Continuous production line of PPS diaphragm for hydrogen fuel cell

Abstract

The embodiment of the invention discloses a continuous production line of a PPS diaphragm for a hydrogen fuel cell. The continuous production line comprises pretreatment equipment, a film extruder, stretching equipment, a cooling shaping channel, an edge trimmer and a winding machine which are sequentially arranged according to the production line, wherein the primary longitudinal stretching mechanism, the transverse stretching mechanism and the secondary longitudinal stretching mechanism are all arranged in a semi-closed box body, and the box body can avoid loss of most heat; the primary longitudinal stretching mechanism is communicated with the transverse stretching mechanism through a variable temperature channel I, and the secondary longitudinal stretching mechanism is communicated with the transverse stretching mechanism through a variable temperature channel II; and two groups of stretching devices are arranged in the transverse stretching mechanism and can respectively finish primary transverse stretching and secondary transverse stretching on line. According to the invention, the PPS diaphragm can be transversely stretched on line, automatic on-line continuous production is realized, the production efficiency is improved, the quality is ensured, the cost is saved, and the requirements of large-scale production are met.

Description

Technical Field

[0001] The present invention relates to the technical field of PPS diaphragm production, and particularly to a continuous production line for PPS diaphragms used in hydrogen fuel cells. Background Art

[0002] As an efficient and clean energy conversion device, hydrogen fuel cells have broad application prospects in the new energy field. The PPS (polyphenylene sulfide) diaphragm is one of the key components of hydrogen fuel cells, and its performance directly affects the efficiency and service life of hydrogen fuel cells. With the rapid development of hydrogen fuel cell technology, the demand for PPS diaphragms is also increasing day by day.

[0003] Currently, most of the existing PPS diaphragm production adopts an intermittent production method, which has problems such as low production efficiency, unstable product quality, and high production cost, and cannot meet the needs of large-scale production. Among them, the most crucial problem that cannot achieve continuous online production is that when producing PPS diaphragms, not only longitudinal stretching is required, but also transverse stretching is needed (the purpose is to further improve the strength and flexibility of PPS diaphragms, and at the same time optimize the pore structure of PPS diaphragms to make them have better air permeability and ion permeability).

[0004] The main functions of the PPS diaphragm are to prevent the anode and cathode from directly contacting, avoid short-circuit phenomena, and ensure the safe progress of electrochemical reactions between the electrodes. Allow hydrogen and oxygen to pass through, while preventing the two from mixing, and ensure the efficient progress of the reaction. Prevent moisture penetration in the electrolytic cell, avoid electrolyte leakage or corrosion. Achieve rapid transmission of hydrogen and oxygen through a high pore structure, and reduce the reaction resistance. The PPS diaphragm undoubtedly plays a crucial role in hydrogen fuel cells. Therefore, when producing PPS diaphragms, stretching in both the longitudinal and transverse directions is required to ensure that its functions and quality meet the requirements.

[0005] And online transverse stretching is the key problem that needs to be solved urgently to achieve continuous online production.

[0006] Therefore, we propose a production line that can achieve continuous online production of PPS diaphragms, and has high production efficiency, stable product quality, and low cost. Summary of the Invention

[0007] In view of this, the present invention provides a continuous production line for PPS diaphragms used in hydrogen fuel cells, which is used to solve the problem that the existing PPS diaphragms cannot achieve online transverse stretching and are not easy to carry out large-scale and efficient production.

[0008] A continuous production line for PPS diaphragms used in hydrogen fuel cells includes a pretreatment device, a film extruder, a stretching device, a cooling and shaping channel, a trimming machine, and a winding machine arranged in the order of the production line;

[0009] Among them, the stretching device includes a primary longitudinal stretching mechanism, a transverse stretching mechanism, and a secondary longitudinal stretching mechanism. The primary longitudinal stretching mechanism, the transverse stretching mechanism, and the secondary longitudinal stretching mechanism are all arranged in a semi-closed box body, and this box body can avoid most of the heat loss;

[0010] The transverse stretching mechanism is arranged in a "Z" shape. The primary longitudinal stretching mechanism is fixed to the top of one end of the transverse stretching mechanism through a connecting frame, while the secondary longitudinal stretching mechanism is fixed to the bottom of the other end of the transverse stretching mechanism through a connecting frame;

[0011] The primary longitudinal stretching mechanism is communicated with the transverse stretching mechanism through a temperature-changing channel I, and the secondary longitudinal stretching mechanism is communicated with the transverse stretching mechanism through a temperature-changing channel II;

[0012] Two sets of stretching devices are arranged inside the transverse stretching mechanism, and the two sets of stretching devices can respectively complete primary transverse stretching and secondary transverse stretching online.

