CN114407288A - Multi-station temperature control injection molding machine - Google Patents

Abstract

The invention belongs to the field of injection molding, in particular to a multi-station temperature control injection molding machine. Compression feeding, so that after the mold is filled with raw materials, there is no need to continue to carry out pressure-retaining feeding through the screw, and the screw does not need to wait until the raw material in the molding cavity is condensed before filling the next mold, which greatly improves the working efficiency of the injection molding machine. ; By setting eccentric stirring rollers, fan blades, and inclined feeding mouths, the fluidity of liquid raw materials in the molding cavity and injection channel is improved, and the increased fluidity can prevent insufficient filling, weld lines and air bubbles in the finished product. For the quality of the finished product, by setting the No. 2 heating layer, No. 3 heating layer and heat insulation board, while ensuring that the raw materials in the feeding tank and the injection molding channel do not solidify, it can also prevent excess heat from being conducted to the molding cavity, causing the molding raw materials to condense. too slow.

Description

A multi-station temperature-controlled injection molding machine

technical field

The invention belongs to the field of injection molding, in particular to a multi-station temperature-controlled injection molding machine.

Background technique

Injection molding machine is also known as injection molding machine or injection machine. The injection molding machine heats the plastic and applies high pressure to the molten plastic to make it shoot out and fill the mold cavity. Many factories are called beer machines, and the injection molding products are called beer parts. The main molding equipment for making various shapes of plastic products using plastic molding molds. According to the arrangement of injection devices and clamping devices, injection molding machines can be divided into vertical, horizontal and vertical-horizontal composite types. The working principle of the injection molding machine Similar to the syringe for injection, it uses the thrust of the screw (or plunger) to inject the plasticized plastic in the molten state (that is, the viscous state) into the closed mold cavity, and obtain the product after curing and shaping. process.

There is also a patent in the prior art about a multi-station temperature-controlled injection molding machine, such as a multi-station temperature-controlled injection molding machine with application number 201910192118.1, including a controller, a base, an injection nozzle, a fixed unit, a rotating platform, a motor, a forming mold and a temperature control unit; a telescopic rod is fixedly connected to the top of the column set on the rotating platform; the end of the telescopic rod is fixedly connected to an injection nozzle; the forming mold includes a fixed mold and a movable mold; the fixed mold The mold is provided with a main channel for injection injection by the injection nozzle; a sealing valve is arranged at the entrance of the main channel; at least three sets of fixed units are arranged on the upper circumference of the rotating platform, and the rotation of the rotating platform is driven by a motor; the movable mold It is arranged on the fixed unit; the fixed die is provided with a diameter-reducing module; the diameter-reducing module includes an arc-shaped shrapnel, an electric push rod, an arc-shaped support plate and an auxiliary pushing unit; The diameter module can reduce the diameter of the main channel, so as to avoid blockage of the main channel and facilitate cleaning after the blockage.

However, the above-mentioned device has the following disadvantages: in the existing equipment, it is necessary to maintain pressure and feed the mold through the screw, so that the injection nozzle needs to wait for the current mold to be condensed before filling the next mold, resulting in the work of the injection molding machine. The efficiency is low, which greatly increases the production time. In the mass production process, continuous injection molding cannot be achieved, and the production efficiency is low, which is not conducive to increasing the output and reducing the cost.

In view of this, the present invention solves the above technical problems by proposing a multi-station temperature-controlled injection molding machine.

SUMMARY OF THE INVENTION

In order to make up for the deficiencies of the existing technology, the existing multi-station temperature-controlled injection molding machine needs to use the screw to maintain pressure and feed the mold, so that the injection nozzle needs to wait for the current mold to be condensed before filling the next mold. The situation that leads to the low working efficiency of the injection molding machine.

