A liquid silicone injection molding machine

Abstract

The present invention relates to a liquid silicone injection molding machine, comprising a frame, a mold clamping module disposed on the top of the frame, a glue injection module mounted on the mold clamping module, and a controller for controlling the mold clamping module to perform mold clamping and glue injection. The mold clamping module comprises a mold clamping assembly, a mold clamping drive assembly for driving the mold clamping assembly to perform mold clamping, an electronic mold opening and closing scale disposed on the mold clamping assembly and connected to the controller, a positioning assembly for positioning the mold clamping assembly, and a mold ejection mechanism for ejecting the product produced by the mold clamping assembly. The glue injection module comprises a glue injection drive assembly for driving a gun barrel to perform glue injection via a mixing assembly, an electronic glue injection scale, a pressure sensor, and a rotary encoder disposed on the glue injection drive assembly and electrically connected to the controller. The controller is mounted on the frame via a mounting cantilever. The liquid silicone injection molding machine provided by the present invention can enhance user satisfaction with the glue injection experience by improving glue injection accuracy, while also improving glue injection efficiency and product quality.

Description

Technical Field

[0001] The invention relates to the technical field of liquid silicone injection, in particular to a liquid silicone injection molding machine. Background Art

[0002] Silica gel is a highly active adsorption material, an amorphous substance that does not react with any substance except strong bases and hydrofluoric acid. It is insoluble in water and all solvents, non-toxic, odorless, and chemically stable. Different types of silica gel have different microporous structures due to their different manufacturing methods. The chemical composition and physical structure of silica gel give it many characteristics that are difficult to replace with other similar materials: high adsorption performance, excellent thermal stability, stable chemical properties, and high mechanical strength.

[0003] With the continuous improvement of people's living standards and silicone manufacturing technology, liquid silicone rubber has emerged as a new application. Compared to solid high-temperature vulcanized silicone rubber, liquid silicone rubber is a liquid rubber with good fluidity, fast vulcanization, greater safety and environmental protection, and can fully meet food grade requirements. Liquid silicone rubber also has excellent tear strength, resilience, yellowing resistance, thermal stability, and heat aging resistance. It is mainly used in children's products, medical supplies, and electronic products (such as buttons).

[0004] As we all know, liquid silicone molding typically requires an injection molding machine. An injection molding machine, a type of plastics machinery, is used to convert thermoplastics or thermosetting materials into various shapes using plastic molding molds. However, existing liquid silicone injection molding machines suffer from low injection accuracy, significantly reducing user satisfaction with the injection experience. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a liquid silicone injection molding machine that can improve the user's injection experience satisfaction by improving the injection accuracy.

[0006] A liquid silicone injection molding machine comprises a frame, a mold clamping module arranged on the top of the frame, a glue injection module installed on the mold clamping module, and a controller for controlling the mold clamping module to clamp the mold and controlling the glue injection module to inject glue. The mold clamping module comprises a mold clamping assembly, a mold clamping drive assembly for driving the mold clamping assembly to clamp the mold, a positioning assembly for positioning the mold clamping assembly, and a mold ejection mechanism for ejecting the product produced by the mold clamping assembly; the glue injection module comprises a barrel assembly and a glue injection drive assembly.

[0007] In addition, the liquid silicone injection molding machine provided by the present invention may also have the following additional technical features:

[0008] Furthermore, the glue injection drive assembly includes a shooting seat cylinder installed on the upper template and a push plate provided at the output end of the shooting seat cylinder, a barrel is installed below the push plate, and the barrel is used to inject the glue into the mold installed in the clamping assembly, and a linear moving part is installed above the push plate, and the linear moving part consists of a screw and a servo motor. The servo motor drives the screw to rotate by rotation, thereby generating a linear moving power acting on the push plate to generate an injection thrust for the injection effect on the barrel.

[0009] Furthermore, a pressure sensor for detecting injection pressure is installed in the barrel, and the pressure sensor is connected to the controller to feed back the measured pressure value to the controller. The controller adjusts the speed of the servo motor according to the fed-back pressure value to achieve stable pressure output.

[0010] Furthermore, the mold clamping assembly includes an upper template and a lower template connected to the middle template through a Green column, and the upper template, the middle template and the lower template can all slide along the axial direction of the Green column.

