A mold structure of a vehicle key shell injection molding machine

Abstract

The utility model discloses a mould structure of car key shell injection molding machine belongs to car key shell processing technical field, including bottom die and top die, the top die sets up in the just above of bottom die, the top of top die middle fixed mounting has the sliding sleeve, the bottom of top die is provided with the mounting groove, the mould core is sealed slidingly installed in the mounting groove, still include telescopic subassembly, the utility model through setting up telescopic subassembly, simple structure, convenient and practical, can drive the mould core in the mounting groove of top die and move up and down, in the injection molding process, the transmission rod pushes the top die and resists the bottom die, and the mould core also stretches out downward cooperation shell product forming simultaneously, when discharging, the mould core contracts upward and is separated from shell product and leaves it in the bottom die, thereby avoids shell product to be thrown down, guarantees the safety of shell product, and the device is automatic telescopic along with the opening and closing of top die and bottom die, does not need additional operation, improves the processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of car key shell processing technology, specifically a mold structure for a car key shell injection molding machine. Background Technology

[0002] A car key casing is the external protective part that encloses the internal electronic components of a car key. It is typically made of plastic, metal, or composite materials and serves functions such as protecting the circuitry, providing shock resistance, aesthetic appeal, and ease of grip. Injection molding is a common process for manufacturing car key casings. The principle involves heating and melting granular plastic raw materials, then injecting them under high pressure into a pre-designed mold cavity. After cooling and solidification, a part of a specific shape is formed. This process offers advantages such as high production efficiency, high precision, and the ability to mass-produce complex structural parts. By adjusting the mold design and raw material formula, car key casings with smooth surfaces, precise dimensions, and varying hardness, color, and texture can be produced, making them widely used in the automotive parts manufacturing industry.

[0003] A search revealed that Chinese Patent Publication No. CN222727248U discloses a plastic shell injection mold, relating to the field of plastic shell production. This mold solves the problem of material leakage in existing molds, which affects subsequent injection molding results. The solution includes a base plate and a bottom mold and a top mold mounted on it. The bottom mold and top mold are slidably fitted onto the top side of the base plate, and the top side of the bottom mold and the bottom side of the top mold have interconnected material grooves. The edge of the material groove on the top side of the bottom mold has an inclined groove and a straight groove, and the edge of the material groove on the bottom side of the top mold has a fixed frame portion that matches the shape of the inclined groove and the straight groove.

[0004] However, this device has the following drawbacks:

[0005] During continuous processing, the top mold moves up and down frequently under the drive of the drive component, which facilitates processing and unloading. During the upward movement of the top mold, the processed shell product may be driven upward by the top mold due to factors such as friction or adhesive force. If the shell product detaches from the top mold during the upward movement, it will be dropped, which will cause damage to the shell product or even scrap it directly. This device does not solve this problem. Utility Model Content

[0006] The purpose of this utility model is to provide a mold structure for a car key shell injection molding machine. By setting a telescopic component, the mold core can be driven to move up and down in the mounting groove in the top mold. During the injection process, the transmission rod pushes the top mold to press against the bottom mold, and at the same time, the mold core extends downward to cooperate with the shell product in molding. During the discharge, the mold core retracts upward and separates from the shell product, leaving it in the bottom mold, thereby preventing the shell product from falling and ensuring the safety of the shell product, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A mold structure for a car key shell injection molding machine includes a bottom mold and a top mold. The top mold is located directly above the bottom mold. A sliding sleeve is fixedly installed in the middle of the top of the top mold. An installation groove is opened at the bottom of the top mold, and a mold core is slidably installed in the installation groove.

[0009] It also includes a telescopic assembly, which includes a transmission rod. The bottom of the transmission rod is fixedly installed on the top of the mold core. The transmission rod slides in cooperation with the top of the top mold and the sliding sleeve. A limit ring is fixedly installed on the surface of the transmission rod, and the limit ring abuts against the top of the sliding sleeve.

[0010] Preferably, a spring is slidably sleeved on the surface of the transmission rod, and the bottom of the spring abuts against the mold core.

[0011] Preferably, the bottom of the sliding sleeve is provided with a storage groove, the top of the spring abuts against the top of the storage groove, and the spring slides with a clearance to the storage groove and the top of the top mold.

[0012] Preferably, a gate is fixedly installed on one side of the bottom mold, and a mounting base plate is fixedly installed on the bottom of the bottom mold.

[0013] Preferably, the mounting base plate is fixedly connected to the bottom of the four sets of guide rods, and the guide rods are arranged around the bottom mold.

[0014] Preferably, a mounting plate is fixedly installed on the top of the top mold, the mounting plate is slidably engaged with four sets of guide rods, and the top of the guide rods is fixedly connected to the bottom of the top frame.

