Vertical type high-position heating infrared heating device

Abstract

The invention discloses a vertical type high-position heating infrared heating device, and belongs to the technical field of automotive trim sheet heating equipment. The device comprises a rack and a heating box body, the heating box body is supported by the rack and vertically arranged at a high position, and a feeding and discharging port is formed in the bottom of the heating box body; the infrared heater is arranged in the heating box body; the lifting mechanism and the material hanging frame are used for bearing sheet materials, the material hanging frame is connected with the lifting mechanism, and the lifting mechanism is used for driving the material hanging frame to do lifting motion and pass through the feeding and discharging port. The problems that in the prior art, traditional equipment is large in occupied area, low in heat efficiency and poor in safety are solved.

Description

Technical Field

[0001] This invention relates to the field of heating equipment for automotive interior sheet materials, and particularly to a vertical, high-position infrared heating device. Background Technology

[0002] With the rapid development of the automotive industry, the manufacturing process requirements for automotive interior parts are becoming increasingly stringent. Sheet materials typically require preheating before hot pressing to improve material plasticity, reduce internal stress, and enhance molding quality and production efficiency. Infrared heating technology, due to its advantages such as high thermal efficiency, fast response speed, and precise temperature control, is widely used in the preheating process of such materials.

[0003] Currently, the most common infrared heating devices for sheet materials are horizontal infrared heating boxes. These devices typically consist of a horizontally placed heating box with multiple infrared heating tubes installed inside. One side of the box has an inlet, and the other side has an outlet. Material is horizontally fed into and out of the heating area via a conveyor belt or guide rail mechanism. However, this layout has several problems, as detailed below.

[0004] 1. Large footprint and low space utilization: The horizontal layout of the heating box requires a large horizontal space, resulting in a long production line layout that cannot meet the layout requirements of a compact production line.

[0005] 2. Poor heating uniformity: Traditional equipment often uses a coarse zone temperature control method, which cannot achieve independent and precise control of each heating tube. This can easily lead to uneven heating of sheet materials, affecting the quality of subsequent hot pressing.

[0006] 3. Insufficient operational safety: The feed inlet and discharge outlet are located in the operator's activity area, and the high-temperature components are not adequately protected, posing a risk of burns; in addition, there is a lack of effective safety locking and descent warning mechanisms for the lifting mechanism, which can easily lead to accidents.

[0007] Therefore, there is an urgent need for a compact, uniformly heated, safe and efficient infrared heating device to meet the higher requirements of modern automotive interior parts production lines for space optimization and human-machine collaboration. Summary of the Invention

[0008] This invention provides a vertical, high-position infrared heating device that can solve the problems of large footprint, low thermal efficiency, and poor safety of traditional equipment in the prior art.

[0009] A vertical, high-position infrared heating device, comprising: The machine frame and the heating chamber are provided. The heating chamber is supported by the machine frame and is erected at a high position. The bottom of the heating chamber is provided with an inlet and outlet. An infrared heater is installed inside the heating chamber. The lifting mechanism and the material hanging frame are provided. The material hanging frame is used to carry sheet materials. The material hanging frame is connected to the lifting mechanism. The lifting mechanism is used to drive the material hanging frame to move up and down and through the inlet and outlet.

[0010] Furthermore, the infrared heater is an infrared mid-wave heater, which includes multiple mid-wave heating tubes arranged parallel to the ground. The heating method of the mid-wave heating tubes for the sheet material is unilateral radiation heating.

[0011] Furthermore, the multiple medium-wave heating tubes are divided into a corresponding number of independent heating temperature zones, each of which is equipped with an independent temperature controller and a time relay.

[0012] Furthermore, the lifting mechanism includes a drive assembly, a guide rail assembly, and a lifting assembly. The guide rail assembly is mounted on the frame and located on both sides of the material hanging frame. One end of the lifting assembly is connected to the top of the material hanging frame, and the other end of the lifting assembly is connected to the drive assembly. The drive assembly drives the lifting assembly to move the material hanging frame vertically along the guide rail assembly.