[0011] Furthermore, the mold closing drive assembly includes a mold opening and closing cylinder and a high-pressure cylinder arranged between the lower mold plate and the middle mold plate. The output shaft of the mold opening and closing cylinder extends or retracts to pull the lower mold plate to perform up and down movements. The high-pressure cylinder outputs a downward thrust to the lower mold plate to clamp the mold after closing the mold.

[0012] Furthermore, the middle template is provided with a slide plate that can slide left and right. The positioning assembly includes a latch mechanism and a latch. One end of the latch mechanism is fixedly connected to the lower template, and the other end cooperates with the latch hole on the slide plate through the latch.

[0013] Furthermore, there are two ejector mechanisms, which are respectively arranged at the bottom of both ends of the slide. One end of the ejector mechanism is fixedly connected to the frame, and the other end can move toward or away from the slide.

[0014] Furthermore, the mixing assembly includes a dynamic screw, a screw transmission mechanism and a rotating mechanism. The glue outlet of the dynamic screw is connected to the glue inlet of the barrel. The dynamic screw is installed on the screw bracket and is connected to the rotating mechanism through the screw transmission mechanism. When the rotating mechanism rotates, the rotational power is transmitted to the core of the dynamic screw through the transmission mechanism, so that the core of the dynamic screw stirs the raw materials.

[0015] Furthermore, the mold clamping module also includes an electronic ruler for opening and closing the mold, which is arranged on the mold clamping assembly and connected to the controller. The controller is installed on the frame through a mounting cantilever, and the controller is rotatably connected to the mounting cantilever.

[0016] The liquid silicone injection molding machine proposed in the present invention includes a frame, a mold clamping module arranged on the top of the frame, a glue injection module installed on the mold clamping module, and a controller for controlling the mold clamping module to perform mold clamping and controlling the glue injection module to perform glue injection; when the liquid silicone injection molding machine is performing the mold clamping action, the glue injection module is reset, and material is injected into the mixing component in the glue injection module, the ejection mechanism completes the ejection, and the mold core on the ejection mechanism is heated, and the glue injection drive component in the glue injection module injects glue into the barrel for vulcanization, and opens the mold after the glue injection and vulcanization; the accuracy of the glue injection of the barrel is controlled according to the obtained glue injection execution parameters, the position of the barrel and the power value of the glue injection drive component, and the glue injection pressure of the barrel is adjusted according to the difference between the pressure value obtained by the pressure sensor and the target value, so that the accuracy and reliability of the glue injection are further improved. The present invention solves the problem of low glue injection accuracy of the existing liquid silicone injection molding machine, thereby improving the user's satisfaction with the glue injection experience, while improving the glue injection efficiency and the quality of the molded product, meeting the actual application needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the assembly structure of the liquid silicone injection molding machine in the first embodiment of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the structure of the middle clamping module;

[0019] Figure 3 for Figure 2 Schematic diagram of the structure of the center injection module.

[0020] Description of main component symbols:

[0021] frame 10 Clamping module 20 Mold clamping components 21 Upper template 211 Medium template 212 Download template 213 Green Column 214 Clamping drive components 22 Mold opening and closing cylinder 221 High-pressure cylinder 222 Electronic ruler for mold opening and closing 23 Positioning components 24 Latch mechanism 241 plug 242 Ejector mechanism 25 Electric linear actuator 251 Mounting plate 252 mandrel 253 security door 26 Glue injection module 30 Hybrid components 31 Dynamic Screw 311 Screw drive mechanism 312 Rotation mechanism 313 barrel 32 Glue drive components 33 Shooting seat cylinder 331 Push Plate 332 Linear moving parts 333 Glue injection electronic ruler 34 Controller 40 skateboard 50

[0022] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0023] To make the objects, features, and advantages of the present invention more readily apparent, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The accompanying drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be an element centered thereon. The terms "vertical", "horizontal", "left", "right", "up", "down" and similar expressions used herein are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0025] In the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," and the like should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0026] like Figures 1 to 3 As shown, a liquid silicone injection molding machine includes a frame 10, a mold clamping module 20 arranged on the top of the frame 10, a glue injection module 30 installed on the mold clamping module 20, and a controller 40 for controlling the mold clamping module 20 to clamp the mold and controlling the glue injection module 30 to inject glue. The controller is a single-chip microcomputer or an ARM series development board.

