CN118003533A - Plastic injection molding equipment and molding method thereof - Google Patents
Plastic injection molding equipment and molding method thereof Download PDFInfo
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- CN118003533A CN118003533A CN202410297247.8A CN202410297247A CN118003533A CN 118003533 A CN118003533 A CN 118003533A CN 202410297247 A CN202410297247 A CN 202410297247A CN 118003533 A CN118003533 A CN 118003533A
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- 239000004033 plastic Substances 0.000 title claims abstract description 44
- 229920003023 plastic Polymers 0.000 title claims abstract description 44
- 238000001746 injection moulding Methods 0.000 title claims abstract description 43
- 238000000465 moulding Methods 0.000 title abstract description 11
- 238000000034 method Methods 0.000 title description 3
- 238000001816 cooling Methods 0.000 claims abstract description 87
- 239000002994 raw material Substances 0.000 claims abstract description 53
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000002991 molded plastic Substances 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 89
- 230000005540 biological transmission Effects 0.000 claims description 35
- 210000001503 joint Anatomy 0.000 claims description 25
- 238000003032 molecular docking Methods 0.000 claims description 20
- 238000007493 shaping process Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010137 moulding (plastic) Methods 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The invention discloses plastic injection molding equipment, which belongs to the technical field of plastic molding and comprises a main frame device, wherein the main frame device is used for molding raw materials, an injection molding device is arranged on the main frame device and is used for injecting the raw materials into the main frame device, a taking-out device is arranged on the main frame device and is used for taking out molded plastic molded parts from the main frame device, and a shell is arranged outside the main frame device. The upper die mechanism provided by the invention can be automatically attached to the lower die and the material lifting ring, and is compressed by the compressing disc after the attachment is finished, and the formed part is cooled by the cooling cylinder which is automatically closed after the forming is finished, so that the degree of automation is high; the lifting ring on the lifting ring mechanism is positioned in the lower die when injection molding is finished, so that the separation of the molded part and the lower die can be easily realized through the lifting of the lifting ring after molding cooling is finished, and the molded part after molding is transferred to the outside of the device through the taking-out device, so that the demolding efficiency is high.
Description
Technical Field
The invention relates to the technical field of plastic molding, in particular to plastic injection molding equipment and a molding method thereof.
Background
The injection molding process of the plastic mainly comprises the steps of die assembly, filling, cooling, die opening, die stripping and the like. The quality of the work of these stages directly determines the quality of the formation of the article and these stages are a complete and continuous process. Firstly, filling raw materials into a mould, then closing the mould, then cooling and forming the raw materials, finally opening the mould to demould and take out a finished product, and carrying out an injection molding process usually through a manual auxiliary machine, wherein a large amount of manpower is required, and the degree of automation is usually not enough and is influenced by the manpower at the same time, so that a certain error exists. The Chinese patent publication No. CN106457632B discloses an injection molding device, the prior art uses two half films to carry out die assembly injection molding, but the prior art cannot realize automatic injection of raw materials, cannot carry out automatic cooling after injection molding is finished, cannot realize continuous injection molding process, and has poor automation degree.
Disclosure of Invention
Aiming at the technical problems, the invention adopts the following technical scheme: the utility model provides a plastics injection moulding equipment, includes the body frame device, the body frame device include the support body, the body frame device be used for carrying out shaping to the raw materials, the body frame device on be provided with injection molding device, injection molding device including rotating electrical machines, rotating electrical machines and support body fixed mounting, injection molding device be arranged in injecting the raw materials into the body frame device, the body frame device on be provided with take-out device, take-out device include the rotating turret, the rotating turret rotates and installs on the support body, take-out device be arranged in taking out the plastics shaping piece after the shaping from the body frame device, the body frame device be provided with the shell outward.
Further, the main frame device include fixed mounting on the support body's grudging post, slide rail, lower mould and cross rail, grudging post top fixed mounting has a motor, rotates on the grudging post and installs the lead screw, a motor is used for driving the lead screw rotation, lead screw bottom fixed mounting has lead screw bevel gear, lead screw bevel gear drives butt joint gear and centering gear through gear drive and belt drive and rotates, the lead screw lower part has one section unthreaded part, is provided with mould mechanism on the slide rail, is provided with cooling body on the support body.
