Automatic production line for injection molding, welding and detection of new energy hydrogen storage liner

Abstract

The invention relates to the technical field of hydrogen storage part production equipment, and provides a new energy hydrogen storage inner container injection molding welding detection automatic production line which comprises an injection molding station, a material handle removing station, a conveying station, an infrared welding station, a cutting station, a welding seam detection station and an air tightness detection station. According to the infrared welding station, a first welding clamp and a second welding clamp are movably arranged on a welding machine table, half liners are clamped on the first welding clamp and the second welding clamp, a shaping cutter is movably arranged on the welding machine table, and roundness detection units are arranged on the first welding clamp and the second welding clamp. The infrared heating unit is arranged between the first welding clamp and the second welding clamp, and the first welding clamp and the second welding clamp can rotate synchronously. By means of the technical scheme, the problem that in the prior art, the cutting quality of the inner container is unqualified easily due to the hydrogen storage tank inner container production line welding and cutting technology is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage component production equipment, and in particular to an automatic production line for injection molding, welding and detection of new energy hydrogen storage tanks. Background Art

[0002] Hydrogen-powered vehicles are gradually becoming the development trend of future vehicles due to their zero-emission characteristics, and hydrogen storage bottles used to store high-pressure hydrogen have also become one of the essential key components, and even restricted the development of domestic hydrogen-powered vehicles. The current hydrogen storage tanks use plastic liner solutions. The production process of plastic liner adopts injection molding and welding processes.

[0003] The liner production line in the prior art mostly adopts injection molding to obtain a semi-liner component, and then butt-welds it on welding equipment to form a complete liner. At the same time, cutting and shaping the weld are performed on the welding station. However, there is a problem with the above production process. That is, the liner that has just been welded is directly cut and shaped, and the stress caused by welding has not been eliminated. If the stress is directly cut, when the stress decreases or eliminates with the temperature, the liner cutting transition is likely to occur, causing quality problems. Based on the above problems, a new liner production line is needed to solve the above problems. Summary of the invention

[0004] The present invention proposes an automatic production line for injection molding, welding and inspection of new energy hydrogen storage tank liner, which solves the problem in the prior art that the welding and cutting processes of the hydrogen storage tank liner production line easily lead to unqualified liner cutting quality.

[0005] The technical solution of the present invention is as follows: An automatic production line for injection molding, welding and detection of a new energy hydrogen storage liner, the production line comprises an injection molding station, a material removal station, a conveying station, an infrared welding station, a cutting station, a weld detection station and an airtight detection station which are arranged in sequence, the production line also comprises a plurality of six-axis manipulators, the six-axis manipulators are used to shear and transport the liner, wherein the infrared welding station is located before the cutting station, the infrared welding station comprises a welding machine, a first welding fixture, a second welding fixture, an infrared heating unit and a shaping knife, wherein the first welding fixture and the second welding fixture are both movably arranged on the welding machine and can move toward or away from each other, the first welding fixture and the second welding fixture both clamp a half liner, the shaping knife can be movably arranged on the welding machine for cutting the end face of the half liner, the first welding fixture and the second welding fixture are both provided with a roundness detection unit for detecting the roundness of the end face of the half liner, the infrared heating unit is arranged between the first welding fixture and the second welding fixture, and the first welding fixture and the second welding fixture can rotate synchronously.

[0006] The infrared heating unit can be movably arranged on the welding machine platform to adjust the distance between the infrared heating unit and the welding seam of the semi-inner liner.

[0007] The cutting station includes a cutting machine, a first cutting fixture, a second cutting fixture, an inflation unit, a cutting knife and a grinder. The first cutting fixture and the second cutting fixture can be movably arranged on the cutting machine toward or away from each other. The cutting knife and the grinder can be movably arranged on the cutting machine. The inflation unit is arranged on the cutting machine and is used to inflate and pressure-maintain the inner liner. The cutting knife and the grinder alternately process the welding parts of the inner liner. The first cutting fixture and the second cutting fixture can rotate synchronously.

