Electronic jacquard shedding device of circular weaving machine

Abstract

The invention discloses an electronic jacquard shedding device of a circular weaving machine, which comprises a weft insertion module comprising a plurality of weft insertion shuttle driving devices and a photoelectric sensor used for monitoring the real-time position of a shuttle; the electronic jacquard opening module comprises an electronic jacquard assembly and a main control logic unit for controlling the electronic jacquard assembly; the rack module is used for bearing the weft insertion module and the electronic jacquard opening module; a plurality of electronic jacquard shedding devices of the circular weaving machine are sequentially arranged and connected along the circumference, during working, when any shuttle runs to a sensing area of the photoelectric sensor, the photoelectric sensor sends a signal to the main control logic unit, and the main control logic unit receives the signal to control the corresponding electronic jacquard component to act. By introducing a shuttle position sensing mechanism and modular jacquard control logic, accurate synchronous linkage of'opening-weft insertion 'actions is realized, a control system and a jacquard execution module are effectively decoupled, and the control system has the technical advantages of high structural universality, quick opening response and high operation stability.

Description

Technical Field

[0001] This invention relates to a shedding device for a circular loom with electronic control, belonging to the technical field of shedding mechanisms for circular looms. Background Technology

[0002] A circular loom is a textile machine widely used for weaving tubular fabrics. Its shedding mechanism is a key component for realizing the introduction of weft yarns and the interlacing of warp yarns. Traditional circular looms have two shedding methods: cam-type shedding and disc-type shedding. Cam-type shedding looms account for a large proportion. Regardless of whether a grooved cam (Chinese Utility Model Patent ZL01260524.7) or a flat cam (Chinese Utility Model Patent ZL200820133947.X) is used, the shedding motion is determined by the profile of the shedding cam and is fixed. Therefore, this type of cam-type circular loom can only weave simple, regular fabric structures and cannot weave complex structures or three-dimensional tubular fabrics. Disc-type shedding is generally used for warp shedding in fire hose circular looms. The fabric structures produced by these two shedding methods are simple, and can only be single-layer plain weave fabrics. Chinese invention patent CN102268761A discloses an "electromagnetically controlled circular loom shedding mechanism," which consists of a heddle-lifting actuator and a heddle-lifting control mechanism. The heddle-lifting actuator includes a cam and a slider synchronized with the shuttle movement. The combined action of the heddle-lifting actuator and the heddle-lifting control mechanism controls the shedding of the warp yarns, enabling the weaving of single-layer and multi-layer three-dimensional tubular fabrics that meet the requirements. However, in this shedding mechanism, the warp yarns must first be selected by the heddle-lifting actuator, i.e., the shedding cam, to its highest position, and then by the heddle-lifting control mechanism. The selected heddle yarns remain at the top, while the rest return to the lowest point with the cam's return profile, thus driving the warp yarns in the heddle eye to complete one shedding movement. The shuttle movement must be accurately coordinated with the cam movement; otherwise, the shuttle may not be able to pass smoothly through the weave, or even cause production accidents such as shuttle jamming, yarn breakage, and misalignment, seriously affecting equipment stability and product quality. Summary of the Invention

[0003] The technical problem to be solved by this invention is the problem of high rigidity and poor fault tolerance caused by the asynchronous operation of the shedding action and the shuttle movement in existing electromagnetic jacquard circular looms.

[0004] To address the aforementioned technical problems, the present invention provides an electronic jacquard shedding device for a circular loom, comprising: The weft insertion module includes multiple weft insertion and shuttle driving devices arranged at equal intervals along the circumference and photoelectric sensors for monitoring the real-time position of the shuttle. The electronic jacquard opening module includes an electronic jacquard assembly and a main control logic unit for controlling the electronic jacquard assembly. The heddles in the electronic jacquard assembly pass through the eye plate and are connected to one end of the return spring. The other end of the return spring is connected and fixed to the return spring fixing plate. The heddles are provided with heddle eyes. The return spring is used to provide a reset spring force after the jacquard action is completed to maintain the stable tension of the heddles.

