An automated bread production line

Abstract

This invention discloses an automated bread production line, belonging to the field of bread production lines. It features an automated conveyor belt for dough transport, coupled with mechanisms for rolling, pressing, automatic butter addition and kneading, dough folding, refrigeration, filling addition, cutting, rolling, automatic traying and racking, automatic lidding, baking, and rotary conveying. This achieves a highly automated bread production line, requiring only minimal manual labor for finished product unloading, cleaning baking trays and lids, and pushing entire racks of bread in and out of the fermentation room. It eliminates the inconvenience of manual traying, whole-bread fermentation and racking, and kneading, and reduces the need for frequent manual movement between equipment, significantly increasing production efficiency. Furthermore, the dough undergoes multiple rolling and freezing processes, delaying fermentation to ensure better kneading before fermentation, preventing over-fermentation due to insufficient kneading during automated production.

Description

Technical Field

[0001] This invention belongs to the field of bread production lines, and specifically relates to an automated bread production line. Background Technology

[0002] Bread is a food made from ground grains and heated. It is mainly made from grain flour, with yeast, eggs, oil, sugar, salt and other ingredients as auxiliary materials. Water is added to form dough, which is then processed through processes such as dividing, shaping, proofing, baking and cooling. The assembly line for making bread is called a bread production line. However, when using existing technology, although there are automatic dough rolling and pressing equipment, the dough still needs to be manually moved back and forth between the equipment. Furthermore, steps such as adding and mixing butter, slicing bread and placing it on the fermentation rack after slicing, and fermenting the bread still require manual operation. The degree of automation is low, the labor intensity is high, and it is not convenient for continuous production. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To overcome the shortcomings of existing technologies, an automated bread production line is proposed to address the issue that, although existing technologies have automatic dough rolling and pressing equipment, manual handling is still required to move the dough between different machines. Furthermore, steps such as adding and mixing butter, slicing and packaging bread, and placing the bread on the fermentation rack in the fermentation room all still require manual operation. This results in low automation, high labor intensity, and inconvenience for continuous production.

[0005] (II) Technical Solution

[0006] The present invention is achieved through the following technical solution: The present invention proposes an automated bread production line, the structure of which includes a first production line, a fermentation room, a baking line and a discharge line. The first production line is used for dough processing. After the dough is processed by the first production line, it enters the fermentation room for fermentation. After fermentation, the dough is baked through the baking line. The baked bread is sent to the discharge line for discharge.

[0007] It also includes a baking tray rotary conveyor belt, a tray pusher, and a baking tray. The tray pusher is located at the switching point of each conveyor belt and is used to push the baking tray into the next step of conveying. The baking tray rotary conveyor belt is used to transport the baking trays that have been unloaded from the bread discharge line to the first production line.

[0008] The first production line consists of a dough conveyor belt, a hexagonal roller shaping machine, a dough pre-pressing machine, a freezing assembly rack, a first freezing line, a dough rolling machine, a dough kneading and pressing machine, a butter spreading device, a side-turning device, a reversing turning device, a flattening and pressing machine, a strip cutter, a filling spreading device, a filling flattening board, a filling rolling roller, a block cutter, a differential speed conveyor belt, a second freezing line, a tray conveyor belt, a first baking tray conveyor belt, and an automatic racking device. Two hexagonal roller shaping machines are provided, with one machine installed at the feed end of the dough conveyor belt. The hexagonal roller shaping machine... The dough is conveyed to the feed end of the dough pre-press machine via a dough conveyor belt. The discharge end of the dough pre-press machine is connected to the feed end of the first freezing line via the dough conveyor belt. The discharge end of the first freezing line is connected to the feed end of the second hexagonal roller shaping machine via the dough conveyor belt. There are two reversing and turning devices. The discharge end of the second hexagonal roller shaping machine is connected to the feed end of the first reversing and turning device via the dough conveyor belt. The feed end of the second reversing and turning device is connected to the discharge end of the first reversing and turning device via the dough conveyor belt.

