Pressure maintaining device

Abstract

The utility model relates to the technical field of pressure maintaining tools, aims to solve the technical problem that some known pressure maintaining tools are poor in universality, and provides a pressure maintaining device which comprises a mounting assembly, an upper pressure maintaining assembly, a first quick release assembly, a first driving device, a lower pressure maintaining assembly and a second quick release assembly. The mounting assembly comprises a first mounting plate. The upper pressure maintaining assembly is arranged on the first mounting plate. The first quick release assembly is detachably connected with the first mounting plate and the upper pressure maintaining assembly. The first driving device is arranged on the mounting assembly. The lower pressure maintaining assembly and the upper pressure maintaining assembly are arranged at an interval, the lower pressure maintaining assembly is in transmission connection with the first driving device, the lower pressure maintaining assembly can be driven by the first driving device to be close to or away from the upper pressure maintaining assembly, and the side, facing the upper pressure maintaining assembly, of the lower pressure maintaining assembly is used for bearing a target part. The second quick release assembly is detachably connected with the first driving device and the lower pressure maintaining assembly. The pressure maintaining device has the beneficial effect that the universality of the pressure maintaining device is improved.

Description

Technical Field

[0001] This application relates to the field of pressure holding tooling technology, and more specifically, to pressure holding devices. Background Technology

[0002] As product iteration speed increases, some known pressure holding fixtures are unable to meet the pressure holding requirements of multiple products. Utility Model Content

[0003] This application provides a pressure-holding device to solve some technical problems of poor versatility of known pressure-holding tooling.

[0004] This application provides a pressure-holding device, including a mounting assembly, an upper pressure-holding assembly, a first quick-release assembly, a first driving device, a lower pressure-holding assembly, and a second quick-release assembly. The mounting assembly includes a first mounting plate. The upper pressure-holding assembly is disposed on the first mounting plate. The first quick-release assembly is detachably connected to the first mounting plate and the upper pressure-holding assembly. The first driving device is disposed on the mounting assembly. The lower pressure-holding assembly is spaced apart from the upper pressure-holding assembly, and is throttle-connected to the first driving device. The lower pressure-holding assembly can move closer to or further away from the upper pressure-holding assembly under the drive of the first driving device. The side of the lower pressure-holding assembly facing the upper pressure-holding assembly is used to support a target component. The second quick-release assembly is detachably connected to the first driving device and the lower pressure-holding assembly.

[0005] According to the pressure-holding device of this application, during operation, the upper pressure-holding component is connected to the mounting component via a first quick-release component, and the lower pressure-holding component is connected to the first driving device via a second quick-release component. The first driving device drives the lower pressure-holding component closer to the upper pressure-holding component, and the first driving device applies a pressure-retaining force against the target component through the lower pressure-holding component. This ensures that the upper and lower pressure-holding components reliably apply pressure to the target component, achieving a pressure-holding effect. When the type of the target component changes, other models of the upper pressure-holding component can be quickly replaced via the first quick-release component, and other models of the lower pressure-holding component can be quickly replaced via the second quick-release component. This convenient and reliable installation and removal significantly improves the versatility of the pressure-holding device. Furthermore, both the upper and lower pressure-holding components have high replacement efficiency, thereby reducing the overall pressure-holding process time for the target component and improving the pressure-holding production efficiency of the target component.

[0006] In one possible implementation:

[0007] The mounting assembly further includes a second mounting plate and a connector; the second mounting plate is located on the side of the lower pressure holding assembly opposite to the upper pressure holding assembly, the first driving device is connected to the second mounting plate, and the connector connects the first mounting plate and the second mounting plate.

[0008] In one possible implementation:

[0009] The first mounting plate has a clearance hole. The upper pressure holding assembly includes an upper pressure holding plate and a pressure holding head. The upper pressure holding plate is detachably connected to the first mounting plate via the first quick-release assembly. The pressure holding head is connected to the side of the upper pressure holding plate facing the lower pressure holding assembly and passes through the clearance hole.

