Automobile dust cover injection stretch blow molding machine

Abstract

The application discloses an injection-stretch-blowing blow molding machine for automobile dust covers, which comprises a machine body, a screw extruder arranged on the upper surface of the machine body and a rack arranged on the front side of the machine body, wherein the front end of the screw extruder is provided with an extrusion head matched with the screw extruder, the extrusion end of the extrusion head faces upwards, the inner wall of the rear side of the rack is provided with a blow-stretch device located directly above the extrusion head, the inner wall of the rear side of the rack is provided with a forming device located between the extrusion head and the blow-stretch device, the left side of the inner wall of the rack is provided with a grabbing device, the left side of the inner wall of the rack is provided with a cutting treatment device located in front of the grabbing device, and the gap between the blow-stretch device and the extrusion head corresponds to the position of the grabbing device. The injection-stretch-blowing blow molding machine for automobile dust covers can not only guarantee the thickness of the end part of the automobile dust cover and form a plurality of protrusions which are uniformly distributed on the outer wall of the end part in a circumferential direction, but also effectively form the wave crest and wave trough structure of the automobile dust cover body, and further effectively guarantee the forming efficiency and forming quality.

Description

TECHNICAL FIELD

[0001] The present application relates to a blow molding machine, in particular to an injection stretch blow molding machine for automobile dust cover. BACKGROUND

[0002] The automobile dust cover is a dustproof device used on the automobile, and the automobile dust cover is generally blow molded by a blow molding machine.

[0003] When the automobile dust cover is used, the strength of one end of the automobile dust cover needs to be ensured, so as to ensure the stable connection between the automobile dust cover and the automobile parts. The strength of the end of the automobile dust cover is mainly determined by the thickness of the automobile dust cover. However, the thickness of the product has requirements for the blow molding method. Once the thickness is too large, the ordinary blow molding machine cannot blow mold, and the outer wall of the end for fixing with the automobile parts is provided with a plurality of protrusions uniformly distributed in a circle. It is also impossible to produce by blow molding. At the same time, the automobile dust cover body is corrugated, like a corrugated pipe. Therefore, the automobile dust cover body has a plurality of uniformly distributed wave crest and wave trough structures. The wave crest and wave trough structures cannot be produced by injection molding. Finally, the end of the automobile dust cover can only be formed by injection molding, and the automobile dust cover body can only be formed by blow molding. If a automobile dust cover meeting the requirements is to be produced, a special blow molding machine is needed to blow mold the automobile dust cover body, and then an injection molding machine is used to injection mold the actual required end on the automobile dust cover body. This molding method not only has extremely troublesome steps, but also seriously affects the molding efficiency. In the case of non-integral molding, it is difficult to ensure the quality of the molded automobile dust cover. SUMMARY

[0004] The present application solves the existing technical problems by providing an injection stretch blow molding machine for automobile dust cover. It can not only ensure the thickness of the end of the automobile dust cover and form a plurality of protrusions uniformly distributed on the outer wall of the end, but also effectively form the wave crest and wave trough structures of the automobile dust cover body, and effectively ensure the molding efficiency and molding quality.

[0005] The technical solution adopted by the present application to solve the above technical problems is as follows:

[0006] The present application discloses an injection stretch blow molding machine for automobile dust cover, which comprises a machine body, a screw extruder arranged on the upper surface of the machine body, and a rack arranged on the front side of the machine body. The front end of the screw extruder is provided with an extrusion head matched therewith, and the extrusion end of the extrusion head faces upward. A blow molding device is arranged on the rear inner wall of the rack and located directly above the extrusion head. A molding device is arranged on the rear inner wall of the rack and located between the extrusion head and the blow molding device. A grabbing device is arranged on the left inner wall of the rack. A cutting treatment device is arranged on the left inner wall of the rack and located in front of the grabbing device. The gap between the blow molding device and the extrusion head corresponds to the position of the grabbing device.

[0007] The blowing and drawing device comprises a first slide rail seat plate arranged on the inner wall of the rear side of the frame; the left and right sides of the front side wall of the first slide rail seat plate are provided with first slide rails which are symmetrical to each other; a motor mounting seat is arranged at the upper end of the first slide rail seat plate; a servo motor matched with the motor mounting seat is arranged on the motor mounting seat; the lower end of the motor shaft of the servo motor is connected with a lead screw through a first coupling; the front side wall of the first slide rail seat plate is provided with an upper shaft seat between the upper ends of the first slide rails on the left and right sides; the front side wall of the first slide rail seat plate is provided with a lower shaft seat between the lower ends of the first slide rails on the left and right sides; the upper shaft seat is matched with the upper end of the lead screw, and the lower shaft seat is matched with the lower end of the lead screw; the front side of the first slide rail seat plate is provided with a lifting seat; the left and right sides of the rear side wall of the lifting seat are provided with first sliding blocks matched with the first slide rails; the left and right sides of the upper surface of the lifting seat are provided with demolding air cylinders which are symmetrical to each other, and the lower ends of the piston rods of the demolding air cylinders downwardly pass through the lifting seat; the lower ends of the piston rods of the demolding air cylinders on the left and right sides are connected through a connecting plate; the connecting plate is provided with a demolding mechanism matched with the connecting plate; the middle part of the rear side wall of the lifting seat is provided with a screw block matched with the lead screw.

[0008] The demolding mechanism comprises a fixed hole arranged in the middle of the connecting plate; a movable tube coaxial with the fixed hole is arranged below the connecting plate; the upper end of the movable tube penetrates the fixed hole upward and is screwed with a limiting sleeve which is attached to the upper surface of the connecting plate; an annular step which is attached to the lower surface of the connecting plate is arranged on the outer wall of the upper part of the movable tube; a gas feeding seat corresponding to the position of the movable tube is arranged on the lower surface of the lifting seat; a connecting hole is arranged in the center of the lower surface of the gas feeding seat; a fixed tube matched with the connecting hole is arranged in the connecting hole; a gas inlet hole is arranged on the outer wall of the gas feeding seat and penetrates through the upper end tube opening of the fixed tube; the lower end of the fixed tube penetrates into the movable tube through the upper end tube opening of the movable tube; an expanding tube is arranged on the lower end of the fixed tube and penetrates through the expanding tube; a plurality of elastic holes are arranged on the outer wall of the expanding tube and penetrate through the inner space of the expanding tube; a plurality of notches are arranged on the lower end of the expanding tube and penetrate through the elastic holes, and the expanding tube is closed by the elasticity of the expanding tube; a blowing tube is arranged in the lower part of the fixed tube; the lower end of the blowing tube penetrates into the expanding tube and is provided with a shaping structure matched with the lower end of the expanding tube; a traction structure matched with the blowing tube is arranged on the upper part of the movable tube; the traction structure comprises a screw hole arranged on the outer wall of the upper part of the movable tube, and the screw hole penetrates through the inner space of the movable tube; a first long circular hole corresponding to the position of the screw hole is arranged on the lower part of the movable tube, and the first long circular hole penetrates through the inner space of the movable tube; a positioning sliding groove corresponding to the position of the first long circular hole is arranged on the outer wall of the upper part of the blowing tube; a traction screw matched with the screw hole is screwed in the screw hole, and the head of the traction screw is arranged outside the movable tube; the inner end of the traction screw penetrates through the first long circular hole and into the positioning sliding groove; the shaping structure comprises a shaping head arranged on the lower end of the blowing tube; a limiting conical surface which is narrow at the upper end and wide at the lower end is arranged on the inner wall of the lower end tube opening of the movable tube; an outer conical surface which is narrow at the upper end and wide at the lower end is arranged on the outer wall of the lower end of the expanding tube; the expanding gap between the outer conical surface and the limiting conical surface; a sealing groove which is annular is arranged on the inner wall of the lower end tube opening of the expanding tube; the upper side groove wall of the sealing groove is a pressure conical surface which is narrow at the upper end and wide at the lower end; an active sleeve matched with the blowing tube is arranged on the outer sleeve of the lower part of the blowing tube; a conical tube which is narrow at the upper end and wide at the lower end is arranged on the lower end of the active sleeve and extends downward; the outer wall of the conical tube is attached to the pressure conical surface; a sealing sleeve matched with the sealing groove is arranged on the lower end of the conical tube and extends downward; the sealing sleeve is sleeved on the outer wall of the shaping head; the upper end of the outer wall of the shaping head is attached to the inner wall of the sealing sleeve; a pressing conical surface which is narrow at the upper end and wide at the lower end is arranged on the outer wall of the upper end of the shaping head.

[0009] The fixed pipe upper end pipe orifice is provided with a matched limiting plug; the limiting plug center is provided with a vent hole; the air inlet hole is communicated with the fixed pipe internal space through the vent hole; the limiting plug lower surface outer edge and the blowing pipe upper end surface outer edge are provided with a reset spring; the screw block center is provided with a longitudinal through self center hole; the center hole is provided with a matched screw sleeve; the screw sleeve is screwed on the screw rod outside; the screw sleeve upper end is provided with a fixed part matched with the screw block upper surface; the fixed part and the screw block are fixed by screws; the upper shaft seat is provided with an upper bearing hole coaxial with the screw rod, the screw rod upper end passes through the upper bearing hole; the lower shaft seat is provided with a lower bearing hole coaxial with the screw rod, the screw rod lower end passes through the lower bearing hole; the screw rod upper end outer wall and the upper bearing hole inner wall are provided with an upper bearing; the screw rod lower end outer wall and the lower bearing hole inner wall are provided with a lower bearing.