[0015] Preferably, magnets are fixedly installed around the top of the bottom mold, with the top surface of the magnets being on the same horizontal plane as the top surface of the bottom mold. Iron blocks that cooperate with the magnets are fixedly installed around the bottom of the top mold, with the bottom of the iron blocks being on the same horizontal plane as the bottom of the top mold.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model features a simple and convenient telescopic component that allows the mold core to move up and down within the mounting slot of the top mold. During injection molding, the transmission rod pushes the top mold against the bottom mold, while the mold core extends downwards to help form the outer shell. During ejection, the mold core retracts upwards, detaching from the outer shell and leaving it in the bottom mold, thus preventing the outer shell from falling and ensuring its safety. Furthermore, this device automatically extends and retracts with the opening and closing of the top and bottom molds, requiring no additional operation and improving processing efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the bottom mold and top mold structure;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the bottom mold and the top mold;

[0021] Figure 4 This is a schematic diagram of the bottom mold structure.

[0022] In the diagram: 1. Bottom mold; 2. Top mold; 3. Mold core; 4. Sliding sleeve; 5. Mounting groove; 6. Transmission rod; 7. Limiting ring; 8. Spring; 9. Storage groove; 10. Sprue; 11. Mounting base plate; 12. Guide rod; 13. Mounting top plate; 14. Top frame; 15. Magnet; 16. Iron block; 17. Key shell body. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 This utility model provides a technical solution:

[0025] A mold structure for a car key shell injection molding machine includes a bottom mold 1 and a top mold 2. A gate 10 is fixedly installed on one side of the bottom mold 1. The top mold 2 is located directly above the bottom mold 1. A sliding sleeve 4 is fixedly installed in the middle of the top of the top mold 2. An installation groove 5 is opened at the bottom of the top mold 2. A mold core 3 is slidably installed in the installation groove 5.

[0026] By setting the bottom mold 1 as the basic component and fixing it to the external injection molding machine worktable, it provides support and positioning. It is equipped with a gate 10 for injecting molten plastic and cooperates with the top mold 2 and the mold core 3 to form a cavity. The top mold 2 is driven by the drive device to move up and down, and closes with the bottom mold 1 to cooperate with the mold core 3 to form a complete cavity. The mold core 3 is installed in the top mold 2 and moves up and down through the telescopic component. During injection, it extends to cooperate with the top mold 2 and the bottom mold 1 to form the molten plastic. When the mold is opened, it retracts and separates from the key shell body 17 to prevent the key shell body 17 from being lifted and dropped. The three cooperate with each other to ensure the efficient molding of the key shell body 17, thereby improving product quality and production efficiency.

[0027] It also includes a telescopic assembly, which includes a transmission rod 6. The bottom of the transmission rod 6 is fixedly installed on the top of the mold core 3. The transmission rod 6 slides in cooperation with the top of the top mold 2 and the sliding sleeve 4. The top of the transmission rod 6 is connected to an external driving device. A limit ring 7 is fixedly installed on the surface of the transmission rod 6. The limit ring 7 abuts against the top of the sliding sleeve 4. A spring 8 is connected to the sliding sleeve 4 on the surface of the transmission rod 6. The bottom of the spring 8 abuts against the mold core 3. A storage groove 9 is opened at the bottom of the sliding sleeve 4. The top of the spring 8 abuts against the top of the storage groove 9. The spring 8 slides in cooperation with the storage groove 9 and the top of the top mold 2.

[0028] By incorporating a telescopic assembly, its core function is to drive the mold core 3 to move up and down within the mounting groove 5 of the top mold 2. Through linkage with the top mold 2 and the bottom mold 1, during injection molding, the transmission rod 6 pushes the top mold 2 against the bottom mold 1 while the mold core 3 extends downward to cooperate with the top mold 2 and the bottom mold 1 for molding. During material discharge and mold opening, the transmission rod 6 moves upward, first causing the mold core 3 to retract upward, disengaging it from the key housing body 17. When the mold core 3 touches the top of the mounting groove 5, it drives the top mold 2 to open upward, releasing the key housing body. The key housing body 17 remains in the bottom mold 1, preventing it from falling and being damaged due to being driven by the top mold 2 and the mold core 3. This component requires no additional operation and operates automatically as the top mold 2 and the bottom mold 1 open and close, effectively improving the safety and efficiency of the key housing body 17 injection molding process. By setting the limit ring 7, when the mold core 3 touches the bottom mold 1, the transmission rod 6 pushes the top mold 2 downward to press against the top periphery of the bottom mold 1, realizing mold closing. By setting the spring 8, the top mold 2 can be prevented from sliding freely on the transmission rod 6, reducing wear.

[0029] Magnets 15 are fixedly installed around the top of the bottom mold 1. The top surface of the magnets 15 is on the same horizontal plane as the top surface of the bottom mold 1. Iron blocks 16 that cooperate with the magnets 15 are fixedly installed around the bottom of the top mold 2. The bottom of the iron blocks 16 is on the same horizontal plane as the bottom of the top mold 2.