[0009] Three sets of rolling mills and dough kneading machines are installed on the dough conveyor belt between the second hexagonal roller shaping machine and the first reversing and turning device. A butter spreading device and a side-turning device are installed between the second set of rolling mills, dough kneading machines and the third set of rolling mills, dough kneading machines. The butter spreading device is installed on the feeding side of the dough conveyor belt adjacent to the side-turning device. The butter spreading device is used to spread butter on the top layer of the dough. The side-turning device is used to turn the sides of the dough after spreading butter over to the middle of the dough.

[0010] The discharge end of the second reversing device is connected to the inlet end of the second freezing line via a dough conveyor belt. Three sets of rolling mills and dough kneading / pressing machines are also installed on the dough conveyor belt between the second reversing device and the second freezing line. The discharge end of the second freezing line is connected to a differential speed conveyor belt via the dough conveyor belt. A rolling mill, a flattening / pressing machine, a strip cutter, a filling / coating device, a filling / flattening board, a filling roll roller, and a cutting machine are sequentially installed on the dough conveyor belt between the second freezing line and the differential speed conveyor belt, according to the conveying sequence. The flattening / pressing machine is used to flatten the dough, the strip cutter is used to divide the dough into multiple strips, and the filling / coating device... This device is used to add filling to the top of a strip of dough. The filling spreading plate is used to spread the filling evenly. The filling rolling roller is used to roll the strip of dough into a strip roll. The cutting machine is used to cut the strip roll of dough into pieces. The differential speed conveyor belt is connected to the tray conveyor belt on the side away from the dough conveyor belt. The side of the tray conveyor belt away from the differential speed conveyor belt is located above the first baking tray conveyor belt. Baking trays are mounted on the first baking tray conveyor belt. The tray conveyor belt automatically drops the dough into the baking tray of the first baking tray conveyor belt below by means of extension and retraction. The discharge end of the first baking tray conveyor belt is connected to an automatic racking device. The automatic racking device is used for automatic racking of the baking trays.

[0011] The baking line consists of baking equipment, a baking conveyor belt, a second baking tray conveyor belt, a top cover loading and unloading rack, an automatic unloading device, a top cover rotary conveyor belt, and a third baking tray conveyor belt. The discharge end of the automatic unloading device is connected to the second baking tray conveyor belt, and one end of the top cover rotary conveyor belt is connected to the side of the second baking tray conveyor belt adjacent to the automatic unloading device. Two top cover loading and unloading racks are provided. The first top cover loading and unloading rack is installed at the connection between the top cover rotary conveyor belt and the second baking tray conveyor belt. The first top cover loading and unloading rack is used for baking... The automatic top cover of the baking tray is provided. The side of the second baking tray conveyor belt away from the automatic unloading device is connected to the feeding end of the baking equipment. The discharging end of the baking equipment is connected to the feeding end of the third baking tray conveyor belt. The discharging end of the third baking tray conveyor belt is connected to the side of the discharging end of the third baking tray conveyor belt. The side of the third baking tray conveyor belt is also connected to the other end of the top cover rotary conveyor belt. A second top cover loading and unloading frame is installed at the connection between the third baking tray conveyor belt and the top cover rotary conveyor belt. The second top cover loading and unloading frame is used for automatic unloading of the baking tray top cover.

[0012] The discharge line consists of a cooling conveyor belt and a discharge conveyor belt. The inlet end of the cooling conveyor belt is connected to the side end of the outlet end of the third baking tray conveyor belt. The side end of the outlet end of the cooling conveyor belt is connected to the discharge conveyor belt. The side end of the outlet end of the discharge conveyor belt is connected to the first baking tray conveyor belt through the baking tray rotary conveyor belt.

[0013] Furthermore, the unloading conveyor belt is provided with an unloading station on its side, the baking tray rotary conveyor belt is provided with a baking tray cleaning station on its side, and the top cover rotary conveyor belt is provided with a top cover cleaning station on its side.

[0014] Furthermore, there are two side-turning devices, which are respectively mounted on both sides of the dough conveyor belt and are staggered front to back.