[0010] In one possible implementation:

[0011] The upper pressure holding component includes a first positioning part, and the lower pressure holding component includes a second positioning part. During the process of the first driving device driving the lower pressure holding component to approach the upper pressure holding component, the first positioning part can be positioned and cooperated with the second positioning part.

[0012] In one possible implementation:

[0013] The pressure-holding device further includes a first guide assembly, which connects the mounting assembly and the lower pressure-holding assembly, and is used to guide the lower pressure-holding assembly to move in a first direction.

[0014] In one possible implementation:

[0015] The pressure-holding device further includes a second driving device, which is connected to the mounting assembly and is used to drive the mounting assembly to move.

[0016] In one possible implementation:

[0017] The pressure-holding device further includes a base component and a second guide component. The second drive device is disposed on the base component. The second guide component connects the base component and the mounting component, and is used to guide the mounting component to move in a second direction.

[0018] In one possible implementation:

[0019] The first quick-release assembly includes a first quick-release portion and a second quick-release portion. The first quick-release portion is detachably connected to the upper pressure-holding assembly. The first quick-release portion has a through first mating hole, and a first limiting portion protrudes from the hole surface of the first mating hole. The first quick-release portion is connected to the first mounting plate. The side of the second quick-release portion has a limiting groove. The second quick-release portion is used to mate with the first mating hole, and the first limiting portion is used to engage with the limiting groove to limit the first quick-release portion within the second quick-release portion.

[0020] In one possible implementation:

[0021] The second quick-release assembly includes a third quick-release portion and a fourth quick-release portion. The third quick-release portion is detachably connected to the lower pressure-holding assembly. The third quick-release portion has a second mating hole, and a second limiting portion protrudes from the hole surface of the second mating hole. The second limiting portion has a through hole. The fourth quick-release portion is movably connected to the first driving device. One end of the fourth quick-release portion facing the third quick-release portion has a locking portion. The locking portion passes through the through hole and abuts against the second limiting portion to limit the fourth quick-release portion to the third quick-release portion.

[0022] In one possible implementation:

[0023] The lower pressure holding assembly includes a heating element and a support member. The heating element is drively connected to the first driving device. The support member is connected to the side of the heating element opposite to the first driving device, and the support member is used to support the target component. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural schematic diagram of a pressure-holding device according to an embodiment of this application.

[0026] Figure 2 This is a side view of a pressure-holding device according to an embodiment of this application.

[0027] Figure 3 This is an exploded structural diagram of a pressure-holding device according to an embodiment of this application.

[0028] Figure 4 This is a schematic diagram of the exploded structure of a pressure-holding device according to an embodiment of this application from another perspective.

[0029] Figure 5 This is a partial cross-sectional view of the pressure-holding device at the first quick-release assembly according to an embodiment of this application.

[0030] Figure 6 This is a partial exploded structural diagram of a pressure-holding device according to an embodiment of this application.

[0031] Figure 7 This is an exploded view of the second quick-release assembly according to an embodiment of this application.

[0032] Figure 8 This is a schematic diagram of the structure of the third quick-release part according to an embodiment of this application.

[0033] Explanation of key component symbols:

[0034] Pressure holding device 100

[0035] Installation Component 10

[0036] First mounting plate 11

[0037] Connector 12

[0038] Second mounting plate 13

[0039] Upper pressure holding assembly 20

[0040] Upper pressure plate 21

[0041] Pressure holding head 22

[0042] Handle 23

[0043] First Positioning Section 24

[0044] First quick-release component 30

[0045] First quick-release section 31

[0046] First limiting part 311

[0047] Second quick-release section 32

[0048] Protrusion 321

[0049] First driving device 40

[0050] Lower pressure holding assembly 50

[0051] Heating component 51

[0052] Bearing component 52

[0053] Third Positioning Section 53

[0054] Thermal insulation component 54

[0055] Second positioning section 55

[0056] Second quick-release component 60

[0057] Third quick-release section 61

[0058] Second limiting part 611

[0059] Fourth quick-release section 62

[0060] Card Section 621

[0061] Stop part 622

[0062] Mounting bracket 63

[0063] First guiding component 70

[0064] Guide bearing 71

[0065] Guide shaft 72

[0066] Second drive unit 81

[0067] Drive component 811

[0068] First transmission component 812

[0069] Transmission wheel 8121

[0070] 8122 transmission belt

[0071] Second transmission component 813

[0072] Lead screw 8131

[0073] Nut 8132

[0074] Second guide component 82

[0075] Guide rail 821

[0076] Slider 822

[0077] Adapter 83

[0078] Basic component 84

[0079] Fastener 85

[0080] First fixing part 851

[0081] Second fixing part 852

[0082] Via K1

[0083] Avoidance hole K2

[0084] K3

[0085] Positioning hole K4

[0086] First mating hole K5

[0087] Second mating hole K6

[0088] Third mating hole K7

[0089] Limiting groove C1

[0090] Mating groove C2

[0091] First direction X

[0092] Second direction Y

[0093] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0094] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0095] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0096] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0097] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0098] See Figure 1 and Figure 2 This embodiment provides a pressure-holding device 100, including a mounting assembly 10, an upper pressure-holding assembly 20, a first quick-release assembly 30, a first driving device 40, a lower pressure-holding assembly 50, and a second quick-release assembly 60 (see [reference needed]). Figure 2 Mounting assembly 10 includes a first mounting plate 11. An upper pressure-holding assembly 20 is disposed on the first mounting plate 11. A first quick-release assembly 30 is detachably connected to the first mounting plate 11 and the upper pressure-holding assembly 20. A first drive device 40 is disposed on the mounting assembly 10. A lower pressure-holding assembly 50 is spaced apart from the upper pressure-holding assembly 20, and is drively connected to the first drive device 40. The lower pressure-holding assembly 50 can move closer to or further away from the upper pressure-holding assembly 20 under the drive of the first drive device 40. The side of the lower pressure-holding assembly 50 facing the upper pressure-holding assembly 20 is used to carry the target component. A second quick-release assembly 60 is detachably connected to the first drive device 40 and the lower pressure-holding assembly 50.

[0099] According to the pressure-holding device 100 of this embodiment, during operation, the upper pressure-holding component 20 is connected to the mounting component 10 via the first quick-release component 30, and the lower pressure-holding component 50 is connected to the first driving device 40 via the second quick-release component 60. The first driving device 40 drives the lower pressure-holding component 50 closer to the upper pressure-holding component 20, and the first driving device 40 applies a pressure-retaining force against the upper pressure-holding component 20 through the lower pressure-holding component 50 to achieve the pressure-holding effect on the target component. When the type of the target component changes, other models of the upper pressure-holding component 20 can be quickly replaced via the first quick-release component 30, and other models of the lower pressure-holding component 50 can be quickly replaced via the second quick-release component 60. This convenient and reliable installation and removal significantly improves the versatility of the pressure-holding device 100. Furthermore, both the upper pressure-holding component 20 and the lower pressure-holding component 50 have high replacement efficiency, thereby reducing the overall pressure-holding process time for the target component and improving the pressure-holding production efficiency of the target component.

[0100] In some embodiments, see Figure 2 and Figure 3 The mounting assembly 10 also includes a second mounting plate 13 and a connector 12. The second mounting plate 13 is located on the side of the lower pressure holding assembly 50 opposite to the upper pressure holding assembly 20. The first drive device 40 is connected to the second mounting plate 13, and the connector 12 connects the first mounting plate 11 and the second mounting plate 13. Thus, a movement space for the lower pressure holding assembly 50 is formed between the first mounting plate 11 and the second mounting plate 13. The second mounting plate 13 can stably and reliably mount the first drive device 40, thereby improving the reliability of the first drive device 40 driving the movement of the lower pressure holding assembly 50.

