Automatic cutting machine for cylinder after injection molding of IV-type hydrogen storage cylinder liner

Abstract

The utility model relates to manufacturing of a cylinder of an IV-type hydrogen storage cylinder injection-molded inner container, in particular to an automatic cylinder cutting machine for an IV-type hydrogen storage cylinder after injection molding, which comprises a compression and waste removal assembly, an end cover milling assembly, a rotary positioning assembly, a complete machine frame and an electric control cabinet. The whole machine frame provides installation support for the pressing and waste removing assembly, the end cover milling assembly, the rotary positioning assembly and the electric control cabinet. The rotary positioning assembly is used for clamping an injection molding barrel to be cut and driving the injection molding barrel to rotate. The pressing and waste removing assembly is used for pressing the injection molding barrel when the injection molding barrel is cut and removing the cut plug after cutting is completed. The end cover milling assembly is used for cutting the injection molding barrel; the electric control cabinet provides power for the pressing and waste removing assembly, the end cover milling assembly and the rotary positioning assembly and is in communication connection with the pressing and waste removing assembly. According to the automatic cutting machine, through an accurate mechanical structure and a control system, the precision and consistency of cutting each time can be ensured, and errors and uncertainty caused by manual operation are avoided.

Description

Technical Field

[0001] The utility model relates to the manufacture of a cylinder of an injection-molded inner liner of a type IV hydrogen storage bottle, and in particular to an automatic cutting machine for the cylinder of the injection-molded inner liner of a type IV hydrogen storage bottle. Background Art

[0002] The injection molded inner cylinder of the Type IV hydrogen storage bottle is the core component of the hydrogen storage cylinder. After the injection molded inner cylinder and the head of the Type IV hydrogen storage bottle are manufactured, the two are subsequently connected together through a welding process to form a complete Type IV hydrogen storage bottle inner cylinder.

[0003] like Figure 8 As shown in the left side view, after the injection molding of the IV-type hydrogen storage bottle, one end of the injection molding cylinder 6 has a 6-2 plug, which needs to be removed and the length of the remaining part controlled within a certain tolerance range before it can be used for subsequent welding and assembly with the head, such as Figure 1 As shown in the middle right side view, the injection molding cylinder 4 is divided into two parts, namely, the inner cylinder 6-1 and the plug 6-2 after cutting.

[0004] At present, the cutting of the cylinder is basically carried out manually by rotating the product manually using a hydraulic device. In the prior art, the automatic cutting equipment for the injection-molded inner cylinder of the type IV hydrogen storage bottle is basically blank, and the incision is relatively uneven and the consistency is poor. Therefore, an automatic cutting machine for the cylinder of the injection-molded inner cylinder of the type IV hydrogen storage bottle is proposed. Utility Model Content

[0005] In order to solve the above problems, the utility model provides an automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding. The automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding can ensure the accuracy and consistency of each cutting through a precise mechanical structure and control system, avoiding errors and uncertainties caused by manual operation; it can complete the cutting operation continuously and quickly without frequent manual intervention, thereby greatly improving production efficiency.

[0006] The technical solution of the utility model is as follows:

[0007] An automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding, comprising a pressing and waste removal component, an end cover milling component, a rotation positioning component, a complete machine frame and an electric control cabinet;

[0008] The complete machine frame provides installation support for the compaction and waste removal assembly, the end cover milling assembly, the rotation positioning assembly and the electric control cabinet;

[0009] The rotary positioning assembly is used to clamp the injection molding cylinder to be cut and drive the injection molding cylinder to rotate;

[0010] The pressing and waste removal assembly is used to press the injection molding cylinder when cutting the injection molding cylinder and remove the cut plug after cutting is completed;

[0011] The end cap milling assembly is used to cut the injection molding cylinder;

[0012] The electrical control cabinet provides power and communication connections to the compaction and waste removal assembly, the end cap milling assembly and the rotary positioning assembly.

[0013] The bottom of the whole machine frame is equipped with height-adjustable feet.

[0014] The clamping and waste removal assembly includes a fixed bracket, a cylinder mounting bracket, a milling clamping cylinder, a clamping piece and a vacuum suction cup. The cylinder mounting bracket is rotatably mounted on the fixed bracket through a bracket rotation drive device, the cylinder body of the milling clamping cylinder is fixedly mounted on the cylinder mounting bracket, the clamping piece is rotatably mounted on the telescopic end of the milling clamping cylinder, and a vacuum suction cup with a telescopic connecting element is also installed on the telescopic end of the milling clamping cylinder.

