Pressure maintaining control method and device, pressure maintaining equipment and storage medium

Abstract

The application discloses a pressure maintaining control method and device, a pressure maintaining equipment and a storage medium. The pressure maintaining control method is applied to a pressure head assembly and specifically comprises the following steps: driving a pressure head body to move in a direction close to a pressure maintaining part through a main pressure driving device, and detecting through a corner pressure sensing device; if the abutting pressure of each corner pressure sensing device reaches a preset pressure threshold value within a first preset time period, the main pressure driving device is turned off, and a normal pressure maintaining prompt operation is performed; if the abutting pressure of any one or more corner pressure sensing devices does not reach the preset pressure threshold value within the first preset time period, the main pressure driving device is turned off, and a secondary pressure operation is performed through a corresponding secondary pressure driving device. The pressure maintaining control method can solve the technical problem that the current pressure maintaining operation may cause uneven pressure maintaining intensity in different regions and cannot meet the pressure maintaining demand of high-precision products.

Description

Technical Field

[0001] This invention relates to the field of pressure holding device technology, and in particular to a pressure holding control method, pressure holding control device, pressure holding equipment, and computer-readable storage medium. Background Technology

[0002] During the assembly of some products, pressure holding is required for components to ensure they adhere firmly to their corresponding carrier parts. For example, after the glass back cover and the middle plate of a mobile phone are bonded together with hot melt adhesive film, pressure needs to be applied to the glass back cover to allow the hot melt adhesive film to fully extend and achieve a firm bond between the glass back cover and the middle plate.

[0003] Currently, the pressure holding operation of some products has begun to be carried out using automated equipment. However, due to factors such as the accuracy of the positioning fixture, the horizontality of the part to be pressure held, and the orientation and size of the pressure holding head, uneven pressure holding intensity may occur in different areas, which may not meet the pressure holding requirements of high-precision products, thus making it difficult to guarantee product quality. Summary of the Invention

[0004] The main objective of this invention is to provide a pressure holding control method that aims to solve the technical problem that current pressure holding operations may result in uneven pressure holding intensity in different areas, which fails to meet the pressure holding requirements of high-precision products.

[0005] To achieve the above objectives, the present invention provides a pressure holding control method applied to a pressure head assembly, the pressure holding control method comprising the following steps: The main pressure drive device drives the pressure head body to move in the direction close to the part to be protected, and the detection operation is performed by the corner pressure sensor. Each corner of the pressure head body is provided with a corner pressure sensor, and the detection operation is to detect the contact pressure between the corresponding corner and the part to be protected. If the contact pressure of each of the aforementioned corner pressure sensing devices reaches the preset pressure threshold within the first preset time period, then the main pressure drive device is turned off, and a normal pressure holding prompt operation is performed. If the contact pressure of any one or more of the corner pressure sensing devices does not reach the preset pressure threshold within the first preset time period, the main pressure drive device is turned off, and an auxiliary pressure operation is performed by the corresponding auxiliary pressure drive device. The pressure head body is connected to the main pressure drive device by a flexible hinge, and the auxiliary pressure drive device is set one-to-one with the corner. The auxiliary pressure operation is to drive the corresponding corner to move in the direction close to the pressure member to be protected.

[0006] Furthermore, the pressure head body has four corner portions, and the cross-section of the pressure head body is rectangular; The step of performing the auxiliary pressure operation through the corresponding auxiliary pressure driving device includes: The number and relative position of the first sensing device are obtained; wherein, the pressure head body has four corner portions, and each corner pressure sensing device is respectively disposed at the four corner portions; the first sensing device is the corner pressure sensing device whose contact pressure does not reach the preset pressure threshold within the first preset time period. If there is only one first sensing device, then perform a pressure head abnormality prompt operation; If there are two first sensing devices, and the two first sensing devices are arranged diagonally, then an abnormal pressure head prompt operation will be executed. If there are two first sensing devices, and the two first sensing devices are arranged adjacent to each other, then the auxiliary pressure operation is performed by the auxiliary pressure driving device corresponding to the first sensing device. If there are three first sensing devices, the auxiliary pressure operation is performed by the auxiliary pressure driving device corresponding to the first sensing device.

[0007] Further, if there are two first sensing devices, and the two first sensing devices are arranged adjacent to each other, then after the step of performing the auxiliary pressure operation through the auxiliary pressure driving device corresponding to the first sensing device, the method includes: If the contact pressure of each of the first sensing devices reaches the preset pressure threshold within the second preset time period, the auxiliary pressure driving device is turned off, and a normal pressure holding prompt operation is performed. If the contact pressure of one of the first sensing devices does not reach the preset pressure threshold within the second preset time period, the auxiliary pressure drive device is turned off, and an abnormal pressure head prompt operation is executed. If the contact pressure of two of the first sensing devices does not reach the preset pressure threshold within the second preset time period, the auxiliary pressure driving device is turned off, and an auxiliary pressure abnormality prompt operation is executed.

