Pressure maintaining device

Abstract

The application discloses a kind of pressure maintaining equipment, wherein, pressure maintaining equipment includes rack, mounting bracket, drive assembly, floating pressure maintaining component and pressure detection component;The mounting bracket is installed in one side of the rack;The drive assembly is installed in the mounting bracket;The floating pressure maintaining component is connected with the drive assembly, and the drive assembly is used to drive the floating pressure maintaining component to move, so that the floating pressure maintaining component compacts material;The pressure detection component is connected with the drive assembly, for detecting the pressure when floating pressure maintaining component compacts material.The technical scheme of the application can increase the uniformity of the pressure provided by the pressure maintaining equipment, to reduce the product failure rate.

Description

Technical Field

[0001] This invention relates to the field of pressure holding equipment technology, and particularly to a pressure holding device. Background Technology

[0002] In mechanical manufacturing, materials are often assembled onto products using adhesive bonding. In the 3C (computer, communication, and consumer electronics) industry, pressure-holding equipment is widely used for assembling adhesive-based products, replacing manual labor in performing demanding pressing actions. This not only facilitates automated production but also improves material quality, significantly reducing the burden on companies. However, current pressure-holding equipment on the market provides uneven pressing force, resulting in inconsistent bonding quality, reduced bonding efficiency, and increased product defect rates. Summary of the Invention

[0003] The main objective of this invention is to provide a pressure-holding device that aims to increase the uniformity of the pressing force provided by the pressure-holding device, thereby reducing the product defect rate.

[0004] To achieve the above objectives, the present invention provides a pressure-holding device comprising:

[0005] frame;

[0006] Mounting bracket, which is mounted on one side of the frame;

[0007] A drive assembly, which is mounted on the mounting bracket;

[0008] A floating pressure-holding assembly, connected to the driving assembly, wherein the driving assembly drives the floating pressure-holding assembly to move, thereby pressing the material with the floating pressure-holding assembly; and

[0009] A pressure detection component, which is connected to the drive component, is used to detect the pressure when the floating pressure holding component presses the material.

[0010] Optionally, the floating pressure holding assembly includes multiple pressure holding heads and a first fixed plate. The first fixed plate is drivenly connected to the driving assembly, which drives the first fixed plate to move in the height direction. The pressure holding head includes a pressure holding block, a linear bearing, and a push rod. The end of the push rod away from the driving assembly is connected to the pressure holding block. The push rod is inserted into the linear bearing and can move along the axial direction of the linear bearing. Multiple linear bearings are all inserted through the first fixed plate.

[0011] Optionally, the pressure holding head further includes an elastic element, which is sleeved on the top rod and located between the linear bearing and the pressure holding block. The elastic element is used to buffer the pressure from the linear bearing.

[0012] Optionally, the elastic element is configured as a spring.

[0013] Optionally, the pressure holding head further includes a first limiting member, which is located at the end of the push rod away from the pressure holding block. The first limiting member can prevent the push rod from coming out from below the linear bearing.

[0014] Optionally, the drive assembly includes a drive cylinder, multiple guide shafts, multiple second limiting members, and a lifting plate. The drive cylinder is mounted on the mounting frame, and the push head of the drive cylinder is connected to the lifting plate. The multiple guide shafts connect the mounting frame to the lifting plate and are movably arranged relative to the mounting frame. The drive cylinder is used to push out and pull back the lifting plate. One of the second limiting members is connected to two of the guide shafts and is located at the end of the two guide shafts away from the lifting plate.

[0015] Optionally, the drive assembly further includes a plurality of lifting rods and a second fixed plate, wherein the plurality of lifting rods are movably connected to the lifting plate, and the other end of each of the plurality of lifting rods is connected to the second fixed plate.

[0016] Optionally, the pressure detection component includes a pressure sensor and a pressure regulating valve. The pressure sensor is located on the side of the lifting plate facing the second fixed plate. When the lifting plate is pressed down, the pressure sensor contacts the second fixed plate to obtain the pressure value when pressed. The pressure regulating valve is installed on the frame and connected to the drive cylinder. The pressure regulating valve can display the air pressure value of the drive cylinder and is used to adjust the air pressure entering the drive cylinder.

