A floating clamping device for positioning welding of bipolar plates of hydrogen fuel cells

Abstract

The present invention provides a floating clamping device for positioning and welding of bipolar plates of hydrogen fuel cells, which can compensate for the problem of incomplete pressing caused by gaps when the tooling is clamped, and ensure the accuracy and reliability of subsequent assembly. It includes a mounting base plate and a positioning plate; the mounting base plate is arranged directly below the positioning plate, and the four corners of the upper plane of the mounting base plate are respectively provided with upwardly convex guide columns, and the guide column sleeve is provided with a linear spring, and the top of the linear spring is supported by a supporting ring, and the supporting ring sleeve is arranged on the guide column; the positioning plate includes two groups of diagonal positioning hole structures, and auxiliary positioning sleeves are respectively pressed in one group of diagonal positioning holes, and the center hole of the auxiliary positioning sleeve passes through the guide column at the corresponding position, and the bottom of the auxiliary positioning sleeve is supported on the supporting ring of the guide column at the corresponding position; one of the diagonal positioning holes of the other group of diagonal positioning holes is pressed with a centering mechanism, and the other diagonal positioning hole is pressed with an angular limiting mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen fuel cell bipolar plate installation, in particular to a hydrogen fuel cell bipolar plate positioning welding floating clamping device. Background Art

[0002] The positioning accuracy of hydrogen fuel cell bipolar plates is very high during assembly. Since the plane accuracy of the parts themselves is not high, it has a great impact on the plane positioning, and the plane states of different parts are also different. The conventional clamping method is to directly set a positioning plate in a fixed position, and then directly press the battery bipolar plate onto the upper surface of the positioning plate by external force and then weld it together. There is a difference in the plane accuracy of the battery bipolar plate and the positioning plate itself. Since the positioning plate is fixed, a gap is generated between the battery bipolar plate and the positioning plate, which makes the positioning installation fail to meet the assembly requirements. Therefore, the existing battery plate installation method makes it impossible to adjust the assembly, which makes the assembly accuracy fail to meet the requirements, directly leading to process instability. Summary of the invention

[0003] In response to the above problems, the present invention provides a floating clamping device for positioning welding of hydrogen fuel cell bipolar plates, which enables the positioning plate to be adaptively matched according to the planar position of the battery bipolar plate. When the tooling is pressed, it can compensate for the problem of incomplete pressing caused by the gap, thereby ensuring the accuracy and reliability of subsequent assembly.

[0004] A floating clamping device for positioning welding of bipolar plates of hydrogen fuel cells, characterized in that it comprises:

[0005] Install the base plate;

[0006] and a positioning plate;

[0007] The mounting base plate is arranged directly below the positioning plate, and the four corners of the upper plane of the mounting base plate are respectively provided with upwardly convex guide columns, and the guide column sleeve is provided with a linear spring, and the top of the linear spring is supported by a supporting ring, and the supporting ring sleeve is arranged on the guide column;

[0008] The positioning plate includes two groups of diagonal positioning hole structures, wherein auxiliary positioning sleeves are respectively pressed into one group of diagonal positioning holes, the center hole of the auxiliary positioning sleeves penetrates the guide column at the corresponding position, and the bottom of the auxiliary positioning sleeves is supported on the supporting ring of the guide column at the corresponding position; one of the diagonal positioning holes of the other group of diagonal positioning holes is pressed into a centering mechanism, and the other diagonal positioning hole is pressed into an angular limiting mechanism;

[0009] The centering mechanism is used to quickly position the corresponding guide column so that the positioning plate can be rotated and flipped as a whole to position the device;

[0010] After the angular limiting mechanism is sleeved on the corresponding guide column, the horizontal angular position of the positioning plate is fixed and the height spatial direction can only be turned over and fine-tuned.

[0011] It is further characterized by:

[0012] The centering mechanism is specifically a universal ball head structure, which includes an inner ring and an outer ring. The outer ring is rotated relative to the inner ring and flipped at any position. The outer periphery of the outer ring is press-fitted into the first opposite positioning hole of the contour. The inner hole of the inner ring is used for the penetration of the guide column at the corresponding position, and the bottom of the inner ring is supported by the supporting ring at the corresponding position, so that after the centering mechanism is positioned at the corresponding guide column, the entire positioning plate can be quickly positioned by universal rotation;

[0013] The angular limiting mechanism specifically comprises a profiling block and two positioning pins. The profiling block is pressed into the second opposite positioning hole of the profiling block. A through guide hole penetrating in the thickness direction is arranged at the center of the profiling block. Two guide holes are arranged on the cross section in the thickness direction of the profiling block. Two positioning pins are inserted into the guide holes and connected to the surface area of ​​the penetrating guide holes. The two positioning pins and the surface area of ​​the penetrating guide holes are combined to form a guide hole groove. The guide column at the corresponding position penetrates the guide hole groove, and the positioning pin and the corresponding outer circumference of the guide column form point contact, so that the positioning plate can be slightly flipped and adjusted relative to the guide column.