[0008] Furthermore, if there are three first sensing devices, then after the step of performing the auxiliary pressure operation through the auxiliary pressure driving device corresponding to the first sensing device, the process includes: If the contact pressure of each of the first sensing devices reaches the preset pressure threshold within the third preset time period, the auxiliary pressure driving device is turned off, and a normal pressure holding prompt operation is performed. If the contact pressure of any one or more of the first sensing devices does not reach the preset pressure threshold within the third preset time period, then the number and relative position of the second sensing devices are obtained; wherein, the second sensing device is the first sensing device whose contact pressure does not reach the preset pressure threshold within the third preset time period. If there is only one second sensing device, then the auxiliary pressure driving device is turned off, and an abnormal pressure head prompt operation is performed; If there are two second sensing devices, and the two second sensing devices are arranged diagonally, then the auxiliary pressure drive device is turned off, and an abnormal pressure head prompt operation is performed. If there are two second sensing devices, and the two second sensing devices are arranged adjacent to each other, then the auxiliary pressure operation continues through the auxiliary pressure driving device corresponding to the second sensing device, and the other auxiliary pressure driving devices are turned off. If there are three second sensing devices, then the auxiliary pressure drive device is turned off, and an auxiliary pressure abnormality prompt operation is performed.

[0009] Further, after the step of continuing the auxiliary pressure operation via the auxiliary pressure driving device corresponding to the second sensing device, the procedure includes: If the contact pressure of each of the second sensing devices reaches the preset pressure threshold within the fourth preset time period, the auxiliary pressure driving device is turned off, and a normal pressure holding prompt operation is performed. If the contact pressure of one of the second sensing devices does not reach the preset pressure threshold within the fourth preset time period, the auxiliary pressure drive device is turned off, and an abnormal pressure head prompt operation is executed. If the contact pressure of two of the second sensing devices does not reach the preset pressure threshold within the fourth preset time period, the auxiliary pressure drive device is turned off, and an auxiliary pressure abnormality prompt operation is executed.

[0010] Further, after the step of shutting down the main pressure drive device if the contact pressure of each of the corner pressure sensing devices reaches a preset pressure threshold within a first preset time period, the following steps are included: The contact pressure between the centroid of the pressure head body and the pressure component to be protected is detected by the central pressure sensing device; wherein, the central pressure sensing device is located at the centroid of the pressure head body. If the contact pressure between the centroid of the pressure head body and the pressure component to be maintained reaches the preset pressure threshold, then a normal pressure maintenance prompt operation is performed. If the contact pressure between the centroid of the pressure head body and the pressure component to be protected does not reach the preset pressure threshold, an abnormal pressure head prompt operation will be executed.

[0011] Further, the step of driving the pressure head body to move along the direction closer to the pressure member to be protected by the main pressure driving device, and performing the detection operation by the corner pressure sensing device, includes: The main pressure drive device drives the pressure head body to move in a direction close to the pressure component to be protected at a first speed. When the distance between the pressure head body and the pressure component to be protected is less than a preset distance threshold, the main pressure driving device drives the pressure head body to move in a direction closer to the pressure component to be protected at a second speed, and the detection operation is performed by the corner pressure sensing device; wherein, the second speed is less than the first speed.

[0012] Correspondingly, the present invention also proposes a pressure holding control device, the pressure holding control device comprising: The drive module is used to drive the pressure head body to move in the direction close to the pressure object through the main pressure drive device; The detection module is used for detection operations via corner pressure sensors; The prompting module is used to shut down the main pressure drive device and perform a normal pressure holding prompt operation if the contact pressure of each of the corner pressure sensing devices reaches a preset pressure threshold within a first preset time period. The auxiliary pressure module is used to shut down the main pressure drive device and perform auxiliary pressure operation through the corresponding auxiliary pressure drive device if the contact pressure of any one or more of the corner pressure sensing devices does not reach the preset pressure threshold within the first preset time period.

[0013] Correspondingly, the present invention also proposes a pressure holding device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the steps of the pressure holding control method as described above.

[0014] Correspondingly, the present invention also proposes a computer-readable storage medium storing a pressure holding control program, which, when executed by a processor, implements the steps of the aforementioned pressure holding control method.

[0015] The pressure holding control method provided by this invention, when the main pressure driving device drives the pressure head body to press down until it contacts the part to be pressured, continuously acquires the contact pressure of each corner of the pressure head body through the corner pressure sensing device; when the contact pressure of all corner pressure sensing devices reaches the preset pressure threshold within a first preset time period, it can be determined that the pressure in all parts of the pressing area tends to be uniform, and the part to be pressured is uniformly pressed. At this time, the operator is reminded through normal pressure holding prompt operation that the pressure holding requirement has been met; if the contact pressure of some corners does not reach the preset pressure within the first preset time period... The threshold value indicates that the pressure-holding component may be unevenly placed or the pressing direction may be deviated, requiring adjustment of the pressing method. In this case, the main pressure drive device stops pressing down the entire pressure head body to prevent further increase in the contact pressure at the corners that have already reached the preset pressure threshold, which could damage the component. Simultaneously, the auxiliary pressure drive device corresponding to the corners that have not reached the preset pressure threshold is activated. This auxiliary device pushes the corresponding corners to deflect at a certain angle around the flexible hinge, pressing them down until the contact pressure at the corresponding corners reaches the preset pressure threshold. Based on this method, the pressure intensity of each pressing area of ​​the component can be made more uniform without damaging it. It can adapt to situations where the component is not perfectly level or the pressing direction is deviated, providing a certain degree of fault tolerance. This meets the pressure-holding requirements of high-precision products and improves product quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pressure holding device structure corresponding to an embodiment of the pressure holding control method of the present invention; Figure 2 This is a schematic diagram of the pressure holding device structure corresponding to another embodiment of the pressure holding control method of the present invention; Figure 3 This is a flowchart illustrating an embodiment of the pressure holding control method of the present invention; Figure 4 This is a flowchart illustrating an embodiment of the auxiliary pressure operation method of the present invention using a corresponding auxiliary pressure driving device. Figure 5 This is a flowchart illustrating an embodiment of the method for performing auxiliary pressure operation using an auxiliary pressure driving device corresponding to the first sensing device according to the present invention. Figure 6 This is a flowchart illustrating another embodiment of the method for performing auxiliary pressure operation using an auxiliary pressure driving device corresponding to the first sensing device according to the present invention. Figure 7 This is a flowchart illustrating an embodiment of the method for performing auxiliary pressure operation using an auxiliary pressure driving device corresponding to the second sensing device according to the present invention. Figure 8 This is a flowchart illustrating an embodiment of the present invention, which uses a central pressure sensing device to detect the contact pressure at the center position of the pressure head body and to determine abnormalities. Figure 9 This is a flowchart illustrating an embodiment of the method of the present invention for driving the pressure head body to move along the direction close to the pressure member to be protected by a main pressure driving device; Figure 10 This is a schematic diagram of an embodiment of the pressure holding control device of the present invention; Figure 11 is a schematic diagram of the system structure of the hardware operating environment involved in the embodiment of the present invention.