[0017] Optionally, the mounting bracket includes a mounting plate and a reinforcing plate. The mounting plate is fixed to the frame, the drive cylinder is mounted on the mounting plate, a plurality of guide shafts pass through the mounting plate, and the reinforcing plate is used to connect the mounting plate and the frame.

[0018] Optionally, the driving component drives the floating pressure-holding component to press the material, and the pressure detection component obtains the pressure value of the floating pressure-holding component pressing the material.

[0019] If the pressure value reaches the set value, the floating pressure holding component will continue to press the material for a preset time and then lift up to complete the pressure holding work;

[0020] If the pressure value does not reach the set value, the floating pressure holding component will lift up and re-press the material. The pressure detection component will then re-acquire the pressure value of the material pressed by the floating pressure holding component. If the pressure value reaches the set value, the floating pressure holding component will continue to press the material for a preset time and then lift up to complete the pressure holding work. If the set value is not reached, the lifting and pressing action and the pressure detection action will continue to be repeated until the pressure value reaches the set value.

[0021] If the pressure value still does not reach the set value after repeating the lifting and pressing actions and pressure detection actions more than the preset number of times, the operation will stop and the input air pressure value in the drive component will be adjusted.

[0022] This invention's technical solution uses a drive component to press a floating pressure-holding component onto the material, adhering the material to the corresponding position on the product. During this process, the floating pressure-holding component maintains pressure on the material. Due to external environmental factors and the cylinder's operating state, the downward pressure may not reach or exceed the preset pressure value when the drive component pushes the floating pressure-holding component down. In this case, a pressure detection component can be used to check if the preset pressure value has been reached. If it has, the pressure is maintained for a period before being lifted and the next set of materials is pressed. If the pressure value has not been reached, the material is lifted and then pressed down again, repeating this lifting and pressing action multiple times until the preset pressure value is reached. This ensures that once the pressure value is met, the floating pressure-holding component is fully pressed onto the material, guaranteeing that the material receives the same pressure at all points, improving the uniformity of the pressure provided by the pressure-holding equipment, and thus reducing the material defect rate. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the pressure-holding device of the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the floating pressure holding assembly;

[0026] Figure 3 for Figure 1 A schematic diagram of the drive assembly, mounting plate, and pressure sensor.

[0027] Explanation of icon numbers:

[0028]

[0029]

[0030] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0034] This invention proposes a pressure-holding device for a material pasting station.

[0035] In embodiments of the present invention, such as Figures 1 to 3 As shown, the pressure-holding device includes a frame 10, a mounting bracket 11, a drive assembly 12, a floating pressure-holding assembly 13, and a pressure detection assembly. The mounting bracket 11 is installed on one side of the frame 10. The drive assembly 12 is installed on the mounting bracket 11. The floating pressure-holding assembly 13 is connected to the drive assembly 12, and the drive assembly 12 is used to drive the floating pressure-holding assembly 13 to move, so that the floating pressure-holding assembly 13 presses the material. The pressure detection assembly is connected to the drive assembly 12 and is used to detect the pressure when the floating pressure-holding assembly 13 presses the material.

[0036] This pressure-holding equipment is installed at the bonding station on the product line. The material is placed on the feeding fixture, which is aligned with the product. The pressure-holding equipment presses down to bond the material to the product and then holds the pressure to ensure that the material does not detach from the product.

[0037] The technical solution of this invention uses a drive component 12 to press a floating pressure-holding component 13 onto the material, adhering the material to the corresponding position on the product. At this time, the floating pressure-holding component 13 performs a pressure-holding action on the material. Due to the influence of the external environment and the working state of the cylinder, when the drive component 12 drives the floating pressure-holding component 13 to press down, the downward pressure may not reach or exceed the preset pressure value. In this case, a pressure detection component can be used to check whether the downward pressure has reached the preset pressure value. If the preset pressure value is reached, the pressure is held for a period of time, then lifted before pressing the next set of materials. If the pressure value is not reached, the material is lifted and then pressed down again, repeating this lifting and pressing action multiple times until the pressure reaches the preset value. By setting the pressure value to the target value, the floating pressure-holding component 13 is completely pressed onto the material, ensuring that the material receives the same pressure at all points, improving the uniformity of the pressure-holding equipment, and thus reducing the material defect rate.

