A composite material forming hydraulic machine with intelligent multi-point material pushing function

Abstract

The present application belongs to the technical field of material forming equipment, and specifically discloses a composite material forming hydraulic machine with intelligent multi-point ejection function, comprising a rack, a mold pressing forming mechanism and a multi-point ejection mechanism. The mold pressing forming mechanism comprises a pressure applying platform for mounting an upper mold and longitudinally movable, and a lower mold base for mounting a lower mold; the multi-point ejection mechanism comprises a longitudinally movable ejection movement platform and a plurality of vertically arranged ejector rods; the bottom of the ejector rod is detachably mounted on the ejection movement platform, and the top is slidably inserted into the lower mold base. When the ejection movement platform is driven to move longitudinally, the ejector rod penetrates through the lower mold base to complete the ejection demolding of the composite material product. The present application integrates the ejection function in the hydraulic machine, breaks away from the dependence on the ejection structure inside the mold, reduces the cost of the mold, and can flexibly configure the ejector rod according to the shape of the product, thereby improving the versatility.

Description

Technical Field

[0001] This invention belongs to the field of material forming equipment technology, and in particular relates to a composite material forming hydraulic press with intelligent multi-point ejection function. Background Technology

[0002] Composite material compression molding plays a crucial role in lightweight manufacturing and is widely used in the production of high-performance components for automobiles, aerospace, and other industries. In this process, the product needs to be demolded after molding, a step that significantly impacts product quality and production efficiency.

[0003] Currently, there are two main types of ejection technologies: The first is integrating the ejection mechanism within the mold structure, such as using an electric screw or a purely mechanical structure to eject the product. This approach complicates the overall mold structure and significantly increases processing and maintenance costs. Especially in multi-variety, small-batch production scenarios, each product requires a dedicated mold and its ejection device, leading to a multiple increase in mold demand and cost, making it difficult to adapt to flexible production needs. The second approach uses an external ejection device independent of the forming hydraulic press. While this device has some versatility, as an additional unit, it needs to be connected to the hydraulic press table, increasing the difficulty of designing the hydraulic press's opening structure and raising overall costs. Furthermore, external devices contain numerous non-standard components, resulting in high structural complexity, insufficient operational stability, and a higher risk of failure, making it difficult to meet long-term reliable production requirements.

[0004] Existing technologies include those that use motor-driven threaded rods for ejection, which improve demolding efficiency but result in complex mold structures and high manufacturing costs; those that use purely mechanical ejection mechanisms, while reducing some costs, still cannot solve the problems of complex mold structures and poor adaptability to various product types; and those that use independent intelligent ejection devices, which introduce sensor monitoring functions, suffer from limited table openings and weakened structural stability due to their separate design from the hydraulic press, and also increase system integration costs. The main drawbacks of these technologies are: built-in ejection solutions are costly and lack versatility, while external ejection devices compromise the structural integrity of the hydraulic press and introduce reliability risks.

[0005] As composite material products become increasingly thinner and more precise, especially in demanding fields such as aerospace and energy storage batteries, the requirements for ejector positioning accuracy, pressure control, and multi-point coordination during the demolding process are constantly rising. Current technologies lack an integrated ejector solution that can be directly embedded into the hydraulic press body, while also ensuring structural rigidity and stability, multi-variety compatibility, and intelligent precision control. This technological gap severely restricts the realization of efficient and low-cost production of composite materials.

[0006] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0007] The purpose of this invention is to provide a composite material molding hydraulic press with intelligent multi-point ejection function. In the prior art, the demolding mechanism leads to high mold costs, or the independent ejection device has poor compatibility with the press and insufficient structural stability. The invention aims to reduce mold costs, improve the stability of the ejection process, and enhance the level of intelligent control.

[0008] To achieve the above objectives, the technical solution of the present invention is as follows: a composite material molding hydraulic press with intelligent multi-point ejection function, comprising a frame, on which a compression molding mechanism and a multi-point ejection mechanism are mounted; the compression molding mechanism includes a pressure platform for mounting an upper mold, the frame has a lower mold base for mounting a lower mold, the pressure platform is mounted on the frame in a controllable longitudinally movable manner, and the pressure platform is positioned above the lower mold base to drive and press the upper mold; the multi-point ejection mechanism includes an ejection motion platform and multiple vertically arranged ejector rods, the ejection motion platform is mounted on the frame and located below the lower mold base, and the multiple ejector rods are respectively detachably mounted on the ejection motion platform at their bottoms; the top of any ejector rod is slidably inserted into the lower mold base; the ejection motion platform is drivable to move longitudinally, and the ejector rods follow to pass through the lower mold base to achieve ejection and demolding of the composite material product.

[0009] Furthermore, the plurality of push rods includes at least one intermediate push rod disposed in the central region of the material lifting platform, and a plurality of peripheral push rods distributed around the intermediate push rod in the peripheral region of the platform body.

