Laminating machine and workpiece

Abstract

The invention relates to a laminating machine and a workpiece. The laminating machine comprises a plurality of laminated plates, wherein at least one communicating channel is arranged in each laminated plate; the oil return module comprises a plurality of backflow conveying pipelines, the backflow conveying pipelines correspond to the laminated boards one to one, and the backflow conveying pipelines are connected with the communicating channels of the corresponding laminated boards; under the condition that the laminating machine is in an oil return state, hydraulic oil in the communicating channel of each laminated plate flows out through the correspondingly connected backflow conveying pipeline; and the controller is used for adjusting the oil return flow of the hydraulic oil in the backflow conveying pipeline corresponding to the target laminated board according to the first temperature and the second temperature for each target laminated board under the condition that the laminating machine is in an oil return state, the laminated board temperature difference between the target laminated board and the adjacent laminated board is smaller than a preset temperature difference threshold value. The laminating machine can accurately control the temperature in the machining process of a workpiece.

Description

Technical Field

[0001] This application relates to the field of PCB (Printed Circuit Board) processing, and in particular to a laminator and a workpiece. Background Technology

[0002] A laminator is a mechanical device that tightly presses together multiple layers of materials using pressure and temperature control. A laminator consists of multiple laminating plates. Currently, most PCB laminators use a centralized oil inlet and outlet system to heat and control the temperature of multiple laminating plates. However, this method has several problems in practical applications. Due to the different distribution of the laminating plates within the laminator cavity and the varying number of layers being processed, the heating rates of the laminating plates and materials at different locations differ. This uneven temperature distribution causes inconsistent cross-linking and curing times for the corresponding laminating materials, ultimately resulting in uneven thickness of the PCB board due to variations in adhesive flow, severely impacting PCB product quality.

[0003] Currently, methods for temperature control of multiple laminates in a laminator include: setting up a heating circulation unit in the laminator, which is used to exchange heat with the laminates so that the temperature of the laminates is within a preset temperature range.

[0004] However, the temperature control of current laminators during the processing is not accurate enough, which in turn prevents the laminators from accurately processing the workpieces. Summary of the Invention

[0005] Therefore, it is necessary to provide a laminator that can accurately control the temperature during the workpiece processing and a workpiece in response to the above-mentioned technical problems.

[0006] In a first aspect, this application provides a laminator, the laminator comprising:

[0007] A lamination module includes multiple laminates, each laminate having at least one connecting channel;

[0008] The oil return module includes multiple return conveying pipes, each of which corresponds to a laminate and is connected to the corresponding laminate through a connecting channel.

[0009] When the laminator is in the oil return state, the hydraulic oil in the connecting channel of each laminate flows out through the corresponding connected return delivery pipe;

[0010] Controller, the controller is used for:

[0011] When the laminator is in the oil return state, for each target laminate, the first temperature of the target laminate and the second temperature of the adjacent laminates of the target laminate are obtained, wherein the target laminate is the laminate to be temperature regulated among multiple laminates.

[0012] Based on the first temperature and the second temperature, the return flow rate of hydraulic oil in the return delivery pipeline corresponding to the target laminate is adjusted so that the temperature difference between the target laminate and the adjacent laminate is less than the preset temperature difference threshold.

[0013] In one embodiment, the oil return module further includes:

[0014] Multiple reflux control units are provided, each corresponding to a reflux delivery pipeline of the target laminate. The reflux control unit is installed on the corresponding reflux delivery pipeline and is used to control the reflux flow rate of hydraulic oil in the reflux delivery pipeline corresponding to the target laminate.

[0015] In one embodiment, the reflux control unit is a reflux control valve;

[0016] The controller is also used for:

[0017] Based on the first and second temperatures, adjust the opening of the reflux control valve to regulate the return flow rate of hydraulic oil in the reflux delivery pipeline corresponding to the target laminate.

[0018] In one embodiment, the target laminate is at least one of an odd-numbered laminate and an even-numbered laminate.

[0019] In one embodiment, adjacent laminates comprise one or two, and the controller is further configured to:

[0020] When there are two adjacent laminates, obtain the first initial temperature of each of the two adjacent laminates adjacent to the target laminate, and detect the second temperature based on the two first initial temperatures;

[0021] When adjacent laminates are a single unit, obtain the second initial temperature of the adjacent laminates, and detect the second temperature based on the second initial temperature;

[0022] Based on the error between the first and second temperatures, adjust the return flow rate of the hydraulic oil in the return delivery pipeline corresponding to the target laminate.

[0023] In one embodiment, the laminator further includes:

[0024] The sealing module includes a vacuum chamber, a first vacuum door, and a second vacuum door;

[0025] The vacuum chamber is connected to the first surface of the lamination module, the first vacuum door is disposed on the vacuum chamber, and the second vacuum door is disposed on the second surface of the lamination module opposite to the first surface;

[0026] When the laminator is in operation, the first vacuum door and the second vacuum door are closed, so that the lamination module is in a sealed environment.

[0027] In one embodiment, the oil return module further includes:

[0028] The reflux oil collection unit is located inside the vacuum chamber and is connected to multiple reflux conveying pipelines;

[0029] Oil collection and conveying pipeline, which is connected to the return oil collection unit;

[0030] When the laminator is in the oil return state, the hydraulic oil in the connecting channel of each laminator flows to the return oil collection unit through the corresponding connected return delivery pipe, and the hydraulic oil in the return oil collection unit flows out through the collection delivery pipe.

[0031] In one embodiment, the sealing module further includes:

[0032] A transfer sealing cover for the conveying pipeline is installed on the outer surface of the vacuum chamber. The return conveying pipeline passes through the transfer sealing cover to divide the return conveying pipeline into a first return conveying pipeline installed inside the vacuum chamber and a second return conveying pipeline installed outside the vacuum chamber. A return control unit is installed on the second return conveying pipeline.

[0033] In one embodiment, the sealing module further includes:

[0034] The vacuum door control unit is connected to the first vacuum door and is used to control the opening and closing of the first vacuum door.

[0035] In one embodiment, the laminator further includes:

[0036] The support module includes a support plate disposed on the target surface of the laminating module, and multiple support plates are used to protect the laminating module. The target surface is a plurality of surfaces excluding the first surface and the second surface.

[0037] The vacuum chamber is connected to two support plates adjacent to the first surface of the lamination module.

[0038] In one embodiment, the laminator further includes:

[0039] The thrust module includes a movable platform and a hydraulic cylinder. The movable platform is connected to the lamination module, and the hydraulic cylinder passes through the support module and is connected to the movable platform. The hydraulic cylinder is used to drive the movable platform to provide pressing pressure for workpieces placed on multiple lamination plates.

[0040] In one embodiment, the laminator further includes:

[0041] The temperature acquisition module includes a temperature sensor installed on each laminate, which is used to acquire the laminate temperature of each laminate.

[0042] In one embodiment, the laminator further includes:

[0043] The oil inlet module includes an oil inlet pipe and multiple oil delivery pipes;

[0044] The oil inlet pipe is connected to multiple oil delivery pipes, and each oil delivery pipe corresponds to a laminate. The oil delivery pipe is connected to the corresponding laminate through a connecting channel.

[0045] When the laminator is in the oil inlet state, the hydraulic oil is distributed to multiple oil inlet delivery pipes through the oil inlet pipe. The hydraulic oil flows through each oil inlet delivery pipe to the corresponding connecting channel of the laminator, so that multiple laminators can use hydraulic oil to press the workpiece together.

[0046] Secondly, this application also provides a workpiece, which is placed on multiple laminating plates in the above-mentioned laminator, and the workpiece is processed by the laminator.