[0038] In one embodiment, the floating pressure holding assembly 13 includes multiple pressure holding heads and a first fixed plate 134. The first fixed plate 134 is drivenly connected to the drive assembly 12. The drive assembly 12 is used to drive the first fixed plate 134 to move in the height direction. The pressure holding head includes a pressure holding block 131, a linear bearing 133, and a push rod 132. One end of the push rod 132 away from the drive assembly 12 is connected to the pressure holding block 131. The push rod 132 is inserted into the linear bearing 133 and can move along the axial direction of the linear bearing 133. Multiple linear bearings 133 are all inserted through the first fixed plate 134.

[0039] Specifically, when the driving assembly 12 drives the first fixing plate 134 to press down, and the multiple pressure-holding blocks 131 press against the working surface, the multiple push rods 132 on the first fixing plate 134 move upward to buffer the multiple pressure-holding blocks 131, preventing the pressure-holding blocks 131 from directly colliding rigidly with the material under a large impact force. In this embodiment, each pressure-holding block 131 has a Teflon gasket on the side facing away from the first fixing plate 134, which can prevent scratches on the material to be pasted. This arrangement can prevent the pressure-holding blocks 131 from directly impacting and damaging the material, and can also increase the service life of the pressure-holding blocks 131 themselves. In some other embodiments, each pressure-holding block 131 has a rubber gasket on the side facing away from the first fixing plate 134.

[0040] In one embodiment, the pressure holding head further includes an elastic element 135, which is sleeved on the top rod 132 and located between the linear bearing 133 and the pressure holding block 131. The elastic element 135 is used to buffer the pressure from the linear bearing 133.

[0041] Specifically, during the pressure-holding action, the elastic element 135 is in a compressed state. The elastic element 135 provides a thrust to the pressure-holding block 131, causing the pressure-holding block 131 to tend towards the material. The elastic element 135 also provides a thrust to the linear bearing 133, buffering the pressure when the linear bearing 133 presses down onto the pressure-holding block 131, preventing direct collision between the linear bearing 133 and the pressure-holding block 131. This configuration increases the return speed of the pressure-holding block 131 after the pressure-holding action, thereby improving the efficiency of the pressure-holding equipment and preventing damage to the linear bearing 133 and the pressure-holding block 131, thus increasing its service life. In other embodiments, one end of the elastic element 135 is connected to the push rod 132, and the other end is connected to the first fixed plate 134, so that the elastic element 135 provides a thrust to the push rod 132, causing the push rod 132 to tend towards one end of the pressure-holding block 131.

[0042] In one embodiment, the elastic element 135 is configured as a spring.

[0043] Specifically, a spring is sleeved on the push rod 132, with one end abutting against the linear bearing 133 and the other end abutting against the upper end of the pressure holding block 131. When the spring is sleeved on the push rod 132, it is kept in a compressed state, so that the elastic element 135 can ensure that the pressure holding head always has a downward tendency. With this arrangement, the spring occupies little space and can be sleeved on the push rod 132, so that the spring can move along the axial direction of the push rod 132 when it moves. In some other embodiments, the elastic element 135 is a rubber ring. The end of the push rod 132 away from the pressure holding block 131 is provided with a groove. One end of the rubber ring is hung in the groove of the push rod 132, and the other end is fixed to the first fixing plate 134. When the pressure holding head presses the material, the upper end of the push rod 132 rises, tightening the rubber ring, so that the rubber ring provides a thrust to the push rod 132, so that the push rod 132 has a downward tendency. After the pressing is completed, the rubber ring returns to its original position, pulling the push rod 132 down.