[0010] Furthermore, it also includes a drive unit and a hydraulic control system. The drive unit includes a top-loading cylinder, which is mounted on the frame and connected to the bottom surface of the top-loading motion platform to drive the longitudinal movement of the top-loading motion platform. The hydraulic control system includes a hydraulic controller, which is mounted on the frame and connected to the top-loading cylinder to control the operation of the top-loading cylinder.

[0011] Furthermore, it also includes a position detection component, which includes a displacement sensor fixed on the frame and a sensor functional support connected to and moving with the top material platform component. The displacement sensor is used to detect the displacement data of the sensor functional support to monitor the displacement of the top material moving platform. The controller receives the displacement data detected by the displacement sensor and controls the movement of the top material moving platform according to the received displacement data.

[0012] Furthermore, the multi-point feeding mechanism also includes a guide assembly and a gap adjustment assembly. The guide assembly includes a first guide rail installed on the periphery of the feeding platform assembly and a second guide rail installed on the inner wall of the frame and slidingly engaged with the first guide rail.

[0013] The clearance adjustment assembly includes a positioning pin, an adjusting bolt, and a locking screw. The second guide rail has a positioning pin hole on its side facing the frame for insertion with the positioning pin, and a locking screw hole for threaded engagement with the locking screw. The frame has an adjusting screw hole. The adjusting bolt passes through the adjusting screw hole and threadedly engages with the frame and rests against the second guide rail. The adjusting bolt can be controlled to move axially to adjust the lateral clearance between the second guide rail and the frame. The positioning pin passes through the frame and is inserted into the positioning pin hole to position the second guide rail. The locking screw passes through the frame and threadedly engages with the locking screw hole to lock and fix the second guide rail to the frame.

[0014] Furthermore, the drive unit also includes a main pressure cylinder, which is mounted on the upper part of the frame and connected to the pressure platform to drive the movement of the pressure platform; the controller is also used to control the movement of the main pressure cylinder.

[0015] Furthermore, the position detection component also includes an upper limit position sensor and a lower limit position sensor installed sequentially from top to bottom on the frame to limit the movement range of the top material movement platform.

[0016] Furthermore, the frame is also equipped with a lower limit buffer block, which is located below the top material movement platform to avoid the risk of the top material movement platform going too far downward.

[0017] Furthermore, the hydraulic control system also includes hydraulic oil lines and pressure sensors. The top-loading cylinder is a low-speed cylinder. The hydraulic controller is connected to the top-loading cylinder through the hydraulic oil lines. The pressure sensor is installed on the top-loading cylinder to detect the pressure data of the hydraulic oil in the top-loading cylinder. The hydraulic controller receives the pressure data detected by the pressure sensor and controls the pressure of the hydraulic oil entering the top-loading cylinder according to the pressure data, so as to realize the control of the ejection pressure of the top-loading cylinder.

[0018] The beneficial effects of this technical solution are as follows:

[0019] This invention relates to a composite material molding hydraulic press with intelligent multi-point ejection function. By integrating the multi-point ejection mechanism inside the frame of the molding hydraulic press and placing it below the lower mold base, the ejection function is no longer dependent on the mold structure. The mold itself no longer needs to be designed with a complex internal ejection mechanism, thus significantly reducing the design, processing, and maintenance costs of the mold, making it particularly suitable for multi-variety, small-batch production. The ejector rods are detachably installed on the ejection motion platform, and their position and number can be flexibly configured according to the shape and size requirements of different products, improving the versatility of the equipment. The clearance adjustment component ensures the accuracy and stability of the longitudinal movement of the ejection motion platform within the frame, and also allows for the adjustment of the guide rail clearance to compensate for processing and assembly errors, thereby ensuring long-term reliability and smooth operation. The integrated drive unit and hydraulic control system, consisting of a hydraulic controller, ejection cylinder, displacement sensor, pressure sensor, etc., achieves precise closed-loop control of the position and ejection force of the ejection motion platform. The displacement sensor, in conjunction with the sensor functional bracket, monitors the displacement of the ejection motion platform in real time; the pressure sensor monitors the pressure of the ejection cylinder; and the hydraulic controller precisely adjusts the ejection action based on these data. The low-speed hydraulic cylinder is designed to meet the process requirements of low-speed ejection of composite material products. The upper and lower limit position sensors, along with the lower limit buffer block, work together to effectively prevent overtravel risks and improve equipment safety. These intelligent control methods collectively achieve high precision and controllability in the ejection process, helping to ensure the quality of the ejected products. Compared to existing technologies, this invention, through a combination of structural integration, precision guidance, and intelligent control, provides a stable, universal, and intelligent ejection and demolding solution without the need for expensive dedicated molds or complex external devices. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a composite material molding hydraulic press with intelligent multi-point ejection function according to the present invention;

[0021] Figure 2 This is a schematic diagram of the multi-point feeding mechanism of the present invention;

