CN221054102U

CN221054102U - Pressure maintaining jig

Info

Publication number: CN221054102U
Application number: CN202323092865.9U
Authority: CN
Inventors: 彭宇锋; 郭二峰; 付兴刚
Original assignee: Maojia Technology Guangdong Co ltd
Current assignee: Maojia Technology Guangdong Co ltd
Priority date: 2023-11-15
Filing date: 2023-11-15
Publication date: 2024-05-31
Anticipated expiration: 2033-11-15

Abstract

The utility model discloses a pressure maintaining jig, which comprises: the base is detachably connected with a balancing weight; the rolling piece is rotationally connected with the base, moves along the extending direction of the to-be-pressure-maintaining piece and is used for pressing the to-be-pressure-maintaining piece; and the positioning assembly is connected with the base and also contacted with the side wall of the to-be-maintained pressure piece. The pressure maintaining jig provided by the technical scheme of the utility model can provide certain pressure maintaining force and improve the pressure maintaining effect of connection of two products.

Description

Pressure maintaining jig

Technical Field

The utility model relates to the technical field of pressure maintaining, in particular to a pressure maintaining jig.

Background

The main stream fixing mode of the liquid crystal screen in the comprehensive screen product market is that the screen sealing adhesive is fixed, the firmness of the screen sealing adhesive is influenced by the surface performance of the adhesive surface and the pressure maintaining mode, and the fixing reliability of the liquid crystal screen is determined. In the production process, the pressure maintaining operation is required to be carried out after the screen sealing glue is adhered, so that the screen sealing glue is ensured to be completely adhered to the component.

At present, in the screen sealing adhesive pressure maintaining process, the pressure maintaining force required by the screen sealing adhesive is influenced by the operation factors of staff, and the problems that the screen sealing adhesive is not firmly adhered and the pressure maintaining effect is poor easily occur.

Disclosure of utility model

The utility model aims to provide a pressure maintaining jig which aims to firmly adhere screen sealing glue to a screen mounting frame so as to improve the firmness of screen adhesion.

In order to achieve the above object, the present utility model provides a pressure maintaining jig, which includes:

the base is detachably connected with a balancing weight;

The rolling piece is rotationally connected with the base, moves along the extending direction of the to-be-pressure-maintaining piece and is used for pressing the to-be-pressure-maintaining piece; and

The positioning assembly is connected with the base and also contacts with the side wall of the pressure maintaining piece to be maintained.

Optionally, the locating component includes regulating plate and locating plate, the regulating plate with the base is connected, locating plate one end with the regulating plate is connected, and the other end is towards deviating from the direction of base extends, the locating plate with wait the lateral wall contact of pressurize piece.

Optionally, the pressure maintaining jig further comprises a connecting piece, wherein the connecting piece is connected with the base and the balancing weight, and the connecting piece is further connected with the adjusting plate.

Optionally, the adjusting plate is provided with an adjusting hole, and the connecting piece passes through the adjusting hole and is connected to the base.

Optionally, the base is provided with a groove, and the adjusting plate is arranged in the groove.

Optionally, the rolling element is connected with a rotating shaft, and the rotating shaft is rotationally connected with the base.

Optionally, the base is equipped with two spliced poles at least, two the spliced pole interval sets up, the rolling element is located two between the spliced pole, the pivot with the spliced pole is connected.

Optionally, the rolling elements are respectively connected to two ends of the base in the moving direction.

Optionally, one of the balancing weight and the base is provided with at least one positioning column, and the other one of the balancing weight and the base is provided with at least one positioning hole, and when the balancing weight is connected with the base, the positioning column is accommodated in the positioning hole.

Optionally, the base is provided with a connecting hole, and the connecting piece passes through the connecting hole and is connected with the balancing weight.

