Self-centering mechanism for large-size runner plate

Abstract

The invention relates to the technical field of runner plate machining devices, and particularly discloses a self-centering mechanism for a large-size runner plate. The first positioning assemblies are arranged on the main body, located in the cavity of the runner plate and capable of synchronously moving in the width direction of the runner plate until abutting against the runner plate, so that the runner plate is centered in the width direction of the runner plate; the second positioning assemblies are arranged on the main body, located in the cavity of the runner plate and capable of synchronously moving in the length direction of the runner plate until abutting against the runner plate, so that the runner plate is centered in the length direction of the runner plate; the elastic component is used for elastically supporting the first positioning assembly and the second positioning assembly; according to the mechanism, the centering work of the runner plate can be automatically completed, manual debugging is not needed, the manual labor amount is reduced, and the production and machining efficiency of the runner plate is improved.

Description

Technical Field

[0001] The invention relates to the technical field of flow channel plate processing devices, and in particular to a self-centering mechanism for large-size flow channel plates. Background Art

[0002] Vanadium liquid battery is a new type of electrochemical energy storage system. Compared with traditional batteries, it has the advantages of higher safety, longer cycle life, lower maintenance cost and environmental friendliness. Among them, the flow plate is one of the important components inside the vanadium liquid battery. The existing flow plate is often formed by injection molding. After injection molding, the surface of the flow plate needs to be machined to finally complete the production of the flow plate.

[0003] In order to ensure the accuracy of subsequent machining, the runner plate needs to be centered on the workbench first. In the existing runner plate centering process, it is necessary to first install a positioning block on the workbench and complete the centering of the runner plate by positioning the corner points of the runner plate with the positioning block.

[0004] Reference Figure 1 As shown, however, a cavity for the flow of battery fluid is usually provided on the flow channel plate, and the flow channel plate is not solid, which often leads to a tendency for the flow channel plate to shrink toward the geometric center after molding. The geometric dimensions of the flow channel plate are not stable and will fluctuate within a certain tolerance range; therefore, it is not reliable to complete the centering by using the positioning block and the outer contour of the flow channel plate; and during the centering process, the staff is also required to debug the positioning block along the length and width directions of the guide plate respectively, and the staff cannot ensure that the adjustment amounts of the positioning blocks on both sides of the guide plate remain consistent. Such a centering and debugging process is cumbersome and has high technical requirements for the staff. Summary of the invention

[0005] In view of the above problems in the prior art, the present invention provides a self-centering mechanism for a large-sized flow channel plate, the purpose of which is to improve the centering efficiency of the flow channel plate.

[0006] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows:

[0007] Provided is a self-centering mechanism for a large-size flow channel plate, comprising: a main body; a plurality of groups of first positioning components, which are arranged on the main body and are located in the cavity of the flow channel plate and can move synchronously along the width direction of the flow channel plate until they abut against the flow channel plate, thereby dividing the flow channel plate in the width direction of the flow channel plate; a plurality of groups of second positioning components, which are arranged on the main body and are located in the cavity of the flow channel plate and can move synchronously along the length direction of the flow channel plate until they abut against the flow channel plate, thereby dividing the flow channel plate in the length direction of the flow channel plate; and an elastic component, which is used to elastically support the first positioning components and the second positioning components.

[0008] Further, the first positioning component includes: a plurality of first positioning components, which are arranged on the main body along the length direction of the flow channel plate; wherein the first positioning component includes at least: two first abutment rods symmetrically arranged along the width direction of the flow channel plate, rotatably arranged on the main body, and capable of rotational movement to approach / move away from the length side of the flow channel plate cavity; the second positioning component includes: a plurality of second positioning components, which are symmetrically arranged on the main body along the length direction of the flow channel plate, slidably installed on the main body, and capable of linear sliding movement to approach / move away from the width side of the flow channel plate cavity; wherein the elastic component is used to support the first abutment rod and the second positioning component, and provide the first abutment rod and the second positioning component with a tendency to move toward the length side and width side of the flow channel plate cavity respectively.

