A production process for a hydrogen fuel cell stack cooling pipeline and its forming equipment

Abstract

The present invention discloses a production process and a forming device for a hydrogen fuel cell stack cooling pipeline, belonging to the technical field of pipeline production, and comprising the following steps: 1. Drilling holes; 2. Deburring; 3. Using the forming device for the hydrogen fuel cell stack cooling pipeline to perform forming processing on pipe fittings; 4. Pickling and passivation; 5. Ultrasonic cleaning. By the above method, the present invention can achieve relatively high-automation batch production; it can realize the feeding of pipe fittings and simultaneously realize the discharging process of the formed pipe fittings, eliminating the process of manually removing the formed pipe fittings or relying on other equipment, and being more efficient; the present invention can simultaneously complete the installation of the water filling end of the pipe fitting and the plugging of the other end while clamping and pressing the pipeline on the pressing die, and the equipment operates stably, which is beneficial to improving the efficiency of hydroforming.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline production, and particularly relates to a production process and a forming device for a hydrogen fuel cell stack cooling pipeline. Background Art

[0002] The hydrogen fuel cell stack cooling pipeline is an important component of a hydrogen fuel cell, and it is generally processed and formed by methods such as the grooving method or the hydroforming method. Due to advantages such as high processing speed, low energy consumption, and high working pressure, the hydroforming method is widely used.

[0003] However, at present, it is difficult to achieve high - automation batch production for the hydroforming of hydrogen fuel cell stack cooling pipelines, including the automatic clamping after the water pipe is loaded, the hydroforming process, and the unloading of the subsequent formed pipe fittings. Other equipment or even manual labor is needed to achieve these processes. There is an urgent need in the art for a production process and a forming device for hydrogen fuel cell stack cooling pipelines with a high degree of automation.

[0004] Based on this, the present invention designs a production process and a forming device for a hydrogen fuel cell stack cooling pipeline to solve the above problems. Summary of the Invention

[0005] In view of the above - mentioned drawbacks of the prior art, the present invention provides a production process and a forming device for a hydrogen fuel cell stack cooling pipeline.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0007] A production process for a hydrogen fuel cell stack cooling pipeline includes the following steps:

[0008] I. Use a laser pipe cutting machine to open holes in the pipe fittings.

[0009] II. Deburr the ends of the pipe fittings.

[0010] III. Use a forming device for a hydrogen fuel cell stack cooling pipeline to perform forming processing on the pipe fittings.

[0011] IV. Immerse the formed pipe fittings in pickling and passivation solution for 25 - 35 minutes, then take them out and drain.

[0012] V. Place the drained pipe fittings into an ultrasonic cleaning tank mixed with a cleaning agent, submerge the workpieces by 9 - 10 cm, perform ultrasonic cleaning at 80 - 85 °C for 35 - 45 minutes, then take them out and drain.

[0013] VI. Place the drained pipe fittings into an ultrasonic cleaning tank containing only deionized water, submerge the workpieces by 5 - 8 cm, perform ultrasonic cleaning at 80 - 85 °C for 32 - 60 minutes, then take them out and drain; the conductivity of the deionized water ≤ 1 μs / cm.

[0014] VII. Dry the pipe fittings, and then perform laser marking and packaging.

[0015] The present invention also discloses a hydrogen fuel cell stack cooling pipe forming device for the production process of the hydrogen fuel cell stack cooling pipeline described above, including a chassis. An annular conveying assembly for synchronously and intermittently driving a plurality of groups of lower pressing molds to move sequentially below the upper pressing mold is installed at the upper end of the chassis;

[0016] A three-channel feeding assembly for feeding multiple groups of pipe fittings in sequence is installed on one side of the chassis; the three-channel feeding assembly is connected to multiple groups of vibrating bowls;

[0017] A hydroforming assembly for hydroforming the pipe fittings on the lower pressing mold and driving the upper pressing mold to move downward to cooperate with the lower pressing mold to clamp the pipe fittings is installed at the upper end of the chassis;

[0018] A pick-and-place assembly for clamping and feeding multiple groups of pipe fittings on the three-channel feeding assembly to an empty lower pressing mold at one end and releasing and collecting multiple groups of pipe fittings after hydroforming at the other end is installed on one side of the chassis;

[0019] The pick-and-place assembly includes a moving assembly and a synchronous clamping and releasing assembly, and the moving assembly is connected to the synchronous clamping and releasing assembly;

[0020] The hydroforming assembly includes a driving structure, a synchronous contraction structure, a water injection structure, a plugging structure, and a limiting structure; the driving structure is connected to the upper pressing mold, and the driving structure is respectively connected to the water injection structure and the plugging structure through the synchronous contraction structure, and the water injection structure and the plugging structure are connected to the chassis through the limiting structure.

[0021] Further, the annular conveying assembly includes an annular guide rail, sliding blocks, support connection seats, a synchronous belt, a straight shaft, synchronous wheels, and a reduction motor; the reduction motor is fixedly installed at the inner bottom of the chassis, and the two ends of the top of the chassis are respectively rotatably installed with straight shafts, and the bottom of one of the straight shafts is fixedly connected to the output end of the reduction motor; synchronous wheels are fixedly connected to the straight shafts, and the two groups of synchronous wheels are connected by a synchronous belt in transmission, and a plurality of groups of support connection seats are fixedly connected at equal intervals on the outer wall of the synchronous belt, and sliding blocks are fixedly connected to the bottoms of the support connection seats, and an annular guide rail is fixedly connected to the top of the chassis, and the sliding blocks are slidably connected to the annular guide rail; the lower pressing mold is installed on the support connection seat.

