Injection molding device for mobile phone protective shell

Abstract

The utility model discloses a mobile phone protective shell injection molding device, and particularly relates to the technical field of mobile phone protective shell injection molding, the mobile phone protective shell injection molding device comprises a transverse plate, a lower mold and an upper mold, the bottom end of the lower mold is fixedly connected with the transverse plate, the upper mold is located at the top of the lower mold, and a supporting frame is movably arranged at the bottom of the transverse plate; a vibration assembly is arranged between the supporting frame and the transverse plate and comprises a second stepping motor, a rotating shaft, an eccentric plate, two U-shaped plates, two second lead screws, a plurality of threaded sleeves and a plurality of vertical rods. The second stepping motor works to drive the rotating shaft and the eccentric plate to rotate, the eccentric plate can drive the transverse plate to move up and down in a reciprocating mode, so that raw materials are evenly distributed between the lower die and the upper die, meanwhile, the rotating shaft drives the fan blades to rotate, air is discharged through the two air outlet buckets, and the raw materials between the lower die and the upper die are air-cooled. The operation is simple, and raw materials can be quickly and uniformly distributed between the lower mold and the upper mold.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone protective case injection molding technology, and more specifically, to a mobile phone protective case injection molding device. Background Technology

[0002] A phone case is a custom-designed outer shell for a mobile phone, primarily used to protect it from external damage such as impacts, scratches, and drops. It can also serve as a decorative element, fulfilling users' individual needs. The process involves heating thermoplastic granules to a molten state, then injecting the molten material into a pre-designed mold cavity through the screw of an injection molding machine. After the material cools and solidifies, a phone case is formed that conforms to the shape of the mold cavity.

[0003] A search revealed that Chinese patent CN221834891U discloses an injection molding device for mobile phone case production, including a main body and an injection port. Electric cylinders are installed on both the left and right sides of the main body, and through slots are opened on both the left and right sides of the main body to allow the output ends of the electric cylinders to move. The output ends of the two sets of electric cylinders are respectively fixedly installed with mounting plates for installing injection molds. This utility model achieves automatic demolding by using a demolding scraper and electric cylinders in combination, replacing the traditional manual demolding method and improving work efficiency.

[0004] When the above-mentioned injection molding device is in use, the raw material is added to the injection port, and the punch and die are closed by the electric cylinder and injection is performed. However, when the raw material is injected, it is difficult for the raw material to be distributed quickly and evenly in the mold. Uneven distribution of raw material will result in inconsistent thickness in different parts of the mobile phone protective case. In areas with thinner thickness, the strength will be reduced, and problems such as cracking and deformation will easily occur. In areas with thicker thickness, defects such as shrinkage and bubbles may occur, affecting the appearance and performance of the product. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a mobile phone protective case injection molding device, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mobile phone protective case injection molding device, comprising a horizontal plate, a lower mold, and an upper mold, wherein the bottom end of the lower mold is fixedly connected to the horizontal plate, the upper mold is located at the top of the lower mold, a support frame is movably arranged at the bottom of the horizontal plate, and a vibration assembly is arranged between the support frame and the horizontal plate, the vibration assembly comprising a second stepper motor, a rotating shaft, an eccentric plate, two U-shaped plates, two second lead screws, multiple threaded sleeves, and multiple uprights, the second stepper motor is fixedly installed on one side of the support frame, and the output shaft end of the second stepper motor is fixedly connected to the rotating shaft, both ends of the rotating shaft are movably connected to the support frame through bearings, the eccentric plate is fixedly sleeved on the rotating shaft, the top ends of the two U-shaped plates are fixedly connected to the horizontal plate, and the bottom ends of the two second lead screws and multiple uprights respectively penetrate the two U-shaped plates and are fixedly connected to the support frame.

[0007] Furthermore, the multiple threaded sleeves are respectively movably sleeved on the two second lead screws, and the multiple threaded sleeves are respectively located at the top and bottom of the two U-shaped plates.

[0008] As can be seen, in the above technical solution, when there is no need to vibrate the lower mold, the horizontal plate is moved upward and away from the eccentric plate, and the four threaded sleeves are rotated in sequence and made to contact the two U-shaped plates respectively, thereby limiting the horizontal plate. Similarly, the distance between the horizontal plate and the eccentric plate can be adjusted according to the requirements.

[0009] Furthermore, a fan blade is fixedly connected to the other end of the rotating shaft, and an air inlet is movably provided on one side of the fan blade, with the top of the air inlet fixedly connected to the horizontal plate.

[0010] Furthermore, a three-way pipe is fixedly connected to the other side of the air inlet hopper, and air outlet hoppers are fixedly connected to both ends of the three-way pipe, with the bottom ends of both air outlet hoppers fixedly connected to the horizontal plate.

[0011] It can be seen that the above technical solution facilitates air cooling of the raw material between the lower mold and the upper mold.

[0012] Furthermore, the upper mold is provided with a moving component, which includes two side frames, a first stepper motor, a first lead screw, two sliders, and a limit rod.

