Full-automatic double-workpiece injection molding device

Abstract

The invention relates to a full-automatic double-workpiece injection molding device, and relates to the technical field of plastic product processing. The device comprises a rack, a spiral injection molding machine, a forming die, a power case, a suction cup type manipulator and a clamping type manipulator. The forming mold comprises a fixed mold and a movable mold, the fixed mold comprises an upper forming mold, and the upper forming mold is provided with a pouring gate separating plate, a male mold plate and a self-separating assembly arranged between the pouring gate separating plate and the male mold plate; the movable mold comprises a lower forming mold and is provided with an ejection mechanism. By means of the self-separation assembly, separation of the pouring gate and an upper mold workpiece can be automatically achieved after injection molding is completed, and injection molding can be conducted on the upper forming cavity and the lower forming cavity at the same time. According to the full-automatic double-workpiece injection molding device, synchronous, efficient and high-quality full-automatic production of double workpieces is achieved by optimizing the mold structure and integrating automatic control, and the production efficiency and the product percent of pass of an injection molding link are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of plastic product processing technology, and in particular to a fully automatic dual-workpiece injection molding device. Background Technology

[0002] Injection molding is an important technology in plastics processing. It involves injecting molten plastic into the cavity of a mold, where it cools and solidifies to form the desired part. This technology is widely used in manufacturing due to its high flexibility and adaptability. Existing injection molding equipment is typically divided into single-cavity or multi-cavity types, capable of producing multiple identical products simultaneously. However, these machines have limited capacity and flexibility when handling situations requiring the production of different products on the same machine, or when utilizing the upper and lower spaces of the mold for simultaneous molding.

[0003] In existing injection molds, the gating system (including runners and gates) remains connected to the product after molding. This means that manual separation or the use of additional equipment is required when removing the product. This separation process not only increases the complexity and labor intensity of the production process but may also damage the product surface, affecting product quality and consistency. Although some molds are designed with structures that can automatically separate the gates, these structures are often very complex and difficult to achieve stable, synchronous, and automatic separation when different products are being produced simultaneously in the upper and lower spaces of the mold.

[0004] In traditional injection molding production, the unloading process usually relies on a single type of robotic arm. This type of robotic arm is not very adaptable to products of different shapes, sizes or positions, which limits the overall production efficiency. Summary of the Invention

[0005] In order to address the limitations of existing fully automatic dual-workpiece injection molding devices, where different shaped workpieces are difficult to mold simultaneously and unload in a timely manner on the same machine, this application provides a fully automatic dual-workpiece injection molding device.

[0006] The fully automatic dual-workpiece injection molding device provided in this application adopts the following technical solution: it includes a frame, a spiral injection molding machine set at one end of the frame, a molding die set at the discharge end of the spiral injection molding machine, a power housing set on the other side of the molding die for driving the molding die, a suction cup manipulator set on one side of the frame, and a gripping manipulator set on the other side of the frame. The molding die includes a fixed mold fixedly connected to the frame, a movable mold slidably connected to the frame, a guide post disposed between the fixed mold and the movable mold, and an injection mold disposed between the fixed mold and the spiral injection molding machine; The fixed mold includes a fixed plate and an upper forming mold disposed on the lower end face of the fixed plate; The upper forming mold includes a sprue separation plate fixedly connected to the fixed plate, a male template slidably disposed relative to the sprue separation plate, a self-separating component disposed between the sprue separation plate and the male template, and an upper forming cavity disposed at one end of the male template relative to the sprue separation plate. The lower forming mold includes a lower sealing plate, support mold feet fixedly connected to both sides of the upper end face of the lower sealing plate, a support plate fixedly disposed on the upper end face of the support mold feet, a female mold plate disposed on the upper end face of the support plate, a lower forming cavity disposed on one end of the female mold plate relative to the male mold plate, and an ejection mechanism disposed on the upper end face of the lower sealing plate and located between the support mold feet. The lower sealing plate is connected to the power system. The casting component includes a positioning ring fixedly connected to the fixing plate and a pouring nozzle connected to the positioning ring. The pouring nozzle passes through the runner separation plate and communicates with the upper forming cavity. The gripper-type robot is used to unload workpieces from the lower forming cavity, and the suction cup-type robot is used to unload workpieces from the upper forming cavity.

