Plastic product oil pressure efficient forming machine

Abstract

The utility model discloses a kind of plastic product oil pressure efficient forming machine, comprising: main frame, hydraulic cylinder is fixedly installed in main frame inner top, the outer surface of piston rod in hydraulic cylinder is slidably installed with high-pressure forming mechanism and is in the inside of main frame, and the die end of high-pressure forming mechanism is slidably installed at the outer surface of guide rail rod, while guide rail rod is fixedly installed at the lower surface of the lower half in main frame, and hydraulic cylinder is controlled to variable-frequency hydraulic system, variable-frequency hydraulic system is composed of variable-frequency motor, frequency converter and hydraulic pump. Through the design of high-pressure forming mechanism and variable-frequency hydraulic system, the problem of high energy consumption and insufficient adjustment accuracy of the forming machine is solved. With the precise cooperation of high-pressure tank, piston column and other components, the synchronization of raw material pushing and mold closing is realized. Combined with the guiding effect of guide rail rod and disc, the mold closing accuracy is guaranteed, so that the efficient connection of "injection molding-mold closing-molding-mold opening" is realized by the linkage of each component.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molding machinery and equipment, specifically a high-efficiency hydraulic molding machine for plastic products. Background Technology

[0002] The working principle of a plastic product molding machine is similar to that of a syringe. It uses the thrust of a screw (or plunger) to inject pre-plasticized molten plastic (i.e., a viscous flow state) into a closed mold cavity. After solidification and shaping, the finished product is obtained. Injection molding is a cyclical process. Each cycle mainly includes: metered feeding – melting and plasticizing – injection under pressure – mold filling and cooling – mold opening and part removal. After the plastic part is removed, the mold is closed again, and the next cycle begins.

[0003] For example, the national authorized patent announcement number CN206520149U discloses an intelligent molding machine for plastic products, including a frame box, an electrical control box installed on the frame box, a hydraulic lifting platform installed inside the frame box, a worktable installed on the hydraulic lifting platform, a linear guide rail installed on the worktable, a first guide rail slider installed on the linear guide rail, a lower mold base installed on the first guide rail slider, an upper mold base installed directly above the lower mold base, the upper mold base and the lower mold base are used together, the upper mold base is installed on the guide rail via a second guide rail slider, a nozzle is installed above the upper mold base, the nozzle is installed at the bottom of the heater via an electric push rod, an injection device is installed inside the heater, the nozzle is connected to the injection device via a connecting pipe, a hopper is installed on the top of the injection device, and an injection cylinder is installed on one side of the hopper. This plastic product molding machine is easy to use and easy to transport.

[0004] However, the aforementioned intelligent molding machine for plastic products uses a traditional hydraulic drive mode of "hydraulic lifting platform + injection cylinder". Due to the lack of a core design of a variable frequency hydraulic system, it needs to consume redundant energy through components such as throttle valves when the load changes (such as mold closing of the upper mold base and fluctuations in injection pressure). This results in high energy consumption, and the speed adjustment depends on the throttling of the valve group, making it difficult to adapt to the requirements of high-precision molding for gradual speed changes. Summary of the Invention

[0005] The purpose of this utility model is to provide a high-efficiency hydraulic molding machine for plastic products, in order to solve the problems mentioned in the background art. The above-mentioned intelligent molding machine for plastic products adopts the traditional hydraulic drive mode of "hydraulic lifting platform + injection cylinder". Due to the lack of a variable frequency hydraulic system, it needs to consume redundant energy through the throttle valve when the load changes, resulting in high energy consumption. Moreover, the speed adjustment depends on the throttling of the valve group, which is difficult to adapt to the requirements of high-precision molding for gradual speed changes, thus affecting molding efficiency, accuracy and energy utilization.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A high-efficiency hydraulic molding machine for plastic products includes: a main frame, a hydraulic cylinder fixedly installed at the top of the main frame, a high-pressure molding mechanism slidably installed on the outer surface of the piston rod inside the hydraulic cylinder and located inside the main frame, and the mold end of the high-pressure molding mechanism slidably installed on the outer surface of the guide rail rod, while the guide rail rod is fixedly installed on the lower surface of the lower half inside the main frame, and the hydraulic cylinder is controlled by a variable frequency hydraulic system, the variable frequency hydraulic system consisting of a variable frequency motor, a frequency converter and a hydraulic pump.

