High efficiency tunnel furnace and baking method

Abstract

The application provides a high-efficiency tunnel furnace and a baking method. The high-efficiency tunnel furnace comprises a furnace shell, the furnace shell surrounds a baking channel, the baking channel is arranged along a conveying direction, at least one baking bin is arranged in the baking channel along the conveying direction, and the baking bin surrounds an enclosed bin channel, the input end and the output end of the enclosed bin channel are open, a supporting and guiding part is arranged in the baking bin to support a single-piece product to be baked, a heating element is arranged on the baking bin to supply heat to the enclosed bin channel, a transmission assembly is arranged through the enclosed bin channel and performs a circulating motion to push multiple batches of single-piece products in a pipeline manner, and the multiple batches of single-piece products are sequentially moved on the supporting and guiding part. The problems of slow heating efficiency, uneven baking heating and energy waste caused by placing the single-piece products filled in the baking bin in a baking furnace for baking are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of baking equipment, in particular to an efficient tunnel furnace and a baking method. BACKGROUND

[0002] In the production process of some single-chip products, such as LED packaging, semiconductor packaging and the like, the products need to be baked to realize the baking operation of the links of material, semi-finished product dehumidification, glue curing, product aging, finished product dehumidification and the like, so as to meet the material process requirements and guarantee the product quality. Due to the long placement time, the lamp panel, the circuit board and the like are prone to cause the moisture of the integrated circuit board, which affects the use of the single-chip product (especially the integrated circuit board). Therefore, some single-chip products are generally recommended to be baked before assembling components, which can reduce the risk of water vapor residue and board explosion, and many single-chip products are generally coated with ink for anti-welding treatment before processing. Therefore, the existing single-chip products usually use a baking furnace or a tunnel furnace to bake the products.

[0003] In the process of baking the products by using the existing baking furnace or tunnel furnace, a plurality of single-chip products are stacked in a placing box, and then the placing box filled with single-chip products is placed in the baking furnace or tunnel furnace, so as to bake the whole placing box by heating in the baking furnace or tunnel furnace. Since the single-chip products are surrounded by the placing box, the heat for baking is blocked by the placing box, which causes the problems of slow heating efficiency of the single-chip products, uneven heating for baking, and energy waste.

[0004] Therefore, the prior art still needs to be improved and developed. SUMMARY

[0005] The purpose of the present application is to provide an efficient tunnel furnace and a baking method, which solves the problems of slow heating efficiency of single-chip products, uneven heating for baking and energy waste caused by placing the placing box filled with single-chip products in the baking furnace for baking in the prior art.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0007] On the one hand, the present application provides an efficient tunnel furnace, which comprises a furnace shell, the furnace shell surrounds a baking channel, the baking channel is arranged along a conveying direction;

[0008] at least one baking bin, the baking bin is arranged in the baking channel along the conveying direction and surrounds an enclosed bin channel, the input end and the output end of the enclosed bin channel are open, and a supporting and guiding part is arranged in the baking bin to support the single-chip products to be baked;

[0009] a heating element, the heating element is arranged on the baking bin to supply heat to the enclosed bin channel;

[0010] The conveying assembly is arranged through the surrounding warehouse and moves in a circulating manner to push the batches of single products in a pipeline manner and make the batches of single products move on the support guide in sequence.

[0011] Optionally, the baking warehouse comprises a heat-conducting warehouse shell, the input end and the output end of the heat-conducting warehouse shell are open to form a surrounding warehouse inside the heat-conducting warehouse shell.

[0012] The heating member is arranged on the outer wall of the heat-conducting warehouse shell and conducts heat through the heat-conducting warehouse shell to bake the single products.

[0013] Optionally, the support guide comprises guide grooves arranged on the inner walls of the two sides of the surrounding warehouse respectively, and the two side edges of the single product are inserted into the two guide grooves respectively.

[0014] Optionally, the conveying assembly comprises a chain transmission member, the chain of the chain transmission member has an upper chain segment and a lower chain segment extending in the conveying direction, the chain is arranged in the heat-conducting warehouse shell, the upper chain segment is arranged through the surrounding warehouse, and the lower chain segment is located outside the heat-conducting warehouse shell.

[0015] A plurality of push plates are arranged on the chain in a spaced manner to move into the surrounding warehouse in sequence through the movement of the chain to push the single products.

[0016] Optionally, the conveying assembly further comprises a cushion block arranged in the surrounding warehouse and located between the upper chain segment and the inner bottom surface of the heat-conducting warehouse shell to support the upper chain segment.

[0017] Optionally, the input end of the baking channel is provided with a box outputting and inputting assembly, the box outputting and inputting assembly is used for pushing the single products to be baked out of the placing box to make the single products enter the surrounding warehouse.

[0018] Optionally, the box outputting and inputting assembly comprises a first box moving member, the first box moving member is used for moving the placing box from the storage area to the input end opening of the surrounding warehouse.

[0019] A push cylinder is provided, a push plate is connected to the piston rod of the push cylinder, and the push plate moves towards the input end opening of the surrounding warehouse through the driving of the push cylinder to push the single products in the placing box into the support guide of the surrounding warehouse from the placing box.

[0020] Optionally, the first box moving member comprises a first speed-up chain conveying line, the first speed-up chain conveying line is arranged below the push cylinder and conveys the placing box loaded with the single products towards the input end opening of the surrounding warehouse.

[0021] The first lifting platform is movably arranged between the output end of the first speed-up chain conveying line and the input end of the surrounding warehouse in the up-down direction, and is used for receiving the placing box containing the single product output by the first speed-up chain conveying line and conveying the placing box containing the single product to the input end of the surrounding warehouse.

[0022] Optionally, the output end of the baking channel is provided with a boxing output assembly, which is used for sending the baked single product from the surrounding warehouse into the placing box.

[0023] Optionally, the boxing output assembly comprises a second box moving member, which is used for arranging the empty placing box.

[0024] An auxiliary boxing member is arranged at the output opening of the surrounding warehouse, and is used for pushing the baked product single piece from the output opening of the surrounding warehouse into the placing box on the second box moving member.

