Plastic forming automatic feeding device with raw material preheating function

Abstract

The utility model relates to the related technical field of plastic molding, in particular to a plastic molding automatic feeding device with a raw material preheating function, which comprises a tank body with an output port and an input port and sealing performance, and further comprises a sealing feeding component arranged on the output port of the tank body and a sealing cover arranged on the input port, the heating piece I is arranged outside the tank body in a sleeving manner and is used for heating the tank body; and the stirrer rotates in the tank body. Raw materials in the tank body are preheated through the first heating piece and the second heating piece, then the raw materials evenly absorb heat under the action of the stirrer, then the preheating effect of the heating pipe and the third heating piece on the raw materials is further enhanced, and at the moment, the raw materials are preheated to a certain temperature, so that the raw materials are heated to a certain temperature. Furthermore, the raw materials can reach the plasticizing temperature more quickly after entering the screw extruder, so that the raw materials are more easily plasticized, and the time required by the whole plasticizing process is shortened.

Description

Technical Field

[0001] This utility model relates to an automatic feeding device, and more particularly to an automatic feeding device for plastic molding with raw material preheating function, belonging to the field of plastic molding related technology. Background Technology

[0002] Plastic molding is a widely used process for manufacturing various plastic products. It mainly includes a casting system, a molding part system, a temperature control system, a venting system, an ejection system, a guiding system, etc. Among them, screw extruders are widely used in the part molding stage. The main working principle of a screw extruder is that it rotates through external power transmission, pushing the material forward. The material source of the screw extruder is mainly through the hopper. Then, the heating device on the screw extruder heats the plastic granules or powder to a molten state. The heated plastic becomes viscous and fluid, and can be pushed into the mold by the injection molding machine. The molten plastic material is injected into the mold through the injection molding machine.

[0003] However, when feeding materials into a screw extruder via a hopper, the raw materials are generally placed in the hopper without any processing. Only when the screw extruder is in operation is the raw material from the hopper conveyed into the extruder. During the first half of the screw extruder's stroke, the raw material is in an endothermic plasticizing stage before slowly plasticizing, softening, and flowing. Increasing the output efficiency of the screw extruder affects the degree of plasticization of the raw material, making it difficult to push and plasticize the material, and preventing it from effectively and quickly reaching the plasticizing temperature, thus affecting the screw extruder's output efficiency. Furthermore, when materials at room temperature enter the screw extruder, they need to absorb heat from the extruder, requiring the screw extruder to consume relatively high energy to effectively plasticize the raw material.

[0004] Therefore, there is an urgent need to improve the automatic feeding device for plastic molding with raw material preheating function in order to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide an automatic feeding device for plastic molding with raw material preheating function. The device preheats the raw material inside the tank through heating element one and heating element two. Then, under the action of the stirrer, the raw material absorbs the heat evenly. The preheating effect of the raw material is further enhanced by heating tube and heating element three. At this time, the raw material has been preheated to a certain temperature, which enables the raw material to reach the plasticizing temperature more quickly after entering the screw extruder, making the raw material easier to plasticize and thus shortening the time required for the entire plasticizing process.

[0006] To achieve the above objectives, the main technical solution adopted by this utility model includes: a tank having an output port and an input port and being sealed; a sealing feeding assembly disposed on the output port of the tank and a sealing cover disposed on the input port; a heating element disposed on the outside of the tank and heating the tank; a stirrer rotating inside the tank, the stirrer being driven to rotate by a drive motor disposed on the tank; and a temperature control assembly for detecting the internal temperature of the tank and adjusting the output power of the heating element.

[0007] Preferably, the temperature control component includes a controller and a temperature sensor for detecting the internal temperature of the tank. The input terminal of the controller is connected to the output terminal of the temperature sensor. The temperature sensor detects the internal temperature of the tank and generates a temperature electrical signal. The input terminal of the controller receives the temperature electrical signal and generates a control command. The control command controls the output power of the heating element.

[0008] Preferably, the stirrer includes a rotating shaft with a hollow structure and spiral blades connected to the rotating shaft. One end of the rotating shaft passes through the top of the tank and is connected to the output end of a drive motor installed on the tank. The interior of the rotating shaft is provided with a heating element that is electrically connected to the controller.

[0009] Preferably, the tank body is provided with a heating shell on the outside, the heating shell is in contact with the tank body, and the heating element is disposed inside the heating shell.