[0015] The bracket rotation driving device includes a waste shifting cylinder and a self-made connecting part A. The cylinder body of the waste shifting cylinder is fixedly connected to the fixed bracket. The telescopic end of the waste shifting cylinder is hinged to the self-made connecting part A. The self-made connecting part A is fixedly connected to the cylinder mounting bracket. The hinge point between the telescopic end of the waste shifting cylinder and the self-made connecting part A is not on the rotation center of the cylinder mounting bracket.

[0016] The telescopic connection element is a cylinder with a guide rod, the cylinder body of the cylinder with a guide rod is fixed to the telescopic end of the milling and pressing cylinder, and the telescopic end of the cylinder with a guide rod is fixedly connected with a vacuum suction cup.

[0017] A dust suction cylinder is arranged at the telescopic end of the milling and pressing cylinder.

[0018] The end cover milling assembly comprises an electric spindle and a milling cutter. The electric spindle can be mounted on the whole machine frame in a position adjustable in vertical and horizontal directions, and the milling cutter is mounted at the end of the electric spindle.

[0019] The rotary positioning assembly includes a fixed base, a hollow support shaft, a three-jaw pneumatic clamp and a support claw. The fixed base is fixedly arranged on the whole machine frame. The hollow support shaft is rotatably mounted on the fixed base through a support shaft rotation drive device. A three-jaw pneumatic clamp is installed on the top of the hollow support shaft, and a support claw is installed on the three-jaw pneumatic clamp.

[0020] The support shaft rotation driving device includes a servo motor C and a transmission system, and the servo motor C is connected to the hollow support shaft through the transmission system.

[0021] The transmission system includes a large toothed wheel, a small toothed wheel and a toothed belt. The large toothed wheel is fixedly connected to the bottom of the hollow support shaft, the small toothed wheel is fixedly connected to the output shaft of the servo motor C, and the large toothed wheel is connected to the small toothed wheel through a toothed belt.

[0022] The beneficial effects of the utility model are:

[0023] 1. The utility model discloses an automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding. The automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding can ensure the accuracy and consistency of each cutting through a precise mechanical structure and control system, avoiding the errors and uncertainties caused by manual operation. This is crucial for the manufacture of the inner liner of a type IV hydrogen storage bottle, because the precise size and shape of the inner liner directly affects the subsequent welding quality with the head and the performance of the entire hydrogen storage bottle.

[0024] 2. The utility model discloses an automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding. The automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding can continuously and quickly complete the cutting operation without frequent manual intervention, thereby greatly improving production efficiency. In industrial production, time is cost, and the introduction of automated equipment can significantly shorten the production cycle and reduce production costs.

[0025] 3. The utility model discloses an automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding. The automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding improves the working environment. The traditional manual cutting method is often accompanied by unfavorable factors such as noise and dust, which poses a threat to the health of workers. The automatic cutting machine effectively reduces the spread of dust and the noise level through the design of the dust collection cylinder, providing workers with a more comfortable and safe working environment.

[0026] 4. The utility model discloses an automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding. The automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding reduces the labor intensity: manual cutting requires workers to hold the hydraulic device for a long time to rotate and cut, which is labor-intensive and easy to fatigue. The automatic cutting machine completes the cutting operation completely by machinery and control system, and workers only need to perform simple operation and monitoring, which greatly reduces the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.

[0028] In the attached picture:

[0029] Figure 1It is a three-dimensional structural schematic diagram of an automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding according to an embodiment of the utility model;

[0030] Figure 2 It is a three-dimensional structural schematic diagram of an automatic cutting machine (without protective cover) for the cylinder of a type IV hydrogen storage bottle after injection molding according to an embodiment of the utility model;

[0031] Figure 3 It is a three-dimensional structural schematic diagram of a compression and waste removal component of an automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding according to an embodiment of the utility model;

[0032] Figure 4 It is a schematic diagram of a downward projection of a pressing and waste removal assembly of an automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding according to an embodiment of the utility model;

[0033] Figure 5 It is a three-dimensional structural schematic diagram of an end cap milling assembly of an automatic cutting machine for the cylinder after injection molding of a type IV hydrogen storage bottle liner according to an embodiment of the utility model;

[0034] Figure 6 It is a three-dimensional structural schematic diagram of a rotary positioning assembly of an automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding according to an embodiment of the utility model;

