Injection molding device

Abstract

The utility model discloses an injection molding device, which relates to the technical field of injection molding and comprises a conveying mechanism, a heater and a controller. Wherein the material conveying mechanism comprises a material conveying pipe, and a material conveying cavity is formed in the material conveying pipe; the heater is arranged on the material conveying pipe in a sleeving mode and comprises a plurality of electric heating pipes, the electric heating pipes are arranged in the circumferential direction of the material conveying pipe at intervals, the electric heating pipes are parallel to the axis of the material conveying pipe, and the electric heating pipes are connected in parallel; the controller is electrically connected with the heater, and the controller is used for regulating and controlling the power input into the electric heating tube and monitoring the on-line state of the electric heating tube; the material conveying pipe comprises a plurality of heating sections, the number of the heaters is the same as that of the heating sections, each heating section is sleeved with one heater, and each heater is electrically connected with the controller. By means of the scheme, when one electric heating tube in the heater is damaged, the heater can still work normally and does not need to be shut down for maintenance immediately, and finally the original production rhythm is prevented from being affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding technical field, especially injection molding device. BACKGROUND

[0002] In injection molding equipment, usually including heating plasticizing mechanism, injection mechanism and mould etc., heating plasticizing mechanism transports material melt to injection mechanism, and then injection mechanism injects into the cavity of mould. In this process, heating ring is needed to heat the material pipe in heating plasticizing mechanism to melt the material in it. Currently commonly used heating ring usually adopts heating wire to heat the material pipe, but when one of the heating wires is damaged, in order to avoid affecting the fluidity of the material in the material pipe, it is needed to stop and repair in time, thereby affecting the original production rhythm.

[0003] Therefore, the utility model provides an injection molding device to solve or at least alleviate the above technical problems. UTILITY MODEL CONTENT

[0004] The utility model discloses an injection molding device, which aims to solve the technical problem that when one of the heating wires in the heating ring is damaged, the original production rhythm is affected.

[0005] To achieve the above object, the utility model provides an injection molding device, which comprises:

[0006] A material conveying mechanism comprises a material pipe, and a material cavity is formed in the material pipe;

[0007] A heater is sleeved on the material pipe, and the heater comprises a plurality of electric heating pipes, the plurality of electric heating pipes are arranged in a circumferential direction of the material pipe, the axis of the electric heating pipe is arranged in parallel with the axis of the material pipe, and the plurality of electric heating pipes are connected in parallel;

[0008] A controller is electrically connected with the heater, and the controller is used for regulating the power input into the electric heating pipe and monitoring the online state of the electric heating pipe;

[0009] The material pipe comprises a plurality of heating sections, the number of the heater is the same as the number of the heating section, one heater is sleeved on each heating section, and each heater is electrically connected with the controller.

[0010] In an embodiment, the heater further comprises a protective shell and a reflective layer, the reflective layer is wrapped on the side of the electric heating pipe away from the material pipe, and the protective shell is wrapped on the side of the reflective layer away from the electric heating pipe.

[0011] In an embodiment, the electric heating tube comprises an infrared heating tube, and a light-reflecting coating is arranged on the side of the reflecting layer facing the infrared heating tube, and the light-reflecting coating is used for reflecting the heat radiation generated by the infrared heating tube.

[0012] In an embodiment, a heat insulation layer is arranged between the reflecting layer and the protective shell, and the two sides of the heat insulation layer are respectively attached to the reflecting layer and the protective shell.

[0013] In an embodiment, the heater further comprises a heat insulation layer arranged on the side of the protective shell away from the material conveying pipe, and the heat insulation layer is used for blocking the heat in the protective shell from escaping to the outside.

[0014] In an embodiment, the material conveying mechanism further comprises a material conveying nozzle, a screw rod and a servo motor, the material conveying nozzle is arranged at one end of the material conveying pipe, the material conveying nozzle is provided with a discharging channel, and the discharging channel is in communication with the material conveying cavity.

