Multi-layer continuous automatic heating and cooling baking oven

Abstract

A plurality of heating units are connected in series in a bent mode, the upper portions and the lower portions of the two sides of heating furnace bodies are provided with feeding ports communicating with heating cavities correspondingly, the feeding ports in the adjacent pair of heating furnace bodies communicate, and the feeding ports in the adjacent pair of heating furnace bodies communicate with the feeding ports in the adjacent pair of heating furnace bodies. A second rotating shaft and a first rotating shaft in the vertical feeding mechanism adjacently extend into the heating cavity, the second rotating shaft drives a second supporting rod to reciprocate above and below the horizontal plane where the first supporting rod is located in a rotating state, and the translation feeding mechanism comprises a second driving part and a shifting piece; and the shifting piece is driven to feed the product from one heating cavity to the other heating cavity. The multiple heating units are arranged in the bent shape, a multi-layer structure is formed in each heating unit, a product is heated in the vertical lifting process, the occupied space of the equipment is reduced, different temperatures can be set in the multiple heating units, the temperature is increased and then decreased in the arrangement sequence, and the heating process of increasing the temperature and then decreasing the temperature is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of baking devices, and in particular to a multi-layer continuous automatic temperature rising and falling baking oven. Background Art

[0002] The baking oven can achieve baking at a certain temperature for a period of time to achieve effects such as solvent volatilization, firm bonding, and firm packaging. For example, the processing and forming of glass substrates, fan-out panel-level packaging (FOPLP) substrates, etc. all need to be baked in a baking oven (including heating and cooling processes) to meet processing requirements.

[0003] However, in the prior art, the baking oven is generally arranged to extend horizontally, that is, the baking process generally involves the product entering from one side of the baking oven, being transported over a long distance to be heated and cooled, and then flowing out from the other side of the baking oven. The above-mentioned long-distance transportation will inevitably lead to a longer baking oven, thereby occupying a larger space. Summary of the invention

[0004] The object of the present invention is to provide a multi-layer continuous automatic temperature rising and falling baking oven, in which a plurality of heating units are arranged in a bent shape, and the product is heated during the vertical rising and falling process in the multi-layer structure formed in each heating unit, thereby shortening the extension space of the equipment in the horizontal direction and reducing the space occupied by the equipment. Different temperatures can be set in the plurality of heating units, and they are first raised and then lowered in the order of their arrangement, thereby realizing a complete heating process of heating up and then cooling down.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: a multi-layer continuous automatic temperature rise and fall oven, comprising a heating unit, a plurality of the heating units are arranged in series in a bent shape, and the heating unit comprises:

[0006] A heating furnace body is provided with a heating cavity therein, and feeding ports for product entry and exit are respectively provided at the upper and lower parts of both sides of the heating furnace body and are connected to the heating cavity, and a pair of the feeding ports on a pair of adjacent heating furnace bodies are connected.

[0007] A vertical feeding mechanism, comprising a first driving part, and a first bearing part and a second bearing part connected thereto, wherein the first bearing part comprises a plurality of first rotating shafts rotatably arranged on the heating furnace body, a plurality of first supporting rods are arranged on the side walls of the first rotating shafts from top to bottom, the second bearing part comprises a plurality of second rotating shafts rotatably and vertically movable on the heating furnace body, a plurality of second supporting rods are arranged on the side walls of the second rotating shafts from top to bottom, the second rotating shafts are adjacent to the first rotating shafts and extend into the heating cavity, and the second rotating shafts are driven to drive the second supporting rods to reciprocate above and below the horizontal plane where the first supporting rods are located in a rotating state,

[0008] The translation feeding mechanism is arranged on a pair of adjacent heating furnace bodies and adjacent to the feeding port. The translation feeding mechanism includes a second driving part and a paddle connected thereto. The paddle is driven to feed the product from one heating cavity to another heating cavity.

[0009] As a further optimization, the first driving part includes a driving unit, a first connecting rod assembly and a second connecting rod assembly, the first connecting rod assembly and the second connecting rod assembly are respectively connected to the first rotating shaft and the second rotating shaft, the driving unit includes a first motor, and a driving wheel arranged at the output end of the first motor, and the side walls of the driving wheel are provided with guide grooves that are connected end to end and have different heights, the first connecting rod assembly and the second connecting rod assembly are both connected to the upper end of the driving wheel and are driven to swing, and part of the second connecting rod assembly is embedded in the guide groove and is driven to rise and fall.