[0022] Further, the lower pressing mold includes a mold base, a first semi-circular groove, a groove, a second semi-circular groove, and a third semi-circular groove; a plurality of forming grooves are equally spaced at the upper end of the mold base, and the forming grooves are successively connected from front to back as a second semi-circular groove, a third semi-circular groove, a groove, a third semi-circular groove, and a first semi-circular groove.

[0023] Furthermore, the three-channel feeding assembly includes a first support frame, a first horizontal plate, a first cylinder, a straight cylinder, a U-shaped material guiding groove, a lifting plate, and a fourth semi-circular groove; the bottom of the first support frame is fixedly connected to the ground or the side wall of the chassis, the top of the first support frame is fixedly connected with a straight cylinder, the upper end of the first support frame is fixedly connected with a first horizontal plate, the first horizontal plate is located below the straight cylinder, the top of the first horizontal plate is fixedly connected with a first cylinder, the output end of the first cylinder is fixedly connected with a lifting plate, several groups of fourth semi-circular grooves are opened at the upper end of the lifting plate, several groups of U-shaped material guiding grooves are fixedly connected to the side of the straight cylinder close to the vibrating disk, each group of U-shaped material guiding grooves is respectively connected to each group of vibrating disks, and the discharge ports of each group of U-shaped material guiding grooves are aligned with each group of fourth semi-circular grooves.

[0024] Furthermore, the moving assembly includes a second support frame, a second cylinder, a first guide rail assembly, a third cylinder, and a connecting frame; the bottom of the second support frame is fixedly connected to the ground or the side wall of the chassis, the upper end of the second support frame is fixedly installed with a second cylinder, the output end of the second cylinder is fixedly connected with a third cylinder, the output end of the lower end of the third cylinder is fixedly connected with a connecting frame, and the connecting frame is connected to the synchronous clamping and releasing assembly; the third cylinder is limitedly connected to the second support frame through the first guide rail assembly.

[0025] Furthermore, the synchronous clamping and releasing assembly includes a first inclined groove, a movable plate, a horizontal sliding groove, a clamping plate, a clamping plate connecting plate, a fourth cylinder, an I-shaped plate, and a push rod; the lower end of the connecting frame is fixedly connected to the movable plate; several groups of horizontal sliding grooves are respectively opened at the front and rear ends of the left and right parts of the movable plate, the fourth cylinder is fixedly installed on the top of the movable plate, the output end of the fourth cylinder is fixedly connected with an I-shaped plate, push rods are respectively fixedly connected to the lower ends of the four corners of the I-shaped plate, the lower ends of the push rods are respectively slidably connected to the inside of the first inclined groove, first inclined grooves are respectively opened at one ends of the four groups of clamping plate connecting plates close to the push rods, and several groups of clamping plates slidably connected to the horizontal sliding grooves are respectively fixedly connected to the other ends of the bottom of the clamping plate connecting plates; the two groups of clamping plate connecting plates on the left side and the two groups of clamping plate connecting plates on the right side are symmetric left and right.

[0026] Furthermore, the driving structure includes a fifth cylinder, a guide rod, a connecting movable plate, and a third support frame; the third support frame is fixedly installed on the top of the chassis, the top of the third support frame is fixedly connected with a fifth cylinder, the output end of the fifth cylinder is fixedly connected with a connecting movable plate, an upper pressing die is fixedly connected to the bottom of the connecting movable plate, guide rods are respectively fixedly connected to the two ends of the top of the connecting movable plate, and the guide rods are slidably connected to the third support frame.

[0027] Furthermore, the synchronous contraction structure includes a second inclined groove, an inclined plate, a second sliding rod, and a support; inclined plates are fixedly connected to the four corners at the front and rear ends of the connecting movable plate respectively. A second inclined groove is formed inside the inclined plate, and second sliding rods are slidably connected inside the second inclined groove. The second sliding rods are fixedly connected to the upper ends of the supports respectively. The two groups of supports on the front side are connected to the plugging structure, and the two groups of supports on the rear side are connected to the water injection structure.

[0028] Furthermore, the plugging structure includes an outer plugging column, an inner plugging column, and an outer plugging column mounting plate; the two groups of supports on the front side are fixedly connected to the top of the outer plugging column mounting plate. Several groups of outer plugging columns are fixedly connected to one end of the outer plugging column mounting plate close to the water injection structure. The other end of the outer plugging column is fixedly connected to an inner plugging column for plugging one end of the pipeline; the outer plugging column is inserted and matched with the second semi-circular groove of the lower pressing die;

[0029] The water injection structure includes a water injection pipe, a plugging water inlet pipe, and a plugging water inlet pipe mounting plate; the two groups of supports on the rear side are fixedly connected to the top of the plugging water inlet pipe mounting plate; several groups of plugging water inlet pipes are fixedly connected to one end of the plugging water inlet pipe mounting plate close to the plugging structure. The other end of the plugging water inlet pipe is fixedly connected to a water injection pipe for inserting and entering water at the other end of the pipeline; the plugging water inlet pipe is inserted and matched with the first semi-circular groove of the lower pressing die; the bottoms of the plugging water inlet pipe mounting plate and the outer plugging column mounting plate are connected to the chassis through a limiting structure. Beneficial effects