[0025] The second box moving member moves the placing box containing the product single piece from the output opening of the surrounding warehouse to the completion area.

[0026] Optionally, the second box moving member comprises a second lifting platform, which is movably arranged at the output end of the surrounding warehouse in the up-down direction and receives the baked product single piece pushed out from the output end of the surrounding warehouse by the auxiliary boxing member through the empty placing box.

[0027] A second speed-up chain conveying line is arranged at one side of the second lifting platform and conveys the placing box containing the baked product single piece from the second lifting platform to the completion area.

[0028] Optionally, the auxiliary boxing assembly comprises a front pushing member arranged at the input end of the surrounding warehouse.

[0029] An auxiliary lifting assembly is connected to the front pushing member to drive the front pushing member to ascend or descend.

[0030] An auxiliary horizontal pushing assembly is connected to the auxiliary lifting assembly to drive the auxiliary lifting assembly to move towards the second box moving member.

[0031] The front pushing member is driven by the auxiliary lifting assembly to ascend into the surrounding warehouse and is located at the side of the baked product single piece towards the input end of the surrounding warehouse, and is driven by the auxiliary horizontal pushing assembly to push the single product at the output opening of the surrounding warehouse from the output opening of the surrounding warehouse into the placing box.

[0032] Optionally, a cartridge conveying assembly is arranged between the cartridge outputting-in assembly and the cartridge loading-out assembly, and is configured to convey the empty placing cavity on the cartridge outputting-in assembly to the cartridge loading-out assembly.

[0033] Optionally, the cartridge conveying assembly comprises a first belt line arranged on the cartridge outputting-in assembly and configured to convey the placing cavity towards the outside of the furnace shell.

[0034] a second belt line arranged on the outside of the furnace shell and extending along the conveying direction, and a first end of the second belt line is connected to a second end of the first belt line.

[0035] a third belt line arranged on the cartridge loading-out assembly and configured to convey the placing cavity towards the inside of the furnace shell, and the third belt line is connected to a second end of the second belt line.

[0036] a cartridge pushing member arranged at the second end of the second belt line and configured to push the placing cavity at the second end of the second belt line to the third belt line.

[0037] Optionally, an air suction cooling assembly is arranged on the top of the furnace shell, and is configured to suck the exhaust gas in the baking channel and the surrounding warehouse.

[0038] Optionally, the air suction cooling assembly comprises an air suction pipe connected to the baking channel and the surrounding warehouse.

[0039] a cooling machine connected to the air suction pipe to suck the exhaust gas.

[0040] A movable scraper is arranged on one side of the cooling machine, and the movable scraper is connected to a pushing member, and the movable scraper is driven by the pushing member to move along the inner cavity of the cooling machine to clean the inner cavity of the cooling machine.

[0041] In another aspect, the present application also provides a baking method of the high-efficiency tunnel furnace, which is applied to the high-efficiency tunnel furnace as described above, and the baking method comprises the following steps:

[0042] The single-piece product to be baked is pushed out of the placing cavity by the cartridge outputting-in assembly at the input end of the baking channel, so that the single-piece product enters the surrounding warehouse.

[0043] The single-piece product on the support guide part in the surrounding warehouse is pushed by the conveying assembly which moves in the surrounding warehouse in a circulating manner, so that multiple batches of single-piece products move and bake in the surrounding warehouse in a pipeline manner along the conveying direction, and the surrounding warehouse is heated by the heating member.

[0044] The cartridge conveying assembly is configured to convey the empty placing cavity on the cartridge outputting-in assembly to the cartridge loading-out assembly.

[0045] The baked single-piece product is sent from the enclosed warehouse into the empty placing cavity by the boxing output assembly.

[0046] The high-efficiency tunnel furnace and the baking method provided by the application have at least the following beneficial effects: the baking channel is formed by the furnace shell, the baking channel is arranged along the conveying direction, and the baking channel is used for heat preservation, so that heat is concentrated in the furnace shell. At least one baking bin is arranged in the furnace shell, the baking bin is arranged in the baking channel along the conveying direction and encloses an enclosed warehouse, a supporting and guiding part is arranged in the enclosed warehouse, the baking bin is heated by a heating element, heat is conducted by the baking bin to concentrate in the supporting and guiding part and the enclosed warehouse, when the single-piece product is pushed by the transmission assembly, the single-piece product directly contacts the supporting and guiding part, and the upper and lower surfaces of the single-piece product are exposed in the enclosed warehouse, so that multiple batches of single-piece products move in the enclosed warehouse along the conveying direction in a flow line manner while being baked, the single-piece product directly contacting the supporting and guiding part is quickly heated, so that the baking efficiency is improved, the heat is concentrated in the enclosed warehouse, the upper and lower surfaces of the single-piece product are heated in the enclosed warehouse, the baking and heating are more uniform, the heating efficiency is higher, and the baking effect of the single-piece product is improved; meanwhile, the placing cavity does not enter the baking bin and flows outside the heating bin, the placing cavity does not absorb heat, and the heating energy consumption is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0048] Figure 1 A structural schematic diagram of a high-efficiency tunnel furnace provided by the application;

[0049] Figure 2 A sectional view of a main part of a high-efficiency tunnel furnace provided by the application;

[0050] Figure 3 A structural schematic diagram of a baking bin of a high-efficiency tunnel furnace provided by the application;

[0051] Figure 4 A partial structural schematic diagram of a transmission assembly of a high-efficiency tunnel furnace provided by the application;

[0052] Figure 5 A structural schematic diagram of a boxing input assembly, a box body conveying assembly, and a boxing output assembly of a high-efficiency tunnel furnace provided by the application;

[0053] Figure 6 A schematic diagram of a working process of a box outputting and inputting assembly of a high-efficiency tunnel furnace provided in an embodiment of the present application, wherein Figure 6 Fig. (a) in the specification is a schematic diagram of a structure of the box outputting and inputting assembly in a lowered position ready to receive a placing box, wherein Figure 6 Fig. (b) in the specification is a schematic diagram of a structure of the box outputting and inputting assembly in a lowered position receiving a placing box;