[0010] Preferably, the sealed feeding assembly includes a feeding drum with an inlet and an outlet, a rotating rod rotatably connected to the feeding drum, several partitions connected to the rotating rod, and a rotary motor. The output end of the rotary motor is connected to one end of the rotating rod extending to the outside of the feeding drum. The several partitions are equidistantly arranged around the central axis of the rotating rod, and the several partitions divide the inside of the feeding drum into several feeding chambers of the same size. The inlet of the feeding drum is connected to the output port of the tank, and the outlet of the feeding drum is connected to a heat-spreading pipe arranged at an inclined downward direction.

[0011] Preferably, a heating tube is rotatably connected to the heat spreader, the interior of the heating tube is connected to the interior of the heat spreader, and a heating element three is provided on the exterior of the heating tube, the heating element three being electrically connected to the controller.

[0012] Preferably, a gear ring is connected to the outer wall of the heating tube, an output motor is provided on the heat dissipation tube, and a gear is connected to the output end of the output motor, the gear meshing with the gear ring.

[0013] Preferably, a heating groove is formed on the inner wall of the heating tube, and the heating groove extends spirally from one end of the heating tube to the other end.

[0014] This utility model has at least the following beneficial effects:

[0015] 1. The raw material inside the tank is preheated by heating element one and heating element two. Then, under the action of the agitator, the raw material absorbs the heat evenly. Next, the preheating effect of the raw material is further enhanced by heating tube and heating element three. At this time, the raw material has been preheated to a certain temperature, which enables the raw material to reach the plasticizing temperature more quickly after entering the screw extruder, making the raw material easier to plasticize. This shortens the time required for the entire plasticizing process and increases the output efficiency of the screw extruder. This not only improves the production efficiency of plastic molding, but also reduces energy consumption. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the isometric three-dimensional structure provided by this utility model;

[0018] Figure 2 A cross-sectional structural schematic diagram provided for this utility model;

[0019] Figure 3 Provided by this utility model Figure 1 Schematic diagram of the middle section;

[0020] Figure 4 Provided by this utility model Figure 2 Schematic diagram of local structure Figure 1 ;

[0021] Figure 5 Provided by this utility model Figure 2 Schematic diagram of local structure Figure 2 .

[0022] In the diagram, 1. Tank; 2. Sealed feeding assembly; 201. Feeding drum; 202. Rotating rod; 203. Baffle plate; 204. Rotary motor; 3. Sealing cover; 4. Heating element one; 5. Agitator; 501. Rotating shaft; 502. Spiral blade; 6. Drive motor; 7. Temperature sensor; 8. Controller; 9. Heating element two; 10. Heating shell; 11. Feeding chamber; 12. Heat spreader; 13. Heating tube; 14. Heating element three; 15. Gear ring; 16. Gear; 17. Output motor; 18. Heating tank; 19. Screw extruder. Detailed Implementation

[0023] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0024] like Figures 1-5 As shown, the automatic plastic molding feeding device with raw material preheating function provided in this embodiment includes a tank 1 with an output port and an input port and a seal, a sealing feeding assembly 2 provided on the output port of the tank 1, a sealing cover 3 on the input port, a heating element 4 sleeved on the outside of the tank 1 and heating the tank 1, a stirrer 5 rotating inside the tank 1, and a temperature control assembly. Specifically:

[0025] Under the action of the sealing feeding assembly 2 and the sealing cover 3, the inside of the tank 1 is in a closed state. When it is necessary to add raw materials into the tank 1, it is only necessary to open the sealing cover 3. When it is necessary to output the raw materials inside the tank 1, it is only necessary to use the sealing feeding assembly 2 to convey them, which reduces the internal temperature loss of the tank 1 and thus reduces energy consumption.

[0026] A heating shell 10 is provided on the outside of the tank body 1, and a heating element 4 is disposed inside the heating shell 10 to protect the heating element 4 and reduce heat loss when the heating element is working. Furthermore, the inner wall of the heating shell 10 has thermal conductivity. Therefore, when the heating shell 10 comes into contact with the tank body 1, the heat output by the heating element 4 will be transferred from the tank body 1 to its interior and absorbed by the raw material inside the tank body 1, thereby increasing the temperature of the raw material.

[0027] like Figure 2 As shown, the stirrer 5 is driven to rotate by the drive motor 6 installed on the tank 1. By using the stirrer 5, the raw materials inside the tank 1 are stirred, so that the raw materials are heated more evenly, and the efficiency of raw material preheating is increased.

[0028] To enhance the control and monitoring of the internal temperature of tank 1, a temperature control component is installed. This component detects the internal temperature of tank 1 and adjusts the output power of heating element 4 to regulate the internal temperature of tank 1 to a suitable range. When the raw material and the internal temperature of tank 1 approach the upper limit of the range, the temperature control component adjusts the output power of heating element 4 to reduce the heat supply. In addition, the sealing feeding component 2 also carries some heat when discharging raw material. Together with the temperature control component, the internal temperature of tank 1 can be regulated.