[0007] By adopting the above technical solution, two workpieces can be injection molded simultaneously in the upper and lower molding cavities, greatly improving production efficiency. Specifically, the device uses a spiral injection molding machine to inject molten plastic into the molding mold. The fixed and moving molds of the molding mold close under the guidance of guide pillars, ensuring that the plastic can accurately and smoothly enter the upper and lower molding cavities. A self-separating component is installed between the sprue separator plate and the male mold plate in the upper molding mold. This component can automatically separate the sprue from the molded workpiece after injection molding, improving the molding quality and production efficiency. Simultaneously, the design of the upper and lower molding cavities allows the workpieces to be injection molded at the same time, achieving simultaneous production of two workpieces. The ejector mechanism in the lower molding mold is responsible for ejecting the molded workpiece from the lower molding cavity after injection molding, facilitating subsequent processes such as part removal and packaging. The power unit provides power support for the entire molding mold, ensuring its stable operation. The controller provides unified control and management of the entire injection molding device, ensuring coordinated operation between various components and realizing the automation and intelligence of the injection molding process.

[0008] As a preferred embodiment, the runner separation plate is connected to the upper sealing plate by fixing screws, and the fixing screws pass through the upper sealing plate and are fixedly connected to the runner separation plate.

[0009] By adopting the above technical solution, it is easier to install and disassemble the gating separation plate stably, which facilitates subsequent maintenance and component replacement.

[0010] As a preferred embodiment, the runner separation plate is provided with a gate adapted to the gating nozzle, and the gating nozzle passes through the gate and communicates with the upper molding cavity.

[0011] By adopting the above technical solution, this design ensures that the plastic can be accurately injected into the upper molding cavity. At the same time, due to the relative sliding between the sprue separator plate and the male mold plate, the plastic will also smoothly enter the lower molding cavity during the injection process, realizing simultaneous injection of two workpieces.

[0012] As a preferred embodiment, it also includes guide protrusions respectively disposed at one end of the gating separation plate relative to the male template, and positioning grooves disposed on the male template that are adapted to the guide protrusions.

[0013] By adopting the above technical solution, the design of the guide protrusion and the positioning groove can ensure that the male template is accurately positioned during the mold closing process, effectively avoiding injection molding defects caused by inaccurate positioning and improving the product qualification rate.

[0014] As a preferred embodiment, the self-separating assembly includes a slide rod, a sliding bushing, and a return spring disposed on the outer periphery of the slide rod, wherein one end of the slide rod is fixedly connected to the runner separation plate and the other end is slidably disposed in the sliding bushing, the sliding bushing is fixedly connected to the male template, and the slide rod and the sliding bushing are respectively configured as embedded.

[0015] By adopting the above technical solution, this embedded design ensures that the slide bar and sliding bushing remain stable during relative sliding and are not easily affected by external factors. During the injection molding process, molten plastic enters the upper and lower molding cavities through the nozzle and solidifies as the plastic cools.

[0016] As a preferred embodiment, one end of the return spring is fixedly connected to the slide rod, and the other end of the return spring is fixedly connected to one end of the sliding bushing relative to the slide rod.

[0017] By adopting the above technical solution, this connection method ensures that when the return spring is compressed or returns to its original state, its force can be directly and effectively transmitted to the slide rod and sliding bushing, thereby causing the sprue separation plate to separate from the male template. At the same time, this fixed connection method also enhances the overall structural stability of the self-separating assembly, making it less prone to loosening or damage during long-term, high-frequency operation, further extending the service life of the device.

[0018] As a preferred embodiment, the ejection mechanism includes an ejector base plate, an ejector panel disposed on the upper surface of the ejector base plate, a return pin disposed between the ejector panel and the support plate, a return spring disposed on the outer periphery of the return pin, and an ejector pin disposed on the ejector panel.