[0101] Optionally, the first mounting plate 11 and the second mounting plate 13 are spaced apart along a first direction X. Connectors 12 extend along the first direction X. There are four connectors 12. The four connectors 12 are located at the four corners of the rectangle to improve the connection reliability between the first mounting plate 11 and the second mounting plate 13. Optionally, the lower pressure holding assembly 50 is located within the space enclosed by the four connectors 12, so that the connectors 12 do not affect the movement of the lower pressure holding assembly 50 between the first mounting plate 11 and the second mounting plate 13.

[0102] In some implementations, see Figure 3 A through hole K1 is formed in the second mounting plate 13. The first drive device 40 is connected to the side of the second mounting plate 13 opposite to the first mounting plate 11. The output end of the first drive device 40 passes through the through hole K1 and is connected to the lower pressure holding assembly 50. In this way, the overall compactness of the pressure holding device 100 can be improved, and the first drive device 40 will not interfere with the lower pressure holding assembly 50 during the replacement process, ensuring the reliability of the replacement of the lower pressure holding assembly 50.

[0103] In some embodiments, see Figure 2 and Figure 4 The first mounting plate 11 has a clearance hole K2. The upper pressure holding assembly 20 includes an upper pressure holding plate 21 and a pressure holding head 22. The upper pressure holding plate 21 is detachably connected to the first mounting plate 11 via a first quick-release assembly 30. The pressure holding head 22 is connected to the side of the upper pressure holding plate 21 facing the lower pressure holding assembly 50, and passes through the clearance hole K2. In this way, it can be ensured that the pressure holding head 22 will not be interfered with by the first mounting plate 11 during the cooperation with the lower pressure holding assembly 50, and the pressure holding process of the target part can be carried out reliably.

[0104] Optionally, the upper pressure plate 21 is located on the side of the first mounting plate 11 opposite to the second mounting plate 13, so that the upper pressure plate 21 can be placed directly on the first mounting plate 11, thereby improving the ease of replacement of the upper pressure assembly 20.

[0105] In some embodiments, the pressure holding head 22 is detachably connected to the upper pressure holding plate 21, so as to allow for the replacement of different pressure holding heads 22 according to different types of target parts, further improving the versatility of the pressure holding device 100. In other embodiments, the pressure holding head 22 may also be fixedly connected to the upper pressure holding plate 21.

[0106] In some embodiments, the upper pressure holding assembly 20 also includes a handle 23. The handle 23 is connected to the side of the upper pressure holding plate 21 opposite to the pressure holding head 22. The handle 23 facilitates the lifting and lowering of the upper pressure holding assembly 20, thereby improving the ease of transfer of the upper pressure holding assembly 20.

[0107] In some embodiments, see Figure 2 and Figure 3 The upper pressure holding assembly 20 includes a first positioning part 24. The lower pressure holding assembly 50 includes a second positioning part 55. During the process of the first driving device 40 driving the lower pressure holding assembly 50 closer to the upper pressure holding assembly 20, the first positioning part 24 and the second positioning part 55 can be mutually positioned and engaged. This improves the alignment accuracy of the upper pressure holding assembly 20 and the lower pressure holding assembly 50, thereby improving the directional accuracy of the pressure applied to the target component, reducing the error in the direction of the pressure applied, and thus improving the pressure holding effect on the target component.

[0108] In some implementations, see Figure 3 The first positioning part 24 protrudes from the upper pressure plate 21 along the first direction X. The first mounting plate 11 has a clearance hole K3. The clearance hole K3 is correspondingly provided with the first positioning part 24 so that the first positioning part 24 passes through the clearance hole K3 and cooperates with the second positioning part 55. Optionally, the clearance hole K3 is constructed as a strip hole to meet the installation requirements of the upper pressure assembly 20 with first positioning parts 24 of different sizes.