[0008] The weld inspection station includes a weld inspection machine, a rotating fixture and a detection probe. The detection probe can be movably arranged on the weld inspection machine and aligned with the semi-inner liner welding seam. The rotating fixture is arranged on the weld inspection machine.

[0009] The airtight testing station includes an airtight testing machine, multiple cylindrical clamps, a pressurizing unit and a leak detection unit. The multiple cylindrical clamps are arranged on the airtight testing machine at equal intervals along a straight line. The pressurizing unit is arranged at the inflation end of the inner liner. The leak detection unit is arranged on the airtight testing machine and is located on one side of the semi-inner liner welding seam.

[0010] The injection molding station comprises a melting unit, an injection unit and a molding mold. One end of the injection unit is connected to the melting unit, and the other end of the injection unit is connected to the molding mold.

[0011] The material removal station includes a cutting machine, and a fixing fixture and a cutting knife arranged on the cutting machine. The fixing fixture is used to fix the half inner liner, and the cutting knife is movably arranged on the cutting machine to cut the remaining material of the half inner liner.

[0012] The conveying station includes a conveyor platform and conveyor rollers, and a plurality of conveyor rollers are rotatably arranged on the conveyor platform for conveying half inner shells.

[0013] The working principle and beneficial effects of the present invention are: The present invention discloses an automatic production line for injection molding, welding and testing of new energy hydrogen storage tanks. Specifically, a half tank product with an open end is firstly injection molded at an injection molding station, and then the half tank product is transferred to a material removal station by a six-axis manipulator to cut off the remaining material of the half tank product, and then the half tank product is transferred to a conveying station for conveying one by one. The six-axis manipulator takes two half tank products and places them in an infrared welding station. The first welding fixture and the second welding fixture on the welding machine clamp one half tank respectively. The first welding fixture and the second welding fixture can be annular structures and clamped by radial claws. The shaping knife on the welding machine can shape the end face of the half liner under the drive of the manipulator. The shaping process can be detected by the roundness detection unit. Then the first welding fixture and the second welding fixture are moved close to each other until the two ends of the half liner are abutted. The movement of the first welding fixture and the second welding fixture can be achieved by the motor and the gear rack structure. Of course, there is more than one way. Then the infrared heating unit heats and welds the abutment gap of the half liner. At the same time, the first welding fixture and the second welding fixture rotate synchronously, so that the end of the half liner can be welded. After welding is completed, it is transported to release the welding stress and then cut through the cutting station. After cutting, it enters the weld inspection station for weld quality inspection. Finally, it is tested for airtightness at the airtightness inspection station. After passing the test, it is marked to obtain the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] Figure 1 It is a schematic diagram of the overall structure of the production line in the present invention; Figure 2 This is a schematic diagram of the structure of the infrared welding station of the present invention; Figure 3 It is a schematic diagram of the cutting station structure in the present invention; Figure 4 This is a schematic diagram of the welding inspection station structure in the present invention; Figure 5 It is a schematic diagram of the structure of the airtight detection station in the present invention; Figure 6 It is a schematic diagram of the structure of the injection molding station in the present invention; In the figure: 1. Injection molding station, 2. Removal station, 3. Transfer station, 4. Infrared welding station, 5. Cutting station, 6. Welding seam detection station, 7. Airtightness detection station, 8. Six-axis manipulator, 9. Welding machine, 10. First welding fixture, 11. Second welding fixture, 12. Infrared heating unit, 13. Shaping knife, 14. Roundness detection unit, 15. Cutting machine, 16. First cutting fixture, 17. Second cutting fixture Cutting fixture, 18. Inflating unit, 19. Cutting knife, 20. Grinding tool, 21. Weld inspection machine, 22. Rotating fixture, 23. Inspection probe, 24. Air tightness inspection machine, 25. Cylinder fixture, 26. Pressurizing unit, 27. Leakage detection unit, 28. Melting unit, 29. Injection unit, 30. Molding mold, 31. Cutting machine, 32. Fixing fixture, 33. Cutting knife, 34. Conveyor table, 35. Conveyor roller. DETAILED DESCRIPTION

