CN111347613B

CN111347613B - Automatic continuous injection molding and demolding device

Info

Publication number: CN111347613B
Application number: CN202010281734.7A
Authority: CN
Inventors: 赵媛利
Original assignee: Ningbo Jinsheng Molding Co ltd
Current assignee: NINGBO JINSHENG MOLDING Co.,Ltd.
Priority date: 2020-04-11
Filing date: 2020-04-11
Publication date: 2020-12-01
Anticipated expiration: 2040-04-11
Also published as: CN111347613A

Abstract

An automatic continuous injection molding and demolding device comprises a central mounting block and two groups of bilaterally symmetrical circulating conveyor belts, wherein a plurality of groups of injection molds are fixedly arranged at the upper ends of the circulating conveyor belts, each injection mold comprises a base fixedly mounted on the upper end surface of the circulating conveyor belt, a base blanking through hole and a mold mounting block sliding cavity are arranged in each base, a mold mounting block is slidably arranged in each mold mounting block sliding cavity, and a change cavity and a mounting block blanking through hole are arranged in each mold mounting block; this device can realize injection moulding and cooling drawing of patterns's automation through the control to each power supply, and injection mold passes through conveyer and constantly changes, can wait to cool off on the transfer device after moulding plastics, also can send special cooling chamber cooling into, and the cooling is accomplished and can realize automatic drawing of patterns, easy operation, the workman only need regularly add according to measuring the ground the raw materials of moulding plastics can, efficient, very big convenient production reduces workman's work fatigue intensity.

Description

Automatic continuous injection molding and demolding device

Technical Field

The invention relates to the technical field of injection molding, in particular to an automatic continuous injection molding and demolding device.

Background

Injection molding, also known as injection molding, is a method of molding by injection and molding, i.e., injecting a molten material into a cavity at a high pressure at a certain temperature, and cooling and solidifying the molten material to obtain a molded article.

However, most of the prior art adopts a manual demoulding method, which has the disadvantages of slow speed, low efficiency, repeated labor of workers for a long time and high fatigue degree; on the other hand, the long-term work of workers causes the labor intensity of the workers to be high, and particularly when the workers meet products with strong viscous force, the demolding is laborious.

Disclosure of Invention

Aiming at the technical defects, the invention provides an automatic continuous injection molding and demolding device which can overcome the defects.

An automatic continuous injection molding and demolding device comprises a central installation block and two groups of bilaterally symmetrical circulating conveyor belts, wherein a plurality of groups of injection molds are fixedly arranged at the upper ends of the circulating conveyor belts, each injection mold comprises a base fixedly installed on the upper end surface of the circulating conveyor belt, a base blanking through hole and a mold installation block sliding cavity are arranged in the base, a mold installation block is slidably arranged in the mold installation block sliding cavity, a change cavity and an installation block blanking through hole are arranged in the mold installation block, the base blanking through hole is communicated with the change cavity through the installation block blanking through hole, a hydraulic cylinder is fixedly installed in the mold installation block, a first hydraulic pushing cavity is arranged in the mold installation block, a first oil pipeline is arranged between the first hydraulic pushing cavity and the hydraulic cylinder, a first hydraulic push rod is slidably arranged in the first hydraulic pushing cavity and extends outwards from the first hydraulic pushing cavity, the outer end face of the first hydraulic push rod is fixedly connected with the outer end wall of the sliding cavity of the die mounting block, a static die is fixedly mounted in the die mounting block, an injection port and a static die cavity are arranged in the static die, an anti-sticking inclined block is fixedly mounted on the static die, guide grooves which are symmetrical front and back are arranged in the front end wall and the back end wall of the change cavity, a raw material processing cavity and a filtering blanking cavity are arranged in the central mounting block and are communicated with each other, the raw material processing cavity is communicated with the outside, a high-temperature heater is fixedly mounted on the inner wall of the raw material processing cavity, a raw material processing device for processing injection molding raw materials is arranged in the raw material processing cavity, an injection device for injection molding is fixedly mounted in the central mounting block, and a demolding device for taking out a molded product from the die is fixedly arranged on the die mounting block, and a hydraulic transmission device for power transmission is arranged in the die mounting block.

