A self-centering mechanism for large size runner plates

Abstract

This invention relates to the technical field of flow channel plate processing equipment. Specifically, it discloses a self-centering mechanism for large-size flow channel plates, comprising: a main body; several sets of first positioning components disposed on the main body and located within the cavity of the flow channel plate, capable of synchronously moving along the width direction of the flow channel plate until they abut against the flow channel plate, thereby centering the flow channel plate along the width direction; several sets of second positioning components disposed on the main body and located within the cavity of the flow channel plate, capable of synchronously moving along the length direction of the flow channel plate until they abut against the flow channel plate, thereby centering the flow channel plate along the length direction; and an elastic component for elastically supporting the first and second positioning components. This mechanism can automatically complete the centering of the flow channel plate without manual adjustment, reducing manual labor and improving the production efficiency of the flow channel plate.

Description

Technical Field

[0001] This invention relates to the technical field of flow channel plate processing apparatus, and more particularly to a self-centering mechanism for large-size flow channel plates. Background Technology

[0002] Vanadium electrolyte battery is a novel electrochemical energy storage system that offers advantages over traditional batteries, including higher safety, longer cycle life, lower maintenance costs, and environmental friendliness. The flow channel plate is a crucial component of the vanadium electrolyte battery. Currently, flow channel plates are typically manufactured using injection molding. After injection molding, the surface of the flow channel plate requires machining to complete its production.

[0003] To ensure the accuracy of subsequent machining, the flow channel plate needs to be centered on the worktable first. In the existing flow channel plate centering process, positioning blocks need to be installed on the worktable first, and the flow channel plate is centered by positioning the corner points of the flow channel plate using the positioning blocks.

[0004] Reference Figure 1 As shown, however, cavities for battery fluid flow are usually provided in the flow channel plate. The flow channel plate is not solid, which often leads to a tendency for the flow channel plate to shrink towards 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 unreliable to use positioning blocks and the outer contour of the flow channel plate to achieve centering. Furthermore, during the centering process, the staff needs to adjust the positioning blocks along the length and width directions of the guide plate. The staff cannot guarantee that the adjustment amount of the positioning blocks on both sides of the guide plate is consistent. Such a centering and adjustment process is cumbersome and requires a high level of technical skills from the staff. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, the present invention provides a self-centering mechanism for large-size flow channel plates, the purpose of which is to improve the centering efficiency of the flow channel plates.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0007] A self-centering mechanism for large-size flow channel plates is provided, comprising: a main body; a plurality of first positioning components disposed on the main body and located within the cavity of the flow channel plate, capable of synchronously moving along the width direction of the flow channel plate until they abut against the flow channel plate, thereby centering the flow channel plate along the width direction; a plurality of second positioning components disposed on the main body and located within the cavity of the flow channel plate, capable of synchronously moving along the length direction of the flow channel plate until they abut against the flow channel plate, thereby centering the flow channel plate along the length direction; and an elastic member for elastically supporting the first positioning components and the second positioning components.

[0008] Further, the first positioning component includes: a plurality of first positioning parts disposed on the main body along the length direction of the flow channel plate; wherein, the first positioning parts include at least: two first abutting rods symmetrically disposed along the width direction of the flow channel plate, rotatably disposed on the main body, and capable of rotating to move closer to / away from the length side of the flow channel plate cavity; the second positioning component includes: a plurality of second positioning parts symmetrically disposed on the main body along the length direction of the flow channel plate, slidably mounted on the main body, and capable of linear sliding to move closer to / away from the width side of the flow channel plate cavity; wherein, the elastic member is used to support the first abutting rods and the second positioning parts, providing the first abutting rods and the second positioning parts 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, disposed on the main body, 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 chute, which is formed on the second positioning component along the length of the flow channel plate; a plurality of guide pins, which are disposed on the main body along the length of the flow channel plate, and the second chute is slidably fitted onto the guide pins; a second base, which is disposed on the main body and located on one side of the second positioning component along the length 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: several wedge-shaped blocks, arranged along the contour of the flow channel plate cavity on the first abutment rod and the second positioning component.