[0035] Figure 7 It is a bottom projection schematic diagram of a rotary positioning assembly of an automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding according to an embodiment of the utility model;

[0036] Figure 8 This is a schematic diagram of the structure of the injection-molded inner shell of a Type IV hydrogen storage bottle before and after cutting;

[0037] The components represented by the reference numerals in the figure are:

[0038] The utility model: 1. Clamping and waste removal assembly, 2. End cover milling assembly, 3. Rotation positioning assembly, 4. Complete machine frame, 5. Electric control cabinet, 6. Injection cylinder, 7. Protective cover, 1-1. Fixed bracket, 1-2. Rotation limit stopper, 1-3. Cylinder mounting bracket, 1-4. Milling clamping cylinder, 1-5. Clamping piece, 1-6. Cylinder with guide rod, 1-7. Dust collection cylinder, 1-8. Vacuum suction cup, 1-9. Waste displacement cylinder, 1-10. Self-made connector A, 1-11. Cross roller bearing, 2-1 Module assembly A, 2-2, servo motor A, 2-3, self-made connector B, 2-4, servo motor B, 2-5, electric spindle, 2-6, supporting structure body, 2-7, module assembly B, 3-1, fixed base, 3-2, slewing bearing, 3-3, hollow supporting shaft, 3-4, three-jaw pneumatic clamp, 3-5, supporting claw, 3-6, servo motor C, 3-7, large toothed wheel, 3-8, small toothed wheel, 3-9, toothed belt, 3-10, pneumatic slip ring, 6-1, inner cylinder, 6-2, plugging. DETAILED DESCRIPTION

[0039] Embodiment 1, as Figure 1 and Figure 2 As shown, the automatic cutting machine for the cylinder of the type IV hydrogen storage bottle after injection molding includes a pressing and waste removal component 1, an end cover milling component 2, a rotation positioning component 3, a complete machine frame 4, an electric control cabinet 5 and a protective cover 7.

[0040] The whole machine frame 4 provides installation support for the pressing and waste removal assembly 1 , the end cover milling assembly 2 , the rotation positioning assembly 3 and the electric control cabinet 5 .

[0041] The rotary positioning assembly 3 is used to clamp the injection molding cylinder 6 to be cut and drive the injection molding cylinder 6 to rotate.

[0042] The pressing and waste removal assembly 1 is used to press the injection molding cylinder 6 when cutting the injection molding cylinder 6 and to remove the cut plug 6 - 2 after the cutting is completed.

[0043] The end cap milling assembly 2 is used for cutting the injection molding cylinder 6 .

[0044] The electric control cabinet 5 provides power and communication connection to the compaction and waste removal assembly 1 , the end cover milling assembly 2 and the rotation positioning assembly 3 .

[0045] The protective cover 7 is fixed on the whole machine frame 4 to protect other components.

[0046] In order to adjust the level of the equipment, height-adjustable feet are installed at the bottom of the whole machine frame 4.

[0047] like Figure 3 and Figure 4As shown, the clamping and waste removal assembly 1 includes a fixed bracket 1-1, a cylinder mounting bracket 1-3, a milling clamping cylinder 1-4, a clamping member 1-5 and a vacuum suction cup 1-8, the cylinder mounting bracket 1-3 is rotatably mounted on the fixed bracket 1-1 through a bracket rotation driving device, the cylinder body of the milling clamping cylinder 1-4 is fixedly mounted on the cylinder mounting bracket 1-3, the clamping member 1-5 is rotatably mounted on the telescopic end of the milling clamping cylinder 1-4, and a vacuum suction cup 1-8 with a telescopic connecting element is also installed on the telescopic end of the milling clamping cylinder 1-4.

[0048] The bracket rotation driving device includes a waste shifting cylinder 1-9 and a self-made connecting part A1-10. The cylinder body of the waste shifting cylinder 1-9 is fixedly connected to the fixed bracket 1-1. The telescopic end of the waste shifting cylinder 1-9 is hinged to the self-made connecting part A1-10. The self-made connecting part A1-10 is fixedly connected to the cylinder mounting bracket 1-3. The hinge point between the telescopic end of the waste shifting cylinder 1-9 and the self-made connecting part A1-10 is not on the rotation center of the cylinder mounting bracket 1-3.

[0049] The telescopic connecting element is a guide rod cylinder 1-6, the cylinder body of the guide rod cylinder 1-6 is fixed to the telescopic end of the milling and clamping cylinder 1-4, the telescopic end of the guide rod cylinder 1-6 is fixedly connected with a vacuum suction cup 1-8, and the vacuum suction cup 1-8 is connected to the vacuum generator.