[0010] The forming device includes a second slide rail seat plate provided on the rear side inner wall of the frame; the front side side walls of the second slide rail seat plate are provided with symmetric second slide rails on the upper and lower edges; the left end front side side wall of the second slide rail seat plate is provided with a left cylinder fixing seat; the left cylinder fixing seat is provided with a matched left cylinder thereon; the piston rod right end of the left cylinder is provided with a left forming block located on the front side of the second slide rail seat plate; the right end front side side wall of the second slide rail seat plate is provided with a right cylinder fixing seat; the right cylinder fixing seat is provided with a matched right cylinder thereon; the piston rod left end of the right cylinder is provided with a right forming block; the left forming block rear side side walls and the right forming block rear side side walls are provided with second sliders matched with the second slide rails on the upper and lower edges; the left forming block right side side wall is provided with a left cavity; the right forming block left side side wall is provided with a right cavity opposite to the left cavity; the center block front side side wall center of the second slide rail seat plate is provided with a center block; the upper part of the center block front side side wall is provided with an upper guide groove; the lower part of the center block front side side wall is provided with a lower guide groove; the center block front side side wall center is provided with a gear hole; the upper end of the gear hole is communicated with the upper guide groove, and the lower end of the gear hole is communicated with the lower guide groove; the gear hole is provided with a matched rotating gear; the left forming block rear side side wall is provided with a left rack corresponding to the position of the lower guide groove, the left rack passes through the lower guide groove and is engaged with the rotating gear; the right forming block rear side side wall is provided with a right rack corresponding to the position of the upper guide groove, the right rack passes through the upper guide groove and is engaged with the rotating gear; the center block front side side wall is provided with a cover plate, which covers the front side slot of the upper guide groove, the front side slot of the lower guide groove and the front side hole of the gear hole; the center block and the cover plate are fixed by screws; the right side of the frame is provided with a right mounting port matched with the right cylinder; the left side of the frame is provided with a left mounting port matched with the left cylinder.

[0011] The grabbing device comprises a lifting mechanism mounting plate arranged on the left side inner wall of the frame; the lifting mechanism mounting plate is provided with a lifting mechanism matched therewith; the lifting mechanism comprises a moving seat; the right side wall of the moving seat is provided with a first rotary motor fixing seat; the first rotary motor fixing seat is provided with a first rotary motor matched therewith; the lower end of the motor shaft of the first rotary motor is provided with an extension arm; the front end upper surface of the extension arm is provided with a second rotary motor fixing seat; the second rotary motor fixing seat is provided with a second rotary motor matched therewith; the lower end of the motor shaft of the second rotary motor is provided with a pneumatic finger; the right side clamping jaw of the pneumatic finger is provided with a right half circular tube; the left side clamping jaw of the pneumatic finger is provided with a left half circular tube opposite to the right half circular tube; the left half circular tube and the right half circular tube are enclosed to form a grabbing tube; the left half circular tube is provided with left notches symmetrically arranged on the front and back sides thereof; the right half circular tube is provided with right notches opposite to the left notches; the left notches and the right notches are enclosed to form a pressure release opening; the lifting mechanism further comprises a stand arranged on the lifting mechanism mounting plate; the upper end of the stand is provided with an upper seat plate, and the lower end of the stand is provided with a lower seat plate; a guide plate is arranged between the right end of the upper seat plate and the right end of the lower seat plate; the moving seat is provided with a square hole matched with the guide plate; the upper part of the stand is provided with a lifting cylinder mounting seat; the lifting cylinder mounting seat is provided with a lifting cylinder matched therewith, and the lower end of the piston rod of the lifting cylinder is arranged at the middle part of the upper end of the moving seat.

[0012] The cutting processing device comprises an upper fixing frame arranged on the left side inner wall of the frame; the lower end of the upper fixing frame is provided with an upper adjusting plate; the lower surface of the upper adjusting plate is provided with an upper fixing plate matched therewith; the upper fixing plate is provided with an upper positioning plate arranged directly below; a plurality of upper supporting rods are arranged between the outer edge of the lower surface of the upper fixing plate and the outer edge of the upper surface of the upper positioning plate; the left side inner wall of the frame is provided with a lower fixing frame arranged directly below the upper fixing frame; the upper end of the lower fixing frame is provided with a lower adjusting plate corresponding to the position of the upper adjusting plate; the upper surface of the lower adjusting plate is provided with a lower fixing plate matched therewith; the lower fixing plate is provided with a lower positioning plate arranged directly below the upper positioning plate; a plurality of lower supporting rods are arranged between the outer edge of the lower surface of the lower positioning plate and the outer edge of the upper surface of the lower fixing plate; the rear part of the upper positioning plate and the rear part of the lower positioning plate are both provided with a clamping hole; the rear lower surface of the upper fixing plate and the rear upper surface of the lower fixing plate are both provided with a centrifugal cutting mechanism corresponding to the position of the clamping hole; the front part of the lower fixing plate is provided with a driving mechanism matched with the centrifugal cutting mechanism.

[0013] The centrifugal cutting mechanism comprises an auxiliary bearing seat arranged on the lower surface of the rear part of the upper fixed plate and the upper surface of the rear part of the lower fixed plate; an auxiliary bearing hole is arranged in the center of the auxiliary bearing seat; an auxiliary bearing is arranged in the auxiliary bearing hole; a driven wheel is arranged on the upper end of the auxiliary bearing seat and extends out of the auxiliary bearing hole; an arc-shaped swing piece is arranged on one side of the upper surface of the auxiliary bearing seat; a positioning hole is arranged in the middle of the swing piece; a first screw hole is arranged on the upper surface of the auxiliary bearing seat and corresponds to the position of the positioning hole; a positioning screw passes through the positioning hole downward and is screwed into the first screw hole, and the head of the positioning screw is arranged above the swing piece; a through hole is arranged in the center of the auxiliary bearing seat and penetrates the auxiliary bearing seat longitudinally; a cutting knife is arranged on one end of the swing piece and faces the through hole; the weight of the end of the swing piece without the cutting knife is greater than the weight of the end of the swing piece with the cutting knife; a reset structure is arranged on the swing piece; the reset structure comprises a second screw hole and a third screw hole arranged on one end of the swing piece, and the third screw hole is adjacent to the positioning hole; a clamping plate is arranged above one end of the swing piece; the tail of the cutting knife is clamped between the lower surface of the clamping plate and the upper surface of the end of the swing piece; the first screw hole corresponds to the position of the second screw hole, and the second screw hole corresponds to the position of the third screw hole; a fastening screw passes through the first screw hole downward and is screwed into the second screw hole, and the head of the fastening screw is pressed on the upper surface of the clamping plate; a clamping screw passes through the second screw hole downward and is screwed into the third screw hole, and the head of the clamping screw is arranged above the clamping plate; a fourth screw hole is arranged on the swing piece; a reset screw is screwed into the fourth screw hole, and the head of the reset screw is arranged above the swing piece; an adjusting nut is screwed on the reset screw and is attached to the upper surface of the swing piece; a torsion spring is arranged outside the reset screw between the head of the reset screw and the adjusting nut; one end of the torsion spring is pressed on the screw of the clamping screw, and the other end of the torsion spring is fixed on the auxiliary bearing seat.

[0014] The driving mechanism comprises a driving motor arranged at the front lower side of the lower fixed plate, a plurality of connecting rods are arranged between the outer edge of the upper surface of the driving motor and the lower surface of the front part of the lower fixed plate, the upper end of the motor shaft of the driving motor is connected with a lower transmission shaft through a second coupling, the upper part of the lower transmission shaft is provided with a lower driving wheel corresponding to the position of the driven wheel at the lower side, the front part of the lower positioning plate is provided with a lower universal hole corresponding to the position of the lower transmission shaft, a upper transmission shaft is arranged between the front part of the upper fixed part and the front part of the upper positioning plate, the front part of the upper fixed plate is provided with a rotating hole corresponding to the position of the upper transmission shaft, the upper end of the upper transmission shaft penetrates into the rotating hole upwards, a rotating bearing is arranged between the outer wall of the upper end of the upper transmission shaft and the inner wall of the rotating hole, the upper part of the upper transmission shaft is provided with an upper driving wheel corresponding to the position of the driven wheel at the upper side, the upper driving wheel and the driven wheel at the upper side and the lower driving wheel and the driven wheel at the lower side are connected through synchronous belts, the front part of the upper positioning plate is provided with an upper universal hole corresponding to the position of the upper transmission shaft, a middle transmission shaft is arranged between the upper universal hole and the lower universal hole, the lower end of the upper transmission shaft and the upper end of the middle transmission shaft are connected through an upper universal joint arranged in the upper universal hole, and the upper end of the lower transmission shaft and the lower end of the middle transmission shaft are connected through a lower universal joint arranged in the lower universal hole.

[0015] A plurality of second long circular holes are arranged on the upper adjusting plate, a plurality of fifth screw holes corresponding to the positions of the second long circular holes are arranged on the upper surface of the upper fixed plate, a plurality of third long circular holes are arranged on the lower adjusting plate, the third long circular holes and the second long circular holes are perpendicular to each other, a plurality of sixth screw holes corresponding to the positions of the third long circular holes are arranged on the lower surface of the lower fixed plate, a plurality of seventh screw holes are arranged on the upper surface of the centrifugal seat and are arranged in a circumferential uniform manner, a plurality of counterweight blocks corresponding to the positions of the seventh screw holes are arranged on the upper surface of the centrifugal seat, and the counterweight blocks are provided with sink holes penetrating through the seventh screw holes.

