WO2022067997A1

WO2022067997A1 - Pressure maintaining and correction mechanism and correction method of same

Info

Publication number: WO2022067997A1
Application number: PCT/CN2020/128573
Authority: WO
Inventors: 缪磊; 袁文卿; 章朝阳; 王坤
Original assignee: 苏州富强科技有限公司
Priority date: 2020-09-30
Filing date: 2020-11-13
Publication date: 2022-04-07
Also published as: CN112356494A; CN112356494B

Abstract

A pressure maintaining and correction mechanism, comprising a correction plate (654) provided with a correction through hole (6543) penetrating upper and lower surfaces; a circumferential pressure maintaining assembly formed by arranging at least two circumferential pressure maintaining heads in a surrounding manner, the outer side of each circumferential pressure maintaining head being fixedly connected with a pressure maintaining skirt (6521) extending outward; and at least two circumferential balancing weights (6562). The correction plate (654) is arranged on the periphery of the circumferential pressure maintaining assembly by means of the correction through hole (6543), so that the pressure maintaining skirts (6521) are projected to the upper surface of the correction plate (654); the upper surface of the correction plate (654) is provided with at least two pressure sensing components arranged around the correction through hole (6543), and the pressure sensing components are located right below the pressure maintaining skirts (6521); and each circumferential balancing weight (6562) presses the top of a corresponding circumferential pressure maintaining head, so that the pressure maintaining skirts (6521) press the pressure sensing components. Further provided is a correction method of the pressure maintaining and correction mechanism. The pressure maintaining skirts (6521) having a large area press the correction plate (654) on which the pressure sensing components are arranged, so that the detection result is more intuitive to facilitate accurate correction.

Description

A pressure-maintaining correction mechanism and a correction method for the pressure-maintaining correction mechanism

technical field

The invention relates to the field of non-standard automation, in particular to a pressure-maintaining correction mechanism, and in particular to a correction method for the pressure-maintaining correction mechanism.

Background technique

In the field of non-standard automation, in order to ensure the quality of pressing, it is always well known to adopt the method of holding pressure. In the process of researching and realizing the pressure holding of the workpiece, the inventor found that there are at least the following problems in the process of calibrating the pressure holding head before the pressure holding process in the prior art:

First of all, the calibration accuracy is difficult to guarantee, especially for the indenter with a small pressure-holding area, due to its own small pressure-holding area, when there is a certain deviation of the pressure-holding head, the force area under normal conditions is different from the deviation. The area does not change much, so that the pressure value under the unit area does not change significantly. For some testing equipment, it is difficult to detect the pressure value change generated in the above situation, so that the operator cannot correct it according to the testing equipment. Correction, resulting in a decrease in accuracy, thereby affecting production quality.

In view of this, it is necessary to develop a pressure maintaining correction mechanism to solve the above problems.

SUMMARY OF THE INVENTION

Aiming at the deficiencies of the prior art, the main purpose of the present invention is to provide a pressure maintaining correction mechanism, which can enlarge the pressure by equivalently replacing the pressure at the pressure head position to the pressure maintaining skirt with a larger area The change trend of the pressure value is convenient for the operator to intuitively understand the position of the pressure-holding head, and then accurately correct the pressure-holding head.

Another object of the present invention is to provide a pressure-maintaining correction mechanism, which detects the position of the central pressure-maintaining rod through a push assembly, thereby comprehensively detecting the position of the pressure-maintaining head, thereby improving the pressure-maintaining accuracy.