[0012] Further, the first positioning component includes: a plurality of first sliding components, slidably disposed on the main body along the width direction of the flow channel plate; the second positioning component includes: a plurality of second sliding components, slidably disposed on the main body along the length direction of the flow channel plate; a transmission component, for transmittingly connecting the first sliding components and the second sliding components; a power component, for driving the plurality of second sliding components to slide synchronously, and for driving the plurality of first sliding components to slide synchronously; wherein, the elastic component (5) is used to support the first sliding components and the second sliding components, and to provide the first sliding components and the second sliding components with a tendency to move toward the length side and width side away from the cavity of the flow channel plate (1), respectively.

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

[0014] Furthermore, the transmission assembly includes: a transmission slider, slidably disposed on the main body along the length direction of the flow channel plate; an adjusting spring, one end of which abuts against the transmission slider and the other end of which abuts against the second sliding member, for providing the transmission slider with a tendency to move toward the second sliding member; a second extrusion ramp, inclined at a fixed angle to the length direction of the flow channel plate, disposed on the first sliding member; and the transmission slider slidably abuts against the second extrusion ramp;

[0015] Furthermore, the mechanism also includes: a negative pressure tank, which is formed 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 tank 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 component and the second positioning component 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 work of the flow channel plate without manual adjustment, thereby reducing the amount of manual labor and improving the production and processing efficiency of the flow channel plate. Attached Figure Description

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

[0018] Figure 2 This is an overall top view of the centering mechanism provided in Embodiment 1;

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

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

[0021] Figure 5 This is an overall top view of the centering mechanism provided in Embodiment 2;

[0022] Figure 6 for Figure 5 Enlarged view of point A;

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

[0024] Figure 8 for Figure 5 Enlarged diagram of point B;

[0025] Figure 9 An internal mounting cross-sectional view of the first sliding component provided in Embodiment 2;

[0026] The components include: 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 inclined surface; 91. Transmission slider; 92. Adjusting spring; 93. Second extrusion inclined surface; 100. Mounting screw; 101. Roller; 102. First mounting seat; 103. Second mounting seat; 104. Third mounting seat; 105. Slide rod; 106. Guide shaft. Detailed Implementation

[0027] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0028] Example 1

[0029] This invention provides a self-centering mechanism for large-size flow channel plates, comprising: a main body 2; several sets of first positioning components disposed on the main body 2 and located within the cavity of the flow channel plate 1, 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; several sets of second positioning components disposed on the main body 2 and located within the cavity of the flow channel plate 1, 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; and an elastic member 5 for elastically supporting the first and second positioning components.

[0030] Reference Figure 2 As shown, in this embodiment, the first positioning component includes: a plurality of first positioning parts 3, which are disposed on the main body 2 along the length direction of the flow channel plate 1; wherein, the first positioning part 3 includes at least: two first abutting rods 31 symmetrically disposed along the width direction of the flow channel plate 1, which are rotatably disposed on the main body 2 and are capable of rotating to move closer to / away from the length side of the cavity of the flow channel plate 1; the second positioning component includes: a plurality of second positioning parts 4, which are symmetrically disposed 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 to move closer to / away from the width side of the cavity of the flow channel plate 1; wherein, the elastic part 5 is used to support the first abutting rods 31 and the second positioning parts 4, providing the first abutting rods 31 and the second positioning parts 4 with a tendency to move towards the length side and the width side of the cavity of the flow channel plate 1, respectively.

[0031] In practical use, the elastic components 5 are initially in a compressed state. The elastic components 5 are all made of the same specification spring in the same centering direction. By compressing the elastic components 5 to the same stroke, several sets of positioning components in the same centering direction can move synchronously to the same distance. Then, the elastic components 5 are released. The elastic components 5 in different centering directions provide the first abutting rod 31 and the second positioning component 4 with the tendency to move towards the length and width sides of the cavity of the flow channel plate 1, respectively. The first abutting rod 31 and the second positioning component 4 abut against the length and width sides of the cavity of the flow channel plate 1, respectively. This can automatically overlap the geometric center of the main body 2 with the geometric center of the flow channel plate 1, complete the automatic centering of the flow channel plate 1, simplify the centering process of the flow channel plate 1, eliminate the need for staff to adjust, and improve the centering efficiency.