[0047] The aforementioned laminator and workpiece, the laminator includes a lamination module, an oil return module, and a controller. Each laminator plate in the lamination module is provided with at least one connecting channel. By setting corresponding return conveying pipes for each connecting channel of the laminator plate, when the laminator is in the oil return state, the return flow rate of hydraulic oil in the return conveying pipe corresponding to the target laminator plate to be temperature-regulated can be accurately controlled according to a first temperature and a second temperature. This ensures that the temperature difference between the target laminator plate and adjacent laminators is less than a preset temperature difference threshold. It can be seen that in this laminator, by accurately adjusting the temperature of the target laminator plate to be temperature-regulated, making it change with the temperature changes of adjacent laminators, the temperature difference between laminators in different positions is effectively reduced, and the temperature uniformity between multiple laminators is improved. This solves the problem of uneven thickness caused by uneven temperature during workpiece processing. Therefore, the processing accuracy of the workpiece improves with the accuracy of temperature control. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of the laminator in one embodiment;

[0050] Figure 2 An angle view of the laminator in one embodiment;

[0051] Figure 3 This is a flowchart illustrating the oil return module in one embodiment;

[0052] Figure 4 A rear view of the laminator in a detailed application embodiment;

[0053] Figure 5 A side view of a laminator in a detailed application embodiment;

[0054] Figure 6 This is a diagram showing the distribution of the return flow piping inside the laminator in a detailed application embodiment;

[0055] Figure 7 This is a flowchart of a PID (proportional-integral-derivative) control algorithm in a detailed application example. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0058] It is understood that the terms "first," "second," etc., used in this application may be used herein to describe various components, but these components are not limited by these terms. These terms are only used to distinguish one component from another. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0059] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0060] It is understandable that "at least one piece" refers to one or more pieces, while "more than one piece" refers to two or more pieces. "At least a part of a component" refers to part or all of a component.

[0061] When used herein, the singular forms of “a,” “a piece,” and “ / the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of a piece or more of other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0062] A laminator is a mechanical device that tightly presses together multiple layers of materials using pressure and temperature control. A laminator consists of multiple laminating plates. Currently, most PCB laminators use a centralized oil inlet and outlet system to heat and control the temperature of multiple laminating plates. However, this method has several problems in practical applications. Due to the different distribution of the laminating plates within the laminator cavity and the varying number of layers being processed, the heating rates of the laminating plates and materials at different locations differ. This uneven temperature distribution causes inconsistent cross-linking and curing times for the corresponding laminating materials, ultimately resulting in uneven thickness of the PCB board due to variations in adhesive flow, severely impacting PCB product quality.

[0063] Currently, methods for temperature control of multiple laminates in a laminator include: setting up a heating circulation unit in the laminator, which is used to exchange heat with the laminates so that the temperature of the laminates is within a preset temperature range.

[0064] However, the temperature control of current laminators during the processing is not accurate enough, which in turn prevents the laminators from accurately processing the workpieces.

[0065] In other words, the centralized oil inlet / outlet method of existing laminators leads to uneven temperature distribution of the laminators and the corresponding laminating materials, resulting in inaccurate lamination of PCB boards and affecting the quality of PCB board processing. This application aims to solve this problem by providing a laminator that can accurately control the temperature during the processing to ensure uniform temperature distribution of multiple laminators, improve the processing accuracy of PCB boards, and thus improve the production quality of PCB boards.

[0066] To address this, this application provides a laminator and a workpiece. The laminator includes a lamination module, an oil return module, and a controller. Each laminator in the lamination module has at least one connecting channel. By providing corresponding return conveying pipes for each connecting channel of the laminator, the return flow rate of hydraulic oil in the return conveying pipe corresponding to the target laminator can be accurately controlled based on a first temperature and a second temperature when the laminator is in the oil return state. This ensures that the temperature difference between the target laminator and adjacent laminators is less than a preset temperature difference threshold. It can be seen that in this laminator 1000, by accurately adjusting the temperature of the target laminator to be adjusted, making it change with the temperature of adjacent laminators, the temperature difference between laminators at different locations is effectively reduced, and the temperature uniformity among multiple laminators is improved. This solves the problem of uneven thickness caused by uneven temperature during workpiece processing. Therefore, the processing accuracy of the workpiece improves with the accuracy of temperature control.

[0067] like Figure 1 As shown, a laminator 1000 is provided, the laminator 1000 comprising:

[0068] The lamination module 50 includes multiple laminates, each laminate having at least one connecting channel.

[0069] The oil return module 100 includes multiple return conveying pipes 110, each return conveying pipe 110 corresponds to a laminate, and the return conveying pipe 110 is connected to the corresponding laminate's connecting channel.

[0070] When the laminator 1000 is in the oil return state, the hydraulic oil in the connecting channel of each laminate flows out through the corresponding connected return delivery pipe 110;

[0071] Controller 200, controller 200 is used for:

[0072] When the laminator 1000 is in the oil return state, for each target laminate, the first temperature of the target laminate and the second temperature of the adjacent laminates of the target laminate are obtained, wherein the target laminate is the laminate to be temperature regulated among multiple laminates.

[0073] Based on the first temperature and the second temperature, the return flow rate of hydraulic oil in the return delivery pipeline 110 corresponding to the target laminate is adjusted so that the temperature difference between the target laminate and the adjacent laminate is less than the preset temperature difference threshold.

[0074] The laminator 1000 is an industrial device primarily used to process multi-layer materials through heating and pressurization. Further, the laminator 1000 includes a lamination module 50, which is used to press workpieces together using multiple lamination plates. Specifically, the multiple lamination plates in the lamination module 50 are generally arranged in parallel. Multiple layers of material are placed on these plates, and then the multi-layer materials are pressed together through heating and pressurization. Each lamination plate is not solid but has at least one connecting channel for the circulation of hydraulic oil to achieve uniform heating of the workpiece. For example, the connecting channel can be a U-shaped channel or a network-type channel, etc.

[0075] Hydraulic oil in hydraulic systems primarily serves as a medium for transmitting pressure, lubrication, and cooling. Return oil refers to the process by which hydraulic oil flows out of the laminator 1000 through the return oil line after the workpiece has been processed, maintaining system oil circulation. In practical applications, after leaving the laminator 1000, the return oil can flow to a return oil processing unit, such as an oil tank or a secondary loop unit, such as a boiler.

[0076] Specifically, hydraulic oil is delivered to the connecting channels in multiple laminates in the lamination module 50. Its main function is to transmit pressure and ensure that the laminates apply pressure to the material evenly and stably. At the same time, it also lubricates and cools the laminates so that the workpieces on each laminate can be effectively and evenly heated and processed through the hydraulic oil in the connecting channels.

[0077] A return oil module 100 is provided in the laminator 1000 to allow the hydraulic oil in the laminator 1000 to flow out. Since there are multiple laminator plates in the laminator module 50, the purpose of providing the return oil module 100 is to provide a corresponding return conveying pipe 110 for each laminator plate. Each return conveying pipe 110 is connected to at least one connecting channel in the corresponding laminator plate, so that the hydraulic oil in each laminator plate can flow back out of the laminator through the corresponding return conveying pipe 110.

[0078] When the laminator 1000 is in the return oil state, the hydraulic oil returning from the laminator is delivered to the return delivery pipe 110 and then flows out of the laminator through the return delivery pipe 110. However, if all the hydraulic oil returning from the laminator flows out of the laminator, precise temperature control of the laminator cannot be achieved. Therefore, the hydraulic oil returning from the laminator does not need to flow out of the laminator entirely; instead, the flow rate of the hydraulic oil returning from the laminator needs to be adjusted, which means adjusting the return oil flow rate in the return delivery pipe 110 corresponding to the laminator.

