Two-stage vacuum pressurization method

Abstract

The present application belongs to the technical field of vacuum pressurization, and particularly relates to a two-stage vacuum pressurization method, which is realized based on a two-stage vacuum pressurization mechanism. The two-stage vacuum pressurization mechanism comprises a first-stage execution assembly, a second-stage execution assembly, a first pressurization part and a second pressurization part. The method comprises: making the first pressurization part and the second pressurization part reach a predetermined relative position, and performing vacuumization on a vacuum pressurization space; driving the first pressurization part to produce a pressurization displacement in a pressurization direction on the basis of the predetermined relative position through the second-stage execution assembly; and stopping pressurization after a to-be-pressurized part meets a preset pressurization condition. The present application solves the technical problems that, in the prior art, a same driving mechanism is used to complete large-stroke position adjustment and high-pressure pressurization action of a pressurization part, so that the driving mechanism is difficult to balance the moving stroke and the pressurization force, resulting in insufficient transmission rigidity, large stress deformation, unstable pressurization position, uneven stress on the to-be-pressurized part and unstable pressurization quality.

Description

Technical Field

[0001] This invention belongs to the field of vacuum pressurization technology, and particularly relates to a two-stage vacuum pressurization method. Background Technology

[0002] Vacuum pressurization equipment is typically used to pressurize components in a vacuum environment. Existing vacuum pressurization equipment generally includes two pressurization sections arranged opposite each other. A drive mechanism drives one pressurization section to move relative to the other, bringing the two pressurization sections closer together and forming a vacuum pressurization space between them to accommodate the component to be pressurized. After evacuating the vacuum pressurization space, the component to be pressurized is then pressurized by the two pressurization sections.

[0003] However, in existing technologies, a single drive mechanism is typically used to complete both the large-stroke movement of the pressurizing section and the final pressurization action. This drive mechanism needs to both bring the two pressurizing sections closer together to complete mold closing and position adjustment, and also needs to provide significant pressure during the subsequent pressurization stage. This makes it difficult for the drive mechanism to simultaneously handle both a large stroke and a high pressure.

[0004] When the drive mechanism is set to have a long output stroke to meet the large travel distance, it is easy to have problems such as insufficient transmission rigidity, large deformation under force, and reduced control accuracy of pressurization position during the high pressure pressurization stage. When the drive mechanism increases its load-bearing capacity to meet the high pressure, it is easy to lead to an increase in the volume of the drive mechanism and the load-bearing structure, an increase in manufacturing cost, and a decrease in action response speed.

[0005] Therefore, there is an urgent need to design a two-stage vacuum pressurization method. Summary of the Invention

[0006] The purpose of this invention is to provide a two-stage vacuum pressurization method, which aims to solve the technical problems in the prior art where the same drive mechanism is used to complete the large stroke position adjustment and high pressure pressurization action of the pressurization part. This results in the drive mechanism being unable to take into account both the movement stroke and the pressure, and is prone to insufficient transmission rigidity, large deformation under force, unstable pressurization position, uneven force on the pressurized part, and unstable pressurization quality.

[0007] To achieve the above objectives, embodiments of the present invention provide a two-stage vacuum pressurization method. The method is based on a two-stage vacuum pressurization mechanism, which includes a first stage execution component, a second stage execution component, a first pressurization part, and a second pressurization part. The first stage execution component and the second stage execution component are used to drive the first pressurization part to move relative to the second pressurization part. The first stage execution component and the second stage execution component are different execution components.

[0008] The method includes:

[0009] Step S100: Drive the first pressurizing part to move through the first segment execution component, so that the first pressurizing part and the second pressurizing part reach a predetermined relative position, and put the vacuum pressurization space between the first pressurizing part and the second pressurizing part into a vacuum-evacuumable state;

[0010] Step S200: Evacuate the vacuum pressurization space;

[0011] Step S300: After the vacuum pressurization space meets the preset vacuum conditions, the first pressurization part is driven by the second stage execution component to generate a pressurization displacement along the pressurization direction based on the predetermined relative position, so as to pressurize the component to be pressurized in the vacuum pressurization space through the first pressurization part and the second pressurization part;

[0012] Step S400: After the component to be pressurized meets the preset pressurization conditions, stop the second stage execution component from continuing to drive the first pressurization part to move along the pressurization direction.

[0013] Optionally, the second stage execution component includes a second drive mechanism, a transverse wedge block, and a rising wedge block, wherein the rising wedge block engages with the wedge surface of the transverse wedge block;

[0014] In step S300, the first pressurizing part is driven by the second segment execution component to generate a pressurizing displacement along the pressurizing direction based on the predetermined relative position, including:

[0015] Step S310: Drive the transverse wedge block to move laterally via the second driving mechanism;

[0016] Step S320: By engaging the wedge surfaces of the transverse wedge block and the rising wedge block, the lateral movement of the transverse wedge block is converted into the movement of the rising wedge block along the pressure direction;

[0017] Step S330: The force is transmitted to the first pressurizing part through the rising wedge block, so that the first pressurizing part generates the pressurizing displacement along the pressurizing direction.

[0018] Optionally, before step S300, the method further includes:

[0019] Obtain the target total pressure corresponding to the component to be pressurized.

[0020] Optionally, the target applied pressure corresponding to each of the second execution components is determined according to the following formula:

[0021] ;

[0022] in, It is the target pressure corresponding to the i-th second-stage execution component. is the target total pressure corresponding to the component to be pressurized, and n is the number of the second stage execution components.

[0023] Optionally, the method further includes:

[0024] Step S030: Obtain the wedge angle between the transverse wedge block and the rising wedge block, as well as the coefficient of friction at the wedge surface mating point of the transverse wedge block and the rising wedge block;

[0025] Step S040: Determine the friction angle based on the friction coefficient;

[0026] Step S050: Determine the target lateral thrust required to drive the transverse wedge block to move laterally based on the target applied pressure, the wedge angle, and the friction angle.

[0027] Optionally, the second drive mechanism includes a lead screw drive assembly, wherein the nut seat of the lead screw drive assembly is connected to the transverse wedge block;

[0028] The method further includes:

[0029] Step S060: Obtain the lead of the lead screw drive assembly and the transmission efficiency of the lead screw drive assembly;

[0030] Step S070: Determine the target screw drive torque required to drive the screw drive assembly based on the target lateral thrust, the lead of the screw drive assembly, and the transmission efficiency of the screw drive assembly.

[0031] Optionally, the second drive mechanism further includes a reversing reduction mechanism and a second rotary drive member, wherein the output end of the second rotary drive member is drivenly connected to the input end of the reversing reduction mechanism, and the lead screw transmission assembly is drivenly connected to the output end of the reversing reduction mechanism.

[0032] The method further includes:

[0033] Step S081: Obtain the reduction ratio of the reversing deceleration mechanism and the transmission efficiency of the second drive mechanism;

[0034] Step S082: Based on the target lead screw drive torque, the reduction ratio of the reversing reduction mechanism, and the transmission efficiency of the second drive mechanism, determine the target output torque of the second rotary drive component according to the following formula:

[0035]

[0036] in, The target output torque of the second rotary drive in the i-th second segment execution component, The corresponding target lead screw drive torque, Let be the reduction ratio of the reversing deceleration mechanism. The transmission efficiency of the second drive mechanism;

[0037] Step S083: Control the second rotary drive component to drive the lead screw transmission assembly via the reversing reduction mechanism according to the target output torque, so that the lead screw transmission assembly drives the nut seat to move the transverse wedge block laterally.

[0038] Optionally, the second drive mechanism further includes an axial bearing that cooperates with the lead screw drive assembly;

[0039] Before performing step S300, a lateral bearing capacity verification step is also included, which includes:

[0040] Step S001: Determine the maximum lateral rated working load of the second stage execution component based on the target lateral thrust of the second stage execution component;

[0041] Step S002: Obtain the rated dynamic load of the lead screw drive assembly and the rated dynamic load of the axial bearing;

[0042] Step S003: Compare the rated dynamic load of the lead screw drive assembly and the rated dynamic load of the axial bearing with the maximum lateral rated working load, respectively;

[0043] Step S004: When the rated dynamic load of the lead screw drive assembly and the rated dynamic load of the axial bearing are both greater than the maximum lateral rated working load, it is determined that the lead screw drive assembly and the axial bearing meet the lateral bearing requirements of the second stage of pressurization.

[0044] Optionally, step S400 includes:

[0045] Step S410: After the component to be pressurized meets the preset pressurization conditions, stop the second stage execution component from continuing to drive the first pressurization part to move along the pressurization direction;

[0046] Step S420: Control the second stage execution component to maintain the current pressurization position so that the first pressurization part and the second pressurization part continuously apply pressure to the component to be pressurized until the preset pressure holding time is reached.

