CN107672117A - Injection machine and former - Google Patents

Abstract

The invention provides an injection molding machine and molding equipment to solve the technical problem that the low injection speed of the existing injection molding machine leads to low precision and qualified rate of injection molding products. The injection molding machine includes a feeding mechanism and an injection mechanism; the feeding mechanism includes a first driving member and a feeding assembly connected with the first driving member, and the injection mechanism includes a second driving member and a feeding assembly connected with the second driving member The injection assembly; wherein, the feeding assembly is connected with the injection assembly, the first driving member is used to drive the feeding assembly to deliver materials to the injection assembly, and the second driving member is used to drive the injection The component injects material into the cavity of the forming mold.

Description

Injection molding machine and molding equipment

technical field

The invention relates to the technical field of molding, in particular to an injection molding machine and molding equipment.

Background technique

Injection molding machine, also known as injection machine, is a molding equipment that uses plastic molding molds to make thermoplastic or thermosetting plastics into plastic products of various shapes. During the operation of the injection molding machine, the plastic material can be heated to convert it into a molten state and then injected into the mold cavity for molding. The development of modern electronics industry requires injection molding products to be more integrated, precise and miniaturized. This development trend requires injection molding machines to be more high-speed and precise when injecting molten plastic materials to meet the development needs of injection molding products.

In the prior art, an injection molding machine generally includes a storage barrel, a power part, a screw and a driving part, wherein the screw is arranged in the storage barrel, the screw and the storage barrel are arranged coaxially, and the screw can move axially while rotating. Specifically, the power shaft of the power part is arranged coaxially with the screw, the power part is used to drive the screw to rotate along its central axis, the drive part is drivingly connected to the power part, and the drive part is used to drive the power part to move along the axial direction of its shaft, Furthermore, driven by the driving member, the power member and the screw rod move synchronously along the axial direction of the screw rod, so that the screw rod can simultaneously rotate in the circumferential direction and move in the axial direction. The screw transforms the plastic material from the initial state into a molten state through friction, extrusion, shearing, etc. At the same time, the screw drives the material in the storage barrel to move along the axial direction of the screw. When the material reaches the injection port of the storage barrel, the screw Drive the plastic material to inject into the cavity of the mold from the injection port.

The above existing technology has the following technical defects: the screw rotates and moves axially at the same time, which is used to drive the material to be transported along its axial direction, and is also used to drive the material to be injected from the injection port of the storage cylinder, and the power part drives the screw to rotate , the driving part pushes the screw to move rapidly along its axial direction. Therefore, the kinetic energy required for the driving part to push the screw to run is relatively large. The injection speed of the material depends on the moving speed of the power part along its axial direction. Since the driving part pushes the screw to move forward At the same time, it is necessary to drive the power part to move forward at the same time. Affected by this structure, the axial movement acceleration of the screw is not fast enough, the injection speed is low, the material cannot be injected at high speed and precision, and the precision of the injection molded product formed by the mold is low. , The pass rate of the product is low.

Contents of the invention

The object of the present invention is to provide an injection molding machine to solve the technical problem that the low injection speed of the existing injection molding machine leads to low precision and qualified rate of injection molded products.

An injection molding machine provided by the present invention includes a feeding mechanism and an injection mechanism;

The feeding mechanism includes a first driving member and a feeding assembly connected to the first driving member, and the injection mechanism includes a second driving member and an injection assembly connected to the second driving member; wherein,

The feeding assembly is connected to the injection assembly, the first driving member is used to drive the feeding assembly to deliver materials to the injection assembly, and the second driving member is used to drive the injection assembly to the molding mold. The material is injected into the cavity.

As a further improvement of the above technical solution, the feeding assembly includes a barrel and a feeding screw inserted into the barrel and capable of rotating relative to the barrel, and the barrel is connected to the injection assembly;

The first driving member is connected with the feeding screw and can drive the feeding screw to rotate relative to the barrel so that the material in the barrel is conveyed to the injection assembly along the axial direction of the barrel.

As a further improvement of the above technical solution, the injection assembly includes a syringe and an injection core inserted into the syringe and capable of moving along the axial direction of the syringe, and a Gap 1 between them, the feeding assembly communicates with Gap 1, and materials can pass through Gap 1 to reach the region of the injection barrel located at the front end of the injection core;

The second driving member is connected to the injection core and can drive the injection core to move along the axial direction of the injection cylinder so that the material in the injection cylinder at the front end of the injection core is injected into the cavity of the molding mold .

