Polar plate alignment mold for liquid injection molding

Abstract

The utility model discloses a polar plate alignment mold for liquid injection molding. The polar plate alignment mold comprises a tool main body, the clamping alignment pin and the movable clamping part are both arranged on the tool main body, the clamping alignment pin and the movable clamping part are opposite and spaced so as to form a pole plate clamping area between the clamping alignment pin and the movable clamping part, and the movable clamping part can move towards the direction of the corresponding clamping alignment pin. By arranging the clamping alignment pin and the movable clamping part, the polar plate can be limited in the polar plate clamping area, so that the polar plate can be aligned and sealed, the risk of polar plate sealing failure caused by the fact that the polar plate is not correctly aligned in the liquid injection machine is reduced, the leakage risk of a fuel cell stack is further reduced, and the performance and the use safety of the fuel cell stack are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to a polar plate alignment mold used for liquid injection molding. Background Art

[0002] The proton exchange membrane fuel cell (PEMFC) is a new type of fuel cell, which consists of a plurality of unit cells connected in series, each of which includes a plate, a membrane electrode assembly (MEA) and a seal. The plate includes an anode plate and a cathode plate, and the membrane electrode assembly is sandwiched between the anode plate and the cathode plate. The sealing performance between the plate and the membrane electrode is a key feature of the fuel cell stack. When the unit cell is sealed, the anode plate, the MEA membrane electrode, and the cathode plate can be placed in a liquid injection machine, and the sealant liquid can be injected into the unit cell to seal it. During the liquid injection process, if the plate is not aligned correctly, the sealing position will change, resulting in failure of the fuel cell stack seal and a high leakage rate. It will also damage other components of the fuel cell stack, resulting in poor performance of the fuel cell stack and failure to meet safety requirements. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a plate alignment mold for liquid injection molding, which is conducive to aligning and sealing the plates and improving the performance and safety of the fuel cell group.

[0004] According to an embodiment of the utility model, a plate alignment mold for liquid injection molding includes: a tooling body; a clamping alignment pin and a movable clamping portion, wherein the clamping alignment pin and the movable clamping portion are both arranged on the tooling body, the clamping alignment pin and the movable clamping portion are opposite to and spaced apart from each other to form a plate clamping area between the clamping alignment pin and the movable clamping portion, and the movable clamping portion can move toward the direction of the corresponding clamping alignment pin.

[0005] According to an embodiment of the utility model, a plate alignment mold for liquid injection molding can confine the plate within a plate clamping area by providing a clamping alignment pin and a movable clamping portion, thereby facilitating alignment and sealing of the plate, reducing the risk of plate sealing failure due to incorrect alignment of the plate in the liquid injection machine, thereby reducing the risk of fuel cell stack leakage and improving the performance and safety of the fuel cell stack.

[0006] In some embodiments of the present invention, there are multiple clamping alignment pins and multiple movable clamping parts, which are arranged circumferentially along the tooling body to define a plate clamping area, and the multiple clamping alignment pins and multiple movable clamping parts are opposite to each other and spaced apart to form multiple pairs of clamping pairs, the clamping alignment pins and the movable clamping parts of some clamping pairs are opposite to each other and spaced apart along a first direction, and the clamping alignment pins and the movable clamping parts of another part of the clamping pairs are opposite to each other and spaced apart along a second direction.

[0007] In some embodiments of the present invention, the first direction and the second direction are perpendicular.

[0008] In some embodiments of the present invention, a plurality of clamping pairs are arranged opposite to each other in sequence along a first direction, and a plurality of clamping pairs are arranged opposite to each other in sequence along a second direction.

[0009] In some embodiments of the present invention, the clamping alignment pins are fixedly arranged on the tooling body, and the movable clamping portion can move in a direction toward the corresponding clamping alignment pins.

[0010] In some embodiments of the present invention, each movable clamping portion is provided with a displacement sensor.

[0011] In some embodiments of the present invention, a first clamping groove is formed on a side of the clamping alignment pin facing the corresponding movable clamping portion, and a second clamping groove is formed on a side of the movable clamping portion facing the corresponding clamping alignment pin.

[0012] In some embodiments of the utility model, the tool body is formed with a mounting groove recessed toward the inside of the tool body, and the clamping alignment pin and the movable clamping part are both arranged in the mounting groove.

[0013] In some embodiments of the present invention, an elastic member is connected between each movable clamping portion and the inner side wall of the installation slot.