Further, go up mould mechanism including slidable mounting on the slide rail go up mould and compress tightly the dish, go up the mould and compress tightly the spring between the dish and be used for keeping both intervals, slidable mounting has down the depression bar on the dish that compresses tightly, the spring between depression bar and the dish that compresses tightly is used for keeping down the depression bar and compresses tightly the distance between the dish, the dish front portion that compresses tightly has the pressure disk, the circular slot diameter at pressure disk and last mould top is the same, upward be provided with the internal thread on the mould, form the screw drive through the internal thread and lead screw, after last mould descends to in the lower mould, compress tightly the dish and dock gear engagement.
Further, the cooling mechanism comprises two cooling cylinders which are slidably mounted on the transverse rail, the two cooling cylinders are matched through a gear rack at the bottom to realize simultaneous opposite movement, a spring between the cooling cylinders and a frame body is used for driving the cooling cylinders to reset, a water cooling pipe is arranged in the cooling cylinders, a rack frame can slide up and down relative to the cooling cylinders, the spring between the rack frame and the cooling cylinders is used for keeping the distance between the rack frame and the cooling cylinders, the elastic force of the spring between the pressing rod and the pressing plate is larger than that of the spring between the rack frame and the cooling cylinders, after the rack frame is pressed down by the pressing rod, the rack frame is meshed with a centering gear, the inner diameter of the cooling cylinders is identical to the outer diameter of a lower die, and the cooling cylinders are attached to the lower die when the cooling is performed.
After the injection molding device injects plastic raw materials into the lower die, and the lifting ring is located in the lower die at the moment, the top motor rotates to drive the screw rod to rotate, thereby drive the upper die to descend, the upper die drives the pressing disc to descend simultaneously through the spring connected between the pressing disc, after the upper die descends into the lower die, the pressing disc starts to be meshed with the butt-joint gear at the moment, the screw rod rotates to drive the screw rod bevel gear to rotate simultaneously, the butt-joint gear is driven to rotate through the gear transmission and the belt transmission, the butt-joint gear rotates to drive the pressing disc to descend, the spring between the upper die and the pressing disc starts to be compressed, the pressing disc starts to be pressed onto the upper die, the upper die is pressed tightly, the lower pressing rod is driven to descend simultaneously, the rack frame is pressed downwards after the lower pressing rod is contacted with the rack frame, the spring between the cooling cylinder and the rack frame is compressed, then the rack frame is meshed with the centering gear, the centering gear is driven to rotate through the gear transmission and the centering gear transmission, the rack frame and the cooling cylinder are driven to move towards the lower die, and finally the cooling cylinder wraps the lower die.
Because the lower part of the screw rod is provided with a section without threads, after the upper die descends to the lowest part, the top motor continuously rotates and can not drive the upper die to continuously descend, and meanwhile, the rack frame can be pressed down after the pressing disc descends for a certain distance, so that the plastic raw material in the lower die has sufficient molding time before the cooling cylinder is attached.
After the forming cooling is finished, the top motor reversely rotates to drive the upper die to ascend, so as to drive the pressing disc to ascend, and the upper die, the pressing disc, the pressing rod, the rack frame and the cooling cylinder return to the initial position under the rebound force of springs between the upper die and the pressing disc, between the rack frame and the cooling cylinder, and between the cooling cylinder and the frame body.
Further, the injection molding device comprises a transverse rod which is slidably arranged on the frame body, a rack section is arranged on the transverse rod, a rotating motor drives the transverse rod to slide through gear rack transmission, a ratchet bar is slidably arranged on the transverse rod, a spring between the transverse rod and the ratchet bar is used for keeping the distance between the transverse rod and the ratchet bar, a ratchet wheel is meshed on the ratchet bar and drives a driving wheel to rotate through belt transmission, the rotating motor drives a raw material box to slide towards a lower die through gear transmission, a feeding pipe is arranged on the raw material box, and plastic raw materials are filled in the raw material box.
The rotating motor rotates and drives the transverse rod to slide leftwards through the gear rack transmission, so that the ratchet rack is driven to rotate through the ratchet rack, the driving wheel is driven to rotate thirty degrees, meanwhile, the rotating motor drives the raw material box to move forwards through the gear transmission, the feeding pipe is driven to stretch into the upper portion of the lower die, plastics are injected into the lower die, when the rotating motor rotates reversely, the raw material box is driven to return to the initial position, meanwhile, the transverse rod is driven to slide rightwards, the ratchet rack is driven to slide rightwards, at the moment, the ratchet rack can not drive the ratchet rack to rotate, the ratchet rack can be pressed down, a spring between the ratchet rack and the transverse rod is compressed, after the ratchet rack passes through the ratchet rack, the spring rebounds, the ratchet rack is driven to return to the initial position, namely, when the taking-out device rotates, the raw material box is fed into the lower die, and when the raw material box returns, the taking-out device does not rotate.