As a further improvement of the above technical solution, the injection core includes a core shooter and a non-return ring. connection;

The non-return ring is sleeved between the core shooter and the injection barrel, and the non-return ring can move along the axial direction of the core shooter to block or communicate the gap with the jet groove .

As a further improvement of the above technical solution, the anti-reverse ring has a conducting position and a blocking position, and the non-reverse ring can move between the conducting position and the blocking position;

When the material reaches the gap 1, under the pressure of the material, the non-return ring moves from the blocking position to the conducting position so that the gap 1 communicates with the jet groove;

When the second driving member drives the core shooter to move backwards and forwards, the anti-return ring moves from the conduction position to the blocking position so that the gap one is blocked from the jet groove.

As a further improvement of the above technical solution, the core shooter includes a core body, a shoot tip and a stopper; wherein,

The shooting tip is connected to the front end of the core body, the second driving member is connected to the rear end of the core body, and the jet groove is arranged on the shooting tip;

The stopper is fixedly socketed with the core body and there is a gap 2 between the stopper and the injection barrel, and the gap 1 communicates with the gap 2;

The non-return ring is sleeved between the injection tip and the injection barrel, and the non-return ring can approach or move away from the stopper along the axial direction of the injection tip so that the gap and the The jet grooves are blocked or communicated through the gap two.

As a further improvement of the above technical solution, the injection assembly further includes a sealing member sleeved between the injection core and the injection barrel, and an arc-shaped material channel is arranged on the sealing member;

The first end of the arc-shaped channel is connected to the feeding assembly, and the second end of the arc-shaped channel communicates with the first gap.

As a further improvement of the above technical solution, the injection assembly further includes a material receiving port that penetrates the wall of the injection cylinder in the radial direction of the injection cylinder, and the first end of the arc channel passes through the material receiving port. The mouth is connected with the feeding assembly;

The material inlet, the arc channel and the gap are sequentially connected to form an integral arc channel.

As a further improvement of the above technical solution, it also includes a material receiving part connected between the feeding assembly and the injection assembly;

The feeding assembly includes a feeding port, the injection assembly includes a material receiving port, and the material receiving member has a material receiving channel, and the feeding port and the first port of the material receiving channel are snapped together by spherical contact. The material receiving port is clamped with the second port of the material receiving channel.

The injection molding machine provided by the present invention includes a feeding mechanism and an injection mechanism, the feeding mechanism includes a first driving member and a feeding assembly connected with the first driving member, and the injection mechanism includes a second driving member and an injection assembly connected with the second driving member; wherein , the feeding assembly is connected with the injection assembly, the first driving member is used to drive the feeding assembly to deliver materials to the injection assembly, and the second driving member is used to drive the injection assembly to inject materials into the cavity of the molding mold. When in use, the feeding assembly is only used to deliver materials to the injection assembly, the injection assembly is only used to inject materials into the cavity of the molding mold, the first driving part is only used to drive the feeding assembly to convey materials, and the second driving part is only used Because the injection component is driven to inject the material, the work of the first drive part and the second drive part does not interfere with each other. The material delivery and material injection process of the entire injection molding machine are completed by different components. In this way, the material delivery process and the material injection process are independent. The required kinetic energy is small, but the driving power is large. The parameters in the material conveying process and material injection process will not limit each other. By setting the driving parameters of the first driving part and the second driving part differently, the material can be realized. The maximization of the transmission power and the maximization of the material injection power, the material can be injected at high speed and precision, the material conveying speed and the material injection speed match the requirements of the current injection molding products, and the precision and integration of the injection molding products formed by the mold are high.

Another object of the present invention is to provide a molding device, which includes a molding mold and an injection molding machine as described above;

The injection assembly of the injection molding machine is connected with the cavity of the molding mold.

Compared with the prior art, the beneficial effect of the above-mentioned molding equipment is the same as that of the above-mentioned injection molding machine compared with the prior art, and will not be repeated here.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Fig. 1 is the first schematic diagram of the injection molding machine provided by the embodiment of the present invention;

Fig. 2 is the second schematic diagram of the injection molding machine provided by the embodiment of the present invention;

Fig. 3 is a partial sectional view of the injection molding machine provided by the embodiment of the present invention;

4 is a schematic diagram of an injection assembly provided by an embodiment of the present invention;

Fig. 5 is a schematic diagram of a core shooter provided by an embodiment of the present invention.