[0010] As a further optimization, the first connecting rod assembly includes a first frame, the pin shaft on the first frame is rotatably arranged in the annular guide groove at the upper end of the driving wheel, and the lower end is translationally arranged on the first guide rail located on the heating furnace body, and the first waist holes on multiple ends of the first frame are respectively matched and arranged on multiple first rotating axes.

[0011] As a further optimization, the second connecting rod assembly includes a top plate, a vertical plate and a second frame, the vertical plate is arranged at the lower end of the top plate, and a guide wheel is provided on one side of the vertical plate, the guide wheel is embedded in the guide groove, the upper end of the second rotating shaft is connected to the lower end of the top plate, the pin shaft on the second frame is rotatably arranged at a non-center position of the upper end of the driving wheel, and the lower end is translationally arranged on the second guide rail located on the heating furnace body, and the second waist holes on multiple ends of the second frame are respectively matched and arranged on multiple second rotating shafts.

[0012] As a further optimization, the second rotating axis includes a main shaft and a guide rod, the upper end of the guide rod is rotatably arranged on the lower end of the top plate, the second waist hole is sleeved on the guide rod, the main shaft is arranged at the lower end of the guide rod, and the second support rod is arranged on the main shaft.

[0013] As a further optimization, a vertical guide rail is provided at the upper end of the heating furnace body, and the top plate is slidably arranged on the vertical guide rail to ensure the accuracy of the vertical movement of the second rotating shaft driven by the top plate.

[0014] As a further optimization, the second driving unit includes a second motor, a driving shaft, a driven shaft and a rotating belt. The driving shaft and the driven shaft are arranged on the heating furnace body, and the driving shaft is connected to the second motor. The rotating belt is sleeved on the driving shaft and the driven shaft, and extends from one heating cavity to another heating cavity. A plurality of paddles are arranged on the rotating belt.

[0015] As a further optimization, a closing structure is provided on the heating furnace body beside the feeding port, and the closing structure includes a cylinder and a sealing plate arranged at the output end of the cylinder. The sealing plate is driven to close the feeding port, which can prevent the temperature in a pair of heating cavities in adjacent heating units from being transferred to each other, thereby ensuring the constant temperature in each heating cavity.

[0016] As a further optimization, the multiple heating units are arranged in an L-shape, a U-shape or an S-shape; the temperature in the same heating cavity is the same, and the temperature in the multiple heating cavities first increases and then decreases along their arrangement order, thereby completing the process of heating up and then cooling down.

[0017] As a further optimization, the number of the heating units is four, and the four heating units are preferably arranged in a U-shape.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The products are heated in each heating furnace body in turn, and the vertical feeding mechanism and the translation feeding mechanism are used to realize the connection between product lifting and translation. The products are heated in the process of vertical lifting in each heating furnace body, which improves the space utilization rate. In addition, multiple heating units are arranged in a bent shape, which shortens the extension space of the equipment in the horizontal direction and reduces the occupied space of the entire equipment;

[0020] 2. The vertical feeding mechanism transfers and lifts the product through the rotating first support rod and the rotating and lifting second support rod, which forms a unique liftable multi-layer structure, which can save the space occupied by each heating furnace body;

[0021] 3. The temperature in the same heating chamber is the same, and different temperatures can be set in multiple heating chambers, and they are first increased and then decreased along the arrangement order, realizing a complete heating process of heating up and then cooling down. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present invention.

[0023] Figure 2 It is a structural diagram of the heating unit of the present invention.

[0024] Figure 3It is a structural diagram of the vertical feeding mechanism of the present invention.

[0025] Figure 4 It is a structural diagram of the first connecting rod assembly and the first bearing portion of the present invention.

[0026] Figure 5 It is a structural diagram of the second connecting rod assembly and the second bearing part of the present invention.

[0027] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0028] Figure 7 It is a structural diagram of the second connecting rod assembly of the present invention.