[0050] A dust collection cylinder 1-7 is provided at the telescopic end of the milling and pressing cylinder 1-4, and a vacuum cleaner is installed in the dust collection cylinder 1-7. The vacuum cleaner can be a common mature product on the market, and it only needs to be able to achieve the dust collection function.

[0051] like Figure 5 As shown, the end cover milling assembly 2 includes an electric spindle 2-5 and a milling cutter. The electric spindle 2-5 can be mounted on the whole machine frame 4 so as to adjust its position in the vertical and horizontal directions. The milling cutter is mounted at the end of the electric spindle 2-5.

[0052] like Figure 6 and Figure 7 As shown, the rotation positioning assembly 3 includes a fixed base 3-1, a hollow support shaft 3-3, a three-jaw pneumatic clamp 3-4 and a support claw 3-5. The fixed base 3-1 is fixedly arranged on the whole machine frame 4. The hollow support shaft 3-3 is rotatably mounted on the fixed base 3-1 through a support shaft rotation drive device. A three-jaw pneumatic clamp 3-4 is mounted on the top of the hollow support shaft 3-3, and a support claw 3-5 is mounted on the three-jaw pneumatic clamp 3-4.

[0053] The support shaft rotation driving device includes a servo motor C3-6 and a transmission system, and the servo motor C3-6 is connected to the hollow support shaft 3-3 through the transmission system.

[0054] The transmission system includes a large toothed wheel 3-7, a small toothed wheel 3-8 and a toothed belt 3-9. The large toothed wheel 3-7 is fixedly connected to the bottom of the hollow support shaft 3-3, the small toothed wheel 3-8 is fixedly connected to the output shaft of the servo motor C3-6, and the large toothed wheel 3-7 is connected to the small toothed wheel 3-8 through a toothed belt 3-9.

[0055] Embodiment 2, as Figure 2 As shown, the automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding includes a pressing and waste removal component 1, an end cover milling component 2, a rotation positioning component 3, a complete machine frame 4 and an electric control cabinet 5.

[0056] The electric control cabinet is fixedly installed on the whole machine frame 4 at the rear side, the end cover milling assembly 2 is fixedly installed on the whole machine frame 4 and is located in the right front of the electric control cabinet 5, the clamping and waste removal assembly 1 is fixedly installed above the main structure of the end cover milling assembly 2, the rotation positioning assembly 3 is fixedly installed on the right front of the whole machine frame 4, and the bottom of the whole machine frame 4 is provided with height-adjustable feet for adjusting the level of the equipment.

[0057] Set up recipes for products of different specifications in the equipment control system. One recipe corresponds to parameter information for each position in the equipment for a set of products. You only need to set parameters once for each product, and you can directly call the number the next time you produce it.

[0058] Through various adjustment mechanisms and stroke designs, the equipment increases product coverage to: diameter 200mm-400mm, product length 400-835mm, greatly improving the flexible coverage of the product and to a considerable extent reducing the cost expenditure of the client for product equipment with different bottle sizes.

[0059] like Figure 3 and Figure 4As shown, the clamping and waste removal assembly 1 includes a fixed bracket 1-1, a rotation limit stopper 1-2, a cylinder mounting bracket 1-3, a milling clamping cylinder 1-4, a clamping member 1-5, a cylinder with a guide rod 1-6, a dust collection tube 1-7, a vacuum suction cup 1-8, a waste shifting cylinder 1-9, a self-made connecting member A1-10 and a cross roller bearing 1-11. The fixed bracket 1-1 is fixedly installed above the main structural member of the end cover milling assembly 2 by bolts, and the tail of the waste shifting cylinder 1-9 is connected to the fixed bracket 1-1 by a hinged form, and the end of the output shaft is hingedly connected to the self-made connecting member A1-10 on the bottom surface of the cross roller bearing 1-11 for driving the active ring of the cross roller bearing 1-11 installed on the fixed bracket 1-1 by bolts, so as to drive the overall mechanism at the front end to rotate and transfer the waste end cover to the waste material end cover. In the collection area, the limit stop 1-2 is installed on the movable ring of the cross roller bearing 1-11 by bolts, and the cylinder mounting bracket 1-3 is bolted and fixedly connected above the limit stop 1-2. A milling clamping cylinder 1-4 is fixedly installed at the end of the cylinder mounting bracket 1-3, and two groups of guide shafts and sleeves are respectively arranged at both ends of the cylinder in parallel with the cylinder output axis direction. A clamping member 1-5 is connected to the end of the milling clamping cylinder 1-4 through a ball bearing, and two cylinders 1-6 with guide rods are fixedly installed on the outside of the two groups of guide columns of the milling clamping cylinder 1-4, and two groups of vacuum suction cups 1-8 are fixedly installed at the output end thereof for sucking the waste end cover left after milling cutting, and a dust suction cylinder 1-7 made of sheet metal bending and welding is arranged on the left side of the output shaft end of the milling clamping cylinder 1-4 for sucking away the waste chips generated by grinding during grinding.