[0015] One end of the screw rod extends into the material conveying cavity, the other end of the screw rod is connected to the output end of the servo motor, the servo motor is arranged at the end of the material conveying pipe away from the material conveying nozzle, the servo motor is used for driving the screw rod to rotate, and the screw rod is used for conveying the material.

[0016] In an embodiment, the material conveying mechanism further comprises a plurality of conveying pipes, and the injection molding device further comprises a mold and a plurality of injection mechanisms, the conveying pipe is internally provided with a material conveying channel, a plurality of the conveying pipes are connected to the material conveying nozzle, and the material conveying channel is in communication with the discharging channel.

[0017] The number of the injection mechanisms is the same as that of the conveying pipes, each of the conveying pipes is connected to one of the injection mechanisms, the mold is provided with a cavity, and the injection mechanism comprises an injection port.

[0018] In an embodiment, the injection mechanism further comprises an injection cylinder, a plunger and a driving motor, the injection cylinder is provided with an injection cavity, the injection port is arranged at one end of the injection cylinder, the injection port is in communication with the injection cavity, the conveying pipe is connected to the injection cylinder, and the material conveying channel is in communication with the injection cavity.

[0019] One end of the plunger extends into the injection cavity, the other end of the plunger is connected to the output end of the driving motor, the driving motor is arranged at the end of the injection cylinder away from the injection port, and the driving motor is used for driving the plunger to extend into the injection cavity.

[0020] In an embodiment, the injection molding device further comprises a temperature control assembly, the temperature control assembly comprising a plurality of temperature sensors and a processor, the temperature sensor installation hole being arranged on one side of the electric heating tube close to the electric heating tube, each heating section being provided with at least one temperature sensor, the temperature sensors being in communication connection with the processor, and the processor being in communication connection with the controller.

[0021] In an embodiment, one side of the electric heating tube close to the electric heating tube is coated with a heat absorption layer.

[0022] According to the technical scheme provided by the utility model, the injection molding device comprises a feeding mechanism, a heater and a controller. The feeding mechanism comprises a feeding pipe, and the feeding pipe is provided with a feeding cavity. The heater is sleeved on the feeding pipe, and the heater comprises a plurality of electric heating tubes. The electric heating tubes are arranged in a circumferential direction of the feeding pipe, and the electric heating tubes are arranged in parallel with the axis of the feeding pipe. The electric heating tubes are connected in parallel. The controller is electrically connected with the heater, and the controller is used for regulating the power input into the electric heating tubes and monitoring the online state of the electric heating tubes. The feeding pipe comprises a plurality of heating sections, and the number of the heaters is the same as the number of the heating sections. Each heating section is sleeved with one heater, and each heater is electrically connected with the controller. Through the arrangement, the controller can independently control each heater. When one of the electric heating tubes in the heater is damaged, the remaining undamaged electric heating tubes still emit heat in the circumferential direction of the feeding pipe. At this time, the power input into the electric heating tubes can be adjusted, so that the total heat emitted by the undamaged electric heating tubes is the same as the total heat emitted by the electric heating tubes before one of the electric heating tubes is damaged. Thus, the influence of the damage of the electric heating tube on the heating of the feeding pipe is reduced, and the feeding mechanism can continue to work without immediate shutdown and maintenance, thereby avoiding the influence on the original production rhythm. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to the structures shown in these drawings without creating any creative labor.

[0024] Figure 1 The structure schematic view of the injection molding device provided by the utility model is shown in an embodiment.

[0025] Figure 2 The structure schematic view of the feeding mechanism provided by the utility model is shown in an embodiment.

[0026] Figure 3 The structure schematic view of the electric heating tube surrounding the feeding pipe in the feeding mechanism provided by the utility model is shown in an embodiment.

[0027] Figure 4 Part structure schematic diagram of one embodiment of the heater provided by the utility model;

[0028] Figure 5 Part structure schematic diagram of one embodiment of the heater provided by the utility model after being installed on the material conveying pipe;

[0029] Figure 6 Part structure schematic diagram of one embodiment of the heater provided by the utility model after being installed on the material conveying pipe; Figure 5 Part structure schematic diagram of one embodiment of the heater provided by the utility model after being installed on the material conveying pipe.

