Safe and durable tunnel type heating device

Abstract

The utility model discloses a safe and durable tunnel type heating device which comprises a conveying belt and a heating device, the heating device is arranged above the conveying belt, and a supporting plate is arranged below the conveying belt. The heating device comprises a heater, and a sensor is arranged between the heater and the conveying belt; the supporting plate comprises a supporting plate body not making contact with the conveying belt, and supporting plates making contact with the conveying belt are arranged at the two ends, in the conveying direction of the conveying belt, of the supporting plate body correspondingly. The sensor is a correlation type grating sensor. The device is reasonable in structural design, can prevent a workpiece from being contacted with the heater to cause a fire behavior, and improves the safety; and meanwhile, friction of the conveying belt in the conveying process is reduced, and the use durability of the conveying belt is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating, in particular to a safe and durable tunnel heating device. Background Art

[0002] Tunnel-type heating devices are widely used in various industrial productions such as thermal transfer and food. Since the heater of the heating device will generate a temperature higher than the normal heating temperature of the workpiece, there is a great risk of fire when the workpiece directly contacts the heater.

[0003] Especially in the thermal transfer process, the thermal transfer film is a flammable material. During the process of the powder shaking and color fixing machine heating and melting the hot melt powder on the thermal transfer film pattern, if there is an abnormality in the conveyor belt, abnormal winding, or maintenance, the transfer film will be deformed by the heat and may move abnormally, causing the thermal transfer film to directly contact the heater, thereby causing a fire.

[0004] Therefore, there is an urgent need to design a safe and durable tunnel heating device that can achieve fast and efficient automatic cleaning. Utility Model Content

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A safe and durable tunnel heating device comprises a conveyor belt and a heating device, wherein the heating device is arranged above the conveyor belt, and a support plate is arranged below the conveyor belt;

[0007] The heating device includes a heater, and a sensor is provided between the heater and the conveyor belt;

[0008] The support plate includes a support plate main body that does not contact the conveyor belt, and support plates that contact the conveyor belt are respectively provided at both ends of the support plate main body in the conveying direction of the conveyor belt.

[0009] Preferably, the sensor is a through-beam grating sensor.

[0010] Preferably, the conveyor belt is a mesh-shaped thin-walled structure, and a negative pressure port is provided on the support plate, and the negative pressure port is connected to a negative pressure generator.

[0011] Preferably, there are several negative pressure ports arranged in an array.

[0012] Preferably, a negative pressure box is provided below the negative pressure port, and the negative pressure box is a thin-walled hollow structure. An air extraction port is provided on one side of the negative pressure box, and the air extraction port is connected to the negative pressure generator.

[0013] Preferably, the conveyor belt is made of Teflon.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The reasonable structural design can prevent the workpiece from contacting the heater and causing fire, thereby improving safety; at the same time, it can improve the durability of the conveyor belt by reducing the friction of the conveyor belt during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a top view of the pallet;

[0018] Figure 3 for Figure 2 AA cross-sectional view;

[0019] Figure 4 for Figure 3 B is a partial enlarged view of .

[0020] Among them: conveyor belt 10, heating device 20, heater 21, sensor 30, support plate 40, support plate body 41, negative pressure box 42, support plate 43, negative pressure port 44, exhaust port 45, workpiece 50. DETAILED DESCRIPTION

[0021] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to facilitate a more thorough and comprehensive understanding of the disclosure of the present invention.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] Below, the present invention is further described with reference to the accompanying drawings and specific embodiments:

[0025] like Figure 1-4 As shown, a safe and durable tunnel heating device includes a conveyor belt 10 and a heating device 20, wherein the heating device 20 is arranged above the conveyor belt 10, and a support plate 40 is arranged below the conveyor belt 10;

[0026] The heating device 20 includes a heater 21 , and a sensor 30 is provided between the heater 21 and the conveyor belt 10 ;

[0027] The support plate 40 includes a support plate body 41 that does not contact the conveyor belt 10 , and support plates 43 that contact the conveyor belt 10 are respectively provided at both ends of the support plate body 41 in the conveying direction of the conveyor belt 10 .