[0016] The beneficial effects of the present application are as follows:

[0017] Compared with the prior art, the automobile dust cover injection stretch blow blow molding machine adopting the structure of the present application can not only inject the end part of the automobile dust cover through the blow stretch device, effectively ensure that the end part of the automobile dust cover has the actual required thickness, and can stretch out the strip-shaped plastic body for blow molding, and the forming device can make the strip-shaped plastic body form the actual required shape after the blow stretch device blows out the gas, complete the blow molding work, avoid the case that the injection molding method cannot effectively form the peak and valley structure of the automobile dust cover body, thereby realizing the injection stretch blow integrated molding method, effectively avoiding the case that the product needs to be transferred between two devices due to the need to simultaneously adopt the blow molding process and the injection molding process, thereby causing the molding efficiency to be extremely low and the molding quality to be poor, and effectively ensuring the molding efficiency and the molding quality. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the injection stretch blow molding machine for automobile dust cover in another angle of the present application;

[0019] Figure 2 is a structural schematic view of the injection stretch blow molding machine for automobile dust cover in another angle of the present application;

[0020] Figure 3 is a structural schematic view of the blow stretch device in one angle;

[0021] Figure 4 is a sectional view of the blow stretch device in part;

[0022] Figure 5 is an enlarged view of A part of Figure 4

[0023] Figure 6 is a structural schematic view of the blow stretch device in another angle;

[0024] Figure 7 is a structural schematic view of the screw sleeve;

[0025] Figure 8 is a structural schematic view of the outer expansion pipe;

[0026] Figure 9 is a structural schematic view of the molding device in one angle;

[0027] Figure 10 is a structural schematic view of the molding device in another angle;

[0028] Figure 11 is a structural schematic view of the grabbing device in one angle;

[0029] Figure 12 is a structural schematic view of the grabbing device in another angle;

[0030] Figure 13 is a structural schematic view of the cutting processing device in one angle;

[0031] Figure 14 is a structural schematic view of the cutting processing device in another angle;

[0032] Figure 15 is a structural schematic view of the cutting processing device in part. DETAILED DESCRIPTION

[0033] The present application will be further described in detail below in conjunction with the drawings and specific embodiments:

[0034] Please refer to Figures 1 to 15 ​The application provides a kind of automobile dust cover injection blow blow molding machine, including machine body 6, be located on the upper surface of machine body 6 screw extruder 7 and be located on the front side of machine body 6 rack 8, the front end of screw extruder 7 is equipped with the extrusion head 9 matched with it, and the extrusion end 4 of extrusion head 9 is upwards, the rear side inner wall of rack 8 is equipped with a blow-drawing device 1 located directly above extrusion head 9;The rear side inner wall of rack 8 is equipped with a forming device 2 located between extrusion head 9 and blow-drawing device 1;The left side inner wall of rack 8 is equipped with a grabbing device 3;The left side inner wall of rack is equipped with a cutting treatment device 5 located in the front side of grabbing device 3;The gap between blow-drawing device 1 and extrusion head 9 corresponds to the position of grabbing device 3.

[0035] The blow-drawing device 1 includes a first slide rail seat plate 101 located on the rear side inner wall of the rack;The left and right sides of the front side wall of the first slide rail seat plate 101 are provided with first slide rails 102 that are symmetrical to each other;A motor mounting seat 103 is provided at the upper end of the first slide rail seat plate 101;A servo motor 104 matched with the motor mounting seat 103 is provided on the motor mounting seat 103;The lower end of the motor shaft of the servo motor 104 is connected with a lead screw 106 through a first coupling 105;An upper shaft seat 107 is provided on the first slide rail seat plate 101 front side wall between the upper ends of the first slide rails 102 on the left and right sides;A lower shaft seat 108 is provided on the first slide rail seat plate 101 front side wall between the lower ends of the first slide rails 102 on the left and right sides;The upper shaft seat 107 is matched with the upper end of the lead screw 106, and the lower shaft seat 108 is matched with the lower end of the lead screw 106;A lifting seat 109 is provided on the front side of the first slide rail seat plate 101;First slide blocks 110 matched with the first slide rails 102 are provided on the left and right sides of the rear side wall of the lifting seat 109;Demolding air cylinders 111 symmetrical to each other are provided on the upper surface of the lifting seat 109 on the left and right sides, and the lower end of the piston rod of the demolding air cylinder 111 passes through the lifting seat 109 downward;The lower ends of the piston rods of the demolding air cylinders 111 on the left and right sides are connected through a connecting plate 112;A demolding mechanism matched with the connecting plate 112 is provided on the connecting plate 112;A screw block 113 matched with the lead screw 106 is provided in the middle of the rear side wall of the lifting seat 109.

[0036] The demolding mechanism comprises a fixing hole 114 arranged in the middle of the connecting plate 112; a movable tube 115 coaxial with the fixing hole 114 is arranged below the connecting plate 112; the upper end of the movable tube 115 penetrates the fixing hole 114 upward and is screwed with a limiting sleeve 116 abutting the upper surface of the connecting plate 112; an annular step 117 abutting the lower surface of the connecting plate 112 is arranged on the outer wall of the upper part of the movable tube 115; a gas feeding seat 118 corresponding to the position of the movable tube 115 is arranged on the lower surface of the lifting seat 109; a connecting hole 119 is arranged in the center of the lower surface of the gas feeding seat 118; a fixed tube 120 matched with the connecting hole 119 is arranged in the connecting hole 119; a gas inlet hole 121 penetrating through the upper end of the fixed tube 120 is arranged on the outer wall of the gas feeding seat 118; the lower end of the fixed tube 120 penetrates into the movable tube through the upper end of the movable tube 115; the lower end of the fixed tube 120 is provided with an outward expansion tube 122 penetrating therethrough; a plurality of elastic holes 123 penetrating through the internal space of the outward expansion tube 122 are arranged on the outer wall of the outward expansion tube 122; a plurality of notches 124 penetrating through the elastic holes 123 are arranged on the lower end of the outward expansion tube 122, and the outward expansion tube 122 closes the notches 124 under the elastic action of itself; a blowing tube 125 is arranged in the lower part of the fixed tube 120; the lower end of the blowing tube 125 penetrates into the outward expansion tube 122 downward and is provided with a shaping structure matched with the lower end of the outward expansion tube 122; a traction structure matched with the blowing tube 125 is arranged on the upper part of the movable tube 115.

[0037] The traction structure comprises a screw hole 126 arranged on the outer wall of the upper part of the movable tube 115, the screw hole 126 penetrating through the internal space of the movable tube 115; a first long circular hole 127 corresponding to the position of the screw hole 126 is arranged in the lower part of the movable tube 115, the first long circular hole 127 penetrating through the internal space of the movable tube 115; a positioning sliding groove 128 corresponding to the position of the first long circular hole 127 is arranged on the outer wall of the upper part of the blowing tube 125; a traction screw 129 matched with the screw hole 126 is screwed in the screw hole 126, and the head of the traction screw 129 is located outside the movable tube 115; the inner end of the traction screw 129 penetrates into the positioning sliding groove 128 through the first long circular hole 127.

[0038] The shaping structure comprises a shaping head 130 arranged at the lower end of the blowing pipe 125; the inner wall of the lower end of the movable pipe 115 is provided with a limiting conical surface 131 which is narrow at the top and wide at the bottom; the outer wall of the lower end of the outer expanding pipe 122 is provided with an outer conical surface 132 which is narrow at the top and wide at the bottom; the outer conical surface 132 and the limiting conical surface 131 have an expanding gap 133 therebetween; the inner wall of the lower end of the outer expanding pipe 122 is provided with a sealing groove 134 which is annular; the upper groove wall of the sealing groove 134 is a pressure receiving conical surface 135 which is narrow at the top and wide at the bottom; the lower end of the movable sleeve 136 which is matched with the blowing pipe 125 is provided with a conical pipe 137 which is narrow at the top and wide at the bottom and extends downward; the outer wall of the conical pipe 137 is matched with the pressure receiving conical surface 135; the lower end of the conical pipe 137 extends downward and is provided with a sealing sleeve 138 which is matched with the sealing groove 134; the sealing sleeve 138 is sleeved on the shaping head 130; the outer wall of the upper part of the shaping head 130 is matched with the inner wall of the sealing sleeve 138; the outer wall of the upper end of the shaping head 130 is provided with a pressure applying conical surface 139 which is narrow at the top and wide at the bottom.

[0039] The upper end of the fixed pipe 120 is provided with a limiting plug 140 which is matched therewith; the center of the limiting plug 140 is provided with an air passage hole 141; the air inlet hole 121 is communicated with the internal space of the fixed pipe 120 through the air passage hole 141; the outer edge of the lower surface of the limiting plug 140 and the outer edge of the upper end surface of the blowing pipe 125 are provided with a return spring 143 therebetween.

[0040] The center of the screwing block 113 is provided with a central hole which is longitudinally through the screwing block 113; the central hole is provided with a screwing sleeve 145 which is matched therewith; the screwing sleeve 145 is screwed on the screw rod 106; the upper end of the screwing sleeve 145 is provided with a fixed part 146 which is matched with the upper surface of the screwing block 113; the fixed part 146 and the screwing block 113 are fixed by a screw.

[0041] The upper shaft seat 107 is provided with an upper bearing hole 147 which is coaxial with the screw rod 106; the upper end of the screw rod 106 passes through the upper bearing hole 147; the lower shaft seat 108 is provided with a lower bearing hole 148 which is coaxial with the screw rod 106; the lower end of the screw rod 106 passes through the lower bearing hole 148; the outer wall of the upper end of the screw rod 106 and the inner wall of the upper bearing hole 147 are provided with an upper bearing 149 therebetween; the outer wall of the lower end of the screw rod 106 and the inner wall of the lower bearing hole 148 are provided with a lower bearing 150 therebetween.

