Injection mold for plastic part of remote controller

Abstract

The invention provides an injection mold for a remote controller plastic part, and belongs to the technical field of remote controller production. The injection mold for the remote controller plastic part comprises a lower mold and an upper mold, the upper mold is coupled with the lower mold, an assembly cavity is formed in the top of the lower mold, a mold core is installed in the assembly cavity, a first forming cavity is formed in the top of the mold core, and a second forming cavity is formed in the bottom of the mold core. And the first forming cavity and the second forming cavity can be switched for use. The assembling cavity is formed in the lower mold, the mold core is installed in the assembling cavity, the first forming cavity is formed in the top of the mold core, and the second forming cavity is formed in the bottom of the mold core, so that forming of the upper shell and the lower shell of the remote controller can be achieved, and when the lower shell of the remote controller is produced, the first forming cavity faces upwards; and the second forming cavity is arranged upwards, so that the application range of the mold core is widened, and the use of materials is reduced.

Description

Technical Field

[0001] This application relates to the field of remote control production. Specifically, it relates to an injection mold for plastic parts of a remote control. Background Art

[0002] A remote control is a wireless transmitting device that encodes button information through modern digital encoding technology, emits light waves through an infrared diode, and the infrared receiver of the receiver converts the received infrared signal into an electrical signal, which is then decoded by the processor to demodulate the corresponding instructions to achieve the required operation requirements for controlling devices such as set-top boxes. The housing of the remote control includes an upper housing and a lower housing, and the upper housing and the lower housing are injection-molded in different injection molds. Therefore, when injecting the upper housing and the lower housing, different mold cores need to be replaced. Thus, when the existing injection molds are in use, two types of mold cores need to be equipped to meet the injection molding of the upper housing and the lower housing of the remote control, resulting in a large amount of material usage. For this reason, we propose an injection mold for plastic parts of a remote control. Summary of the Invention

[0003] To make up for the above deficiencies, this application provides an injection mold for plastic parts of a remote control, aiming to improve the problem of high material usage of the existing injection mold for the remote control housing.

[0004] An embodiment of this application provides an injection mold for plastic parts of a remote control, including a lower mold and an upper mold. The upper mold is coupled with the lower mold. An assembly cavity is opened at the top of the lower mold, and a mold core is installed in the assembly cavity. A first molding cavity is opened at the top of the mold core, and a second molding cavity is opened at the bottom of the mold core. The first molding cavity and the second molding cavity can be switched for use.

[0005] In a specific implementation, the lower mold includes a U-shaped base, and an assembly seat is fixedly connected to the top of the U-shaped base. The assembly cavity is opened at the top of the assembly seat.

[0006] In a specific implementation, positioning grooves are opened on the side walls at both ends of the mold core, and positioning blocks are inserted into both positioning grooves. The positioning blocks are inserted into the assembly cavity and are fixedly connected to the bottom of the assembly cavity.

[0007] In a specific implementation, a first screw rod slides through the top and bottom of the positioning block, and the bottom of the first screw rod is threadedly connected to the bottom of the assembly cavity.

[0008] In a specific embodiment, two positioning grooves are formed at the top of the mold core, mounting grooves are formed on the side walls at both ends of the assembly cavity, the tops of the two mounting grooves are both open, limit blocks are installed in the two mounting grooves, and the two limit blocks are respectively pressed in the two positioning grooves. Two positioning grooves are also formed at the bottom of the mold core.

[0009] In a specific embodiment, the same second screw rod slidably penetrates between the top and the bottom of the limit block, and the bottom of the second screw rod is threadedly connected to the bottom of the mounting groove.

[0010] In a specific embodiment, the same ejector rod mechanism slidably penetrates between the first forming cavity and the second forming cavity. A spring mechanism is installed at the bottom of the ejector rod mechanism, and the spring mechanism is connected to the bottom of the U-shaped base.