According to the technical scheme, the balancing weight is arranged on the base, the self weight of the base and the balancing weight applies pressure to the piece to be pressurized, an operator pushes the base or the balancing weight, the base and the balancing weight are driven to move through rotation of the rolling piece, and the rolling piece rolls the piece to be pressurized. Because base and balancing weight dead weight apply pressure to waiting the pressurize piece, reach the pressurize effect under the condition that need not the manual pressing, and then guarantee to wait the pressurize effect of pressurize piece. The positioning assembly is connected with the base and synchronously moves along with the base, the positioning assembly is contacted with the side wall of the piece to be pressurized, the moving direction of the rolling piece can be limited, the rolling piece is ensured to be contacted with the piece to be pressurized all the time in the moving process, and the pressurizing effect is further ensured. In addition, through the dismouting change different balancing weights, can adjust pressure maintaining device's dead weight to realized the convenient adjustment to the pressurize dynamics, improved pressure maintaining device's suitability.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a pressure maintaining jig according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a pressure maintaining jig according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of an explosion structure of an embodiment of the pressure maintaining jig of the present utility model;

Fig. 4 is a schematic diagram of an explosion structure of an embodiment of the pressure maintaining jig of the present utility model.

Reference numerals illustrate:

Reference numerals	Name of the name	Reference numerals	Name of the name
				100	Base seat	500	Positioning assembly
110	Connecting column	510	Adjusting plate
				120	Connecting hole	511	Adjusting hole
200	Balancing weight	520	Positioning plate
				300	Connecting piece	600	Positioning column
400	Rolling element	610	Positioning hole
				410	Rotating shaft

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a pressure maintaining jig.

In the prior art, the main stream fixing mode of the liquid crystal screen in the comprehensive screen product market is that the screen sealing adhesive is stuck and fixed, and the firmness degree of the screen sealing adhesive is influenced by the surface performance of the sticking surface and the pressure maintaining mode, so that the fixing reliability of the liquid crystal screen is determined. In the production process, the pressure maintaining operation is required to be carried out after the screen sealing glue is pasted, the screen sealing glue is ensured to be completely pasted on the component, the pasting position of the screen sealing glue is not fixed aiming at different products, the pressure maintaining force required by the screen sealing glue is influenced by the operation factors of staff, and the pressure maintaining in place cannot be ensured.

In order to solve the technical problems, the technical scheme of the utility model is that the base is provided with the balancing weight, the dead weights of the base and the balancing weight apply pressure to the to-be-pressure maintaining piece, an operator pushes the base or the balancing weight, the base and the balancing weight are driven to move through the rotation of the rolling piece, and the rolling piece rolls the to-be-pressure maintaining piece. Because base and balancing weight dead weight apply pressure to waiting the pressurize piece, reach the pressurize effect under the condition that need not the manual pressing, and then guarantee to wait the pressurize effect of pressurize piece. The positioning assembly is connected with the base and synchronously moves along with the base, the positioning assembly is contacted with the side wall of the piece to be pressurized, the moving direction of the rolling piece can be limited, the rolling piece is ensured to be contacted with the piece to be pressurized all the time in the moving process, and the pressurizing effect is further ensured. In addition, through the dismouting change different balancing weights, can adjust pressure maintaining device's dead weight to realized the convenient adjustment to the pressurize dynamics, improved pressure maintaining device's suitability. And the operator only plays a role in guiding the pressure maintaining device to travel, so that the labor intensity of the operator can be reduced, the labor cost is reduced, the pressure maintaining effect difference caused by different proficiency of the operator can be eliminated, the dead weight of the pressure maintaining device is constant, the force application strength of each pressure maintaining part to be maintained is ensured to be consistent, the pressure maintaining stability is improved, the risks of damage to components caused by overlarge force application and unstable attachment caused by overlarge force application are avoided, and the product quality is improved.

The above technical scheme is described in detail below with reference to the accompanying drawings.