[0029] Figure 8 It is a structural diagram of the translation feeding mechanism of the present invention. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] like Figures 1 to 3As shown, a multi-layer continuous automatic temperature rise and fall baking oven comprises a heating unit 100, wherein the plurality of heating units 100 are arranged in series in a bent shape, the heating unit 100 comprises a heating furnace body 10, a vertical feeding mechanism 20 and a translation feeding mechanism 30, a heating cavity is arranged in the heating furnace body 10, and the upper and lower parts of the two sides of the heating furnace body are respectively provided with feeding ports connected to the heating cavity and used for product entry and exit, the specific feeding ports comprise a feeding port 101 and a discharging port 102, a pair of feeding ports on an adjacent pair of heating furnace bodies 10 are connected, that is, the discharging port 102 of the heating furnace body 10 near the front side of the adjacent pair of heating furnace bodies 10 is connected to the feeding port 101 of the heating furnace body 10 near the rear side to realize the connection between the two heating cavities, the vertical feeding mechanism 20 comprises a first driving part 21, and a first bearing part 22 and a second bearing part connected to the first driving part 21 23, the first bearing part 22 includes a plurality of first rotating shafts 221 rotatably arranged on the heating furnace body 10, and a plurality of first supporting rods 222 are arranged on the side wall of the first rotating shaft 221 from top to bottom. The second bearing part 23 includes a plurality of second rotating shafts 231 rotatably and vertically movable on the heating furnace body 10, and a plurality of second supporting rods 232 are arranged on the side wall of the second rotating shaft 231 from top to bottom. The second rotating shaft 231 is adjacent to the first rotating shaft 221 and extends into the heating cavity, and the second rotating shaft 231 is driven to drive the second supporting rods 232 to reciprocate above and below the horizontal plane where the first supporting rods 222 are located in a rotating state. The translation feeding mechanism 30 is arranged on a pair of adjacent heating furnace bodies 10 and is located adjacent to the feeding port. It can extend from the side of the discharge feeding port 102 of one heating furnace body 10 to the side of the feed feeding port 101 of the adjacent heating furnace body 10, combined with Figure 8 As shown, the translation feeding mechanism 30 includes a second driving portion and a paddle 35 connected thereto, and the paddle 35 is driven to feed the product from one heating cavity to another heating cavity.

