CN112026089A

CN112026089A - Injection molding machine capable of controlling material to enter and exit

Info

Publication number: CN112026089A
Application number: CN202010859478.5A
Authority: CN
Inventors: 何公平
Original assignee: Shanghai Yizhao Technology Co ltd
Current assignee: Shanghai Yizhao Technology Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2020-12-04

Abstract

The invention discloses an injection molding machine capable of controlling material to enter and exit, which comprises a base, wherein a supporting seat is fixedly arranged on the upper end surface of the right side of the base, a demoulding support is fixedly arranged on the upper end surface of the left side of the base, a fixed die plate is fixedly arranged on the upper end surface of the base between the demoulding support and the supporting seat, the injection tube is fixedly arranged between the right end surface of the fixed die plate and the left end surface of the supporting seat, and the left end of the injection tube is provided with the extrusion cavity, so that the injection device can effectively control the addition of the raw materials, prevent the consumption of more energy sources in the production process caused by adding too many raw materials at one time, through utilizing hydraulic pressure as power, can effectual completion extrusion in-process pressurize, be favorable to the shaping of product, through utilizing extrusion head inner space once more, carry out equipment with the inside melting raw materials of machine when equipment shut down, effectively prevent that the raw materials from solidifying and influencing next use.

Description

Injection molding machine capable of controlling material to enter and exit

Technical Field

The invention relates to the technical field of injection molding equipment, in particular to an injection molding machine capable of controlling material to enter and exit.

Background

In our daily life, can use many injection moulding product, generally adopt the screw rod injection mode to accomplish the raw materials injection in injection moulding product production process, screw rod injection system occupies great space, need more heat energy when the raw materials melts simultaneously, can not effectual utilization heat energy, can't effectively retrieve the inside melting raw materials of equipment when equipment stops production, the raw materials solidifies the use of influence equipment next time, the feeding process of prior art adopts the mode of lasting feeding, can not be as required ration feeding, the feeding precision is lower. The present invention sets forth a device that solves the above problems.

Disclosure of Invention

The technical problem is as follows: ordinary injection moulding equipment can not take out the inside melting raw materials of equipment after stopping production, influences the continuation use of equipment next time, and the feeding accuracy of current equipment is not enough simultaneously, can not effectual accomplish the effect of energy saving.

In order to solve the problems, the injection molding machine capable of controlling the material to come in and go out is designed in the embodiment, and comprises a base, wherein a supporting seat is fixedly arranged on the upper end surface of the right side of the base, a demolding support is fixedly arranged on the upper end surface of the left side of the base, a fixed mold plate is fixedly arranged on the upper end surface of the base between the demolding support and the supporting seat, an injection pipe is fixedly arranged between the right end surface of the fixed mold plate and the left end surface of the supporting seat, an extrusion cavity is arranged at the left end of the injection pipe, an extrusion head capable of sliding left and right is arranged in the extrusion cavity, a feeding cavity is formed between the right end surface of the extrusion head and the left end surface of the supporting seat, heating plates are symmetrically arranged up and down at the left end of the extrusion head, a discharge channel communicated with the extrusion cavity is arranged at the left end of the extrusion head, a, the right side of the heat insulation plate is provided with a crankshaft cavity, the right side of the crankshaft cavity is provided with a piston cavity, the lower side of the crankshaft cavity is provided with a power switching cavity, a power switching plate capable of sliding left and right is arranged in the power switching cavity, the upper end surface and the lower end surface of the power switching plate are mutually abutted with the upper wall surface and the lower wall surface of the power switching cavity, the left side of the power switching cavity is provided with a conveying pump fixed in the extrusion head, the left wall surface of the power switching cavity is rotatably provided with a pump material shaft in power connection with the conveying pump, the inner part of the piston cavity is provided with a piston capable of moving left and right, the right end of the piston cavity is fixedly provided with a sealing plate capable of sealing the piston cavity, the lower side of the piston cavity is provided with a hydraulic oil cavity, the upper end surface of the left side of the injection pipe is fixedly provided with a feeding seat, the right side of the upper end of the feeding channel is provided with a feeding closed door cavity which is communicated with each other, a feeding closed door capable of sliding left and right is arranged in the feeding closed door cavity, a melting channel is communicated between the lower wall surface of the feeding channel and the extrusion cavity, a melting closed cavity which is communicated with each other is arranged on the left side of the upper end of the melting channel, a melting closed door capable of sliding left and right is arranged in the melting closed cavity, a pushing cavity which penetrates through the upper end surface of the injection tube is arranged on the lower side of the right end surface of the feeding closed door cavity, the upper end surface of the extrusion head is fixedly provided with a push rod which extends to the right side of the feeding closed door and is mutually abutted against the right end surface of the feeding closed door, guide rods are vertically symmetrical and fixedly arranged between the right end surface of the demolding support and the left end surface of the fixed mold plate, the right ends of the guide rods are provided, the left end face of the fixed die plate is provided with a pressing cavity with a left opening, a feeding hole is communicated between the pressing cavity and the extrusion cavity, material returning holes penetrating through the left end face and the right end face of the movable die plate are symmetrically formed in the upper side and the lower side of the screw cavity, a material returning rod capable of moving left and right is arranged in the material returning holes, and material returning plates are fixedly arranged at the left ends of the material returning rod on the upper side and the lower side.