Preferably, the material processing apparatus includes fixed mounting and is in the multiunit bracing piece of the bilateral symmetry of central authorities 'installation piece up end, fixed mounting has dustproof kicking block on the bracing piece, terminal surface fixed mounting has agitator motor and four evenly distributed's of group connecting rod under the dustproof kicking block, the connecting rod with sliding connection between the high temperature heating ware, agitator motor power down is provided with agitator motor shaft, last fixed mounting of agitator motor shaft has multiunit stirring piece, agitator motor shaft lower extreme fixed mounting has stirring base, last fixed mounting of stirring base has centrifugal filter screen, through the material processing apparatus has realized the processing to the raw materials of moulding plastics.

Preferably, the injection device comprises an injection box fixedly installed in the central installation block, an injection cavity is arranged in the injection box, an injection motor is fixedly installed on the left end wall of the injection cavity, a motor shaft supporting block is fixedly installed in the injection cavity, an injection motor shaft is arranged at the right power of the injection motor and penetrates through the motor shaft supporting block, the injection motor shaft is rotatably connected with the motor shaft supporting block, a pushing spiral knife is fixedly installed on the injection motor shaft at the right end of the motor shaft supporting block, an injection inlet block is also fixedly installed in the central installation block, an injection inlet cavity is arranged in the injection inlet block and is communicated with the injection cavity, an auxiliary blanking port and a one-way blanking cavity are also arranged in the central installation block and are communicated with the filtering blanking cavity, one-way blanking chamber with injection inlet chamber intercommunication, one-way blanking intracavity slides and is provided with one-way blanking plate, one-way blanking slider spout that is provided with bilateral symmetry in the one-way blanking intracavity, it just to slide to be provided with one-way blanking slider in the one-way blanking slider spout one-way blanking slider with one-way blanking plate fixed connection, one-way blanking plate with be provided with one-way blanking thrust spring between the one-way blanking intracavity diapire, be provided with the one-way blanking through-hole of two sets of bilateral symmetry in the one-way blanking plate, injection box right-hand member fixed mounting has the syringe needle just the syringe needle extends right the central installation piece, the syringe needle with injection chamber intercommunication, through injection device has realized injecting the function in the injection mold with injection moulding material.

Preferably, the demolding device comprises two sets of demolding rotating shaft fixing frames which are fixedly installed on the inward end surface of the mold installation block and are symmetrical front and back, a demolding rotating shaft is rotatably arranged between the demolding rotating shaft fixing frames, a fixed block is fixedly installed on the demolding rotating shaft, a demolding hydraulic tank is fixedly installed on the fixed block, a demolding hydraulic cavity is arranged in the demolding hydraulic tank, a demolding hydraulic limiting block is fixedly installed in the demolding hydraulic cavity, a movable mold is arranged in the demolding hydraulic cavity in a sliding manner, the movable mold extends out of the demolding hydraulic cavity, a demolding guide pillar chute and a movable mold cavity are arranged in the movable mold, a demolding guide pillar is arranged in the demolding guide pillar chute in a sliding manner and is connected with the guide groove in a sliding manner, a demolding pushing limiting block is fixedly installed in the movable mold cavity, a demolding pushing block is arranged in the movable mold cavity in a, fixed mounting has the drawing of patterns connecting pipe on the drawing of patterns hydraulic tank, be provided with drawing of patterns connecting chamber just in the drawing of patterns connecting chamber with drawing of patterns hydraulic chamber intercommunication, through shedder has realized taking out the function in the mould with the good product of shaping.