[0017] Explanation of icon numbers: 1 Indenter body 4 Flexible hinge 2 Main pressure drive unit 11 Corner pressure sensing device 3 Auxiliary pressure drive device 12 Central pressure sensing device The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0021] Referring to Figure 11, which is a schematic diagram of the pressure holding device structure of the hardware operating environment involved in the embodiment of the present invention.

[0022] As shown in Figure 11, the pressure-holding device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 1005 may be a high-speed random access memory (RAM) or a stable non-volatile memory (NVM), such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0023] Those skilled in the art will understand that the structure shown in FIG11 does not constitute a limitation on the pressure holding device, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0024] As shown in Figure 11, the memory 1005, which serves as a storage medium, may include an operating system, a data storage module, a network communication module, a user interface module, and a pressure holding control program.

[0025] In the pressure-holding device shown in Figure 11, the network interface 1004 is mainly used to connect to the backend server and communicate data with the backend server; the user interface 1003 is mainly used to connect to the client (user end) and communicate data with the client; and the processor 1001 can be used to call the pressure-holding control program stored in the memory 1005 and execute the operations in the pressure-holding control method in any of the following embodiments.

[0026] Reference Figure 1 and Figure 3This invention provides a pressure-holding control method applied to a pressure head assembly. The pressure head assembly includes a pressure head body 1, a main pressure driving device 2, and an auxiliary pressure driving device 3. The pressure head body 1 is connected to the main pressure driving device 2 via a flexible hinge 4. Each corner of the pressure head body 1 is provided with a corner pressure sensor 11, which is used to perform a detection operation, namely, detecting the contact pressure between the corresponding corner and the part to be pressured. The auxiliary pressure driving device 3 is provided with each corner, and each auxiliary pressure driving device 3 is used to perform an auxiliary pressure operation, namely, driving the corresponding corner to move in a direction closer to the part to be pressured.

[0027] The pressure holding control method includes the following steps: S1, the main pressure drive device 2 drives the pressure head body 1 to move in the direction close to the part to be pressed, and the corner pressure sensor 11 performs detection operation; wherein, the part to be pressed can be any device that needs to be firmly attached through the pressure holding operation, such as the mobile phone glass back cover attached to the middle plate by hot melt adhesive film. S2, if the contact pressure of each corner pressure sensor 11 reaches the preset pressure threshold within the first preset time period, then the main pressure drive device 2 is turned off and a normal pressure holding prompt operation is performed. S3, if the contact pressure of any one or more corner pressure sensing devices 11 does not reach the preset pressure threshold within the first preset time period, then the main pressure drive device 2 is turned off, and the auxiliary pressure operation is performed through the corresponding auxiliary pressure drive device 3.

[0028] In this embodiment, the flexible hinge 4 allows the pressure head body 1 to have a certain margin of movement relative to the main pressure driving device 2. Therefore, when the main pressure driving device 2 drives the pressure head body 1 to press down and contact the workpiece to be protected, even if the pressing surface of the pressure head body 1 is not completely parallel to the pressed surface of the workpiece due to uneven placement of the workpiece or deviation in the pressing direction, as the pressure head body 1 continues to press down, it can still deflect at a certain angle using the point of initial contact with the workpiece as a fulcrum under the action of the flexible hinge 4. This achieves a certain degree of correction, allowing the pressure head body 1 to ultimately completely fit with the pressure-holding area of ​​the workpiece and complete the pressure-holding action. Compared to a rigid connection, this method has a higher fault tolerance. Specifically, the flexible hinge 4 can include any elastic element and combinations of elastic elements, which are not limited here.

[0029] The main pressure drive device 2 and the auxiliary pressure drive device 3 can specifically adopt a servo drive device, such as a servo motor and its matching transmission mechanism, servo cylinder, etc. The auxiliary pressure drive device 3 can be fixedly installed above the pressure head body 1, or it can be... Figure 1The auxiliary pressure drive device 3 is connected to the main pressure drive device 2 and moves synchronously with the pressure head body 1 under the drive of the main pressure drive device 2. When the main pressure drive device 2 stops driving, each auxiliary pressure drive device 3 can drive the corresponding corner of the pressure head body 1 independently to push the corresponding corner to deflect at a certain angle around the flexible hinge 4 to achieve downward pressure. In this way, the abutment pressure of other corners can be increased independently without moving the pressure head body 1 as a whole and without increasing the abutment pressure of the corners that have already been pressed in place. Finally, all corners are pressed in place, so that the abutment pressure of each corner meets the pressure holding requirements. At the same time, it can avoid damage to the pressure holding component due to excessive abutment pressure of any corner.