[0014] In some embodiments of the present invention, the elastic member is a spring.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a top view of a plate alignment mold for liquid injection molding according to an embodiment of the utility model;

[0018] Figure 2It is a cross-sectional view of a plate alignment mold for liquid injection molding according to an embodiment of the utility model.

[0019] Reference numerals:

[0020] Tool body 1;

[0021] Mounting slot 11;

[0022] Clamping alignment pin 2;

[0023] A first clamping groove 21;

[0024] Mobile clamping part 3;

[0025] A second clamping groove 31;

[0026] Clamping pair 4;

[0027] Plate clamping area 41;

[0028] Displacement sensor 5;

[0029] Elastic member 6;

[0030] Plate 7. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] like Figure 1 and Figure 2 As shown, according to an embodiment of the utility model, a plate alignment mold for liquid injection molding includes: a tooling body 1; a clamping alignment pin 2 and a movable clamping portion 3, the clamping alignment pin 2 and the movable clamping portion 3 are both arranged on the tooling body 1, the clamping alignment pin 2 and the movable clamping portion 3 are opposite and spaced apart to form a plate clamping area 41 between the clamping alignment pin 2 and the movable clamping portion 3, and the movable clamping portion 3 can move toward the direction of the corresponding clamping alignment pin 2.

[0033] The plate alignment mold includes a tooling body 1, a clamping alignment pin 2 and a movable clamping part 3. The tooling body 1 has a supporting function, and the upper surface of the tooling body 1 may have an inwardly recessed mounting groove 11. The clamping alignment pin 2 and the movable clamping part 3 are both provided on the tooling body 1, and the clamping alignment pin 2 may be fixedly assembled on the tooling body 1, for example: the clamping alignment pin 2 may be connected to the tooling body 1 by bolts, and the clamping alignment pin 2 may also be clamped on the tooling body 1, but the present application is not limited thereto, and the clamping alignment pin 2 may also be fixedly assembled on the tooling body 1 by other means, as long as the clamping alignment pin 2 is fixedly arranged on the tooling body 1. The movable clamping part 3 can be movably assembled on the tooling main body 1. For example, the movable clamping part 3 can be movably assembled on the tooling main body 1 through a spring. The movable clamping part 3 can also be assembled on the tooling main body 1 through a spring sheet. However, the present application is not limited to this. The movable clamping part 3 can also be assembled on the tooling main body 1 through other methods, as long as the movable clamping part 3 is arranged on the tooling main body 1.

[0034] As an embodiment of the utility model, the clamping alignment pin 2 and the movable clamping part 3 are both assembled in the mounting groove 11. For example, the clamping alignment pin 2 can be fixed on the bottom wall of the mounting groove 11, and the movable clamping part 3 can be movably connected to the side wall of the mounting groove 11, which is conducive to the clamping alignment pin 2 and the movable clamping part 3 to reliably perform the clamping function in the mounting groove 11.

[0035] The clamping alignment pin 2 and the movable clamping portion 3 are relative and spaced apart to form a pole plate clamping area 41 between the clamping alignment pin 2 and the movable clamping portion 3. The pole plate 7 can be set in the pole plate clamping area 41. The clamping alignment pin 2 and the movable clamping portion 3 clamp the pole plate 7 in the pole plate clamping area 41. During the process of moving the tooling body 1, the pole plate 7 can be stably set in the pole plate clamping area 41, reducing the risk of the pole plate 7 being displaced or scratched due to the movement of the pole plate 7.

[0036] The movable clamping part 3 can move toward the direction of the corresponding clamping alignment pin 2, which is beneficial for the clamping alignment pin 2 and the movable clamping part 3 of the clamping pair 4 to adapt to plates 7 of different sizes, thereby improving the adaptability of the plate alignment mold used for liquid injection molding to plates 7 of various sizes.

[0037] Specifically, the clamping alignment pin 2 is fixedly arranged on the tooling body 1, and the movable clamping part 3 is movably arranged on the tooling body 1. When assembling the electrode plate 7, the adjacent two sides of the electrode plate 7 can be clamped on the movable clamping part 3, and the electrode plate 7 drives the movable clamping part 3 to move in a direction away from the corresponding clamping alignment pin 2, so that the gap between the clamping alignment pin 2 and the movable clamping part 3 is increased, so that the electrode plate 7 can be clamped and assembled with the clamping alignment pin 2. When disassembling the electrode plate 7, the electrode plate 7 drives the movable clamping part 3 to move in a direction away from the corresponding clamping alignment pin 2 while removing the electrode plate 7 from the clamping alignment pin 2, so that the electrode plate 7 can be smoothly assembled or disassembled between the clamping alignment pin 2 and the movable clamping part 3, and in the process of disassembling and assembling the electrode plate 7, since the clamping pair 4 will limit the electrode plate 7, no matter how the operator assembles it, the electrode plate 7 can be assembled in the correct position.