Further, the taking-out device comprises a central motor fixedly arranged on a rotating frame, the rotating frame is fixedly arranged with the driving wheel, the central motor drives the large bevel gear to rotate, and six groups of lifting ring mechanisms are arranged on the rotating frame.
Further, the lifting ring mechanism comprises a rotating screw rod rotatably mounted on the rotating frame, the rotating screw rod drives the lifting ring to slide along the rotating frame through thread transmission, the lifting ring is located in the lower die during forming action, a sliding barrel is slidably mounted on the lower portion of the rotating screw rod, a butt bevel gear is fixedly mounted at the bottom of the sliding barrel, a butt joint rod is rotatably mounted on the sliding barrel, and a spring between the butt joint rod and the rotating frame is used for keeping the distance between the butt joint rod and the rotating frame.
Further, the frame body on fixed mounting have trapezoidal fixture block, trapezoidal fixture block lower part is provided with the recess that is used for the clamping to push down the butt joint pole, when pushing down the butt joint pole and being arranged in the recess of trapezoidal fixture block, butt joint bevel gear and big bevel gear meshing.
When the upper die and the lower die finish forming the raw materials, the central motor rotates to drive the large bevel gear to rotate, thereby driving the rotating screw rod to rotate, driving the lifting ring to lift with the formed plastic forming part together, enabling the plastic forming part to leave the lower die, at the moment, the driving wheel rotates to drive the rotating frame to rotate, and after the pressing butt joint rod and the trapezoid clamping block are separated, the spring between the pressing butt joint rod and the rotating frame contracts to enable the butt joint bevel gear to be separated from the large bevel gear, the rotating frame rotates to drive the plastic forming part to leave, and meanwhile, the pressing butt joint rod and the trapezoid clamping block of the next lifting ring mechanism are matched, and the lifting ring is lowered into the lower die again to prepare for the next forming operation.
A plastic injection molding method is characterized in that: comprises the following steps:
Firstly, adding plastic raw materials into a lower die through a raw material box; the material lifting ring descends into the lower die; the upper die descends to be attached to the material lifting ring and the lower die; the cooling cylinder is attached to the lower die, and the lower die is cooled; the upper die rises; taking out the molded plastic molded part by the material lifting ring; the rotating frame rotates to drive the plastic forming piece to leave.
Compared with the prior art, the invention has the beneficial effects that: (1) The upper die mechanism provided by the invention can be automatically attached to the lower die and the material lifting ring, and is compressed by the compressing disc after the attachment is finished, and the formed part is cooled by the cooling cylinder which is automatically closed after the forming is finished, so that the degree of automation is high; (2) The lifting ring on the lifting ring mechanism is positioned in the lower die during injection molding, so that after the molding and cooling are finished, the lifting ring can easily separate the molded part from the lower die through lifting, and the molded part is transferred to the outside of the device through the taking-out device, so that the demolding efficiency is high; (3) The raw material box is driven to advance simultaneously to supplement raw materials into the lower die when the taking-out device rotates, namely, the raw material box is positioned at an initial position during forming operation when the taking-out device does not rotate, namely, automatic injection molding is performed during taking out, and the degree of automation is high.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention (with housing).
Fig. 2 is a schematic view of the overall structure of the present invention (demolding state).
Fig. 3 is a schematic view of the overall structure of the present invention (molded cooling state).
Fig. 4 is a schematic structural diagram of a main frame device of the present invention.
Fig. 5 is a schematic diagram of a main frame device according to the second embodiment of the present invention.
Fig. 6 is a schematic diagram of a main frame device according to the third embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a main frame device of the present invention.
FIG. 8 is a schematic view of an injection molding apparatus according to the present invention.
Fig. 9 is a schematic view of a withdrawing device according to the present invention.
Fig. 10 is a partially enlarged schematic view of fig. 9 at a.
FIG. 11 is a schematic view of the mating of the push-down docking rod and the sliding barrel of the present invention.
Fig. 12 is a schematic diagram of a withdrawing device according to the present invention.
Fig. 13 is a schematic diagram of the cooperation of the trapezoidal clamping block and the pressing butt-joint rod according to the present invention.
Fig. 14 is a partially enlarged schematic view at B in fig. 13.