[0015] Furthermore, the automatic racking equipment consists of a positioning conveyor belt, a first pallet, a first pallet groove, a pushing structure, a pusher motor, a pusher, a pallet assembly plate, a lifting motor, a circulating lifting chain, a lifting pump rod, a limit rod, a main frame, a second pallet, a sensor, casters, a second pallet groove, side protective wheels, a movable frame, a movable frame assembly plate, lifting protective side wheels, a limit covering plate, and a movable frame assembly plate. A positioning conveyor belt is installed on the lower side of one side inside the main frame, and the positioning conveyor belt is connected to the discharge end of the first baking tray conveyor belt. A circulating lifting chain is installed on both ends of the main frame perpendicular to the conveying direction of the positioning conveyor belt. The circulating lifting chain is driven by a lifting motor and is equipped with a pallet assembly plate. A first pallet is fixed to the pallet assembly plate adjacent to the side of the positioning conveyor belt. A first pallet groove is provided on the top of the first pallet, and a docking structure that cooperates with the first pallet groove is provided on the side of the baking tray.

[0016] The movable frame assembly plate is located inside the main frame on the other side. A limit cover plate is fixed to the side end face of the movable frame assembly plate, covering and fitting against the side rod of the main frame. The top center of the movable frame assembly plate is fixedly connected to the retractable rod of the lifting pump rod, which is assembled on the top of the main frame. One end of a limit rod is also fixed to the top of the movable frame assembly plate, and the other end of the limit rod penetrates through the top of the main frame and is clearance-fitted with the main frame. A lifting protective side wheel is also fixed to the side of the top of the movable frame assembly plate, and the wheel body of the lifting protective side wheel presses against the side rod of the main frame. A mirror image of the bottom of the movable frame assembly plate is fixed along the conveying direction of the positioning conveyor belt. The mobile frame assembly plate has two shapes, with the two horizontal plates facing each other. Side protective wheels are inlaid on both sides of the top of the mobile frame. The top pin of the mobile frame is assembled between the two mobile frame assembly plates. The bottom of the mobile frame is equipped with casters. A second pallet with the same structure as the first pallet is provided on the mobile frame in the same direction. The second pallet has a second pallet groove with the same groove as the first pallet. The push plate motor is fixed to the main frame and has a pallet assembly plate. The push plate motor is connected to a push plate through a pushing structure. The push plate is used to push the baking tray lifted on the first pallet to the second pallet. The sensor is used for position detection.

[0017] Furthermore, the butter spreading device consists of a conduit, a nozzle, an opening adjustment cover, and a butter conveying box. The butter conveying box is connected to the nozzle via the conduit. The nozzle is assembled at an acute angle to the conveying direction of the conveyor belt. An opening adjustment cover is provided at the outlet of the nozzle to adjust the discharge volume. The sandwich spreading device has the same structure as the butter spreading device.

[0018] Furthermore, the side-flipping device comprises an end guide plate, a feeding pressure roller, a side-flipping conveyor belt, a fixed assembly frame, a side-flipping assembly plate, a conveyor belt guide roller, and a side-flipping guide plate. The side-flipping assembly plate is fixed to the side of the dough conveyor belt. The end guide plate is fixed to the feeding end of the dough conveyor belt near the feeding end of the end guide plate. The fixed assembly frame is fixed to the end guide plate away from the side-flipping assembly plate and near the dough conveyor belt. The side-flipping assembly plate is equipped with a conveyor belt guide roller near the dough conveyor belt. The end guide plate is lower than the conveyor belt guide roller. A side-flipping guide plate is also fixed on the fixed assembly frame between the end guide plate and the conveyor belt guide roller. The side-flipping guide plate gradually increases in height towards the conveying direction and gradually widens towards the dough conveyor belt and gradually approaches the dough conveyor belt. The side-flipping conveyor belt wraps around and covers the end guide plate, the conveyor belt guide roller, and the side-flipping guide plate. The conveyor belt guide roller is used to drive the side-flipping conveyor belt to rotate. The feeding pressure roller is assembled on the fixed assembly frame away from the side-flipping assembly plate and is located above the end guide plate.