[0013] Preferably, each set of the above-mentioned stretching devices includes two annular tracks and multi-section track cars connected end to end. The track cars can move on the tracks. Among them, the two tracks are respectively located on both sides of the film to be transversely stretched, and parallel sections parallel to the side edges of the film are arranged on the opposite sides of the two tracks;

[0014] A fixing seat is fixedly connected to each section of the track car, and a clamp is slidably installed on the fixing seat, and the clamp can slide perpendicular to the side edge of the film;

[0015] It also includes a pair-clamping guide rail arranged above the track car and fixed separately. The clamp can clamp both sides of the film under the guidance of the pair-clamping guide rail and driven by the track car, and can realize transverse stretching.

[0016] Preferably, the above-mentioned also includes a servo motor. The track car is driven and controlled by the servo motor. At the same time, the traction speed of the film in the transverse stretching mechanism is set to be synchronized with the moving speed of the track car.

[0017] Preferably, a strip-shaped seat is fixedly connected to the fixing seat. A sliding groove is opened on the strip-shaped seat. A slider is slidably installed in the sliding groove. A sliding hole I is opened on the slider. A guide rod is installed inside the strip-shaped seat. The guide rod slidably penetrates through the sliding hole I. A spring I is arranged on the guide rod, and one end of the spring I abuts against one end of the slider; the clamp is fixedly installed on the slider.

[0018] Preferably, one end of the guide rod is provided with a threaded portion and a knob. A threaded hole is provided through one end of the chute, and a circular groove is provided inside the other end of the chute. The guide rod is threadedly installed on the strip-shaped seat, and one end of the guide rod is inserted into the circular groove.

[0019] Preferably, the fixture includes an upper clamping plate, a lower clamping plate, and a connecting seat fixedly connected to the top of the slider. Two sliding columns are fixedly connected to the connecting seat. Slide holes II are provided on both the upper clamping plate and the lower clamping plate, and both the upper clamping plate and the lower clamping plate are slidably sleeved on the sliding columns. Springs II are sleeved on the upper and lower parts of the two sliding columns. Ball sockets are provided at the top of the upper clamping plate and the bottom of the lower clamping plate. A ball is movably installed in the ball socket, and the ball can enter the opposed-clip guide rail and roll.

[0020] Preferably, elastic clamping plates are fixedly connected to the bottom of the upper clamping plate and the top of the lower clamping plate respectively and are arranged in alignment. The elastic clamping plates are made of Teflon rubber; slope surfaces are provided at the top of the upper clamping plate and the bottom of the lower clamping plate.

[0021] Preferably, both ends of the opposed-clip guide rail are provided as expansion openings.

[0022] Preferably, the opposed-clip guide rail includes a first parallel part at the head, a stretching part with a smooth transition in the middle, and a last parallel part at the end.

[0023] Preferably, both the temperature-changing channel I and the temperature-changing channel II are vertically arranged, and multiple groups of opposed baffles are provided on both sides inside the temperature-changing channel I and the temperature-changing channel II. A gap for the film to pass through is left between the flush baffles.

[0024] Implementing the embodiments of the present invention will have the following beneficial effects:

[0025] After adopting the above-mentioned continuous production line for PPS diaphragms for hydrogen fuel cells;

[0026] It can realize the transverse stretching of the PPS diaphragm online, achieve automated online continuous production, improve production efficiency, ensure quality, save costs, and meet the requirements of large-scale production;

[0027] By arranging the primary longitudinal stretching mechanism, the transverse stretching mechanism, and the secondary longitudinal stretching mechanism in a semi-enclosed box body, and setting the temperature-changing channel I and the temperature-changing channel II; the transverse stretching and the longitudinal stretching are respectively in different corresponding temperature ranges, further improving the production quality;

[0028] Through the cooperation of the rail vehicle, rail, fixture and clamping guide rail in the stretching device, the operations of clamping, relaxing and laterally stretching the PPS diaphragm can be realized, and the production line does not need to be paused during the process, with high efficiency. At the same time, there is no need for cylinders, cylinder control systems, etc. for clamping and the layout of air channels, and the structure is simple, easy to manufacture and implement.

