Convection oven

Abstract

The present invention discloses a three-dimensional oven, which includes a frame, a box body, a feeding mechanism, a discharging mechanism, a material transferring mechanism, a heating device and a cooling device. The box body is arranged on the frame. The box body includes a drying box and a cooling box. The heating device is arranged on the drying box, and the cooling device is arranged on the cooling box. An inlet is arranged on one side of the drying box, the cooling box is located on the other side of the drying box, and an outlet is arranged on one side of the cooling box. The feeding mechanism is correspondingly arranged with the drying box, the discharging mechanism is correspondingly arranged with the cooling box, and the material transferring mechanism is arranged on the top of the box body and corresponds to the top of the drying box and the top of the cooling box. Under the action of the feeding mechanism, the gradual upward stacking of the trays can be realized, so that the products in multiple trays can be baked simultaneously in the drying box, enabling the products to have sufficient heating and baking time without extending the length of the heating channel, thus greatly reducing the space occupied by the entire box body. At the same time, multiple products are continuously baked, and the energy consumption is greatly reduced.

Description

Technical Field

[0001] The present invention belongs to a drying device, and particularly relates to a three-dimensional oven. Background Art

[0002] After existing components such as liquid crystal displays, glass components or membrane switches are coated with glue or ink, it is necessary to dry the glue or ink. Since the precision requirements for such components are high, when drying, the products need to be placed on a tray and then the tray is placed in an oven for drying. There are mainly two existing drying methods. One is a tunnel dryer, such as a glue drying device disclosed in the patent application No. 202222690874.7, which conveys the products into a heating box through a conveyor belt and then outputs them after staying in the heating box for a sufficient time. This type of drying device occupies a very large area and has low drying efficiency and low heat energy utilization rate. The other is a box type, such as a liquid crystal display baking and curing device disclosed in the patent application No. 202410885430.X. The products are placed in a drying box for a certain time and then cooled. Each time, a single product is dried, and the drying efficiency is low. Summary of the Invention

[0003] The purpose of the present invention is to provide a three-dimensional oven that can solve at least one of the above problems.

[0004] According to one aspect of the present invention, a three-dimensional oven is provided, which includes a frame, a box body, a loading mechanism, an unloading mechanism, a material transfer mechanism, a heating device and a cooling device. The box body is arranged on the frame. The box body includes a drying box and a cooling box. The heating device is arranged on the drying box, and the cooling device is arranged on the cooling box. An inlet is arranged on one side of the drying box, the cooling box is located on the other side of the drying box, and an outlet is arranged on one side of the cooling box. The loading mechanism is correspondingly arranged with the drying box, the unloading mechanism is correspondingly arranged with the cooling box, the material transfer mechanism is arranged on the top of the box body and is correspondingly arranged with the top of the drying box and the top of the cooling box. A communication hole is opened at the top of the drying box close to the cooling box side, a chute is arranged on the top of the drying box, the chute is communicated with the communication hole, and the bottom end of the material transfer mechanism penetrates through the chute and extends into the drying box.

[0005] The beneficial effects of the present invention are as follows: By arranging the feed inlet at the drying box and the discharge outlet at the cooling box, and setting the material transfer mechanism at the top of the box body. Therefore, after the feeding mechanism puts the products to be baked in the tray into the drying box, the products are dried in the drying box. And under the action of the feeding mechanism, the trays can be gradually stacked upwards, so that the products in multiple trays can be baked simultaneously in the drying box. After baking, the trays are moved from the top to the cooling box by the material transfer mechanism; through the discharging mechanism, it is convenient to take out one by one the cooled products stacked below in the cooling box. Thus, through the gradual upward stacking of the trays in the drying box, the products have sufficient drying time; through the gradual downward fall of the trays in the cooling box, the products have sufficient cooling time, thereby greatly reducing the space occupied by the entire box body. At the same time, multiple products can be baked continuously, the heat energy can be fully utilized, and the energy consumption is greatly reduced.

[0006] In some embodiments, the heating device includes a blower, a heating box, and heating tubes. The blower is fixed on the outer side of the drying box and is located above the heating box. The heating box is fixed on the outer side of the drying box. The air outlet of the blower is communicated with the heating box. The heating tubes are arranged in the heating box. A plurality of ventilation holes are provided on the side wall of the drying box. The heating box is communicated with the drying box through the ventilation holes. The heating device is located on opposite sides of the drying box. Thus, the blower can blow the heat flowing upwards in the heating box downwards and enter the drying box through the ventilation holes, making the heat in the drying box uniform and facilitating the uniform drying of the products.

[0007] In some embodiments, the three-dimensional oven further includes a support frame and a limiting rod. The support frame is located at the bottom of the drying box. Limiting rods are provided in both the drying box and the cooling box. The limiting rods are arranged along the height direction of the drying box and the cooling box. There are multiple limiting rods, and a sliding strip is provided on the inner side of each limiting rod. A backstop assembly is provided on the support frame. Thus, through the limiting rods, the outer periphery of the tray can be limited, facilitating the stacking of the trays; by providing the backstop assembly, it is convenient to support the trays in the drying box and ensure that the trays can enter normally from the feed inlet.

[0008] In some embodiments, the loading mechanism includes a loading rack, a first lifting device, a front-back moving device, and a first jacking device. The loading rack is located on one side of the machine frame. Both the first lifting device and the front-back moving device are arranged on the loading rack. The first jacking device is arranged on the machine frame and is located below the drying oven. The front-back moving device is connected to the first lifting device. One end of the front-back moving device corresponds to the feeding port of the drying oven. The top end of the first jacking device can penetrate the bottom of the drying oven and extend into the drying oven. The top end of the first jacking device corresponds to the anti-retreat assembly. Thus, by providing the first lifting device, the tray can be conveyed from below to above, facilitating the placement of products on the tray. Then, through the front-back moving device, the tray with products placed on it is conveyed into the oven. Then, through the first jacking device, the tray can be jacked upward, facilitating the placement of the tray on the anti-retreat assembly inside the drying oven, thereby realizing the automatic loading of the tray, eliminating the need for manual placement of the tray into the drying oven, saving labor, and saving the loading time of the tray, which is beneficial to improving production efficiency.

