Pressure maintaining device and control method of pressure maintaining device

Abstract

The application belongs to the product pressure maintaining technical field, and discloses a kind of pressure maintaining equipment and the control method of pressure maintaining equipment.Pressure maintaining equipment includes first driving part, pressure maintaining mechanism, first pressure sensor, second pressure sensor and control system.Pressure maintaining mechanism includes first pressure maintaining head and second pressure maintaining head;First pressure maintaining head applies pressure to the first pressure maintaining area of product, and second pressure maintaining head applies pressure to the second pressure maintaining area of product;First pressure sensor detects the pressure of first pressure maintaining head in real time, and second pressure sensor detects the pressure of second pressure maintaining head in real time, control system is used to obtain pressure data, and the difference between the pressure of first pressure maintaining head and the pressure of second pressure maintaining head is controlled within preset threshold value.This application can reduce the problem that the pressure maintaining effect of two pressure maintaining areas is greatly different, and improve the yield of product as a whole.

Description

Technical Field

[0001] This invention relates to the field of product pressure holding technology, and in particular to a pressure holding device and a control method for the pressure holding device. Background Technology

[0002] In the manufacturing process of electronic products, there is a need to fix components together by adhesive. After bonding, pressure holding is required to improve the bonding strength. For example, the speaker unit of a wireless headset is bonded to the inner wall of the shell with adhesive. After bonding, pressure holding equipment is needed to maintain the pressure.

[0003] In related technologies, pressure-holding equipment includes a pressure head, a driving component, and a limiting component. The pressure head is used to contact the component, the driving component is used to drive the pressure head to move closer to or away from the component, and the limiting component is used to limit the movement distance of the pressure head to avoid damage to the component. For the same product, the position of the limiting component is the same. If the positioning position of the component changes slightly, due to the low precision of mechanical pressure control, problems such as product damage or poor pressing are likely to occur. Summary of the Invention

[0004] One embodiment of this application provides a pressure-holding device to solve the technical problem of low pressure-holding reliability.

[0005] One embodiment of this application provides a control method for a pressure-holding device that can ensure the pressure-holding effect on the product.

[0006] Pressure holding equipment, including: First driving component; The pressure holding mechanism includes a first pressure holding head and a second pressure holding head. The first pressure holding head and the second pressure holding head are respectively connected to the first driving member through an elastic sliding mechanism and move along a first direction under the drive of the first driving member. The first pressure holding head is used to apply pressure to a first pressure holding area of ​​the product, and the second pressure holding head is used to apply pressure to a second pressure holding area of ​​the product. The first pressure holding area and the second pressure holding area are offset in the first direction. The first pressure sensor is used to detect the pressure of the first pressure holding head in real time; The second pressure sensor is used to detect the pressure of the second pressure holding head in real time; The control system is electrically connected to the first drive unit, the first pressure sensor, and the second pressure sensor. The control system is used to acquire pressure data and control the difference between the pressure of the first pressure holding head and the pressure of the second pressure holding head to be within a preset threshold.

[0007] In one or more embodiments of this application, the elastic sliding mechanism includes a first connecting block, a first mounting block, and a first sliding assembly. The first connecting block is connected to the output end of the first driving member, the first mounting block is disposed on the first connecting block, and the first pressure sensor is disposed on the first mounting block. The first sliding assembly is slidably disposed on the first connecting block along the first direction, the first pressure holding head is connected to the first sliding assembly, and the first pressure holding head elastically abuts against the product under the action of the first sliding assembly. The first sliding assembly can abut against the first pressure sensor. The elastic sliding mechanism further includes a second connecting block, a second mounting block, and a second sliding assembly. The second connecting block is connected to the output end of the first driving member, the second mounting block is disposed on the second connecting block, and the second pressure sensor is disposed on the second mounting block. The second sliding assembly is slidably disposed on the second connecting block along a second direction, the second pressure holding head is connected to the second sliding assembly, and the second pressure holding head elastically abuts against the product under the action of the second sliding assembly. The second sliding assembly can abut against the second pressure sensor. The first direction and the second direction are set at an angle.

[0008] In one or more embodiments of this application, the first sliding assembly includes a first slider, a first elastic element, and a first rod. The first connecting block is provided with a first limiting block disposed opposite to the first mounting block in the first direction. The first slider is slidably connected to the first connecting block and located between the first mounting block and the first limiting block. The first slider is provided with a first sliding hole. One end of the first rod is slidably inserted through the first sliding hole. The other end of the first rod is provided with a first protrusion that can abut against the first pressure sensor. The first elastic element is sleeved on the first rod, and one end of the first elastic element abuts against the first protrusion and the other end abuts against the first slider. The first pressure holding head is connected to the first slider. The second sliding assembly includes a second slider, a second elastic element, and a second rod. The second connecting block is provided with a second limiting block disposed opposite to the second mounting block in the second direction. The second slider is slidably connected to the second connecting block and located between the second mounting block and the second limiting block. The second slider is provided with a second sliding hole. One end of the second rod can slide through the second sliding hole, and the other end of the second rod is provided with a second protrusion that can abut against the second pressure sensor. The second elastic element is sleeved on the second rod, and one end of the second elastic element abuts against the second protrusion, while the other end abuts against the second slider. The second pressure-holding head is connected to the second slider.

[0009] In one or more embodiments of this application, a second driving member is further included. The second driving member is disposed on the second connecting block, and the second driving member is used to drive the second sliding component to move in a direction away from the second pressure-holding area. The second drive unit is electrically connected to the control system, which is configured to control the opening and closing of the second drive unit so that the second pressure-holding head contacts the product with a delay.

[0010] In one or more embodiments of this application, a support mechanism is also included; The bearing mechanism includes a rotating component, a rotating drive component, and at least two carriers. The at least two carriers are disposed on the rotating component. The rotating drive component is used to drive the rotating component to rotate, so that the at least two carriers switch between the upper / lower material position and the pressure holding position.

[0011] A control method for a pressure-holding device, applied to the aforementioned pressure-holding device, includes the following steps: The control system controls the first driving component to start, and the first driving component drives the first pressure holding head and the second pressure holding head to move synchronously. The control system acquires the pressure data of the first pressure sensor and the second pressure sensor in real time. The control system performs a comprehensive deviation calculation based on the pressure data; The control system controls the first drive component to operate based on the comprehensive deviation calculation result, so that the pressure of the first pressure holding head is within the first pressure range, the pressure of the second pressure holding head is within the second pressure range, and the difference between the pressure of the first pressure holding head and the pressure of the second pressure holding head is controlled within a preset threshold.

[0012] In one or more embodiments of this application, the control system performs a comprehensive deviation calculation based on the pressure data from the first pressure sensor and the second pressure sensor, including the following steps: The average pressure is calculated based on the pressure data, and the average pressure is the arithmetic average of the pressure of the first pressure holding head and the pressure of the second pressure holding head. The overall control deviation is determined according to the control deviation formula, which is: F = a × (P0 - Pj) + b × (P1 - P2), where F represents the overall control deviation, a represents the average pressure weighting coefficient, and a > 0.5; P0 represents the target pressure, Pj represents the average pressure, b represents the pressure difference weighting coefficient, and b < a; P1 represents the pressure of the first pressure holding head, and P2 represents the pressure of the second pressure holding head. The control system controls the first drive component to operate according to the comprehensive control deviation, so that the pressure of the first pressure holding head is within the first pressure range, the pressure of the second pressure holding head is within the second pressure range, and the difference between the pressure of the first pressure holding head and the pressure of the second pressure holding head is less than or equal to 1N.