[0042] The forming device 2 comprises a second slide rail seat plate 201 arranged on the inner wall of the rear side of the frame 8; the front side sidewall of the second slide rail seat plate 201 is provided with symmetrically arranged second slide rails 202 on the upper and lower sides; the left end of the front side sidewall of the second slide rail seat plate 201 is provided with a left cylinder fixing seat 203; the left cylinder fixing seat 203 is provided with a left cylinder 204 matched therewith; the right end of the piston rod of the left cylinder 204 is provided with a left forming block 205 located on the front side of the second slide rail seat plate 201; the right end of the front side sidewall of the second slide rail seat plate 201 is provided with a right cylinder fixing seat 206; the right cylinder fixing seat 206 is provided with a right cylinder 207 matched therewith; the left end of the piston rod of the right cylinder 207 is provided with a right forming block 208; the upper and lower sides of the rear side sidewall of the left forming block 205 and the upper and lower sides of the rear side sidewall of the right forming block 208 are provided with second slide blocks 209 matched with the second slide rails 202; the right side sidewall of the left forming block 205 is provided with a left cavity 210; the left side sidewall of the right forming block 208 is provided with a right cavity 211 opposite to the left cavity 210.

[0043] The center of the front side sidewall of the second slide rail seat plate 201 is provided with a center block 212; the upper part of the front side sidewall of the center block 212 is provided with an upper guide groove 213; the lower part of the front side sidewall of the center block 212 is provided with a lower guide groove 214; the center of the front side sidewall of the center block 212 is provided with a gear hole 215; the upper end of the gear hole 215 is in communication with the upper guide groove 213, and the lower end of the gear hole 215 is in communication with the lower guide groove 214; the gear hole 215 is provided with a rotating gear 216 matched therewith; the rear side sidewall of the left forming block 205 is provided with a left rack 217 corresponding to the position of the lower guide groove 214, the left rack 217 passes through the lower guide groove 214 and is engaged with the rotating gear 216; the rear side sidewall of the right forming block 208 is provided with a right rack 218 corresponding to the position of the upper guide groove 213, the right rack 218 passes through the upper guide groove 213 and is engaged with the rotating gear 216; the front side sidewall of the center block 212 is provided with a cover plate 219, which covers the front side openings of the upper guide groove 213, the lower guide groove 214 and the gear hole 215; the center block 212 and the cover plate 219 are fixed by screws.

[0044] The right side of the frame 8 is provided with a right mounting hole 220 matched with the right cylinder 207; the left side of the frame 8 is provided with a left mounting hole 221 matched with the left cylinder 204.

[0045] The grabbing device 3 comprises a lifting mechanism mounting plate 301 arranged on the left side inner wall of the frame 8; the lifting mechanism mounting plate 301 is provided with a lifting mechanism matched therewith; the lifting mechanism comprises a moving seat 302; the right side wall of the moving seat 302 is provided with a first rotary motor fixing seat 303; the first rotary motor fixing seat 303 is provided with a first rotary motor 304 matched therewith; the lower end of the motor shaft of the first rotary motor 304 is provided with an extension arm 305; the front end upper surface of the extension arm 305 is provided with a second rotary motor fixing seat 306; the second rotary motor fixing seat 306 is provided with a second rotary motor 307 matched therewith; the lower end of the motor shaft of the second rotary motor 307 is provided with a pneumatic finger 308.

[0046] The right side clamping jaw of the pneumatic finger 308 is provided with a right semicircular pipe 309; the left side clamping jaw of the pneumatic finger 308 is provided with a left semicircular pipe 310 opposite to the right semicircular pipe 309; the left semicircular pipe 310 and the right semicircular pipe 309 are surrounded to form a grabbing pipe 311.

[0047] The left semicircular pipe 310 is provided with left notches 312 symmetrically arranged on the front and back sides; the right semicircular pipe 309 is provided with right notches 313 opposite to the left notches 312; the left notches 312 and the right notches 313 are surrounded to form a pressure releasing port 314.

[0048] The lifting mechanism further comprises a stand 315 arranged on the lifting mechanism mounting plate 301; the upper end of the stand 315 is provided with an upper seat plate 320, and the lower end of the stand 315 is provided with a lower seat plate 316; a guide plate 317 is arranged between the right end of the upper seat plate 320 and the right end of the lower seat plate 316; the moving seat 302 is provided with a square hole 318 matched with the guide plate; the upper part of the stand 315 is provided with a lifting cylinder mounting seat 319; the lifting cylinder mounting seat 319 is provided with a lifting cylinder matched therewith, and the lower end of the piston rod of the lifting cylinder is arranged at the upper middle part of the moving seat 302.

[0049] The cutting device 5 includes an upper fixed frame 501 located on the inner left side wall of the frame 8; an upper adjusting plate 502 is located at the lower end of the upper fixed frame 501; an upper fixed plate 503 matching the upper adjusting plate 502 is located on the lower surface of the upper adjusting plate 502; an upper positioning plate 504 is located directly below the upper fixed plate 503; a plurality of evenly distributed upper support rods 505 are located between the outer edge of the lower surface of the upper fixed plate 503 and the outer edge of the upper surface of the upper positioning plate 504; a lower fixed frame 506 located directly below the upper fixed frame 501 is located on the inner left side wall of the frame 8; a lower adjusting plate 507 corresponding to the position of the upper adjusting plate 502 is located at the upper end of the lower fixed frame 506; The upper surface of the lower adjusting plate 507 is provided with a matching lower fixing plate 508; a lower positioning plate 509 is provided directly above the lower fixing plate 508 and directly below the upper positioning plate 504; a plurality of evenly distributed lower support rods 510 are provided between the outer edge of the lower surface of the lower positioning plate 509 and the outer edge of the upper surface of the lower fixing plate 508; a locking hole 511 is provided at the rear of both the upper positioning plate 504 and the lower positioning plate 509; a centrifugal cutting mechanism corresponding to the position of the locking hole 511 is provided on the lower rear surface of the upper fixing plate 503 and the upper rear surface of the lower fixing plate 508; a driving mechanism matching the centrifugal cutting mechanism is provided at the front of the lower fixing plate 508.

[0050] The centrifugal cutting mechanism includes an auxiliary bearing seat 512 located on the lower rear surface of the upper fixed plate 503 and the upper rear surface of the lower fixed plate 508; the auxiliary bearing seat 512 has an auxiliary bearing hole 513 at its center; a matching centrifugal seat 514 is provided inside the auxiliary bearing hole 513; an auxiliary bearing 515 is provided between the lower outer wall of the centrifugal seat 514 and the inner wall of the auxiliary bearing hole 513; the upper end of the centrifugal seat 514 extends upward to the outside of the auxiliary bearing hole 513 and is provided with a driven wheel 516; an arc-shaped oscillating member 517 is provided on one side of the upper surface of the centrifugal seat 514; the middle of the oscillating member 517... A positioning hole 518 is provided; the upper surface of the centrifuge seat 514 is provided with a first screw hole corresponding to the position of the positioning hole 518; a positioning screw 520 passes downward through the positioning hole 518 and is screwed into the first screw hole, with the head of the positioning screw 520 located above the swing member; the centrifuge seat 514 is provided with a longitudinal through hole 521 at its center; one end of the swing member 517 is provided with a cutting blade 523 facing the through hole 521; the weight of the end of the swing member 517 without the cutting blade 523 is greater than the weight of the end of the swing member 517 with the cutting blade 523; the swing member 517 is provided with a reset structure.

[0051] The reset structure comprises a second threaded hole and a third threaded hole arranged at one end of the swing member 517, the third threaded hole is adjacent to the positioning hole 518; a clamping plate 526 is arranged above one end of the swing member 517; the tail of the cutting knife 523 is clamped between the lower surface of the clamping plate 526 and the upper surface of the end of the swing member 517; the clamping plate 526 is provided with a first through hole 527 corresponding to the position of the second threaded hole and a second through hole 528 corresponding to the position of the third threaded hole; a fastening screw 529 passes downward through the first through hole 527 and is screwed into the second threaded hole, the head of the fastening screw 529 is pressed on the upper surface of the clamping plate 526; a clamping screw 530 passes downward through the second through hole 528 and is screwed into the third threaded hole, the head of the clamping screw 530 is located above the clamping plate 526; the swing member 517 is provided with a fourth threaded hole; a reset screw 532 is screwed into the fourth threaded hole, the head of the reset screw 532 is located above the swing member 517; an adjusting nut 533 which is in close contact with the upper surface of the swing member 517 is screwed on the reset screw 532; a torsion spring 534 which is sleeved on the reset screw 532 is arranged between the head of the reset screw 532 and the adjusting nut 533; one end of the torsion spring 534 is pressed on the screw of the clamping screw 530, the other end of the torsion spring 534 is fixed on the centrifugal seat 514.

[0052] The driving mechanism comprises a driving motor 535 arranged at the front lower side of the lower fixed plate 508, a plurality of connecting rods 536 evenly distributed between the outer edge of the upper surface of the driving motor 535 and the lower surface of the front part of the lower fixed plate 508, the upper end of the motor shaft of the driving motor 535 is connected with a lower transmission shaft 538 through a second coupling 537, the upper part of the lower transmission shaft 538 is provided with a lower driving wheel 539 corresponding to the position of the driven wheel 516 located at the lower side, the front part of the lower positioning plate 509 is provided with a lower universal hole 540 corresponding to the position of the lower transmission shaft 538, a upper transmission shaft 541 is arranged between the front part of the upper fixed plate 146 and the front part of the upper positioning plate 504, the front part of the upper fixed plate 503 is provided with a rotating hole 542 corresponding to the position of the upper transmission shaft 541, the upper end of the upper transmission shaft 541 penetrates into the rotating hole 542 upwards, a rotating bearing 543 is arranged between the outer wall of the upper end of the upper transmission shaft 541 and the inner wall of the rotating hole 542, the upper transmission shaft 541 is provided with an upper driving wheel 544 corresponding to the position of the driven wheel 516 located at the upper side, the upper driving wheel 544 and the upper driven wheel 516 and the lower driving wheel 539 and the lower driven wheel 516 are connected through a synchronous belt 545, the front part of the upper positioning plate 504 is provided with an upper universal hole 546 corresponding to the position of the upper transmission shaft 541, a middle transmission shaft 547 is arranged between the upper universal hole 546 and the lower universal hole 540, the upper end of the upper transmission shaft 541 and the upper end of the middle transmission shaft 547 are connected through an upper universal joint 548 arranged in the upper universal hole 546, and the lower end of the lower transmission shaft 538 and the lower end of the middle transmission shaft 547 are connected through a lower universal joint 549 arranged in the lower universal hole 540.