[0030] In the present invention, a multi-channel feeding component feeds multiple groups of pipe fittings in sequence. One end of the picking and placing component clamps and feeds the multiple groups of pipe fittings on the multi-channel feeding component onto an empty lower pressing die, and the other end of the picking and placing component releases the multiple groups of pipe fittings after hydroforming to achieve collection; the annular conveying component synchronously and intermittently drives several groups of lower pressing dies to move sequentially below the upper pressing die. The driving structure of the hydroforming component drives the upper pressing die to move downward to cooperate with the lower pressing die to clamp the pipe fittings. At the same time, the driving structure of the hydroforming component drives the synchronous contraction structure to contract. The synchronous contraction structure drives the water injection structure and the plugging structure to move towards each other under the limiting action of the limiting structure respectively, and are respectively connected to both ends of the pipe fittings on the lower pressing die. The plugging structure plugs one end of the lower pressing die, and the water injection structure can inject water into the lower pressing die, thereby realizing hydroforming of multiple groups of pipe fittings simultaneously.

[0031] The present invention can achieve high automation and batch production; it can realize the process of feeding pipe fittings and simultaneously discharging the formed pipe fittings, eliminating the process of manually or with the help of other equipment to take out the formed pipe fittings, which is more efficient; the present invention can realize clamping the pipeline on the lower pressing die and simultaneously completing the installation of the water filling end of the pipe fitting and plugging the other end, and the equipment runs stably, which is beneficial to improving the efficiency of hydroforming. Brief Description of the Drawings

[0032] 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.

[0033] Figure 1 Three-dimensional view of the main structure of a hydrogen fuel cell stack cooling pipe forming device of the present invention Figure 1 ;

[0034] Figure 2 Front view of the structure of a hydrogen fuel cell stack cooling pipe forming device of the present invention;

[0035] Figure 3 Left view of the structure of a hydrogen fuel cell stack cooling pipe forming device of the present invention;

[0036] Figure 4 Three-dimensional view of the main structure of a hydrogen fuel cell stack cooling pipe forming device of the present invention Figure 2 ;

[0037] Figure 5 Three-dimensional view of the main structure of a hydrogen fuel cell stack cooling pipe forming device of the present invention Figure 3 ;

[0038] Figure 6 Schematic diagram of the structure of the three-channel feeding assembly in a hydrogen fuel cell stack cooling pipe forming device of the present invention;

[0039] Figure 7 Schematic diagram of the structure of the picking and placing assembly in a hydrogen fuel cell stack cooling pipe forming device of the present invention;

[0040] Figure 8 Schematic diagram of the structure of the hydroforming assembly in a hydrogen fuel cell stack cooling pipe forming device of the present invention;

[0041] Figure 9 Schematic diagram of the structure of the lower pressing die in a hydrogen fuel cell stack cooling pipe forming device of the present invention;

[0042] Figure 10 Is the sectional view along the Figure 2 A-A direction;

[0043] Figure 11 Is Figure 7 The enlarged view at B in;

[0044] The reference numerals in the figure respectively represent:

[0045] 1. Chassis; 2. Three-channel feeding assembly; 21. First support frame; 22. First horizontal plate; 23. First cylinder; 24. Straight tube; 25. U-shaped material guiding groove; 26. Lifting plate; 27. Fourth semi-circular groove; 3. Pick-and-place component; 31. Second support frame; 32. Second cylinder; 33. First guide rail assembly; 34. Third cylinder; 35. Connecting frame; 36. First inclined groove; 37. Movable plate; 38. Horizontal sliding groove; 39. Clamping plate; 310. Clamping plate connecting plate; 311. Fourth cylinder; 312. I-shaped plate; 313. Push rod; 4. Ring-shaped conveying assembly; 41. Ring-shaped guide rail; 42. Sliding block; 43. Support connecting seat; 44. Synchronous belt; 45. Straight shaft; 46. Synchronous pulley; 47. Reduction motor; 5. Upper pressing die; 6. Lower pressing die; 61. Die base; 62. First semi-circular groove; 63. Groove; 64. Second semi-circular groove; 65. Third semi-circular groove; 7. Hydroforming assembly; 71. Fifth cylinder; 72. Water injection pipe; 73. Guide rod; 74. Connecting movable plate; 75. Third support frame; 76. Outer plugging column; 77. Second guide rail assembly; 78. Plugging water inlet pipe; 79. Plugging water inlet pipe mounting plate; 710. Second sliding rod; 711. Second inclined groove; 712. Inclined plate; 713. Third guide rail assembly; 714. Inner plugging column; 715. Outer plugging column mounting plate; 716. Support. Embodiment

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0047] The present invention will be further described below with reference to the embodiments. Embodiment

[0048] This embodiment discloses a production process for a hydrogen fuel cell stack cooling pipeline, including the following steps:

[0049] I. Use a laser pipe cutting machine to punch holes in the pipe fittings.

[0050] II. Deburr the ends of the pipe fittings.

[0051] III. Use a hydrogen fuel cell stack cooling pipeline forming device to perform forming processing on the pipe fittings.

[0052] IV. Immerse the formed pipe fittings in pickling and passivation solution for 25 minutes, then take them out and drain.

[0053] V. Put the drained pipe fittings into an ultrasonic cleaning tank mixed with cleaning agent, submerging the workpiece by 9 cm, and perform ultrasonic cleaning at 85 °C for 35 min, then take them out and drain.