The invention provides a pressure maintaining correction mechanism, comprising:

The calibration plate is provided with calibration through holes penetrating the upper and lower surfaces of the calibration plate;

a circumferential pressure-maintaining assembly formed by at least two circumferential pressure-maintaining heads arranged around them, and an outwardly extending pressure-maintaining skirt is fixed to the outer side of each of the circumferential pressure-maintaining heads; and

At least two circumferential weights;

Wherein, the calibration plate is sleeved on the outer periphery of the circumferential pressure maintaining component through the calibration through hole, so that the pressure maintaining skirt is projected on the upper surface of the calibration plate; the upper surface of the calibration plate is provided with at least two A pressure sensing component is arranged around the calibration through hole, and the pressure sensing component is located directly below the pressure-holding skirt; each piece of the circumferential counterweight presses down a corresponding piece of the circumferential pressure-holding head The top of the pressure-retaining skirt presses down on the pressure-sensing component.

Preferably, the upper surface of the calibration plate is provided with a pressure-bearing groove arranged around the calibration through hole, and the pressure sensing component is arranged in the pressure-bearing groove; when the pressure-maintaining skirt is pressed down on the The pressure-retaining skirt is at least partially received in the pressure-receiving groove when over the pressure sensing member.

Preferably, the circumferential arrangement of the circumferential pressure-maintaining head makes the shape and lateral dimension of the pressure-retaining groove fit with the edge of the pressure-retaining skirt. When placed on the sensing part, the edge of the pressure-retaining skirt is defined by the side wall of the pressure-receiving groove.

Preferably, the bottom surface of the pressure-bearing groove extends upward to form a circumferential pressure-bearing bump corresponding to the position of the pressure sensing component;

The pressure sensing component is mounted on the top surface of the circumferential pressure-bearing bump, and the pressure-maintaining skirt is press-fitted on the circumferential pressure-bearing bump.

Preferably, it also includes a central pressure maintaining rod, and the circumferential pressure maintaining head is arranged around the outer circumference of the central pressure maintaining rod;

The top end of the central pressure maintaining rod is provided with a central counterweight block, and the central counterweight block is pressed down on the central pressure maintaining rod so that the central pressure maintaining rod is pressed down on the central pressure sensing component.

Preferably, it also includes a pressure-maintaining support frame, and the calibration plate is arranged on the upper surface of the pressure-maintaining support frame;

The top of the pressure maintaining support frame is provided with a pressure maintaining through hole penetrating its upper and lower surfaces, the pressure maintaining support frame is provided with a push component located directly below the pressure maintaining through hole, and the central pressure maintaining rod Press down on the top of the ejector assembly.

Preferably, the push assembly includes a push plate and a lift driver drivingly connected with the push plate;

The upper surface of the push plate is provided with a central pressure-bearing bump for receiving the central pressure sensing component, and the lift driver drives the push plate to lift, so that the central pressure-holding rod is pressed on the central pressure-bearing member bump.

Preferably, when each piece of the circumferential counterweight is pressed down on the top end of the corresponding piece of the circumferential pressure maintaining head and the central counterweight is pressed down on the top of the central pressure maintaining rod, the central pressure maintaining The bottom of the rod protrudes downward from the bottom of the circumferential pressure holding head.

Preferably, there are two groups of the circumferential pressure maintaining heads, which are symmetrically arranged with respect to the central pressure maintaining rod.

The present invention also provides a calibration method for the pressure maintaining calibration mechanism as described above, comprising:

1) The pressure-holding skirt is pressed down on the corresponding pressure-sensing component on the calibration plate, and the position of the circumferential pressure-holding head is adjusted according to the detection result obtained on the pressure-sensing component;

2) While implementing 1), the lift driver pushes the push plate provided with the pressure detection element, so that the central pressure sensing member on the push plate pushes the central pressure maintaining rod to lift, and adjusts the detection result obtained on the central pressure sensing member. The location of the center pressure-holding rod.

Compared with the prior art, the beneficial effects of the present invention are:

The invention provides a pressure maintaining correction mechanism, which can amplify the changing trend of the pressure value by equivalently replacing the pressure at the position of the circumferential pressure maintaining head to the pressure maintaining skirt with a larger area, thereby facilitating the operator to intuitively understand the pressure maintaining The position of the head, and then the pressure-maintaining head is accurately corrected to meet the demand of the block for the pressure-holding pressure.