[0029] Below the device is a screw extruder 19, whose input end is connected to the output end of the sealed feeding assembly 2. The screw extruder 19 is existing technology equipment and is a common piece of equipment in the field of plastic molding, so it will not be described in detail.

[0030] When in use, the material enters the tank 1 through the input port. Then, the heating element 4 is activated to heat the inside of the tank 1. Under the action of the agitator 5, the material absorbs heat evenly and raises itself to the required temperature range. When the screw extruder 19 needs to be fed, the sealing feeding assembly 2 is activated. Under the action of the sealing feeding assembly 2, the material inside the tank 1 is transported to the screw extruder 19. At this time, the material has been preheated to a certain temperature, which enables the material to reach the plasticizing temperature more quickly after entering the screw extruder 19, thereby shortening the time required for the entire plasticizing process. This not only improves production efficiency but also reduces energy consumption because the amount of heat that the material needs to absorb from the screw extruder 19 after preheating is reduced.

[0031] Secondly, in the existing technology, the length of the screw extruder 19 is limited due to the overall structure of the plastic molding equipment. Without changing the output efficiency of the screw extruder 19, the distance and time for heating the raw material will be shortened. Consequently, the raw material moving inside the screw extruder 19 may not reach the plasticizing temperature quickly due to insufficient heating. Therefore, the preheating of the raw material by this device can assist the screw extruder 19 in quickly reaching the plasticizing temperature without affecting the output efficiency of the screw extruder 19.

[0032] The temperature control component includes a controller 8 and a temperature sensor 7 for detecting the internal temperature of the tank 1. The input terminal of the controller 8 is connected to the output terminal of the temperature sensor 7. The temperature sensor 7 detects the internal temperature of the tank 1 and generates a temperature electrical signal. The input terminal of the controller 8 receives the temperature electrical signal and generates a control command. The control command controls the output power of the heating element 4.

[0033] like Figure 2 As shown, the stirrer 5 includes a hollow rotating shaft 501 and a spiral blade 502 connected to the rotating shaft 501. One end of the rotating shaft 501 passes through the top of the tank body 1 and is connected to the output end of the drive motor 6 installed on the tank body 1. The interior of the rotating shaft 501 is provided with a heating element 2 9 electrically connected to the controller 8. During the rotation of the stirrer 5, the heating element 2 9 inside the rotating shaft 501 can also heat the raw material located at the axial position of the tank body 1. The heating element 2 9, in cooperation with the heating element 1 4, improves the preheating efficiency of the raw material inside the tank body 1.

[0034] To ensure that the sealed feeding assembly 2 can transport the raw materials inside the tank 1 while minimizing heat loss, the sealed feeding assembly 2 includes a feeding drum 201 with an inlet and an outlet, a rotating rod 202 rotatably connected to the feeding drum 201, several partitions 203 connected to the rotating rod 202, and a rotary motor 204. The output end of the rotary motor 204 is connected to one end of the rotating rod 202 extending outside the feeding drum 201. The partitions 203 are equidistantly arranged around the central axis of the rotating rod 202. The feeding drum 201 is divided into several feeding chambers 11 of the same size by several partitions 203. The inlet of the feeding drum 201 is connected to the outlet of the tank 1. The outlet of the feeding drum 201 is connected to a heat-spreading pipe 12 that is inclined downward. When one of the feeding chambers 11 is connected to the outlet of the tank 1, the raw material will fall into the feeding chamber 11. Then, under the action of the rotary motor 204, the feeding chamber 11 is moved and moved to the position connected to the outlet of the feeding drum 201. Then the raw material will fall into the heat-spreading pipe 12.

[0035] like Figure 3 as well as Figure 4 As shown, in order to further preheat the raw material output from tank 1 and make the heat carried between the raw material particles uniform, a heating tube 13 is rotatably connected to the heat-spreading pipe 12. The heat-spreading pipe 12 is a partitioned pipe structure, and the heating tube 13 rotates at the partition. The interior of the heating tube 13 is connected to the interior of the heat-spreading pipe 12. A heating element 3 14 is provided on the outside of the heating tube 13. The heating element 3 14 is electrically connected to the controller 8. Under the control of the controller 8, the heating element 3 14 will heat the heating tube 13, thereby heating the raw material flowing in it.

[0036] In order to improve the preheating effect of heating tube 13 on raw materials, a gear ring 15 is connected to the outer wall of heating tube 13. An output motor 17 is provided on heat exchange tube 12. A gear 16 is connected to the output end of output motor 17. The gear 16 meshes with the gear ring 15. Driven by output motor 17, gear 16 drives gear ring 15 to rotate, which in turn drives heating tube 13 to rotate, so that the raw materials inside heating tube 13 can be heated evenly.

