Blank moving blow molding method

Abstract

According to the blank moving blow molding method, a left mold and a right mold are arranged in the center of a molding machine base in a relative moving mode, and a lifting loading table is arranged below the mold closing center of the left mold and the right mold; a liquid collector, a GVV gravity valve, a supporting column and a washboard with a built-in pipeline are integrally connected to a movable seat of the washboard conveying track in a penetrating mode through a washboard penetrating rod, and a clamping jaw of the washboard loading manipulator grabs the washboard penetrating rod on the movable seat and sends the washboard penetrating rod to the lifting loading table to be inserted and positioned; the hand end of the blank moving manipulator is connected with a blank moving clamping frame, two moving clamping seats are arranged on the blank moving clamping frame, and the outer ends of blank moving clamping rods on the moving clamping seats are connected with blank moving chucks. According to the blow molding machine, the initial parison extruded by the extrusion die head is conveyed to the die closing center of the left die and the right die through the blank moving manipulator, the washboard is clamped by combining the washboard loading manipulator and is fed into the washboard integrated with all the components through the lifting loading table, integral blow molding of the washboard and all the components in the initial parison is integrally completed, and the blow molding efficiency and quality are high.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel tanks, and the present invention relates to a method for moving blank blow molding. Background Art

[0002] With the implementation of the National VI emission standard stage b, the control requirements for fuel evaporation emissions have been significantly improved. Traditional fuel vehicles rely on carbon cans to adsorb steam, but the capacity of carbon cans is limited. High-pressure fuel tanks achieve dynamic steam sealing and directional emission through structural reinforcement and intelligent valve linkages such as FTIV isolation valves, breaking through the adaptation bottleneck of atmospheric pressure fuel tanks for hybrid vehicle models. In the existing high-pressure fuel tank structures, anti-surge plates, liquid collectors, various exhaust valves, pipelines and other components are built-in. During the blow molding production of the fuel tank, these components are all directly integrally blow molded and connected to the inner wall of the tank body. During the blow molding operation, each component needs to be individually loaded, which affects the blow molding time and efficiency. The loading time of too many components is relatively long, which is extremely likely to affect the temperature of the blow molding material and subsequent molding. At the same time, connecting a relatively large number of components to the inner wall of the high-pressure fuel tank has a great impact on the overall thickness of the fuel tank and the thickness and strength of the connection parts, which is not conducive to the stability of the blow molding quality of the high-pressure fuel tank. Summary of the Invention

[0003] The present invention provides a method for moving blank blow molding with convenient operation and high blow molding quality.