[0029] The fixture adopts structures such as an upper clamping plate, a lower clamping plate, a sliding column, a spring II, and a ball. It not only has a simple structure, but also is convenient for disassembly, replacement and maintenance. Brief Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Among them:

[0032] Figure 1 It is a schematic structural diagram of a continuous production line for PPS diaphragms used in a hydrogen fuel cell in an embodiment;

[0033] Figure 2 It is a schematic structural diagram of a stretching device in an embodiment;

[0034] Figure 3 It is a schematic structural diagram inside a stretching device in an embodiment;

[0035] Figure 4 It is a schematic structural diagram of a stretching device in an embodiment;

[0036] Figure 5 It is a schematic structural diagram of a fixture in an embodiment;

[0037] Figure 6 It is a schematic side structural diagram of the fixture holding the film in an embodiment;

[0038] Figure 7 It is a schematic side structural diagram of a clamping guide rail in an embodiment;

[0039] Figure 8 It is a schematic top view structural diagram of a clamping guide rail in an embodiment.

[0040] Reference Numerals: 100, pretreatment equipment; 200, film extruder; 300, stretching device; 400, cooling and shaping channel; 500, edge trimming machine; 600, rewinder.

[0041] 301. Primary longitudinal stretching mechanism; 302. Temperature-changing channel I; 303. Transverse stretching mechanism; 304. Temperature-changing channel II; 305. Secondary longitudinal stretching mechanism; 306. Connecting frame; 307. Baffle plate

[0042] 700. Stretching device; 701. Track; 702. Rail vehicle; 703. Parallel section

[0043] 800. Fixed seat; 801. Strip seat; 802. Chute; 803. Round groove; 804. Spring I; 805. Guide rod; 806. Threaded hole; 807. Knob; 808. Threaded part

[0044] 900. Slider; 901. Slide hole I; 902. Connecting seat; 903. Slide post; 904. Spring II; 905. Slide hole II; 906. Lower clamping plate; 907. Elastic clamping plate; 908. Upper clamping plate; 909. Sloping surface; 910. Ball socket; 911. Ball; 999. Film

[0045] 50. Clamping guide rail; 51. First parallel part; 52. Stretching part; 53. Last parallel part; 54. Expansion opening Detailed implementation manners

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order

[0047] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments

[0048] In order to enable those skilled in the technical field to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the drawings

[0049] Embodiment 1:

[0050] Please refer to Figure 1-8, A continuous production line for PPS diaphragms used in hydrogen fuel cells, including a pretreatment device 100, a film extruder 200, a stretching device 300, a cooling and shaping channel 400, a trimming machine 500, and a winding machine 600 arranged in the order of the production line; it should be noted that the pretreatment device 100, the film extruder 200, the cooling and shaping channel 400, the trimming machine 500, and the winding machine 600 all belong to the prior art.

[0051] For example, the pretreatment device 100 can include a raw material storage bin, a dryer, and a screw conveyor, which store, dry, and convey the PPS raw materials to the next process. It can even include a mixer, a metering unit, and a pipeline conveying system (pneumatic conveying method), and the mixer mixes raw materials such as PPS resin and additives.

[0052] The film extruder 200 includes the extruder itself and a die. The extruder itself heats and melts the pretreated PPS raw materials to make them reach a flowable state, and pushes the molten PPS raw materials forward through the rotation of the screw. The die is used to extrude the molten PPS raw materials into a film blank with a certain thickness and width. The extruder itself uses a twin-screw extruder, which has good mixing effect, can fully melt and mix the PPS raw materials, and ensure the quality uniformity of the film blank. The die orifice size can be adjusted according to the specifications of the required PPS diaphragm to produce film blanks of different sizes. And the trimming machine 500 and the winding machine 600 can use conventional trimming equipment and winding equipment.

[0053] Most importantly, as shown in Figure 3 , the stretching device 300 includes a primary longitudinal stretching mechanism 301, a transverse stretching mechanism 303, and a secondary longitudinal stretching mechanism 305. The primary longitudinal stretching mechanism 301, the transverse stretching mechanism 303, and the secondary longitudinal stretching mechanism 305 are all arranged in a semi-closed box body, and this box body can avoid most of the heat loss. It should be noted that a temperature control system is arranged in the box body.

[0054] The main purpose of the above design is to isolate different temperature regions. When stretching transversely, the film 999 already has a certain degree of longitudinal crystal orientation, so a higher temperature is required to overcome the crystallization resistance and promote crystal recombination. Usually, the transverse stretching temperature is 15 - 25 °C higher than the longitudinal stretching temperature, so as to better ensure the quality of transverse stretching.