[0032] Reference Figure 3 As shown, the first positioning component 3 further includes: a first rotating shaft 32, disposed on the main body 2, with the middle part of the first abutting rod 31 hinged to the second rotating shaft 32; the second rotating shaft 33 is disposed at the end of the first abutting rod 31 away from the flow channel plate 1, and in this embodiment, the end of the first abutting rod 31 away from the second rotating shaft 33 is used to abut against the flow channel plate 1; a driving component 34, slidably disposed on the main body 2, capable of sliding along the length direction of the flow channel plate 1; a first sliding groove 35, opened on the driving component 34 along the width direction of the flow channel plate 1, with the second rotating shaft 33 slidably disposed within 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 further includes: a first base 36, disposed on the main body 2, 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.

[0033] It is worth mentioning that a slide rail is installed on the main body 2, and the drive component 34 is slidably sleeved on the slide rail. The elastic component 5 can be squeezed by the staff moving the drive component 34 towards the first base 36.

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

[0035] Reference Figure 4As shown, the mechanism further includes: a second slide groove 41, which is formed 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 is 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 corresponding to the two second positioning components 4 are also of the same specification. The two second positioning components 4 compress the two elastic components 5 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, so as to ensure the centering accuracy of the flow channel plate 1 in the length direction.

[0037] Specifically, the mechanism also includes: a number of wedge-shaped blocks 6, which are disposed 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-shaped blocks 6 are conical and are used for the descent and positioning of the flow channel plate 1.

[0038] Specifically, two first positioning components 3 and two second positioning components 4 are provided on the main body 2. Within the cavity of the flow channel plate 1, six wedge blocks 6 are provided on the first abutment rod 31 and the second positioning components 4 in a centrally symmetrical manner about the geometric center of the main body 2. When the flow channel plate 1 contacts the six wedge blocks 6, it contracts. 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, 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, slidably disposed 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, slidably disposed on the main body 2 along the length direction of the flow channel plate 1; a transmission component, which drives the first sliding components 71 and the second sliding components 72 to slide synchronously; and a power component, which drives the plurality of second sliding components 72 to slide synchronously and drives the plurality of first sliding components 71 to slide synchronously; wherein, the elastic component 5 is used to support the first sliding components 71 and the second sliding components 72, and to provide the first sliding components 71 and the second sliding components 72 with a tendency to move toward the length side and width side away from the cavity of the flow channel plate 1, respectively.

[0041] In this embodiment, the power component provides power to drive several second sliding parts 72 to slide synchronously along the length direction, and can also drive several first sliding parts 71 to slide synchronously along the width direction, automatically completing the centering operation of the flow channel plate 1 in the length and width directions; making the entire centering operation more stable and reliable, and further improving 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 disassembled, 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 away from the length and width sides of the cavity of the flow channel plate 1 to reset, and complete the unloading.

[0043] Specifically, the power assembly includes: a telescopic component 81, the extension and retraction direction of the piston rod of the telescopic component 81 being arranged 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 inclined surfaces 83, inclined at a fixed angle to the width direction of the flow channel plate 1, symmetrically arranged on the power block 82 along the length direction of the flow channel plate 1; and two second sliding components 72 respectively slidingly contacting the two first extrusion inclined surfaces 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, which in turn drives the power block 82 to move along the width direction of the flow channel plate 1. The first extrusion inclined surface 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 disposed 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 member 72, for providing the transmission slider 91 with a tendency to move toward the second sliding member 72; a second extrusion slope 93, which is inclined at a fixed angle to the length direction of the flow channel plate 1 and disposed on the first sliding member 71; and the transmission slider 91 slidably abuts against the second extrusion slope 93.

[0046] In actual operation, during 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, thus pushing the transmission slider 91 to move. During the movement of the transmission slider 91, the second squeezing inclined surface 93 is squeezed, which simultaneously pushes the first sliding components 71 on both sides of the transmission slider 91 along the width direction until the first sliding components 71 abut against the flow channel plate 1, completing the centering of the flow channel plate 1 in the width direction. The second sliding component 72 continues to move, continues to squeeze the adjusting spring 92, and gradually increases the thrust applied by the transmission slider 91 to the first sliding component 71, ensuring the stability of the centering support of the first sliding component 71 on the flow channel plate 1, until the second sliding component 72 abuts against the flow channel plate 1, completing the centering of the flow channel plate 1 in the length direction.