[0011] . The injection mold for a remote control plastic part according to the claim, wherein the ejector rod mechanism includes a plurality of ejector rods. The ejector rods slidably penetrate through the first forming cavity and the second forming cavity. A same connecting plate is fixedly connected to the bottoms of the plurality of ejector rods. An adjusting member is installed on the top of the connecting plate. A plurality of lifting rods are installed on the top of the adjusting member. The plurality of lifting rods and the plurality of ejector rods all slidably penetrate through the assembly seat and the mold core. The spring mechanism is connected to the connecting plate.

[0012] In a specific embodiment, the adjusting member includes a threaded rod, the threaded rod is rotatably connected to the top of the connecting plate, an adjusting plate is threadedly sleeved on the threaded rod, and the bottoms of the plurality of lifting rods are fixedly connected to the top of the adjusting plate.

[0013] In a specific embodiment, the spring mechanism includes a plurality of fixing rods, the plurality of fixing rods are all fixedly installed on the bottom of the U-shaped base, the connecting plate and the adjusting plate are both slidably sleeved on the plurality of fixing rods, a return spring is sleeved on each of the plurality of fixing rods, and both ends of each of the plurality of return springs are fixedly connected to the U-shaped base and the bottom of the connecting plate respectively.

[0014] Advantages of this application: By providing an assembly cavity in the lower mold, a mold core is installed in the assembly cavity. A first molding cavity is opened at the top of the mold core, and a second molding cavity is opened at the bottom of the mold core. Thus, it can be used for molding the upper and lower shells of a remote control. When producing the lower shell of the remote control, the first molding cavity is set upward, and when producing the upper shell of the remote control, the second molding cavity is set upward, so as to improve the usage range of the mold core and reduce the use of materials. By providing positioning grooves on both sides of the mold core, positioning blocks are inserted into the positioning grooves. The positioning blocks are connected to the bottom of the assembly cavity through the first screw rods. At the same time, installation grooves are opened on the side walls at both ends of the assembly cavity, and positioning grooves are opened at the top and bottom of the mold core. The limiting blocks can be fixedly installed in the installation grooves through the second screw rods, and the limiting blocks are inserted into the positioning grooves, so as to fix the mold core in the assembly cavity, achieving the purpose of facilitating the installation and adjustment of the mold core. Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of this application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0016] Figure 1 is the main structural schematic diagram of the injection mold for the plastic parts of the remote control provided by the embodiment of this application; Figure 2 is the top view structural schematic diagram of the injection mold for the plastic parts of the remote control provided by the embodiment of this application; Figure 3 is the structural schematic diagram of the second molding cavity of the mold core of the injection mold for the plastic parts of the remote control provided by the embodiment of this application; Figure 4 is the structural schematic diagram of the ejector rod mechanism and the spring mechanism of the injection mold for the plastic parts of the remote control provided by the embodiment of this application; Figure 5 is the disassembled structural schematic diagram of the mold core of the injection mold for the plastic parts of the remote control provided by the embodiment of this application; Figure 6 is the internal structural schematic diagram of the assembly cavity of the injection mold for the plastic parts of the remote control provided by the embodiment of this application; Figure 7 is the structural schematic diagram of the lifting rod adjustment of the injection mold for the plastic parts of the remote control provided by the embodiment of this application.

[0017] In the figure: 10 - lower mold; 110 - U-shaped base; 120 - assembly seat; 20 - upper mold; 30 - assembly cavity; 310 - mounting groove; 320 - limiting block; 330 - second screw; 40 - mold core; 410 - positioning groove; 420 - positioning block; 430 - first screw; 440 - fixing groove; 50 - first molding cavity; 60 - second molding cavity; 70 - ejector rod mechanism; 710 - ejector rod; 720 - connecting plate; 730 - adjusting member; 7310 - threaded rod; 7320 - adjusting plate; 740 - lifting rod; 80 - spring mechanism; 810 - fixing rod; 820 - return spring. Detailed implementation manner

[0018] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application.