[0009] In some embodiments, the first jacking device includes a driving motor, a jacking plate, a jacking rod, and a support rod. The driving motor is arranged on the machine frame. The jacking plate is connected to the output shaft of the driving motor. The jacking rod is arranged on the jacking plate. There are multiple jacking rods. The jacking rods penetrate the bottom end of the drying oven and extend into the drying oven. Both ends of the support rod are fixed to the top ends of the jacking rods. Thus, the tray input from the feeding port can be supported by the jacking rods and the support rod, and then jacked upward under the action of the driving motor, stacked below the raw material tray inside the drying oven, and supported by the anti-retreat assembly, facilitating the input of the next tray.

[0010] In some embodiments, the first lifting device includes a lifting frame. The front-back moving device includes a front-back moving motor, a front-back moving synchronous belt, and a front-back moving synchronous pulley. The front-back moving motor is arranged on the lifting frame. There are two front-back moving synchronous pulleys. One of the front-back moving synchronous pulleys is sleeved on the output shaft of the front-back moving motor, and the other front-back moving synchronous pulley is arranged on the lifting frame. The front-back moving synchronous belt is sleeved on the two front-back moving synchronous pulleys. The front-back moving synchronous belt corresponds to the feeding port. Thus, through the front-back moving device and the front-back moving motor, the front-back moving synchronous belt can be driven to convey, so that the tray on the front-back moving synchronous belt is conveyed forward and moved into the drying oven.

[0011] In some embodiments, the blanking mechanism includes a blanking rack, a blocking device, a second lifting device, a second lifting and lowering device, a first front-back conveying device, and a second front-back conveying device. The blanking rack is located on the other side of the machine frame. The second lifting and lowering device and the first front-back conveying device are arranged on the blanking rack. The second front-back conveying device is located on one side of the first front-back conveying device. The second front-back conveying device is located inside the cooling box. The second lifting device is located below the cooling box. The top end of the second lifting device penetrates the bottom of the cooling box and extends in. The blocking device is located on both sides of the second front-back conveying device. Both the blocking device and the second front-back conveying device are located inside the cooling box. The first front-back conveying device corresponds to the discharge port of the cooling box. Thus, when the lifting device jacks up the tray and moves downward to a certain position, the blocking device blocks the remaining trays, so that the lifting device can only drive one of the trays to descend onto the second front-back conveying device. This facilitates the product in the cooled tray to move onto the first front-back conveying device under the drive of the second front-back conveying device, realizing the automatic output of the trays in the cooling box from below without manual operation, greatly saving manpower and avoiding the frequent opening of the oven door panel, thereby improving efficiency.

[0012] In some embodiments, the structure of the second lifting device is the same as that of the first lifting device. The blocking device includes a cylinder and a baffle. The cylinder is arranged inside the cooling box. The baffle is connected to the cylinder and is located above the second front-back conveying device. The support rod of the second lifting device is located between the baffles on both sides. Thus, the cylinder can push the baffle to move towards the second front-back conveying device side, thereby separating the trays above and below the baffle, facilitating the trays to fall one by one onto the second front-back conveying device.

[0013] In some embodiments, the three-dimensional oven further includes a tray circulation mechanism. The tray circulation mechanism includes a circulation rack, a first motor, and a tray conveying belt. The circulation rack is fixed on the machine frame and is located below the box body. The first motor is fixed on the machine frame. The tray conveying belt is arranged on the circulation rack and is connected to the output shaft of the first motor. One end of the tray conveying belt corresponds to the first front-back conveying device, and the other end corresponds to the front-back moving device. The circulation rack is located below the first lifting device and the second lifting device. Thus, through the tray circulation mechanism, it is convenient for the trays output from the cooling box. After the products are taken out, they are conveyed to the tray circulation mechanism through the first front-back conveying device and then conveyed to the front-back moving device through the tray circulation mechanism, facilitating the placement of the products, thereby realizing the automatic conveying of the trays.

[0014] In some embodiments, the cooling device includes axial fans. The axial fans are located on opposite sides of the cooling box. The drying box and the cooling box are separated by a partition. Thus, through the convection of the axial fans, the air flow rate is increased, and the products in the trays in the cooling box can be quickly cooled. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the three-dimensional oven of the present invention.

[0016] Figure 2 It is a schematic structural diagram of the box body in the three-dimensional oven of the present invention.

[0017] Figure 3 It is a schematic structural diagram of the upper part structure of the box body in the three-dimensional oven of the present invention.

[0018] Figure 4 It is a schematic structural diagram of a part of the structure in the three-dimensional oven of the present invention after the outer shell is opened.

[0019] Figure 5 It is a schematic structural diagram of the internal part structure of the box body in the three-dimensional oven of the present invention.

[0020] Figure 6 It is a schematic structural diagram of the feeding mechanism in the three-dimensional oven of the present invention.

[0021] Figure 7 It is a schematic structural diagram of the first lifting device and the front-back moving device in the three-dimensional oven of the present invention.

[0022] Figure 8 It is a schematic structural diagram of the front-back moving device and the pushing device in the three-dimensional oven of the present invention.

[0023] Figure 9 It is a schematic structural diagram of the cooperation between the first jacking device and the bottom of the drying box in the three-dimensional oven of the present invention.

[0024] Figure 10 It is a schematic structural diagram of the discharging mechanism in the three-dimensional oven of the present invention.