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

[0048] Preferably, a roller 101 can be added to the transmission slider 91 for rolling contact with the second extrusion slope 93.

[0049] In this embodiment, the mechanism further includes: a negative pressure groove 21, which is formed 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 adsorb and fix the flow channel plate 1 that has completed the centering work onto the main body 2 by drawing a vacuum into the negative pressure groove 21, so as to facilitate subsequent machining operations on the flow channel plate 1.

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

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

[0052] Preferably, a roller 101 can also be added to the third mounting base 104 for rolling contact with the first extrusion slope 83.

[0053] In the specific centering operation, the flow channel plate 1 is first placed on the main body 2. Of course, the first positioning component and the second positioning component are both located in the cavity of the flow channel plate 1. Then, high-pressure gas is injected into the cylinder, which drives the piston rod of the cylinder to move along the width direction of the flow channel plate 1, causing the power block 82 to move along the width direction of the flow channel plate 1. The first extrusion inclined surface 83 extrudes the third mounting seat 104, pushing the third mounting seat 104, the slide rod 105 and the second sliding component 72 to move, and extruding the elastic component 5. During the movement of the second sliding component 72, the mounting screw 100 is also driven to be extruded. Pressing the adjusting spring 92 pulls the transmission slider 91 to press the second pressing inclined surface 93; this pushes the first sliding component 71 to slide along the width direction of the flow channel plate 1 and presses 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 press the adjusting spring 92 to ensure that the first sliding component is stably abutting 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 resets, the elastic component 5 restores its deformation, and resets the first sliding component 71 and the second sliding component 72.

[0054] Those skilled in the art will understand that although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention. Clearly, those skilled in the art can make various alterations and modifications to the invention without departing from its spirit and scope. Thus, if these modifications and modifications of the invention fall within the scope of the machine equivalents of the claims, the invention also intends to include these modifications and modifications.

Claims

1. A self-centering mechanism for large-size flow channel plates, characterized in that, include: Main body (2); Several sets of first positioning components are set on the main body (2) and are located in the cavity of the flow channel plate (1). They can move synchronously along the width direction of the flow channel plate (1) until they abut against the flow channel plate (1), thereby dividing the flow channel plate (1) in the width direction of the flow channel plate (1). Several sets of second positioning components are set on the main body (2) and are located in the cavity of the flow channel plate (1). They can move synchronously along the length direction of the flow channel plate (1) until they come into contact with the flow channel plate (1), thereby dividing the flow channel plate (1) in the length direction of the flow channel plate (1). The elastic component (5) is used to elastically support the first positioning component and the second positioning component; The first positioning component includes: a plurality of first sliding parts (71), which are slidably disposed 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 parts (72), which are slidably disposed on the main body (2) along the length direction of the flow channel plate (1); The transmission assembly drives the first sliding component (71) and the second sliding component (72) together. A power assembly is used to drive several second sliding parts (72) to slide synchronously, and to drive several first sliding parts (71) to slide synchronously. Among them, the elastic component (5) is used to support the first sliding component (71) and the second sliding component (72), and to provide the first sliding component (71) and the second sliding component (72) with a tendency to move toward the length side and width side away from the cavity of the flow channel plate (1), respectively; The power components include: Telescopic component (81), the piston rod of the telescopic component (81) is arranged along the width direction of the flow channel plate (1); The power block (82) is mounted on the piston rod of the telescopic component (81); Two first extrusion slopes (83) are inclined at a fixed angle to 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). Two second sliding parts (72) slide in contact with the two first extrusion slopes (83) respectively. The transmission components include: The transmission slider (91) is slidably disposed on the main body (2) along the length direction of the flow channel plate (1); An adjusting spring (92) abuts against the transmission slider (91) at one end and against the second sliding component (72) at the other end, and is used to provide the transmission slider (91) with a tendency to move toward the second sliding component (72); The second extrusion ramp (93) is inclined at a fixed angle to the length direction of the flow channel plate (1) and is disposed on the first sliding member (71); and the transmission slider (91) slidably abuts against the second extrusion ramp (93).

2. The self-centering mechanism for large-size flow channel plates according to claim 1, characterized in that, Also includes: The negative pressure groove (21) is located 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 tank (21), which can adsorb the flow channel plate (1).

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