Reference numerals: 101-a frame body; 102-a vertical frame; 103-a screw rod; 104-top motor; 105-slide rail; 106, upper die; 107-a compact disc; 108-lower die; 109-a docking gear; 110-a centering gear; 111-a rack frame; 112-cooling cylinder; 113-transverse rails; 114-lead screw bevel gear; 115-pressing down the rod; 201-a rotating motor; 202-a traverse bar; 203-a ratchet bar; 204-ratchet wheel; 205-a driving wheel; 206-a raw material box; 207-feeding pipe; 301-rotating frame; 302, lifting a material ring; 303-rotating a screw rod; 304-large bevel gears; 305-pressing down the butt joint rod; 306-a sliding cylinder; 307-butting bevel gears; 308-a central motor; 401-trapezoidal clamping blocks; 5-a housing; 6-plastic molding.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings.
Examples: referring to fig. 1 to 14, a plastic injection molding apparatus includes a main frame device including a frame body 101, the main frame device being used for molding a raw material, the main frame device being provided with an injection molding device thereon, the injection molding device including a rotating motor 201, the rotating motor 201 being fixedly mounted with the frame body 101, the injection molding device being used for injecting the raw material into the main frame device, the main frame device being provided with a take-out device thereon, the take-out device including a rotating frame 301, the rotating frame 301 being rotatably mounted on the frame body 101, the take-out device being used for taking out a molded plastic molded part 6 from the main frame device, the main frame device being provided with a housing 5 outside.
As shown in fig. 1 to 7, the main frame device comprises a vertical frame 102, a sliding rail 105, a lower die 108 and a transverse rail 113 which are fixedly installed on a frame body 101, a top motor 104 is fixedly installed at the top of the vertical frame 102, a screw rod 103 is rotatably installed on the vertical frame 102, the top motor 104 is used for driving the screw rod 103 to rotate, a screw rod bevel gear 114 is fixedly installed at the bottom of the screw rod 103, the screw rod bevel gear 114 drives a butt joint gear 109 and a centering gear 110 to rotate through gear transmission and belt transmission, a section of non-threaded part is arranged at the lower part of the screw rod 103, an upper die mechanism is arranged on the sliding rail 105, and a cooling mechanism is arranged on the frame body 101.
As shown in fig. 4 to 7, the upper die mechanism comprises an upper die 106 and a pressing disc 107 which are slidably mounted on a slide rail 105, a spring between the upper die 106 and the pressing disc 107 is used for keeping a distance between the upper die 106 and the pressing disc 107, a lower pressing rod 115 is slidably mounted on the pressing disc 107, a spring between the lower pressing rod 115 and the pressing disc 107 is used for keeping a distance between the lower pressing rod 115 and the pressing disc 107, a pressing disc is arranged at the front part of the pressing disc 107, the diameter of a circular groove at the top of the upper die 106 is the same as that of a circular groove at the top of the upper die 106, an internal thread is arranged on the upper die 106, and screw transmission is formed between the internal thread and the screw rod 103, and when the upper die 106 descends into the lower die 108, the pressing disc 107 is meshed with the butt joint gear 109.
As shown in fig. 4 to 7, the cooling mechanism comprises two cooling drums 112 slidably mounted on a transverse rail 113, the two cooling drums 112 are matched through a gear rack at the bottom to realize simultaneous opposite movement, a spring between the cooling drum 112 and the frame 101 is used for driving the cooling drum 112 to return, a water cooling pipe is arranged in the cooling drum 112, a rack frame 111 can slide up and down relative to the cooling drum 112, the spring between the rack frame 111 and the cooling drum 112 is used for keeping the distance between the rack frame 111 and the cooling drum 112, the elasticity of the spring between a pressing rod 115 and a pressing disc 107 is larger than the elasticity of the spring between the rack frame 111 and the cooling drum 112, when the rack frame 111 is pressed down by the pressing rod 115, the rack frame 111 is meshed with the centering gear 110, the inner diameter of the cooling drum 112 is the same as the outer diameter of the lower die 108, and when the cooling drum 112 is in cooling, the cooling drum 112 is attached to the lower die 108.