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, and implement it according to the content of the description, the preferred embodiments of the present invention are described in detail below with the accompanying drawings. Specific embodiments of the present invention are given in detail by the following examples and the accompanying drawings.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic three-dimensional structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic three-dimensional structure diagram of a pressing assembly in an embodiment of the present invention;

3 is a cross-sectional view of a press-fit assembly in an embodiment of the present invention;

4 is an exploded schematic diagram of a pressing assembly in an embodiment of the present invention;

FIG. 5 is a schematic diagram of a partial structure of the circumferential holding pressure correction in an embodiment of the present invention;

FIG. 6 is a schematic three-dimensional structure diagram of a push assembly in an embodiment of the present invention.

Description of reference numbers:

651. The first pressure-holding block;

652, the second pressure-holding block; 6521, the pressure-holding skirt;

653. Center pressure maintaining rod;

654, correction plate; 6541, pressure bearing groove; 6542, circumferential pressure bearing bump; 6543, correction through hole;

656, bearing plate;

6561, load guide column; 6562, counterweight block;

657. Limit block;

658, indenter support;

6581, pressure maintaining support frame; 65811, pressure maintaining through hole; 6582, positioning rod;

659. Pressure maintaining guide assembly;

68. Pushing assembly; 681, Lifting cylinder; 682, Push plate; 6821, Center pressure-bearing bump.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings, and the foregoing and other objects, features, aspects and advantages of the present invention will become more apparent, so that those skilled in the art can implement them with reference to the description. In the drawings, the shapes and dimensions may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to refer to the same or like parts. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the size from top to bottom, "width" corresponds to the size from left to right, and "depth" corresponds to the size from front to back. These relative terms are for convenience of description and are generally not intended to require a specific orientation. Terms referring to attachment, coupling, etc. (eg, "connected" and "attached") refer to the fixed or attached relationship, as well as the movable or rigid attachment or relationship of these structures to each other, directly or indirectly, through intervening structures, unless The other way is explicitly stated.

Next, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, on the premise of no conflict, the embodiments or technical features described below can be combined arbitrarily to form new implementations. example. It should be understood that terms such as "having", "comprising" and "including" as used herein do not assign the presence or addition of one or more other elements or combinations thereof.

As shown in Figures 3 and 4, the present invention provides a pressure maintaining correction mechanism, including a pressing mechanism, and the pressing mechanism includes:

Center pressure maintaining rod 653;

at least two circumferential pressure maintaining heads arranged around the outer circumference of the central pressure maintaining rod 653, and a circumferential pressure maintaining assembly formed by surrounding the circumferential pressure maintaining heads; and

A central counterweight and at least two circumferential counterweights;

Among them, the central counterweight is pressed down on the top of the central pressure maintaining rod 653 so that the central pressure maintaining rod 653 is pressed down on the central area of the workpiece; each circumferential counterweight is pressed down on the top of the corresponding circumferential pressure maintaining head so that the circumferential pressure maintaining head It is pressed down on the circumferential area of the workpiece; specifically, there are two sets of circumferential pressure maintaining heads, which are symmetrically arranged with respect to the central pressure maintaining rod 653 .

Compared with the existing pressure maintaining mechanism and the overall pressure head structure, in the present invention, the central pressure maintaining rod 653 and the circumferential pressure maintaining head are used to maintain pressure in different areas on the workpiece, and the pressure is maintained in blocks, which simplifies the single pressure maintaining. The shape of the pressure head is easy to process and form the pressure holding head. At the same time, since the pressure holding head is also subjected to the reaction force of the workpiece during the pressing process, the pressure holding head is easily worn for a long time. Especially, the upper part of the pressure holding head is thin. The long protruding part is prone to breakage. When the existing integrated pressure holding head is damaged, it needs to be completely replaced. In the present invention, only the damaged central pressure holding rod 653 or the circumferential pressure holding head needs to be replaced, which saves costs.