[0025] Figure 11 It is a schematic structural diagram of the cooperation between the second lifting device and the first front-back conveying device in the three-dimensional oven of the present invention.

[0026] Figure 12 It is a schematic structural diagram of the first front-back conveying device in the three-dimensional oven of the present invention.

[0027] Figure 13 It is a schematic structural diagram of the second jacking device, the blocking device and the second front-back conveying device in the three-dimensional oven of the present invention.

[0028] Figure 14 It is a schematic structural diagram of the material transfer mechanism in the three-dimensional oven of the present invention.

[0029] Figure 15 It is a schematic structural diagram of the material tray circulation mechanism in the three-dimensional oven of the present invention. Detailed implementation manners

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Refer to Figures 1 to 4 A three-dimensional oven, comprising a frame 1, a box body 2, a feeding mechanism 3, a discharging mechanism 4, a material transferring mechanism 5, a heating device 6 and a cooling device 7. The box body 2 is arranged on the frame 1. The box body 2 includes a drying box 21 and a cooling box 22. The heating device 6 is arranged on the drying box 21, and the cooling device 7 is arranged on the cooling box 22. One side of the drying box 21 is provided with a feeding port 211. The cooling box 22 is located on the other side of the drying box 21. One side of the cooling box 22 is provided with a discharging port 221. The feeding mechanism 3 is correspondingly arranged with the drying box 21, the discharging mechanism 4 is correspondingly arranged with the cooling box 22, and the material transferring mechanism 5 is arranged on the top of the box body 2 and corresponds to the top of the drying box 21 and the top of the cooling box 22.

[0032] When the three-dimensional oven of the present invention is in use, in order to facilitate the drying of products in the drying box 21 and prevent the products from being scratched, therefore, the products are placed in a tray and then the tray is put into the drying box 21 together. Products such as glass parts, membrane switches, and liquid crystal display screens are placed in the tray at the feeding mechanism 3. The tray is conveyed into the drying box 21 through the feeding port 211 by the feeding mechanism 3 and gradually stacked upward from bottom to top, so that the feeding port 211 can continuously input trays, and at the same time, the products in the whole stack of trays can be heated and dried without extending the entire heating channel, greatly reducing the volume of the drying box and improving the drying efficiency. When the tray gradually rises to the top of the drying box 21, the products are dried. At this time, the top tray is clamped and moved into the cooling box 22 by the material transferring mechanism 5. In order to facilitate the movement of the tray from the drying box 21 to the cooling box 22, a communication hole 213 is opened at the top of the drying box 21 close to the cooling box 22, so that the tray can be moved into the cooling box 22 through the communication hole 213 under the clamping of the material transferring mechanism 5. The tray moves from top to bottom in the cooling box 22. When it moves down to the discharging port 221, the products in the tray are cooled to room temperature. When the tray moves down to the discharging port 221, the tray is removed from the cooling box 22 by the discharging mechanism 4, which is convenient for taking out the baked products on the tray and completing the baking of the products.

[0033] The heating device 6 includes a fan 61, a heating box 62 and heating tubes 63. The fan 61 is fixed on the outside of the drying box 21 and is located above the heating box 62. The heating box 62 is fixed on the outside of the drying box 21. The air outlet of the fan 61 is communicated with the heating box 62. The heating tubes 63 are arranged in the heating box 62. A plurality of ventilation holes 212 are provided on the side wall of the drying box 21. The heating box 62 is communicated with the drying box 21 through the ventilation holes 212. The heating device 6 is located on the opposite sides of the drying box 21. Among them, the heating device 6 is located on both sides of the feeding port 211, and the heating tubes 63 on each side wall can be multiple groups to improve the uniformity of heat reception of the products in the drying box 21.

[0034] When the heating device 6 is in operation, the heating tube 63 heats up, and the hot air is blown downward from the top of the heating box 62 by the blower 61, so that the hot air can be evenly distributed throughout the heating box 62 and uniformly flow into the entire drying box 21; through the convection of the hot air on both sides, the heat in the drying box 21 is evenly distributed, enabling the hot air to evenly dry the product. At the same time, by blowing downward with the blower 61, the upward loss of heat can be reduced, which is beneficial to improving the heat utilization rate.

[0035] The cooling device 7 includes axial fans 71, which are located on opposite sides of the cooling box 22. The drying box 21 and the cooling box 22 are separated by a partition 40. There are multiple axial fans 71 on each side. During cooling, the axial fans 71 on both sides are turned on, which can accelerate the convection between the cooling box 22 and the outside air, enabling the products in the cooling box 22 to be quickly cooled to room temperature.

[0036] As Figure 1 、 Figure 5 and Figure 9 shown, the three-dimensional oven further includes a support frame 8 and a limiting rod 9. The support frame 8 is located at the bottom of the drying box 21, and limiting rods 9 are provided in both the drying box 21 and the cooling box 22. The limiting rods 9 are arranged along the height direction of the drying box 21 and the cooling box 22. There are multiple limiting rods 9, and a smooth strip 10 is provided on the inner side (i.e., the side close to the tray) of each limiting rod 9. A retaining component 20 is provided on the support frame 8. The limiting rods 9 are located around the tray in the drying box 21, which can limit the four sides of the tray and ensure the stability of the tray during stacking. By providing the smooth strip 10, the tray is in contact with the rollers on the smooth strip 10, thereby reducing the friction force when the tray moves upward, which is beneficial to the stable upward stacking of the tray.

[0037] The support frame 8 is fixed on both sides of the feeding port 211. Rollers 81 are installed on the support frame 8, and the trays input from the feeding port 211 are placed on the rollers 81, which facilitates the feeding mechanism 3 to push the trays into the drying box 21.