After the injection molding device injects plastic raw materials into the lower die 108, and the lifting ring 302 is located in the lower die 108 at this time, the top motor 104 rotates to drive the screw rod 103 to rotate, thereby driving the upper die 106 to descend, the upper die 106 drives the pressing disc 107 to descend simultaneously through a spring connected with the pressing disc 107, after the upper die 106 descends into the lower die 108, the pressing disc 107 starts to mesh with the docking gear 109 at this time, because the screw rod 103 rotates to drive the screw rod bevel gear 114 simultaneously, and simultaneously drives the docking gear 109 to rotate through gear transmission and belt transmission, the docking gear 109 starts to rotate to drive the pressing disc 107 to descend, the spring between the upper die 106 and the pressing disc 107 starts to be compressed, the pressing disc 107 starts to press the upper die 106, and simultaneously starts to drive the lower pressing rod 115 to descend, after the lower pressing rod 115 contacts the rack frame 111, the rack frame 111 is pressed down, the spring between the cooling cylinder 112 and the rack frame 111 is compressed, then the rack frame 111 meshes with the centering gear 110, because the screw rod bevel gear 114 rotates through gear transmission and belt transmission to drive the centering gear 110, the centering gear 110 rotates, the rack frame 111 and the cooling cylinder 108 moves towards the cooling cylinder 112, and finally cools the cooling cylinder 112, and the cooling cylinder 112 is cooled down, and the product is cooled down and the product is formed by the cooling cylinder 112.
Since the screw rod 103 has a section of unthreaded lower part, so upper die 106 descends to the lowest, top motor 104 continues to rotate and can not drive upper die 106 to descend continuously, and rack frame 111 can be pressed down after compressing disc 107 descends for a certain distance, so plastic raw material in lower die 108 has sufficient molding time before cooling cylinder 112 is attached.
After the forming cooling is completed, the top motor 104 reversely rotates to drive the upper die 106 to ascend, so as to drive the pressing disc 107 to ascend, and the upper die 106, the pressing disc 107, the pressing rod 115, the rack frame 111 and the cooling cylinder 112 return to the initial positions under the resilience force of the springs between the upper die 106 and the pressing disc 107, between the rack frame 111 and the cooling cylinder 112, between the pressing rod 115 and the pressing disc 107, and between the cooling cylinder 112 and the frame 101.
As shown in fig. 8, the injection molding apparatus includes a traverse bar 202 slidably mounted on a frame 101, a rack section is provided on the traverse bar 202, a rotation motor 201 drives the traverse bar 202 to slide through rack-and-pinion transmission, a ratchet bar 203 is slidably mounted on the traverse bar 202, a spring between the traverse bar 202 and the ratchet bar 203 is used for maintaining a distance between the traverse bar 202 and the ratchet bar 203, a ratchet 204 is engaged on the ratchet bar 203, the ratchet 204 drives a transmission wheel 205 to rotate through belt transmission, the rotation motor 201 drives a raw material box 206 to slide toward a lower die 108 through gear transmission, a feed pipe 207 is provided on the raw material box 206, and plastic raw materials are contained in the raw material box 206.
The rotation motor 201 rotates and drives the transverse bar 202 to slide leftwards through the gear rack transmission, so that the ratchet rack 203 is driven to slide leftwards, the ratchet rack 204 is driven to rotate through the ratchet rack 203, the driving wheel 205 is driven to rotate thirty degrees, meanwhile, the rotation motor 201 drives the raw material box 206 to advance through the gear transmission, the feeding pipe 207 is driven to extend above the lower die 108, plastic is injected into the lower die 108, when the rotation motor 201 rotates reversely, the raw material box 206 is driven to return to the initial position, meanwhile, the transverse bar 202 is driven to slide rightwards, so that the ratchet rack 203 is driven to slide rightwards, at the moment, the ratchet rack 203 is not driven to rotate by the ratchet rack 204, the ratchet rack 203 is pressed down, a spring between the ratchet rack 203 and the transverse bar 202 is compressed, after the ratchet rack 203 passes through the ratchet rack 204, the spring rebounds, the ratchet rack 203 is driven to return to the initial position, namely, when the taking-out device rotates, the raw material box 206 is fed into the lower die 108, and when the raw material box 206 is retracted, and the taking-out device is not rotated.
As shown in fig. 9-14, the extracting device comprises a central motor 308 fixedly mounted on a rotating frame 301, the rotating frame 301 is fixedly mounted with a driving wheel 205, the central motor 308 drives a large bevel gear 304 to rotate, and six groups of lifting ring mechanisms are arranged on the rotating frame 301.