[0030] Explanation of reference numerals:

[0031] 100, injection molding device;

[0032] 1, material conveying mechanism; 11, material conveying pipe; 111, material conveying cavity; 112, heating section; 12, material conveying nozzle; 121, discharging channel; 13, screw; 14, servo motor; 15, conveying pipe; 16, hopper;

[0033] 2, heater; 21, electric heating pipe; 22, reflecting layer; 23, heat preservation layer; 24, protective shell; 25, heat insulation layer;

[0034] 3, incident mechanism; 31, incident port; 32, incident cylinder; 321, incident cavity; 33, plunger;

[0035] 4, mold; 41, cavity.

[0036] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with the embodiments. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0038] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0039] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0040] In the injection molding device, generally including heating plasticizing mechanism, injection mechanism and mold, etc., the heating plasticizing mechanism transports the material after melting to the injection mechanism, and then the injection mechanism is injected into the cavity of the mold. In this process, the heating ring needs to heat the material pipe in the heating plasticizing mechanism to melt the material in it, and the melted material is injected into the cavity of the mold through the injection mechanism. At present, the commonly used heating ring adopts resistance wire to surround the pipe wall of the material pipe for heating, and the resistance wire is arranged on the outer wall of the material pipe along the circumferential direction of the material pipe. A plurality of resistance wires are arranged in parallel along the axial direction of the material pipe, and each resistance wire is responsible for heating part of the area of the material pipe.

[0041] According to the applicant's research, in the commonly used heating ring, if a heating wire is damaged, the temperature of the corresponding area of the heating wire on the material pipe is lower than that of other areas, and the material in the molten state flowing to the area may produce crystalline body due to cold and hot alternation, or reduce the flowability of the material, thereby affecting the quality of the material injected into the cavity, and ultimately affecting the quality of the injection molding product. In this case, immediate shutdown for repair is required, and the shutdown repair process will disturb the original production plan, resulting in the production rhythm being disturbed.

[0042] Therefore, the utility model provides an injection molding device to solve or at least alleviate the above problems.

[0043] Please refer to Figures 1 to 3 and Figure 5In an embodiment of the utility model, the injection molding device 100 includes a material conveying mechanism 1, a heater 2 and a controller. The material conveying mechanism 1 includes a material conveying pipe 11, and a material conveying cavity 111 is formed in the material conveying pipe 11. The heater 2 is sleeved on the material conveying pipe 11, and the heater 2 includes a plurality of electric heating pipes 21. The plurality of electric heating pipes 21 are arranged along the circumference of the material conveying pipe 11, the axis of the electric heating pipe 21 is parallel to the axis of the material conveying pipe 11, and the plurality of electric heating pipes 21 are connected in parallel. The controller is electrically connected with the heater 2, and the controller is used for regulating the power input into the electric heating pipe 21 and monitoring the online state of the electric heating pipe 21. The material conveying pipe 11 includes a plurality of heating sections 112, the number of the heater 2 is the same as the number of the heating section 112, one heater 2 is sleeved on each heating section 112, and each heater 2 is electrically connected with the controller.

[0044] Specifically, a plurality of heating sections 112 are arranged on the material conveying pipe 11, one heater 2 is arranged on each heating section 112, the heater 2 is sleeved on the heating section 112, the axis of the electric heating pipe 21 is parallel to the axis of the material conveying pipe 11, and each electric heating pipe 21 can provide heat to the heating section 112 along the extension direction of the heating section 112, so that the heating process of the heating section 112 is more uniform. Meanwhile, the plurality of electric heating pipes 21 are connected in parallel, the controller controls the power input into the heater 2, and after the controller monitors that one or more electric heating pipes 21 of a certain heating section 112 are offline, the input power of the heater 2 corresponding to the heating section 112 can be dynamically adjusted, so that the heater 2 can provide constant heat output to the heating section 112, thereby reducing the influence of the damage of one or more electric heating pipes 21 in the heating section 112 on the heating of the material conveying pipe 11. Meanwhile, one heater 2 is arranged on each heating section 112, after the end of a production cycle, when the injection molding device 100 is shut down for maintenance, only the heater 2 with the damaged electric heating pipe 21 needs to be repaired, and the heater 2 of other heating sections 112 does not need to be repaired, so that the maintenance efficiency is improved, the downtime is shortened, and the production interval time is reduced. In the embodiment, the controller can be integrated in a control cabinet or an electric control box, and at least includes a control regulator (such as a BQ25758 controller) that can regulate the input voltage and a multilayer electrical monitoring sensor that can monitor the power-on state of the electrical device.