[0044] In one embodiment, the pressure holding head further includes a first limiting member 136, which is located at the end of the push rod 132 away from the pressure holding block 131. The first limiting member 136 can prevent the push rod 132 from coming off from below the linear bearing 133.

[0045] Specifically, the first limiting member 136 is plate-shaped and disposed at the end of the push rod 132. The cross-sectional area of ​​the first limiting member 136 is larger than the bore diameter of the linear bearing 133. When the push rod 132 falls, the limiting member can abut against the upper end of the linear bearing 133 to prevent the push rod 132 from falling off. This arrangement can prevent the push rod 132 from falling off. In this embodiment, two push rods 132 are installed on one first limiting member 136, which increases the service life, reduces the occurrence of push rod 132 falling off, and reduces the cost of replacement. In some other embodiments, the first limiting member 136 is strip-shaped and extends circumferentially along the push rod 132, located on the outer wall surface of the push rod 132 above the linear bearing 133.

[0046] In one embodiment, the drive assembly 12 includes a drive cylinder 121, a plurality of guide shafts 122, a plurality of second limiting members 123, and a lifting plate 124. The drive cylinder 121 is mounted on the mounting frame 11, and the push head of the drive cylinder 121 is connected to the lifting plate 124. The plurality of guide shafts 122 connect the mounting frame 11 and the lifting plate 124. The plurality of guide shafts 122 are movably arranged relative to the mounting frame 11. The drive cylinder 121 is used to push out and pull back the lifting plate 124. A second limiting member 123 is connected to two guide shafts 122 and is located at the end of the two guide shafts 122 away from the lifting plate 124.

[0047] Specifically, a drive cylinder 121 is installed through the mounting frame 11. Multiple guide shafts 122 are provided on both sides of the drive cylinder 121. In this embodiment, two guide shafts 122 are provided on both sides of the drive cylinder 121. The four guide shafts 122 are movably installed through the mounting frame 11. Therefore, two second limiting members 123 are provided. Two guide shafts 122 are fixed to one second limiting member 123. When the guide shaft 122 moves downward too much, the lower end of the second limiting member 123 can abut against the mounting frame 11, which can prevent the guide shaft 122 from falling off the mounting frame 11. The lower ends of the four guide shafts 122 are all fixedly connected to the lifting plate 124. The push head of the drive cylinder 121 is also connected to the lifting plate 124. With this configuration, when the drive cylinder 121 pushes the lifting plate 124 downward, the guide shaft 122 moves along with the movement of the lifting plate 124, ensuring that the movement of the position connected to the guide shaft 122 is synchronized. This prevents the lifting plate 124 from tilting during descent and improves the uniformity of force distribution during downward pressure. In some other embodiments, there are two guide shafts 122, with each guide shaft 122 located at one end of the drive cylinder 121.

[0048] In one embodiment, the drive assembly 12 further includes a plurality of lifting rods 125 and a second fixing plate 126. The lifting plate 124 is movably connected to the plurality of lifting rods 125, and the other end of each of the plurality of lifting rods 125 is connected to the second fixing plate 126.

[0049] Specifically, in this embodiment, there are four lifting rods 125. These four lifting rods 125 are fixed to the second fixed plate 126 at intervals and are movably mounted on the lifting plate 124. Each is spaced apart from the push head of the drive cylinder 121. When the floating pressure-holding assembly 13 presses the material, the lifting plate 124 moves downwards along the axial direction of the lifting rods 125. This arrangement provides a buffering effect, preventing the lifting plate 124 from directly impacting the second fixed plate 126 and increasing the service life of the drive assembly 12. In other embodiments, one end of each lifting rod 125 is fixed to the lifting plate 124, while the other end is movably connected to the second fixed plate 126.

