere with each other.

The driving motor 5 is engaged with the quill 3 through a transmission gear, and in some embodiments, a clamping groove is formed at an output end of the driving motor 5 instead of the manner of engaging and connecting the transmission gear, and one end of the quill 3 is clamped into the clamping groove.

The tension detecting unit 6 is located on the outgoing path of the quill 3 and guides the yarn fed out by the quill to detect the tension of the guided yarn, in this embodiment, the tension detecting unit 6 includes two guide tension wheels and two tension sensors, and is installed and fixed in the inner cavity of the shuttle body 1 in front of the quill 3, and the tension sensors are located between the two guide tension wheels, as shown in fig. 3.

The quill rotation detecting unit 7 is used to detect the number of rotations of the end of the quill 3. In this embodiment, the quill rotation detecting unit 7 includes a signal processing part and a coding signal part, the signal processing part is installed and fixed in the corresponding inner cavity of the shuttle 1 to receive the signal from the coding signal part and transmit the signal to the logic control unit 4, the coding signal part is installed on the disks at the two ends of the quill 3 to measure the rotation signal of the quill 3, and the coding signal part adopts a grating form, or alternatively a magnetic induction form.

The shuttle displacement detecting unit 8 is used for detecting the displacement amount relative to a certain reference position on the wooden foot 2. In this embodiment, the shuttle displacement detecting unit 8 may select a displacement sensor or an encoder such as a proximity switch or a grating ruler encoder, and the sensing detecting portion matched with the main body portion such as the proximity switch or the grating ruler encoder in the shuttle 1 may be disposed on the wooden foot 2 or a rack (e.g., a wooden foot mounting beam of the rack) where the wooden foot 2 is located.

The thread take-out length detecting unit 9 is located on the thread take-out path of the quill 3 and guides the thread let out by the quill to detect the length of the guided thread. In this embodiment, the outlet length detecting unit 9 includes two friction wheels and an encoder connected to the friction wheels, the two friction wheels clamp the yarn, the yarn drives the friction wheels to rotate, so that the connected encoder generates pulses and feeds the pulses back to the logic control unit, and the logic control unit converts the pulses into corresponding outlet lengths, as shown in fig. 4.

Further, the weft insertion device is also provided with a charging mechanism for charging the power supply 10, the charging mechanism is arranged on the wooden foot 2, the charging mechanism and the power supply 10 can be in wired or wireless connection, when the shuttle body 1 finishes working and normally stops at a certain preset position on the wooden foot, namely, the wooden foot 2 at the position (upper wooden foot and lower wooden foot) is respectively provided with a positive electrode and a negative electrode to charge the power supply 10, or the wooden foot 2 at the position is provided with a wireless charging module to wirelessly charge the power supply 10.

For the weft insertion device, the sequential weft lifting and the weft insertion method which is suitable for the weft insertion device and is automatically controlled, the weft insertion device has two weft insertion modes of closed-loop control, namely

The passive weft discharging mode is applicable to the condition that the yarn is low in elasticity, compact, not easy to break and relatively low in quality requirement of woven products:

in the current weft insertion process, the logic control unit 4 does not control the driving motor 5 according to the feedback information of each detecting unit, but only draws the yarn of the quill by the normal reciprocating motion of the shuttle body 1.

After the next weft insertion is finished, the yarn tension needs to be properly controlled, the logic control unit 4 controls the driving motor 5 according to the real-time yarn tension fed back by the tension detection unit 6, specifically, if the real-time yarn tension exceeds the preset standard range, the driving motor 5 rotates forwards to drive the quill 3 to rotate forwards, and more yarns are discharged to enable the real-time yarn tension to return to normal; if the real-time tension of the yarn is not within the preset standard range, the driving motor 5 rotates to drive the quill 3 to rotate, and the redundant yarn is withdrawn to enable the real-time tension of the yarn to return to be normal; if the real-time tension of the yarn is within the preset standard range, the driving motor 5 does not need to rotate;

then the logic control unit 4 controls the driving motor 5 according to the yarn outlet amount fed back by the yarn outlet length detection unit 9 at the moment, specifically, if the yarn outlet amount exceeds the preset standard range, the driving motor 5 rotates to drive the quill 3 to rotate to withdraw the redundant yarn, but at the same time, the real-time tension of the yarn fed back by the tension detection unit 6 is required to be within the preset standard range, and when the continuous withdrawal of the redundant yarn causes the real-time tension of the yarn to exceed the preset standard range, the driving motor 5 is turned off; if the yarn outlet amount is not within the preset standard range, the driving motor 5 rotates forwards to drive the quill 3 to rotate forwards to discharge more yarns, but the real-time tension of the yarns fed back by the tension detection unit 6 is required to be within the preset standard range, and when the yarn is continuously discharged, the real-time tension of the yarns is not within the preset standard range, the driving motor 5 is stopped; if the yarn discharge amount is within the preset standard range, the driving motor 5 does not need to rotate.

