Electromagnetic valve structure with square and circular positioning function

Abstract

The utility model relates to a jacquard machine, in particular to an electromagnetic valve structure with a square and circular positioning function, which comprises an upper positioning hole and a lower positioning hole, and is different from the prior art that at least one of the upper positioning hole and the lower positioning hole is non-circular. Compared with the prior art, the electromagnetic valve structure has the advantages that a square-round positioning mechanism is introduced, so that the positioning accuracy can be remarkably improved. The non-circular positioning hole, such as a rounded square, provides more positioning reference points, so that the positioning deviation caused by machining and assembling errors is reduced, and the accurate matching between the electromagnetic valve and the clamping plate is ensured.

Description

Technical Field

[0001] The utility model relates to a jacquard machine, in particular to an electromagnetic valve structure with square and circle positioning. Background Art

[0002] In the field of textile machinery, particularly in the design and manufacture of jacquard looms, solenoid valves play a crucial role. Their performance is directly related to the stability and efficiency of the jacquard loom. Jacquard looms are complex textile machines that create various patterns and textures by controlling the interweaving of warp and weft threads. In this process, solenoid valves act as actuators, precisely controlling the raising and lowering of the warp threads to achieve complex pattern designs.

[0003] The applicant previously disclosed an electromagnet with an iron core featuring a positioning structure under Chinese utility model patent publication number CN219716601U. This electromagnet features circular upper and lower positioning holes that penetrate the injection-molded insulating base and the iron core. Two upper and lower semicircular grooves are formed in the iron core. These grooves serve as precise positioning structures during the injection molding process, ensuring the symmetry and precision of the electromagnet after injection molding. This design improved the positioning accuracy of the solenoid valve and the symmetry of the component assembly, thereby enhancing the operational stability of the jacquard machine.

[0004] However, despite its advanced nature at the time, this design still had some limitations in practical application. Due to machining and assembly errors, it was difficult to achieve perfect concentricity between the upper and lower positioning holes of the solenoid valve and the positioning axis of the clamping plate. This non-concentricity reduced positioning accuracy, which in turn affected the stability and efficiency of the jacquard machine. Furthermore, as the textile industry's performance requirements for jacquard machines continued to increase, so too did the demand for higher positioning accuracy and stability of the solenoid valve. Therefore, it became necessary to improve the existing solenoid valve structure to meet this growing industrial demand. Utility Model Content

[0005] In view of the above, the present invention proposes a solenoid valve structure with square and round positioning, which aims to improve the positioning accuracy of the solenoid valve and the stability of the components through an innovative positioning method, thereby improving the overall performance of the jacquard machine. To this end, the technical solution adopted by the present invention is:

[0006] A solenoid valve structure with square and circular positioning comprises an upper positioning hole and a lower positioning hole. Different from the prior art, at least one of the upper positioning hole and the lower positioning hole is non-circular in shape.

[0007] Furthermore, the upper positioning hole and the lower positioning hole all penetrate the insulating injection molded body, and the upper positioning hole and / or the lower positioning hole all penetrate the iron core, partially penetrate the iron core, or do not penetrate the iron core.

[0008] Furthermore, the size of the portion of the upper positioning hole and the lower positioning hole penetrating the insulating injection molded body is greater than or equal to the size of the portion penetrating the iron core.

[0009] Furthermore, the upper positioning hole and / or the lower positioning hole are in the shape of a rounded rectangle.

[0010] Furthermore, the upper positioning hole and / or the lower positioning hole are chamfered at the edge of the iron core.

[0011] Furthermore, a line connecting the centers of the upper positioning hole and the lower positioning hole is collinear with the symmetry axis of the iron core.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] 1. Improve positioning accuracy:

[0014] By introducing a square-circle positioning mechanism, the solenoid valve structure of this utility model can significantly improve positioning accuracy. Non-circular positioning holes, such as rounded rectangles, provide more positioning reference points, reducing positioning deviations caused by machining and assembly errors, thereby ensuring a precise fit between the solenoid valve and the clamping plate.

[0015] 2. Enhanced stability and reliability:

[0016] Due to the improvement of positioning accuracy, the stability and reliability of the solenoid valve are also enhanced, which reduces the failure and downtime caused by inaccurate positioning and improves the working efficiency and production continuity of the jacquard machine.

[0017] 3. Reduce assembly errors:

[0018] The design of the square and circle positioning structure reduces the dependence on assembly accuracy, making the assembly process simpler and faster, while also reducing assembly errors caused by improper human operation.

[0019] 4. Enhance positioning strength:

[0020] Because the upper and lower positioning holes penetrate the insulating molded body in a manner equal to or greater than the portion penetrating the iron core, this design exposes the stronger iron core, providing more reliable positioning support. The iron core's high strength helps it withstand greater mechanical stress, ensuring the stability and durability of the solenoid valve under high load conditions.

[0021] 5. Strong adaptability:

[0022] The solenoid valve structure of the utility model can adjust the shape and position of the positioning hole according to different application requirements, thereby providing higher adaptability and flexibility.