[0013] Furthermore, the drive assembly includes a cylinder and a fixed pulley assembly, the cylinder is disposed on one side of the frame, and a connecting block is provided at the end of the telescopic rod of the cylinder; The fixed pulley assembly is fixed to the top of the frame. The fixed pulley assembly includes a fixed frame and a first fixed pulley, a second fixed pulley and a third fixed pulley that are sequentially installed on the fixed frame. The guide rail assembly includes a linear guide rail and a slider. The linear guide rail is vertically fixed on the frame and located on both sides of the material hanging frame. The slider is fixedly installed on both sides of the material hanging frame and slides in cooperation with the linear guide rail on both sides. The lifting assembly includes a first chain and a second chain. One end of the first chain and one end of the second chain are respectively connected to the top two ends of the material hanging frame. The other end of the first chain passes through the second fixed pulley and the first fixed pulley in sequence and is connected to the connecting block. The other end of the second chain passes through the third fixed pulley, the second fixed pulley and the first fixed pulley in sequence and is connected to the connecting block.

[0014] Furthermore, it also includes a safety locking mechanism, which is fixedly installed at the bottom of the heating chamber. The safety locking mechanism includes a drive unit and a safety pin. The drive unit is used to drive the safety pin to extend and mechanically lock it after the material hanging frame rises to the heating station.

[0015] Furthermore, the material hanging frame is provided with burr strips for fixing sheet materials.

[0016] Furthermore, a high-temperature cloth is provided on the back of the material hanging frame, which is used to pad and insulate the sheet material.

[0017] Furthermore, it also includes an electronic control system, which comprises: An electrical control cabinet is located on one side of the frame, and a PLC controller is installed inside it; The control box is electrically connected to the electrical control cabinet; The PLC controller is electrically connected to the temperature controller, time relay and lifting mechanism, and is used to control the heating temperature, heating time and the lifting action of the material hanging frame.

[0018] Furthermore, the electrical control system also includes an alarm module, and the PLC controller is configured to: activate the alarm module to issue an audible and visual warning before controlling the material hanging frame to descend back to its original position, and control the material hanging frame to descend.

[0019] The beneficial effects of this invention are: 1. This invention provides a vertical, high-position infrared heating device, comprising a frame and a heating chamber, wherein the heating chamber is supported by the frame and erected vertically, and an inlet / outlet is provided at the bottom of the heating chamber. This invention employs a vertical, high-position design, extending the heating area upwards, fully utilizing vertical space, and significantly reducing the projected area of ​​the equipment on the ground. This makes the device particularly suitable for layout in space-constrained modern compact production lines, improving workshop space utilization and reducing floor space requirements.

[0020] 2. This invention includes a lifting mechanism and a material hanging frame. The material hanging frame is used to carry sheet materials and is connected to the lifting mechanism. The lifting mechanism drives the material hanging frame to move up and down and through the inlet / outlet. The heating chamber, positioned at a mid-to-high level, keeps the main high-temperature area away from the normal operating area, effectively reducing the risk of burns from accidental contact with high-temperature components and improving operational safety. Furthermore, the lifting mechanism automatically feeds the material hanging frame and materials into and out of the heating station, replacing the traditional method of manual pushing or pulling or conveyor belt transport, simplifying the material feeding and discharging process and achieving automated connection.

[0021] 3. In this invention, the infrared heater is located inside the heating chamber. Combined with the high-level, vertically positioned heating chamber, the hot air inside naturally flows upward, which helps to create a uniform temperature field within the chamber. The material is fed into this high-temperature area for heating by a lifting mechanism, reducing heat loss. Compared to traditional horizontal equipment where a large amount of heat is lost when the door is opened, this method offers higher thermal efficiency. Simultaneously, the sheet material is suspended within the chamber, with its heated surface evenly exposed to the radiation range, which is beneficial for achieving uniform heating. Attached Figure Description

[0022] Figure 1 A schematic diagram of a vertical high-position infrared heating device provided by the present invention; Figure 2 A schematic diagram of the internal structure of a vertical high-position infrared heating device provided by the present invention; Figure 3 for Figure 1 Enlarged view of section A in the middle; Figure 4 for Figure 1 Enlarged view of section B; Figure 5 A schematic diagram of the safety locking mechanism.

