Valve element ball structure and machining process thereof

Abstract

The invention discloses a valve core ball structure which comprises a valve ball shell and a valve ball inner core, the valve ball shell is made of a metal material, the valve ball inner core is made of a plastic material, the valve ball inner core is fixed in the valve ball shell, and corresponding through holes are formed in the valve ball shell and the valve ball inner core. The invention further discloses a valve element ball machining process. A metal shell such as a copper shell is adopted outside the valve element ball, and a plastic inner core such as a PPR material inner core is adopted inside the valve element ball, so that the product rigidity and the sealing between the outside and the valve body are guaranteed, a circulation inner hole is formed inside, scaling is not prone to occurring, and materials are saved. And industrial problems are solved, and large-scale application and popularization are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of valve core balls, and in particular to a valve core ball structure and a processing technology thereof. Background Art

[0002] The valve core ball is a valve component used to control fluids. It is usually made of metal or plastic and has a spherical design. Metal valve core balls are made of solid copper. On the one hand, the cost is high and the material is wasted. On the other hand, the inner hole is prone to scaling and clogging. Plastic valve core balls are mostly made of PPR material. Although this solves the problem of scaling to a certain extent, the valve core ball needs to be connected to the valve core rod by twisting. Due to the insufficient strength of the plastic valve core ball, it is easy to be damaged at the twisting connection with the valve core rod. Due to the unique shape and structure of the valve core ball, the existing technology has been troubled and has become a problem in market promotion and use, so it is in urgent need of technological innovation. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems raised in the above background technology and to provide a valve core ball structure and a processing technology thereof.

[0004] To achieve the above object, the technical solution of the present invention is: A valve core ball structure includes a valve ball shell and a valve ball core. The valve ball shell is made of metal, the valve ball core is made of plastic, the valve ball core is fixed in the valve ball shell, and corresponding through holes are provided on the valve ball shell and the valve ball core.

[0005] In the above-mentioned valve core ball structure, a twisting groove is provided on the outer shell of the valve ball, and a twisting boss is formed correspondingly, and the twisting boss is fitted and fixed with the inner core of the valve ball.

[0006] A valve core ball processing process includes a mold assembly, the mold assembly includes an injection head and a positioning head, the injection head and the positioning head are respectively connected to a mechanism in an injection molding device, and the injection head is provided with an injection hole and a sealing structure; processing using the mold assembly includes the following steps: Step 1: Place the valve ball housing on the injection molding head; Step 2: After the end of the injection head is at a set position in the valve ball housing, the positioning head moves under the drive of the equipment until it cooperates with the injection head to position the valve ball housing; Step 3: After the positioning head and the injection molding head cooperate to position the valve ball housing, a seal is formed between the injection molding head and the inner wall of the through hole in the valve ball housing, and an injection molding cavity is formed between the valve ball housing and the end of the injection molding head; Step 4: The equipment starts injection molding through the injection hole on the injection head. After the injection molding is completed, the valve ball core is formed in the injection cavity; Step 5: Reset the positioning head, remove the valve core ball, complete the injection molding of the valve ball inner core, and form a through hole; Step 6: Inspect the valve core ball after processing to complete the processing.

[0007] In the above-mentioned valve core ball processing technology, the injection hole in the injection head includes a main hole and a plurality of branch holes.

[0008] In the above-mentioned valve core ball processing process, the injection molding head is provided with a positioning end and a positioning side, and the positioning head is respectively provided with a positioning hole and a positioning arc groove provided at the end of the positioning hole. When the valve ball shell is on the positioning end, the positioning is completed by the cooperation between the positioning side and the positioning arc groove.

[0009] In the above-mentioned valve core ball processing technology, the sealing structure on the injection molding head is a sealing groove provided thereon and a sealing ring installed at the sealing groove.

[0010] Effects of the present invention: The valve core ball of the present invention utilizes a metal outer shell, such as a copper shell, and a plastic inner core, such as a PPR material inner core. This ensures product rigidity and a seal between the exterior and the valve body, while also ensuring internal flow and preventing scaling in the inner bore, saving material. This solves industry challenges and facilitates widespread adoption. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 This is a cross-sectional structural diagram of the valve core ball structure of the present invention; Figure 2 It is a three-dimensional structural diagram of the valve core ball structure of the present invention; Figure 3 This is a structural diagram of a mold assembly in the valve core ball processing technology of the present invention; Figure 4 Schematic diagram of the valve ball shell injection molding positioning completed by the mold assembly in the valve core ball processing technology of the present invention; Figure 5 It is a schematic diagram of the completion of injection molding of the valve ball inner core in the valve core ball processing technology of the present invention. DETAILED DESCRIPTION

[0013] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0014] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present invention are for illustrative purposes only and do not represent the only implementation method.

[0015] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0016] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0017] Unless otherwise defined, all technical and scientific terms used in the present description have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this description are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used in this description includes any and all combinations of one or more of the associated listed items.

[0018] See also Figure 1 、 Figure 2As shown, an embodiment of the present invention provides a valve core ball structure, including a valve ball shell 1 and a valve ball core 2. The valve ball shell 1 is made of metal material, and the valve ball core 2 is made of plastic material. The valve ball shell 1 adopts a metal shell, such as a copper shell, etc., and the valve ball core 2 adopts a plastic core, such as a PPR material core, etc. The valve ball core 2 is fixed in the valve ball shell 1, and corresponding through holes 3 are provided on the valve ball shell 1 and the valve ball core 2.