[0030] The core component of the corner pressure sensing device 11 is a pressure strain gauge, i.e., a pressure-sensitive resistor. When external pressure is applied to the corner pressure sensing device 11, the pressure strain gauge is compressed and deformed, thereby generating an electrical signal. The pressure controller in the corner pressure sensing device 11 can acquire this electrical signal at a frequency of 200Hz. After processing by the controller, it is converted into a voltage signal of 0~10V and transmitted to the analog signal acquisition card of the computer. The host computer software can read the voltage value of the acquisition card in real time and convert it according to the pressure value of 0~10V corresponding to the corner pressure sensing device 110~300kg, converting the voltage signal into a specific pressure value, thereby realizing real-time pressure data acquisition.

[0031] In the specific implementation process, when the pressure head body 1 is pressed down to contact the part to be pressed, the corner pressure sensing device 11 continuously acquires the contact pressure of each corner of the pressure head body 1. When the contact pressure of all corner pressure sensing devices 11 reaches the preset pressure threshold within the first preset time period, it can be determined that the pressure in all parts of the pressing area tends to be consistent, and the part to be pressed is uniformly pressed. At this time, the operator is reminded through normal pressure holding prompt operation that the pressure holding requirement has been met. The first preset time period can be started from the node where the first corner reaches the preset pressure threshold. The specific duration can be flexibly set according to the pressure holding requirements. Since it is usually difficult to achieve that all corners reach the preset pressure threshold at the same time in actual applications, a certain time margin can be reserved for the determination of contact pressure by setting the first preset time period. The preset pressure threshold can be set to a specific pressure value, such as 30 kg, or it can be set to a pressure value range according to the pressure holding requirements.

[0032] If, within the first preset time period, the contact pressure at some corners fails to reach the preset pressure threshold, it can be determined that the component to be pressed may be unevenly placed or the pressing direction may be deviated. In this case, the pressing method needs adjustment. The main pressure drive device 2 stops driving the pressure head body 1 downwards as a whole to prevent the contact pressure at the corners that have already reached the preset pressure threshold from continuing to increase and causing damage to the component. Simultaneously, the auxiliary pressure drive device 3 corresponding to the corners that have not reached the preset pressure threshold can be activated. The auxiliary pressure drive device 3 pushes the corresponding corner to deflect at a certain angle around the flexible hinge 4 and press down until the contact pressure at the corresponding corner reaches the preset pressure threshold. Based on this method, the pressure intensity of each pressing area of ​​the component to be pressed can be made more uniform without damaging the component. It can adapt to situations such as uneven placement of the component and deviations in the pressing direction, and has a certain degree of fault tolerance, thereby meeting the pressure holding requirements of high-precision products and improving product quality.

[0033] The following describes a practical application scenario where the cross-section of the pressure head body 1 is rectangular and the pressure head body 1 has four corners (i.e.) Figure 1 (As shown), the cooperation relationship of each auxiliary pressure driving device 3 and the abnormal judgment method in the pressing process are explained in detail.

[0034] Optionally, refer to Figure 1 and Figure 4 In step S3, the auxiliary pressure operation is performed by the corresponding auxiliary pressure driving device 3, specifically including: S31, obtain the number and relative position of the first sensing device; wherein, the first sensing device is the corner pressure sensing device 11 whose contact pressure does not reach the preset pressure threshold within the first preset time period.

[0035] S32, if there is only one first sensing device, then execute the pressure head abnormality prompt operation.

[0036] In the above situation, it is known that three of the four corners of the pressure head body 1 have been pressed into place (reaching the preset pressure threshold). According to the three-point positioning principle, even if the auxiliary pressure drive device 3 continues to push the corners that have not been pressed into place, the corners will still not be able to continue to be pressed down to reach the preset pressure threshold. That is, the pressure head body 1 cannot achieve the preset pressure threshold for all four corners at the same time. At this time, it can be determined that the pressure head body 1 may have problems such as machining size error or excessive installation position error. This problem cannot be eliminated by adjusting the auxiliary pressure operation. Therefore, it is necessary to remind the operator to stop the machine for maintenance through the pressure head abnormality prompt operation.

[0037] S33, if there are two first sensing devices and the two first sensing devices are set diagonally, then execute the pressure head abnormality prompt operation.

[0038] In the above situation, it is known that two of the four corners of the pressure head body 1 are already pressed into place (reaching the preset pressure threshold). According to the three-point positioning principle, even if the auxiliary pressure drive device 3 continues to push the two corners that are not pressed into place, it is inevitable that one of the two corners that are not pressed into place will be pressed into place under the auxiliary pressure operation, while the other cannot be pressed into place. That is, the pressure head body 1 cannot achieve the preset pressure threshold for all four corners at the same time. At this time, it can be determined that the pressure head body 1 may have problems such as machining dimension error or excessive installation position error. This problem cannot be eliminated by adjusting the auxiliary pressure operation. Therefore, it is necessary to remind the operator to stop the machine for maintenance through the pressure head abnormality prompt operation.