[0054] Figure 7 A schematic diagram of another working process of a box outputting and inputting assembly of a high-efficiency tunnel furnace provided in an embodiment of the present application, wherein Figure 7 Fig. (c) in the specification is a schematic diagram of a structure of the box outputting and inputting assembly in a raised position aligned with an enclosed warehouse, wherein Figure 7 Fig. (d) in the specification is a schematic diagram of a structure of a push cylinder pushing a single product from a placing box to an enclosed warehouse;

[0055] Figure 8 A schematic diagram of a box outputting and inputting assembly of a high-efficiency tunnel furnace provided in an embodiment of the present application, wherein

[0056] Figure 9 A schematic diagram of a box outputting and inputting assembly of a high-efficiency tunnel furnace provided in an embodiment of the present application, wherein

[0057] In the drawings, various reference signs are used:

[0058] 100, frame; 200, furnace shell; 210, baking channel; 220, heat preservation layer; 300, baking warehouse; 310, heat-conducting warehouse shell; 311, enclosed warehouse; 320, heating element; 330, support guide part; 331, guide groove; 400, conveying assembly; 410, chain transmission element; 411, chain; 412, cushion block; 413, upper chain segment; 414, lower chain segment; 420, push plate; 500, box outputting and inputting assembly; 510, first box moving element; 511, first speed-up chain conveying line; 512, first lifting platform; 513, limiting through hole; 520, push cylinder; 521, push plate; 530, jacking blocking mechanism; 540, spacing column; 600, box conveying assembly; 610, first belt line; 620, second belt line; 630, third belt line; 640, box pushing element; 700, box loading outputting assembly; 710, second box moving element; 711, second lifting platform; 712, second speed-up chain conveying line; 720, auxiliary box loading element; 730, front pushing element; 731, front pushing lifting plate; 732, vertical column; 740, auxiliary lifting assembly; 741, auxiliary base; 742, auxiliary lifting cylinder; 743, vertical guide element; 750, auxiliary horizontal pushing assembly; 751, linear sliding table; 752, horizontal guide element; 800, air suction and cooling assembly; 810, air suction pipe; 820, cooling machine; 830, movable scraper; 840, pushing force element. DETAILED DESCRIPTION

[0059] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0060] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position shown in the drawings, and are only for convenience of description, and cannot be understood as a limitation on the technical solutions. The terms "first", "second" are only for the purpose of convenient description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0061] Embodiment one

[0062] As shown in Figure 1 , Figure 2 , the present embodiment proposes a high-efficiency tunnel furnace, mainly comprising: a rack 100, a furnace shell 200, at least one baking bin 300, a heating element 320, and a conveying assembly 400. As shown in Figure 1 , the rack 100 is vertically arranged to provide structural support for the entire high-efficiency tunnel furnace. The furnace shell 200 is arranged on the rack 100 and encloses a baking channel 210, which is arranged along the conveying direction. A heat preservation layer 220, such as insulation cotton or other materials, can be arranged on the inner wall of the furnace shell 200, which can reduce the heat loss in the baking channel 210. For the convenience of structural description, the direction from back to front is the conveying direction, the direction perpendicular to the conveying direction on the horizontal plane is the left-right direction, and the vertical direction is the up-down direction. As shown in Figure 2 , Figure 3As shown, the baking bin 300 is arranged in the baking channel 210 along the conveying direction (front-rear direction) and encloses an enclosed bin channel 311 extending a predetermined length along the front-rear direction, with an input end at the rear end thereof and an output end at the front end thereof; the input end and the output end of the enclosed bin channel 311 are open, while the other sides are closed, and a support guide part 330 is arranged in the baking bin 300 to support the single-piece products to be baked, and a heating member 320 is arranged on the baking bin 300 to supply heat to the enclosed bin channel 311. The transmission assembly 400 is arranged through the enclosed bin channel 311 and performs a circulating movement to push multiple batches of single-piece products in a pipeline manner, so that the multiple batches of single-piece products are moved in sequence on the support guide part 330 along the direction from the rear to the front, and are heated and baked by the hot air in the enclosed bin channel and the heat of the support guide part 330 at the same time. It should be noted that multiple baking bins 300, for example, 6, are arranged in the baking channel 210 along the left-right direction, and the structures of the multiple baking bins 300 are basically the same. In this way, multiple baking channels can be arranged to bake simultaneously, thereby improving the baking efficiency. For the sake of simplicity of structure description, one baking bin 300 is described in detail below.

[0063] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the high-efficiency tunnel furnace of the present embodiment encloses the baking channel 210 by the furnace shell 200, so that the baking channel 210 is arranged to extend along the conveying direction, and the baking channel 210 is used for heat preservation to concentrate heat in the furnace shell 200. At least one baking bin 300 is arranged in the furnace shell 200, the baking bin 300 is arranged in the baking channel 210 along the conveying direction and encloses the enclosed bin channel 311, and a support guide part 330 is arranged in the enclosed bin channel 311, and the baking bin 300 is heated by the heating member 320 arranged thereon, and the heat is conducted by the baking bin 300 to concentrate in the support guide part 330 and the enclosed bin channel 311. When the single-piece products are pushed by the transmission assembly 400, the single-piece products directly contact the support guide part 330, and the upper and lower surfaces of the single-piece products are exposed in the enclosed bin channel 311, so that multiple batches of single-piece products move in the enclosed bin channel 311 along the conveying direction in a pipeline manner while being baked, the single-piece products directly contacting the support guide part 330 are quickly heated, thereby improving the baking efficiency, and the heat is concentrated in the enclosed bin channel 311, so that the upper and lower surfaces of the single-piece products are heated in the enclosed bin channel 311, thereby making the baking and heating more uniform and improving the heating efficiency and the baking effect of the single-piece products.