[0023] Explanation of reference numerals in the attached figures: 1. Frame; 2. Heating chamber; 3. Infrared mid-wave heater; 4. Lifting mechanism; 5. Material hanging frame; 6. Safety locking mechanism; 7. Electrical control cabinet; 8. Control box; 41. Drive assembly; 42. Guide rail assembly; 43. Lifting assembly; 61. Drive unit; 62. Safety pin; 411. Cylinder; 412. Connecting block; 413. First fixed pulley; 414. Second fixed pulley; 415. Third fixed pulley; 416. Fixing frame; 421. Linear guide rail; 422. Slider; 431. First chain; 432. Second chain. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] This invention provides a vertical, high-level infrared heating device for preheating sheet materials in an automotive interior parts hot-pressing production line. The device features a vertical, high-level layout, significantly saving space—more than 80% less than traditional horizontal ovens—making it particularly suitable for compact production line layouts. It achieves efficient material heating through mid-wave infrared radiation and utilizes a lifting mechanism 4 for automated material loading and unloading, offering high heating efficiency and safe operation.

[0026] like Figure 1As shown, the device includes a frame 1, a heating chamber 2, an infrared mid-wave heater 3, a lifting mechanism 4, a material hanging frame 5, and an electrical control system. The frame 1 is welded from high-strength steel and supports the entire heating chamber 2 and the lifting mechanism 4. The heating chamber 2 is a rectangular structure, supported by the frame 1 and erected at a high position, with its bottom at a certain height from the ground (2150mm in this embodiment). The interior of the chamber is lined with high-efficiency heat-insulating material, and the exterior is coated with a conspicuous high-temperature resistant paint to reduce heat loss and warn of high-temperature risks. A rectangular inlet / outlet is provided at the bottom of the chamber for the lifting and passage of the material hanging frame 5. The infrared mid-wave heater 3 is located inside the heating chamber 2 and is used to radiate heat to the sheet material. The material hanging frame 5 carries the sheet material and is connected to the lifting mechanism 4, which drives the material hanging frame 5 to move up and down and through the inlet / outlet. The electrical control system controls the operation of the lifting mechanism 4 and the heating status of the infrared mid-wave heater 3.

[0027] Specifically, the infrared medium-wave heater 3 includes multiple medium-wave heating tubes, with 12 tubes in this embodiment. The 12 medium-wave heating tubes are arranged parallel to the ground and evenly distributed along the height of the enclosure, dividing it into 12 independent heating zones. Each zone corresponds to one heating tube, and each zone is equipped with an independent temperature controller and time relay, which can accurately control the temperature and heating time of different areas, avoiding local overheating or uneven heating of the material. It is suitable for sheet materials of different materials and thicknesses. The medium-wave heating tubes heat the sheet materials by single-sided radiation heating, which can avoid overheating of the back of the material, and is suitable for the process requirements of single-sided preheating of automotive interior parts.

[0028] Specifically, the lifting mechanism 4 includes a drive assembly 41, a guide rail assembly 42, and a lifting assembly 43. The drive assembly 41 is located on one side of the frame 1 and includes a cylinder 411 and a fixed pulley assembly. A connecting block 412 is fixedly connected to the end of the cylinder 411's telescopic rod. The cylinder 411 is equipped with an air shortage protection valve, which maintains its current position even when the air supply is interrupted, preventing the material hanging frame 5 from accidentally falling. The fixed pulley assembly is fixed to the top of the frame 1 and includes a fixed frame 416 and a first fixed pulley 413, a second fixed pulley 414, and a third fixed pulley 415 sequentially installed on the fixed frame 416. The first fixed pulley 413 corresponds to the position of the cylinder 411. The guide rail assembly 42 includes a linear guide rail and a slider 422. The linear guide rail is vertically fixed to the frame 1 and located on both sides of the material hanging frame 5. The slider... 422 is fixedly installed on the bottom of both sides of the material hanging frame 5 and slides in cooperation with the linear guide rails on both sides, thereby driving the material hanging frame 5 to move vertically along the direction of the linear guide rails; one end of the lifting component 43 is connected to the top of the material hanging frame 5, and the other end of the lifting component 43 is connected to the drive component 41. Specifically, it consists of two high-strength chains. One end of the first chain 431 is connected to the top left end of the material hanging frame 5, and the other end passes through the second fixed pulley 414 and the first fixed pulley 413 in sequence before connecting to the connecting block 412; one end of the second chain 432 is connected to the top right end of the material hanging frame 5, and the other end passes through the third fixed pulley 415, the second fixed pulley 414, and the first fixed pulley 413 in sequence before connecting to the connecting block 412. The lifting mechanism 4 cylinder 411 is driven by chain transmission, and the lifting is smooth. The linear guide rails and the slider 422 cooperate to ensure that the material hanging frame 5 does not deviate during the lifting process and avoids collision between the material and the heating tube.

