Automatic temperature control device

Abstract

The utility model discloses an automatic temperature control device which comprises a plastic extruding machine body, a heating structure is arranged on the outer wall of the plastic extruding machine body, the heating structure comprises containing cavities symmetrically formed in the two sides of the plastic extruding machine body, heating electric wires are installed in the containing cavities, and the heating electric wires are of a spiral structure and are arranged in the containing cavities in a surrounding mode. The plastic extruding machine comprises a plastic extruding machine body, two accommodating cavities are formed in the outer wall of the plastic extruding machine body, an inwards-sunken mounting groove is formed in an opening of each accommodating cavity, an arc-shaped cover plate is mounted in each mounting groove, and a mounting strip is fixedly connected to the position, located between the two accommodating cavities, of the outer wall of the plastic extruding machine body. According to the plastic extruding machine, the inner portion of the plastic extruding machine body is heated evenly, the temperature control effect of plastic melt is improved, the heat conduction layer is beneficial for conducting the temperature of the heating electric wire into the plastic extruding machine, the timeliness of temperature control is improved, the protective cover frame and the heat preservation layer are arranged, temperature loss is relieved, and therefore the effect of reducing energy consumption is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature control of extruders, in particular to an automatic temperature control device. Background Art

[0002] Extruder is an important plastic machine. Most of the production and manufacturing of plastic products can be achieved by extrusion molding. The extruder motor is an important part of the extruder and is the prime mover of the extruder, providing the large thrust required by the extruder screw. Extrusion molding is one of the main processing methods for plastic molding, and most thermoplastics can be processed by this method. The process of plastic extrusion molding is as follows: Powdered or granular plastic is added to the extruder barrel and heated and melted to make it in a viscous flow state. Under the action of the extruder extrusion system, it passes through a die with a shape similar to the cross-section of the product to become a viscous flow melt with a shape similar to the die. After cooling and shaping, a plastic product with a certain geometric shape and size is formed.

[0003] After searching, Chinese patent announcement number: CN213733330U discloses a novel twin-screw extruder automatic temperature control device, wherein a plastic inlet is fixedly provided on the top of the extruder body, an extrusion chamber is fixedly provided on the top of the plastic inlet, a drive chamber is fixedly provided on the right side of the extrusion chamber, a discharge port is fixedly provided on the left end of the extrusion chamber, a discharge shaper is fixedly provided on the left end of the discharge port, a motor, a first gear, a second gear and a third gear are fixedly provided in the inner cavity of the drive chamber, and a first screw and a second screw are fixedly installed in the middle part of the inner cavity of the extrusion chamber.

[0004] The above technology can control the temperature inside the extruder, but there are still some shortcomings. The heating layer is only located in an area inside the extruder, resulting in unsatisfactory heating uniformity of the plastic melt, which can easily affect the quality of plastic products. In addition, the lack of insulation structure causes rapid heat loss, resulting in greater energy consumption. Utility Model Content

[0005] 1. Technical problems to be solved by the utility model

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an automatic temperature control device, aiming to solve the problems in the prior art of poor heating uniformity, which easily affects the quality of plastic products, lacks a thermal insulation structure, causes rapid heat loss, and causes greater energy consumption.

[0007] 2. Technical solution

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] An automatic temperature control device includes an extruder body, wherein the outer wall of the extruder body is provided with a heating structure, wherein the heating structure includes accommodating cavities symmetrically opened on both sides of the extruder body, wherein a heating wire is installed in the accommodating cavity, wherein the heating wire is a spiral structure and surrounds the accommodating cavity, wherein an inwardly recessed mounting groove is opened at the opening of the accommodating cavity, wherein an arc-shaped cover plate is installed in the mounting groove, wherein a mounting strip is fixedly connected to the outer wall of the extruder body and located between the two accommodating cavities, wherein connecting ear plates are fixedly connected to both ends of the arc-shaped cover plate, wherein the connecting ear plates are fixedly connected to the mounting strip by bolts, wherein an insulation structure is sleeved on the outer side of the arc-shaped cover plate, wherein the insulation structure is used to alleviate temperature loss.

[0010] Preferably, a heat-conducting layer is embedded and installed on the inner wall of the extruder body at the heating wire.

[0011] Preferably, the heat-insulating structure comprises two symmetrically arranged shield frames, a heat-insulating layer is embedded and installed inside the shield frames, and the shield frames are fixedly connected to the mounting bars by bolts.

[0012] Preferably, an escape groove is provided at the end of the shield frame, and the escape groove is used to accommodate the mounting strip and the connecting ear plate.

[0013] Preferably, a temperature sensor is installed on one side of the extruder body.

[0014] Preferably, a twin-screw structure is installed inside the extruder body, a driving member for driving the twin-screw structure is installed on one side of the extruder body, and a plastic feed hopper is fixedly connected to one side of the extruder body.

[0015] Preferably, a discharge port is provided on a side of the extruder body away from the plastic feed hopper, and a discharge shaper is detachably mounted at the discharge port.