In a specific embodiment, the workpiece includes a base and an assembly part assembled on the base, the base is provided with an annular bump, the assembly part is assembled on the annular bump, and the assembly part includes: a part body, one side of which is connected to the base. Fitting; the other side is press-fitted with the indenter, and it is provided with an outer edge convex part, which is a continuous protrusion arranged at the edge position of the part body part; and a central concave part, which is set in the center of the part body Inwardly recessed notch at the location;

The circumferential pressure maintaining head includes a first pressure maintaining block 651 and a second pressure maintaining block 652. The outer edge contour formed by splicing the first pressure maintaining block 651 and the second pressure maintaining block 652 corresponds to the outer edge of the assembled part, and when the first pressure maintaining block After the block 651 and the second pressure maintaining block 652 are assembled, a hollow pressure rod cavity 655 is formed inside, and the central pressure maintaining rod 653 is arranged in the pressure rod cavity 655;

One end of the pressing surface of the second pressing block 652 is provided with a raised first pressing block and a second pressing block; the first pressing block and the second pressing block are pressed against different positions on the part body, so that the first pressing block , The relatively concave part between the second pressing blocks forms a space for space, so as to avoid the upper part of the part body;

One end of the pressing surface of the first pressure maintaining block 651 is provided with a convex pressure block, the convex pressure block is arranged along the outer edge of the first pressure maintaining block 651, and the position of the convex pressure block corresponds to the first pressure block and the second pressure block. yuan;

Protruding bumps are arranged on the circumferential pressure keeping head to make the circumferential region of the pressing part avoid the precision components arranged in the circumferential region and ensure the quality of pressure keeping.

At the same time, the central counterweight and the circumferential counterweight are correspondingly arranged on the central pressure maintaining rod 653 and the circumferential pressure maintaining head, so that the pressures on the central pressure maintaining rod 653 and the circumferential pressure maintaining head can be independently adjusted so as to facilitate the central pressure maintaining rod 653 and the circumferential pressure maintaining head. The counterweight 6562 configured on the circumferential pressure holding head meets the requirements for holding pressure in different areas of the workpiece.

The weight of the central counterweight is different from that of any circumferential counterweight to meet the pressure holding pressure requirements of different areas on the workpiece.

In a specific embodiment of weight distribution according to the above solution, the weight of the central weight is different from the weight of any one of the circumferential weights. The required holding pressures in the central area and the circumferential area are different;

Furthermore, the weights of any two circumferential counterweights are different, and the required holding pressures on the circumferential regions are different, so that the holding pressures can meet different requirements of different regions.

1 and 2 again, the pressure maintaining mechanism further includes a pressure maintaining support frame 6581, the top of the pressure maintaining support frame 6581 is provided with a pressure maintaining through hole 65811 penetrating its upper and lower surfaces, and the pressure maintaining support frame 6581 is provided with a Pushing assembly 68 directly below the pressure maintaining through hole 65811, the workpiece to be maintained is pushed to the top of the pressure maintaining support frame 6581 under the pushing of the pushing assembly 68, so that the area of the workpiece to be maintained is in the pressure maintaining through hole. exposed in 65811;

The pressure-maintaining support frame 6581 undertakes the components of the entire pressure-maintaining mechanism, and the push-up assembly 68 lifts the workpiece for pressure-maintaining. The pressure-maintaining mechanism can be erected on the transmission assembly line, which is convenient for assembly line operation and realizes automation.

Further, the pressure maintaining support frame 6581 is fixedly connected with a pressure maintaining guide assembly 659 erected above the pressure maintaining through hole 65811;

The direction of the central pressure maintaining rod 653 and the circumferential pressure maintaining head is limited by the pressure maintaining guide assembly 659;

The push-up assembly 68 pushes up the workpiece, so that the central pressure-holding rod 653 and the circumferential pressure-holding head slide upward in the direction defined by the pressure-holding guide assembly 659.