[0019] Furthermore, the reversing and turning device consists of a turning assembly frame, a turning machine platform, an adjusting motor, a protective baffle, a turning assembly plate, and turning guide rollers. There are two turning assembly frames, which are fixed across the dough conveyor belt on both sides. A turning machine platform is fixed to the top of each of the two turning assembly frames. A protective baffle is fixed to the top and one side of the turning machine platforms of the two turning assembly frames. Turning assembly plates are mounted on the opposite sides of the turning machine platforms of the two turning assembly frames via the shaft of the adjusting motor. Two sets of turning guide rollers are arranged in an inverted V-shape between the turning assembly plates.

[0020] Furthermore, the conveyor belt for loading trays comprises a first guide roller, a conveyor belt body, a telescopic assembly plate, a telescopic frame, a compression spring, an auxiliary guide roller, a telescopic pump rod, a second guide roller, a chute, and a conveyor assembly seat. The conveyor assembly seat is a U-shaped seat. A telescopic assembly plate is fixed above one side of the groove of the conveyor assembly seat. The telescopic frame is mounted through the telescopic assembly plate. The end of the telescopic frame away from the conveyor assembly seat is equipped with the first guide roller. The end of the telescopic frame adjacent to the conveyor assembly seat is fixedly connected to the conveyor assembly seat by a compression spring. The inner end face of the groove of the conveyor assembly seat is provided with a chute and a telescopic pump rod. The second guide roller is assembled in the chute. The telescopic pump rod is used to control the second guide roller to slide in the chute. An auxiliary guide roller is also assembled in the groove of the conveyor assembly seat. The auxiliary guide roller is used for assembly guidance of the conveyor belt body. The conveyor belt body is mounted around the first guide roller, the auxiliary guide roller, and the second guide roller. When the telescopic pump rod controls the second guide roller to slide in the chute, it can drive the telescopic frame equipped with the first guide roller to press against the compression spring.

[0021] Furthermore, the top cover loading and unloading frame consists of a main support frame, rails, a gantry, and suction cups. The main support frame is equipped with rails at the top, the gantry is mounted on the rails, and the bottom of the gantry is equipped with suction cups for picking up the top cover.

[0022] Furthermore, the automatic unloading device and the automatic loading device are identical in structure except for the pushing structure, the push plate motor, and the opposite assembly direction of the push plate. The push plate motor of the automatic unloading device is used to push the baking tray of the second tray onto the first tray.

[0023] (III) Beneficial Effects

[0024] One of the above technical solutions has the following advantages or beneficial effects:

[0025] To address the shortcomings of existing technologies, which, despite having automated dough rolling and pressing equipment, still require manual handling of the dough between different machines, and where steps such as adding and mixing butter, slicing and plating bread, and fermenting in the fermentation room still require manual operation, resulting in low automation, high labor intensity, and inconvenience for continuous production, a new technology is proposed. This technology features an automated conveyor belt system for transporting dough, along with automatic rolling, pressing, butter addition and kneading, folding and turning, cooling, adding fillings, slicing, rolling, automatic plating and shelving, and automatic loading / unloading. The automatic bread production line, featuring mechanisms for lowering the lid, baking, and rotary conveying, achieves a higher level of automation. Only a small amount of manual labor is required for unloading finished products, cleaning baking trays and their lids, and pushing entire racks of bread in and out of the fermentation room. This eliminates the inconvenience of manual tray loading, whole-bread fermentation and racking, and kneading, and also eliminates the need for frequent manual movement between equipment, greatly increasing production efficiency. At the same time, the dough undergoes multiple rolling and freezing processes, which delays fermentation and ensures that the dough can be better kneaded before fermentation, preventing the problem of over-fermentation of the dough due to insufficient kneading during automated production. Attached Figure Description

[0026] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the structure of an automated bread production line according to the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the first production line of the present invention;

[0029] Figure 3 This is a schematic diagram of the baking line and the discharge line structure of the present invention;

[0030] Figure 4 This is a cross-sectional structural diagram of the automatic racking equipment of the present invention;

[0031] Figure 5 For the present invention Figure 4 A magnified structural diagram of A in the middle;

[0032] Figure 6 This is a schematic diagram of the top cover loading and unloading frame of the present invention;

[0033] Figure 7 This is a schematic diagram of the structure of the butter spreading device of the present invention, viewed from the front.

