A top structure and its manufacturing method and water meter

Abstract

The present application discloses a top structure, a manufacturing method thereof, and a water meter. The top structure includes: a head and a bottom, the head and the bottom are matched and connected, and the head and the bottom are integrally injection molded. The manufacturing method of the top structure comprises making a mold for the top structure, placing the bottom as an insert in the mold, and then pouring the molten material for making the head into the mold, thereby completing the integral injection molding of the head and the bottom. The water meter includes the top structure. In the present application, the head and the bottom are integrally injection molded, without any assembly steps and without the need for adhesives, thereby making the connection between the head and the bottom more secure, reducing the processing steps, shortening the production cycle, and reducing manufacturing costs; in addition, since the present application adopts an integral injection molding setting, the head is changed from cutting molding to injection molding, and its technical accuracy can reach a level of R less than 0.3, thereby improving the product yield.

Description

Technical Field

[0001] The present application belongs to the technical field of top structures, and specifically relates to a top structure, a manufacturing method thereof, and a water meter. Background Art

[0002] The state-of-the-art structures such as Figure 1 As shown, a prefabricated groove is formed in the metal part 1, and an adhesive, such as 502 glue, is applied to the plastic part 2. The plastic part 2 is then pressed into the metal part 1. After the adhesive cures, the plastic part 2 is cut and formed to form a finished part. The bonding methods used for plastic parts 2 in the prior art are subject to problems such as overflowing glue, inadequate pressing, and detachment, ultimately resulting in a low yield rate. Furthermore, the plastic part 2 requires subsequent cutting, which is costly and time-consuming, and there is still a risk of defects caused by the bonding after processing. Furthermore, the tip 3 of the plastic part 2 often fails to meet the technical accuracy requirement of R 0.3 after cutting. Summary of the Invention

[0003] In view of the shortcomings or deficiencies of the above-mentioned prior art, the technical problem to be solved by this application is to provide a top structure and a manufacturing method thereof, as well as a water meter.

[0004] To solve the above technical problems, this application is implemented through the following technical solutions:

[0005] The present application proposes a top structure, comprising: a head and a bottom, wherein the head and the bottom are matched and connected, and the head and the bottom are integrally injection-molded.

[0006] Furthermore, in the above-mentioned top structure, the head includes: a free portion and a connecting portion, the free portion and the connecting portion are connected, and the connecting portion is matched and connected with the bottom.

[0007] Furthermore, in the above-mentioned top structure, the cross-section of the free portion has a tapered structure.

[0008] Furthermore, in the above-mentioned top structure, the first end of the bottom is provided with a concave arc surface structure.

[0009] Furthermore, in the above-mentioned top structure, the end surface area of ​​the first end of the bottom is smaller than the end surface area of ​​the second end of the bottom.

[0010] Furthermore, in the above-mentioned top structure, the head is made of plastic material.

[0011] Furthermore, in the above-mentioned top structure, the bottom is made of metal material.

[0012] The present application also proposes a water meter comprising the above-mentioned top structure.

[0013] The present application also proposes a method for manufacturing a top structure, which comprises making a mold for the above-mentioned top structure, placing the bottom as an insert in the mold, and then pouring the molten material for the head into the mold, thereby completing the integral injection molding of the head and the bottom.

[0014] Furthermore, in the manufacturing method of the above-mentioned top structure, the melting point of the material for making the bottom is higher than the melting point of the material for making the head.

[0015] Compared with the existing technology, this application has the following technical effects:

[0016] In the present application, the head and the bottom are set up as an integral injection molding, which changes the chemical adhesive connection method used in the prior art. There is no assembly link and no adhesive is required, so that the connection between the head and the bottom is more secure, the processing steps are reduced, the production cycle is shortened, and the manufacturing cost is reduced. In addition, since the present application adopts an integral injection molding setting, the head is changed from cutting molding to injection molding, and its technical precision can reach the level of R less than 0.3, which improves the product yield.

[0017] In the present application, the first end of the bottom is provided with an inwardly concave arc surface structure, which can make the connection between the bottom and the head more reliable, and the arc surface structure has the advantage of being easy to process, which is conducive to industrial production; the end surface area of ​​the first end of the bottom is smaller than the end surface area of ​​the second end of the bottom, so that the head wraps the first end of the bottom and the arc surface structure, further improving the connection reliability between the head and the bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0019] Figure 1 : A schematic diagram of a top structure in the prior art;

[0020] Figure 2 : A schematic diagram of the top structure in one embodiment of the present application;

[0021] Figure 3 : A schematic diagram of the head of the top structure in one embodiment of the present application;

[0022] Figure 4 : A bottom schematic diagram of the top structure in one embodiment of the present application;

[0023] In the figure: a metal component 1 , a plastic component 2 , a tip 3 , a head 4 , a free portion 41 , a connecting portion 42 , a bottom 5 , a first end 51 , a second end 52 and a curved surface structure 53 . DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] like Figure 2 As shown, in one embodiment of the present application, a top structure includes: a head 4 and a bottom 5, the head 4 and the bottom 5 are matched and connected, and the head 4 and the bottom 5 are integrally injection molded.

