Packaging tunnel furnace convenient to clean

Abstract

The invention discloses a packaging tunnel furnace convenient to clean, and belongs to the technical field of drying equipment. In order to solve the problems that due to the design of a bottom air duct of an existing tunnel furnace, cleaning and maintenance are complex, and sediment easily causes potential safety hazards, the thermal cycle baking device is integrated at the upper end of equipment and comprises a heat preservation wall, a circulation assembly and an air duct assembly which are detachably connected. The circulation assembly and the air duct assembly of the thermal circulation baking device are integrated at the upper end of the device, the detachable heat preservation wall, the packaging plate and other structures are adopted, a bottom protection assembly does not need to be disassembled during cleaning, the air duct and inner wall sediments can be directly contacted only by disassembling part of modules from the side direction or the upper portion of the device, the shutdown maintenance time is greatly shortened, and the maintenance efficiency is improved. The technical defects that in the prior art, a bottom air channel is complex to disassemble and consumes long time are overcome. The hot air is transversely and parallelly blown to the packaged objects in the carrier through the air guide assembly, the curing and drying uniformity of the packaged objects in the carrier is ensured, and therefore the quality of the packaged objects is improved.

Description

Technical Field

[0001] The present invention relates to the field of drying equipment, and in particular to an encapsulation tunnel furnace that is convenient for cleaning. Background Art

[0002] The LED encapsulation process is a key link in the manufacturing of semiconductor lighting devices, and the curing and drying process has a decisive impact on the performance and reliability of the devices. As the core equipment for this process, the tunnel curing furnace realizes the efficient curing of the colloidal material through a hot air circulation system. However, it is found in actual production that encapsulation materials such as epoxy resin and silicone rubber will continuously volatilize low-molecular-weight organic substances during the high-temperature curing process. During the movement of such gaseous substances with the hot air flow, they are extremely likely to solidify and deposit on the inner wall of the furnace body and the surface of the circulation air duct.

[0003] The current mainstream tunnel furnaces generally adopt a bottom-integrated air duct design, which centrally arranges the circulation fan, heating components and the main air duct in the equipment base area. Although this structure is beneficial to the overall compactness of the equipment, it leads to two major technical defects: First, during the deposition of volatiles in the vertical direction, due to the action of gravity, it is easier to form a dense coking layer on the inner wall of the bottom air duct, and it is necessary to stop the machine for cleaning about every half month; Second, for conventional cleaning and maintenance, it is necessary to completely disassemble the bottom protective cover and the internal supporting and conveying structures, resulting in a long cleaning time for a single time and seriously affecting the continuous production rhythm.

[0004] Therefore, it is necessary to design an encapsulation tunnel furnace that is convenient for cleaning. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an encapsulation tunnel furnace that is convenient for cleaning, by arranging the circulation fan, heating components and the main air duct in the upper region of the equipment and designing a detachable structure, to overcome the problems of many disassembly and assembly structures before and after cleaning of the existing tunnel furnace, long cleaning time, and serious impact on the continuous production rhythm.

[0006] To solve the above technical problems, an embodiment of the present invention discloses an encapsulation tunnel furnace that is convenient for cleaning, including: A loading device, arranged at the very front end of the encapsulation tunnel furnace, for loading the carrier loaded with the encapsulated items; A short baking device, arranged at the rear end of the loading device, for quickly curing the encapsulated items loaded in the carrier; A palletizing device, arranged at the rear end of the short baking device, for palletizing the carrier; A long baking device, arranged at the rear end of the palletizing device, for making the encapsulated items reach a preset dryness; An unloading device, arranged at the rear end of the long baking device, for unloading the carrier; A stepping device is longitudinally arranged below the feeding device, short baking device, palletizing device, long baking device and discharging device, and is used to transport the carrier from the front end to the rear end of the encapsulation tunnel furnace; Among them, heat circulation baking devices are arranged in the housings of both the short baking device and the long baking device. The heat circulation baking device includes: Heat preservation walls, which are wrapped around the tunnel to reduce heat loss; the heat preservation walls on both sides are detachably connected; Circulation components, which are detachably penetrated and arranged on the upper heat preservation wall; Air duct components, which are arranged below the upper heat preservation wall, and the lower part of the circulation components extends into the air duct components; Heating components, which are arranged on both sides inside the air duct components; Encapsulation plates, there are three of them, which are respectively arranged on the inner sides of the heat preservation walls on both sides and above the lower heat preservation wall, and all keep intervals with the corresponding heat preservation walls to form air supply channels; the encapsulation plates on both sides are detachably connected; Air guiding components, which are structures with an internal cavity, an open lower end, and openings on the two transverse walls, and are longitudinally and evenly spaced above the lower encapsulation plate, and the internal cavity thereof is communicated with the lower air supply channel; Support seats, which are arranged between adjacent air guiding components and are used to support the carrier.