[0027] Furthermore, the frame 10 supports the entire machine and includes a footrest, a bracket detachably connected to the ground, and a work platform located on top of the bracket. The work platform is provided with a left start button and a right start button electrically connected to the controller 40. The right start button activates the machine's automatic process when the slide 50 is in the right position (i.e., with the mold clamped on the right side and in automatic mode); it is inactive in other positions. The left start button activates the machine's automatic process when the slide 50 is in the left position (i.e., with the mold clamped on the left side and in automatic mode); it is inactive in other positions.

[0028] Furthermore, the mold clamping module 20 includes a mold clamping assembly 21, a mold clamping drive assembly 22 that drives the mold clamping assembly 21 to close the mold, an electronic mold opening and closing ruler 23 provided on the mold clamping assembly 21 and connected to the controller 40, a positioning assembly 24 that positions the mold clamping assembly 21, and a mold ejection mechanism 25 that ejects the product produced by the mold clamping assembly 21. The electronic mold opening and closing ruler 23 is used to measure the position of the mold plate and convert the position signal into an analog signal and feed it back to the controller 40.

[0029] Specifically, the mold clamping assembly 21 includes an upper mold plate 211 and a lower mold plate 213 connected to the middle mold plate 212 via a Green post 214. The upper mold plate 211, the middle mold plate 212, and the lower mold plate 213 can all slide along the axial direction of the Green post 214. It is understood that the upper mold plate 211 and the lower mold plate 213 are connected together by the Green post 214. The Green post 214 passes through the guide post hole of the middle mold plate 212 and can move up and down. The function of the Green post 214 is to withstand the clamping force when the machine performs the mold clamping action. The upper mold plate 211 is a movable flat plate installed at the upper end of the Green post 214. When the Green post 214 moves up and down, it drives the upper mold plate 211 up and down. The upper mold plate 211 is designed with multiple holes for mounting the upper mold of the mold, so that the upper mold of the mold is fixed to the upper mold plate 211 and moves up and down to achieve the function of opening and closing the mold.

[0030] Specifically, the mold clamping drive assembly 22 includes a mold opening and closing cylinder 221 and a high-pressure cylinder 222 disposed between the lower mold plate 213 and the middle mold plate 212. The output shaft of the mold opening and closing cylinder 221 extends or retracts to pull the lower mold plate 213 to perform up and down motion. The high-pressure cylinder 222 outputs a downward thrust to the lower mold plate 213 after the mold is closed to clamp the mold. It will be understood that when the output shaft of the mold opening and closing cylinder 221 extends or retracts, it pulls the lower mold plate 213 to perform up and down motion. The high-pressure cylinder 222 is primarily used to output a large thrust after the mold is closed, so that the lower mold plate 213 obtains a large downward thrust, thereby generating a large clamping force between the upper mold plate 211 and the lower mold plate 213 to clamp the mold.

[0031] Specifically, the middle template 212 is also provided with a slide 50 that can slide left and right. The slide 50 is a rectangular flat plate that slides via a slide rail. The flat plate is designed with two left and right template areas, each of which is designed with multiple screw holes to facilitate the installation of the lower mold of the mold. The slide 50 can slide left and right along a straight line, thereby moving the left and right molds into or out of the mold clamping area. The positioning assembly 24 includes a latch mechanism 241 and a latch 242. One end of the latch mechanism 241 is fixedly connected to the lower template 213, and the other end of the latch mechanism 241 cooperates with the latch hole on the slide 50 through the latch 242 to prevent the sliding of the slide 50 from affecting the installation accuracy of the mold and thus affecting the injection accuracy. The latch mechanism 241 can be an electric telescopic rod or a hydraulic push rod electrically connected to the controller 40. The latch mechanism 241 or the slide 50 is provided with a corresponding displacement sensor connected to the controller 40 to determine the relative displacement of the slide 50 and the latch mechanism 241 and limit the position according to the displacement difference. It can be understood that the positioning assembly 24 is used to push out the latch 242 from the latch mechanism 241 and insert it into the latch hole of the skateboard 50 after the skateboard 50 slides into place to ensure that the skateboard 50 has accurately slid into place and to limit the skateboard 50 at the same time.

