Integrated anti-falling internally-buckled cap

Abstract

The utility model relates to an integrated anti-falling inner buckle cap which aims at solving the technical problems that the existing similar products are inconvenient to produce through injection molding in an integrated mode, poor in stability, high in production cost and poor in corresponding mold and forming method. A protruding port cover is arranged on the outer diameter of an orifice at one end of a body of the anti-falling internally-buckled cap, protruding barb heads are arranged on the outer diameters of elastic pieces with openings at equal intervals on an orifice at the other end of the body respectively, and protruding elastic pieces which are integrally formed in an injection molding mode are arranged on the inner diameters of the barb heads respectively. The key point is that the inner wall diameter of the through hole at the root of the elastic sheet of the body is larger than that of the through hole at the port cover, and the through hole in the body is expanded in a horn shape from one end of the port cover to the other end; a mold rod sleeved from one end of the elastic sheet is respectively arranged in a molding injection mold of the body, the mold rod comprises a sleeve rod and an inner rod, one end of the sleeve rod of the mold rod is a conical head and is sleeved in the through hole of the body, a step hook groove for injection molding of the elastic sheet is formed, and the inclined strut drives the movable mold seat to move outwards along the sliding rail during mold opening.

Description

Technical Field

[0001] The utility model relates to a quick connector inner buckle cover cap, which is an integrated anti-dropping inner buckle cover cap. Background Art

[0002] The inner buckle cap of the quick connector, or the inner buckle of the buckle cap, is one of the main components of a quick connector. This component is fixed in the cover sleeve or threaded cover by an interference fit with a barb head equidistantly set at one end, and is used for the ports of two-way and three-way pipe connectors. Such pipe connectors are disclosed in Chinese patent documents, such as the authorization announcement number CN210510665U, the authorization announcement date 2020.05.12, and the utility model name "quick pipe connector"; another example is the authorization announcement number CN214405088U disclosed in Chinese patent documents, the authorization announcement date 2021.10.15, and the utility model name "pipe quick connector". However, the inner buckle cap of the above-mentioned product and similar products realizes the engagement and locking of the outer diameter of the pipe fitting through an integrally molded metal spring sheet, which makes production inconvenient, stability poor, production cost high, recycling inconvenient, and environmental protection effect poor; in particular, the mold structure design is poor, which makes it difficult to achieve integral injection molding. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the utility model is to provide a fully plastic anti-dropping inner buckle cap in the art, which can solve the technical problems of the existing similar products, such as the inconvenience of producing the metal spring piece through injection molding, poor stability, high production cost, and the need for further improvement of the corresponding mold. The purpose is achieved through the following technical solutions.

[0004] An integrated anti-dropping inner snap cap, the outer diameter of the hole at one end of the body of the anti-dropping inner snap cap is provided with a raised port cover, the outer diameter of the spring pieces of the hole at the other end of the body are equidistantly opened with raised barb heads, the inner diameter of the barb heads are provided with raised elastic pieces that are integrally injection molded, and an opening section is provided between the spring pieces at the barb heads; the key points of the structural design are that the inner wall diameter of the through hole at the root of the elastic piece of the body is larger than the inner wall diameter of the through hole at the port cover, the through hole in the body is expanded in a trumpet shape from one end of the port cover to the other end, or the through hole in the body is reduced in a cone shape from one end of the port cover to the other end. The above structure facilitates the molding of the body during demoulding, as well as the molding of the elastic piece of the body.

[0005] The molding injection mold of the main body is respectively provided with a mold rod inserted from one end of the elastic sheet, one end of the mold rod is a conical head and is inserted into the through hole of the main body, the outer diameter of the mold rod between the hook heads of the main body is respectively provided with equidistantly distributed triangular convex ribs, the inner diameter of the convex ribs is provided with protrusions corresponding to the shape of the elastic sheet, the elastic sheet in the through hole of the main body corresponds to the step hook groove between the convex ribs on the mold rod for injection molding of the elastic sheet, the injection molding block at the opening section above the hook heads of the main body is arranged on the inner wall of the inner cavity in the movable mold, and the injection molding block at the opening section of the main body may be arranged on the top of the convex rib of the mold rod.