[0007] As some embodiments of the present invention, the carrier in the short baking device is transported in a single layer, while in the long baking device, the carrier is transported in three layers. Correspondingly, the air guiding components in the long baking device are higher than those in the short baking device, so that the encapsulated articles loaded in the carrier can be baked evenly and sufficiently. Of course, in other embodiments of the present application, the stacking layers of the carrier in the short baking device and the long baking device can be adjusted according to actual production needs.

[0008] As some embodiments of the present invention, the circulation components include a circulation driving part and a circulation fan. The circulation driving part is arranged above the upper heat preservation wall, and the output shaft of the circulation driving part passes through the upper heat preservation wall and is connected to the circulation fan, and the circulation fan is located in the air duct component.

[0009] As a preference of some embodiments of the present invention, the circulation driving part is a reduction motor.

[0010] As some embodiments of the present invention, there is also a fresh air filtering component, which is used to filter and supplement the fresh air entering the short baking device or the long baking device. The fresh air filtering component is arranged above the upper heat preservation wall and is communicated with the air duct component through a fresh air channel opened in the upper heat preservation wall, and the fresh air channel is located between the circulation fan and the heating component.

[0011] As some embodiments of the present invention, the palletizing device includes: A transverse movement component, which is fixedly arranged on the frame of the palletizing device; The longitudinal movement component is slidably arranged on the transverse movement component and can be driven by the transverse movement component to move horizontally. The vertical movement component is slidably arranged on the longitudinal movement component and can be driven by the longitudinal movement component to move vertically. The manipulator is slidably arranged on the vertical movement component and can be driven by the vertical movement component to move vertically, and is used to grab and move the carrier. The positioning rod is used to block the movement of the unstacked carrier.

[0012] As some embodiments of the present invention, the transverse movement component includes a transverse drive member, a transverse lead screw, a transverse sliding member, and a transverse seat. The transverse drive member and the transverse sliding member are fixedly arranged on the frame of the stacking device. The output end of the transverse drive member is fixedly connected to the transverse lead screw, and the transverse lead screw drives the transverse seat to move horizontally. The transverse sliding member provides support and guidance for the transverse seat, making its horizontal movement more accurate and stable.

[0013] As a preference of some embodiments of the present invention, the transverse drive member is a motor, and transverse sliding members are arranged on both sides of the transverse lead screw. The transverse sliding member is a slider rail assembly.

[0014] As some embodiments of the present invention, the longitudinal movement component includes a longitudinal drive member, a longitudinal lead screw, a longitudinal sliding member, and a longitudinal seat. The longitudinal drive member and the longitudinal sliding member are fixedly arranged on the transverse seat. The output end of the longitudinal drive member is fixedly connected to the longitudinal lead screw, and the longitudinal lead screw drives the longitudinal seat to move vertically. The longitudinal sliding member provides support and guidance for the longitudinal seat, making its vertical movement more accurate and stable.

[0015] As a preference of some embodiments of the present invention, the longitudinal drive member is a motor, and the longitudinal sliding member is a slider rail assembly.

[0016] As some embodiments of the present invention, the vertical movement component includes a vertical drive member, a vertical lead screw, a vertical sliding member, and a vertical seat. The vertical drive member and the vertical sliding member are fixedly arranged on the longitudinal seat. The output end of the vertical drive member is fixedly connected to the vertical lead screw, and the vertical lead screw drives the vertical seat to move vertically. The vertical sliding member provides support and guidance for the vertical seat, making its vertical movement more accurate and stable.

[0017] As a preference of some embodiments of the present invention, the vertical drive member is a motor, and the vertical sliding member is a slider rail assembly.

[0018] As some embodiments of the present invention, the manipulator includes a linear drive member and a jaw. The linear drive member is fixedly arranged on the vertical seat, and its output end is fixedly connected to the jaw.

[0019] As a preference of some embodiments of the present invention, the linear drive member is a double-acting cylinder, which can control the jaws at both output ends to move synchronously and in opposite directions, so as to realize the grasping or placing of the carrier.