[0005] The frame module for supporting the weft insertion module and the electronic jacquard opening module includes legs, a door ring for fixing the weft insertion shuttle device, a heddle spring fixing plate, a heddle plate, a door ring, and the two sides of the electronic jacquard assembly are respectively connected to two adjacent legs. Multiple circular loom electronic jacquard shedding devices are arranged and connected in sequence along the circumference. During operation, when any shuttle runs to the sensing area of ​​the photoelectric sensor, the photoelectric sensor sends a signal to the main control logic unit. Upon receiving the signal, the main control logic unit controls the corresponding electronic jacquard components to operate.

[0006] Preferably, the photoelectric sensors are periodically and evenly distributed on the corresponding weft insertion and shuttle driving devices, and the sensing areas of all photoelectric sensors cover the shuttle's travel path.

[0007] Preferably, the electronic jacquard components are configured in a one-to-one correspondence with the main control logic unit, that is, each electronic jacquard component is controlled independently.

[0008] Preferably, the support leg has a top foot at the top and a bottom foot at the bottom.

[0009] Preferably, the outrigger is composed of multiple horizontal and vertical outrigger tendons spliced ​​together.

[0010] More preferably, a corner brace is provided below the connection point of the transverse and longitudinal support tendons.

[0011] More preferably, the two ends of the heddle spring fixing plate are connected to the support legs via heddle spring fixing plate feet; the two ends of the door ring are connected to the support legs via door ring connectors; the two ends of the eyepiece are connected to the support legs via eyepiece feet; and the two sides of the electronic jacquard assembly are connected to the support legs via feet A and feet B, respectively.

[0012] Furthermore, the support leg is provided with a door ring pad for installing the door ring connector.

[0013] Preferably, the structure is divided into an upper-mounted structure and a lower-mounted structure according to the installation position of different electronic jacquard components. In the lower-mounted structure, the heddle spring fixing plate, the eye plate, and the electronic jacquard components are located at the upper, middle, and lower parts of the support leg, respectively, and the door ring and the eye plate are set on the same horizontal plane. In the upper-mounted structure, the electronic jacquard components, the eye plate, and the heddle spring fixing plate are located at the upper, middle, and lower parts of the support leg, respectively, and the door ring and the eye plate are set on the same horizontal plane.

[0014] More preferably, in the lower-mounted structure, the two sides of the support leg are respectively provided with mounting side plate A and mounting side plate B for connecting with drag foot A and drag foot B; in the upper-mounted structure, drag foot A and drag foot B are directly connected to the corresponding support leg.

[0015] This invention provides a jacquard shedding device for circular looms suitable for electronic control. The jacquard shedding mechanism includes: a photoelectric sensor for detecting the shuttle's running position, a main control logic unit for controlling the jacquard movement, an electronic jacquard assembly, and supporting structural components such as heddles, a weft plate, and a support frame. During operation, the shuttle runs along a set track. Each time it passes through a certain area, the corresponding sensor detects its position in real time and sends a signal to the main control logic unit. The control unit immediately drives the corresponding electronic jacquard assembly based on this signal, causing the heddles to complete one shedding action, thus providing an accurate path for the shuttle. As the shuttle runs continuously, each sensor responds sequentially, achieving a dynamic closed-loop linkage between the jacquard movement and the shuttle's movement.

[0016] This invention introduces a control mechanism that is dynamically linked to the shuttle's running state, enabling the warp yarn shedding timing to be adjusted in real time according to the actual running position of the shuttle, thereby ensuring a high degree of matching between the shedding action and the shuttle's running.

[0017] Compared with the traditional method of controlling jacquard movements through preset timing programs, the present invention constructs a closed-loop control structure of "perception-judgment-execution", which enables the opening movement to have real-time response capability, can adapt to small deviations in the shuttle operation process, and significantly improves the stability and fault tolerance of the system.

