Automatic cutting and grinding machine for end socket after injection molding of IV-type hydrogen storage bottle liner

Abstract

The utility model relates to the technical field of IV-type hydrogen storage cylinder injection molding inner container end socket manufacturing, in particular to an automatic cutting and grinding machine for an end socket after IV-type hydrogen storage cylinder inner container injection molding, which comprises a three-station composite auxiliary assembly, a cutting and grinding assembly, a rotary positioning assembly, a complete machine frame and an electric control cabinet, the rotary positioning assembly is used for fixing the IV-type hydrogen storage cylinder liner injection-molded end socket and driving the IV-type hydrogen storage cylinder liner injection-molded end socket to rotate; the cutting and polishing assembly is used for cutting or polishing the end socket of the IV-type hydrogen storage cylinder liner after injection molding; the three-station composite auxiliary assembly comprises three switchable separating and pressing-disengaging assemblies, a cut end cover picking assembly and an insert core picking assembly, wherein the three switchable separating and pressing-disengaging assemblies are used for pressing the cut end cover of the end socket after injection molding of the IV-type hydrogen storage bottle inner container during cutting, the cut end cover picking assembly is used for picking the cut end cover, and the insert core picking assembly is used for picking up the insert core. The automatic cutting and grinding machine has the remarkable advantages of solving the problems of low automation degree, low efficiency, poor precision, poor safety and the like in the current production process.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing injection-molded liner heads of type IV hydrogen storage bottles, and in particular to an automatic cutting and grinding machine for injection-molded liner heads of type IV hydrogen storage bottles. Background Art

[0002] The injection-molded liner of the Type IV hydrogen storage bottle is the core component of the hydrogen storage bottle. In order to form a special shape at the end of the head during the injection molding process, it is necessary to insert an external mold that is completely in line with the shape of the head before injection molding, which is called an auxiliary part such as an insert. Figure 6 As shown, after injection molding of the inner liner of the Type IV hydrogen storage bottle, the head consists of an inlet, a head and an end cap. After the injection molding is completed, the inlet embedded in the injection molded body is separated from the head by cutting the end cap at A and ejecting it. The removed inlet is recycled and reused, and the cut position of the head needs to be polished to the same basic shape as the shoulder position of the head.

[0003] There is a basic blank of automatic cutting and grinding equipment for injection-molded inner liner heads of type IV hydrogen storage bottles on the market. Currently, the head cutting is basically carried out manually by rotating the product manually using a hydraulic device, and then manually grinding is performed after cutting. The separation of the inserts is also performed by manual buttons in the form of pneumatic or hydraulic pressure. The overall cutting, grinding and separation operation time is long, and the incision is relatively uneven. After grinding, the consistency with the bottle shoulder position of the head is not good. Therefore, an automatic cutting and grinding machine for the head of the injection-molded inner liner of a type IV hydrogen storage bottle is proposed. Utility Model Content

[0004] In order to solve the above problems, the utility model provides an automatic cutting and grinding machine for the head of the type IV hydrogen storage bottle inner liner after injection molding. The automatic cutting and grinding machine for the head of the type IV hydrogen storage bottle inner liner after injection molding has significant advantages in solving the problems of low automation, low efficiency, poor precision and poor safety in the current production process; it helps to improve the production efficiency and quality level of hydrogen storage bottles and promote the rapid development of the hydrogen energy industry.