[0054] VI. Put the drained pipe fittings into an ultrasonic cleaning tank containing only deionized water, submerging the workpiece by 5 cm, and perform ultrasonic cleaning at 85 °C for 32 min, then take them out and drain; the conductivity of the deionized water ≤ 1 μs / cm.

[0055] Preferably, the outlet of the ultrasonic cleaning tank in Step VI is equipped with a conductivity detector. When the conductivity value at the liquid outlet is less than 5 μs, the parts can be taken out.

[0056] VII. Dry the pipe fittings, and then perform laser marking and packaging. Example

[0057] This example discloses a production process for a hydrogen fuel cell stack cooling pipeline, including the following steps:

[0058] I. Use a laser pipe cutting machine to open holes in the pipe fittings.

[0059] II. Deburr the ends of the pipe fittings.

[0060] III. Use a hydrogen fuel cell stack cooling pipeline forming device to perform forming processing on the pipe fittings.

[0061] IV. Immerse the formed pipe fittings in pickling and passivation solution for 35 min, then take them out and drain.

[0062] V. Put the drained pipe fittings into an ultrasonic cleaning tank mixed with cleaning agent, submerging the workpiece by 10 cm, and perform ultrasonic cleaning at 80 °C for 45 min, then take them out and drain.

[0063] VI. Put the drained pipe fittings into an ultrasonic cleaning tank containing only deionized water, submerging the workpiece by 8 cm, and perform ultrasonic cleaning at 80 °C for 60 min, then take them out and drain; the conductivity of the deionized water ≤ 1 μs / cm.

[0064] Preferably, the outlet of the ultrasonic cleaning tank in Step VI is equipped with a conductivity detector. When the conductivity value at the liquid outlet is less than 5 μs, the parts can be taken out.

[0065] VII. Dry the pipe fittings, and then perform laser marking and packaging. Example

[0066] This example discloses a production process for a hydrogen fuel cell stack cooling pipeline, including the following steps:

[0067] I. Use a laser pipe cutting machine to open holes in the pipe fittings.

[0068] II. Deburr the ends of the pipe fittings.

[0069] III. Use a hydrogen fuel cell cooling pipe forming device to form pipe fittings;

[0070] IV. Immerse the formed pipe fittings in pickling and passivation solution for 30 minutes, then take them out and drain;

[0071] V. Place the drained pipe fittings into an ultrasonic cleaning tank mixed with cleaning agent, submerge the workpieces by 9.5 cm, perform ultrasonic cleaning at 82 °C for 40 minutes, then take them out and drain;

[0072] VI. Place the drained pipe fittings into an ultrasonic cleaning tank containing only deionized water, submerge the workpieces by 7 cm, perform ultrasonic cleaning at 82 °C for 40 minutes, then take them out and drain; the conductivity of deionized water ≤ 1 μs / cm;

[0073] Preferably, a conductivity detector is installed at the outlet of the ultrasonic cleaning tank in step VI. When the conductivity value at the liquid outlet is less than 5 μs, the parts can be taken out;

[0074] VII. Dry the pipe fittings, and then perform laser marking and packaging. Example

[0075] Please refer to the attached Figures 1-11 to a hydrogen fuel cell cooling pipe forming device used in the above production process, which includes a chassis 1. An annular conveying component 4 for synchronously and intermittently driving a plurality of groups of lower pressing dies 6 to move to the lower part of the upper pressing die 5 in sequence is installed at the upper end of the chassis 1;

[0076] A three-channel feeding component 2 for feeding multiple groups of pipe fittings in sequence is installed on one side of the chassis 1; the three-channel feeding component 2 is connected to multiple groups of vibrating bowls;

[0077] A hydroforming component 7 for hydroforming the pipe fittings on the lower pressing die 6 and driving the upper pressing die 5 to move downward to cooperate with the lower pressing die 6 to clamp the pipe fittings is installed at the upper end of the chassis 1;

[0078] A picking and placing component 3 for clamping and feeding multiple groups of pipe fittings on the three-channel feeding component 2 to the empty lower pressing die 6 at one end and releasing the hydroformed multiple groups of pipe fittings at the other end for collection is installed on one side of the chassis 1;

[0079] The picking and placing component 3 includes a moving component and a synchronous clamping and releasing component, and the moving component is connected to the synchronous clamping and releasing component;

[0080] The hydroforming component 7 includes a driving structure, a synchronous contraction structure, a water injection structure, a plugging structure, and a limiting structure; the driving structure is connected to the upper pressing die 5, and the driving structure is respectively connected to the water injection structure and the plugging structure through the synchronous contraction structure, and the water injection structure and the plugging structure are connected to the chassis 1 through the limiting structure;

[0081] The present invention sequentially feeds multiple groups of pipe fittings through a three-channel feeding component 2, and clamps and feeds multiple groups of pipe fittings on the three-channel feeding component 2 to an empty lower pressing mold 6 through one end of a material taking and discharging component 3, and releases multiple groups of pipe fittings after water expansion molding through the other end of the material taking and discharging component 3 to realize collection; synchronously and intermittently drives multiple groups of lower pressing molds 6 to move to the bottom of the upper pressing mold 5 in sequence through an annular conveying component 4, drives the upper pressing mold 5 to move downward through a driving structure of a water expansion component 7 to cooperate with the lower pressing mold 6 to press the pipe fittings, and at the same time drives the synchronous contraction structure to contract through the driving structure of the water expansion component 7, and the synchronous contraction structure drives the water injection structure and the sealing structure to move toward each other under the limiting action of the limiting structure, and are respectively connected to the two ends of the pipe fittings on the lower pressing mold 6, and the sealing structure blocks one end of the lower pressing mold 6, and the water injection structure can inject water into the lower pressing mold 6, thereby realizing simultaneous water expansion molding of multiple groups of pipe fittings;