Preferably, the hydraulic transmission device comprises a total hydraulic cavity arranged in the die mounting block, a second oil pipeline is arranged between the total hydraulic cavity and the hydraulic cylinder, a partition plate is fixedly arranged on the inward end wall of the total hydraulic cavity, a lower transmission hydraulic cavity and an upper transmission hydraulic cavity are arranged in the total hydraulic cavity, an arc-shaped hydraulic cavity is further arranged in the die mounting block and is communicated with the lower transmission hydraulic cavity, an arc-shaped hydraulic push rod is slidably arranged in the arc-shaped hydraulic cavity and extends out of the arc-shaped hydraulic cavity, the arc-shaped hydraulic push rod is fixedly connected with the demolding hydraulic box, a sequencing slide block is slidably arranged in the lower transmission hydraulic cavity, a sequencing thrust spring is arranged between the sequencing slide block and the partition plate, and a first oil-permeable box is fixedly arranged on the upper wall in the upper transmission hydraulic cavity, the first oil-permeable sliding groove is arranged in the first oil-permeable box, the second oil-permeable sliding block is arranged in the first oil-permeable sliding groove in a sliding mode, the second oil-permeable sliding block is provided with an oil-permeable thrust spring between the wall of the outer end of the first oil-permeable sliding groove, the first oil-permeable hole is formed in the first oil-permeable box, the second oil-permeable hole is formed in the second oil-permeable sliding block, an external oil-permeable cavity is formed in the second oil-permeable sliding block, and the power transmission function of the demolding device is achieved through a hydraulic transmission device.

The invention has the beneficial effects that: this device can realize injection moulding and cooling drawing of patterns's automation through the control to each power supply, and injection mold passes through conveyer and constantly changes, can wait to cool off on the transfer device after moulding plastics, also can send special cooling chamber cooling into, and the cooling is accomplished and can realize automatic drawing of patterns, easy operation, the workman only need regularly add according to measuring the ground the raw materials of moulding plastics can, efficient, very big convenient production reduces workman's work fatigue intensity.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an automatic continuous injection molding and demolding device according to the present invention;

FIG. 2 is a schematic structural view of A-A of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the enlarged view B of FIG. 1 according to the present invention;

FIG. 4 is a schematic structural diagram of an enlarged view C shown in FIG. 1 according to the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The invention will now be described in detail with reference to fig. 1-4, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

As shown in fig. 1-4, an automatic continuous injection demolding device of the invention comprises a central mounting block 11 and two sets of bilaterally symmetrical circulating conveyor belts 10, wherein a plurality of sets of injection molds are fixedly arranged at the upper ends of the circulating conveyor belts 10, each injection mold comprises a base 12 fixedly arranged on the upper end surface of the corresponding circulating conveyor belt 10, a base blanking through hole 13 and a mold mounting block sliding cavity 15 are arranged in each base 12, a mold mounting block 68 is arranged in each mold mounting block sliding cavity 15 in a sliding manner, a change cavity 17 and a mounting block blanking through hole 14 are arranged in each mold mounting block 68, each base blanking through hole 13 is communicated with each change cavity 17 through each mounting block blanking through hole 14, a hydraulic cylinder 16 is fixedly arranged in each mold mounting block 68, a first hydraulic pushing cavity 18 is arranged in each mold mounting block 68, a first oil pipeline 86 is arranged between each first hydraulic pushing cavity 18 and the hydraulic cylinder 16, a first hydraulic push rod 19 is arranged in the first hydraulic push cavity 18 in a sliding manner, the first hydraulic push rod 19 extends out of the first hydraulic push cavity 18, the outward end face of the first hydraulic push rod 19 is fixedly connected with the outward end wall of the die mounting block sliding cavity 15, a static die 23 is fixedly mounted in the die mounting block 68, an injection port 50 and a static die cavity 84 are arranged in the static die 23, an anti-sticking oblique block 24 is fixedly mounted on the static die 23, guide grooves 22 which are symmetrical in the front and back directions are arranged in the front and back end walls of the change cavity 17, a raw material processing cavity 30 and a filtering blanking cavity 35 are arranged in the central mounting block 11, the raw material processing cavity 30 is communicated with the filtering blanking cavity 35, the raw material processing cavity 30 is communicated with the outside, a high-temperature heater 31 is fixedly mounted on the inner wall of the raw material processing cavity 30, and a raw material processing device for processing injection molding raw materials is arranged in the raw material processing, an injection device for injection molding is fixedly installed in the central installation block 11, a demolding device for taking out a molded product from a mold is fixedly arranged on the mold installation block 68, and a hydraulic transmission device for power transmission is arranged in the mold installation block 68.