[0005] The technical solution of the utility model is as follows:

[0006] An automatic cutting and grinding machine for the head of a type IV hydrogen storage bottle after injection molding, comprising a three-station composite auxiliary component, a cutting and grinding component, a rotation and positioning component, a complete machine frame and an electric control cabinet;

[0007] The cutting and grinding assembly, the rotating and positioning assembly, and the electric control cabinet are fixedly mounted on the complete machine frame;

[0008] The three-station composite auxiliary component is fixedly mounted on the cutting and grinding component;

[0009] The rotary positioning assembly is used to fix the sealed head after the injection molding of the inner liner of the type IV hydrogen storage bottle and drive the sealed head after the injection molding of the inner liner of the type IV hydrogen storage bottle to rotate;

[0010] The cutting and grinding assembly is used for cutting or grinding the end cap of the injection-molded inner liner of a Type IV hydrogen storage bottle;

[0011] The three-station composite auxiliary component includes three switchable separation and pressing components for pressing the end cap cut off from the end cap after injection molding of the inner liner of the type IV hydrogen storage bottle during cutting, a cut end cap picking component for picking up the cut end cap, and an insert picking component for picking up the insert;

[0012] The electric control cabinet is connected with the three-station composite auxiliary component, the cutting and grinding component and the rotation and positioning component through cables.

[0013] The rotary positioning assembly includes a fixed base, a slewing bearing, a hollow support shaft, a three-jaw pneumatic clamp, a support claw, and a separation support shaft rotation drive device; the fixed ring of the slewing bearing is fixedly connected to the fixed base, the bottom of the hollow support shaft is fixedly installed on the movable ring of the slewing bearing, the top of the hollow support shaft is fixedly installed with a three-jaw pneumatic clamp, and support claws are installed at the ends of the three jaws of the three-jaw pneumatic clamp. A separation support shaft for pressing down the separation and pressing assembly during cutting is also fixedly provided on the top of the hollow support shaft; the rotary drive device is used to drive the hollow support shaft to rotate.

[0014] The rotary drive device comprises a servo motor IV fixedly mounted on the fixed base, a small pulley is mounted on the output shaft of the servo motor IV, a large pulley is fixedly connected to the bottom end of the hollow support shaft, and a synchronous belt is mounted on the small pulley and the large pulley.

[0015] The cutting and grinding assembly includes a supporting structure body, a module assembly I, a module assembly II, a servo turntable II, a straight-line workpiece, a cutter and a grinding head. The supporting structure body is fixedly mounted on the whole machine frame, and the module assembly I and the module assembly II for adjusting the vertical and horizontal positions are sequentially mounted on the supporting structure body. The servo turntable II is fixedly mounted on the slider of the module assembly II, and a straight-line workpiece is fixedly mounted on the rotating surface of the servo turntable II. The cutter and the grinding head are respectively mounted on both ends of the straight-line workpiece.

[0016] The grinding head is installed on the straight-line workpiece through an air motor, the air motor is fixedly installed on the straight-line workpiece, and the grinding head is fixedly connected to the output shaft of the air motor.

[0017] An air slip ring for rotationally connecting the air motor with an air source is installed at the center of the servo turntable II.

[0018] The three-station composite auxiliary component includes a servo turntable I, a three-section station bracket, a separation and pressing assembly, a cutting end cover picking assembly and an insert picking assembly; the servo turntable I is fixedly installed on the cutting and grinding assembly, the bottom of the three-section station bracket is fixedly connected to the rotating surface of the servo turntable I, and the separation and pressing assembly, the cutting end cover picking assembly and the insert picking assembly are respectively fixedly connected to the three ends of the three-section station bracket.

[0019] The separation and pressing assembly includes a separation and pressing cylinder, a transition connecting piece and a contour piece II. The separation and pressing cylinder is fixedly installed on the three-equally divided workstation bracket. The telescopic end of the separation and pressing cylinder is rotatably connected with a transition connecting piece through a bearing. The transition connecting piece is fixedly connected with a contour piece II made of non-metal that matches the shape of the top of the end cover.

[0020] The cutting end cap picking assembly includes a cutting end cap picking cylinder and a clamping piece. The cutting end cap picking cylinder is fixedly mounted on the three-equally divided workstation bracket. Three clamping pieces are evenly distributed on the circumference along the center at the telescopic end of the cutting end cap picking cylinder. The clamping piece is mounted on the telescopic end of the cutting end cap picking cylinder through a double guide rod cylinder.