[0022] Figure 3 This is a schematic diagram of the assembly structure of the guide component and the gap adjustment component of the present invention;

[0023] Figure 4 This is a schematic diagram of the top rod position distribution according to the present invention;

[0024] Figure 5 This is a schematic diagram of the position detection component structure of the present invention. Detailed Implementation

[0025] The following detailed description illustrates the specific implementation method:

[0026] The reference numerals in the accompanying drawings include: hydraulic controller 10, main pressure cylinder 20, pressure platform 30, lower mold base 40, upper mold 41, composite material product 42, lower mold 43, T-slot 44, multi-point ejection mechanism 50, intermediate ejector rod 51, peripheral ejector rod 52, ejection motion platform 53, lower limit buffer block 54, positioning pin 55, locking screw 56, adjusting bolt 57, first guide rail 58, second guide rail 59, frame 60, hydraulic oil pipeline 70, position detection component 80, displacement sensor 81, upper limit position sensor 82, sensor function bracket 83, lower limit position sensor 84, and ejection cylinder 90.

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] The basic implementation examples are as follows: Figure 1-5 As shown: A composite material molding hydraulic press with intelligent multi-point ejection function includes a frame 60, on which a compression molding mechanism and a multi-point ejection mechanism 50 are mounted; the compression molding mechanism includes a pressure platform 30 for mounting an upper mold 41, and the frame 60 has a lower mold base 40 for mounting a lower mold 43. The pressure platform 30 is mounted on the frame 60 in a controllable longitudinally movable manner, and is positioned above the lower mold base 40 to drive the upper mold 41. The multi-point ejection mechanism 50 includes an ejection motion platform 53 and multiple vertically arranged ejector rods. The ejection motion platform 53 is installed on the frame 60 and located below the lower mold base 40. The multiple ejector rods are detachably installed on the ejection motion platform 53 at their bottoms. The top of each ejector rod is slidably inserted into the lower mold base 40. The ejection motion platform 53 can be driven to move longitudinally, and the ejector rods follow the movement to pass through the lower mold base 40 to achieve ejection and demolding of the composite material product 42.

[0029] Specifically, the frame 60 is mainly used to support and fix all core functional components. A compression molding mechanism and a multi-point ejection mechanism 50 are mounted on the frame 60. The compression molding mechanism is responsible for completing the compression molding process of the composite material, while the multi-point ejection mechanism 50 is specifically used for demolding the molded product. The compression molding mechanism includes a pressure platform 30 for mounting the upper mold 41. A lower mold base 40 is correspondingly provided on the frame 60. A T-slot 44 is formed on the top surface of the lower mold base 40. The lower mold 43 is mounted on the lower mold base 40 by bolts engaging with the T-slot 44. The pressure platform 30 can be manipulated to move longitudinally, and its movement can be achieved through mechanical transmission, pneumatics, or a simple hydraulic cylinder drive. The pressure platform 30 is positioned above the lower mold base 40, and its movement applies pressure to the upper mold 41, thereby completing the compression molding of the composite material. The multi-point ejection mechanism 50 consists of an ejection motion platform 53 and multiple vertically arranged ejector rods. The ejection motion platform 53 is mounted on the frame 60 and positioned below the lower mold base 40. The ejection motion platform 53 can be installed using sliding bearings with guide pillars, or rollers with rails. The bottoms of the multiple ejector rods are detachably mounted to the ejection motion platform 53. This detachable mounting method can be achieved through threaded connections, pin fixation, or quick-release clips, allowing for flexible adjustment of the number and position of the ejector rods according to the demolding requirements of different products. The tops of the ejector rods are designed to slide into the lower mold base 40, ensuring smooth passage through the lower mold base 40 during movement to eject the product. To ensure smooth ejection, the lower mold base 40 also has multiple longitudinally penetrating through holes. The specific arrangement can be determined based on the ejection holes of the lower mold 43 to select the number and installation position of the ejector rods. The longitudinal movement of the ejector platform 53 can be achieved by a motor driving a lead screw, cylinder, or hydraulic cylinder. When the ejector platform 53 is driven upward, the ejector rod installed on it moves upward accordingly, passing through the lower mold base 40 and the lower mold 43 in sequence, thereby achieving the ejection and demolding of the composite material product 42. Therefore, the composite material molding hydraulic press with intelligent multi-point ejection function involved in this embodiment effectively avoids the problems of complex mold structure, high manufacturing cost, and unsuitability for multi-variety, small-batch production caused by traditional internal ejection mechanisms by directly integrating the multi-point ejection mechanism 50 inside the hydraulic press. At the same time, this integrated design also avoids the disadvantages of independent external ejection devices, such as complex structure, poor stability, and difficulty in docking with the hydraulic press. It achieves demolding of composite material products 42 with stable structure, strong versatility, and easy intelligent and precise control, significantly improving production efficiency and product quality. A single platform can achieve ejection for multi-variety, small-batch composite material product production, eliminating the need for each mold to have an ejector structure, thus significantly reducing mold costs.