[0007] Preferably, the speed of the variable frequency motor is adjusted by the frequency converter, thereby controlling the oil flow and pressure output by the hydraulic pump, driving the piston rod of the hydraulic cylinder to extend and retract, and finally driving the high-pressure forming mechanism to slide up and down along the guide rail, realizing the mold closing, pressing and forming and other actions, so that it has the dual characteristics of power output and precise guidance.

[0008] Preferably, the variable frequency motor, frequency converter, and hydraulic pump in the variable frequency hydraulic system are all controlled by a PLC controller.

[0009] Preferably, an injection molding machine is fixedly installed at one end of the main frame, and a stainless steel corrugated pipe is connected to one end of the discharge port on the lower surface of the injection molding machine. The other end of the stainless steel corrugated pipe is connected to the high-pressure molding mechanism, so that the injection molding machine can stably transport the molten plastic raw material through the stainless steel corrugated pipe and store it in the mold cavity of the high-pressure molding mechanism.

[0010] Preferably, the outer surface of the stainless steel corrugated pipe is wrapped with an insulation layer, which can reduce the temperature loss of plastic raw materials during the transportation process and avoid the decrease in fluidity caused by the cooling of raw materials. At the same time, its corrugated pipe structure has a certain degree of flexibility, which allows it to adapt to the positional displacement caused by the high-pressure molding mechanism sliding up and down along the guide rail, ensuring the continuity and sealing of raw material transportation.

[0011] Preferably, the drive motor of the injection molding machine is controlled by the PLC controller, so that the material output rate of the injection molding machine and the action rhythm of the high pressure molding mechanism are coordinated through the PLC controller. After the high pressure molding mechanism completes the mold closing action, the PLC controller sends a command to the injection molding machine to start discharging material, and stops when the material is filled to the preset amount, so as to achieve seamless connection of the "injection molding" process.

[0012] Preferably, the high-pressure forming mechanism includes a high-pressure tank, which is slidably mounted on the outer surface of the piston rod of the hydraulic cylinder and simultaneously connected to a stainless steel bellows. A filling pipe is installed on the lower surface of the high-pressure tank, and the filling pipe slides through the stop plate and is sealed to the filling port of the upper mold by a flange. The stop plate is fixedly installed in the main frame.

[0013] Preferably, a disc is installed at each of the four corners of the outer surface of the upper mold, and the disc is slidably installed on the outer surface of the four sets of guide rails.

[0014] Preferably, a piston rod and a pusher plate are fixedly installed on the outer surface of the piston rod, which is included in the high-pressure tank sliding sleeve. The pusher plate is slidably installed inside the high-pressure tank, while the piston rod can slide into the filling pipe as the piston rod pushes.

[0015] Preferably, during the process of the piston rod sliding into the filling tube, it will drive the pusher plate to slide down in the high-pressure tank to push the remaining molten plastic material into the filling tube. The pusher plate will also drive the high-pressure tank to connect with the upper mold and lower mold installed on the lower surface through the filling tube. At the same time as the upper mold and lower mold are connected, the top of the high-pressure tank will touch the upper surface of the stop plate and be stopped. The lower mold is fixedly installed on the lower surface of the main frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. Through the linkage design of the high-pressure tank, piston column and pusher plate, the piston rod can push the molten raw material into the cavity through the injection tube when it moves down, and at the same time drive the upper mold and lower mold to assemble. This avoids the time waste caused by the separate steps of raw material transportation and mold closing in traditional equipment. At the same time, the sealing sliding of the pusher plate can completely push the raw material in the high-pressure tank into the cavity. Combined with the filling push of the piston column to the injection tube, it reduces raw material residue and waste generation. It is especially suitable for high-precision, small-batch plastic product production.

[0017] 2. The upper mold slides along four sets of guide rails via four corner discs, and the stop plate stops and limits the high-pressure tank, ensuring that the positioning error is controlled within a very small range when the upper and lower molds are assembled. In addition, the pressure transmitted by the piston rod is evenly applied to the mold cavity through the piston column and injection pipe, avoiding product deformation, material shortage and other defects caused by uneven local pressure. Compared with the traditional equipment that relies on a single guide rail, this structure significantly improves the consistency of mold closing and makes the dimensional accuracy and surface quality of the molded products more stable.