[0006] The mold rod comprises a sleeve rod and an inner rod, one end of the cone head of the mold rod is arranged at one end of the inner rod, and the other end of the inner rod is inserted and fixed in the sleeve rod, and the cone head inclined surface at the root of the cone head of the inner rod and the lower end surface of the rod hole of the sleeve rod form the step hook groove; the convex rib is equidistantly arranged at the rod hole of the sleeve rod and is higher than the lower end surface, and the inner diameter between the lower end surface of the sleeve rod and the higher end surface of the convex rib is provided with a hook inclined surface, and the outer diameter of the lower end surface of the sleeve rod is equidistantly provided with a groove integrated with the convex rib. The above structure adopts a mold rod structure design of a combination of a sleeve rod and an inner rod, and it can also adopt a mold rod structure design of a sleeve rod and an inner rod integrally formed by a wire cutting and milling cutter process.

[0007] The mold rod is arranged on the movable mold of the injection molding mold, which includes a movable mold seat and a movable mold cover. A flat key surface is arranged on one side of the other end of the mold rod and is fixed to the movable mold seat of the movable mold. The movable mold seat of the movable mold and the movable mold cover are split from the upper and lower molds at the barb head of the main body, and the injection molding block is arranged on the inner wall of the inner cavity of the movable mold cover of the movable mold. Therefore, when the movable mold cover of the movable mold is opened, after the main body is taken out from the sleeve rod and the inner rod of the mold rod before being cooled and formed, the movable mold cover of the movable mold is split from the movable mold seat until the elastic sheet at the inner wall of the through hole of the main body is integrally formed with the main body after the main body is cooled.

[0008] The conical head at the inner rod of the mold rod corresponds to the trumpet-shaped expansion of the through hole in the main body from one end of the port cover to the other end, or corresponds to the conical reduction of the through hole in the main body from one end of the port cover to the other end; when the conical head at the inner rod of the mold rod corresponds to the conical reduction of the through hole in the main body from one end of the port cover to the other end, the inner rod of the mold rod is fixed to the movable mold cover of the movable mold, and the flat key surface at the other end of the sleeve rod of the mold rod is fixed to the movable mold seat of the movable mold.

[0009] The conical head at the inner rod of the mold rod corresponds to the trumpet-shaped expansion of the through hole in the main body from one end of the port cover to the other end, or corresponds to the conical reduction of the through hole in the main body from one end of the port cover to the other end; when the conical head at the inner rod of the mold rod corresponds to the conical reduction of the through hole in the main body from one end of the port cover to the other end, the inner rod of the mold rod is fixed to the movable mold cover of the movable mold, and the flat key surface at the other end of the sleeve rod of the mold rod is fixed to the movable mold seat of the movable mold.

[0010] The movable mold seat of the movable mold in the molding injection mold is symmetrically arranged on both sides of the longitudinal center axis of the movable mold cover and the inner body of the movable mold seat, and is respectively provided with oblique supports that are supported downward and outward. The edges on both sides of the oblique supports of the movable mold seat are respectively provided with slide rails that are symmetrically arranged in pairs. When the movable mold is opened, the movable mold seat is driven by the oblique supports to move outward along the slide rails.

[0011] The molding injection mold includes a base, a support rod, a fixed mold and a movable mold. The fixed mold is arranged in the fixed mold of the molding injection mold. The bottom of the fixed mold is connected to the base through a support rod or a guide column. The slide rail is fixedly arranged on the fixed mold. The inner diameter of the circular hole on the top of the movable mold is provided with an annular injection mold. The injection channel at the bottom of the injection mold is communicated with the injection channel in the movable mold cover of the movable mold. The injection mold and the movable mold cover are connected as a whole.

[0012] The injection mold is connected to the movable mold cover through the movable mold plate. At the same time, the injection channel at the bottom of the injection mold is connected with the injection channel in the movable mold cover of the movable mold through the movable mold plate. The movable mold cover in the movable mold and the fixed mold core cover in the fixed mold are combined into a rectangular parallelepiped. The end corners of the movable mold cover are respectively provided with end angle grooves symmetrically arranged in pairs. The upper end corners of the fixed mold core corresponding to the end angle grooves are respectively provided with raised end angle blocks, and the triangular end head at the top of the diagonal support is fixed to the movable mold plate of the movable mold.