Reference signs:

1-feeding mechanism; 2-injection mechanism; 3-receiving part; 11-first driving part; 12-feeding assembly; 21-second driving part; 22-injection assembly; ;122-feeding screw; 123-feeding port; 221-injection cylinder; 222-injection core; 223-gap one; 224-gap two; Reverse ring; 2223- jet groove; 2224- core body; 2225- shoot tip; 2226- limiter; 2227- seal;

detailed description

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

FIG. 1 is a first schematic diagram of an injection molding machine provided by an embodiment of the present invention, and FIG. 2 is a second schematic diagram of an injection molding machine provided by an embodiment of the present invention. Referring to Fig. 1 and Fig. 2, an injection molding machine provided by an embodiment of the present invention includes a feeding mechanism 1 and an injection mechanism 2; The feeding assembly 12, the injection mechanism 2 includes a second driver 21 and an injection assembly 22 connected with the second driving member 21; wherein, the feeding assembly 12 is connected with the injection assembly 22, and the first driving member 11 is used to drive the feeding assembly 12 to inject The component 22 transports the material, and the second driving member 21 is used to drive the injection component 22 to inject the material into the cavity of the molding mold.

When in use, the feeding assembly is only used to deliver materials to the injection assembly, the injection assembly is only used to inject materials into the cavity of the molding mold, the first driving part is only used to drive the feeding assembly to convey materials, and the second driving part is only used Because the injection component is driven to inject the material, the work of the first drive part and the second drive part does not interfere with each other. The material delivery and material injection process of the entire injection molding machine are completed by different components. In this way, the material delivery process and the material injection process are independent. The required kinetic energy is small, but the driving power is large. The parameters in the material conveying process and material injection process will not limit each other. By setting the driving parameters of the first driving part and the second driving part differently, the material can be realized. The maximization of the transmission power and the maximization of the material injection power, the material can be injected at high speed and precision, the material conveying speed and the material injection speed match the requirements of the current injection molding products, and the precision and integration of the injection molding products formed by the mold are high.

Fig. 3 is a partial cross-sectional view of the injection molding machine provided by the embodiment of the present invention. Referring to Fig. 3, as a further improvement of the above-mentioned technical solution, the feeding assembly 12 includes a barrel 121 and is plugged with the barrel 121 and can be inserted relative to the barrel 121 The rotating feeding screw 122, the barrel 121 is connected with the injection assembly 22; the first driver 11 is connected with the feeding screw 122 and can drive the feeding screw 122 to rotate relative to the barrel 121 so that the material in the barrel 121 moves along the direction of the barrel 121. Axially delivered to the injection assembly 22 .

Wherein, the first end of the above-mentioned material barrel 121 is connected with the hopper, and the second end of the above-mentioned material cylinder 121 is provided with a feeding port 123, and the material moves from the first end of the material cylinder 121 to the second end. Preferably, the above-mentioned first driving member 11 is a driving motor, and the motor shaft of the driving motor is coaxially arranged with the feeding screw 122. After the driving motor is started, the motor shaft drives the feeding screw 122 to rotate along its central axis. Rotating, the feeding screw 122 continuously drives the feeding screw 122 and the material inside the barrel wall of the barrel 121 to move along the axial direction of the barrel 121 from the first end to the second end of the barrel.

During the material conveying process, on the one hand, the plastic raw material absorbs heat energy from the barrel wall, on the other hand, during the rotation of the feeding screw, it provides heat energy to the material through shearing, extrusion, friction, etc., and the plastic raw material melts to form a flowable The molten plastic is driven by the feeding screw, and the molten plastic raw material continuously moves from the first end of the barrel to the second end to the feeding port.

Compared with the prior art, the above-mentioned entire feeding mechanism includes a driving motor, which is coaxially arranged with the feeding screw. When in use, only the motor shaft of the driving motor needs to rotate to drive the feeding screw to rotate, and the driving motor itself does not need to move , The number of parts inside the feeding mechanism is reduced, the structure inside the feeding mechanism is simplified and lighter, and the required kinetic energy is reduced while the driving power is increased. The increase in material delivery power increases the output and quality of injection molding products at the same time.