[0047] Optionally, the second stage execution component further includes a force sensor; in step S300, the actual force transmitted by the second stage execution component is detected by the force sensor, and the output torque of the second rotary drive is controlled in a closed loop according to the actual force.

[0048] The two-stage vacuum pressurization method provided in this invention has at least one of the following technical effects:

[0049] The two-stage vacuum pressurization method provided in this application separates the position adjustment action of the first pressurization unit from the final pressurization action by employing different first-stage and second-stage execution components. First, the first-stage execution component drives the first pressurization unit to move, bringing it and the second pressurization unit to a predetermined relative position, and creating a vacuum pressurization space between them that can be evacuated. Thus, the first-stage execution component primarily undertakes the large-stroke movement and position adjustment of the first pressurization unit, ensuring a stable relative position between the first and second pressurization units before final pressurization. This provides a stable initial position for subsequent evacuation and pressurization actions, reducing uneven loading or stress caused by initial position deviations. Next, the vacuum pressurization space is evacuated to create the vacuum environment required for the component to be pressurized, thereby reducing residual gas in the vacuum pressurization space and lowering the possibility of bubbles, voids, or poor fit during pressurization. Then, only after the vacuum pressurization space meets the preset vacuum conditions is the first pressurization unit driven by the second-stage execution component to generate a pressurization displacement along the pressurization direction based on the predetermined relative position. Therefore, the second-stage actuator primarily undertakes the final pressurization action, allowing large-stroke position adjustment and high-pressure pressurization to be completed by different actuators. This avoids a single actuator simultaneously bearing a large travel distance and high pressurization pressure, reducing the design and load-bearing burden on individual actuators. Since the second-stage actuator applies pressurization after the first and second pressurizing sections have reached their predetermined relative positions, it only needs to generate a relatively small pressurization displacement. This improves the force transmission rigidity, operational stability, and position control accuracy during the pressurization phase, and reduces the impact, eccentric loading, or localized damage caused by the first pressurizing section prematurely applying pressure to the workpiece during its movement. Finally, once the workpiece meets the preset pressurization conditions, the second-stage actuator stops driving the first pressurizing section to move along the pressurization direction, thus preventing the first pressurizing section from further increasing its pressurization displacement and subjecting the workpiece to excessive pressure. This reduces the risk of overcompression or localized damage to the component to be pressurized, improves the pressurization consistency between different components to be pressurized, and enhances the controllability of the vacuum pressurization process. Furthermore, by sequentially performing the first stage of position adjustment, vacuuming, the second stage of pressurization, and stopping pressurization, this application separates the large-stroke position adjustment from the final pressurization action, and ensures that the second stage of pressurization is performed based on a predetermined relative position and preset vacuum conditions. This improves the stability of the vacuum pressurization process, the pressurization accuracy, and the uniformity of force on the component to be pressurized, while reducing the design burden of the actuator and the risk of the component to be pressurized being subjected to impact or overpressurization. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a schematic flowchart of a two-stage vacuum pressurization method provided in an embodiment of the present invention.

[0052] Figure 2 This is a schematic diagram of the two-stage vacuum pressurization mechanism provided in an embodiment of the present invention.

[0053] Figure 3 This is a schematic diagram of the two-stage vacuum pressurization mechanism provided in an embodiment of the present invention from another perspective.

[0054] Figure 4 This is a schematic diagram of the structure of the second execution component provided in an embodiment of the present invention.

[0055] Figure 5 This is a schematic diagram of the hidden portion of the base of the two-section vacuum pressurization mechanism provided in an embodiment of the present invention.

[0056] Figure 6 This is a cross-sectional structural diagram of the second execution component provided in an embodiment of the present invention.

[0057] Figure 7 This is a schematic diagram of the structure of the first execution component provided in an embodiment of the present invention.

[0058] Figure 8 A schematic diagram of the combined structure of the first execution component and the second execution component provided in an embodiment of the present invention.

[0059] Figure 9 This is a bottom view schematic diagram of the first pressurizing part provided in an embodiment of the present invention.

[0060] The following are the labeling elements in the figure:

[0061] Load-bearing components, 100; load-bearing plate, 110; column, 120;

[0062] Vacuum pressurization assembly, 200; First pressurization section, 210; Second pressurization section, 220; Vacuum pressurization space, 230; Vacuum extraction port, 240;

[0063] First stage actuator, 300; first rotary drive, 310; reduction and reversing assembly, 320; steering gear, 330; drive shaft, 340; coupling, 350; elevator, 360; lifting flange, 370;

[0064] Second stage execution component, 400; base, 410; second drive mechanism, 420; reversing reduction mechanism, 421; second rotary drive component, 422; lead screw transmission component, 423; axial bearing, 424; guide rail, 425; force sensor, 426; force transmission connector, 427; cylinder, 428; force transmission slider, 429; transverse wedge block, 430; rising wedge block, 440; transverse guide component, 450; sliding guide component, 460. Detailed Implementation

[0065] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.

[0066] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0068] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0069] In one embodiment of the present invention, such as Figures 1-2As shown, a two-stage vacuum pressurization method is provided. The method is based on a two-stage vacuum pressurization mechanism, which includes a first stage execution component 300, a second stage execution component 400, a first pressurization part 210, and a second pressurization part 220. The first stage execution component 300 and the second stage execution component 400 are used to drive the first pressurization part 210 to move relative to the second pressurization part 220. The first stage execution component 300 and the second stage execution component 400 are different execution components.

[0070] The method includes:

[0071] Step S100: Drive the first pressurizing part 210 to move through the first segment execution component 300, so that the first pressurizing part 210 and the second pressurizing part 220 reach a predetermined relative position, and put the vacuum pressurizing space 230 between the first pressurizing part 210 and the second pressurizing part 220 into a vacuum-evacuumable state.

[0072] Before performing step S100, the component to be pressurized is placed between the first pressurizing part 210 and the second pressurizing part 220. Subsequently, the first pressurizing part 210 is driven to move toward the second pressurizing part 220 by the first stage execution component 300, so that the first pressurizing part 210 and the second pressurizing part 220 are moved from a relatively separated state to a predetermined relative position.

[0073] In step S100, the predetermined relative position refers to the relative position of the first pressurizing part 210 and the second pressurizing part 220 after the first stage execution component 300 has completed its position adjustment. At this predetermined relative position, a vacuum pressurizing space 230 is formed between the first pressurizing part 210 and the second pressurizing part 220 to accommodate the component to be pressurized, and this vacuum pressurizing space 230 is ready for evacuation. This predetermined relative position is not the position after the second stage execution component 400 has completed its final pressurization.

[0074] Step S200: Evacuate the vacuum pressurization space 230;

[0075] In this step, the gas inside the vacuum pressurization space 230 is discharged through a vacuum pumping assembly connected to the vacuum pressurization space 230. The actual vacuum level inside the vacuum pressurization space 230 can be detected by a vacuum detection element. When the actual vacuum level reaches the preset vacuum level, it is determined that the vacuum pressurization space 230 meets the preset vacuum condition.

[0076] Step S300: After the vacuum pressurization space 230 meets the preset vacuum conditions, the second stage execution component 400 drives the first pressurization part 210 to generate a pressurization displacement along the pressurization direction based on the predetermined relative position, so as to pressurize the component to be pressurized in the vacuum pressurization space 230 through the first pressurization part 210 and the second pressurization part 220;

[0077] Step S400: After the component to be pressurized meets the preset pressurization conditions, the second stage execution component 400 is stopped from continuing to drive the first pressurization part 210 to move along the pressurization direction.