[0021] The insert picking assembly includes an insert picking cylinder, an electromagnet and a contour piece I. The insert picking cylinder is fixedly mounted on the three-equally divided workstation bracket. The telescopic end of the insert picking cylinder is fixedly connected to an electromagnet, and a contour piece I made of non-metal that matches the top shape of the insert is fixedly connected to the electromagnet.

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

[0023] 1. The utility model discloses an automatic cutting and grinding machine for the end cap of a type IV hydrogen storage bottle after injection molding. The automatic cutting and grinding machine for the end cap of a type IV hydrogen storage bottle after injection molding realizes automation and efficiency improvement: Currently, the cutting, grinding and separation of the end cap mainly rely on manual operation, which is not only inefficient but also prone to errors. The automatic cutting and grinding machine realizes the full automation from cutting, grinding to separation of the end cap through integrated design and precise control system, significantly improves production efficiency, and reduces errors caused by human factors.

[0024] 2. The utility model discloses an automatic cutting and grinding machine for the head of a type IV hydrogen storage bottle after injection molding. The automatic cutting and grinding machine for the head of a type IV hydrogen storage bottle after injection molding improves the cutting accuracy and the quality of the incision: manual cutting often makes it difficult to ensure the flatness and accuracy of the incision, while the automatic cutting and grinding machine uses high-precision cutting tools (such as a cutter) and a servo control system, which can accurately control the cutting path and depth, ensure that the incision is smooth and burr-free, and improve the overall quality of the head.

[0025] 3. The utility model discloses an automatic cutting and grinding machine for the end cap of a type IV hydrogen storage bottle after injection molding. The automatic cutting and grinding machine for the end cap of a type IV hydrogen storage bottle after injection molding improves the grinding effect and consistency: the grinding link is also critical, which determines the consistency of the end cap cut and the bottle shoulder position. The automatic grinding head is driven by a pneumatic motor and cooperates with a precise adjustment mechanism to ensure uniform and consistent grinding effects, so that the cut position and the bottle shoulder shape are perfectly matched, thereby improving the aesthetics and sealing performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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.

[0027] In the attached picture:

[0028] Figure 1 It is a three-dimensional structural schematic diagram of an automatic cutting and grinding machine for the head of a type IV hydrogen storage bottle after injection molding according to an embodiment of the utility model;

[0029] Figure 2 It is a three-dimensional structural schematic diagram of an automatic cutting and grinding machine (excluding the protective cover) for the head of a type IV hydrogen storage bottle after injection molding according to an embodiment of the utility model;

[0030] Figure 3 It is a three-dimensional structural schematic diagram of a three-station composite auxiliary component of an automatic cutting and grinding machine for the head of a type IV hydrogen storage bottle after injection molding according to an embodiment of the utility model;

[0031] Figure 4 It is a three-dimensional structural schematic diagram of a cutting and grinding assembly of an automatic cutting and grinding machine for the head of a type IV hydrogen storage bottle after injection molding according to an embodiment of the utility model;

[0032] Figure 5 It is a three-dimensional structural schematic diagram of a rotary positioning assembly of an automatic cutting and grinding machine for the head of a type IV hydrogen storage bottle after injection molding according to an embodiment of the utility model;

[0033] Figure 6 This is a schematic diagram of the structure of the injection-molded inner liner head of a Type IV hydrogen storage bottle before cutting and polishing after injection molding;

[0034] The components represented by the reference numerals in the figure are:

[0035] The utility model: 1. Three-station composite auxiliary component, 2. Cutting and grinding component, 3. Rotation positioning component, 4. Complete machine frame, 5. Electric control cabinet, 6. Insert, 7. End, 8. End cover, 9. Protective cover, 1-1. Double guide rod cylinder, 1-2. Clamping piece, 1-3. Cutting end cover picking cylinder, 1-4. Insert picking cylinder, 1-5. Electromagnet, 1-6. Three-position bracket, 1-7. Separation and pressure removal cylinder, 1-8. Transition connector, 1-9. Dust collection cylinder, 1-10. Servo turntable I, 1-11. Pneumatic slip ring, 1-12. Profiling part I, 1-13, profiling part II, 2-1 servo motor I, 2-2, servo motor II, 2-3, servo turntable II, 2-4, cutter, 2-5, pneumatic motor, 2-6, grinding head, 2-7, servo motor III, 2-8, supporting structure body, 2-9, air slip ring, 2-10, module assembly I, 2-11, module assembly II, 3-1, servo motor IV, 3-2, slewing bearing, 3-3, three-jaw pneumatic clamp, 3-4, support claw, 3-5, separation support shaft, 3-6, fixed base, 3-7, hollow support shaft. DETAILED DESCRIPTION

[0036] like Figure 1 and Figure 2 As shown, the automatic cutting and grinding machine for the head of the injection-molded inner liner of a type IV hydrogen storage bottle includes a three-station composite auxiliary component 1, a cutting and grinding component 2, a rotation and positioning component 3, a complete machine frame 4, an electric control cabinet 5 and a protective cover 9.

[0037] Among them, the whole machine frame 4 is used to install other components and provide installation support for other components; the cutting and grinding component 2, the rotation positioning component 3, and the electric control cabinet 5 are fixedly installed on the whole machine frame 4; the bottom of the whole machine frame 4 is provided with height-adjustable feet for adjusting the level of the equipment.

[0038] The three-station composite auxiliary component 1 is fixedly mounted on the cutting and grinding component 2 .

[0039] The rotation positioning assembly 3 is used to fix the sealed head of the inner liner of the type IV hydrogen storage bottle after injection molding and drive the sealed head of the inner liner of the type IV hydrogen storage bottle to rotate after injection molding.

[0040] The cutting and grinding component 2 is used for cutting or grinding the head of the injection-molded inner liner of the Type IV hydrogen storage bottle. The cutting and grinding component 2 can switch between the cutting function and the grinding function.

[0041] The three-station composite auxiliary component 1 includes three switchable separation and pressing components for pressing down the end cap 8 cut off from the head of the type IV hydrogen storage bottle after injection molding during cutting, a cut end cap picking component for picking up the cut end cap 8, and an insert picking component for picking up the insert 6.

[0042] The protective cover 9 is installed on the whole machine frame 4 to protect other parts.

[0043] The specific working process is as follows: first, use the rotary positioning component 3 to fix and clamp the head 7, and then use the separation and pressing component to press the end cap 8 from above the end cap 8 above the head 7 to prevent the separated end cap 8 from spontaneously flying out without restraint under the action of the rotating centrifugal force during the cutting process, especially after the cutting is completed. Switch the cutting and grinding component to the cutting function, and then start the rotation function of the rotary positioning component. Rotate the head after injection molding of the type IV hydrogen storage bottle liner and cut it. After the cutting is completed, switch the three-station composite auxiliary component 1 to the cutting end cap picking component to pick up the cut end cap 8, and then grind it. After grinding, switch to the insert picking component to pick up the insert 6.

[0044] The electric control cabinet 5 is connected to the three-station composite auxiliary component 1, the cutting and grinding component 2 and the rotating positioning component 3 through cables. One is to provide power to the three-station composite auxiliary component 1, the cutting and grinding component 2 and the rotating positioning component 3, and the other is to control the three-station composite auxiliary component 1, the cutting and grinding component 2 and the rotating positioning component 3 to perform related actions.