[0013] In one or more embodiments of this application, the control system includes a PID controller, and the control method further includes the following steps: Based on the comprehensive control deviation and its rate of change, determine the proportional gain increment, integral gain increment, and derivative gain increment; The PID controller generates motion control quantities based on the aforementioned gain parameters. The control system adjusts the action of the first drive component according to the motion control quantity.

[0014] In one or more embodiments of this application, the control method for the pressure-holding device further includes the following steps: Real-time monitoring of the absolute pressure difference between the first and second pressure-holding heads; If the absolute pressure difference is greater than the maximum permissible pressure difference within a first preset time period, the control system adjusts the pressure balance control weight. If the absolute pressure difference cannot be reduced to below a preset value within a second preset time period, the control system triggers an alarm.

[0015] In one or more embodiments of this application, the pressure-holding device includes a second driving member; Before the first driving component is started, the control system controls the second driving component to drive the second pressure holding head to move in a direction away from the second pressure holding area; After the first pressure-holding head contacts the first pressure-holding area, the control system controls the second driving component to reset, and the second pressure-holding head contacts the second pressure-holding area.

[0016] The beneficial effects of one embodiment of this application are as follows: By setting a first pressure sensor to detect the pressure of the first pressure holding head in real time, and a second pressure sensor to detect the pressure of the second pressure holding head in real time, the control system controls the movement direction and amplitude of the first driving component based on the pressure data from the first and second pressure sensors. This enables simultaneous pressure holding in both pressure holding areas of the product, improving pressure holding efficiency. Furthermore, the control system achieves high control precision. Through real-time pressure feedback, the control system can dynamically adjust the movement of the driving component to avoid pressure overshoot or undershoot, thus balancing product damage prevention and pressure holding effect. The pressure difference between the first and second pressure holding heads is controlled within a preset threshold, thereby achieving pressure balance in both pressure holding areas. This results in a more uniform pressure holding effect in both areas, avoiding significant differences in pressure holding effect and improving the overall product yield.

[0017] The control method for a pressure-holding device provided in one embodiment of this application uses a first driving component to simultaneously drive the movement of a first pressure-holding head and a second pressure-holding head, thereby applying pressure to the product. This reduces the control difficulty. The first driving component is controlled based on the result of comprehensive deviation calculation, so that the pressure of the first pressure-holding head is within a first pressure range, the pressure of the second pressure-holding head is within a second pressure range, and the difference between the pressures of the two pressure-holding heads is controlled within a preset threshold. This achieves the purpose of balancing the pressure in the two pressure-holding areas, making the pressure-holding effect of the two pressure-holding areas more uniform, avoiding the problem of large differences in the pressure-holding effect between the two pressure-holding areas, and improving the overall yield of the product. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this application and these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the pressure-holding device provided in the embodiments of this application; Figure 2 This is a partial structural schematic diagram of the pressure-holding device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the structure of the two carriers, the first pressure holding head, and the second pressure holding head provided in the embodiments of this application; Figure 4 This is a partial structural diagram of the elastic sliding mechanism and the assembly diagram of the first pressure holding head provided in the embodiments of this application; Figure 5 This application Figure 4The front view of the structure shown; Figure 6 This application Figure 4 A cross-sectional view of the structure shown; Figure 7 This is a partial structural diagram of the elastic sliding mechanism and the assembly diagram of the second pressure holding head provided in the embodiments of this application; Figure 8 This is an assembly diagram of the housing and rotating parts provided in an embodiment of this application; Figure 9 This is an exploded view of the housing, rotating component, and rotating drive component provided in the embodiments of this application.

[0020] Explanation of reference numerals in the attached figures: 1. First driving component; 2. Pressure holding mechanism; 21. First pressure holding head; 211. Third sliding hole; 212. First buffer block; 22. Second pressure holding head; 221. Fourth sliding hole; 222. Second buffer block; 3. First pressure sensor; 4. Second pressure sensor; 5. Elastic sliding mechanism; 51. First connecting block; 511. First limiting block; 52. First mounting block; 53. First sliding assembly; 531. First slider; 5311. First sliding hole; 5312. Large hole section; 5313. Small hole section; 532. First elastic element; 533. First... Rod body; 5331, First protrusion; 54, Second connecting block; 541, Second limiting block; 55, Second mounting block; 56, Second sliding assembly; 561, Second slider; 5611, Second sliding hole; 562, Second elastic element; 563, Second rod body; 5631, Second protrusion; 57, Fixing plate; 58, First adjusting screw; 6, Second driving component; 7, Bearing mechanism; 71, Rotating component; 72, Rotating driving component; 73, Carrier; 8, Box body; 81, Through hole; 10, Product; 101, First pressure holding area; 102, Second pressure holding area; X, the first direction; Y, the second direction. Detailed Implementation

[0021] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of this application will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not all of them.

[0022] It should be understood that the phrase "an embodiment" or "one embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in one embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0026] In the description of this embodiment, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0027] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in between the component.

[0028] The following is in conjunction with the appendix Figures 1-9 The technical solution of this application will be further illustrated through specific implementation methods.

[0029] This embodiment provides a pressure-holding device for holding the pressure of products. It has high pressure control accuracy and reduces the risk of product damage or poor pressing.

[0030] It should be noted that the pressure-holding device provided in this embodiment can be used for pressure holding after bonding between components of product 10. In some optional embodiments, such as Figure 1 As shown, product 10 can be a wireless headset. After the speaker unit of the wireless headset is bonded to the inner wall of the support structure, it needs to be pressurized using a pressure-holding device. The required pressure is 20N±2N to improve the connection strength between the speaker unit and the support structure.

[0031] In some embodiments, the wireless earphone in this embodiment has two speaker units. After the two speaker units are bonded to the support structure, they can be pressure-held together by a pressure-holding device, thereby improving the pressure-holding efficiency. In this embodiment, the location of one speaker unit is referred to as the first pressure-holding region 101, and the location of the other speaker unit is referred to as the second pressure-holding region 102, such as... Figure 3 As shown, the first pressure-holding region 101 and the second pressure-holding region 102 have a height difference. Specifically, the inner wall of the support structure is an arc-shaped wall, the first pressure-holding region 101 is located at the lowest point of the arc-shaped wall, and the second pressure-holding region 102 is located diagonally above the first pressure-holding region 101.

[0032] For example, such as Figures 1 to 9 As shown, the pressure-holding device includes a first driving component 1, a pressure-holding mechanism 2, a first pressure sensor 3, a second pressure sensor 4, an elastic sliding mechanism 5, and a control system (not shown in the figure). The first driving component 1 is used to drive the pressure-holding mechanism 2 to move, so as to provide pressure to the position where pressure needs to be held.

[0033] In some optional embodiments, the first driving element 1 may be a servo motor or other driving components, which is not limited in this embodiment.