[0023] 6. Reduce production costs:

[0024] Since the dependence on high-precision processing equipment and complex assembly processes is reduced, the solenoid valve structure of the utility model helps to reduce production costs and improve market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of Example 1.

[0026] Figure 2 It is a structural diagram of Example 2.

[0027] Figure 3 It is a structural diagram of Example 2. DETAILED DESCRIPTION

[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can readily understand the other advantages and benefits of the present invention from the contents disclosed in this specification. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0031] Example 1, as Figure 1 As shown, an upper and lower circular positioning electromagnetic valve structure includes an I-shaped iron core 100, and the iron core 100 is covered with an insulating injection molding body 200. An upper positioning hole 1 and a lower positioning hole 2 are opened on the electromagnet. The upper positioning hole 1 is a rounded rectangle, and the lower positioning hole 2 is circular like the existing typical positioning holes.

[0032] The core of the solenoid valve structure is the I-shaped iron core 100, which is the main magnetic component of the solenoid valve and is responsible for generating magnetic force under the action of the electromagnetic field.

[0033] The core 100 is covered with an insulating injection molded body 200, typically made of a heat-resistant and chemical-resistant plastic material, to ensure electrical insulation and mechanical protection for the solenoid valve. The solenoid valve is provided with two positioning holes: an upper positioning hole 1 and a lower positioning hole 2. The upper positioning hole 1 is a rounded rectangular design, combining the stability of a square shape with the smoothness of a circle, providing improved positioning accuracy and reducing stress concentration. The lower positioning hole 2 maintains a traditional circular design, compatible with existing positioning holes and facilitating integration with existing assembly lines and components. When the solenoid valve is operating, current passes through the core 100, generating a magnetic field that attracts or releases the suction arms mated to the core, thereby controlling the raising and lowering of the warp threads. The upper and lower positioning holes 1 and 2 are used to secure the solenoid valve to a specific position on the jacquard machine, ensuring precise positioning and stable operation. The rounded rectangular upper positioning hole 1 provides control over four degrees of freedom, while the circular lower positioning hole 2 controls the vertical and horizontal degrees of freedom. The combination of these two ensures precise positioning and reduces rotational degrees of freedom, thereby improving overall assembly accuracy and operational stability. This upper, lower circular positioning design combines the advantages of both square and round positioning methods, improving the solenoid valve's positioning accuracy and stability while reducing issues caused by machining and assembly errors. The rounded rectangular upper positioning hole 1 provides improved contact area and stress distribution, reducing wear during long-term operation. Maintaining the circular design of the lower positioning hole 2 ensures compatibility with existing assembly systems, facilitating implementation and replacement.

[0034] In summary, the solenoid valve structure in Example 1 achieves higher positioning accuracy and stability through the innovative positioning hole design, which is crucial for the efficient and stable operation of precision textile machinery such as jacquard machines.

[0035] In this embodiment, the upper positioning hole 1 is located at the upper edge of the contact arm of the core 100, and the lower positioning hole 2 is located in the middle of the pressure arm of the core 100. That is, the upper positioning hole 1 completely penetrates the insulating injection molded body 200 and partially penetrates the core 100; the lower positioning hole 2 completely penetrates the insulating injection molded body 200 and the core 100. In actual manufacturing, a square slot is first punched out of the contact arm of the core 100 and a circular hole is punched out of the pressure arm. Then, the upper positioning hole 1 and the lower positioning hole 2, which are each circular and have an upper portion and a lower portion, are injection molded outside the core 100. The upper positioning hole 1 is located at the upper edge of the contact arm of the core 100, and the lower positioning hole 2 is located in the middle of the pressure arm of the core 100. This layout provides a stable reference frame, facilitating precise positioning of the solenoid valve in the jacquard knitting machine. By pre-punching the square slot and circular hole in the core 100 and then injection-molding the insulator 200, this manufacturing process can simplify the assembly process, reduce the number of separate processing and assembly steps, and improve production efficiency. The single-step stamping of the positioning holes reduces the need for subsequent machining, thereby reducing machining errors and improving manufacturing precision. The simplified manufacturing process reduces material waste and processing time, thereby lowering production costs. The through-hole design of the upper and lower positioning holes 1 and 2 provides a more stable connection between the solenoid valve and the clamping plate or other fixed structure, reducing vibration and displacement during operation.

[0036] In this embodiment, the size of the portion of the upper positioning hole 1 and the lower positioning hole 2 that penetrates the insulating injection molding 200 is greater than or equal to the size of the portion that penetrates the iron core 100. The design of the upper positioning hole 1 and the lower positioning hole 2 exposes part of the iron core 100, and utilizes the high-strength material properties of the iron core to make the solenoid valve structure more stable when subjected to mechanical stress, reducing the risk of deformation or damage due to external forces. Due to the high strength of the iron core 100, the upper positioning hole 1 and the lower positioning hole 2 can provide more precise positioning, reducing positioning errors caused by material deformation. The exposed iron core portion provides a more stable assembly surface, making the connection between the solenoid valve and other mechanical components more secure, reducing the complexity and potential errors in the assembly process. The high strength of the iron core 100 reduces wear caused by friction during long-term operation, maintains the size and shape of the positioning holes, and thus maintains long-term positioning accuracy.