[0026] In this embodiment, the head 4 and the bottom 5 are arranged as an integral injection molding device, which changes the chemical adhesive connection method adopted in the prior art. There is no assembly process and no adhesive is required, thereby making the connection between the head 4 and the bottom 5 more secure, reducing the processing steps, shortening the production cycle, and reducing manufacturing costs. In addition, since this embodiment adopts an integral injection molding device, the head 4 is changed from cutting molding to injection molding, and its technical accuracy can reach a level of R less than 0.3.

[0027] Specifically, if Figure 3 As shown, the head portion 4 includes a free portion 41 and a connecting portion 42 . The free portion 41 is connected to the connecting portion 42 , and the connecting portion 42 is matched and connected to the bottom portion 5 .

[0028] In this embodiment, the free portion 41 is connected to the impeller shaft of the water meter described below, and the connecting portion 42 is matched and connected to the bottom 5, and is connected by injection molding. Compared with the prior art method of bonding with adhesives, the connection is more firm and more accurate, which is more conducive to improving the accuracy of the water meter described below.

[0029] Specifically, the cross-section of the free portion 41 has a conical structure to achieve its function of supporting the rotation of the impeller shaft. Since it adopts an integrated injection molding setting, there is no need for subsequent processing of the conical structure, which can improve the accuracy and yield of the product.

[0030] Alternatively, as Figure 4 As shown, the first end 51 of the bottom 5 is provided with a concave arc surface structure 53 .

[0031] In this embodiment, the concave curved surface structure 53 provides a reliable connection between the base 5 and the connecting portion 42. The curved surface structure 53 is easy to process and is conducive to industrial production. Compared to existing linear structures, the concave curved surface structure 53 has a larger contact area with the connecting portion 42 in the head 4, further improving the stability of the connection between the two through injection molding.

[0032] Furthermore, the end surface area of ​​the first end 51 of the bottom 5 is smaller than the end surface area of ​​the second end 52 of the bottom 5, so that the connecting portion 42 wraps the first end 51 and the arc surface structure 53 of the bottom 5, further improving the connection reliability between the head 4 and the bottom 5.

[0033] Optionally, the head 4 is made of plastic material to resist wear and corrosion.

[0034] Optionally, the plastic material includes but is not limited to polyamide, polyphenylene sulfide or polycarbonate and the like.

[0035] Optionally, the bottom 5 is made of metal material to enhance the rigidity of the bottom 5 .

[0036] Optionally, the metal material includes but is not limited to stainless steel or aluminum alloy, etc.

[0037] The present application also proposes a method for manufacturing a top structure, making a mold of the top structure, placing the bottom 5 as an insert in the mold, and then pouring the molten material for making the head 4 into the mold, thereby completing the integral injection molding of the head 4 and the bottom 5.

[0038] The top structures involved are described in detail above and will not be repeated here.

[0039] Specifically, the melting point of the material for making the bottom 5 is higher than the melting point of the material for making the head 4 , thereby preventing the bottom 5 from melting when the molten material for making the head 4 is poured into the mold.

[0040] The present application also proposes a water meter, comprising: the top structure described above.

[0041] Specifically, the water meter of this embodiment further includes: an impeller shaft, and the head 4 is matched with the impeller shaft.

[0042] The top structures involved are described in detail above and will not be repeated here.

[0043] In the present application, the head 4 and the bottom 5 are arranged as an integral injection molding device, which changes the chemical adhesive connection method adopted in the prior art. There is no assembly process and no adhesive is required, thereby making the connection between the head 4 and the bottom 5 more secure, reducing the processing steps, shortening the production cycle, and reducing manufacturing costs. In addition, since the present application adopts an integral injection molding device, the head 4 is changed from cutting molding to injection molding, and its technical precision can reach a level of R less than 0.3, thereby improving the product yield.

[0044] In the description of this application, unless otherwise expressly specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0045] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0046] In the description of this embodiment, the terms "upper," "lower," "left," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0047] The above embodiments are intended only to illustrate the technical solutions of the present application and are not intended to limit the present application. The present application is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application and should be included within the scope of the claims of the present application.

Claims

1. A water meter, It is characterized by: The invention comprises a top structure, wherein the top structure comprises a head and a bottom, wherein the head and the bottom are matched and connected, and the head and the bottom are integrally injection-molded; the head comprises a free portion and a connecting portion, wherein the free portion is connected to the connecting portion, and the connecting portion is matched and connected to the bottom; the cross section of the free portion has a tapered structure so as to be connected to the impeller shaft of the water meter; The first end of the bottom is provided with a concave arc surface structure, so that it forms a stable connection with the connecting part; the end surface area of ​​the first end of the bottom is smaller than the end surface area of ​​the second end of the bottom, so that the head wraps the first end of the bottom and the arc surface structure; the head is made of plastic material; and the bottom is made of metal material.

2. A method for manufacturing a top structure, characterized in that: A mold of the top structure as described in claim 1 is made, the bottom is placed in the mold as an insert, and the molten material of the head is poured into the mold, thereby completing the integral injection molding of the head and the bottom.

3. The manufacturing method according to claim 2, characterized in that The melting point of the material of the bottom portion is higher than the melting point of the material of the head portion.

Images