The pressure-maintaining guide assembly 659 and the pressure-maintaining support frame 6581 are arranged up and down in sequence to form the indenter support 658, and the indenter support 658 is used to hold the components in the pressure-maintaining mechanism. In the support frame 6581, the pressure head is arranged in the structural space where the pressure-maintaining guide assembly 659 is installed.

The pressure-maintaining guide assembly 659 includes two guide vertical plates, the two guide vertical plates are arranged in parallel and spaced apart to form a guide space between the two, the central counterweight block and the circumferential counterweight block are arranged in the guide space and are both connected to the guide space. The inner side of the guide vertical plate is slidably connected in the vertical direction.

The central counterweight block includes: a central counterweight support frame, which is supported by the central pressure maintaining rod 653 and slidably engaged with the inner side of the guide vertical plate; and at least one central counterweight weight, which is arranged on the central counterweight on the support frame;

The circumferential counterweight block includes: a circumferential counterweight support frame, which is supported by the circumferential pressure maintaining head and is slidably engaged with the inner side of the guide vertical plate; and at least one circumferential counterweight weight, which is arranged on the circumferential counterweight on the support frame.

The structure of the central counterweight support frame and the circumferential counterweight support frame are the same as the bearing plate 656 in the figure; the central counterweight weight and the circumferential counterweight weight are the counterweight block 6562 in the figure;

In a preferred embodiment, a load-bearing guide post 6561 is installed on the bearing plate 656, and a counterweight 6562 is sleeved on the load-bearing guide post 6561. placed on the bearing plate 656;

The pressure maintaining guide assembly 659 includes a guide portion and a guide rail portion. The guide portion of the pressure maintaining guide assembly 659 is connected to the pressure bearing plate 656. The guide rail portion is arranged on the pressure maintaining support frame 6581, and is slidably connected to the guide rail portion through the guide portion to limit the pressure bearing. The direction of movement of the plate 656 .

A central reset component is elastically connected between the center weight block and the top of the pressure maintaining support frame 6581 , and a circumferential reset component is elastically connected between the circumferential weight block and the top of the pressure maintaining support frame 6581 . The center reset component can be elastically deformed, and the center reset component acts on the center counterweight block, so that the downward pressure holding pressure of the center counterweight block in the vertical direction can be buffered, preventing the workpiece from being damaged due to a sudden increase in the holding pressure during the pressure holding process. damage.

Among them, the central reset component and the circumferential reset component include a buffer block. In a preferred embodiment, the buffer block is a spring; a limit block 657 is erected in the pressure-holding support frame 6581; the limit block 657 has a built-in buffer block; the buffer block It is used to accept the pressure-bearing plate 656, so that when the pressure-bearing plate 656 is pressed down, a buffer block is used for buffering to protect the components inside the self-weight pressure maintaining mechanism;

The limit block 657 is I-shaped, the limit block 657 includes a lower beam and an upper beam, the lower beam and the upper beam are connected by a support column to form a support structure of the limit block 657, and the limit block 657 is installed on the lower beam and the upper beam;

The central pressure maintaining rod 653 and the pressure bearing plate 656 on the circumferential pressure maintaining head are connected to the limit blocks 657 on the lower beam and the upper beam, which reduces the floor space of the limit blocks 657, thereby reducing the area of the mechanism and making the structure more compact.

The pressure bearing plate 656 on the circumferential pressure maintaining head and the pressure bearing plate 656 on the central pressure maintaining rod 653 are dislocated. Referring now to FIG. 4 , the pressure bearing plate 656 on the central pressure maintaining rod 653 is provided with a bearing that protrudes from the circumferential pressure maintaining head. Pressing plate 656, so that the pressure-bearing plate 656 on the central pressure-holding rod 653 is higher than the pressure-bearing plate 656 on the circumferential pressure-holding head. On the pressure-bearing plate 656 on the head, and there is no interference therebetween, the pressure-maintaining work can be carried out normally, and at the same time, the footprint of the structure is reduced, and the structure is more compact.