As shown in fig. 9-14, the lifting ring mechanism comprises a rotating screw rod 303 rotatably mounted on a rotating frame 301, the rotating screw rod 303 drives a lifting ring 302 to slide along the rotating frame 301 through screw transmission, the lifting ring 302 is positioned in a lower die 108 during forming action, a sliding barrel 306 is slidably mounted at the lower part of the rotating screw rod 303, a docking bevel gear 307 is fixedly mounted at the bottom of the sliding barrel 306, a pushing docking rod 305 is rotatably mounted on the sliding barrel 306, and a spring between the pushing docking rod 305 and the rotating frame 301 is used for keeping the distance between the pushing docking rod 305 and the rotating frame 301.
As shown in fig. 9 to 14, a trapezoidal fixture block 401 is fixedly mounted on the frame body 101, a groove for clamping the pressing butt joint rod 305 is formed in the lower portion of the trapezoidal fixture block 401, and when the pressing butt joint rod 305 is located in the groove of the trapezoidal fixture block 401, the butt joint bevel gear 307 is meshed with the large bevel gear 304.
When the upper die 106 is lowered into the lower die 108, the lifting ring 302 is positioned between the two dies, the corresponding pressing butt-joint rod 305 of the lifting ring 302 is positioned in the trapezoid clamping block 401, the butt-joint bevel gear 307 and the large bevel gear 304 are in a meshed state, the spring between the pressing butt-joint rod 305 and the rotating frame 301 is in a stretched state, after the upper die 106 and the lower die 108 finish forming raw materials, the upper die 106 returns to the upper side, the central motor 308 rotates to drive the large bevel gear 304 to rotate, the butt-joint bevel gear 307 is driven to rotate, the rotating screw rod 303 is driven to rotate, thereby drive and lift the material circle 302 and bring the good plastic molding 6 of shaping and rise for plastic molding 6 leaves lower mould 108, drive wheel 205 rotates at this moment and drives rotating turret 301 rotation, after pushing down butt joint pole 305 and ladder-shaped fixture block 401 and breaking away from, push down the spring contraction between butt joint pole 305 and the rotating turret 301 and make butt joint bevel gear 307 and big bevel gear 304 break away from, rotating turret 301 rotates and drives plastic molding 6 and leaves, simultaneously next lift the pressing down butt joint pole 305 of circle mechanism and ladder-shaped fixture block 401 to cooperate, will lift the material circle 302 and descend into lower mould 108 again, prepares for the next shaping operation.
A plastic injection molding method is characterized in that: comprises the following steps:
First, plastic raw material is added to the lower die 108 through the raw material tank 206; the lifting ring 302 descends into the lower die 108; the upper die 106 descends to be attached to the lifting ring 302 and the lower die 108; the cooling cylinder 112 is attached to the lower die 108, and cools the lower die 108; the upper die 106 is raised; the material lifting ring 302 takes out the molded plastic molded part 6; the rotating frame 301 rotates to drive the plastic molding 6 to leave.
The invention discloses a working principle of plastic injection molding equipment, which comprises the following steps: the rotation motor 201 rotates and drives the transverse bar 202 to slide leftwards through the gear rack transmission, so that the ratchet rack 203 is driven to slide leftwards, the ratchet rack 204 is driven to rotate through the ratchet rack 203, the driving wheel 205 is driven to rotate thirty degrees, meanwhile, the rotation motor 201 drives the raw material box 206 to advance through the gear transmission, the feeding pipe 207 is driven to extend above the lower die 108, plastic is injected into the lower die 108, when the rotation motor 201 rotates reversely, the raw material box 206 is driven to return to the initial position, meanwhile, the transverse bar 202 is driven to slide rightwards, so that the ratchet rack 203 is driven to slide rightwards, at the moment, the ratchet rack 203 is not driven to rotate by the ratchet rack 204, the ratchet rack 203 is pressed down, a spring between the ratchet rack 203 and the transverse bar 202 is compressed, after the ratchet rack 203 passes through the ratchet rack 204, the spring rebounds, the ratchet rack 203 is driven to return to the initial position, namely, when the taking-out device rotates, the raw material box 206 is fed into the lower die 108, and when the raw material box 206 is retracted, and the taking-out device is not rotated. The lifting ring 302 is initially positioned in the lower die 108, the top motor 104 rotates to drive the screw rod 103 to rotate, so that the upper die 106 is driven to descend, the upper die 106 drives the pressing disc 107 to descend simultaneously through a spring connected with the pressing disc 107, after the upper die 106 