[0045] like Figure 5 As shown, the rotary positioning assembly 3 includes a fixed base 3-6, a slewing bearing 3-2, a hollow support shaft 3-7, a three-jaw pneumatic clamp 3-3, a support claw 3-4, and a rotation drive device for separating the support shaft 3-5; the fixed ring of the slewing bearing 3-2 is fixedly connected to the fixed base 3-6, the bottom of the hollow support shaft 3-7 is fixedly installed on the movable ring of the slewing bearing 3-2, and the top of the hollow support shaft 3-7 is fixedly installed with a three-jaw pneumatic clamp 3-3, and the pneumatic clamp 3-3 is connected to the factory air source (not shown in the figure), and the three jaws of the three-jaw pneumatic clamp 3-3 are installed at the ends. The supporting claw 3-4 is made of non-metallic material. When in use, the pneumatic clamp 3-3 is extended so that the supporting claw 3-4 tightly supports the inner wall of the head 7 of the injection-molded head of the type IV hydrogen storage bottle liner, so that it is fixedly connected to the hollow support shaft 3-7. A separation support shaft 3-5 is also fixedly arranged on the top of the hollow support shaft 3-7 for pressing down the separation and pressing assembly during cutting; the rotary drive device is used to drive the hollow support shaft 3-7 to rotate; the injection-molded head of the type IV hydrogen storage bottle liner is cut and polished while rotating as the hollow support shaft 3-7 rotates.

[0046] The rotary drive device includes a servo motor IV3-1 fixedly mounted on the fixed base 3-6, and the servo motor IV3-1 transmits the rotation of its output shaft to the hollow support shaft 3-7 through a transmission system. For example, the transmission system is realized by a small pulley, a large pulley and a synchronous belt. A small pulley is installed on the output shaft of the servo motor IV3-1, and a large pulley is fixedly connected to the bottom end of the hollow support shaft 3-7, and a synchronous belt is installed on the small pulley and the large pulley.

[0047] like Figure 4 As shown, the cutting and grinding assembly 2 includes a supporting structure body 2-8, a module assembly I2-10, a module assembly II2-11, a servo turntable II2-3, a straight-shaped workpiece, a cutter 2-4 and a grinding head 2-6. The supporting structure body 2-8 is fixedly mounted on the whole machine frame 4, and the module assembly I2-10 and the module assembly II2-11 for adjusting the vertical and horizontal positions are sequentially mounted on the supporting structure body 2-8. The module assembly I2-10 and the module assembly II2-11 both include a linear slider and a slider that slide with each other under the drive of a servo motor. The module assembly I2- The linear slide rail of module assembly Ⅰ2-10 is fixed on the supporting structure main body 2-8, the linear slide rail of module assembly Ⅰ2-10 is arranged in a vertical direction, the servo motor Ⅰ2-1 drives the slider of module assembly Ⅰ2-10 to move up and down in the Z-axis direction on the linear slide rail of module assembly Ⅰ2-10, the linear slide rail of module assembly Ⅱ2-11 is fixedly installed on the slider of module assembly Ⅰ2-10, the servo motor Ⅲ2-7 drives the slider of module assembly Ⅱ2-11 to move left and right in the X-axis direction on the linear slide rail of module assembly Ⅱ2-11, and the linear slide rail of module assembly Ⅱ2-11 is arranged in a horizontal direction.

[0048] The servo turntable Ⅱ2-3 is fixedly mounted on the slider of the module assembly Ⅱ2-11, and the servo motor Ⅱ2-2 drives the rotating surface of the servo turntable Ⅱ2-3 to rotate. A straight-line workpiece is fixedly mounted on the rotating surface of the servo turntable Ⅱ2-3, and a cutter 2-4 and a grinding head 2-6 are respectively mounted at both ends of the straight-line workpiece for cutting and grinding operations respectively.

[0049] The shape of the grinding head 2-6 is a customized shape that matches the workpiece to be ground. The grinding head 2-6 is installed on the I-shaped workpiece through the pneumatic motor 2-5. The pneumatic motor 2-5 is fixedly installed on the I-shaped workpiece, and the grinding head 2-6 is fixedly connected to the output shaft of the pneumatic motor 2-5.