[0050] In one embodiment, the pressure detection assembly includes a pressure sensor 14 and a pressure regulating valve 15. The pressure sensor 14 is disposed on the side of the lifting plate 124 facing the second fixed plate 126. When the lifting plate 124 is pressed down, the pressure sensor 14 contacts the second fixed plate 126 to obtain the pressure value when it is pressed. The pressure regulating valve 15 is installed on the frame 10 and connected to the drive cylinder 121. The pressure regulating valve 15 can display the air pressure value of the drive cylinder 121 and is used to adjust the air pressure entering the drive cylinder 121.

[0051] Specifically, when the drive assembly 12 drives the floating pressure-holding assembly 13 to press down, the pressure sensor 14 located below the lifting plate 124 abuts against the second fixed plate 126. At this time, the pressure sensor 14 can feed back pressure to the pressure-holding device. After comparison by the computer, if the fed-back pressure value is different from the required pressure value, the pressure regulating valve 15 is used to adjust the air pressure entering the drive cylinder 121 to ensure that the output pressure reaches the preset pressure value. This setting can ensure that the pressure reaches the required value, thereby ensuring the bonding effect and improving the product yield. In some other embodiments, the pressure sensor 14 is located on the side of the lifting plate 124 facing the drive cylinder 121 and directly below the drive cylinder 121. When the drive cylinder 121 drives the lifting plate 124 to descend, the push head of the drive cylinder 121 abuts against the pressure sensor 14 to obtain the pressure value during pressing.

[0052] In one embodiment, the mounting frame 11 includes a mounting plate 111 and a reinforcing plate 112. The mounting plate 111 is fixed to the frame 10, the drive cylinder 121 is mounted on the mounting plate 111, a plurality of guide shafts 122 pass through the mounting plate 111, and the reinforcing plate 112 is used to connect the mounting plate 111 and the frame 10.

[0053] Specifically, there are two reinforcing plates 112. Each reinforcing plate 112 has two straight edges and is located above the mounting plate 111. One straight edge of the reinforcing plate 112 is connected to the frame 10, and the other straight edge is connected to the mounting plate 111. The two reinforcing plates 112 are positioned opposite each other at both ends of the mounting plate 111. This arrangement enhances the installation stability of the mounting plate 111, making the drive assembly more stable during operation. In some other embodiments, the reinforcing plate 112 is located below the mounting plate 111.

[0054] In one embodiment, the driving component 12 drives the floating pressure holding component 13 to press the material, and the pressure detection component obtains the pressure value of the floating pressure holding component 13 pressing the material.

[0055] If the pressure value reaches the set value, the floating pressure holding component 13 will continue to press the material for a preset time and then lift up to complete the pressure holding work;

[0056] If the pressure value does not reach the set value, the floating pressure holding component 13 will lift up and press the material again. The pressure detection component will then re-acquire the pressure value of the material pressed by the floating pressure holding component 13. If the pressure value reaches the set value, the floating pressure holding component 13 will continue to press the material for a preset time and then lift up to complete the pressure holding work. If the set value is not reached, the lifting and pressing action and the pressure detection action will continue to be repeated until the pressure value reaches the set value.

[0057] If the pressure value still does not reach the set value after repeating the lifting and pressing actions and pressure detection actions more than the preset number of times, the operation will stop and the input air pressure value in the drive component 12 will be adjusted.

[0058] Specifically, the pressure value should be determined based on the material to be adhered. The preset time range is greater than or equal to 15 seconds and less than or equal to 45 seconds. The preset time can be 15 seconds, 20 seconds, 25 seconds, 30 seconds, 35 seconds, 40 seconds, or 45 seconds. In this embodiment, the preset time is 30 seconds. If the holding time is less than 30 seconds, the material may not be completely adhered to the product. If the holding time is greater than 30 seconds, it may delay the efficiency of the adhesion and pressure holding process. The preset number of times can be 2, 3, 4, or 5 times. In this embodiment, the preset number of times is 3. If the preset number of times is less than 3, the number of repetitions of the lifting and pressing actions and pressure detection actions is less, resulting in fewer pressure feedbacks. If the preset number of times is greater than 3, it will take more time to adjust the input air pressure, affecting the efficiency of the adhesion and pressure holding process. This setting ensures better adhesion of the material to the product while improving the efficiency of the adhesion and pressure holding process. In some other embodiments, the preset time is 25 seconds and the preset number of times is 2.