[0014] There is a fine adjustment gap between the inner hole of the auxiliary positioning sleeve and the outer annular surface of the guide column, which ensures reliable horizontal adjustment during press-attachment assembly.

[0015] After adopting the structure of the present invention, the centering mechanism of the positioning plate and the corresponding guide column are quickly aligned, and then the angular limit mechanism and the corresponding guide column are quickly aligned, and then the two auxiliary positioning sleeves are aligned and arranged corresponding to the remaining guide columns, so that the four corners of the positioning plate are respectively supported on the supporting rings provided with linear springs, the centering mechanism ensures the accuracy of the reference position of the positioning plate, the angular limit mechanism ensures the accuracy of the horizontal angle position of the positioning plate, and the auxiliary positioning sleeve ensures that the positioning plate conforms to the hydrogen fuel cell bipolar plate for adaptive planar position adjustment after receiving pressure, so that the positioning plate is adaptively matched according to the planar position of the battery bipolar plate, and the problem of uncompacted pressing caused by the gap can be compensated when the tooling is pressed, thereby ensuring the accuracy and reliability of subsequent assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention without the positioning plate body;

[0018] Figure 3It is a top view schematic diagram of the assembly of the angular limiting mechanism and the guide column of the present invention;

[0019] The names corresponding to the serial numbers in the figure are as follows:

[0020] Install the base plate 10, the positioning plate 20, the first opposing positioning hole 21, the second opposing positioning hole 22, the guide column 30, the linear spring 40, the support ring 50, the auxiliary positioning sleeve 60, the centering mechanism 70, the inner ring 71, the outer ring 72, the angular limit mechanism 80, the profiling block 81, the through guide hole 811, the guide hole 812, the positioning pin 82, and the guide hole groove 83. DETAILED DESCRIPTION

[0021] A floating clamping device for positioning and welding bipolar plates of hydrogen fuel cells, see Figure 1-Figure 3 , which includes a mounting base plate 10 and a positioning plate 20;

[0022] The mounting base plate 10 is arranged directly below the positioning plate 20. The four corners of the upper plane of the mounting base plate 10 are respectively provided with upwardly convex guide columns 30. The guide columns 30 are sleeved with linear springs 40. The top of the linear spring 40 is supported by a supporting ring 50. The supporting ring 50 is sleeved on the guide columns 30.

[0023] The positioning plate 20 includes two groups of diagonal positioning hole structures, wherein an auxiliary positioning sleeve 60 is pressed into one group of diagonal positioning holes, the center hole of the auxiliary positioning sleeve 60 passes through the guide column 30 at the corresponding position, and the bottom of the auxiliary positioning sleeve 60 is supported on the support ring 50 of the guide column 30 at the corresponding position; one of the diagonal positioning holes of the other group of diagonal positioning holes is pressed into a centering mechanism 70, and the other diagonal positioning hole is pressed into an angular limit mechanism 80;

[0024] The centering mechanism 70 is used to quickly position the corresponding guide column 30, so that the positioning plate 20 is rotated and flipped as a whole to position the device;

[0025] After the angular limiting mechanism 80 is mounted on the corresponding guide column 30, the horizontal angle position of the positioning plate 20 is fixed, and the height spatial direction can only be turned over and fine-tuned.

[0026] In a specific embodiment, the centering mechanism 70 is specifically a universal ball head structure, which includes an inner ring 71 and an outer ring 72. The outer ring 72 is rotated relative to the inner ring 71 and flipped at any position. The outer periphery of the outer ring 72 is pressed into the first opposite positioning hole 21 of the contour. The inner hole of the inner ring 71 is used for the penetration of the guide column 30 at the corresponding position, and the bottom of the inner ring 71 is supported by the support ring 50 at the corresponding position, so that after the centering mechanism 70 is positioned at the corresponding guide column 30, the entire positioning plate 20 can be universally rotated and quickly positioned; wherein the inner hole of the inner ring is tightly sleeved on the guide column 30 to ensure that no clearance displacement occurs;

[0027] The angular limiting mechanism 80 specifically includes a profiling block 81 and two positioning pins 82. The profiling block 81 is pressed into the second opposite positioning hole 22 of the profiling. A through guide hole 811 penetrating in the thickness direction is provided at the center of the profiling block 81. Two guide holes 812 are provided on the cross section in the thickness direction of the profiling block 81. The two positioning pins 82 are inserted into the guide holes 812 and connected to the surface area penetrating the guide holes 811. The two positioning pins 82 and the surface area penetrating the guide holes 811 are combined to form a guide hole groove 83. The guide column 30 at the corresponding position penetrates the guide hole groove 83, and the positioning pins 82 and the corresponding outer circumference of the guide column 30 form point contact, so that the positioning plate 20 can be slightly flipped and adjusted relative to the guide column 30.