The technical scheme adopted by the present invention to solve the technical problem is as follows: a multi-station temperature-controlled injection molding machine, comprising an injection molding mechanism, a frame, a mold installation mechanism, a fixed mold and a movable mold; the frame includes a mounting frame, a base and a a connection frame, the installation frame is fixedly connected to the top of the base through the connection frame; the injection molding motor is installed on the upper surface of the installation frame, and the injection molding machine head is installed on the lower surface of the installation frame; the injection molding motor relies on the rotating shaft passing through the installation frame It is connected with the screw in the injection molding machine head, the hopper is installed on the upper surface of the mounting frame, and is communicated with the interior of the injection molding machine head through the feeding pipe running through the installation frame, and the inner surface of the injection molding machine head is provided with a heating layer No. 1; The mechanism includes a rotating plate, a mounting seat, a No. 1 telescopic rod and a fixing frame, the rotating plate is rotatably mounted on the upper surface of the base, and a group of No. 1 telescopic rods are evenly arranged on the surface of the rotating plate around the central axis of the rotating plate, The end of the telescopic rod is fixed with a mounting seat, the top of the mounting seat is fixed with a movable mold, a cooling device is arranged in the movable mold, the movable mold is matched with the upper fixed mold, and the fixed mold rotates through the fixed frame The plates are fixedly connected. The fixed mold is divided into a fixed part and a mounting part. The fixed part cooperates with the movable mold to form a molding cavity. The fixed part is provided with an injection channel. The upper opening of the injection molding channel corresponds to the position of the injection molding machine head. The position of the injection molding channel close to the upper surface of the fixed mold is provided with a hydraulic control one-way valve. The inner surface of the injection channel close to the movable mold is tapered. The outer side is provided with No. 2 heating layer; the mounting piece is installed on one side of the injection channel in the fixing piece, the mounting piece is provided with a cylindrical feeding groove, and the outer side of the feeding groove is provided with No. 3 heating layer, the There is a push plate in the feeding groove, the push plate is sealed and slidingly connected with the inner surface of the feeding groove, the push plate is connected with the rotating motor outside the mounting part through the No. 2 telescopic rod, and the feeding groove is set on the fixed The filling opening in the piece is connected with the injection channel, and the filling opening is located between the hydraulic control check valve and the lower surface of the fixed mold.

When working, the installation of each mechanism of the injection molding machine is completed, the rotating plate is rotated to align the injection molding machine head with the injection pipe of the fixed mold, the injection molding motor is turned on, the screw in the injection molding machine head starts to rotate, the No. 1 heating layer in the injection molding machine head is energized, and the The internal heating is carried out, and the injection molding material is poured into the hopper at the same time. Under the action of the screw and the No. 1 heating layer, the material begins to melt and is pushed to fill the entire injection molding machine head. When the raw material in the head melts and reaches the specified temperature, the screw rotates to apply pressure, the raw material enters the molding cavity through the hydraulic control check valve along the injection channel, and part of the raw material enters the feeding groove through the feeding port. At this time, the No. 2 telescopic rod expands and contracts. When the cavity is filled with raw materials, the pressure in the cavity increases, and when the pressure in the cavity reaches the set value, the screw releases the pressure, the rotating plate rotates, and is ready to fill the next cavity; because there is a hydraulic control check valve When the screw releases the pressure, the raw material in the mold is blocked in the mold by the hydraulic control one-way valve, and the pressure in the mold remains unchanged. Relying on the cooling device in the movable mold, the raw material in the molding cavity is gradually cooled, and the No. 2 telescopic The rod pushes the push plate, so that the raw material in the feeding groove is pressed into the molding cavity, so as to ensure that when the cooling volume of the raw material is reduced, the pressure in the molding cavity does not change, and the function of feeding and maintaining pressure is achieved. The heating layer and the No. 3 heating layer on the outside of the feeding tank heat the internal raw materials to prevent the raw materials in the injection molding channel and the feeding tank from condensing and blocking the injection molding channel. The plastic is separated from the molten raw material above. When the plastic inside the molding cavity is cooled and formed, the No. 2 telescopic rod drives the push plate to retract to restore the pressure to the normal level, and the No. 1 telescopic rod moves downward to separate the fixed mold from the movable mold. , Take out the molded plastic, the No. 1 telescopic rod returns to its original position again, and waits for the next charging operation. The feeding groove and the push rod replace the screw to carry out pressure maintenance and feeding, so that the screw does not have to wait until the raw materials in the mold are cooled before reducing the pressure to The filling of the next mold greatly shortens the injection molding time and improves the working efficiency of the injection molding machine; the fixed mold is divided into mounting parts and fixed parts. When necessary, the mounting parts can be removed to facilitate the installation, maintenance and replacement of the internal parts of the mounting parts. , to increase the service life of the mold; the No. 1 heating layer, the No. 2 heating layer and the No. 3 heating layer in this equipment are all heated by resistance wires, and the cooling device is a commonly used cooling device for the prior art mold.

