Disclosure of Invention
The invention aims to provide a pre-molding injection molding machine, which aims to solve the specific problems that the existing molding link is divided into prepressing, preheating and molding, wherein the prepressing comprises the following steps: in order to improve the quality of products, improve the molding efficiency and the like, the operation of pre-pressing powder or fiber molding compound into a certain shape; preheating: in order to improve the processability of the molding compound and shorten the molding period, the molding compound is heated before molding; die pressing: the method comprises the steps of adding required amount of plastic into a mold, closing the mold, exhausting, keeping for a period of time at molding temperature and pressure, then demolding and cleaning, and performing multiple mold pressing links.
In order to achieve the purpose, the invention provides the following technical scheme:
a pre-mold injection molding machine comprising: the device comprises a prepressing device, a preheating device and a mould pressing device;
further comprising:
the shell is used for fixing the preheating device and the die pressing device of the pre-pressing device;
the conveying device is fixedly arranged inside the shell and is used for conveying the modules;
the pre-pressing device, the preheating device and the die pressing device are sequentially arranged above the conveying device from left to right.
The preheating device, the guiding device and the molding device are all arranged above the conveying device.
Preferably, pre-compaction device left side is equipped with passes the material device, pass the material device and include:
the shell is fixedly connected to the outer wall of the left side of the prepressing device; the shell is divided into a first chamber and a second chamber by a baffle;
the material guide shell is fixedly arranged at the upper end of the shell; the two material guide shells are symmetrically arranged along the vertical center of the shell and are communicated with the second chamber through a material guide pipe; the upper end and the lower end of the material guide shell are thick and the middle is thin;
the packing auger is arranged inside the second chamber and is transversely arranged left and right; a stirring rod is fixedly connected between blades of the auger;
the worm is arranged inside the first chamber, the right end of the worm penetrates through the baffle and is fixedly connected with the left end of the packing auger, and the left end of the worm penetrates through the shell and extends to the outside;
the two worm gears are respectively arranged on two sides of the worm, the upper end of each worm gear is fixedly connected with a cleaning rod through a connecting rod, the cleaning rods are arranged inside the material guide shell, and the surface of each cleaning rod is attached to the inside of the material guide shell and a gap is reserved; the upper end of the cleaning rod is arranged to be conical with a dome;
the motor A is fixedly connected to the left side of the shell and fixedly connected with the worm;
one section of the first air pipe penetrates through the shell and is communicated with the second chamber, and the other end of the first air pipe is placed inside the upper end of the material guide shell;
the second air pipe is rotatably connected with the left end of the worm;
the worm and the auger are both of a hollow structure, the outer wall of the auger is provided with air holes, and air can enter the second chamber through the first air pipe, the interior of the worm, the interior of the auger and the air holes;
preferably, the pre-pressing device comprises:
the prepressing upper die is fixedly arranged at the upper end of the left side of the shell and is fixedly connected with one side of the shell, which is far away from the motor A;
the prepressing lower die is arranged on the right side of the prepressing upper die;
the A-type cavity is formed in the prepressing lower die;
the material passing port is communicated with the material outlet, so that the material can be conveyed into the A cavity through the material passing port;
the cylinder A is fixedly arranged on the inner wall of the right side of the shell and is fixedly connected with the prepressing lower die and used for driving the prepressing lower die;
and one end of the ejector rod is fixedly connected to the cylinder A, the other end of the ejector rod penetrates through the pre-pressing lower die, and the ejector rod is flush with the bottom surface of the cavity A.
Preferably, the transfer device includes:
the motor B is fixedly arranged at the front end of the shell;
the transmission shafts are arranged inside two ends of the shell respectively, and two ends of the transmission shafts are rotationally connected with the inner walls of the front end and the rear end of the shell.
The motor B is fixedly connected with one end of the left transmission shaft, and a transmission belt is arranged on the transmission shaft, so that the model is convenient to convey.
Preferably, the motor A is a hollow motor;
preferably, a guide device is arranged on the right side of the preheating device, and a gap is reserved between the guide device and the transmission belt.