[0037] A heating groove 18 is provided on the inner wall of the heating tube 13. The heating groove 18 extends spirally from one end of the heating tube 13 to the other end, which increases the residence time of the raw material particles inside the heating tube 13 and also increases the heating effect of the raw material inside the heating tube 13.

[0038] The heating element 1 (4), heating element 2 (9), and heating element 3 (14) in the above structure are all existing technology equipment. This equipment is a common structure in industrial production equipment. Its main function is to heat the object to be heated, and it is easy to adjust and use. In this device, it is mainly used to heat the tank 1 and the raw materials. There is no limitation on the model of the heating element equipment. It can be selected and provided according to the usage requirements. It will not be described in detail here.

[0039] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0040] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0041] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A plastic molding automatic feeding device with raw material preheating function, comprising a tank body (1) with an output port and an input port and having sealing property, characterized in that: Also include: Sealing feeding assembly (2) provided on the output port of the tank body (1) and sealing cover (3) provided on the input port; Heating element one (4) is sleeved on the outside of the tank body (1) and heats the tank body (1); The stirrer (5) rotates in the inside of the tank body (1), and the stirrer (5) is driven to rotate by the driving motor (6) provided on the tank body (1); The temperature control assembly is used for detecting the temperature in the tank body (1) and regulating the output power of the heating element one (4).

2. The automatic plastic forming material supply device with a raw material preheating function according to claim 1, characterized in that: The temperature control assembly includes a controller (8) and a temperature sensor (7) for detecting the temperature in the tank body (1), the input end of the controller (8) is connected with the output end of the temperature sensor (7), the temperature sensor (7) detects the temperature in the tank body (1) and forms a temperature electric signal, the input end of the controller (8) receives the temperature electric signal and forms a control instruction, and the control instruction controls the output power of the heating element one (4).

3. The automatic plastic forming material supply device with a raw material preheating function according to claim 2, characterized in that: The stirrer (5) includes a rotating shaft (501) with a hollow structure and a spiral blade (502) connected to the rotating shaft (501), one end of the rotating shaft (501) penetrates the top of the tank body (1) and is connected with the output end of the driving motor (6) installed on the tank body (1), and the inside of the rotating shaft (501) is provided with a heating element two (9) electrically connected with the controller (8).

4. The automatic plastic forming material supply device with a raw material preheating function according to claim 1, characterized in that: The outside of the tank body (1) is provided with a heating shell (10), the heating shell (10) is in contact with the tank body (1), and the heating element one (4) is arranged in the heating shell (10).

5. The automatic plastic forming material supply device with a raw material preheating function according to claim 2, characterized in that: The sealing feeding assembly (2) includes a feeding drum (201) with an inlet and an outlet, a rotating rod (202) rotatably connected to the feeding drum (201), a plurality of partitions (203) connected to the rotating rod (202), and a rotating motor (204), the output end of the rotating motor (204) is connected with one end of the rotating rod (202) extending to the outside of the feeding drum (201), a plurality of the partitions (203) are equidistantly arranged around the central axis of the rotating rod (202), a plurality of the partitions (203) divide the inside of the feeding drum (201) into a plurality of feeding cavities (11) with the same size, the inlet of the feeding drum (201) is in communication with the output port of the tank body (1), and the outlet of the feeding drum (201) is connected with a heat pipe (12) inclined downward.

6. The automatic plastic forming material supply device with a raw material preheating function according to claim 5, characterized in that: The heating pipe (13) is rotatably connected to the heat pipe (12), the inside of the heating pipe (13) is in communication with the inside of the heat pipe (12), and the outside of the heating pipe (13) is provided with a heating element three (14), and the heating element three (14) is electrically connected with the controller (8).

7. The automatic plastic forming material supply device with a raw material preheating function according to claim 6, characterized in that: The heating pipe (13) is rotatably connected to the heat pipe (12), the inside of the heating pipe (13) is in communication with the inside of the heat pipe (12), and the outside of the heating pipe (13) is provided with a heating element three (14), and the heating element three (14) is electrically connected with the controller (8). The outside wall of the heating pipe (13) is connected with a gear ring (15), the heat pipe (12) is provided with an output motor (17), the output end of the output motor (17) is connected with a gear (16), and the gear (16) is engaged with the gear ring (15).

8. The automatic plastic forming material supply device with a raw material preheating function according to claim 6, characterized in that: The inner side wall of the heating pipe (13) is provided with a heating groove (18) which spirally extends from one end of the heating pipe (13) to the other end.

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