[0029] Specifically, the material hanging frame 5 is a rectangular frame with dimensions matching the sheet material. Multiple rows of burr strips are evenly distributed on the front of the material hanging frame 5 to quickly fix the sheet material without damaging the surface. It is suitable for various material types and improves hanging efficiency. The back of the material hanging frame 5 is equipped with a high-temperature cloth to pad and insulate the material, reducing heat loss to the back. The combination of the burr strips and the high-temperature cloth enables vertical hanging of materials, making vertical heating possible and breaking through the space limitations of traditional horizontal heating. The burr strips and the high-temperature cloth are not shown in the figure.

[0030] To prevent the material hanging frame 5 from falling in the event of a sudden malfunction of the lifting mechanism 4, a safety locking mechanism 6 is also provided. The safety locking mechanism 6 is fixedly installed at the bottom of the heating chamber 2. The safety locking mechanism 6 includes a drive unit 61 and a safety pin. After the material hanging frame 5 rises to the heating position, the drive unit 61 drives the safety pin to extend horizontally, achieving mechanical locking. Furthermore, the safety locking mechanism 6 does not protrude outside the chamber, preventing collisions with operators and complying with safety regulations.

[0031] Specifically, the electrical control system includes an electrical control cabinet 7, a control box 8, and an alarm module. The electrical control cabinet 7 is located on the upper part of the frame 1, away from the drive assembly 41, and integrates a PLC controller. The control box 8 is located on the frame 1 and electrically connected to the electrical control cabinet 7. The control box 8 is at a height suitable for manual operation and is equipped with buttons, indicator lights, and an emergency stop switch. Furthermore, the PLC controller is electrically connected to a temperature controller, a time relay, the cylinder 411 in the lifting mechanism 4, and the alarm module to: control the temperature and heating time of each temperature zone; control the lifting and lowering of the material hanging frame 5, and activate the alarm module 5 seconds before it returns to its original position, issuing an audible and visual warning; control the hanging frame to descend to a certain height above the ground, preferably not less than 650mm, facilitating manual material removal and avoiding collisions with the ground; and support linkage with other equipment on the production line to achieve automated production processes.

[0032] The operating principle of this invention is as follows.

[0033] Material loading stage: The operator hangs the sheet material vertically on the material hanging frame 5 and fixes it with burr strips. The back of the material is attached to the high temperature cloth to ensure that it is firmly fixed.

[0034] Heating preparation: Press the start button on the control box 8. The PLC controller receives the signal and controls the cylinder 411 telescopic rod to retract. The material hanging frame 5 is driven to rise through the chain and pulley group, and rises along the linear guide rail, entering the heating box 2 through the inlet and outlet.

[0035] Locking and Heating: When the material hanging frame reaches the heating station, the safety pin automatically extends to lock the frame. The infrared medium-wave heater 3 starts, and each temperature zone provides unilateral radiant heating to the material according to the set temperature and time. The temperature controller adjusts the temperature in real time, and the time relay controls the heating duration.

[0036] Heating complete: After heating is complete, the PLC activates an audible and visual warning 5 seconds before descent to alert the operator. The safety pin then retracts, and the lifting mechanism 4 controls the material hanging frame to descend smoothly to a height of 650mm from the ground. The heated material is then manually removed, and the next work cycle begins.