[0050] An air slip ring 2-9 for rotationally connecting the air motor 2-5 with the air source is installed at the center position of the servo turntable II 2-3.

[0051] The cutter 2-4 is installed on the I-shaped workpiece through the servo motor II 2-2, the servo motor II 2-2 is fixedly installed on the I-shaped workpiece, and the cutter 2-4 is fixedly connected to the output shaft of the servo motor II 2-2.

[0052] like Figure 3 As shown, the three-station composite auxiliary assembly includes a servo turntable Ⅰ1-10, a three-section station bracket 1-6, a separation and pressing assembly, a cutting end cover picking assembly and an insert picking assembly; the servo turntable Ⅰ1-10 is fixedly mounted on the cutting and grinding assembly 2, specifically, it is fixedly mounted on the supporting structure main body 2-8 by bolts, the bottom of the three-section station bracket 1-6 is fixedly connected to the rotating surface of the servo turntable Ⅰ1-10, and the separation and pressing assembly, the cutting end cover picking assembly and the insert picking assembly are respectively fixedly connected to the three ends of the three-section station bracket 1-6; an air-electric slip ring 1-11 is installed at the center position of the three-section station bracket 1-6 for providing a rotational connection for compressed air and detection signals.

[0053] The separation and pressing assembly includes a separation and pressing cylinder 1-7, a transition connector 1-8 and a profiling member II1-13. The separation and pressing cylinder 1-7 is fixedly mounted on the three-equally divided workstation bracket 1-6. Two sets of guide shafts and sleeves are mounted at both ends of the separation and pressing cylinder 1-7 parallel to the cylinder output axis direction. A transition connector 1-8 made of metal is rotatably connected to the telescopic end of the separation and pressing cylinder 1-7 through a bearing. A non-metallic profiling member II1-13 matching the top shape of the end cover 8 is fixedly connected to the transition connector 1-8. The profiling member II1-13 is used to reduce the damage to the head caused by excessive pressure generated during pressing during downward cutting or grinding. A dust collection cylinder 1-9 made of sheet metal bent and welded is arranged on the upper side of the transition connector 1-8. A vacuum cleaner is arranged on the dust collection cylinder 1-9 to suck away waste chips generated during cutting and grinding.

[0054] The cutting end cap picking assembly includes a cutting end cap picking cylinder 1-3 and a clamping member 1-2. The cutting end cap picking cylinder 1-3 is fixedly mounted on the three-equally divided workstation bracket 1-6. Two sets of guide shafts and bushings are installed at both ends of the cutting end cap picking cylinder 1-3 parallel to the cylinder output axis direction. Three clamping members 1-2 are evenly distributed on the circumference along the center at the telescopic end of the cutting end cap picking cylinder 1-3. The clamping member 1-2 is installed on the telescopic end of the cutting end cap picking cylinder 1-3 through a double guide rod cylinder 1-1. The shape of the clamping member 1-2 is adapted to the end cap 8. When the three clamping members 1-2 retract toward the center of the circumference, the cut end cap 8 can be dragged.

[0055] The insert picking assembly includes an insert picking cylinder 1-4, an electromagnet 1-5 and a profiling member Ⅰ1-12. The insert picking cylinder 1-4 is fixedly mounted on the three-equally divided workstation bracket 1-6. Two sets of guide shafts and bushings are mounted at both ends of the insert picking cylinder 1-4 parallel to the cylinder output axis direction. The telescopic end of the insert picking cylinder 1-4 is fixedly connected with the electromagnet 1-5. A non-metallic profiling member Ⅰ1-12 matching the top shape of the insert 6 is fixedly connected to the electromagnet 1-5. The non-metallic profiling member Ⅰ1-12 is used to prevent surface wear during the insert picking process.