Preferably, a heat insulation layer is installed in the fixing member, and the heat insulation layer is placed horizontally and located between the installation member and the molding cavity.

When working, the heat insulation layer installed in the fixing part is located between the installation part and the molding cavity, which prevents the heat of the installation part and the No. 2 heating layer and the No. 3 heating layer from being conducted to the molding cavity, resulting in slow condensation of the plastic in the molding cavity. It affects the efficiency and quality of the injection molding work. At the same time, the thermal insulation layer also ensures that the heat dissipation of the molten raw materials in the injection molding channel and the feeding tank above the thermal insulation layer is slowed down, preventing the raw materials from condensing and blocking the pipeline in the injection molding channel and the feeding tank, which affects the work. , it can also lock the heat of No. 2 heating layer and No. 3 heating layer to improve thermal efficiency and thermal utilization.

Preferably, an agitating roller is eccentrically provided on one side of the push plate close to the injection pipe, the agitating roller is a cone, and the large end of the agitating roller is connected to the push plate.

When working, the rotating motor drives the telescopic rod and the push plate to rotate. There is an agitating roller eccentrically located on the side of the push plate close to the injection pipe. The agitating roller and the push plate are fixedly connected. When the push plate rotates, the agitating roller moves eccentrically to stir the inside. Melting the plastic increases the fluidity of the plastic liquid, and the enhanced fluidity of the raw materials can prevent insufficient filling, weld lines and air bubbles in the finished product. The stirring roller is set to be tapered, and the big end is connected with the push plate. When rotating, it will provide a force in the direction of the feeding mouth to the internal raw material, which can make the molten raw material tend to move out of the feeding groove when it is stirred. When the molding cavity needs to be fed, the raw materials in the feeding groove can be quickly fed, and the forming effect is improved; the maximum distance of the push plate movement will not cause the end of the stirring roller to collide with the inner wall of the feeding groove.

Preferably, a group of fan blades are evenly arranged on the outer surface of the stirring roller around the central axis of the stirring roller, the fan blades adjacent to the push plate extend toward the rotating plate, and the end of the extended portion is flush with the side wall of the push plate.

When working, the rotating motor drives the telescopic rod and the push plate to rotate, and drives the stirring roller to rotate eccentrically. The fan blades arranged on the stirring roller can increase the stirring effect, and the fan blades close to the push plate extend toward the rotating plate. The part is flush with the side wall of the push plate to prevent the raw materials close to the surface of the push plate from being agitated, resulting in part of the raw materials staying in the gap between the fan blades and the push plate in the feeding groove, and not being replaced with external raw materials. In addition, this part of the raw material has been in a molten state but has not been used. After a long time, the quality of the material will decline, and the doping into the finished product will affect the quality of the finished product.

Preferably, the side of the fan blade close to the push plate is a vertical plane, and the side away from the push plate is a curved surface.

When working, the vertical plane of the fan blade is close to the push plate, and there will be no force on the raw material in the direction of the push plate during rotation, and the liquid material will not be squeezed to the surface of the push plate, and the side of the fan blade away from the push plate is a curved surface. When rotating, it has a strong effect on the direction of the liquid raw material to the injection channel, further improving the feeding speed and ensuring the quality of the finished product.

Preferably, the end of the feeding mouth close to the side of the injection channel is inclined downward.