Preferably, a power motor is fixedly arranged inside the power switching plate, the right end of the power motor is in power connection with a transmission shaft extending rightwards, a driving bevel gear is fixedly arranged at the right end of the transmission shaft, a crankshaft penetrating through the upper wall surface and the lower wall surface of the crankshaft cavity is rotatably arranged on the upper wall surface of the right end of the power switching cavity, and a driven bevel gear meshed with the driving bevel gear is fixedly arranged at the lower end of the crankshaft.

Preferably, the power switching shaft extending leftwards is connected to the power at the left end of the power motor in a power connection mode, a spline gear is fixedly arranged on the outer circular surface of the left end of the power switching shaft, a spline sleeve is fixedly arranged on the outer circular surface of the right end of the pump material shaft, a spline sleeve cavity with a right opening is arranged in the spline sleeve, and the spline gear can transmit the power of the power switching shaft to the pump material shaft when extending into the spline sleeve cavity.

Preferably, the fixed bleeder valve that is equipped with the control switching of discharging channel right-hand member, the bleeder valve right-hand member with the intercommunication is equipped with material receiving pipe under the delivery pump between the wall, the delivery pump is gone up the wall and is equipped with the discharging pipe with external intercommunication, the discharging pipe can with the inside melting material recovery of extrusion chamber, power switches the chamber left side wall longitudinal symmetry and intercommunication and is equipped with electro-magnet core chamber, the fixed electromagnetic core that is equipped with of electro-magnet core chamber left side wall, the electromagnetic core right-hand member is equipped with the promotion head that can the horizontal slip, promote the head right-hand member with the mutual butt of power switching board left end face, power switching board left end face with the fixed power switching spring that is equipped with between the chamber left side wall, promote the head left end face with the fixed reset spring that is equipped with between the electro-magnet.

Preferably, the crankshaft cavity is internally provided with a connecting rod extending to the outer circular surface of the crankshaft, the right end of the connecting rod is hinged to the left end face of the piston, the upper end of the feeding cavity is communicated with the piston cavity through an oil outlet pipe, an oil inlet pipe is communicated between the hydraulic oil cavity and the piston cavity, an oil return pipe is communicated between the hydraulic oil cavity and the feeding cavity, an oil return valve is fixedly arranged inside the oil return pipe, and a sealing check valve is fixedly arranged inside the oil outlet pipe and the oil inlet pipe.

Preferably, the demolding support is internally and fixedly provided with a material returning motor at a position corresponding to the screw cavity, the material returning plate at a position corresponding to the screw cavity is communicated with a material returning plate hole in the left and right direction, the left end of the screw cavity is rotatably provided with a screw rod which penetrates through the material returning plate hole and is in power connection with the material returning motor, the screw rod is in threaded fit with the wall surface of the screw cavity, a material returning spring sleeved on the outer side of the material returning rod is fixedly arranged between the right end surface of the material returning plate and the left end surface of the movable mold plate, and the right end surface of the demolding support is vertically symmetrical and fixedly provided with a material returning ejection column.