Secondly, an active weft outlet mode is adopted, the yarn has certain elasticity, is easy to break when leading, and has relatively high quality requirement on woven products:

in the secondary weft insertion process, the logic control unit 4 controls the driving motor 5 to drive the quill 3 to actively release the yarns while the shuttle body 1 reciprocates to pull the yarns so as to keep the real-time tension of the yarns within a reasonable range, reduce the yarn breakage rate and improve the fabric quality; the active thread output amount of each weft insertion process has a preset value, the preset value can be measured and recorded through a pre-test, a fixed value with an error within an acceptable range is obtained, correspondingly, the real-time thread output amount when the shuttle body 1 moves to a certain position in each weft insertion process is also a related value, namely the real-time thread output amount is equal to the proportion of the active thread output amount multiplied by the real-time stroke of the shuttle body 1 to the total stroke, and the position information of the shuttle body 1 can be measured in real time through the shuttle body displacement detection unit 8; and because the quill 3 is always paying off, the radius of the coil on the quill is gradually reduced, in each weft insertion process, theoretically, to achieve the same active thread discharging amount, the total number of turns of the quill 3 or the total rotation angle of the driving motor 5 needs to be gradually increased, and for the convenience of realizing control, the active thread discharging amount of each weft insertion is set to be referenced by the coil radius at the beginning of weft insertion, on the basis, in each weft insertion, the active thread discharging amount is measured and recorded through a pre-test, when the active outgoing amount is reached, the corresponding relation between the total rotating angle of the driving motor 5 and the corresponding coil radius at the beginning of each weft insertion is realized, so that in the single weft insertion process, when the shuttle body 1 moves to a certain position, the real-time rotating angle required to be rotated by the driving motor 5 is equal to the total rotating angle of the driving motor 5 corresponding to the weft insertion process at this time multiplied by the proportion of the real-time stroke of the shuttle body 1 to the total stroke; the quill rotation detecting unit 7 may detect the accumulated rotation amount of the quill 3, and may also obtain the corresponding relationship between the accumulated rotation amount and the coil radius through the measurement and recording of a pre-test, and the total rotation angle required by the driving motor 5 in the single weft insertion process may also be obtained through the direct detection result fed back by the quill rotation detecting unit 7 according to the above explanation;

after the secondary weft insertion is finished, the logic control unit 4 controls the driving motor 5 according to the real-time yarn tension fed back by the tension detection unit 6, specifically, if the real-time yarn tension is larger than a preset standard value, the driving motor 5 rotates forwards to drive the quill 3 to rotate forwards, and more yarns are discharged to enable the real-time yarn tension to return to normal; if the real-time tension of the yarn is smaller than a preset standard value, the driving motor 5 rotates to drive the quill 3 to rotate, and redundant yarn is withdrawn to enable the real-time tension of the yarn to return to be normal; if the real-time tension of the yarn is equal to a preset standard value, the driving motor 5 does not need to rotate;

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The purpose of the utility model is completely and effectively realized. The functional and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention can be modified or altered without departing from the principles.

Claims

1. The utility model provides a weft insertion device suitable for automated control, the weft insertion structure includes shuttle (1) and wood foot (2), shuttle (1) sliding connection is between wood foot (2), the middle part of shuttle (1) is equipped with the installation cavity, be connected with quill (3) in the installation cavity, its characterized in that: the weft insertion structure further comprises a logic control unit (4), a driving motor (5) and a tension detection unit (6) which are installed in the shuttle body (1), the driving motor (5) and the tension detection unit (6) are all connected with the logic control unit (4), the driving motor (5) is in transmission connection with the quill (3), and the tension detection unit (6) is located on an outlet path of the quill (3) and guides yarns discharged by the quill (3).

2. Weft insertion device suitable for automated control according to claim 1, characterized in that: the tension detection unit (6) comprises a guide tension wheel and a tension sensor, an installation inner cavity corresponding to the guide tension wheel and the tension sensor is arranged in the shuttle body (1), and the yarn discharged by the quill (3) passes around the guide tension wheel and the tension sensor.

3. Weft insertion device suitable for automated control according to claim 1, characterized in that: the weft insertion structure further comprises a quill rotation detection unit (7) installed in the shuttle body (1), and the quill rotation detection unit (7) is connected with the logic control unit (4).

4. A weft insertion device adapted for automated control according to claim 3, characterized in that: the quill rotates detecting element (7) and includes signal processing portion and connects the code signal portion of signal processing portion, be equipped with in the shuttle body (1) with the corresponding installation inner chamber of signal processing portion.

5. Weft insertion device suitable for automated control according to claim 1, characterized in that: the weft insertion structure further comprises a shuttle body displacement detection unit (8) arranged in the shuttle body (1), and the shuttle body displacement detection unit (8) is connected with the logic control unit (4).

6. Weft insertion device suitable for automated control according to claim 5, characterized in that: the shuttle displacement detection unit (8) comprises a displacement sensor or a displacement encoder.

7. Weft insertion device suitable for automated control according to claim 1, characterized in that: the weft insertion structure further comprises an outlet length detection unit (9) arranged in the shuttle body (1), wherein the outlet length detection unit (9) is positioned on the outlet path of the quill (3) and guides the yarn discharged from the quill (3).

8. Weft insertion device suitable for automated control according to claim 7, characterized in that: the outgoing length detection unit (9) comprises a friction wheel and a reading encoder connected with the friction wheel, and yarns emitted by the quill (3) pass through the friction wheel and drive the friction wheel to rotate.

9. Weft insertion device suitable for automated control according to claim 1, characterized in that: the weft insertion structure also comprises a power supply (10) which is arranged in the shuttle body (1) and is used for supplying power to the logic control unit (4) and each detection unit.

10. Weft insertion device suitable for automated control according to claim 9, characterized in that: the weft insertion structure further comprises a charging mechanism for charging the power supply (10), and the charging mechanism is arranged on the wooden foot (2).