[0030] In this embodiment, the multiple ejector rods include at least one intermediate ejector rod 51 disposed in the central region of the ejector motion platform, and multiple peripheral ejector rods 52 distributed around the intermediate ejector rod 51 in the peripheral region of the motion platform body. Specifically, the intermediate ejector rod 51 is an ejector rod installed in the central region of the ejector motion platform 53, and its main function is to provide ejection support force for the central region of the composite material product 42. In practical applications, the intermediate ejector rod 51 is compatible with most composite material products 42 with small length and width dimensions, and ejection can be completed using only the intermediate ejector rod 51; at the same time, in many composite material products 42, the central region is often a part where the force is concentrated or the structure is more critical, so a stable and concentrated ejection force is required. The setting of the intermediate ejector rod 51 can ensure that this critical region receives effective and uniform support during demolding, avoiding local deformation or damage caused by uneven force. The peripheral ejector rods 52 refer to the ejector rods distributed around the intermediate ejector rod 51 in the peripheral region of the ejector motion platform 53 body. The main function of these peripheral ejector pins 52 is to provide auxiliary ejection force for the edges, corners, or irregularly shaped areas of the composite material product 42. The cooperation of multiple peripheral ejector pins 52 with the central ejector pin 51 allows for the selective use of each ejector pin when producing various types of composite material products, thereby achieving universal ejection and reducing mold design difficulty and mold costs. Due to the diverse shapes of the composite material product 42, and for products with large volumes or significant lengths or widths, the demolding resistance in the edge areas may be high or unevenly distributed. The flexible arrangement of the peripheral ejector pins 52 can better adapt to the demolding requirements of different products, ensuring smooth overall demolding and preventing edge damage or adhesion. The number and specific arrangement of the peripheral ejector pins 52 can be optimized according to the geometry, size, and demolding resistance distribution of the product to be demolded. For example, they can be arranged in a ring, rectangle, or non-uniformly distributed according to the product contour to achieve the best demolding effect. Thus, by dividing multiple ejector pins into intermediate ejector pins 51 and peripheral ejector pins 52, and respectively setting them in the central and peripheral areas of the motion platform body, a refined and regionalized distribution of ejection force is achieved. The intermediate ejector pins 51 can concentrate their force on the core stress area of ​​the product, providing stable central support, while the peripheral ejector pins 52 can flexibly cover the edges and complex contour areas of the product, effectively addressing localized demolding resistance. This regionalized, synergistic ejector pin arrangement makes the force distribution during demolding more uniform and reasonable, significantly reducing the risk of deformation, cracking, or localized damage to the product during demolding. Simultaneously, it improves the thoroughness and efficiency of demolding, especially suitable for composite material products 42 with complex shapes and large differences in demolding resistance across different areas, thereby effectively improving product quality and production yield.

[0031] This embodiment also includes a drive unit and a hydraulic control system. The drive unit includes an ejector cylinder 90, which is mounted on the frame 60 and connected to the bottom surface of the ejector motion platform 53 to drive the longitudinal movement of the ejector motion platform 53. The hydraulic control system includes a hydraulic controller 10, which is mounted on the frame 60 and connected to the ejector cylinder 90 to control the operation of the ejector cylinder 90. Specifically, the ejector cylinder 90 is a mechanism that provides driving force to the ejector motion platform 53, enabling it to move longitudinally. The ejector cylinder 90 is a hydraulic actuator that drives the piston rod to extend and retract through the pressure of hydraulic oil, thereby generating thrust or pull force to achieve mechanical movement. The ejector cylinder 90 is mounted on the frame 60 and connected to the bottom surface of the ejector motion platform 53. Through the extension and retraction of the piston rod, it directly or indirectly drives the ejector motion platform 53 to move longitudinally, thereby realizing the ejection and demolding operation of the composite material product 42. The hydraulic control system is a system used to manage and adjust the working state of the drive unit (such as the ejector cylinder 90). The hydraulic control system includes a hydraulic controller 10, which receives operating commands, processes relevant data, and outputs control signals to adjust the working state of the hydraulic components. The hydraulic controller 10 is mounted on the frame 60 and connected to the top-loading cylinder 90. By precisely controlling the flow and pressure of the hydraulic oil, it controls the extension and retraction speed, stroke, and force of the top-loading cylinder 90, thereby achieving precise control of its operation. As a functional component of the hydraulic system, the hydraulic controller 10 can be selected and adjusted by those skilled in the art according to actual conditions. For example, it can be used to control the opening of valves such as flow valves and servo hydraulic control valves via a PLC microcontroller to achieve hydraulic regulation and cylinder operation control. As a preferred embodiment, the hydraulic controller 10 adopts a PLC-based closed-loop control system; its control logic includes displacement closed-loop control and pressure closed-loop control. During the ejection stage, the controller reads the real-time position value of the displacement sensor 81, compares it with the preset ejection stroke curve, calculates the control quantity using a PID algorithm, and outputs an analog signal (e.g., ±10V) to the electro-hydraulic proportional servo valve controlling the ejector cylinder 90 to adjust the valve opening, thereby precisely controlling the ejection speed and position. During the pressure holding stage, the controller switches to pressure control mode, reads the real-time pressure value of the pressure sensor, compares it with the preset target ejection force (e.g., adjustable from 5-20 tons), and again adjusts the servo valve using a PID algorithm to maintain stable pressure within the cylinder. The preset displacement curve and pressure target value can be set and stored through the controller's human-machine interface; more specific control logic and processes are applications of existing technology and will not be elaborated here. Thus, this embodiment, by introducing a drive unit and a hydraulic control system, provides a stable and reliable power source and precise control means for the ejector motion platform 53. The ejector cylinder 90, as the core of the drive unit, can directly drive the ejector motion platform 53 to move longitudinally, realizing the ejection and demolding of the composite material product 42.Meanwhile, the hydraulic controller 10 can perform real-time and precise control of the operation of the ejector cylinder 90, including its moving speed, stroke and force, thereby ensuring that the ejector motion platform 53 moves smoothly and is accurately positioned during the ejection process, effectively avoiding problems such as jamming and damage that may occur during the demolding process, and significantly improving demolding efficiency and product quality.