Referring to FIG. 5 , before the pressure-holding process is performed, the top of the pressure-holding support frame 6581 is provided with a correction plate 654 to replace the workpiece to detect whether there is a deviation in the position of the circumferential pressure-holding head, and to correct the circumferential pressure-holding head position according to the detection result, Therefore, the accurate implementation of the pressure-holding process is ensured. The pressure-holding skirt 6521 is pressed on the calibration plate 654, and the correction plate 654 is used to replace the height of the workpiece, and is used for the imprinting test before the pressure-holding work.

The calibration plate 654 is sheathed on the outer circumference of the circumferential pressure maintaining head through the calibration through hole 6543 so that the pressure maintaining skirt 6521 is projected on the upper surface of the calibration plate 654; the upper surface of the calibration plate 654 is provided with at least two pressures arranged around the calibration through hole 6543 Sensing part, and the pressure sensing part is located directly below the pressure-retaining skirt 6521; each circumferential counterweight presses down the top of a corresponding circumferential pressure-holding head so that the pressure-retaining skirt 6521 is pressed down on the pressure sensing part .

In this embodiment, the pressure-holding end of the circumferential pressure maintaining head is an arc-shaped bump, and the arc-shaped bump can be pressed at the circumferential position of the workpiece. The force-bearing area of the arc-shaped bump on the workpiece is small, so that the circumferential pressure maintaining head can The pressure on the workpiece is relatively large. When there is a certain deviation in the installation process of the circumferential pressure holding head, the stress area of the circumferential pressure holding head on the workpiece does not change much under normal conditions and the deviation, so that the pressure value per unit area does not change significantly. It is difficult for the detection equipment to detect the change of the pressure value, so that the operator cannot correct it correctly according to the detection equipment, resulting in a decrease in the accuracy, thereby affecting the production quality. When there is a certain deviation of the circumferential pressure holding head, the change degree of the force-bearing area is enlarged, so that the pressure value change is more obvious, and it is convenient for the operator to observe the pressure value change intuitively, so as to correct the circumferential pressure holding head position.

The pressure-retaining skirt 6521 is provided with a pressure-bearing groove 6541 on the upper surface of the calibration through hole 6543; the pressure-retaining skirt 6521 is spliced to form a platform, and the pressure-bearing groove 6541 is consistent with the shape of the platform; the pressure sensing component is arranged in the pressure-bearing groove 6541 On the bottom surface, the pressure-holding skirt 6521 extends into the pressure-bearing groove 6541, and the position of the circumferential pressure-holding head in the horizontal direction is restricted by the pressure-holding skirt 6521.

The bottom surface of the pressure-bearing groove 6541 extends upward to form a circumferential pressure-bearing bump 6542 corresponding to the position of the pressure-sensing component; the pressure-sensing component is installed on the top surface of the circumferential pressure-bearing bump 6542, and the pressure-holding skirt 6521 is pressed on the circumferential pressure-bearing bump 6542 superior.

By pressing the circumferential pressure holding head on the calibration plate 654, it is verified whether the pressure of the pressure head is uniform, and the pressure test paper cannot be directly connected to the product. The purpose of the calibration plate 654 is to construct an equivalent replacement surface to test whether the imprint meets the requirements of the workpiece pressing, so as to ensure the accuracy of the workpiece pressing.

The upper surface of the calibration plate 654 is provided with a pressure bearing groove 6541 arranged around the calibration through hole 6543, and the pressure sensing component is arranged in the pressure bearing groove 6541; when the pressure maintaining skirt 6521 is pressed down on the pressure sensing component, the pressure maintaining The skirt 6521 is at least partially received in the pressure receiving groove 6541 .