[0079] To this end, this application also includes a controller 200. The controller 200 is used to adjust the return flow rate of hydraulic oil in the return delivery pipe 110 corresponding to the target laminate when the laminator 1000 is in the return oil state, thereby adjusting the temperature of the corresponding laminate to ensure a uniform temperature distribution among the multiple laminates of the laminator 1000. Specifically, when the laminator 1000 is in the return oil state, the controller 200 selects the target laminate requiring temperature adjustment from among the multiple laminates. For each target laminate, firstly, it obtains the first temperature of the target laminate and the second temperature of its adjacent laminates; then, based on the first and second temperatures, it adjusts the return flow rate of hydraulic oil in the return delivery pipe 110 corresponding to the target laminate, so that the temperature difference between the target laminate and its adjacent laminates is less than a preset temperature difference threshold. By adjusting the temperature of all target laminates, a uniform temperature distribution is achieved between each target laminate and its adjacent laminates, thus ensuring a uniform temperature distribution among all laminates.

[0080] Furthermore, the controller 200 adjusts the return flow rate of hydraulic oil in the return delivery pipe 110 corresponding to the target laminate based on the first temperature and the second temperature. This includes using a PID algorithm to adjust the return flow rate of hydraulic oil in the return delivery pipe 110 corresponding to the target laminate based on the first temperature and the second temperature. The PID algorithm is a commonly used closed-loop control algorithm that adjusts the control quantities of the proportional, integral, and derivative components to enable the output value of the controlled object to quickly, accurately, and stably track the specified target value. The PID algorithm used in this application is a master-slave PID control mode, using the first temperature as the temperature control object and the second temperature as the following reference, so that the first temperature follows the adjustment of the second temperature, ensuring that the temperature difference between the target laminate and adjacent laminates is less than a preset temperature difference threshold. In practical applications, the master-slave following control strategy can ensure that the temperature difference between adjacent laminates is ≤1℃.

[0081] The aforementioned laminator 1000 includes a lamination module 50, an oil return module 100, and a controller 200. Each laminator in the lamination module 50 has at least one connecting channel. By providing a corresponding return conveying pipe 110 for each connecting channel of the laminator, the return flow rate of hydraulic oil in the return conveying pipe 110 corresponding to the target laminator can be accurately controlled based on a first temperature and a second temperature when the laminator 1000 is in the oil return state. This ensures that the temperature difference between the target laminator and adjacent laminators is less than a preset temperature difference threshold. It can be seen that in this laminator 1000, by accurately adjusting the temperature of the target laminator to be adjusted so that it changes with the temperature of adjacent laminators, the temperature difference between laminators in different positions is effectively reduced, and the temperature uniformity between multiple laminators is improved. This solves the problem of uneven thickness caused by uneven temperature during workpiece processing. Therefore, the processing accuracy of the workpiece improves with the accuracy of temperature control.

[0082] In one exemplary embodiment, such as Figure 2 The image shown is a perspective view of the laminator 1000. The oil return module 100 also includes:

[0083] Multiple reflux control units 150 are provided, each of which corresponds one-to-one with the reflux delivery pipe 110 corresponding to the target laminate. The reflux control unit 150 is installed on the corresponding reflux delivery pipe 110 and is used to control the reflux oil flow rate of hydraulic oil in the reflux delivery pipe 110 corresponding to the target laminate.

[0084] Specifically, not every laminate is equipped with a corresponding reflux control unit 150, but rather a corresponding reflux control unit 150 needs to be set for the target laminate for temperature regulation.

[0085] Therefore, the structure of the reflux control unit 150 is configured such that each target laminate corresponds to a reflux control unit 150, and each target laminate corresponds to a reflux delivery pipe 110. The reflux control unit 150 for each target laminate is installed on the reflux delivery pipe 110 corresponding to that target laminate. The reflux control unit 150 controls the return flow rate of hydraulic oil in the reflux delivery pipe 110 corresponding to the target laminate. In practical applications, the reflux control unit 150 can be a control valve or a control switch, etc.

[0086] The controller 200 generates return oil flow control information based on the first temperature and the second temperature. The return oil flow control information represents the return oil flow control information of hydraulic oil in the return delivery pipeline 110 corresponding to the target laminate. The controller 200 sends the return oil flow control information to the return control unit 150. The return control unit 150 controls the return oil flow of hydraulic oil in the return delivery pipeline 110 corresponding to the target laminate according to the return oil flow control information. Hydraulic oil that cannot flow back out of the laminator 1000 through the return delivery pipeline 110 will continue to return to the corresponding target laminate. Through the above means, the flow rate in the target laminate is adjusted, thereby driving the temperature adjustment of the target laminate.

[0087] In the above embodiments, by setting a corresponding reflux control unit 150 for the target laminate that requires temperature regulation, instead of setting a corresponding reflux control unit 150 for all target laminates, the system structure is simpler and the cost is reduced. Furthermore, by setting a corresponding reflux control unit 150 for the target laminate, the controller 200 can use the reflux control unit 150 to adjust the return oil flow rate of the hydraulic oil in the reflux delivery pipeline 110 corresponding to the target laminate, so as to accurately make the temperature difference between the target laminate and the adjacent laminate less than the preset temperature difference threshold.

[0088] In an exemplary embodiment, the reflux control unit 150 is a reflux control valve; the controller 200 is further configured to: adjust the opening of the reflux control valve according to the first temperature and the second temperature, so as to adjust the reflux oil flow rate of the hydraulic oil in the reflux delivery pipeline 110 corresponding to the target laminate.

[0089] Unlike control switches, which are in states of open and closed, control valves are automated actuators used to regulate the flow rate of fluid media, such as high-temperature control valves. Control valves have an opening degree, which refers to the extent to which the valve is open. This opening degree can range from 0% to 100%, and the greater the opening degree, the more hydraulic oil flows out of the valve.

[0090] Specifically, the return flow rate of hydraulic oil in the return delivery pipeline 110 corresponding to the target laminate can be adjusted by controlling the opening degree of the return control valve. Therefore, when the return control unit 150 is a return control valve, the controller 200 is also used to: adjust the opening degree of the return control valve according to the first temperature and the second temperature to accurately adjust the return flow rate of hydraulic oil in the return delivery pipeline 110 corresponding to the target laminate.

[0091] In the above embodiments, by setting a reflux control valve, the valve opening value can be 0-100%, instead of directly being open or closed. Therefore, by adjusting the opening of the reflux control valve, the return flow rate of hydraulic oil in the reflux delivery pipe 110 corresponding to the target laminate can be adjusted in a finer manner, avoiding all hydraulic oil flowing out of the reflux delivery pipe 110, thereby achieving precise temperature adjustment of the target laminate.

[0092] In one exemplary embodiment, the target laminate is at least one of an odd-numbered laminate and an even-numbered laminate.

[0093] Specifically, it should be noted that when adjusting the return flow rate of hydraulic oil in the return delivery pipeline 110 corresponding to the target laminate among multiple laminates, since the temperature difference between the target laminate and the adjacent laminates is less than the preset temperature difference threshold, after the temperature of the target laminate is adjusted, the temperature between it and the adjacent laminates can be considered to be uniformly distributed. At this time, the temperature between the laminates adjacent to the target laminate does not need to be adjusted again. Instead, the laminates adjacent to the adjacent laminates are used as the new target laminates, and the new target laminates are adjusted.