[0032] In this embodiment, a position detection component 80 is also included. The position detection component 80 includes a displacement sensor 81 fixed to the frame 60 and a sensor functional support 83 connected to and moving with the top material platform component. The displacement sensor 81 detects the displacement data of the sensor functional support 83 to monitor the displacement of the top material moving platform 53. The controller receives the displacement data detected by the displacement sensor 81 and controls the movement of the top material moving platform 53 based on the received displacement data. Specifically, the position detection component 80 is used to acquire the precise position information of the top material moving platform 53 in real time during longitudinal movement. Its core working principle is to convert the mechanical displacement of the top material moving platform 53 into an electrical or digital signal that can be processed by the controller, thereby providing a data basis for subsequent precise control. More specifically, the position detection component 80 consists of a displacement sensor 81 fixed to the frame 60 and a sensor functional support 83 connected to and moving with the top material moving platform 53. The displacement sensor 81 performs position detection. The displacement sensor 81 can be a non-contact sensor such as a grating ruler sensor, a magnetostrictive displacement sensor, an eddy current sensor, or a laser displacement sensor. The displacement sensor 81 is fixedly mounted on the frame 60 to ensure the stability of its measurement reference. The sensor functional bracket 83, as a cooperating component of the displacement sensor 81, is firmly connected to the top material platform assembly and moves synchronously with the top material motion platform 53. The displacement sensor 81 indirectly monitors the displacement of the top material motion platform 53 by detecting the displacement data of the sensor functional bracket 83. The controller in the hydraulic control system, such as a programmable logic controller (PLC) or an industrial computer, is configured to receive real-time displacement data from the displacement sensor 81. The controller compares the received actual displacement data with the target value according to a preset ejection stroke, speed curve, or target position, generating an error signal. Based on this error signal, the controller precisely controls the flow and pressure of hydraulic oil entering the top material cylinder 90 by adjusting the proportional valve or servo valve in the hydraulic control system. This achieves precise control over the extension and retraction of the piston rod of the top material cylinder 90, thereby driving the top material movement platform 53 to move and stop according to the preset trajectory and target position. The specific implementation of the control logic is an application of existing technology and will not be elaborated here. Thus, by introducing the position detection component 80, real-time and precise monitoring of the displacement of the top material movement platform 53 is achieved. The hydraulic controller 10 can receive and process this displacement data, thereby forming a closed-loop control system. On this basis, the controller no longer only controls the working state of the top material cylinder 90, but can also dynamically adjust the action of the top material cylinder 90 according to the actual position feedback of the top material movement platform 53, ensuring that the top material movement platform 53 can move precisely to the preset ejection position and stop stably.This significantly improves the accuracy and repeatability of ejection and demolding of composite material products 42, effectively avoiding product damage or incomplete demolding caused by inaccurate stroke, while also avoiding the risk of overtravel operation of the ejector motion platform 53, thereby improving the intelligence level and production efficiency of the entire composite material molding hydraulic press.