[0053] The upper adjusting plate 502 is provided with a plurality of second long circular holes 550 evenly distributed, the upper surface of the upper fixed plate 503 is provided with a plurality of fifth screw holes corresponding to the positions of the second long circular holes 550, the upper adjusting plate 507 is provided with a plurality of third long circular holes 552 evenly distributed, the third long circular holes 552 and the second long circular holes 550 are perpendicular to each other, and the lower surface of the lower fixed plate 508 is provided with a plurality of sixth screw holes corresponding to the positions of the third long circular holes 552.

[0054] The upper surface of the centrifugal seat 514 is provided with a plurality of seventh screw holes evenly distributed in a circle, a plurality of counterweight blocks 555 corresponding to the positions of the seventh screw holes are arranged on the upper surface of the centrifugal seat 514, and the counterweight blocks 555 are provided with a counterbore 556 penetrating through the seventh screw holes.

[0055] The use method of the application is as follows:

[0056] Before the automobile dust cover is produced by using the injection stretch blow molding machine, the demolding cylinder 111 is started, at this time, the piston rod of the demolding cylinder 111 drives the connecting plate 112 to move downward, and the upper end of the movable pipe 115 is fixed with the connecting plate 112 through the limiting sleeve 116 and the annular step 117, when the connecting plate 112 moves downward, the movable pipe 115 moves downward, the screw hole 126 on the movable pipe 115 is screwed with the traction screw 129, when the movable pipe 115 moves downward, the traction screw 129 moves downward synchronously, when the traction screw 129 moves downward to a certain stroke, the lower end surface of the traction screw 129 is in close contact with the lower side groove wall of the positioning sliding groove 128, with the continuous downward movement of the traction screw 129, the traction screw 129 extrudes the lower side groove wall of the positioning sliding groove 128, so that the downward movement of the blowing pipe 125 is realized, when the blowing pipe 125 moves downward, the shaping head 130 at the lower end of the blowing pipe 125 moves downward synchronously, when the shaping head 130 moves downward to the actual required position, the demolding cylinder 111 stops running, at this time, the cavity formed by the outer wall of the shaping head 130, the inner wall of the lower end pipe hole of the outer expansion pipe 122 and the inner hole lower end hole wall of the sealing sleeve 138 is the injection cavity in which the end part of the automobile dust cover is injection molded.

[0057] Then, the servo motor 104 is started, at this time, the motor shaft of the servo motor 104 drives the screw rod to rotate, the screw rod 106 is screwed with the screw sleeve 145 in the center hole of the screw block 113, at the same time, the first sliding block 110 at the rear side of the lifting seat 109 matches with the first sliding rail 102, therefore, when the screw rod 106 rotates, the lifting seat 109 converts the rotating force of the screw rod 106 into the force of the upward and downward movement of the lifting seat 109, at this time, the lifting seat 109 moves downward along the track of the first sliding rail 102, when the lifting seat 109 moves downward, the movable pipe 115 moves downward synchronously, finally, the lower end of the movable pipe 115 is inserted into the extrusion end 4 above the extrusion head 9, at this moment, the injection cavity formed by the outer wall of the shaping head 130, the inner wall of the lower end pipe hole of the outer expansion pipe 122 and the inner hole lower end hole wall of the sealing sleeve 138 is in connection with the inside of the extrusion end 4 of the extrusion head 9, then the screw rod extruder 7 is started, when the screw rod extruder 7 runs, the plastic body is melted in the screw rod extruder 7, finally, the plastic body is quantitatively extruded through the extrusion end 4 of the extrusion head 9, at this moment, the extrusion end 4 is in communication with the injection cavity, therefore, the extruded plastic body directly enters into the injection cavity, then the injection cavity is shaped according to its own shape, the injection work of the end part of the automobile dust cover is completed.

[0058] When the injection molding of the end of the automobile dust cover is completed, the screw extruder 7 continues to operate, the extrusion end 4 of the extrusion head 9 continues to extrude the plastic body, and the servo motor is started again. When the motor shaft of the servo motor 104 drives the screw rod 106 to rotate, the lifting seat 109 moves upward along the track of the first sliding rail 102. When the lifting seat 109 moves upward, the injection cavity formed by the outer wall of the shaping head 130, the inner wall of the lower end of the outer expansion pipe 122, and the inner wall of the lower end of the hole of the sealing sleeve 138 moves upward synchronously. At this time, the molded end of the automobile dust cover is adhered in the injection cavity. When the injection cavity moves upward, the injection cavity pulls the plastic body extruded from the extrusion end 4 of the extrusion head 9 upward to form a strip-shaped plastic body. The use of the screw rod 106 to move the lifting seat 109 can ensure the stability and uniformity of the plastic body pulled by the injection cavity, which is beneficial to the later blow molding work. When the injection cavity moves to above the molding device 2, the strip-shaped plastic body is just between the left molding block and the right molding block.

[0059] When the strip-shaped plastic body is between the left molding block 205 and the right molding block 208, it is actually in the left cavity 210 and the right cavity 211. At this time, the left cylinder 204 and the right cylinder 207 can be started simultaneously. When the left cylinder 204 is started, the piston rod of the left cylinder 204 drives the left molding block 205 to move right along the track of the second sliding rail 202. When the right cylinder 207 is started, the piston rod of the right cylinder 207 drives the right molding block 208 to move left along the track of the second sliding rail 202. Finally, the left side wall of the left cylinder 204 and the left side wall of the right cylinder 207 are fitted, and the left cavity 210 and the right cavity 211 form a complete cavity. The outer wall of the gas supply seat 118 is provided with an air inlet hole 121, which can be used to connect the gas circuit. When the strip-shaped plastic body in the left cavity 210 and the right cavity 211 needs to be blow molded, high-pressure gas enters the air inlet hole 121 through the gas circuit, then enters the fixed pipe 120, and then enters the blow pipe 125, and finally is sprayed from the lower end of the blow pipe 125. At this time, under the action of high-pressure gas, the plastic body is blown and tightly adheres to the inner wall of the left cavity 210 and the right cavity 211, so that the plastic body is blow molded. This molding method only needs to set a plurality of actual required wave peak and wave valley structures on the inner wall of the left cavity 210 and the right cavity 211, which can ensure that the blow molded plastic body has the actual required wave peak and wave valley structure. After the plastic body cools, the automobile dust cover is completely formed.

[0060] When the automobile dust cover is completely formed, the left cylinder 204 and the right cylinder 207 can be started again, at this time the left forming block 205 is driven by the left cylinder 204 to move left to reset, the right forming block 208 is driven by the right cylinder 207 to move right to reset, with the left cavity 210 and the right cavity 211 separated, the automobile dust cover blow molding body is completely exposed to the outside, thereby completing the automobile dust cover body demolding, then the automobile dust cover end can be demolded, at the same time, with the left forming block 205 and the right forming block 208 separated and reset, the grabbing device 3 is started synchronously, with the second rotary motor 307 of the grabbing device 3 started, the motor shaft of the second rotary motor 307 drives the pneumatic finger 308 to rotate, the grabbing pipe 311 on the clamping jaw of the pneumatic finger 308 is opposite to the formed automobile dust cover body, at this time the clamping jaw of the pneumatic finger 308 is opened, thereby driving the left half circular pipe 310 and the right half circular pipe 309 to separate, in the state of waiting to be grabbed, then the first rotary motor 304 can be started, at this time the first rotary motor 304 drives the extension arm 305 to rotate, thereby realizing the movement of the pneumatic finger, at this time the pneumatic finger 308 enters the gap between the left forming block 205 and the right forming block 208, and the left half circular pipe 310 and the right half circular pipe 309 are just on both sides of the automobile dust cover body, with the pneumatic finger 308 started, the left half circular pipe 310 and the right half circular pipe 309 are close to each other and clamp the automobile dust cover body.

[0061] When the automobile dust cover body is fixed, the automobile dust cover upper end can be truly demolded, at this time the demolding cylinder 111 can be started, the piston rod of the demolding cylinder 111 drives the connecting plate 112 to move upwards, when the connecting plate 112 moves upwards, the movable pipe 115 moves upwards synchronously, and the fixed pipe 120 and the outer expansion pipe 122 remain fixed and unmoved, when the movable pipe 115 moves upwards, the traction screw 129 moves upwards, when the traction screw 129 moves upwards to a certain stroke, the inner end upper surface of the traction screw 129 is in contact with the upper side groove wall of the positioning sliding groove 128, with the continuous upward movement of the traction screw 129, the inner end of the traction screw 129 extrudes the upper side groove wall of the positioning sliding groove 128, at this time the blowing pipe 125 is pressed and moves upwards, the shaping head 130 moves upwards, when the shaping head 130 moves upwards, the shaping head 130 is first separated from the inner wall of the automobile dust cover end, when the shaping head 130 moves upwards to a certain stroke, the pressure cone surface 139 at the upper end of the shaping head 130 is in contact with the conical inner wall of the conical pipe 137, with the continuous upward movement of the shaping head 130, the pressure cone surface 139 extrudes the conical inner wall of the conical pipe 137, so that the conical pipe 137 expands outward, because the conical outer wall of the conical pipe 137 is in contact with the pressure cone surface 135 when the conical pipe 137 expands outward, the conical outer wall of the conical pipe 137 extrudes the pressure cone surface 135, with the continuous upward pulling of the conical pipe 137 by the shaping head 130, the force exerted by the conical pipe 137 on the pressure cone surface 135 is greater, at this moment, the force is greater than the elasticity of the outer expansion pipe 122, the notch 124 at the lower end of the outer expansion pipe 122 is opened, with the continuous opening of the lower end of the outer expansion pipe 122, the actual outer diameter of the lower end of the outer expansion pipe 122 increases, so that the inner wall of the lower end of the outer expansion pipe 122 is away from the outer wall of the automobile dust cover upper end, and finally the demolding work of the automobile dust cover end is completed.

