A preheating device
By introducing a multi-zone independent temperature control system into the preheating device, and using the feedback control of the constant temperature plate and heating tube combined with thermocouples, the problem of uneven preheating was solved, achieving efficient and precise temperature control and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUMIDA ELECTRIC GUANGXI CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-06-05
AI Technical Summary
The existing preheating equipment lacks independent control functions for multiple temperature zones, resulting in low temperature control accuracy, uneven preheating, and reduced production efficiency.
The preheating device adopts independent temperature control for multiple temperature zones. The flow into the belt is driven by the conveyor belt motor. Combined with the constant temperature plate, heating element and thermocouple, it realizes independent control of multiple temperature zones. The thermocouple detects the temperature in real time and feeds it back to the controller to control the power supply of the heating element to maintain a constant temperature.
It achieves independent temperature control in multiple temperature zones, improving temperature control accuracy and preheating uniformity, increasing production efficiency and reducing energy waste.
Smart Images
Figure CN224327575U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of preheating devices, and more particularly to a preheating device. Background Technology
[0002] In industrial production, fixture preheating is a crucial step in ensuring product quality. Existing preheating devices suffer from the following problems: lack of independent multi-temperature zone control, low temperature control accuracy leading to uneven preheating and impacting production efficiency. Therefore, there is an urgent need for a highly efficient, safe preheating device with precise multi-temperature zone control. Utility Model Content
[0003] The purpose of this invention is to provide a preheating device to solve existing technical problems.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A preheating device includes a conveyor belt motor, a main belt roller, a driven belt roller, a belt mounting frame, a preheating component, an inflow belt, a driven pulley, and a driving pulley. The main belt roller and the driven belt roller are respectively disposed at both ends of the belt mounting frame. The inflow belt is wound around the main belt roller and the driven belt roller. The conveyor belt motor is connected to the driving pulley through a gearbox. The driving pulley is connected to the driven pulley through a belt. The main belt roller is connected to the driven pulley. The preheating component is disposed above one end of the inflow belt. The other end of the inflow belt is provided with a belt inlet.
[0006] The preheating component includes at least two independent temperature zones. Each temperature zone is equipped with a constant temperature plate, a heating element, and a thermocouple. The temperature sensing ends of the thermocouples are embedded in preset holes in the constant temperature plate, and the heating elements are embedded or attached to the interior or surface of the constant temperature plate.
[0007] Furthermore, the conveyor belt motor is located at one end of the belt mounting bracket and is positioned below the main belt roller.
[0008] Furthermore, preheating component mounting brackets are provided on both sides of the belt mounting bracket, and the preheating component is mounted on the preheating component mounting bracket.
[0009] Furthermore, a fixture positioning sensor is provided at one end of the belt mounting frame, the fixture positioning sensor is located below the preheating component, and a discharge port is provided on one side of one end of the belt mounting frame.
[0010] Furthermore, the preheating component also includes a temperature zone baffle and a temperature zone shell. The temperature zone baffle is disposed at the bottom end of the temperature zone shell and is connected to the preheating component mounting bracket. The constant temperature plate is disposed in the middle of the bottom end of the temperature zone shell and is disposed inside the temperature zone baffle.
[0011] Furthermore, the heating tubes are respectively installed through the temperature zone baffles, so that one end of the heating tubes is embedded or attached to the inside or surface of the constant temperature plate, and a protective sleeve is provided between the heating tubes and the temperature zone baffles. One end of the thermocouples is respectively installed through the middle of the temperature zone shell.
[0012] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:
[0013] In this invention, the preheating fixture enters the preheating component from the belt feed port via the inlet and flows into the lower part of the preheating assembly. The heating tubes in the independent temperature zones heat the constant temperature plate, and the temperature of the constant temperature plate is detected in real time by thermocouples. This achieves independent control of multiple temperature zones, high temperature control accuracy, uniform preheating, and improved production efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the preheating device of this utility model. Figure 1 ;
[0015] Figure 2 This is a schematic diagram of the preheating device of this utility model. Figure 2 ;
[0016] Figure 3 This is a bottom schematic diagram of the preheating component of this utility model;
[0017] Figure 4 This is a side view of the preheating component of this utility model;
[0018] Figure 5 This is a schematic diagram of the preheating component of this utility model.
[0019] In the attached diagram, 1-conveyor motor, 2-gearbox, 3-main belt roller, 4-preheating assembly, 5-inflow belt, 6-preheating assembly mounting bracket, 7-belt inlet, 8-preheating fixture, 9-fixture position sensor, 10-driven wheel, 11-belt, 12-drive wheel, 13, 14-thermal plate, 15, 16-heating tube, 17, 18-thermocouple, 19-temperature zone baffle, 20-temperature zone housing, 21-driven belt roller, 22-belt mounting bracket, 23-outlet, 24-protective sleeve. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of this utility model, and these aspects can be achieved even without these specific details.