[0039] S34, if there are two first sensing devices and the two first sensing devices are arranged adjacent to each other, then the auxiliary pressure operation is performed by the auxiliary pressure driving device 3 corresponding to the first sensing device.

[0040] In the above situation, it is known that two adjacent corners of the four sides of the pressure head body 1 have been pressed into place (reaching the preset pressure threshold). If the auxiliary pressure driving device 3 continues to push down the two corners that have not been pressed into place, the pressure head body 1 can deflect around the line connecting the two corners that have been pressed into place as an axis. Subsequently, the two corners that have not been pressed into place may be pressed into place, thereby causing all four corners to reach the preset pressure threshold at the same time.

[0041] S35, if there are three first sensing devices, then the auxiliary pressure operation is performed by the auxiliary pressure driving device 3 corresponding to the first sensing device.

[0042] In the above situation, it is known that one of the four corners of the pressure head body 1 has been pressed into place (reaching the preset pressure threshold). If the auxiliary pressure driving device 3 continues to push down the three corners that have not been pressed into place, the pressure head body 1 can deflect using the corner that has been pressed into place as a fulcrum. Subsequently, the three corners that have not been pressed into place may be pressed into place, thereby causing all four corners to reach the preset pressure threshold at the same time.

[0043] Optionally, refer to Figure 1 and Figure 5 After step S34, the following is included: S341, if the contact pressure of each first sensing device reaches the preset pressure threshold within the second preset time period, then the auxiliary pressure drive device 3 is turned off and a normal pressure holding prompt operation is performed.

[0044] In the above situation, the two adjacent corners of the pressure head body 1 that were not pressed into place during the aforementioned operation have been pressed into place under the auxiliary pressure operation. At this point, all four corners have reached the preset pressure threshold at the same time. Then, the operator is reminded through the normal pressure holding prompt operation that the pressure holding requirement has been met.

[0045] The second preset time period can be started from the node where the auxiliary pressure operation begins, and the specific duration can be flexibly set according to the pressure holding requirements; the setting of the second preset time period can reserve a certain time margin for the determination of the pressure.

[0046] S342, if the contact pressure of a first sensing device does not reach the preset pressure threshold within the second preset time period, then the auxiliary pressure drive device 3 is turned off and the pressure head abnormality prompt operation is executed.

[0047] In the above situation, it is known that three of the four corners of the pressure head body 1 have been pressed into place (reaching the preset pressure threshold). According to the three-point positioning principle, even if the auxiliary pressure drive device 3 continues to push the corners that have not been pressed into place, the corners will still not be able to continue to be pressed down to reach the preset pressure threshold. That is, the pressure head body 1 cannot achieve the preset pressure threshold for all four corners at the same time. At this time, it can be determined that the pressure head body 1 may have problems such as machining size error or excessive installation position error. This problem cannot be eliminated by adjusting the auxiliary pressure operation. Therefore, it is necessary to remind the operator to stop the machine for maintenance through the pressure head abnormality prompt operation.

[0048] S343, if the contact pressure of two first sensing devices does not reach the preset pressure threshold within the second preset time period, then the auxiliary pressure drive device 3 is turned off and an auxiliary pressure abnormality prompt operation is executed.

[0049] In the above situation, if the two adjacent corners that were not pressed into place in the aforementioned operation still fail to press into place after the auxiliary pressing operation, it can be determined that the auxiliary pressing drive device 3 itself or the auxiliary pressing operation is abnormal, causing the corresponding corners to be unable to be pressed down normally. It is necessary to remind the operator to stop the machine for maintenance through the auxiliary pressing abnormality prompt operation.

[0050] Optionally, refer to Figure 1 and Figure 6 After step S35, the following is included: S351, if the contact pressure of each first sensing device reaches the preset pressure threshold within the third preset time period, then the auxiliary pressure drive device 3 is turned off and a normal pressure holding prompt operation is performed.

[0051] In the above situation, the three corners of the pressure head body 1 that were not pressed into place during the aforementioned operation have been pressed into place under the auxiliary pressure operation. At this point, all four corners have reached the preset pressure threshold at the same time. Then, the operator is reminded through the normal pressure holding prompt operation that the pressure holding requirement has been met.

[0052] The third preset time period can be started from the node where the auxiliary pressure operation begins, and the specific duration can be flexibly set according to the pressure holding requirements; the setting of the third preset time period can reserve a certain time margin for the determination of the pressure.

[0053] S352, if the contact pressure of any one or more first sensing devices does not reach the preset pressure threshold within the third preset time period, then the number and relative position of the second sensing devices are obtained; wherein, the second sensing device is the first sensing device whose contact pressure does not reach the preset pressure threshold within the third preset time period.

[0054] S353, if there is only one second sensor, then shut down the auxiliary pressure drive device 3 and perform a pressure head abnormality warning operation.

[0055] In the above situation, it is known that three of the four corners of the pressure head body 1 have been pressed into place (reaching the preset pressure threshold). According to the three-point positioning principle, even if the auxiliary pressure drive device 3 continues to push the corners that have not been pressed into place, the corners will still not be able to continue to be pressed down to reach the preset pressure threshold. That is, the pressure head body 1 cannot achieve the preset pressure threshold for all four corners at the same time. At this time, it can be determined that the pressure head body 1 may have problems such as machining size error or excessive installation position error. This problem cannot be eliminated by adjusting the auxiliary pressure operation. Therefore, it is necessary to remind the operator to stop the machine for maintenance through the pressure head abnormality prompt operation.