In an embodiment of the present utility model, as shown in fig. 1 to 4, the pressure maintaining jig includes:

the base 100, the base 100 is detachably connected with a balancing weight 200;

The rolling piece 400 is rotationally connected with the base 100, and the rolling piece 400 is used for pressing the to-be-pressure maintaining piece; and

The positioning assembly 500, the positioning assembly 500 is connected with the base 100, and the positioning assembly 500 is also contacted with the side wall of the piece to be pressurized. In this embodiment, the positioning assembly 500 is not limited, for example, the top surface of the positioning assembly 500 is connected with the bottom surface of the base 100 and avoids the rolling member 400, one end of the positioning assembly 500 protrudes toward the member to be maintained, and the protruding portion contacts with the sidewall of the member to be maintained, so that the moving direction of the rolling member 400 can be limited, and the portion without rolling or crushing other components can be avoided.

In the specific implementation process, the balancing weight 200 may be connected to the base 100 through a threaded fastener, and in addition, may be connected to the base 100 through a pin, a buckle, adhesion, magnetic attraction, and the like, so that the balancing weight 200 may be convenient for disassembling and replacing the balancing weight 200. The number and weight of the balancing weights 200 can be flexibly set according to the pressure maintaining force and the requirement of the product to be maintained so as to adapt to different requirements.

The outer circumferential surface of the rolling member 400 contacts the product to be pressurized, and the base 100 moves along the product to be pressurized by the rotation of the rolling member 400. Wherein, the shape, the number and the installation position of the rolling elements 400 can be flexibly set according to the specification size and the distribution position of the elements to be maintained; the rolling piece 400 can be a ball with a spherical structure or a roller with a columnar structure, so that the rolling piece 400 moves along a product to be pressurized in a rolling manner, friction between the rolling piece 400 and the product is reduced, and the rolling piece is simple in structure and convenient to operate on the basis of ensuring the pressure maintaining effect of the product to be pressurized. In addition, the rolling element 400 can be in a common wheel shape with smaller wheel width, so that the installation positions of the rolling element 400 on the base 100 are respectively set for the to-be-pressure maintaining elements in different positions, and the rolling element 400 and other irrelevant devices are prevented from being interfered to damage the devices while pressure maintaining operation is completed; the rolling member 400 may be configured as a roller with a larger wheel width, so as to increase the pressing area, and thus, the pressure maintaining operation may be performed on a plurality of members to be maintained in a larger area at the same time, and the pressure maintaining operation on the members to be maintained with a larger volume may also be performed. In a specific implementation process, in order to ensure the pressure maintaining effect of the product to be maintained and to facilitate operation, the extending distance of the outer peripheral surface of the rolling element 400 in the axial direction of the rolling element is not less than the width of the area to be maintained of the product to be maintained, so that the rolling element 400 is ensured to effectively cover the product to be maintained, and the pressure maintaining effect is improved.

In this embodiment, the pressure maintaining jig is used for applying pressure to a product to be maintained to maintain the pressure of the product. Specifically, if the products to be pressure-maintained are two products adhered to each other or two products connected to each other by vacuum adsorption, the method is not limited in this embodiment. The balancing weight 200 and the base 100 provide a certain pressure to the rolling element 400, so that the rolling element 400 is pressed to the product to be pressurized, and further the pressure required by the product to be pressurized is provided, so that the two products are fastened and connected. In a specific implementation process, two products in the product to be pressure-maintained are adhered to each other, the balancing weight 200 has a certain gravity, and the gravity of the base 100 is added to enable the base 100 to press against one of the products, so that the pressure-maintaining force for connecting the two products is provided, and the two products are fastened and adhered. It can be appreciated that the driving manner of the rolling member 400 for rolling and moving along the product to be pressurized may be driven by the driving mechanism to move, or may be manually driven to move, which is not limited in this embodiment. In the specific implementation process, the operator pushes the pressure maintaining block, and the driving force for the pressure maintaining device is used for enabling the rolling element 400 to rotate and move along the product to be maintained, so that the operator only plays a role in guiding the pressure maintaining device to move, and the pressure maintaining effect difference caused by different proficiency of the operator and incapability of controlling the application of proper pressure maintaining force by the operator can be avoided. Therefore, the balancing weight 200 can ensure that the force application strength of each to-be-maintained part tends to be consistent, so that the pressure maintaining stability is improved, the risks of damage to components caused by overlarge force application and infirm attachment caused by overlarge force application are avoided, and the product quality is improved.