[0032] Specifically, there are two ejector mechanisms 25, which are respectively arranged at the bottom of both ends of the slide 50. One end of the ejector mechanism 25 is fixedly connected to the frame 10, and the other end can move in the direction close to or away from the slide 50. The ejector mechanism 25 includes an electric push rod 251 and a push rod 253 fixedly connected to the output end of the electric push rod 251 through a mounting plate 252. The number of the push rods 253 is four and they are distributed in a rectangular shape. The electric push rod 251 is electrically connected to the controller 40, and is used to control the electric push rod 251 to extend through PWM after the product is formed, so that the four push rods 253 installed at the end of the electric push rod 251 through the mounting plate 252 push the core in the mold out, thereby facilitating the removal of the product from the mold, and shrinking and resetting after detecting that the product has been removed.

[0033] The mold clamping module 20 also includes safety doors 26 located at the front and rear ends of the mold clamping assembly 21, a safety light barrier within the door frame of the safety door 26, and a safety indicator light on the safety door 26. Both the safety light barrier and the safety indicator light are electrically connected to the controller 40. In this embodiment, the safety door 26 must be closed when the slide 50 is sliding or when the mold clamping operation is in progress. A beam barrier is installed on the frame of the safety door 26 to form a sealed area, preventing human hands from entering the dangerous area. Furthermore, the safety indicator light further indicates the operating status and safety of the injection molding machine.

[0034] Furthermore, the glue injection module 30 includes a glue injection drive assembly 33 that drives a barrel 32 to inject glue via a mixing assembly 31, an electronic glue injection scale 34, a pressure sensor, and a rotary encoder, all mounted on the glue injection drive assembly 33 and electrically connected to a controller 40. The pressure sensor is embedded within the barrel. The controller 40 controls the accuracy of glue injection from the barrel 32 based on the obtained glue injection execution parameters, the position of the barrel 32 as measured by the electronic glue injection scale 34, and the power value of the glue injection drive assembly 33 as measured by the rotary encoder. The controller 40 also adjusts the speed of the servo motor based on the difference between the pressure value measured by the pressure sensor and the target value to achieve stable pressure injection pressure.

[0035] Specifically, the mixing assembly 31 includes a dynamic screw 311, a screw transmission mechanism 312, and a rotation mechanism 313. The glue outlet of the dynamic screw 311 is connected to the glue inlet of the barrel 32. The dynamic screw 311 is mounted on a screw bracket. The dynamic screw 311 is connected to the rotation mechanism 313 via the screw transmission mechanism 312. When rotating, the rotation mechanism 313 transmits the rotational power to the core of the dynamic screw 311 through the transmission mechanism, causing the core of the dynamic screw 311 to stir the raw materials. The glue outlet of the dynamic screw 311 is connected to the glue inlet of the barrel 32. Its function is to evenly mix the raw materials and then transport them to the interior of the barrel 32, allowing the barrel 32 to repeatedly inject the raw materials into the mold for molding. The dynamic screw 311 is connected to the rotation mechanism 313 via the screw transmission mechanism 312. The rotation mechanism 313 can be a device that can output rotational power through an electric motor or a motor. As the rotation mechanism 313 rotates, it transmits the rotational power to the core of the dynamic screw 311 through the transmission mechanism, enabling the core of the dynamic screw 311 to generate rotational power, thereby achieving the function of rotating and stirring the raw materials. A raw material input control valve is designed at the tail of the dynamic screw 311 to control the input of raw materials into the dynamic mixing tube for stirring and mixing.

[0036] Specifically, the glue injection drive assembly 33 includes a shooting seat cylinder 331 installed on the upper template 211, a push plate 332 provided at the output end of the shooting seat cylinder 331, and a linear moving part 333 provided on the top of the push plate 332. The linear moving part 333 is composed of a screw and a servo motor. The servo motor drives the screw to rotate by rotating, thereby generating power acting on the push plate to move linearly, so as to generate an injection thrust for the injection effect on the barrel.

[0037] Among them, the shooting seat cylinder 331 is installed on the upper template 211 of the injection molding machine, and a push plate 332 is installed on the actuator shaft of the cylinder. The shooting seat cylinder 331 drives the push plate 332 to move up and down when the cylinder shaft is extended or retracted, thereby driving the barrel 32 to move up and down to realize the function of the barrel 32 hitting the mold or leaving the mold; a barrel mounting seat is installed below the push plate 332, which is used for installing the barrel 32, and the function of the barrel 32 is to inject raw materials into the mold; a linear moving mechanism is installed above the push plate 332, which can be a screw rod or other mechanism that can move linearly. The linear movement mechanism is connected to the servo motor through a screw rod. The servo motor drives the screw rod to rotate by rotating, thereby generating power acting on the push plate to move linearly, so as to generate injection thrust for the barrel. The power of linear movement pushes the push rod of the barrel 32 through up and down movement, so that the barrel 32 can realize the function of injecting rubber. There is a rotary encoder on the servo motor. The number of revolutions and angles of the motor can be calculated through the feedback value of the rotary encoder, so that the distance moved by the barrel push rod can be accurately known, thereby realizing precise control of the injection of rubber.