Preferably, the molding device includes:
the lower die is molded, and one side of the lower die is fixedly connected with the inner wall of the shell close to one side of the motor B;
the cavity B is formed in the lower die of the die pressing, and the lower end of the cavity B is flush with the upper end of the transmission belt;
the bulge is arranged on the right side of the B cavity;
the mould pressing upper die is arranged on the other side of the mould pressing lower die, and a groove matched with the bulge is formed in the mould pressing upper die;
the cylinder B is fixedly connected with the inner wall of the shell at one side far away from the lower die for driving the upper die;
the waste material port is formed in the outer wall of one side of the lower die for die pressing;
and the cylinder C is fixedly connected to the outer wall of the shell close to the lower die for die pressing, and is used for ejecting the die in the cavity B after the die pressing device finishes running.
Preferably, the motor B is a stepping motor.
Preferably, a blanking box is arranged on the right side of the conveying device.
Preferably, waste material boxes are arranged below the mould pressing lower mould and the waste material opening in the shell.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention is provided with a conveying device, a preheating device and a mould pressing device, materials are pre-pressed, then a mould after pre-pressing enters the preheating device through the conveying device, the pre-pressed mould is preheated, the conveying device conveys the preheated mould again, finally the mould enters the mould pressing device through the conveying device, mould pressing is carried out on the mould, and the mould after mould pressing is conveyed to the next link through the conveying device; by arranging the shell, the pre-pressing device, the preheating device and the die pressing device are connected in series on one production line, and manual carrying is not needed; the mould pressing link is continuous, the burden of workers is reduced, the working time is saved, and the working efficiency is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a pre-molding injection molding machine, and solves the specific problems that the existing molding link is divided into prepressing, preheating and molding, wherein the prepressing comprises the following steps: in order to improve the quality of products, improve the molding efficiency and the like, the operation of pre-pressing powder or fiber molding compound into a certain shape; preheating: in order to improve the processability of the molding compound and shorten the molding period, the molding compound is heated before molding; die pressing: the method comprises the steps of adding required amount of plastic into a mold, closing the mold, exhausting, keeping for a period of time at molding temperature and pressure, then demolding and cleaning, and performing multiple mold pressing links.
In order to solve the technical problems, the technical scheme in the embodiment of the invention has the following general idea: according to the invention, by arranging the conveying device 4, the preheating device 5 and the die pressing device 7, materials are pre-pressed, then the pre-pressed model enters the preheating device 5 through the conveying device 4, the pre-pressed model is preheated, the preheated model is conveyed again by the conveying device 4, finally the preheated model enters the die pressing device 7 through the conveying device 4, the die pressing is carried out on the model, and the die-pressed model is conveyed to the next link through the conveying device. In order to better understand the above technical solution, please refer to fig. 1 to 5, in an embodiment of the present invention, a pre-mold injection molding machine includes: the device comprises a prepressing device 1, a preheating device 5 and a molding device 7;
further comprising:
the shell 2 is used for fixing the pre-pressing device 1, the preheating device 5 and the mould pressing device 7;
a transfer device 4, said transfer device 4 being fixedly arranged inside the housing 2 for transferring the modules;
the pre-pressing device 1, the preheating device 5 and the molding device 7 are sequentially arranged above the conveying device 4 from left to right.
According to the invention, by arranging the conveying device 4, the preheating device 5 and the die pressing device 7, materials are pre-pressed, then a model after pre-pressing enters the preheating device 5 through the conveying device 4, the pre-pressed model is preheated, the conveying device 4 conveys the preheated model again, finally the preheated model enters the die pressing device 7 through the conveying device 4, the die pressing is carried out on the model, and the die-pressed model is conveyed to the next link through the conveying device; by arranging the shell 2, the pre-pressing device 1, the preheating device 5 and the mould pressing device 7 are connected in series on a production line, and manual carrying again is not needed;
compared with the existing mould pressing link, the mould pressing link is continuous, the burden of workers is reduced, the working time is saved, and the working efficiency is improved.