[0062] When the automobile dust cover is completely demolded, the left half pipe 310 and the right half pipe 309 will clamp the automobile dust cover and move, and under the rotation of the first rotary motor 304 and the second rotary motor 307, the left half pipe 310 and the right half pipe 309 will clamp the automobile dust cover and change the position at multiple angles, and finally move the automobile dust cover to the between the clamping holes 511 on the upper and lower sides, and then the up and down movement of the pneumatic fingers 308 can be controlled by the lifting mechanism of the grabbing device, and when the end of the automobile dust cover needs to be cut, the automobile dust cover can be clamped by the left half pipe 310 and the right half pipe 309 so that the end of the automobile dust cover passes through the clamping hole 511 and enters the through hole 521, and at this time, the part of the end of the automobile dust cover that enters the through hole needs to be cut and trimmed, and after cutting and trimming, the flatness of the end of the automobile dust cover can be ensured, and when the part of the automobile dust cover that enters the through hole 521 needs to be cut and trimmed, the driving motor 535 can be started, and at this time, the motor shaft of the driving motor 535 will drive the lower transmission shaft 538 to rotate, and the lower transmission shaft 538 and the upper transmission shaft 541 are connected through the middle transmission shaft 547, so when the lower transmission shaft 538 rotates, the upper transmission shaft 541 rotates synchronously, so as to realize the synchronous rotation of the upper driving wheel 544 and the lower driving wheel 539, and the upper driving wheel 544 and the upper side driven wheel 516 are connected through the synchronous belt 545, and the lower driving wheel 539 and the lower side driven wheel 516 are connected through the synchronous belt 545, so when the upper driving wheel 544 and the lower driving wheel 539 rotate, the upper and lower side driven wheels 516 rotate, so as to realize the rotation of the centrifugal seat 514.

[0063] When the centrifugal seat 514 rotates, the centrifugal seat 514 will generate centrifugal force, which will directly affect the swing piece 517, and the weight of the end of the swing piece 517 without the cutting knife 523 is greater than the weight of the end of the swing piece 517 with the cutting knife 523, under the action of the centrifugal force, the end of the swing piece 517 without the cutting knife 523 will be thrown outward, and the end of the swing piece 517 with the cutting knife 523 will approach the through hole 521, and at the same time, the cutting edge of the cutting knife 523 is opposite to the through hole 521, with the approach of the cutting knife 523 to the through hole 521, the cutting knife 523 will finally cut the part of the automobile dust cover that enters the through hole 521, and with the rotation of the centrifugal seat 514 for one circle, the cutting knife 523 also completes one circle of cutting work, and such continuous cutting can stably cut off the excess part of the end of the automobile dust cover and ensure the cutting quality, and after the end of the automobile dust cover is cut and trimmed, the final grabbing device 3 will move the automobile dust cover to the position directly above the finished product box, and with the opening of the pneumatic fingers, the left half pipe 310 and the right half pipe 309 separate and loosen the automobile dust cover, and the automobile dust cover will directly fall into the finished product box to complete the collection of finished products.

[0064] In conclusion, the present application can not only inject the end of the automobile dust cover through the blow-drawing device 1, effectively ensure that the end of the automobile dust cover has the actual required thickness, and can draw out the strip-shaped plastic body for blow molding, and the molding device 2 can make the strip-shaped plastic body form the actual required shape after the blow-drawing device blows out the gas, complete the blow molding work, avoid the case that the peak and valley structure of the automobile dust cover body cannot be effectively formed by the injection molding mode, thereby realizing the injection-drawing-blow integrated molding mode, effectively avoiding the case that the product needs to be transferred between two devices due to the need to simultaneously use the blow molding process and the injection molding process, thereby causing the molding efficiency to be extremely low and the molding quality to be poor, and effectively ensuring the molding efficiency and the molding quality.

[0065] Since the clamping plate 526 is fixed with the swing piece 517 through the fastening screw 529, the position of the cutting knife 523 clamped between the clamping plate 526 and the swing piece 517 can be adjusted according to the actual requirement by loosening the fastening screw 529, and when the swing piece 517 swings under the influence of the centrifugal force, the clamping screw 530 moves, at this time, the clamping screw 530 extrudes one end of the torsion spring 534, so that the torsion spring 534 is elastic, and when the rotation of the centrifugal seat 514 is completed, the elasticity of the torsion spring 534 resets the clamping screw 530 under the clamping action of the centrifugal force, so that the swing piece 517 is reset, and at this time, the end of the swing piece 517 provided with the cutting knife is away from the through hole 521, effectively avoiding the case that the next automobile dust cover port to be cut is blocked by the cutting knife 523 and cannot pass through the through hole 521.

[0066] The upper adjusting plate 502 is provided with a plurality of uniformly distributed second long circular holes 550, the upper surface of the upper fixing plate 503 is provided with a plurality of fifth screw holes corresponding to the positions of the second long circular holes 550, the lower adjusting plate 507 is provided with a plurality of uniformly distributed third long circular holes 552, the third long circular holes 552 are perpendicular to the second long circular holes 550, the lower surface of the lower fixing plate 508 is provided with a plurality of sixth screw holes corresponding to the positions of the third long circular holes 552, the second long circular holes 550 and the fifth screw holes, and the third long circular holes 552 and the sixth screw holes can be fixed by screws, and the position fixing of the upper adjusting plate 502 and the lower adjusting plate 507 can be completed by only pressing the head of the screw on the upper surface of the upper adjusting plate 502 and the lower surface of the lower adjusting plate 507, and when the second long circular holes 550 can adjust the left and right positions of the upper adjusting plate 502, the third long circular holes 552 can adjust the front and back positions of the lower adjusting plate 507 under the condition that the second long circular holes 550 and the third long circular holes 552 are perpendicular to each other, thereby effectively changing the positions of the through holes 521 on the upper and lower sides and achieving the effect of fine-tuning the positions of the through holes 521 on the upper and lower sides, thereby further ensuring the cutting quality of the upper and lower end ports of the automobile dust cover.

[0067] The upper end of the upper transmission shaft 541 is connected with the upper end of the middle transmission shaft 547 through an upper universal joint 548 located in the upper universal hole 546, and the upper end of the lower transmission shaft 538 is connected with the lower end of the middle transmission shaft 547 through a lower universal joint 549 located in the lower universal hole 540. The upper universal joint 548 and the lower universal joint 549 can realize the effect of universal rotation, so that the stable rotation of the upper transmission shaft 541 and the lower transmission shaft 538 can be ensured even if the upper and lower side through holes 521 are not coaxial, thereby ensuring the stable rotation of the upper and lower centrifugal seats 514. The middle transmission shaft 547 can adopt a telescopic structure of an inner tube and an outer tube to realize the effect of automatically adjusting the length of the middle transmission shaft 547, thereby adapting to the change of the position of the through hole.

[0068] The upper surface of the centrifugal seat 514 is provided with a plurality of seventh screw holes which are uniformly distributed in a circle. A plurality of counterweight blocks 555 are placed on the upper surface of the centrifugal seat 514 and correspond to the positions of the seventh screw holes. The counterweight blocks 555 are provided with a counterbore 556 which penetrates the seventh screw holes. The first screw hole and the counterbore 556 can be fixed by a screw. This fixing method facilitates the disassembly and assembly of the counterweight blocks 555. The existence of the counterweight blocks 555 can effectively adjust the center of gravity of the centrifugal seat 514, avoid the deviation of the centrifugal seat 514 caused by the existence of only the swing member 517, and avoid the rotation instability of the centrifugal seat 514 caused by the center deviation, thereby affecting the cutting quality.

[0069] A limiting plug 140 matched with the fixed pipe 120 is arranged in the upper end of the fixed pipe 120. A gas inlet hole 141 is arranged in the center of the limiting plug 140. The gas inlet hole 121 penetrates the internal space of the fixed pipe 120 through the gas inlet hole 141. A return spring 143 is arranged between the outer edge of the lower surface of the limiting plug 140 and the upper end surface of the air supply pipe 142. The existence of the return spring 143 is beneficial to the return of the air blowing pipe 125.

[0070] A fixed part 146 matched with the upper surface of the screw block 113 is arranged on the upper end of the screw sleeve 145. The fixed part 146 and the screw block 113 are fixed by a screw. This fixing method facilitates the disassembly and assembly of the screw sleeve 145, thereby facilitating the maintenance and replacement of the screw sleeve 145.

[0071] The upper shaft seat 107 is provided with an upper bearing hole 147 coaxial with the screw rod 106. The upper end of the screw rod 106 penetrates the upper bearing hole 147. The lower shaft seat 108 is provided with a lower bearing hole 148 coaxial with the screw rod 106. The lower end of the screw rod 106 penetrates the lower bearing hole 148. An upper bearing 149 is arranged between the outer wall of the upper end of the screw rod 106 and the inner wall of the upper bearing hole 147. A lower bearing 150 is arranged between the outer wall of the lower end of the screw rod 106 and the inner wall of the lower bearing hole 148. The existence of the upper bearing 149 and the lower bearing 150 can ensure the stability of the screw rod 106 during rotation.

