A mobile phone shell injection mold with precise positioning mechanism

Abstract

The utility model relates to mould technical field, especially a kind of mobile phone shell injection mould with precision positioning mechanism, including base, the lower die is fixedly connected in base upper end, the left end and right end of base are both fixedly connected with two support rods, the top plate is fixedly connected with the upper portion between four support rods, and the control mechanism is fixedly installed in the top plate lower end.The utility model relates to a kind of mobile phone shell injection mould with precision positioning mechanism, start the cylinder of top plate lower end, cylinder output end pushes up the lower shift of upper die, four sliders of upper die left and right end slide along corresponding support rod by sleeve hole at this time, support rod provides vertical direction for upper die, avoid its lateral deviation, while the telescopic balance bar of upper end four corners of upper die is synchronous extension, ensure that upper die is evenly stressed, smoothly lower, effectively prevent upper die inclination, realize alignment, guarantee that mould positioning is accurate, reduce mould damage and production cost risk.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mobile phone case injection mold with a precise positioning mechanism. Background Technology

[0002] In the consumer electronics manufacturing sector, mobile phone cases, as core protective and decorative accessories for mobile phones, are experiencing a trend towards large-scale and diversified demand. Their production relies on injection molds for efficient mass production. Mobile phone cases require stringent dimensional accuracy and must be free of defects such as burrs and bubbles. This places extremely high demands on the mold closing positioning accuracy and stability of the injection molds. If the upper and lower molds are misaligned during mold closing, it will not only lead to the mobile phone case exceeding the molded size and failing to fit the phone assembly, but also easily cause mold cavity damage due to mold collisions, increasing production costs and extending the production cycle.

[0003] Traditional molds rely on a single cylinder to drive the upper mold's lifting and lowering, lacking auxiliary guiding and balancing structures. During mold closing, the upper mold is prone to tilting due to uneven force, leading to misalignment between the upper and lower molds. This results in phone cases with misaligned holes and irregular edges, severely impacting product yield. Therefore, we have introduced a phone case injection mold with a precise positioning mechanism. Utility Model Content

[0004] The main purpose of this utility model is to provide a mobile phone case injection mold with a precise positioning mechanism, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A mobile phone case injection mold with a precise positioning mechanism includes a base, a lower mold fixedly connected to the upper end of the base, two support rods fixedly connected to the left and right ends of the base, a top plate fixedly connected to the upper part of the four support rods, and a control mechanism fixedly installed at the lower end of the top plate.

[0006] Preferably, the control mechanism includes a cylinder, an upper mold is fixedly installed at the output end of the cylinder, telescopic balance bars are fixedly connected at the four corners of the upper end of the upper mold, two sliders are fixedly connected at the left and right ends of the upper mold, and each of the four sliders has a through hole at its upper end. The upper end of the cylinder and the upper ends of the four telescopic balance bars are fixedly connected to the lower end of the top plate.

[0007] By adopting the above technical solution: the cylinder provides power for the lifting and lowering of the upper mold, the four telescopic balance bars can balance the force on the upper mold and prevent the upper mold from tilting, and the slider and sleeve hole cooperate to provide a guiding basis for the movement of the upper mold, ensuring the stability of the upper mold lifting and lowering.

[0008] Preferably, the extension length of each of the four telescopic balance bars is the same as the extension length of the cylinder.

[0009] By adopting the above technical solution, the telescopic balance bar and the cylinder telescopic length are consistent, ensuring that the upper mold always remains horizontal during the lifting process, avoiding tilting of the upper mold due to asynchronous telescopic extension, and further improving the mold closing positioning accuracy.

[0010] Preferably, the four support rods are movably sleeved in the corresponding four sleeve holes.

[0011] By adopting the above technical solution: the fitting of the support rod and the sleeve hole restricts the lateral displacement of the upper mold, so that the upper mold can only move in the vertical direction, preventing the upper mold from shifting when the mold is closed, and ensuring the precise alignment of the upper mold and the lower mold.

[0012] Preferably, the upper mold includes an upper mold body, a sealing frame is fixedly connected to the lower edge of the upper mold body, and the upper end of the upper mold body is fixedly connected to the output end of the cylinder and the lower ends of the four telescopic balance rods.