[0082] The annular conveying assembly 4 includes an annular guide rail 41, a sliding block 42, a support connection seat 43, a synchronous belt 44, a straight shaft 45, a synchronous wheel 46 and a reduction motor 47; the reduction motor 47 is fixedly installed on the inner bottom of the chassis 1, and the two ends of the top of the chassis 1 are rotatably installed with straight shafts 45, and the bottom of one of the straight shafts 45 is fixedly connected to the output end of the reduction motor 47; the straight shafts 45 are fixedly connected with synchronous wheels 46, and the two groups of synchronous wheels 46 are connected by a synchronous belt 44. A plurality of groups of support connection seats 43 are fixedly connected to the outer wall of the synchronous belt 44 at equal intervals, and the bottoms of the support connection seats 43 are fixedly connected with sliding blocks 42. The top of the chassis 1 is fixedly connected with an annular guide rail 41, and the sliding block 42 is slidably connected to the annular guide rail 41; the support connection seat 43 is installed with a lower clamping mold 6;

[0083] The direct shaft 45 is driven to rotate by the reduction motor 47, and the direct shaft 45 drives the synchronous wheel 46 to rotate. The synchronous wheel 46 drives another set of synchronous wheels 46 to rotate through the synchronous belt 44. The synchronous belt 44 drives the support connection seat 43 to rotate, and the support connection seat 43 drives the sliding block 42 to slide along the annular guide rail 41. Under the restriction of the sliding block 42 and the annular guide rail 41, the support connection seat 43 drives the lower pressing mold 6 to move stably with equal spacing;

[0084] The lower pressing mold 6 includes a mold base 61, a first semicircular groove 62, a groove 63, a second semicircular groove 64 and a third semicircular groove 65; a plurality of molding grooves are evenly spaced at the upper end of the mold base 61, and the molding grooves are connected from front to back, namely, the second semicircular groove 64, the third semicircular groove 65, the groove 63, the third semicircular groove 65 and the first semicircular groove 62;

[0085] The outer diameters of the second semicircular groove 64 and the first semicircular groove 62 are smaller than the outer diameter of the third semicircular groove 65;

[0086] The second semi-circular groove 64 and the first semi-circular groove 62 are respectively used for connecting with the water injection structure and the plugging structure; the third semi-circular groove 65 is used for embedding and connecting the pipeline; the groove 63 is used for hydroforming after water injection.

[0087] The three-channel feeding assembly 2 includes a first support frame 21, a first cross plate 22, a first cylinder 23, a straight cylinder 24, a U-shaped material guiding groove 25, a jacking plate 26 and a fourth semi-circular groove 27; the bottom of the first support frame 21 is fixedly connected to the ground or the side wall of the chassis 1, the top of the first support frame 21 is fixedly connected with a straight cylinder 24, the upper end of the first support frame 21 is fixedly connected with a first cross plate 22, the first cross plate 22 is located below the straight cylinder 24, the top of the first cross plate 22 is fixedly connected with a first cylinder 23, the output end of the first cylinder 23 is fixedly connected with a jacking plate 26, the jacking plate 26 is slidably connected in the straight cylinder 24, a plurality of groups of fourth semi-circular grooves 27 are opened at the upper end of the jacking plate 26, and a plurality of groups of U-shaped material guiding grooves 25 are fixedly connected to one side of the straight cylinder 24 close to the vibrating disk, each group of U-shaped material guiding grooves 25 is respectively connected with each group of vibrating disks, and the discharge ports of each group of U-shaped material guiding grooves 25 are aligned with each group of fourth semi-circular grooves 27.

[0088] The pipe fittings are fed into each group of U-shaped material guiding grooves 25 through a plurality of vibrating disks, and then the pipe fittings are conveyed into each group of fourth semi-circular grooves 27 through each group of U-shaped material guiding grooves 25; if the pipe fittings are in the fourth semi-circular grooves 27, it is not easy for the picking and placing assembly 3 to clamp and take out the pipe fittings from the fourth semi-circular grooves 27. Therefore, by starting the first cylinder 23 to drive the jacking plate 26 to move upward to jack up the pipe fittings, it helps the picking and placing assembly 3 to clamp a plurality of groups of pipe fittings.

[0089] The moving assembly includes a second support frame 31, a second cylinder 32, a first guide rail assembly 33, a third cylinder 34 and a connecting frame 35; the bottom of the second support frame 31 is fixedly connected to the ground or the side wall of the chassis 1, the upper end of the second support frame 31 is fixedly installed with a second cylinder 32, the output end of the second cylinder 32 is fixedly connected with a third cylinder 34, the output end of the lower end of the third cylinder 34 is fixedly connected with a connecting frame 35, and the connecting frame 35 is connected with the synchronous clamping and releasing assembly; the third cylinder 34 is limitedly connected to the second support frame 31 through the first guide rail assembly 33.

[0090] Preferably, the first guide rail assembly 33 can adopt a connection method of a guide rail and a slider.