[0004] The technical solution adopted by the present invention is: a method for a moving blank blow molding machine, characterized in that: the blow molding machine includes a plastic mold machine base and an extrusion die head. Left and right molds are arranged on the plastic mold machine base to move forward and backward relatively or oppositely at the center. It is characterized in that: a lifting loading table that can be pneumatically or hydraulically lifted is further arranged at the center of the plastic mold machine base below the mold closing center of the left and right molds, and loading positioning holes are arranged on the lifting loading table; it also includes an anti-surge plate loading device and a blank moving device. The anti-surge plate loading device includes an anti-surge plate loading manipulator, an anti-surge plate conveying track and an anti-surge plate piercing rod. A moving positioning hole is arranged on the moving seat of the anti-surge plate conveying track. The lower part of the anti-surge plate piercing rod is a positioning section, and the cross section of the positioning section is fixedly inserted and non-rotating corresponding to the loading positioning hole and the moving positioning hole. The upper part of the anti-surge plate piercing rod is a piercing section for piercing the anti-surge plate integrally integrated with a liquid collector, a GV gravity valve and a support column. The clamping jaws of the anti-surge plate loading manipulator are in a state of grasping the anti-surge plate piercing rod on the moving seat and sending it to the lifting loading table and inserting it into the loading positioning hole corresponding to the clamping section in the middle of the anti-surge plate piercing rod. The blank moving device includes a blank moving manipulator, a blank moving clamping frame, a moving clamping seat, a blank moving clamping rod and a blank moving chuck. The end of the hand part of the blank moving manipulator is connected to the blank moving clamping frame. Two moving clamping seats that are pneumatically guided to move relatively or oppositely are arranged on the blank moving clamping frame. The blank moving clamping rod is vertically connected to the moving clamping seat. The outer end of the blank moving clamping rod is connected to the blank moving chuck. The blank moving chuck moves with the blank moving manipulator to correspondingly clamp the initial parison extruded by the extrusion die head to the mold closing center of the left and right molds or corresponding above the loading positioning hole. The blow molding method includes the following steps: (1) Initial position: The left and right molds are separated on the mold base of the molding machine, and the lifting loading table in the middle position sinks. (2) Loading of the anti-wave plate: The anti-wave plate integrated with the liquid collector, GVV gravity valve, support column and internal pipeline is inserted through the holes on the anti-wave plate and set on the connecting section at the upper part of the connecting rod of the anti-wave plate on the moving seat of the anti-wave plate conveying track. The connecting rod of the anti-wave plate moves with the moving seat to within the stroke range of the anti-wave plate loading manipulator. The anti-wave plate manipulator rotates to the middle of the connecting rod of the anti-wave plate and clamps the clamping section in the middle of the connecting rod of the anti-wave plate with the clamping jaw. The positioning section at the lower part of the connecting rod of the anti-wave plate is pulled out of the moving positioning hole of the moving seat, and is transferred to the corresponding loading positioning hole above the lifting loading table by the anti-wave plate manipulator. The positioning section at the lower part of the connecting rod of the anti-wave plate is inserted into the loading positioning hole, and the anti-wave plate manipulator resets. (3) Loading of the blank transfer: The extrusion die head extrudes the initial parison. The blank transfer manipulator drives the blank transfer chuck on the blank transfer clamping frame to correspond to the upper opening position of the initial parison. Control the relative movement of the moving clamping seat so that the blank transfer clamping rod drives the blank transfer chuck to be centered and clamped. After the middle clamping plate on the inner side of the chuck seat of the blank transfer chuck and the rotating clamping plates on both sides are pneumatically controlled to rotate, the two blank transfer chucks are centered and closed to cut off the initial parison below the extrusion die head, and the initial parison is vacuum sucked tightly by the vacuum suction port. Driven by the blank transfer manipulator, the clamped initial parison is moved to the center position of the mold closing of the left and right molds, and faces downwards corresponding to the anti-wave plate. (4) Mold closing: Control the lifting loading table to rise and drive the anti-wave plate to be fed in from the lower opening of the initial parison, then control the left and right molds to close on the mold base of the molding machine. The upper ejector pins on the left and right molds correspond to the ejector pins of the initial parison to press the inner wall against the support column of the anti-wave plate, positioning the initial parison and the anti-wave plate. At the same time, link the lifting loading table to descend, and the anti-wave plate is withdrawn from the connecting section of the connecting rod of the anti-wave plate and descends. When the left and right molds are completely closed, the connecting rod of the anti-wave plate is completely withdrawn; the blank transfer manipulator releases the clamping of the initial parison and resets. (5) Blow molding: After the left and right molds are closed, a blow molding head corresponding to the fuel pump assembly port position on the initial parison extends from the left mold or the right mold for blow molding operation. After blow molding, the left and right molds are water-cooled, demolded, and the high-pressure fuel tank is automatically unloaded and formed.

[0005] Further, the blank transfer chuck includes a chuck seat, the chuck seat is connected to the moving clamping rod, the chuck seat is provided with a middle clamping plate on the inner side, and rotating clamping plates are respectively arranged on both sides of the middle clamping plate. The rotating clamping plates are rotatably hinged on the chuck seat and are in a state of rotating from the outside to the middle inside around the hinge point by the pneumatic push rod, or the inner ends of the rotating clamping plates are connected to the rotating cylinders fixed on the chuck seat and are in a state of rotating from the outside to the middle inside around the rotating cylinders driven by the rotating cylinders. A plurality of vacuum suction ports facing the inside are arranged on the rotating clamping plates and the middle clamping plate.

