Eccentric disc for rotary electronic dobby

Abstract

The utility model discloses a kind of eccentric disc for rotary electronic multi-arm machine, including eccentric disc body and eccentric disc boss, the eccentric disc body is equipped with mounting hole;The eccentric disc boss is extended from the side of eccentric disc body, the eccentric disc boss and eccentric disc body form stepped structure, the eccentric disc body and eccentric disc boss are integrally formed whole component.The utility model improves machining precision, operating stability and manufacturing economy by structure optimization and function integration.Eccentric disc body and eccentric disc boss, integrally formed whole component with stepped structure is formed by the two, the design not only guarantees the integrity and rigidity of structure, but also provides reliable positioning datum plane for subsequent assembly and clamping, effectively avoids the problem of looseness or misplacement possibly caused by split connection, improves dynamic stability under high-speed operation.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery technology, and more specifically, to an eccentric disc for a rotary electronic multi-arm machine. Background Technology

[0002] A rotary electronic heddle machine is an electronically controlled heddle-lifting device installed on a loom (especially a rapier loom, an air-jet loom, or other shuttleless looms). Its core function is to precisely control the shedding movement of the warp yarns to form a shed, so that the weft yarns can be smoothly introduced to complete the weaving process.

[0003] The eccentric disc is the core mechanical component of the lifting drive system in a rotary electronic boom lift, converting rotary motion into the reciprocating motion of the lifting rod. Each rotary electronic boom lift typically uses 16 to 20 sets. The 30 series electronic boom lift is currently the most advanced electronic boom lift in the world, with eccentric discs rotating at speeds exceeding 1,000 revolutions per minute, demanding extremely high precision, reliability, and service life.

[0004] See Figure 3 The existing 30-series eccentric disks adopt a split structure, with the eccentric disk body and the eccentric disk boss connected by screws or riveting. This has revealed the following technical problems during actual production and use:

[0005] First, the eccentric disk boss material of the 30 series eccentric disk with split structure is spring steel. This material is prone to heat treatment deformation during the overall quenching process, which affects the geometric accuracy. If the groove on the outer edge of the eccentric disk boss is locally quenched, the core hardness of the unquenched area is insufficient, the wear resistance is poor, and the material rigidity is low. Under long-term alternating load, it is prone to plastic deformation, which leads to structural failure.

[0006] Secondly, the 30 series eccentric disk with a split structure is prone to dynamic loosening at the connection points under high-speed rotation conditions. Fretting wear is likely to occur between the screws and the hole walls, which not only reduces the transmission accuracy but also causes fatigue cracks and significantly shortens the service life of the components.

[0007] Third, the 30 series eccentric disc with a split structure has multiple cumulative errors during the assembly process, including rivet hole machining deviation, stacking alignment offset and riveting deformation, which makes it difficult to control the overall form and position tolerance of the eccentric disc, affecting the motion accuracy and running stability, and thus reducing the repeatability and reliability of the loom sheath.

[0008] Fourth, the split-structure 30-series eccentric discs have high requirements for material performance, requiring the use of special alloy steel with high strength and high toughness. However, due to the small market demand, domestic steel mills have not carried out large-scale production, resulting in difficulties in the supply of raw materials. Even if they are custom-made, the cost is high, and they do not have good economic efficiency or industrialization promotion value.

[0009] Therefore, it is necessary to provide an eccentric disk for a rotary electronic multi-arm machine to solve the above problems. Utility Model Content

[0010] The purpose of this invention is to provide an eccentric disk for a rotary electronic multi-arm machine, overcoming the aforementioned defects in the prior art.

[0011] The technical solution to achieve the purpose of this utility model is: an eccentric disk for a rotary electronic multi-arm machine, including an eccentric disk body and an eccentric disk protrusion, wherein the eccentric disk body is provided with mounting holes; the eccentric disk protrusion extends from one side of the eccentric disk body, and the eccentric disk protrusion and the eccentric disk body form a stepped structure, and the eccentric disk body and the eccentric disk protrusion are integrally formed components.

[0012] Furthermore, the eccentric disk body and the eccentric disk boss are integrally formed into a single structure through forging or machining.

[0013] Furthermore, the eccentric disk body and the eccentric disk boss are made of bearing steel.

[0014] Furthermore, the outer edge of the eccentric disk body is provided with a first groove, and the outer edge of the eccentric disk protrusion is provided with a second groove, the first groove and the second groove being located on both sides of the mounting hole respectively.

[0015] Furthermore, the center point of the first groove, the center of the mounting hole, and the center point of the second groove are located on the same radial straight line passing through the center of the mounting hole.

[0016] Furthermore, the eccentric disk body is circular, and the center of its mounting hole does not coincide with the geometric center of the circle.