[0091] The synchronous clamping and releasing assembly includes a first inclined groove 36, a movable plate 37, a horizontal sliding groove 38, clamping plates 39, clamping plate connecting plates 310, a fourth cylinder 311, an I-shaped plate 312, and a push rod 313; the lower end of the connecting frame 35 is fixedly connected to the movable plate 37; several groups of horizontal sliding grooves 38 are respectively formed at the front and rear ends of the left and right parts of the movable plate 37. The fourth cylinder 311 is fixedly installed on the top of the movable plate 37. An I-shaped plate 312 is fixedly connected to the output end of the fourth cylinder 311. Push rods 313 are respectively fixedly connected to the lower ends of the four corners of the I-shaped plate 312. The lower ends of the push rods 313 are respectively slidably connected inside the first inclined groove 36. First inclined grooves 36 are respectively formed at one ends of the four groups of clamping plate connecting plates 310 close to the push rods 313. Clamping plates 39 slidably connected to the horizontal sliding grooves 38 are respectively fixedly connected to the other ends of the bottom of the clamping plate connecting plates 310; the two groups of clamping plate connecting plates 310 on the left side and the two groups of clamping plate connecting plates 310 on the right side are symmetric about the left and right;

[0092] The distance between the first inclined grooves 36 of the two groups of clamping plate connecting plates 310 on the left side gradually increases from left to right;

[0093] For example, by starting the fourth cylinder 311 to drive the I-shaped plate 312 to move to the right, the push rods 313 on the right side of the I-shaped plate 312 push the two groups of clamping plate connecting plates 310 on the right side to open through the first inclined groove 36. The two groups of clamping plate connecting plates 310 on the right side drive the horizontal sliding grooves 38 on the front and rear sides to open, and the formed pipe fittings are released; at the same time, the push rods 313 on the left side of the I-shaped plate 312 push the two groups of clamping plate connecting plates 310 on the left side to open through the first inclined groove 36. The two groups of clamping plate connecting plates 310 on the left side drive the horizontal sliding grooves 38 on the front and rear sides to clamp, and the pipe fittings in the fourth semi-circular groove 27 are clamped; by starting the second cylinder 32 and the third cylinder 34 to drive the pipe fittings to move above the lower pressing die 6, and then starting the fourth cylinder 311 to drive the I-shaped plate 312 to move to the left, the horizontal sliding groove 38 on the left side releases the pipe fittings, realizing the feeding of the lower pressing die 6, and the horizontal sliding groove 38 on the right side clamps the formed pipe fittings, realizing the discharging of the formed pipe fittings;

[0094] The present invention can realize the feeding of pipe fittings while synchronously realizing the discharging process of the formed pipe fittings, eliminating the process of manually or with the help of other equipment to take out the formed pipe fittings, which is more efficient;

[0095] The driving structure includes a fifth cylinder 71, a guide rod 73, a connecting movable plate 74, and a third support frame 75; the third support frame 75 is fixedly installed on the top of the chassis 1. A fifth cylinder 71 is fixedly connected to the top of the third support frame 75. A connecting movable plate 74 is fixedly connected to the output end of the fifth cylinder 71. An upper pressing die 5 is fixedly connected to the bottom of the connecting movable plate 74. Guide rods 73 are respectively fixedly connected to both ends of the top of the connecting movable plate 74. The guide rods 73 are slidably connected to the third support frame 75;

[0096] The synchronous contraction structure includes a second inclined groove 711, an inclined plate 712, a second sliding rod 710, and a support 716; the front and rear ends of the connecting movable plate 74 are respectively fixedly connected with inclined plates 712 at the four corners. The inside of the inclined plate 712 is provided with a second inclined groove 711. The inside of the second inclined groove 711 is slidably connected with second sliding rods 710. The second sliding rods 710 are respectively fixedly connected to the upper ends of the supports 716. The two groups of supports 716 on the front side are connected to the plugging structure, and the two groups of supports 716 on the rear side are connected to the water injection structure;

[0097] The distance between the 711 of the 712 on the front and rear sides gradually increases from top to bottom;

[0098] The plugging structure includes an outer plugging column 76, an inner plugging column 714, and an outer plugging column mounting plate 715; the two groups of supports 716 on the front side are fixedly connected to the top of the outer plugging column mounting plate 715. One end of the outer plugging column mounting plate 715 close to the water injection structure is fixedly connected with a number of outer plugging columns 76. The other end of the outer plugging column 76 is fixedly connected with an inner plugging column 714 for plugging one end of the pipeline; the outer plugging column 76 is inserted and matched with the second semi-circular groove 64 of the lower pressing die 6;

[0099] The water injection structure includes a water injection pipe 72, a plugging water inlet pipe 78, and a plugging water inlet pipe mounting plate 79; the two groups of supports 716 on the rear side are fixedly connected to the top of the plugging water inlet pipe mounting plate 79; one end of the plugging water inlet pipe mounting plate 79 close to the plugging structure is fixedly connected with a number of plugging water inlet pipes 78. The other end of the plugging water inlet pipe 78 is fixedly connected with a water injection pipe 72 for inserting and entering water at the other end of the pipeline; the plugging water inlet pipe 78 is inserted and matched with the first semi-circular groove 62 of the lower pressing die 6;

[0100] Preferably, the lengths of the water injection pipe 72 and the inner plugging column 714 are the same as the length of the third semi-circular groove 65;

[0101] The bottom of the plugging water inlet pipe mounting plate 79 and the outer plugging column mounting plate 715 are connected to the chassis 1 through a limiting structure;