[0045] The technical scheme provided by the embodiment is characterized in that the material conveying pipe 11 is segmented, one heater 2 is arranged in each segment, a plurality of electric heating pipes 21 are arranged in each heater 2 along the circumferential direction of the material conveying pipe 11 and parallel to the axial direction of the material conveying pipe 11, the plurality of electric heating pipes 21 are connected in parallel, and the power input into each heater 2 is controlled by the controller; when one or a small number of electric heating pipes 21 in one heater 2 are damaged, the input power of the heater 2 only needs to be adjusted by the controller, so that the heat provided by the heater 2 to the material conveying pipe 11 can be maintained as much as possible, thereby reducing the influence of the damage of the electric heating pipe 21 on the heating of the material conveying pipe 11, and the material conveying mechanism 1 can continue to work without immediate shutdown and maintenance, so that the original production rhythm is avoided.

[0046] Further, referring to Figures 4 to 6 In an embodiment of the utility model, the heater 2 further comprises a protective shell 24 and a reflective layer 22, the reflective layer 22 is covered on the side of the electric heating pipe 21 away from the material conveying pipe 11, and the protective shell 24 is covered on the side of the reflective layer 22 away from the electric heating pipe 21. The reflective layer 22 can reflect the heat generated by the electric heating pipe 21 back to the direction of the material conveying pipe 11, reduce the loss of heat to other directions, make the heat more concentratedly act on the material conveying pipe 11, and improve the heating efficiency. The material of the protective shell 24 comprises one of stainless steel and aluminum alloy. The protective shell 24 is cylindrical in whole and hollow inside, and the material conveying pipe 11 is arranged in the protective shell 24. The protective shell 24 plays a further heat preservation role on the one hand, blocks the entry of external cold air, reduces the convection loss of heat, and on the other hand can reduce the transmission of heat generated by the electric heating pipe 21 to the external environment, reduce the influence on the surrounding environment temperature, in addition, the protective shell 24 can isolate the high-temperature electric heating pipe 21 and the reflective layer 22 from the external environment, avoid direct contact of personnel with the high-temperature components, and reduce the risk of scalding.

[0047] Further, in an embodiment of the utility model, the electric heating pipe 21 comprises an infrared heating pipe, and a light-reflecting coating is arranged on the side of the reflective layer 22 facing the infrared heating pipe, and the light-reflecting coating is used for reflecting the heat radiation generated by the infrared heating pipe. In the embodiment, the electric heating pipe 21 adopts the infrared heating pipe, and the material of the light-reflecting coating comprises one of ceramic coating, nano composite coating and metal coating, but is not limited to the above. The light-reflecting coating can reflect the heat radiation generated by the infrared heating pipe back to the surface of the material conveying pipe 11, reduce the loss of heat to other directions, make the infrared radiation more concentratedly act on the material conveying pipe 11, improve the heating efficiency of the material conveying pipe 11, reduce the input power of the electric heating pipe 21, and be beneficial to saving electric energy. When the infrared heating pipe is used as the heat source, the infrared heating pipe and the material conveying pipe 11 can be provided with a certain gap, so that the infrared radiation can be uniformly conducted to the surface of the material conveying pipe 11, and at the same time, the light-reflecting coating can also uniformly reflect the infrared radiation to the surface of the material conveying pipe 11, reducing the situation of local overheating or insufficient heating.