[0021] like Figure 1-2 As shown, a preheating device includes a conveyor belt motor 1, a main belt roller 3, a driven belt roller 21, a belt mounting frame 22, a preheating assembly 4, an inflow belt 5, a driven pulley 10, and a driving pulley 12. The main belt roller 3 and the driven belt roller 21 are respectively disposed at both ends of the belt mounting frame 22. The inflow belt 5 is wound around the main belt roller 3 and the driven belt roller 21. The rotation of the main belt roller 3 and the driven belt roller 21 drives the inflow belt 5. The conveyor belt motor 1 is connected to the driving pulley 12 through a gearbox 2. The gearbox 2 is used to control the motor speed and increase the motor torque. The driving pulley 12 is connected to the driven pulley 10 through a belt 11. The main belt roller 3 and the driven pulley 10... The preheating component 4 is located above one end of the inflow belt 5. The preheating component 4 is used to preheat the preheating fixture. The other end of the inflow belt 5 is provided with a belt inlet 7 for feeding. In use, the conveyor belt motor 1 is started, which drives the gearbox 2 to increase its torque and slow down its speed, and drives the drive wheel 12 to rotate. The drive wheel 12 drives the driven wheel 10 to rotate through the belt 11, thereby causing the main belt roller 3 to rotate, which in turn drives the inflow belt 5 to run. The preheating fixture 8 enters the preheating area below the preheating component 4 from the belt inlet 7 through the inflow belt 5. The preheating component 4 preheats the preheating fixture 8, which is used to load the products.
[0022] like Figure 3-4As shown, the preheating component 4 includes at least two independent temperature zones. Each temperature zone is equipped with constant temperature plates 13 and 14, heating elements 15 and 16, and thermocouples 17 and 18. The temperature-sensing ends of thermocouples 17 and 18 are embedded in preset holes in constant temperature plates 13 and 14, respectively, and are fixed with high-temperature adhesive or threads to ensure tight contact with the surface of the constant temperature plates. Thermocouples 17 and 18 detect the temperature of the temperature zones where constant temperature plates 13 and 14 are located. Heating elements 15 and 16 are embedded or attached to the interior or surface of constant temperature plates 13 and 14, respectively, and heat the constant temperature plates 13 and 14. A control relay is provided between the heating elements 15 and 16 and the power supply. The coil terminals of the control relay are connected to the output terminal of the controller. Thermocouples 17 and 18 are connected to the input terminal of the controller. The heating elements are connected in parallel, with one heating element corresponding to one control relay. The controller and control relay are existing technologies. After being heated by heating element 15, the constant temperature plate 13 absorbs heat, resulting in good temperature retention and uniform temperature across the entire temperature zone. Similarly, after being heated by heating element 16, the constant temperature plate 14 absorbs heat, further ensuring good temperature retention and uniform temperature across the entire temperature zone. During use, heating elements 15 and 16 are energized to preheat the temperature zones of constant temperature plates 13 and 14 according to the set temperature requirements. Thermocouples 17 and 18 monitor the temperatures of constant temperature plates 13 and 14. When the temperature exceeds the set temperature, feedback is sent to the controller, which then stops energizing heating elements 15 and 16, halting preheating of constant temperature plates 13 and 14. When the temperature of constant temperature plates 13 and 14 falls below the set temperature, the external controller re-energizes heating elements 15 and 16, thus achieving preheating. This invention reduces energy waste and improves preheating efficiency through multi-zone independent temperature control and closed-loop regulation.
[0023] In this embodiment of the invention, the conveyor belt motor 1 is located at one end of the belt mounting frame 22, connected to the belt mounting frame 22, and positioned below the main belt roller 3. The conveyor belt motor 1 drives the main belt roller 3 to rotate, thereby facilitating the flow of the belt. Preheating component mounting frames 6 are located on both sides of the belt mounting frame 22, and are connected to the belt mounting frame 22. The preheating component 4 is mounted on and connected to the preheating component mounting frame 6. A fixture positioning sensor 9 is located at one end of the belt mounting frame 22, positioned below the preheating component 4. The fixture positioning sensor 9 senses the positioning of the preheating fixture. A discharge port 23 is located on one side of one end of the belt mounting frame 22. After heating, once the fixture positioning sensor 9 detects the preheating fixture, an external device pushes the preheating fixture out of the discharge port 23.