[0018] This invention, as an shedding module for a circular loom, allows the number of shedding modules to be arbitrarily selected according to the fold diameter of the fabric to be woven by the circular loom. This eliminates the problem of the fabric fold diameter being constrained by the shedding cam in the original loom, as well as the problem of ensuring that the movement of the shedding cam and the shuttle movement must be synchronized. In other words, it improves the adaptability of the weaving equipment and the robustness of the system.

[0019] The jacquard shedding device for electronically controlled circular looms provided by this invention has a reasonable structure and sensitive response, making it particularly suitable for applications in complex production environments. This mechanism not only improves the flexibility of the shedding and shuttle movement coordination but also reduces downtime and product defect rates caused by system timing deviations, demonstrating broad application prospects and significant industrial value. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the bottom-mounted circular loom electronic jacquard sheathing device provided in Example 1; Figure 2 This is a schematic diagram of the support leg structure in Example 1; Figure 3This is a top view showing the overall shuttle position embedding relationship of the circular loom jacquard system in this invention; Figure 4 This is a schematic diagram illustrating the relative motion relationship between the shuttle and the photoelectric sensor in this invention. Figure 5 This is a schematic diagram of the structure of the electronic jacquard sheathing device for the top-mounted circular loom provided in Example 2. Detailed Implementation

[0021] To make the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0022] Example 1 This invention provides an electronic jacquard shedding device for circular looms. The device has a compact structure, can flexibly adapt to different types of electronic jacquard control methods, and can achieve real-time synchronous linkage with the shuttle running status.

[0023] Depending on the installation method of the electronic jacquard assembly, this embodiment provides a bottom-mounted electronic jacquard opening device, such as... Figure 1 As shown, it includes: The weft insertion module includes multiple weft insertion and shuttle driving devices 8 arranged at equal intervals along the circumference and a photoelectric sensor 7 for monitoring the real-time position of the shuttle 10. The electronic jacquard opening module includes an electronic jacquard assembly 15 and a main control logic unit 15 for controlling the electronic jacquard assembly 15. The heddle wire 5 in the electronic jacquard assembly 15 passes through the eye plate 12 and is connected to one end of the return spring 2. The eye plate 12 is used for guiding the warp yarn. The other end of the return spring 2 is connected and fixed to the return spring fixing plate 1. The heddle wire 5 is provided with heddle eye 6. The frame module for supporting the weft insertion module and the electronic jacquard opening module includes support legs 4, a door ring 11 for fixing the weft insertion shuttle drive device 8, a return spring fixing plate 1, a head plate 12, a door ring 11, and the two sides of the electronic jacquard assembly 15 are respectively connected to two adjacent support legs 4.

[0024] The photoelectric sensors 7 are periodically and evenly distributed on the corresponding weft insertion and shuttle drive devices 8, and the sensing areas of all photoelectric sensors 7 cover the travel path of the shuttle 10. In this embodiment, a photoelectric sensor 7 is provided on each of the two weft insertion and shuttle drive devices 8 spaced two spaces apart, that is, a photoelectric sensor 7 is provided every three weft insertion and shuttle drive devices 8. The sensing head of the photoelectric sensor 7 is set vertically downward, and the sensing area is aligned with the shed slot area of ​​the weft insertion and shuttle drive device 8 directly below it. When the shuttle 10 runs to the sensing area, the photoelectric sensor 7 collects a signal to identify the arrival status of the shuttle 10. The electronic jacquard components 15 are set in a one-to-one correspondence with the main control logic unit 13, that is, each electronic jacquard component 15 is controlled independently.