[0078] The two-stage vacuum pressurization method provided in this application separates the position adjustment action of the first pressurization unit 210 from the final pressurization action by employing different first-stage execution components 300 and second-stage execution components 400. First, the first-stage execution component 300 drives the first pressurization unit 210 to move, bringing the first pressurization unit 210 and the second pressurization unit 220 to a predetermined relative position, and placing the vacuum pressurization space 230 between them into a vacuum-evacuumable state. Therefore, the first stage execution component 300 mainly undertakes the large stroke movement and position adjustment of the first pressurizing part 210, so that the first pressurizing part 210 and the second pressurizing part 220 have a stable relative position before final pressurization, providing a stable initial position for subsequent vacuuming and pressurization operations, reducing uneven loading or force distribution caused by initial position deviation; then, the vacuum pressurization space 230 is evacuated to form the vacuum environment required for the part to be pressurized, thereby reducing residual gas in the vacuum pressurization space 230 and reducing the possibility of bubbles, voids or poor fit of the part to be pressurized during pressurization; then, only after the vacuum pressurization space 230 meets the preset vacuum conditions, the second stage execution component 400 drives the first pressurizing part 210 to generate pressurization displacement along the pressurization direction based on the predetermined relative position. Therefore, the second-stage actuator 400 mainly undertakes the final pressurization action, allowing large-stroke position adjustment and high-pressure pressurization to be completed by different actuators. This avoids the same actuator simultaneously bearing a large travel distance and high pressurization pressure, reducing the design and load-bearing burden of a single actuator. Since the second-stage actuator 400 applies pressurization after the first pressurization section 210 and the second pressurization section 220 have reached their predetermined relative positions, the second-stage actuator 400 only needs to generate a relatively small pressurization displacement. This helps improve the force transmission rigidity, action stability, and position control accuracy during the pressurization stage, and reduces the impact, off-center load, or localized damage caused by the first pressurization section 210 prematurely applying pressure to the workpiece during movement. Finally, once the workpiece meets the preset pressurization conditions, the second-stage actuator 400 stops driving the first pressurization section 210 to move along the pressurization direction, thus preventing the first pressurization section 210 from continuing to increase its pressurization displacement. By subjecting the component to excessive pressure, the risk of over-compression or localized damage to the component is reduced, and the pressure consistency between different components and the controllability of the vacuum pressurization process are improved. Furthermore, by sequentially performing the first stage of position adjustment, vacuuming, the second stage of pressurization, and stopping pressurization, the large-stroke position adjustment and the final pressurization action are separated from each other. The second stage of pressurization is performed based on a predetermined relative position and preset vacuum conditions, which can improve the stability of the vacuum pressurization process, the pressurization accuracy, and the uniformity of force on the component to be pressurized, while reducing the design burden of the actuator and the risk of impact or over-pressurization to the component to be pressurized.

[0079] In one embodiment of the present invention, such as Figures 2-3 As shown, the two-stage vacuum pressurization mechanism also includes a support component 100. The first pressurization part 210 and the second pressurization part 220 constitute the vacuum pressurization component 200. A vacuum pressurization space 230 for accommodating the component to be pressurized is formed between the first pressurization part 210 and the second pressurization part 220. The second-stage execution component 400 performs short-stroke pressurization based on a predetermined relative position, which helps to improve the stability and control accuracy of the pressurization action, and enables the component to be pressurized to obtain a more stable pressurization effect. Since the pressurization action is performed only after the predetermined positioning action is completed, it reduces the problems of premature force, impact force, or off-center load on the pressurization component during the approach process, thereby improving the operational reliability of the mechanism.

[0080] In one embodiment of the present invention, such as Figures 2-6 As shown, the second-stage execution component 400 includes a base 410, a second drive mechanism 420, a transverse wedge block 430, and a rising wedge block 440. The base 410 is disposed on the bearing component 100, and the second drive mechanism 420 is mounted on the base 410. The transverse wedge block 430 is slidably disposed on the base 410 and is drivenly connected to the second drive mechanism 420. The rising wedge block 440 is slidably mounted on the base 410 along the pressurization direction. The rising wedge block 440 engages with the wedge surface of the transverse wedge block 430. The second drive mechanism 420 is used to drive the transverse wedge block 430 to move laterally relative to the base 410, so that the transverse wedge block 430 drives the rising wedge block 440 to move along the pressurization direction through the wedge surface engagement, and the rising wedge block 440 drives the first pressurization part 210 to generate a pressurization displacement.

[0081] In this embodiment, the transverse wedge block 430 has a wedge surface for engaging with the rising wedge block 440, and the rising wedge block 440 also has a wedge surface corresponding to the transverse wedge block 430. When the second drive mechanism 420 drives the transverse wedge block 430 to move laterally, the transverse wedge block 430 pushes the rising wedge block 440 to move in the pressurization direction through the wedge surface engagement. Thus, the second stage execution component 400 can convert the transverse input motion into an output motion in the pressurization direction, and drive the first pressurization part 210 to generate a pressurization displacement through the rising wedge block 440.

[0082] The first stage execution component 300 first drives the first pressurizing part 210 and the second pressurizing part 220 to move to a predetermined relative position. The second stage execution component 400 then performs short-stroke pressurization through the wedge surface cooperation of the lateral wedge block 430 and the rising wedge block 440, so that the second stage execution component 400 outputs pressurization displacement along the pressurization direction with a small lateral input stroke.

[0083] Therefore, high-pressure pressurization is achieved by using the second-stage actuator 400 to transmit force via a wedge surface. Compared to directly using a long-stroke drive mechanism for pressurization, this reduces the second-stage pressurization stroke, improves the force transmission rigidity and pressurization stability during the pressurization phase, and achieves a larger pressurization output.

[0084] In one embodiment of the present invention, such as Figures 2-6 As shown, the second drive mechanism 420 includes a reversing reduction mechanism 421, a second rotary drive member 422, and a lead screw transmission assembly 423. The reversing reduction mechanism 421 is mounted on the base 410. The output end of the second rotary drive member 422 is drivenly connected to the input end of the reversing reduction mechanism 421. The lead screw transmission assembly 423 is drivenly connected to the output end of the reversing reduction mechanism 421. The nut seat of the lead screw transmission assembly 423 is connected to the transverse wedge block 430. The second rotary drive member 422 is used to drive the lead screw transmission assembly 423 via the reversing reduction mechanism 421, so that the lead screw transmission assembly 423 drives the nut seat to move the transverse wedge block 430 laterally.

[0085] In this embodiment, during operation, the second rotary drive 422 outputs rotational power. The reversing reduction mechanism 421 reduces the rotational power output by the second rotary drive 422, increases its torque, and changes the direction of power transmission, thereby driving the lead screw transmission assembly 423 to move. The lead screw transmission assembly 423 converts the rotational motion into the linear motion of the nut seat. The nut seat further drives the transverse wedge block 430 to move laterally, so that the transverse wedge block 430 pushes the rising wedge block 440 to move in the pressure direction through wedge surface engagement.

[0086] This configuration, through the cooperation of the second rotary drive 422, the reversing reduction mechanism 421, and the lead screw drive assembly 423, improves the position control accuracy and output stability of the lateral movement of the transverse wedge block 430. The second rotary drive 422 facilitates position and pressure control, the reversing reduction mechanism 421 helps increase output torque and optimize the mechanism layout, and the lead screw drive assembly 423 can stably convert rotary motion into linear motion, thereby improving the pressurization accuracy and response stability of the second-stage actuator 400.

[0087] In this embodiment, the reversing reduction mechanism 421 refers to a transmission mechanism capable of reducing the speed and increasing the torque of the input rotational power, and changing the transmission direction of the output power relative to the transmission direction of the input power. The specific reversing angle is not limited in this application. For example, the reversing reduction mechanism 421 employs a right-angle planetary reducer to reduce the speed and increase the torque of the rotational power output from the second rotary drive member 422 and change the power transmission direction.

[0088] In this embodiment, the second rotary drive 422 is a servo motor to facilitate control of the movement position and pressurization process of the transverse wedge block 430. In other embodiments, the second rotary drive 422 may also be other power components capable of providing rotary driving force.

[0089] In this embodiment, the lead screw drive assembly 423 is a roller lead screw. In other embodiments, the lead screw drive assembly 423 may also be a ball lead screw or other lead screw drive structure capable of converting rotary motion into linear motion.

[0090] In one embodiment of the present invention, such as Figure 2 , 3 and Figure 6 As shown, the second drive mechanism 420 also includes an axial bearing 424, which is mounted on the base 410 and is configured to cooperate with the lead screw drive assembly 423. The axial bearing 424 is used to bear the axial reaction force generated when the lead screw drive assembly 423 drives the transverse wedge block 430 to move.

[0091] In this embodiment, when the lead screw drive assembly 423 drives the transverse wedge block 430 to move laterally, the transverse wedge block 430 is subjected to the reaction force of the rising wedge block 440. This reaction force is transmitted to the lead screw drive assembly 423 along the axial direction. The axial bearing 424 is provided to withstand the axial reaction force generated during the operation of the lead screw drive assembly 423.

[0092] It should be understood that the axial bearing 424 is disposed on the side of the lead screw drive assembly 423 near the reversing reduction mechanism 421, or the axial bearing 424 may also be disposed at the axial force-bearing position between the lead screw drive assembly 423 and the base 410 to provide axial support for the lead screw drive assembly 423. This avoids the axial reaction force of the lead screw drive assembly 423 from being directly transmitted to the second rotary drive member 422 or the reversing reduction mechanism 421.

[0093] Therefore, by incorporating the axial load bearing 424, the axial load capacity of the lead screw drive assembly 423 under high load conditions is improved, axial movement is reduced, and the motion stability of the transverse wedge block 430 is enhanced. Simultaneously, the risk of axial impact loads on the second rotary drive component 422 and the reversing reduction mechanism 421 is reduced, thereby improving the service life and transmission accuracy of the second drive mechanism 420. For example, the axial load bearing 424 is a thrust angular contact bearing.

