A mobile phone shell spray-free in-mold cutting injection mold

Abstract

The utility model relates to injection mold technical field especially a kind of mobile phone shell exempt from spraying in-mold cutting injection mold, including bottom plate, fixed mould and movable mould, cutting structure is provided on the movable mould, mould block is provided on the fixed mould, inside flanging groove structure is provided on the fixed mould and the mould block, the drive structure that is cooperated with inside flanging groove structure is provided in the fixed mould, the top column is inserted in the thickness on the mould block, the side of the fixed mould is provided with the cylinder connected with the top column, inside flanging groove structure is used for forming inside flanging for mobile phone shell by being arranged, drive structure is driven slider and stop block to move, to eliminate inside flanging groove, to avoid the inside flanging of mobile phone shell and inside flanging groove clamping damage mobile phone shell when mobile phone shell is taken out, by setting drive structure synchronous control multiple sliders move, avoid the moving amplitude of moving block and stop block different loss mobile phone shell.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an in-mold injection mold for mobile phone cases that does not require painting. Background Technology

[0002] Phone cases are decorative items used to protect or decorate the appearance of mobile phones. With the rapid development of technology, the technology beauty industry has emerged as a new industry. Fashionable IT brands have diversified with the diversification of the market and the increase in mobile phone brands and functions. Phone cases can be classified by material, such as PC cases, leather, silicone, cloth, hard plastic, leather cases, tempered glass metal cases, soft plastic, velvet, and silk.

[0003] Most existing mobile phone cases are made by injection molding. To prevent residual material from the injection port from adhering to the product during production, some injection molds are designed with an internal cutting structure. For example, Chinese Patent Publication No. CN214188243U discloses "An internal cutting injection mold for 5G mobile phone cases without spraying". It is designed with a slot, U-shaped plate, push block, long rod, connecting plate, first spring, connecting block and blade. After the product cools down, the push block is pushed to control the movement of the blade. The blade can cut off the residual material attached to the product, which improves production efficiency. When the product needs to be removed, the moving mold can drive the fixed rod to move during the return to the non-working position. The fixed rod can push the product attached to the fixed mold off.

[0004] However, in actual production, in order to prevent the phone case from separating from the phone, the edge of the phone case is folded inward and wraps around the side of the phone to fix the phone. When separating the phone case from the mold block, the inward folded edge is tightly connected to the mold block, which can easily damage the phone case and increase the defect rate. Utility Model Content

[0005] The purpose of this invention is to solve the shortcomings of existing technologies, such as the tight connection between the inner flange of the phone case and the mold block, which easily damages the phone case and increases the defect rate. Therefore, this invention proposes a non-painted in-mold injection mold for phone cases.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Design a paint-free in-mold injection mold for mobile phone cases, including a base plate, a fixed mold, and a moving mold. The moving mold is provided with a cutting structure, the fixed mold is provided with a mold block, the fixed mold and the mold block are provided with an inner flange groove structure, the fixed mold is provided with a driving structure that cooperates with the inner flange groove structure, the mold block is provided with a top post, and a cylinder connected to the top post is provided on one side of the fixed mold.

[0007] Furthermore, the inner flange groove structure includes four mounting grooves formed on the mold block, and each mounting groove is slidably provided with a stop block. The four stop blocks cooperate with the fixed mold and the mold block to form an inner flange groove.

[0008] Furthermore, the fixed mold has a sliding groove corresponding to the mounting groove, and a slider is provided in the sliding groove, which is fixedly connected to the stop block.

[0009] Furthermore, the drive structure includes drive wheels that are poweredly connected to the four sliders, and toothed rings are sleeved on the outside of the drive wheels. Multiple gears that mesh with the toothed rings are rotatably arranged inside the fixed mold.

[0010] Furthermore, a drive motor is provided on one side of the fixed mold, and the output shaft of the drive motor is poweredly connected to one of the gears.

[0011] Furthermore, the drive wheel is provided with a planar thread, and each slider is fixedly provided with a connecting part that mates with the planar thread.

[0012] The beneficial effects of the paint-free in-mold injection mold for mobile phone cases proposed in this utility model are as follows: In this utility model, an inner flange groove structure is set to form an inner flange on the phone case. After injection molding, the slider and stop block are moved by the driving structure to eliminate the inner flange groove, thereby avoiding damage to the phone case when the phone case is removed due to the inner flange and inner flange groove getting stuck together. Secondly, in this invention, by setting a driving structure to synchronously control the movement of multiple sliders, the different movement ranges of the moving block and the stop block are avoided, thus preventing damage to the phone case and reducing the defect rate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an in-mold injection mold for a mobile phone case that is free from spraying. Figure 2 This is a schematic diagram of the drive wheel of this utility model; Figure 3 This is a schematic diagram of the structure of the stop block of this utility model; Figure 4 This is a schematic diagram of the gear structure of this utility model.

[0014] In the diagram: 1. Base plate; 2. Fixed mold; 3. Moving mold; 4. Cutting structure; 5. Mold block; 6. Inner flange groove structure; 61. Stop block; 62. Inner flange groove; 63. Slider; 7. Drive structure; 71. Drive wheel; 72. Gear ring; 73. Gear; 74. Drive motor; 75. Flat thread; 76. Connector; 8. Top column; 9. Cylinder. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-4 A paint-free in-mold injection mold for mobile phone cases includes a base plate 1, a fixed mold 2, and a movable mold 3. The movable mold 3 is provided with a cutting structure 4, the fixed mold 2 is provided with a mold block 5, the fixed mold 2 and the mold block 5 are provided with an inner flange groove structure 6, the fixed mold 2 is provided with a driving structure 7 that cooperates with the inner flange groove structure 6, the mold block 5 is provided with a top post 8, and a cylinder 9 connected to the top post 8 is provided on one side of the fixed mold 2.