[0094] As can be seen, since odd-numbered laminates are adjacent to even-numbered laminates in multiple laminates, the target laminate can be set as an odd-numbered laminate or an even-numbered laminate. In addition, the target laminate can also be an odd-numbered laminate and an even-numbered laminate, that is, all laminates.

[0095] In practical applications, the target laminate is often an even number of laminates. It should be explained that the laminator 1000 usually has an even number of openings and an odd number of laminates. For example, if there are 12 openings and a total of 13 laminates, then there are 6 even-numbered laminates and 7 odd-numbered laminates. Therefore, setting the corresponding reflux control unit 150 on the even-numbered laminates can reduce the cost by one compared to setting the corresponding reflux control unit 150 on the odd-numbered laminates. Setting the reflux control unit 150 on the odd-numbered laminates or all laminates makes the control and cost more complex.

[0096] Taking the first, second, and third layers of laminate as an example:

[0097] When the target laminate is an even-numbered laminate, such as the second laminate, the temperatures of the first, second, and third laminates are obtained. Based on these temperatures, the return flow rate of hydraulic oil in the return delivery pipe 110 corresponding to the second laminate is adjusted to regulate the temperature of the second laminate. This ensures that the temperature difference between the second and first laminates, as well as the temperature difference between the second and third laminates, is less than a preset temperature difference threshold.

[0098] When the target laminate is an odd-numbered laminate, such as the first laminate, the temperature of the first laminate and the temperature of the second laminate are obtained. Based on the temperature of the first laminate and the temperature of the second laminate, the return flow rate of hydraulic oil in the return delivery pipe 110 corresponding to the first laminate is adjusted to adjust the temperature of the first laminate, so that the temperature difference between the temperature of the first laminate and the temperature of the second laminate is less than a preset temperature difference threshold.

[0099] In the above embodiments, after the temperature of the target laminate is adjusted, the temperature between it and the adjacent laminates can be considered to be uniformly distributed. At this time, the temperature between the laminates adjacent to the target laminate does not need to be adjusted again. Instead, the laminates adjacent to the adjacent laminates are used as new target laminates, and the new target laminates are adjusted. Since odd-numbered laminates are adjacent to even-numbered laminates in the multiple laminates, the target laminate can be set as at least one of odd-numbered laminates and even-numbered laminates to reduce the complexity of temperature control in the laminator 1000 and improve the efficiency of temperature control in the laminator 1000.

[0100] In one exemplary embodiment, adjacent laminates comprise one or two pieces, and the controller 200 is further configured to:

[0101] When there are two adjacent laminates, obtain the first initial temperature of each of the two adjacent laminates, and detect the second temperature based on the two first initial temperatures;

[0102] When adjacent laminates are a single unit, obtain the second initial temperature of the adjacent laminates, and detect the second temperature based on the second initial temperature;

[0103] Based on the error between the first temperature and the second temperature, adjust the return flow rate of hydraulic oil in the return delivery pipeline 110 corresponding to the target laminate.

[0104] Specifically, when the target laminate is the two outermost laminates, the adjacent laminates of the target laminate are one piece; when the target laminate is not the two outermost laminates, the adjacent laminates of the target laminate are two pieces.

[0105] When there are two adjacent laminates to the target laminate, firstly, the first initial temperature of each of the two adjacent laminates is obtained, and then a second temperature is detected based on the two first initial temperatures. Detecting the second temperature based on the two first initial temperatures includes: detecting the average temperature of the two first initial temperatures and using the average temperature as the second temperature.

[0106] When the adjacent laminates of the target laminate are one piece, firstly, the second initial temperature of the adjacent laminate is obtained, and then the second initial temperature is used as the second temperature.

[0107] Furthermore, after obtaining the second temperature of the adjacent laminate of the target laminate, the error between the first temperature and the second temperature is detected, and based on the error between the first temperature and the second temperature, return oil flow control information is generated and sent to the return control unit 150 corresponding to the target laminate. The return oil flow control information is used to adjust the return oil flow of hydraulic oil in the return delivery pipeline 110 corresponding to the target laminate.

[0108] Furthermore, based on the error between the first and second temperatures, the return oil flow control information can be generated using a PID algorithm. For example, taking a laminate with layers 1, 2, and 3 as an example: when the target laminate is layer 2, the temperature T1 of layer 1, the first temperature T2 of layer 2, and the temperature T3 of layer 3 are obtained. Based on the temperatures of layer 1 and layer 3, the second temperature is detected as (T1+T3) / 2, and then the error e(t) between the second temperature (T1+T3) / 2 and the first temperature T2 is detected. Finally, the error e(t) is processed using a PID algorithm to obtain the return oil flow control information U(t), the specific expression of which is: Wherein, Kp, Ki, and Kd are the coefficients of proportional p, integral i, and derivative d, respectively. The parameter values ​​are usually determined by the commissioning personnel based on the experience value test according to the site conditions. Finally, according to the return oil flow control information U(t), the return oil flow rate of the hydraulic oil in the return delivery pipeline 110 corresponding to the target laminate is adjusted.

[0109] When the return control unit 150 is a return control valve, the return oil flow control information U(t) can be regarded as the opening control information of the return control valve. For example, when the opening control information of the return control valve is 0-24V, the opening of the return control valve is 0-100%.

[0110] In the above embodiments, by determining the number of adjacent laminates of the target laminate, and then using different methods to detect the second temperature, and finally adjusting the return oil flow rate of the hydraulic oil in the return delivery pipe 110 corresponding to the target laminate based on the error between the second temperature and the first temperature, the temperature difference between the target laminate and its adjacent laminates is less than a preset temperature difference threshold. Furthermore, this application can also adjust the PID control parameters according to actual production conditions to ensure that the laminator can respond quickly and accurately to temperature changes, achieving precise temperature regulation.

[0111] In one exemplary embodiment, it is still as follows Figure 2 As shown, the laminator 1000 also includes:

[0112] The sealing module 300 includes a vacuum chamber 310, a first vacuum door 320, and a second vacuum door;

[0113] The vacuum chamber 310 is connected to the first surface of the lamination module 50, the first vacuum door 320 is disposed on the vacuum chamber 310, and the second vacuum door is disposed on the second surface of the lamination module 50 opposite to the first surface;

[0114] When the laminator 1000 is in operation, the first vacuum door 320 and the second vacuum door are closed, so that the lamination module 50 is in a sealed environment.

[0115] Specifically, this application also includes a sealing module 300, which is used to form a sealed cavity inside the laminator 1000. The sealing module 300 includes a vacuum chamber 310, a first vacuum door 320, and a second vacuum door. The vacuum chamber 310 is connected to a first surface of the laminator module 50. The first vacuum door 320 is disposed on the vacuum chamber 310, and the second vacuum door is disposed on a second surface of the laminator module 50 opposite to the first surface. The first vacuum door 320 and the second vacuum door are used to control whether a vacuum environment is formed inside the laminator 1000, so that the laminator module 50 used for workpiece processing is in a sealed environment. For example, the vacuum chamber 310 is connected to the rear side of the laminator module 50, the first vacuum door 320 is disposed on the vacuum chamber 310, and the second vacuum door is disposed on the front side of the laminator module 50.

[0116] When the first vacuum door 320 or the second vacuum door is opened, a sealed environment cannot be formed inside the laminator 1000. At this time, the laminator module 50 is not in a sealed environment. When the first vacuum door 320 and the second vacuum door are both closed, a sealed environment is formed inside the laminator 1000. At this time, the laminator module 50 is in a sealed environment.