[0030] By using magnet 15 in conjunction with iron block 16, the magnetic attraction between top mold 2 and bottom mold 1 can effectively prevent top mold 2 from moving freely. This ensures that transmission rod 6 first drives mold core 3 to retract upwards, causing mold core 3 to separate from key shell body 17. After mold core 3 retracts to its limit position, sufficient driving force drives top mold 2 to open, thereby preventing key shell body 17 from being lifted, ensuring product safety, and improving the stability and reliability of injection molding.

[0031] A mounting base plate 11 is fixedly installed on the bottom of the bottom mold 1. The mounting base plate 11 is fixedly connected to the bottom of four sets of guide rods 12. The guide rods 12 are arranged around the bottom mold 1. A mounting top plate 13 is fixedly installed on the top of the top mold 2. The mounting top plate 13 is slidably engaged with the four sets of guide rods 12. The top of the guide rods 12 is fixedly connected to the bottom of the top frame 14.

[0032] By setting the mounting base plate 11, it is easy to install and fix the bottom mold 1, so that it can be reliably connected to the injection molding machine worktable. The guide rod 12 and the mounting top plate 13 constitute a precision guiding system, which ensures that the top mold 2 moves smoothly along the fixed trajectory when it is driven up and down by the injection molding machine, and accurately completes the closing and separating actions with the bottom mold 1, ensuring the accuracy of the position of each component during the mold opening and closing process, thereby improving the precision and stability of the key shell body 17 injection molding. The top of the guide rod 12 is connected to the top frame 14, providing a more stable support frame for the entire mold structure.

[0033] In practical use, the device is moved to the designated position. First, the bottom mold 1 is fixed to the injection molding machine worktable via the mounting base plate 11. The top mold 2 is slidably engaged with the guide rod 12 via the mounting top plate 13. Before injection, the top mold 2 descends under the action of the drive equipment. The transmission rod 6 drives the mold core 3 to extend. The bottom mold 1 and the top mold 2 are tightly closed. Molten plastic is injected into the cavity through the gate 10, cooled and solidified. When the mold is opened, the transmission rod 6 first moves upward to drive the mold core 3 to contract, so that it separates from the outer shell product. After the mold core 3 contracts to the limit position, it drives the top mold 2 to rise and open along the guide rod 12 with sufficient driving force. The molded car key shell remains in the bottom mold 1. Finally, the outer shell is removed to complete one injection molding process.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold structure for an injection molding machine for car key shells, characterized in that: It includes a bottom mold (1) and a top mold (2). The top mold (2) is located directly above the bottom mold (1). A sliding sleeve (4) is fixedly installed in the middle of the top of the top mold (2). An installation groove (5) is opened at the bottom of the top mold (2). A mold core (3) is sealed and slidably installed in the installation groove (5). It also includes a telescopic assembly, which includes a transmission rod (6), the bottom of which is fixedly installed on the top of the mold core (3), the transmission rod (6) slidingly engaging with the top of the top mold (2) and the sliding sleeve (4), and a limiting ring (7) fixedly installed on the surface of the transmission rod (6), the limiting ring (7) abutting against the top of the sliding sleeve (4).

2. The mold structure of a car key shell injection molding machine according to claim 1, characterized in that: The surface sliding sleeve (4) of the transmission rod (6) is connected to a spring (8), and the bottom of the spring (8) abuts against the mold core (3).

3. The mold structure of a car key shell injection molding machine according to claim 2, characterized in that: The bottom of the sliding sleeve (4) is provided with a storage groove (9), the top of the spring (8) abuts against the top of the storage groove (9), and the spring (8) slides with the storage groove (9) and the top of the top mold (2) with a clearance.

4. The mold structure of a car key shell injection molding machine according to claim 1, characterized in that: A gate (10) is fixedly installed on one side of the bottom mold (1), and a mounting base plate (11) is fixedly installed on the bottom of the bottom mold (1).

5. The mold structure of a car key shell injection molding machine according to claim 4, characterized in that: The mounting base plate (11) is fixedly connected to the bottom of the four sets of guide rods (12), and the guide rods (12) are arranged around the bottom mold (1).

6. The mold structure of a car key shell injection molding machine according to claim 1, characterized in that: The top of the top mold (2) is fixedly installed with a mounting plate (13), which is slidably engaged with four sets of guide rods (12), and the top of the guide rods (12) is fixedly connected to the bottom of the top frame (14).

7. The mold structure of a car key shell injection molding machine according to claim 1, characterized in that: Magnets (15) are fixedly installed around the top of the bottom mold (1), and the top surface of the magnets (15) is on the same horizontal plane as the top surface of the bottom mold (1). Iron blocks (16) that cooperate with the magnets (15) are fixedly installed around the bottom of the top mold (2), and the bottom of the iron blocks (16) is on the same horizontal plane as the bottom of the top mold (2).

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