[0016] Preferably, support plates are fixedly connected to both sides of the bottom of the extruder body, and the bottoms of the two support plates are fixedly connected to the same workbench.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] (1) The utility model provides a heating structure and a heat-insulating structure, and uses a temperature sensor to observe and control the temperature inside the extruder, thereby controlling the heating wire to heat the machine and controlling the temperature inside the extruder to ensure that the plastic melt is in a good state. The heating wire is a spiral structure, so that the inside of the extruder body is heated evenly, thereby improving the temperature control effect of the plastic melt. The heat-conducting layer helps to transfer the temperature of the heating wire to the inside of the extruder, thereby improving the timeliness of the temperature control. The protective cover frame and the heat-insulating layer help to alleviate temperature loss, thereby reducing energy consumption.

[0020] (2) The utility model has a removable arc cover, and the shield frame and the mounting strip are removable, which is convenient for the maintenance of the heating wire, improves the maintenance efficiency, and ensures the production efficiency. When the insulation layer is damaged and fails, it can be quickly replaced. The structure is simple and the practicability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the automatic temperature control device;

[0022] Figure 2 Schematic diagram of the partial structure of the automatic temperature control device Figure 1 ;

[0023] Figure 3 Schematic diagram of the partial structure of the automatic temperature control device Figure 2 ;

[0024] Figure 4 It is a top view of the extruder body.

[0025] In the figure: 1. Extruder body; 2. Support plate; 3. Workbench; 4. Twin-screw structure; 5. Driving part; 6. Plastic feed hopper; 7. Discharge port; 8. Discharge shaper; 9. Temperature sensor; 10. Mounting strip; 11. Arc cover plate; 12. Connecting ear plate; 13. Accommodating cavity; 14. Heating wire; 15. Protective cover frame; 16. Insulation layer; 17. Heat-conducting layer. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction 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 of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Example

[0027] See also Figure 1-Figure 4The present embodiment provides an automatic temperature control device, including an extruder body 1, a twin-screw structure 4 is installed inside the extruder body 1, and a driving member 5 for driving the twin-screw structure 4 is installed on one side of the extruder body 1. The twin-screw structure 4 and the driving member 5 are prior arts and will not be described in detail herein. A plastic feed hopper 6 is fixedly connected to one side of the extruder body 1, and a discharge port 7 is provided on the side of the extruder body 1 away from the plastic feed hopper 6. A discharge shaper 8 is detachably installed at the discharge port 7, and the extruded plastic is shaped into different shapes by the discharge shaper 8. Support plates 2 are fixedly connected to both sides of the bottom of the extruder body 1, and the bottoms of the two support plates 2 are fixedly connected to the same workbench 3. The extruder body 1 is stably supported by the support plates 2 and the workbench 3. A heating structure is provided on the outer wall of the extruder body 1, and a heat preservation structure is provided on the outer side of the heating structure. The heating structure is used to heat the plastic melt inside the extruder body 1 to prevent the plastic from cooling prematurely and affecting the quality. The heat preservation structure can alleviate temperature loss and reduce energy consumption.

[0028] As an implementation method of this embodiment, Figure 3 and Figure 4 As shown, the heating structure includes a receiving cavity 13 symmetrically opened on both sides of the extruder body 1, a heating wire 14 is installed in the receiving cavity 13, the heating wire 14 is a spiral structure and surrounds the receiving cavity 13, and a heat-conducting layer 17 is embedded and installed on the inner wall of the extruder body 1 at the heating wire 14. A temperature sensor 9 is installed on one side of the extruder body 1. The temperature sensor 9 and the heating wire 14 are electrically connected to the power supply module and the controller of the extruder body 1. The temperature sensor 9 can be used to observe and control the temperature inside the extruder. When the temperature is too high or too low, the temperature sensor 9 generates a signal to transmit to the controller, and the controller issues an instruction to control the heating wire 14 to heat, thereby controlling the temperature inside the extruder and ensuring the good state of the plastic melt. The heating wire 14 is a spiral structure, so that the inside of the extruder body 1 is heated evenly, thereby improving the temperature control effect of the plastic melt. The heat conductive layer 17 is provided, and the material of the heat conductive layer 17 can be copper, aluminum, indium-based alloy, etc., which helps to conduct the temperature of the heating wire 14 to the inside of the extruder and improve the timeliness of the temperature control.

[0029] In this embodiment, if Figure 2As shown, an inwardly recessed mounting groove is provided at the opening of the accommodating cavity 13, and an arc-shaped cover plate 11 is installed in the mounting groove. A mounting strip 10 is fixedly connected to the outer wall of the extruder body 1 and located between the two accommodating cavities 13. Connecting ear plates 12 are fixedly connected to both ends of the arc-shaped cover plate 11, and the connecting ear plates 12 and the mounting strip 10 are fixedly connected by bolts. Of course, in other embodiments, other detachable modes of the arc-shaped cover plate 11 and the mounting strip 10 also fall within the protection scope of the present utility model. The arc-shaped cover plate 11 is used to cover the heating wire 14 in the accommodating cavity 13 to provide protection, and the arc-shaped cover plate 11 is detachably installed, which facilitates the maintenance and processing of the heating wire 14, improves the maintenance efficiency, and ensures the production efficiency.