[0018] 3. The sealing fit between the high-pressure tank and the push plate prevents leakage of molten raw materials, avoiding contamination of the equipment or potential safety hazards. The stop plate stops the high-pressure tank at the mold closing end, effectively buffering the impact force and reducing rigid collision wear between the mold and the frame. At the same time, the sliding fit of each moving part is precisely designed to reduce friction and wear. Combined with the precise control of the variable frequency hydraulic system by the PLC controller, overload operation is avoided, greatly improving the long-term stability of the equipment and reducing maintenance costs. Attached Figure Description

[0019] Figure 1This is a structural diagram of the overall mold-closing and injection state of this utility model; Figure 2 This is a structural diagram of the overall mold opening and material handling state of this utility model; Figure 3 This is a schematic diagram of the high-pressure forming mechanism of this utility model.

[0020] In the diagram: 1. Main frame; 101. Hydraulic cylinder; 102. Injection molding machine; 103. Guide rail; 104. Stainless steel corrugated pipe; 105. Stop plate; 106. Variable frequency hydraulic system; 2. High pressure molding mechanism; 201. High pressure tank; 202. Piston column; 203. Push plate; 204. Injection pipe; 205. Upper mold; 206. Lower mold; 207. Disc. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-3 This embodiment provides the following technical solution: like Figures 1-2 As shown, a high-efficiency hydraulic molding machine for plastic products includes: a main frame 1, a hydraulic cylinder 101 fixedly installed at the top inside the main frame 1, a high-pressure molding mechanism 2 slidably installed on the outer surface of the piston rod inside the hydraulic cylinder 101 and located inside the main frame 1, and the mold end of the high-pressure molding mechanism 2 slidably installed on the outer surface of the guide rail rod 103, while the guide rail rod 103 is fixedly installed on the lower surface of the lower half inside the main frame 1, and the hydraulic cylinder 101 is controlled by a variable frequency hydraulic system 106, which consists of a variable frequency motor, a frequency converter and a hydraulic pump.

[0023] The variable frequency motor's speed is adjusted by a frequency converter, which in turn controls the flow rate and pressure of the hydraulic pump, driving the piston rod of the hydraulic cylinder 101 to extend and retract. Ultimately, this drives the high-pressure forming mechanism 2 to slide up and down along the guide rail 103, realizing actions such as mold closing and pressing, thus giving it both power output and precise guidance characteristics. The variable frequency motor, frequency converter, and hydraulic pump in the variable frequency hydraulic system 106 are all controlled by a PLC controller.

[0024] An injection molding machine 102 is fixedly installed at one end of the main frame 1. A stainless steel corrugated pipe 104 is connected to one end of the discharge port on the lower surface of the injection molding machine 102. The other end of the stainless steel corrugated pipe 104 is connected to the high pressure molding mechanism 2, so that the injection molding machine 102 can stably transport the molten plastic raw material through the stainless steel corrugated pipe 104 and store it in the mold cavity of the high pressure molding mechanism 2.

[0025] The outer surface of the stainless steel corrugated pipe 104 is wrapped with an insulation layer, which can reduce the temperature loss of plastic raw materials during the transportation process and avoid the decrease in fluidity caused by the cooling of raw materials. At the same time, its corrugated pipe structure has a certain degree of flexibility, which allows it to adapt to the positional displacement caused by the high pressure molding mechanism 2 sliding up and down along the guide rod 103, ensuring the continuity and sealing of raw material transportation.

[0026] The drive motor of the injection molding machine 102 is controlled by the PLC controller, so that the material output rate of the injection molding machine 102 and the action rhythm of the high pressure molding mechanism 2 are coordinated through the PLC controller. When the high pressure molding mechanism 2 completes the mold closing action, the PLC controller sends a command to the injection molding machine 102 to start discharging material. When the material is filled to the preset amount, it stops, realizing the seamless connection of the "injection molding" process.