[0034] For example, such as Figure 2 and Figure 3As shown, the pressure-holding mechanism 2 includes a first pressure-holding head 21 and a second pressure-holding head 22. The first pressure-holding head 21 and the second pressure-holding head 22 are respectively connected to the first driving member 1 via an elastic sliding mechanism 5, and can move along the first direction X under the drive of the first driving member 1. That is, in this embodiment, the first driving member 1 can drive the first pressure-holding head 21 and the second pressure-holding head 22 to move in the first direction X. In this embodiment, by providing the elastic sliding mechanism 5, the first pressure-holding head 21 and the second pressure-holding head 22 can elastically press against the product. That is, in this embodiment, the first pressure-holding head 21 elastically abuts against the product 10, and the second pressure-holding head 22 elastically abuts against the product 10, reducing damage to the product 10 caused by hard contact. The first pressure-holding head 21 is used to apply pressure to the first pressure-holding area 101 of the product 10 (i.e., one of the speaker units), and the second pressure-holding head 22 is used to apply pressure to the second pressure-holding area 102 of the product 10 (i.e., the other speaker unit). In this embodiment, the pressure applied by the first pressure-holding head 21 is referred to as pressure, and the pressure applied by the second pressure-holding head 22 is also referred to as pressure. The first pressure-holding region 101 and the second pressure-holding region 102 are offset in the first direction X. The first direction X can be a vertical direction, or other directions intersecting the vertical direction; this embodiment does not limit this.

[0035] In this embodiment, the first pressure sensor 3 is used to detect the pressure of the first pressure holding head 21 in real time, thereby obtaining the pressure of the first pressure holding head 21. The second pressure sensor 4 is used to detect the pressure of the second pressure holding head 22 in real time, thereby obtaining the pressure of the second pressure holding head 22. By setting the first pressure sensor 3 and the second pressure sensor 4, the pressure applied to the product 10 can be detected in real time, thereby facilitating real-time pressure adjustment.

[0036] In this embodiment, the control system is electrically connected to the first drive unit 1, the first pressure sensor 3, and the second pressure sensor 4. For example, the control system can be signal-connected to the first drive unit 1, the first pressure sensor 3, and the second pressure sensor 4. The control system is used to acquire pressure data from the first pressure sensor 3 and the second pressure sensor 4, and control the operation of the first drive unit 1 according to the pressure data, so that the difference between the pressure of the first pressure holding head 21 and the pressure of the second pressure holding head 22 is controlled within a preset threshold.

[0037] In some optional implementations, the preset threshold can be less than or equal to 1N. For example, the preset threshold can be 1N, 0.9N, 0.8N, etc. In other optional implementations, the preset threshold can also be 1.5N, 2N, 2.5N, etc., and can be flexibly selected according to needs. This embodiment does not limit this.

[0038] In some optional embodiments, the pressure of each pressure holding head also needs to be controlled to prevent damage to the product. For example, the pressure of the first pressure holding head 21 is within a first pressure range, causing the pressure of the second pressure holding head 22 to be within a second pressure range. It should be noted that the first pressure range can be 18N-22N, and the second pressure range can also be 18N-22N; this embodiment does not limit this range and the choice can be flexible depending on the type of product 10. Optionally, both the first pressure sensor 3 and the second pressure sensor 4 can be Hexin Jingcheng XJC-Z15-H9 pressure sensors, which, in conjunction with the first driving component 1, can achieve high-precision closed-loop force control and precise pressure value management.

[0039] The pressure-holding device provided in this embodiment uses a first pressure sensor 3 to detect the pressure of the first pressure-holding head 21 in real time, and a second pressure sensor 4 to detect the pressure of the second pressure-holding head 22 in real time. The control system controls the movement direction and amplitude of the first driving component 1 based on the pressure data from the first and second pressure sensors 3 and 4, thereby achieving simultaneous pressure holding in both pressure-holding areas of the product 10, improving pressure-holding efficiency. Furthermore, the control system provides high control precision; when excessive pressure is detected at the pressure-holding area, the control system can control the first driving component 1 to drive the first pressure-holding head 21 and... The second pressure holding head 22 moves away from the pressure holding area to reduce the risk of product 10 being damaged. When the pressure actually applied to the pressure holding area is detected to be too low, the control system can control the first drive component 1 to drive the first pressure holding head 21 and the second pressure holding head 22 to move closer to the pressure holding area, thereby reducing the risk of poor pressing. The pressure difference between the first pressure holding head 21 and the second pressure holding head 22 is controlled within a preset threshold, thereby achieving the purpose of balancing the pressure in the two pressure holding areas, making the pressure holding effect of the two pressure holding areas more uniform, avoiding the problem of large difference in the pressure holding effect of the two pressure holding areas, and improving the overall yield of product 10.

[0040] In some alternative embodiments, the pressure-holding device further includes a housing 8, on which the first drive member 1 is disposed. Exemplarily, the first drive member 1 may be disposed within the housing 8 to be protected by the housing 8.

[0041] In one or more embodiments of this application, the first driving member 1 is used to drive the elastic sliding mechanism 5 to move in the first direction X, and the first pressure holding head 21 and the second pressure holding head 22 are connected to the elastic sliding mechanism 5, so that the first driving member 1 drives the first pressure holding head 21 and the second pressure holding head 22 to move in the first direction X through the elastic sliding mechanism 5.

[0042] In at least one possible implementation, such as Figures 4 to 6As shown, the elastic sliding mechanism 5 includes a first connecting block 51, a first mounting block 52, and a first sliding assembly 53. The first connecting block 51 is connected to the output end of the first driving member 1, the first mounting block 52 is disposed on the first connecting block 51, and the first pressure sensor 3 is disposed on the first mounting block 52. The first sliding assembly 53 is slidably disposed on the first connecting block 51 along a first direction X. A first pressure-holding head 21 is connected to the first sliding assembly 53, and the first pressure-holding head 21 can elastically abut against the product 10 under the action of the first sliding assembly 53. The first sliding assembly 53 can abut against the first pressure sensor 3.

[0043] By setting the first connecting block 51, a connection with the first driving component 1 can be achieved. The first mounting block 52 and the first sliding component 53 can be mounted on the first connecting block 51, thereby enabling the first mounting block 52, the first connecting block 51, and the first sliding component 53 to move in the same direction and synchronously. By setting the first mounting block 52, the first pressure sensor 3 can be mounted on the first mounting block 52, and then on the first connecting block 51, to detect the pressure of the first pressure-holding head 21. By setting the first sliding component 53, a slidable connection between the first pressure-holding head 21 and the first connecting block 51 is achieved. This also allows the first pressure-holding head 21 to elastically abut against the product 10, reducing the risk of hard contact between the first pressure-holding head 21 and the product 10, thereby reducing the risk of damage to the product 10 and improving reliability.

[0044] In some optional embodiments, the housing 8 is provided with a back plate (not shown in the figure), and the first connecting block 51 can be slidably connected to the back plate to improve the reliability of movement in the first direction X. The first connecting block 51 can be directly connected to the output end of the first driving member 1, or it can be indirectly connected to the output end of the first driving member 1. This embodiment does not limit this.

[0045] In some embodiments, the first driving component 1 is a servo motor. The output end of the first driving component 1 is connected to a lead screw, and a threaded sleeve is screwed onto the lead screw. A fixing plate 57 is fixedly connected to the threaded sleeve. The fixing plate 57 is slidably disposed on the back plate of the housing 8 through a slide rail slider assembly. The first connecting block 51 is fixedly connected to the side of the fixing plate 57 away from the back plate, thus realizing the connection between the first driving component 1 and the first connecting block 51.