[0013] The utility model has reasonable structural design, convenient production, low production cost, simple production and molding, and is convenient for multi-cavity mold production and application; it is suitable for use as an anti-dropping inner buckle cap of a quick connector, and is a structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic cross-sectional structural diagram of an embodiment of the utility model.

[0015] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure.

[0016] Figure 3 yes Figure 2 Schematic diagram of mold structure Figure 1 , the dotted line in the figure is a schematic diagram of the inner wall structure of the moving mold.

[0017] Figure 4 yes Figure 3 Schematic diagram of mold structure Figure 2 , the dotted line in the figure is the external structure of the mold at the main body forming location.

[0018] Figure 5 yes Figure 4 Schematic diagram of the mold rod structure at the main body molding.

[0019] Figure 6 yes Figure 5 Schematic diagram of the mold rod structure, in which the framed part is enlarged.

[0020] Figure 7 yes Figure 5 Schematic diagram of the cross-sectional structure, in which the framed part is enlarged.

[0021] Figure 8 yes Figure 7 Schematic diagram of the improved structure.

[0022] Serial numbers and names of the accompanying drawings: 1. Main body, 101. Port cover, 102. Barb head, 103. Elastic sheet, 104. Opening section, 2. Base, 3. Support rod, 4. Fixed mold, 401. Fixed mold core, 5. Moving mold, 501. Moving mold seat, 502. Moving mold cover, 503. Moving mold plate, 6. Injection mold, 7. Diagonal support, 8. Sleeve rod, 9. Inner rod, 10. Convex rib, 11. Step hook groove. Implementation

[0023] Now, in conjunction with the accompanying drawings, the structure and use of the utility model are further described. Figure 1-Figure 2 As shown, the outer diameter of the hole at one end of the body 1 of the anti-dropping inner snap cap is provided with a raised port cover 101, the outer diameter of the spring pieces with equidistant openings at the hole at the other end of the body are respectively provided with raised barb heads 102, the inner diameters of the barb heads are respectively provided with raised elastic pieces 103 which are injection-molded as one piece, and opening sections 104 are provided between the spring pieces at the barb heads; the inner wall diameter of the through hole at the root of the elastic piece of the body is larger than the inner wall diameter of the through hole at the port cover, and the through hole in the body expands in a trumpet shape from one end of the port cover to the other end.

[0024] like Figure 3-Figure 7 As shown in the figure, a multi-cavity mold arranged in a row is taken as an example, and a mold rod inserted from one end of the elastic sheet is respectively provided in the molding injection mold of the above-mentioned body, and one end of the mold rod is a tapered head and inserted into the through hole of the body, and the outer diameter of the mold rod between the hook heads of the body is respectively provided with triangular convex ribs 10 distributed equidistantly, and the inner diameter of the convex rib is provided with a protrusion corresponding to the shape of the elastic sheet, and the elastic sheet in the through hole of the body corresponds to the step hook groove 11 between the convex ribs on the mold rod for injection molding of the elastic sheet, and the injection molding block at the opening section above the hook heads of the body is arranged on the inner wall of the inner cavity in the movable mold 5.

[0025] Specifically, the mold rod comprises a sleeve rod 8 and an inner rod 9, one end of the cone head of the mold rod is arranged at one end of the inner rod, and the other end of the inner rod is inserted and fixed in the sleeve rod, and the cone head inclined surface at the root of the cone head of the inner rod and the lower end surface of the rod hole of the sleeve rod form the step hook groove; the convex rib is equidistantly arranged at the rod hole of the sleeve rod and is higher than the lower end surface, and the inner diameter between the lower end surface of the sleeve rod and the higher end surface of the convex rib is provided with a hook inclined surface, and the outer diameter of the lower end surface of the sleeve rod is equidistantly provided with a groove integrated with the convex rib. The movable mold of the molding injection mold comprises a movable mold seat 501 and a movable mold cover 502, one side of the other end of the mold rod is provided with a flat key surface and fixed to the movable mold seat of the movable mold, the movable mold seat of the movable mold and the movable mold cover are divided from the upper and lower molds at the barb head of the body, and the injection molding block is arranged on the inner wall of the inner cavity of the movable mold cover of the movable mold.