[0038] Furthermore, the controller 40 is mounted on the frame 10 via a mounting cantilever, and the controller 40 is rotatably connected to the mounting cantilever. The mounting cantilever includes a rod body, a cross arm mounted on the rod body, and a bracket mounted at the end of the cross arm, which is connected to the controller via a universal joint. The controller 40 controls the accuracy of the glue injection by the barrel 32 based on the obtained glue injection execution parameters, the position of the barrel 32 obtained by the glue injection electronic ruler 34, and the power value of the glue injection drive assembly 33 obtained by the rotary encoder. The glue injection pressure of the barrel 32 is adjusted based on the difference between the pressure value obtained by the pressure sensor and the target value. The controller 40 also adjusts the driving force of the mold clamping drive assembly 22 based on the pressure and speed parameters of the mold clamping action, and adjusts the driving speed of the mold clamping drive assembly 22 based on the position information of the mold plate fed back by the mold opening and closing electronic ruler 23.

[0039] It can be understood that, among the multiple actions of the injection molding machine in the present invention, the glue injection and glue injection reset actions are realized by directly driving the lead screw to extend and retract using a servo motor. When the servo motor performs glue injection, the program first obtains the injection execution parameters from the controller's human-machine interface. These parameters are converted into motor execution commands and sent to the motor driver. Based on the execution commands, the motor driver outputs the motor speed and execution purpose, instructing the motor to execute the action, pushing the screw forward and performing the glue injection. During the glue injection process, the pressure sensor feeds back the actual injection pressure to the controller. The controller compares the difference between the set value and the actual value, adjusts the control parameters in real time, and transmits them to the motor driver, which adjusts the motor speed to achieve the set injection pressure. When the mold is closed, the controller first transmits the mold closing pressure and speed parameters to the motor driving the oil pump. The motor's rotation drives the oil pump to output hydraulic power at the set pressure and speed. Simultaneously, it outputs a signal to open the mold closing valve, allowing hydraulic pressure to enter the mold closing cylinder to drive the mold closing action. During the mold closing process, the movement of the mold plate pulls the electronic ruler, feedbacking the mold plate position information to the controller. The controller outputs different control parameters based on the movement of the electronic ruler to achieve speed control at different positions.

[0040] It should also be noted that the liquid silicone injection molding machine can realize semi-automatic or fully automatic glue injection work, wherein the semi-automatic glue injection work requires manual pressing of the start button after starting and completing an automatic cycle to restart the next automatic process, while the fully automatic work automatically restarts the next automatic process after waiting for the cycle interval time after an automatic cycle is completed, without the need for manual participation. When the glue injection machine adopts double slides for glue injection, the user presses the start button, the glue injection module resets, the feeder resets and feeds by pumping glue, the ejector mechanism retreats, the slide slides into the mold area, the core enters, triggering the mold vacuum, heating the mold core, the glue injection module injects glue, and after vulcanization, the mold is opened for air blowing, and ejected through the ejector mechanism after counting. It can be understood that when performing semi-automatic or fully automatic glue injection work, it is also possible not to use a slide.

[0041] The present invention provides a liquid silicone injection molding machine, comprising a frame, a mold clamping module arranged on the top of the frame, a glue injection module installed on the mold clamping module, and a controller for controlling the mold clamping module to perform mold clamping and glue injection. When the liquid silicone injection molding machine performs a mold clamping action, the glue injection module resets, injects material into a mixing component in the glue injection module, a mold ejection mechanism completes mold ejection, and heats a mold core on the mold ejection mechanism. A glue injection drive assembly in the glue injection module injects glue into a barrel for vulcanization, and the mold is opened after the glue is injected and vulcanized. An electronic ruler for opening and closing the mold is designed to facilitate adjustment of the driving speed of the mold clamping drive assembly. The accuracy of glue injection in the barrel is controlled based on acquired glue injection execution parameters, the position of the barrel acquired by the glue injection electronic ruler, and the power value of the glue injection drive assembly acquired by a rotary encoder. The glue injection pressure of the barrel is adjusted based on the difference between the pressure value acquired by the pressure sensor and the target value, thereby further improving the accuracy and reliability of glue injection. The present invention solves the problem of low injection precision of existing liquid silicone injection molding machines, thereby improving user satisfaction with injection experience and meeting practical application needs.