[0020] Preferably, in some embodiments of the present invention, in order to more accurately understand the positional relationship between the manipulator and the vehicle in the current state, a detector is further provided on one side of the linear driving member.

[0021] In some embodiments of the present invention, the stepping device includes: A lifting driving member, fixedly arranged at the lower end of the encapsulation tunnel furnace; A driving rod, fixedly connected to the output shaft of the lifting driving member and rotatably arranged at the lower end of the encapsulation tunnel furnace; A cam, fixedly arranged on the driving rod; A push rod, the lower end of which cooperates with the cam, and the upper end of which passes through the lower heat insulation wall and enters the lower part inside the thermal cycle baking device; A jacking frame, horizontally arranged at the lower position inside the thermal cycle baking device, and the lower end of which is fixedly connected to the push rod; A jacking rod, fixedly arranged above the jacking frame, the horizontal quantity and position of which correspond to the support seats, and the upper end of which passes through the bottom of the support seats; A longitudinal moving frame, slidably arranged inside the support seats, and can be jacked up by the jacking rod to lift the vehicle located inside the support seats; A stepping driving member, used to drive the longitudinal moving frame to slide longitudinally.

[0022] Preferably, in some embodiments of the present invention, in order to make the vertical movement of the push rod smooth and avoid large movement resistance and excessive wear caused by direct friction between the push rod and the lower heat insulation wall, a linear bearing for the vertical sliding connection between the push rod and the heat insulation wall is further provided.

[0023] Preferably, in some embodiments of the present invention, in order to make the longitudinal movement of the longitudinal moving frame stable after the jacking rod jacks up the longitudinal moving frame, an installation part with rollers is arranged at the top of the jacking rod.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: While ensuring the thermal performance of the equipment, it systematically solves the industry pain points of difficult cleaning, high maintenance cost, and prominent safety hazards of the existing tunnel furnace, specifically: 1. Significantly improve the cleaning and maintenance efficiency. By integrating the circulation component and the air duct component of the thermal cycle baking device at the upper end of the equipment and adopting detachable structures such as heat insulation walls and encapsulation plates, it is not necessary to disassemble the bottom protection component during cleaning. Only by disassembling some modules from the side or above of the equipment can the air duct and the inner wall deposits be directly contacted, greatly shortening the shutdown maintenance time and solving the technical defects of complex disassembly and long time consumption of the bottom air duct in the prior art.

[0025] 2. Improve drying uniformity and thermal energy utilization rate: Through the air supply channel formed by the air duct assembly, the heat preservation wall, and the encapsulation board, and then using the air guiding assembly to blow the hot air horizontally and parallelly over the encapsulated items in the carrier, so that each encapsulated item in the carrier receives hot air at the same temperature and speed, ensuring the curing and drying uniformity of the encapsulated items in the carrier. The overall air duct is short and is all arranged inside the heat preservation wall, reducing the heat loss on the path, thereby improving the thermal energy utilization rate.

[0026] 3. Enhance the stability and quality of equipment operation: The palletizing device realizes the efficient palletizing and transfer of the carrier through the multi-axis linkage of the horizontal movement, vertical movement, and vertical movement components, combined with the precise clamping of the manipulator and the positioning feedback of the detector; the stepping device adopts the cooperative drive of the cam and the jacking rod to ensure the smoothness and repeated positioning accuracy of the carrier's stepping movement, thereby improving the control ability of the overall production beat. The fresh air filtering component is arranged between the circulation fan and the heating component, effectively intercepting external impurities from entering the air duct system. At the same time, the fresh air is heated by the heating component as soon as it enters, avoiding the contact between the cold air and the encapsulated items.

[0027] 4. High adaptability: By differentiating the height of the air guiding components of the short baking device and the long baking device and the number of layers of carrier palletizing, different duration requirements of different curing processes can be matched. And realizing the synchronous and efficient drying of multiple layers of carriers within the limited equipment length can effectively improve the space utilization rate and production capacity adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for describing the specific embodiments or the prior art. Obviously, the drawings in the following description are only one embodiment of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 It is a schematic three-dimensional structure diagram of an embodiment of the present invention; Figure 2 It is a schematic internal structure diagram of the short baking device of an embodiment of the present invention; Figure 3 It is a schematic internal structure diagram of the long baking device of an embodiment of the present invention; Figure 4 It is Figure 3 A partial enlarged schematic diagram at position A in Figure 5 It is Figure 3 A partial enlarged schematic diagram at position B in Figure 6 It is a schematic diagram of the hot air circulation inside the short baking device of an embodiment of the present invention; Figure 7 It is Figure 6Partial enlarged view at position C in [the figure]; Figure 8 Schematic diagram of hot air circulation inside the long baking device according to an embodiment of the present invention; Figure 9 Schematic diagram of the internal structure of the palletizing device according to an embodiment of the present invention; Figure 10 is Figure 9 Partial enlarged view at position D in [the figure].