[0013] Furthermore, the bottom ends of both side frames are fixedly connected to the horizontal plate, the first stepper motor is fixedly installed on the top of one of the side frames, and the output shaft end of the first stepper motor is fixedly connected to the first lead screw. The first lead screw is threadedly connected to one of the sliders, and the first lead screw is movably connected to one of the side frames through a bearing. The opposing sides of the two sliders are fixedly connected to the upper mold.

[0014] It can be seen that the above technical solution is designed to facilitate the adjustment of the position of the upper mold.

[0015] Furthermore, the limiting rod is fixedly installed inside another side frame, and the bottom end of the limiting rod passes through another slider.

[0016] As can be seen, in the above technical solution, another slider and a limiting rod work together to restrict the rotation of the upper mold.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] 1. This utility model uses a second stepper motor to drive the rotating shaft and eccentric plate to rotate. The eccentric plate can drive the horizontal plate to move up and down reciprocally, so that the raw material is evenly distributed between the lower mold and the upper mold. At the same time, the rotating shaft drives the fan blade to rotate, and the air is discharged through two air outlets to cool the raw material between the lower mold and the upper mold. The operation is simple and the raw material can be quickly and evenly distributed between the lower mold and the upper mold.

[0019] 2. This utility model uses a stepper motor to drive the first lead screw to rotate. The first lead screw can drive the two sliders and the upper mold to move upward. When the upper mold initially moves away from the lower mold, the vibration component can quickly demold the mobile phone protective case in the lower mold. When the upper mold moves away from the lower mold completely, the mobile phone protective case in the lower mold can be removed. The operation is simple and convenient. Attached Figure Description

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a bottom view of the overall structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the assembly structure of the support frame and vibration component of this utility model;

[0024] Figure 4 This is a schematic diagram of the assembly structure of the horizontal plate and the moving component of this utility model;

[0025] Figure 5 This is a schematic diagram of the assembly structure of the horizontal plate and the air inlet hopper of this utility model.

[0026] In the diagram: 1. Horizontal plate; 2. Lower mold; 3. Upper mold; 4. Moving component; 5. Support frame; 6. Vibration component; 7. Air outlet duct; 8. T-pipe; 9. Air inlet duct; 401. Side frame; 402. First stepper motor; 403. First lead screw; 404. Slider; 405. Limiting rod; 601. Second stepper motor; 602. Rotating shaft; 603. Eccentric plate; 604. U-shaped plate; 605. Second lead screw; 606. Threaded sleeve; 607. Vertical pole; 608. Fan blade. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Refer to the instruction manual appendix Figure 1-5 This embodiment of a mobile phone protective case injection molding device includes a horizontal plate 1, a lower mold 2, and an upper mold 3. The bottom end of the lower mold 2 is fixedly connected to the horizontal plate 1, and the upper mold 3 is located at the top of the lower mold 2. A support frame 5 is movably arranged at the bottom of the horizontal plate 1, and a vibration component 6 is arranged between the support frame 5 and the horizontal plate 1. The vibration component 6 includes a second stepper motor 601, a rotating shaft 602, an eccentric plate 603, two U-shaped plates 604, two second lead screws 605, multiple threaded sleeves 606, and multiple... The upright pole 607 and the second stepper motor 601 are fixedly installed on one side of the support frame 5. The output shaft end of the second stepper motor 601 is fixedly connected to the rotating shaft 602. Both ends of the rotating shaft 602 are movably connected to the support frame 5 through bearings. The eccentric plate 603 is fixedly sleeved on the rotating shaft 602. The top ends of the two U-shaped plates 604 are fixedly connected to the horizontal plate 1. The bottom ends of the two second lead screws 605 and the multiple upright poles 607 pass through the two U-shaped plates 604 respectively and are fixedly connected to the support frame 5.

[0029] Furthermore, multiple threaded sleeves 606 are movably sleeved on two second lead screws 605, and the multiple threaded sleeves 606 are located at the top and bottom of two U-shaped plates 604 respectively. The other end of the rotating shaft 602 is fixedly connected to a fan blade 608. An air inlet 9 is movably arranged on one side of the fan blade 608, and the top of the air inlet 9 is fixedly connected to the horizontal plate 1. A three-way pipe 8 is fixedly connected to the other side of the air inlet 9. Both ends of the three-way pipe 8 are fixedly connected to air outlet hoppers 7, and the bottom ends of the two air outlet hoppers 7 are fixedly connected to the horizontal plate 1.

[0030] Furthermore, the upper mold 3 is provided with a moving component 4, which includes two side frames 401, a first stepper motor 402, a first lead screw 403, two sliders 404, and a limiting rod 405. The bottom ends of the two side frames 401 are fixedly connected to the horizontal plate 1. The first stepper motor 402 is fixedly installed on the top of one of the side frames 401, and the output shaft end of the first stepper motor 402 is fixedly connected to the first lead screw 403. The first lead screw 403 is threadedly connected to one of the sliders 404, and the first lead screw 403 and one of the side frames 401 are movably connected through a bearing. The opposing sides of the two sliders 404 are fixedly connected to the upper mold 3. The limiting rod 405 is fixedly installed inside the other side frame 401, and the bottom end of the limiting rod 405 passes through the other slider 404.