[0048] Referring to Figure 4 In an embodiment of the present application, a heat preservation layer 23 is arranged between the reflecting layer 22 and the protective shell 24, and the two sides of the heat preservation layer 23 are respectively attached to the reflecting layer 22 and the protective shell 24. In this embodiment, the material of the heat preservation layer 23 includes one of organic heat preservation materials (such as phenolic foam plastic) and inorganic heat preservation materials (such as aerogel). Preferably, in this embodiment, the material of the heat preservation layer 23 is aerogel material. The heat preservation layer 23 can effectively reduce the heat transfer through the three ways of conduction, convection and radiation. The reflecting layer 22 can reflect heat radiation and reduce heat transfer by radiation. The heat preservation layer 23 further blocks the conduction and convection of heat, so that the heat is more concentrated in the heater 2. By reducing heat loss, the heat preservation layer 23 can improve the thermal efficiency of the heater 2, so that more heat is used to heat the material conveying pipe 11, thereby reducing energy consumption. In addition, the heat preservation layer 23 can provide physical support for the reflecting layer 22 and the protective shell 24, and enhance the stability of the structure of the entire heater 2. This structural design helps to prevent the reflecting layer 22 and the protective shell 24 from deforming under high temperature or external force.

[0049] In an embodiment of the present application, the heater 2 further includes a heat insulation layer 25 arranged on the side of the protective shell 24 away from the material conveying pipe 11. The heat insulation layer 25 is used to block the heat in the protective shell 24 from escaping to the outside. In this embodiment, the heat insulation layer 25 is coated on the outer side of the protective shell 24, and the coating material includes one of thermal insulation paint, water-based reflective paint or nano-composite ceramic paint, so as to play a role in heat preservation and insulation of the protective shell 24, block the heat transfer from the protective shell 24 to the outside, reduce the heat loss, and avoid the temperature around the heater 2 being too high. At the same time, the heat insulation layer 25 can effectively reduce the temperature of the outer surface of the protective shell 24, and avoid scalding accidents when the operator contacts the equipment.

[0050] Referring to Figure 1 With Figure 2In an embodiment of the utility model, the material conveying mechanism 1 further includes a material conveying nozzle 12, a screw rod 13 and a servo motor 14, the material conveying nozzle 12 is arranged at one end of the material conveying pipe 11, the material conveying nozzle 12 is provided with a discharging channel 121, the discharging channel 121 is communicated with the material conveying cavity 111; one end of the screw rod 13 is inserted into the material conveying cavity 111, the other end of the screw rod 13 is connected with the output end of the servo motor 14, the servo motor 14 is arranged at the end of the material conveying pipe 11 far away from the material conveying nozzle 12, the servo motor 14 is used to drive the screw rod 13 to rotate, and the screw rod 13 is used to convey materials. In the embodiment, the screw rod 13 includes a conveying screw rod 13, the conveying screw rod 13 can continuously rotate under the driving of the servo motor 14, the screw rod 13 is provided with helical blades, and the helical blades can continuously move materials to the direction of the material conveying nozzle 12 along with the rotation of the screw rod 13. A hopper 16 is arranged between the material conveying nozzle 12 and the servo motor 14, the hopper 16 is communicated with the material conveying cavity 111, when the injection molding operation is carried out, the materials in the hopper 16 continuously slide into the material conveying cavity 111 and move to the direction of the material conveying nozzle 12 under the action of the screw rod 13, and the materials are gradually melted by the heat provided by the heater 2 in the process of moving, and finally are sent into the discharging channel 121.