Preferably, a feeding closed door spring is fixedly arranged between the right wall surface of the feeding closed door cavity and the right end surface of the feeding closed door, a melting closed door spring is fixedly arranged between the left end surface of the melting closed door and the left wall surface of the melting closed cavity, and a pull rope is fixedly arranged between the left end surface of the melting closed door and the left end surface of the feeding closed door.

The invention has the beneficial effects that: according to the invention, the raw material addition is effectively controlled, so that the situation that more energy is consumed in the production process due to the fact that too much raw material is added at one time is prevented, the pressure maintaining in the extrusion forming process can be effectively finished by using hydraulic pressure as power, the product forming is facilitated, the molten raw material in the machine is conveyed out of the equipment when the equipment stops running by using the internal space of the extrusion head again, and the influence of solidification of the raw material on the next use is effectively prevented.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic view of the overall structure of an injection molding machine capable of controlling the input and output of materials according to the present invention;

FIG. 2 is an enlarged view of the structure of "A" in FIG. 1;

FIG. 3 is an enlarged view of the structure of "B" in FIG. 1;

fig. 4 is an enlarged view of the structure of "C" of fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, for ease of description, the orientations described below will now be defined as follows: 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.

The invention relates to an injection molding machine capable of controlling material to come in and go out, which comprises a base 11, wherein a supporting seat 12 is fixedly arranged on the upper end surface of the right side of the base 11, a demolding support 13 is fixedly arranged on the upper end surface of the left side of the base 11, a fixed mold plate 66 is fixedly arranged on the upper end surface of the base 11 between the demolding support 13 and the supporting seat 12, an injection tube 14 is fixedly arranged between the right end surface of the fixed mold plate 66 and the left end surface of the supporting seat 12, a squeezing cavity 17 is arranged at the left end of the injection tube 14, a squeezing head 15 capable of sliding left and right is arranged in the squeezing cavity 17, a feeding cavity 16 is formed between the right end surface of the squeezing head 15 and the left end surface of the supporting seat 12, heating plates 19 are symmetrically arranged up and down and fixedly arranged at the left end of the squeezing head 15, a discharging channel 18 mutually communicated with the squeezing cavity 17 is arranged at the left end, the right side of the heat insulation plate 21 is provided with a crankshaft cavity 39, the right side of the crankshaft cavity 39 is provided with a piston cavity 57, the lower side of the crankshaft cavity 39 is provided with a power switching cavity 37, a power switching plate 38 capable of sliding left and right is arranged in the power switching cavity 37, the upper and lower end faces of the power switching plate 38 are mutually abutted with the upper and lower wall faces of the power switching cavity 37, the left side of the power switching cavity 37 is provided with a conveying pump 51 fixed in the extrusion head 15, the left wall face of the power switching cavity 37 is rotatably provided with a pump material shaft 80 in power connection with the conveying pump 51, the inside of the piston cavity 57 is provided with a piston 58 capable of moving left and right, the right end of the piston cavity 57 is fixedly provided with a sealing plate 60 capable of sealing the piston cavity 57, the lower side of the piston cavity 57 is provided with a hydraulic oil cavity 59, the upper end face of the left side of the injection tube 14 is fixedly provided, the upper end face of the feeding seat 23 corresponding to the feeding channel 26 is fixedly provided with a feeding guide plate 24, the right side of the upper end of the feeding channel 26 is provided with a feeding closed door cavity 25 which is communicated with each other, a feeding closed door 27 capable of sliding left and right is arranged in the feeding closed door cavity 25, a melting channel 33 is communicated between the lower wall face of the feeding channel 26 and the extrusion cavity 17, the left side of the upper end of the melting channel 33 is provided with a melting closed cavity 34 which is communicated with each other, a melting closed door 35 capable of sliding left and right is arranged in the melting closed cavity 34, the lower side of the right end of the feeding closed door cavity 25 is provided with a pushing cavity 28 which penetrates through the upper end face of the injection pipe 14, the upper end face of the extrusion head 15 is fixedly provided with a pushing rod 30 which extends to the right side of the feeding closed door 27 and is mutually abutted against the right end face of the feeding closed door 27, the right end face of the demolding support 13 and the left end face of the, the left end face of the movable die plate 69 is provided with a left-opening screw cavity 77, the left end face of the fixed die plate 66 is provided with a left-opening pressing cavity 68, a feeding hole 67 is communicated between the pressing cavity 68 and the extrusion cavity 17, material returning holes 70 penetrating through the left end face and the right end face of the movable die plate 69 are symmetrically formed in the upper side and the lower side of the screw cavity 77, material returning rods 75 capable of moving left and right are arranged in the material returning holes 70, and material returning plates 74 are fixedly arranged at the left ends of the material returning rods 75 on the upper side and the lower side.