[0009] Furthermore, the first positioning component also includes: a first base, which is arranged on the main body and is located on one side of the driving component along the length direction of the flow channel plate; wherein one end of the elastic component abuts against the first base, and the other end abuts against the driving component.

[0010] Furthermore, the mechanism also includes: a second slide groove, which is opened on the second positioning component along the length direction of the flow channel plate; a plurality of guide pins, which are arranged on the main body along the length direction of the flow channel plate, and the second slide groove can be slidably mounted on the guide pins; a second base, which is arranged on the main body and is located on one side of the second positioning component along the length direction of the flow channel plate; wherein one end of the elastic component abuts against the second base, and the other end abuts against the second positioning component.

[0011] Furthermore, the mechanism also includes: a plurality of wedge blocks, which are arranged on the first abutment rod and the second positioning component along the contour of the cavity of the flow channel plate.

[0012] Furthermore, the first positioning assembly comprises: a plurality of first sliding components, which are slidably arranged on the main body along the width direction of the flow channel plate; the second positioning assembly comprises: a plurality of second sliding components, which are slidably arranged on the main body along the length direction of the flow channel plate; a transmission assembly, which transmission connects the first sliding components and the second sliding components; a power assembly, which is used to drive the plurality of second sliding components to slide synchronously, and drive the plurality of first sliding components to slide synchronously; wherein the elastic component (5) is used to support the first sliding component and the second sliding component, and provide the first sliding component and the second sliding component with a tendency to move toward the length side and the width side of the cavity away from the flow channel plate (1), respectively.

[0013] Furthermore, the power assembly includes: a telescopic component, a piston rod of the telescopic component is arranged along the width direction of the flow channel plate; a power block, arranged on the piston rod of the telescopic component; two first extrusion slopes, inclined at a fixed angle in the width direction of the flow channel plate, symmetrically arranged on the power block along the length direction of the flow channel plate, and two second sliding components respectively slidingly contact the two first extrusion slopes.

[0014] Further, the transmission assembly includes: a transmission slider, which is slidably arranged on the main body along the length direction of the flow channel plate; an adjustment spring, one end of which abuts against the transmission slider and the other end of which abuts against the second sliding component, for providing the transmission slider with a tendency to move toward the second sliding component; a second extrusion slope, which is inclined at a fixed angle to the length direction of the flow channel plate and is arranged on the first sliding component; and the transmission slider can slidably abut against the second extrusion slope;

[0015] Furthermore, the mechanism also includes: a negative pressure groove, which is opened on the main body and can be covered by the flow channel plate; and a negative pressure source, which provides negative pressure to the negative pressure groove and can adsorb the flow channel plate.

[0016] The beneficial effects of the present invention are as follows: in the present invention, the first positioning assembly and the second positioning assembly can move synchronously along the width direction and the length direction of the flow channel plate respectively. Even if the geometric dimensions of the flow channel plate fluctuate within the tolerance, the mechanism can automatically complete the centering of the flow channel plate without manual debugging, thereby reducing manual labor and improving the production and processing efficiency of the flow channel plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of the flow channel plate;

[0018] Figure 2 An overall top view of the centering mechanism provided in Example 1;

[0019] Figure 3 A top view of the installation of the first positioning component provided in Example 1;

[0020] Figure 4 A top view of the installation of the second positioning component provided in Example 1;

[0021] Figure 5 An overall top view of the centering mechanism provided in Example 2;

[0022] Figure 6 for Figure 5 A magnified schematic diagram of point A;

[0023] Figure 7 A top view of the installation of the second sliding component provided in Example 2;

[0024] Figure 8 for Figure 5 An enlarged schematic diagram of point B;

[0025] Fig. 9 An internal installation cross-sectional view of the first sliding component provided in Example 2;

[0026] Among them, 1. flow channel plate; 2. main body; 21. negative pressure groove; 3. first positioning component; 31. first abutment rod; 32. first rotating shaft; 33. second rotating shaft; 34. driving component; 35. first slide groove; 36. first base; 4. second positioning component; 41. second slide groove; 42. guide pin; 43. second base; 5. elastic component; 6. wedge block; 71. first sliding component; 72. second sliding component; 81. telescopic component; 82. power block; 83. first extrusion slope; 91. transmission slider; 92. adjustment spring; 93. second extrusion slope; 100. mounting screw; 101. roller; 102. first mounting seat; 103. second mounting seat; 104. third mounting seat; 105. slide rod; 106. guide shaft. DETAILED DESCRIPTION