[0055] It should be noted that the primary longitudinal stretching mechanism 301 and the secondary longitudinal stretching mechanism 305 are both prior art, which can be achieved through the speed difference between the rollers, and will not be elaborated here.

[0056] Secondly, as shown in Figure 3In it, the horizontal stretching mechanism 303 is arranged in a "Z" shape (saving floor space and facilitating the balance of the temperature inside the temperature-changing channel I 302 and the temperature-changing channel II 304 according to the principle that hot air rises and cold air descends). The primary longitudinal stretching mechanism 301 is fixed to the top of one end of the horizontal stretching mechanism 303 through the connecting frame 306, while the secondary longitudinal stretching mechanism 305 is fixed to the bottom of the other end of the horizontal stretching mechanism 303 through the connecting frame 306. The primary longitudinal stretching mechanism 301 is communicated with the horizontal stretching mechanism 303 through the temperature-changing channel I 302, and the secondary longitudinal stretching mechanism 305 is communicated with the horizontal stretching mechanism 303 through the temperature-changing channel II 304.

[0057] During implementation, as Figure 3 shown in, the temperature-changing channel I 302 and the temperature-changing channel II 304 are both arranged vertically, and multiple groups of oppositely arranged baffles 307 are arranged on both inner sides of the temperature-changing channel I 302 and the temperature-changing channel II 304. A gap for the film 999 to pass through is left between the flush baffles 307.

[0058] Among them, the purpose of the temperature-changing channel I 302 is to complete the temperature increase of the film 999 before entering the primary horizontal stretching after experiencing the primary longitudinal stretching. The purpose of the temperature-changing channel II 304 is to complete the temperature decrease of the film 999 before entering the secondary longitudinal stretching after experiencing the secondary horizontal stretching. In this way, the stretching operation can always be carried out within an online controllable temperature range, ensuring the quality of the product.

[0059] Most importantly, two sets of stretching devices 700 are arranged inside the horizontal stretching mechanism 303, and the two sets of stretching devices 700 can respectively complete the primary horizontal stretching and the secondary horizontal stretching online.

[0060] During implementation, as Figure 7 and Figure 8 shown in, both ends of the clamping guide rail 50 are arranged as expansion openings 54. The clamping guide rail 50 includes a head parallel part 51, a stretching part 52 with a smooth transition in the middle, and a tail parallel part 53.

[0061] Embodiment 2:

[0062] Different from Embodiment 1, as Figures 4-8 shown in, this embodiment discloses the specific structure of a stretching device 700 mentioned in Embodiment 1.

[0063] Among them, as Figure 4Among them, each stretching device 700 includes two annular tracks 701 and a multi-section track vehicle 702 connected end to end. The track vehicle 702 can move on the track 701. Among them, the two tracks 701 are respectively located on both sides of the film 999 to be transversely stretched, and parallel segments 703 parallel to the side of the film 999 are provided on the opposite sides of the two tracks 701; among them, the purpose of the parallel segment 703 is to facilitate the track vehicle 702 to move parallel and synchronously with the film 999.

[0064] During implementation, as Figure 5 shown in, a fixing seat 800 is fixedly connected to each section of the track vehicle 702, and a clamp is slidably installed on the fixing seat 800, and the clamp can slide perpendicular to the side of the film 999.

[0065] Specifically, it further includes a clamping guide rail 50 fixedly installed separately above the track vehicle 702 (the clamping guide rail 50 can enable the clamp to perform clamping, not itself can clamp, itself is fixed), and the clamp can clamp both sides of the film 999 and can achieve transverse stretching under the guidance of the clamping guide rail 50 and the drive of the track vehicle 702.

[0066] During implementation, it further includes a servo motor. The track vehicle 702 is driven and controlled by the servo motor. At the same time, the traction speed of the film 999 in the transverse stretching mechanism 303 is set to be synchronized with the moving speed of the track vehicle 702. During implementation, the speed of the track vehicle 702 is kept the same as the traction speed of the film 999. In addition, a set of encoders can be separately set to detect the rotation speed of the traction roller of the film 999, and then calculate its linear speed (that is, the traction speed of the film 999) according to the diameter. The data collected by the encoder is transmitted to the servo controller of the servo motor, so as to adjust the speed of the track vehicle 702, and this kind of linkage is also possible.