[0072] The center block 212 is provided with an upper guide slot 213 on the upper portion of the front side wall, and a lower guide slot 214 on the lower portion of the front side wall. The center block 212 is provided with a gear hole 215 in the center of the front side wall, and the upper end of the gear hole 215 is communicated with the upper guide slot 213, and the lower end of the gear hole 215 is communicated with the lower guide slot 214. The gear hole 215 is provided with a rotating gear 216 matched therewith. The left profiled block 205 is provided with a left gear rack 217 corresponding to the position of the lower guide slot 214, and the left gear rack 217 penetrates through the lower guide slot 214 and is engaged with the rotating gear 216. The right profiled block 208 is provided with a right gear rack 218 corresponding to the position of the upper guide slot 213, and the right gear rack 218 penetrates through the upper guide slot 213 and is engaged with the rotating gear 216. The center block 212 is provided with a cover plate 219 on the front side wall, and the cover plate 219 covers the front slot of the upper guide slot 213, the front slot of the lower guide slot 214 and the front hole of the gear hole 215. The center block 212 and the cover plate 219 are fixed by screws. The engagement between the left gear rack 217, the right gear rack 218 and the rotating gear 216 can ensure the stability of the opening and closing of the left profiled block 205 and the right profiled block 208 to further ensure the blow molding quality.

[0073] The right side of the frame 8 is provided with a right mounting port 220 matched with the right cylinder 207, and the left side of the frame 8 is provided with a left mounting port 221 matched with the left cylinder 204. The right mounting port 220 is beneficial to the installation of the right cylinder 207. When the length of the right cylinder 207 is too long, the right cylinder 207 can be led out to the outside through the right mounting port 220 to ensure that the installation work of the right cylinder 207 can be normally carried out. The left mounting port 221 is beneficial to the installation of the left cylinder 204. When the length of the left cylinder 204 is too long, the left cylinder 204 can be led out to the outside through the left mounting port 221 to ensure that the installation work of the left cylinder 204 can be normally carried out.

[0074] The right side of the pneumatic finger 308 is provided with a right semicircular pipe 309, and the left side of the pneumatic finger 308 is provided with a left semicircular pipe 310 opposite to the right semicircular pipe 309. The left semicircular pipe 310 and the right semicircular pipe 309 are surrounded to form a grabbing pipe 311. The inner walls of the left semicircular pipe 310 and the right semicircular pipe 309 are arc-shaped surfaces, which can effectively and uniformly surround the automobile dust cover to avoid damaging the outer wall of the automobile dust cover when the automobile dust cover is clamped.

[0075] The left half circular tube 310 is provided with left notches 312 symmetrically on the front and back sides, and the right half circular tube 309 is provided with right notches 313 opposite to the left notches 312, and the left notches 312 and the right notches 313 form a pressure release port 314. When the automobile dust cover is clamped, if the clamped space is a closed space, the automobile dust cover will always bear high pressure during the clamping process. The existence of the pressure release port 314 can make the automobile dust cover release pressure in the first time by deforming towards the pressure release port 314 when the automobile dust cover is clamped, so as to avoid the irreversible damage caused by long-term high pressure bearing of the automobile dust cover.

[0076] The lifting mechanism further comprises a stand 315 provided on the lifting mechanism mounting plate 301, an upper seat plate 320 is provided on the upper end of the stand 315, a lower seat plate 316 is provided on the lower end of the stand 315, a guide plate 317 is provided between the right end of the upper seat plate 320 and the right end of the lower seat plate 316, a square hole 318 matched with the guide plate 317 is provided on the moving seat 302, a lifting cylinder mounting seat 319 is provided on the upper part of the stand 315, a lifting cylinder matched with the lifting cylinder mounting seat 319 is provided on the lifting cylinder mounting seat 319, the lower end of the piston rod of the lifting cylinder is provided on the upper middle part of the moving seat 302, and the matching between the four side walls of the guide plate 317 and the inner walls of the square hole 318 can realize the guiding effect of the upward and downward movement of the moving seat 302, so as to further ensure the stability of the upward and downward movement of the clamped automobile dust cover.

Claims

1. A blow molding machine for automotive dust covers, comprising a machine body, a screw extruder disposed on the upper surface of the machine body, and a frame disposed on the front side of the machine body, wherein the front end of the screw extruder is provided with a matching extrusion head, the extrusion end of the extrusion head facing upwards, characterized in that: The inner rear wall of the frame is provided with a blow-pull device located directly above the extruder head; the inner rear wall of the frame is provided with a forming device located between the extruder head and the blow-pull device; the inner left wall of the frame is provided with a gripping device; the inner left wall of the frame is provided with a cutting device located in front of the gripping device; the gap between the blow-pull device and the extruder head corresponds to the position of the gripping device; the blow-pull device includes a first slide rail base plate provided on the inner rear wall of the frame; the left and right sides of the front side wall of the first slide rail base plate are provided with symmetrical first slide rails; a motor mounting seat is provided at the center of the upper end of the first slide rail base plate; a servo motor matching it is provided on the motor mounting seat; the lower end of the motor shaft of the servo motor is connected to a lead screw through a first coupling; the first A slide rail base plate has an upper shaft seat located between the upper ends of the first slide rails on the left and right sides on its front side wall; a lower shaft seat located between the lower ends of the first slide rails on the left and right sides on its front side wall; the upper shaft seat matches the upper end of the lead screw, and the lower shaft seat matches the lower end of the lead screw; a lifting seat is provided on the front side of the first slide rail base plate; first sliders matching the first slide rails are provided on the left and right sides of the rear side wall of the lifting seat; symmetrical demolding cylinders are provided on the left and right sides of the upper surface of the lifting seat, and the lower ends of the piston rods of the demolding cylinders pass downward through the lifting seat; the lower ends of the piston rods of the demolding cylinders on the left and right sides are connected by a connecting plate; a demolding mechanism matching the connecting plate is provided; a screw block matching the lead screw is provided in the middle of the rear side wall of the lifting seat.

2. The injection stretch blow molding machine for an automotive dust cover according to claim 1, characterized in that: The demolding mechanism includes a fixing hole located in the middle of the connecting plate; a movable tube coaxial with the fixing hole is provided below the connecting plate; the upper end of the movable tube passes upward through the fixing hole and is screwed with a limiting sleeve that fits against the upper surface of the connecting plate; the upper outer wall of the movable tube has an annular step that fits against the lower surface of the connecting plate; the lower surface of the lifting seat has an air supply seat corresponding to the position of the movable tube; the lower surface of the air supply seat has a connecting hole at its center; a matching fixing tube is provided in the connecting hole; the outer wall of the air supply seat has an air inlet hole that communicates with the upper end of the fixing tube; the lower end of the fixing tube passes through... The upper end of the movable tube is inserted into the movable tube; the lower end of the fixed tube is provided with an expanding tube that communicates with it; the outer wall of the expanding tube is provided with several elastic holes that communicate with its internal space; the lower end of the expanding tube is provided with several cuts that communicate with the elastic holes, and the expanding tube closes the cuts under its own elasticity; an air blowing tube is provided in the lower part of the fixed tube; the lower end of the air blowing tube is inserted downward into the expanding tube and is provided with a shaping structure that matches the lower end of the expanding tube; the upper part of the movable tube is provided with a traction structure that matches the air blowing tube; the traction structure includes a screw hole provided on the upper outer wall of the movable tube, and the screw hole is connected to the interior of the movable tube. The space is interconnected; the lower part of the movable tube is provided with a first elongated hole corresponding to the position of the screw hole, and the first elongated hole is interconnected with the internal space of the movable tube; the upper outer wall of the air blowing tube is provided with a positioning groove corresponding to the position of the first elongated hole; a matching traction screw is screwed into the screw hole, and the head of the traction screw is located outside the movable tube; the inner end of the traction screw passes through the first elongated hole and enters the positioning groove; the shaping structure includes a shaping head provided at the lower end of the air blowing tube; the inner wall of the lower end of the movable tube is provided with a limiting cone surface that is narrower at the top and wider at the bottom; the outer wall of the lower end of the expanding tube is provided with an outer cone that is narrower at the top and wider at the bottom. The outer conical surface and the limiting conical surface have an outward expansion gap; the inner wall of the lower end of the outward expansion tube is provided with an annular sealing groove; the upper side wall of the sealing groove is a pressure-bearing conical surface that is narrower at the top and wider at the bottom; the lower part of the air blowing tube is fitted with a matching movable sleeve; the lower end of the movable sleeve extends downward into a conical tube that is narrower at the top and wider at the bottom, and the outer wall of the conical tube is in contact with the pressure-bearing conical surface; the lower end of the conical tube extends downward into a sealing sleeve that matches the sealing groove; the sealing sleeve is fitted over the shaping head; the upper outer wall of the shaping head is in contact with the inner wall of the sealing sleeve; the upper outer wall of the shaping head is provided with a pressure-applying conical surface that is narrower at the top and wider at the bottom.

3. The injection stretch blow molding machine for an automotive dust cover according to claim 2, characterized in that: A matching limiting plug is provided inside the upper end of the fixed tube; a vent hole is provided in the center of the limiting plug; the air inlet is connected to the internal space of the fixed tube through the vent hole; a return spring is provided between the outer edge of the lower surface of the limiting plug and the outer edge of the upper end of the air blowing tube; a longitudinally penetrating central hole is provided in the center of the screw block; a matching screw sleeve is provided in the central hole; the screw sleeve is screwed to the outside of the lead screw; a fixing part that fits against the upper surface of the screw block is provided at the upper end of the screw sleeve; the fixing part and the screw block are fixed by screws; an upper bearing hole coaxial with the lead screw is provided on the upper shaft seat, and the upper end of the lead screw passes through the upper bearing hole; a lower bearing hole coaxial with the lead screw is provided on the lower shaft seat, and the lower end of the lead screw passes through the lower bearing hole; an upper bearing is provided between the outer wall of the upper end of the lead screw and the inner wall of the upper bearing hole; a lower bearing is provided between the outer wall of the lower end of the lead screw and the inner wall of the lower bearing hole.