[0064] As shown in Figure 2 , Figure 3As shown, further, the baking bin 300 of the embodiment specifically comprises a heat-conducting bin shell 310, which can be square in shape. Due to the relatively long length extending in the front-rear direction, the baking bin 300 can be spliced in the front-rear direction by multiple heat-conducting bin shells 310 of relatively short length, so that the desired length can be spliced. It is easily conceivable that a heat-conducting bin shell 310 extending in the front-rear direction in one piece can also be used. The input end and the output end of the heat-conducting bin shell 310 are both open, so as to form an enclosed bin channel 311 inside the heat-conducting bin shell 310. The upper, lower, left and right sides of the heat-conducting bin shell 310 are all closed. The heating element 320 is arranged on the outer wall of the heat-conducting bin shell 310, and conducts heat through the heat-conducting bin shell 310 to bake the single-piece products. It should be noted that the heating element 320 can also be arranged on the inner walls of the upper, lower, left and right sides of the heat-conducting bin shell 310, as long as the position does not affect the flow of the single-piece products. In the specific structure, the heating element 320 generates heat when powered on. The heating element 320 can be arranged on the outer walls of the left and right sides of the heat-conducting bin shell 310, and multiple heating elements 320 are arranged on each side. The multiple heating elements 320 are arranged in the front-rear direction, so that the entire section of the heat-conducting bin shell 310 can be heated. The heat-conducting bin shell 310 can be made of metal to increase the heat conduction efficiency, and the enclosed bin channel 311 can concentrate heat in the channel, so that the heat is not easily dissipated, thereby improving the heat utilization rate.

[0065] As shown in Figure 2 , Figure 3 , Figure 4 As shown, further, the support and guide portion 330 of the embodiment specifically comprises guide grooves 331 arranged on the inner walls of the left and right sides of the enclosed bin channel 311, respectively. The two side edges of the single-piece products are inserted into the guide grooves 331 on the two sides, respectively. In the specific structure, the upper and lower spacing of the guide groove 331 matches the thickness of the single-piece product. The guide groove 331 extends from the open end at the rear side to the open end at the front, so as to penetrate the inner wall of the entire enclosed bin channel 311 in the conveying direction, so that the left and right side edges of the single-piece product can be inserted into the guide grooves 331 on the two sides. The single-piece product is horizontally placed in the enclosed bin channel 311. The transmission assembly 400 pushes the single-piece product between the guide grooves 331 on the two sides, so that the single-piece product moves in the guide grooves 331 from the rear to the front. The guide grooves 331 of the embodiment are arranged in multiple numbers in the up-down direction. The multiple guide grooves 331 are respectively used for inserting multiple single-piece products, so that multiple single-piece products arranged in up-down direction can be pushed at one time to be baked simultaneously, batch baking is realized, and the baking efficiency is improved.

[0066] As shown in Figure 2 , Figure 4As shown, the transmission component 400 in this embodiment further includes a chain drive 410 and a plurality of push plates 420. The chain 411 of the chain drive 410 has an upper chain segment 413 and a lower chain segment 414 extending along the conveying direction. The first and last ends of the upper chain segment 413 and the lower chain segment 414 are connected to a sprocket by an arc segment to achieve transmission. The chain 411 passes through the heat-conducting chamber shell 310, such that the upper chain segment 413 is disposed inside the enclosed chamber channel 311 and the lower chain segment 414 is located outside the heat-conducting chamber shell 310. The plurality of push plates 420 are spaced apart on the chain 411 to move sequentially into the enclosed chamber channel 311 by the movement of the chain 411 to push the single product. In the specific structure, connecting plates are arranged on the chain 411. The connecting plates are fixed to the links of the chain 411 and can move with the chain 411. A push plate 420 is fixedly mounted on the connecting plate in the vertical direction and extends in the vertical direction. When the push plate 420 rotates with the chain 411 and flips into the enclosed passageway 311, it can push multiple layers of single-piece products in the vertical direction. The length, width, and height of the push plate 420 can be designed according to the dimensions of the enclosed passageway 311. The closer the length, width, and height of the push plate 420 are to the dimensions of the enclosed passageway 311, the more it can block airflow. By blocking airflow, the impact of airflow on temperature can be reduced, making the temperature in the baking space formed between adjacent push plates 420 more stable. If the difference between the length, width, and height of the push plate 420 and the dimensions of the enclosed passageway 311 is greater, the airflow can be increased and the airflow can be faster. Smooth airflow helps to ensure consistent temperature, making the temperature in the baking space formed between adjacent push plates 420 more consistent.

[0067] like Figure 2 , Figure 4 As shown, the transmission assembly 400 in this embodiment further includes a pad 412, which is disposed within the enclosed channel 311 and located between the upper chain segment 413 and the inner bottom surface of the heat-conducting chamber shell 310 to support the upper chain segment 413. The pad 412 can be made of plastic, which effectively supports the upper chain segment 413, avoids friction between the chain 411 and the heat-conducting chamber shell 310, avoids wear on the metal structure, and makes the operation of the chain drive component 410 more stable.

[0068] It should be noted that when multiple baking chambers 300 are arranged side by side in the baking channel 210 in the left and right direction, multiple chains 411 can be set on a chain drive shaft, and push plates 420 can be set on the multiple chains 411 arranged side by side in the left and right direction, and they can be respectively set in different baking chambers 300.

[0069] Example 2

[0070] like Figure 1 , Figure 5As shown, the structure of the high-efficiency tunnel furnace of the embodiment is provided with a box outputting assembly 500 or / and a box loading assembly 700 on the basis of the first embodiment. Thus, the automatic loading and unloading of the single-piece products from the placing box can be realized, the placing box does not enter the baking chamber, and the placing box flows outside the heating chamber, the placing box does not absorb heat, and the heating energy consumption is effectively reduced. For the convenience of structural description, the box outputting assembly 500 is arranged at the input end of the baking channel 210, and the box outputting assembly 500 is used to push the single-piece products to be baked out of the placing box, so that the single-piece products enter the surrounding warehouse 311. The box loading assembly 700 is arranged at the output end of the baking channel 210, and the box loading assembly 700 is used to send the baked single-piece products into the placing box from the surrounding warehouse 311.