[0117] More specifically, since the first vacuum door 320 is located on the vacuum chamber 310, when the first vacuum door 320 is opened, a sealed environment cannot be formed inside the vacuum chamber 310, meaning a sealed environment cannot be formed inside the laminator 1000 either. At this time, the laminator module 50 is not in a sealed environment. Since the second vacuum door is located on the laminator 1000, when the second vacuum door is opened, a sealed environment cannot be formed inside the laminator 1000 either. At this time, the laminator module 50 is not in a sealed environment. When the first vacuum door 320 and the second vacuum door are closed, the laminator 1000 is in a sealed environment, and at this time, the laminator module 50 is in a sealed environment.

[0118] In an exemplary embodiment, the vacuum chamber 310 being connected to the first surface of the lamination module 50 means that the vacuum chamber 310 is bolted to the first surface of the lamination module 50. If the laminator 1000 also has a support module, the vacuum chamber 310 is bolted to the support module near the first surface of the lamination module 50. The first vacuum door 320 being disposed on the vacuum chamber 310 means that the first vacuum door 320 is bolted to the vacuum chamber 310. The second vacuum door can also be bolted to the second surface of the lamination module.

[0119] In the above embodiments, by setting the sealing module 300, the first vacuum door 320 and the second vacuum door can be closed when the laminator 1000 is in operation, so that the laminator 50 is in a sealed environment.

[0120] In one exemplary embodiment, such as Figure 3 As shown, the oil return module 100 also includes:

[0121] The reflux oil collection unit 130 is installed inside the vacuum chamber 310 and is connected to multiple reflux conveying pipes 110;

[0122] Oil collection and conveying pipeline 140 is connected to the return oil collection unit 130;

[0123] When the laminator 1000 is in the oil return state, the hydraulic oil in the connecting channel of each laminate flows to the return oil collection unit through the corresponding connected return conveying pipe 110, and the hydraulic oil in the return oil collection unit flows out through the oil collection conveying pipe.

[0124] Specifically, this application also includes a return oil collection unit 130 and an oil collection and delivery pipe 140. Each return delivery pipe 110 corresponds to a laminate, with one end of the return delivery pipe 110 connected to a corresponding connecting channel in the laminate, and the other end connected to the return oil collection unit 130, which is located inside the vacuum chamber 310. In other words, the hydraulic oil returning from the connecting channel in each laminate flows to the same return oil collection unit 130 through its corresponding return delivery pipe 110.

[0125] Furthermore, one end of the oil collection and delivery pipe 140 is connected to the return oil collection unit 130, and the other end of the oil collection and delivery pipe 140 passes through the vacuum chamber 310 and is connected to an external return oil treatment unit, such as a boiler or other treatment unit, to allow the hydraulic oil returning from the connecting channels of the laminate to flow out of the laminator 1000 and to recycle the outflowing hydraulic oil. Therefore, when the laminator 1000 is in the return oil state, the flow direction of the hydraulic oil in the connecting channels of each laminate is: connecting channel in the laminate → return delivery pipe 110 → return oil collection unit 130 → oil collection and delivery pipe 140 → return oil treatment unit.

[0126] Furthermore, the hydraulic oil flowing to the return oil collection unit 130 is not all the hydraulic oil transported by the return delivery pipeline 110, but only a portion of the hydraulic oil under the control of the return control unit 150.

[0127] In the above embodiment, by setting up the return oil collection unit 130, the hydraulic oil returning through multiple return conveying pipes 110 can be collected in the return oil collection unit 130, and the collected hydraulic oil will be conveyed to the return oil processing unit 120 through the oil collection conveying pipe 140 for recycling.

[0128] In one exemplary embodiment, it is still as follows Figure 2 As shown, the sealing module 300 also includes:

[0129] A transfer sealing cover 330 for conveying pipes is provided on the outer surface of the vacuum chamber 310. The return conveying pipe 110 passes through the transfer sealing cover to divide the return conveying pipe 110 into a first return conveying pipe provided inside the vacuum chamber 310 and a second return conveying pipe provided outside the vacuum chamber 310. A return control unit 150 is provided on the second return conveying pipe.

[0130] The outer surface refers to the surface that comes into contact with the outside world.

[0131] Specifically, since the vacuum chamber 310 is connected to the laminate, the reflux control unit 150 is generally not installed inside the vacuum chamber 310. However, the reflux control unit 150 needs to be installed on the reflux conveying pipe 110. Therefore, part of the reflux conveying pipe 110 needs to be installed outside the vacuum chamber 310. To address this issue, this application provides a conveying pipe transition sealing cover 330 in the sealing module 300. Specifically, the conveying pipe transition sealing cover 330 also serves to provide a fixed installation location for the reflux control unit and part of the reflux conveying pipe.

[0132] The transfer pipe transition seal 330 is disposed on the surface of the vacuum chamber 310 that is in contact with the outside. The return transfer pipe 110 connected to the laminator passes through the transfer pipe transition seal from inside the laminator 1000 to outside the laminator 1000, and then passes through the transfer pipe transition seal from outside the laminator 1000 to inside the laminator 1000. Therefore, the return transfer pipe 110 at this time includes a first return transfer pipe disposed inside the vacuum chamber 310 and a second return transfer pipe disposed outside the vacuum chamber 310.

[0133] Furthermore, the transfer sealing cover of the conveying pipeline actually divides each return conveying pipeline 110 into three parts, that is, each return conveying pipeline 110 includes two first return conveying pipelines and one second return conveying pipeline. Specifically, the part of the return conveying pipeline inside the vacuum chamber 310 from the laminate to the transfer sealing cover of the conveying pipeline is regarded as a first return conveying pipeline, the part of the return conveying pipeline inside the vacuum chamber 310 from the transfer sealing cover of the conveying pipeline 330 to the return oil collection unit 130 is regarded as another first return conveying pipeline, and the part of the return conveying pipeline located outside the vacuum chamber 310 and set on the transfer sealing cover of the conveying pipeline is regarded as the second return conveying pipeline.

[0134] In practical applications, the second return pipeline can be welded to the transition seal of the pipeline to improve manufacturing convenience and prevent vacuum leakage gaps, thereby improving system reliability.

[0135] Furthermore, a reflux control unit 150 is installed on the second reflux conveying pipe. It should be explained that placing a portion of the reflux conveying pipe 110 outside the vacuum chamber 310 is to reserve space for the installation of the reflux control unit 150. By placing the reflux control unit 150 outside the vacuum chamber 310, on the one hand, the space occupied inside the vacuum chamber 310 can be reduced; on the other hand, since the laminator 1000 is connected to the vacuum chamber 310, the internal temperature will increase during the laminator 1000's pressing process. If the reflux control unit 150 were placed inside the vacuum chamber 310, it might be damaged.

[0136] In one embodiment, a sealing strip is also installed on the transfer pipe transition sealing cover 330 to further seal the vacuum chamber 310.

[0137] In the above embodiments, in order to set the reflux control unit 150 at an appropriate position on the reflux conveying pipe 110, this application can set a conveying pipe transition sealing cover 330, and the reflux conveying pipe 110 extends from the inside of the vacuum chamber 310 through the conveying pipe transition sealing cover to the outside, and then from the outside through the conveying pipe transition sealing cover to connect with the oil return and collection unit inside the vacuum chamber 310. At this time, a second reflux conveying pipe will be set outside the vacuum chamber 310, and the reflux control unit 150 will be set on the second reflux conveying pipe, which reduces the space occupied inside the vacuum chamber 310 and avoids the reflux control unit 150 from being damaged by high temperature.

[0138] In one exemplary embodiment, the sealing module 300 further includes:

[0139] The vacuum door control unit is connected to the first vacuum door 320 and is used to control the opening and closing of the first vacuum door 320.