As an embodiment of the present invention, a material conveying device 3 is disposed on the left side of the pre-pressing device 1, and the material conveying device 3 includes:
the shell 301 is fixedly connected to the outer wall of the left side of the prepressing device 1; the shell 301 is divided into a first chamber 303 and a second chamber 304 by a baffle 302;
the material guiding shell 305 is fixedly arranged at the upper end of the shell 301; the two material guiding shells 305 are symmetrically arranged along the vertical center of the shell 301, and the material guiding shells 305 are communicated with the second chamber 304 through a material guiding pipe 306; the upper end and the lower end of the material guide shell 305 are thick, and the middle is thin;
the packing auger 307 is arranged inside the second chamber 304 and is transversely arranged left and right; a stirring rod 308 is fixedly connected between blades of the packing auger 307;
the worm 309 is arranged inside the first chamber 303, the right end of the worm 309 penetrates through the baffle 302 and is fixedly connected with the left end of the packing auger 307, and the left end of the worm 309 penetrates through the shell 301 and extends to the outside;
two worm wheels 310 are respectively arranged on two sides of the worm 309, the upper end of each worm wheel 310 is fixedly connected with a cleaning rod 311 through a connecting rod, the cleaning rods 311 are arranged inside the material guide shell 305, and the surface of each cleaning rod 311 is attached to the inside of the material guide shell 305 and a gap is reserved; the upper end of the cleaning rod 311 is provided with a conical shape with a dome;
the motor A312 is fixedly connected to the left side of the shell 301, and the motor A312 is fixedly connected with the worm 309;
a first air pipe 313, one section of the first air pipe 313 penetrates through the shell 301 and is communicated with the second chamber 304, and the other end of the first air pipe 313 is placed inside the upper end of the material guide shell 305;
the second air pipe 314 is rotatably connected with the left end of the worm 309;
the worm 309 and the auger 307 are both of a hollow structure, the outer wall of the auger 307 is provided with an air hole 315, and air can enter the second chamber 304 through the first air pipe 314, the interior of the worm 309, the interior of the auger 307 and the air hole 315;
when the blanking step is carried out, firstly, the motor A312 is started, the motor A312 rotates, the motor A312 is fixedly connected with the worm 309, the right end of the worm 309 penetrates through the baffle 302 and is fixedly connected with the left end of the packing auger 307, the motor A312 drives the worm 309 and the packing auger 307 to rotate, and the stirring rod 308 is fixed on blades of the packing auger 307, so that the stirring rod 308 also rotates along with the rotation; at the same time, the two worm wheels 310 are meshed with the worm 309, the worm 309 rotates to drive the worm wheels 310 to rotate, the upper end of each worm wheel 310 is fixedly connected with a cleaning rod 311 through a connecting rod, the cleaning rod 311 also rotates along with the worm wheels, and water absorbing cloth is arranged on the cleaning rod 311;
at this time, cleaned plastic particles are poured into the two material guide shells 305, the surface of the cleaning rod 311 is attached to the interior of the material guide shells 305, gaps are reserved, the width of each gap is the same as the diameter of the plastic particles, the plastic particles can move downwards along the gaps, the cleaning rod 311 can remove water stains attached to the plastic particles, the thickness of the upper end and the thickness of the lower end of each material guide shell 305 are set, the surface of the cleaning rod 311 is attached to the interior of the material guide shells 305, on one hand, the residence time of the plastic particles in the material guide shells 305 is increased, on the other hand, the cleaning rod 311 can fully contact and clean the plastic particles, the plastic particles can be driven by the cleaning rod 311 to roll, all surfaces of the plastic particles can be cleaned, and the plastic particles can move downwards through gravity; the water stain is cleaned to prevent the water stain from being changed into water vapor in the melting process of the plastic solution, so that small bubbles are doped in the plastic solution;
the cleaned plastic particles enter the left end of the second chamber 304 through the material guide pipe 306, the packing auger 307 rotates to convey the plastic particles to the right, the blades of the packing auger 307 are fixedly connected with stirring rods 308, the number of the stirring rods 308 is more than one, the stirring rods 308 can stir the plastic particles in the rotating process to promote the mixing of the plastic particles, the outer end of the shell is provided with four annular heating rings, and the plastic particles are gradually melted from left to right;
meanwhile, the air pump is started, the air pump blows hot air into the second air pipe 314, the hot air passes through the inside of the worm 309 and the inside of the flood dragon and is sprayed with air through the air hole 315, the one-way valve is arranged inside the air hole 315 and is made of a heat-resistant material, the problem that plastic particles are melted by the heating ring can be solved, the one-way valve can be normally used, the plastic solution cannot enter the inner part of the auger 307 and is sprayed with air to the plastic solution, on one hand, the air hole 315 above the plastic solution is used for spraying air above the liquid level of the plastic solution, the pressure on the one-way valve is relatively small, the air spraying force of the air hole 315 above the plastic solution is relatively large, the air hole 315 is rebounded through the inner wall of the shell 301, the plastic solution can be driven to shake, the full fusion of different types of plastic solutions is promoted, on the other hand, the air hole 315 below the liquid level of the plastic solution is used for spraying air, and the liquid is arranged below the liquid level of the plastic solution, therefore, the pressure applied to the check valve is larger, the force of the gas sprayed from the air hole 315 is smaller, large bubbles are easy to form, the fusion of the plastic solution can be further promoted by the part of gas, and the large bubbles formed by the sprayed gas can also move upwards to take away the small bubbles contained in the plastic solution;
the gas can enter into the inside of a trachea 313 through the check valve of a trachea 313 right-hand member afterwards, and the gas contains the heat, spout to the inside of guide shell 305 from the upper end of guide shell 305 through a trachea 313, on the one hand, further gets rid of the water stain on the plastic granules surface that washs, on the other hand also dries the cloth that absorbs water on cleaning rod 311 for the cloth that absorbs water can be lastingly absorbed water.