[0019] By adopting the above technical solution, the ejector base plate and the lower sealing plate are fixedly connected, providing a stable support foundation for the entire ejection mechanism. The ejector panel is relatively slidably connected to the support plate through a return pin. The return spring set on the outer periphery of the return pin enables the ejector panel to automatically return to its original position after the ejection action is completed. When the injection molding process is finished, the power unit drives the relevant components in the lower molding mold to move, causing the ejector pins to move upward under the action of the ejector panel, ejecting the molded workpiece from the lower molding cavity. Furthermore, the number and position of the ejector pins are reasonably set according to the shape and size of the workpiece in the lower molding cavity to ensure that the workpiece can be ejected evenly and stably, avoiding deformation or damage to the workpiece during the ejection process.

[0020] As a preferred embodiment, the return pin passes through the ejector pin base plate and is located on the outer side of the ejector pin panel, and the support plate is provided with a pin groove that matches the return pin.

[0021] By adopting the above technical solution, the pin groove facilitates the limiting of the upward movement position of the return pin, the ejector plate receives the power of the ejector base plate and transmits it to the ejector pin; the return pin and the reset spring ensure that the ejector plate can automatically reset in preparation for the next ejection operation. As a preferred embodiment, the controller is configured as a programmable logic controller, and the controller is electrically connected to the spiral injection molding machine, the power housing, the suction cup robot, the gripping robot, and the molding die.

[0022] By adopting the above technical solution, the controller precisely controls the injection speed, injection volume, and injection time of the spiral injection molding machine through preset programs and instructions, ensuring that the plastic is injected into the mold in the appropriate state. Simultaneously, the controller monitors the operating status of the power unit and adjusts the power output in a timely manner according to the mold closing and opening requirements, ensuring the stable operation of the mold. Furthermore, the controller communicates with suction cup and gripping robotic arms, controlling their timing and movement methods to achieve automatic workpiece unloading and handling.

[0023] In summary, this application includes the following beneficial technical effects: 1. By setting up an upper molding cavity and two independent lower molding cavities, two workpieces can be produced simultaneously in a single injection molding cycle. Compared with traditional single-cavity molds, the theoretical production efficiency is nearly doubled, which greatly reduces the production cost and energy consumption per piece.

[0024] 2. The self-separating component can automatically and non-destructively separate the gating system from the upper molded workpiece during the mold opening stage, avoiding scratches, deformation, and other problems that may occur during subsequent manual separation, thus ensuring the appearance quality and dimensional consistency of the workpiece. Combined with the automatic ejection of the lower mold workpiece by the ejection mechanism, and the automatic unloading by the gripping robot and suction cup robot, the entire process from mold closing, injection molding, cooling, mold opening, separation, ejection to unloading is automated, reducing manual intervention and stabilizing product quality. 3. By replacing different male and female mold plates, the upper and lower forming cavities can have the same or different cavity structures. This means that this device can be used for mass production of the same workpiece, or for the simultaneous production of two different matching parts within the same production cycle, enhancing the flexibility of the production line and adapting to the market demand for small batches and multiple varieties.

[0025] 4. The cooperation between the guide protrusion and the positioning groove ensures precise alignment of the male mold plate and the sprue separation plate during mold closing and separation, preventing misalignment and jamming. The self-separating component and ejection mechanism have a simple and effective structural design, good durability, and low failure rate, ensuring long-term continuous and stable operation of the equipment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a fully automatic dual-workpiece injection molding device according to this application; Figure 2 This is a schematic diagram of the molding die in a fully automatic dual-workpiece injection molding device according to this application; Figure 3 This is a schematic diagram of the upper molding die in a fully automatic dual-workpiece injection molding device according to this application; Figure 4 This is a structural schematic diagram of the assembly drawing of the upper molding die in a fully automatic dual-workpiece injection molding device according to this application; Figure 5 This is a structural schematic diagram of the assembly drawing of the runner separation plate and the male template in a fully automatic dual-workpiece injection molding device of this application; Figure 6 This is a schematic diagram of the structure of the sprue separation plate and the male mold plate in a fully automatic dual-workpiece injection molding device according to this application; Figure 7 This is a schematic diagram of the structure of the sprue separation plate and the male mold plate in the mold closing process of a fully automatic dual-workpiece injection molding device according to this application.