Beneficially, raw materials processing apparatus includes fixed mounting and is in the multiunit bracing piece 25 of the bilateral symmetry of 11 up end of central authorities 'installation piece, fixed mounting has dustproof kicking block 27 on the bracing piece 25, terminal surface fixed mounting has agitator motor 28 and four evenly distributed's of group connecting rod 26 under the dustproof kicking block 27, connecting rod 26 with sliding connection between the high temperature heating ware 31, agitator motor 28 power down is provided with agitator motor shaft 29, fixed mounting has multiunit stirring piece 32 on the agitator motor shaft 29, agitator motor shaft 29 lower extreme fixed mounting has stirring base 85, fixed mounting has centrifugal filter 34 on the stirring base 85, through raw materials processing apparatus has realized the processing to the raw materials of moulding plastics.

Advantageously, the injection device comprises an injection box 48 fixedly installed in the central installation block 11, an injection cavity 45 is installed in the injection box 48, an injection motor 51 is fixedly installed on the left end wall of the injection cavity 45, a motor shaft support block 55 is fixedly installed in the injection cavity 45, an injection motor shaft 46 is arranged on the injection motor 51 for driving to the right and penetrates through the motor shaft support block 55, the injection motor shaft 46 is rotatably connected with the motor shaft support block 55, a pushing spiral knife 47 is fixedly installed on the injection motor shaft 46 at the right end of the motor shaft support block 55, an injection inlet block 43 is also fixedly installed in the central installation block 11, an injection inlet cavity 44 is arranged in the injection inlet block 43, the injection inlet cavity 44 is communicated with the injection cavity 45, an auxiliary blanking port 36 and a unidirectional blanking cavity 39 are also arranged in the central installation block 11, the auxiliary blanking port 36 is communicated with the filtering blanking cavity 35, the one-way blanking cavity 39 is communicated with the injection inlet cavity 44, a unidirectional blanking plate 37 is arranged in the unidirectional blanking cavity 39 in a sliding manner, unidirectional blanking slide block chutes 40 which are bilaterally symmetrical are arranged in the unidirectional blanking cavity 39, a unidirectional blanking slide block 42 is arranged in the unidirectional blanking slide block chute 40 in a sliding way, the unidirectional blanking slide block 42 is fixedly connected with the unidirectional blanking plate 37, a one-way blanking thrust spring 41 is arranged between the one-way blanking plate 37 and the bottom wall of the one-way blanking cavity 39, two sets of bilaterally symmetrical one-way blanking through holes 38 are arranged in the one-way blanking plate 37, an injection needle 49 is fixedly arranged at the right end of the injection box 48, the injection needle 49 extends out of the central mounting block 11 rightwards, the injection needles 49 communicate with the injection chamber 45, and the injection device performs the function of injecting the injection material into the injection mold.