[0059] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A pressure-holding device, characterized in that, include: frame; Mounting bracket, which is mounted on one side of the frame; A drive assembly, which is mounted on the mounting bracket; The drive assembly includes a drive cylinder, multiple guide shafts, a lifting plate, multiple lifting rods, and a second fixed plate. The drive cylinder is mounted on the mounting frame, and the push head of the drive cylinder is connected to the lifting plate. The multiple guide shafts connect the mounting frame to the lifting plate. The multiple guide shafts are movably arranged relative to the mounting frame and fixedly connected to the lifting plate. The drive cylinder is used to push out and pull back the lifting plate. Multiple lifting rods are movably connected to the lifting plate, and the other ends of the multiple lifting rods are fixedly connected to the second fixed plate. A floating pressure-holding assembly is connected to a driving assembly. The driving assembly drives the floating pressure-holding assembly to move, thereby pressing the material. The floating pressure-holding assembly includes multiple pressure-holding heads and a first fixed plate, which is drivenly connected to the driving assembly. The driving assembly drives the first fixed plate to move in the height direction. Each pressure-holding head includes a pressure-holding block, a linear bearing, and a push rod. The end of the push rod away from the driving assembly is connected to the pressure-holding block. The push rod is inserted into the linear bearing and can move along the axial direction of the linear bearing. Multiple linear bearings pass through the first fixed plate. A pressure detection component, connected to the drive component, is used to detect the pressure when the floating pressure holding component presses the material; the pressure detection component includes a pressure sensor, which is disposed on the side of the lifting plate facing the second fixed plate. When the lifting plate is pressed down, the pressure sensor contacts the second fixed plate to obtain the pressure value during pressing. The driving component drives the floating pressure holding component to press the material, and the pressure detection component obtains the pressure value of the floating pressure holding component pressing the material. If the pressure value reaches the set value, the floating pressure holding component will continue to press the material for a preset time and then lift up to complete the pressure holding work; If the pressure value does not reach the set value, the floating pressure holding component will lift up and re-press the material. The pressure detection component will then re-acquire the pressure value of the material pressed by the floating pressure holding component. If the pressure value reaches the set value, the floating pressure holding component will continue to press the material for a preset time and then lift up to complete the pressure holding work. If the set value is not reached, the lifting and pressing action and the pressure detection action will continue to be repeated until the pressure value reaches the set value. If the pressure value still does not reach the set value after repeating the lifting and pressing actions and pressure detection actions more than the preset number of times, the operation will stop and the input air pressure value in the drive component will be adjusted.

2. The pressure-holding device as described in claim 1, characterized in that, The pressure holding head also includes an elastic element, which is sleeved on the top rod and located between the linear bearing and the pressure holding block. The elastic element is used to buffer the pressure from the linear bearing.

3. The pressure-holding device as described in claim 2, characterized in that, The elastic element is configured as a spring.

4. The pressure-holding device as described in claim 1, characterized in that, The pressure holding head also includes a first limiting member, which is located at the end of the push rod away from the pressure holding block. The first limiting member can prevent the push rod from coming out from below the linear bearing.

5. The pressure-holding device as described in claim 1, characterized in that, The drive assembly further includes a plurality of second limiting members, one of which is connected to the two guide shafts and located at the end of the two guide shafts away from the lifting plate.

6. The pressure-holding device as described in claim 5, characterized in that, The pressure detection assembly also includes a pressure regulating valve, which is mounted on the frame and connected to the drive cylinder. The pressure regulating valve can display the air pressure value of the drive cylinder and is used to adjust the air pressure entering the drive cylinder.

7. The pressure-holding device as described in claim 5, characterized in that, The mounting frame includes a mounting plate and a reinforcing plate. The mounting plate is fixed to the frame, the drive cylinder is mounted on the mounting plate, a plurality of guide shafts pass through the mounting plate, and the reinforcing plate is used to connect the mounting plate and the frame.

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