[0109] In some implementations, see Figure 4The projection of the clearance hole K2 onto the lower pressure holding assembly 50 is located on the outer side of the side of the lower pressure holding assembly 50. In this way, it can be ensured that the lower pressure holding assembly 50 will not collide with the first mounting plate 11 during movement, thus ensuring the reliability of the pressure holding device 100.

[0110] In some implementations, see Figure 3 The second positioning part 55 protrudes from the side of the lower pressure holding assembly 50, and the orthographic projection of the second positioning part 55 along the first direction X is located on the first mounting plate 11. In this way, the second positioning part 55 and the first positioning part 24 can be smoothly positioned and engaged.

[0111] In some implementations, see Figure 3 The second positioning part 55 has a positioning hole K4. The positioning hole K4 penetrates the second positioning part 55 along the first direction X. During the process of the first driving device 40 driving the lower pressure holding component 50 to approach the upper pressure holding component 20, the first positioning part 24 passes through the positioning hole K4 to achieve positioning cooperation between the first positioning part 24 and the second positioning part 55. In other embodiments, the first positioning part 24 may have a positioning groove, and the second positioning part 55 may have a positioning protrusion corresponding to the positioning groove.

[0112] In some embodiments, see Figure 3 The lower pressure holding assembly 50 includes a heating element 51 and a support element 52. The heating element 51 is driveably connected to the first driving device 40. The support element 52 is connected to the side of the heating element 51 opposite to the first driving device 40 and is used to support the target component. In this way, the heating element 51 can release heat during the pressure holding process to heat the target component, thereby achieving the heating and pressure holding function to meet the pressure holding requirements of different target components.

[0113] In some implementations, see Figure 3 The surface of the carrier 52 facing away from the heating element 51 is provided with a third positioning part 53. The third positioning part 53 is used to position the target part. Specifically, the third positioning part 53 can be configured as a positioning protrusion. The target part may include a carrier and a product. The carrier is used to position and cooperate with the third positioning part 53. The product is disposed in the carrier. In this way, a universal carrier can be used to place different types of products, thereby further improving the versatility of the pressure holding device 100. In other embodiments, the third positioning part 53 may also be configured as a positioning groove.

[0114] In some implementations, see Figure 3 The lower pressure holding assembly 50 also includes a heat insulation element 54. The heat insulation element 54 is connected to the side of the heating element 51 away from the support element 52. The heat insulation element 54 is drive-connected to the first drive device 40. The heat insulation element 54 can isolate the heat conducted from the heating element 51 to the first drive device 40, thereby improving the protection of the first drive device 40.

[0115] In some embodiments, see Figure 3 The pressure-holding device 100 also includes an adapter 83. The adapter 83 is connected to the output end of the first drive device 40. Optionally, the heat insulation member 54 is connected to the first drive device 40 via the adapter 83.

[0116] In some embodiments, see Figure 2 and Figure 3 The pressure holding device 100 also includes a first guide assembly 70. The first guide assembly 70 connects the mounting assembly 10 and the lower pressure holding assembly 50, and is used to guide the lower pressure holding assembly 50 to move along a first direction X. In this way, the reliability of the movement of the lower pressure holding assembly 50 along the first direction X can be improved, thereby improving the alignment accuracy of the lower pressure holding assembly 50 and the upper pressure holding assembly 20, and improving the pressure holding quality of the target part.

[0117] In some implementations, see Figure 2 and Figure 3 The first guide assembly 70 includes a guide bearing 71 and a guide shaft 72. The guide bearing 71 is fixed to the second mounting plate 13. The guide shaft 72 is slidably disposed through the guide bearing 71 along a first direction X.