As an embodiment of the present invention, the pre-pressing device 1 includes:
the prepressing upper die 11 is fixedly arranged at the upper end of the left side of the shell 2, and the prepressing upper die 11 is fixedly connected with one side of the shell 32, which is far away from the motor A34;
the prepressing lower die 12 is arranged on the right side of the prepressing upper die 11;
the A cavity 121 is formed in the prepressing lower die 12;
the material passing port 111 is communicated with the material outlet 322, so that the material can be conveyed into the A cavity 121 through the material passing port 111;
the cylinder A13 is fixedly arranged on the inner wall of the right side of the shell 2, and the cylinder A13 is fixedly connected with the pre-pressing lower die 12 and used for driving the pre-pressing lower die 12;
and one end of the ejector rod 122 is fixedly connected to the cylinder 13A, the other end of the ejector rod 122 penetrates through the prepressing lower die 12, and the ejector rod 122 is flush with the bottom surface of the cavity A121.
The material enters a cavity A121 in the prepressing lower die 12 through a material passing hole 111, the prepressing upper die 11 is fixedly connected with the shell 2, at the moment, the prepressing upper die 11 is fixed, the cylinder A13 is fixed with the inner wall of the shell 2, and the cylinder A13 is fixedly connected with the prepressing lower die 12 and used for driving the prepressing lower die 12;
in the pre-compaction in-process, the one end and the A die cavity 121 bottom surface parallel and level of ejector pin 122, guarantee that can not reveal at the pre-compaction in-process, after the pre-compaction shaping finishes, drive A cylinder 13, it goes up mould 11 on the pre-compaction to drive pre-compaction lower mould 12, mould 11 is separated on pre-compaction lower mould 12 and the pre-compaction, the other one end fixed connection of ejector pin 122 is on A cylinder 13, ejector pin 122's rigidity, the model in the ejecting A die cavity 121 of ejector pin 122, pass this moment and expect that device 3 continues the conveying material, extrude after a period, the model drops on conveyer 4.
As an embodiment of the present invention, the transfer device 4 includes:
the motor B41, the said motor B41 is fixedly arranged in the front end of the outer casing 2;
and the two transmission shafts 42 are respectively arranged inside two ends of the shell 2, and the inner walls of the two ends of the transmission shafts 42 are rotationally connected with the inner walls of the front end and the rear end of the shell 2.
The B motor 41 is fixedly connected with one end of a left transmission shaft 42, and a transmission belt 43 is arranged on the transmission shaft 42, so that the model is convenient to transmit.
The fixed setting of B motor 41 is at 2 front ends of shell, the fixed position of B motor 41 this moment, two transmission shafts 42 set up inside the both ends of shell 2 respectively, both ends inner wall rotates around transmission shaft 42 both ends and the shell 2 to be connected, B motor 41 and transmission shaft 42 one end fixed connection, the fixed position of transmission shaft 42, drive belt 43 sets up on the transmission shaft, the stationarity of drive belt motion has been guaranteed this moment, start B motor 41, B motor 41 works, it is rotatory to drive transmission shaft 42, drive belt 43 motion, the transportation model.
As an embodiment of the present invention, the a motor 312 is a hollow motor;
by setting the a motor 312 to be a hollow motor; the second air pipe 314 can convey air to the inside of the worm 309 while driving the worm 309 to rotate.
In one embodiment of the present invention, a guide device 6 is disposed on the right side of the preheating device 5, and a gap is left between the guide device 6 and the transmission belt 43.