[0034] Figure 8 This is a schematic diagram of the side-flipping device of the present invention;

[0035] Figure 9 This is a schematic diagram of the automatic unloading device of the present invention;

[0036] Figure 10 This is a schematic cross-sectional view of the reversing and flipping device of the present invention;

[0037] Figure 11 This is a schematic cross-sectional view of the conveyor belt for loading trays according to the present invention;

[0038] In the diagram: First production line - 1, Fermentation room - 2, Baking line - 3, Discharge line - 4, Baking tray rotary conveyor belt - 5, Pusher - 6, Baking tray - 7, Dough conveyor belt - 1a, Hexagonal roller shaping machine - 1b, Dough pre-pressing machine - 1c, Freezing assembly rack - 1d, First freezing line - 1e, Rolling machine - 1f, Kneading and pressing machine - 1g, Butter spreading equipment - 1h, Side turning device - 1i, Reversing turning device - 1j, Flattening and pressing machine - 1k, Strip cutter - 1l, Filling spreading equipment - 1m, Filling flattening plate - 1n, Filling rolling roller - 1o, Slicing machine - 1p, Differential speed conveyor belt - 1q, Second freezing line - 1r, Tray conveyor Belt-1s, First baking tray conveyor belt-1t, Automatic racking equipment-1u, Baking equipment-3a, Baking conveyor belt-3b, Second baking tray conveyor belt-3c, Top cover loading and unloading rack-3d, Automatic unloading equipment-3e, Top cover rotary conveyor belt-3f, Top cover cleaning station-3g, Third baking tray conveyor belt-3h, Cooling conveyor belt-4a, Unloading conveyor belt-4b, Unloading station-4c, Baking tray cleaning station-5a, Docking structure-7a, Positioning conveyor belt-1u1, First pallet-1u2, First pallet groove-1u3, Pushing structure-1u4, Pusher motor-1u5, Pusher plate-1u6, Pallet assembly plate-1u7, Lifting Lowering motor - 1u8, circulating lifting chain - 1u9, lifting pump rod - 1u10, limit rod - 1u11, main frame - 1u12, second pallet - 1u13, sensor - 1u14, caster wheel - 1u15, second pallet groove - 1u16, side protection wheel - 1u17, moving frame - 1u18, moving frame assembly plate - 1u19, lifting protection side wheel - 1u20, limit covering plate - 1u21, moving frame assembly plate - 1u22, guide tube - 1h1, nozzle - 1h2, opening adjustment cover - 1h3, grease conveying box - 1h4, end guide plate - 1i1, feeding pressure roller - 1i2, side tilting conveyor belt - 1i3, fixed Fixed assembly frame - 1i4, side tilting assembly plate - 1i5, conveyor belt guide roller - 1i6, side tilting guide plate - 1i7, tilting assembly frame - 1j1, tilting machine platform - 1j2, adjusting motor - 1j3, protective baffle - 1j4, tilting assembly plate - 1j5, tilting guide roller - 1j6, first guide roller - 1s1, conveyor belt body - 1s2, telescopic assembly plate - 1s3, telescopic frame - 1s4, compression spring - 1s5, auxiliary guide roller - 1s6, telescopic pump rod - 1s7, second guide roller - 1s8, chute - 1s9, conveyor assembly seat - 1s10, main support frame - 3d1, rail rod - 3d2, gantry - 3d3, suction cup - 3d4. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to embodiments, but the implementation of the present invention is not limited thereto.