When working, the raw material pressed out of the feeding groove by the push plate enters the injection molding channel along the feeding port, and the end of the feeding port close to the side of the injection molding channel is inclined downward, and has a downward movement tendency, and drives the injection molding machine located in the injection molding channel. Raw materials, accelerate the feeding of raw materials into the molding cavity, reduce the loss of pressure during the feeding process, ensure that most of the pressure is transmitted to the molding cavity, and ensure the quality of the finished product.

The beneficial effects of the present invention are as follows:

1. A multi-station temperature-controlled injection molding machine according to the present invention, by setting a feeding groove and a hydraulically controlled one-way valve on the fixed die, the feeding groove and the hydraulically controlled one-way valve replace the screw to perform pressure-retaining feeding, After the mold is filled with raw materials, there is no need to continue to maintain pressure and feed through the screw, and the screw does not need to wait until the raw materials in the molding cavity are condensed before filling the next mold, which greatly improves the working efficiency of the injection molding machine. The mold is divided into mounting parts and fixed parts, which facilitates the replacement and maintenance of the parts in the feeding groove, and improves the service life of the fixed mold.

2. In the multi-station temperature-controlled injection molding machine of the present invention, by setting eccentric stirring rollers, fan blades, and inclined feeding ports, the fluidity of liquid raw materials in the molding cavity and the injection molding channel is improved, and the flow rate is increased. It can prevent insufficient filling, weld lines and bubbles in the finished product, and improve the quality of the finished product. By setting the No. 2 heating layer, No. 3 heating layer and heat insulation board, it can ensure that the raw materials in the feeding tank and the injection channel do not solidify. At the same time, it can also prevent excess heat from being conducted to the molding cavity, so that the molding material condenses too slowly.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is the perspective view of the present invention;

Fig. 2 is the front sectional view of the present invention;

Fig. 3 is the partial enlarged view of A place in Fig. 2;

Fig. 4 is a partial enlarged view at B in Fig. 3;

In the figure: injection mechanism 1, injection head 11, hopper 12, injection motor 13, rotating shaft 14, material conveying pipe 15, screw 16, No. 1 heating layer 17, frame 2, mounting frame 21, base 22, connecting frame 23 , mold installation mechanism 3, rotating plate 31, mounting seat 32, No. 1 telescopic rod 33, fixed frame 34, fixed mold 4, fixed part 41, installation part 42, injection channel 43, hydraulic control check valve 44, No. 2 heating layer 45, feeding groove 46, push plate 461, No. 2 telescopic rod 462, rotating motor 463, feeding mouth 464, stirring roller 465, fan blade 466, No. 3 heating layer 47, heat insulation layer 48, movable mold 5, Cooling device 51 , forming cavity 6 .

Detailed ways

In order to make it easy to understand the technical means, creation features, achieved goals and effects of the present invention, the present invention will be further described below with reference to the specific embodiments.