[0032] In the present invention, the product may be a fan-out panel-level packaging (FOPLP) substrate having a sheet-like structure. In a preferred embodiment, four heating units 100 are provided, namely, a first heating unit 100a, a second heating unit 100b, a third heating unit 100c and a fourth heating unit 100d connected in series. The four heating units 100 are arranged in an adjacent U-shape, wherein a feed port 101 on the heating furnace body 10 of the first heating unit 100a is provided at its lower portion, and a discharge port 102 is provided at its upper portion on the opposite side thereof, and a feed port 101 on the heating furnace body 10 of the second heating unit 100b is provided at its upper portion and communicated with the discharge port 102 in the first heating unit 100a. The discharge feeding port 102 is arranged at the lower part of the side thereof, the feed feeding port 101 on the heating furnace body 10 of the third heating unit 100c is arranged at the lower part thereof and communicated with the discharge feeding port 102 in the second heating unit 100b, and the discharge feeding port 102 is arranged at the upper part of the side thereof, the feed feeding port 101 on the heating furnace body 10 of the fourth heating unit 100d is arranged at the upper part thereof and communicated with the discharge feeding port 102 in the third heating unit 100c, and the discharge feeding port 102 is arranged at the lower part of the opposite side thereof, and the four heating cavities are connected by the cooperation of the feed feeding port 101 and the discharge feeding port 102, and the products are sequentially formed in the four heating cavities by the drive of the vertical feeding mechanism 20 and the translation feeding mechanism 30. The vertical feeding mechanism 20 is preferably provided with four first bearing parts 22 and four second bearing parts 23, each of which is adjacent to each of the second bearing parts 23, and the four groups of combinations are respectively located at the four corners of the heating chamber to achieve stable support for the product, wherein the first rotating shaft 221 only drives the first support rod 222 thereon to rotate in the horizontal plane, and the second rotating shaft 231 can drive the second support rod 232 thereon to rotate in the horizontal plane while also driving the second support rod 232 to move vertically, so the support of the product can be achieved through the movement form and movement trajectory of the first support rod 222 and the second support rod 232 The product is supported and moved in the vertical direction. For example, when the product is supported by the first bearing part 22, that is, the product is supported by the four first support rods 222, since the first support rod 222 has a tendency to rotate, its contact with the first support rod 222 will disappear at a certain position, so that the product is not supported by the first support rod 222, that is, the vertical projections of the product and the four first support rods 222 do not overlap, but since the second support rod 232 in the second supporting part 23 is also rotating, when the vertical projections of the product and the four second support rods 232 have an overlapping position, the product can be supported, that is, the product is supported by the first support rod 222 and the second support rod 232 in turn, and at the same time, since the second support rod 232 moves up or down driven by the second rotating shaft 231,Therefore, the product can be driven to rise or fall (after the first support rod 222 is rotated, it does not overlap with the product in the vertical projection, providing space for rising or falling). After rising or falling by a set distance, the contact between the product and the second support rod 232 will disappear at a certain position so that the product is not supported by the second support rod 232, but will be supported by the first support rod 222 of the upper or lower layer that has an overlapping position with the vertical projection of the product after rotation. Therefore, a multi-layer structure is formed in which multiple products can be placed. The product is supported by the above-mentioned first support rod 222 and the second support rod 232 and rises or falls to complete the up and down movement in the heating chamber. Combined with the arrangement of the four heating units 100 in this embodiment, the specific movement process of the product is as follows: the product enters from the feed port 101 (located at the bottom) of the first heating unit 100a via a feeding line or a manipulator, and is driven by the first vertical feeding mechanism 200a to rise in the heating cavity of the first heating unit 100a to the upper part of the heating cavity, and is pushed from the discharge feeding port 102 (located at the upper part) to the feed port 102 (located at the upper part) of the second heating unit 100b through the action of the paddle 35 in the translation feeding mechanism 30, and is driven by the second vertical feeding mechanism 200b to descend in the heating cavity of the second heating unit 100b to the lower part of the heating cavity, and is driven by the paddle 35 in the translation feeding mechanism 30 from the discharge feeding port 102 (located at the upper part) to the feed port 102 (located at the upper part) of the second heating unit 100b. The material is pushed from the feed port 102 (located at the bottom) to the feed port 102 (located at the bottom) of the third heating unit 100c, driven by the third vertical feeding mechanism 200c to rise to the upper part of the heating cavity in the heating cavity of the third heating unit 100c, and pushed from the discharge feeding port 102 (located at the top) to the feed port 102 (located at the top) of the fourth heating unit 100d through the action of the paddle 35 in the translation feeding mechanism 30, driven by the fourth vertical feeding mechanism 200d to descend to the lower part of the heating cavity in the heating cavity of the fourth heating unit 100d, and discharged from the discharge feeding port 102 (located at the bottom) through the action of the paddle 35 in the translation feeding mechanism 30. After the entire heating process is completed, the material can be unloaded by the feeding line or the robot.

[0033] In the present invention, although the product is heated by multiple heating furnace bodies 10 (heating cavities), the vertical feeding mechanism 20 and the translational feeding mechanism 30 can be used to achieve the connection between product lifting and translation. Compared with the conventional heating equipment that relies on horizontal feeding to heat, each heating furnace body in the oven can heat the product during the vertical lifting process, thereby improving space utilization. In addition, the multiple heating units 100 are arranged in a bent shape, which can shorten the extension space of the equipment in the horizontal direction, thereby reducing the occupied space of the entire equipment; moreover, the vertical feeding mechanism 20 is used to lift and lower the heating furnace body 10, so that more products can be placed in a flat form, thereby improving work efficiency; furthermore, the vertical feeding mechanism 20 realizes the transfer and lifting of the product through the rotating first support rod 222 and the rotating and lifting second support rod 232, without the need to adopt the circulating flow of multiple support platforms, which can also save the occupied space of each heating furnace body.