[0140] Specifically, the vacuum door control unit is connected to the first vacuum door 320, and is used to control the opening and closing of the first vacuum door 320. In practical applications, the vacuum door control unit can be a hinge or handle, or other structure used to control the opening and closing of the vacuum door. Furthermore, when the laminator 1000 needs maintenance, the first vacuum door 320 can be opened through the vacuum door control unit to perform maintenance on the laminator 1000.

[0141] Taking the vacuum door control unit as a hinge as an example, one end of the hinge is fixed to the vacuum chamber 310 and the other end is fixed to the first vacuum door 320, so that the first vacuum door 320 can rotate around the hinge to open or close the first vacuum door 320.

[0142] In addition, the vacuum door control unit can also be connected to the second vacuum door. In this case, the vacuum door control unit is used to control the opening and closing of the second vacuum door. When the laminator 1000 needs maintenance, the second vacuum door can also be opened through the vacuum door control unit to perform maintenance on the laminator 1000.

[0143] In practical applications, it is generally more common to set the vacuum door control unit to be connected to the second vacuum door. This is because the second vacuum door is close to the return conveying pipe 110, and the space occupied by the return conveying pipe 110 is smaller than the space occupied by the lamination module 50. Therefore, opening the second vacuum door through the vacuum door control unit can more efficiently inspect the return conveying pipe 110 and the lamination module 50 compared to opening the first vacuum door 320 through the vacuum door control unit.

[0144] In the above embodiments, by setting a vacuum door control unit, the opening and closing of the first vacuum door 320 or the second vacuum door can be efficiently controlled, thereby efficiently controlling whether the vacuum chamber 310 and the lamination module 50 are in a sealed environment. Furthermore, by setting a vacuum door control unit, the return conveying pipe 110 and the lamination module 50 in the vacuum chamber 310 can also be efficiently inspected and maintained.

[0145] In one exemplary embodiment, the laminator 1000 further includes:

[0146] The support module includes a support plate disposed on the target surface of the lamination module 50. Multiple support plates are used to protect the lamination module 50. The target surface is a plurality of surfaces excluding the first surface and the second surface. The vacuum chamber 310 is connected to two support plates adjacent to the first surface of the lamination module 50.

[0147] Specifically, support plates disposed on multiple surfaces of the laminating module 50 constitute the main frame of the laminator 1000, and each support plate is bolted to the laminating module 50. The support plate on each target surface surrounds the laminating module 50 to protect it from damage by external factors. A vacuum chamber 310 is disposed on the first surface of the laminating module 50. The vacuum chamber 310 can also be connected to two adjacent support plates on the first surface, for example, by bolts, to lock the vacuum chamber 310 to the support module and prevent it from falling off.

[0148] Furthermore, the first surface of the laminating module 50 with the vacuum chamber 310 and the second surface with the second vacuum door do not require support plates to avoid obstructing the operation of the vacuum door. For example, the side with the vacuum chamber 310 can be used as the rear side of the laminating module 50, and the side with the second vacuum door can be used as the front side of the laminating module 50. In this case, the surface with multiple support plates can be the left surface, right surface, upper surface, and lower surface, and the corresponding support modules include a left side plate, a right side plate, an upper crossbeam, and a lower crossbeam. In the case where the vacuum chamber 310 is also provided in this application, the vacuum chamber 310 can be bolted to the left side plate and the right side plate to lock the vacuum chamber 310 to the support modules together and prevent the vacuum chamber 310 from falling off.

[0149] In the above embodiments, by setting a support module on the target surface of the laminating module 50, the laminating module 50 can be better protected and supported, and the first and second surfaces with vacuum chamber 310 do not need to be set with support plates, thus avoiding obstruction of the operation of the vacuum door; furthermore, the vacuum chamber 310 is set to be connected to two support plates adjacent to the first surface of the laminating module 50 respectively, so as to fix the vacuum chamber 310 and prevent it from falling.

[0150] In one exemplary embodiment, the laminator 1000 further includes:

[0151] The thrust module includes a movable platform and a hydraulic cylinder. The movable platform is connected to the lamination module 50, and the hydraulic cylinder passes through the support module and is connected to the movable platform. The hydraulic cylinder is used to drive the movable platform to provide pressing pressure to the lamination module 50.

[0152] Specifically, the hydraulic cylinder is connected to the movable platform inside the lamination module 50, and the movable platform is connected to the lamination module 50. More specifically, the movable platform is connected to the nearest lamination plate among multiple lamination plates. Further, the hydraulic cylinder is connected to the support module; for example, the flange of the hydraulic cylinder is connected to the lower crossbeam of the support module, allowing the hydraulic cylinder to pass through the support module and connect to the movable platform. The specific connection method can be a bolted connection. Since the movable platform can move up and down, the hydraulic cylinder can drive the movable platform to provide the lamination module 50 with the pressing pressure when pressing the workpiece.

[0153] In the above embodiments, by setting up a movable platform and a hydraulic cylinder, the lamination module 50 can be accurately provided with pressing pressure.

[0154] In one exemplary embodiment, the laminator 1000 further includes:

[0155] The temperature acquisition module includes a temperature sensor installed on each laminate, which is used to acquire the laminate temperature of each laminate.

[0156] Specifically, the controller 200 needs to adjust the return oil flow rate of the hydraulic oil in the return delivery pipeline 110 corresponding to the target laminate based on the first temperature of the target laminate and the second temperature of the adjacent laminates. Therefore, this application also needs to provide a temperature acquisition module, which includes a temperature sensor installed on each laminate. The temperature sensor is used to acquire the laminate temperature of the corresponding laminate. The temperature sensor can be installed on the side of each laminate closer to the return module. In practical applications, the temperature sensor can be a thermocouple or other device used to measure the temperature of the entire laminate.

[0157] In the above embodiments, by setting a temperature sensor in each laminate, the temperature of each laminate can be accurately obtained; furthermore, by monitoring the temperature of the target laminate in real time through the temperature sensor and feeding the data back to the controller, closed-loop control is achieved to ensure the real-time performance and accuracy of the temperature adjustment of the target laminate.

[0158] In one exemplary embodiment, the laminator 1000 further includes:

[0159] The oil inlet module includes an oil inlet pipe and multiple oil delivery pipes;

[0160] The oil inlet pipe is connected to multiple oil delivery pipes, and each oil delivery pipe corresponds to a laminate. The oil delivery pipe is connected to the corresponding laminate through a connecting channel.

[0161] When the laminator 1000 is in the oil inlet state, the hydraulic oil is distributed to multiple oil inlet delivery pipes through the oil inlet pipe. The hydraulic oil flows through each oil inlet delivery pipe to the corresponding connecting channel of the laminator, so that multiple laminators can use hydraulic oil to press the workpiece together.

[0162] Specifically, the oil inlet module refers to the module that inputs hydraulic oil into multiple laminators inside the laminator 1000. The oil inlet module includes an oil inlet pipe and multiple oil delivery pipes. The oil inlet pipe and the multiple oil delivery pipes are connected respectively, and the hydraulic oil to be delivered is distributed to the multiple oil delivery pipes through the oil inlet pipe. Each oil delivery pipe is connected one-to-one with a connecting channel in a different laminator. Therefore, the hydraulic oil in the multiple oil delivery pipes flows to the corresponding connecting channel in the laminator, so that multiple laminators use hydraulic oil to press the workpiece together.

[0163] Furthermore, when the hydraulic oil to be transported is distributed to multiple inlet delivery pipes through the inlet pipe, the hydraulic oil is evenly distributed to the multiple inlet delivery pipes so that the pressure of multiple laminates pressing the workpiece is uniform.