descends into the lower die 108, the pressing disc 107 starts to be meshed with the docking gear 109, the screw rod 103 rotates to simultaneously drive the screw rod bevel gear 114 to rotate, meanwhile, the docking gear 109 is driven to rotate through the gear transmission and the belt transmission, the docking gear 109 starts to rotate to drive the pressing disc 107 to descend, the spring between the upper die 106 and the pressing disc 107 starts to be compressed, the pressing disc 107 starts to press the upper die 106, simultaneously starts to drive the lower pressing rod 115 to descend, the rack frame 111 is pressed down after the lower pressing rod 115 is contacted with the rack frame 111, the spring between the cooling cylinder 112 and the rack frame 111 is compressed, then the rack frame 111 is meshed with the centering gear 110, the centering gear 110 rotates to drive the rack frame 111 and the cooling cylinder 112 to move towards the lower die 108 through the gear transmission and the belt transmission, and finally, the cooling cylinder 112 is wrapped in the cooling cylinder 112 to cool a product through the cooling cylinder 112. Since the screw rod 103 has a section of unthreaded lower part, so upper die 106 descends to the lowest, top motor 104 continues to rotate and can not drive upper die 106 to descend continuously, and rack frame 111 can be pressed down after compressing disc 107 descends for a certain distance, so plastic raw material in lower die 108 has sufficient molding time before cooling cylinder 112 is attached. After the forming cooling is completed, the top motor 104 reversely rotates to drive the upper die 106 to ascend, so as to drive the pressing disc 107 to ascend, and the upper die 106, the pressing disc 107, the pressing rod 115, the rack frame 111 and the cooling cylinder 112 return to the initial positions under the resilience force of the springs between the upper die 106 and the pressing disc 107, between the rack frame 111 and the cooling cylinder 112, between the pressing rod 115 and the pressing disc 107, and between the cooling cylinder 112 and the frame 101. When the upper die 106 and the lower die 108 finish forming the raw materials, the central motor 308 rotates to drive the large bevel gear 304 to rotate, thereby driving the docking bevel gear 307 to rotate, driving the screw rod 303 to rotate, driving the lifting ring 302 to lift with the formed plastic forming piece 6 together, enabling the plastic forming piece 6 to leave the lower die 108, at the moment, driving the rotating wheel 205 to rotate to drive the rotating frame 301 to rotate, and after the docking bevel gear 305 is separated from the trapezoid clamping block 401, the spring between the docking bevel gear 305 and the rotating frame 301 is contracted, so that the docking 307 is separated from the large bevel gear 304, the rotating frame 301 rotates to drive the plastic forming piece 6 to leave, and simultaneously, the docking bevel gear 305 and the trapezoid clamping block 401 of the next lifting ring mechanism cooperate to enable the lifting ring 302 to descend into the lower die 108 again, so that the plastic forming piece 6 is separated from the lower die 108, and the next forming operation is prepared.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the technical scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
1. Plastic injection molding equipment, including body frame device, its characterized in that: the main frame device include support body (101), the main frame device be used for carrying out shaping to the raw materials, the main frame device on be provided with injection molding device, injection molding device include rotating electrical machines (201), rotating electrical machines (201) and support body (101) fixed mounting, injection molding device be arranged in injecting the raw materials into the main frame device, the main frame device on be provided with take-out device, take-out device include rotating turret (301), rotating turret (301) rotate and install on support body (101), take-out device be arranged in taking out plastics shaping piece (6) after the shaping from the main frame device, the main frame device be provided with shell (5) outward.
2. A plastic injection molding apparatus as claimed in claim 1, wherein: the main frame device include stand (102), slide rail (105), lower mould (108) and cross rail (113) of fixed mounting on support body (101), stand (102) top fixed mounting has top motor (104), rotate on stand (102) and install lead screw (103), top motor (104) are used for driving lead screw (103) rotation, lead screw bevel gear (114) are installed to lead screw (103) bottom fixed mounting, lead screw bevel gear (114) drive docking gear (109) and centering gear (110) rotation through gear drive and belt drive, lead screw (103) lower part has one section non-screw portion, be provided with mould mechanism on slide rail (105), be provided with cooling body on support body (101).