Advantageously, a power motor 45 is fixedly arranged inside the power switching plate 38, a right end of the power motor 45 is in power connection with a transmission shaft 44 extending rightwards, a driving bevel gear 43 is fixedly arranged at the right end of the transmission shaft 44, a crankshaft 40 penetrating through the upper wall surface and the lower wall surface of the crankshaft cavity 39 is rotatably arranged on the upper wall surface of the right end of the power switching cavity 37, and a driven bevel gear 42 meshed with the driving bevel gear 43 is fixedly arranged at the lower end of the crankshaft 40.

Beneficially, the power switching shaft 46 extending leftwards is dynamically connected to the left end of the power motor 45, a spline gear 47 is fixedly arranged on an outer circular surface of the left end of the power switching shaft 46, a spline sleeve 53 is fixedly arranged on an outer circular surface of the right end of the pump material shaft 80, a spline sleeve cavity 54 with a right opening is arranged in the spline sleeve 53, and when the spline gear 47 extends into the spline sleeve cavity 54, the power of the power switching shaft 46 can be transmitted to the pump material shaft 80.

Beneficially, a discharge valve 20 for controlling opening and closing is fixedly arranged at the right end of the discharge channel 18, a material receiving pipe 55 is arranged between the right end of the discharge valve 20 and the lower wall surface of the conveying pump 51 in a communicating manner, the upper wall surface of the delivery pump 51 is communicated with the outside and is provided with a discharge pipe 56, the discharge pipe 56 can recover the molten material in the extrusion cavity 17, the left wall surface of the power switching cavity 37 is symmetrical up and down and is communicated with an electromagnet core cavity 48, the left wall surface of the electromagnet core cavity 48 is fixedly provided with an electromagnet core 49, the right end of the electromagnetic iron core 49 is provided with a pushing head 50 capable of sliding left and right, the right end of the pushing head 50 is mutually abutted with the left end face of the power switching plate 38, a power switching spring 82 is fixedly arranged between the left end surface of the power switching plate 38 and the left wall surface of the power switching cavity 37, a return spring 81 is fixedly arranged between the left end surface of the pushing head 50 and the left wall surface of the electromagnet core cavity 48.

Beneficially, a connecting rod 41 extending to the inside of the piston cavity 57 is hinged to the outer circular surface of the crankshaft 40 inside the crankshaft cavity 39, the right end of the connecting rod 41 is hinged to the left end face of the piston 58, an oil outlet pipe 62 is communicated between the upper end of the feeding cavity 16 and the piston cavity 57, an oil inlet pipe 63 is communicated between the hydraulic oil cavity 59 and the piston cavity 57, an oil return pipe 64 is communicated between the hydraulic oil cavity 59 and the feeding cavity 16, an oil return valve 65 is fixedly arranged inside the oil return pipe 64, and a sealing check valve 61 is fixedly arranged inside the oil outlet pipe 62 and the oil inlet pipe 63 inside the sealing plate 60.