[0027] Through the design of hydraulic cylinder 101, injection molding machine 102, guide rail 103, stainless steel corrugated pipe 104, stop plate 105, variable frequency hydraulic system 106, and high-pressure molding mechanism 2, after the high-pressure molding mechanism 2 is assembled, the PLC controller can start the injection molding machine 102, allowing the injection molding machine 102 to transport the molten plastic raw material through the discharge port to the stainless steel corrugated pipe 104. The stainless steel corrugated pipe 104 then allows the molten plastic raw material to be injected into the high-pressure molding mechanism 2. The insulation layer on the outside of the stainless steel corrugated pipe 104 reduces the temperature loss of the raw material and maintains its fluidity. Furthermore, the flexibility of the stainless steel corrugated pipe 104 adapts to the upward displacement of the high-pressure molding mechanism 2, ensuring that the raw material is stably delivered to the mold of the high-pressure molding mechanism 2. The material is temporarily stored inside the cavity. When the material is delivered to the preset amount, the PLC controller instructs the injection molding machine 102 to stop discharging. At the same time, it sends a signal to the variable frequency hydraulic system 106 to increase the speed of the variable frequency motor and increase the output flow of the hydraulic pump. The piston rod of the hydraulic cylinder 101 extends downward and pushes the high-pressure molding mechanism 2 to press and mold the plastic material in the mold cavity. After molding is completed, the PLC controller instructs the variable frequency hydraulic system 106 to operate in reverse. The piston rod of the hydraulic cylinder 101 retracts upward and drives the high-pressure molding mechanism 2 to move upward along the guide rail 103, realizing the mold separation of the high-pressure molding mechanism 2, completing a molding cycle and achieving efficient connection of "injection molding-mold closing-molding-mold opening", improving the molding quality and production efficiency of plastic products. like Figure 3As shown, the high-pressure forming mechanism 2 includes a high-pressure tank 201. The high-pressure tank 201 is slidably mounted on the outer surface of the piston rod of the hydraulic cylinder 101 and is simultaneously connected to a stainless steel bellows pipe 104. A filling pipe 204 is installed on the lower surface of the high-pressure tank 201. The filling pipe 204 slides through a stop plate 105 and is sealed to the filling port of the upper mold 205 via a flange. The stop plate 105 is fixedly installed inside the main frame 1. A disc 207 is installed at each of the four corners of the outer surface of the upper mold 205, and the disc 207 is slidably mounted on the outer surface of four sets of guide rails 103. A piston rod 202 and a pusher plate 203 are fixedly mounted on the outer surface of the piston rod, which is slidably mounted inside the high-pressure tank 201. The pusher plate 203 is slidably mounted inside the high-pressure tank 201, while the piston rod 202 can slide into the filling pipe 204 as the piston rod is pushed. As the piston rod 202 slides into the filling tube 204, it will also drive the pusher plate 203 to slide down in the high pressure tank 201 to push the remaining molten plastic material into the filling tube 204. The pushed pusher plate 203 will also drive the high pressure tank 201 to move through the filling tube 204 to connect the upper mold 205 and the lower mold 206 installed on the lower surface to fit together. At the same time as the upper mold 205 and the lower mold 206 fit together, the high pressure tank 201 will be stopped at the upper surface of the stop plate 105. The lower mold 206 is fixedly installed on the lower surface of the main frame 1.