The guide device 6 is arranged on the right side of the preheating device 5, one end of the guide device 6, which is close to the preheating device 5, is a wide edge, the width of the guide device 6 is gradually reduced towards one end of the mould pressing device 7, when the width of the mould is reduced to the width required by the invention, the guide device continues to extend rightwards for a part of distance, at the moment, the preheated mould is horizontally placed in order through the guide device 6 to prepare for mould pressing, a gap is reserved between the guide device 6 and the transmission belt 43, when the transmission belt 43 moves, the guide device 6 is not in contact with the transmission belt 43, the friction between the guide device 6 and the transmission belt 43 is reduced, and the service lives of the guide device 6 and the transmission belt 43 are prolonged.
As an embodiment of the present invention, the molding device 7 includes:
the die pressing lower die 71 is fixedly connected with the inner wall of the shell 2, close to one side of the motor B41, on one side of the die pressing lower die 71;
the B cavity 711 is arranged in the lower die pressing 71, and the lower end of the B cavity 711 is flush with the upper end of the transmission belt 43;
the protrusion 712 is arranged on the right side of the B cavity 711;
the mould pressing upper die 72 is arranged on the other side of the mould pressing lower die 71, and a groove matched with the bulge 712 is formed in the mould pressing upper die 72;
the B cylinder 73 is fixedly connected with the inner wall of the shell 2 at one side far away from the lower die pressing 71 and used for driving the upper die pressing 72;
the waste material port 713 is formed in the outer wall of one side of the lower die pressing 71;
and the C air cylinder 74 is fixedly connected to the outer wall of the shell 2 close to the lower die pressing 71, and the C air cylinder 74 is used for ejecting the die in the B-shaped cavity 711 after the die pressing device 7 finishes operation.
For example, in the moving state of fig. 2, the B cylinder 73 moves to drive the upper mold pressing die 72 to separate from the lower mold pressing die 71, at this time, the mold finished by the material guiding device 31 enters between the upper mold pressing die 72 and the lower mold pressing die 71, when the mold contacts with the protrusion 712, the protrusion 712 prevents the mold from moving further, at this time, the B motor 41 is turned off, and the belt 43 stops moving;
the B cylinder 73 moves to drive the mould pressing upper mould 72 to approach the mould pressing lower mould 71, and meanwhile, the mould is pushed to move towards the B cavity 711 until the mould pressing upper mould 72 covers the mould pressing lower mould 71, the mould completely enters the B cavity 711 at the moment, redundant materials exist in the mould pressing process, and the redundant materials are discharged out of the B cavity 711 through the waste port 713 at the moment;
after the mold pressing is finished, the B air cylinder 73 is started to drive the mold pressing upper mold 72 to be away from the mold pressing upper mold 72, the C air cylinder 74 is driven to eject the mold in the B cavity 711, and the ejected mold falls on the transmission belt 43.
In an embodiment of the present invention, the B motor 41 is a stepping motor.
The B motor 41 is configured as a stepper motor, and the movement of the belt 43 is intermittent throughout the operating conditions, ensuring that the model enters each stage and the belt 43 remains for a period of time.
In one embodiment of the present invention, a blanking box 21 is provided on the right side of the conveying device 4.
The molded model falls on the transmission belt 43, the motor B41 is started at the moment, the transmission belt 43 moves to drive the molded model to move towards the blanking box 21, and after moving for a period of time, the model falls into the blanking box 21.
In one embodiment of the present invention, a waste box 22 is disposed inside the housing 2 below the lower mold 71 and below the waste opening 713.
And the excessive materials are discharged by mould pressing, and the waste material box 22 is arranged below the waste material opening 713, so that the excessive materials fall into the waste material box 22, the materials are collected, and the motion environment is optimized.