3. A plastic injection molding apparatus as claimed in claim 2, wherein: the upper die mechanism comprises an upper die (106) and a pressing disc (107) which are slidably mounted on a sliding rail (105), a spring between the upper die (106) and the pressing disc (107) is used for keeping the distance between the upper die and the pressing disc (107), a lower pressing rod (115) is slidably mounted on the pressing disc (107), the spring between the lower pressing rod (115) and the pressing disc (107) is used for keeping the distance between the lower pressing rod (115) and the pressing disc (107), a pressing disc is arranged in front of the pressing disc (107), the diameter of a circular groove at the top of the pressing disc is the same as that of the circular groove at the top of the upper die (106), an internal thread is arranged on the upper die (106), thread transmission is formed between the internal thread and a screw rod (103), and after the upper die (106) descends into a lower die (108), the pressing disc (107) is meshed with a butt joint gear (109).
4. A plastic injection molding apparatus as claimed in claim 2, wherein: the cooling mechanism comprises two cooling drums (112) which are slidably arranged on a transverse rail (113), the two cooling drums (112) are matched through a gear rack at the bottom to realize simultaneous opposite movement, a spring between the cooling drums (112) and a frame body (101) is used for driving the cooling drums (112) to reset, a water cooling pipe is arranged in each cooling drum (112), a rack frame (111) can slide up and down relative to the cooling drums (112), the spring between the rack frame (111) and the cooling drums (112) is used for keeping the distance between the rack frame (111) and the cooling drums (112), the elasticity of the spring between a pressing rod (115) and a pressing disc (107) is larger than that of the spring between the rack frame (111) and the cooling drums (112), after the rack frame (111) is pressed down by the pressing rod (115), the rack frame (111) is meshed with a centering gear (110), the inner diameter of the cooling drums (112) is the same as the outer diameter of a lower die (108), and the cooling drums (112) are attached to the lower die (108) when the cooling is carried out.
5. A plastic injection molding apparatus as claimed in claim 3, wherein: the injection molding device comprises a transverse rod (202) which is slidably arranged on a frame body (101), a rack section is arranged on the transverse rod (202), a rotary motor (201) drives the transverse rod (202) to slide through gear rack transmission, a ratchet bar (203) is slidably arranged on the transverse rod (202), a spring between the transverse rod (202) and the ratchet bar (203) is used for keeping the distance between the transverse rod (202) and the ratchet bar (203), a ratchet wheel (204) is meshed on the ratchet bar (203), the ratchet wheel (204) drives a driving wheel (205) to rotate through belt transmission, a raw material box (206) is driven to slide towards a lower die (108) through gear transmission, a feeding pipe (207) is arranged on the raw material box (206), and plastic raw materials are filled in the raw material box (206).
6. A plastic injection molding apparatus as claimed in claim 5, wherein: the taking-out device comprises a central motor (308) fixedly arranged on a rotating frame (301), the rotating frame (301) is fixedly arranged with a driving wheel (205), the central motor (308) drives a large bevel gear (304) to rotate, and six groups of lifting ring mechanisms are arranged on the rotating frame (301).
7. A plastic injection molding apparatus as claimed in claim 6, wherein: the lifting ring mechanism comprises a rotating screw rod (303) rotatably mounted on a rotating frame (301), the rotating screw rod (303) drives a lifting ring (302) to slide along the rotating frame (301) through screw transmission, the lifting ring (302) is located in a lower die (108) when performing forming action, a sliding barrel (306) is slidably mounted on the lower portion of the rotating screw rod (303), a butt bevel gear (307) is fixedly mounted on the bottom of the sliding barrel (306), a pressing butt joint rod (305) is rotatably mounted on the sliding barrel (306), and a spring between the pressing butt joint rod (305) and the rotating frame (301) is used for keeping the distance between the pressing butt joint rod (305) and the rotating frame (301).
8. A plastic injection molding apparatus as claimed in claim 7, wherein: the frame body (101) on fixed mounting have trapezoidal fixture block (401), trapezoidal fixture block (401) lower part is provided with the recess that is used for the card to push down docking rod (305), when pushing down docking rod (305) and being arranged in the recess of trapezoidal fixture block (401), dock bevel gear (307) and big bevel gear (304) meshing.
9. A plastic injection molding method is characterized in that: comprises the following steps:
firstly, adding plastic raw materials into a lower die (108) through a raw material box (206); the material lifting ring (302) descends into the lower die (108); the upper die (106) descends to be attached to the material lifting ring (302) and the lower die (108); the cooling cylinder (112) is attached to the lower die (108), and the lower die (108) is cooled; the upper die (106) rises; the material lifting ring (302) takes out the molded plastic molded part (6); the rotating frame (301) rotates to drive the plastic forming piece (6) to leave.
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