[0017] Furthermore, the eccentric disk body is provided with multiple process observation holes and multiple positioning pin holes. The process observation holes penetrate the disk surface of the eccentric disk body and are distributed along the circumferential direction. They are used for alignment detection during processing or assembly, while also reducing rotating mass and assisting in dynamic balancing. The positioning pin holes are used for alignment and fixing with mating parts during assembly.

[0018] Furthermore, the eccentric disk protrusion is provided with weight-reducing holes to reduce rotating mass and assist in dynamic balance.

[0019] By adopting the above technical solution, this utility model has the following beneficial effects:

[0020] (1) This utility model significantly improves processing accuracy, operational stability and manufacturing economy through structural optimization and functional integration. The eccentric disk body and the eccentric disk protrusion together form an integral molded component with a stepped structure. This design not only ensures the integrity and rigidity of the structure, but also provides a reliable positioning reference surface for subsequent assembly and clamping, effectively avoiding the loosening or misalignment problems that may be caused by the separate connection, and improving the dynamic stability under high-speed operation.

[0021] (2) This utility model is integrally formed by forging or machining, which ensures that the material structure is dense and the mechanical properties are excellent. At the same time, it is easy to realize the one-time forming of complex geometric shapes, which improves the manufacturing consistency and product reliability.

[0022] (3) This utility model is made of bearing steel material, which has high hardness, high wear resistance and good fatigue resistance. It is particularly suitable for transmission environments that bear frequent alternating loads, significantly extending the service life of the eccentric disc, reducing motion errors caused by wear, and ensuring long-term stability of the weaving process.

[0023] (4) The present invention provides a first groove on the outer edge of the eccentric disk body and a second groove on the outer edge of the eccentric disk protrusion, and the two are located on both sides of the mounting hole. This layout makes the two functional grooves symmetrically distributed in the radial direction, which is conducive to balancing the rotating mass, reducing the vibration caused by centrifugal force, and providing an independent motion trajectory interface for different drive paths or two-phase control, thereby enhancing the control flexibility of the mechanism.

[0024] (5) The center point of the first groove, the center of the mounting hole and the center point of the second groove of this utility model are located on the same radial straight line passing through the center of the mounting hole, which realizes the precise alignment of key functional features, ensures the symmetry and repeatability of the eccentric disk movement, avoids uneven opening or failure of weft insertion due to phase deviation, and improves the consistency of fabric quality.

[0025] (6) The eccentric disk body of this utility model is circular, and the center of its mounting hole does not coincide with the geometric center of the outer shape, forming a typical eccentric structure. It is this design that transforms the continuous rotational motion into regular reciprocating oscillation, driving the lifting rod to complete the opening action. This is the core mechanism for realizing the efficient lifting function of the electronic multi-arm machine.

[0026] (7) The process observation hole of this utility model penetrates through the disc body, which facilitates visual alignment and inspection during processing and assembly, and improves manufacturing accuracy and assembly efficiency; the positioning pin hole is used to achieve circumferential precise positioning with the mating parts through pins to prevent relative rotation.

[0027] (8) The process observation holes on the eccentric disc body of this utility model are evenly distributed along the circumference, which not only effectively reduces the overall rotating mass, reduces inertial force and energy consumption, but also helps to improve dynamic balance performance, reduce vibration and noise during high-speed operation, and improve the overall machine operation stability and weaving quality. Attached Figure Description

[0028] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0029] Figure 1 This is a perspective view of the present invention.

[0030] Figure 2 This is a front view of the present invention.

[0031] Figure 3 This is an exploded view of the split-type 30 series eccentric disk.

[0032] 1. Eccentric disc body; 2. Eccentric disc protrusion; 11. Mounting hole; 12. First groove; 13. Process observation hole; 14. Positioning pin hole; 21. Second groove; 22. Weight reduction hole. Detailed Implementation

[0033] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.

[0039] (Example 1)

[0040] An eccentric disk for a rotary electronic multi-arm machine, see Figure 1 and Figure 2 The system includes an eccentric disk body 1 and an eccentric disk protrusion 2. The eccentric disk body 1 is circular and has a circular mounting hole 11. The center of the mounting hole 11 does not coincide with the geometric center of the eccentric disk body 1. The circular shape of the eccentric disk body and the fact that the center of its mounting hole does not coincide with the geometric center of the outer shape constitute a typical eccentric structure. It is this design that transforms continuous rotational motion into regular reciprocating oscillation, driving the lifting rod to complete the opening action. This is the core mechanism for realizing the efficient lifting function of the electronic multi-arm crane.

[0041] The eccentric disk protrusion 2 extends from one side of the eccentric disk body 1, and the eccentric disk protrusion 2 and the eccentric disk body 1 form a stepped structure. The eccentric disk body 1 and the eccentric disk protrusion 2 are integral components formed by one piece.