[0051] Further, refer to Figure 1 With Figure 2 In an embodiment of the utility model, the material conveying mechanism 1 further includes a plurality of conveying pipes 15, the injection molding device 100 further includes a mold 4 and a plurality of incidence mechanisms 3, the conveying pipe 15 is provided with a material conveying channel inside, the plurality of conveying pipes 15 are connected with the material conveying nozzle 12, and the material conveying channel is communicated with the discharging channel 121; the incidence mechanisms 3 are same in number with the conveying pipes 15, each conveying pipe 15 is connected with one incidence mechanism 3, the mold 4 is provided with a cavity 41, and the incidence mechanism 3 includes an incidence port 31; the incidence port 31 is communicated with the cavity 41. In the embodiment, one material conveying mechanism 1 simultaneously corresponds to feeding a plurality of incidence mechanisms 3, when the injection molding operation is carried out, first, the materials in the molten state are input into the incidence mechanism 3 through the material conveying structure, and then the materials are shot into the cavity 41 by the incidence mechanism 3. The arrangement can avoid the phenomenon that the materials are unevenly shot into the cavity 41, and is favorable to guarantee the quality of the injection molding product. In the embodiment, the material conveying nozzle 12 is provided with a valve, which is used to control the opening and closing size of the discharging channel 121, so as to adjust the flow in the material conveying nozzle 12. Through the arrangement of the embodiment, the material conveying mechanism 1 can simultaneously convey materials to the incidence mechanism 3 through the plurality of conveying pipes 15, and the efficiency of the injection molding production is improved. The materials can be more evenly filled into the cavity 41 through the plurality of incidence ports 31, the generation of weld marks and bubbles is reduced, and the quality of the injection molding product is improved.

[0052] In the embodiment of the utility model, incident mechanism 3 still includes incident cylinder 32, plunger 33 and drive motor, incident cylinder 32 is set up with incident cavity 321, incident port 31 is set up in one end of incident cylinder 32, and incident port 31 is communicated with incident cavity 321, conveying pipe 15 is connected with incident cylinder 32, and feed channel is communicated with incident cavity 321, one end of plunger 33 is inserted into incident cavity 321, the other end of plunger 33 is connected with the output end of drive motor, drive motor is set up in one end of incident cylinder 32 far from incident port 31, and drive motor is used to drive plunger 33 to insert into incident cavity 321, in the embodiment, the extension and contraction of plunger 33 are controlled by drive motor, can realize high-precision position, speed and pressure control, and the dimensional accuracy and quality consistency of injection molding product are improved significantly. The reciprocating movement of plunger 33 in incident cavity 321 is more stable, and injection instability caused by mechanical vibration is reduced. According to the embodiment, when carrying out injection molding operation, feed mechanism 1 first conveys material to incident cavity 321 through conveying pipe 15, at this time, under the action of material pressure, plunger 33 moves towards the direction of drive motor, after the filling of material in incident cavity 321 is completed, under the drive of drive motor, material is injected into cavity 41 through incident port 31 to complete the injection molding process. When carrying out injection molding operation, incident mechanism 3 can also play the role of metering to count the volume of material injected into cavity 41.

[0053] In the embodiment of the utility model, injection molding device 100 still includes temperature control assembly, temperature control assembly includes multiple temperature sensors and processor, temperature sensor is installed in temperature measuring hole, and each heating section 112 is installed with at least one temperature sensor, temperature sensor is connected with processor in communication, and processor is connected with controller in communication. Real-time temperature data is obtained through temperature sensor, and real-time temperature data is transmitted to processor (such as CPU), after temperature data is analyzed by processor, controller can be fed back in real time to adjust the input power in heater 2, so as to realize the dynamic adjustment of the temperature in feed pipe 11.

[0054] In the embodiment of the utility model, one side of feed pipe 11 close to electric heating tube 21 is coated with heat absorption layer. The heat absorption layer is coated on the outer surface of the feed pipe 11, and the coating layer includes one of black chrome coating, black nickel coating, copper oxide coating, metal ceramic composite coating and the like. By setting the heat absorption layer, the heat radiation emitted by the electric heating tube 21 can be absorbed by the heat absorption layer and transferred to the feed pipe 11, thereby reducing heat loss and further improving heating efficiency.