[0027] Explanation of reference numerals in the attached drawings: 100, frame; 200, spiral injection molding machine; 300, molding mold; 301, fixed mold; 302, moving mold; 31, fixed plate; 321, sprue separation plate; 3211, guide protrusion; 322, male mold plate; 3221, upper molding cavity; 33, lower sealing plate; 34, support mold foot; 35, support plate; 36, female mold plate; 361, lower molding cavity; 371, ejector base plate; 372, ejector plate; 373, ejector pin; 374, return pin; 400, guide post; 500, power unit; 61, suction cup manipulator; 62, gripping manipulator; 7, controller; 81, positioning ring; 82, sprue; 821, gate; 91, slide bar; 911, return spring; 92, sliding bushing. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] Please refer to details. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 This application discloses a fully automatic dual-workpiece injection molding device. It includes a frame 100, a spiral injection molding machine 200 disposed at one end of the frame 100, a molding die 300 disposed at the discharge end of the spiral injection molding machine 200, a power housing 500 disposed on the other side of the molding die 300 for driving the molding die 300, a suction cup-type robot arm 61 disposed on one side of the frame 100, and a gripping robot arm 62 disposed on the other side of the frame 100. Please refer to details. Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The molding die 300 includes a fixed die 301 fixedly connected to the frame 100, a movable die 302 slidably connected to the frame 100, a guide post 400 disposed between the fixed die 301 and the movable die 302, and a casting component disposed between the fixed die 301 and the spiral injection molding machine 200. The fixed mold 301 includes a fixed plate 31 and an upper forming mold 300 disposed on the lower end face of the fixed plate 31; The upper forming mold 300 includes a sprue separation plate 321 fixedly connected to the fixed plate 31, a male template 322 slidably disposed relative to the sprue separation plate 321, a self-separating component disposed between the sprue separation plate 321 and the male template 322, and an upper forming cavity 3221 disposed at one end of the male template 322 relative to the sprue separation plate 321. Please refer to details. Figure 1 and Figure 2The lower forming mold 300 includes a lower sealing plate 33, support mold feet 34 fixedly connected to both sides of the upper end face of the lower sealing plate 33, support plate 35 fixedly disposed on the upper end face of the support mold feet 34, female mold plate 36 disposed on the upper end face of the support plate 35, lower forming cavity 361 disposed on one end of the female mold plate 36 relative to the male mold plate 322, and ejection mechanism disposed on the upper end face of the lower sealing plate 33 and located between the support mold feet 34. The lower sealing plate 33 is connected to the power system. The casting component includes a positioning ring 81 fixedly connected to the fixed plate 31 and a pouring nozzle 82 connected to the positioning ring 81. The pouring nozzle 82 passes through the runner separation plate 321 and communicates with the upper forming cavity 3221. The gripper-type robot 62 is used to unload the workpiece in the lower forming cavity 361, and the suction cup-type robot 61 is used to unload the workpiece in the upper forming cavity 3221.