[0094] In one embodiment of the present invention, such as Figures 4-6As shown, the second segment execution component 400 further includes a lateral guide component 450, which is disposed on the base 410. The lateral wedge block 430 is slidably mounted on the lateral guide component 450, and the lateral guide component 450 is used to guide the lateral movement of the lateral wedge block 430.

[0095] In this embodiment, the lateral guide component 450 extends along the lateral movement direction of the lateral wedge block 430, enabling the lateral wedge block 430 to move smoothly along the lateral path under the drive of the second drive mechanism 420. Since the lateral wedge block 430 is subjected not only to the lateral driving force of the second drive mechanism 420 during the force transmission process on the wedge surface, but also to the load transmitted in the opposite direction by the rising wedge block 440, the lateral guide component 450, while guiding, also bears the lateral force and reaction force of the lateral wedge block 430 during the pressurization process.

[0096] By configuring the lateral guide component 450, the straightness and stability of the lateral movement of the transverse wedge block 430 can be improved, reducing the wedge block 430's sway, jamming, and frictional wear during the wedge surface stress process, thereby improving the pressurization stability and repeatability of the second-stage execution component 400. In this embodiment, the lateral guide component 450 adopts a crossed roller guide rail.

[0097] In one embodiment of the present invention, the second stage execution component 400 further includes a sliding guide component 460, which is disposed between the transverse wedge block 430 and the rising wedge block 440. The rising wedge block 440 slides with the transverse wedge block 430 through the sliding guide component 460, and the sliding guide component 460 is used to guide the movement of the rising wedge block 440 along the pressurization direction.

[0098] In this embodiment, when the transverse wedge block 430 moves laterally, it pushes the rising wedge block 440 to move in the pressure direction through wedge surface engagement. Since there is relative slippage and a large contact load between the transverse wedge block 430 and the rising wedge block 440, the sliding guide assembly 460 makes the relative movement between them smoother and reduces wear caused by direct friction of the wedge surfaces.

[0099] By providing a sliding guide assembly 460 between the lateral wedge block 430 and the rising wedge block 440, the frictional resistance during the wedge surface engagement process is reduced, and the conversion efficiency of lateral input force to output force in the pressurizing direction is improved. Simultaneously, the sliding guide assembly 460 enhances the motion stability of the rising wedge block 440, reducing pressure fluctuations caused by uneven friction or localized jamming during pressurization. In this embodiment, the sliding guide assembly 460 can also be a crossed roller guide rail.

[0100] In one embodiment of the present invention, such as Figures 4-6 As shown, the second-stage execution component 400 also includes a guide slide rail 425, which is disposed on the vertical housing of the base 410. The rising wedge block 440 is slidably connected to the guide slide rail 425, and the guide slide rail 425 is used to guide the rising wedge block 440 when it moves in the pressurization direction.

[0101] In this embodiment, the guide rail 425 is disposed on the vertical housing along the pressurization direction, and one side of the rising wedge block 440 is slidably connected to the guide rail 425. When the transverse wedge block 430 pushes the rising wedge block 440 to move along the pressurization direction, the guide rail 425 restricts the movement direction of the rising wedge block 440, so that the rising wedge block 440 moves up and down according to the predetermined pressurization direction.

[0102] By providing a guide rail 425 on the vertical housing of the base 410, the movement direction of the rising wedge block 440 is further constrained, preventing the rising wedge block 440 from tilting, swaying, or moving laterally during high-load pressurization. The guide rail 425 cooperates with the sliding guide assembly 460 to guide the rising wedge block 440 from different positions, improving the stability of the output force of the rising wedge block 440 along the pressurization direction.

[0103] In one embodiment of the present invention, such as Figures 5-6 As shown, the second stage execution component 400 further includes a force sensor 426 and a force transmission connector 427. The force sensor 426 is disposed on the rising wedge block 440, and the force transmission connector 427 is disposed on the side of the force sensor 426 opposite to the rising wedge block 440. The force sensor 426 is used to detect the force transmitted by the rising wedge block 440 along the pressurization direction, and the force transmission connector 427 is used to abut against the first pressurization part 210 to transmit the force output by the rising wedge block 440 to the first pressurization part 210.

[0104] In this embodiment, after the transverse wedge block 430 drives the rising wedge block 440 to move along the pressurization direction, the force output by the rising wedge block 440 is transmitted sequentially to the first pressurization unit 210 through the force sensor 426 and the force transmission connector 427. The force sensor 426 is located on this force transmission path, thus enabling it to detect the force output by the second-stage execution component 400 in real time. The force transmission connector 427 has a spherical fit structure, which can accommodate small angular deviations between the first pressurization unit 210 and the rising wedge block 440 during force transmission.

[0105] By setting up a force sensor 426, the actual output force of the second-stage actuator 400 is detected, providing a data basis for subsequent pressure feedback control and preventing damage or insufficient pressurization of the pressurized part due to excessive or insufficient pressure. By setting up a force transmission connector 427, assembly errors or force angle deviations are compensated for, reducing the risk of the force sensor 426 being subjected to off-center loading and improving the accuracy of pressure detection and the stability of force transmission.

[0106] It should be noted that the force transmission connector 427 is configured according to the functional requirements of this application. For example, the force transmission connector 427 is configured as a spherical concave flange. Of course, this example is not limiting, but only illustrative. Those skilled in the art can also configure specific components themselves, as long as they can achieve the functions required by this application.

[0107] In one embodiment of the present invention, such as Figures 3 to 6 As shown, the second stage execution component 400 further includes a cylinder 428 and a force transmission slider 429. The force transmission slider 429 is slidably disposed on the side of the first pressurizing part 210 facing the force transmission connector 427. The cylinder 428 is connected to the force transmission slider 429 and is used to drive the force transmission slider 429 to move between the working position and the yielding position. The cylinder 428 is used to drive the force transmission slider 429 to move after the first pressurizing part 210 and the second pressurizing part 220 have moved to the predetermined relative position. The force transmission slider 429 is moved to the working position. When the force transmission slider 429 is in the working position, the force transmission slider 429 is located between the force transmission connector 427 and the first pressure part 210, so that the force transmission connector 427 transmits force to the first pressure part 210 through the force transmission slider 429. When the force transmission slider 429 is in the yielding position, the force transmission slider 429 avoids the force transmission connector 427, so that the force transmission path between the force transmission connector 427 and the first pressure part 210 is broken.

[0108] In this embodiment, during the process of the first stage execution component 300 driving the first pressurizing part 210 and the second pressurizing part 220 to move to a predetermined relative position, the force transmission slider 429 is in the yielding position, thereby avoiding the second stage execution component 400 from forming a rigid force transmission with the first pressurizing part 210 in advance.

[0109] When the first pressurizing part 210 and the second pressurizing part 220 move to the predetermined relative position, or when the vacuum pressurizing space 230 completes the evacuation, the cylinder 428 drives the force transmission slider 429 to move to the working position, so that the second stage execution component 400 has the conditions to transmit the pressurizing force to the first pressurizing part 210.

[0110] Subsequently, the second drive mechanism 420 drives the transverse wedge block 430 to move, and the rising wedge block 440 transmits the pressurizing force to the first pressurizing part 210 through the force sensor 426, the force transmission connector 427 and the force transmission slider 429.

[0111] Therefore, by setting up cylinder 428 and force transmission slider 429, the connection and disconnection of the force transmission path of the second-stage actuator 400 are realized. During the first-stage position adjustment or vacuuming stage, force transmission slider 429 is in the yielding position, which can prevent the force transmission connector 427, force sensor 426 and rising wedge block 440 from being subjected to force in advance, reducing false contact, pre-pressure and impact load. During the second-stage pressurization stage, force transmission slider 429 moves to the working position, so that the output force of the second-stage actuator 400 can be stably transmitted to the first pressurization section 210. This can improve the safety of mechanism operation, the accuracy of pressure detection and the reliability of pressurization action.

[0112] In one embodiment of the present invention, such as Figures 2-3 As shown, there are four second-stage execution components 400. The four second-stage execution components 400 are respectively disposed in the four corner areas of the vacuum pressurization component 200 and act on four different positions of the first pressurization part 210. The four second-stage execution components 400 are used to drive the first pressurization part 210 to generate pressurization displacement along the pressurization direction at four different positions after the first pressurization part 210 and the second pressurization part 220 move to the predetermined relative position, so that the first pressurization part 210 and the second pressurization part 220 pressurize the part to be pressurized at four points.

[0113] In this embodiment, four second-stage execution components 400 can be arranged at intervals around the vacuum pressurization space 230, so that the output force of the second-stage execution components 400 is distributed in the four corner areas of the vacuum pressurization component 200. During the second-stage pressurization, the four second-stage execution components 400 can operate synchronously, or they can be controlled independently or in groups according to the pressure detection results at each position, so that the first pressurization part 210 and the second pressurization part 220 form a relatively uniform pressing state on the pressure-bearing component.

