Tunnel drying oven

Abstract

The present invention discloses a tunnel drying furnace, which is used for drying materials loaded on a tray, and the tunnel drying furnace comprises: a tunnel furnace body, which is provided with a drying chamber for accommodating the tray; a heating plate, which is arranged on the inner side wall of the tunnel furnace body, and is used for heating the materials; and a telescopic mechanism, which is installed on the outer side wall of the tunnel furnace body corresponding to the heating plate, and the telescopic mechanism is connected to the heating plate, and drives the heating plate to be close to or separated from the materials. The tunnel drying furnace of the present invention arranges a telescopic mechanism capable of driving the heating plate on the outer side wall of the tunnel furnace body, so that the heating plate performs contact heating on the materials, which replaces the radiation heating of the materials by the heating plate in the prior art, and has high heating efficiency, thereby greatly improving the heating efficiency of the materials, ensuring the uniformity of the heating of the materials, thereby saving energy and reducing the production cost of the drying materials.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum drying, in particular to a tunnel type drying furnace. Background Art

[0002] With the development of science and technology, the processing and production of many materials requires vacuum drying to reduce the moisture content in the materials so that they meet the corresponding use requirements. For example, the production and processing of lithium battery packs in electronic components use a lot of drying processes. Most of the current drying equipment is to set a heating plate on the inner wall of the tunnel drying furnace, and use the heating plate to radiate and heat the materials in the cavity of the tunnel drying furnace. However, the heating efficiency of the lithium battery pack is low during the drying process, and the heating temperature of each group of lithium battery packs is uneven, resulting in energy waste and increasing the production cost of drying lithium battery packs. In addition, the heating plate of the tunnel drying furnace usually adopts a plug-in electrical wiring system, and the power wiring of the heating plate is in the cavity of the drying furnace. Vacuum discharge often occurs, which poses a hidden danger to production safety. Summary of the invention

[0003] The main purpose of the present invention is to provide a tunnel drying furnace, aiming to solve the technical problems of low heating efficiency and uneven heating of tunnel drying furnaces in the prior art.

[0004] To achieve the above-mentioned purpose, the tunnel drying furnace proposed in the present invention is used for drying materials loaded on a tray, and the tunnel drying furnace comprises: a tunnel furnace body, which is provided with a drying chamber for accommodating the tray; a heating plate, which is arranged on the inner wall of the tunnel furnace body and is used to heat the material; a telescopic mechanism, which is installed on the outer wall of the tunnel furnace body corresponding to the heating plate, and the telescopic mechanism is connected to the heating plate and drives the heating plate to be close to or away from the material.

[0005] Preferably, the telescopic mechanism comprises:

[0006] A hollow telescopic rod, a first end of which passes through the side wall of the tunnel furnace body and extends into the drying chamber to be connected to the heating plate;

[0007] A driving member, driving the hollow telescopic rod to drive the heating plate to be close to or away from the material;

[0008] The terminal bracket is located between the driving member and the hollow telescopic rod, the second end of the hollow telescopic rod is connected to the terminal bracket, the terminal bracket is provided with an outer terminal and an inner terminal, the power cord of the heating plate passes through the hollow telescopic rod and is connected to the inner terminal, and the external power supply is connected to the outer terminal.

[0009] Preferably, the terminal bracket is provided with a accommodating cavity connected to the hollow telescopic rod, a mounting plate is provided on the side of the accommodating cavity away from the hollow telescopic rod, the inner connecting terminal is installed on the side of the mounting plate facing the hollow telescopic rod, and the outer connecting terminal is installed on the side of the mounting plate facing the driving member.

[0010] Preferably, a transmission frame is provided on the terminal bracket, one end of the transmission frame is connected to the output shaft of the driving member, and the other end of the transmission frame is connected to the mounting plate.

