CN219076404U - Injection mold for semi-circular tube structural parts of notebook computer - Google Patents

Abstract

The utility model discloses an injection mold for a semicircular tube structural part of a notebook computer. The injection mold includes a first mold base and a second mold base. There is a semi-circular arc surface cavity on the top, and at least one connected glue injection flow position is set on the first mold base. The connected glue injection flow position includes the central flow channel and the injection port, and the gap between the central flow channel and any concave-convex surface table There are two equidistant branch channels, any branch channel is equipped with a material storage tank, and the second mold base is equipped with a glue injection channel and an exhaust part. The utility model adopts the design of a uniform material storage tank on the branch flow channel and an exhaust part with several exhaust communication channels, which meets the complete and uniform requirements of product injection molding, and the product qualification rate is greatly improved. It can change the type of glue injection point and adjust the glue injection port to adapt to the characteristics of various glue materials. The application is very flexible. To meet the needs of synchronous supply injection molding in different regions, the efficiency of product injection molding has been greatly improved.

Description

Injection mold for semi-circular tube structural parts of notebook computer

technical field

The utility model relates to an injection mold for a semicircular tube structural part of a notebook computer, and belongs to the technical field of injection molds.

Background technique

Injection mold is a tool for producing plastic products; it is also a tool for giving plastic products complete structure and precise dimensions. Injection molding is a processing method used in the mass production of certain complex-shaped parts. Specifically, it refers to injecting the heated and melted plastic into the mold cavity under high pressure from the injection molding machine, and after cooling and solidifying, a molded product is obtained.

At present, there is a kind of injection molding of semi-circular tube structural parts for notebook computers. The semi-circular tube structural part includes a semi-circular tube wall and a concave-convex surface arranged in the semi-circular tube wall. The piles are provided with matching hole slots on the matching piles.

The structural part is a thin-walled structural part. In general, the injection mold adopts the structure of the profiling injection molding cavity, and the synchronous injection operation is performed through the multi-point distribution of the injection molding cavity, and the internal air resistance is relatively large. , In the process of injection and exhaust, the injection molding is often uneven. In addition, during multi-point injection, the injection points are related to each other through the flow channel, and the flow rate of the flow channel itself is also small, resulting in the uniformity of the entire injection molding. And the injection efficiency is poor, resulting in a certain temperature difference in the injection molding process, causing the viscosity of the glue, and the product injection molding pass rate is low.

Contents of the invention

The purpose of this utility model is to solve the deficiencies of the above-mentioned prior art, aiming at the problem of product quality defects caused by defects such as the uniformity of glue feeding in traditional multi-point injection molding, and proposes an injection mold for semicircular tube structural parts of notebook computers.

In order to achieve the above object, the technical solution adopted in the utility model is:

The injection mold of the notebook computer semi-circular tube structure, the notebook computer semi-circular tube structure includes a semi-circular tube wall and a concave-convex surface arranged in the semi-circular tube wall,

The injection mold includes a first mold base and a second mold base with relative mold clamping displacement, and the first mold base is provided with two concave-convex curved surface tables for forming the concave-convex curved surface that are mirror-symmetrically arranged. The second mold base is provided with a semi-circular tube arc surface cavity corresponding to the concave-convex curved surface table one by one,

The first mold base is provided with at least one connected glue injection flow position between the two concave-convex curved surface tables, and the connected glue injection flow position includes a central flow channel and is arranged on the geometric center of the central flow channel. There are two equidistant branch flow channels between the central flow channel and any of the concave-convex curved surface tables, and any of the branch flow channels is provided with a uniform material storage tank.

The second mold base is provided with a glue injection channel corresponding to the glue injection port connected to the glue injection flow position between the two semicircular tube arc surface cavities, and the second mold base There is an exhaust part corresponding to the arc-shaped cavity of the semi-circular tube, and the exhaust part is arranged on the side of the arc-shaped cavity of the semi-circular tube that is away from the injection channel. The air part includes an exhaust line slot parallel to the semicircular tube arc surface cavity, and several exhaust communication channels arranged between the exhaust line slot and the semicircle tube arc surface cavity.

Preferably, any of the branch flow channels is provided with a glue injection point groove connected to the concave-convex curved surface table, and a glue injection point adjustment block is detachably arranged in the glue injection point groove.

Preferably, the injection port has a central sink cavity located in the central flow channel.

Preferably, the central flow channel is provided with two buffer injection chambers located on both sides of the injection port.

Preferably, the first mold base is provided with two connected glue injection flow positions arranged at intervals, and the second mold base is provided with two connected glue injection flow positions that are matched one by one. The glue injection channels, two of the glue injection channels are respectively communicated with the glue injection sources in the second mold base at equal distances.