[0060] During cutting, the guide rod cylinder 1-6 of the vacuum suction cup 1-8 is in a retracted state. At this time, the vacuum suction cup 1-8 is not lower than the clamping piece 1-5. The clamping piece 1-5 clamps the injection molding cylinder 6 under the action of the milling clamping cylinder 1-4. When the cutting is completed, the clamping piece 1-5 is released, and the guide rod cylinder 1-6 is extended, so that the vacuum suction cup 1-8 contacts the cut plug 6-2, and vacuum is passed through the vacuum suction cup 1-8 so that it sucks the plug 6-2, and then the waste shifting cylinder 1-9 drives the cylinder mounting bracket 1-3 to rotate to the waste position, and then the vacuum suction cup 1-8 is released, and the plug 6-2 falls into the waste box.

[0061] like Figure 5As shown, the end cover milling assembly 2 includes a module assembly A2-1, a servo motor A2-2, a self-made connecting piece B2-3, a servo motor B2-4, an electric spindle 2-5, a supporting structure body 2-6 and a module assembly B2-7, wherein the lower end of the supporting structure body 2-6 is fixedly bolted on the upper rear of the whole machine frame 4, the servo motor A2-2 drives the ball screw assembly to move up and down in the Z direction, the rear end of the module assembly A2-1 is fixedly installed in front of the supporting structure body 2-6, and the module assembly B2-7 perpendicular to the linear guide rail of the module assembly A2-1 is bolted on the slider of the module assembly A2-1, the module assembly B2-7 is driven by a servo motor B2-4, and the self-made connecting piece B2-3 is fixedly installed on the slider of the module assembly B2-7, the electric spindle 2-5 is installed at the end of the self-made connecting piece B2-3, and a customized milling cutter is arranged at the end of the electric spindle.

[0062] like Figure 6 and Figure 7 As shown, the rotary positioning assembly 3 includes a fixed base 3-1, a slewing bearing 3-2, a hollow support shaft 3-3, a three-jaw pneumatic clamp 3-4, a support claw 3-5, a servo motor C3-6, a large toothed wheel 3-7, a small toothed wheel 3-8 and a toothed belt 3-9. The slewing bearing 3-2 fixing ring bolt is installed on the left side of the fixed base 3-1, and is driven by the servo motor C3-6 to drive the large toothed wheel 3-7, the small toothed wheel 3-8 and the toothed belt 3-9. 7 is installed concentrically on the slewing bearing 3-2, and the small toothed wheel 3-8 is installed concentrically on the output shaft of the servo motor C3-6. The hollow support shaft 3-3 is installed on the movable ring of the slewing bearing 3-2 by bolts, and a three-jaw pneumatic clamp 3-4 is connected above it by bolts. Three groups of supporting claws 3-5 made of non-metallic materials are installed at the ends of the three jaws of the three-jaw pneumatic clamp 3-4 to support the inner wall of the cylinder placed thereon to be milled and cut, and milling and cutting are performed while rotating.

[0063] The automatic cutting machine for the barrel of the type IV hydrogen storage bottle after injection molding uses the PLC internal program to accurately control the moving position of the milling cutter, and cooperates with the servo rotation of the equipment itself to complete the automatic cutting of the barrel. The waste shifting cylinder and milling clamping cylinder on the upper part of the equipment are precisely coordinated with the lower servo rotation to complete multiple groups of actions such as automatic cutting process synchronous rotation and waste removal. In addition, the control system is set with recipes for products of different specifications. One recipe corresponds to the parameter information of each position in the equipment for a set of products. Each product only needs to set the parameters once, and the number can be directly called during the next production, which greatly improves the production efficiency and product qualification of workpiece cutting and grinding.