[0011] Preferably, the tunnel drying furnace also includes: a fixed plate, which is arranged on the outer side wall of the tunnel furnace body corresponding to the heating plate; a fixed frame, which is vertically installed on the fixed plate, the driving member is installed outside the fixed frame, the terminal bracket and the transmission frame are both arranged inside the fixed frame, and the first end of the hollow telescopic rod passes through the fixed frame, the fixed plate and the side wall of the tunnel furnace body in sequence.

[0012] Preferably, a guide sleeve is provided on a side of the fixing plate facing the heating plate, and the heating plate is provided with a guide rod slidably matched with the guide sleeve.

[0013] Preferably, a sealing bellows is disposed on the outer sleeve of the hollow telescopic rod, and the sealing bellows extends from the fixing frame to the terminal bracket.

[0014] Preferably, the tunnel-type drying furnace further comprises a material transport drive assembly, which is mounted on the outer side wall of the tunnel furnace body, and a plurality of conveying rollers are provided on the bottom wall of the drying chamber, and the material transport drive assembly drives the conveying rollers to rotate so that the tray carried on the conveying rollers moves within the drying chamber.

[0015] Preferably, the number of the heating plates is two, and the two heating plates are arranged on two opposite inner walls of the tunnel furnace body. The number of the telescopic mechanisms is consistent with the number of the heating plates and are arranged in a one-to-one correspondence.

[0016] Preferably, the heating plate is made of aluminum alloy.

[0017] In the technical solution of the present invention, when the tray loaded with materials enters the designated position in the drying chamber through the opening of the tunnel furnace body, the telescopic mechanism on the outer wall of the tunnel furnace body drives the heating plate in the drying chamber to close to the materials loaded on the tray, and the heating plate is energized. After the heating of the materials is completed, the telescopic mechanism drives the heating plate to separate from the materials. The tunnel drying furnace of the present invention is provided with a telescopic mechanism capable of driving the heating plate on the outer wall of the tunnel furnace body, so that the heating plate performs contact heating on the materials, replacing the radiation heating of the materials by the heating plate in the prior art, and has high heating efficiency, thereby greatly improving the heating efficiency of the materials, ensuring the uniformity of heating of the materials, thereby saving energy and reducing the production cost of drying materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the assembly of a tunnel drying furnace according to an embodiment of the present invention;

[0020] Figure 2 It is a schematic structural diagram of a tunnel furnace body and a material transport drive assembly of a tunnel drying furnace according to an embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of a heating plate, a telescopic mechanism, a fixed plate and a fixed frame of a tunnel drying furnace according to an embodiment of the present invention;

[0022] Figure 4 for Figure 3 Schematic cross-section of .

[0023] Description of Figure Numbers:

[0024]

[0025]

[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] In the present invention, the descriptions of directions such as "up", "down", "left" and "right" are as follows: Figures 1 to 4 The directions shown in the figure are for reference only and are used to explain the Figures 1 to 4 The relative position relationship between the components in the shown posture. If the specific posture changes, the directional indication will also change accordingly.

[0031] The invention provides a tunnel type drying furnace.

[0032] like Figures 1 to 4 As shown, in one embodiment of the present invention, a tunnel drying furnace 100 is used to dry materials loaded on a tray 200. The tunnel drying furnace 100 includes a tunnel furnace body 1, a heating plate 2 and a telescopic mechanism 3. The tunnel furnace body 1 is provided with a drying chamber 11 for accommodating the tray 200; the heating plate 2 is arranged on the inner side wall of the tunnel furnace body 1 for heating the materials; the telescopic mechanism 3 is installed on the outer side wall of the tunnel furnace body 1 corresponding to the heating plate 2, and the telescopic mechanism 3 is connected to the heating plate 2 and drives the heating plate 2 to be close to or away from the materials. The materials are generally electronic components. This embodiment takes the drying of lithium battery packs 300 as an example.