[0024] like Figure 3-5 As shown, the preheating component 4 also includes a temperature zone baffle 19 and a temperature zone outer shell 20. The temperature zone baffle 19 is disposed at the bottom end of the temperature zone outer shell 20 and is connected to the preheating component mounting bracket 6. The temperature zone baffle 19 provides insulation for the temperature zone. The constant temperature plates 13 and 14 are disposed in the middle of the bottom end of the temperature zone outer shell 20 and are located inside the temperature zone baffle 19. The temperature zone baffle 19 surrounds the constant temperature plates 13 and 14 and is fixed to the temperature zone outer shell 20 by bolts or clips, forming a preheating cavity with the preheating component mounting bracket 6 and the inflow belt 5. A gap can be provided between the temperature zone baffle and the constant temperature plates to fill with high-temperature resistant insulation cotton, further reducing heat loss and ensuring temperature uniformity in the temperature zone. The heating elements 15 and 16 are respectively installed through the temperature zone baffle 19, with one end of the heating elements 15 and 16 embedded or attached to the interior or surface of the constant temperature plates 13 and 14, ensuring that the heat generated by the heating elements is directly conducted to the constant temperature plates. Furthermore, the heating elements and the constant temperature plates can be connected by high-temperature resistant slots or welding to achieve efficient heat transfer. A protective sleeve 24 is provided between the heating elements 15 and 16 and the temperature zone baffle 19, and one end of the thermocouples 17 and 18 are respectively installed through the middle of the temperature zone outer shell 20. Thermocouples 17 and 18 are symmetrically arranged to monitor the average temperature within the temperature zone in real time.
[0025] Working principle
[0026] The conveyor belt motor 1 is started, driving the gearbox 2 to increase torque and slow down the speed, and driving the drive wheel 12 to rotate. The drive wheel 12 drives the driven wheel 10 to rotate through the belt 11, thereby causing the main belt roller 3 to rotate, which in turn drives the inflow belt 5 to run, so that the preheating fixture 8 enters the preheating area below the preheating component 4 from the belt inlet 7 through the inflow belt 5. The heating tubes 15 and 16 are energized, and the temperature zone where the constant temperature plates 13 and 14 are located is preheated according to the temperature requirements of the temperature zone. Thermocouples 17 and 18 detect the temperature of the constant temperature plates 13 and 14 respectively. When the temperature exceeds the set temperature, it is fed back to the external controller. The external controller stops the power supply to the heating tubes 15 and 16, and the constant temperature plates 13 and 14 stop preheating. When the temperature of the constant temperature plates 13 and 14 is lower than the set temperature, the external controller energizes the heating tubes 15 and 16, thereby realizing cyclic preheating.
[0027] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A preheating device, characterized in that: The system includes a conveyor belt motor (1), a main belt roller (3), a driven belt roller (21), a belt mounting frame (22), a preheating assembly (4), an inflow belt (5), a driven wheel (10), and a driving wheel (12). The main belt roller (3) and the driven belt roller (21) are respectively located at both ends of the belt mounting frame (22). The inflow belt (5) is wound around the main belt roller (3) and the driven belt roller (21). The conveyor belt motor (1) is connected to the driving wheel (12) through a gearbox (2). The driving wheel (12) is connected to the driven wheel (10) through a belt (11). The main belt roller (3) is connected to the driven wheel (10). The preheating assembly (4) is located above one end of the inflow belt (5). The other end of the inflow belt (5) is provided with a belt inlet (7). The preheating component (4) includes at least two independent temperature zones. Each temperature zone is provided with a constant temperature plate (13, 14), a heating element (15, 16), and a thermocouple (17, 18). The temperature sensing ends of the thermocouples (17, 18) are respectively embedded in the preset holes of the constant temperature plate (13, 14), and the heating elements (15, 16) are respectively embedded or attached to the interior or surface of the constant temperature plate (13, 14).
2. The preheating device according to claim 1, characterized in that: The conveyor belt motor (1) is located at one end of the belt mounting bracket (22) and is located below the main belt roller (3).
3. The preheating device according to claim 1, characterized in that: The belt mounting bracket (22) is provided with preheating component mounting brackets (6) on both sides, and the preheating component (4) is mounted on the preheating component mounting bracket (6).
4. A preheating device according to claim 1, characterized in that: One end of the belt mounting bracket (22) is provided with a fixture positioning sensor (9), which is located below the preheating component (4). A discharge port (23) is provided on one side of one end of the belt mounting bracket (22).
5. A preheating device according to claim 1, characterized in that: The preheating component (4) also includes a temperature zone baffle (19) and a temperature zone shell (20). The temperature zone baffle (19) is disposed on the bottom end of the temperature zone shell (20) and is connected to the preheating component mounting bracket (6). The constant temperature plates (13, 14) are disposed in the middle of the bottom end of the temperature zone shell (20) and are disposed inside the temperature zone baffle (19).
6. A preheating device according to claim 5, characterized in that: The heating tubes (15, 16) are respectively installed through the temperature zone baffle (19), so that one end of the heating tubes (15, 16) is embedded or attached to the inside or surface of the constant temperature plate (13, 14), and a protective sleeve (24) is provided between the heating tubes (15, 16) and the temperature zone baffle (19). One end of the thermocouples (17, 18) is respectively installed through the middle of the temperature zone shell (20).