[0056] The automatic cutting and grinding machine for the end caps of type IV hydrogen storage bottle liners after injection molding uses multiple sets of servo precision positioning structures, cutting blades and customized grinding heads driven by pneumatic motors to achieve multiple functions such as automatic cutting of various end caps of type IV bottle liners, automatic removal of inserts, automatic separation of inserts and ends, automatic grinding, automatic collection of grinding droplets and automatic removal of cutting waste. The equipment is suitable for the following head size range: diameter φ200mm-φ400mm, length 400mm-835mm.

[0057] The automatic cutting and grinding machine for the end caps of the type IV hydrogen storage bottle after injection molding uses the internal program of the PLC to accurately control the movement position of the cutter and the grinding head, and cooperates with the servo rotation of the equipment itself to complete the automatic cutting and automatic grinding of the end caps. The servo turntable on the upper part of the equipment forms multiple workstations that precisely cooperate with the lower part to complete automatic inlet separation, automatic removal of the end caps, automatic picking of inlets and other actions. Formulas for products of different specifications are set in the equipment control system. One formula corresponds to the parameters 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.

Claims

1. An automatic cutting and grinding machine for the end cap of a type IV hydrogen storage bottle after injection molding, characterized in that: It comprises a three-station composite auxiliary component (1), a cutting and grinding component (2), a rotation positioning component (3), a complete machine frame (4) and an electric control cabinet (5); The cutting and grinding assembly (2), the rotation positioning assembly (3), and the electric control cabinet (5) are fixedly mounted on the complete machine frame (4); The three-station composite auxiliary component (1) is fixedly mounted on the cutting and grinding component (2); The rotation positioning assembly (3) is used to fix the sealed head of the inner liner of the type IV hydrogen storage bottle after injection molding and drive the sealed head of the inner liner of the type IV hydrogen storage bottle to rotate after injection molding; The cutting and grinding component (2) is used for cutting or grinding the end cap of the injection-molded inner liner of a type IV hydrogen storage bottle; The three-station composite auxiliary component (1) comprises three switchable separation and pressing components for pressing the end cap (8) cut off from the end cap after injection molding of the inner liner of the type IV hydrogen storage bottle during cutting, a cut end cap picking component for picking up the cut end cap (8), and an insert picking component for picking up the insert (6); The electric control cabinet (5) is connected to the three-station composite auxiliary component (1), the cutting and grinding component (2) and the rotation positioning component (3) via cables.

2. According to claim 1, the automatic cutting and grinding machine for the head of the IV-type hydrogen storage bottle after injection molding is characterized in that: The rotary positioning assembly (3) comprises a fixed base (3-6), a slewing bearing (3-2), a hollow support shaft (3-7), a three-claw pneumatic clamp (3-3), a support claw (3-4), a separation support shaft (3-5) and a rotation drive device; the fixed ring of the slewing bearing (3-2) is fixedly connected to the fixed base (3-6), the bottom of the hollow support shaft (3-7) is fixedly mounted on the movable ring of the slewing bearing (3-2), the top of the hollow support shaft (3-7) is fixedly mounted with a three-claw pneumatic clamp (3-3), the ends of the three clamps of the three-claw pneumatic clamp (3-3) are mounted with a support claw (3-4), and the top of the hollow support shaft (3-7) is also fixedly provided with a separation support shaft (3-5) for pressing down the separation and pressing assembly during cutting; the rotary drive device is used to drive the hollow support shaft (3-7) to rotate.

3. According to claim 2, the automatic cutting and grinding machine for the head of the IV-type hydrogen storage bottle after injection molding is characterized in that: The rotary drive device comprises a servo motor IV (3-1) fixedly mounted on the fixed base (3-6), a small pulley being mounted on the output shaft of the servo motor IV (3-1), a large pulley being fixedly connected to the bottom end of the hollow support shaft (3-7), and a synchronous belt being mounted on the small pulley and the large pulley.