[0071] As shown in Figure 1 , Figure 5 Further, the box outputting assembly 500 of the embodiment specifically comprises: a first box moving piece 510 and a pushing cylinder 520. The first box moving piece 510 is used to move the placing box from the storage area to the input end opening of the surrounding warehouse 311. The storage area is an area adjacent to the input end of the surrounding warehouse 311, which is mainly used to place the placing box, and the single-piece products to be baked are inserted into the placing box in the up-down direction. The placing box filled with the single-piece products to be baked can be transported by the first box moving piece 510, and the transportation direction can be various, for example, the storage area can be located on the left side or the right side of the input end of the surrounding warehouse 311, and the storage area of the present application is arranged below and behind the input end of the surrounding warehouse 311. Thus, the space below the rack 100 is fully utilized for storage, and the structure is more optimized. The piston rod of the pushing cylinder 520 is connected with a push plate 521, and the push plate 521 is moved towards the input end opening of the surrounding warehouse 311 by the driving of the pushing cylinder 520, so as to push the single-piece products in the placing box into the surrounding warehouse 311 from the placing box.

[0072] As shown in Figure 5 , Figure 6As shown in Figures (a)-(d), when the placement basket filled with single-piece products to be baked moves from the storage area to the input opening of the enclosed channel 311 via the first box moving member 510, the push cylinder 520 is activated, causing the push plate 521 to push from back to front. The forward-moving push plate 521 enters the placement basket from the rear side, thus pushing the single-piece products in the placement basket into the support guide part 330 of the enclosed channel 311 in one go. It should be noted that the single-piece products on the placement basket conveyed by the first box moving member 510 are directly opposite the guide groove 331, so that multiple stacked single-piece products can be accurately pushed into the multi-layer guide groove 331 in one go by the push plate 521. Then, the push cylinder 520 retracts the push plate 521, and the first box moving member 510 moves the empty placement basket away, so as not to interfere with the movement of the push plate 420 driven by the chain drive member 410.

[0073] like Figure 5 As shown, further, the first box-moving component 510 in this embodiment specifically includes: a first double-speed chain conveyor 511 and a first lifting platform 512. The first double-speed chain conveyor 511 is disposed below the push cylinder 520 and opens towards the input end of the enclosed storage channel 311 to convey the placement frame containing the single product. The first lifting platform 512 is movably disposed in the vertical direction between the output end of the first double-speed chain conveyor 511 and the input end of the enclosed storage channel 311, and is used to receive the placement frame containing the single product output by the first double-speed chain conveyor 511, and to convey the placement frame containing the single product upward to the input end of the enclosed storage channel 311. In the specific structure, as shown... Figure 6 As shown in Figures (a) and (b), the storage area is located at the rear end of the first double-speed chain conveyor line 511. When the placement frame containing a single product is placed at the rear end of the first double-speed chain conveyor line 511, the placement frame is moved from back to front by the first double-speed chain conveyor line 511 and conveyed to the first lifting platform 512, as shown in Figures (a) and (b). Figure 6 As shown in Figures (c) and (d), the first lifting platform 512 rises, raising the placement frame to align with the input end of the enclosed storage channel 311. This allows the pusher plate 521, driven by the cylinder 520, to push the single product in the placement frame into the support guide 330 of the enclosed storage channel 311 in one go.

[0074] like Figure 5 , Figure 6As shown, a jacking blocking mechanism 530 is arranged between the first speed chain conveying line 511 and the first lifting platform 512. When the first lifting platform 512 does not reach the lower position, the jacking blocking mechanism 530 is located at the output end of the first speed chain conveying line 511 to block the placement ring on the first speed chain conveying line 511. When the first lifting platform 512 is lowered to the lower position, the jacking blocking mechanism 530 is lowered, so that the passage between the first speed chain conveying line 511 and the first lifting platform 512 is opened, and the placement ring on the first speed chain conveying line 511 can be smoothly pushed onto the first lifting platform 512.

[0075] Figure 6 As shown in Figs. (c) and (d), a limiting through hole 513 is arranged on the first lifting platform 512, and a spacing column 540 is fixedly arranged on the rack 100 in the vertical direction. When the first lifting platform 512 is lowered to the lower position, the fixed spacing column 540 is inserted into the limiting through hole 513 to penetrate the first lifting platform 512 and protrude from the surface of the first lifting platform 512, so that the spacing columns 540 arranged in the left-right direction form a limiting area between them. Thus, the placement ring conveyed by the first speed chain conveying line 511 passes through the spacing columns 540 for positioning, so as to be moved into the limiting area, thereby aligning the guiding groove 331 in the surrounding warehouse 311 in the left-right direction, and then the first lifting platform 512 is raised to align the placement ring with the guiding groove 331 in the surrounding warehouse 311 in the up-down direction.