[0030] Through the above design, two workpieces can be injection molded simultaneously in the upper molding cavity 3221 and the lower molding cavity 361, greatly improving production efficiency. Specifically, the device uses a spiral injection molding machine 200 to inject molten plastic into the molding mold 300. The fixed mold 301 and the moving mold 302 of the molding mold 300 close under the guidance of the guide pillar 400, ensuring that the plastic can accurately and smoothly enter the upper molding cavity 3221 and the lower molding cavity 361. A self-separating component is provided between the sprue separation plate 321 and the male mold plate 322 in the upper molding mold 300. This component can automatically separate the sprue from the molded workpiece after injection molding, improving the molding quality and production efficiency of the workpiece. At the same time, the design of the upper molding cavity 3221 and the lower molding cavity 361 allows the workpieces to be injection molded at the same time, realizing the simultaneous production of two workpieces. The ejection mechanism in the lower molding die 300 is responsible for ejecting the molded workpiece from the lower molding cavity 361 after injection molding, facilitating subsequent processes such as part removal and packaging. The power unit 500 provides power support for the entire molding die 300, ensuring its stable operation. The controller 7 provides unified control and management of the entire injection molding unit, ensuring coordinated operation between various components and realizing the automation and intelligence of the injection molding process.

[0031] Please refer to details. Figure 3 , Figure 4 and Figure 5 The runner separation plate 321 is connected to the upper sealing plate by fixing screws, and the fixing screws pass through the upper sealing plate and the runner separation plate 321 for fixed connection, which facilitates the stable installation and disassembly of the runner separation plate 321, and facilitates subsequent maintenance and component replacement.

[0032] Please refer to details. Figure 3 and Figure 4To facilitate the injection of plastic into the upper molding cavity 3221 and the lower molding cavity 361, the runner separation plate 321 is provided with a gate 821 adapted to the nozzle 82. The nozzle 82 passes through the gate 821 and is connected to the upper molding cavity 3221. This design ensures that the plastic can be accurately injected into the upper molding cavity 3221. At the same time, due to the relative sliding between the runner separation plate 321 and the male mold plate 322, the plastic will also smoothly enter the lower molding cavity 361 during the injection process, realizing simultaneous injection of two workpieces.

[0033] Please refer to details. Figure 5 To position the male mold plate 322 during mold closing, the system includes guide protrusions 3211 respectively located at one end of the runner separation plate 321 relative to the male mold plate 322, and positioning grooves on the male mold plate 322 that are compatible with the guide protrusions 3211. The matching design of the guide protrusions 3211 and the positioning grooves ensures that the male mold plate 322 is accurately positioned during mold closing, effectively avoiding injection molding defects caused by inaccurate positioning and improving the product qualification rate. Specifically, when the moving mold 302 moves towards the fixed mold 301 for mold closing, the guide protrusions 3211 first contact the positioning grooves on the male mold plate 322 and guide the male mold plate 322 to gradually move to the accurate position, so that the upper molding cavity 3221 and the lower molding cavity 361 can be perfectly aligned, providing a reliable guarantee for the smooth injection of plastic and the molding of the workpiece. It also provides precise guidance for the runner separation plate 321 and the male mold plate 322 during separation, preventing misalignment or jamming during separation, and further improving the stability and reliability of the device operation.

[0034] Please refer to details. Figure 5 , Figure 6 and Figure 7The self-separating assembly includes a slide rod 91, a sliding bushing 92, and a return spring 911 disposed on the outer periphery of the slide rod 91, all disposed between the runner separation plate 321 and the male mold plate 322. One end of the slide rod 91 is fixedly connected to the runner separation plate 321, and the other end is slidably disposed within the sliding bushing 92. The sliding bushing 92 is fixedly connected to the male mold plate 322, and both the slide rod 91 and the sliding bushing 92 are designed to be embedded. This embedded design ensures that the slide rod 91 and the sliding bushing 92 remain stable during relative sliding and are not easily disturbed by external factors. During the injection molding process, molten plastic enters the upper molding cavity 3221 and the lower molding cavity 361 through the nozzle 82, and solidifies as the plastic cools. The return spring 911 in the self-separating assembly is compressed during injection molding. After injection molding is completed, the return spring 911 returns to its original state, pushing the slide bar 91 to slide within the sliding bushing 92. This causes the sprue separation plate 321 to separate from the male template 322, allowing the upper molding cavity 3221 to automatically separate from the molded workpiece without manual operation. The molded workpiece is then picked up and unloaded by the suction cup robot 61, greatly improving production efficiency and avoiding potential damage to the workpiece caused by manual separation, thus ensuring the molding quality of the workpiece.