[0102] Preferably, the two ends of the bottom of the plugging water inlet pipe mounting plate 79 are respectively connected to the chassis 1 through a second guide rail assembly 77; the two ends of the bottom of the outer plugging column mounting plate 715 are respectively connected to the chassis 1 through a third guide rail assembly 713;

[0103] Preferably, both the second guide rail assembly and the third guide rail assembly adopt the connection method of a slide rail and a slider;

[0104] Driven by the fifth cylinder 71, the connecting movable plate 74 moves vertically downward under the restriction of the guide rod 73. While the connecting movable plate 74 drives the upper pressing die 5 to move downward to clamp the pipe fitting with the lower pressing die 6, the connecting movable plate 74 drives the inclined plate 712 to move downward. The inclined plate 712 drives the sealing structures and water injection structures on both sides to move stably towards each other under the limiting action of the limiting structure through the second sliding rod 710 and the support 716. The inner sealing column 714 is inserted into one end of the pipe fitting to block the pipe fitting, the outer sealing column 76 is inserted into the second semi-circular groove 64, the water injection pipe 72 is inserted into the other end of the pipe fitting, and the sealing water inlet pipe 78 is inserted into the first semi-circular groove 62. Since the lengths of the water injection pipe 72 and the inner sealing column 714 are the same as the length of the third semi-circular groove 65, water filling is carried out at this time. Water enters the water injection pipe 72 through the sealing water inlet pipe 78 and then enters the pipe fitting, and water expansion forming can be realized in cooperation with the groove 63;

[0105] The present invention can realize the installation of the water filling end of the pipe fitting and the sealing of the other end synchronously while clamping the pipe on the lower pressing die 6, and at the same time, the equipment runs stably, which is beneficial to improving the efficiency of water expansion forming.

[0106] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydrogen fuel cell stack cooling pipeline molding device, comprising a chassis (1), characterized in that: The upper end of the chassis (1) is provided with an annular conveying assembly (4) for synchronously and intermittently driving a plurality of groups of lower pressing dies (6) to move sequentially to the bottom of the upper pressing dies (5); A three-channel material feeding assembly (2) for sequentially feeding multiple groups of pipe fittings is installed on one side of the chassis (1); the three-channel material feeding assembly (2) is connected to multiple groups of vibration plates; The upper end of the chassis (1) is provided with a water expansion assembly (7) for water expansion forming the pipe fitting on the lower pressing mold (6) and driving the upper pressing mold (5) to move downward to cooperate with the lower pressing mold (6) to press the pipe fitting; A material taking and placing component (3) is installed on one side of the chassis (1) for clamping and feeding multiple groups of pipe fittings on the three-channel feeding component (2) onto an empty lower pressing mold (6) at one end, and releasing the multiple groups of pipe fittings after water expansion molding at the other end for collection; The material picking and placing assembly (3) comprises a moving assembly and a synchronous clamping and releasing assembly, and the moving assembly is connected to the synchronous clamping and releasing assembly; The water expansion assembly (7) comprises a driving structure, a synchronous contraction structure, a water injection structure, a blocking structure and a limiting structure; the driving structure is connected to the upper pressing mold (5), the driving structure is respectively connected to the water injection structure and the blocking structure via the synchronous contraction structure, and the water injection structure and the blocking structure are connected to the chassis (1) via the limiting structure.

2. The hydrogen fuel cell stack cooling pipeline forming device according to claim 1, characterized in that The annular conveying assembly (4) comprises an annular guide rail (41), a sliding block (42), a support connection seat (43), a synchronous belt (44), a straight shaft (45), a synchronous wheel (46) and a reduction motor (47); the reduction motor (47) is fixedly mounted on the inner bottom of the chassis (1); the straight shafts (45) are rotatably mounted at both ends of the top of the chassis (1); the bottom of one of the straight shafts (45) is fixedly connected to the output end of the reduction motor (47); the straight shafts (45) are fixedly connected to the synchronous wheels (46); the two sets of synchronous wheels (46) are connected by a synchronous belt (44); a plurality of sets of support connection seats (43) are fixedly connected to the outer wall of the synchronous belt (44) at equal intervals; the bottoms of the support connection seats (43) are fixedly connected to the sliding blocks (42); the top of the chassis (1) is fixedly connected to the annular guide rail (41); the sliding block (42) is slidably connected to the annular guide rail (41); and a lower pressing mold (6) is mounted on the support connection seat (43).

3. The hydrogen fuel cell stack cooling pipeline forming device according to claim 1, characterized in that, The lower pressing mold (6) comprises a mold base (61), a first semicircular groove (62), a concave groove (63), a second semicircular groove (64) and a third semicircular groove (65); a plurality of molding grooves are formed at equal intervals on the upper end of the mold base (61), and the molding grooves are connected from front to back and are a second semicircular groove (64), a third semicircular groove (65), a concave groove (63), a third semicircular groove (65) and a first semicircular groove (62).