[0076] As shown in Figs. (c) and (d), a limiting through hole 513 is arranged on the first lifting platform 512, and a spacing column 540 is fixedly arranged on the rack 100 in the vertical direction. When the first lifting platform 512 is lowered to the lower position, the fixed spacing column 540 is inserted into the limiting through hole 513 to penetrate the first lifting platform 512 and protrude from the surface of the first lifting platform 512, so that the spacing columns 540 arranged in the left-right direction form a limiting area between them. Thus, the placement ring conveyed by the first speed chain conveying line 511 passes through the spacing columns 540 for positioning, so as to be moved into the limiting area, thereby aligning the guiding groove 331 in the surrounding warehouse 311 in the left-right direction, and then the first lifting platform 512 is raised to align the placement ring with the guiding groove 331 in the surrounding warehouse 311 in the up-down direction. Figure 1 、 Figure 2 、 Figure 5As shown, further, the boxing output assembly 700 of the present embodiment specifically comprises a second box moving member 710 and an auxiliary boxing member 720. The second box moving member 710 is used to set the empty placing pocket. The auxiliary boxing member 720 is arranged at the output end opening of the surrounding warehouse 311, and is used to push the baked product pieces from the output end opening of the surrounding warehouse 311 into the placing pocket on the second box moving member 710. The second box moving member 710 moves the placing pocket carrying the product pieces from the output end opening of the surrounding warehouse 311 to the completion area, wherein the product pieces carried in the placing pocket are baked product pieces. In the specific structure, since the transmission assembly 400 adopts the chain transmission member 410, when the product pieces in the surrounding warehouse 311 are pushed by the pushing plate 420 towards the front and are about to reach the position of the output end opening of the surrounding warehouse 311, the pushing plate 420 will be flipped downwards under the driving of the chain 411, so that the upper product pieces cannot be pushed to reach the second box moving member 710 on the front side. Therefore, through the auxiliary boxing member 720, before the pushing plate 420 is flipped downwards, the auxiliary boxing member 720 replaces the pushing function of the pushing plate 420 from back to front, so that the multiple product pieces arranged in the up-down direction are still pushed out of the output end opening of the surrounding warehouse 311 towards the front, and are smoothly pushed onto the empty placing pocket on the second box moving member 710. Then, the second box moving member 710 moves the placing pocket filled with baked product pieces to the completion area.

[0077] As shown in Figure 5 , further, the second box moving member 710 of the present embodiment specifically comprises a second lifting platform 711 and a second speed-up chain conveying line 712. The second lifting platform 711 is movably arranged at the output end of the surrounding warehouse 311 in the up-down direction, and receives the baked product pieces pushed out of the output end of the surrounding warehouse 311 by the auxiliary boxing member 720 through the empty placing pocket. The second speed-up chain conveying line 712 is arranged at one side of the second lifting platform 711, and conveys the placing pocket filled with baked product pieces from the second lifting platform 711 to the completion area. The specific structure of the second lifting platform 711 and the second speed-up chain conveying line 712 can refer to the structure of the first speed-up chain conveying line 511 and the first lifting platform 512 described above. The two structures are similar, except that they are arranged at the input end and the output end of the surrounding warehouse 311, respectively.

[0078] As shown in Figure 2 , Figure 5 , Figure 8As shown, further, the auxiliary in-box assembly of the embodiment specifically comprises a front pushing piece 730, an auxiliary lifting assembly 740, and an auxiliary horizontal pushing assembly 750. The auxiliary lifting assembly 740 is connected to the front pushing piece 730 to drive the front pushing piece 730 to ascend or descend. The auxiliary horizontal pushing assembly 750 is connected to the auxiliary lifting assembly 740 to drive the auxiliary lifting assembly 740 to move towards the second box body moving piece 710. The front pushing piece 730 is driven by the auxiliary lifting assembly 740 to ascend into the surrounding warehouse 311 and is located at the side of the input end of the surrounding warehouse 311 towards the baked product single piece. The auxiliary horizontal pushing assembly 750 is driven to push the single piece product at the output end opening of the surrounding warehouse 311 out of the surrounding warehouse 311 to the placing compartment.

[0079] As shown in Figure 5 , Figure 8 , the front pushing piece 730 is arranged at the output end of the surrounding warehouse 311, specifically a stand 732 arranged on the front pushing lifting plate 731. An empty section is arranged below the front end of the heat-conducting warehouse shell 310. The stand 732 can be inserted into the surrounding warehouse 311 through the empty section and is located at the rear end of the frontmost pile of single piece products. The auxiliary lifting assembly 740 specifically comprises an auxiliary base 741, an auxiliary lifting cylinder 742, and vertical guide pieces 743. The auxiliary base 741 is connected to the auxiliary horizontal pushing assembly 750 and can move forward and backward by the driving of the auxiliary horizontal pushing assembly 750. The auxiliary lifting cylinder 742 is fixedly arranged on the auxiliary base 741. The vertical guide pieces 743 are arranged on the left and right sides of the auxiliary base 741. The auxiliary lifting cylinder 742 drives the front pushing lifting plate 731 to move in the up-down direction. The left and right sides of the front pushing lifting plate 731 slide through the vertical guide pieces 743, so that the front pushing lifting plate 731 and the stand 732 can move in the up-down direction. The auxiliary horizontal pushing assembly 750 specifically comprises a linear slide 751 and horizontal guide pieces 752. The auxiliary base 741 is fixedly arranged on the linear slide 751 and moves in the front-rear direction by the driving of the linear slide 751 and under the guiding action of the horizontal guide pieces 752. The linear slide 751 can be a ball screw structure.

[0080] As shown in Figure 1 , Figure 5 , further, the box body conveying assembly 600 is arranged between the out-box input assembly 500 and the in-box output assembly 700. The box body conveying assembly 600 is used to convey the empty placing compartment on the out-box input assembly 500 to the in-box output assembly 700. In this way, the empty placing compartment can be conveyed from back to front while the single piece product is baked, so as to realize the automatic loading and unloading of the single piece product.

[0081] As shown in Figure 5As shown, further, the box conveying assembly 600 of the present embodiment specifically comprises a first belt line 610, a second belt line 620, a third belt line 630, and a box pushing member 640. The first belt line 610 is arranged on the box outputting input assembly 500 and is used to convey the placing box towards the outside of the furnace shell 200. The second belt line 620 is arranged on the outside of the furnace shell 200 and extends along the conveying direction, and the leading end of the second belt line 620 is connected with the output end of the first belt line 610. The third belt line 630 is arranged on the box loading output assembly 700 and is used to convey the placing box towards the inside of the furnace shell 200, and the third belt line 630 is connected with the trailing end of the second belt line 620. The box pushing member 640 is arranged at the trailing end of the second belt line 620 and is used to push the placing box at the trailing end of the second belt line 620 to the third belt line 630. For the convenience of structural description, the box conveying assembly 600 is arranged on the right side of the outside of the furnace shell 200, and the specific structure is that the first belt line 610 can be arranged on the front and back two side edges of the first lifting platform 512, so that the middle part of the first lifting platform 512 can carry the placing box, and the front and back two side parts abut against the lower part of the placing box and convey the placing box. The conveying direction of the first belt line 610 is from left to right. The second belt line 620 is arranged on the right side of the outside of the furnace shell 200, and the conveying direction of the second belt line 620 is from back to front. The first lifting platform 512 can directly convey the placing box from left to right to the trailing end of the second belt line 620, and the placing box is conveyed forward by the second belt line 620. When reaching the leading end of the second belt line 620, the placing box is pushed towards the left by the box pushing member 640, so as to push the placing box to the third belt line 630. The third belt line 630 is arranged on the front and back two side edges of the second lifting platform 711, and the placing box is conveyed along the third belt line 630 from right to left, so that the empty placing box is sent to the position corresponding to the front end of the surrounding warehouse 311.