[0042] Specifically, the eccentric disc body 1 and the eccentric disc boss 2 are made of bearing steel and are integrally formed into a single structure through forging or machining. Integral forming through forging or machining ensures a dense material structure and excellent mechanical properties, while also facilitating the one-time forming of complex geometries, thus improving manufacturing consistency and product reliability. Made of bearing steel, which possesses high hardness, high wear resistance, and good fatigue resistance, it is particularly suitable for transmission environments subjected to frequent alternating loads, significantly extending the service life of the eccentric disc, reducing motion errors caused by wear, and ensuring long-term stability in the weaving process.

[0043] Specifically, the outer edge of the eccentric disk body 1 is provided with a first groove 12, and the outer edge of the eccentric disk protrusion 2 is provided with a second groove 21. The first groove 12 and the second groove 21 are located on both sides of the mounting hole 11, respectively. The center point of the first groove 12, the center of the mounting hole 11, and the center point of the second groove 21 are located on the same radial straight line passing through the center of the mounting hole 11.

[0044] Specifically, the eccentric disk body 1 is provided with three process observation holes 13 and four positioning pin holes 14. The process observation holes 13 penetrate the disk surface of the eccentric disk body 1 and are used for alignment detection during processing or assembly. The positioning pin holes 14 are used for alignment and fixation with mating parts during assembly. The eccentric disk boss 2 is provided with weight reduction holes 22. The three process observation holes 13 are distributed along the circumference to reduce rotating mass and assist dynamic balance. The process observation holes 13 can be set as circular or other shapes, and their size can also be set according to the needs of the accessories. In this embodiment, the weight reduction holes 22 are designed as open semicircles. The process observation holes on the eccentric disk body are evenly distributed along the circumference, which not only effectively reduces the overall rotating mass, reduces inertial force and energy consumption, but also helps to improve dynamic balance performance, reduce vibration and noise during high-speed operation, and improve the overall machine operation stability and weaving quality.

[0045] This embodiment significantly improves machining accuracy, operational stability, and manufacturing economy through structural optimization and functional integration. The eccentric disk body and the eccentric disk boss form a single, integrally molded component with a stepped structure. This design not only ensures structural integrity and rigidity but also provides a reliable positioning reference surface for subsequent assembly and clamping, effectively avoiding loosening or misalignment problems that may arise from separate connections, and improving dynamic stability under high-speed operation. Compared to imported products, this product can effectively reduce production costs and improve service life and accuracy.

[0046] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An eccentric disc for a rotary electronic dobby, characterized by: It includes an eccentric disk body (1) and an eccentric disk protrusion (2). The eccentric disk body (1) is provided with a mounting hole (11). The eccentric disk protrusion (2) extends from one side of the eccentric disk body (1). The eccentric disk protrusion (2) and the eccentric disk body (1) form a stepped structure. The eccentric disk body (1) and the eccentric disk protrusion (2) are integral components formed by one piece.

2. The eccentric disk for a rotary electronic multi-arm machine according to claim 1, characterized in that: The eccentric disk body (1) and the eccentric disk boss (2) are integrally formed by forging or machining.

3. The eccentric disc for a rotary electronic dobby according to claim 2, characterized in that: The eccentric disk body (1) and the eccentric disk boss (2) are made of bearing steel.

4. The eccentric disc for a rotary electronic dobby according to claim 1, wherein: The outer edge of the eccentric disk body (1) is provided with a first groove (12), and the outer edge of the eccentric disk protrusion (2) is provided with a second groove (21). The first groove (12) and the second groove (21) are located on both sides of the mounting hole (11).

5. The eccentric disc for a rotary electronic dobby according to claim 4, wherein: The center point of the first groove (12), the center of the mounting hole (11), and the center point of the second groove (21) are located on the same radial straight line passing through the center of the mounting hole (11).

6. The eccentric disc for a rotary electronic dobby according to claim 1, wherein: The eccentric disk body (1) is circular, and the center of its mounting hole (11) does not coincide with the geometric center of the circle.

7. The eccentric disc for a rotary electronic dobby according to claim 5, wherein: The eccentric disk body (1) is provided with a plurality of process observation holes (13) and a plurality of positioning pin holes (14). The process observation holes (13) penetrate the disk surface of the eccentric disk body (1) and are distributed along the circumferential direction. They are used for alignment detection during processing or assembly, and at the same time, they reduce the rotating mass and assist in dynamic balancing. The positioning pin holes (14) are used for alignment and fixing with the mating parts during assembly.

8. The eccentric disk for a rotary electronic multi-arm machine according to claim 5, characterized in that: The eccentric disk protrusion (2) is provided with a weight reduction hole (22) to reduce the rotating mass and assist in dynamic balance.

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