[0035] Please refer to details. Figure 7 One end of the return spring 911 is fixedly connected to the slide rod 91, and the other end of the return spring 911 is fixedly connected to the sliding bushing 92 relative to one end of the slide rod 91. This connection method ensures that when the return spring 911 is compressed or returns to its original state, its force can be directly and effectively transmitted to the slide rod 91 and the sliding bushing 92, thereby causing the gating separation plate 321 to separate from the male mold plate 322. At the same time, this fixed connection method also enhances the overall structural stability of the self-separating assembly, making it less prone to loosening or damage during long-term, high-frequency operation, further extending the service life of the device.

[0036] Please refer to details. Figure 2The ejection mechanism includes an ejector base plate 371, an ejector panel 372 disposed on the upper surface of the ejector base plate 371, a return pin 374 disposed between the ejector panel 372 and the support plate 35, a return spring disposed on the outer periphery of the return pin 374, and an ejector pin 373 disposed on the ejector panel 372. The ejector base plate 371 is fixedly connected to the lower sealing plate 33, providing a stable support foundation for the entire ejection mechanism. The ejector panel 372 is relatively slidably connected to the support plate 35 through the return pin 374. The return spring disposed on the outer periphery of the return pin 374 enables the ejector panel 372 to automatically return to its original position after the ejection action is completed. When the injection molding process is completed, the power housing 500 drives the relevant components in the lower molding mold 300 to move, causing the ejector pin 373 to move upward under the drive of the ejector panel 372, ejecting the molded workpiece from the lower molding cavity 361. Furthermore, the number and position of the ejector pins 373 are rationally set according to the shape and size of the workpiece in the lower molding cavity 361 to ensure that the workpiece can be ejected evenly and stably, avoiding deformation or damage to the workpiece during the ejection process. This ejection mechanism is simple and reliable in design, and can efficiently complete the ejection task of the workpiece. It works in conjunction with other components of the entire fully automatic dual-workpiece injection molding device to achieve efficient and stable injection molding production.

[0037] Please refer to details. Figure 2 The return pin passes through the ejector base plate 371 and is located on the outer side of the ejector panel 372. The support plate 35 is provided with a pin groove that matches the return pin. The pin groove facilitates limiting the upward movement of the return pin. The ejector panel 372 receives the power from the ejector base plate 371 and transmits it to the ejector pin 373. The return pin 374 and the return spring 911 ensure that the ejector panel 372 can automatically reset to prepare for the next ejection operation. The ejector pin 373 on the ejector panel 372 is used to eject the workpiece. The return pin and the pin groove on the support member work together to limit the movement position during the return process and ensure that the ejector pin 373 can accurately return to the initial position.

[0038] Please refer to details. Figure 1 and Figure 2The controller 7 is configured as a programmable logic controller (PLC) and is electrically connected to the spiral injection molding machine 200, the power unit 500, the suction cup robot 61, the gripping robot 62, and the molding die 300. Specifically, the controller 7 precisely controls the injection speed, injection volume, and injection time of the spiral injection molding machine 200 through preset programs and instructions, ensuring that the plastic is injected into the molding die 300 in the appropriate state. Simultaneously, the controller 7 monitors the operating status of the power unit 500 and adjusts the power output in a timely manner according to the mold closing and opening requirements of the molding die 300, ensuring the stable operation of the molding die 300. Furthermore, the controller 7 communicates with the suction cup robot 61 and the gripping robot 62, controlling their timing and action methods to achieve automatic workpiece unloading and handling. Through this comprehensive electrical connection and control, the controller 7 enables the entire fully automatic dual-workpiece injection molding device to achieve highly automated and intelligent production, greatly improving production efficiency and product quality.