[0025] The weft insertion and shuttle driving device 8 can be a commercially available weft insertion box or a weft insertion and shuttle driving device designed by the inventor. This device includes a gear shaft driven by a motor, connected to a support. Each end of the gear shaft has an outer guide wheel, and each of the two outer guide wheels has an inner guide wheel on its inner side. The two inner guide wheels are connected to the support via an upper guide wheel shaft and a lower guide wheel shaft, respectively. During shuttle driving, all gear shafts are driven by the motor to rotate synchronously in the same direction. The upper and lower sides of the shuttle are positioned between the corresponding inner and outer guide wheels, and the teeth on the gear shaft mesh with the arc-shaped rack on the back of the shuttle. The upper guide wheel shaft is connected to a knob on the upper plate via a pin. The upper guide wheel shaft is eccentrically connected to the inner guide wheel. Rotation of the knob adjusts the height of the upper inner guide wheel and the distance between the inner guide wheel and the corresponding outer guide wheel. All weft insertion and shuttle driving devices 8 are arranged sequentially, and the support of the weft insertion and shuttle driving device 8 is connected and fixed to the door ring 11.

[0026] like Figure 2 As shown, the support leg 4 is constructed by splicing together multiple transverse and longitudinal support ribs 42. In this embodiment, the support leg 4 includes three longitudinal support ribs 42, with the middle support rib 42 having the highest point at its top, where a support top foot 41 is provided. The bottom ends of the two side support ribs 42 extend to the ground, each with a support bottom foot 46. An angle brace plate 47 is provided below the connection point of the transverse and longitudinal support ribs 42 to improve the overall strength of the support leg 4. The support leg 4 is provided with a door ring pad 43 for installing the door ring connector 9. The two ends of the heddle spring fixing plate 1 are connected to the support leg 4 via the heddle spring fixing plate drag 3; the two ends of the door ring 11 are connected to the door ring pad 43 on the support leg 4 via the door ring connector 9; the two ends of the eye plate 12 are connected to the support leg 4 via the eye plate drag 17; the two sides of the electronic jacquard assembly 15 are connected to the mounting side plate A 44 and mounting side plate B 45 on the support leg 4 via drag A 14 and drag B 16 respectively.

[0027] The heddle spring fixing plate 1, the eye plate 12, and the electronic jacquard assembly 15 are located at the upper, middle, and lower parts of the support leg 4, respectively, and the door ring 11 and the eye plate 12 are set on the same horizontal plane.

[0028] like Figure 3 As shown, multiple circular loom electronic jacquard shedding devices are arranged sequentially along the circumference. During operation, when any shuttle 10 moves to the sensing area of ​​the photoelectric sensor 7 (e.g., ... Figure 4 As shown, the photoelectric sensor 7 sends a signal to the main control logic unit 15, and the main control logic unit 15 receives the signal and controls the corresponding electronic jacquard component 15 to operate.

[0029] The entire mechanism typically consists of eight shuttles 10. Each shuttle 10 is inserted into its corresponding weft insertion and drive device 8 during operation, enabling precise insertion of the weft yarn into the gap between the warp yarns. During operation, each shuttle 10 passes sequentially through a corresponding photoelectric sensor 7. Whenever a shuttle 10 passes directly beneath a photoelectric sensor 7, the sensor collects a light-blocking signal and sends it to its paired main control logic unit 13, ensuring synchronization between the opening and the shuttle 10's movement, thus achieving closed-loop trigger control. Upon receiving the signal, the main control logic unit 13 immediately controls its connected electronic jacquard assembly 15 to operate once, causing the heald 5 at that position to open or close. This control method is "trigger-based," not a preset timing control, and possesses high responsiveness and fault tolerance.

[0030] Example 2 like Figure 5 As shown, the difference between this embodiment and embodiment 1 is that the electronic jacquard assembly 15, the eye plate 12, and the heddle spring fixing plate 1 are located at the upper, middle, and lower parts of the support leg 4, respectively, and the door ring 11 and the eye plate 12 are set on the same horizontal plane.