[0026] At the same time, the movable mold seat of the movable mold in the above-mentioned molding injection mold is symmetrically arranged on both sides of the longitudinal central axis of the movable mold cover and the inner body of the movable mold seat, and is respectively provided with oblique supports 7 that are stretched downward and outward, and the edges on both sides of the oblique supports of the movable mold seat are respectively provided with slide rails that are symmetrically arranged in pairs. When the movable mold is opened, the movable mold seat is driven to move outward along the slide rails through the oblique supports. The molding injection mold includes a base 2, a support rod 3, a fixed mold 4 and a movable mold 5. The fixed mold is arranged in the fixed mold of the molding injection mold, and the bottom of the fixed mold is connected to the base through a support rod or a guide column. The slide rail is fixedly arranged on the fixed mold. The inner diameter of the circular hole on the top of the movable mold is provided with a ring-shaped injection mold 6. The injection channel at the bottom of the injection mold is connected to the injection channel in the movable mold cover of the movable mold, and the injection mold and the movable mold cover are connected as a whole. The injection mold is connected to the movable mold cover through the movable mold plate 503. At the same time, the injection channel at the bottom of the injection mold is connected with the injection channel in the movable mold cover of the movable mold through the movable mold plate. The movable mold cover in the movable mold and the fixed mold core 401 in the fixed mold are combined into a rectangular parallelepiped. The end corners of the movable mold cover are respectively provided with end corner grooves symmetrically arranged in pairs. The upper end corners of the fixed mold core corresponding to the end corner grooves are respectively provided with raised end corner blocks. The triangular end head at the top of the diagonal support is fixed to the movable mold plate of the movable mold.

[0027] When the movable mold cover of the movable mold is opened, the main body is taken out from the sleeve rod and the inner rod of the mold rod before cooling and forming, and the movable mold cover of the movable mold is separated from the movable mold seat until the elastic sheet and the main body are integrally formed at the inner wall of the through hole of the main body after the main body is cooled.

[0028] According to the above structural characteristics, such as Figure 8 As shown, the through hole in the body can also be tapered from one end of the port cover to the other end. When the tapered head at the inner rod of the mold rod corresponds to the tapered reduction of the through hole in the body from one end of the port cover to the other end, the inner rod of the mold rod is fixed to the movable mold cover of the movable mold, and the flat key surface at the other end of the sleeve rod of the mold rod is fixed to the movable mold seat of the movable mold.

[0029] The above content is intended to illustrate the technical means of the utility model, not to limit the technical scope of the utility model. The technical personnel in this field can make obvious improvements or substitutions to the utility model in combination with the existing common knowledge, which also fall within the protection scope of the claims of the utility model; such as the injection molding block at the opening section of the above-mentioned body or the top of the convex rib of the mold rod, or the sleeve rod and the inner rod of the mold rod are integrally formed by wire cutting and milling cutter.

Claims

1. An integrated anti-dropping inner snap cap, wherein the outer diameter of the hole opening at one end of the body (1) of the anti-dropping inner snap cap is provided with a protruding port cover (101), the outer diameter of the spring pieces of the hole opening at the other end of the body are equidistantly provided with protruding barb heads (102), the inner diameter of the barb heads are provided with protruding elastic pieces (103) which are integrally injection molded, and an opening section (104) is provided between the spring pieces at the barb heads; characterized in that The inner wall diameter of the through hole at the root of the elastic sheet (103) of the body (1) is larger than the inner wall diameter of the through hole at the port cover (101), and the through hole in the body expands in a trumpet shape from one end of the port cover to the other end, or the through hole in the body shrinks in a cone shape from one end of the port cover to the other end.

2. The one-piece anti-drop inner buckle cap according to claim 1, characterized in that The molding injection mold of the body (1) is respectively provided with a mold rod inserted from one end of the elastic sheet (103), one end of the mold rod is a conical head and is inserted into the through hole of the body, the outer diameter of the mold rod between the barb heads (102) of the body is respectively provided with equidistantly distributed triangular convex ribs (10), the inner diameter of the convex rib is provided with a protrusion corresponding to the shape of the elastic sheet, the elastic sheet in the through hole of the body corresponds to the step hook groove (11) between the convex ribs on the mold rod for injection molding of the elastic sheet, the injection molding block at the opening section (104) above between the barb heads (102) of the body is arranged on the inner wall of the inner cavity of the movable mold (5), and the injection molding block at the opening section of the body is arranged or arranged at the top of the convex rib of the mold rod.