[0118] In some implementations, see Figure 3 The device includes multiple guide bearings 71 and multiple guide shafts 72. Each guide shaft 72 is housed within a corresponding guide bearing 71. Multiple guide bearings 71 are arranged around the through hole K1. The pressure-holding device 100 also includes a fixing member 85. The fixing member 85 is located on the side of the second mounting plate 13 facing away from the first mounting plate 11 along the first direction X. The fixing member 85 connects to the ends of the multiple guide shafts 72 facing away from the second mounting plate 13. The fixing member reduces the possibility of wobbling of the guide shafts 72, thereby improving the reliability of the movement of the multiple guide shafts 72 and further ensuring the guiding effect.

[0119] In some implementations, see Figure 3 The fastener 85 includes multiple first fastening portions 851 and multiple second fastening portions 852. Each end of a first fastening portion 851 is connected to two corresponding guide shafts 72. Each end of a second fastening portion 852 is connected to two corresponding first fastening portions 851. This improves the reliability of the fastener 85 in securing the multiple guide shafts 72.

[0120] In some embodiments, the pressure-holding device 100 is disposed on one side of a production line module (not shown), which is used to transport the target part. See also Figure 4The pressure holding device 100 also includes a second drive device 81. The second drive device 81 is drively connected to the mounting assembly 10 and is used to drive the mounting assembly 10 to move. Thus, the second drive device 81 can drive the mounting assembly 10 to move along the length of the production line module, so that the mounting assembly 10 is aligned with the loading position of the production line module, accurately and reliably adjusting the position of the mounting assembly 10, thereby ensuring that the target part is accurately moved onto the lower pressure holding assembly 50, improving the loading position accuracy of the target part, and thus improving the processing efficiency of the target part.

[0121] In some implementations, see Figure 4 The second driving device 81 includes a driving member 811, a first transmission member 812, and a second transmission member 813. The driving member 811 is driveably connected to one end of the first transmission member 812. One end of the second transmission member 813 is driveably connected to the other end of the first transmission member 812, and the other end of the second transmission member 813 is driveably connected to the second mounting plate 13. The second transmission member 813 is used to move along a second direction Y under the drive of the first transmission member 812, thereby driving the second mounting plate 13 to move along the second direction Y. The second direction Y is perpendicular to or intersects the first direction X at an angle.

[0122] In some embodiments, the drive member 811 is a motor that outputs rotational torque. The first transmission member 812 includes a transmission belt 8122 and two transmission pulleys 8121. The second transmission member 813 includes a lead screw 8131 and a nut 8132. One transmission pulley 8121 is connected to the drive member 811, and the other transmission pulley 8121 is connected to the lead screw 8131. The lead screw 8131 extends along the second direction Y, and the nut 8132 is connected to the side of the second mounting plate 13 opposite to the first mounting plate 11. The lead screw 8131 passes through the nut 8132. Thus, by driving the lead screw 8131 to rotate through the transmission pulley 8121, the nut 8132 can be driven to move the second mounting plate 13 along the second direction Y. The above structure has the advantages of high adjustment accuracy and reliable adjustment.

[0123] In some embodiments, see Figure 4 The pressure-holding device 100 also includes a base component 84 and a second guide component 82. The base component 84 can be configured as an assembly line or a fixed frame. A second drive device 81 is disposed on the base component 84. The second guide component 82 connects the base component 84 and the mounting component 10. The second guide component 82 is used to guide the mounting component 10 to move along a second direction Y. In this way, the position adjustment accuracy of the mounting component 10 can be improved.

[0124] In some implementations, see Figure 4The second guide assembly 82 includes a guide rail 821 and a slider 822. The guide rail 821 extends along the second direction Y and is disposed on the base member 84. The slider 822 is slidably fitted to the guide rail 821 and is connected to the side of the second mounting plate 13 opposite to the first mounting plate 11.