[0038] Therefore, by providing the clamping alignment pin 2 and the movable clamping portion 3, the electrode plate 7 can be confined within the electrode plate clamping area 41, which is beneficial for aligning and sealing the electrode plate 7, reducing the risk of sealing failure of the electrode plate 7 due to the electrode plate 7 not being properly aligned in the liquid injection machine, thereby reducing the risk of leakage of the fuel cell stack and improving the performance and safety of the fuel cell stack.

[0039] In some embodiments of the present invention, Figure 1 As shown, there are multiple clamping alignment pins 2 and multiple movable clamping parts 3, and the multiple clamping alignment pins 2 and multiple movable clamping parts 3 are arranged circumferentially along the tooling body 1 to define a plate clamping area 41. The multiple clamping alignment pins 2 and multiple movable clamping parts 3 are opposite to each other and spaced apart to form multiple pairs of clamping pairs 4. The clamping alignment pins 2 and movable clamping parts 3 of some clamping pairs 4 are opposite to each other and spaced apart along a first direction, and the clamping alignment pins 2 and movable clamping parts 3 of another part of the clamping pairs 4 are opposite to each other and spaced apart along a second direction.

[0040] Among them, there are multiple clamping alignment pins 2 and multiple movable clamping parts 3, for example: the clamping alignment pins 2 and the movable clamping parts 3 can be set to 2, 3 or more, and this application takes the clamping alignment pins 2 and the movable clamping parts 3 as an example for explanation. The tooling body 1 has a supporting function, and the upper surface of the tooling body 1 can have an inwardly recessed mounting groove 11. As an embodiment of the utility model, multiple clamping alignment pins 2 and multiple movable clamping parts 3 are all assembled in the mounting groove 11, for example: multiple clamping alignment pins 2 can be fixed on the bottom wall of the mounting groove 11, and the movable clamping part 3 can be movably connected to the side wall of the mounting groove 11, which is conducive to the multiple clamping alignment pins 2 and the multiple movable clamping parts 3 to reliably play a clamping role in the mounting groove 11.

[0041] A plurality of clamping alignment pins 2 and a plurality of movable clamping parts 3 are arranged along the circumference of the tooling body 1 to define a plate clamping area 41, in which the plate 7 can be arranged, and the plurality of clamping alignment pins 2 and the plurality of movable clamping parts 3 clamp the plate 7 in the plate clamping area 41. In the process of moving the tooling body 1, the plate 7 can be stably arranged in the plate clamping area 41, reducing the risk of the plate 7 being displaced or scratched due to the movement of the plate 7. The plurality of clamping alignment pins 2 and the plurality of movable clamping parts 3 are opposite to each other and spaced apart to form a plurality of clamping pairs 4, that is, a clamping alignment pin 2 and a movable clamping part 3 are opposite to each other, and the mounting groove 11 has opposite side walls, and a clamping alignment pin 2 and a movable clamping part 3 are respectively arranged close to the opposite side walls, so that there is a gap between the opposite clamping alignment pins 2 and the movable clamping part 3, so as to facilitate the assembly of the plate 7 in the plate clamping area 41.

[0042] The clamping alignment pins 2 and the movable clamping portion 3 of the partial clamping pair 4 are opposite and spaced apart along a first direction, i.e. Figure 1 In the X direction, the clamping alignment pins 2 and the movable clamping portion 3 of another part of the clamping pairs 4 are opposite to and spaced apart along the second direction to form a plate clamping area 41 between the clamping alignment pins 2 and the movable clamping portion 3.

[0043] In some embodiments of the present invention, Figure 1 As shown, the first direction and the second direction are perpendicular.

[0044] The second direction is Figure 1 In the Y direction, when the electrode plate 7 is rectangular, the first direction and the second direction of the electrode plate alignment mold for liquid injection molding are perpendicular, that is, the X direction and the Y direction are perpendicular. As some embodiments of the present application, when the electrode plate 7 is a circle or other shape, the first direction and the second direction of the electrode plate alignment mold for liquid injection molding intersect.