Beneficially, the demolding device comprises two sets of demolding rotating shaft fixing frames 58 which are fixedly mounted on the inward end face of the mold mounting block 68 and are symmetrical in the front-back direction, a demolding rotating shaft 54 is rotatably arranged between the demolding rotating shaft fixing frames 58, a fixing block 53 is fixedly mounted on the demolding rotating shaft 54, a demolding hydraulic tank 76 is fixedly mounted on the fixing block 53, a demolding hydraulic cavity 59 is arranged in the demolding hydraulic tank 76, a demolding hydraulic limiting block 57 is fixedly mounted in the demolding hydraulic cavity 59, a movable mold 77 is slidably arranged in the demolding hydraulic cavity 59, the movable mold 77 extends out of the demolding hydraulic cavity 59, a demolding guide pillar sliding groove 79 and a movable mold cavity 83 are arranged in the movable mold 77, a demolding guide pillar 78 is slidably arranged in the demolding guide pillar sliding groove 79, the demolding guide pillar 78 is slidably connected with the guide groove 22, and a demolding pushing limiting block 81, a demoulding push block 82 is arranged in the movable die cavity 83 in a sliding mode, a demoulding connecting rod 80 is fixedly arranged between the demoulding push block 82 and the demoulding guide post 78, a demoulding connecting pipe 75 is fixedly installed on the demoulding hydraulic tank 76, a demoulding connecting cavity 74 is arranged in the demoulding connecting pipe 75, the demoulding connecting cavity 74 is communicated with the demoulding hydraulic cavity 59, and the demoulding device achieves the function of taking out a formed product from a die.

Beneficially, the hydraulic transmission device includes a main hydraulic cavity 21 disposed in the die mounting block 68, a second oil pipeline 20 is disposed between the main hydraulic cavity 21 and the hydraulic cylinder 16, a partition plate 64 is fixedly mounted on an inward end wall of the main hydraulic cavity 21, a lower transmission hydraulic cavity 61 and an upper transmission hydraulic cavity 66 are disposed in the main hydraulic cavity 21, an arc-shaped hydraulic cavity 60 is further disposed in the die mounting block 68, the arc-shaped hydraulic cavity 60 is communicated with the lower transmission hydraulic cavity 61, an arc-shaped hydraulic push rod 56 is slidably disposed in the arc-shaped hydraulic cavity 60, the arc-shaped hydraulic push rod 56 extends out of the arc-shaped hydraulic cavity 60, the arc-shaped hydraulic push rod 56 is fixedly connected with the demolding hydraulic tank 76, a sequencing slider 62 is slidably disposed in the lower transmission hydraulic cavity 61, and a sequencing thrust spring 63 is disposed between the sequencing slider 62 and the partition plate 64, go up transmission hydraulic pressure chamber 66 interior roof fixed mounting and have first oil tank 67 that passes through, be provided with first oily spout 69 that passes through in the first oil tank 67 that passes through, it is provided with the second slider 72 that passes through to slide in the first oily spout 69 that passes through, the second pass through oily slider 72 with first oily spout 69 that passes through is provided with between the wall of outer end and passes through oily thrust spring 70, first be provided with first oil hole 65 that passes through on passing through the oil tank 67, it passes through oil hole 71 to be provided with the second on the slider 72 to pass through to the second, the second passes through to be provided with external oil pocket 73 that passes through in the oily slider 72, has realized the power transmission's to shedder function through hydraulic transmission.

The applicant will now specifically describe an automated continuous injection molding ejection apparatus of the present application with reference to the accompanying figures 1-4 and the above description:

in an initial state, the unidirectional blanking thrust spring 41 makes the unidirectional blanking plate 37 and the top wall in the unidirectional blanking cavity 39 tightly attached, the auxiliary blanking port 36 and the unidirectional blanking cavity 39 are not communicated, the right demoulding guide pillar 78 is at the lowest end of the right guide groove 22, and the total hydraulic cavity 21, the upper transmission hydraulic cavity 66 and the lower transmission hydraulic cavity 61 are filled with oil;

when the injection molding machine starts to work, the circulating conveyor belt 10 conveys one group of injection molds to the right side and the right side of the central installation block 11, the right side hydraulic cylinder 16 is communicated with the right side through the right side first oil pipeline 86, oil is injected into the first hydraulic pushing cavity 18, the right side first hydraulic push rod 19 enables the right side mold installation block 68 to move leftwards, and at the moment, the injection needle 49 is injected into the right side injection port 50.