[0046] Further optional, such as Figure 6As shown, the first sliding assembly 53 includes a first slider 531, a first elastic element 532, and a first rod 533. The first connecting block 51 has a first limiting block 511 disposed opposite to the first mounting block 52 in the first direction X. For example, both the first limiting block 511 and the first mounting block 52 are located on the side of the first connecting block 51 away from the fixing plate 57. The first limiting block 511 limits the movement limit of the first sliding assembly 53 when it moves away from the first mounting block 52. When the first direction X is vertical, the first limiting block 511 limits the lowest position of the first sliding assembly 53. The first slider 531 is slidably connected to the first connecting block 51 along the first direction X and is located between the first mounting block 52 and the first limiting block 511, thereby limiting the range of movement in the first direction X by the first mounting block 52 and the first limiting block 511. The first slider 531 has a first sliding hole 5311. The length direction of the first rod 533 is the first direction X, and one end of the first rod 533 can slide through the first sliding hole 5311, so that the first rod 533 and the first slider 531 can move relative to each other. The other end of the first rod 533 has a first protrusion 5331, which can abut against the first pressure sensor 3. The first elastic member 532 is sleeved on the first rod 533, and one end of the first elastic member 532 abuts against the first protrusion 5331, and the other end abuts against the first slider 531. The first pressure holding head 21 is connected to the first slider 531.

[0047] By providing a first elastic element 532, and ensuring that the elastic deformation direction of the first elastic element 532 is the first direction X, the first pressure-holding head 21 achieves elastic contact with the product 10, further reducing the risk of damage to the product 10 and improving the reliability of the pressure-holding function of the product 10. Exemplarily, the first elastic element 532 can be a spring or other component capable of elastic deformation; this embodiment does not limit this. For example, the first elastic element 532 can be a MISUMI UM6-30 spring with a spring constant of 2.9 N / mm.

[0048] In at least one embodiment, a first adjusting screw 58 is provided on the first mounting block 52, and the first pressure sensor 3 is connected to the first adjusting screw 58. The relative position of the first pressure sensor 3 and the first mounting block 52 in the first direction X can be adjusted by the first adjusting screw 58. Since the first rod 533 abuts against the first pressure sensor 3, the pressure of the first pressure holding head 21 can be precisely adjusted by the cooperation of the first adjusting screw 58, the first rod 533, the first elastic element 532 and the first slider 531, so as to be suitable for different needs or different application scenarios.

[0049] Optionally, the first sliding hole 5311 can be a stepped hole, and as shown in the figure. Figure 6As shown, the first sliding hole 5311 includes a large hole section 5312 and a small hole section 5313. The large hole section 5312 is closer to the first mounting block 52 than the small hole section 5313. The first rod 533 is slidably inserted through the large hole section 5312 and the small hole section 5313. One end of the first elastic member 532, facing away from the first protrusion 5331, is disposed in the large hole section 5312, and the end of the first elastic member 532 abuts against the stepped surface of the large hole section 5312, thereby achieving contact with the first slider 531.

[0050] In this embodiment, the first pressure-holding head 21 is connected to the side of the first slider 531 opposite to the first connecting block 51. For example... Figure 5 As shown, the first pressure-holding head 21 is provided with a third sliding hole 211. The length direction of the third sliding hole 211 is perpendicular to the first direction X and the thickness direction of the first slider 531, that is, the length direction of the third sliding hole 211 is the width direction of the first slider 531. After the fixing member passes through the third sliding hole 211, it is detachably connected to the first slider 531, so that the position of the first pressure-holding head 21 relative to the first slider 531 in the length direction of the third sliding hole 211 is adjustable, thereby improving flexibility and versatility.

[0051] In some optional embodiments, the end of the first pressure-holding head 21 that contacts the product 10 may be provided with a first buffer block 212 (e.g., using SUS304+ESD80° urethane adhesive). The first buffer block 212 serves both anti-static and buffering functions. In other embodiments, the end of the first pressure-holding head 21 that contacts the product 10 may be designed with a 2mm overpressure protection allowance to protect the product 10. Exemplarily, the first buffer block 212 is capable of providing a 2mm overpressure protection allowance.

[0052] In one embodiment of this application, such as Figure 7 As shown, the elastic sliding mechanism 5 further includes a second connecting block 54, a second mounting block 55, and a second sliding assembly 56. The second connecting block 54 is connected to the output end of the first driving member 1, the second mounting block 55 is disposed on the second connecting block 54, and the second pressure sensor 4 is disposed on the second mounting block 55. The second sliding assembly 56 is slidably disposed on the second connecting block 54 along the second direction Y. The second pressure-holding head 22 is connected to the second sliding assembly 56, and the second pressure-holding head 22 can elastically abut against the product 10 under the action of the second sliding assembly 56. The second sliding assembly 56 can abut against the second pressure sensor 4; wherein the first direction X and the second direction Y are set at an angle. In some optional embodiments, the angle between the first direction X and the second direction Y is an acute angle, that is, the first direction X and the second direction Y are not perpendicular.

[0053] By setting the second connecting block 54, a connection with the first driving component 1 can be achieved. The second mounting block 55 and the second sliding assembly 56 can be mounted on the second connecting block 54, thereby enabling the second mounting block 55, the second connecting block 54, and the second sliding assembly 56 to move in the same direction and synchronously. By setting the second mounting block 55, the second pressure sensor 4 can be mounted on the second mounting block 55, and then on the second connecting block 54, to detect the pressure of the second pressure-holding head 22. By setting the second sliding assembly 56, a slidable connection between the second pressure-holding head 22 and the second connecting block 54 is achieved. This also allows the second pressure-holding head 22 to elastically abut against the product 10, reducing the risk of hard contact between the second pressure-holding head 22 and the product 10, thereby reducing the risk of damage to the product 10 and improving reliability.

[0054] In at least one embodiment, a second adjusting screw (not shown in the figure) is provided on the second mounting block 55. The second pressure sensor 4 is connected to the second adjusting screw. The relative position of the second pressure sensor 4 and the second mounting block 55 in the second direction Y can be adjusted by the second adjusting screw. Since the second rod 563 abuts against the second pressure sensor 4, the pressure of the second pressure holding head 22 can be precisely adjusted by the cooperation of the second adjusting screw, the second rod 563, the second elastic element 562 and the second slider 561, so as to suit different needs or different application scenarios.

[0055] In some embodiments, the second connecting block 54 can be slidably connected to the back plate to improve the reliability of movement in the second direction Y. The second connecting block 54 can be directly connected to the output end of the first driving member 1, or it can be indirectly connected to the output end of the first driving member 1; this embodiment does not limit this.

[0056] Optionally, when a fixed plate 57 is provided, the second connecting block 54 is fixedly connected to the fixed plate 57. That is, both the first connecting block 51 and the second connecting block 54 are connected to the fixed plate 57, realizing the synchronous movement of the first connecting block 51 and the second connecting block 54 through a single driving component. This reduces the number of driving components required, lowers the cost of the pressure holding device, and saves the space required.

[0057] In some embodiments, please continue to see Figure 7The second sliding assembly 56 includes a second slider 561, a second elastic element 562, and a second rod 563. The second connecting block 54 has a second limiting block 541 disposed opposite to the second mounting block 55 in the second direction Y. For example, both the second limiting block 541 and the second mounting block 55 are located on the side of the second connecting block 54 away from the fixed plate 57. The second limiting block 541 limits the movement limit of the second sliding assembly 56 when it moves away from the second mounting block 55. The second slider 561 is slidably connected to the second connecting block 54 in the second direction Y and is located between the second mounting block 55 and the second limiting block 541, thereby limiting the range of movement in the second direction Y by the second mounting block 55 and the second limiting block 541. The second slider 561 has a second sliding hole 5611, and one end of the second rod 563 can slidably pass through the second sliding hole 5611. The length direction of the second rod 563 is the second direction Y. The other end of the second rod is provided with a second protrusion 5631, which can abut against the second pressure sensor 4. The second elastic member 562 is sleeved on the second rod 563, and one end of the second elastic member 562 abuts against the second protrusion 5631, and the other end abuts against the second slider 561. The second pressure holding head 22 is connected to the second slider 561.