[0027] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] Example 1

[0029] The embodiment of the present invention provides a self-centering mechanism for a large-sized flow channel plate, comprising: a main body 2; a plurality of groups of first positioning components, which are arranged on the main body 2 and are located in the cavity of the flow channel plate 1, and can move synchronously along the width direction of the flow channel plate 1 until they abut against the flow channel plate 1, so as to divide the flow channel plate 1 along the width direction of the flow channel plate 1; a plurality of groups of second positioning components, which are arranged on the main body 2 and are located in the cavity of the flow channel plate 1, and can move synchronously along the length direction of the flow channel plate 1 until they abut against the flow channel plate 1, so as to divide the flow channel plate 1 along the length direction of the flow channel plate 1; and an elastic component 5, which is used to elastically support the first positioning component and the second positioning component.

[0030] Reference Figure 2 As shown, in this embodiment, the first positioning component includes: a plurality of first positioning components 3, which are arranged on the main body 2 along the length direction of the flow channel plate 1; wherein the first positioning component 3 includes at least: two first abutment rods 31 symmetrically arranged along the width direction of the flow channel plate 1, rotatably arranged on the main body 2, and capable of rotational movement to approach / move away from the length side of the cavity of the flow channel plate 1; the second positioning component includes: a plurality of second positioning components 4, which are symmetrically arranged on the main body 2 along the length direction of the flow channel plate 1, slidably installed on the main body 2, and capable of linear sliding movement to approach / move away from the width side of the cavity of the flow channel plate 1; wherein the elastic component 5 is used to support the first abutment rod 31 and the second positioning component 4, and provide the first abutment rod 31 and the second positioning component 4 with a tendency to move toward the length side and width side of the cavity of the flow channel plate 1, respectively.

[0031] During specific use, the elastic components 5 are initially in a compressed state. In the same centering direction, springs of the same specification are selected for the elastic components 5. By compressing the elastic components 5 to the same stroke, several groups of positioning components in the same centering direction can be synchronously moved the same distance, and then the elastic components 5 are released. The elastic components 5 in different centering directions provide the first abutment rod 31 and the second positioning component 4 with a tendency to move toward the length and width sides of the cavity close to the flow channel plate 1, respectively. The first abutment rod 31 and the second positioning component 4 respectively abut the length and width sides of the cavity of the flow channel plate 1, and can automatically overlap the geometric center of the main body 2 with the geometric center of the flow channel plate 1, thereby completing the automatic centering of the flow channel plate 1, simplifying the centering process of the flow channel plate 1, and eliminating the need for staff debugging, thereby improving the centering efficiency.

[0032] Reference Figure 3 As shown, the first positioning component 3 also includes: a first rotating shaft 32, which is arranged on the main body 2, and the middle part of the first abutting rod 31 is hingedly mounted on the second rotating shaft 32; the second rotating shaft 33 is arranged at the end of the first abutting rod 31 away from the flow channel plate 1. In this embodiment, the end of the first abutting rod 31 away from the second rotating shaft 33 is used to abut the flow channel plate 1; a driving component 34, which is slidably arranged on the main body 2 and can slide along the length direction of the flow channel plate 1; a first sliding groove 35, which is opened on the driving component 34 along the width direction of the flow channel plate 1, and the second rotating shaft 33 is slidably arranged in the first sliding groove 35; wherein, two first sliding grooves 35 are symmetrically arranged on one driving component 34 along the width direction of the flow channel plate 1. The first positioning component 3 also includes: a first base 36, which is arranged on the main body 2 and is located on one side of the driving component 34 along the length direction of the flow channel plate 1; wherein one end of the elastic component 5 abuts the first base 36, and the other end abuts the driving component 34.