At this time, the right hydraulic cylinder 16 injects oil into the right main hydraulic chamber 21 through the right second oil pipeline 20, at this time, the oil enters the right lower transmission hydraulic chamber 61 through the right main hydraulic chamber 21, the right sequencing slider 62 moves downward, the right oil in the right arc hydraulic chamber 60 increases, the right arc hydraulic push rod 56 moves outward along the right arc hydraulic chamber 60, the right arc hydraulic push rod 56 drives the right demolding hydraulic tank 76 to rotate, the right demolding hydraulic tank 76 drives the right demolding connecting pipe 75 to rotate, the right demolding guide pillar 78 slides in the right guide groove 22, and the right demolding guide pillar 78 drives the right demolding push block 82 to slide in the right movable mold cavity 83 through the right demolding connecting rod 80.

When the right side demolding hydraulic tank 76 rotates to the maximum angle, the right side demolding push block 82 is located at the right side at the rightmost end of the movable mold cavity 83, the right side demolding connecting pipe 75 is in contact with the right side second oil penetrating slide block 72 and pushes the right side second oil penetrating slide block 72 rightwards, the right side upper transmission hydraulic cavity 66 and the right side are arranged between the external oil penetrating cavity 73 through the right side first oil penetrating hole 65 and the right side second oil penetrating hole 71, the right side demolding connecting cavity 74 is in communication with the right side external oil penetrating cavity 73, oil enters the right side demolding hydraulic cavity 59, the right side movable mold 77 moves leftwards and contacts with the right side anti-sticking oblique block 24, and the right side movable mold cavity 83 is in communication with the right side static mold cavity 84.

At this time, the injection molding raw material is continuously put into the raw material processing chamber 30 by the worker, the stirring motor 28 is started to drive the stirring motor shaft 29 to rotate, the stirring motor shaft 29 drives the raw material processing chamber 30 to rotate, the high temperature heater 31 is started to heat the raw material at this time, the raw material processing chamber 30 stirs the raw material, when the raw material falls on the stirring base 85, the raw material is improved by the centrifugal filter screen 34 to be continuously centrifugally filtered and then falls into the filtering blanking chamber 35, when the clean raw material enters the unidirectional blanking chamber 39 from the auxiliary blanking port 36, the unidirectional blanking plate 37 moves downwards, the unidirectional blanking through hole 38 communicates the auxiliary blanking port 36 with the unidirectional blanking chamber 39, the clean raw material enters the injection chamber 45 through the injection inlet chamber 44, at this time, the injection motor 51 is started to drive the injection motor shaft 46 to rotate, the injection motor shaft 46 drives the pushing spiral knife 47 to rotate, the pushing spiral knife 47 enables clean raw materials to pass through the injection needle 49 and the injection port 50 to be injected to the right in the static die cavity 84 and the moving die cavity 83, then the right hydraulic cylinder 16 is arranged on the right through the right in the first oil pipeline 86 to the right, oil is sucked in the first hydraulic pushing cavity 18, the right in the first hydraulic push rod 19 enables the right in the die mounting block 68 to move rightwards, at the moment, the injection needle 49 is pulled out from the right in the injection port 50, and then the circulating conveyor belt 10 is started to replace the next set of injection dies.

The injection mold that has been injected cools, and when the cooled injection mold is located right to the left of the center mounting block 11, the hydraulic cylinder 16 on the left side sucks the oil into the total hydraulic chamber 21 on the left side through the second oil delivery pipe 20 on the left side, and due to the sequencing thrust spring 63 on the left side, the total hydraulic chamber 21 on the left side first sucks the oil into the demolding hydraulic chamber 59 on the left side through the demolding connecting pipe 75 on the left side, and the movable mold 77 on the left side moves to the left, and since the movable mold cavity 83 is much larger than the static mold cavity 84, the product is forced by the movable mold cavity 83, so the product slides out of the static mold cavity 84 on the left side along with the movable mold 77 on the left side in the movable mold cavity 83 on the left side.