[0082] The surface of the second belt line 620 in the embodiment is flush with the raised position of the first lifting platform 512 and the raised position of the second lifting platform 711. When the first speed chain conveying line 511 located below moves the placing tray along the rear-to-front direction and conveys it to the first lifting platform 512, the first lifting platform 512 is raised to the raised position to align the placing tray with the input end of the surrounding warehouse 311, and the push plate 521 is driven by the push cylinder 520 to push the single product in the placing tray from the placing tray to the support guide part 330 of the surrounding warehouse 311 at one time, and then the push cylinder 520 drives the push plate 521 to retract. The first belt line 610 on the first lifting platform 512 starts to directly convey the placing tray from left to right to the rear end of the second belt line 620, and the placing tray is conveyed forward by the second belt line 620. When reaching the front end of the second belt line 620, the second lifting platform 711 at this time is located at the raised position, and the placing tray is pushed to the third belt line 630 of the second lifting platform 711 by the box pushing member 640 towards the left side, so that the placing tray is conveyed along the right-to-left direction by the third belt line 630, so that the empty placing tray is sent to the position corresponding to the front end of the surrounding warehouse 311, and the baked product single piece pushed out from the front end of the surrounding warehouse 311 by the empty placing tray is received by the auxiliary box inserting member 720. When the placing tray is full, the second lifting platform 711 is lowered to the lower position and is connected with the second speed chain conveying line 712, and the placing tray containing the baked product single piece is conveyed from the second lifting platform 711 to the finished area by the second speed chain conveying line 712.

[0083] As shown in Figure 1 , Figure 9 Further, the top of the furnace shell 200 of the embodiment is provided with an air suction cooling assembly 800 for sucking the exhaust gas in the baking channel 210 and the surrounding warehouse 311. Some single-piece products produce solder exhaust gas and ink exhaust gas during baking, and long-term breathing of these exhaust gases by workers will cause bad effects on the body. The traditional baking uses an oven for baking, which is low in efficiency and difficult to discharge the exhaust gas. Therefore, the air suction cooling assembly 800 can suck the exhaust gas in the surrounding warehouse 311 at a fixed time or randomly, so that the exhaust gas is discharged and treated in time.

[0084] As shown in Figure 9As shown, further, the air cooling assembly 800 of the embodiment specifically comprises: an air exhaust pipe 810 communicating with the baking channel 210 and the surrounding warehouse 311, for example, a through hole is formed on the upper surface of the heat-conducting warehouse shell 310, so as to realize communication with the air exhaust pipe 810, and a cooling machine 820 communicating with the air exhaust pipe 810 to exhaust waste gas. After working for a period of time, stains will remain on the inner wall of the cooling machine 820, therefore, one side of the cooling machine 820 of the embodiment is provided with a movable scraper 830 connected with a pushing force member 840, and the movable scraper 830 moves along the inner cavity of the cooling machine 820 through the driving of the pushing force member 840 to clean the inner cavity of the cooling machine 820. The pushing force member 840 can be an electric push rod or a pneumatic cylinder.

[0085] Embodiment three

[0086] The embodiment provides a baking method of a high-efficiency tunnel furnace, which is applied to the high-efficiency tunnel furnace described above, and the baking method comprises the following steps:

[0087] In step S100, the single-piece product to be baked is pushed out of the placing box by the box outputting input assembly at the input end of the baking channel, so that the single-piece product enters the surrounding warehouse.

[0088] In step S200, the single-piece product on the support guide part in the surrounding warehouse is pushed by the transmission assembly which moves in the surrounding warehouse and performs a circulating motion, so that multiple batches of single-piece products move and are baked in the surrounding warehouse in a pipeline manner along the conveying direction, and the surrounding warehouse is heated by the heating member.

[0089] In the specific process, only the single-piece product is baked, and the problems of slow heating efficiency, uneven baking heating, and waste of heating energy caused by heating the placing box together are avoided.

[0090] In step S300, the empty placing box on the box outputting input assembly is transported to the box loading output assembly by the box body conveying assembly.

[0091] In step S400, the baked single-piece product is sent into the empty placing box from the surrounding warehouse by the box loading output assembly.

[0092] In the specific process, the single-piece product to be baked is pushed out of the placing box by the box outputting input assembly, so that the single-piece product enters the surrounding warehouse, the empty placing box on the box outputting input assembly is transported to the box loading output assembly by the box body conveying assembly, and the baked single-piece product is sent into the placing box from the surrounding warehouse by the box loading output assembly. Through the above process, the single-piece product can be automatically loaded and unloaded from the placing box, the labor cost is saved, the automation degree is high, and the baking efficiency is improved.

[0093] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-efficiency tunnel furnace, characterized in that, include: A furnace shell, which encloses a baking channel, which extends along the conveying direction; At least one baking chamber is provided in the baking channel along the conveying direction and forms an enclosed channel. The input and output ends of the enclosed channel are both open. A support guide is provided in the baking chamber to support the single product to be baked. A heating element is disposed on the baking chamber to provide heat to the enclosed chamber passage; A transmission component is disposed throughout the enclosed channel and circulates to push multiple batches of the single-piece products in an assembly line manner, so that the multiple batches of the single-piece products move sequentially on the support guide. The support guide includes: a plurality of guide grooves respectively disposed on the inner walls of both sides of the enclosed storage channel, wherein the two side edges of the single product are respectively inserted into the guide grooves on both sides; The input end of the baking channel is provided with a box-out input component, which is used to push the single product to be baked out of the placement frame so that the single product enters the enclosed compartment. The output end of the baking channel is provided with a boxing output component, which is used to send the baked single product from the enclosed channel into the placement frame.