[0033] It is worth mentioning that a slide rail is installed on the main body 2, and the driving component 34 is slidably mounted on the slide rail. The elastic component 5 can be squeezed by the staff pushing the driving component 34 to slide in the direction close to the first base 36.

[0034] In this embodiment, two first slide grooves 35 are symmetrically arranged on a driving component 34 along the width direction of the flow channel plate 1, and two first abutment rods 31 are also symmetrically arranged along the width direction of the flow channel plate 1. A driving component 34 moves along the length direction of the flow channel plate 1, and can drive the two first abutment rods 31 to rotate around the first rotating shaft 32, so as to drive the ends of the two first abutment rods 31 to move the same distance in the width direction of the flow channel plate 1, thereby ensuring the centering accuracy of the flow channel plate 1 in the width direction.

[0035] Reference Figure 4As shown, the mechanism also includes: a second slide groove 41, which is opened on the second positioning component 4 along the length direction of the flow channel plate 1; a plurality of guide pins 42, which are arranged on the main body 2 along the length direction of the flow channel plate 1, and the second slide groove 41 can be slidably sleeved on the guide pins 42; a second base 43, which is arranged on the main body 2 and is located on one side of the second positioning component 4 along the length direction of the flow channel plate 1; wherein one end of the elastic component 5 abuts against the second base 43, and the other end abuts against the second positioning component 4.

[0036] In this embodiment, two second positioning components 4 are provided. Of course, the elastic components 5 correspondingly provided on the two second positioning components 4 have the same specifications. The two elastic components 5 are respectively compressed by the two second positioning components 4 by the same distance, thereby driving the ends of the two second positioning components 4 to move the same distance in the length direction of the flow channel plate 1, thereby ensuring the centering accuracy of the flow channel plate 1 in the length direction.

[0037] Specifically, the mechanism further includes: a plurality of wedge blocks 6, which are arranged on the first abutment rod 31 and the second positioning component 4 along the contour of the cavity of the flow channel plate 1; specifically, the wedge blocks 6 are conical and are used for the flow channel plate 1 to fall and position.

[0038] Specifically, two first positioning components 3 and two second positioning components 4 are provided on the main body 2. In the cavity of the flow channel plate 1, six wedge blocks 6 are provided on the first abutment rod 31 and the second positioning component 4 in central symmetry with the geometric center of the main body 2. When the flow channel plate 1 and the six wedge blocks 6 are in contact, they shrink. The synchronous contraction of the six wedge blocks 6 ensures that the geometric center of the flow channel plate 1 will accurately fall on the geometric center of the main body 2, thereby ensuring the positioning accuracy of the flow channel plate 1 and facilitating subsequent workpiece processing.

[0039] Example 2

[0040] Reference Figure 5 As shown, in this embodiment, the first positioning component includes: a plurality of first sliding components 71, which are slidably arranged on the main body 2 along the width direction of the flow channel plate 1; the second positioning component includes: a plurality of second sliding components 72, which are slidably arranged on the main body 2 along the length direction of the flow channel plate 1; a transmission component, which transmits and connects the first sliding component 71 and the second sliding component 72; a power component, which is used to drive the plurality of second sliding components 72 to slide synchronously, and drive the plurality of first sliding components 71 to slide synchronously; wherein the elastic component 5 is used to support the first sliding component 71 and the second sliding component 72, and provide the first sliding component 71 and the second sliding component 72 with a tendency to move toward the length side and the width side of the cavity away from the flow channel plate 1, respectively.

[0041] In this embodiment, the power component provides power to drive several second sliding components 72 to slide synchronously along the length direction, and can also drive several first sliding components 71 to slide synchronously along the width direction, thereby automatically completing the centering operation of the flow channel plate 1 in the length direction and the width direction; making the entire centering operation more stable and reliable, and being able to further improve the stability of the centering operation of the flow channel plate 1.

[0042] In addition, the power component drives the first sliding component 71 and the second driving component 34 to slide, and can also squeeze the elastic component 5 to a compressed state respectively. When the flow channel plate 1 needs to be removed, the power component fails, and the elastic component 5 can automatically drive the first sliding component 71 and the second sliding component 72 to move toward the length and width edges away from the cavity of the flow channel plate 1 to reset, thereby completing the unloading.