[0006] Further, a blank transfer track vertically facing the plastic mold base is provided below the blank transfer manipulator, and the blank transfer manipulator is arranged on the blank transfer track through a manipulator track base; in step (3), while the blank transfer manipulator rotates itself, the manipulator track base at the bottom of the blank transfer manipulator moves on the blank transfer track towards the plastic mold base and approaches it.

[0007] Further, the blank transfer manipulator is arranged on a side different from that of the plastic mold base and the wave baffle loading device.

[0008] Further, the lifting and transfer table's lifting control is linked with the mold closing control of the left and right molds on the plastic mold base.

[0009] Further, ejector pins corresponding to the support columns are arranged in the mold cavities of the left and right molds, and the ejector pins are telescopic control structures on the left and right molds in the direction towards the support columns; a blow molding head corresponding to the fuel pump assembly port is arranged in the mold cavity of the left mold or the right mold.

[0010] Further, after the middle clamping plate and the rotating clamping plates on both sides of the two blank transfer chucks jointly act to suck and clamp and cut off the initial parison under the extrusion die head and then cut it off, the blank transfer chucks move outward in opposite directions on the blank transfer clamping frame, driving the initially compressed and contracted parison to expand outward during cutting.

[0011] The beneficial effects of the present invention are as follows: Components such as a pre - installed liquid collector, a GVV gravity valve, a support column, and an internal pipeline are integrally integrated on the wave baffle. By positioning on the wave baffle connecting rod on the moving seat of the wave baffle conveying track, it is moved to the position of the wave baffle manipulator, and the manipulator claw grabs the wave baffle connecting rod and sends it to the lifting loading table below the center of the left and right molds for positioning; in combination, the blank transfer manipulator correspondingly sends the blank transfer chucks to the upper mouth position of the extrusion die head to extrude the comfortable parison. Through the alignment and clamping of the middle clamping plate of the two blank transfer chucks and the rotational clamping of the rotating clamping plates on both sides, and then cooperating with the vacuum suction ports of the middle clamping plate and the rotating clamping plates to suck and hold tightly, the six - sided cutting of the upper mouth of the initial parison is completed. According to different blow molding sizes, the initial parison can be expanded by sucking and expanding the blank transfer chucks; the blank transfer manipulator directly rotates above the lifting loading table below the center of the left and right molds, or drives the movement in combination with the blank transfer track, and sends the initial parison to the center of the left and right molds, which can avoid the problem that the components sent in are damaged due to excessive internal temperature when the initial parison is directly driven by the extrusion die head to the inside of the left and right molds. After the initial parison is cut off and sent between the left and right molds, the internal temperature is appropriately reduced. After the wave baffle is sent in, it can ensure that it is not damaged by the influence of excessive temperature, improving the subsequent blow molding quality; the blow molding is completed by positioning and tightly pressing the support column and the blow molding head through the fuel pump assembly port of the initial parison. The liquid collector, GVV gravity valve, support column, and internal pipeline integrated on the wave baffle are not integrally blow - molded and connected to the inner wall of the initial parison, which can greatly reduce the uneven thickness of the inner wall caused by too many components connected to the inner wall of the initial parison and comprehensively improve the cooling of the blow molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic top view structure diagram of the present invention; Figure 2 is Figure 1 Schematic structure diagram of the moving billet manipulator A in the middle; Figure 3 is Figure 1 Schematic structure diagram of the anti-wave plate manipulator B in the middle; Figure 4 Schematic structure diagram of the anti-wave plate connecting rod passing through the anti-wave plate.