Beneficially, a material returning motor 73 is fixedly arranged inside the demolding support 13 at a position corresponding to the screw cavity 77, a material returning plate hole 78 is formed in the position, corresponding to the screw cavity 77, of the material returning plate 74 in a left-right communicating mode, a screw 79 penetrating through the material returning plate hole 78 and in power connection with the material returning motor 73 is rotatably arranged at the left end of the screw cavity 77, the screw 79 is in threaded fit with the inner wall surface of the screw cavity 77, a material returning spring 76 sleeved on the outer side of the material returning rod 75 is fixedly arranged between the right end surface of the material returning plate 74 and the left end surface of the movable die plate 69, and the material returning ejection posts 72 are vertically symmetrical and fixedly arranged on the right end surface of the demolding support 13.

Advantageously, a feeding closing door spring 85 is fixedly arranged between the right wall surface of the feeding closing door cavity 25 and the right end surface of the feeding closing door 27, a melting closing door spring 36 is fixedly arranged between the left end surface of the melting closing door 35 and the left wall surface of the melting closing cavity 34, and a pull rope 31 is fixedly arranged between the left end surface of the melting closing door 35 and the left end surface of the feeding closing door 27.

The following detailed description of the steps of an injection molding machine capable of controlling the material inlet and outlet is provided with reference to fig. 1 to 4: in the initial state, the extrusion head 15 is at the right limit position, the discharge valve 20 is at the closed state, the feeding closing door 27 is at the right limit position, the pulling rope 31 is in the tightened state, the melting closing door 35 is at the left limit position, the melting closing door spring 36 is at the compressed state, the power switching plate 38 is at the right limit position, the driven bevel gear 42 and the driving bevel gear 43 are meshed with each other, the spline gear 47 is at the right limit position, the pushing head 50 is at the right limit position, the movable die plate 69 is at the right limit position, and the power switching spring 82 is at the extended state.

When the electromagnetic heating block 32 and the heating plate 19 are powered on during operation, the electromagnetic heating block 32 and the heating plate 19 generate heat to generate high temperature, raw materials are added into the feeding channel 26 through the feeding guide plate 24, the raw materials in the feeding channel 26 enter the extrusion cavity 17 through the melting channel 33 after being melted, the power motor 45 is driven, so that the transmission shaft 44 is driven to rotate, the driving bevel gear 43 is driven to rotate, the crankshaft 40 is driven to rotate through the driven bevel gear 42 which is meshed with each other, the connecting rod 41 is driven to swing, and the piston 58 is driven to reciprocate, when the piston 58 moves to the left, the sealing one-way valve 61 in the oil inlet pipe 63 is opened, hydraulic oil in the hydraulic oil cavity 59 is sucked through the oil inlet pipe 63 and flows into the piston cavity 57, when the piston 58 moves to the right, the sealing one-way valve 61 in the oil inlet pipe 63 is closed, the sealing one-way valve 61 in the oil outlet pipe 62 is opened, and the hydraulic oil in the piston, then the extrusion head 15 is pushed to move leftwards, and then the pushing rod 30 pushes the feeding closing door 27 to stretch the feeding closing door spring 85 to move leftwards, and then the melting closing door 35 is pushed to move rightwards under the elasticity of the melting closing door spring 36, and then the feeding port of the feeding channel 26 and the melting channel 33 are closed, at this time, the extrusion head 15 extrudes the melting raw material in the extrusion cavity 17 to be conveyed into the pressing cavity 68 through the feeding hole 67, after a period of time, the injection molding part in the pressing cavity 68 is extruded and formed, the material returning motor 73 is driven to rotate, and then the screw 79 is driven to rotate, and then the movable die plate 69 is driven to move leftwards along the guide rod 71, and then the material returning plate 74 and the material returning rod 75 are driven to move leftwards together, when the material returning plate 74 is in contact with the material returning ejection column 72, the material returning plate 74 stops moving leftwards to extrude the material returning spring 76, the material returning rod, completing production of a product, driving the material returning motor 73 to rotate reversely, further driving the movable die plate 69 to move rightwards and reset, stopping driving the power motor 45, further driving the extrusion head 15 to move rightwards under the action of the feeding spring 22, further opening the oil return valve 65, returning hydraulic oil in the feeding cavity 16 to the interior of the hydraulic oil cavity 59 through the oil return pipe 64, driving the push rod 30 to move rightwards while the extrusion head 15 moves rightwards, further pulling the feeding closing door 27 to move rightwards through the elastic force of the feeding closing door spring 85, further pulling the melting closing door 35 through the pull rope 31 to compress the melting closing door spring 36 to reset, and at the moment, continuously adding raw materials into the feeding channel 26 and replenishing the molten raw materials in the feeding channel 26 into the extrusion cavity 17 through the melting channel 33; when the machine stops running: electrifying the electromagnetic iron core 49, generating magnetic force to attract the pushing head 50 to move leftwards, further driving the power switching plate 38 to move leftwards under the pulling force of the power switching spring 82, at the moment, the driven bevel gear 42 is disengaged from the driving bevel gear 43, the spline gear 47 extends into the spline sleeve cavity 54 and is meshed with the inner wall surface of the spline sleeve 53 to drive the pump material shaft 80 to rotate, further driving the delivery pump 51 to work, meanwhile, the discharge valve 20 is opened, further, the residual molten raw material in the extrusion cavity 17 is delivered out of the equipment through the discharge pipe 56 through the material receiving pipe 55, and the raw material is prevented from being solidified inside the equipment to influence the next use of the equipment.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims

1. The utility model provides a can control material injection molding machine that comes in and out, includes the base, its characterized in that: the injection mold is characterized in that a supporting seat is fixedly arranged on the upper end face of the right side of the base, a demolding support is fixedly arranged on the upper end face of the left side of the base, a fixed mold plate is fixedly arranged on the upper end face of the base between the demolding support and the supporting seat, an injection tube is fixedly arranged between the right end face of the fixed mold plate and the left end face of the supporting seat, an extrusion cavity is arranged at the left end of the injection tube, an extrusion head capable of sliding left and right is arranged in the extrusion cavity, a feeding cavity is formed between the right end face of the extrusion head and the left end face of the supporting seat, heating plates are symmetrically arranged at the upper part and the lower part of the left end of the extrusion head and fixedly provided with heating plates, a discharge channel mutually communicated with the extrusion cavity is arranged at the left end of the extrusion head, a heat insulation plate fixed in the extrusion head, the power switching cavity is internally provided with a power switching plate capable of sliding left and right, the upper end surface and the lower end surface of the power switching plate are mutually abutted with the upper wall surface and the lower wall surface of the power switching cavity, the left side of the power switching cavity is provided with a delivery pump fixed in the extrusion head, the left wall surface of the power switching cavity is rotatably provided with a pump material shaft in power connection with the delivery pump, the piston cavity is internally provided with a piston capable of moving left and right, the right end of the piston cavity is fixedly provided with a sealing plate capable of sealing the piston cavity, the lower side of the piston cavity is provided with a hydraulic oil cavity, the upper end surface of the left side of the injection tube is fixedly provided with a feeding seat, the upper end of the feeding seat is provided with a feeding channel with an upward opening, the upper end surface of the feeding seat at the position corresponding to the feeding channel is fixedly, the injection molding machine is characterized in that a feeding closed door capable of sliding left and right is arranged in a feeding closed door cavity, a melting channel is communicated between the lower wall surface of the feeding channel and the extrusion cavity, a melting closed cavity communicated with each other is arranged on the left side of the upper end of the melting channel, a melting closed door capable of sliding left and right is arranged in the melting closed cavity, a pushing cavity penetrating through the upper end surface of the injection tube is arranged on the lower side of the right end surface of the feeding closed door cavity, a pushing rod extending to the right side of the feeding closed door and abutted against the right end surface of the feeding closed door is fixedly arranged on the upper end surface of the extrusion head, guide rods are symmetrically and fixedly arranged between the right end surface of the demolding support and the left end surface of the fixed die plate in an up-down mode, a movable die plate capable of sliding left and right is arranged on the right end surface of the upper and lower guide rods, a, the material returning device is characterized in that a feeding hole is communicated between the pressing cavity and the extrusion cavity, material returning holes penetrating through the left end face and the right end face of the movable die plate are symmetrically formed in the upper side and the lower side of the screw cavity, material returning rods capable of moving left and right are arranged in the material returning holes, and material returning plates are fixedly arranged at the left ends of the material returning rods on the upper side and the lower side.