[0045] In some embodiments of the present invention, Figure 1 As shown, a plurality of clamping pairs 4 are arranged opposite to each other in sequence along the first direction.

[0046] Among them, multiple pairs of clamping pairs 4 can be arranged relatively in sequence along the first direction, for example: two pairs of clamping pairs 4 can be arranged relatively in sequence along the first direction, three pairs of clamping pairs 4 can be arranged relatively in sequence along the first direction, but the present application is not limited to this, and there can be more pairs of clamping pairs 4 arranged relatively in sequence along the first direction, which is conducive to the reliable limitation of the electrode 7 by multiple pairs of clamping pairs 4 along the second direction, reducing the risk of shaking of the electrode 7 between the clamping pairs 4, and improving the stability of the electrode 7.

[0047] In some embodiments of the present invention, Figure 1 As shown, a plurality of clamping pairs 4 are arranged opposite to each other in sequence along the second direction.

[0048] Among them, multiple pairs of clamping pairs 4 can be arranged relatively in sequence along the second direction, for example: two pairs of clamping pairs 4 can be arranged relatively in sequence along the second direction, three pairs of clamping pairs 4 can be arranged relatively in sequence along the second direction, but the present application is not limited to this, and there can be more pairs of clamping pairs 4 arranged relatively in sequence along the second direction, which is conducive to the reliable limitation of the electrode 7 by multiple pairs of clamping pairs 4 along the first direction, reducing the risk of shaking of the electrode 7 between the clamping pairs 4, and further improving the stability of the electrode 7.

[0049] In some embodiments of the present invention, Figure 2 As shown, the clamping alignment pin 2 is fixedly arranged on the tooling body 1 , and the movable clamping portion 3 can move toward the direction corresponding to the clamping alignment pin 2 .

[0050] Among them, the clamping alignment pin 2 can be fixed on the tooling body 1, for example: the clamping alignment pin 2 can be connected to the tooling body 1 by bolts, and the clamping alignment pin 2 can also be clamped on the tooling body 1, but the present application is not limited to this. The clamping alignment pin 2 can also be fixedly assembled on the tooling body 1 by other means, as long as the clamping alignment pin 2 is fixed to the tooling body 1. The present application takes the clamping alignment pin 2 connected to the tooling body 1 by bolts as an example for explanation. The bolt connection is beneficial to improving the structural stability of the clamping alignment pin 2, reducing the risk of the clamping alignment pin 2 separating from the tooling body 1, so that the electrode plate 7 can be reliably clamped between the clamping alignment pin 2 and the movable clamping part 3, thereby further improving the stability of the electrode plate 7.

[0051] The movable clamping part 3 can move toward the direction of the corresponding clamping alignment pin 2. The movable clamping part 3 can move toward the direction of the corresponding clamping alignment pin 2, which is conducive to smoothly assembling the electrode plate 7 between the clamping alignment pin 2 and the movable clamping part 3. When assembling the electrode plate 7, the adjacent two sides of the electrode plate 7 can be clamped on the movable clamping part 3, and the electrode plate 7 drives the movable movable clamping part 3 to move away from the corresponding clamping alignment pin 2, so that the gap between the clamping alignment pin 2 and the movable clamping part 3 is increased, so that the electrode plate 7 can be clamped and assembled with the clamping alignment pin 2. When disassembling the electrode plate 7, the electrode plate 7 drives the movable movable clamping part 3 to move away from the corresponding clamping alignment pin 2 and removes the electrode plate 7 from the clamping alignment pin 2, so that the electrode plate 7 can be smoothly assembled or disassembled between the clamping alignment pin 2 and the movable clamping part 3. In addition, in the process of disassembling the electrode plate 7, since the clamping pair 4 will limit the electrode plate 7, no matter how the operator assembles it, the electrode plate 7 can be assembled in the correct position.

[0052] In some embodiments of the present invention, Figure 2 As shown, each movable clamping part 3 is provided with a displacement sensor 5 .

[0053] Each movable clamping part 3 may be provided with a displacement sensor 5, which can detect whether the electrode plate 7 is assembled in place. When the electrode plate 7 is not assembled correctly, the displacement sensor 5 issues an alarm, and the operator can reassemble the electrode plate 7 to assemble the electrode plate 7 to the correct position. When the electrode plate 7 is assembled correctly, the displacement sensor 5 will not issue an alarm. In addition, the displacement sensor 5 can detect the dimensional change data between the components, so as to provide the dimensional change data for the subsequent fuel cell group analysis.