4. The injection stretch blow molding machine for an automotive dust cover according to claim 1, characterized in that: The forming device includes a second slide rail base plate disposed on the inner rear wall of the frame; the upper and lower sides of the front side wall of the second slide rail base plate are provided with symmetrical second slide rails; the left front side wall of the second slide rail base plate is provided with a left cylinder fixing seat; the left cylinder fixing seat is provided with a matching left cylinder; the right end of the piston rod of the left cylinder is provided with a left forming block located in front of the second slide rail base plate; the right front side wall of the right end of the second slide rail base plate is provided with a right cylinder fixing seat; the right cylinder fixing seat is provided with a matching right cylinder; the left end of the piston rod of the right cylinder is provided with a right forming block; the upper and lower sides of the rear side wall of the left forming block and the upper and lower sides of the rear side wall of the right forming block are provided with second sliders matching the second slide rails; the right side wall of the left forming block is provided with a left cavity; the left side wall of the right forming block is provided with a right cavity opposite to the left cavity; a center block is provided at the center of the front side wall of the second slide rail base plate; the center block An upper guide groove is provided on the upper part of the front sidewall; a lower guide groove is provided on the lower part of the front sidewall of the center block; a gear hole is provided in the center of the front sidewall of the center block; the upper end of the gear hole communicates with the upper guide groove, and the lower end of the gear hole communicates with the lower guide groove; a matching rotating gear is provided in the gear hole; a left rack corresponding to the position of the lower guide groove is provided on the rear sidewall of the left forming block, the left rack passes through the lower guide groove and meshes with the rotating gear; a right rack corresponding to the position of the upper guide groove is provided on the rear sidewall of the right forming block, the right rack passes through the upper guide groove and meshes with the rotating gear; a cover plate is provided on the front sidewall of the center block, the cover plate covers the front opening of the upper guide groove, the front opening of the lower guide groove, and the front opening of the gear hole; the center block and the cover plate are fixed together by screws; a right mounting port matching the right cylinder is provided on the right side of the frame; a left mounting port matching the left cylinder is provided on the left side of the frame.

5. The injection stretch blow molding machine for an automotive dust cover according to claim 1, characterized in that: The gripping device includes a lifting mechanism mounting plate disposed on the inner left side of the frame; the lifting mechanism mounting plate is provided with a matching lifting mechanism; the lifting mechanism includes a movable seat; a first rotary motor mounting seat is disposed on the right side wall of the movable seat; a first rotary motor matching the first rotary motor is disposed on the first rotary motor mounting seat; an extension arm is disposed at the lower end of the motor shaft of the first rotary motor; a second rotary motor mounting seat is disposed on the upper surface of the front end of the extension arm; a second rotary motor matching the second rotary motor is disposed on the second rotary motor mounting seat; a pneumatic finger is disposed at the lower end of the motor shaft of the second rotary motor; a right semi-circular tube is disposed on the right gripper of the pneumatic finger; a right semi-circular tube is disposed on the left gripper of the pneumatic finger. The lifting mechanism includes a left semicircular tube and a right semicircular tube that enclose each other to form a gripping tube. The left semicircular tube has symmetrical left notches on its front and rear sides. The right semicircular tube has right notches on its front and rear sides that are opposite to the left notches. The left and right notches enclose each other to form a pressure relief port. The lifting mechanism also includes a frame mounted on a lifting mechanism mounting plate. The upper end of the frame has an upper seat plate, and the lower end of the frame has a lower seat plate. A guide plate is provided between the right end of the upper seat plate and the right end of the lower seat plate. The movable seat has a square hole that matches the guide plate. The upper part of the frame has a lifting cylinder mounting seat. The lifting cylinder mounting seat has a matching lifting cylinder, and the lower end of the piston rod of the lifting cylinder is located in the middle of the upper end of the movable seat.

6. The injection stretch blow molding machine for an automotive dust cover according to claim 1, characterized in that: The cutting device includes an upper fixed frame mounted on the inner left side of the frame; an upper adjusting plate at the lower end of the upper fixed frame; a matching upper fixed plate on the lower surface of the upper adjusting plate; an upper positioning plate directly below the upper fixed plate; several evenly distributed upper support rods between the outer edge of the lower surface of the upper fixed plate and the outer edge of the upper surface of the upper positioning plate; a lower fixed frame located directly below the upper fixed frame on the inner left side of the frame; a lower adjusting plate corresponding to the position of the upper adjusting plate at the upper end of the lower fixed frame; a matching lower fixed plate on the upper surface of the lower adjusting plate; a lower positioning plate located directly below the upper positioning plate above the lower fixed plate; several evenly distributed lower support rods between the outer edge of the lower surface of the lower positioning plate and the outer edge of the upper surface of the lower fixed plate; a locking hole at the rear of both the upper and lower positioning plates; a centrifugal cutting mechanism corresponding to the locking hole on the lower rear surface of the upper fixed plate and the upper rear surface of the lower fixed plate; and a driving mechanism matching the centrifugal cutting mechanism at the front of the lower fixed plate.

7. The injection stretch blow molding machine for an automotive dust cover according to claim 6, characterized in that: The centrifugal cutting mechanism includes auxiliary bearing seats located on the lower rear surface of the upper fixed plate and the upper rear surface of the lower fixed plate; an auxiliary bearing hole is provided at the center of the auxiliary bearing seat; a matching centrifugal seat is provided inside the auxiliary bearing hole; an auxiliary bearing is provided between the lower outer wall of the centrifugal seat and the inner wall of the auxiliary bearing hole; the upper end of the centrifugal seat extends upward to the outside of the auxiliary bearing hole and is provided with a driven wheel; an arc-shaped oscillating member is provided on one side of the upper surface of the centrifugal seat; a positioning hole is provided in the middle of the oscillating member; a first screw hole corresponding to the position of the positioning hole is provided on the upper surface of the centrifugal seat; a positioning screw passes downward through the positioning hole and is screwed into the first screw hole, with the head of the positioning screw located above the oscillating member; a longitudinal through hole is provided at the center of the centrifugal seat; a cutting blade is provided at one end of the oscillating member facing the through hole; the weight of the end of the oscillating member without the cutting blade is greater than the weight of the end of the oscillating member with the cutting blade; a reset structure is provided on the oscillating member; the reset structure includes a... The end of the swing member has a second screw hole and a third screw hole, with the third screw hole adjacent to the positioning hole; a clamping plate is provided above one end of the swing member; the tail of the cutting blade is clamped between the lower surface of the clamping plate and the upper surface of the end of the swing member; the clamping plate has a first through hole corresponding to the position of the second screw hole and a second through hole corresponding to the position of the third screw hole; a fastening screw passes downward through the first through hole and is screwed into the second screw hole, with the head of the fastening screw pressing against the upper surface of the clamping plate; a locking screw passes downward through the second through hole and is screwed into the third screw hole, with the head of the locking screw located above the clamping plate; the swing member has a fourth screw hole; a reset screw is screwed into the fourth screw hole, with the head of the reset screw located above the swing member; an adjusting nut that fits against the upper surface of the swing member is screwed onto the reset screw; a torsion spring is provided between the head of the reset screw and the adjusting nut, outside the reset screw; one end of the torsion spring presses against the screw body of the locking screw, and the other end of the torsion spring is fixed to the centrifugal base.

8. The injection stretch blow molding machine for an automotive dust cover according to claim 7, characterized in that: The driving mechanism includes a drive motor located directly below the front of the lower fixed plate. Several evenly distributed connecting rods are provided between the outer edge of the upper surface of the drive motor and the lower surface of the front of the lower fixed plate. A lower transmission shaft is connected to the upper end of the motor shaft via a second coupling. A lower drive wheel, corresponding to the position of the driven wheel located on the lower side, is located on the upper part of the lower transmission shaft. A lower universal joint, corresponding to the position of the lower transmission shaft, is located on the front of the lower positioning plate. An upper transmission shaft is provided between the front of the upper fixed part and the front of the upper positioning plate. A rotating hole, corresponding to the position of the upper transmission shaft, is located on the front of the upper fixed plate, and the upper end of the upper transmission shaft passes upwards into the rotating hole. A rotary bearing is provided between the outer wall of the upper end of the upper drive shaft and the inner wall of the rotating hole; an upper drive wheel is provided on the upper drive shaft, corresponding to the position of the driven wheel on the upper side; the upper drive wheel and the upper driven wheel, and the lower drive wheel and the lower driven wheel are all connected by a synchronous belt; an upper universal joint is provided at the front of the upper positioning plate, corresponding to the position of the upper drive shaft; a middle drive shaft is provided between the upper universal joint and the lower universal joint; the lower end of the upper drive shaft and the upper end of the middle drive shaft are connected by an upper universal joint located in the upper universal joint; the upper end of the lower drive shaft and the lower end of the middle drive shaft are connected by a lower universal joint located in the lower universal joint.

9. The injection stretch blow molding machine for an automotive dust cover according to claim 8, characterized in that: The upper adjusting plate is provided with a plurality of evenly distributed second elongated oval holes; the upper fixed plate is provided with a plurality of fifth screw holes corresponding to the positions of the second elongated oval holes on its upper surface; the lower adjusting plate is provided with a plurality of evenly distributed third elongated oval holes; the third elongated oval holes are perpendicular to the second elongated oval holes; the lower fixed plate is provided with a plurality of sixth screw holes corresponding to the positions of the third elongated oval holes on its lower surface; the centrifuge seat is provided with a plurality of seventh screw holes evenly distributed in a circle on its upper surface; a plurality of counterweights corresponding to the positions of the seventh screw holes are placed on the upper surface of the centrifuge seat; the counterweights are provided with countersunk holes that communicate with the seventh screw holes.

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