Fig. 4 is a schematic diagram of an injection assembly provided by an embodiment of the present invention, and Fig. 5 is a schematic diagram of a core shooter provided by an embodiment of the present invention. Referring to Figs. The injection core 222 which is connected and can move along the axial direction of the injection cylinder 221, and the gap one 223 arranged between the injection core 222 and the injection cylinder 221, the feeding assembly 12 communicates with the gap one 223, and the material can reach the injection through the gap one 223 The area at the front end of the injection core 222 in the cylinder 221; the second driving member 21 is connected with the injection core 222 and can drive the injection core 222 to move along the axial direction of the injection cylinder 221 so that the material in the injection cylinder 221 at the front end of the injection core 222 is formed Injection into the cavity of the mold.

The above-mentioned injection molding machine also includes a body, wherein the injection assembly 22 and the feeding assembly 12 are both arranged on the body, wherein the first driver 11 and the second driver 21 are respectively arranged on two sides of the body to ensure that the injection molding machine as a whole Keep balance to ensure that the center of gravity of the entire injection molding machine is at the center of the body.

Wherein, the second driving part is fixed on the body, and the ball screw drives the injection core to move relative to the injection barrel. Specifically, the second driving part is connected with the ball screw through a timing belt or directly, and the load nut of the ball screw It is connected with the pressure detection device, and the pressure detection device is connected with the rear end of the injection core, wherein the pressure detection device includes a pressure plate and a pressure plate seat connected with the pressure plate, wherein the pressure plate is connected with the load nut, and the pressure plate seat is connected with the injection core. The core is connected, and the torque output by the second driving member is transformed into the linear motion of the injection core through the lead screw and the load nut, pushing the injection core forward for injection or backward for ejection.

The above-mentioned injection molding machine also includes a material receiving part 3 connected between the feeding assembly 12 and the injection assembly 22; Material opening 225, the material receiving port 225 is arranged on the cylinder wall of the injection cylinder 221, the material receiving port 225 penetrates the cylinder wall of the injection cylinder 221 along the radial direction of the injection cylinder 221, and the material receiving port 225 is located in the middle of the injection cylinder 221 area, the material receiving part 3 has a material receiving channel 31 , the feeding port 123 is engaged with the first port of the material receiving channel 31 through spherical contact, and the material receiving port 225 is clamped with the second port of the material receiving channel 31 .

Specifically, the feeding port and the first port of the material receiving channel are snapped together through spherical contact, so that the matching angle between the feeding port and the material receiving channel can be adjusted according to actual needs. In other words, the feeding component and the injection component can pass through The spherical contact method adjusts the mutual matching angle, so that the use flexibility of the injection molding machine is improved. The material receiving port is clamped with the second port of the material receiving channel. On the basis of the clamping connection, the above material receiving part can be pressed on the outside of the cylinder wall of the injection cylinder through the pressing component. The clamping form can facilitate the material receiving part. Installation, disassembly, repair and maintenance with the syringe.

As a further improvement of the above technical solution, the injection core 222 includes a core shooter 2221 and a check ring 2222. The front end of the shoot core 2221 is provided with a jet groove 2223 extending along its axial direction. Connection; the non-return ring 2222 is sleeved between the core shooter 2221 and the injection barrel 221 and the non-return ring 2222 can move along the axial direction of the core shooter 2221 to block or communicate with the gap 1 223 and the jet groove 2223 . Among them, the check ring has a conduction position and a blocking position, and the check ring can move between the conduction position and the blocking position; when the material reaches gap 1, under the pressure of the material, the check ring moves from the blocking position Move to the conduction position to make the gap one conduct with the jet groove; when the second driving member drives the core shooter to move from back to front, the non-return ring moves from the conduction position to the blocking position so that the gap one is blocked from the jet groove .

The shooting core includes a core body 2224, a shooting tip 2225 and a stopper 2226; wherein, the shooting tip 2225 is connected to the front end of the core body 2224, the second driving member 21 is connected to the rear end of the core body 2224, and the jet groove 2223 is arranged at the shooting tip On 2225; the stopper 2226 is fixedly socketed with the core 2224 and there is a gap 224 between the stopper 2226 and the injection cylinder 221, and the gap 223 communicates with the gap 224; Between the syringe 221 and the non-return ring 2222 can approach or move away from the stopper 2226 along the axial direction of the injection tip 2225 so that the first gap 223 and the jet groove 2223 can be blocked or communicated through the second gap 224 .