[0054] In some embodiments of the present invention, Figure 2 As shown, a first clamping groove 21 is formed on a side of the clamping alignment pin 2 facing the corresponding movable clamping portion 3 , and a second clamping groove 31 is formed on a side of the movable clamping portion 3 facing the corresponding clamping alignment pin 2 .

[0055] Among them, a first clamping groove 21 is formed on one side of the clamping alignment pin 2 facing the corresponding movable clamping part 3, and the first clamping groove 21 is used to clamp the electrode plate 7. Clamping the electrode plate 7 through the first clamping groove 21 can improve the assembly reliability of the clamping alignment pin 2 and the electrode plate 7. A second clamping groove 31 is formed on the side of the movable clamping portion 3 facing the corresponding clamping alignment pin 2. The second clamping groove 31 is used to clamp the electrode plate 7. Clamping the electrode plate 7 through the second clamping groove 31 can improve the assembly reliability of the clamping alignment pin 2 and the electrode plate 7. The two ends of the electrode plate 7 are clamped on the first clamping groove 21 and the second clamping groove 31 respectively. The lower surface of the electrode plate 7 can abut against the bottom walls of the first clamping groove 21 and the second clamping groove 31, which is beneficial for the bottom walls of the first clamping groove 21 and the second clamping groove 31 to support the electrode plate 7, which can further improve the stability of the electrode plate 7 and reduce the risk of the electrode plate 7 falling during the movement of the electrode plate alignment mold used for liquid injection molding. In addition, the two ends of the electrode plate 7 are clamped on the first clamping groove 21 and the second clamping groove 31 respectively, so that the electrode plate 7 has a certain distance from the upper surface of the clamping alignment pin 2, which is beneficial for reducing the risk of the electrode plate 7 adhering to the top mold of the liquid injection machine during the mold opening process after the electrode plate 7 is injection-sealed in the liquid injection machine.

[0056] In some embodiments of the present invention, Figure 2 As shown, the first clamping groove 21 and the second clamping groove 31 are opposite to each other along the arrangement direction of the clamping alignment pin 2 and the corresponding movable clamping part 3 .

[0057] Among them, the first clamping groove 21 and the second clamping groove 31 can be opposite to each other along the arrangement direction of the clamping alignment pin 2 and the corresponding movable clamping part 3. The relative arrangement of the first clamping groove 21 and the second clamping groove 31 can make the two ends of the electrode plate 7 bear force evenly, reducing the risk of the electrode plate 7 being offset due to uneven force on the electrode plate 7, which is beneficial to aligning and sealing the electrode plate 7, and further reducing the risk of sealing failure of the electrode plate 7 due to the electrode plate 7 not being properly aligned in the liquid injection machine.

[0058] In some embodiments of the present invention, Figure 2 As shown, the tool body 1 is formed with a mounting groove 11 which is recessed toward the inside of the tool body 1 , and the clamping alignment pin 2 and the movable clamping part 3 are both arranged in the mounting groove 11 .

[0059] Among them, the tooling body 1 can be formed with an installation groove 11 which is recessed toward the tooling body 1, and the clamping alignment pin 2 and the movable clamping part 3 can be arranged in the installation groove 11, which is conducive to the clamping alignment pin 2 and the movable clamping part 3 to reliably perform the clamping function in the installation groove 11, and reduce the risk of surrounding components interfering with the movable clamping part 3, resulting in the improper assembly of the electrode plate 7.

[0060] In some embodiments of the present invention, Figure 2 As shown, an elastic member 6 is connected between each movable clamping portion 3 and the inner side wall of the mounting groove 11 .

[0061] Among them, an elastic member 6 can be connected between each movable clamping part 3 and the inner side wall of the installation groove 11, so that the movable clamping part 3 can move toward the direction of the corresponding clamping alignment pin 2, which is conducive to the smooth assembly of the electrode plate 7 between the clamping alignment pin 2 and the movable clamping part 3. When assembling the electrode plate 7, the adjacent two sides of the electrode plate 7 can be clamped on the movable clamping part 3, and the electrode plate 7 presses against the movable clamping part 3 to shrink the elastic member 6 between the movable clamping part 3 and the inner side wall of the installation groove 11, and the movable clamping part 3 moves in the direction away from the corresponding clamping alignment pin 2, so that the gap between the clamping alignment pin 2 and the movable clamping part 3 is increased, so that the electrode plate 7 can be clamped and assembled with the clamping alignment pin 2, and the elastic member 6 rebounds to fix the electrode plate 7 between the clamping alignment pin 2 and the movable clamping part 3.