Claims

1. An automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding, characterized in that: It includes a pressing and waste removal component (1), an end cover milling component (2), a rotation positioning component (3), a complete machine frame (4) and an electric control cabinet (5); The whole machine frame (4) provides installation support for the pressing and waste removal assembly (1), the end cover milling assembly (2), the rotation positioning assembly (3) and the electric control cabinet (5); The rotary positioning assembly (3) is used to clamp the injection molding cylinder (6) to be cut and drive the injection molding cylinder (6) to rotate; The pressing and waste removal assembly (1) is used to press the injection molding cylinder (6) when cutting the injection molding cylinder (6) and to remove the cut plug (6-2) after the cutting is completed; The end cover milling assembly (2) is used to cut the injection molding cylinder (6); The electric control cabinet (5) provides power and communication connection to the pressing and waste removal component (1), the end cover milling component (2) and the rotation positioning component (3).

2. According to claim 1, the automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding is characterized in that: The bottom of the whole machine frame (4) is provided with height-adjustable feet.

3. According to claim 1, the automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding is characterized in that: The clamping and waste removal assembly (1) comprises a fixed bracket (1-1), a cylinder mounting bracket (1-3), a milling clamping cylinder (1-4), a clamping member (1-5) and a vacuum suction cup (1-8); the cylinder mounting bracket (1-3) is rotatably mounted on the fixed bracket (1-1) via a bracket rotation drive device; the cylinder body of the milling clamping cylinder (1-4) is fixedly mounted on the cylinder mounting bracket (1-3); the clamping member (1-5) is rotatably mounted on the telescopic end of the milling clamping cylinder (1-4); and a vacuum suction cup (1-8) with a telescopic connecting element is also mounted on the telescopic end of the milling clamping cylinder (1-4).

4. According to claim 3, the automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding is characterized in that: The support rotation driving device comprises a waste material displacement cylinder (1-9) and a self-made connecting piece A (1-10); the cylinder body of the waste material displacement cylinder (1-9) is fixedly connected to the fixed support (1-1); the telescopic end of the waste material displacement cylinder (1-9) is hinged to the self-made connecting piece A (1-10); the self-made connecting piece A (1-10) is fixedly connected to the cylinder mounting support (1-3); and the hinge point between the telescopic end of the waste material displacement cylinder (1-9) and the self-made connecting piece A (1-10) is not on the rotation center of the cylinder mounting support (1-3).

5. According to claim 3, the automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding is characterized in that: The telescopic connection element is a cylinder with a guide rod (1-6), the cylinder body of the cylinder with a guide rod (1-6) is fixed to the telescopic end of the milling pressing cylinder (1-4), and the telescopic end of the cylinder with a guide rod (1-6) is fixedly connected to a vacuum suction cup (1-8).

6. The automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding according to claim 3 is characterized in that: A dust suction cylinder (1-7) is provided at the telescopic end of the milling and pressing cylinder (1-4).

7. The automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding according to claim 1 is characterized in that: The end cover milling assembly (2) comprises an electric spindle (2-5) and a milling cutter; the electric spindle (2-5) is mounted on the whole machine frame (4) in a position adjustable in vertical and horizontal directions; and the milling cutter is mounted at the end of the electric spindle (2-5).

8. The automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding according to claim 1 is characterized in that: The rotary positioning assembly (3) comprises a fixed base (3-1), a hollow support shaft (3-3), a three-jaw pneumatic clamp (3-4) and a support claw (3-5); the fixed base (3-1) is fixedly arranged on the whole machine frame (4); the hollow support shaft (3-3) is rotatably mounted on the fixed base (3-1) via a support shaft rotation drive device; a three-jaw pneumatic clamp (3-4) is mounted on the top of the hollow support shaft (3-3); and a support claw (3-5) is mounted on the three-jaw pneumatic clamp (3-4).

9. The automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding according to claim 8 is characterized in that: The support shaft rotation driving device comprises a servo motor C (3-6) and a transmission system, and the servo motor C (3-6) is connected to the hollow support shaft (3-3) through the transmission system.

10. The automatic cutting machine for the cylinder of a type IV hydrogen storage bottle after injection molding according to claim 9, characterized in that: The transmission system comprises a large toothed wheel (3-7), a small toothed wheel (3-8) and a toothed belt (3-9); the large toothed wheel (3-7) is fixedly connected to the bottom of the hollow support shaft (3-3); the small toothed wheel (3-8) is fixedly connected to the output shaft of the servo motor C (3-6); and the large toothed wheel (3-7) is connected to the small toothed wheel (3-8) via a toothed belt (3-9).

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