Preferably, one side of the semicircular pipe structure is provided with a number of fitting piles arranged at intervals, and the fitting piles are provided with fitting hole grooves,

The first mold base is provided with a number of matching pile forming grooves for forming the matching piles, and the second mold base is provided with the matching pile forming grooves corresponding to the matching pile forming grooves for the said connecting piles. Fitting hole forming studs for fitting hole forming.

The beneficial effects of the utility model are mainly reflected in:

1. Adopt the design of uniform material storage tank on the branch flow channel and the exhaust part with several exhaust communication channels to meet the complete and uniform requirements of product injection molding, and the product qualification rate has been greatly improved.

2. It can change the type of glue injection point and adjust the glue injection port to adapt to the characteristics of various glue materials. The application is very flexible.

3. To meet the needs of synchronous supply injection molding in different regions, the efficiency of product injection molding has been greatly improved, and the phenomenon of lack of meat in injection molded parts has been basically eliminated.

Description of drawings

Other characteristics, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

Fig. 1 is the structural representation of the first mold base in the injection mold of the notebook computer semi-circular tube structure of the utility model.

Fig. 2 is a structural schematic diagram of the second mold base in the injection mold of the semi-circular tube structural part of the notebook computer of the present invention.

Fig. 3 is a schematic structural view of the demoulding injection molded body of the injection mold of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

The utility model provides an injection mold for a semicircular tube structural part of a notebook computer. As shown in FIG. 3 , the semicircular tube structural part of a notebook computer includes a semicircular tube wall 100 and a concave-convex surface arranged in the semicircular tube wall.

As shown in Figure 1 and Figure 2, the injection mold includes a first mold base 1 and a second mold base 2 with relative mold clamping displacement, and the first mold base 1 is provided with two mirror-symmetrically arranged concave-convex curved surface molding Concave-convex curved surface molding table 10, the second mold base 2 is provided with semi-circular tube arc surface cavity 20 corresponding to the concave-convex curved surface molding table one by one.

The traditional injection mold is the injection molding cavity formed by the concave-convex curved surface table 10 and the semi-circular tube arc surface cavity 20, and the molding is realized by multi-point injection, but the feed uniformity is poor, and it is difficult to meet the requirements of the injection molded parts. Precise injection molding is prone to lack of meat, etc., and the product qualification rate is low.

In this case, the first mold base 1 is provided with at least one connected glue injection flow position 3 located between the two concave-convex curved surface tables. Two equidistant branch flow channels 4 are arranged between the central flow channel 31 and any concave-convex curved surface platform, and any branch flow channel is provided with a uniform material storage tank 40 .

The second mold base 2 is provided with a glue injection channel 5 corresponding to the glue injection port connected to the glue injection flow position between the two semicircular tube arc surface cavities, and the second mold base 2 is provided with a semicircular The pipe arc surface cavity corresponds to the exhaust part 6 one by one. The exhaust part is arranged on the side of the corresponding semicircular pipe arc surface cavity away from the glue injection channel. Exhaust line slot 61, several exhaust communication passages 62 arranged between the exhaust line slot and the semi-circular pipe arc surface cavity.

The specific implementation process and principle description:

During the mold closing injection molding process, the injection molding liquid is supplied to the injection port 32 through the injection channel 5, and the injection molding liquid passes through the central flow channel 31, passes through the uniform material storage tank 40 along the equidistant branch flow channel 4, and then enters the injection molding cavity .

When the glue injection liquid enters the uniform material storage tank 40, a certain amount of emptying and matching is realized, and after the uniform emptying of the exhaust line groove 61 through several exhaust communication channels 62, the synchronous injection molding operation is performed again. The combination of material storage and emptying on both sides makes the extrusion material very uniform, the integrity and uniformity of product molding are guaranteed, and the product qualification rate is high.

In a specific embodiment, any branch flow channel 4 is provided with a glue injection point groove 7 connected with the concave-convex curved surface platform, and a glue injection point adjustment block is detachably arranged in the glue injection point groove.

To be specific, there are different types of injection molding for this workpiece with materials of different viscosities, that is, injection molding of different products with a variety of different materials, and there are differences in the size and position of glue injection points for materials with different viscosities. The dot groove 7 is equipped with different glue injection point adjustment blocks to meet the adjustment and coordination requirements of different glue injection points.

In a specific embodiment, the injection port 32 has a central counterbore located in the central channel. The central runner is provided with two injection buffer chambers located on both sides of the injection port.

That is, the central cavity, the injection buffer cavity, and the uniform material storage tank 40 are simultaneously adjusted and coordinated with the material transport air resistance, so that the injection molding extruded material is more uniform and synchronized.

In a specific embodiment, as shown in Fig. 1 and Fig. 2, the first mold base 1 is provided with two spaced-apart connected glue injection circulation positions, and the second mold base is provided with two connected glue injection flow positions. The phases are one-to-one corresponding to the glue injection channels, and the two glue injection channels are respectively connected with the glue injection sources in the second mold base at equal distances.