The working principle is as follows: when the blanking step is carried out, firstly, the motor A312 is started, and the motor A312 rotates;
the motor A312 drives the worm 309 and the auger 307 to rotate;
the agitator bar 308 also rotates as well; at the same time, the two worm wheels 310 are meshed with the worm 309, the worm 309 rotates to drive the worm wheels 310 to rotate, the upper end of each worm wheel 310 is fixedly connected with a cleaning rod 311 through a connecting rod, the cleaning rod 311 also rotates along with the worm wheels, and water absorbing cloth is arranged on the cleaning rod 311;
at this time, the cleaned plastic particles are poured into the two material guiding shells 305;
the plastic particles move downwards along the gap, and the cleaning rod 311 can remove water stains attached to the plastic particles;
the cleaned plastic particles enter the left end of the second chamber 304 through the material guide pipe 306, the packing auger 307 rotates to convey the plastic particles to the right, the blades of the packing auger 307 are fixedly connected with stirring rods 308, the number of the stirring rods 308 is more than one, the stirring rods 308 can stir the plastic particles in the rotating process to promote the mixing of the plastic particles, the outer end of the shell is provided with four annular heating rings, and the plastic particles are gradually melted from left to right;
meanwhile, the air pump is started, the air pump blows hot air into the second air pipe 314, the hot air passes through the inside of the worm 309 and the inside of the flood dragon and is sprayed with air through the air hole 315, the one-way valve is arranged inside the air hole 315 and is made of a heat-resistant material, the problem that plastic particles are melted by the heating ring can be solved, the one-way valve can be normally used, the plastic solution cannot enter the inner part of the auger 307 and is sprayed with air to the plastic solution, on one hand, the air hole 315 above the plastic solution is used for spraying air above the liquid level of the plastic solution, the pressure on the one-way valve is relatively small, the air spraying force of the air hole 315 above the plastic solution is relatively large, the air hole 315 is rebounded through the inner wall of the shell 301, the plastic solution can be driven to shake, the full fusion of different types of plastic solutions is promoted, on the other hand, the air hole 315 below the liquid level of the plastic solution is used for spraying air, and the liquid is arranged below the liquid level of the plastic solution, therefore, the pressure applied to the check valve is larger, the force of the gas sprayed from the air hole 315 is smaller, large bubbles are easy to form, the fusion of the plastic solution can be further promoted by the part of gas, and the large bubbles formed by the sprayed gas can also move upwards to take away the small bubbles contained in the plastic solution;
the gas can enter into the inside of a trachea 313 through the check valve of a trachea 313 right-hand member afterwards, and the gas contains the heat, spout to the inside of guide shell 305 from the upper end of guide shell 305 through a trachea 313, on the one hand, further gets rid of the water stain on the plastic granules surface that washs, on the other hand also dries the cloth that absorbs water on cleaning rod 311 for the cloth that absorbs water can be lastingly absorbed water.
The material enters the material through the material outlet 322 into the material through hole 111 in the pre-pressing upper die 11, and then enters the a cavity 121 in the pre-pressing lower die 12, and the a cylinder 13 is fixedly connected with the pre-pressing lower die 12 and used for driving the pre-pressing lower die 12;
after the pre-pressing forming is finished, the cylinder A13 is driven to drive the pre-pressing lower die 12 to be away from the pre-pressing upper die 11, the pre-pressing lower die 12 is separated from the pre-pressing upper die 11, and the ejector rod 122 ejects the model in the cavity A121.
And starting the B motor 41, wherein the B motor 41 works to drive the transmission shaft 42 to rotate and drive the transmission belt 43 to move.
The ejector rod 122 ejects the model, the material conveying device 3 continues to convey the material, the material in the material inlet 111 extrudes the model at the moment, the model after the pre-pressing is completed falls on the transmission belt 43, the transmission belt 43 moves, the model is driven to enter the preheating device 5, and heat is emitted to preheat the model.
For example, in the moving state of fig. 2, the B cylinder 73 moves to drive the upper die 72 and the lower die to separate, at this time, the mold finished by the guide device 6 enters between the upper die 72 and the lower die, when the mold contacts the protrusion 712, the protrusion 712 prevents the mold from moving further, at this time, the B motor 41 is turned off, and the belt 43 stops moving;
the B cylinder 73 moves to drive the mould pressing upper mould to approach the mould pressing lower mould 71, meanwhile, the mould is pushed to move towards the B cavity 711 until the mould pressing upper mould covers the mould pressing lower mould 71, at the moment, the mould completely enters the B cavity 711, redundant materials are arranged in the mould pressing process, the redundant materials are discharged out of the B cavity 711 through the waste material port 713, and the redundant materials fall into the waste material box 22 to be collected;
after the mould pressing is finished, the B cylinder 73 is started to drive the mould pressing upper die to be far away from the mould pressing upper die, the C cylinder 74 is driven to eject the mould in the B cavity 711, and the ejected mould falls on the transmission belt 43; at this time, the motor 41B is started, the transmission belt 43 moves to drive the molded model to move towards the blanking box 21, and after moving for a period of time, the model falls into the blanking box 21.
The technical features of the above embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist, the above embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but cannot therefore be understood as a limitation to the scope of the invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which are within the protection scope of the present invention; therefore, the protection scope of the present patent shall be subject to the appended claims.