[0016] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figure 1 to Figure 6 As shown, this embodiment proposes an automatic production line for injection molding, welding and detection of new energy hydrogen storage liner, the production line includes an injection molding station 1, a material removal station 2, a conveying station 3, an infrared welding station 4, a cutting station 5, a weld detection station 6, and an airtight detection station 7, which are arranged in sequence. The production line also includes a plurality of six-axis manipulators 8, and the six-axis manipulators 8 are used to shear and transport the liner, wherein the infrared welding station 4 is located before the cutting station 5, and the infrared welding station 4 includes a welding machine 9, a first welding fixture 10, a second welding fixture 11, an infrared heating unit 12 and a shaping knife 13, wherein the first A welding fixture 10 and a second welding fixture 11 are both movably arranged on the welding machine 9 and can move toward or away from each other. The first welding fixture 10 and the second welding fixture 11 both clamp a half inner liner. The shaping knife 13 is movably arranged on the welding machine 9 for cutting the end face of the half inner liner. The first welding fixture 10 and the second welding fixture 11 are both provided with a roundness detection unit 14 for detecting the roundness of the end face of the half inner liner. The infrared heating unit 12 is arranged between the first welding fixture 10 and the second welding fixture 11. The first welding fixture 10 and the second welding fixture 11 can rotate synchronously.

[0018] In the present embodiment, an automatic production line for injection molding, welding and testing of new energy hydrogen storage tanks is disclosed. Specifically, a half tank product with an open end is firstly injection molded through an injection molding station 1, and then the half tank product is transferred to a material removal station 2 through a six-axis manipulator 8, and the remaining material of the half tank product is cut off, and then the half tank product is transferred to a conveying station 3 for conveying one by one. The six-axis manipulator 8 takes two half tank products and places them in an infrared welding station 4. The first welding fixture 10 and the second welding fixture 11 on the welding machine 9 clamp one half tank respectively. The first welding fixture 10 and the second welding fixture 11 can be an annular structure and clamped by radial claws. The shaping knife 13 on the welding machine 9 can shape the end face of the half liner under the drive of the manipulator. The shaping process can be detected by the roundness detection unit 14. Then the first welding fixture 10 and the second welding fixture 11 are close to each other until the two ends of the half liner are abutted. The movement of the first welding fixture 10 and the second welding fixture 11 can be achieved by a motor and a gear rack structure. Of course, there is more than one way. Then the infrared heating unit 12 heats and welds the abutment gap of the half liner. At the same time, the first welding fixture 10 and the second welding fixture 11 rotate synchronously, so that the end of the half liner is welded. After the welding is completed, it is transported to release the welding stress and then cut by the cutting station 5. After the cutting is completed, it enters the weld inspection station 6 for weld quality inspection, and finally the airtightness inspection is carried out at the airtightness inspection station 7. After passing the inspection, the finished product is marked.

[0019] The infrared heating unit 12 is movably disposed on the welding machine 9 to adjust the distance between the infrared heating unit 12 and the welding seam of the semi-inner liner.

[0020] In this embodiment, the infrared heating unit 12 can be moved on the welding machine 9, which can be achieved by a telescopic device such as a screw. The distance between the infrared heating unit 12 and the welding seam can be determined according to the thickness and material of the inner liner and the required welding speed.

[0021] The cutting station 5 includes a cutting machine 15, a first cutting fixture 16, a second cutting fixture 17, an inflation unit 18, a cutting tool 19 and a grinder 20. The first cutting fixture 16 and the second cutting fixture 17 can be movably arranged on the cutting machine 15 toward or away from each other. The cutting tool 19 and the grinder 20 can be movably arranged on the cutting machine 15. The inflation unit 18 is arranged on the cutting machine 15 and is used to inflate and pressure the inner liner. The cutting tool 19 and the grinder 20 alternately process the welding part of the inner liner. The first cutting fixture 16 and the second cutting fixture 17 can rotate synchronously.