[0013] In the figure: plastic mold base 1, left mold 2, right mold 3, ejector pin 4, blow molding head 5, lifting loading table 6, loading positioning hole 7, anti-wave plate loading manipulator 8, clamping jaw 9, anti-wave plate conveying track 10, moving seat 11, moving positioning hole 12, anti-wave plate connecting rod 13, connecting section 14, clamping section 15, positioning section 16, anti-wave plate 17, anti-wave plate connection port 18, support column 19, liquid collector 20, GVV gravity valve 21, billet moving manipulator 22, billet moving clamping frame 23, moving clamping seat 24, billet moving clamping rod 25, billet moving clamping head 26, clamping head seat 27, intermediate clamping plate 28, rotary cylinder 29, rotary clamping plate 30, vacuum suction head 31, billet moving track 32, manipulator track seat 33, extrusion die head 34. DETAILED DESCRIPTION OF THE INVENTION

[0014] The following is further described with reference to the accompanying drawings.

[0015] Figures 1-4 As shown, a billet moving blow molding machine includes a plastic mold base 1, a left mold 2, a right mold 3, a lifting loading table 6, an anti-wave plate loading manipulator 8, a clamping jaw 9, an anti-wave plate conveying track 10, a moving seat 11, an anti-wave plate connecting rod 13, a billet moving manipulator 22, a billet moving clamping frame 23, a moving clamping seat 24, a billet moving clamping rod 25, a billet moving clamping head 26, a clamping head seat 27, an intermediate clamping plate 28, a rotary cylinder 29, a rotary clamping plate 30, a vacuum suction head 31, a billet moving track 32, a manipulator track seat 33, and an extrusion die head 34.

[0016] As Figure 4 shown, an anti-wave plate 17 is arranged inside the blow molding machine, and an anti-wave plate connection port 18 is provided on the anti-wave plate 17. A plurality of support columns 19 are integrally pre-installed on the anti-wave plate 17, and a liquid collector 20 and more than one GV gravity valve 21 are installed.

[0017] On the plastic molding machine base 1, the left and right molds 2 and 3 are arranged to move forward and backward relatively or oppositely at the center. In the inner cavities of the left and right molds 2 and 3, ejector pins 4 corresponding to the telescopic support columns 19 are provided. In any one of the molds, a blow molding head 5 for blowing corresponding to the fuel pump assembly port of the blow molding high-pressure fuel tank is also provided. At the center of the plastic molding machine base 1, a lifting loading table 6 that can be pneumatically or hydraulically lifted and lowered is also provided below the center of the left and right molds when they are closed. Loading positioning holes 7 are provided on the lifting loading table 6.

[0018] On one side of the plastic molding base 1, a wave guard loading manipulator 8 and a wave guard conveying track 10 are provided. A moving positioning hole 12 is provided on the moving seat 11 of the wave guard conveying track 10. The lower part of the wave guard connecting rod 13 is a positioning section 16. The cross-section of the positioning section 16 is fixedly inserted and non-rotating corresponding to the loading positioning hole 7 and the moving positioning hole 12. The upper part of the wave guard connecting rod 13 is a connecting section 14 of the wave guard 17 with an integrated liquid collector, GVV gravity valve, support column and internal pipeline at the wave guard connection port 18. The clamping jaws 9 of the wave guard loading manipulator 8 are in a state of grasping the wave guard connecting rod on the moving seat and sending it to the lifting loading table and inserting it into the loading positioning hole corresponding to the clamping section 15 in the middle of the wave guard connecting rod 12.