[0125] In some embodiments, see Figure 5 The first quick-release assembly 30 includes a first quick-release part 31 and a second quick-release part 32. The first quick-release part 31 is detachably connected to the pressure plate 21. The first quick-release part 31 has a through first mating hole K5, and a first limiting part 311 protrudes from the hole surface of the first mating hole K5. The first quick-release part 31 is connected to the first mounting plate 11. The side of the second quick-release part 32 has a limiting groove C1. The second quick-release part 32 is used to mate with the first mating hole K5, and the first limiting part 311 is used to engage with the limiting groove C1 to limit the first quick-release part 31 within the second quick-release part 32. Thus, during the assembly of the upper pressure holding component 20, by lowering the upper pressure holding component 20 along the through direction of the first mating hole K5, the second quick-release part 32 can be mated in the first mating hole K5. During the mating process, the first limiting part 311 can be engaged into the limiting groove C1 under the weight of the upper pressure holding component 20, thereby improving the ease of engagement between the first limiting part 311 and the limiting groove C1.

[0126] In some embodiments, the first quick-release assembly 30 may be configured as a pneumatic positioner. A first elastic element (not shown) may be provided inside the second quick-release portion 32 to apply an elastic clamping force between the first quick-release portion 31 and the second quick-release portion 32. An air passage may also be provided inside the second quick-release portion 32, connected to an external air source, to achieve clamping action through air pressure; simultaneously, the air passage can also achieve a jet cleaning effect to remove dust between the first quick-release portion 31 and the second quick-release portion 32; an air jet port may also be provided in the second quick-release portion 32, which cooperates with an airtightness detection device to detect the fit between the first quick-release portion 31 and the second quick-release portion 32.

[0127] In addition, when the pneumatic positioner is powered off or the air supply is cut off, the cooperation between the first limiting part 311 and the limiting groove C1 can also ensure a reliable connection between the first quick-release part 31 and the second quick-release part 32.

[0128] In some embodiments, see Figures 6 to 8The second quick-release assembly 60 includes a third quick-release part 61 and a fourth quick-release part 62. The third quick-release part 61 is detachably connected to the lower pressure holding assembly 50. The third quick-release part 61 has a second mating hole K6, and a second limiting part 611 protrudes from the hole surface of the second mating hole K6. The second limiting part 611 has a through hole K1. The fourth quick-release part 62 is movably connected to the first driving device 40. One end of the fourth quick-release part 62 facing the third quick-release part 61 has a locking part 621. The locking part 621 passes through the through hole K1 and abuts against the second limiting part 611 to limit the fourth quick-release part 62 to the third quick-release part 61.

[0129] In some embodiments, see Figure 6 The fourth quick-release part 62 is movably provided on the adapter 83. The heat insulation part 54 of the lower pressure holding assembly 50 is detachably connected to the adapter 83. In this way, the ease of assembly and disassembly of the lower pressure holding assembly 50 can be improved.

[0130] In some implementations, see Figure 6 and Figure 7 The second quick-release assembly 60 also includes a mounting base 63. The mounting base 63 is detachably connected to the adapter 83. The mounting base 63 has a third mating hole K7. The surface of the mounting base 63 facing the lower pressure holding assembly 50 has a recessed mating groove C2, which extends through and communicates into the third mating hole K7. The fourth quick-release part 62 passes through the third mating hole K7. The side of the fourth quick-release part 62 also has a stop 622. The stop 622 extends into the mating groove C2 to prevent the fourth quick-release part 62 from disengaging from the mounting base 63 in a direction away from the lower pressure holding assembly 50. This improves the ease of installation, removal, and use of the fourth quick-release part 62.

[0131] In some embodiments, the second quick-release assembly 60 may be configured as a rotary lock. A second elastic member (not shown) is provided between the mounting base 63 and the third quick-release portion 61. When the engaging portion 621 abuts against the second limiting portion 611, the second elastic member applies an elastic force to the mounting base 63 toward the fourth quick-release portion 62, thereby further improving the connection reliability between the first drive device 40 and the lower pressure holding assembly 50.