[0031] Once the phone case is formed, the first stepper motor 402 is activated, driving the first lead screw 403 to rotate. Since one slider 404 is threadedly connected to the first lead screw 403, and the other slider 404 and the limiting rod 405 cooperate to restrict the rotation of the upper mold 3, the first lead screw 403 can drive the two sliders 404 and the upper mold 3 to move upward. When the upper mold 3 initially moves away from the lower mold 2, the phone case in the lower mold 2 can be quickly demolded by the vibration component 6. When the upper mold 3 moves away from the lower mold 2 completely, the phone case in the lower mold 2 is removed. The operation is simple and convenient.

[0032] The usage method of this embodiment is as follows:

[0033] In operation, molten raw material is injected into the space between the lower mold 2 and the upper mold 3 using an injection molding machine. The second stepper motor 601 is then activated, driving the rotating shaft 602 and the eccentric plate 603 to rotate. The eccentric plate 603 causes the horizontal plate 1 to move up and down reciprocally, vibrating the lower mold 2 and ensuring the raw material is evenly distributed between the lower mold 2 and the upper mold 3. Simultaneously, the two U-shaped plates 604 and four uprights 607 work together to prevent deflection of the horizontal plate 1 during vertical movement. At the same time, the rotating shaft 602 drives the fan blades 608 to rotate. The rotation of 608 generates airflow, which enters the three-way pipe 8 through the air inlet 9 and is finally discharged through the two air outlet 7. This airflow cools the raw material between the lower mold 2 and the upper mold 3. The operation is simple, and the raw material can be quickly and evenly distributed between the lower mold 2 and the upper mold 3. When there is no need to vibrate the lower mold 2, the horizontal plate 1 is moved upward and away from the eccentric plate 603. The four threaded sleeves 606 are rotated in sequence and made to contact the two U-shaped plates 604 respectively, thereby limiting the horizontal plate 1. Similarly, the distance between the horizontal plate 1 and the eccentric plate 603 can be adjusted as needed.

[0034] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mobile phone protective case injection molding device, comprising a horizontal plate (1), a lower mold (2) and an upper mold (3), wherein the bottom end of the lower mold (2) is fixedly connected to the horizontal plate (1), and the upper mold (3) is located at the top of the lower mold (2), characterized in that: A support frame (5) is movably mounted on the bottom of the horizontal plate (1). A vibration assembly (6) is arranged between the support frame (5) and the horizontal plate (1). The vibration assembly (6) includes a second stepper motor (601), a rotating shaft (602), an eccentric plate (603), two U-shaped plates (604), two second lead screws (605), multiple threaded sleeves (606), and multiple uprights (607). The second stepper motor (601) is fixedly mounted on one side of the support frame (5). The output shaft end of the second stepper motor (601) is fixedly connected to the rotating shaft (602). Both ends of the rotating shaft (602) are movably connected to the support frame (5) through bearings. The eccentric plate (603) is fixedly sleeved on the rotating shaft (602). The top ends of the two U-shaped plates (604) are fixedly connected to the horizontal plate (1). The bottom ends of the two second lead screws (605) and multiple uprights (607) pass through the two U-shaped plates (604) respectively and are fixedly connected to the support frame (5).

2. The mobile phone protective case injection molding apparatus according to claim 1, characterized in that: Multiple threaded sleeves (606) are movably sleeved on two second lead screws (605), and the multiple threaded sleeves (606) are located at the top and bottom of two U-shaped plates (604).

3. The mobile phone protective case injection molding apparatus according to claim 1, characterized in that: The other end of the rotating shaft (602) is fixedly connected to a fan blade (608), and an air inlet hopper (9) is movably provided on one side of the fan blade (608), and the top of the air inlet hopper (9) is fixedly connected to the horizontal plate (1).

4. The mobile phone protective case injection molding apparatus according to claim 3, characterized in that: The air inlet hopper (9) is fixedly connected to a three-way pipe (8) on the other side. Both ends of the three-way pipe (8) are fixedly connected to air outlet hoppers (7), and the bottom ends of the two air outlet hoppers (7) are fixedly connected to the horizontal plate (1).

5. The mobile phone protective case injection molding apparatus according to claim 1, characterized in that: The upper mold (3) is provided with a moving component (4), which includes two side frames (401), a first stepper motor (402), a first lead screw (403), two sliders (404) and a limiting rod (405).

6. The mobile phone protective case injection molding apparatus according to claim 5, characterized in that: The bottom ends of both side frames (401) are fixedly connected to the horizontal plate (1). The first stepper motor (402) is fixedly installed on the top of one of the side frames (401), and the output shaft end of the first stepper motor (402) is fixedly connected to the first lead screw (403). The first lead screw (403) is threadedly connected to one of the sliders (404), and the first lead screw (403) is movably connected to one of the side frames (401) through a bearing. The opposing sides of the two sliders (404) are fixedly connected to the upper mold (3).

7. The mobile phone protective case injection molding apparatus according to claim 5, characterized in that: The limiting rod (405) is fixedly installed inside another side frame (401), and the bottom end of the limiting rod (405) passes through another slider (404).

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