[0033] When the tray 200 loaded with the lithium battery pack 300 enters the designated position in the drying chamber 11 through the opening of the tunnel furnace body 1, the telescopic mechanism 3 on the outer wall of the tunnel furnace body 1 drives the heating plate 2 in the drying chamber 11 to be close to the lithium battery pack 300 on the tray 200, and the heating plate 2 is powered. After the heating of the lithium battery pack 300 is completed, the telescopic mechanism 3 drives the heating plate 2 to separate from the lithium battery pack 300. The tunnel drying furnace 100 of this embodiment is provided with a telescopic mechanism 3 capable of driving the heating plate 2 on the outer wall of the tunnel furnace body 1, so that the heating plate 2 performs contact heating on the lithium battery pack 300, replacing the radiation heating of the lithium battery pack 300 by the heating plate 2 in the prior art, and has high heating efficiency, thereby greatly improving the heating efficiency of the lithium battery pack 300, ensuring the uniformity of heating of the lithium battery pack 300, thereby saving energy and reducing the production cost of drying the lithium battery pack 300.

[0034] Specifically, the telescopic mechanism 3 includes a hollow telescopic rod 31, a driving member 32 and a terminal bracket 33; the first end of the hollow telescopic rod 31 passes through the side wall of the tunnel furnace body 1, and extends into the drying chamber 11 to be connected to the heating plate 2; the driving member 32 drives the hollow telescopic rod 31 to drive the heating plate 2 to be close to or detach from the lithium battery pack 300; the terminal bracket 33 is located between the driving member 32 and the hollow telescopic rod 31, and the second end of the hollow telescopic rod 31 is connected to the terminal bracket 33, and the terminal bracket 33 is provided with an outer terminal 333 and an inner terminal 332, and the power cord of the heating plate 2 passes through the hollow telescopic rod 31 and is connected to the inner terminal 332, and the external power supply is connected to the outer terminal 333.

[0035] like Figure 3 and Figure 4 As shown, the left end of the hollow telescopic rod 31 passes through the side wall of the tunnel furnace body 1 and is connected to the heating plate 2, and the right end of the hollow telescopic rod 31 is connected to the terminal bracket 33. The driving member 32 of this embodiment can adopt the driving cylinder in the prior art. The first end of the hollow telescopic rod 31 passes through the outer wall and the inner wall of the tunnel furnace body 1 in sequence. The power cord of the heating plate 2 is led out through the hollow part of the hollow telescopic rod 31, and then connected to the inner terminal 332, and then connected to the external power supply outside the drying chamber 11 through the outer terminal 333. Leading the power cord of the heating plate 2 out of the drying chamber 11 can avoid discharge in a vacuum environment and reduce safety hazards in the production process. When the tray 200 loaded with the lithium battery pack 300 enters the designated position in the drying chamber 11 through the opening of the tunnel furnace body 1, the driving member 32 drives the hollow telescopic rod 31 to drive the heating plate 2 to be close to the lithium battery pack 300, and the heating plate 2 performs contact heating on the lithium battery pack 300. After the heating of the lithium battery pack 300 is completed, the driving member 32 drives the hollow telescopic rod 31 to drive the heating plate 2 to separate from the lithium battery pack 300.

[0036] like Figure 4As shown, the terminal bracket 33 is provided with a receiving cavity 331 connected to the hollow telescopic rod 31, a mounting plate 334 is provided on the side of the receiving cavity 331 away from the hollow telescopic rod 31, an inner wiring terminal 332 is installed on the side of the mounting plate 334 facing the hollow telescopic rod 31, and an outer wiring terminal 333 is installed on the side of the mounting plate 334 facing the driving member 32. The inner wiring terminal 332 is accommodated in the receiving cavity 331 of the terminal bracket 33, and the structure is compact, which reduces the installation space of the terminal bracket 33.

[0037] In the tunnel drying furnace 100 of this embodiment, a transmission frame 34 is provided on the terminal bracket 33, one end of the transmission frame 34 is connected to the output shaft of the driving member 32, and the other end of the transmission frame 34 is connected to the mounting plate 334. When the tray 200 loaded with the lithium battery pack 300 enters the designated position in the drying chamber 11 through the opening of the tunnel furnace body 1, the driving member 32 drives the transmission frame 34 connected thereto, thereby driving the hollow telescopic rod 31, so that the heating plate 2 connected to the hollow telescopic rod 31 is close to the lithium battery pack 300, which has a simple structure and is easy to produce.