Among them, the material feeding port 123 of the barrel 121, the material receiving channel 31 of the material receiving part 3, the material receiving port 225 of the injection cylinder 221, the gap 223 between the injection cylinder 221 and the injection core 222, the stopper 2226 and the injection cylinder The gap two 224 between 221 is connected in turn, and the material passes through the feeding port 123 of the barrel 121, the material receiving channel 31 of the material receiving part 3, the material receiving port 225 of the injection cylinder 221, and the gap between the injection cylinder 221 and the injection core 222. The first gap 223 reaches the second gap 224 between the stopper 2226 and the injection cylinder 221, and the molten plastic raw material is continuously fed into the injection cylinder to form a certain pressure.

When the material reaches the gap 2 between the limiter and the injection barrel, under the pressure of the material, the anti-reverse ring moves from the blocking position to the conducting position so that the gap 2 is connected to the jet groove. At this time, the material passes through the gap 2. Arriving in the diversion groove, the material reaches the front end of the injection core through the diversion groove. At this time, the material continues to accumulate at the front end of the injection core, and the material pushes the injection core to move backward. When the injection core moves to the set value, the discharge is completed. Material metering; after the material storage is completed, start the second driving part to drive the core shooter to move from back to front. During this process, the injection core moves forward. Move to the blocking position so that the gap one is blocked from the jet groove, the non-reverse ring blocks and seals the material entry channel, the injection core pushes the non-reverse ring to continue to move forward, and pushes the molten plastic material to move forward, and the plastic material passes through The injection port flows into the locked mold cavity to form and take out the product after cooling, and the injection molded product is completed.

Further, when the material reaches the gap 2 between the stopper and the injection barrel, under the pressure of the material, the non-return ring moves away from the stopper along the axial direction of the injection tip so that the gap 1 communicates with the jet groove through the gap 2 , at this time, the material reaches the diversion groove through gap 2, and the material reaches the front end of the injection tip through the diversion groove. At this time, the material continues to accumulate at the front end of the injection tip, and the material pushes the injection core to move backward. When the set value is reached, the discharge metering is completed; after the storage is completed, the second driving part is started to drive the shooting core to move from back to front. During this process, the injection core moves forward, in other words, it is equivalent to the backward movement of the non-return ring , the non-return ring is close to the stopper along the axial direction of the injection tip so that the gap one and the jet groove pass through the gap two. Push the molten plastic raw material to move forward, the plastic raw material flows into the locked mold cavity through the injection port to form and take out the product after cooling, and the injection molded product is completed.

In this embodiment, the path through which the material enters the front end of the injection core is sealed by the non-return ring to prevent the plastic material from leaking along the original entry channel. When the material is injected, the metering of the material can be made more accurate, and the leakage of the material can prevent the equipment from polluting the equipment. .

In addition, when the plastic raw materials are accumulated, the material continues to accumulate from front to back along the axial direction of the injection cylinder. When the injection core pushes the material to be injected, the material that enters the injection cylinder first is injected first, and the material that enters the injection cylinder last is injected, realizing first-in-first-out , There is no dead angle, to ensure that the material will not degrade or decompose during injection, causing discoloration and other adverse phenomena.

As a further improvement of the above technical solution, the injection assembly 22 also includes a seal 2227 sleeved between the injection core 222 and the injection cylinder 221, and the seal 2227 is provided with an arc-shaped material channel 2228; the first arc-shaped material channel 2228 The end is connected with the feeding assembly 12, and the second end of the arc channel 2228 communicates with the first gap 223. The setting of the arc-shaped material channel can make the material reach the gap one smoothly from the material inlet. The arc-shaped material channel itself has no corners or dead angles, and the material will not accumulate in the arc-shaped material channel, which reduces the waste of materials and improves the efficiency of material operation. openness.

As a further improvement of the above technical solution, the first end of the arc-shaped material channel is connected to the feeding assembly through the material connection port, and the material connection port, the arc-shaped material channel and the gap are sequentially connected to form an integral arc-shaped channel.

The material inlet, arc-shaped material channel and gap one of the injection cylinder are connected in sequence to form an integral arc-shaped channel, which can further make the material reach the gap one smoothly from the material-connecting port. It will accumulate in the curved path, reduce the waste of materials, and further improve the smoothness of material movement.