[0019] On the other side of the plastic molding base 1, an extrusion die head 34 and a blank transfer track 32 are correspondingly provided. The blank transfer track 32 is arranged perpendicular to the mold closing direction of the plastic molding base 1. A manipulator track seat 33 is movably arranged on the blank transfer track 32. A blank transfer manipulator 22 is provided on the manipulator track seat 33. The end of the hand of the blank transfer manipulator 22 is connected to a blank transfer clamping frame 23. Two moving clamping seats 24 that are pneumatically guided to move relatively or oppositely are provided on the blank transfer clamping frame 23. A blank transfer clamping rod 25 is vertically connected to the moving clamping seat 24. The outer end of the blank transfer clamping rod 25 is connected to a blank transfer chuck 26. The chuck seat 27 of the blank transfer chuck 26 is connected to the moving clamping rod 25. An intermediate clamping plate 28 is arranged on the inner side of the chuck seat 27. Rotating clamping plates 30 are respectively arranged on both sides of the intermediate clamping plate 28. The inner end of the rotating clamping plate 30 is connected to a rotating cylinder 29 fixed on the chuck seat and is in a state of being driven by the rotating cylinder to rotate from the outside to the inside middle around the rotating cylinder. A plurality of inward vacuum suction ports 31 are provided on the rotating clamping plate and the intermediate clamping plate.

[0020] In this embodiment, the lifting control of the lifting transfer table is linked with the mold closing control of the left and right molds on the plastic molding machine base.

[0021] A blank transfer blow molding method of a blank transfer blow molding machine includes the following steps: (1) Initial position: The left and right molds 2 and 3 are separated on the plastic molding machine base 1, and the lifting loading table 6 in the middle position sinks; (2)Wave baffle loading: The wave baffle 17 integrated with a liquid collector, a GVV gravity valve, support columns, and internal pipelines is correspondingly inserted through the wave baffle through-hole 18 on the wave baffle 17 onto the connection section 14 at the upper part of the wave baffle connection rod 13 on the moving seat 11 of the wave baffle conveying track 10. The wave baffle connection rod 13 moves with the moving seat 11 to within the stroke range of the wave baffle loading manipulator 8. The wave baffle manipulator 8 rotates to the middle of the wave baffle connection rod 13 and clamps the clamping section 15 in the middle of the wave baffle connection rod 13 through the clamping jaws 9. The positioning section 16 at the lower part of the wave baffle connection rod 13 is pulled out of the moving positioning hole 12 of the moving seat 11, and then is transferred by the wave baffle manipulator 8 to above the lifting loading table 6 corresponding to the loading positioning hole 7. The positioning section 16 at the lower part of the wave baffle connection rod 13 is inserted into the loading positioning hole 7, and the wave baffle manipulator 8 resets. (3)Parison loading: The extrusion die head 34 extrudes the initial parison. The parison manipulator 22 drives the parison clamping jaws 26 on the parison clamping frame 23 to move to the upper mouth position of the initial parison correspondingly. The relative movement of the moving clamping seat 24 is controlled so that the parison clamping rod 25 drives the parison clamping jaws 26 to be centered and clamped. After the middle clamping plate 28 and the two side rotating clamping plates 30 on the inner side of the chuck seat 27 of the parison clamping jaws 26 are pneumatically controlled to rotate, the two parison clamping jaws are centered and closed to cut off the initial parison below the extrusion die head, and the initial parison is vacuum sucked tightly by the vacuum suction port 31. Driven by the parison manipulator 22, the clamped initial parison is moved to the mold closing center position between the left and right molds 2 and 3, facing downwards corresponding to the wave baffle 17. After the middle clamping plate and the two side rotating clamping plates of the two parison clamping jaws jointly act to suck tightly and cut off the initial parison below the extrusion die head and cut it off, the parison clamping jaws move outwards away from each other on the parison clamping frame, driving the initial parison that is compressed and contracted during clamping to expand outwards. According to different blow molding sizes, the initial parison can be expanded by sucking and expanding tightly by the parison clamping jaws. (4)Mold closing: After controlling the lifting loading table 6 to rise and drive the wave baffle 17 to be fed in from the lower mouth of the initial parison, the left and right molds 2 and 3 are controlled to close on the plastic molding machine base 1. The ejector pins 4 on the left and right molds 2 and 3 correspondingly eject and position the initial parison so that the inner wall of the initial parison is pressed against the support columns 18 of the wave baffle 17, positioning the initial parison and the wave baffle. At the same time, the lifting loading table 6 is linked to descend, and the wave baffle 17 is withdrawn from the connection section 14 of the wave baffle connection rod 13 and descends. When the left and right molds 2 and 3 complete mold closing, the wave baffle connection rod 13 completely withdraws; the parison manipulator 22 releases the clamping of the initial parison and resets. (5)Blow molding: After the left and right molds 2 and 3 are closed, a blow molding head 5 correspondingly extends from the left mold or the right mold to the position of the fuel pump assembly port on the initial parison for blow molding operations. After blow molding, the left and right molds are water-cooled, demolded, and automatically unloaded to form a high-pressure fuel tank.

