Ultra-thin and ultra-light fuel cell cathode plate bending forming machine

Abstract

The utility model belongs to the technical field of fuel cell composition components, and particularly relates to an ultra-thin and ultra-light fuel cell cathode plate bending forming machine which comprises a shell with a feeding channel, an upper die and a lower die which can reciprocate up and down are sequentially arranged in the feeding channel from top to bottom, the upper die and the lower die are arranged in the shell, the opposite sides of the upper die and the lower die are both provided with bending grooves which are inserted in a staggered mode, a bending area used for stamping and bending is formed between the two bending grooves based on up-down reciprocating motion, and a second rotating shaft is arranged in the shell. According to the invention, the equipment adopts a bending mode to bend and form the straight flow channels of the ultrathin cathode plate of the fuel cell one by one, so that the cathode plate of the ultra-light fuel cell is formed, the functional requirements of the fuel cell are met, and the formed metal bipolar plate by the bending forming method is particularly suitable for an air-cooled proton exchange membrane fuel cell.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fuel cell component technology field, concretely relates to a kind of super thin super light fuel cell cathode plate bending forming machine. BACKGROUND

[0002] Fuel cell cathode plate is one of the key components of fuel cell stack, and is an important part of fuel cell, which directly affects the performance and efficiency of fuel cell. According to different materials, cathode plate is mainly divided into graphite bipolar plate, metal bipolar plate and composite bipolar plate. Among them, metal bipolar plate is popular due to its low production cost, light weight, suitable for mass production and good mechanical strength. At present, metal bipolar plate is mainly realized by stamping forming method, but stamping forming method is mainly used for metal plate thickness greater than or equal to 0.075mm. Less than this thickness metal plate (ultra-thin) stamping forming of bipolar plate is prone to problems such as crack at bending angle, low mechanical support strength, poor consistency of formed gas flow channel, and difficulty in meeting the requirement of flatness, which ultimately affects the output performance of fuel cell, so it cannot meet the functional requirements of fuel cell bipolar plate. In order to realize the requirements of high specific power and lighter weight of small power fuel cell, thinner metal plate is needed to form fuel cell metal bipolar plate. Due to the above problems, the metal bipolar plate formed by stamping forming method (such as less than 0.075mm) cannot meet the functional requirements of fuel cell. SUMMARY

[0003] The utility model aims at providing a kind of super thin super light fuel cell cathode plate bending forming machine to solve the problems raised in the above background technology.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: a kind of super thin super light fuel cell cathode plate bending forming machine, comprising: the shell with feed passage, the upper die and lower die that can reciprocate up and down are sequentially arranged in the feed passage from top to bottom, the side opposite to the upper die and lower die is respectively provided with the folding groove of staggered insertion, the folding groove between the upper and lower die is formed for stamping bending based on the reciprocating motion up and down.

[0005] Preferably, the shell is provided with a rotatable second shaft, the outer portion of the shell is provided with a second motor for driving the second shaft to move, the second shaft is equipped with a second cam, the bottom of the lower die is provided with a second push rod that can reciprocate up and down in longitudinal direction, the side of the second push rod is transversely provided with a second cam passing through the high pair formed by the weight and support rod, and the continuous rotation of the second cam makes the lower die move up and down.

[0006] Preferably, the second rotating shaft is further provided with a third cam for pushing the lower mold to move laterally, one side of the second push rod is longitudinally provided with a side plate abutting against the third cam, and the side of the second push rod away from the third cam is provided with a pushing mechanism for ensuring that the side plate always abuts against the third cam to form a higher pair.

[0007] Preferably, the pushing mechanism comprises a horizontal rod welded to the inner wall of the shell, a guide connecting piece is sleeved on the horizontal rod, a rectangular through hole for the horizontal rod to pass through is arranged on the guide connecting piece, the second push rod is movably and passingly arranged on the guide connecting piece, a baffle is arranged on the horizontal rod, a second spring is arranged on the horizontal rod between the baffle and the guide connecting piece, and the second spring is used for ensuring that the second push rod is in close contact with the second cam.

[0008] Preferably, the shell is provided with a rotatable first rotating shaft, the outer part of the shell is provided with a first motor for driving the first rotating shaft to rotate, the first rotating shaft is provided with a first cam, the top of the upper mold is provided with a connecting piece abutting against the first cam, and the first cam is based on rotation to make the upper mold perform lifting movement.

[0009] Preferably, the connecting piece is sequentially provided with a supporting plate and a first push rod from top to bottom, the inner wall of the shell is welded with a mounting plate, the first push rod is movably and passingly arranged on the mounting plate, the two ends of the bottom of the supporting plate are symmetrically provided with guide rods passingly arranged on the mounting plate, and the supporting plate and the mounting plate are provided with a first spring sleeved on the guide rods.