[0114] This configuration allows for multi-point pressurization at four different locations of the vacuum pressurization assembly 200, reducing issues such as uneven loading and warping caused by single-point or few-point pressurization, improving the parallelism and pressure uniformity between the first pressurization section 210 and the second pressurization section 220, thereby improving the pressurization quality of the component to be pressurized.

[0115] In step S300, the first pressurizing unit 210 is driven by the second segment execution component 400 to generate a pressurizing displacement along the pressurizing direction based on the predetermined relative position, including:

[0116] Step S310: Drive the transverse wedge block 430 to move laterally via the second drive mechanism 420;

[0117] Step S320: By engaging the wedge surfaces of the transverse wedge block 430 and the rising wedge block 440, the lateral movement of the transverse wedge block 430 is converted into the movement of the rising wedge block 440 along the pressurization direction.

[0118] Step S330: The rising wedge block 440 transmits force to the first pressurizing part 210, causing the first pressurizing part 210 to generate the pressurizing displacement along the pressurizing direction.

[0119] In this embodiment, the lateral motion output by the second drive mechanism 420 can be converted into the motion of the first pressurizing part 210 along the pressurizing direction by the wedge surface engagement between the lateral wedge block 430 and the rising wedge block 440, and a large pressurizing force output can be formed with a small input stroke by utilizing the wedge transmission.

[0120] The second-stage actuator 400 adopts a wedge-shaped force transmission method, which shortens the output stroke during the high-pressure pressurization stage, improves the force transmission rigidity and pressurization stability during the second-stage pressurization, and facilitates precise control of pressurization displacement and pressure.

[0121] In one embodiment, there are multiple second-stage execution components 400, and the multiple second-stage execution components 400 act on different positions of the first pressurizing part 210 respectively; in step S300, driving the first pressurizing part 210 to generate pressurizing displacement along the pressurizing direction based on the predetermined relative position by the second-stage execution components 400 includes: driving the first pressurizing part 210 to different positions by the multiple second-stage execution components 400 respectively, generating pressurizing displacement along the pressurizing direction by different positions, so as to pressurize the component to be pressurized at multiple points by the first pressurizing part 210 and the second pressurizing part 220.

[0122] In one embodiment of the present invention, prior to step S300, the method further includes:

[0123] Obtain the target total pressure corresponding to the component to be pressurized.

[0124] In this embodiment, the target total pressure refers to the total force that the first pressurizing part 210 and the second pressurizing part 220 need to jointly apply to the workpiece to be pressurized during the second stage of pressurization. The target total pressure can be predetermined according to the pressing process requirements of the workpiece to be pressurized and is stored in advance in the control system of the two-stage vacuum pressurization mechanism; when pressurizing the workpiece to be pressurized, the control system reads the target total pressure according to the processing parameters corresponding to the workpiece to be pressurized.

[0125] For example, in this embodiment, the target total applied pressure corresponding to the component to be pressurized is 600,000 N. When there are four second-stage execution components 400 and the four second-stage execution components 400 evenly bear the target total applied pressure, the target applied pressure corresponding to each second-stage execution component 400 is 150,000 N. Subsequently, based on the target applied pressure corresponding to each second-stage execution component 400 and the wedge transmission relationship between the lateral wedge block 430 and the rising wedge block 440, the target lateral thrust corresponding to each second-stage execution component 400 is determined.

[0126] This embodiment obtains the target total pressure corresponding to the component to be pressurized before performing the second stage pressurization action, so that the target total pressure can serve as a unified basis for load distribution among multiple second stage execution components 400 and for determining the second stage drive parameters.

[0127] Therefore, the target pressure corresponding to each second-stage execution component 400 is determined according to the target total pressure, and the target lateral thrust required by the transverse wedge block 430, the target screw drive torque required by the screw drive component 423, and the target output torque required by the second rotary drive component 422 are further determined according to the target pressure, so that the drive parameters of the second-stage execution component 400 match the actual pressure requirements of the component to be pressurized.

[0128] Therefore, this embodiment can reduce the situation of insufficient or excessive pressure caused by setting the second-stage pressurization parameters based solely on experience, and improve the rationality of determining the second-stage pressurization parameters.

[0129] In one embodiment of the present invention, such as Figures 1-2 As shown, the target applied pressure corresponding to each of the second-stage execution components 400 is determined according to the following formula:

[0130] ;

[0131] in, It is the target applied pressure corresponding to the i-th second-segment execution component 400. is the target total pressure corresponding to the component to be pressurized, and n is the number of the second stage execution components 400.

[0132] In this embodiment, by making multiple second-stage execution components 400 evenly bear the total target pressure, the calculation and control process of the driving parameters of each second-stage execution component 400 is simplified. More importantly, it enables each pressurization position to obtain a basically consistent target pressure.

[0133] In one embodiment of the present invention, such as Figures 1-2 As shown, the method further includes:

[0134] Step S030: Obtain the wedge angle between the transverse wedge block 430 and the rising wedge block 440, and the coefficient of friction at the wedge surface mating point of the transverse wedge block 430 and the rising wedge block 440;

[0135] Step S040: Determine the friction angle based on the friction coefficient;

[0136] In step S040, the friction angle is determined according to the friction coefficient using the following formula:

[0137] ,in, It is the angle of friction. It is the coefficient of friction;

[0138] Step S050: Determine the target lateral thrust required to drive the transverse wedge block 430 to move laterally based on the target applied pressure, the wedge angle, and the friction angle.

[0139] In step S050, the target lateral thrust required to drive the transverse wedge block 430 to move laterally is determined according to the following relationship:

[0140] ;

[0141] in, It is the target lateral thrust corresponding to the i-th second-segment execution component 400. It is the target applied pressure corresponding to the i-th second-segment execution component 400. It is a wedge angle. It is the angle of friction.

[0142] In this embodiment, by simultaneously considering the target applied pressure, wedge angle, and wedge surface friction in the lateral thrust calculation, the output force required by the second stage execution component 400 along the pressurization direction can be accurately converted into the lateral driving force required by the transverse wedge block 430.

[0143] In one embodiment of the present invention, such as Figures 2-6 As shown, the method further includes:

[0144] Step S060: Obtain the lead of the lead screw drive assembly 423 and the transmission efficiency of the lead screw drive assembly 423;

[0145] Step S070: Determine the target screw drive torque required to drive the screw drive assembly 423 based on the target lateral thrust, the lead of the screw drive assembly 423, and the transmission efficiency of the screw drive assembly 423.

[0146] In step S070, the target lead screw drive torque required to drive the lead screw transmission assembly 423 is determined according to the following relationship:

[0147] ;

[0148] in, It is the target lead screw drive torque corresponding to the i-th second-stage execution component 400. It is the target lateral thrust corresponding to the i-th second-segment execution component 400. It is the lead of the lead screw drive assembly 423. It is the transmission efficiency of the lead screw drive assembly 423.

[0149] In this embodiment, exemplarily, the target lateral thrust is 21000 N, the lead of the lead screw drive assembly 423 is 16 mm (0.016 m), and the transmission efficiency of the lead screw drive assembly 423 is 0.9. Substituting these values ​​into the above formula, the calculated target lead screw drive torque is approximately 59.4 N·m. Considering the accuracy of parameter values, the target lead screw drive torque is determined to be approximately 59.5 N·m. By converting the target lateral thrust into the target lead screw drive torque required by the lead screw drive assembly 423, the rotational driving force required by the lead screw drive assembly 423 to achieve the target lateral thrust can be clearly defined.

[0150] In one embodiment of the present invention, such as Figures 1-2 As shown, the output end of the second rotary drive member 422 in the second drive mechanism 420 is driven to the input end of the reversing reduction mechanism 421, and the lead screw transmission assembly 423 is driven to the output end of the reversing reduction mechanism 421.

[0151] The method further includes:

[0152] Step S081: Obtain the reduction ratio of the reversing reduction mechanism 421 and the transmission efficiency of the second drive mechanism 420;

[0153] Step S082: Based on the target lead screw drive torque, the reduction ratio of the reversing reduction mechanism 421, and the transmission efficiency of the second drive mechanism 420, determine the target output torque of the second rotary drive member 422 according to the following relationship:

[0154]

[0155] in, The target output torque of the second rotary drive 422 in the i-th second segment execution component 400, The corresponding target lead screw drive torque, The reduction ratio of the reversing deceleration mechanism 421 is given. The transmission efficiency of the second drive mechanism;

[0156] Step S083: Control the second rotary drive 422 to drive the lead screw transmission assembly 423 via the reversing reduction mechanism 421 according to the target output torque, so that the lead screw transmission assembly 423 drives the nut seat to move the transverse wedge block 430 laterally.

[0157] In this embodiment, by determining the target output torque of the second rotary drive 422 in reverse according to the target lead screw drive torque, reduction ratio and transmission efficiency, the output capability of the second rotary drive 422 can be matched with the target applied pressure of the second stage execution component 400.