[0030] The reference numerals in the drawings are: 1, loading device; 2, short baking device; 3, palletizing device; 31, transverse movement assembly; 311, transverse movement driving member; 312, transverse movement lead screw; 313, transverse movement sliding member; 314, transverse movement seat; 32, longitudinal movement assembly; 321, longitudinal movement driving member; 322, longitudinal movement seat; 33, vertical movement assembly; 331, vertical movement driving member; 332, vertical movement lead screw; 333, vertical movement sliding member; 334, vertical movement seat; 34, manipulator; 341, linear driving member; 342, clamping jaw; 343, detector; 4, long baking device; 5, unloading device; 6, stepping device; 61, lifting driving member; 62, driving rod; 63, cam; 64, ejector rod; 641, linear bearing; 65, lifting frame; 66, lifting rod; 661, mounting portion; 67, longitudinal movement frame; 7, hot circulation baking device; 71, circulation assembly; 711, circulation driving member; 712, circulation fan; 72, air duct assembly; 73, heating assembly; 74, heat preservation wall; 75, air supply channel; 76, encapsulation board; 77, short air guiding assembly; 78, support seat; 79, fresh air filtering assembly; 791, fresh air channel; 9, carrier. Detailed implementation manners

[0031] To make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the technical solutions in the detailed implementation manners of the present invention are clearly and completely described below to further illustrate the present invention. Obviously, the described detailed implementation manners are only a part of the implementation manners of the present invention, rather than all the styles.

[0032] Embodiment 1: This embodiment discloses a packaging tunnel furnace that is easy to clean, as Figure 1 shown, including: A loading device 1, arranged at the front end of the packaging tunnel furnace, for loading the carrier 9 loaded with packaged items; A short baking device 2, arranged at the rear end of the loading device 1, for quickly curing the packaged items loaded in the carrier 9; A palletizing device 3, arranged at the rear end of the short baking device 2, for palletizing the carrier 9; A long baking device 4, arranged at the rear end of the palletizing device 3, for making the packaged items reach a preset dryness; The blanking device 5 is arranged at the rear end of the long baking device 4 and is used for blanking the carrier 9. The stepping device 6 is longitudinally arranged below the loading device 1, the short baking device 2, the palletizing device 3, the long baking device 4 and the blanking device 5 and is used for transporting the carrier 9 from the front end to the rear end of the encapsulation tunnel furnace. Among them, heat circulation baking devices 7 are arranged in the outer shells of the short baking device 2 and the long baking device 4. As Figures 2 to 8 shown, the heat circulation baking device 7 includes: The heat preservation wall 74 wraps around the tunnel on all sides and is used for reducing heat loss; the heat preservation walls 74 on both sides are detachably connected. The circulation component 71 is detachably penetrated and arranged on the upper heat preservation wall 74. The air duct component 72 is arranged below the upper heat preservation wall 74, and the lower part of the circulation component 71 extends into the air duct component 72. The heating component 73 is arranged on both sides inside the air duct component 72. There are three encapsulation plates 76, which are respectively arranged on the inner sides of the heat preservation walls 74 on both sides and above the lower heat preservation wall, and all keep intervals with the corresponding heat preservation walls 74 to form a air supply channel 75; the encapsulation plates 76 on both sides are detachably connected. The air guiding component 77 has an internal cavity, an open lower end and openings on the two transverse walls, and is longitudinally and evenly spaced above the lower encapsulation plate 76, and its internal cavity is communicated with the lower air supply channel 75. The support seats 78 are arranged between adjacent air guiding components 77 and are used for supporting the carrier 9.

[0033] In this embodiment, the carrier 9 in the short baking device 2 is transported in a single layer, while in the long baking device 4, the carrier 9 is transported in three layers (that is, in the case of the same length, the baking time of the long baking device 4 is three times that of the short baking device 2). Correspondingly, the air guiding component 77 in the long baking device 4 is higher than the air guiding component 77 in the short baking device 2, so that the encapsulated items loaded in the carrier 9 can be baked evenly and sufficiently. Of course, in other embodiments of the present application, the stacking layers of the carrier 9 in the short baking device 2 and the long baking device 4 can be adjusted according to actual production needs. And the length of the long baking device 4 is 2.5 times that of the short baking device 2, so that the baking time of the long baking device 4 in this easy-to-clean encapsulation tunnel furnace is 7.5 times that of the short baking device 2.