The circumferential arrangement of the circumferential pressure maintaining head makes the shape and lateral dimension of the pressure bearing groove 6541 match the edge of the pressure maintaining skirt 6521. When the pressure maintaining skirt 6521 is pressed down on the pressure sensing component, the pressure maintaining skirt The edge of 6521 is defined by the side wall of the pressure-retaining groove 6541, and the pressure-retaining groove 6541 is used to limit the horizontal position of the surrounding pressure-retaining skirt 6521.

A positioning rod 6582 is installed on the side of the top of the pressure maintaining support frame 6581 close to the push assembly 68, the base is placed in the tray, and the tray is provided with a positioning hole corresponding to the positioning rod 6582, through the push assembly 68 lift the tray to the positioning rod 6582 and connect it with the positioning hole, so as to position the base in the tray, so that the pressing head can be accurately pressed on the area required to be pressed.

Referring now to FIG. 6 , the pusher assembly 68 includes a pusher plate 682 and a lift cylinder 681 for driving the pusher plate 682 . The pusher plate 682 is pushed by the lift cylinder 681 so that the pusher plate 682 receives the base, so that the pusher plate 682 is accurately connected. The base, the push plate 682 is provided with a push-up block, and the bottom of the base is provided with a limit slot 6542, and the push-up block extends into the limit slot 6542 to limit the position of the base.

A central pressure sensing component is installed on the upper surface of the push plate 682, and the push plate 682 is driven by the lifting cylinder 681 to be lifted to contact with the central pressure maintaining rod 653. Specifically, the central pressure maintaining rod 653 is pressed on the central pressure sensing component; The upper surface of the plate 682 is provided with a central pressure-bearing bump 6821 for receiving the central pressure sensing component, and the lift driver drives the push plate 682 to lift up, so that the central pressure-holding rod 653 is pressed on the central pressure-bearing bump 6821;

The position of the circumferential pressure-holding head is detected by the correction plate 654, while the position of the central pressure-holding rod 653 is detected by the pusher assembly 68, thereby comprehensively correcting the position of the pressure-holding head. The specific detection method includes:

1) The pressure-holding skirt 6541 is pressed down on the pressure-sensing part correspondingly arranged on the calibration plate 654, and the position of the circumferential pressure-holding head is adjusted according to the detection result obtained on the pressure-sensing part;

2) While implementing 1), the lift driver pushes the push plate 682 provided with the pressure detection element, so that the central pressure sensing member on the push plate 682 pushes the central pressure maintaining rod 653 to lift, and the pressure obtained on the central pressure sensing member The detection result adjusts the position of the center pressure maintaining rod 653 .

Although the embodiment of the present invention has been disclosed as above, it is not limited to the application listed in the description and the embodiment, and it can be applied to various fields suitable for the present invention. For those skilled in the art, it can be easily Therefore, the invention is not limited to the specific details without departing from the general concept defined by the appended claims and the scope of equivalents.

Claims

A pressure maintaining correction mechanism, characterized in that it includes:

a calibration plate (654), which is provided with calibration through holes (6543) penetrating its upper and lower surfaces;

a circumferential pressure-maintaining assembly formed by at least two circumferential pressure-maintaining heads arranged around them, and an outwardly extending pressure-maintaining skirt (6521) is fixedly connected to the outer side of each of the circumferential pressure-maintaining heads; and

At least two circumferential weights;