[0028] Through the design of the high-pressure tank 201, piston rod 202, pusher plate 203, filling pipe 204, upper mold 205, and lower mold 206, after the equipment is started, the hydraulic cylinder 101 can be controlled to push the piston rod 202 and pusher plate 203 downward. The downward movement of the pusher plate 203 allows the high-pressure tank 201, which is slidably mounted on the outer surface, to slide down the outer surface of the piston rod under gravity until the high-pressure tank 201 touches the upper surface of the stop plate 105 and is stopped. The continuous pushing of the hydraulic cylinder 101 is then stopped. The downward movement of the high-pressure tank 201 can then drive the upper mold 205 through the filling pipe 204 and guide it through the four corner discs 207. The outer surface of the guide rod 103 slides vertically down and can precisely assemble with the lower mold 206. Then, the injection molding machine 102 can be started to transport molten plastic material to the high-pressure tank 201 through the stainless steel corrugated pipe 104. The PLC controller instructs the variable frequency hydraulic system 106 to drive the piston rod of the hydraulic cylinder 101 to extend downwards. At this time, the piston column 202 on the outer surface of the piston rod moves downwards synchronously with the piston rod, gradually sliding into the filling pipe 204 connected to the lower surface of the high-pressure tank 201. Simultaneously, the piston rod will drive the pusher plate 203 to slide down in a sealed manner within the high-pressure tank 201, thereby evenly pushing the temporarily stored molten plastic material into the filling pipe 204. 04. The molten material pushed in is continuously injected into the cavity where the upper mold 205 and lower mold 206 are about to be assembled, through the injection port of the upper mold 205 connected by a flange seal. When the piston rod 202 is completely slid into the injection pipe 204, the pusher plate 203 has pushed all the material in the high-pressure tank 201 into the cavity. During this process, the upper mold 205 and lower mold 206 are subjected to pressure through the continuously pushed piston rod, which is transmitted to the mold through the piston rod 202 and the injection pipe 204 to perform high-pressure molding of the material in the cavity. After molding is completed, the PLC controller instructs the frequency conversion hydraulic system 106 to operate in reverse, the piston rod of the hydraulic cylinder 101 retracts upward, and drives the piston rod 202 to retract upward. 2. The material is pulled out from the filling tube 204, and the pusher plate 203 moves upward and resets. At the same time, it drives the high-pressure tank 201 and the upper mold 205 to move upward along the guide rail 103 under the action of tension, thereby realizing the separation of the upper mold 205 and the lower mold 206, completing one molding cycle. Throughout the process, the sealed cooperation between the high-pressure tank 201 and the pusher plate 203 ensures no leakage of raw materials. The precise sliding of the piston column 202 and the filling tube 204 realizes the quantitative delivery of raw materials. The guidance of the disc 207 and the guide rail 103 ensures the mold closing accuracy. The limiting function of the stop plate 105 ensures the molding safety. All components work together to realize the integrated and efficient operation of "raw material delivery - mold closing - high pressure molding".

[0029] Based on the above technical solution, the working steps of this solution are summarized as follows: During use, the hydraulic cylinder 101 can be controlled to push the piston rod 202 and the pusher plate 203 downwards. The downward movement of the pusher plate 203 allows the high-pressure tank 201, which is slidably mounted on its outer surface, to slide down the outer surface of the piston rod under gravity until the high-pressure tank 201 touches the upper surface of the stop plate 105 and is stopped. At this point, the continuous pushing of the hydraulic cylinder 101 stops. The downward-moving high-pressure tank 201 then drives the upper mold through the filling pipe 204. 205 slides vertically down the outer surface of the guide rail 103 via the four corner discs 207 and can precisely assemble with the lower mold 206. Then, the injection molding machine 102 can be started to transport the molten plastic material to the high-pressure tank 201 through the stainless steel corrugated pipe 104. The PLC controller then instructs the frequency conversion hydraulic system 106 to drive the piston rod of the hydraulic cylinder 101 to extend downwards. At this time, the piston column 202 on the outer surface of the piston rod moves downwards synchronously with the piston rod, gradually sliding into the injection pipe 204 connected to the lower surface of the high-pressure tank 201. Simultaneously, the piston rod will... Simultaneously, the pusher disc 203 slides down sealed inside the high-pressure tank 201, uniformly pushing the temporarily stored molten plastic material into the filling pipe 204. The filling pipe 204, connected to the filling port of the upper mold 205 via a flange seal, continuously injects the pushed molten material into the cavity where the upper mold 205 and lower mold 206 are about to be assembled. When the piston rod 202 is completely slid into the filling pipe 204, the pusher disc 203 has pushed all the material in the high-pressure tank 201 into the cavity. During this process, the upper mold 205 and lower mold 206 will continuously push... The piston rod is pressurized and transmitted to the mold through the piston column 202 and the injection pipe 204, which performs high-pressure molding on the raw material in the cavity. After molding is completed, the PLC controller instructs the frequency conversion hydraulic system 106 to operate in reverse. The piston rod of the hydraulic cylinder 101 retracts upward, driving the piston column 202 to be pulled out from the injection pipe 204. The pusher plate 203 moves upward and resets, and at the same time drives the high-pressure tank 201 and the upper mold 205 to move upward along the guide rail 103 under the action of tension, thereby realizing the separation of the upper mold 205 and the lower mold 206, and completing one molding cycle.