[0034] As Figures 6 to 8As shown in the figure, the hot air in the short baking device 2 or the long baking device 4 forms hot wind driven by the circulation component 71, moves horizontally to both sides along the air duct component 72. During this process, the hot wind is further heated by the heating component 73, then enters the air supply channels 75 on both sides, then enters the air supply channel 75 at the lower end, and then enters each air guiding component 77 respectively to form horizontal hot wind, baking the packaged items located between adjacent air guiding components 77. Then the hot wind moves upward, enters the air duct component 72 from below the air duct component 72, and is then driven by the circulation component 71 to move horizontally to both sides along the air duct component 72, thus forming a cycle.

[0035] Among them, the circulation component 71 includes a circulation driving part 711 and a circulation fan 712. The circulation driving part 711 is arranged above the upper heat preservation wall 74. The output shaft of the circulation driving part 711 passes through the upper heat preservation wall 74 and is connected to the circulation fan 712. The circulation fan 712 is located in the air duct component 72. In this embodiment, the circulation driving part 711 is a reduction motor.

[0036] It further includes a fresh air filtering component 79 for filtering and supplementing the fresh air entering the short baking device 2 or the long baking device 4. The fresh air filtering component 79 is arranged above the upper heat preservation wall 74 and is communicated with the air duct component 72 through a fresh air channel 791 opened in the upper heat preservation wall 74, and the fresh air channel 791 is located between the circulation fan 712 and the heating component 73.

[0037] In this embodiment, sealing doors are provided on both sides of the short baking device 2 and the long baking device 4. Since the air duct component 72 of the easy-to-clean packaging tunnel furnace in this embodiment is located at the upper end and the circulation component 71 is detachably connected, the sealing doors on both sides, the heat preservation wall 74 and the packaging board 76 can also be easily opened. Thus, when a large amount of packaging glue adheres to each air duct after the equipment has been running for a period of time, the circulation component 71 can be removed from above for cleaning. At the same time, the sealing doors on both sides can be opened, the heat preservation walls 74 and the packaging boards 76 on both sides can be removed, and then the air duct component 72 and the air supply channel 75 at the lower end can be conveniently cleaned from both sides. If necessary, the air guiding component 77 can also be conveniently cleaned from both sides or disassembled from both sides for thorough cleaning.

[0038] Embodiment 2: This embodiment is another easy-to-clean packaging tunnel furnace based on Embodiment 1. As Figure 9 、 Figure 10 shown, the palletizing device 3 includes: A transverse moving component 31, fixedly arranged on the frame of the palletizing device 3; A longitudinal moving component 32, slidably arranged on the transverse moving component 31 and can be driven by the transverse moving component 31 to move horizontally; A vertical moving component 33, slidably arranged on the longitudinal moving component 32 and can be driven by the longitudinal moving component 32 to move longitudinally; The manipulator 34 is slidably arranged on the vertical moving component 33 and can be driven by the vertical moving component 33 to move vertically for grasping and moving the carrier 9. The positioning rod 35 is used to block the movement of the unstacked carrier 9.

[0039] Among them, the transverse moving component 31 includes a transverse moving driving part 311, a transverse moving lead screw 312, a transverse moving sliding part 313 and a transverse moving seat 314. The transverse moving driving part 311 and the transverse moving sliding part 313 are fixedly arranged on the frame of the stacking device 3. The output end of the transverse moving driving part 311 is fixedly connected with a transverse moving lead screw 312. The transverse moving lead screw 312 drives the transverse moving seat 314 to move horizontally. The transverse moving sliding part 313 provides support and guidance for the transverse moving seat 314 to make its horizontal movement more accurate and stable. In this embodiment, the transverse moving driving part 311 is a motor, and transverse moving sliding parts 313 are arranged on both sides of the transverse moving lead screw 312. The transverse moving sliding part 313 is a slider rail assembly.