[0038] Among them, the anti-reverse component 20 includes a fixing member 201, a swinging member 202, a spring 203 (blocked by the swinging member 202 in the figure and not shown), and a rotating shaft 204. The fixing member 201 is fixed to the support frame 8 by screws. An opening groove is formed on the front side of the fixing member 201. The swinging member 202 is located in the opening groove. The rotating shaft 204 is sleeved at the bottom of the swinging member 202. Both ends of the rotating shaft 204 penetrate through the swinging member 202 and are sleeved on the side walls on both sides of the opening groove. The spring 203 is located above the rotating shaft 204. One end of the spring 203 is connected to and abuts against the swinging member 202, and the other end abuts against the bottom of the opening groove. The length of the top of the swinging member 202 is greater than the length of its bottom. When the spring 203 is in a natural state, the inner side of the bottom of the swinging member 202 abuts against the bottom of the opening groove to limit the swinging member 202. At this time, when the top surface of the swinging member 202 is in a horizontal state, the top of the swinging member 202 extends beyond the fixing member 201, and the swinging member 202 is located above the roller 81.

[0039] Specifically, when the tray is pushed onto the roller 81 on the support frame 8 in the drying box 21, under the action of the loading mechanism 3, the tray can be pushed upward. At this time, the frame of the tray acts on the swinging member 202, causing the swinging member 202 to rotate and compress the spring 203 inward, so that the tray can move upward normally. When the tray moves above the swinging member 202, the spring 203 pushes the top of the swinging member 202 outward. At this time, the loading mechanism 3 places the tray above the swinging member 202, and the swinging member 202 supports the entire stack of trays, so as to facilitate the continuous pushing of the tray at the feed inlet 211 and placing it on the lower roller 81.

[0040] As Figure 4 、 Figures 6 to 9 shown, the loading mechanism 3 includes a loading frame 31, a first lifting device 32, a front-back moving device 33, and a first jacking device 34. The loading frame 31 is located on one side of the machine frame 1. The first lifting device 32 and the front-back moving device 33 are both arranged on the loading frame 31. The first jacking device 34 is arranged on the machine frame 1 and is located below the drying box 21. The front-back moving device 33 is connected to the first lifting device 32. One end of the front-back moving device 33 corresponds to the feed inlet 211 of the drying box 21. The top end of the first jacking device 34 can penetrate through the bottom of the drying box 21 and extend into the drying box 21. The top end of the first jacking device 34 corresponds to the anti-reverse component 20, that is, through the first jacking device 34, the tray can be jacked upward to above the swinging member 202, so that the entire stack of trays is placed on the swinging member 202 for support.

[0041] Among them, the first lifting device 32 includes a lifting motor 321, a lifting synchronous belt 322 and a lifting frame 323. The lifting motor 321 is fixed on the loading rack 31. The lifting synchronous belt 322 is connected to the output shaft of the lifting motor 321. One end of the lifting frame 323 is clamped and fixed on the lifting synchronous belt 322 by screws. The front and rear moving device 33 is arranged on the lifting frame 323.

[0042] The first lifting device 32 further includes two lifting synchronous pulleys 324 which are distributed vertically. One of the lifting synchronous pulleys 324 is sleeved on the output shaft of the lifting motor 321, and the other lifting synchronous pulley 324 is arranged on the loading rack 31. The lifting synchronous belt 322 is sleeved on the two lifting synchronous pulleys 324. When the lifting motor 321 works, it drives one of the lifting synchronous pulleys 324 to rotate, thereby driving the lifting synchronous belt 322 to convey, and then driving the lifting frame 323 to lift under the drive of the lifting synchronous belt 322. By controlling the rotation direction of the lifting motor 321, the lifting of the lifting frame 323 can be controlled.

[0043] In the actual use process, in order to facilitate the stable lifting of the lifting frame 323, two guide rails 325 are fixed on the loading rack 31 by screws. The two guide rails 325 are respectively located on both sides of the lifting synchronous belt 322. The guide rails 325 are vertically arranged. A slider is fixed on the lifting frame 323, and the slider is matched with the guide rail 325. Thus, through the cooperation of the slider and the guide rail 325, it is convenient for the lifting frame 323 to lift stably along with the corresponding side of the lifting synchronous belt 322.

[0044] The first jacking device 34 includes a driving motor 341, a jacking plate 342, a jacking rod 343 and a support rod 344. The driving motor 341 is arranged on the machine frame 1. The jacking plate 342 is connected to the output shaft of the driving motor 341. The jacking rod 343 is arranged on the jacking plate 342. There are multiple jacking rods 343. The jacking rods 343 penetrate through the bottom end of the drying oven 21 and extend into the drying oven 21. Both ends of the support rod 344 are fixed to the top ends of the jacking rods 343. Among them, the driving motor 341 is a linear motor, its output shaft is a screw rod, and the jacking plate 342 is in threaded cooperation with the output shaft of the linear motor. The jacking rod 343 can penetrate through the bottom of the oven and extend upward. Through the cooperation of the jacking rod 343 and the oven, the jacking rod can be limited, and the jacking rod 343 and the jacking plate 342 can be prevented from rotating. Thus, when the driving motor 341 is working, the jacking plate 342 can lift relative to the output shaft of the driving motor 341.

[0045] The forward and backward moving device 33 includes a forward and backward moving motor 331, a forward and backward moving synchronous belt 332, and forward and backward moving synchronous pulleys 333. The forward and backward moving motor 331 is arranged on the lifting frame 323. There are two forward and backward moving synchronous pulleys 333. One of the forward and backward moving synchronous pulleys 333 is sleeved on the output shaft of the forward and backward moving motor 331, and the other forward and backward moving synchronous pulley 333 is arranged on the lifting frame 323. The forward and backward moving synchronous belt 332 is sleeved on the two forward and backward moving synchronous pulleys 333. The forward and backward moving synchronous belt 332 corresponds to the feeding port 211, that is, the tray is conveyed forward to the upper part of the first lifting device 34 through the forward and backward moving synchronous belt 332.