[0039] The implementation principle of a fully automatic dual-workpiece injection molding device according to an embodiment of this application is as follows: Mold closing and injection: The controller 7 starts the power housing 500, driving the moving mold 302 to move along the guide post 400 towards the fixed mold 301, completing the mold closing. During the mold closing process, the guide protrusion 3211 first inserts into the positioning groove to achieve the initial positioning of the male mold plate 322 and the sprue separation plate 321. Finally, the male mold plate 322 and the female mold plate 36 are pressed together, and the upper molding cavity 3221 and the lower molding cavity 361 together form a closed cavity. At the same time, the return spring 911 of the self-separation component is compressed, storing elastic potential energy. After the mold is closed, the controller 7 instructs the spiral injection molding machine 200 to inject molten plastic into the mold through the sprue 82 and the gate 821. The molten material first fills the upper molding cavity 3221, and then enters the lower molding cavity 361 through the cavity gap in the runner designed on the side of the male mold plate 322, until both the upper molding cavity 3221 and the lower molding cavity 361 are filled.

[0040] Holding pressure and cooling: After injection molding, the process enters the holding pressure stage to compensate for plastic shrinkage. Then, the cooling stage begins, where the plastic solidifies and sets within the upper molding cavity 3221 and the lower molding cavity 361.

[0041] Mold Opening and Automatic Separation: After cooling, the controller 7 controls the power unit 500 to drive the moving mold 302 backward, initiating mold opening. The moving mold 302 causes the lower forming mold 300 to separate from the upper forming mold 300. Due to the restoring force of the return spring 911, the sliding bushing 92 (along with the male mold plate 322) is pushed outward relative to the slide rod 91 (along with the sprue separation plate 321), meaning the male mold plate 322 tends to move downward relative to the sprue separation plate 321. This relative movement causes the material bundle connecting the workpiece in the upper forming cavity 3221 and the sprue system to be broken, achieving automatic separation. At this time, the upper mold workpiece remains in the upper forming cavity 3221 of the male mold plate 322, while the lower mold workpiece, due to shrinkage, will be tightly wrapped around the ejector pin 373 in the lower forming cavity 361 of the female mold plate 36.

[0042] Ejection and Unloading: Lower Die Workpiece Unloading: After the mold opens to the correct position, the controller 7 triggers the ejection mechanism. The power unit 500 performs a secondary ejection action. The ejector base plate 371 moves upward, driving the ejector panel 372 and ejector pins 373 to eject the lower die workpiece from the lower forming cavity 361. Simultaneously, the gripping robot 62 moves to a predetermined position, grips the ejected workpiece, removes it, and places it in a designated area. After ejection, the ejection mechanism resets under the action of the return spring. Simultaneously or slightly after the ejection action, the suction cup robot 61 moves above the male mold plate 322, using a vacuum suction cup to pick up the workpiece in the upper forming cavity 3221, which is now separated from the sprue. It then picks it up and moves it to the collection point.

[0043] Cycle Reset: After material unloading is completed, all robotic arms reset, and the power unit 500 drives the moving mold 302 forward again to enter the next injection molding cycle. Controller 7 precisely controls the timing sequence of each step to ensure a smooth, efficient, and interference-free production process.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fully automatic dual workpiece injection molding apparatus, characterized by: A rack (100); A screw injection machine (200) arranged at one end of the rack (100); A forming die (300) arranged at a discharging end of the screw injection machine (200); A power machine box (500) for driving the forming die (300); A suction disc type manipulator (61) arranged at one side of the rack (100); A clamping type manipulator (62) arranged at the other side of the rack (100); A controller (7) electrically connected to the screw injection machine (200), the power machine box (500), the suction disc type manipulator (61), the clamping type manipulator (62) and the forming die (300).