That is to say, two-stage synchronous injection molding is adopted, and the exhaust gas is used to achieve uniform injection molding, so that the product molding efficiency and molding accuracy are reliably guaranteed.

In a specific embodiment, one side of the semicircular pipe structure is provided with a plurality of fitting piles 110 arranged at intervals, and the fitting piles are provided with fitting holes 120 .

The first mold base is provided with a number of matching pile forming grooves 8 for forming the matching piles, and the second mold base is provided with matching holes for forming the matching hole grooves corresponding to the forming grooves of the matching piles. Groove forming boss 9.

In this way, the molding requirements of the specific mating pile 110 are met, and batch injection molding is efficient.

From the above description, it can be found that the injection mold of the semi-circular tube structural part of the notebook computer of the utility model adopts the design of the exhaust part with a uniform material storage tank on the branch flow channel and a number of exhaust communication channels, so as to meet the requirements of complete and uniform injection molding of the product. Product qualification rate has been greatly improved. It can change the type of glue injection point and adjust the glue injection port to adapt to the characteristics of various glue materials, and the application is very flexible. To meet the needs of synchronous supply injection molding in different regions, the efficiency of product injection molding has been greatly improved, and the phenomenon of lack of meat in injection molded parts has been basically eliminated.

The term "comprising" or any other similar term is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus/apparatus comprising a set of elements includes not only those elements but also other elements not expressly listed, or Also included are elements inherent in these processes, methods, articles, or devices/devices.

So far, the technical solution of the utility model has been described in conjunction with the preferred implementations shown in the accompanying drawings, however, those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific implementations. On the premise of not departing from the principle of the utility model, those skilled in the art can make equivalent changes or substitutions to relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the utility model.

Claims (6)

1. An injection mold of a semi-circular tube structure of a notebook computer, the semi-circular tube structure of the notebook computer comprises a semi-circular tube wall and a concave-convex curved surface arranged in the semi-circular tube wall,

the injection mold comprises a first mold base and a second mold base, wherein the first mold base and the second mold base are provided with relative mold closing displacement, the first mold base is provided with two concave-convex curved surface type tables which are arranged in a mirror symmetry mode and used for forming concave-convex curved surfaces, and the second mold base is provided with semicircular pipe cambered surface cavities which are arranged in one-to-one correspondence with the concave-convex curved surface type tables, and the injection mold is characterized in that:

the first die holder is provided with at least one communication glue injection circulation position between the two concave-convex curved surface tables, the communication glue injection circulation position comprises a central flow passage and a glue injection port arranged on the geometric center of the central flow passage, two equidistant branch flow passages are arranged between the central flow passage and any concave-convex curved surface table, a material homogenizing storage groove is arranged on any branch flow passage,

the second die holder is provided with a glue injection channel which is positioned between the two semicircular arc surface cavities and is correspondingly matched with a glue injection port communicated with a glue injection circulation position, the second die holder is provided with an exhaust part which is correspondingly matched with the semicircular arc surface cavities one by one, the exhaust part is arranged at one side, which is opposite to the semicircular arc surface cavities, of the glue injection channel, and the exhaust part comprises an exhaust wire slot which is parallel to the semicircular arc surface cavities and a plurality of exhaust communication channels which are arranged between the exhaust wire slot and the semicircular arc surface cavities.

2. The injection mold of a semicircular tube structural member for a notebook computer according to claim 1, wherein:

and any branch flow passage is provided with a glue injection point type groove communicated with the concave-convex curved surface type table, and a glue injection point adjusting type block is detachably arranged in the glue injection point type groove.

3. The injection mold of a semicircular tube structural member for a notebook computer according to claim 1, wherein:

the glue injection port is provided with a central sinking cavity positioned in the central runner.

4. An injection mold for a semi-circular tube structure of a notebook computer according to claim 3, wherein:

and two glue injection buffer cavities positioned at two sides of the glue injection port are arranged on the central runner.

5. The injection mold for a semi-circular tube structural member of a notebook computer according to any one of claims 1 to 4, wherein:

the first die holder is provided with two communicated glue injection circulation positions which are arranged at intervals, the second die holder is provided with two glue injection channels which are matched with the communicated glue injection circulation positions in a one-to-one correspondence mode, and the two glue injection channels are communicated with glue injection sources in the second die holder at equal intervals respectively.

6. The injection mold of the semicircular tube structural member for the notebook computer according to claim 5, wherein:

one side of the semicircular pipe structural member is provided with a plurality of matched piles which are arranged at intervals, the matched piles are provided with matched hole grooves,

the first die holder is provided with a plurality of matching pile forming grooves for matching pile forming, and the second die holder is provided with matching hole groove forming convex columns which are arranged in one-to-one correspondence with the matching pile forming grooves and used for matching hole groove forming.

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