[0056] S354, if there are two second sensors and the two second sensors are arranged diagonally, then the auxiliary pressure drive device 3 is turned off and the pressure head abnormality prompt operation is executed.

[0057] In the above situation, it is known that two of the four corners of the pressure head body 1 are already pressed into place (reaching the preset pressure threshold). According to the three-point positioning principle, even if the auxiliary pressure drive device 3 continues to push the two corners that are not pressed into place, it is inevitable that one of the two corners that are not pressed into place will be pressed into place under the auxiliary pressure operation, while the other cannot be pressed into place. That is, the pressure head body 1 cannot achieve the preset pressure threshold for all four corners at the same time. At this time, it can be determined that the pressure head body 1 may have problems such as machining dimension error or excessive installation position error. This problem cannot be eliminated by adjusting the auxiliary pressure operation. Therefore, it is necessary to remind the operator to stop the machine for maintenance through the pressure head abnormality prompt operation.

[0058] S355, if there are two second sensing devices and the two second sensing devices are arranged adjacent to each other, then the auxiliary pressure operation continues through the auxiliary pressure driving device 3 corresponding to the second sensing device, and the other auxiliary pressure driving devices 3 are turned off.

[0059] In the above situation, it is known that two adjacent corners of the four sides of the pressure head body 1 have been pressed into place (reaching the preset pressure threshold). If the auxiliary pressure driving device 3 continues to push down the two corners that have not been pressed into place, the pressure head body 1 can deflect around the line connecting the two corners that have been pressed into place as an axis. Subsequently, the two corners that have not been pressed into place may be pressed into place, thereby causing all four corners to reach the preset pressure threshold at the same time.

[0060] S356, If there are three second sensing devices, then shut down the auxiliary pressure drive device 3 and perform an auxiliary pressure abnormality prompt operation.

[0061] In the above situation, if the two adjacent corners that were not pressed into place in the aforementioned operation still fail to press into place after the auxiliary pressing operation, it can be determined that the auxiliary pressing drive device 3 itself or the auxiliary pressing operation is abnormal, causing the corresponding corners to be unable to be pressed down normally. It is necessary to remind the operator to stop the machine for maintenance through the auxiliary pressing abnormality prompt operation.

[0062] Optionally, refer to Figure 1 and Figure 7 After step S355, the following is included: S3551, if the contact pressure of each second sensor device reaches the preset pressure threshold within the fourth preset time period, then the auxiliary pressure drive device 3 is turned off and a normal pressure holding prompt operation is performed.

[0063] In the above situation, the two corners of the pressure head body 1 that were not pressed into place during the aforementioned operation have been pressed into place under the auxiliary pressure operation. At this point, all four corners have reached the preset pressure threshold at the same time. Then, the operator is reminded through the normal pressure holding prompt operation that the pressure holding requirement has been met.

[0064] S3552, if the contact pressure of a second sensing device does not reach the preset pressure threshold within the fourth preset time period, then the auxiliary pressure drive device 3 is turned off and the pressure head abnormality prompt operation is executed. In the above situation, it is known that three of the four corners of the pressure head body 1 have been pressed into place (reaching the preset pressure threshold). According to the three-point positioning principle, even if the auxiliary pressure drive device 3 continues to push the corners that have not been pressed into place, the corners will still not be able to continue to be pressed down to reach the preset pressure threshold. That is, the pressure head body 1 cannot achieve the preset pressure threshold for all four corners at the same time. At this time, it can be determined that the pressure head body 1 may have problems such as machining size error or excessive installation position error. This problem cannot be eliminated by adjusting the auxiliary pressure operation. Therefore, it is necessary to remind the operator to stop the machine for maintenance through the pressure head abnormality prompt operation.

[0065] S3553, if the contact pressure of two second sensing devices does not reach the preset pressure threshold within the fourth preset time period, then the auxiliary pressure drive device 3 is turned off and an auxiliary pressure abnormality prompt operation is executed.

[0066] In the above situation, if the two adjacent corners that were not pressed into place in the aforementioned operation still fail to press into place after the auxiliary pressing operation, it can be determined that the auxiliary pressing drive device 3 itself or the auxiliary pressing operation is abnormal, causing the corresponding corners to be unable to be pressed down normally. It is necessary to remind the operator to stop the machine for maintenance through the auxiliary pressing abnormality prompt operation.

[0067] Optionally, refer to Figure 2 and Figure 8 In another exemplary embodiment, a central pressure sensing device 12 is provided at the centroid of the pressure head body 1. After step S2, the following is included: S21, the contact pressure between the centroid of the pressure head body 1 and the pressure component to be protected is detected by the central pressure sensor 12.

[0068] S22, if the contact pressure between the centroid of the pressure head body 1 and the pressure component to be maintained reaches the preset pressure threshold, then the normal pressure maintenance prompt operation is executed.

[0069] S23, if the contact pressure between the centroid of the pressure head body 1 and the pressure component to be protected does not reach the preset pressure threshold, then execute the pressure head abnormality prompt operation.