2. The full-automatic double workpiece injection molding device according to claim 1, characterized in that: The forming die (300) comprises a fixed die (301) fixedly connected with the rack (100), a movable die (302) slidingly connected with the rack (100) and driven by the power machine box (500), a guide column (400) arranged between the fixed die (301) and the movable die (302), and a gating element arranged between the fixed die (301) and the screw injection machine (200); The fixed die (301) comprises a fixed plate (31) and an upper forming die (300) arranged at a lower end face of the fixed plate (31); The upper forming die (300) comprises a runner separation plate (321) fixedly connected with the fixed plate (31), a male die plate (322) slidingly arranged opposite to the runner separation plate (321), a self-separation assembly arranged between the runner separation plate (321) and the male die plate (322), and an upper forming cavity (3221) arranged at one end of the male die plate (322) relative to the runner separation plate (321); The movable die (302) comprises a lower forming die (300), the lower forming die (300) comprises a lower sealing plate (33), support die feet (34) fixedly connected with both sides of an upper end face of the lower sealing plate (33), a support plate (35) fixedly arranged at an upper end face of the support die feet (34), a female die plate (36) arranged at an upper end face of the support plate (35), a lower forming cavity (361) arranged at one end of the female die plate (36) relative to the male die plate (322), an ejection mechanism arranged at an upper end face of the lower sealing plate (33) and located between the support die feet (34), and the lower sealing plate (33) is connected with an output end of the power machine box (500); The gating element comprises a positioning ring (81) fixedly connected with the fixed plate (31) and a nozzle (82) connected with the positioning ring (81), and the nozzle (82) penetrates through the runner separation plate (321) and communicates with the upper forming cavity (3221); The clamping type manipulator (62) is used for discharging workpieces in the lower forming cavity (361), and the suction disc type manipulator (61) is used for discharging workpieces in the upper forming cavity (3221).

3. The fully automatic dual workpiece injection molding device of claim 2, wherein: The runner separation plate (321) is connected with the fixed plate (31) by a fixing screw, the fixing screw is fixedly connected with the fixed plate (31) and the runner separation plate (321), the runner separation plate (321) is provided with an injection gate (821) matched with the runner (82), and the runner (82) penetrates through the injection gate (821) and is communicated with the upper forming cavity (3221).

4. The fully automatic dual workpiece injection molding device of claim 3, wherein: The guiding protrusion (3211) arranged at one end of the runner separation plate (321) relative to the male mold plate (322) and the positioning groove matched with the guiding protrusion (3211) arranged on the male mold plate (322) are further included.

5. The fully automatic dual workpiece injection molding device of claim 4, wherein: The self-separation assembly comprises a sliding rod (91), a sliding bushing (92) and a reset spring (911). One end of the sliding rod (91) is fixedly connected with the runner separation plate (321), and the other end is slidingly arranged in the sliding bushing (92); the sliding bushing (92) is fixedly connected with the male mold plate (322); and the reset spring (911) is sleeved on the outer periphery of the sliding rod (91).

6. The fully automatic dual workpiece injection molding device of claim 5, wherein: One end of the reset spring (911) is fixedly connected with the sliding rod (91), and the other end is fixedly connected with one end of the sliding bushing (92) relative to the sliding rod (91).

7. The fully automatic dual workpiece injection molding device of claim 6, wherein: The ejection mechanism comprises: A ejector pin bottom plate (371) fixedly connected with the lower sealing plate (33); An ejector pin face plate (372) arranged on the upper end face of the ejector pin bottom plate (371); A reset pin (374) arranged between the ejector pin face plate (372) and the support plate (35); A reset spring sleeved on the outer periphery of the reset pin (374); An ejector pin (373) arranged on the ejector pin face plate (372) and extending into the lower forming cavity (361) through the support plate (35) and the female mold plate (36).

8. The fully automatic dual workpiece injection molding device of claim 7, wherein: The reset pin (374) penetrates through the ejector pin face plate (372) and is arranged outside the ejector pin face plate (372), and the support plate (35) is provided with a pin groove matched with the reset pin (374).

9. The full-automatic double-workpiece injection molding device according to claim 8, characterized in that: The upper forming cavity (3221) and the lower forming cavity (361) have the same or different cavity structures, and are used for synchronously injection molding the same or different workpieces.

10. The full-automatic double-workpiece injection molding device according to claim 9, characterized in that: The controller (7) is a programmable logic controller.

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