[0028] There is a fine adjustment gap between the inner hole of the auxiliary positioning sleeve 60 and the outer annular surface of the guide column 30 to ensure reliable horizontal adjustment during press-fit assembly.

[0029] In a specific embodiment, the contour block 81 is a cubic block with rounded corners on all sides, the penetrating guide hole 811 is a rounded square hole larger than the diameter of the guide column, and the tops of the four guide columns 30 are all semicircular spherical heads to ensure that no accidental wear occurs during contact.

[0030] Its working principle is as follows: quickly align the centering mechanism of the positioning plate and the corresponding guide column, then quickly align the angular limit mechanism and the corresponding guide column, and then align the two auxiliary positioning sleeves corresponding to the remaining guide columns, so that the four corners of the positioning plate are respectively supported on the supporting rings provided with linear springs. The centering mechanism ensures the accuracy of the reference position of the positioning plate, the angular limit mechanism ensures the accuracy of the horizontal angle position of the positioning plate, and the auxiliary positioning sleeve ensures that the positioning plate conforms to the hydrogen fuel cell bipolar plate for adaptive planar position adjustment after receiving pressure, so that the positioning plate can be adaptively matched according to the planar position of the battery bipolar plate. When the tooling is pressed, the problem of incomplete pressing caused by the gap can be compensated, thereby ensuring the accuracy and reliability of subsequent assembly.

[0031] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A floating clamping device for positioning welding of bipolar plates of hydrogen fuel cells, characterized in that: It includes: Install the base plate; and a positioning plate; The mounting base plate is arranged directly below the positioning plate, and the four corners of the upper plane of the mounting base plate are respectively provided with upwardly convex guide columns, and the guide column sleeve is provided with a linear spring, and the top of the linear spring is supported by a supporting ring, and the supporting ring sleeve is arranged on the guide column; The positioning plate includes two groups of diagonal positioning hole structures, wherein auxiliary positioning sleeves are respectively pressed into one group of diagonal positioning holes, the center hole of the auxiliary positioning sleeves penetrates the guide column at the corresponding position, and the bottom of the auxiliary positioning sleeves is supported on the supporting ring of the guide column at the corresponding position; one of the diagonal positioning holes of the other group of diagonal positioning holes is pressed into a centering mechanism, and the other diagonal positioning hole is pressed into an angular limiting mechanism; The centering mechanism is used to quickly position the corresponding guide column so that the positioning plate can be rotated and flipped as a whole to position the device; The centering mechanism is specifically a universal ball head structure, which includes an inner ring and an outer ring. The outer ring is rotated relative to the inner ring and flipped at any position. The outer periphery of the outer ring is press-fitted into the first opposite positioning hole of the contour. The inner hole of the inner ring is used for the penetration of the guide column at the corresponding position, and the bottom of the inner ring is supported by the supporting ring at the corresponding position, so that after the centering mechanism is positioned at the corresponding guide column, the entire positioning plate can be quickly positioned by universal rotation; After the angular limiting mechanism is mounted on the corresponding guide column, the horizontal angle position of the positioning plate is fixed, and only the height spatial direction can be turned over for fine adjustment; The angular limiting mechanism specifically includes a profiling block and two positioning pins. The profiling block is pressed into the second opposite positioning hole of the profiling. A through guide hole penetrating in the thickness direction is arranged at the center of the profiling block. Two guide holes are arranged on the cross section in the thickness direction of the profiling block. Two positioning pins are inserted into the guide holes and connected to the surface area of ​​the penetrating guide holes. The two positioning pins and the surface area of ​​the penetrating guide holes are combined to form a guide hole groove. The guide column at the corresponding position penetrates the guide hole groove, and the positioning pin and the corresponding outer circumference of the guide column form point contact, so that the positioning plate can be slightly flipped and adjusted relative to the guide column.

2. A floating clamping device for positioning welding of bipolar plates of hydrogen fuel cells as claimed in claim 1, characterized in that: There is a fine adjustment gap between the inner hole of the auxiliary positioning sleeve and the outer annular surface of the guide column.

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