[0034] Preferably, the temperature in the same heating cavity is the same, and the temperature in the four heating cavities increases first and then decreases in the order in which they are arranged, so that a complete heating process of heating and cooling can be achieved. In order to ensure the constant temperature in each heating cavity and prevent heat from being transferred to adjacent heating cavities, a closed structure is provided on the side of the feeding port of the heating furnace body 10. Figure 2 As shown, the heating unit 100 should be the second heating unit 100b (based on the position of the heating unit 100 among the four heating units, and the setting positions of its feed port 101 and the discharge port 102), which is provided with a first closed structure 41 at the feed port 101, and a second closed structure 42 at the discharge port 102. The first cylinder 411 in the first closed structure 41 drives the first sealing plate 412 to close or open the feed port 101, and the second cylinder 421 in the second closed structure 42 drives the second sealing plate 422 to close or open the discharge port 102; when the feed port is closed, the temperatures in adjacent heating cavities cannot be transferred to each other, thereby ensuring the temperature stability in each heating cavity. When the feed port is opened, it is used to realize the transfer of products in adjacent heating cavities. After the product transfer is completed, it is closed again to close the feed port.

[0035] In the above-mentioned embodiment, four heating units 100 are arranged adjacent to each other in a U-shape. Different arrangements can also be set according to different numbers of heating units 100. For example, in another embodiment, three or four heating units are arranged in an L-shape, five heating units are arranged in an L-shape or a U-shape, six heating units are arranged in an S-shape, etc., all of which can reduce the space occupied by the equipment by heating the product in a lifting state in the heating furnace body and arranging the multiple heating units in a bent shape.

[0036] For the specific structure of the first driving part 21 in the vertical feeding mechanism 20, as shown in FIG. Figures 4 to 6 As shown, it includes a driving unit 211, a first connecting rod assembly 212 and a second connecting rod assembly 213, the first connecting rod assembly 212 and the second connecting rod assembly 213 are respectively connected to the first rotating shaft 221 and the second rotating shaft 231, the driving unit 211 includes a first motor 2111, and a driving wheel 2112 arranged at the output end of the first motor 2111, and the side walls of the driving wheel 2112 are provided with guide grooves 2112a that are connected end to end and have different heights, the first connecting rod assembly 212 and the second connecting rod assembly 213 are both connected to the upper end of the driving wheel 2112 and are driven to swing, and part of the second connecting rod assembly 213 is embedded in the guide groove 2112a and is driven to rise and fall. To realize the rotation of the first rotating shaft 221, when the driving wheel 2112 is driven to rotate by the first motor 2111, it drives the first connecting rod assembly 212 to swing, and the rotation of the first rotating shaft 221 is realized by the swing of the first connecting rod 212. Specifically, the first connecting rod assembly 212 includes a first frame 2121, a first pin shaft 2121a on the first frame 2121 is rotatably arranged in an annular guide groove 2112b at the upper end of the driving wheel 2112, and a lower end is translatably arranged on a first guide rail 2122 located on the heating furnace body 10, and multiple ends of the first frame 2121 The first waist holes 2121b on the first rotating shaft 221 are respectively matched and arranged on the plurality of first rotating shafts 221. Therefore, when the rotating wheel 2112 is driven to rotate, the annular guide groove 2112b thereof drives the top end (first pin 2121a) of the first frame 2121 to change its position. In combination with the lower end of the first frame 2121 being limited by the first guide rail 2122 and only being able to move in one horizontal direction, the first frame 2121 is swung, and the first rotating shaft 221 is driven by the four first waist holes 2121b respectively located at the four ends thereof to rotate the first rotating shaft 221. It should be noted that the upper end of the first rotating shaft 221 is an eccentric structure, based on which the relative movement of the eccentric structure in the first waist hole 2121b and the movement of the eccentric structure relative to the heating furnace body 10 can be realized, thereby realizing the rotation of the first rotating shaft 221 driven by the eccentric structure.