[0040] The longitudinal moving component 32 includes a longitudinal moving driving part 321, a longitudinal moving lead screw (not shown in the figure), a longitudinal moving sliding part (not shown in the figure) and a longitudinal moving seat 322. The longitudinal moving driving part 321 and the longitudinal moving sliding part are fixedly arranged on the transverse moving seat 314. The output end of the longitudinal moving driving part 321 is fixedly connected with the longitudinal moving lead screw. The longitudinal moving lead screw drives the longitudinal moving seat 322 to move longitudinally. The longitudinal moving sliding part provides support and guidance for the longitudinal moving seat 322 to make its longitudinal movement more accurate and stable. In this embodiment, the longitudinal moving driving part 321 is a motor, and the longitudinal moving sliding part is a slider rail assembly.

[0041] The vertical moving component 33 includes a vertical moving driving part 331, a vertical moving lead screw 332, a vertical moving sliding part 333 and a vertical moving seat 334. The vertical moving driving part 331 and the vertical moving sliding part 333 are fixedly arranged on the longitudinal moving seat 322. The output end of the vertical moving driving part 331 is fixedly connected with a vertical moving lead screw 332. The vertical moving lead screw 332 drives the vertical moving seat 334 to move vertically. The vertical moving sliding part 333 provides support and guidance for the vertical moving seat 334 to make its vertical movement more accurate and stable. In this embodiment, the vertical moving driving part 331 is a motor, and the vertical moving sliding part 333 is a slider rail assembly.

[0042] The manipulator 34 includes a linear driving part 341 and a jaw 342. The linear driving part 341 is fixedly arranged on the vertical moving seat 334, and its output end is fixedly connected with the jaw 342.

[0043] In this embodiment, the linear driving part 341 is a double-acting cylinder, which can control the jaws 342 at both output ends to move synchronously and in opposite directions, so as to realize the grasping or placing of the carrier 9.

[0044] In order to more accurately understand the positional relationship between the manipulator 34 and the carrier 9 in the current state, a detector 343 is also arranged on one side of the linear driving part 341.

[0045] The operating principle of the palletizing device 3 is as follows: The positioning rod 35 intercepts the carrier 9 flowing out of the short baking device 2. The linear drive member 341 is controlled to extend to open the manipulator 34. Then, the cross-movement assembly 31, the longitudinal movement assembly 32, and the vertical movement assembly 33 are controlled to cooperate in movement, so that the manipulator 34 moves to both sides of the carrier 9. The linear drive member 341 is controlled to shorten, so that the manipulator 34 clamps the target carrier 9. Again, the cross-movement assembly 31, the longitudinal movement assembly 32, and the vertical movement assembly 33 are controlled to cooperate in movement to move the manipulator 34 and the carrier 9 it clamps above the palletizing position. Then, the linear drive member 341 is controlled to extend to open the manipulator 34, and the carrier 9 is placed at the palletizing position. By repeating the above actions, the palletizing operation of the carrier 9 after flowing out of the short baking device 2 and before entering the long baking device 4 can be completed.

[0046] As Figure 5 、 Figure 7 shown, the stepping device 6 includes: A lifting drive member 61, fixedly arranged at the lower end of the encapsulation tunnel furnace; A drive rod 62, fixedly connected to the output shaft of the lifting drive member 61 and rotatably arranged at the lower end of the encapsulation tunnel furnace; A cam 63, fixedly arranged on the drive rod 62; A push rod 64, with the lower end cooperating with the cam 63 and the upper end passing through the lower heat insulation wall 74 and entering the lower part inside the heat circulation baking device 7; A jacking frame 65, horizontally arranged at the lower part inside the heat circulation baking device 7, with the lower end fixedly connected to the push rod 64; A jacking rod 66, fixedly arranged above the jacking frame 65, with the horizontal quantity and position corresponding to the support seat 78, and the upper end passing through the bottom of the support seat 78; A longitudinal movement frame 67, slidably arranged inside the support seat 78, and can be jacked up by the jacking rod 66 to lift the carrier 9 located inside the support seat 78; A stepping drive member (not shown in the figure), used to drive the longitudinal movement frame 67 to slide longitudinally.