In practice, for example, a screen of a liquid crystal display needs to be adhered and fixed on a frame by using a double-sided adhesive, and the double-sided adhesive is firstly adhered on the frame, and then the screen is adhered with the screen sealing adhesive. The pressurize tool of this embodiment is used for making the screen sealing glue fastening paste on the frame, improves the fastness that the screen sealing was glued and is pasted, and then guarantees the fastness that the screen pasted. Specifically, the operator only needs to push the balancing weight 200 or the base 100 lightly, and drives the base 100 and the balancing weight 200 to move along the extending direction of the screen sealing glue through the rotation of the rolling element 400, so that the rolling element 400 rolls the screen sealing glue, and the dead weights of the balancing weight 200, the base 100 and the rolling element 400 apply pressure to the screen sealing glue, so that the pressure maintaining effect is achieved under the condition of no manual pressing. The screen is pasted in the region that the frame surrounds, seals the gluey bonding of screen on the step face of the inside wall of frame, and locating component 500 contacts with the lateral wall of frame to the direction of movement of restriction rolling member 400, and then make rolling member 400 follow always and seal the gluey removal of screen, further guarantee the pressurize effect and guarantee to seal the gluey effect of pasting with the frame of screen.

Further, the positioning assembly 500 includes an adjusting plate 510 and a positioning plate 520, the adjusting plate 510 is connected with the base 100, one end of the positioning plate 520 is connected with the adjusting plate 510, the other end extends towards the direction away from the base 100, and the positioning plate 520 contacts with the side wall of the piece to be maintained.

In practice, the base 100 is driven to move along the length extending direction of the product to be pressurized, and the product to be pressurized is firmly adhered under the action of the balancing weight 200, but when the base 100 moves along the length extending direction of the product to be pressurized, side movement easily occurs, that is, the base is deviated towards the width direction of the product to be pressurized, so as to affect the pressurizing effect. In this embodiment, the positioning assembly 500 is configured to limit the deviation of the base 100, so that the base 100 always moves along the extending direction of the product to be pressure-maintaining, thereby ensuring the pressure-maintaining effect.

The adjusting plate 510 is connected with the base 100 and is arranged on one side of the base 100 facing the product to be pressurized, and the distance between the positioning plate 520 and the base 100 in the horizontal direction is adjusted by adjusting different positions of the adjusting plate 510, so that the product to be pressurized with different sizes is adapted, and the compatibility of the pressurizing jig is improved. In practice, the position of the product to be pressure-maintained has a certain distance from the edge of the product to be pressure-maintained, and the distances of the products to be pressure-maintained with different sizes are different. In this embodiment, the positioning plate 520 is connected to the adjusting plate 510, the positioning plate 520 faces the product to be pressurized and contacts with the edge of the product to be pressurized, and the positioning plate 520 moves along the edge of the product to be pressurized to limit the base 100 from being shifted during the movement. When the base 100 is driven to move along the product to be pressurized, the positioning plate 520 limits the moving direction of the base 100, so as to realize the limiting effect. In addition, in order to improve the strength of the positioning assembly 500, the positioning plate 520 and the adjusting plate 510 are integrally formed.

Optionally, the pressure maintaining fixture further includes a connecting member 300, the connecting member 300 connects the base 100 and the balancing weight 200, and the connecting member 300 is further connected with the adjusting plate 510. In this embodiment, the base 100 and the balancing weight 200 are connected by the connecting piece 300, the connecting piece 300 may be a screw or a pin, etc. which can be detached, for example, the connecting piece 300 is a screw, and the screw may pass through the base 100 and be locked on the balancing weight 200, so as to connect the two. Of course, the connector 300 may be provided in only one or in plurality, and may be adaptively selected according to the actual circumstances. In this embodiment, the connecting member 300 is provided with one and is connected to the center of the base 100 and the weight 200 to ensure the balance of the applied pressure.