[0046] Among them, there are two groups of forward and backward moving synchronous belts 332, which are arranged in parallel. Two corresponding forward and backward moving synchronous pulleys 333 are added. The forward and backward moving synchronous pulleys corresponding to the two groups of forward and backward moving synchronous belts 332 are connected by a rotating shaft, which is convenient for the two groups of forward and backward moving synchronous belts 332 to be conveyed synchronously.

[0047] During use, the tray is placed on the forward and backward moving synchronous belt 332. When the forward and backward moving device 33 moves upward driven by the first lifting device 32, the tray moves upward accordingly. When the tray rises to the position, the product is placed on the tray. The forward and backward moving motor 331 drives the forward and backward moving synchronous belt 332 to convey forward, thereby driving the tray to convey forward and conveying it into the drying box 21.

[0048] The feeding mechanism 3 further includes a mounting frame 35. The mounting frame 35 is fixed on the lifting frame 323. The forward and backward moving device 33 is arranged on the lifting frame 323 through the mounting frame 35. Among them, the mounting frame 35 is fixed on the lifting frame 323 by screws. Through the mounting frame 35, it is convenient to install each structure of the forward and backward moving device 33.

[0049] The feeding mechanism 3 further includes a pushing device 36. The pushing device 36 includes a push rod 361 and a push rod cylinder 362. The push rod cylinder 362 is arranged on the lifting frame 323. The push rod 361 is connected to the push rod cylinder 362. The push rod 361 corresponds to the first lifting device 34. Specifically, the piston rod of the push rod cylinder 362 is fixed on the mounting frame 35, and the push rod 361 is fixed to the cylinder block of the push rod cylinder 362. Therefore, by the movement of the cylinder block relative to the piston rod in the push rod cylinder 362, the push rod 361 can be driven to move.

[0050] When the tray is driven by the front and rear moving synchronous belt 332 and conveyed forward into the drying box 21, at this time, the push rod cylinder 362 pushes the push rod 361 forward. The push rod 361 acts forward on the tray, causing the tray to continue to be pushed forward on the rollers 81 until in place, thus ensuring that each tray can be pushed to the same position, facilitating the stacking of trays. When the tray is conveyed forward and in place in the drying box 21, the push rod cylinder 362 pulls back, causing the push rod 361 to pull back, and the lifting motor 321 rotates in the reverse direction, driving the lifting frame 323 to move downward, facilitating the conveyance of the next tray.

[0051] After the tray is located above the rollers 81, the driving motor 341 drives the jacking plate 342 to move upward, pushing the ejector rod 343 and the support rod 344 upward, so that the support rod 344 acts on the bottom of the tray. As the support rod 344 continues to rise, the support rod 344 pushes the tray on the rollers 81 upward. The tray acts on the swing member 202, enabling the tray to move upward and stack with the upper tray; when the lowermost tray moves above the swing member 202, the spring 203 ejects the top of the swing member 202; subsequently, the driving motor 341 rotates in the reverse direction, driving the support rod 344 to move downward, causing the stack of trays to move downward and finally supported above the swing member 202; the driving motor 341 drives the support rod 344 to move downward and reset. At this time, the front and rear moving device 33 can continue to drive the next tray into the drying box 21, repeating the operation to achieve the stacking of trays one by one from bottom to top. When the trays are stacked upward, the heating device 6 continuously dries the products on the trays.

[0052] When an additional tray is added below the stack of trays, the stack of trays will move upward a certain distance. When the tray moves to the uppermost position, the products in the tray are dried, and then are moved to the cooling box 22 via the material transfer mechanism 5.

[0053] As Figure 1 and Figure 14 shown, the material transfer mechanism 5 includes a material transfer frame 51, a moving device 52, a third lifting device 53, and a clamping device 54. The moving device 52 is provided on the material transfer frame 51, the third lifting device 53 is provided on the moving device 52, the clamping device 54 is connected to the third lifting device 53, the clamping device 54 is located on both sides of the moving device 52, and the material transfer frame 51 is fixed to the top of the box body 2 and extends from the top of the drying box 21 to the top of the cooling box 22.

[0054] When the material transfer mechanism 5 is in use, the moving device 52 can drive the third lifting device 53 and the clamping device 54 to move; the third lifting device 53 drives the clamping device 54 to lift and lower. The clamping device 54 can clamp the tray, and then under the movement of the moving device 52, move the tray from the drying box 21 to the cooling box 22.

[0055] The mobile device 52 includes a motor 521 and a linear slide module 522. The linear slide module 522 is connected to the output shaft of the motor 521. The linear slide module 522 includes a linear slide rail 5221 and a first slider 5222. The linear slide rail 5221 is arranged on the material transfer rack 51, and the first slider 5222 is arranged on the linear slide rail 5221. The third lifting device 53 is arranged on the first slider 5222. The linear slide rail 5221 extends from above the drying box 21 to above the cooling box 22. Among them, the linear slide module 522 is a prior art, so its specific working principle will not be elaborated here. When the mobile device 52 works, starting the motor 521 can drive the first slider 5222 to slide on the linear slide rail 5221, thereby driving the third lifting device 53 to move. By controlling the forward and reverse rotation of the motor 521, the moving direction of the first slider 5222 can be controlled, facilitating the movement of the clamping device 54 above the drying box 21 and the cooling box 22.

[0056] The material transfer mechanism 5 further includes a mounting plate 55. The mounting plate 55 is fixed above the first slider 5222 by screws, and the third lifting device 53 is arranged on the mounting plate 55.