[0132] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A pressure maintaining device, characterized by, The pressure maintaining device comprises: a mounting assembly comprising a first mounting plate; an upper pressure maintaining assembly arranged on the first mounting plate; a first quick-release assembly detachably connecting the first mounting plate and the upper pressure maintaining assembly; a first driving device arranged on the mounting assembly; a lower pressure maintaining assembly arranged apart from the upper pressure maintaining assembly, the lower pressure maintaining assembly being drivingly connected to the first driving device, the lower pressure maintaining assembly being capable of moving towards or away from the upper pressure maintaining assembly under the driving of the first driving device, one side of the lower pressure maintaining assembly facing the upper pressure maintaining assembly being used for bearing a target piece; a second quick-release assembly detachably connecting the first driving device and the lower pressure maintaining assembly.

2. The pressure maintaining device according to claim 1, wherein: the mounting assembly further comprises a second mounting plate and a connecting piece, the second mounting plate being arranged on a side of the lower pressure maintaining assembly away from the upper pressure maintaining assembly, the first driving device being connected to the second mounting plate, and the connecting piece connecting the first mounting plate and the second mounting plate.

3. The pressure maintaining device according to claim 1, wherein: the first mounting plate is provided with a relief hole; the upper pressure maintaining assembly comprises an upper pressure maintaining plate and a pressure maintaining head, the upper pressure maintaining plate being detachably connected to the first mounting plate through the first quick-release assembly, the pressure maintaining head being connected to one side of the upper pressure maintaining plate facing the lower pressure maintaining assembly, and the pressure maintaining head penetrating through the relief hole.

4. The pressure maintaining device according to claim 1, wherein: the upper pressure maintaining assembly comprises a first positioning part, and the lower pressure maintaining assembly comprises a second positioning part, the first positioning part being capable of being positioned and matched with the second positioning part during the process that the first driving device drives the lower pressure maintaining assembly to move towards the upper pressure maintaining assembly.

5. The pressure maintaining device according to claim 1, further comprising a first guide assembly, the first guide assembly being connected to the mounting assembly and the lower pressure maintaining assembly, and being used for guiding the lower pressure maintaining assembly to move in a first direction.

6. The pressure maintaining device according to claim 1, further comprising a second driving device, the second driving device being drivingly connected to the mounting assembly, and being used for driving the mounting assembly to move. the pressure maintaining device further comprises: a base piece, the second driving device being arranged on the base piece; 7. The pressure maintenance device of claim 6, wherein a second guide assembly, the second guide assembly being connected to the base piece and the mounting assembly, and being used for guiding the mounting assembly to move in a second direction. the first quick-release assembly comprises: a first quick-release part, the first quick-release part being detachably connected to the upper pressure maintaining assembly, the first quick-release part being provided with a first matching hole penetrating therethrough, and a first limiting part being protruded from a hole face of the first matching hole; 8. The pressure maintenance device of claim 1, wherein, ​ ​ The second quick release part is connected with the first mounting plate, and a limiting groove is arranged on the side of the second quick release part. The second quick release part is used for being matched with the first matching hole, and the first limiting part is used for being clamped in the limiting groove to limit the first quick release part in the second quick release part.

9. The pressure maintenance device of claim 1, wherein, The second quick release assembly comprises: The third quick release part is detachably connected with the lower pressure maintaining assembly. The third quick release part is provided with a second matching hole. A second limiting part is arranged on the hole face of the second matching hole. The second limiting part is provided with a through hole. The fourth quick release part is movably connected with the first driving device. One end of the fourth quick release part towards the third quick release part is provided with a clamping part. The clamping part is used for penetrating through the through hole and abutting against the second limiting part to limit the fourth quick release part in the third quick release part.

10. The pressure maintenance device of claim 1, wherein, The lower pressure maintaining assembly comprises: The heating assembly is drivingly connected with the first driving device. The bearing member is connected with the side of the heating assembly away from the first driving device. The bearing member is used for bearing the target member.

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