[0013] By adopting the above technical solution: the upper end of the upper mold body is fixedly connected with a sprue for sprue injection.

[0014] Preferably, the lower mold includes a lower mold body, a mold cavity is formed in the middle of the upper end of the lower mold body, a sealing groove is formed at the upper edge of the lower mold body, and the lower end of the lower mold body is fixedly connected to the upper end of the base.

[0015] By adopting the above technical solution: the lower mold body provides a mold cavity for the molding of the mobile phone case, which meets the shape requirements of the mobile phone case, and the sealing groove is adapted to the upper mold sealing frame, which provides a basis for mold closing and sealing.

[0016] Preferably, the upper mold body and the lower mold body are distributed in a vertically corresponding manner, and the sealing frame is movably sleeved in the sealing groove.

[0017] By adopting the above technical solution, the upper mold body and the lower mold body correspond to each other, ensuring precise closure of the mold cavity. The sealing frame and the sealing groove are fitted together to achieve a tight seal, preventing leakage of injection molding materials and the generation of flash, thereby improving the molding quality of mobile phone cases.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. In this utility model, the cylinder at the lower end of the top plate is first activated, and the cylinder output pushes the upper mold to move downward. At this time, the four sliders at the left and right ends of the upper mold slide along the corresponding support rods through the sleeve holes. The support rods provide vertical guidance for the upper mold to prevent it from shifting laterally. At the same time, the telescopic balance rods at the four corners of the upper mold extend and retract synchronously to ensure that the upper mold is subjected to uniform force and moves downward smoothly, effectively preventing the upper mold from tilting and achieving alignment. As the upper mold moves downward, the sealing frame at the lower end of the upper mold body is embedded in the sealing groove of the lower mold body to form a tight seal, preventing material leakage during subsequent injection molding. Then, the molten material is injected into the mold cavity of the lower mold body. After cooling and forming, the cylinder drives the upper mold to move upward, and the sliders and telescopic balance rods reset synchronously. Finally, the phone case is removed. In the whole process, the support rods, sliders, and telescopic balance rods ensure accurate mold closing and positioning, reducing mold damage and production cost risks. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a mobile phone case injection mold with a precise positioning mechanism according to the present invention. Figure 2 This is a schematic diagram of the lower mold of a mobile phone case injection mold with a precise positioning mechanism according to the present invention. Figure 3 This is a schematic diagram of the control mechanism of a mobile phone case injection mold with a precise positioning mechanism according to the present invention. Figure 4 This is a schematic diagram of the upper mold of a mobile phone case injection mold with a precise positioning mechanism according to this utility model.

[0020] In the diagram: 1. Base; 2. Lower mold; 3. Support rod; 4. Top plate; 5. Control mechanism; 21. Lower mold body; 22. Mold cavity; 23. Sealing groove; 51. Cylinder; 52. Upper mold; 53. Telescopic balance bar; 54. Slider; 55. Sleeve hole; 521. Upper mold body; 522. Sealing frame. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0024] Please see Figure 1-4 This utility model provides a technical solution: A mobile phone case injection mold with a precise positioning mechanism includes a base 1, a lower mold 2 fixedly connected to the upper end of the base 1, two support rods 3 fixedly connected to the left and right ends of the base 1, a top plate 4 fixedly connected to the upper part of the four support rods 3, and a control mechanism 5 fixedly installed at the lower end of the top plate 4.

[0025] In this embodiment, the control mechanism 5 includes a cylinder 51. An upper mold 52 is fixedly installed at the output end of the cylinder 51. Telescopic balance rods 53 are fixedly connected to the four corners of the upper end of the upper mold 52. Two sliders 54 are fixedly connected to the left and right ends of the upper mold 52. Each of the four sliders 54 has a through hole 55 at its upper end. The upper end of the cylinder 51 and the upper ends of the four telescopic balance rods 53 are fixedly connected to the lower end of the top plate 4. The telescopic length of the four telescopic balance rods 53 is the same as the telescopic length of the cylinder 51. The four support rods 3 are respectively movably sleeved in the corresponding four holes 55. The upper mold 52 includes an upper mold body 521, with a sealing frame 522 fixedly connected to the lower edge of the upper mold body 521. The upper end of the upper mold body 521 is fixedly connected to the output end of the cylinder 51 and the lower ends of the four telescopic balance rods 53. The lower mold 2 includes a lower mold body 21, with a mold cavity 22 in the middle of the upper end of the lower mold body 21. A sealing groove 23 is opened at the upper edge of the lower mold body 21. The lower end of the lower mold body 21 is fixedly connected to the upper end of the base 1. The upper mold body 521 and the lower mold body 21 are distributed vertically and vertically, and the sealing frame 522 is movably fitted into the sealing groove 23.