[0037] To realize the rotation of the second rotating shaft 231, when the driving wheel 2112 is driven to rotate by the first motor 2111, it drives the second connecting rod assembly 213 to swing, and drives at least a part of the second connecting rod assembly 213 to rise and fall through the guide groove 2112a, and the rotation and lifting of the second rotating shaft 231 are realized by the swinging of the second connecting rod 213 and the lifting and falling of at least a part of the second connecting rod 213. Specifically, the second connecting rod assembly 213 includes a top plate 2131, a vertical plate 2132 and a second frame 2133. The upper end of the heating furnace body 10 is provided with a vertical guide rail 2131. 35, the top plate 2131 is slidably arranged on the vertical guide rail 2135, the vertical plate 2132 is fixedly arranged at the lower end of the top plate 2131, and a guide wheel 2132a is provided on one side of the vertical plate 2132, and the guide wheel 2132a is embedded in the guide groove 2112a. When the driving wheel 2112 rotates, the guide wheel 2132a embedded in the guide groove 2112a will rise and fall with the change of the height of the guide groove 2112a, so that the vertical plate 2132 drives the top plate 2131 to rise and fall (the upper end of the top plate 2131 is provided with a clearance hole 213 0 to achieve mutual giving way between the top plate 2131 and the first motor 2111 during the descending process), since the upper end of the second rotating shaft 231 is connected to the lower end of the top plate 2131, the lifting action of the second rotating shaft 231 can be achieved, and the second pin 2133a on the second frame 2133 can be rotatably arranged at a non-central position of the upper end of the driving wheel 2112, and the lower end can be translated and arranged on the second guide rail 2134 located on the heating furnace body 10, and the second waist holes 2133b on the four ends of the second frame 2133 The second rotating shafts 231 are matched and arranged respectively. Therefore, when the driving wheel 2112 rotates, the non-center position of the driving wheel 2112 drives the top end (second pin 2133a) of the second frame 2133 to change its position. The lower end of the second frame 2133 is limited by the second guide rail 2134 and can only move in one horizontal direction. Therefore, the swing of the second frame 2133 is realized, and the second rotating shaft 231 is driven by the four second waist holes 2133b located at the four ends to realize the rotation of the second rotating shaft 231. It should be noted that the upper end of the second rotating shaft 231 is also set as an eccentric structure, based on which the relative movement of the eccentric structure in the second waist hole 2133b and the movement relative to the heating furnace body 10 can be realized. In summary, the eccentric structure drives the entire second rotating shaft 231 to rotate. Furthermore, the specific structure of the second rotating shaft 231 includes a main shaft 2311 and a guide rod 2312. The guide rod 2312 is the eccentric structure mentioned above, and its upper end is rotatably arranged on the lower end of the top plate 2131. The second waist hole 2133b is sleeved on the guide rod 2312. The main shaft 2311 is fixedly arranged on the lower end of the guide rod 2312, and the second support rod 232 is arranged on the main shaft 2311.

[0038] For the specific structure of the second driving part in the translation feeding mechanism 30, as shown in FIG. Figure 7As shown, the second driving unit includes a second motor 31, a driving shaft 32, a driven shaft 33 and a rotating belt 34. The driving shaft 32 and the driven shaft 33 are arranged on the heating furnace body 10, and the driving shaft 32 is connected to the second motor 31. The rotating belt 34 is sleeved on the driving shaft 32 and the driven shaft 33, and extends from one heating cavity to another heating cavity. A plurality of paddles 35 are arranged on the rotating belt 34. Based on the above arrangement, the second motor 31 drives the driving shaft 32 to rotate, thereby driving the rotating belt 34 and the driven shaft 33 to rotate synchronously, and then the rotating belt 34 drives the paddles 35 to push the product to translate from the combination of the first support rod 222 and the second support rod 232 in one heating cavity to the combination of the first support rod 222 and the second support rod 232 in another heating cavity. When the feeding ports of a pair of adjacent heating units 100 are located at the upper part of the heating furnace body 10 and are connected, the translation feeding mechanism 30 is arranged at the upper part of the heating furnace body 10; when the feeding ports of a pair of adjacent heating units 100 are located at the lower part of the heating furnace body 10 and are connected, the translation feeding mechanism 30 is arranged at the lower part of the heating furnace body 10.