[0017] In this invention, an inner flange groove structure 6 is provided to form an inner flange on the phone case. After injection molding, the inner flange groove structure 6 is deformed by a drive structure 7, thereby eliminating the inner flange groove. Then, the top column 8 is moved by a cylinder 9 to push the phone case out, thus avoiding damage to the phone case when the inner flange and inner flange groove are jammed together.

[0018] Furthermore, in this embodiment, the inner flange groove structure 6 includes four mounting grooves formed on the mold block 5. Each mounting groove has a stop block 61 slidably disposed therein. The four stop blocks 61 cooperate with the fixed mold 2 and the mold block 5 to form an inner flange groove 62. When the phone case is formed, the inner flange groove 62 causes the phone case to form an inner flange. The stop blocks 61 are moved by the driving structure 7 to eliminate the inner flange groove 62, thereby avoiding damage to the phone case when the phone case is removed because the inner flange of the phone case is stuck to the inner flange groove 62.

[0019] Furthermore, in this embodiment, the fixed mold 2 is provided with a sliding groove corresponding to the mounting groove, and a slider 63 is provided in the sliding groove. The slider 63 is fixedly connected to the stop block 61. The slider 63 drives the stop block 61 to move, changing the position of the stop block 61, thereby forming an inner flange groove 62 or canceling the inner flange groove 62. After the inner flange groove 62 is eliminated, the cylinder drives the top column 8 to move and push the phone case down.

[0020] It should be noted that, in this embodiment, the drive structure 7 includes a drive wheel 71 that is poweredly connected to the four sliders 63. A toothed ring 72 is sleeved on the outside of the drive wheel 71. A plurality of gears 73 that mesh with the toothed ring 72 are rotatably arranged inside the fixed mold 2. The gears 73 support the toothed ring 72 and the drive wheel 71, and drive the drive wheel 71 to rotate through the gears 73. The rotation of the drive wheel 71 drives the plurality of sliders 63 to move.

[0021] Furthermore, in this embodiment, a drive motor 74 is provided on one side of the fixed mold 2. The output shaft of the drive motor 74 is poweredly connected to a gear 73. The drive motor 74 drives the gear 73 to rotate, and the gear 73 drives the drive wheel 71 to rotate.

[0022] More specifically, in this embodiment, the drive wheel 71 is provided with a planar thread 75, and each slider 63 is fixedly provided with a connecting piece 76 that cooperates with the planar thread 75. When the drive wheel 71 rotates, the planar thread 75 rotates accordingly, driving the connecting piece 76 and the slider 63 to move, thereby driving the stop block 61 to move.

[0023] Working method: During operation, the drive motor 74 drives the gear 73 to rotate, the gear 73 drives the drive wheel 71 to rotate, and when the drive wheel 71 rotates, the planar thread 75 rotates accordingly, driving the connecting piece 76 and the slider 63 to move, thereby driving the stop block 61 to move and change the position of the stop block 61, thereby forming the inner flange groove 62 or canceling the inner flange groove 62. After the inner flange groove 62 is eliminated, the cylinder drives the top column 8 to move and push the phone case down.

[0024] 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 paint-free in-mold injection mold for mobile phone cases, comprising a base plate (1), a fixed mold (2), and a movable mold (3), wherein the movable mold (3) is provided with a cutting structure (4), characterized in that, The fixed mold (2) is provided with a mold block (5), the fixed mold (2) and the mold block (5) are provided with an inner flange groove structure (6), the fixed mold (2) is provided with a drive structure (7) that cooperates with the inner flange groove structure (6), the mold block (5) is provided with a top column (8), and a cylinder (9) connected to the top column (8) is provided on one side of the fixed mold (2).

2. The in-mold injection mold for a mobile phone case without paint spraying as described in claim 1, characterized in that: The inner flange groove structure (6) includes four mounting grooves opened on the mold block (5), and a stop block (61) is slidably arranged in each mounting groove. The four stop blocks (61) cooperate with the fixed mold (2) and the mold block (5) to form an inner flange groove (62).

3. The in-mold injection mold for a mobile phone case without paint spraying as described in claim 2, characterized in that: The fixed mold (2) has a sliding groove corresponding to the mounting groove, and a slider (63) is provided in the sliding groove. The slider (63) is fixedly connected to the stop block (61).

4. The in-mold injection mold for a mobile phone case without paint spraying as described in claim 3, characterized in that: The drive structure (7) includes a drive wheel (71) that is poweredly connected to the four sliders (63). A toothed ring (72) is sleeved on the outside of the drive wheel (71). A plurality of gears (73) that mesh with the toothed ring (72) are rotatably arranged inside the fixed mold (2).

5. The in-mold injection mold for a mobile phone case without painting, as described in claim 4, is characterized in that: A drive motor (74) is provided on one side of the fixed mold (2), and the output shaft of the drive motor (74) is poweredly connected to a gear (73).

6. The in-mold injection mold for a mobile phone case without paint spraying as described in claim 4, characterized in that: The drive wheel (71) is provided with a planar thread (75), and each slider (63) is fixedly provided with a connecting piece (76) that cooperates with the planar thread (75).

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