[0010] Preferably, the shell is symmetrically provided with two openings for feeding and discharging, the two openings are at the same height with the bending area, and the feeding channel is formed between the two openings and the bending area.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) The utility model discloses a upper die, a lower die and a folding groove are arranged to reciprocate up and down, the equipment adopts a bending mode to bend and form each flow channel of the fuel cell ultra-thin cathode plate direct current channel one by one, realizes the forming of the ultra-light fuel cell cathode plate, meets the functional requirement of the fuel cell, and the formed metal bipolar plate through the bending forming method is especially suitable for air-cooled proton exchange membrane fuel cells.

[0013] (2) The utility model discloses a second rotating shaft, a second cam, a supporting rod and a second push rod are arranged, when the second rotating shaft rotates, the second cam, the second push rod and the supporting rod drive the lower mold to reciprocate up and down, and the lower mold is automatically matched or unmated with the upper mold.

[0014] (3) The utility model discloses a third cam and side plate are additionally arranged, so that the lower mould performs transverse reciprocating motion in the process of reciprocating motion up and down, and the continuous bending operation of the ultra -thin metal sheet is completed.

[0015] (4) The utility model discloses a first cam, second shaft and connecting piece are additionally arranged, so that when the first shaft, the lower mould is driven to reciprocate up and down through the first cam and connecting piece, and the upper mould is automatically combined or separated with the upper mould. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the side view of the utility model;

[0017] Figure 2 It is the structure schematic diagram of the utility model;

[0018] Figure 3 It is the local section view of connecting piece of the utility model;

[0019] Figure 4 It is the front view of upper mould, connecting piece, second push rod and lower mould of the utility model;

[0020] Figure 5 It is the perspective view of upper mould, connecting piece, second push rod and lower mould of the utility model;

[0021] In the drawing: 1, first shaft;2, first motor;3, second shaft;4, shell;5, opening;6, upper mould;7, lower mould;8, first push rod;9, guide rod;10, mounting plate;11, first spring;12, supporting plate;13, first cam;14, second push rod;15, guide connecting piece;16, cross bar;17, second spring;18, baffle;19, second cam;20, third cam;21, supporting rod;22, side plate;23, rectangular through hole;24, second motor. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work belong to the scope of protection of the utility model.

[0023] REFERENCE Figures 1-2The utility model provides a kind of super thin super light fuel cell cathode plate bending forming machine shown, comprising: the shell 4 with feed passage, upper die 6 and lower die 7 that can reciprocate up and down are sequentially provided in feed passage from top to bottom, the side opposite of upper die 6 and lower die 7 is equipped with the fold groove of staggered plug-in, based on the reciprocation of upper die and lower die up and down makes the bending area for stamping bending between two fold grooves.

[0024] Combined Figure 2 As shown, the symmetric two sides of shell 4 are penetrated with opening 5 for feeding and discharging, two openings 5 are equal in height with bending area, and feed passage is formed between two openings 5 and bending area.

[0025] Combined Figures 1-2 As shown, second shaft 3 is provided in shell 4, second motor 24 for driving second shaft 3 to move is provided outside shell 4, second cam 19 is assembled on second shaft 3, second push rod 14 that can reciprocate up and down is provided in longitudinal direction of bottom of lower die 7, second cam 19 passes through high pair with supporting plate 21 to form on one side of second push rod 14 in transverse direction, and second cam 19 continuously rotates to make the lifting movement of lower die 7.

[0026] Combined Figures 1-2 As shown, rotatable first shaft 1 is provided in shell 4, first motor 2 for driving first shaft 1 to rotate is provided outside shell 4, first cam 13 is assembled on first shaft 1, connecting piece is provided on the top of upper die 6 and abuts on first cam 13, and first cam 13 makes the lifting adjustment of upper die 6 based on rotation.

[0027] In the above, using the shell 4 provided by the utility model, flat key is installed in key groove of first shaft 1, first cam 13 is inserted from right end of first shaft 1 and closely attached to shaft ring, then stop ring is installed from right end and positioned with locking screw, and bearing is installed at both ends of first shaft 1 respectively;

[0028] Second, flat key is installed in key groove on both sides of shaft ring of second shaft 3, second cam 19 and third cam 20 are installed at both ends of shaft respectively, stop ring is installed at left side of second cam 19 and right side of third cam 20 and positioned with locking screw, and bearing is installed at both ends of second shaft 3 respectively;

[0029] Third, the first shaft 1 and the second shaft 3 shafting structure is respectively supported by the bearing mounting hole at both ends of the shell 4, and the first motor 2 and the second motor 24 are sequentially installed at the right end of the first shaft 1 and the second shaft 3, and the combination of a plurality of cam mechanisms is used to realize the periodic up-down or left-right reciprocating linear motion of the upper die and the lower die, thereby completing the continuous bending of the ultra-thin metal plate, thereby solving the problems of fracture, cracking and strength reduction of the bending angle of the ultra-thin metal plate caused by stamping forming, and the design scheme of the utility model is used to realize the forming of the ultra-thin metal plate into an ultra-thin and ultra-light straight channel metal cathode plate.