2. An injection molding machine capable of controlling material access as claimed in claim 1, wherein: the power switching plate is internally and fixedly provided with a power motor, the right end of the power motor is in power connection with a transmission shaft extending rightwards, the right end of the transmission shaft is fixedly provided with a driving bevel gear, the upper wall surface of the right end of the power switching cavity is rotatably provided with a crankshaft penetrating through the upper wall surface and the lower wall surface of the crankshaft cavity, and the lower end of the crankshaft is fixedly provided with a driven bevel gear meshed with the driving bevel gear.

3. An injection molding machine capable of controlling material access as claimed in claim 1, wherein: the power motor left end power is connected with the power switching axle that extends left, the outer disc of power switching axle left end is fixed and is equipped with spline gear, the outer disc of pump material axle right-hand member is fixed and is equipped with the spline sleeve, be equipped with the spline sleeve chamber of opening right in the spline sleeve, spline gear extends to can with the power transmission of power switching axle is for when the spline sleeve intracavity the pump material axle.

4. An injection molding machine capable of controlling material access as claimed in claim 1, wherein: the fixed bleeder valve that is equipped with the control switching of discharging channel right-hand member, the bleeder valve right-hand member with the intercommunication is equipped with receipts material pipe under the delivery pump between the wall, the delivery pump is gone up the wall and is equipped with the discharging pipe with external intercommunication, the discharging pipe can with the inside melting material recovery of extrusion chamber, power switches the chamber left side wall longitudinal symmetry and intercommunication and is equipped with electro-magnet core chamber, electro-magnet core chamber left side wall is fixed and is equipped with electromagnet core, electromagnet core right-hand member is equipped with the promotion head that can the horizontal slip, promote first right-hand member with the mutual butt of power switching board left end face, power switching board left end face with the fixed power switching spring that is equipped with between the chamber left side wall that is equipped with between the electro-magnet core chamber left side wall, promote first left end face with fixed.

5. An injection molding machine capable of controlling material access as claimed in claim 1, wherein: the piston is characterized in that the outer circular surface of the crankshaft is hinged to a connecting rod extending to the inner portion of the piston cavity, the right end of the connecting rod is hinged to the left end face of the piston, an upper end of the feeding cavity is communicated with an oil outlet pipe between the piston cavities, a hydraulic oil cavity is communicated with an oil inlet pipe between the piston cavities, the hydraulic oil cavity is communicated with the feeding cavity and provided with an oil return pipe, an oil return valve is fixedly arranged inside the oil return pipe, and an oil outlet pipe and a sealing one-way valve are fixedly arranged inside the oil inlet pipe inside the sealing plate.

6. An injection molding machine capable of controlling material access as claimed in claim 1, wherein: with the corresponding position in screw rod chamber the inside fixed material returned motor that is equipped with of drawing of patterns support, with the corresponding position in screw rod chamber the intercommunication is equipped with the material returned diaphragm orifice about the material returned diaphragm orifice, screw rod chamber left end is rotated and is equipped with and passes material returned diaphragm orifice and with the screw rod that material returned motor power is connected, the screw rod with screw rod intracavity wall face screw-thread fit, material returned diaphragm orifice right-hand member face with it overlaps to be fixed to be equipped with between the movable mould board left end face the material returned spring in the material returned pole outside, drawing of patterns support right-hand member face longitudinal symmetry just is fixed to be equipped with the material returned fore-set.

7. An injection molding machine capable of controlling material access as claimed in claim 1, wherein: the feeding sealing door is characterized in that a feeding sealing door spring is fixedly arranged between the right wall surface of the feeding sealing door cavity and the right end surface of the feeding sealing door, a melting sealing door spring is fixedly arranged between the left end surface of the melting sealing door and the left wall surface of the melting sealing door, and a pull rope is fixedly arranged between the left end surface of the melting sealing door and the left end surface of the feeding sealing door.