[0043] Specifically, the power assembly includes: a telescopic component 81, the telescopic direction of the piston rod of the telescopic component 81 is set along the width direction of the flow channel plate 1; a power block 82, fixedly installed on the piston rod of the telescopic component 81; two first extrusion slopes 83, inclined at a fixed angle in the width direction of the flow channel plate 1, and symmetrically arranged on the power block 82 along the length direction of the flow channel plate 1, and two second sliding components 72 are respectively in sliding contact with the two first extrusion slopes 83.

[0044] In this embodiment, the telescopic component 81 is a cylinder. By injecting high-pressure gas into the cylinder, the piston rod can be driven to move, driving the power block 82 to move along the width direction of the flow channel plate 1, and the first extrusion slope 83 is used to extrude the second sliding component 72, thereby driving the two second sliding components 72 to slide synchronously along the length direction of the flow channel plate 1.

[0045] Reference Figure 7 and Figure 8 As shown, the transmission assembly includes: a transmission slider 91, which is slidably arranged on the main body 2 along the length direction of the flow channel plate 1; an adjustment spring 92, one end of which abuts the transmission slider 91, and the other end abuts the second sliding component 72, which is used to provide the transmission slider 91 with a tendency to move toward the second sliding component 72; a second extrusion slope 93, which is inclined at a fixed angle in the length direction of the flow channel plate 1 and is arranged on the first sliding component 71; and the transmission slider 91 can slidably abut the second extrusion slope 93.

[0046] In actual work, in the process of the power component driving the second sliding component 72 to move, the adjusting spring 92 can be squeezed to push the transmission slider 91, and the transmission slider 91 can be pushed to move; in the process of the transmission slider 91 moving, the second squeezing slope 93 is squeezed, and the first sliding components 71 on both sides of the transmission slider 91 are synchronously pushed in the width direction until the first sliding component 71 abuts against the flow channel plate 1, and the flow channel plate 1 is centered in the width direction; the second sliding component 72 continues to move, and continues to squeeze the adjusting spring 92, and gradually increases the thrust applied by the transmission slider 91 to the first sliding component 71, to ensure the stability of the first sliding component 71 supporting the flow channel plate 1, until the second sliding component 72 abuts against the flow channel plate 1, and the flow channel plate 1 is centered in the length direction.

[0047] Specifically, in this embodiment, a mounting screw 100 is provided, and the threaded end of the mounting screw 100 passes through the transmission slider 91 and is threadedly connected to the second sliding component 72. The adjusting spring 92 is sleeved on the mounting screw 100, and one end of the adjusting spring 92 abuts against the nut of the mounting screw 100, and the other end of the adjusting spring 92 abuts against the transmission slider 91.

[0048] Preferably, a roller 101 may be additionally provided on the transmission slider 91 for rolling contact with the second extrusion slope 93 .

[0049] In this embodiment, the mechanism also includes: a negative pressure groove 21, which is opened on the main body 2 and can be covered by the flow channel plate 1; a negative pressure source, which provides negative pressure to the negative pressure groove 21 and can adsorb the flow channel plate 1; the negative pressure source can be a vacuum pump, which can draw a vacuum into the negative pressure groove 21 to adsorb and fix the flow channel plate 1 that has completed the centering work on the main body 2, so as to facilitate subsequent machining operations on the flow channel plate 1.

[0050] Reference Fig. 9 As shown, a first mounting seat 102 is provided on the main body 2, and a guide shaft 106 is provided on the first mounting seat 102. One end of the guide shaft 106 is provided on the first mounting seat 102, and the other end of the guide shaft 106 is slidably located in the first sliding component 71. At least two guide shafts 106 are sleeved on one first sliding component 71, and the two guide shafts 106 are provided along the width direction of the flow channel plate 1 to guide the first sliding component 71 to slide along the width direction of the flow channel plate 1; wherein, the elastic component 5 is embedded and installed in the first mounting seat 102, with one end abutting against the second sliding component 72, and the other end abutting against the first mounting seat 102.