[0022] In this embodiment, at the cutting station 5, the first cutting fixture 16 and the second cutting fixture 17 clamp the welded inner liner, and then the inner liner is inflated and pressurized through the inflation unit 18. The first cutting fixture 16 and the second cutting fixture 17 rotate to drive the inner liner to rotate, and then the cutting knife 19 is close to the surface of the weld seam of the inner liner. As the inner liner rotates, the remaining material at the weld seam is cut off, and then the grinder 20 is used to grind the cut position to make the surface more complete.

[0023] The weld inspection station 6 includes a weld inspection machine 21 , a rotating fixture 22 and a detection probe 23 . The detection probe 23 can be movably arranged on the weld inspection machine 21 and aligned with the half-liner welding seam. The rotating fixture 22 is arranged on the weld inspection machine 21 .

[0024] In this embodiment, the inner liner is clamped by a rotating clamp 22 on a weld inspection machine 21, and then the robot arm drives the inspection probe 23 to stick to the weld, and ultrasonic inspection is used to inspect the welding quality.

[0025] The airtight testing station 7 includes an airtight testing machine 24, a plurality of cylindrical fixtures 25, a pressurizing unit 26 and a leak detection unit 27. The plurality of cylindrical fixtures 25 are arranged on the airtight testing machine 24 at equal intervals along a straight line. The pressurizing unit 26 is arranged at the inflation end of the inner liner. The leak detection unit 27 is arranged on the airtight testing machine 24 and is located on one side of the half inner liner welding seam.

[0026] In this embodiment, a plurality of cylindrical clamps 25 are arranged on the airtightness detection machine 24. The cylindrical clamps 25 may be two semicircular clamps that can be opened to clamp the inner liner. The inner liner is inflated and pressurized by a pressurizing unit 26. A leak detection unit 27 is arranged next to the inner liner to detect whether the airtightness meets the requirements. The cylindrical clamps 25 can prevent the inner liner from being pressurized and causing excessive deformation that affects the quality.

[0027] The injection molding station 1 includes a melting unit 28 , an injection unit 29 and a molding die 30 . One end of the injection unit 29 is connected to the melting unit 28 , and the other end of the injection unit 29 is connected to the molding die 30 .

[0028] In this embodiment, the raw material is melted by the melting unit 28, and the melted molding raw material is injected into the molding mold 30 by the injection unit 29 to form a semi-liner product by injection molding.

[0029] The material removal station includes a cutting machine table 31, and a fixing fixture 32 and a cutting knife 33 arranged on the cutting machine table 31. The fixing fixture 32 is used to fix the half inner liner, and the cutting knife 33 is movably arranged on the cutting machine table 31 to cut the remaining material of the half inner liner.

[0030] In this embodiment, on the cutting machine table 31, the injection molded half liner product is fixed by a fixing fixture 32, and the remaining material of the half liner is cut off by a cutting knife 33 for preliminary shaping.

[0031] The conveying station includes a conveyor platform 34 and conveyor rollers 35. A plurality of conveyor rollers 35 are rotatably disposed on the conveyor platform 34 for conveying half inner shells.