[0037] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A vertical, high-position infrared heating device, characterized in that, include: The frame (1) and the heating box (2) are supported by the frame (1) and are erected at a high position. The bottom of the heating box (2) is provided with a material inlet and outlet. An infrared heater is installed inside the heating chamber (2); The lifting mechanism (4) and the material hanging frame (5) are used to carry sheet materials. The material hanging frame (5) is connected to the lifting mechanism (4). The lifting mechanism (4) is used to drive the material hanging frame (5) to move up and down and through the inlet and outlet.

2. The vertical high-position infrared heating device as described in claim 1, characterized in that, The infrared heater is an infrared mid-wave heater (3). The infrared mid-wave heater (3) includes multiple mid-wave heating tubes. The multiple mid-wave heating tubes are arranged parallel to the ground. The mid-wave heating tubes heat the sheet material by unilateral radiation heating.

3. The vertical high-position infrared heating device as described in claim 2, characterized in that, The multiple medium-wave heating tubes are divided into a corresponding number of independent heating temperature zones, and each heating temperature zone is equipped with an independent temperature controller and time relay.

4. The vertical high-position infrared heating device as described in claim 1, characterized in that, The lifting mechanism (4) includes a drive assembly (41), a guide rail assembly (42), and a lifting assembly (43). The guide rail assembly (42) is mounted on the frame (1) and located on both sides of the material hanging frame (5). One end of the lifting assembly (43) is connected to the top of the material hanging frame (5), and the other end of the lifting assembly (43) is connected to the drive assembly (41). The drive assembly (41) drives the lifting assembly (43) to move the material hanging frame (5) vertically along the guide rail assembly (42).

5. The vertical high-position infrared heating device as described in claim 4, characterized in that, The drive assembly (41) includes a cylinder (411) and a fixed pulley assembly. The cylinder (411) is located on one side of the frame (1), and a connecting block (412) is provided at the end of the telescopic rod of the cylinder (411). The fixed pulley assembly is fixed to the top of the frame (1). The fixed pulley assembly includes a fixed frame (416) and a first fixed pulley (413), a second fixed pulley (414) and a third fixed pulley (415) installed sequentially on the fixed frame (416). The guide rail assembly (42) includes a linear guide rail and a slider (422). The linear guide rail is vertically fixed on the frame (1) and located on both sides of the material hanging frame (5). The slider (422) is fixedly installed on both sides of the material hanging frame (5) and slides in cooperation with the linear guide rails on both sides. The lifting assembly (43) includes a first chain (431) and a second chain (432). One end of the first chain (431) and one end of the second chain (432) are respectively connected to the top two ends of the material hanging frame (5). The other end of the first chain (431) passes through the second fixed pulley (414) and the first fixed pulley (413) in sequence and is connected to the connecting block (412). The other end of the second chain (432) passes through the third fixed pulley (415), the second fixed pulley (414) and the first fixed pulley (413) in sequence and is connected to the connecting block (412).

6. The vertical high-position infrared heating device as described in claim 1, characterized in that, It also includes a safety locking mechanism (6), which is fixedly installed at the bottom of the heating box (2). The safety locking mechanism (6) includes a drive unit (61) and a safety pin. The drive unit (61) is used to drive the safety pin to extend and mechanically lock it after the material hanging frame (5) rises to the heating station.

7. The vertical high-position infrared heating device as described in claim 1, characterized in that, The material hanging frame (5) is provided with burr strips for fixing sheet materials.

8. The vertical high-position infrared heating device as described in claim 1 or 7, characterized in that, The back of the material hanging frame (5) is provided with a high-temperature cloth, which is used to pad and insulate the sheet material.

9. The vertical high-position infrared heating device as described in claim 3, characterized in that, It also includes an electronic control system, which comprises: An electrical control cabinet (7) is located on one side of the frame (1), and a PLC controller is installed inside it; The control box (8) is electrically connected to the electrical control cabinet (7); The PLC controller is electrically connected to the temperature controller, time relay and lifting mechanism (4) to control the heating temperature, heating time and the lifting action of the material hanging frame (5).

10. The vertical high-position infrared heating device as described in claim 9, characterized in that, The electrical control system also includes an alarm module. The PLC controller is configured to activate the alarm module to issue an audible and visual warning before controlling the material hanging frame (5) to descend back to its original position, and to control the material hanging frame (5) to descend.

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