[0039] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A multi-layer continuous automatic temperature rise and fall baking oven, characterized in that: It comprises a heating unit, a plurality of the heating units are arranged in series in a bent shape, and the heating unit comprises: A heating furnace body is provided with a heating cavity therein, and feeding ports for product entry and exit are respectively provided at the upper and lower parts of both sides of the heating furnace body and are connected to the heating cavity, and a pair of the feeding ports on a pair of adjacent heating furnace bodies are connected. A vertical feeding mechanism, comprising a first driving part, and a first bearing part and a second bearing part connected thereto, wherein the first bearing part comprises a plurality of first rotating shafts rotatably arranged on the heating furnace body, a plurality of first supporting rods are arranged on the side walls of the first rotating shafts from top to bottom, the second bearing part comprises a plurality of second rotating shafts rotatably and vertically movable on the heating furnace body, a plurality of second supporting rods are arranged on the side walls of the second rotating shafts from top to bottom, the second rotating shafts are adjacent to the first rotating shafts and extend into the heating cavity, and the second rotating shafts are driven to drive the second supporting rods to reciprocate above and below the horizontal plane where the first supporting rods are located in a rotating state, The translation feeding mechanism is arranged on a pair of adjacent heating furnace bodies and adjacent to the feeding port. The translation feeding mechanism includes a second driving part and a paddle connected thereto. The paddle is driven to feed the product from one heating cavity to another heating cavity.

2. The multi-layer continuous automatic temperature rise and fall oven according to claim 1, characterized in that: The first driving part includes a driving unit, a first connecting rod assembly and a second connecting rod assembly, the first connecting rod assembly and the second connecting rod assembly are respectively connected to the first rotating shaft and the second rotating shaft, the driving unit includes a first motor and a driving wheel arranged at the output end of the first motor, and the side walls of the driving wheel are provided with guide grooves that are connected end to end and have different heights, the first connecting rod assembly and the second connecting rod assembly are both connected to the upper end of the driving wheel and are driven to swing, and part of the second connecting rod assembly is embedded in the guide groove and is driven to rise and fall.

3. The multi-layer continuous automatic temperature rise and fall oven according to claim 2, characterized in that: The first connecting rod assembly includes a first frame, the pin shaft on the first frame is rotatably arranged in the annular guide groove at the upper end of the driving wheel, and the lower end is translationally arranged on the first guide rail located on the heating furnace body, and the first waist holes on multiple ends of the first frame are respectively matched and arranged on multiple first rotating shafts.

4. The multi-layer continuous automatic temperature rise and fall oven according to claim 3, characterized in that: The second connecting rod assembly includes a top plate, a vertical plate and a second frame. The vertical plate is arranged at the lower end of the top plate and has a guide wheel on one side. The guide wheel is embedded in the guide groove. The upper end of the second rotating shaft is connected to the lower end of the top plate. The pin shaft on the second frame is rotatably arranged at a non-center position of the upper end of the driving wheel, and the lower end is translationally arranged on the second guide rail located on the heating furnace body. The second waist holes on multiple ends of the second frame are respectively matched and arranged on multiple second rotating shafts.

5. The multi-layer continuous automatic temperature rise and fall oven according to claim 4, characterized in that: The second rotating shaft includes a main shaft and a guide rod, the upper end of the guide rod is rotatably arranged on the lower end of the top plate, the second waist hole is sleeved on the guide rod, the main shaft is arranged on the lower end of the guide rod, and the second support rod is arranged on the main shaft.

6. The multi-layer continuous automatic temperature rise and fall oven according to claim 4, characterized in that: A vertical guide rail is provided at the upper end of the heating furnace body, and the top plate is slidably arranged on the vertical guide rail.

7. The multi-layer continuous automatic temperature rise and fall baking oven according to any one of claims 1 to 6, characterized in that: The second driving part includes a second motor, a driving shaft, a driven shaft and a rotating belt. The driving shaft and the driven shaft are arranged on the heating furnace body, and the driving shaft is connected to the second motor. The rotating belt is sleeved on the driving shaft and the driven shaft and extends from one heating cavity to another heating cavity. A plurality of paddles are arranged on the rotating belt.

8. The multi-layer continuous automatic temperature rise and fall oven according to claim 1, characterized in that: A closing structure is also provided on the heating furnace body beside the feeding port. The closing structure includes a cylinder and a closing plate arranged at the output end of the cylinder. The closing plate is driven to close the feeding port.

9. The multi-layer continuous automatic temperature rise and fall oven according to claim 1, characterized in that: The plurality of heating units are arranged in an L-shape, a U-shape or an S-shape; the temperature in the same heating cavity is the same, and the temperature in the plurality of heating cavities first increases and then decreases along the arrangement sequence.

10. The multi-layer continuous automatic temperature rise and fall baking oven according to claim 1 or 9, characterized in that: The number of the heating units is four, and the four heating units are arranged in a U shape.

Images