[0038] like Figure 3 and Figure 4 As shown, since the side wall of the tunnel furnace body 1 is relatively thin, in order to facilitate the fixing of the driving member 32, the tunnel drying furnace 100 further includes a fixing plate 4 and a fixing frame 5; the fixing plate 4 is arranged on the outer side wall of the tunnel furnace body 1 corresponding to the heating plate 2; the fixing frame 5 is vertically mounted on the fixing plate 4, the driving member 32 is mounted outside the fixing frame 5, the terminal bracket 33 and the transmission frame 34 are both arranged inside the fixing frame 5, and the first end of the hollow telescopic rod 31 passes through the fixing frame 5, the fixing plate 4 and the side wall of the tunnel furnace body 1 in sequence. The fixing plate 4 of this embodiment is welded to the outer side wall of the tunnel furnace body 1, and the fixing plate 4 and the fixing frame 5 can provide support force for the driving member 32, the hollow telescopic rod 31 and the terminal bracket 33 to prevent the telescopic mechanism 3 from falling off from the side wall of the tunnel furnace body 1.

[0039] In this embodiment, a guide sleeve 35 is provided on the side of the fixed plate 4 facing the heating plate 2, and the heating plate 2 is provided with a guide rod 36 that slides with the guide sleeve 35. When the driving member 32 drives the heating plate 2 to be close to the lithium battery pack 300, the guide rod 36 on the heating plate 2 gradually slides out of the guide sleeve 35. When the driving member 32 drives the heating plate 2 away from the lithium battery pack 300, the guide rod 36 on the heating plate 2 gradually slides into the guide sleeve 35. The movement of the heating plate 2 is guided by the sliding cooperation between the guide rod 36 and the guide sleeve 35. The structure is simple and ingenious.

[0040] It should be noted that the hollow telescopic rod 31 is provided with a sealing bellows 311, and the sealing bellows 311 extends from the fixing frame 5 to the terminal bracket 33. The sealing bellows 311 of this embodiment is a caliper bellows, and the sealing bellows 311 can seal the inner and outer sides of the drying chamber 11. The sealing bellows 311 provided on the hollow telescopic rod 31 can enhance the stability of the sealing bellows 311, improve the working performance of the inner terminal 332 and the outer terminal 333, and extend the service life of the inner terminal 332 and the outer terminal 333.

[0041] In this embodiment, the tunnel drying furnace 100 further includes a material transport drive assembly 6, which is mounted on the outer side wall of the tunnel furnace body 1. The bottom wall of the drying chamber 11 is provided with a plurality of conveying rollers 12. The material transport drive assembly 6 drives the conveying rollers 12 to rotate so that the tray 200 carried on the conveying rollers 12 moves in the drying chamber 11. The material transport drive assembly 6 of this embodiment includes a drive motor, a synchronous wheel mounted on each conveying roller, and a synchronous belt wound around the synchronous wheel. The installation method of the drive motor, the synchronous wheel and the synchronous belt is relatively conventional and will not be repeated in this embodiment. After the heating of the lithium battery pack 300 is completed, the drive motor is started, and the drive motor drives the plurality of conveying rollers to rotate simultaneously through the synchronous belt and the synchronous wheel, so as to move the tray 200 carried on the conveying rollers 12 out of the drying chamber 11 from the outlet of the tunnel furnace body 1, and at the same time, the lithium battery pack 300 to be dried is moved to a designated position in the drying chamber 11, so that the sequential cycle heating of the lithium battery pack 300 can be realized.