[0067] During implementation, a strip seat 801 is fixedly connected to the fixing seat 800. A sliding groove 802 is provided on the strip seat 801. A slider 900 is slidably installed in the sliding groove 802. A sliding hole I901 is provided on the slider 900. A guide rod 805 is installed inside the strip seat 801. The guide rod 805 slidably penetrates through the sliding hole I901. A spring I804 is provided on the guide rod 805. One end of the spring I804 abuts against one end of the slider 900; the clamp is fixedly installed on the slider 900. Among them, the function of the spring I804 is to abut the slider 900 against one end of the sliding groove 802 for easy reset.

[0068] During implementation, as Figure 5In it, one end of the guide rod 805 is provided with a threaded portion 808 and a knob 807. One end of the chute 802 is provided with a through threaded hole 806, and a circular groove 803 is opened on the inner side of the other end of the chute 802. The guide rod 805 is threadedly installed on the strip seat 801, and one end of the guide rod 805 is inserted into the circular groove 803. The guide rod 805 is convenient for disassembly and assembly, and thus the fixture can also be replaced as a whole, which is very convenient.

[0069] Embodiment 3:

[0070] As Figure 5 and Figure 6 As shown in, the fixture includes an upper clamping plate 908, a lower clamping plate 906, and a connecting seat 902 fixedly connected to the top of the slider 900. Two sliding columns 903 are fixedly connected to the connecting seat 902. Sliding holes II 905 are opened on both the upper clamping plate 908 and the lower clamping plate 906, and both the upper clamping plate 908 and the lower clamping plate 906 are slidably sleeved on the sliding columns 903. Spring II 904 is sleeved on the upper and lower parts of the two sliding columns 903. Ball sockets 910 are opened on the top of the upper clamping plate 908 and the bottom of the lower clamping plate 906. A ball 911 is movably installed in the ball socket 910, and the ball 911 can enter and roll in the clamping type guide rail 50.

[0071] Among them, the ball 911 is in the clamping type guide rail 50. The clamping type guide rail 50 defines the fixture from the upper and lower directions (that is, the upper clamping plate 908 and the lower clamping plate 906 as in Figure 7 ), and can clamp the edge of the thin film 999; then driven by the rail vehicle 702, it can not only move forward along the advancing direction of the thin film 999, but also complete lateral stretching outwards.

[0072] Specifically, elastic clamping plates 907 which are arranged in alignment are fixedly connected to the bottom of the upper clamping plate 908 and the top of the lower clamping plate 906 respectively. The elastic clamping plates 907 are made of Teflon rubber (mainly for anti-sticking and providing elasticity); slope surfaces 909 are arranged on the top of the upper clamping plate 908 and the bottom of the lower clamping plate 906. The slope surfaces 909 are convenient for further guiding, so that the upper clamping plate 908 and the lower clamping plate 906 can smoothly enter the clamping type guide rail 50.

[0073] Obviously, the embodiments described above are only a part of the embodiments of this application, rather than all of them. The preferred embodiments of this application are shown in the drawings, but they do not limit the patent scope of this application. This application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of this application more thorough and comprehensive. Although this application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure made by using the content of this application's specification and drawings, directly or indirectly applied in other related technical fields, is equally within the scope of patent protection of this application.

Claims

1. A continuous production line for PPS diaphragms used in hydrogen fuel cells, characterized in that, Including: A pre-treatment device (100), a film extruder (200), a stretching device (300), a cooling and shaping channel (400), a trimming machine (500) and a winding machine (600) arranged in the order of the production line; Among them, the stretching device (300) includes a primary longitudinal stretching mechanism (301), a transverse stretching mechanism (303) and a secondary longitudinal stretching mechanism (305). The primary longitudinal stretching mechanism (301), the transverse stretching mechanism (303) and the secondary longitudinal stretching mechanism (305) are all arranged in a semi-enclosed box body, and this box body can avoid most of the heat loss; The transverse stretching mechanism (303) is arranged in a "Z" shape. The primary longitudinal stretching mechanism (301) is fixed to the top of one end of the transverse stretching mechanism (303) through a connecting frame (306), while the secondary longitudinal stretching mechanism (305) is fixed to the bottom of the other end of the transverse stretching mechanism (303) through a connecting frame (306); The primary longitudinal stretching mechanism (301) is communicated with the transverse stretching mechanism (303) through a variable temperature channel I (302), and the secondary longitudinal stretching mechanism (305) is communicated with the transverse stretching mechanism (303) through a variable temperature channel II (304); Two sets of stretching devices (700) are arranged inside the transverse stretching mechanism (303), and the two sets of stretching devices (700) can respectively complete primary transverse stretching and secondary transverse stretching online.