Further, the adjusting plate 510 is provided with an adjusting hole 511, and the connector 300 passes through the adjusting hole 511 and is connected to the base 100. Based on the above-mentioned connecting piece 300 passing through the base 100 and locking on the balancing weight 200, the adjusting plate 510 is provided with an adjusting hole 511, and the connecting piece 300 passes through the adjusting hole 511 and is connected with the base 100. Specifically, the adjusting hole 511 is a long hole, the length extending direction of the long hole is perpendicular to the extending direction of the base 100, the connecting piece 300 passes through the adjusting hole 511 to be connected with the base 100, and the connecting piece 300 also passes through the base 100 to be connected with the balancing weight 200, so that the positioning component 500, the base 100 and the balancing weight 200 are connected through the connecting piece 300, and the fastening positions of the connecting piece 300 and the adjusting hole 511 are different, so that the distance between the positioning plate 520 and the base 100 in the horizontal direction is adjusted, different products are further suitable, and the compatibility of the pressure maintaining jig is improved.

In an implementation, the adjustment plate 510 may be directly coupled to the bottom surface of the base 100 and move along the bottom surface. In this embodiment, the base 100 is provided with a groove, and the adjusting plate 510 is disposed in the groove. The grooves play a role in limiting and guiding the movement of the adjusting plate 510, and can also prevent the adjusting plate 510 from rotating when the connecting piece 300 rotates and locks, so that the adjusting plate 510 can be adjusted conveniently.

Further, the rolling member 400 is connected to a rotation shaft 410, and the rotation shaft 410 is rotatably connected to the base 100. It can be understood that the rotating shaft 410 is located on the axis of rotation of the rolling member 400, and the rolling member 400 rotates with the rotating shaft 410 as the rotation center and moves along the product to be pressurized by rotating itself. In an embodiment, the rotating shaft 410 is fixedly connected with the rolling element 400, and two ends of the rotating shaft 410 extend out of the rolling element 400 and are connected with the base 100, and it can be understood that the rotating shaft 410 and the base 100 can be connected through bearings. In another embodiment, the rotating shaft 410 is connected to the rolling element 400 through a bearing, and the rotating shaft 410 is fixedly connected to the base 100.

In a specific implementation process, the base 100 is provided with at least two connecting columns 110, the two connecting columns 110 are arranged at intervals, the rolling element 400 is arranged between the two connecting columns 110, and the rotating shaft 410 is connected with the connecting columns 110. Specifically, one end of the connecting column 110 is connected with the base 100, the other end extends in a direction away from the base 100, and the two connecting columns 110 are arranged at intervals, so that an accommodating space is formed between the two connecting columns 110, the rolling element 400 is arranged in the accommodating hole element, two ends of the rotating shaft 410 are respectively connected with the corresponding connecting columns 110, and a connecting line of the two connecting columns 110 is perpendicular to the moving direction of the base 100. In practice, in order to ensure the stability and strength of the base 100, the connecting post 110 and the base 100 are integrally formed.

It will be appreciated that the rolling elements 400 may be provided in one group and disposed in a middle position of the base 100, and that the rolling elements 400 may be provided in two groups, respectively connected to the base 100. In practice, the base 100 contacts with the product to be pressurized through the rolling member 400, and in order to ensure stability and balance of the base 100, in this embodiment, two ends of the base 100 in the moving direction are connected with the rolling member 400 respectively.

Specifically, in the direction in which the base 100 moves along the product to be maintained, the base 100 includes a first end and a second end opposite to each other, and both the first end and the second end are connected to two groups of connecting posts 110 on a side facing the product to be maintained, and are respectively connected to a rolling member 400, where the two rolling members 400 enable the base 100 to be supported at both the first end and the second end, and the rotation directions of the two rolling members 400 are consistent, so as to ensure the balance of the base 100.