[0032] In this embodiment, the semi-liner after preliminary shaping and material removal is placed on the conveying rollers 35 on the conveyor table 34 for transportation. A certain number of semi-liner products can be temporarily stored at the conveying station to adjust the rhythm between the stations.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic production line for injection molding, welding and detection of new energy hydrogen storage tanks, characterized in that: The production line comprises an injection molding station (1), a material removal station (2), a conveying station (3), an infrared welding station (4), a cutting station (5), a weld detection station (6), and an airtightness detection station (7) which are arranged in sequence. The production line also comprises a plurality of six-axis manipulators (8), wherein the six-axis manipulators (8) are used to shear and convey the inner liner. The infrared welding station (4) is located before the cutting station (5). The infrared welding station (4) comprises a welding machine (9), a first welding fixture (10), a second welding fixture (11), an infrared heating unit (12), and a shaping knife (13). The first welding fixture (10) and the second welding fixture (11) are The connecting clamps (11) are movably arranged on the welding machine (9) and can move towards or away from each other; the first welding clamp (10) and the second welding clamp (11) both clamp a half inner liner; the shaping knife (13) is movably arranged on the welding machine (9) for cutting the end surface of the half inner liner; the first welding clamp (10) and the second welding clamp (11) are both provided with a roundness detection unit (14) for detecting the roundness of the end surface of the half inner liner; the infrared heating unit (12) is arranged between the first welding clamp (10) and the second welding clamp (11); and the first welding clamp (10) and the second welding clamp (11) can rotate synchronously.

2. The new energy hydrogen storage tank injection welding detection automatic production line according to claim 1 is characterized in that: The infrared heating unit (12) is movably arranged on the welding machine table (9) and is used to adjust the distance between the infrared heating unit (12) and the half liner welding seam.

3. The new energy hydrogen storage tank injection welding detection automatic production line according to claim 1 is characterized in that: The cutting station (5) comprises a cutting machine (15), a first cutting fixture (16), a second cutting fixture (17), an inflation unit (18), a cutting knife (19) and a grinding tool (20); the first cutting fixture (16) and the second cutting fixture (17) are both movably arranged on the cutting machine (15) towards or away from each other; the cutting knife (19) and the grinding tool (20) are movably arranged on the cutting machine (15); the inflation unit (18) is arranged on the cutting machine (15) and is used to inflate and maintain pressure on the inner liner; the cutting knife (19) and the grinding tool (20) alternately process the welding position of the inner liner; and the first cutting fixture (16) and the second cutting fixture (17) are both rotatable synchronously.

4. The new energy hydrogen storage tank injection welding detection automatic production line according to claim 1 is characterized in that: The weld inspection station (6) comprises a weld inspection machine platform (21), a rotating fixture (22) and a detection probe (23); the detection probe (23) is movably arranged on the weld inspection machine platform (21) and aligned with the half-liner welding seam; the rotating fixture (22) is arranged on the weld inspection machine platform (21).

5. The new energy hydrogen storage tank injection welding detection automatic production line according to claim 1 is characterized in that: The airtightness testing station (7) comprises an airtightness testing machine (24), a plurality of cylindrical fixtures (25), a pressurizing unit (26) and a leak detection unit (27); the plurality of cylindrical fixtures (25) are arranged on the airtightness testing machine (24) at equal intervals along a straight line; the pressurizing unit (26) is arranged at the inflation end of the liner; and the leak detection unit (27) is arranged on the airtightness testing machine (24) and is located on one side of a half liner welding seam.

6. The new energy hydrogen storage tank injection welding detection automatic production line according to claim 1 is characterized in that: The injection molding station (1) comprises a melting unit (28), an injection unit (29) and a molding die (30); one end of the injection unit (29) is connected to the melting unit (28), and the other end of the injection unit (29) is connected to the molding die (30).

7. The new energy hydrogen storage tank injection welding detection automatic production line according to claim 1 is characterized in that: The material removal station comprises a cutting machine (31), and a fixing fixture (32) and a cutting knife (33) arranged on the cutting machine (31), wherein the fixing fixture (32) is used to fix the half inner liner, and the cutting knife (33) is movably arranged on the cutting machine (31) and is used to cut the remaining material of the half inner liner.

8. The new energy hydrogen storage tank injection welding detection automatic production line according to claim 1 is characterized in that: The conveying station comprises a conveying platform (34) and conveying rollers (35), and a plurality of conveying rollers (35) are rotatably arranged on the conveying platform (34) for conveying the half inner container.

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