[0030] Further, in order to facilitate the periodic up-down reciprocating motion of the upper die 6 with the rotation of the first cam 13, referring to Figures 2-3 The connecting piece is sequentially arranged on the supporting plate 12 and the first push rod 8 from top to bottom, the inner wall of the shell 4 is welded with a mounting plate 10, the first push rod 8 is movably penetrated and mounted on the mounting plate 10, the two ends of the bottom of the supporting plate 12 are symmetrically provided with guide rods 9 penetrating the mounting plate 10, and the guide rod 9 between the supporting plate 12 and the mounting plate 10 is provided with a first spring 11. The first push rod 8 is vertically lifted and limited by the mounting plate 10, so that the first push rod 8 can only reciprocate up and down, the upper die 6 is in contact with the first cam 13 through the first push rod 8, the first spring 11 is vertically mounted between the supporting plate 12 and the mounting plate 10 through the guide rod 9, so that the supporting plate 12 is automatically away from the mounting plate 10 through the elastic force of the first spring 11, thereby automatically lifting the upper die 6. In this process, the supporting plate 12 is always in abutment with the first cam 13, when the first cam 13 rotates, the protruding part on the first cam 13 drives the supporting plate 12 to descend, thereby driving the upper die 6 to descend, when the protruding part is away from the supporting plate 12, the elastic force of the first spring 11 is released, thereby automatically lifting the upper die 6, and the supporting plate 12 is always in abutment with the first cam 13.

[0031] In the utility model, as shown in Figures 2-5 The second shaft 3 is further provided with a third cam 20 for driving the lower die 7 to move horizontally, one side of the second push rod 14 is longitudinally provided with a side plate 22 abutting on the third cam 20, and the side of the second push rod 14 away from the third cam 20 is provided with a driving mechanism for driving the side plate 22 to always abut on the third cam 20.

[0032] In the above, when the third cam 20 and the driving mechanism provided by the utility model are used, the lower die 7 can be driven to move horizontally in the process of reciprocating up and down by the third cam 20 and the driving mechanism, thereby facilitating the feeding of the material.

[0033] Further, in order to facilitate the side plate 22 to always abut on the third cam 20, referring to Figure 2As shown, the pushing mechanism includes a crossbar 16 welded on the inner wall of the shell 4, a guide connecting piece 15 is sleeved on the crossbar 16, a rectangular through hole 23 for the crossbar 16 to pass through is penetrated through the guide connecting piece 15, the second pushing rod 14 is movably penetrated and installed on the guide connecting piece 15, a baffle 18 is arranged on the crossbar 16 between the guide connecting piece 15, and the second spring 17 is arranged on the crossbar 16 between the guide connecting piece 15 and the baffle 18. One end of the second spring 17 is applied to the crossbar 16 through the baffle 18, the guide connecting piece 15 is pushed to one side of the third cam 20 on the crossbar 16 through the elastic force of the second spring 17, so that the side plate 22 on the second pushing rod 14 always abuts against the third cam 20, and when the third cam 20 rotates, the side plate 22 will not be separated from the third cam 20, so that the lower mold 7 is facilitated to move up and down when the third cam 20 rotates.

[0034] Device working principle:

[0035] The ultra-thin metal plate is fed from the right opening 5, and at this time, the upper mold 6 is in the initial position (the highest position); then, the first cam 13 moves from the near rest to the far rest (which is a point), the pushing rod movement law is equal to add and equal to subtract, the first pushing rod 8 reaches the lowest position, the upper mold 6 moves downward once, the lower mold 7 is in the vertical initial position (the lowest position), and a tooth shape of the cathode plate straight flow channel is formed, at this time, the second cam 19 and the third cam 20 are both in the near rest position; then the first cam 13 moves from the far rest position to the near rest position (at this time, the upper mold 6 is in the initial position), the movement law of the first pushing rod 8 is the cosine acceleration movement law, the lower mold 7 is still in the vertical initial position, at this time, the second cam 19 and the third cam 20 are still in the near rest position; then the first cam 13 returns to the initial position (the highest position), the second cam 19 and the third cam 20 are still in the near rest position, and the upper mold 6 and the lower mold 7 return to the initial state; then the first cam 13 is in the near rest position (at this time, the upper mold is in the initial position), the third cam 20 horizontally reaches the far rest from the near rest (at this time, the second pushing rod 14 moves to the leftmost from the right, and the formed flow channel together with the to-be-formed metal plate reaches the leftmost position); the first cam 13 is in the near rest position (at this time, the upper mold 6 is in the initial position), the third cam 20 is in the far rest position in the horizontal direction (the lower mold 7 is in the leftmost position in the horizontal direction, and reaches the highest position in the vertical direction driven by the second cam 19 and the second pushing rod 14 and the lower mold 7), and the metal plate is formed another flow channel; then, the second cam 19 returns to the near rest in the vertical direction (the lower mold 7 reaches the lowest position downward), and then the third cam 20 returns to the near rest in the horizontal direction (the lower mold 7 horizontally reaches the rightmost position), and returns to the initial position.

[0036] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ultra-thin and ultra-light fuel cell cathode plate bending forming machine, characterized in that, include: The housing (4) has a feeding channel, in which an upper mold (6) and a lower mold (7) that can move up and down are arranged sequentially from top to bottom. The upper mold (6) and the lower mold (7) are provided with staggered insertion grooves on opposite sides. Based on the up and down reciprocating motion of the upper mold (6) and the lower mold (7), a bending area for stamping and bending is formed between the two grooves.

2. The bending forming machine for the cathode plate of the ultra-thin and ultra-light fuel cell according to claim 1, characterized in that: The housing (4) is provided with a second rotating shaft (3), and the outside of the housing (4) is provided with a second motor (24) for driving the second rotating shaft (3) to move. A second cam (19) is mounted on the second rotating shaft (3). The bottom of the lower mold (7) is provided with a second push rod (14) that can move up and down in the longitudinal direction. A second cam (19) is provided on one side of the second push rod (14) in the transverse direction. The second cam (19) forms a high pair with the support rod (21) by its own weight. The second cam (19) rotates continuously to make the lower mold (7) move up and down.

3. The bending forming machine for the cathode plate of the ultra-thin and ultra-light fuel cell according to claim 2, characterized in that: The second rotating shaft (3) is also provided with a third cam (20) that pushes the lower mold (7) to move laterally. The second push rod (14) has a side plate (22) that abuts against the third cam (20) on one side longitudinally. The second push rod (14) has a pushing mechanism on the side away from the third cam (20). The pushing mechanism is used to ensure that the side plate (22) always abuts against the third cam (20) to form a high pair.

4. The bending forming machine for the cathode plate of the ultra-thin and ultra-light fuel cell according to claim 3, characterized in that: The pushing mechanism includes a crossbar (16) welded to the inner wall of the housing (4), a guide connector (15) sleeved on the crossbar (16), a rectangular through hole (23) for the crossbar (16) to pass through, a second push rod (14) movably mounted on the guide connector (15), a baffle (18) on the crossbar (16), a second spring (17) installed on the crossbar (16) between the baffle (18) and the guide connector (15), the second spring (17) is used to ensure close contact between the second push rod (14) and the second cam (19).

5. The bending forming machine for the cathode plate of the ultra-thin and ultra-light fuel cell according to claim 1, characterized in that: The housing (4) is provided with a first rotating shaft (1), and the outside of the housing (4) is provided with a first motor (2) connected to the first rotating shaft (1). A first cam (13) is mounted on the first rotating shaft (1). The top of the upper mold (6) is provided with a connecting piece that abuts against the first cam (13). The rotation of the first cam (13) causes the upper mold (6) to move up and down.

6. The bending forming machine for the cathode plate of the ultra-thin and ultra-light fuel cell according to claim 4, characterized in that: The connector is provided with a support plate (12) and a first push rod (8) from top to bottom. An installation plate (10) is welded on the inner wall of the housing (4). The first push rod (8) is movably installed on the installation plate (10). Guide rods (9) that penetrate the installation plate (10) are symmetrically provided at both ends of the bottom of the support plate (12). A first spring (11) sleeved on the guide rod (9) is provided between the support plate (12) and the installation plate (10).

7. The bending forming machine for the cathode plate of the ultra-thin and ultra-light fuel cell according to claim 1, characterized in that: The shell (4) is symmetrically provided with two openings (5) for feeding and discharging materials, the two openings (5) are in the same height with the bending area, and the feeding channel is formed between the two openings (5) and the bending area.

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