Claims

1. An electronic pattern opening device for a circular weaving machine, characterized in that The application relates to a circular weaving machine with multiple electronic pattern opening devices, which comprises the following parts: a weft insertion module, which comprises multiple weft insertion driving devices (8) arranged at equal intervals in the circumferential direction, and photoelectric sensors (7) for monitoring the real-time positions of the shuttles (10); an electronic pattern opening module, which comprises electronic pattern opening assemblies (15) and a main control logic unit (15) for controlling the electronic pattern opening assemblies (15); the healds (5) in the electronic pattern opening assemblies (15) are connected to one end of the back spring (2) through the eyelet (6) and the eye plate (12); the other end of the back spring (2) is connected to the back spring fixing plate (1) and fixed; a rack module for bearing the weft insertion module and the electronic pattern opening module, which comprises the supporting legs (4), the door ring (11) for fixing the weft insertion driving devices (8), the back spring fixing plate (1), the eye plate (12), the door ring (11) and the two sides of the electronic pattern opening assembly (15) are respectively connected to the adjacent two supporting legs (4); the multiple electronic pattern opening devices of the circular weaving machine are sequentially arranged and connected in the circumferential direction; when any shuttle (10) runs to the sensing area of the photoelectric sensor (7), the photoelectric sensor (7) sends a signal to the main control logic unit (15), and the main control logic unit (15) controls the corresponding electronic pattern opening assembly (15) to act.

2. The electronic pattern opening device for a circular weaving machine according to claim 1, characterized in that The photoelectric sensors (7) are periodically and uniformly arranged on the corresponding weft insertion driving devices (8), and the sensing areas of all the photoelectric sensors (7) cover the running path of the shuttles (10).

3. The electronic pattern opening device for a circular weaving machine according to claim 1, characterized in that The electronic pattern opening assemblies (15) are correspondingly arranged with the main control logic unit (13), that is, each electronic pattern opening assembly (15) is controlled individually.

4. The electronic pattern opening device for a circular weaving machine according to claim 1, characterized in that The top of the supporting leg (4) is provided with a supporting leg top foot (41), and the bottom is provided with a supporting leg bottom foot (46).

5. The electronic pattern opening device for a circular weaving machine according to claim 1, characterized in that The supporting leg (4) is composed of multiple horizontal and vertical supporting leg bars (42).

6. The electronic pattern opening device for a circular weaving machine according to claim 5, characterized in that The lower part of the connection part of the horizontal and vertical supporting leg bars (42) is provided with a gusset plate (47).

7. The electronic pattern opening device for a circular weaving machine according to claim 5, characterized in that The two ends of the back spring fixing plate (1) are connected with the supporting leg (4) through the back spring fixing plate dragging feet (3); the two ends of the door ring (11) are connected with the supporting leg (4) through the door ring connecting pieces (9), the two ends of the eye plate (12) are connected with the supporting leg (4) through the eye plate dragging feet (17), and the two sides of the electronic pattern opening assembly (15) are connected with the supporting leg (4) through the dragging feet A (14) and the dragging feet B (16).

8. The electronic pattern opening device for a circular weaving machine according to claim 7, characterized in that The supporting leg (4) is provided with the door ring pad (43) for mounting the door ring connecting pieces (9).

9. An electronic pattern opening device for a circular weaving machine according to any one of claims 1 to 8, characterized in that According to the mounting positions of the different electronic pattern opening assemblies (15), the application is divided into the upper-mounted structure and the lower-mounted structure; in the lower-mounted structure, the back spring fixing plate (1), the eye plate (12) and the electronic pattern opening assembly (15) are respectively arranged at the upper part, the middle part and the lower part of the supporting leg (4), and the door ring (11) and the eye plate (12) are arranged on the same horizontal plane; in the upper-mounted structure, the electronic pattern opening assembly (15), the eye plate (12) and the back spring fixing plate (1) are respectively arranged at the upper part, the middle part and the lower part of the supporting leg (4), and the door ring (11) and the eye plate (12) are arranged on the same horizontal plane.

10. The electronic pattern opening device for a circular weaving machine according to claim 9, characterized in that In the lower structure, two sides of the leg (4) are respectively provided with the installation side plate A (44) and the installation side plate B (45) for connecting with the trailing leg A (14) and the trailing leg B (16); in the upper structure, the trailing leg A (14) and the trailing leg B (16) are directly connected with the corresponding leg (4).

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