As shown in FIG. 1 to FIG. 4 , a multi-station temperature-controlled injection molding machine according to the present invention includes an injection molding mechanism 1, a frame 2, a mold installation mechanism 3, a fixed mold 4 and a movable mold 5; the rack 2 includes a mounting frame 21, a base 22 and a connecting frame 23, the mounting frame 21 is fixedly connected to the top of the base 22 through the connecting frame 23; the injection motor 13 is installed on the upper surface of the installation frame 21, and the injection molding machine head 11 is installed On the lower surface of the mounting frame 21; the injection motor 13 is connected with the screw 16 in the injection molding machine head 11 by means of the rotating shaft 14 passing through the mounting frame 21, the hopper 12 is mounted on the upper surface of the mounting frame 21, The feeding tube 15 is communicated with the inside of the injection molding machine head 11, and the inner surface of the injection molding machine head 11 is provided with a No. 1 heating layer 17; The rotating plate 31 is rotatably mounted on the upper surface of the base 22 , and a group of No. 1 telescopic rods 33 are evenly arranged on the upper surface of the rotating plate 31 around the central axis of the rotating plate 31 , and the end of the No. 1 telescopic rod 33 is fixed with a mounting seat. 32. A movable mold 5 is fixedly connected to the top of the mounting seat 32. A cooling device 51 is arranged in the movable mold 5. The movable mold 5 is matched with the upper fixed mold 4, and the fixed mold 4 is connected to the rotating plate through the fixed frame 34. 31 is fixed, the fixed mold 4 is divided into a fixed part 41 and a mounting part 42, the fixed part 41 cooperates with the movable mold 5 to form a molding cavity 6, the fixed part 41 is provided with an injection channel 43, and the injection channel 43 vertically penetrates the fixed mold 4, the upper opening of the injection channel 43 corresponds to the position of the injection molding machine head 11, the injection channel 43 is provided with a hydraulic control check valve 44 at the position close to the upper surface of the fixed mold 4, and the injection channel 43 The inner surface of the side close to the movable mold 5 is tapered, and the outer side of the injection channel 43 is provided with a second heating layer 45 ; A cylindrical feeding groove 46 is provided, the outer side of the feeding groove 46 is provided with a No. 3 heating layer 47, and a pushing plate 461 is arranged in the feeding groove 46, and the pushing plate 461 is sealed with the inner surface of the feeding groove 46 Sliding connection, the push plate 461 is connected with the rotating motor 463 on the outside of the mounting piece 42 through the No. 2 telescopic rod 462, and the shrinking groove 46 is connected with the injection channel 43 through the shrinking opening 464 provided in the fixing piece 41, so The feeding port 464 is located between the hydraulic control check valve 44 and the lower surface of the fixed mold 4 .

When working, the installation of each mechanism of the injection molding machine is completed, the rotating plate 31 is rotated to make the injection molding machine head 11 align with the injection pipe of the fixed mold 4, the injection molding motor 13 is turned on, the screw 16 in the injection molding machine head 11 starts to rotate, and the The No. 1 heating layer 17 is energized to heat the interior, and at the same time, the injection molding raw materials are poured into the hopper 12. Under the action of the screw 16 and the No. 1 heating layer 17, the raw materials begin to melt and are pushed to fill the entire injection molding machine head 11. At this time The fixed mold 4 and the movable mold 5 are in a matching state. When the raw material in the injection molding machine head 11 melts and reaches the specified temperature, the screw 16 rotates to apply pressure, and the raw material passes through the hydraulic control check valve 44 along the injection channel 43 and enters the molding cavity 6 , part of the raw material enters the feeding groove 46 through the feeding port 464. At this time, the telescopic rod 462 of No. 2 has the smallest expansion and contraction amount. When the molding cavity 6 is filled with raw materials, the pressure in the cavity increases. The screw 16 releases the pressure, the rotating plate 31 rotates, and is ready to fill the next molding cavity 6; because of the presence of the hydraulic control check valve 44, when the screw 16 releases the pressure, the raw material in the mold is blocked by the hydraulic control check valve 44. In the mold, the pressure in the mold remains unchanged, the raw material in the molding cavity 6 is gradually cooled by the cooling device 51 in the movable mold 5, and the No. 2 telescopic rod 462 pushes the push plate 461, so that the raw material in the feeding groove 46 is pressed Into the molding cavity 6, to ensure that when the cooling volume of the raw material is reduced, the pressure in the molding cavity 6 will remain unchanged, so as to achieve the effect of filling and maintaining pressure. The heating layer 47 heats the internal raw materials to prevent the raw materials in the injection channel 43 and the feeding groove 46 from condensing and blocking the injection channel 43. The diameter of the injection channel 43 close to the movable mold 5 is gradually reduced in a tapered shape, which is convenient for the condensed plastic to interact with the plastic. The melted raw material above is separated, and when the plastic inside the molding cavity 6 is cooled and formed, the No. 2 telescopic rod 462 drives the push plate 461 to retract, restoring the pressure to the normal level, and the No. 1 telescopic rod 33 moves downward to make the fixed mold 4 and the movable The mold 5 is separated, the molded plastic is taken out, the No. 1 telescopic rod 33 is returned to its position again, and the next filling operation is waited for, and the screw 16 is replaced by the feeding groove 46 and the push rod 461 to carry out pressure maintenance and compression, so that the screw 16 does not have to wait in the mold. After the raw material is cooled, the pressure is reduced to fill the next mold, which greatly shortens the injection molding time and improves the working efficiency of the injection molding machine; the fixed mold 4 is divided into a mounting part 42 and a fixing part 41. When necessary, the mounting part 42 can be removed. , to facilitate the installation, maintenance and replacement of the internal parts of the mounting part 42, and increase the service life of the mold. The No. 1 heating layer 17, the No. 2 heating layer 45 and the No. 3 heating layer 47 in this equipment are all resistance wire heating. Cooling devices are commonly used for prior art molds.