[0019] Furthermore, in order to better form a fixed connection, a twisting groove 4 is provided on the valve ball shell 1, and a twisting boss 5 is formed correspondingly, and the twisting boss 5 is fitted and fixed with the valve ball inner core 2.

[0020] Please refer to Figures 3 to 5 As shown, the present invention also provides a valve core ball processing process, including a mold assembly, the mold assembly includes an injection head 6 and a positioning head 7, the injection head 6 and the positioning head 7 are respectively connected to the mechanism in the injection molding equipment, and the injection head 6 is provided with an injection hole 8 and a sealing structure; the processing using the mold assembly includes the following steps: Step 1: Place the valve ball housing 1 on the injection molding head; Step 2: After the end of the injection head 6 is at a set position in the valve ball housing 1, the positioning head 7 is driven by the device to move until it cooperates with the injection head 6 to position the valve ball housing 1; Step 3: If Figure 4 After the positioning head 7 and the injection head 6 cooperate to position the valve ball housing, a seal is formed between the injection head 6 and the inner wall of the through hole 3 in the valve ball housing 1, and an injection cavity 9 is formed between the valve ball housing 1 and the end of the injection head; Step 4: If Figure 5 As shown, the device starts injection molding through the injection hole 8 on the injection head 6, and after the injection molding is completed, the valve ball inner core 2 is formed in the injection cavity 9; Step 5: The positioning head 7 is reset, the valve core ball is removed, the valve ball inner core is injection-molded, and a through hole is formed; Step 6: Inspect the valve core ball after processing to complete the processing.

[0021] Specifically, the injection hole 8 in the injection head 6 includes a main hole 10 and a plurality of branch holes 11 .

[0022] Furthermore, the injection head 6 is provided with a positioning end 12 and a positioning side 13, and the positioning head 7 is respectively provided with a positioning hole 14 and a positioning arc groove 15 arranged at the end of the positioning hole. When the valve ball housing is on the positioning end, the positioning is completed by the cooperation between the positioning side and the positioning arc groove.

[0023] Furthermore, the sealing structure on the injection head 6 is a sealing groove 16 provided thereon and a sealing ring 17 installed at the sealing groove 16 .

[0024] The valve ball designed in accordance with the present invention is produced using the aforementioned processing method. The valve ball housing 1 of the present invention utilizes a metal housing, such as a copper housing, and the valve ball inner core 2 utilizes a plastic inner core, such as a PPR material inner core. This ensures product rigidity and a seal between the outer shell and the valve body, while also ensuring internal flow and preventing scaling in the inner hole, saving material. This solves industry challenges and facilitates widespread adoption.

[0025] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0026] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of patent protection for the present invention shall be determined by the appended claims.

Claims

1. A valve core ball structure, characterized by: The valve ball housing (1) comprises a valve ball inner core (2), wherein the valve ball housing (1) is made of metal, and the valve ball inner core (2) is made of plastic. The valve ball inner core (2) is fixed in the valve ball housing (1), and corresponding through holes (3) are provided on the valve ball housing (1) and the valve ball inner core (2).

2. The valve core ball structure according to claim 1, characterized in that: The valve ball outer shell (1) is provided with a twisting groove (4) and a corresponding twisting boss (5), and the twisting boss (5) is engaged and fixed with the valve ball inner core (2).

3. A valve core ball processing process, characterized by: The mold assembly includes an injection head (6) and a positioning head (7), the injection head (6) and the positioning head (7) are respectively connected to the mechanism in the injection molding equipment, and the injection head (6) is provided with an injection hole (8) and a sealing structure; processing using the mold assembly includes the following steps: Step 1: Place the valve ball housing (1) on the injection molding head; Step 2: After the end of the injection molding head (6) is located at a set position in the valve ball housing (1), the positioning head (7) is driven by the device to move until it cooperates with the injection molding head (6) to form a positioning for the valve ball housing (1); Step 3: After the positioning head (7) and the injection head (6) cooperate to position the valve ball housing, a seal is formed between the injection head (6) and the inner wall of the through hole (3) in the valve ball housing (1), and an injection cavity (9) is formed between the valve ball housing (1) and the end of the injection head; Step 4: The device starts injection molding through the injection hole (8) on the injection head (6), and after the injection molding is completed, the valve ball inner core (2) is formed in the injection cavity (9); Step 5: The positioning head (7) is reset, the valve core ball is removed, the valve ball core is injection-molded, and a through hole is formed; Step 6: Inspect the valve core ball after processing to complete the processing.

4. A valve core ball processing process according to claim 3, characterized in that: The injection hole (8) in the injection head (6) includes a main hole (10) and a plurality of branch holes (11).

5. The valve core ball processing process according to claim 3, characterized in that: The injection molding head (6) is provided with a positioning end portion (12) and forms a positioning side portion (13). The positioning head (7) is provided with a positioning hole (14) and a positioning arc groove (15) provided at the end portion of the positioning hole. When the valve ball housing is located on the positioning end portion, positioning is completed by the cooperation between the positioning side portion and the positioning arc groove.

6. The valve core ball processing process according to claim 3, characterized in that: The sealing structure on the injection head (6) comprises a sealing groove (16) provided thereon and a sealing ring (17) installed at the sealing groove (16).

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