[0057] The third lifting device 53 includes a lifting cylinder 531. The lifting cylinder 531 is fixed on the mounting plate 55. The piston rod of the lifting cylinder 531 passes through the mounting plate 55 and extends downward. The lifting cylinder 531 is vertically arranged. The clamping device 54 is connected to the piston rod of the lifting cylinder 531. There are two lifting cylinders 531, which are respectively located on both sides of the linear slide rail 5221. There are two clamping devices 54, which are correspondingly connected to the two lifting cylinders 531. By providing two lifting cylinders 531 and two clamping devices 54, multi-point clamping of the tray by the clamping device 54 can be achieved, thereby improving the stability of the tray during movement, avoiding the movement and collision of precision components on the tray, and further facilitating the guarantee of product quality.

[0058] The clamping device 54 includes a finger cylinder 541 and a clamping plate 542. The finger cylinder 541 is connected to the piston rod of the lifting cylinder 531, and the clamping plate 542 is connected to the piston rods on both sides of the finger cylinder 541. In actual use, a sliding groove 214 for the movement of the clamping plate 542 is opened at the top of the drying box 21. The tray can move along the sliding groove 214 and enter the cooling box 22 through the communication hole 213 after moving out of the drying box 21 without opening the drying box 21, greatly reducing heat dissipation and achieving an energy-saving effect. Through the finger cylinder 541, the clamping plates 542 on both sides of the finger cylinder 541 can be clamped and opened, facilitating the clamping and loosening of the tray.

[0059] The bottom end of the clamping plate 542 is provided with a hook 56 and an adjusting screw 57. The hook 56 is L-shaped, and a vertical groove 561 is provided on the vertical side of the hook 56. One end of the adjusting screw 57 is located outside the hook 56, and the other end passes through the vertical groove 561 and is fixed to the clamping plate 542. Among them, a threaded hole is provided on the outside of the clamping plate 542, which is convenient for the cooperation with the adjusting screw 57 through the threaded hole.

[0060] During use, when the telescopic stroke of the lifting cylinder 531 is determined, in order to adapt to the clamping of trays with different thicknesses, the hook 56 can be adjusted so that the horizontal side at the bottom end of the hook 56 moves up and down accordingly. Specifically, when the height position of the hook 56 needs to be adjusted, loosen the adjusting screw 57 so that the hook 56 can move along the direction of the vertical groove 561; when the height adjustment of the hook 56 is in place, tighten the adjusting screw 57 again so that the hook 56 is fixed at the corresponding height position to adapt to the clamping of trays with different thicknesses.

[0061] When the product in the drying box 21 gradually moves up with the tray and reaches the uppermost position, the drying is completed. At this time, when the piston rod of the lifting cylinder 531 extends downward, it pushes the finger cylinder 541 downward, and the finger cylinder 541 drives the clamping plate 542 to open outward; when the clamping plate 542 and the hook 56 move down in place, the finger cylinder 541 drives the clamping plate 542 to clamp the uppermost tray in the drying box 21; then the piston rod of the lifting cylinder 531 is pulled upward to drive the tray to move upward; then through the moving device 52, the mounting plate 55 moves along the linear slide rail 5221, so as to drive the tray to move out of the communication hole 213 and enter the cooling box 22. Subsequently, when the piston rod of the lifting cylinder 531 moves downward in place, the finger cylinder 541 releases the clamping plate 542, so that the tray is placed on the uppermost layer of the stack of trays in the cooling box 22, and the movement of the tray from the drying box 21 to the cooling box 22 is completed.

[0062] When the tray moves into the cooling box 22, under the action of the blanking mechanism 4, the tray gradually moves downward from top to bottom. During the gradual downward movement, under the action of the cooling device 7, the product on the tray is gradually cooled to room temperature, achieving the cooling effect. Therefore, there is no need to extend the entire channel, which is greatly shortened compared with the existing cooling channel. At the same time, the entire stack of products can be cooled, greatly improving the cooling efficiency.

[0063] Such as Figure 4 、Such as Figures 7 to 13As shown in the figure, the blanking mechanism 4 includes a blanking frame 41, a blocking device 42, a second lifting device 43, a second lifting and lowering device 44, a first front-back conveying device 45 and a second front-back conveying device 46. The blanking frame 41 is located on the other side of the frame 1. The second lifting and lowering device 44 and the first front-back conveying device 45 are arranged on the blanking frame 41. The second front-back conveying device 46 is located on one side of the first front-back conveying device 45. The second front-back conveying device 46 is located inside the cooling box 22. The second lifting device 43 is located below the cooling box 22. The top end of the second lifting device 43 penetrates through the bottom of the cooling box 22 and extends in. The blocking device 42 is located on both sides of the second front-back conveying device 46. Both the blocking device 42 and the second front-back conveying device 46 are located inside the cooling box 22. The first front-back conveying device 45 corresponds to the discharge port 221 of the cooling box 22. The structure of the second lifting and lowering device 44 is the same as that of the first lifting and lowering device 32, and the working principle is also the same.

[0064] During actual use, the structures of the first front-back conveying device 45 and the second front-back conveying device 46 are the same as that of the front-back moving device 33, that is, the front-back moving synchronous belt 332 is driven by a front-back moving motor for conveying, so as to realize the conveying of the tray on the corresponding front-back moving synchronous belt 332.