As an embodiment of the present invention, an insulating layer 48 is installed in the fixing member 41 , and the insulating layer 48 is placed horizontally and located between the installation member 42 and the molding cavity 6 .

During operation, the heat insulation layer 48 installed in the fixing member 41 is located between the installation member 42 and the molding cavity 6 to prevent the heat from the installation member 42 and the No. 2 heating layer 45 and the No. 3 heating layer 47 from being conducted to the forming cavity 6 when heated, As a result, the plastic in the molding cavity 6 condenses slowly, which affects the efficiency and quality of the injection molding work. At the same time, the heat insulating layer 48 also ensures that the heat dissipation of the molten raw material in the injection molding channel 43 and the feeding groove 46 above the heat insulating layer 48 is slowed down, preventing the raw material from being trapped in the mold. Condensation in the injection channel 43 and the feeding groove 46 blocks the pipeline, which affects the work, and can also lock the heat of the No. 2 heating layer 45 and the No. 3 heating layer 47 to improve thermal efficiency and heat utilization.

As an embodiment of the present invention, a stirring roller 465 is eccentrically provided on one side of the push plate 461 close to the injection pipe.

When working, the rotating motor 463 drives the telescopic rod and the push plate 461 to rotate. An agitating roller 465 is eccentrically located on the side of the push plate 461 close to the injection pipe. The agitating roller 465 is fixedly connected with the push plate 461. The roller 465 moves eccentrically to agitate the molten plastic inside, so that the fluidity of the plastic liquid increases, and the increased fluidity of the raw material can prevent the finished product from being insufficiently filled, weld lines and air bubbles, etc., and also make the molten liquid better from feeding. The groove 46 flows into the molding cavity 6, and at the same time, the stirring roller 465 is made into a conical shape, and the big end is connected with the push plate 461. When rotating, it will provide a force in the direction of the feeding mouth 464 to the raw material inside, which can melt the raw material. When being stirred, there is a tendency to move out of the feeding groove 46. When the forming cavity 6 needs to be fed, the raw material in the feeding groove 46 can be quickly fed and the forming effect is improved; The end of the stirring roller 465 collides with the inner wall of the feeding groove 46 .

As an embodiment of the present invention, a group of fan blades 466 are evenly arranged on the outer surface of the stirring roller 465 around the central axis of the stirring roller 465 , and the fan blades 466 adjacent to the push plate 461 extend toward the rotating plate 31 , and the extended part is The end is flush with the side wall of the push plate 461 .

During operation, the rotating motor 463 drives the telescopic rod and the push plate 461 to rotate, and drives the stirring roller 465 to rotate eccentrically. The fan blades 466 arranged on the stirring roller 465 can increase the stirring effect, and the fan blades 466 close to the push plate 461 move toward the rotating plate. Extending in the direction of 31, the end of the extension part is flush with the side wall of the push plate 461, preventing the raw material close to the surface of the push plate 461 from being agitated, and causing part of the raw material to stay in the feeding groove 46 between the fan blades and the push plate. The gap parts are not replaced and supplemented with external raw materials, resulting in this part of the raw materials being in a molten state but not being used.

As an embodiment of the present invention, the side of the fan blade 466 close to the push plate 461 is a vertical plane, and the side away from the push plate 461 is a curved surface.