[0058] By providing a second elastic element 562, with the elastic deformation direction of the second elastic element 562 being the second direction Y, the second pressure-holding head 22 achieves elastic contact with the product 10, further reducing the risk of damaging the product 10 and improving the reliability of the pressure-holding function of the product 10. Optionally, the second elastic element 562 can be a MISUMI UM6-30 spring with a spring constant of 2.9 N / mm.

[0059] Optionally, the second sliding hole 5611 can be a stepped hole, comprising a coarse section (not shown in the figure) and a fine section (not shown in the figure). The coarse section is closer to the second mounting block 55 than the fine section. The second rod 563 is slidably inserted through the coarse and fine sections. One end of the second elastic member 562, facing away from the second protrusion 5631, is disposed in the coarse section, and the end of the second elastic member 562 abuts against the stepped surface of the coarse section, thereby achieving contact with the second slider 561.

[0060] In this embodiment, the second pressure-holding head 22 is connected to the side of the second slider 561 opposite to the second connecting block 54. For example... Figure 7 As shown, the second pressure-holding head 22 is provided with a fourth sliding hole 221. The length direction of the fourth sliding hole 221 is perpendicular to the second direction Y and the thickness direction of the second slider 561, that is, the length direction of the fourth sliding hole 221 is the width direction of the second slider 561. After the fixing member passes through the fourth sliding hole 221, it is detachably connected to the second slider 561, so that the position of the second pressure-holding head 22 relative to the second slider 561 in the length direction of the fourth sliding hole 221 is adjustable, thereby improving flexibility and versatility.

[0061] In some optional embodiments, the end of the second pressure-holding head 22 that contacts the product 10 may be provided with a second buffer block 222 (e.g., using SUS304+ESD80° urethane adhesive). The second buffer block 222 serves both anti-static and buffering functions. In other embodiments, the end of the second pressure-holding head 22 that contacts the product 10 may be designed with a 2mm overpressure protection allowance to protect the product 10. Exemplarily, the second buffer block 222 is capable of providing a 2mm overpressure protection allowance.

[0062] In one or more embodiments of this application, please continue to refer to Figure 7 The pressure-holding device also includes a second driving member 6. The second driving member 6 is disposed on the second connecting block 54, and the second driving member 6 and the second slider 561 are located on the same side of the second connecting block 54. The second driving member 6 drives the second sliding assembly 56 to move in a direction away from the second pressure-holding region 102; that is, the second driving member 6 drives the second slider 561 to move in the second direction Y in a direction away from the second pressure-holding region 102, so that the second pressure-holding head 22 moves away from the second pressure-holding region 102. Optionally, the second driving member 6 can be a cylinder or other linear drive component. For example, the second driving member 6 can be an Airtac MU10*6S.

[0063] It should be noted that the second driving component 6 is electrically connected to the control system, which is configured to control the second driving component 6 to open and close when needed, so that the second pressure holding head 22 contacts the product 10 with a delay. In this embodiment, the delay in contact between the second pressure holding head 22 and the product 10 means that the second pressure holding head 22 contacts the product with a delay compared to the first pressure holding head 21, so that the first pressure holding head 21 and the second pressure holding head 22 do not contact the product simultaneously, but rather the first pressure holding head 21 contacts the product 10 first, and the second pressure holding head 22 contacts the product 10 later.

[0064] With this configuration, the first pressure-holding head 21 first contacts the first pressure-holding area 101, and then the second pressure-holding head 22 contacts the second pressure-holding area 102 under the action of the second elastic member 562. This reduces the risk of the second pressure-holding head 22 directly contacting the product 10 and damaging the speaker unit of the product 10, thereby improving the reliability and safety of pressure holding and reducing the scrap rate.

[0065] In some alternative embodiments, such as Figure 1 , Figure 8 and Figure 9 As shown, the pressure-holding device also includes a support mechanism 7. The support mechanism 7 is used to support the product 10, and can further improve the pressure-holding efficiency by supporting multiple products 10.

[0066] For example, such as Figure 9As shown, the bearing mechanism 7 includes a rotating component 71, a rotating drive component 72, and at least two carriers 73 (such as...). Figure 1 (As shown). At least two carriers 73 are disposed on the rotating member 71. The rotation drive member 72 drives the rotating member 71 to rotate, thereby driving the at least two carriers 73 to move between the upper and lower material positions and the pressure holding position. The carriers 73 are used to carry the product 10. Optionally, the rotating member 71 can be a rotating plate, and the carriers 73 are disposed on the rotating plate. The rotating member 71 can be rotatably disposed on the housing 8. For example, the housing 8 has a through hole 81, and the rotating member 71 can be rotatably disposed in the through hole 81.

[0067] For example, such as Figure 1 and Figure 3 As shown, there are two carriers 73 in this embodiment, which are arranged back to back. When the product 10 on one carrier 73 is being held at the pressure holding position, the product 10 on the other carrier 73 can be loaded or unloaded at the loading and unloading positions to improve efficiency.

[0068] In some embodiments, the rotary drive 72 in this embodiment may be a motor or other component capable of driving the rotary drive 71 to rotate; this embodiment does not limit this.

[0069] Optionally, a cam divider can be connected between the rotary drive 72 and the rotary component 71. The cam divider model can be 60DF-T-90, with a repeatability of ±45° and an accuracy error of ±0.0125°. This enables high-precision indexing and positioning.

[0070] In some embodiments, the pressure-holding device may further include a photoelectric sensor, for example, the photoelectric sensor is disposed on the back panel of the housing 8. The photoelectric sensor serves as a barcode scanning and identification module for reading the barcode information of the product 10.

[0071] In use, the pressure-holding device provided in this embodiment first places a product 10 on a platform. Then, the control system controls the rotation drive 72 to rotate 180 degrees. After scanning the code by a photoelectric sensor and confirmation by the control system, the first drive 1 drives the first pressure-holding head 21 and the second pressure-holding head 22 to descend for pressure holding. After pressure holding is completed, the first drive 1 drives the first pressure-holding head 21 and the second pressure-holding head 22 to rise, and the rotation 71 returns to its initial position. Then, the product 10 is replaced, and the above steps are repeated to achieve pressure holding of the product 10.

[0072] More specifically, the operator places a product 10 on one of the carriers 73 on the rotating component 71 and starts the equipment. Then, the rotating component 71 is controlled to rotate 180°, delivering the product 10 to the pressure-holding position, where a photoelectric sensor reads the workpiece information. The control system (e.g., a MES system) verifies the product 10 information; if OK, the pressure-holding process continues; if the product 10 information is NG, the rotating component 71 returns to its initial position. Next, the lead screw of the first drive component 1 rotates, thereby causing the fixed plate 57 to descend, which in turn causes the first pressure-holding head 21 and the second pressure-holding head 22 to descend for pressure holding. The pressure holding time is 10 seconds, and the pressure is 20±2N. During the pressure holding process, the control system uses the pressure feedback from the first pressure sensor 3 corresponding to the first pressure-holding head 21 as the displacement trigger condition. When the pressure of the first pressure holding head 21 reaches the first pressure range, the control system immediately activates the second drive component 6 to retract its output end. At this time, the second pressure holding head 22, pushed by the second elastic component 562, elastically contacts the second pressure holding area 102 of the product 10. The system monitors the pressure of the second pressure holding head 22 in real time and ensures that the pressure values ​​of the two pressure holding heads are always maintained within the set preset threshold (e.g., 1N) through closed-loop control. If the system detects that the pressure is about to reach the upper or lower pressure limit, the system program activates the automatic compensation function to always maintain a stable output pressure.