[0022] In this embodiment, the movement of the parison manipulator 22 towards the plastic molding base 1 is completed by the movement of the manipulator track seat 33 at its bottom on the parison track 32.

[0023] In this embodiment, the lifting of the lifting loading table, the telescoping of the top column, the telescoping of the left and right molds, the rotation of the rotating clamping plate, and the moving of the moving clamping seat towards or away from each other on the moving clamping frame are all prior arts, and there are similar pneumatic, electric or lead screw drive control structures in the prior arts, which will not be elaborated in this embodiment.

Claims

1. A method for a parison blowing machine, characterized in that: The blow molding machine includes a plastic molding machine base and an extrusion die head. On the plastic molding machine base, left and right molds are arranged to move forward relatively or oppositely at the center. It is characterized in that: a lifting loading table that can be pneumatically or hydraulically lifted is also arranged at the center of the plastic molding machine base, below the mold closing center of the left and right molds. Loading positioning holes are arranged on the lifting loading table; a wave baffle loading device and a blank transfer device are also included. The wave baffle loading device includes a wave baffle loading manipulator, a wave baffle conveying track, and a wave baffle connecting rod. A moving positioning hole is arranged on the moving seat of the wave baffle conveying track. The lower part of the wave baffle connecting rod is a positioning section. The cross-section of the positioning section is fixedly inserted into the loading positioning hole and the moving positioning hole in a non-rotating state. The upper part of the wave baffle connecting rod is a connecting section for connecting the wave baffle integrated with a liquid collector, a GVV gravity valve, a support column, and an internal pipeline. The jaws of the wave baffle loading manipulator correspond to the clamping section in the middle of the wave baffle connecting rod and are in a state of grasping the wave baffle connecting rod on the moving seat and sending it to the lifting loading table and inserting it into the loading positioning hole. The blank transfer device includes a blank transfer manipulator, a blank transfer clamping frame, a moving clamping seat, a blank transfer clamping rod, and a blank transfer chuck. The end of the hand of the blank transfer manipulator is connected to the blank transfer clamping frame. Two moving clamping seats that are pneumatically guided to move relatively or oppositely are arranged on the blank transfer clamping frame. The blank transfer clamping rod is vertically connected to the moving clamping seat. The outer end of the blank transfer clamping rod is connected to the blank transfer chuck. The blank transfer chuck moves with the blank transfer manipulator and correspondingly clamps the initial parison extruded by the extrusion die head to the mold closing center of the left and right molds or above the loading positioning hole correspondingly; Its blow molding method includes the following steps: (1) Initial position: The left and right molds are separated on the plastic molding machine base, and the lifting loading table in the middle position sinks; (2) Wave baffle loading: The wave baffle integrated with a liquid collector, a GV gravity valve, and a support column is correspondingly inserted into the connecting section at the upper part of the wave baffle connecting rod on the moving seat of the wave baffle conveying track through the hole positions on the wave baffle. The wave baffle connecting rod moves with the moving seat to within the stroke range of the wave baffle loading manipulator. The wave baffle manipulator rotates to the middle of the wave baffle connecting rod and clamps the clamping section in the middle of the wave baffle connecting rod with the jaws, pulls out the positioning section at the lower part of the wave baffle connecting rod from the moving positioning hole of the moving seat, rotates with the wave baffle manipulator to above the lifting loading table corresponding to the loading positioning hole, inserts the positioning section at the lower part of the wave baffle connecting rod into the loading positioning hole, and the wave baffle manipulator resets; (3) Blank transfer loading: The extrusion die head extrudes the initial parison. The blank transfer manipulator drives the blank transfer chuck on the blank transfer clamping frame to the upper mouth position of the initial parison correspondingly. Control the relative movement of the moving clamping seats so that the blank transfer clamping rod drives the blank transfer chuck to clamp in the center. After the middle clamping plate and the two rotating clamping plates on both sides of the chuck seat of the blank transfer chuck are pneumatically controlled to rotate, the two blank transfer chucks close in the center to cut off the initial parison under the extrusion die head, and combine with the vacuum suction port to vacuum suck and tighten the initial parison. Driven by the blank transfer manipulator, the clamped initial parison is moved to the mold closing center position of the left and right molds and faces downward corresponding to the wave baffle; (4) Mold closing: After the lifting loading platform is controlled to rise and drive the wave-breaking plate to be fed in from the lower opening of the initial blank, the left and right molds are controlled to close the molds on the mold base. The upper columns of the left and right molds correspond to the initial blanks of the upper columns so that their inner walls are pressed against the supporting columns of the wave-breaking plate, and the initial blanks and the wave-breaking plate are positioned. At the same time, the lifting loading platform is linked to descend, and the wave-breaking plate is withdrawn from the connecting section of the wave-breaking plate connecting rod and descends. When the left and right molds are closed, the wave-breaking plate connecting rod is completely withdrawn; the blank transfer robot releases the clamping of the initial blank and resets; (5) Blow molding: After the left and right molds are closed, the corresponding blow molding head on the left or right mold is extended to perform blow molding at the fuel pump assembly port on the initial parison. After blow molding, the left and right molds are water-cooled, separated, and automatically unloaded to form the high-pressure fuel tank.