[0033] In this embodiment, the multi-point ejection mechanism 50 further includes a guide assembly and a gap adjustment assembly. The guide assembly includes a first guide rail 58 installed on the periphery of the ejection platform assembly, and a second guide rail 59 installed on the inner wall of the frame 60 and slidingly engaged with the first guide rail 58. The gap adjustment assembly includes a positioning pin 55, an adjusting bolt 57, and a locking screw 56. The second guide rail 59 has a positioning pin hole on the wall facing the frame 60 for inserting and engaging with the positioning pin 55, and a locking screw 56 for threaded engagement with the locking screw 56. The frame 60 has an adjusting screw hole. The adjusting bolt 57 passes through the adjusting screw hole and is threaded into the frame 60 and abuts against the second guide rail 59. The adjusting bolt 57 can be controlled to move along its own axis to adjust the size of the lateral clearance between the second guide rail 59 and the frame 60. The positioning pin 55 passes through the frame 60 and is inserted into the positioning pin hole to position the second guide rail 59. The locking screw 56 passes through the frame 60 and is threaded into the locking screw hole to lock and fix the second guide rail 59 to the frame 60.

[0034] Specifically, the first guide rail 58 is installed on the periphery of the top-loading platform assembly, while the second guide rail 59 is installed on the inner wall of the frame 60, forming a sliding fit with the first guide rail 58. The clearance adjustment assembly is used to adjust the lateral clearance of the guide assembly, thereby compensating for assembly tolerances and fine-tuning the lateral position of the top-loading motion platform 53. The positioning pin 55 provides an initial positioning for the second guide rail 59. When the second guide rail 59 is installed on the frame 60, the positioning pin 55 passes through the frame 60 and is inserted into the positioning pin hole on the second guide rail 59, thus assisting in the initial positioning of the second guide rail 59 and reducing the difficulty of subsequent adjustments. The adjusting bolt 57 passes through the frame 60 through a pre-set adjusting screw hole in a threaded manner, with its end abutting against the second guide rail 59. By rotating the adjusting bolt 57, it can be moved along its own axial direction, thereby applying a lateral thrust to the second guide rail 59 to precisely adjust the lateral clearance between the second guide rail 59 and the frame 60, thereby eliminating machining and assembly errors and ensuring the reliability of the guide. This adjustment mechanism allows for compensation of manufacturing tolerances during assembly and recalibration after wear occurs due to long-term equipment operation. The locking screw 56 passes through the frame 60 and is threaded into the locking screw hole on the second guide rail 59. By tightening the locking screw 56, the second guide rail 59 is securely fixed to the frame 60, preventing positional displacement due to vibration or stress during operation, thus ensuring the adjusted clearance is maintained long-term. Thus, by introducing the guide assembly, the ejector platform 53 obtains stable guiding support during longitudinal movement, effectively preventing swaying or skew during operation. Simultaneously, the clearance adjustment assembly allows for precise adjustment and locking of the lateral clearance between the second guide rail 59 and the frame 60. This not only compensates for tolerances generated during manufacturing and assembly but also allows for readjustment when wear occurs during long-term equipment operation, ensuring the ejector platform 53 always maintains optimal operating accuracy and stability. This adjustable guiding and fixing method significantly improves the overall operational reliability and ejection / demolding accuracy of the multi-point ejector mechanism 50, extends the equipment's service life, and reduces maintenance costs.

[0035] In this embodiment, the drive unit also includes a main pressure cylinder 20, which is mounted on the upper part of the frame 60 and connected to the pressure platform 30 to drive the movement of the pressure platform 30. The controller is also used to control the action of the main pressure cylinder 20. Specifically, the main pressure cylinder 20 is used to provide a strong pushing and pulling force to the pressure platform 30. The main pressure cylinder 20 is mounted on the upper part of the frame 60, and the piston rod end of the main pressure cylinder 20 is rigidly connected to the pressure platform 30, for example, through threaded connection, pin connection, or flange connection, to ensure that the driving force of the cylinder can be efficiently and accurately transmitted to the pressure platform 30, thereby driving the upper mold 41 to perform precise pressing, pressure holding, and mold opening actions. In addition to controlling the operation of the ejector cylinder 90, the hydraulic controller 10 is also used to control the action of the main pressure cylinder 20. The hydraulic controller 10 receives instructions from the operating interface or preset program and combines them with feedback signals from pressure sensors, displacement sensors 81, etc., to output precise control signals to the hydraulic valve group. Based on these control signals, the hydraulic valve assembly adjusts the flow direction, flow rate, and pressure of the hydraulic oil entering the main pressure cylinder 20, thereby achieving precise control over the extension and retraction speed, stroke, and thrust of the piston rod of the main pressure cylinder 20. Thus, by integrating the main pressure cylinder 20 into the drive unit and managing it uniformly under the hydraulic controller 10, precise and efficient driving of the pressure platform 30 in the molding mechanism is achieved. This allows the pressure platform 30 to move precisely up and down and apply force according to preset process parameters, such as pressing speed, molding pressure, and holding time.