[0065] The structure of the second lifting device 43 is the same as that of the first lifting device 34. The difference is that the top end of the ejector rod 343 of the second lifting device 43 can directly act on the frame of the tray without connecting the support rod 344. The blocking device 42 includes a cylinder 421 and a baffle 422. The cylinder 421 is arranged inside the cooling box 22. The baffle 422 is connected to the cylinder 421 and is located above the second front-back conveying device 46. The ejector rod 343 of the second lifting device 43 is located between the baffles 422 on both sides. Specifically, the piston rod of the cylinder 421 is fixed above the bottom of the cooling box 22, and the baffle 422 is connected to the cylinder body of the cylinder 421. When the tray at the bottom of the cooling box 22 moves below the baffle 422, the cylinder body of the cylinder 421 moves relative to the piston rod, driving the baffle 422 to move to one side of the second front-back conveying device 46. At this time, through the baffles 422 on both sides, the other trays except the bottom tray can be prevented from being blocked, and the other trays are prevented from continuing to move down, so as to ensure that only one tray is placed downward on the second front-back conveying device 46 each time.

[0066] During use, the cylinder 421 drives the baffle 422 to push out, and the entire stack of trays in the cooling box 22 can be supported by the baffle 422. When the tray at the bottom of the cooling box 22 needs to be unloaded, the drive motor 341 in the second lifting device 43 starts, pushing the lifting plate and the ejector rod connected thereto to move upward. The ejector rod 343 of the second lifting device 43 acts upward on the tray at the bottom of the cooling box 22 to support the entire stack of trays; at this time, the cylinder 421 drives the baffle 422 to move to both sides, releasing the support and partition of the tray. Subsequently, the drive motor 341 in the second lifting device 43 reverses, causing the corresponding ejector rod 343 to support the tray and move downward. When the bottom tray moves down below the baffle 422, the baffle 422 is pushed out under the action of the cylinder 421, and under the action of the baffle 422, the remaining trays except the bottom tray are prevented from continuing to move down.

[0067] When the tray is placed downward on the front and rear moving synchronous belt 332 of the second front and rear conveying device 46 under the action of the second lifting device 43, the tray moves down in place; subsequently, the second front and rear conveying device 46 starts to work, causing the tray to be conveyed out from the discharge port under the action of the second front and rear conveying device 46 and conveyed onto the first front and rear conveying device 45, realizing the unloading of the tray in the oven. When the tray moves out to the first front and rear conveying device 45, the corresponding external equipment can take out the baked product from the tray. Subsequently, the lifting motor in the second lifting device 44 starts to work, driving the lifting frame 323 in the second lifting device 44 to move downward, thereby driving the entire first front and rear conveying device 45 to move downward, and the tray on the first front and rear conveying device 45 moves downward synchronously.

[0068] As Figure 4 、 Figure 7 、 Figure 11 and Figure 15 As shown in, the three-dimensional oven of the present invention further includes a tray circulation mechanism 30. The tray circulation mechanism 30 includes a circulation frame 301, a first motor 302, and a tray conveying belt 303. The circulation frame 301 is fixed on the frame 1 and is located below the box body 2. The first motor 302 is fixed on the frame 1. The tray conveying belt 303 is arranged on the circulation frame 301 and is connected to the output shaft of the first motor 302. One end of the tray conveying belt 303 corresponds to the first front and rear conveying device 45, and the other end corresponds to the front and rear moving device 33. The circulation frame 301 is located below the first lifting device 34 and the second lifting device 43. Therefore, the first motor 302 can drive the tray conveying belt 303 to convey, facilitating the conveyance of the tray on the tray conveying belt 303.

[0069] When the bottommost tray in the cooling box 22 is conveyed onto the first front-back conveying device 45, the products are taken out from the tray. Subsequently, under the action of the second lifting device 44, the first front-back conveying device 45 is driven to move downward. When the first front-back conveying device 45 descends to the height of the tray conveying belt 303, the first front-back conveying device 45 conveys the tray onto the tray conveying belt 303. Subsequently, the tray is conveyed on the tray conveying belt 303 and conveyed to the front-back moving device 33. When the tray moves toward the side of the front-back moving device 33 under the action of the tray conveying belt 303, the front-back moving device 33 moves downward under the drive of the first lifting device 32, and the front-back moving device 33 descends to the height of the tray conveying belt 303. Thus, the tray is conveyed onto the front-back synchronous belt 332 of the front-back moving device 33 through the tray conveying belt 303; then the first lifting device 32 drives the front-back moving device 33 to move upward, facilitating the placement of the products to be baked into the tray; then, the tray with products placed therein in the front-back moving device 33 enters the drying box 21 through the feed inlet 211 under the action of the front-back moving device 33, completing the entire cycle.

[0070] Thus, when the three-dimensional oven of the present invention is in use, under the mutual cooperation of each structure, the trays are gradually stacked upward in the drying box 21. When gradually moving upward, continuous heating of the products in multiple trays is realized, continuous entry and continuous output of the products are realized, the drying efficiency of the products is improved, and the utilization rate of thermal energy is greatly improved; when baking multiple products, there is no need to increase the length of the entire oven, thereby greatly shortening the space occupied by the entire oven and reducing the requirements for the factory building site. At the same time, the products in the entire stack of trays in the cooling box 22 are also cooled simultaneously, improving the cooling efficiency and reducing the space occupied by cooling, which is beneficial to reducing the volume of the entire oven. In actual use, the height and quantity of the stacked trays in the drying box 21 and the cooling box 22 can be increased accordingly according to actual use requirements, and the height of the entire box body 2 can be adjusted accordingly according to actual use requirements to meet different use requirements.