[0019] Please refer to Figure 1-7 , the present application provides an injection mold for a remote control plastic part, including a lower mold 10 and an upper mold 20. The upper mold 20 is coupled with the lower mold 10. An assembly cavity 30 is opened at the top of the lower mold 10. A mold core 40 is installed in the assembly cavity 30. A first molding cavity 50 is opened at the top of the mold core 40, and a second molding cavity 60 is opened at the bottom of the mold core 40. The first molding cavity 50 and the second molding cavity 60 can be switched for use. Specifically, a plurality of first molding cavities 50 and second molding cavities 60 are provided and are arranged in an up-and-down corresponding manner. Transfer holes are opened at the center positions of the top and bottom of the mold core 40. At the same time, flow channels are opened at the top and bottom of the mold core 40. The upper flow channel is communicated with the upper transfer hole and the first molding cavity 50, while the lower flow channel is communicated with the lower transfer hole and the second molding cavity 60. Further, an injection hole is provided at the center position of the upper mold 20 to realize injection into the first molding cavity 50 or the second molding cavity 60. Thus, the first molding cavity 50 and the second molding cavity 60 can be switched for use, reducing material usage.

[0020] Refer to Figure 5, the lower mold 10 includes a U-shaped base 110. A mounting seat 120 is fixedly connected to the top of the U-shaped base 110. An assembly cavity 30 is formed at the top of the mounting seat 120. Positioning grooves 410 are formed on both side walls at the two ends of the mold core 40. Positioning blocks 420 are inserted into both of the two positioning grooves 410. The positioning blocks 420 are inserted into the assembly cavity 30 and are fixedly connected to the bottom of the assembly cavity 30. When setting, after placing the mold core 40 into the assembly cavity 30, the two positioning blocks 420 are respectively inserted into the two positioning grooves 410 to achieve the purpose of positioning the mold core 40. Further, a first screw rod 430 slidably penetrates between the top and the bottom of the positioning block 420. The bottom of the first screw rod 430 is threadedly connected to the bottom of the assembly cavity 30. It should be noted that a through hole is formed on the positioning block 420, and a threaded hole is formed at the bottom of the assembly cavity 30. The first screw rod 430 passes through the through hole and is connected to the threaded hole, so as to fix the positioning block 420 in the assembly cavity 30 to achieve the purpose of positioning the mold core 40. Even further, two fixing grooves 440 are formed at the top of the mold core 40. Mounting grooves 310 are formed on both side walls at the two ends of the assembly cavity 30. The tops of the two mounting grooves 310 are both open. Limiting blocks 320 are installed in both of the two mounting grooves 310. The two limiting blocks 320 are respectively pressed into the two fixing grooves 440. Two fixing grooves 440 are also formed at the bottom of the mold core 40. When specifically setting, the upper and lower surfaces of the mold core 40 can be switched for use. Therefore, fixing grooves 440 are formed on both the top and the bottom of the mold core 40 so that the limiting blocks 320 can be inserted into the fixing grooves 440. After placing the mold core 40 into the assembly cavity 30 and positioning the mold core 40, the limiting blocks 320 can be connected to the mounting grooves 310, and at the same time, the limiting blocks 320 are placed in the fixing grooves 440 to fix the mold core 40 in the assembly cavity 30.

[0021] Refer to Figure 5 , a same second screw rod 330 slidably penetrates between the top and the bottom of the limiting block 320. The bottom of the second screw rod 330 is threadedly connected to the bottom of the mounting groove 310. When setting, a through hole is also formed on the limiting block 320, and a threaded hole is also formed inside the mounting groove 310. The limiting block 320 passes through the through hole and is connected to the threaded hole, so as to fix the limiting block 320 in the mounting groove 310, and further achieve the purpose of facilitating the fixing of the mold core 40.