When the left movable mold 77 is located at the leftmost end, no oil is sucked into the left demolding hydraulic chamber 59, at this time, the left total hydraulic chamber 21 sucks oil into the left lower transmission hydraulic chamber 61, at this time, the left arc-shaped hydraulic push rod 56 rotates along the left arc-shaped hydraulic chamber 60, the left arc-shaped hydraulic push rod 56 drives the left demolding hydraulic tank 76 to rotate, the left demolding hydraulic tank 76 drives the left demolding connecting pipe 75 to rotate, the left demolding guide pillar 78 slides in the left guide groove 22, the left demolding guide pillar 78 drives the left demolding push block 82 to slide in the left movable mold cavity 83 through the left demolding connecting rod 80, the left demolding push block 82 pushes a product out of the left movable mold cavity 83, and at this time, the product falls out from the mounting block blanking through hole 14 and the base blanking through hole 13, the injection mold is then transported to the right to be ready for injection molding.

The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides an automatic change shedder that moulds plastics in succession, includes central authorities 'installation piece and bilateral symmetry's two sets of circulation conveyer belt, its characterized in that: the upper end of the circulating conveyor belt is fixedly provided with a plurality of groups of injection molds, each injection mold comprises a base fixedly installed on the upper end face of the circulating conveyor belt, a base blanking through hole and a mold installation block sliding cavity are arranged in the base, a mold installation block is arranged in the mold installation block sliding cavity in a sliding manner, a change cavity and an installation block blanking through hole are arranged in the mold installation block, the base blanking through hole is communicated with the change cavity through the installation block blanking through hole, a hydraulic cylinder is fixedly installed in the mold installation block, a first hydraulic pushing cavity is arranged in the mold installation block, a first oil pipeline is arranged between the first hydraulic pushing cavity and the hydraulic cylinder, a first hydraulic push rod is arranged in the first hydraulic pushing cavity in a sliding manner and extends outwards from the first hydraulic pushing cavity, and the outwards end face of the first hydraulic push rod is fixedly connected with the outwards end wall of the mold installation block sliding cavity, a static die is fixedly arranged in the die mounting block, an injection port and a static die cavity are arranged in the static die, an anti-sticking inclined block is fixedly arranged on the static die, guide grooves which are symmetrical front and back are arranged in the front end wall and the back end wall of the change cavity, a raw material processing cavity and a filtering blanking cavity are arranged in the central mounting block, the raw material processing cavity is communicated with the filtering blanking cavity, the raw material processing cavity is communicated with the outside, a high-temperature heater is fixedly arranged on the inner wall of the raw material processing cavity, a raw material processing device for processing injection molding raw materials is arranged in the raw material processing cavity, an injection device for injection molding is fixedly arranged in the central mounting block, a demolding device for taking out a molded product from the die is fixedly arranged on the die mounting block, and a hydraulic transmission device for power transmission is arranged in the die mounting block; the raw material processing device comprises a plurality of groups of bilaterally symmetrical supporting rods fixedly arranged on the upper end surface of the central mounting block, a dustproof ejector block is fixedly arranged on each supporting rod, a stirring motor and four groups of uniformly distributed connecting rods are fixedly arranged on the lower end surface of the dustproof ejector block, the connecting rods are connected with the high-temperature heater in a sliding mode, a stirring motor shaft is arranged on the downward power of the stirring motor, a plurality of groups of stirring blocks are fixedly arranged on the stirring motor shaft, a stirring base is fixedly arranged at the lower end of the stirring motor shaft, and a centrifugal filter screen is fixedly arranged on the stirring base; the injection device comprises an injection box fixedly installed in the central installation block, an injection cavity is formed in the injection box, an injection motor is fixedly installed on the left end wall of the injection cavity, a motor shaft supporting block is fixedly installed in the