When working, the vertical plane of the fan blade 466 is close to the push plate 461. When rotating, there will be no force on the raw material in the direction of the push plate 461. The liquid raw material will not be squeezed to the surface of the push plate 461, and the fan blade 466 is far away from the push plate 461. One side of the cam is a curved surface, and when it rotates, it has a strong effect on the direction of the liquid raw material to the injection channel 43, which further increases the feeding speed and ensures the quality of the finished product.

As an embodiment of the present invention, the end of the shrinking opening 464 on the side close to the injection channel 43 is inclined downward.

During operation, the raw material pressed out of the feeding groove 46 by the push plate 461 enters the injection molding channel 43 along the feeding port 464, and the end of the feeding port 464 close to the injection channel 43 is inclined downward, and has a downward movement trend. Drive the raw material located in the injection channel 43, accelerate the raw material into the molding cavity 6 for feeding, reduce the pressure loss during the feeding process, ensure that most of the pressure is transmitted to the molding cavity 6, and ensure the quality of the finished product.

The specific workflow is as follows:

When working, the installation of the injection molding machine mechanism is completed, the rotating plate 31 is rotated to make the injection molding machine head 11 align with the injection pipe of the fixed mold 4, the injection molding motor 13 is turned on, the screw 16 in the injection molding machine head 11 starts to rotate, and the injection molding machine head 11. The No. 1 heating layer 17 is energized to heat the interior, and at the same time, the injection molding raw material is poured into the hopper 12. Under the action of the screw 16 and the heating layer, the raw material begins to melt and is pushed to fill the entire injection molding machine head 11. At this time, the fixed mold 4 When the raw material in the injection molding machine head 11 melts and reaches the specified temperature, the screw 16 rotates to apply pressure, and the raw material passes through the hydraulic control one-way valve 44 along the injection pipe and enters the molding cavity 6, and part of the raw material passes The feeding port 464 enters the feeding groove 46. At this time, the expansion and contraction of the No. 2 telescopic rod 462 is the smallest. When the molding cavity 6 is filled with raw materials, the pressure in the cavity increases. When the pressure in the molding cavity 6 reaches the set value, the screw 16 releases the pressure. , the rotating plate 31 rotates and is ready to fill the next mold; because of the existence of the hydraulic control check valve 44, when the screw 16 releases the pressure, the raw material in the mold is blocked in the mold by the hydraulic control check valve 44, and the mold The pressure remains unchanged, the raw material in the molding cavity 6 is gradually cooled by the cooling device 51 in the movable mold 5, and the No. 2 telescopic rod 462 pushes the push plate 461, so that the raw material in the feeding groove 46 is pressed into the molding cavity 6, It is ensured that when the cooling volume of the raw material is reduced, the pressure in the molding cavity 6 does not change, and the No. 2 heating layer 45 arranged on the outside of the injection channel 43 and the No. 3 heating layer 47 outside the feeding groove 46 heat the internal raw materials, and the injection channel 43 is close to The diameter of one side of the movable mold 5 is gradually reduced into a conical shape, which facilitates the separation of the condensed plastic from the molten raw material above. When the plastic is condensed, the No. 2 telescopic rod 462 drives the push plate 461 to retract to restore the pressure to the normal level. The telescopic rod 33 moves downward to separate the fixed mold 4 from the movable mold 5, and the molded plastic is taken out. The telescopic rod returns to its original position again and waits for the next charging operation; the fixed mold 4 is divided into a mounting part 42 and a fixing part 41. When necessary At the time of installation, the mounting member 42 can be removed to facilitate the installation, maintenance and replacement of the internal parts of the mounting member 42.

The above-mentioned front, back, left, right, top and bottom are all based on Figure 1 in the accompanying drawings of the description, and according to the observation angle of the person as a standard, the side of the device facing the observer is defined as the front, and the left side of the observer is defined as the left, And so on.