[0073] It should also be noted that the pressure sensor monitors the pressure curve in real time, comprehensively collecting peak, trough, and real-time process data, and simultaneously uploading it to the control system. The control system accurately marks the locations of all abnormal data, providing precise data support for subsequent in-depth analysis and process optimization. Simultaneously, the pressure holding data is uploaded to the customer's designated website for storage, allowing the customer to analyze process parameters and troubleshoot anomalies with accurate data. After pressure holding is completed, the pressure holding head rises, the rotating part 71 resets, and the operator changes the workpiece. Simultaneously, at another carrier 73, the loading and unloading of another product 10 is performed, achieving parallel operation at two workstations.

[0074] This embodiment also provides a control method for a pressure-holding device, applied to the aforementioned pressure-holding device. The control method for the pressure-holding device provided in this embodiment can improve the pressure-holding effect of the two pressure-holding zones of product 10.

[0075] In at least one embodiment, the control method for the pressure-holding device includes the following steps: S1. The control system controls the first driving component 1 to start, and the first driving component 1 drives the first pressure holding head 21 and the second pressure holding head to move synchronously along the first direction X. The control system acquires the pressure data of the first pressure sensor 3 and the second pressure sensor 4 in real time. S2. The control system performs comprehensive deviation calculations based on the pressure data; S3. The control system controls the first drive component 1 to operate according to the result of the comprehensive deviation calculation, so that the pressure of the first pressure holding head 21 is in the first pressure range, the pressure of the second pressure holding head 22 is in the second pressure range, and the difference between the pressure of the first pressure holding head 21 and the pressure of the second pressure holding head 22 is controlled within a preset threshold.

[0076] The control method for the pressure-holding device provided in this embodiment uses a first driving component 1 to simultaneously drive the first pressure-holding head 21 and the second pressure-holding head 22 to apply pressure to the product 10, reducing the control difficulty. The first driving component 1 is controlled to move based on the result of comprehensive deviation calculation, so that the pressure of the first pressure-holding head 21 is within the first pressure range and the pressure of the second pressure-holding head 22 is within the second pressure range. The pressure difference between the two pressure-holding heads can be controlled within a preset threshold, thereby achieving the purpose of balancing the pressure in the two pressure-holding areas. This makes the pressure-holding effect of the two pressure-holding areas more uniform, avoids the problem of large differences in the pressure-holding effect between the two pressure-holding areas, and improves the overall yield of the product 10.

[0077] It should be noted that initialization and target setting can be performed before step S1. Specifically, the target pressure of both pressure holding heads is set to 20N, the allowable pressure tolerance of each pressure holding head is set to ±2N, and the maximum allowable pressure difference between the pressure of the first pressure holding head 21 and the pressure of the second pressure holding head 22 is set to 1N. In addition, it is also necessary to control the drive to return to zero to ensure the consistency of its starting position.

[0078] In some optional implementations, step S2 includes the following steps: S21. Calculate the average pressure based on the pressure data. The average pressure is the arithmetic average of the pressure of the first pressure holding head 21 and the pressure of the second pressure holding head 22. In step S21, the control system reads the pressure data from the first pressure sensor 3 and the second pressure sensor 4 in real time, and then calculates the average pressure based on the pressure data from the first pressure sensor 3 and the second pressure sensor 4. For example, if the pressure data from the first pressure sensor 3 is 20N, it means the pressure of the first pressure holding head 21 is 20N; if the pressure data from the second pressure sensor 4 is 22N, it means the pressure of the second pressure holding head 22 is 22N. Therefore, in step S21, the average pressure is 21N.

[0079] S21. Determine the comprehensive control deviation according to the control deviation formula, which is: F = a × (P0 - Pj) + b × (P1 - P2). Where F represents the comprehensive control deviation, a represents the average pressure weighting coefficient, and a > 0.5; P0 represents the target pressure, Pj represents the average pressure, b represents the pressure difference weighting coefficient, and b < a; P1 represents the pressure of the first pressure holding head 21, and P2 represents the pressure of the second pressure holding head 22.

[0080] In this embodiment, the control system determines the comprehensive control deviation according to the control deviation formula, and the control system determines the average pressure based on the pressure data of the first pressure sensor 3 and the second pressure sensor 4.

[0081] It should be noted that the comprehensive control deviation incorporates the states of the first pressure holding head 21 and the second pressure holding head 22. The average pressure weighting coefficient 'a' is used to adjust the control system's emphasis on achieving the average pressure target. For example, the average pressure weighting coefficient 'a' can be 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, etc., and this embodiment does not limit this value. The pressure difference weighting coefficient 'b' is used to adjust the control system's emphasis on the pressure balance between the two pressure holding heads. For example, the pressure difference weighting coefficient 'b' can be 0.3, 0.35, 0.4, 0.45, 0.48, etc., and this embodiment does not limit this value.

[0082] According to the control deviation formula, the control system actively suppresses the pressure difference between the two pressure holding heads while pursuing the average pressure to meet the target, thereby achieving multi-objective coordination (which can refer to the first pressure holding head 21 and the second pressure holding head 22) under a single actuator (which can refer to a first driving component 1).

[0083] In step S3, the control system controls the first drive component 1 to operate according to the comprehensive control deviation, so that the pressure of the first pressure holding head 21 is in the first pressure range, the pressure of the second pressure holding head 22 is in the second pressure range, and the difference between the pressure of the first pressure holding head 21 and the pressure of the second pressure holding head 22 is controlled within a preset threshold.

[0084] In one or more embodiments of this application, the control system includes a PID controller, and the control method for the pressure-holding device further includes the following steps: In this embodiment, the control system determines the proportional gain increment, integral gain increment, and derivative gain increment based on the overall control deviation and its rate of change. The rate of change of the overall control deviation refers to the change in the overall control deviation per unit time. The proportional gain increment is the proportional gain increment of the overall control deviation; the integral gain increment is the integral gain increment of the overall control deviation; and the derivative gain increment is the derivative gain increment of the overall control deviation.

[0085] After obtaining the proportional gain increment, integral gain increment, and derivative gain increment, the PID controller generates motion control quantity based on the above gain parameters.

[0086] In some optional embodiments, the PID controller can acquire the calculated proportional gain increment, integral gain increment, and derivative gain increment in real time, and generate motion control quantities based on the proportional gain increment, integral gain increment, and derivative gain increment.

[0087] In some embodiments, the control method for the pressure-holding device further includes fuzzy adaptive PID online tuning and decision-making. Specifically, the fuzzy controller inputs are: the overall control deviation and its rate of change.

[0088] Fuzzy rule base design: The rule base consists of a set of "if-then" conditional statements, comprehensively considering pressure level and balance. For example: "If the overall control deviation is large positive and its rate of change is small negative, then the proportional gain increment is large positive": This means that when the average pressure is insufficient and rapidly approaching the target, the control response speed is significantly enhanced. "If the overall control deviation is close to zero but its rate of change is large positive, then the derivative gain increment is large positive": This means that when the pressure is about to overshoot, the control damping is enhanced to suppress overshoot. Special balance rule: "If the absolute value of the pressure difference between the two pressure heads is large positive, then the proportional gain increment is small negative": This means that when the pressures of the two pressure heads are unbalanced, the control response speed is appropriately reduced, and balance adjustment is prioritized. The output of the fuzzy rule base is: proportional gain increment, integral gain increment, and derivative gain increment, used to update the parameters of the PID controller in real time.