[0030] In summary, the high energy consumption and insufficient adjustment precision of the molding machine are solved through the collaboration of the variable frequency hydraulic system 106 and the PLC controller. With the precise cooperation of components such as the high pressure tank 201 and the piston column 202, the material pushing and mold closing are synchronized. At the same time, the guiding effect of the guide rail rod 103 and the disc 207 ensures the mold closing accuracy. This allows the linkage of various components to achieve efficient connection of "injection molding-mold closing-molding-mold opening", which significantly improves molding quality, production efficiency and energy utilization. It is suitable for high-precision, high-volume production scenarios of plastic products.

[0031] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model 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 this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic product oil pressure efficient forming machine, characterized by, include: The main frame (1) has a hydraulic cylinder (101) fixedly installed at the top inside the main frame (1). A high-pressure forming mechanism (2) is slidably installed on the outer surface of the piston rod inside the hydraulic cylinder (101) and is located inside the main frame (1). The mold end of the high-pressure forming mechanism (2) is slidably installed on the outer surface of the guide rail rod (103). The guide rail rod (103) is fixedly installed on the lower half of the lower surface inside the main frame (1). The hydraulic cylinder (101) is controlled by a variable frequency hydraulic system (106). The variable frequency hydraulic system (106) consists of a variable frequency motor, a frequency converter and a hydraulic pump.

2. The oil pressure efficient forming machine for plastic products according to claim 1, characterized in that: The variable frequency motor, frequency converter, and hydraulic pump in the variable frequency hydraulic system (106) are all controlled by a PLC controller.

3. The high-efficiency hydraulic molding machine for plastic products according to claim 1, characterized in that: One end of the main frame (1) is fixedly installed with an injection molding machine (102). One end of the discharge port on the lower surface of the injection molding machine (102) is connected to a stainless steel corrugated pipe (104). The other end of the stainless steel corrugated pipe (104) is connected to the high pressure molding mechanism (2). The injection molding machine (102) can stably transport the molten plastic raw material through the stainless steel corrugated pipe (104) and store it in the mold cavity of the high pressure molding mechanism (2).

4. The high-efficiency hydraulic molding machine for plastic products according to claim 3, characterized in that: The outer surface of the stainless steel corrugated pipe (104) is covered with a heat insulation layer.

5. The high-efficiency hydraulic molding machine for plastic products according to claim 4, characterized in that: The drive motor of the injection molding machine (102) is controlled by the PLC controller.

6. The high efficiency oil hydraulic plastic product molding machine as claimed in claim 5, wherein: The high-pressure forming mechanism (2) includes a high-pressure tank (201), which is slidably mounted on the outer surface of the piston rod of the hydraulic cylinder (101) and simultaneously connected to a stainless steel bellows (104).

7. The high-efficiency hydraulic molding machine for plastic products according to claim 6, characterized in that: The lower surface of the high-pressure tank (201) is connected to a filling pipe (204). The filling pipe (204) slides through the stop plate (105) and is sealed to the filling port of the upper mold (205) by a flange. The stop plate (105) is fixedly installed in the main frame (1).

8. The high-efficiency hydraulic molding machine for plastic products according to claim 7, characterized in that: The upper mold (205) has a disc (207) installed at each of its four corners. The disc (207) is slidably installed on the outer surface of the four sets of guide rails (103).

9. The high-efficiency hydraulic molding machine for plastic products according to claim 8, characterized in that: A piston rod (202) and a pusher plate (203) are fixedly installed on the outer surface of the piston rod, which is included in the sliding sleeve of the high-pressure tank (201). The pusher plate (203) is sealed and slidably installed in the high-pressure tank (201), while the piston rod (202) can slide into the filling pipe (204) as the piston rod is pushed.

10. The oil pressure efficient forming machine for plastic products according to claim 9, characterized in that: As the piston rod (202) slides into the filling tube (204), it will drive the pusher plate (203) to slide down in the high pressure tank (201) to push the remaining molten plastic material into the filling tube (204). The pusher plate (203) will also drive the high pressure tank (201) to drive the upper mold (205) and lower mold (206) connected to the lower surface through the filling tube (204) to fit together. At the same time as the upper mold (205) and lower mold (206) fit together, the high pressure tank (201) will be stopped at the upper surface of the stop plate (105). The lower mold (206) is fixedly installed on the lower surface of the main frame (1).

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