[0028] In this embodiment, the workpiece 50 is a thermal transfer film, which is a flammable material. In the actual production process, such as abnormal winding or shutdown maintenance, the thermal transfer film may move abnormally and come into contact with the heater 21. The high temperature of the heater 21 will cause the thermal transfer film to burn and cause a fire. The present application sets a sensor 30 between the heater 21 and the conveyor belt 10 to avoid fire caused by contact between the thermal transfer film and the heater 21.

[0029] In this embodiment, the conveyor belt 10 does not contact the support plate body 41 , but only contacts the support plates 43 at both ends, thereby reducing the friction of the conveyor belt 10 during the transmission process and improving the durability of the conveyor belt 10 .

[0030] Furthermore, in order to ensure the accuracy of the sensor 30 in monitoring the proximity of the workpiece 50 to the heater 21 , the sensor 30 is a through-beam grating sensor.

[0031] Furthermore, in order to make the workpiece 50 close to the conveyor belt 10, the conveyor belt 10 is a mesh-shaped thin-walled structure, and a negative pressure port 44 is provided on the support plate 43. The negative pressure port 44 is connected to the negative pressure generator.

[0032] The negative pressure generator generates negative pressure at the negative pressure port 44 , and the negative pressure causes the workpiece 50 to be pressed against the conveyor belt 10 , thereby preventing the workpiece 50 from drifting.

[0033] Furthermore, in order to improve the uniformity of the workpiece 50 clinging to the conveyor belt 10 , a plurality of negative pressure ports 44 are provided in an array.

[0034] Furthermore, in order to simplify the negative pressure pipeline and improve the convenience of installation and maintenance of the negative pressure pipeline, a negative pressure box 42 is provided below the negative pressure port 44. The negative pressure box 42 is a thin-walled hollow structure. An exhaust port 45 is provided on one side of the negative pressure box 42, and the exhaust port 45 is connected to the negative pressure generator.

[0035] Furthermore, in order to achieve a better balance between flexibility, heat resistance and wear resistance, the conveyor belt 10 is made of Teflon.

[0036] For those skilled in the art, various other corresponding changes and deformations can be made based on the technical solutions and concepts described above, and all of these changes and deformations should fall within the scope of protection of the claims of this utility model patent.

Claims

1. A safe and durable tunnel heating device, comprising a conveyor belt (10) and a heating device (20), characterized in that: The heating device (20) is arranged above the conveyor belt (10), and a support plate (40) is arranged below the conveyor belt (10); The heating device (20) includes a heater (21), and a sensor (30) is provided between the heater (21) and the conveyor belt (10); The support plate (40) includes a support plate body (41) that does not contact the conveyor belt (10), and the support plate body (41) is provided with support plates (43) that contact the conveyor belt (10) at both ends of the conveying direction of the conveyor belt (10).

2. The safe and durable tunnel heating device according to claim 1, characterized in that: The sensor (30) is a through-beam grating sensor.

3. The safe and durable tunnel heating device according to claim 1, characterized in that: The conveyor belt (10) is a mesh-shaped thin-walled structure, and a negative pressure port (44) is provided on the support plate (43), and the negative pressure port (44) is connected to a negative pressure generator.

4. The safe and durable tunnel heating device according to claim 3, characterized in that: A plurality of negative pressure ports (44) are arranged in an array.

5. The safe and durable tunnel heating device according to claim 3 or 4, characterized in that: A negative pressure box (42) is provided below the negative pressure port (44). The negative pressure box (42) is a thin-walled hollow structure. An air extraction port (45) is provided on one side of the negative pressure box (42). The air extraction port (45) is connected to the negative pressure generator.

6. The safe and durable tunnel heating device according to claim 1 or 3, characterized in that: The conveyor belt (10) is made of Teflon material.

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