[0055] The above merely illustrates the exemplary embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the technical concept of the present application and by using the content of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. An injection molding apparatus characterized by comprising: The utility model relates to a kind of injection molding device and method, including: Material conveying mechanism, the material conveying mechanism includes material conveying pipe, material conveying cavity is opened in the material conveying pipe; Heater, the heater is sleeved in the material conveying pipe, the heater includes multiple electric heating pipes, multiple electric heating pipes are arranged along the circumference of the material conveying pipe, the axis of electric heating pipe is arranged in parallel with the axis of the material conveying pipe, and multiple electric heating pipes are connected in parallel; Controller, the controller is electrically connected with the heater, the controller is used to regulate the power input into the electric heating pipe and monitor the on-line state of the electric heating pipe; The material conveying pipe includes multiple heating sections, the number of the heater is same with the number of the heating section, each heating section is sleeved with a heater, and each heater is electrically connected with the controller.

2. The injection molding apparatus of claim 1, wherein The heater further includes a protective shell and a reflective layer, the reflective layer is wrapped on the side of the electric heating pipe away from the material conveying pipe, and the protective shell is wrapped on the side of the reflective layer away from the electric heating pipe.

3. The injection molding apparatus of claim 2, wherein The electric heating pipe includes an infrared heating pipe, the side of the reflective layer facing the infrared heating pipe is provided with a reflective coating, and the reflective coating is used to reflect the heat radiation generated by the infrared heating pipe.

4. The injection molding apparatus of claim 2, wherein A heat preservation layer is provided between the reflective layer and the protective shell, and the two sides of the heat preservation layer are respectively attached to the reflective layer and the protective shell.

5. The injection molding apparatus of claim 2, wherein The heater further includes a heat insulation layer, which is provided on the side of the protective shell away from the material conveying pipe, and the heat insulation layer is used to block the heat in the protective shell from escaping to the outside world.

6. The injection molding apparatus of claim 1, wherein The material conveying mechanism further includes a material conveying nozzle, a screw and a servo motor, the material conveying nozzle is provided at one end of the material conveying pipe, the material conveying nozzle is provided with a discharge channel, and the discharge channel is communicated with the material conveying cavity. One end of the screw extends into the material conveying cavity, the other end of the screw is connected with the output end of the servo motor, the servo motor is provided at the end of the material conveying pipe away from the material conveying nozzle, the servo motor is used to drive the screw to rotate, and the screw is used to transport materials.

7. The injection molding apparatus of claim 6, wherein The material conveying mechanism further includes multiple conveying pipes, and the injection molding device further includes a mold and multiple incident mechanisms, the conveying pipes are internally provided with material conveying channels, multiple conveying pipes are connected with the material conveying nozzle, and the material conveying channels are communicated with the discharge channel. The number of the incident mechanisms is same with the number of the conveying pipes, each conveying pipe is connected with an incident mechanism, the mold is provided with a cavity, and the incident mechanism includes an incident port.

8. The injection molding apparatus of claim 7, wherein The incident mechanism further includes an incident cylinder, a plunger and a driving motor, the incident cylinder is provided with an incident cavity, the incident port is provided at one end of the incident cylinder, and the incident port is communicated with the incident cavity, the conveying pipe is connected with the incident cylinder, and the material conveying channel is communicated with the incident cavity. One end of the plunger extends into the incident cavity, the other end of the plunger is connected with the output end of the driving motor, the driving motor is provided at the end of the incident cylinder away from the incident port, and the driving motor is used to drive the plunger to extend into the incident cavity.

9. The injection molding apparatus of claim 1, wherein The injection molding device further comprises a temperature control assembly, which comprises a plurality of temperature sensors and a processor; the side of the material conveying pipe close to the electric heating pipe is provided with a temperature measuring hole, and the temperature sensors are installed in the temperature measuring hole; each heating section is provided with at least one temperature sensor, and the temperature sensors are in communication connection with the processor; and the processor is in communication connection with the controller.

10. The injection molding apparatus of claim 1, wherein The side of the material conveying pipe close to the electric heating pipe is coated with a heat absorption layer.

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