[0030] As an implementation method of this embodiment, Figure 1 and Figure 2 As shown, the thermal insulation structure includes two symmetrically arranged shield frames 15, and an insulation layer 16 is embedded and installed inside the shield frame 15. The insulation layer 16 can be a rock wool board, a glass wool board, etc. The shield frame 15 is fixedly connected to the mounting bar 10 by bolts. Of course, in other embodiments, other detachable modes of the shield frame 15 and the mounting bar 10 also belong to the protection scope of the utility model. An avoidance groove is opened at the end of the shield frame 15, and the avoidance groove is used to accommodate the mounting bar 10 and the connecting ear plate 12. The shield frame 15 and the insulation layer 16 are arranged to help alleviate temperature loss, thereby reducing energy consumption. In addition, the shield frame 15 and the mounting bar 10 are detachable and installed, so that the shield frame 15 can be removed when the heating wire 14 is repaired, and when the insulation layer 16 is damaged and fails, it can be quickly replaced. The structure is simple and the practicability is high.

[0031] Working principle: When in use, the temperature inside the extruder is well observed and controlled through the temperature sensor 9. When the temperature is too high or too low, the temperature sensor 9 generates a signal and transmits it to the controller. The controller issues an instruction to control the heating wire 14 to work for heating, control the temperature inside the extruder, and ensure the good state of the plastic melt. The heating wire 14 is a spiral structure, so that the inside of the extruder body 1 is heated evenly, and the temperature control effect of the plastic melt is improved. The heat conductive layer 17 is provided to help the temperature of the heating wire 14 to be transferred to the inside of the extruder, thereby improving the timeliness of the temperature control. The shield frame 15 and the insulation layer 16 are provided to help alleviate temperature loss, thereby reducing energy consumption. The arc cover plate 11 is detachably installed, and the shield frame 15 and the mounting strip 10 are detachably installed, which is convenient for the maintenance and processing of the heating wire 14, improves the maintenance efficiency, and ensures the production efficiency. When the insulation layer 16 is damaged and fails, it can be quickly replaced. The structure is simple and the practicability is high.

[0032] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. An automatic temperature control device, comprising an extruder body (1), characterized in that: The outer wall of the extruder body (1) is provided with a heating structure, and the heating structure comprises accommodating cavities (13) symmetrically opened on both sides of the extruder body (1), a heating wire (14) is installed in the accommodating cavity (13), and the heating wire (14) is a spiral structure and surrounds the accommodating cavity (13), and an inwardly recessed installation groove is opened at the opening of the accommodating cavity (13), and an arc-shaped cover plate (11) is installed in the installation groove, and the outer wall of the extruder body (1) and between the two accommodating cavities (13) are fixedly connected with a mounting strip (10), and both ends of the arc-shaped cover plate (11) are fixedly connected with connecting ear plates (12), and the connecting ear plates (12) are fixedly connected to the mounting strip (10) by bolts, and the outer side of the arc-shaped cover plate (11) is sleeved with a heat preservation structure, and the heat preservation structure is used to alleviate temperature loss.

2. An automatic temperature control device according to claim 1, characterized in that: A heat-conducting layer (17) is embedded and installed on the inner wall of the extruder body (1) at the location of the heating wire (14).

3. The automatic temperature control device according to claim 1, characterized in that: The heat-insulating structure comprises two symmetrically arranged shield frames (15), a heat-insulating layer (16) is embedded and installed inside the shield frames (15), and the shield frames (15) are fixedly connected to the mounting bars (10) by means of bolts.

4. An automatic temperature control device according to claim 3, characterized in that: An escape groove is provided at the end of the shield frame (15), and the escape groove is used to accommodate the mounting strip (10) and the connecting ear plate (12).

5. The automatic temperature control device according to claim 1, characterized in that: A temperature sensor (9) is installed on one side of the extruder body (1).

6. The automatic temperature control device according to claim 1, characterized in that: A twin-screw structure (4) is installed inside the extruder body (1), a driving member (5) for driving the twin-screw structure (4) is installed on one side of the extruder body (1), and a plastic feed hopper (6) is fixedly connected to one side of the extruder body (1).

7. An automatic temperature control device according to claim 6, characterized in that: A discharge port (7) is provided on a side of the extruder body (1) away from the plastic feed hopper (6), and a discharge shaper (8) is detachably mounted on the discharge port (7).

8. The automatic temperature control device according to claim 1, characterized in that: Support plates (2) are fixedly connected to both sides of the bottom of the extruder body (1), and the bottoms of the two support plates (2) are fixedly connected to the same workbench (3).

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