Optionally, one of the balancing weight 200 and the base 100 is provided with a positioning column 600, and the other one is provided with a positioning hole 610, and the positioning column 600 is accommodated in the positioning hole 610.

In this embodiment, the positioning post 600 is disposed on a side of the balancing weight 200 facing the base 100, and the positioning post 600 extends out of the surface of the balancing weight 200. The positioning column 600 may be integrally provided with the balancing weight 200, or may be screwed or adhered to the balancing weight 200. The positioning hole 610 is formed in the base 100, and when the counterweight 200 is connected with the base 100, the positioning column 600 is accommodated in the positioning hole 610 to perform a positioning function. It should be understood that the positioning post 600 may also be disposed on the base 100, and the positioning hole 610 is correspondingly formed on the balancing weight 200, which will not be described in detail in this embodiment.

Further, the base 100 is provided with a connecting hole 120, the connecting piece 300 passes through the connecting hole 120 and is connected with the balancing weight 200, and the positioning column 600 and the positioning hole 610 are respectively provided with at least two groups and are respectively arranged at two sides of the connecting hole 120. The connecting piece 300 is connected with the base 100 and the balancing weight 200, in this embodiment, the connecting piece 300 is a connecting screw, and the connecting piece 300 is screwed on the balancing weight 200 after passing through the base 100. In a specific implementation process, the base 100 is provided with a connecting hole 120, and the connecting piece 300 passes through the connecting hole 120 and is connected with the balancing weight 200, so that the fixing of the base and the balancing weight is realized. The connecting hole 120 is disposed between the two positioning holes 610, and can also play a limiting role, so as to prevent the balancing weight 200 from shifting or rotating when the connecting piece 300 is connected with the balancing weight 200.

When the pressure maintaining jig is used, the rolling piece 400 is in contact with a product to be maintained, the positioning plate 520 is always in contact with the edge of the product to be maintained, the base 100 is driven to move along the extending direction of the product to be maintained, the positioning plate 520 is driven to move along the edge of the product to be maintained under the action of the base 100, the balancing weight 200 presses the base 100 under the action of gravity, and the product to be maintained is pressed through the rolling piece 400 so as to achieve the pressure maintaining effect of the product to be maintained.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. The utility model provides a pressurize tool, its characterized in that, pressurize tool includes:

the base is detachably connected with a balancing weight;

2. The pressure maintaining jig according to claim 1, wherein the positioning assembly comprises an adjusting plate and a positioning plate, the adjusting plate is connected with the base, one end of the positioning plate is connected with the adjusting plate, the other end extends towards a direction away from the base, and the positioning plate is in contact with the side wall of the to-be-maintained pressure piece.

3. The pressure maintaining jig of claim 2, further comprising a connector connecting the base with the weight and the connector with the adjusting plate.

4. The pressure maintaining jig of claim 3, wherein the adjusting plate is provided with an adjusting hole, and the connecting piece passes through the adjusting hole and is connected to the base.

5. The pressure maintaining jig according to any one of claims 2 to 4, wherein the base is provided with a groove, and the adjusting plate is disposed in the groove.

6. The pressure maintaining jig according to claim 1, wherein the rolling member is connected with a rotating shaft, and the rotating shaft is rotatably connected with the base.

7. The pressure maintaining jig according to claim 6, wherein the base is provided with at least two connecting columns, the two connecting columns are arranged at intervals, the rolling element is arranged between the two connecting columns, and the rotating shaft is connected with the connecting columns.

8. The pressure maintaining jig according to claim 6 or 7, wherein both ends in the moving direction of the base are respectively connected with the rolling members.

9. The pressure maintaining jig according to claim 1, wherein one of the balancing weight and the base is provided with at least one positioning column, and the other one of the balancing weight and the base is provided with at least one positioning hole, and the positioning column is accommodated in the positioning hole when the balancing weight is connected with the base.

10. The pressure maintaining jig according to claim 3, wherein the base is provided with a connection hole, and the connection member passes through the connection hole and is connected with the balancing weight.