2. The continuous production line of PPS diaphragm for hydrogen fuel cells according to claim 1, wherein: Each set of the stretching devices (700) includes two annular tracks (701) and multi-section track cars (702) connected end to end. The track cars (702) can move on the tracks (701). Among them, the two tracks (701) are respectively located on both sides of the film (999) to be transversely stretched, and parallel sections (703) parallel to the side edges of the film (999) are arranged on the opposite sides of the two tracks (701); A fixing seat (800) is fixedly connected to each section of the track car (702), and a clamp is slidably installed on the fixing seat (800), and the clamp can slide perpendicular to the side edge of the film (999); It also includes a pair-clamping guide rail (50) arranged above the track car (702) and fixed separately. The clamp can clamp both sides of the film (999) under the guidance of the pair-clamping guide rail (50) and driven by the track car (702) and can realize transverse stretching.

3. The continuous production line of PPS diaphragm for hydrogen fuel cells according to claim 2, wherein: It also includes a servo motor. The track car (702) is driven and controlled by the servo motor. At the same time, the traction speed of the film (999) in the transverse stretching mechanism (303) is set to be synchronized with the moving speed of the track car (702).

4. The continuous production line of PPS diaphragm for hydrogen fuel cell according to claim 3, characterized in that: A strip-shaped seat (801) is fixedly connected to the fixed seat (800). A chute (802) is formed in the strip-shaped seat (801). A slider (900) is slidably installed in the chute (802). A first sliding hole (901) is formed in the slider (900). A guide rod (805) is installed inside the strip-shaped seat (801). The guide rod (805) slidably penetrates through the first sliding hole (901). A first spring (804) is arranged on the guide rod (805). One end of the first spring (804) abuts against one end of the slider (900). The fixture is fixedly installed on the slider (900).

5. The continuous production line of PPS diaphragm for hydrogen fuel cells according to claim 4, wherein: A threaded portion (808) and a knob (807) are arranged at one end of the guide rod (805). A through threaded hole (806) is formed at one end of the chute (802). A circular groove (803) is formed inside the other end of the chute (802). The guide rod (805) is threadedly installed on the strip-shaped seat (801), and one end of the guide rod (805) is inserted into the circular groove (803).

6. The continuous production line of PPS diaphragm for hydrogen fuel cell according to claim 4, characterized in that: The fixture includes an upper clamping plate (908), a lower clamping plate (906), and a connecting seat (902) fixedly connected to the top of the slider (900). Two sliding columns (903) are fixedly connected to the connecting seat (902). Second sliding holes (905) are formed in both the upper clamping plate (908) and the lower clamping plate (906). The upper clamping plate (908) and the lower clamping plate (906) are both slidably sleeved on the sliding columns (903). Second springs (904) are sleeved on the upper and lower parts of the two sliding columns (903). Ball sockets (910) are formed at the top of the upper clamping plate (908) and the bottom of the lower clamping plate (906). A ball (911) is movably installed in the ball socket (910). The ball (911) can enter the opposed clamping guide (50) and roll inside.

7. The continuous production line of PPS diaphragm for hydrogen fuel cells according to claim 6, wherein: Elastic clamping plates (907) which are arranged in alignment are fixedly connected to the bottom of the upper clamping plate (908) and the top of the lower clamping plate (906) respectively. The elastic clamping plates (907) are made of Teflon rubber. Slope surfaces (909) are arranged at the top of the upper clamping plate (908) and the bottom of the lower clamping plate (906).

8. The continuous production line of PPS diaphragm for hydrogen fuel cell according to claim 7, characterized in that: Both ends of the opposed clamping guide (50) are provided with expansion openings (54).

9. The continuous production line of PPS diaphragm for hydrogen fuel cells according to claim 8, wherein: The opposed clamping guide (50) includes a first parallel part (51) at the head, a stretching part (52) with a smooth transition in the middle, and a last parallel part (53).

10. The continuous production line of PPS diaphragm for hydrogen fuel cells according to claim 1, characterized in that: Both the first temperature-changing channel (302) and the second temperature-changing channel (304) are vertically arranged. A plurality of groups of opposed baffles (307) are arranged on both sides inside the first temperature-changing channel (302) and the second temperature-changing channel (304). A gap for the film (999) to pass through is left between the flush baffles (307).

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