injection cavity, an injection motor shaft is arranged on the injection motor in a rightward power mode and penetrates through the motor shaft supporting block, the injection motor shaft is rotatably connected with the motor shaft supporting block, a pushing spiral knife is fixedly installed on the injection motor shaft at the right end of the motor shaft supporting block, an injection inlet block is further fixedly installed in the central installation block, an injection inlet cavity is formed in the injection inlet block and is communicated with the injection cavity, an auxiliary blanking hole and a one-way blanking cavity are further formed in the central installation block and are communicated with the filtering blanking cavity, the unidirectional blanking cavity is communicated with the injection inlet cavity, a unidirectional blanking plate is arranged in the unidirectional blanking cavity in a sliding manner, unidirectional blanking slide block chutes which are bilaterally symmetrical are arranged in the unidirectional blanking cavity, unidirectional blanking slide blocks are arranged in the unidirectional blanking slide block chutes in a sliding manner and fixedly connected with the unidirectional blanking plate, a unidirectional blanking thrust spring is arranged between the unidirectional blanking plate and the bottom wall in the unidirectional blanking cavity, two sets of bilaterally symmetrical unidirectional blanking through holes are arranged in the unidirectional blanking plate, an injection needle is fixedly arranged at the right end of the injection box and extends out of the central mounting block rightwards, and the injection needle is communicated with the injection cavity; the demolding device comprises two sets of demolding rotating shaft fixing frames which are fixedly installed on the inward end face of the mold installation block and are symmetrical front and back, a demolding rotating shaft is rotatably arranged between the demolding rotating shaft fixing frames, a fixed block is fixedly installed on the demolding rotating shaft, a demolding hydraulic box is fixedly installed on the fixed block, a demolding hydraulic cavity is arranged in the demolding hydraulic cavity, a demolding hydraulic limiting block is fixedly installed in the demolding hydraulic cavity, a movable mold is arranged in the demolding hydraulic cavity in a sliding mode, the movable mold extends out of the demolding hydraulic cavity, a demolding guide pillar sliding groove and a movable mold cavity are formed in the movable mold, a demolding guide pillar is arranged in the demolding guide pillar sliding groove in a sliding mode and is in sliding connection with the guide groove, a demolding pushing limiting block is fixedly installed in the movable mold cavity, a demolding pushing block is arranged in the movable mold cavity in, a demoulding connecting pipe is fixedly installed on the demoulding hydraulic box, and a demoulding connecting cavity is arranged in the demoulding connecting pipe and is communicated with the demoulding hydraulic cavity; the hydraulic transmission device comprises a total hydraulic cavity arranged in the die mounting block, a second oil conveying pipeline is arranged between the total hydraulic cavity and the hydraulic cylinder, a partition plate is fixedly arranged on the inward end wall of the total hydraulic cavity, a lower transmission hydraulic cavity and an upper transmission hydraulic cavity are arranged in the total hydraulic cavity, an arc-shaped hydraulic cavity is further arranged in the die mounting block and is communicated with the lower transmission hydraulic cavity, an arc-shaped hydraulic push rod is arranged in the arc-shaped hydraulic cavity in a sliding manner and extends out of the arc-shaped hydraulic cavity, the arc-shaped hydraulic push rod is fixedly connected with the demolding hydraulic box, a sequencing slide block is arranged in the lower transmission hydraulic cavity in a sliding manner, a sequencing thrust spring is arranged between the sequencing slide block and the partition plate, and a first oil-permeable box is fixedly arranged on the inner top wall of the upper transmission hydraulic cavity, the first oil-permeable sliding groove is arranged in the first oil-permeable box, the second oil-permeable sliding block is arranged in the first oil-permeable sliding groove in a sliding mode, the second oil-permeable sliding block and the first oil-permeable sliding groove are provided with oil-permeable thrust springs between walls of the outer ends, the first oil-permeable box is provided with a first oil-permeable hole, the second oil-permeable sliding block is provided with a second oil-permeable hole, and an external oil-permeable cavity is arranged in the second oil-permeable sliding block.