[0036] In this embodiment, the position detection component 80 further includes an upper limit position sensor 82 and a lower limit position sensor 84, which are installed sequentially from top to bottom on the frame 60 to limit the movement range of the top material movement platform 53. Specifically, the upper limit position sensor 82 is used to detect whether the top material movement platform 53 reaches or exceeds a preset upper limit position during upward movement. This sensor can be a mechanical limit switch or a proximity switch, such as an inductive, capacitive, or photoelectric proximity switch. The upper limit position sensor 82 is fixedly installed at an appropriate position on the frame 60 to ensure that it can accurately monitor the highest point of the top material movement platform 53. Similarly, the lower limit position sensor 84 is used to detect whether the top material movement platform 53 reaches or exceeds a preset lower limit position during downward movement. Its implementation is similar to that of the upper limit position sensor 82, and it can be a mechanical limit switch or various types of proximity switches. The lower limit position sensor 84 is also fixedly installed at an appropriate position on the frame 60 to accurately monitor the lowest point of the top material movement platform 53. These two limit position sensors are mounted sequentially from top to bottom on the frame 60. This mounting method ensures that they cover the entire effective stroke of the top material movement platform 53 and provide independent detection signals at the highest and lowest points of the platform, helping to clearly define the platform's safe operating area. The upper limit position sensor 82 and the lower limit position sensor 84 allow for the setting of clear physical boundaries for the top material movement platform 53. When either sensor is triggered, the controller receives the corresponding signal and immediately takes measures, such as stopping the movement of the top material cylinder 90, reversing the drive of the top material cylinder 90, or issuing an alarm, thereby preventing the top material movement platform 53 from exceeding its safe operating range.

[0037] In this embodiment, the frame 60 is also equipped with a lower limit buffer block 54, which is located below the top material movement platform 53 to mitigate the risk of the top material movement platform 53 overtraveling during descent. Specifically, the lower limit buffer block 54 is a component specifically designed to absorb impact energy and provide physical restraint. The lower limit buffer block 54 is made of a material with good elasticity and energy absorption properties, such as high-strength rubber, polyurethane elastomer, or composite material, and may also be a structure containing internal springs or hydraulic damping elements. Its main function is to provide a flexible physical contact surface when the top material movement platform 53 descends to a preset limit position to absorb and dissipate the kinetic energy of the platform during descent, thereby mitigating the impact force. The lower limit buffer block 54 is strategically mounted on the frame 60, with its position corresponding to the lower surface of the top material movement platform 53 at its lowest operating point or safety limit position. With this arrangement, when the bottom material movement platform accidentally descends beyond its normal operating range, its lower surface will first contact the lower limit buffer block 54, thereby triggering the buffering mechanism. When the material feeding platform moves longitudinally under the action of the drive unit, especially during the downward movement, if there is a control failure, sensor malfunction, or hydraulic system abnormality, causing the platform to continue to move downward, the lower limit buffer block 54 will act as a mechanical limit to prevent the platform from moving further downward, thereby avoiding the risk of the material feeding platform 53 overtravel during downward movement.

[0038] In this embodiment, the hydraulic control system further includes a hydraulic oil pipeline 70 and a pressure sensor. The top material cylinder 90 is a low-speed cylinder. The hydraulic controller 10 is connected to the top material cylinder 90 through the hydraulic oil pipeline 70. The pressure sensor is installed on the top material cylinder to detect the pressure data of the hydraulic oil in the top material cylinder. The hydraulic controller 10 receives the pressure data detected by the pressure sensor and controls the pressure of the hydraulic oil entering the top material cylinder according to the pressure data, so as to realize the control of the ejection pressure of the top material cylinder.

[0039] Specifically, the hydraulic oil line 70 is used to transmit hydraulic oil between the hydraulic controller 10 and the ejector cylinder 90. It is typically composed of a high-pressure hose, rigid pipe, or composite pipe, with appropriate materials and connection methods selected based on system pressure, flow rate, and installation environment to ensure stable and sealed fluid transmission. The ejector cylinder 90 is designed as a low-speed cylinder to achieve smooth and controllable ejection, effectively avoiding impact and vibration on the composite material product 42 during demolding. Because the composite material product 42 is usually thin, ejection typically requires low or ultra-low speeds (e.g., ≤0.5mm / s) to prevent localized damage or defects such as white spots. The hydraulic controller 10 is connected to the ejector cylinder 90 via the hydraulic oil line 70 to transmit hydraulic energy and execute control commands. A pressure sensor is installed in the ejector cylinder to monitor the pressure data of the hydraulic oil inside the cylinder in real time. The pressure sensor can be a piezoresistive, piezoelectric, capacitive, or strain gauge sensor. It converts the detected pressure signal into an electrical signal and transmits it to the hydraulic controller 10 via a cable. The hydraulic controller 10 receives the pressure data detected by the pressure sensor, and its internal microprocessor or PLC collects and digitizes these electrical signals through an input interface. Based on the received real-time pressure data, the hydraulic controller 10 can precisely control the pressure of the hydraulic oil entering the ejector cylinder according to a preset ejection pressure curve or target pressure value. Furthermore, the controller compares the actual pressure with the target value and adjusts the output of the hydraulic pump or the opening of the proportional valve or servo valve accordingly, thereby changing the flow rate and pressure of the hydraulic oil to achieve closed-loop control of the ejection pressure of the ejector cylinder. Through the coordinated work of the pressure sensor, hydraulic controller 10, and servo control valve, the pipeline oil pressure is precisely controlled, thereby achieving precise control of the ejection force.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] The above descriptions are merely embodiments of the present invention. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention. These should also be considered within the scope of protection of the present invention, and will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A composite material molding hydraulic press with intelligent multi-point ejection function, characterized in that, include: A frame, wherein a molding mechanism and a multi-point ejection mechanism are mounted on the frame; The compression molding mechanism includes a pressure platform for mounting an upper mold, and the frame has a lower mold base for mounting a lower mold. The pressure platform is mounted on the frame in a controllable longitudinally movable manner, and the pressure platform is positioned above the lower mold base to drive and apply pressure to the upper mold. The multi-point ejection mechanism includes an ejection motion platform and multiple vertically arranged ejector rods. The ejection motion platform is installed on the frame and located below the lower mold base. The multiple ejector rods are detachably installed on the ejection motion platform at their bottoms. The top of each ejector rod is slidably inserted into the lower mold base. The ejection motion platform can be driven to move longitudinally, and the ejector rods follow the movement to pass through the lower mold base to achieve ejection and demolding of the composite material product.