[0042] In this embodiment, there are two heating plates 2, which are arranged on two opposite inner walls of the tunnel furnace body 1. The number of the telescopic mechanisms 3 is consistent with the number of the heating plates 2 and they are arranged one by one. Figure 1 As shown, the two heating plates 2 cooperate to heat the lithium battery pack 300, thereby improving the heating efficiency. Heating plates 2 are provided on the left and right side walls of the drying chamber 11, and telescopic mechanisms 3 are installed on the left and right outer walls of the tunnel furnace body 1 respectively corresponding to the two heating plates 2. The left telescopic mechanism 3 drives the left heating plate 2, and the right telescopic mechanism 3 drives the right heating plate 2. A telescopic mechanism 3 corresponds to a driving mode of one heating plate 2, which is convenient for adjusting the gap between the heating plate 2 and the lithium battery pack 300 separately. Specifically, the tray 200 and the heating plate 2 of this embodiment are both made of aluminum alloy. Aluminum alloy parts are used, which are light in weight and highly thermally conductive, easy to obtain materials, easy to produce, and conducive to improving the heating efficiency of the tunnel drying furnace 100.

[0043] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A tunnel drying furnace for drying materials loaded on a tray, characterized in that: The tunnel drying furnace comprises: The tunnel furnace body is provided with a drying chamber for accommodating the tray; A heating plate, arranged on the inner wall of the tunnel furnace body, for heating the material; A telescopic mechanism is installed on the outer side wall of the tunnel furnace body corresponding to the heating plate, the telescopic mechanism is connected to the heating plate, and drives the heating plate to be close to or away from the material; The telescopic mechanism comprises: A hollow telescopic rod, a first end of which passes through the side wall of the tunnel furnace body and extends into the drying chamber to be connected to the heating plate; A driving member, driving the hollow telescopic rod to drive the heating plate to be close to or away from the material; A terminal bracket is located between the driving member and the hollow telescopic rod, the second end of the hollow telescopic rod is connected to the terminal bracket, the terminal bracket is provided with an outer terminal and an inner terminal, the power line of the heating plate passes through the hollow telescopic rod and is connected to the inner terminal, the external power supply is connected to the outer terminal, and the terminal bracket is provided with a transmission frame; The terminal bracket is provided with a receiving cavity communicated with the hollow telescopic rod, a mounting plate is provided on a side of the receiving cavity away from the hollow telescopic rod, the inner terminal is mounted on a side of the mounting plate facing the hollow telescopic rod, and the outer terminal is mounted on a side of the mounting plate facing the driving member; one end of the transmission frame is connected to the output shaft of the driving member, and the other end of the transmission frame is connected to the mounting plate; The tunnel drying furnace further comprises a fixing plate and a fixing frame, wherein the fixing plate is arranged on the outer side wall of the tunnel furnace body corresponding to the heating plate; the fixing frame is vertically mounted on the fixing plate, the driving member is mounted outside the fixing frame, the terminal bracket and the transmission frame are both arranged inside the fixing frame, and the first end of the hollow telescopic rod passes through the fixing frame, the fixing plate and the side wall of the tunnel furnace body in sequence; A guide sleeve is provided on one side of the fixing plate facing the heating plate, and the heating plate is provided with a guide rod that is slidably matched with the guide sleeve; The hollow telescopic rod is outer-coated with a sealing bellows, and the sealing bellows extends from the fixing frame to the terminal bracket.

2. The tunnel drying furnace according to claim 1, characterized in that: The tunnel-type drying furnace also includes a material transport drive assembly, which is installed on the outer side wall of the tunnel furnace body. The bottom wall of the drying chamber is provided with a plurality of conveying rollers. The material transport drive assembly drives the conveying rollers to rotate so that the tray carried on the conveying rollers moves in the drying chamber.

3. The tunnel drying furnace according to claim 1, characterized in that: The number of the heating plates is two, and the two heating plates are arranged on two opposite inner side walls of the tunnel furnace body. The number of the telescopic mechanisms is consistent with the number of the heating plates and are arranged in a one-to-one correspondence.

4. The tunnel drying furnace according to claim 1, characterized in that: The heating plate is made of aluminum alloy.

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