3. The one-piece anti-drop inner buckle cap according to claim 2 is characterized in that The mold rod comprises a sleeve rod (8) and an inner rod (9), one end of the cone head of the mold rod is arranged at one end of the inner rod, and the other end of the inner rod is inserted and fixed in the sleeve rod, and the cone head inclined surface at the root of the cone head of the inner rod and the lower end surface of the sleeve rod at the rod hole form the step hook groove (11); the convex rib (10) is equidistantly arranged at the rod hole of the sleeve rod and is higher than the lower end surface, the inner diameter between the lower end surface of the sleeve rod and the higher end surface of the convex rib is provided with a hook inclined surface, and the outer diameter of the lower end surface of the sleeve rod is equidistantly provided with a groove integral with the convex rib.

4. The integrated anti-drop inner buckle cap according to claim 3 is characterized in that The mold rod is arranged on a movable mold (5) of a molding injection mold, and comprises a movable mold seat (501) and a movable mold cover (502). A flat key surface is arranged on one side of the other end of the mold rod, and the mold rod is fixed to the movable mold seat of the movable mold. The movable mold seat and the movable mold cover of the movable mold are divided into upper and lower molds at the barb head (102) of the main body, and the injection molding block is arranged on the inner wall of the inner cavity of the movable mold cover of the movable mold.

5. The integrated anti-drop inner buckle cap according to claim 4, characterized in that The conical head at the inner rod (9) of the mold rod corresponds to the trumpet-shaped expansion of the through hole in the body (1) from one end of the port cover (101) to the other end, or corresponds to the conical reduction of the through hole in the body from one end of the port cover to the other end; when the conical head at the inner rod of the mold rod corresponds to the conical reduction of the through hole in the body from one end of the port cover to the other end, the inner rod of the mold rod is fixed to the movable mold cover (502) of the movable mold (5), and the flat key surface at the other end of the sleeve rod (8) of the mold rod is fixed to the movable mold seat (501) of the movable mold.

6. The integrated anti-drop inner buckle cap according to claim 5, characterized in that The movable mold seat (501) of the movable mold (5) in the molding injection mold is symmetrically arranged on both sides of the longitudinal center axis of the movable mold cover (502) and the inner body (1) of the movable mold seat, and is respectively provided with oblique supports (7) that are extended downward and outward. The edges of the oblique supports of the movable mold seat are respectively provided with slide rails that are symmetrically arranged in pairs. When the movable mold is opened, the movable mold seat is driven by the oblique supports to move outward along the slide rails.

7. The integrated anti-drop inner buckle cap according to claim 6, characterized in that The molding injection mold comprises a base (2), a support rod (3), a fixed mold (4) and a movable mold (5), wherein the fixed mold is arranged in the fixed mold of the molding injection mold, the bottom of the fixed mold is connected to the base through a support rod or a guide column, the slide rail is fixedly arranged on the fixed mold, the inner diameter of the circular hole at the top of the movable mold is provided with an annular injection mold (6), the injection channel at the bottom of the injection mold is communicated with the injection channel in the movable mold cover of the movable mold, and the injection mold and the movable mold cover are connected as a whole.

8. The integrated anti-drop inner buckle cap according to claim 6, characterized in that The injection mold (6) is connected to the movable mold cover (502) through the movable mold plate (503). At the same time, the injection channel at the bottom of the injection mold is connected to the injection channel in the movable mold cover of the movable mold through the movable mold plate. The movable mold cover in the movable mold (5) and the fixed mold core (401) in the fixed mold (4) are combined into a rectangular parallelepiped. The end corners of the movable mold cover are respectively provided with end corner grooves arranged symmetrically in pairs. The upper end corners of the fixed mold core corresponding to the end corner grooves are respectively provided with protruding end corner blocks. The triangular end head at the top of the diagonal support is fixed to the movable mold plate of the movable mold.

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