2. The billet transfer blow molding method according to claim 1, characterized in that: The blank transferring chuck comprises a chuck seat, which is connected to a movable clamping rod, an intermediate clamping plate is arranged inwardly of the chuck seat, and rotating clamping plates are arranged on both sides of the intermediate clamping plate. The rotating clamping plate is rotatably hinged on the chuck seat and is in a state of rotating from the outside to the middle of the inside around a hinge point driven by a pneumatic push rod, or the inner end of the rotating clamping plate is connected to a rotating cylinder fixed on the chuck seat and is in a state of rotating from the outside to the middle of the inside around the rotating cylinder driven by the rotating cylinder, and a plurality of vacuum suction ports facing inward are arranged on the rotating clamping plate and the intermediate clamping plate.

3. A blank transfer blow molding method according to claim 1, characterized in that: The blank-moving robot is provided with a blank-moving track perpendicular to the mold base, and the blank-moving robot is arranged on the blank-moving track via a robot track seat; in the step (3), while the blank-moving robot is rotating, the robot track seat at the bottom of the blank-moving robot moves on the blank-moving track toward the mold base.

4. A blank transfer blow molding method according to claim 1 or 3, characterized in that: The blank-moving robot is arranged on a side different from the mold base and the wave-breaking plate loading device.

5. A blank transfer blow molding method according to claim 1, characterized in that: The lifting and lowering control of the lifting transfer platform is linked with the mold closing control of the left and right molds on the mold machine base.

6. A blank transfer blow molding method according to claim 1, characterized in that: A top column corresponding to the support column is arranged in the mold cavity of the left and right molds, and the top column is a telescopic control structure toward the support column on the left and right molds; a blow molding head corresponding to the fuel pump assembly port is arranged in the mold cavity of the left mold or the right mold.

7. A blank transfer blow molding method according to claim 1, characterized in that: In the step (3), the middle clamping plates of the two blank transfer chucks and the rotating clamping plates on both sides work together to clamp the extrusion die head to suck and clamp the initial blank. After the initial blank is clamped, the blank transfer chucks move outward in opposite directions on the blank transfer clamping frame, driving the initial blank, which is compressed and contracted during clamping, to expand outward.

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