[0037] In this embodiment, the line connecting the centers of the upper positioning hole 1 and the lower positioning hole 2 is collinear with the axis of symmetry of the iron core 100. This design ensures the symmetry and balance of the solenoid valve structure, which is crucial for ensuring the stability of the solenoid valve during operation and reducing vibration. By aligning the center line of the positioning holes with the axis of symmetry of the iron core, the precise alignment of the solenoid valve during installation can be ensured, thereby improving the overall positioning accuracy. This symmetrical design helps to maintain the mechanical stability of the solenoid valve under high load or dynamic conditions and reduce deformation caused by asymmetric loads. In short, this design improves the positioning accuracy and mechanical stability of the solenoid valve, simplifies the manufacturing and assembly process, enhances the electromagnetic performance, and improves the durability and reliability of the product.

[0038] Example 2, as Figure 2 As shown, an electromagnetic valve structure with an upper circle and a lower positioning bottom includes an I-shaped iron core 100, and the iron core 100 is covered with an insulating injection molded body 200. An upper positioning hole 1 and a lower positioning hole 2 are opened on the electromagnet. The upper positioning hole 1 is a circle like the existing typical positioning hole, and the lower positioning hole 2 is a rounded rectangle.

[0039] In this embodiment, the upper positioning hole 1 is located in the middle of the contact arm of the iron core 100, and the lower positioning hole 2 is located at the lower edge of the pressure arm of the iron core 100, that is, the upper positioning hole 1 completely penetrates the insulating injection molding 200 and the iron core 100, and the lower positioning hole 2 completely penetrates the insulating injection molding 200 and partially penetrates the iron core 100; in actual manufacturing, it is necessary to first punch out a round hole and a square groove on the contact arm of the iron core 100, and punch out a square groove on the pressure arm, and then injection mold the upper positioning hole 1 and the lower positioning hole 2 with an upper part and a lower circle on the outside of the iron core 100.

[0040] In this embodiment, the upper positioning hole 1 and / or the lower positioning hole 2 are chamfered at the edge of the iron core 100. The chamfered design not only improves the structural strength and durability of the solenoid valve, but also simplifies the assembly process and improves the safety and aesthetics of the product.

[0041] Example 2 provides a different design option from Example 1, which may be more suitable for specific application requirements, such as different installation directions, space constraints, cost considerations, safety requirements, and aesthetic requirements. By adjusting the shape and position of the positioning holes, more optimized positioning effect and structural stability can be achieved.

[0042] Example 3, as Figure 3As shown, a solenoid valve structure with an upper and lower circular positioning core without pre-punched holes comprises an I-shaped core 100, which is encased in an insulating injection molded body 200. An upper positioning hole 1 and a lower positioning hole 2 are defined in the solenoid. The upper positioning hole 1 is a rounded rectangular shape, while the lower positioning hole 2 is circular, similar to typical positioning holes in existing designs. Furthermore, the upper positioning hole 1 is located above the core 100, while the lower positioning hole 2 is located below it. In other words, both the upper positioning hole 1 and the lower positioning hole 2 fully penetrate the insulating injection molded body 200 but do not penetrate any portion of the core 100. This embodiment simplifies the manufacturing process, reduces costs, and improves the insulation performance, structural integrity, and durability of the solenoid valve.

[0043] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made based on the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

[0044] Any matters not described in detail in the present invention are prior art or common knowledge in the field.

Claims

1. A solenoid valve structure with square and round positioning, comprising an upper positioning hole (1) and a lower positioning hole (2), characterized in that: At least one of the upper positioning hole (1) and the lower positioning hole (2) has a non-circular shape.

2. The solenoid valve structure with square and circular positioning according to claim 1, characterized in that: The upper positioning hole (1) and the lower positioning hole (2) completely penetrate the insulating injection molded body (200), and the upper positioning hole (1) and / or the lower positioning hole (2) completely penetrate the iron core (100), partially penetrate the iron core (100), or do not penetrate the iron core (100).

3. The solenoid valve structure with square and circular positioning according to claim 1, characterized in that: The size of the portion of the upper positioning hole (1) and the lower positioning hole (2) penetrating the insulating injection molded body (200) is greater than or equal to the size of the portion penetrating the iron core (100).

4. The solenoid valve structure with square and circular positioning according to claim 1, characterized in that: The upper positioning hole (1) and / or the lower positioning hole (2) are in the shape of a rounded rectangle.

5. The solenoid valve structure with square and circular positioning according to claim 1, characterized in that: The upper positioning hole (1) and / or the lower positioning hole (2) are chamfered at the edge of the iron core (100).

6. The electromagnetic valve structure with square and circular positioning according to claim 1, characterized in that: The line connecting the centers of the upper positioning hole (1) and the lower positioning hole (2) is collinear with the symmetry axis of the iron core (100).

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