[0158] In one embodiment of the present invention, such as Figures 1-2 As shown, the second drive mechanism 420 also includes an axial bearing 424 that is configured to cooperate with the lead screw drive assembly 423;

[0159] Before performing step S300, a lateral bearing capacity verification step is also included, which includes:

[0160] Step S001: Determine the maximum lateral rated working load of the second stage execution component 400 based on the target lateral thrust of the second stage execution component 400;

[0161] Step S002: Obtain the rated dynamic load of the lead screw drive assembly 423 and the rated dynamic load of the axial bearing 424;

[0162] Step S003: Compare the rated dynamic load of the lead screw drive assembly 423 and the rated dynamic load of the axial bearing 424 with the maximum lateral rated working load, respectively;

[0163] Step S004: When the rated dynamic load of the lead screw drive assembly 423 and the rated dynamic load of the axial bearing 424 are both greater than the maximum lateral rated working load, it is determined that the lead screw drive assembly 423 and the axial bearing 424 meet the lateral bearing requirements of the second stage of pressurization.

[0164] In this embodiment, in step S001, it should be understood that the target lateral thrust corresponding to the equipment under the maximum target applied pressure condition is determined as the maximum lateral rated working load of the second-stage actuation component 400. That is, the maximum lateral rated working load is determined based on the maximum total target applied pressure of the equipment, the number of the second-stage actuation components 400, the wedge angle between the lateral wedge block 430 and the rising wedge block 440, and the coefficient of friction at the wedge surface mating point of the two.

[0165] Specifically, the maximum target total applied pressure is first distributed to each of the second-stage execution components 400 to determine the maximum target applied pressure borne by a single second-stage execution component 400; then, according to the wedge transmission relationship, the maximum target applied pressure is converted into the target lateral thrust required to drive the transverse wedge block 430 to move laterally, and the target lateral thrust is determined as the maximum lateral rated working load.

[0166] The maximum lateral rated working load is determined according to the following formula:

[0167] ;

[0168] ;

[0169] in, It is the maximum lateral rated working load. It represents the maximum target load borne by a single second-stage execution component. It is a wedge angle. It is the angle of friction. It is the coefficient of friction.

[0170] For example, if the maximum target total applied pressure of the equipment is 600,000 N, and there are four second-stage execution components 400, with each second-stage execution component 400 evenly bearing the maximum target total applied pressure, then the maximum target applied pressure borne by a single second-stage execution component 400 is 150,000 N.

[0171] When the wedge angle between the transverse wedge block 430 and the rising wedge block 440 is 5.7° and the friction coefficient at the wedge surface mating point is 0.02, the friction angle is approximately 1.15°. Based on the above relationship, the maximum transverse rated working load is approximately 21000N.

[0172] In step S002, the rated dynamic loads of the lead screw drive assembly 423 and the axial bearing 424 are obtained. For example, the rated dynamic load of the lead screw drive assembly 423 is 57.8 kN, and the rated dynamic load of the combination of the axial bearing 424 is 28.5 kN.

[0173] In step S003, 57.8kN and 28.5kN are compared with 21kN respectively. Both are greater than 21kN, confirming that the lead screw drive assembly 423 and the axial bearing 424 both meet the lateral bearing requirements of the second stage of pressurization.

[0174] By comparing the rated dynamic load of the lead screw drive assembly 423 and the axial bearing 424 with the maximum lateral rated working load, it is possible to confirm that the relevant transmission components have the required load-bearing capacity before performing the maximum pressure condition.

[0175] In one embodiment of the present invention, such as Figures 1-2 As shown, step S400 includes:

[0176] Step S410: After the component to be pressurized meets the preset pressurization conditions, the second stage execution component 400 is stopped from continuing to drive the first pressurization part 210 to move along the pressurization direction;

[0177] Step S420: Control the second stage execution component 400 to maintain the current pressurization position so that the first pressurization part 210 and the second pressurization part 220 continuously apply pressure to the component to be pressurized until the preset pressure holding time is reached.

[0178] In step S420, the preset pressure holding time is pre-set according to the processing requirements of the component to be pressurized, and can be determined through pressure testing. Specifically, when the second stage execution component 400 drives the first pressurizing part 210 to reach the target pressurization state, timing begins. Under the condition that the component to be pressurized completes stable pressing, the corresponding pressure holding time is determined as the preset pressure holding time.

[0179] In this embodiment, the pressure-adding displacement is stopped after the preset pressure-adding condition is reached, so as to avoid the pressure-adding component being subjected to excessive pressure due to the continuous movement of the second stage execution component 400.

[0180] By maintaining the current pressurized position after stopping further movement and continuing the preset pressure holding time, the component to be pressurized is made to complete stable pressing under the target pressurization state, reducing the possibility of insufficient pressing or unstable pressing state of the component due to premature depressurization.

[0181] For example, when the actual force detected by the force sensor 426 reaches the target pressure, the second stage execution component 400 is controlled to maintain the pressure state for 10 seconds; after 10 seconds, the pressure holding ends and the pressure is released and reset. For different components to be pressurized, the preset pressure holding time can also be set to 5 seconds, 15 seconds, or 20 seconds, etc.

[0182] In one embodiment, the second stage execution component 400 further includes a force sensor 426; in step S300, the force sensor 426 detects the actual force transmitted by the second stage execution component 400, and the output torque of the second rotary drive component 422 is controlled in a closed loop according to the actual force.

[0183] In this embodiment, the force sensor 426 detects the actual force transmitted by the second stage execution component 400, and adjusts the output torque of the second rotary drive component 422 in a closed loop according to the actual force. This allows the output of the second rotary drive component 422 to be adjusted according to the actual pressurization state, rather than relying solely on a pre-calculated torque value for open-loop control. This reduces the deviation between the actual force and the target pressurization force caused by changes in the wedge surface fit between the transverse wedge block 430 and the rising wedge block 440, the transmission efficiency of the second drive mechanism 420, or the actual force state of the component to be pressurized. This reduces the possibility of insufficient or excessive pressurization and improves the control accuracy and stability of the second stage pressurization action.

[0184] When multiple second-stage execution components 400 are respectively equipped with the force sensor 426, the output torque of the corresponding second rotary drive component 422 can be adjusted according to the actual force at each pressurization position, thereby reducing the pressure difference between each pressurization position and improving the uniformity of the pressure applied by the first pressurization part 210 to the component to be pressurized and the pressing consistency of the component to be pressurized.

[0185] In one embodiment of the present invention, such as Figure 2 , Figure 3 and Figure 7 As shown, the first execution component 300 includes a first rotary drive 310, a reduction and reversing assembly 320, a steering gear 330, a drive shaft 340, a coupling 350, and multiple lifting platforms 360. The first rotary drive 310 is drivenly connected to the reduction and reversing assembly 320. The reduction and reversing assembly 320 is drivenly connected to the steering gear 330 through the drive shaft 340 and the coupling 350. The steering gear 330 is drivenly connected to the corresponding lifting platform 360, so that the first rotary drive 310 can synchronously drive the multiple lifting platforms 360 to operate via the reduction and reversing assembly 320, the drive shaft 340, the coupling 350, and the steering gear 330. In this embodiment, as... Figure 7 As shown, there are two steering gears 330. There are two drive shafts 340. There are four elevators 360.

[0186] In this embodiment, after the first rotary drive 310 outputs rotational power, the deceleration and reversing assembly 320 decelerates and increases the torque of the rotational power and changes the direction of power transmission. Subsequently, the power is transmitted to multiple steering gears 330 through the drive shaft 340 and the coupling 350. Each steering gear 330 is connected to a corresponding elevator 360, enabling multiple elevators 360 to operate synchronously under the drive of the same first rotary drive 310.

[0187] By synchronously driving multiple lifting platforms 360 via a first rotary drive component 310 through a reduction and reversing assembly 320, a drive shaft 340, a coupling 350, and a steering mechanism 330, the consistency of the large-stroke position adjustment of the first stage actuation component 300 can be improved, and the asynchronous error between multiple lifting points can be reduced, enabling the first pressurizing unit 210 and the second pressurizing unit 220 to move stably to the predetermined relative position. At the same time, it can reduce the control complexity and synchronization error caused by multiple independent drive sources.

[0188] For example, the first rotary drive 310 is a servo motor. In other embodiments, the first rotary drive 310 may also be other drive components capable of outputting rotational power.

[0189] Of course, as long as the error of multiple independent driving sources is within the acceptable range of actual engineering, those skilled in the art can also set multiple independent driving sources to implement the function of the first execution component 300. This application does not make specific limitations in this regard.

[0190] In one embodiment of the present invention, such as Figures 2-3 As shown, the first stage execution component 300 also includes a plurality of lifting flanges 370, each of which is respectively disposed at the output end of the corresponding elevator 360. The lifting flanges 370 are used to connect or abut with the first pressurizing part 210 to transmit the lifting movement of the elevator 360 to the first pressurizing part 210.