[0026] It should be noted that this utility model is a mobile phone case injection mold with a precise positioning mechanism. In use, firstly, the cylinder 51 fixedly installed at the lower end of the top plate 4 in the control mechanism 5 is activated. The output end of the cylinder 51 pushes the upper mold 52 downwards. At this time, the four sliders 54 at the left and right ends of the upper mold 52 slide along the corresponding four support rods 3. Simultaneously, the telescopic balance rods 53 at the four corners of the upper mold 52 extend downwards to ensure the upper mold 52 moves smoothly downwards. As the upper mold 52 continues to move downwards, the sealing frame 522 at the lower edge of the upper mold body 521 gradually embeds into the sealing groove 23 at the upper edge of the lower mold body 21 of the lower mold 2, thus realizing the positioning of the upper mold 52. The upper mold body 521 and the lower mold body 21 are sealed together, forming a closed injection space. Then, the molten injection material is injected into the mold cavity 22 at the upper middle part of the lower mold body 21 through the injection port on the upper mold body 521 until the material fills the mold cavity 22. After the material cools and forms a mobile phone case in the mold cavity 22, the output end of the control cylinder 51 retracts, driving the upper mold 52 to move upward. The slider 54 slides upward along the support rod 3, and the telescopic balance rod 53 retracts and resets synchronously. Finally, after the upper mold 52 is completely separated from the lower mold 2, the formed mobile phone case can be taken out from the mold cavity 22 of the lower mold body 21.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mobile phone case injection mold with a precision positioning mechanism, comprising a base (1), characterized in that: The base (1) is fixedly connected to the upper end of the lower mold (2), and the left and right ends of the base (1) are fixedly connected to two support rods (3). The upper part of the four support rods (3) is fixedly connected to a top plate (4), and the lower end of the top plate (4) is fixedly installed with a control mechanism (5). The control mechanism (5) includes a cylinder (51), and an upper mold (52) is fixedly installed at the output end of the cylinder (51). Telescopic balance rods (53) are fixedly connected at the four corners of the upper end of the upper mold (52). Two sliders (54) are fixedly connected to the left and right ends of the upper mold (52). Each of the four sliders (54) has a through hole (55) at the top. The upper end of the cylinder (51) and the upper end of the four telescopic balance rods (53) are fixedly connected to the lower end of the top plate (4).

2. The mobile phone case injection mold with a precise positioning mechanism according to claim 1, characterized in that: The telescopic lengths of the four telescopic balance bars (53) are the same as the telescopic lengths of the cylinder (51).

3. A mobile phone case injection mold with a precise positioning mechanism according to claim 1, characterized in that: The four support rods (3) are respectively movably sleeved in the corresponding four sleeve holes (55).

4. A mobile phone case injection mold with a precise positioning mechanism according to claim 1, characterized in that: The upper mold (52) includes an upper mold body (521), and a sealing frame (522) is fixedly connected to the lower edge of the upper mold body (521). The upper end of the upper mold body (521) is fixedly connected to the output end of the cylinder (51) and the lower ends of the four telescopic balance rods (53).

5. A mobile phone case injection mold with a precise positioning mechanism according to claim 1, characterized in that: The lower mold (2) includes a lower mold body (21), a mold cavity (22) is opened in the middle of the upper end of the lower mold body (21), a sealing groove (23) is opened at the upper edge of the lower mold body (21), and the lower end of the lower mold body (21) is fixedly connected to the upper end of the base (1).

6. A mobile phone case injection mold with a precise positioning mechanism according to claim 4, characterized in that: The upper mold body (521) and the lower mold body (21) are distributed in a corresponding manner, and the sealing frame (522) is movably sleeved in the sealing groove (23).

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