[0089] At this time, in step S3, the control system controls the first drive member 1 to move according to the motion control quantity calculated above, so that the pressure of the first pressure holding head 21 is in the first pressure range, the pressure of the second pressure holding head 22 is in the second pressure range, and the difference between the pressure of the first pressure holding head 21 and the pressure of the second pressure holding head 22 is within a preset threshold.

[0090] In some optional embodiments, the updated PID parameters (i.e., proportional gain increment, integral gain increment, and derivative gain increment) are used to calculate the motion control quantity based on the current overall control deviation.

[0091] For example, the motion control quantity in this embodiment can be parameters such as the target position and speed adjustment of the first driving component 1, and this embodiment does not limit this.

[0092] It should be noted that the calculated motion control quantity drives the single first driving component 1 through pulse (or other signal) output, adjusting the overall pressing depth. The key mechanism provided by this application is that, since the two pressure-holding heads are mechanically connected, one action of the first driving component 1 will simultaneously affect the pressure of the first pressure-holding head 21 and the pressure of the second pressure-holding head 22. Therefore, this embodiment, through a carefully designed comprehensive control deviation formula and fuzzy rules, enables the control system to automatically find a "compromise point" so that the pressures of the two first pressure-holding heads 21 and the second pressure-holding head 22 synchronously approach the target pressure.

[0093] In at least one possible implementation, the control method for the pressure-holding device further includes the following steps: Real-time monitoring of the absolute pressure difference between the first pressure holding head 21 and the second pressure holding head 22; If the absolute pressure difference is greater than the maximum allowable pressure difference within the first preset time period, the control system adjusts the pressure balance control weight. If the absolute pressure difference cannot be reduced to below the preset value within the second preset time period, the control system will trigger an alarm.

[0094] It should be noted that the control system monitors the absolute pressure difference between the pressure of the first pressure holding head 21 and the pressure of the second pressure holding head 22.

[0095] In this embodiment, the absolute pressure difference between the first pressure holding head 21 and the second pressure holding head 22 refers to the absolute value of the difference between the pressure of the first pressure holding head 21 and the pressure of the second pressure holding head 22.

[0096] It should be noted that when the absolute pressure difference consistently exceeds the maximum permissible pressure difference within a first preset time period, the control system can automatically adjust the weighting coefficients in the comprehensive control deviation formula. For example, the pressure difference weighting coefficient can be increased, making the control system more focused on "correction." In this embodiment, this process is referred to as "first-level compensation." The first preset time period can be set and input, for example, it can be 2 seconds, 3 seconds, 4 seconds, etc., and this embodiment does not limit it. Optionally, the maximum permissible pressure difference can be 4N, 3.8N, 3.5N, 4.2N, etc., and can be set according to requirements; this embodiment does not limit it.

[0097] If the absolute pressure difference fails to decrease below the preset value within the second preset time period, the control system determines that there may be mechanical misalignment (such as fatigue of the first elastic element 532 or the second elastic element 562, excessive height difference in the first pressure holding area 101 of product 10, excessive height difference in the second pressure holding area 102, etc.). At this time, an alarm is triggered, prompting the operator to perform manual mechanical fine-tuning, such as adjusting the adjusting screw of the corresponding pressure holding head. The second preset time period is longer than the first preset time period; in this embodiment, this process is referred to as "secondary compensation." Secondary compensation is only triggered when primary compensation fails.

[0098] It should be noted that the preset value can also be the same as the preset threshold. For example, the preset value can also be 1N. In other embodiments, the preset value can also be greater than the preset threshold. This embodiment does not limit this. For example, the preset value can be 1N, 1.5N, 2N, 2.5N, 3N, 3.5N, 4N, 4.2N, 4.5N, 4.8N, 5N, etc., and can be set according to needs. This embodiment does not limit this.

[0099] In at least one embodiment, the control method for the pressure-holding device further includes determining a stability condition. The stability condition must be met simultaneously: the pressure of the first pressure-holding head 21 is within a first pressure range, the pressure of the second pressure-holding head 22 is within a second pressure range, and the pressure difference between the pressure of the first pressure-holding head 21 and the pressure of the second pressure-holding head 22 is controlled within a preset threshold.

[0100] Throughout the pressure holding process, time-series data such as the pressure of the first pressure holding head 21, the pressure of the second pressure holding head 22, the pressure difference between the two pressure holding heads, the comprehensive control deviation, the change of weighting coefficient, and alarm records are all uploaded to the control system in real time, forming a complete "pressure-time" process spectrum for quality traceability and big data analysis.

[0101] In some optional embodiments, when the pressure-holding device further includes a second driving member 6, the control method of the pressure-holding device further includes, before controlling the first driving member 1 to start, the control system controls the second driving member 6 to drive the second pressure-holding head 22 to move in a direction away from the second pressure-holding region 102. This arrangement ensures that the distance between the second pressure-holding head 22 and the second pressure-holding region 102 in the first direction X is greater than the distance between the first pressure-holding head 21 and the first pressure-holding region 101 in the first direction X, thereby guaranteeing that the second pressure-holding head 22 contacts the product 10 with a delay.

[0102] In some embodiments, after the first pressure-holding head 21 contacts the first pressure-holding region 101, the control system controls the second drive member 6 to reset (e.g., controls the output end of the second drive member 6 to retract), and the second pressure-holding head 22 contacts the second pressure-holding region 102 under the push of the second elastic member 562, and applies pressure to the second pressure-holding region 102. This configuration reduces the risk of the second pressure-holding head 22 accidentally damaging the product 10 and improves the reliability of the pressure-holding device.

[0103] The control method for the pressure-holding equipment provided in this embodiment achieves dual-path coordination with a single actuator: through an innovative "comprehensive control deviation" strategy, only one drive unit (i.e., the first drive component 1) is needed to effectively coordinate the pressure of the two pressure-holding heads, significantly reducing the cost and mechanical complexity of the pressure-holding equipment. Intelligent balance control: the control algorithm incorporates pressure balance optimization logic, which can automatically identify and suppress pressure imbalances caused by mechanical installation errors and uneven thickness of the incoming material 10, improving the consistency of product 10. Hierarchical compensation mechanism: it provides two levels of compensation (i.e., first-level compensation and second-level compensation)—adaptive adjustment of software parameters and early warning of mechanical misalignment—forming a complete closed loop from instantaneous adjustment to long-term maintenance, ensuring the stability and accuracy of the pressure-holding equipment throughout its entire lifecycle. Clear problem diagnosis and predictive maintenance: by analyzing historical patterns and trends of pressure difference exceeding limits, it can effectively distinguish between instantaneous process fluctuations and long-term mechanical performance drift, providing data support for predictive maintenance and reducing unplanned downtime.