[0191] In this embodiment, when the elevator 360 operates, the output end drives the corresponding lifting flange 370 to move along the lifting direction. The lifting flange 370 transmits this lifting motion to the first pressurizing part 210, thereby bringing the first pressurizing part 210 closer to the second pressurizing part 220. The lifting flange 370 serves as a connector or force transition component between the output end of the elevator 360 and the pressurizing part.

[0192] By setting up the lifting flange 370, the contact or connection area between the output end of the elevator 360 and the pressurizing part is increased, so that the lifting force output by the elevator 360 is transmitted to the first pressurizing part 210 or the second pressurizing part 220 more stably, reducing local stress concentration and improving the stability and structural reliability of the first stage position adjustment action.

[0193] In one embodiment of the present invention, such as Figures 2-3 As shown, there are four lifting platforms 360. The four lifting platforms 360 are spaced apart on the bearing assembly 100 and act on different positions of the first pressurizing part 210 to drive the first pressurizing part 210 to generate pressurizing displacement along the pressurizing direction and move to the predetermined relative position.

[0194] In this embodiment, four elevators 360 are respectively positioned at the four corner areas of the first pressurizing part 210 or the second pressurizing part 220. When the first stage execution component 300 operates, the four elevators 360 rise and fall synchronously, causing the four positions of the first pressurizing part 210 or the second pressurizing part 220 to move synchronously, thereby ensuring that the first pressurizing part 210 and the second pressurizing part 220 maintain good parallelism during their movement to the predetermined relative positions.

[0195] By setting up four lifts 360, the first stage execution component 300 is supported and lifted synchronously at four points, reducing the tilting and swaying of the first pressurizing part 210 or the second pressurizing part 220 during the large stroke movement, improving the positional consistency of the first pressurizing part 210 and the second pressurizing part 220 when they enter the predetermined relative position, and providing a stable foundation for subsequent vacuuming and second stage pressurization.

[0196] In one embodiment of the present invention, the deceleration and reversing assembly 320 is a planetary deceleration steering gear, which is used to decelerate and increase the torque of the rotational power output by the first rotary drive 310 and change the direction of power transmission.

[0197] In this embodiment, a planetary reduction steering gear is disposed between the first rotary drive component 310 and the drive shaft 340. The rotational power output by the first rotary drive component 310 is reduced and amplified by the planetary reduction steering gear before being transmitted to the drive shaft 340 and coupling 350, and finally transmitted to the corresponding elevator 360 through multiple steering gears 330. The planetary reduction steering gear is used in the intermediate position to complete the main deceleration and torque amplification before the power enters the multi-path transmission system. Therefore, by setting up a planetary reduction steering gear, the output torque of the first stage actuation component 300 is increased, enabling the first rotary drive component 310 to stably drive multiple elevators 360 to move synchronously. At the same time, the planetary reduction steering gear can change the direction of power transmission, which is beneficial to optimizing the spatial layout of the transmission mechanism and reducing the structural complexity of the first stage actuation component 300.

[0198] In one embodiment of the present invention, such as Figures 2-3 As shown, the vacuum pressurization component 200 is provided with a vacuum port 240 that communicates with the vacuum pressurization space 230. The vacuum port 240 is used to communicate with the vacuum pumping component to evacuate the vacuum pressurization space 230.

[0199] In this embodiment, after the first stage execution component 300 drives the first pressurizing part 210 and the second pressurizing part 220 to move to a predetermined relative position, a vacuum pressurizing space 230 is formed between the first pressurizing part 210 and the second pressurizing part 220. The vacuum pumping component evacuates the vacuum pressurizing space 230 through the vacuum port 240 to expel the gas inside the vacuum pressurizing space 230. After the vacuum pressurizing space 230 reaches a preset vacuum level, the second stage execution component 400 drives the first pressurizing part 210 to generate a pressurizing displacement along the pressurizing direction to pressurize the component to be pressurized. Therefore, by providing the vacuum port 240 connected to the vacuum pressurizing space 230, the vacuum pressurizing space 230 forms the required vacuum environment before the second stage pressurization, reducing problems such as air bubbles, voids, or poor adhesion of the component to be pressurized during the pressurization process. At the same time, the sequential coordination of the first stage pre-positioning, vacuuming, and second stage pressurization is beneficial to improving the quality of vacuum pressurization processing.

[0200] In one embodiment of the present invention, such as Figures 2-3 As shown, the supporting assembly 100 includes a supporting plate 110 and a column 120. The column 120 is disposed on the supporting plate 110. The base 410 is disposed on the supporting plate 110. The first rotary drive component 310, the deceleration and reversing assembly 320, the steering gear 330, and multiple lifting mechanisms 360 are all disposed on the supporting plate 110. The first pressurizing part 210 and the second pressurizing part 220 are disposed on the column 120.

[0201] For example, in this embodiment, the second pressurizing part 220 is fixedly disposed on the top of the column 120, and the first pressurizing part 210 is slidably disposed on the column 120. Before processing begins, the first segment execution component 300 supports the first pressurizing part 210. At this time, the part to be pressurized can be placed between the first pressurizing part 210 and the second pressurizing part 220. Then, the first segment execution component 300 drives the first pressurizing part 210 to move the first pressurizing part 210 and the second pressurizing part 220 to a predetermined relative position, and then performs vacuuming to form a vacuum pressurization space 230.

[0202] In one embodiment of the present invention, the method further includes a pre-pressurization mechanism arrangement action, which specifically includes the following steps:

[0203] First, such as Figure 8 and Figure 9 As shown, four first action positions 510 and four second action positions 520 are provided in the first pressurizing part 210, and the four first action positions 510 and the four second action positions 520 are staggered along the circumference of the first pressurizing part 210.

[0204] Next, the first segment execution component 300 is configured to include four elevators 360, and the four elevators 360 are configured to act on the first pressurization part 210 through four first operating positions 510 respectively; at the same time, the number of the second segment execution components 400 is also four, and the four second segment execution components 400 are configured to act on the first pressurization part 210 through four second operating positions 520 respectively.

[0205] The four first action positions 510 are symmetrically distributed with respect to the center of the first pressurizing part 210, and the four second action positions 520 are symmetrically distributed with respect to the center of the first pressurizing part 210. Each first action position 510 and a corresponding second action position 520 are located in the same corner area of ​​the first pressurizing part 210 and are staggered with each other.

[0206] It should be understood that the two-stage vacuum pressurization mechanism adopts a double four-point staggered action layout. Specifically, the first action position 510 refers to the position where the elevator 360 is connected to or abuts against the first pressurization part 210 through the lifting flange 370 and transmits the lifting force to the first pressurization part 210; the second action position 520 refers to the position where the second stage actuation component 400 transmits the second stage pressurization force to the first pressurization part 210 through the force transmission connector 427 and / or the force transmission slider 429.

[0207] The first pressurizing part 210 forms four corner regions around its center. Each corner region is provided with a first action position 510 and a second action position 520, and the first action position 510 and the second action position 520 in the same corner region are staggered.

[0208] The first stage execution component 300 includes four elevators 360, and the four elevators 360 act on the first pressurization part 210 through the four first action positions 510 respectively; the number of the second stage execution components 400 is also four, and the four second stage execution components 400 act on the first pressurization part 210 through the four second action positions 520 respectively.

[0209] In step S100, the first rotary drive 310 synchronously drives the four lifting platforms 360 through the deceleration and reversing assembly 320, the steering gear 330, the drive shaft 340 and the coupling 350, so that the four lifting platforms 360 transmit lifting force to the first pressurizing part 210 at the four first working positions 510 respectively, thereby driving the first pressurizing part 210 to move smoothly to the predetermined relative position.

[0210] In step S300, the first segment execution component 300 stops continuing to perform the position adjustment action and uses the predetermined relative position as the initial position of the second segment pressurization action; the four second segment execution components 400 respectively transmit force to the first pressurization part 210 at the four second action positions 520 to drive the first pressurization part 210 to generate pressurization displacement along the pressurization direction.

[0211] Specifically, each of the second-stage execution components 400 drives the corresponding transverse wedge block 430 to move laterally via the second drive mechanism 420, and drives the rising wedge block 440 to move along the pressurization direction through the wedge surface cooperation between the transverse wedge block 430 and the corresponding rising wedge block 440, so that the four rising wedge blocks 440 respectively transmit force to the first pressurization part 210 at the four second action positions 520.

[0212] In step S300, the four second-stage execution components 400 operate synchronously; or, during the process of the four second-stage execution components 400 jointly applying pressure, the force sensor 426 corresponding to each second-stage execution component 400 detects the actual force of the four second action positions 520 respectively, and adjusts the output torque of the corresponding second rotary drive component 422 according to the detection results.