In the description of the present invention, it should be understood that the terms "center", "portrait", "horizontal", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. 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 device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. A multistation accuse temperature injection molding machine which characterized in that: the injection molding machine comprises an injection molding mechanism (1), a rack (2), a mold mounting mechanism (3), a fixed mold (4) and a movable mold (5); the rack (2) comprises a mounting rack (21), a base (22) and a connecting rack (23), wherein the mounting rack (21) is fixedly connected to the top of the base (22) through the connecting rack (23); the injection molding motor (13) is arranged on the upper surface of the mounting frame (21), and the injection molding machine head (11) is arranged on the lower surface of the mounting frame (21); the injection molding motor (13) is connected with a screw rod (16) in the injection molding machine head (11) by virtue of a rotating shaft (14) penetrating through the mounting frame (21), the hopper (12) is arranged on the upper surface of the mounting frame (21) and is communicated with the interior of the injection molding machine head (11) through a material conveying pipe (15) penetrating through the mounting frame (21), and a first heating layer (17) is arranged on the inner surface of the injection molding machine head (11); die holding mechanism (3) includes rotor plate (31), mount pad (32), telescopic link (33) and mount (34), rotor plate (31) rotate and install base (22) upper surface, rotor plate (31) upper surface evenly is equipped with a set of telescopic link (33) No. around rotor plate (31) axis, telescopic link (33) tip has linked firmly mount pad (32), mount pad (32) top has linked firmly movable mould (5), be equipped with cooling device (51) in movable mould (5), movable mould (5) and top cover half (4) cooperate, and cover half (4) link firmly with rotor plate (31) through mount (34), cover half (4) divide into mounting (41) and installed part (42), mounting (41) and movable mould (5) cooperation form die cavity (6), be equipped with injection moulding passageway (43) in mounting (41), the injection molding channel (43) vertically penetrates through the fixed mold (4), the upper opening of the injection molding channel (43) corresponds to the position of an injection molding machine head (11), a hydraulic control one-way valve (44) is arranged at the position, close to the upper surface of the fixed mold (4), of the injection molding channel (43), the inner surface of one side, close to the movable mold (5), of the injection molding channel (43) is conical, and a second heating layer (45) is arranged on the outer side of the injection molding channel (43); install piece (42) and install in mounting (41) and mould plastics passageway (43) one side, be equipped with cylindric feeding groove (46) in installed piece (42), feeding groove (46) outside is equipped with No. three zone of heating (47), be equipped with push pedal (461) in feeding groove (46), push pedal (461) and feeding groove (46) internal surface sealing sliding connection, push pedal (461) link to each other through rotation motor (463) in No. two telescopic link (462) and installed piece (42) outside, feeding groove (46) link to each other with the passageway (43) of moulding plastics through feeding mouth (464) that set up in mounting (41), feeding mouth (464) are located between pilot operated check valve (44) and cover half (4) lower surface.

2. The multi-station temperature-control injection molding machine according to claim 1, characterized in that: a heat insulation layer (48) is installed in the fixing piece (41), and the heat insulation layer (48) is horizontally arranged and located between the installation piece (42) and the forming cavity (6).

3. The multi-station temperature-control injection molding machine according to claim 2, characterized in that: one side of the push plate (461) close to the injection molding pipeline is eccentrically provided with a stirring roller (465), the stirring roller (465) is a cone, and the large end of the stirring roller (465) is connected with the push plate (461).

4. A multi-station temperature-control injection molding machine according to claim 3, characterized in that: the outer surface of the stirring roller (465) is uniformly provided with a group of fan blades (466) around the central axis of the stirring roller (465), the fan blades (466) adjacent to the push plate (461) extend towards the rotating plate (31), and the end part of the extending part is flush with the side wall of the push plate (461).

5. The multi-station temperature-control injection molding machine according to claim 4, characterized in that: one side of the fan blade (466) close to the push plate (461) is a vertical plane, and one side far away from the push plate (461) is a curved surface.

6. The multi-station temperature-control injection molding machine according to claim 5, characterized in that: the end part of the necking-in mouth (464) close to one side of the injection channel (43) is inclined downwards.

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