Wherein, the calibration plate (654) is sleeved on the outer periphery of the circumferential pressure maintaining component through the calibration through hole (6543), so that the pressure maintaining skirt (6521) is projected on the upper surface of the calibration plate (654) ; The upper surface of the calibration plate (654) is provided with at least two pressure sensing parts arranged around the calibration through hole (6543), and the pressure sensing parts are located on the side of the pressure maintaining skirt (6521) Right below; each piece of the circumferential counterweight presses down the top end of a corresponding piece of the circumferential pressure-maintaining head so that the pressure-maintaining skirt (6521) is pressed down on the pressure sensing component.
The pressure-maintaining correction mechanism according to claim 1, characterized in that, a pressure-bearing groove (6541) arranged around the correction through hole (6543) is formed on the upper surface of the correction plate (654), and the pressure sensing The component is arranged in the pressure-retaining groove (6541); when the pressure-holding skirt (6521) is pressed down on the pressure sensing component, the pressure-holding skirt (6521) is at least partially received in the in the pressure-bearing groove (6541).
The pressure-holding correction mechanism according to claim 2, characterized in that the circumferential arrangement of the circumferential pressure-holding head makes the shape and lateral dimension of the pressure-holding groove (6541) match the pressure-holding skirt (6521) The edge of the pressure-retaining skirt (6521) is adapted to the edge, and when the pressure-retaining skirt (6521) is pressed down on the pressure sensing component, the edge of the pressure-retaining skirt (6521) is surrounded by the side of the pressure-receiving groove (6541). limited by the wall.
The pressure-maintaining correction mechanism according to claim 3, characterized in that, the bottom surface of the pressure-bearing groove (6541) extends upward to form a circumferential pressure-bearing bump (6542) corresponding to the position of the pressure sensing component;

The pressure sensing component is mounted on the top surface of the circumferential pressure-bearing bump (6542), and the pressure-maintaining skirt (6521) is pressed on the circumferential pressure-bearing bump (6542).
The pressure maintaining correction mechanism according to any one of claims 1-4, characterized in that it further comprises a central pressure maintaining rod (653), and the circumferential pressure maintaining head is arranged around the outer circumference of the central pressure maintaining rod (653). ;

The top end of the central pressure maintaining rod (653) is provided with a central counterweight block, and the central counterweight block is pressed down on the central pressure maintaining rod (653) so that the central pressure maintaining rod (653) is pressed down in the center on the pressure sensing part.
The pressure-maintaining correction mechanism according to claim 5, further comprising a pressure-maintaining support frame (6581), and the correction plate (654) is disposed on the upper surface of the pressure-maintaining support frame (6581);

The top of the pressure maintaining support frame (6581) is provided with a pressure maintaining through hole (65811) penetrating the upper and lower surfaces of the pressure maintaining support frame (6581), and a positive pressure maintaining through hole (65811) is provided in the pressure maintaining support frame (6581). In the lower push-up assembly (68), the central pressure-holding rod (653) is pressed down on the top of the push-up assembly (68).
The pressure maintaining correction mechanism according to claim 6, characterized in that, the pusher assembly (68) comprises a pusher plate (682) and a lift driver drivingly connected with the pusher plate (682);

The upper surface of the push plate (682) is provided with a center pressure-bearing bump (6821) for receiving the central pressure sensing component, and the lift driver drives the push plate (682) to lift, so that the center pressure-holding block (682) is lifted. The rod (653) is pressed on the central pressure-bearing bump (6821).
The pressure-maintaining correction mechanism according to claim 5, wherein when each piece of the circumferential weight is pressed down on the top of a corresponding piece of the circumferential pressure-maintaining head and the center weight is pressed down on the When the center pressure maintaining rod (653) is at the top end, the bottom of the central pressure maintaining rod (653) protrudes downward from the bottom of the circumferential pressure maintaining head.
The pressure maintaining correction mechanism according to claim 4, characterized in that, the circumferential pressure maintaining heads are provided with two groups, and are symmetrically arranged with respect to the central pressure maintaining rod (653).
A calibration method for the pressure-holding calibration mechanism according to any one of claims 1-9, characterized in that, comprising:

1) The pressure-holding skirt (6521) is pressed down on the pressure-sensing part correspondingly arranged on the calibration plate (654), and the position of the circumferential pressure-holding head is adjusted according to the detection result obtained on the pressure-sensing part;

2) While implementing 1), the lift driver pushes the push plate (682) provided with the pressure detection element, so that the central pressure sensing component on the push plate (682) pushes the central pressure maintaining rod (653) to lift, and the central pressure The detection result obtained on the sensing part adjusts the position of the center pressure-holding rod (653).