[0051] Reference Figure 6 and Figure 7As shown, a second mounting seat 103 is also provided on the main body 2, and a sliding rod 105 is slidably provided in the second mounting seat 103, one end of the sliding rod 105 passes through the transmission slider 91 and is connected to the second sliding component 72, and the other end of the sliding rod 105 is connected to a third mounting seat 104, and the third mounting seat 104 slides in contact with the first extrusion slope 83; wherein, the elastic component 5 is sleeved on the sliding rod 105, one end of the elastic component 5 abuts against the second mounting seat 103, and the other end of the elastic component 5 abuts against the third mounting seat 104.

[0052] Preferably, a roller 101 may also be additionally provided on the third mounting seat 104 for rolling contact with the first extrusion inclined surface 83 .

[0053] In the specific sub-operation, the flow channel plate 1 is first placed on the main body 2. Of course, the first positioning assembly and the second positioning assembly are both in the cavity of the flow channel plate 1. Then, high-pressure gas is injected into the cylinder to drive the piston rod of the cylinder to move along the width direction of the flow channel plate 1, drive the power block 82 to move along the width direction of the flow channel plate 1, and use the first extrusion slope 83 to squeeze the third mounting seat 104, push the third mounting seat 104, the slide rod 105 and the second sliding component 72 to move, and squeeze the elastic component 5. During the movement of the second sliding component 72, it will also drive the mounting screw 100 to squeeze The adjusting spring 92 is pressed, and the transmission slider 91 is pulled to squeeze the second squeezing slope 93; the first sliding component 71 can be pushed to slide along the width direction of the flow channel plate 1, and squeeze the elastic component 5 until the first sliding component 71 abuts against the flow channel plate 1; the second sliding component 72 continues to move, and continues to squeeze the adjusting spring 92, to ensure that the first sliding component stably abuts against the flow channel plate 1, until the second sliding component abuts against the flow channel plate 1, completing the centering operation; when unloading is required, the cylinder fails, the piston rod of the cylinder is reset, the elastic component 5 recovers its deformation, and the first sliding component 71 and the second sliding component 72 are reset.

[0054] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, additional changes and modifications may be made to these embodiments once those skilled in the art are aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and the equivalent technology, the present invention is also intended to include these modifications and variations.

Claims

1. A self-centering mechanism for a large-size flow channel plate, characterized in that: include: Subject (2); A plurality of first positioning components are arranged on the main body (2) and are located in the cavity of the flow channel plate (1). The first positioning components are capable of synchronously moving along the width direction of the flow channel plate (1) until they abut against the flow channel plate (1), thereby centering the flow channel plate (1) along the width direction of the flow channel plate (1); A plurality of sets of second positioning components are arranged on the main body (2) and are located in the cavity of the flow channel plate (1). The second positioning components are capable of synchronously moving along the length direction of the flow channel plate (1) until they abut against the flow channel plate (1), thereby centering the flow channel plate (1) along the length direction of the flow channel plate (1); The elastic component (5) is used for elastically supporting the first positioning component and the second positioning component.

2. The self-centering mechanism for a large-size flow channel plate according to claim 1, characterized in that: The first positioning component includes: A plurality of first positioning components (3) are arranged on the main body (2) along the length direction of the flow channel plate (1); The first positioning component (3) comprises at least: two first abutment rods (31) symmetrically arranged along the width direction of the flow channel plate (1), rotatably arranged on the main body (2), and capable of rotating to approach or move away from the length side of the cavity of the flow channel plate (1); The second positioning component includes: A plurality of second positioning components (4) are symmetrically arranged on the main body (2) along the length direction of the flow channel plate (1), and are slidably mounted on the main body (2) and are capable of linear sliding motion to move closer to or further away from the width edge of the cavity of the flow channel plate (1); The elastic component (5) is used to support the first abutment rod (31) and the second positioning component (4), and provides the first abutment rod (31) and the second positioning component (4) with a tendency to move toward the length side and the width side of the cavity close to the flow channel plate (1), respectively.