[0062] When removing the electrode plate 7, the electrode plate 7 presses against the movable clamping part 3 to shrink the elastic member 6 between the movable clamping part 3 and the inner wall of the mounting groove 11, and the movable clamping part 3 moves in a direction away from the corresponding clamping alignment pin 2, thereby increasing the gap between the clamping alignment pin 2 and the movable clamping part 3 and removing the electrode plate 7 from the clamping alignment pin 2, so that the electrode plate 7 can be smoothly assembled or disassembled between the clamping alignment pin 2 and the movable clamping part 3.

[0063] In some embodiments of the present invention, Figure 2 As shown, the elastic member 6 is a spring.

[0064] Among them, the elastic member 6 can be set as a spring. Setting the elastic member 6 as a spring can enable the movable clamping part 3 to move toward the direction of the corresponding clamping alignment pin 2, so that the electrode plate 7 can be smoothly assembled between the clamping alignment pin 2 and the movable clamping part 3. In addition, the spring can withstand larger elastic deformation, reducing the risk of failure of the elastic member 6 when the electrode plate 7 is too large, thereby improving the working reliability of the electrode plate alignment mold used for liquid injection molding.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A plate alignment mold for liquid injection molding, characterized in that: include: Tool body (1); A clamping alignment pin (2) and a movable clamping portion (3), wherein the clamping alignment pin (2) and the movable clamping portion (3) are both arranged on the tooling body (1), the clamping alignment pin (2) and the movable clamping portion (3) are opposite to each other and spaced apart to form a plate clamping area (41) between the clamping alignment pin (2) and the movable clamping portion (3), and the movable clamping portion (3) can move in the direction corresponding to the clamping alignment pin (2).

2. The plate alignment mold for liquid injection molding according to claim 1, characterized in that: The clamping alignment pins (2) and the movable clamping parts (3) are both multiple, and the multiple clamping alignment pins (2) and the multiple movable clamping parts (3) are arranged along the circumference of the tooling body (1) to define a plate clamping area (41). The multiple clamping alignment pins (2) and the multiple movable clamping parts (3) are opposed to each other and spaced apart to form multiple clamping pairs (4). The clamping alignment pins (2) and the movable clamping parts (3) of some of the clamping pairs (4) are opposed to each other and spaced apart along a first direction, and the clamping alignment pins (2) and the movable clamping parts (3) of another part of the clamping pairs (4) are opposed to each other and spaced apart along a second direction.

3. The plate alignment mold for liquid injection molding according to claim 2, characterized in that: The first direction and the second direction are perpendicular.

4. The plate alignment mold for liquid injection molding according to claim 2, characterized in that: A plurality of the clamping pairs (4) are arranged relative to each other in sequence along the first direction, and a plurality of the clamping pairs (4) are arranged relative to each other in sequence along the second direction.

5. The plate alignment mold for liquid injection molding according to claim 1, characterized in that: The clamping alignment pin (2) is fixedly arranged on the tooling body (1), and the movable clamping portion (3) can move in the direction corresponding to the clamping alignment pin (2).

6. The plate alignment mold for liquid injection molding according to claim 5, characterized in that: Each of the movable clamping parts (3) is provided with a displacement sensor (5).

7. The plate alignment mold for liquid injection molding according to claim 1, characterized in that: A first clamping groove (21) is formed on the side of the clamping alignment pin (2) facing the corresponding movable clamping portion (3), and a second clamping groove (31) is formed on the side of the movable clamping portion (3) facing the corresponding clamping alignment pin (2).

8. The plate alignment mold for liquid injection molding according to any one of claims 1 to 7, characterized in that: The tool body (1) is formed with a mounting groove (11) which is recessed toward the tool body (1), and the clamping alignment pin (2) and the movable clamping portion (3) are both arranged in the mounting groove (11).

9. The plate alignment mold for liquid injection molding according to claim 8, characterized in that: An elastic member (6) is connected between each of the movable clamping portions (3) and the inner side wall of the installation groove (11).

10. The plate alignment mold for liquid injection molding according to claim 9, characterized in that: The elastic member (6) is a spring.

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