[0213] In this embodiment, by distributing the four first action positions 510 and the four second action positions 520 around the center of the first pressurizing part 210, and by staggering the first action positions 510 and the second action positions 520 in the same corner area, the first segment execution component 300 and the second segment execution component 400 can act on the first pressurizing part 210 from different positions.

[0214] On the one hand, it can provide relatively independent installation space and force transmission path for the elevator 360 and the second stage execution component 400, reduce structural interference between the two sets of execution components, and enable the first stage large stroke position adjustment structure and the second stage short stroke high pressure pressurization structure to be compactly arranged on one side of the first pressurization part 210.

[0215] On the other hand, in step S100, the four elevators 360 synchronously drive the first pressurizing part 210 to move at the four first operating positions 510, which can form a four-point synchronous support, reduce the tilting and swaying of the first pressurizing part 210 during the movement, and improve the positional consistency of the first pressurizing part 210 when it reaches the predetermined relative position.

[0216] In step S300, the four second-stage execution components 400 apply pressure to the first pressurizing part 210 at four second-stage action positions 520 that are offset from the first action position 510, respectively. This avoids the first-stage position adjustment force and the second-stage pressure being repeatedly concentrated on the same position of the first pressurizing part 210, thus dispersing the force transmission paths of the two stages and reducing the possibility of local force concentration, local deformation, or stress concentration.

[0217] When the output forces corresponding to the same set of action positions are basically balanced, the symmetrical arrangement of the four first action positions 510 and the four second action positions 520 is beneficial to make the resultant force of the first segment position adjustment force and the second segment pressurization force close to the center of the first pressurization part 210, thereby reducing eccentric load and overturning moment and improving the motion stability and pressurization stability of the first pressurization part 210.

[0218] When the four force sensors 426 detect the actual force at the four second action positions 520 respectively, the output of the corresponding second rotary drive 422 can be adjusted according to the force at each second action position 520, thereby reducing the pressure difference between different pressurization positions and improving the uniformity of the pressure applied by the first pressurization part 210 to the pressurized part and the pressing consistency of the pressurized part.

[0219] In this application, the two-stage vacuum pressurization mechanism is applied to a vacuum laminating machine. That is, after the two-stage vacuum pressurization method is applied to the two-stage vacuum pressurization mechanism in the vacuum laminating machine, it can solve the technical problems in the prior art where the vacuum laminating machine uses the same drive mechanism to complete the large stroke position adjustment and high pressure pressurization action of the pressurization part, which makes it difficult for the drive mechanism to take into account both the movement stroke and the pressure, and easily leads to insufficient transmission rigidity, large deformation under force, unstable pressurization position, uneven force on the part to be pressurized, and unstable pressurization quality.

[0220] The rest of this embodiment is the same as that in Embodiment 1. Features not explained in this embodiment are explained using the methods in Embodiment 1, and will not be repeated here.

[0221] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A two-stage vacuum pressurization method, characterized in that, The method is based on a two-stage vacuum pressurization mechanism, which includes a first stage execution component, a second stage execution component, a first pressurization part, and a second pressurization part. The first stage execution component and the second stage execution component are used to drive the first pressurization part to move relative to the second pressurization part. The first stage execution component and the second stage execution component are different execution components. The method includes: Step S100: Drive the first pressurizing part to move through the first segment execution component, so that the first pressurizing part and the second pressurizing part reach a predetermined relative position, and put the vacuum pressurization space between the first pressurizing part and the second pressurizing part into a vacuum-evacuumable state; Step S200: Evacuate the vacuum pressurization space; Step S300: After the vacuum pressurization space meets the preset vacuum conditions, the first pressurization part is driven by the second stage execution component to generate a pressurization displacement along the pressurization direction based on the predetermined relative position, so as to pressurize the component to be pressurized in the vacuum pressurization space through the first pressurization part and the second pressurization part; Step S400: After the component to be pressurized meets the preset pressurization conditions, stop the second stage execution component from continuing to drive the first pressurization part to move along the pressurization direction.

2. The two-stage vacuum pressurization method according to claim 1, characterized in that, The second stage execution component includes a second drive mechanism, a transverse wedge block, and a rising wedge block, wherein the rising wedge block engages with the wedge surface of the transverse wedge block; In step S300, the first pressurizing part is driven by the second segment execution component to generate a pressurizing displacement along the pressurizing direction based on the predetermined relative position, including: Step S310: Drive the transverse wedge block to move laterally via the second driving mechanism; Step S320: By engaging the wedge surfaces of the transverse wedge block and the rising wedge block, the lateral movement of the transverse wedge block is converted into the movement of the rising wedge block along the pressure direction; Step S330: The force is transmitted to the first pressurizing part through the rising wedge block, so that the first pressurizing part generates the pressurizing displacement along the pressurizing direction.

3. The two-stage vacuum pressurization method according to claim 2, characterized in that, Prior to step S300, the method further includes: Obtain the target total pressure corresponding to the component to be pressurized.

4. The two-stage vacuum pressurization method according to claim 3, characterized in that, The target applied pressure corresponding to each of the second-stage execution components is determined according to the following formula: ； in, It is the target pressure corresponding to the i-th second-stage execution component. is the target total pressure corresponding to the component to be pressurized, and n is the number of the second stage execution components.

5. The two-stage vacuum pressurization method according to claim 4, characterized in that, The method further includes: Step S030: Obtain the wedge angle between the transverse wedge block and the rising wedge block, as well as the coefficient of friction at the wedge surface mating point of the transverse wedge block and the rising wedge block; Step S040: Determine the friction angle based on the friction coefficient; Step S050: Determine the target lateral thrust required to drive the transverse wedge block to move laterally based on the target applied pressure, the wedge angle, and the friction angle.

6. The two-stage vacuum pressurization method according to claim 5, characterized in that, The second drive mechanism includes a lead screw drive assembly, wherein the nut seat of the lead screw drive assembly is connected to the transverse wedge block; The method further includes: Step S060: Obtain the lead of the lead screw drive assembly and the transmission efficiency of the lead screw drive assembly; Step S070: Determine the target screw drive torque required to drive the screw drive assembly based on the target lateral thrust, the lead of the screw drive assembly, and the transmission efficiency of the screw drive assembly.

7. The two-stage vacuum pressurization method according to claim 6, characterized in that, The second drive mechanism further includes a reversing reduction mechanism and a second rotary drive component. The output end of the second rotary drive component is driven to the input end of the reversing reduction mechanism, and the lead screw transmission assembly is driven to the output end of the reversing reduction mechanism. The method further includes: Step S081: Obtain the reduction ratio of the reversing deceleration mechanism and the transmission efficiency of the second drive mechanism; Step S082: Based on the target lead screw drive torque, the reduction ratio of the reversing reduction mechanism, and the transmission efficiency of the second drive mechanism, determine the target output torque of the second rotary drive component according to the following formula: in, The target output torque of the second rotary drive in the i-th second segment execution component, The corresponding target lead screw drive torque, Let be the reduction ratio of the reversing deceleration mechanism. The transmission efficiency of the second drive mechanism; Step S083: Control the second rotary drive component to drive the lead screw transmission assembly via the reversing reduction mechanism according to the target output torque, so that the lead screw transmission assembly drives the nut seat to move the transverse wedge block laterally.

8. The two-stage vacuum pressurization method according to claim 7, characterized in that, The second drive mechanism also includes an axial load bearing that cooperates with the lead screw drive assembly; Before performing step S300, a lateral bearing capacity verification step is also included, which includes: Step S001: Determine the maximum lateral rated working load of the second stage execution component based on the target lateral thrust of the second stage execution component; Step S002: Obtain the rated dynamic load of the lead screw drive assembly and the rated dynamic load of the axial bearing; Step S003: Compare the rated dynamic load of the lead screw drive assembly and the rated dynamic load of the axial bearing with the maximum lateral rated working load, respectively; Step S004: When the rated dynamic load of the lead screw drive assembly and the rated dynamic load of the axial bearing are both greater than the maximum lateral rated working load, it is determined that the lead screw drive assembly and the axial bearing meet the lateral bearing requirements of the second stage of pressurization.

9. The two-stage vacuum pressurization method according to claim 1, characterized in that, Step S400 includes: Step S410: After the component to be pressurized meets the preset pressurization conditions, stop the second stage execution component from continuing to drive the first pressurization part to move along the pressurization direction; Step S420: Control the second stage execution component to maintain the current pressurization position so that the first pressurization part and the second pressurization part continuously apply pressure to the component to be pressurized until the preset pressure holding time is reached.

10. The two-stage vacuum pressurization method according to claim 1, characterized in that, The second stage execution component also includes a force sensor; in step S300, the actual force transmitted by the second stage execution component is detected by the force sensor, and the output torque of the second rotary drive is controlled in a closed loop according to the actual force.

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