[0070] The principle of the center pressure sensor 12 in detecting the contact pressure is the same as that of the corner pressure sensor 11, and will not be described again here. By detecting the contact pressure at the center of the pressure head body 1, in conjunction with the pressure detection at the corners, it can avoid the situation where the center height of the pressure head body 1 (specifically the pressing surface of the pressure head body 1) is higher than the edge height, resulting in the center position not being pressed in place even when all the corners are pressed in place. This allows the operator to be promptly informed to check for shape errors in the pressure head body 1, further improving the uniformity of pressing, better meeting the pressure holding requirements, and improving product quality.

[0071] Optionally, refer to Figure 1 and Figure 9 Step S1 includes: S11, the main pressure drive device 2 drives the pressure head body 1 to move in the direction close to the pressure component to be protected at a first speed.

[0072] S12, when the distance between the pressure head body 1 and the pressure component to be protected is less than a preset distance threshold, the main pressure driving device 2 drives the pressure head body 1 to move in the direction closer to the pressure component to be protected at a second speed, and the corner pressure sensing device 11 performs the detection operation; wherein, the second speed is less than the first speed.

[0073] In this embodiment, after the component to be pressed is fixed in the positioning fixture, the pressure head body 1 is relatively far from the component. The main pressure drive device 2 can drive the pressure head body 1 to move at high speed to the pre-pressing position (where the pressure head body 1 is closer to the component) at a first speed of 30 mm / s. Then, it switches to a second speed of 1 mm / s to drive the pressure head body 1 to slowly feed towards the component, and begins to collect pressure data from the pressure sensing devices 11 at each corner in real time. Based on the above-mentioned speed adjustment settings, the pressing time can be saved and the pressing efficiency can be improved, while avoiding the problem of impact on the component to be pressed due to excessive feed speed, which could cause damage to the component. Moreover, it is not necessary to acquire pressure data throughout the entire process, thus achieving the effect of saving energy.

[0074] It should be noted that the normal pressure holding prompt operation, pressure head abnormality prompt operation, and auxiliary pressure abnormality prompt operation in the above embodiments can be implemented by an audible and visual alarm device (such as an alarm light, buzzer, etc.), or prompt information can be output. The prompt information can be presented to the operator in the form of voice, text, images, etc.

[0075] Correspondingly, refer to Figure 10 The present invention also provides a pressure holding control device, which includes: The drive module 10 is used to drive the pressure head body 1 to move in the direction close to the pressure member to be protected via the main pressure drive device 2.

[0076] The detection module 20 is used to perform detection operations via the corner pressure sensing device 11.

[0077] The prompt module 30 is used to shut down the main pressure drive device 2 and perform normal pressure holding prompt operation if the contact pressure of each corner pressure sensor 11 reaches the preset pressure threshold within the first preset time period. The auxiliary pressure module 40 is used to shut down the main pressure drive device 2 and perform auxiliary pressure operation through the corresponding auxiliary pressure drive device 3 if the contact pressure of any one or more corner pressure sensing devices 11 does not reach the preset pressure threshold within a first preset time period.

[0078] Correspondingly, embodiments of the present invention also provide a computer-readable storage medium storing a pressure holding control program, which, when executed by a processor, implements the steps of the above-described pressure holding control method.

[0079] In this embodiment, the aforementioned computer-readable storage medium may include, but is not limited to, any type of disk (including floppy disk, hard disk, optical disk, CD-ROM, and magneto-optical disk), ROM (Read-Only Memory), RAM (Random Access Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory, magnetic cards, or optical cards, and other media capable of storing program code.

[0080] The aforementioned pressure holding control device, pressure holding equipment, and computer-readable storage medium can all be configured to correspond to the pressure holding control method, the specific steps of which are described in the above embodiments. Since the aforementioned pressure holding control device, pressure holding equipment, and computer-readable storage medium employ all the technical solutions corresponding to all the above embodiments, they possess at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated upon further here.

[0081] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0082] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0083] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0084] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A pressure-holding control method, applied to a pressure head assembly, characterized in that, Includes the following steps: The main pressure drive device drives the pressure head body to move in the direction close to the part to be protected, and the detection operation is performed by the corner pressure sensor. Each corner of the pressure head body is provided with a corner pressure sensor, and the detection operation is to detect the contact pressure between the corresponding corner and the part to be protected. If the contact pressure of each of the aforementioned corner pressure sensing devices reaches the preset pressure threshold within the first preset time period, then the main pressure drive device is turned off, and a normal pressure holding prompt operation is performed. If the contact pressure of any one or more of the corner pressure sensing devices does not reach the preset pressure threshold within the first preset time period, the main pressure drive device is turned off, and an auxiliary pressure operation is performed by the corresponding auxiliary pressure drive device. The pressure head body is connected to the main pressure drive device by a flexible hinge, and the auxiliary pressure drive device is set one-to-one with the corner. The auxiliary pressure operation is to drive the corresponding corner to move in the direction close to the pressure member to be protected. The step of performing the auxiliary pressure operation through the corresponding auxiliary pressure driving device includes: The number and relative position of the first sensing device are obtained; wherein, the pressure head body has four corner portions, and each corner pressure sensing device is respectively disposed at the four corner portions; the first sensing device is the corner pressure sensing device whose contact pressure does not reach the preset pressure threshold within the first preset time period. If there is only one first sensing device, then perform a pressure head abnormality prompt operation; If there are two first sensing devices, and the two first sensing devices are arranged diagonally, then an abnormal pressure head prompt operation will be executed. If there are two first sensing devices, and the two first sensing devices are arranged adjacent to each other, then the auxiliary pressure operation is performed by the auxiliary pressure driving device corresponding to the first sensing device. If there are three first sensing devices, the auxiliary pressure operation is performed by the auxiliary pressure driving device corresponding to the first sensing device.