[0047] The operating principle of the stepping device 6 is as follows: The lifting drive member 61 drives the drive rod 62 to rotate. The drive rod 62 drives the cam 63 to rotate. The cam 63 drives the push rod 64 to move up and down reciprocally. The push rod 64 drives the jacking frame 65 to move up and down reciprocally. The jacking frame 65 drives the jacking rod 66 to move up and down reciprocally. The jacking rod 66 drives the longitudinal movement frame 67 to move up and down reciprocally. When the longitudinal movement frame 67 rises, it lifts the carrier 9 from the support seat 78. Then, the stepping drive member is controlled to drive the longitudinal movement frame 67 to move backward, thereby driving the carrier 9 thereon to move backward. Then, the longitudinal movement frame 67 descends, and the carrier 9 that has moved backward is placed on the support seat 78 again. After the longitudinal movement frame 67 is disengaged from the carrier 9, the stepping drive member is controlled to drive the longitudinal movement frame 67 to reset forward. By repeating the above actions, the stepping movement of the carrier 9 is realized.

[0048] Among them, in order to enable the vertical movement of the ejector rod 64 to be smooth and avoid the large movement resistance and excessive wear caused by the direct friction between the ejector rod 64 and the lower heat preservation wall 74, a linear bearing 641 for the vertical sliding connection between the ejector rod 64 and the heat preservation wall 74 is also provided in this embodiment.

[0049] In order to make the longitudinal movement of the longitudinal movement frame 67 stable after the jacking rod 66 jacks up the longitudinal movement frame 67, a mounting part 661 with rollers is provided at the top of the jacking rod 66 in this embodiment.

[0050] The main technical features, basic principles and related advantages of the present invention have been described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary specific embodiments, and without departing from the concept or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the above specific embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced by the present invention.

[0051] In addition, it should be understood that although this specification is described according to each embodiment, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An easy-to-clean encapsulation tunnel furnace, comprising: A loading device (1), arranged at the front end of the packaging tunnel furnace, is used to load a carrier (9) loaded with packaged articles; A short-baking device (2) is arranged at the rear end of the loading device (1) and is used to quickly solidify the packaged articles loaded in the carrier (9); A palletizing device (3), arranged at the rear end of the short baking device (2), for palletizing the carriers (9); A long baking device (4), arranged at the rear end of the stacking device (3), is used to make the packaged articles reach a preset degree of dryness; A material unloading device (5), arranged at the rear end of the long roasting device (4), for unloading materials from the carrier (9); A stepping device (6) is longitudinally arranged below the loading device (1), the short baking device (2), the stacking device (3), the long baking device (4) and the unloading device (5), and is used to transport the carrier (9) from the front end to the rear end of the packaging tunnel furnace; The invention is characterized in that a thermal cycle baking device (7) is arranged in the outer shell of the short baking device (2) and the long baking device (4), and the thermal cycle baking device (7) comprises: The heat-insulating wall (74) is wrapped around the tunnel to reduce heat loss; the heat-insulating walls (74) on both sides are detachably connected; A circulation assembly (71) is detachably mounted on and penetrates the heat-insulating wall (74) at the upper end; The air duct assembly (72) is arranged below the upper end of the heat preservation wall (74), and the lower part of the circulation assembly (71) extends into the air duct assembly (72); A heating assembly (73) is arranged on both sides of the air duct assembly (72); The packaging plates (76) are provided with three pieces, which are respectively arranged on the inner sides of the insulation walls (74) on both sides and above the insulation wall at the lower end, and are spaced apart from the corresponding insulation walls (74) to form air supply channels (75); the packaging plates (76) on both sides are detachably connected; The air guide assembly (77) is a structure having an internal cavity, an opening at the lower end, and two lateral openings on the walls, and is disposed above the lower end packaging plate (76) at uniform intervals in the longitudinal direction, and its internal cavity is connected to the air supply channel (75) at the lower end; The support seat (78) is arranged between adjacent air guide components (77) and is used to support the carrier (9).

2. The easy-to-clean encapsulation tunnel furnace according to claim 1, characterized in that: The circulation assembly (71) comprises a circulation drive member (711) and a circulation fan (712); the circulation drive member (711) is arranged above the upper end heat preservation wall (74); the output shaft of the circulation drive member (711) passes through the upper end heat preservation wall (74) and is connected to the circulation fan (712); and the circulation fan (712) is located in the air duct assembly (72).

3. The easy-to-clean encapsulation tunnel furnace according to claim 2, characterized in that: It also includes a fresh air filter assembly (79) for filtering and replenishing the fresh air entering the short baking device (2) or the long baking device (4). The fresh air filter assembly (79) is arranged above the upper insulation wall (74) and is connected to the air duct assembly (72) through a fresh air channel (791) opened in the upper insulation wall (74), and the fresh air channel (791) is located between the circulation fan (712) and the heating assembly (73).