4. According to claim 1, the automatic cutting and grinding machine for the head of the IV-type hydrogen storage bottle after injection molding is characterized in that: The cutting and grinding assembly (2) comprises a supporting structure body (2-8), a module assembly I (2-10), a module assembly II (2-11), a servo turntable II (2-3), a straight-shaped workpiece, a cutter (2-4) and a grinding head (2-6); the supporting structure body (2-8) is fixedly mounted on a whole machine frame (4); a module assembly I (2-10) and a module assembly II (2-11) for adjusting vertical and horizontal positions are sequentially mounted on the supporting structure body (2-8); the servo turntable II (2-3) is fixedly mounted on a slider of the module assembly II (2-11); a straight-shaped workpiece is fixedly mounted on a rotating surface of the servo turntable II (2-3); and a cutter (2-4) and a grinding head (2-6) are respectively mounted on both ends of the straight-shaped workpiece.

5. According to claim 4, the automatic cutting and grinding machine for the head of the IV-type hydrogen storage bottle after injection molding is characterized in that: The grinding head (2-6) is mounted on the straight-line workpiece via an air motor (2-5); the air motor (2-5) is fixedly mounted on the straight-line workpiece; and the grinding head (2-6) is fixedly connected to an output shaft of the air motor (2-5).

6. According to claim 5, the automatic cutting and grinding machine for the head of the IV-type hydrogen storage bottle after injection molding is characterized in that: An air slip ring (2-9) for rotationally connecting the air motor (2-5) and the air source is installed at the center of the servo turntable II (2-3).

7. According to claim 1, the automatic cutting and grinding machine for the head of the IV-type hydrogen storage bottle after injection molding is characterized in that: The three-station composite auxiliary component comprises a servo turntable I (1-10), a three-section station bracket (1-6), a separation and pressing assembly, a cutting end cover picking assembly and an insert picking assembly; the servo turntable I (1-10) is fixedly mounted on the cutting and grinding assembly (2), the bottom of the three-section station bracket (1-6) is fixedly connected to the rotating surface of the servo turntable I (1-10), and the separation and pressing assembly, the cutting end cover picking assembly and the insert picking assembly are respectively fixedly connected to the three ends of the three-section station bracket (1-6).

8. According to claim 7, the automatic cutting and grinding machine for the head of the IV-type hydrogen storage bottle after injection molding is characterized in that: The separation and pressing assembly comprises a separation and pressing cylinder (1-7), a transition connecting piece (1-8) and a profiling piece II (1-13); the separation and pressing cylinder (1-7) is fixedly mounted on the three-equally divided workstation bracket (1-6); the transition connecting piece (1-8) is rotatably connected to the telescopic end of the separation and pressing cylinder (1-7) via a bearing; and the non-metallic profiling piece II (1-13) matching the shape of the top of the end cover (8) is fixedly connected to the transition connecting piece (1-8).

9. The automatic cutting and grinding machine for the head of a type IV hydrogen storage bottle after injection molding according to claim 7, characterized in that: The cutting end cap picking assembly comprises a cutting end cap picking cylinder (1-3) and a clamping piece (1-2); the cutting end cap picking cylinder (1-3) is fixedly mounted on the three-equally divided workstation bracket (1-6); three clamping pieces (1-2) are evenly distributed along the center on the telescopic end of the cutting end cap picking cylinder (1-3); the clamping piece (1-2) is mounted on the telescopic end of the cutting end cap picking cylinder (1-3) via a double guide rod cylinder (1-1).

10. The automatic cutting and grinding machine for the end cap of the injection-molded inner liner of a type IV hydrogen storage bottle according to claim 7, characterized in that: The insert picking assembly comprises an insert picking cylinder (1-4), an electromagnet (1-5) and a profiling member I (1-12); the insert picking cylinder (1-4) is fixedly mounted on the three-equally divided workstation bracket (1-6); the telescopic end of the insert picking cylinder (1-4) is fixedly connected to the electromagnet (1-5); and the profiling member I (1-12) made of non-metal and matching the top shape of the insert (6) is fixedly connected to the electromagnet (1-5).

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