[0022] Refer to Figure 4, a same ejector rod mechanism 70 slidably penetrates between the first molding cavity 50 and the second molding cavity 60. A spring mechanism 80 is installed at the bottom of the ejector rod mechanism 70, and the spring mechanism 80 is connected to the bottom of the U-shaped base 110. The ejector rod mechanism 70 includes a plurality of ejector rods 710. The ejector rods 710 slidably penetrate through the first molding cavity 50 and the second molding cavity 60. A same connecting plate 720 is fixedly connected to the bottoms of the plurality of ejector rods 710. An adjusting member 730 is installed on the top of the connecting plate 720. A plurality of lifting rods 740 are installed on the top of the adjusting member 730. The plurality of lifting rods 740 and the plurality of ejector rods 710 both slidably penetrate through the assembly seat 120 and the mold core 40. The spring mechanism 80 is connected to the connecting plate 720. It should be noted that when the upper mold 20 and the lower mold 10 are closed, the upper mold 20 will squeeze the lifting rods 740, so that the lifting rods 740 are received into the top of the mold core 40. The tops of the lifting rods 740 are flush with the top of the mold core 40. Thus, the lifting rods 740 drive the connecting plate 720 to move downward through the adjusting member 730, and then the ejector rods 710 are received, and at the same time, the spring mechanism 80 is compressed, so that when the mold is opened, the ejector rods 710 can eject the product. Further, the adjusting member 730 includes a threaded rod 7310. The threaded rod 7310 is rotatably connected to the top of the connecting plate 720. An adjusting plate 7320 is threadedly sleeved on the threaded rod 7310. The bottoms of the plurality of lifting rods 740 are fixedly connected to the top of the adjusting plate 7320. When injecting into the first molding cavity 50, the bottom of the adjusting plate 7320 is in contact with the top of the connecting plate 720. When injecting into the second molding cavity 60, the adjusting plate 7320 is in contact with the head of the threaded rod 7310 to adjust the lifting rods 740, so that the ejector rods 710 can be adapted to the first molding cavity 50 and the second molding cavity 60 at the same time.

[0023] Refer to Figure 4 , the spring mechanism 80 includes a plurality of fixing rods 810. The plurality of fixing rods 810 are all fixedly installed on the bottom of the U-shaped base 110. The connecting plate 720 and the adjusting plate 7320 are both slidably sleeved on the plurality of fixing rods 810. A plurality of return springs 820 are sleeved on the plurality of fixing rods 810. The two ends of the plurality of return springs 820 are respectively fixedly connected to the U-shaped base 110 and the bottom of the connecting plate 720. When the mold is closed, the connecting plate 720 will squeeze the return springs 820, so that the return springs 820 store energy. When the mold is opened, the return springs 820 drive the connecting plate 720 to reset to eject the product.

[0024] When the injection mold for the plastic parts of this remote control works: when using the first molding cavity 50, the first molding cavity 50 is set upward. Then, the mold core 40 is placed in the assembly cavity 30. Two positioning blocks 420 are inserted into two positioning grooves 410 and fixed. Then, two limiting blocks 320 are inserted into two fixing grooves 440. At the same time, the two limiting blocks 320 are respectively fixed in two installation grooves 310, and the fixing of the mold core 40 can be completed. After that, the mold is closed. The upper mold 20 and the lower mold 10 are closed. The lifting rod 740 moves downward into the mold core 40. At the same time, the ejector rod 710 moves to the bottom of the first molding cavity 50. The connecting plate 720 compresses the return spring 820 and injects plastic into the first molding cavity 50. After the injection is completed and the product is formed, the mold can be opened. The return spring 820 resets, driving the connecting plate 720 to move upward, so that the ejector rod 710 ejects the product in the first molding cavity 50, and the product can be taken out. When injecting plastic into the second molding cavity 60, the second molding cavity 60 is set upward, and the above operations are repeated to install and fix the mold core 40. Then, the threaded rod 7310 is rotated, and the adjusting plate 7320 moves upward until it contacts the head of the threaded rod 7310. Then, the injection process can be carried out.

[0025] It should be noted that the specific model specifications of the lower mold 10 and the upper mold 20 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail.

[0026] The power supply of the lower mold 10 and the upper mold 20 and its principle are clear to those skilled in the art, so it will not be described in detail here.