[0104] The technical effects achievable by this application include at least the following: high production efficiency, mainly reflected in the alternating operation of dual carriers, with a theoretical cycle time of 29 seconds and a production capacity of 248 pieces / hour. Quality traceability: photoelectric sensor scanning combined with a control system (such as a MES system) enables full-process quality traceability and error prevention; precise pressure control: the first drive component 1, combined with two pressure sensors in closed-loop control, maintains pressure accuracy within ±2N, preventing damage to product 10; high level of intelligence: data interaction with the control system (such as a MES system) supports real-time monitoring and data analysis; good safety: the ends of the first and second pressure-holding heads 21 and 22 that contact product 10 feature a flexible pressure head design, combined with an overpressure protection scheme to prevent product 10 from being damaged; the first and second pressure-holding heads 21 and 22 are also designed with anti-static properties to protect sensitive electronic components.

[0105] Obviously, the above embodiments of this application are merely examples for clear illustration and are not intended to limit the implementation of this application. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A pressure-holding device, characterized in that, include: First driving component; The pressure holding mechanism includes a first pressure holding head and a second pressure holding head. The first pressure holding head and the second pressure holding head are respectively connected to the first driving member through an elastic sliding mechanism and move along a first direction under the drive of the first driving member. The first pressure holding head is used to apply pressure to a first pressure holding area of ​​the product, and the second pressure holding head is used to apply pressure to a second pressure holding area of ​​the product. The first pressure holding area and the second pressure holding area are offset in the first direction. The first pressure sensor is used to detect the pressure of the first pressure holding head in real time; The second pressure sensor is used to detect the pressure of the second pressure holding head in real time; The control system is electrically connected to the first drive unit, the first pressure sensor, and the second pressure sensor. The control system is used to acquire pressure data and control the difference between the pressure of the first pressure holding head and the pressure of the second pressure holding head to be within a preset threshold.

2. The pressure-holding device according to claim 1, characterized in that, The elastic sliding mechanism includes a first connecting block, a first mounting block, and a first sliding assembly. The first connecting block is connected to the output end of the first driving member, the first mounting block is disposed on the first connecting block, and the first pressure sensor is disposed on the first mounting block. The first sliding assembly is slidably disposed on the first connecting block along the first direction, the first pressure holding head is connected to the first sliding assembly, and the first pressure holding head elastically abuts against the product under the action of the first sliding assembly. The first sliding assembly can abut against the first pressure sensor. The elastic sliding mechanism further includes a second connecting block, a second mounting block, and a second sliding assembly. The second connecting block is connected to the output end of the first driving member, the second mounting block is disposed on the second connecting block, and the second pressure sensor is disposed on the second mounting block. The second sliding assembly is slidably disposed on the second connecting block along a second direction, the second pressure holding head is connected to the second sliding assembly, and the second pressure holding head elastically abuts against the product under the action of the second sliding assembly. The second sliding assembly can abut against the second pressure sensor. The first direction and the second direction are set at an angle.

3. The pressure-holding device according to claim 2, characterized in that, The first sliding assembly includes a first slider, a first elastic element, and a first rod. The first connecting block is provided with a first limiting block disposed opposite to the first mounting block in the first direction. The first slider is slidably connected to the first connecting block and located between the first mounting block and the first limiting block. The first slider is provided with a first sliding hole. One end of the first rod can be slidably inserted through the first sliding hole. The other end of the first rod is provided with a first protrusion that can abut against the first pressure sensor. The first elastic element is sleeved on the first rod, and one end of the first elastic element abuts against the first protrusion and the other end abuts against the first slider. The first pressure holding head is connected to the first slider. The second sliding assembly includes a second slider, a second elastic element, and a second rod. The second connecting block is provided with a second limiting block disposed opposite to the second mounting block in the second direction. The second slider is slidably connected to the second connecting block and located between the second mounting block and the second limiting block. The second slider is provided with a second sliding hole. One end of the second rod can slide through the second sliding hole, and the other end of the second rod is provided with a second protrusion that can abut against the second pressure sensor. The second elastic element is sleeved on the second rod, and one end of the second elastic element abuts against the second protrusion, while the other end abuts against the second slider. The second pressure-holding head is connected to the second slider.

4. The pressure-holding device according to claim 2, characterized in that, It also includes a second driving member, which is disposed on the second connecting block and is used to drive the second sliding assembly to move in a direction away from the second pressure-holding area; The second drive unit is electrically connected to the control system, which is configured to control the opening and closing of the second drive unit so that the second pressure-holding head contacts the product with a delay.

5. The pressure-holding device according to claim 1, characterized in that, It also includes the load-bearing mechanism; The bearing mechanism includes a rotating component, a rotating drive component, and at least two carriers. The at least two carriers are disposed on the rotating component. The rotating drive component is used to drive the rotating component to rotate, so that the at least two carriers switch between the upper / lower material position and the pressure holding position.

6. A control method for a pressure-holding device, characterized in that, The pressure-holding device described in any one of claims 1-5, wherein the control method for the pressure-holding device comprises the following steps: The control system controls the first driving component to start, and the first driving component drives the first pressure holding head and the second pressure holding head to move synchronously. The control system acquires the pressure data of the first pressure sensor and the second pressure sensor in real time. The control system performs a comprehensive deviation calculation based on the pressure data; The control system controls the first drive component to operate based on the comprehensive deviation calculation result, so that the pressure of the first pressure holding head is within the first pressure range, the pressure of the second pressure holding head is within the second pressure range, and the difference between the pressure of the first pressure holding head and the pressure of the second pressure holding head is controlled within a preset threshold.

7. The control method for the pressure-holding device according to claim 6, characterized in that, The control system performs a comprehensive deviation calculation based on the pressure data from the first and second pressure sensors, including the following steps: The average pressure is calculated based on the pressure data, and the average pressure is the arithmetic average of the pressure of the first pressure holding head and the pressure of the second pressure holding head. The overall control deviation is determined according to the control deviation formula, which is: F = a × (P0 - Pj) + b × (P1 - P2), where F represents the comprehensive control deviation, a represents the average pressure weighting coefficient, and a > 0.5; P0 represents the target pressure, Pj represents the average pressure, b represents the pressure difference weighting coefficient, and b < a; P1 represents the pressure of the first pressure holding head, and P2 represents the pressure of the second pressure holding head. The control system controls the first drive component to operate according to the comprehensive control deviation, so that the pressure of the first pressure holding head is within the first pressure range, the pressure of the second pressure holding head is within the second pressure range, and the difference between the pressure of the first pressure holding head and the pressure of the second pressure holding head is less than or equal to 1N.

8. The control method for the pressure-holding device according to claim 7, characterized in that, The control system includes a PID controller, and the control method further includes the following steps: Based on the comprehensive control deviation and its rate of change, determine the proportional gain increment, integral gain increment, and derivative gain increment; The PID controller generates motion control quantities based on the aforementioned gain parameters. The control system adjusts the action of the first drive component according to the motion control quantity.

9. The control method for the pressure-holding device according to claim 7, characterized in that, The control method for the pressure-holding device further includes the following steps: Real-time monitoring of the absolute pressure difference between the first and second pressure-holding heads; If the absolute pressure difference is greater than the maximum permissible pressure difference within a first preset time period, the control system adjusts the pressure balance control weight. If the absolute pressure difference cannot be reduced to below a preset value within a second preset time period, the control system triggers an alarm.

10. The control method for the pressure-holding device according to claim 6, characterized in that, The pressure-holding device includes a second driving component; Before the first driving component is started, the control system controls the second driving component to drive the second pressure holding head to move in a direction away from the second pressure holding area; After the first pressure-holding head contacts the first pressure-holding area, the control system controls the second driving component to reset, and the second pressure-holding head contacts the second pressure-holding area.

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