2. The high-efficiency tunnel furnace as described in claim 1, characterized in that, The baking chamber includes a heat-conducting chamber shell, the input and output ends of which are open to form the enclosed chamber channel within the heat-conducting chamber shell; The heating element is disposed on the outer wall of the heat-conducting chamber shell, and the single product is baked through heat conduction through the heat-conducting chamber shell.

3. The high-efficiency tunnel furnace as described in claim 2, characterized in that, The transmission component includes: a chain drive, wherein the chain of the chain drive has an upper chain segment and a lower chain segment extending along the conveying direction, the chain is inserted into the heat-conducting chamber shell such that the upper chain segment is inserted through the enclosed chamber channel and the lower chain segment is located outside the heat-conducting chamber shell; Multiple push plates are spaced apart on the chain to move sequentially into the enclosed channel by the movement of the chain, thereby pushing the single product. The transmission component further includes a pad, which is disposed within the enclosed channel and located between the upper chain segment and the inner bottom surface of the heat-conducting chamber shell to support the upper chain segment.

4. The high-efficiency tunnel furnace as described in claim 1, characterized in that, The box input component includes: a first box moving part, which is used to move the placement frame from the storage area into the input end opening of the enclosed channel; A push cylinder is provided, and a push plate is connected to the piston rod of the push cylinder. The push plate moves toward the input end opening of the enclosed storage channel by the drive of the push cylinder, so as to push the single product in the placement frame from the placement frame onto the support guide of the enclosed storage channel. The first box body moving component includes: a first double-speed chain conveyor line, which is disposed below the push cylinder and conveys a placement frame containing a single product toward the input end opening of the enclosed storage channel; The first lifting platform is movably disposed in the vertical direction between the output end of the first double-speed chain conveyor and the input end of the enclosed storage channel, and is used to receive the placement basket containing single products output by the first double-speed chain conveyor and to transport the placement basket containing single products upward to the input end of the enclosed storage channel.

5. The high-efficiency tunnel furnace as described in claim 4, characterized in that, The boxing output component includes: a second box body moving part, which is used to set an empty placement frame; An auxiliary box-loading component is provided at the output end opening of the enclosed channel. The auxiliary box-loading component is used to push the baked product piece from the output end opening of the enclosed channel into the placement frame on the second box body moving component. The second box-moving component moves the placement frame containing the individual product from the output opening of the enclosed storage channel to the completion area; The second box moving component includes: a second lifting platform, which is movably disposed at the output end of the enclosed compartment in the vertical direction, and receives the baked product unit pushed out from the output end of the enclosed compartment by the auxiliary box insert through an empty placement frame; The second double-speed chain conveyor is located on one side of the second lifting platform and transports the placement frame containing the baked product from the second lifting platform to the finishing area.

6. The high-efficiency tunnel furnace as described in claim 5, characterized in that, The auxiliary box-in component includes a pusher, which is disposed at the input end of the enclosed compartment channel; An auxiliary lifting assembly is connected to the front pusher to drive the front pusher to rise or fall. An auxiliary horizontal pushing component is connected to the auxiliary lifting component to drive the auxiliary lifting component to move along the second housing moving member; The pusher is moved upward into the enclosed compartment by the drive of the auxiliary lifting component, and is located on the side of the baked product facing the input end of the enclosed compartment. By the drive of the auxiliary flat pushing component, the single product at the output end opening of the enclosed compartment is pushed out from the output end opening of the enclosed compartment into the placement frame.

7. The high-efficiency tunnel furnace as described in claim 1, characterized in that, A box conveying component is provided between the box dispensing input component and the box packing output component. The box conveying component is used to convey the empty placement frame on the box dispensing input component to the box packing output component. The box conveying assembly includes: a first belt conveyor, which is disposed on the box input assembly and is used to convey the placement frame toward the outside of the furnace shell; The second belt conveyor is disposed on the outside of the furnace shell and extends along the conveying direction, with the first end of the second belt conveyor connected to the output end of the first belt conveyor. A third conveyor belt is disposed on the boxing output assembly and is used to transport the placement frame toward the inside of the furnace shell. The end of the third conveyor belt is connected to the end of the second conveyor belt. A box pusher is disposed at the tail end of the second belt line and is used to push the placement frame at the tail end of the second belt line onto the third belt line.

8. The high-efficiency tunnel furnace as described in claim 7, characterized in that, The top of the furnace shell is provided with an air intake and cooling assembly, which is used to draw out the exhaust gas in the baking channel and the enclosed chamber. The air intake cooling assembly includes: an exhaust pipe, which connects the baking channel and the enclosed chamber. A cooler connected to the exhaust pipe for extracting waste gas; A movable scraper is provided on one side of the cooler. The movable scraper is connected to a pushing force component. The movable scraper moves along the inner cavity of the cooler by being driven by the pushing force component, so as to clean the inner cavity of the cooler.

9. A baking method in a high-efficiency tunnel oven, characterized in that, Applied to the high-efficiency tunnel oven as described in any one of claims 1-8, wherein the baking method includes the steps of: The single product to be baked is pushed out of the placement frame through the box-out input component at the input end of the baking channel, so that the single product enters the enclosed storage channel; Single-piece products on the support guides that enter the enclosed storage channel are pushed by a transmission component that circulates within the enclosed storage channel, so that multiple batches of the single-piece products move and bake in an assembly line manner along the conveying direction within the enclosed storage channel, wherein the enclosed storage channel is heated by a heating element. The box conveying assembly is used to convey the empty placement frame on the box input assembly to the box output assembly; The baked single-piece product is fed from the enclosed storage channel into an empty placement frame via the boxing output component.

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