3. The self-centering mechanism for a large-size flow channel plate according to claim 2, characterized in that: The first positioning component (3) also includes: A first rotating shaft (32) is arranged on the main body (2), and the first abutting rod (31) is hingedly mounted on the rotating shaft; A second rotating shaft (33) is arranged at an end of the first abutting rod (31) away from the flow channel plate (1); A driving component (34) is slidably disposed on the main body (2) and is capable of sliding along the length direction of the flow channel plate (1); A first slide groove (35) is provided on the driving component (34) along the width direction of the flow channel plate (1), and the second rotating shaft (33) is slidably disposed in the first slide groove (35); Wherein, two first sliding grooves (35) are symmetrically arranged on a driving component (34) along the width direction of the flow channel plate (1).

4. The self-centering mechanism for a large-size flow channel plate according to claim 3, characterized in that: The first positioning component (3) further comprises: a first base (36) which is arranged on the main body (2) and is located on one side of the driving component (34) along the length direction of the flow channel plate (1); wherein one end of the elastic component (5) abuts against the first base (36) and the other end abuts against the driving component (34).

5. The self-centering mechanism for a large-size flow channel plate according to claim 2, characterized in that: Also includes: A second slide groove (41) is provided on the second positioning component (4) along the length direction of the flow channel plate (1); A plurality of guide pins (42) are arranged on the main body (2) along the length direction of the flow channel plate (1), and the second slide groove (41) is slidably sleeved on the guide pins (42); A second base (43) is arranged on the main body (2) and is located on one side of the second positioning component (4) along the length direction of the flow channel plate (1); One end of the elastic component (5) contacts the second base (43), and the other end contacts the second positioning component (4).

6. The self-centering mechanism for a large-size flow channel plate according to claim 2, characterized in that: Also includes: A plurality of wedge blocks (6) are arranged on the first abutment rod (31) and the second positioning component (4) along the contour of the cavity of the flow channel plate (1).

7. The self-centering mechanism for a large-size flow channel plate according to claim 1, characterized in that: The first positioning assembly comprises: a plurality of first sliding components (71) slidably arranged on the main body (2) along the width direction of the flow channel plate (1); The second positioning assembly comprises: a plurality of second sliding components (72) slidably arranged on the main body (2) along the length direction of the flow channel plate (1); A transmission assembly, which transmission-connects the first sliding component (71) and the second sliding component (72); A power assembly, used for driving a plurality of second sliding components (72) to slide synchronously, and driving a plurality of first sliding components (71) to slide synchronously; The elastic component (5) is used to support the first sliding component (71) and the second sliding component (72), and provides the first sliding component (71) and the second sliding component (72) with a tendency to move away from the length side and the width side of the cavity of the flow channel plate (1).

8. The self-centering mechanism for a large-size flow channel plate according to claim 7, characterized in that: The power components include: A telescopic component (81), wherein a piston rod of the telescopic component (81) is arranged along the width direction of the flow channel plate (1); A power block (82) is arranged on the piston rod of the telescopic component (81); The two first extrusion inclined surfaces (83) are inclined at a fixed angle in the width direction of the flow channel plate (1) and are symmetrically arranged on the power block (82) along the length direction of the flow channel plate (1). The two second sliding components (72) are respectively in sliding contact with the two first extrusion inclined surfaces (83).

9. The self-centering mechanism for a large-size flow channel plate according to claim 7, characterized in that: The transmission components include: A transmission slider (91) is slidably arranged on the main body (2) along the length direction of the flow channel plate (1); An adjusting spring (92), one end of which abuts against the transmission slider (91) and the other end of which abuts against the second sliding component (72), is used to provide the transmission slider (91) with a tendency to move toward the second sliding component (72); The second extrusion inclined surface (93) is inclined at a fixed angle in the length direction of the flow channel plate (1) and is arranged on the first sliding component (71); and the transmission sliding block (91) can slidably contact the second extrusion inclined surface (93).

10. The self-centering mechanism for a large-size flow channel plate according to claim 1, characterized in that: Also includes: A negative pressure groove (21) is provided on the main body (2) and can be covered by the flow channel plate (1); The negative pressure source provides negative pressure to the negative pressure groove (21), so as to adsorb the flow channel plate (1).

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