2. The composite material molding hydraulic press with intelligent multi-point ejection function according to claim 1, characterized in that: The plurality of top rods includes at least one intermediate top rod disposed in the central region of the material lifting platform, and a plurality of peripheral top rods distributed around the intermediate top rod in the peripheral region of the platform body.

3. A composite material molding hydraulic press with intelligent multi-point ejection function according to claim 1, characterized in that: It also includes a drive unit and a hydraulic control system. The drive unit includes a top material cylinder, which is mounted on the frame and connected to the bottom surface of the top material movement platform to drive the longitudinal movement of the top material movement platform. The hydraulic control system includes a hydraulic controller, which is mounted on the frame and connected to the top material cylinder to control the operation of the top material cylinder.

4. A composite material molding hydraulic press with intelligent multi-point ejection function according to claim 3, characterized in that: It also includes a position detection component, which includes a displacement sensor fixed on the frame and a sensor functional support connected to and moving with the top material platform component. The displacement sensor is used to detect the displacement data of the sensor functional support to monitor the displacement of the top material moving platform. The controller receives the displacement data detected by the displacement sensor and controls the movement of the top material moving platform according to the received displacement data.

5. A composite material molding hydraulic press with intelligent multi-point ejection function according to claim 1, characterized in that: The multi-point feeding mechanism also includes a guide component and a gap adjustment component. The guide component includes a first guide rail installed on the periphery of the feeding platform component and a second guide rail installed on the inner side wall of the frame and slidingly engaged with the first guide rail. The clearance adjustment assembly includes a positioning pin, an adjusting bolt, and a locking screw. The second guide rail has a positioning pin hole on its side facing the frame for insertion with the positioning pin, and a locking screw hole for threaded engagement with the locking screw. The frame has an adjusting screw hole. The adjusting bolt passes through the adjusting screw hole and threadedly engages with the frame and rests against the second guide rail. The adjusting bolt can be controlled to move axially to adjust the lateral clearance between the second guide rail and the frame. The positioning pin passes through the frame and is inserted into the positioning pin hole to position the second guide rail. The locking screw passes through the frame and is threadedly connected to the locking screw hole to lock and fix the second guide rail to the frame.

6. A composite material molding hydraulic press with intelligent multi-point ejection function according to claim 3, characterized in that: The drive unit also includes a main pressure cylinder, which is mounted on the upper part of the frame and connected to the pressure application platform to drive the movement of the pressure application platform; the controller is also used to control the action of the main pressure cylinder.

7. A composite material molding hydraulic press with intelligent multi-point ejection function according to claim 4, characterized in that: The position detection component also includes an upper limit position sensor and a lower limit position sensor installed sequentially from top to bottom on the frame to limit the movement range of the top material movement platform.

8. A composite material molding hydraulic press with intelligent multi-point ejection function according to claim 1, characterized in that: The frame is also equipped with a lower limit buffer block, which is located below the top material movement platform.

9. A composite material molding hydraulic press with intelligent multi-point ejection function according to claim 3, characterized in that: The hydraulic control system also includes hydraulic oil lines and pressure sensors. The top-loading cylinder is a low-speed cylinder. The hydraulic controller is connected to the top-loading cylinder through the hydraulic oil lines. The pressure sensor is installed in the top-loading cylinder to detect the pressure data of the hydraulic oil in the top-loading cylinder. The hydraulic controller receives the pressure data detected by the pressure sensor and controls the pressure of the hydraulic oil entering the top-loading cylinder according to the pressure data, so as to control the ejection pressure of the top-loading cylinder.

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