4. The easy-to-clean encapsulation tunnel furnace according to claim 1, characterized in that: The palletizing device (3) comprises: A transverse movement assembly (31) is fixedly mounted on a frame of the palletizing device (3); A longitudinal moving assembly (32) is slidably disposed on the transverse moving assembly (31) and can be driven by the transverse moving assembly (31) to move transversely; A vertical movement component (33) is slidably disposed on the longitudinal movement component (32) and can be driven by the longitudinal movement component (32) to move longitudinally; A manipulator (34) is slidably mounted on the vertical moving assembly (33) and can be driven by the vertical moving assembly (33) to move vertically, and is used to grab and move the carrier (9); The positioning rod (35) is used to prevent the unstacking carrier (9) from moving.

5. The easy-to-clean encapsulation tunnel furnace according to claim 4, characterized in that: The transverse movement assembly (31) comprises a transverse movement driving member (311), a transverse movement screw rod (312), a transverse movement sliding member (313) and a transverse movement seat (314); the transverse movement driving member (311) and the transverse movement sliding member (313) are fixedly arranged on a frame of the stacking device (3); the output end of the transverse movement driving member (311) is fixedly connected to the transverse movement screw rod (312); the transverse movement screw rod (312) drives the transverse movement seat (314) to move transversely; The longitudinal movement assembly (32) comprises a longitudinal movement driving member (321), a longitudinal movement screw rod, a longitudinal movement sliding member and a longitudinal movement seat (322); the longitudinal movement driving member (321) and the longitudinal movement sliding member are fixedly arranged on the transverse movement seat (314); the output end of the longitudinal movement driving member (321) is fixedly connected to the longitudinal movement screw rod, and the longitudinal movement screw rod drives the longitudinal movement seat (322) to move longitudinally; The vertical movement assembly (33) comprises a vertical movement driving member (331), a vertical movement screw rod (332), a vertical movement sliding member (333) and a vertical movement seat (334); the vertical movement driving member (331) and the vertical movement sliding member (333) are fixedly arranged on the longitudinal movement seat (322); the output end of the vertical movement driving member (331) is fixedly connected to the vertical movement screw rod (332); the vertical movement screw rod (332) drives the vertical movement seat (334) to move vertically.

6. The easy-to-clean encapsulation tunnel furnace according to claim 5, characterized in that: The manipulator (34) comprises a linear drive member (341) and a clamping claw (342); the linear drive member (341) is fixedly arranged on the vertical displacement seat (334), and the output end thereof is fixedly connected to the clamping claw (342).

7. The easy-to-clean encapsulation tunnel furnace according to claim 6, characterized in that: The linear driving member (341) is a bidirectional cylinder, and a detector (343) is also provided on one side of the linear driving member (341).

8. The easy-to-clean encapsulation tunnel furnace according to claim 4, characterized in that: The stepping device (6) comprises: A lifting drive member (61) is fixedly arranged at the lower end of the packaging tunnel furnace; A driving rod (62) is fixedly connected to the output shaft of the lifting driving member (61) and is rotatably disposed at the lower end of the packaging tunnel furnace; A cam (63) is fixedly mounted on the driving rod (62); A push rod (64), the lower end of which cooperates with the cam (63), and the upper end of which passes through the heat-insulating wall (74) at the lower end and enters the lower part of the heat-circulating baking device (7); A lifting frame (65) is transversely arranged at a lower position inside the thermal cycle baking device (7), and the lower end is fixedly connected to the lifting rod (64); A lifting rod (66) is fixedly arranged above the lifting frame (65), the horizontal number and position of which correspond to the support seat (78), and the upper end of which passes through the bottom of the support seat (78); A longitudinal moving frame (67) is slidably disposed in a supporting seat (78) and can be lifted by a lifting rod (66) to lift a carrier (9) located in the supporting seat (78); The stepping drive member is used to drive the longitudinal moving frame (67) to slide longitudinally.

9. The easy-to-clean encapsulation tunnel furnace according to claim 8, characterized in that: A linear bearing (641) is also provided for vertical sliding connection between the jacking rod (64) and the heat-insulating wall (74); a mounting portion (661) with a roller is also provided at the top of the jacking rod (66).

10. The easy-to-clean encapsulation tunnel furnace according to claim 1, characterized in that: The carrier (9) in the short baking device (2) is a single-layer conveyor, and the carrier (9) in the long baking device (4) is a three-layer conveyor. The air guide component (77) in the long baking device (4) is higher than the air guide component (77) in the short baking device (2).

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