Another object of the embodiments of the present invention is to provide a molding device, which includes a molding mold and the above injection molding machine, and the injection component of the injection molding machine is connected with the cavity of the molding mold.

Compared with the prior art, the beneficial effect of the above-mentioned molding equipment is the same as that of the above-mentioned injection molding machine compared with the prior art, and will not be repeated here.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (10)

1. An injection molding machine, characterized in that, comprises a feeding mechanism and an injection mechanism; The feeding mechanism includes a first driving member and a feeding assembly connected to the first driving member, and the injection mechanism includes a second driving member and an injection assembly connected to the second driving member; wherein, The feeding assembly is connected to the injection assembly, the first driving member is used to drive the feeding assembly to deliver materials to the injection assembly, and the second driving member is used to drive the injection assembly to the molding mold. The material is injected into the cavity. 2. The injection molding machine according to claim 1, wherein the feeding assembly includes a barrel and a feeding screw that is plugged into the barrel and can rotate relative to the barrel, and the barrel is connected to the barrel The connection of the above-mentioned injection components; The first driving member is connected with the feeding screw and can drive the feeding screw to rotate relative to the barrel so that the material in the barrel is conveyed to the injection assembly along the axial direction of the barrel. 3. The injection molding machine according to claim 1, wherein the injection assembly includes an injection cylinder and an injection core that is plugged into the injection cylinder and can move along the axial direction of the injection cylinder, and is arranged on the injection cylinder. A gap between the injection core and the injection barrel, the feeding assembly communicates with the gap, and the material can pass through the gap to reach the area of the injection barrel at the front end of the injection core; The second driving member is connected to the injection core and can drive the injection core to move along the axial direction of the injection cylinder so that the material in the injection cylinder at the front end of the injection core is injected into the cavity of the molding mold . 4. The injection molding machine according to claim 3, wherein the injection core includes a core shooter and a non-return ring, the front end of the core shooter is provided with a jet groove extending axially, and the core shooter The rear end is connected to the second driving member; The non-return ring is sleeved between the core shooter and the injection barrel, and the non-return ring can move along the axial direction of the core shooter to block or communicate the gap with the jet groove . 5. The injection molding machine according to claim 4, wherein the non-return ring has a conducting position and a blocking position, and the non-return ring can move between the conducting position and the blocking position; When the material reaches the gap 1, under the pressure of the material, the non-return ring moves from the blocking position to the conducting position so that the gap 1 communicates with the jet groove; When the second driving member drives the core shooter to move backwards and forwards, the anti-return ring moves from the conduction position to the blocking position so that the gap one is blocked from the jet groove. 6. The injection molding machine according to claim 4, wherein the core shooter comprises a core body, a shoot tip and a stopper; wherein, The shooting tip is connected to the front end of the core body, the second driving member is connected to the rear end of the core body, and the jet groove is arranged on the shooting tip; The stopper is fixedly socketed with the core body and there is a gap 2 between the stopper and the injection barrel, and the gap 1 communicates with the gap 2; The non-return ring is sleeved between the injection tip and the injection barrel, and the non-return ring can approach or move away from the stopper along the axial direction of the injection tip so that the gap and the The jet grooves are blocked or communicated through the gap two. 7. The injection molding machine according to claim 3, characterized in that, the injection assembly further comprises a sealing member sleeved between the injection core and the injection cylinder, and the sealing member is provided with an arc material road; The first end of the arc-shaped channel is connected to the feeding assembly, and the second end of the arc-shaped channel communicates with the first gap. 8. The injection molding machine according to claim 7, wherein the injection assembly further comprises a material inlet that penetrates the wall of the injection cylinder in the radial direction of the injection cylinder, and the arc-shaped material channel The first end is connected to the feeding assembly through the material inlet; The material inlet, the arc channel and the gap are sequentially connected to form an integral arc channel. 9. The injection molding machine according to claim 1, further comprising a material receiving member connected between the feeding assembly and the injection assembly; The feeding assembly includes a feeding port, the injection assembly includes a material receiving port, the material receiving member has a material receiving channel, and the feeding port and the first port of the material receiving channel are snapped together by spherical contact. The material receiving port is clamped with the second port of the material receiving channel. 10. A molding device, comprising a molding die, characterized in that it comprises the injection molding machine according to any one of claims 1-9; The injection assembly of the injection molding machine is connected with the cavity of the molding mold.