[0042] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0043] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A liquid silicone injection molding machine, characterized in that: The invention comprises a frame, a mold clamping module arranged on the top of the frame, a glue injection module installed on the mold clamping module, and a controller for controlling the mold clamping module to clamp the mold and controlling the glue injection module to inject glue. The mold clamping module comprises a mold clamping component, a mold clamping drive component for driving the mold clamping component to clamp the mold, a positioning component for positioning the mold clamping component, and a mold ejection mechanism for ejecting the product produced by the mold clamping component. The glue injection module comprises a barrel, a glue injection drive component, a mixing component, a glue injection electronic ruler, a pressure sensor, and a rotary encoder. The controller controls the accuracy of glue injection by the barrel according to the acquired glue injection execution parameters, the barrel position acquired by the glue injection electronic ruler, and the power value of the glue injection drive component acquired by the rotary encoder. The mold clamping assembly includes an upper mold plate and a lower mold plate connected to the middle mold plate through a Green column, and the upper mold plate, the middle mold plate and the lower mold plate all slide along the axial direction of the Green column; The middle template is also provided with a slide that slides left and right. The positioning assembly includes a latch mechanism and a latch. One end of the latch mechanism is fixedly connected to the lower template, and the other end cooperates with the latch hole on the slide through the latch. The latch mechanism is an electric telescopic rod or a hydraulic push rod electrically connected to the controller. The latch mechanism or the slide is provided with a corresponding displacement sensor connected to the controller. The displacement sensor determines the relative displacement of the slide and the latch mechanism and limits the position according to the displacement difference. There are two ejector mechanisms, which are respectively arranged at the bottom of both ends of the slide. One end of the ejector mechanism is fixedly connected to the frame, and the other end can move toward or away from the slide. The ejector mechanism includes an electric push rod and a push rod fixedly connected to the output end of the electric push rod through a mounting plate, and the number of the push rods is 4 and distributed in a rectangular shape; The electric push rod is electrically connected to the controller, and when the product is formed, the electric push rod is extended through PWM control; The glue injection drive assembly includes a shooting seat oil cylinder installed on the upper template and a push plate provided at the output end of the shooting seat oil cylinder. The cannon barrel is installed below the push plate, and the cannon barrel is used to inject the glue into the mold installed in the mold clamping assembly. A linear moving part is installed above the push plate, and the linear moving part consists of a screw and a servo motor. The servo motor drives the screw to rotate by rotating, thereby generating a linear moving power acting on the push plate, so as to generate an injection thrust for the cannon barrel to generate an injection effect. The pressure sensor is installed in the barrel to detect the injection pressure. The pressure sensor is connected to the controller to feed back the measured pressure value to the controller. The controller adjusts the speed of the servo motor according to the difference between the fed-back pressure value and the target value to achieve stable pressure output.

2. The liquid silicone injection molding machine according to claim 1, characterized in that: The mold closing drive assembly includes a mold opening and closing cylinder and a high-pressure cylinder arranged between the lower mold plate and the middle mold plate. The output shaft of the mold opening and closing cylinder extends or retracts to pull the lower mold plate to perform up and down movements. After the mold is closed, the high-pressure cylinder outputs a downward thrust to the lower mold plate to clamp the mold.

3. The liquid silicone injection molding machine according to claim 1, characterized in that: The mixing assembly includes a dynamic screw, a screw transmission mechanism and a rotating mechanism. The glue outlet of the dynamic screw is connected to the glue inlet of the barrel. The dynamic screw is installed on the screw bracket and is connected to the rotating mechanism through the screw transmission mechanism. When the rotating mechanism rotates, the rotational power is transmitted to the core of the dynamic screw through the transmission mechanism, so that the core of the dynamic screw stirs the raw materials.

4. The liquid silicone injection molding machine according to claim 1, characterized in that: The mold clamping module also includes an electronic ruler for opening and closing the mold, which is arranged on the mold clamping assembly and connected to the controller. The controller is installed on the frame through a mounting cantilever, and the controller is rotatably connected to the mounting cantilever.

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