4. The hydrogen fuel cell stack cooling pipeline forming device according to claim 1, wherein, The three-channel feeding component (2) includes a first support frame (21), a first horizontal plate (22), a first cylinder (23), a straight cylinder (24), a U-shaped material guiding groove (25), a jacking plate (26), and a fourth semi-circular groove (27); the bottom of the first support frame (21) is fixedly connected to the ground or the side wall of the chassis (1), the top of the first support frame (21) is fixedly connected with a straight cylinder (24), the upper end of the first support frame (21) is fixedly connected with a first horizontal plate (22), the first horizontal plate (22) is located below the straight cylinder (24), the top of the first horizontal plate (22) is fixedly connected with a first cylinder (23), the output end of the first cylinder (23) is fixedly connected with a jacking plate (26), several groups of fourth semi-circular grooves (27) are opened at the upper end of the jacking plate (26), several groups of U-shaped material guiding grooves (25) are fixedly connected to the side of the straight cylinder (24) close to the vibrating plate, each group of U-shaped material guiding grooves (25) is respectively connected to each group of vibrating plates, and the discharge ports of each group of U-shaped material guiding grooves (25) are aligned with each group of fourth semi-circular grooves (27).

5. The hydrogen fuel cell stack cooling pipeline forming equipment according to claim 1, wherein The moving component includes a second support frame (31), a second cylinder (32), a first guide rail assembly (33), a third cylinder (34), and a connecting frame (35); the bottom of the second support frame (31) is fixedly connected to the ground or the side wall of the chassis (1), the upper end of the second support frame (31) is fixedly installed with a second cylinder (32), the output end of the second cylinder (32) is fixedly connected with a third cylinder (34), the output end of the lower end of the third cylinder (34) is fixedly connected with a connecting frame (35), and the connecting frame (35) is connected to the synchronous clamping and releasing component; the third cylinder (34) is limitedly connected to the second support frame (31) through the first guide rail assembly (33).

6. The hydrogen fuel cell stack cooling pipeline forming device according to claim 5, characterized in that, The synchronous clamping and releasing component includes a first inclined groove (36), a movable plate (37), a horizontal sliding groove (38), a clamping plate (39), a clamping plate connecting plate (310), a fourth cylinder (311), an I-shaped plate (312), and a push rod (313); the lower end of the connecting frame (35) is fixedly connected to the movable plate (37); several groups of horizontal sliding grooves (38) are respectively opened at the front and rear ends of the left and right parts of the movable plate (37), the fourth cylinder (311) is fixedly installed on the top of the movable plate (37), the output end of the fourth cylinder (311) is fixedly connected with an I-shaped plate (312), push rods (313) are respectively fixedly connected to the lower ends of the four corners of the I-shaped plate (312), the lower ends of the push rods (313) are respectively slidably connected to the inside of the first inclined groove (36), first inclined grooves (36) are respectively opened at one ends of the four groups of clamping plate connecting plates (310) close to the push rods (313), and several groups of clamping plates (39) slidably connected to the horizontal sliding grooves (38) are respectively fixedly connected to the bottom of the other ends of the clamping plate connecting plates (310); the two groups of clamping plate connecting plates (310) on the left side and the two groups of clamping plate connecting plates (310) on the right side are symmetric left and right.

7. The hydrogen fuel cell stack cooling pipeline forming device according to claim 1, wherein The driving structure includes a fifth cylinder (71), a guide rod (73), a connecting movable plate (74), and a third support frame (75); the third support frame (75) is fixedly installed on the top of the chassis (1), the top of the third support frame (75) is fixedly connected to the fifth cylinder (71), the output end of the fifth cylinder (71) is fixedly connected to the connecting movable plate (74), the bottom of the connecting movable plate (74) is fixedly connected to the upper pressing die (5), both ends of the top of the connecting movable plate (74) are respectively fixedly connected to the guide rod (73), and the guide rod (73) is slidably connected to the third support frame (75).

8. The hydrogen fuel cell stack cooling pipeline forming device according to claim 3, characterized in that, The synchronous contraction structure includes a second inclined groove (711), an inclined plate (712), a second sliding rod (710), and a support (716); inclined plates (712) are respectively fixedly connected to four corners at the front and rear ends of the connecting movable plate (74), a second inclined groove (711) is formed inside the inclined plate (712), a second sliding rod (710) is slidably connected inside each second inclined groove (711), the second sliding rods (710) are respectively fixedly connected to the upper ends of the supports (716), the two groups of supports (716) on the front side are connected to the plugging structure, and the two groups of supports (716) on the rear side are connected to the water injection structure.

9. The hydrogen fuel cell stack cooling pipeline forming device according to claim 8, characterized in that The plugging structure includes an outer plugging column (76), an inner plugging column (714), and an outer plugging column mounting plate (715); the two groups of supports (716) on the front side are fixedly connected to the top of the outer plugging column mounting plate (715), several groups of outer plugging columns (76) are fixedly connected to one end of the outer plugging column mounting plate (715) close to the water injection structure, and the other end of the outer plugging column (76) is fixedly connected to an inner plugging column (714) for plugging one end of the pipeline; the outer plugging column (76) is inserted and matched with the second semi-circular groove (64) of the lower pressing die (6). The water injection structure includes a water injection pipe (72), a plugging water inlet pipe (78), and a plugging water inlet pipe mounting plate (79); the two groups of supports (716) on the rear side are fixedly connected to the top of the plugging water inlet pipe mounting plate (79); several groups of plugging water inlet pipes (78) are fixedly connected to one end of the plugging water inlet pipe mounting plate (79) close to the plugging structure, and the other end of the plugging water inlet pipe (78) is fixedly connected to a water injection pipe (72) for inserting and supplying water to the other end of the pipeline; the plugging water inlet pipe (78) is inserted and matched with the first semi-circular groove (62) of the lower pressing die (6); the bottoms of the plugging water inlet pipe mounting plate (79) and the outer plugging column mounting plate (715) are connected to the chassis (1) through a limiting structure.

Images