2. The pressure maintenance control method according to claim 1, characterized by, If there are two first sensing devices, and the two first sensing devices are arranged adjacent to each other, then after the step of performing the auxiliary pressure operation through the auxiliary pressure driving device corresponding to the first sensing device, the following steps are included: If the contact pressure of each of the first sensing devices reaches the preset pressure threshold within the second preset time period, the auxiliary pressure driving device is turned off, and a normal pressure holding prompt operation is performed. If the contact pressure of one of the first sensing devices does not reach the preset pressure threshold within the second preset time period, the auxiliary pressure drive device is turned off, and an abnormal pressure head prompt operation is executed. If the contact pressure of two of the first sensing devices does not reach the preset pressure threshold within the second preset time period, the auxiliary pressure driving device is turned off, and an auxiliary pressure abnormality prompt operation is executed.

3. The pressure maintenance control method according to claim 1, characterized by, If there are three first sensing devices, then after the step of performing the auxiliary pressure operation through the auxiliary pressure driving device corresponding to the first sensing device, the process includes: If the contact pressure of each of the first sensing devices reaches the preset pressure threshold within the third preset time period, the auxiliary pressure driving device is turned off, and a normal pressure holding prompt operation is performed. If the contact pressure of any one or more of the first sensing devices does not reach the preset pressure threshold within the third preset time period, then the number and relative position of the second sensing devices are obtained; wherein, the second sensing device is the first sensing device whose contact pressure does not reach the preset pressure threshold within the third preset time period. If there is only one second sensing device, then the auxiliary pressure driving device is turned off, and an abnormal pressure head prompt operation is performed; If there are two second sensing devices, and the two second sensing devices are arranged diagonally, then the auxiliary pressure drive device is turned off, and an abnormal pressure head prompt operation is performed. If there are two second sensing devices, and the two second sensing devices are arranged adjacent to each other, then the auxiliary pressure operation continues through the auxiliary pressure driving device corresponding to the second sensing device, and the other auxiliary pressure driving devices are turned off. If there are three second sensing devices, then the auxiliary pressure drive device is turned off, and an auxiliary pressure abnormality prompt operation is performed.

4. The pressure maintenance control method according to claim 3, characterized by, After the step of continuing the auxiliary pressure operation via the auxiliary pressure driving device corresponding to the second sensing device, the following steps are included: If the contact pressure of each of the second sensing devices reaches the preset pressure threshold within the fourth preset time period, the auxiliary pressure driving device is turned off, and a normal pressure holding prompt operation is performed. If the contact pressure of one of the second sensing devices does not reach the preset pressure threshold within the fourth preset time period, the auxiliary pressure drive device is turned off, and an abnormal pressure head prompt operation is executed. If the contact pressure of two of the second sensing devices does not reach the preset pressure threshold within the fourth preset time period, the auxiliary pressure drive device is turned off, and an auxiliary pressure abnormality prompt operation is executed.

5. The pressure control method of claim 1, wherein The step of shutting down the main pressure drive device after the step of ensuring that the contact pressure of each corner pressure sensing device reaches a preset pressure threshold within a first preset time period includes: The contact pressure between the centroid of the pressure head body and the pressure component to be protected is detected by a central pressure sensor; wherein, the central pressure sensor is located at the centroid of the pressure head body. If the contact pressure between the centroid of the pressure head body and the pressure component to be maintained reaches the preset pressure threshold, then a normal pressure maintenance prompt operation is performed. If the contact pressure between the centroid of the pressure head body and the pressure component to be protected does not reach the preset pressure threshold, an abnormal pressure head prompt operation will be executed.

6. The pressure control method of claim 1, wherein The step of driving the pressure head body to move along the direction closer to the pressure member to be protected by the main pressure driving device, and performing the detection operation by the corner pressure sensing device, includes: The main pressure drive device drives the pressure head body to move in a direction close to the pressure component to be protected at a first speed. When the distance between the pressure head body and the pressure component to be protected is less than a preset distance threshold, the main pressure driving device drives the pressure head body to move in a direction closer to the pressure component to be protected at a second speed, and the detection operation is performed by the corner pressure sensing device; wherein, the second speed is less than the first speed.

7. A pressure-holding control device for implementing the pressure-holding control method according to any one of claims 1 to 6, characterized by The pressure holding control device includes: The drive module is used to drive the pressure head body to move in the direction close to the pressure object through the main pressure drive device; The detection module is used for detection operations via corner pressure sensors; The prompting module is used to shut down the main pressure drive device and perform a normal pressure holding prompt operation if the contact pressure of each of the corner pressure sensing devices reaches a preset pressure threshold within a first preset time period. The auxiliary pressure module is used to shut down the main pressure drive device and perform auxiliary pressure operation through the corresponding auxiliary pressure drive device if the contact pressure of any one or more of the corner pressure sensing devices does not reach the preset pressure threshold within the first preset time period.

8. A pressure maintaining apparatus characterized by comprising: The pressure-holding device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the pressure-holding control method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a pressure holding control program, which, when executed by a processor, implements the steps of the pressure holding control method as described in any one of claims 1 to 6.

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