[0071] The above are only the preferred embodiments of the present invention, and it should be noted that for those of ordinary skill in the art, without departing from the inventive concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A three-dimensional oven, characterized in that, It includes a frame (1), a box body (2), a feeding mechanism (3), a discharging mechanism (4), a material transferring mechanism (5), a heating device (6) and a cooling device (7). The box body (2) is arranged on the frame (1). The box body (2) includes a drying box (21) and a cooling box (22). The heating device (6) is arranged on the drying box (21). The cooling device (7) is arranged on the cooling box (22). One side of the drying box (21) is provided with a feeding port (211). The cooling box (22) is located on the other side of the drying box (21). One side of the cooling box (22) is provided with a discharging port (221). The feeding mechanism (3) is arranged corresponding to the drying box (21). The discharging mechanism (4) corresponds to the cooling box (22). The material transferring mechanism (5) is arranged on the top of the box body (2). The material transferring mechanism (5) corresponds to the top of the drying box (21) and the top of the cooling box (22). A communication hole (213) is formed in the top of the drying box (21) close to the cooling box (22). A sliding groove (214) is arranged on the top of the drying box (21). The sliding groove (214) is communicated with the communication hole (213). The bottom end of the material transferring mechanism (5) penetrates through the sliding groove (214) and extends into the drying box (21). The heating device (6) includes a fan (61), a heating box (62) and heating tubes (63). The fan (61) is fixed on the outside of the drying box (21) and is located above the heating box (62). The heating box (62) is fixed on the outside of the drying box (21). The air outlet of the fan (61) is communicated with the heating box (62). The heating tubes (63) are arranged in the heating box (62). A plurality of ventilation holes (212) are arranged on the side wall of the drying box (21). The heating box (62) is communicated with the drying box (21) through the ventilation holes (212). The heating device (6) is located on the opposite sides of the drying box (21). The three-dimensional oven further includes a support frame (8) and a limiting rod (9). The support frame (8) is located at the bottom of the drying box (21). Limiting rods (9) are arranged in both the drying box (21) and the cooling box (22). The limiting rods (9) are arranged along the height direction of the drying box (21) and the cooling box (22). There are multiple limiting rods (9). Smooth strips (10) are arranged on the inner sides of the limiting rods (9). A reverse prevention component (20) is arranged on the support frame (8). The feeding mechanism (3) includes a feeding rack (31), a first lifting device (32), a front-back moving device (33) and a first jacking device (34). The feeding rack (31) is located on one side of the machine frame (1). The first lifting device (32) and the front-back moving device (33) are both arranged on the feeding rack (31). The first jacking device (34) is arranged on the machine frame (1) and is located below the drying box (21). The front-back moving device (33) is connected to the first lifting device (32). One end of the front-back moving device (33) corresponds to the feeding port (211) of the drying box (21). The top end of the first jacking device (34) can penetrate through the bottom of the drying box (21) and extend into the drying box (21). The top end of the first jacking device (34) corresponds to the anti-retreat assembly (20). The first jacking device (34) includes a driving motor (341), a jacking plate (342), a jacking rod (343) and a support rod (344). The driving motor (341) is arranged on the machine frame (1). The jacking plate (342) is connected to the output shaft of the driving motor (341). The jacking rod (343) is arranged on the jacking plate (342). There are multiple jacking rods (343). The jacking rods (343) penetrate through the bottom end of the drying box (21) and extend into the drying box (21). Both ends of the support rod (344) are fixed to the top ends of the jacking rods (343). The first lifting device (32) includes a lifting frame (323). The front-back moving device (33) includes a front-back moving motor (331), a front-back moving synchronous belt (332) and front-back moving synchronous pulleys (333). The front-back moving motor (331) is arranged on the lifting frame (323). There are two front-back moving synchronous pulleys (333). One of the front-back moving synchronous pulleys (333) is sleeved on the output shaft of the front-back moving motor (331). The other front-back moving synchronous pulley (333) is arranged on the lifting frame (323). The front-back moving synchronous belt (332) is sleeved on the two front-back moving synchronous pulleys (333). The front-back moving synchronous belt (332) corresponds to the feeding port (211).

2. The three-dimensional oven according to claim 1, characterized in that, The blanking mechanism (4) includes a blanking rack (41), a blocking device (42), a second lifting device (43), a second lifting and lowering device (44), a first front-back conveying device (45) and a second front-back conveying device (46). The blanking rack (41) is located on the other side of the machine frame (1). The second lifting and lowering device (44) and the first front-back conveying device (45) are arranged on the blanking rack (41). The second front-back conveying device (46) is located on one side of the first front-back conveying device (45). The second front-back conveying device (46) is located inside the cooling box (22). The second lifting device (43) is located below the cooling box (22). The top end of the second lifting device (43) penetrates through the bottom of the cooling box (22) and extends in. The blocking device (42) is located on both sides of the second front-back conveying device (46). Both the blocking device (42) and the second front-back conveying device (46) are located inside the cooling box (22). The first front-back conveying device (45) corresponds to the discharge port (221) of the cooling box (22).

3. The three-dimensional oven according to claim 2, characterized in that, The structure of the second lifting device (43) is the same as that of the first lifting device (34). The blocking device (42) includes a cylinder (421) and a baffle (422). The cylinder (421) is arranged inside the cooling box (22). The baffle (422) is connected to the cylinder (421) and is located above the second front-back conveying device (46). The support rod (344) of the second lifting device (43) is located between the baffles (422) on both sides.

4. The three-dimensional oven according to claim 2, wherein, It further includes a tray circulation mechanism (30). The tray circulation mechanism (30) includes a circulation rack (301), a first motor (302) and a tray conveying belt (303). The circulation rack (301) is fixed on the machine frame (1) and is located below the box body (2). The first motor (302) is fixed on the machine frame (1). The tray conveying belt (303) is arranged on the circulation rack (301) and is connected to the output shaft of the first motor (302). One end of the tray conveying belt (303) corresponds to the first front-back conveying device (45), and the other end corresponds to the front-back moving device (33). The circulation rack (301) is located below the first lifting device (34) and the second lifting device (43).

5. The three-dimensional oven according to claim 1, characterized in that The cooling device (7) includes an axial flow fan (71). The axial flow fans (71) are located on opposite sides of the cooling box (22). The drying box (21) and the cooling box (22) are separated by a partition (40).

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