[0164] In the above embodiments, by setting an oil inlet module including an oil inlet pipe and multiple oil delivery pipes, hydraulic oil can be evenly distributed to each laminate, so that multiple laminates can use hydraulic oil to accurately and efficiently press the workpiece together.

[0165] In one exemplary embodiment, this application also provides a workpiece placed on multiple laminates in the aforementioned laminator 1000, the workpiece being processed by the laminator.

[0166] Specifically, the workpiece is placed on multiple laminating plates in the laminator 1000. When the hydraulic cylinder in the laminator 1000 drives the movable platform to press the workpiece on the multiple laminating plates, the workpiece can be processed. Further, the laminator 1000 is the same as the laminator 1000 in the above embodiment, and will not be described again here.

[0167] During the workpiece processing, when the laminator 1000 is in the oil return state, it can also accurately control the temperature of multiple laminates, solving the problem of uneven thickness caused by uneven temperature during workpiece processing. Therefore, the workpiece processing accuracy improves with the accuracy of temperature control.

[0168] In the above embodiments, by placing the workpiece on multiple laminates in the laminator 1000, the problem of uneven thickness caused by uneven temperature during workpiece processing can be solved, thereby improving the accuracy of workpiece processing.

[0169] In an exemplary embodiment, taking a PCB board as an example, existing laminators often include a lamination module 50, which includes multiple lamination plates. These multiple lamination plates are used to press the PCB board together. By controlling the temperature of the lamination module 50, the temperature among the multiple lamination plates is evenly distributed, thereby enabling the laminator to process the PCB board more accurately and efficiently, avoiding the problem of uneven thickness of the PCB board during processing due to uneven temperature among the multiple lamination plates.

[0170] Since a single perspective cannot fully describe the structure of a laminator, this application describes the laminator in detail from multiple perspectives, such as... Figure 4 The image shown is a rear view of the laminator. Figure 5 The image shown is a side view of the laminator; the oblique view of the laminator remains the same. Figure 2 As shown, Figure 6 The diagram shows the distribution of the return flow pipeline 110 inside the laminator, which includes:

[0171] 1. Support module, including four support plates: left side plate 10, right side plate 20, lower crossbeam 30 and upper crossbeam 40. Each support plate is locked to the lamination module 50 with bolts to protect the internal structure of the laminator. The multiple lamination plates include at least one odd-numbered lamination plate 52 and at least one even-numbered lamination plate 54.

[0172] II. Sealing module 300, including vacuum chamber 310, first vacuum door 320 (rear vacuum door 320), conveying pipeline transition sealing cover 330 (oil pipe transition sealing cover 330), second vacuum door 340 (front vacuum door 340) and vacuum door control unit 3 (hinge 3).

[0173] The vacuum chamber 310 is located at the rear of the laminating module 50 and is bolted to the left side plate 10 and the right side plate 20 respectively. The rear vacuum door 320 is located at the rear of the vacuum chamber 310 and is bolted to it. The front vacuum door 340 is located at the front of the laminating module 50. When the laminator is in operation, the first vacuum door 320 and the second vacuum door 340 are closed, creating a sealed environment for processing the workpieces within the laminating module 50.

[0174] The oil pipe adapter sealing cover 330 is installed in the vacuum chamber 310. One side of the hinge 3 is fixed to the vacuum chamber 310, and the other side of the hinge 3 is fixed to the side plate of the rear vacuum door 320. The rear vacuum door 320 can rotate around the hinge. When the laminator needs maintenance, the rear vacuum door 320 can be opened.

[0175] 3. The oil return module includes multiple return delivery pipes 110, a return oil collection unit 130 (return oil collector 130), an oil collection and delivery pipe 140, and a return control valve 1 corresponding to each target laminate. Hydraulic oil flows out of the laminator through the multiple return delivery pipes 110, the return oil collector 130, the oil collection and delivery pipe 140, and the return control valve 1 corresponding to each target laminate.

[0176] In addition, each laminate in this application is provided with at least one connecting channel.

[0177] Each return transport pipe 110 corresponds to a laminate, and the return transport pipe 110 is connected to the corresponding laminate through a connecting channel. The return transport pipe 110 extends to the outside through the oil pipe transition sealing cover 330, dividing the return transport pipe 110 into an internal return transport pipe 112 located inside the vacuum chamber 310 and an external return transport pipe 114 located outside the vacuum chamber 310. A return control valve 1 is installed on the external return transport pipe 114.

[0178] Therefore, each reflux control valve 1 is located outside the vacuum chamber 310 and on the external reflux delivery pipe 114 corresponding to the target laminate; the reflux oil collector 130 is located inside the vacuum chamber 310 and is connected to multiple reflux delivery pipes 110; one end of the oil collection and delivery pipe 140 is connected to the reflux oil collector 130, and the other end of the oil collection and delivery pipe 140 is connected to the oil return processing unit.

[0179] When the laminator is in the oil return state, for a certain target laminate, the hydraulic oil returning from the target laminate first flows to the oil return collector 130 through the return delivery pipe 110. During this process, the return flow rate of the hydraulic oil in the return delivery pipe 110 corresponding to the target laminate is controlled by the opening degree of the return control valve 1. The hydraulic oil collected in the oil return collector 130 can also flow to the external oil return processing unit 120 through the oil collection and delivery pipe 140 for recycling.

[0180] IV. Oil inlet module, including oil inlet pipe 410 and multiple oil inlet conveying pipes;

[0181] The oil inlet pipe 410 is connected to multiple oil inlet delivery pipes, each corresponding to a laminate. The oil inlet delivery pipe is connected to the corresponding laminate's connecting channel. Hydraulic oil is distributed to multiple oil inlet delivery pipes through the oil inlet pipe 410, and then flows to the corresponding connected laminate through each oil inlet delivery pipe, so that multiple laminates can use hydraulic oil to press the workpiece together.

[0182] 5. Temperature acquisition module, including thermocouples disposed on the rear side of each laminate, including even-numbered layer thermocouples 510 of even-numbered laminates 54 and odd-numbered layer thermocouples 520 of odd-numbered laminates 52, each thermocouple being used to acquire the laminate temperature of each laminate.

[0183] VI. Controller: Sets the target laminate to an even-numbered laminate 54. When the laminator is in the oil return state, the controller is used to:

[0184] Step 1: Temperature monitoring. Obtain the first temperature transmitted by the even-numbered layer thermocouple 510 corresponding to the even-numbered layer laminate 54, and the second temperature transmitted by the odd-numbered layer thermocouple 520 corresponding to the odd-numbered layer laminate 52 adjacent to the even-numbered layer laminate 54.

[0185] Step 2: Error Detection. Obtain the error between the first temperature and the second temperature.

[0186] Step 3: PID control calculation. For example... Figure 7 As shown, the opening of the reflux control valve 1 is adjusted according to the error between the first temperature and the second temperature.

[0187] Taking the first, second, and third layers of laminates as an example: The temperature T1 of the first layer laminate, the first temperature T2 of the second layer, and the temperature T3 of the third layer laminate are obtained. Based on the temperatures of the first and third layers, the second temperature is calculated as (T1+T3) / 2. Then, the error e(t) between the second temperature (T1+T3) / 2 and the first temperature T2 is measured. The error e(t) is processed using a PID algorithm to obtain the return oil flow control information. Among them, the return oil flow control information U(t) can be regarded as the opening control information of the return control valve 1. For example, when the opening control information of the return control valve 1 is 0-24V, the corresponding opening of the return control valve 1 is 0-100%, K p K i K d These are the coefficients of the proportional (p), integral (i), and derivative (d), respectively. The parameter values ​​are usually determined by the commissioning personnel based on experience and on-site conditions.

