Pen tube mold inner wall glue injection structure

Abstract

The utility model discloses a pen tube mould inner wall glue injection structure belongs to mould technical field, include: runner plate, be provided with sprue on it, and a plurality of shunt pipes, its connection is in the runner plate, a plurality of shunt pipes corresponding extension to a plurality of to be injection -molding product inner wall, a plurality of shunt pipes are provided with front mould insert, front mould insert is connected on product mould, product mould with front mould insert are located in mould groove, and the enclosure is formed into forming groove between product mould with front mould insert with mould groove. The utility model needs injection molding, and injection plastic pours from sprue, makes injection plastic to each shunt pipe through runner plate, and each shunt pipe tail imports injection plastic into forming groove from the export connection place of its with front mould insert, makes shunt pipe tail to be located in the inside of to be injection -molding product, and this structure makes it not to see sprue residue from outside, and the arc shape of inward bending is shown to shunt pipe tail, and it changes the glue flow direction, and makes the impression disappear.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, and in particular relates to a glue injection structure for the inner wall of a pen tube mold. Background Technology

[0002] In the medical industry, blood glucose lancing devices are medical devices used to collect blood samples for blood glucose monitoring. During the production of blood glucose lancing device tubes, it is difficult to find a suitable injection port location on the entire circumference of the product, resulting in gate residue on the rear face of the injection molded product, which seriously affects the appearance quality of the product and makes it have obvious defects.

[0003] Furthermore, due to the current unreasonable glue injection method, the melt in the runner is directly washed down, leaving a long glue injection mark on the product appearance. This not only damages the overall aesthetics of the product, but also poses a potential threat to the product's performance. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that in the production process of existing pen tube products, due to the unreasonableness of the current glue injection method, the melt in the flow channel is directly washed down, leaving a long glue injection mark on the appearance of the product. This not only destroys the overall aesthetics of the product, but also poses a potential threat to the performance of the product. Therefore, a glue injection structure for the inner wall of the pen tube mold is proposed.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a glue injection structure for the inner wall of a pen tube mold, comprising:

[0006] A runner plate with a gate on it;

[0007] The system includes several manifolds connected to the flow channel plate, with each manifold extending to the inner wall of a product to be injection molded. Each manifold has a front mold insert connected to the product mold. The product mold and the front mold insert are located within the mold groove, and the product mold and the front mold insert form a molding groove by surrounding the mold groove.

[0008] As a further description of the above technical solution:

[0009] The flow channel plate is provided with several positioning posts.

[0010] As a further description of the above technical solution:

[0011] The front mold insert has a split structure.

[0012] As a further description of the above technical solution:

[0013] The front mold insert consists of two symmetrical positioning blocks, which merge to form a positioning groove, and the diverter is located within the positioning groove.

[0014] As a further description of the above technical solution:

[0015] The tail end of the shunt tube is in an inwardly curved arc shape.

[0016] As a further description of the above technical solution:

[0017] The flow channel plate is provided with a plurality of clearance plates, and the plurality of clearance plates are located on one side of the flow divider.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0019] 1. In this utility model, by setting a front mold insert on the product mold, several manifolds are confined within the front mold insert. The product mold, the front mold insert, and the mold groove form a molding groove. When injection molding is required, the injection plastic is poured from the gate, so that the injection plastic passes through the runner plate to each manifold. The tail of each manifold guides the injection plastic from its outlet connection with the front mold insert into the molding groove, so that the tail of the manifold is located inside the product to be injected. This structure makes the gate residue invisible on the surface. The tail of the manifold is an inwardly curved arc shape, which changes the flow direction of the injection, so that the punch marks disappear.

[0020] 2. In this utility model, by dividing the front mold insert into two positioning blocks, compared with the traditional complex gate insert, this gate insert with a structure divided into two halves can be processed separately during electrical discharge machining, reducing the problems of uneven discharge and extended processing time caused by complex shape. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a glue injection structure for the inner wall of a pen tube mold.

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0024] Legend:

[0025] 1-Runner plate; 2-Gate; 3-Manifold; 4-Product to be injected; 5-Front mold insert; 51-Positioning block; 6-Positioning post; 7-Positioning groove; 8-Allowing plate; 9-Product mold; 10-Mold groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] In the description of the embodiments of this utility model, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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.

[0031] In the description 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 connection of 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.

[0032] Please see Figure 1-2 This utility model provides a technical solution: a glue injection structure for the inner wall of a pen tube mold, comprising:

[0033] A runner plate 1, on which a gate 2 is provided;

[0034] A plurality of manifolds 3 are connected to the flow channel plate 1. The plurality of manifolds 3 extend to the inner wall of a plurality of products 4 to be injection molded. A front mold insert 5 is provided on the plurality of manifolds 3. The front mold insert 5 is connected to the product mold 9. The product mold 9 and the front mold insert 5 are located in the mold groove 10. The product mold 9 and the front mold insert 5 form a molding groove between the mold groove 10 and the mold groove 10.

[0035] The runner plate 1 is provided with several positioning posts 6. During the injection molding process, high-pressure plastic enters the mold through the sprue bushing. The positioning posts can disperse the pressure borne by the sprue bushing and prevent local stress concentration from causing damage to the sprue bushing or the mold.

[0036] The front mold insert 5 is a split structure.

[0037] The front mold insert 5 consists of two symmetrical positioning blocks 51, which are combined to form a positioning groove 7, and the diversion pipe 3 is located in the positioning groove 7.

[0038] The tail of the diverter pipe 3 is curved inward. The inward curve reduces fluid residue at the tail of the diverter pipe, keeping the equipment clean and hygienic.

[0039] The flow channel plate 1 is provided with a plurality of clearance plates 8, which are located on one side of the manifold 3. The clearance plates can prevent the manifold from being directly impacted or squeezed by the melt during injection molding, thereby extending the service life of the manifold.

[0040] Working principle: By setting a front mold insert on the product mold, several manifolds are confined within the front mold insert. The product mold, the front mold insert, and the mold cavity form a molding groove. When injection molding is required, the injection plastic is poured from the gate, so that the injection plastic passes through the runner plate to each manifold. The tail of each manifold guides the injection plastic from its outlet connection with the front mold insert into the molding groove, so that the tail of the manifold is located inside the injection molded product. This structure makes the gate residue invisible on the surface. The tail of the manifold is an inwardly curved arc shape, which changes the flow direction of the injection plastic, making the punch marks disappear.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A glue injection structure for the inner wall of a pen tube mold, characterized in that, include: A runner plate with a gate on it; The system includes several manifolds connected to the flow channel plate, with each manifold extending to the inner wall of a product to be injection molded. Each manifold has a front mold insert connected to the product mold. The product mold and the front mold insert are located within the mold groove, and the product mold and the front mold insert form a molding groove by surrounding the mold groove.

2. The glue injection structure for the inner wall of a pen tube mold according to claim 1, characterized in that, The flow channel plate is provided with several positioning posts.

3. The glue injection structure for the inner wall of a pen tube mold according to claim 2, characterized in that, The front mold insert has a split structure.

4. The glue injection structure for the inner wall of a pen tube mold according to claim 3, characterized in that, The front mold insert consists of two symmetrical positioning blocks, which merge to form a positioning groove, and the diverter is located within the positioning groove.

5. The glue injection structure for the inner wall of a pen tube mold according to claim 4, characterized in that, The tail end of the shunt tube is in an inwardly curved arc shape.

6. The glue injection structure for the inner wall of a pen tube mold according to claim 1, characterized in that, The flow channel plate is provided with a plurality of clearance plates, and the plurality of clearance plates are located on one side of the flow divider.

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