[0027] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

Claims

1. An injection mold for a remote control plastic part, characterized in that: The invention comprises a lower mold (10) and an upper mold (20), wherein the upper mold (20) is coupled to the lower mold (10), an assembly cavity (30) is provided at the top of the lower mold (10), a mold core (40) is installed in the assembly cavity (30), a first molding cavity (50) is provided at the top of the mold core (40), and a second molding cavity (60) is provided at the bottom of the mold core (40), and the first molding cavity (50) and the second molding cavity (60) can be switched for use.

2. The injection mold for a remote control plastic part according to claim 1, characterized in that: The lower mold (10) comprises a U-shaped base (110), the top of the U-shaped base (110) is fixedly connected to an assembly seat (120), and the assembly cavity (30) is opened at the top of the assembly seat (120).

3. The injection mold for a remote control plastic part according to claim 1, characterized in that: Positioning grooves (410) are provided on the side walls at both ends of the mold core (40), positioning blocks (420) are inserted into the two positioning grooves (410), the positioning blocks (420) are inserted into the assembly cavity (30), and the positioning blocks (420) are fixedly connected to the bottom of the assembly cavity (30).

4. The injection mold for a remote control plastic part according to claim 3, characterized in that: A first screw rod (430) slides through the top and bottom of the positioning block (420), and the bottom of the first screw rod (430) is threadedly connected to the bottom of the assembly cavity (30).

5. The injection mold for a remote control plastic part according to claim 1, characterized in that: Two fixing grooves (440) are provided on the top of the mold core (40), and mounting grooves (310) are provided on the side walls at both ends of the assembly cavity (30). The tops of the two mounting grooves (310) are both open, and limit blocks (320) are installed in the two mounting grooves (310). The two limit blocks (320) are respectively pressed in the two fixing grooves (440), and the bottom of the mold core (40) is also provided with two fixing grooves (440).

6. The injection mold for a remote control plastic part according to claim 5, characterized in that: A second screw rod (330) is slidably inserted between the top and bottom of the limiting block (320), and the bottom of the second screw rod (330) is threadedly connected to the bottom of the installation groove (310).

7. The injection mold for a remote control plastic part according to claim 2, characterized in that: A common push rod mechanism (70) is slidably inserted between the first molding cavity (50) and the second molding cavity (60), a spring mechanism (80) is installed at the bottom of the push rod mechanism (70), and the spring mechanism (80) is connected to the bottom of the U-shaped base (110).

8. The injection mold for a remote control plastic part according to claim 7, characterized in that: The push rod mechanism (70) comprises a plurality of push rods (710), the push rods (710) slidingly passing through the first molding cavity (50) and the second molding cavity (60), the bottoms of the plurality of push rods (710) being fixedly connected to a same connecting plate (720), the top of the connecting plate (720) being provided with an adjusting member (730), the top of the adjusting member (730) being provided with a plurality of lifting rods (740), the plurality of lifting rods (740) and the plurality of push rods (710) all slidingly passing through the assembly seat (120) and the mold core (40), and the spring mechanism (80) being connected to the connecting plate (720).

9. The injection mold for a remote control plastic part according to claim 8, characterized in that: The adjusting member (730) comprises a threaded rod (7310), the threaded rod (7310) being rotatably connected to the top of the connecting plate (720), the adjusting plate (7320) being threadedly sleeved on the threaded rod (7310), and the bottoms of a plurality of lifting rods (740) are fixedly connected to the top of the adjusting plate (7320).

10. The injection mold of a remote control plastic part according to claim 9, characterized in that: The spring mechanism (80) comprises a plurality of fixing rods (810), the plurality of fixing rods (810) are fixedly mounted on the bottom of the U-shaped base (110), the connecting plate (720) and the adjusting plate (7320) are slidably mounted on the plurality of fixing rods (810), the plurality of fixing rods (810) are mounted with a return spring (820), and both ends of the plurality of return springs (820) are respectively fixedly connected to the bottom of the U-shaped base (110) and the connecting plate (720).

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