[0188] Step 4: Control valve adjustment. Based on the return oil flow control information U(t), control the opening degree of the return control valve 1 corresponding to the even-numbered layer laminate, thereby adjusting the return oil flow in the return delivery pipeline 110 corresponding to the even-numbered layer laminate 54 to adjust the temperature corresponding to the even-numbered layer laminate 54.

[0189] Step 5: By adjusting the temperature of all even-numbered laminar flow plates 54, so that they follow the temperature changes of the adjacent odd-numbered laminar flow plates 52, the temperature of the multi-layer hot press plates in the entire laminator can be uniformly adjusted.

[0190] In addition, the laminator also includes a thrust module, which includes a hydraulic cylinder 610 and a movable platform 620. Taking the hydraulic cylinder 610 located at the lower part of the laminator module 50 as an example, the upper end of the hydraulic cylinder 610 is connected to the movable platform 620 inside the laminator cavity. The flange part of the hydraulic cylinder 610 is fixed to the lower crossbeam 30 with bolts. The hydraulic cylinder 610 can provide the required thrust to the laminator module 50 so as to accurately process the PCB boards placed on the multiple laminators while achieving uniform temperature adjustment of the multiple laminators in the entire laminator, so that the thickness of the PCB boards after processing is uniform.

[0191] By configuring the aforementioned laminator, this application offers the following beneficial effects:

[0192] 1. Improve temperature uniformity: By adjusting the temperature of the target laminate to follow the temperature changes of the adjacent laminates, the temperature difference between laminates and laminated materials in different locations is effectively reduced, thus improving temperature uniformity.

[0193] 2. Improved product quality: Increased temperature uniformity results in more consistent cross-linking and curing reaction times for the laminated materials, and a more uniform adhesive flow distribution, thereby reducing uneven thickness of the PCB board and improving product quality.

[0194] 3. Enhanced production stability: This laminator can automatically adjust the temperature of multiple laminators according to actual conditions, enhancing the stability of the production process and reducing the risk of production abnormalities caused by temperature fluctuations.

[0195] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0196] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0197] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A laminator, characterized in that, The laminator includes: A lamination module includes multiple laminates, each of which has at least one communicating channel; The oil return module includes multiple return conveying pipes, each of which corresponds to a laminate and is connected to a communication channel of the corresponding laminate. When the laminator is in the oil return state, the hydraulic oil in the connecting channel of each laminate flows out through the corresponding connected return delivery pipe; Controller, the controller is used for: When the laminator is in the oil return state, for each target laminate, the first temperature of the target laminate and the second temperature of the adjacent laminate of the target laminate are obtained, wherein the target laminate is the laminate to be temperature regulated among the multiple laminates; Based on the first temperature and the second temperature, the return flow rate of the hydraulic oil in the return delivery pipeline corresponding to the target laminate is adjusted so that the temperature difference between the target laminate and the adjacent laminate is less than a preset temperature difference threshold.

2. The laminator according to claim 1, characterized in that, The oil return module also includes: Multiple reflux control units are provided, each of which corresponds one-to-one with the reflux delivery pipeline corresponding to the target laminate. The reflux control unit is installed on the corresponding reflux delivery pipeline and is used to control the reflux flow rate of the hydraulic oil in the reflux delivery pipeline corresponding to the target laminate.

3. The laminator according to claim 2, characterized in that, The reflux control unit is a reflux control valve; The controller is also used for: Based on the first temperature and the second temperature, the opening of the reflux control valve is adjusted to regulate the return flow rate of the hydraulic oil in the reflux delivery pipeline corresponding to the target laminate.

4. The laminator according to claim 1, characterized in that, The target laminate is at least one of odd-numbered laminates and even-numbered laminates.

5. The laminator according to claim 1, characterized in that, The adjacent laminates include one or two, and the controller is further configured to: When there are two adjacent laminates, the first initial temperature of each of the two adjacent laminates is obtained, and a second temperature is detected based on the two first initial temperatures; When the adjacent laminates are a single piece, a second initial temperature of the adjacent laminates is obtained, and a second temperature is detected based on the second initial temperature; Based on the error between the first temperature and the second temperature, the return flow rate of the hydraulic oil in the return delivery pipeline corresponding to the target laminate is adjusted.

6. The laminator according to claim 2, characterized in that, The laminator also includes: The sealing module includes a vacuum chamber, a first vacuum door, and a second vacuum door; The vacuum chamber is connected to the first surface of the lamination module, the first vacuum door is disposed on the vacuum chamber, and the second vacuum door is disposed on the second surface of the lamination module opposite to the first surface; When the laminator is in operation, the first vacuum door and the second vacuum door are closed, so that the lamination module is in a sealed environment.

7. The laminator according to claim 6, characterized in that, The oil return module also includes: The reflux oil collection unit is located inside the vacuum chamber and is connected to the plurality of reflux conveying pipes; An oil collection and conveying pipeline, wherein the oil collection and conveying pipeline is connected to the return oil collection unit; When the laminator is in the oil return state, the hydraulic oil in the connecting channel of each laminate flows to the oil return collection unit through the corresponding connected return delivery pipe, and the hydraulic oil in the oil return collection unit flows out through the oil collection delivery pipe.

8. The laminator according to claim 7, characterized in that, The sealing module further includes: A transfer sealing cover for the conveying pipeline is disposed on the outer surface of the vacuum chamber. The return conveying pipeline passes through the transfer sealing cover to divide the return conveying pipeline into a first return conveying pipeline disposed inside the vacuum chamber and a second return conveying pipeline disposed outside the vacuum chamber. The return control unit is disposed on the second return conveying pipeline.

9. The laminator according to claim 6, characterized in that, The sealing module further includes: A vacuum door control unit is connected to the first vacuum door and is used to control the opening and closing of the first vacuum door.

10. The laminator according to claim 6, characterized in that, The laminator also includes: A support module includes a support plate disposed on the target surface of the laminating module, and a plurality of the support plates are used to protect the laminating module, wherein the target surface is a plurality of surfaces excluding both the first surface and the second surface; The vacuum chamber is connected to two support plates adjacent to the first surface of the lamination module.

11. The laminator according to claim 10, characterized in that, The laminator also includes: The thrust module includes a movable platform and a hydraulic cylinder. The movable platform is connected to the lamination module, and the hydraulic cylinder passes through the support module and is connected to the movable platform. The hydraulic cylinder is used to drive the movable platform to provide pressing pressure to the lamination module.

12. The laminator according to claim 1, characterized in that, The laminator also includes: The temperature acquisition module includes a temperature sensor disposed on each of the laminates, the temperature sensor being used to acquire the laminate temperature of each of the laminates.

13. The laminator according to claim 1, characterized in that, The laminator also includes: The oil inlet module includes an oil inlet pipe and multiple oil delivery pipes; The oil inlet pipe is connected to the plurality of oil inlet conveying pipes respectively, and each oil inlet conveying pipe corresponds to one of the laminates. The oil inlet conveying pipe is connected to the corresponding laminate through a connecting channel. When the laminator is in the oil inlet state, the hydraulic oil is distributed to the plurality of oil inlet delivery pipes through the oil inlet pipes. The hydraulic oil flows to the corresponding connecting channel of the laminator through each of the oil inlet delivery pipes, so that the plurality of laminators use the hydraulic oil to press the workpiece together.

14. A workpiece, characterized in that, The workpiece is placed on multiple laminating plates in a laminator as described in any one of claims 1-13, and the workpiece is processed by the laminator.

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