[0040] The present invention provides an automated bread production line: its structure includes a first production line 1, a fermentation chamber 2, a baking line 3 and a discharge line 4. The first production line 1 is used for dough processing. After the dough is processed by the first production line 1, it enters the fermentation chamber 2 for fermentation. After fermentation, the dough is baked through the baking line 3. The baked bread is sent to the discharge line 4 for discharge.

[0041] It also includes a baking tray rotary conveyor belt 5, a tray pusher 6 and a baking tray 7. The tray pusher 6 is located at the switching point of each conveyor belt of the baking tray 7. The tray pusher 6 is used to push the baking tray 7 into the next step of conveying. The baking tray rotary conveyor belt 5 is used to transport the baking tray 7 after unloading bread from the discharge line 4 to the first production line 1.

[0042] The first production line 1 consists of a dough conveyor belt 1a, a hexagonal roller shaping machine 1b, a dough pre-pressing machine 1c, a freezing assembly rack 1d, a first freezing line 1e, a dough rolling machine 1f, a dough kneading and pressing machine 1g, a butter spreading device 1h, a side-turning device 1i, a reversing turning device 1j, a flattening and pressing machine 1k, a strip cutter 1l, a filling spreading device 1m, a filling flattening board 1n, a filling rolling roller 1o, a block cutting machine 1p, a differential speed conveyor belt 1q, a second freezing line 1r, a tray conveyor belt 1s, a first baking tray conveyor belt 1t, and an automatic racking device 1u. Two hexagonal roller shaping machines 1b are provided, and one hexagonal roller shaping machine 1b is installed at the feeding end of the dough conveyor belt 1a. The hexagonal roller shaping machine 1b conveys dough to the feed end of the dough pre-press machine 1c via the dough conveyor belt 1a. The discharge end of the dough pre-press machine 1c is connected to the feed end of the first freezing line 1e via the dough conveyor belt 1a. The discharge end of the first freezing line 1e is connected to the feed end of the second hexagonal roller shaping machine 1b via the dough conveyor belt 1a. Two reversing devices 1j are provided. The discharge end of the second hexagonal roller shaping machine 1b is connected to the feed end of the first reversing device 1j via the dough conveyor belt 1a. The feed end of the second reversing device 1j is connected to the discharge end of the first reversing device 1j via the dough conveyor belt 1a.

[0043] Three sets of rolling machines 1f and dough kneading and pressing machines 1g are installed on the dough conveyor belt 1a between the second hexagonal roller shaping machine 1b and the first reversing and turning device 1j. A butter spreading device 1h and a side-turning device 1i are installed between the second set of rolling machines 1f, dough kneading and pressing machines 1g and the third set of rolling machines 1f, dough kneading and pressing machines 1g. The butter spreading device 1h is installed on the feeding side of the dough conveyor belt 1a adjacent to the side-turning device 1i. The butter spreading device 1h is used to spread butter on the top layer of the dough. The side-turning device 1i is used to turn the sides of the dough after spreading butter over to the middle of the dough.

[0044] The discharge end of the second reversing device 1j is connected to the feed end of the second freezing line 1r via a dough conveyor belt 1a. Three sets of rolling machines 1f and dough kneading / pressing machines 1g are also mounted on the dough conveyor belt 1a between the second reversing device 1j and the second freezing line 1r. The discharge end of the second freezing line 1r is connected to a differential conveyor belt 1q via the dough conveyor belt 1a. The dough conveyor belt 1a between the second freezing line 1r and the differential conveyor belt 1q is equipped with, in sequence, a rolling machine 1f, a flattening / pressing machine 1k, a strip cutter 1l, a filling / spreading device 1m, a filling / flattening plate 1n, a filling roll 1o, and a cutting machine 1p. The flattening / pressing machine 1k is used to flatten the dough, and the strip cutter 1l is used to divide the dough into multiple strips. The filling spreading device 1m is used to add filling to the top of the strip dough. The filling spreading plate 1n is used to spread the filling flat. The filling rolling roller 1o is used to roll the strip dough into a strip roll. The cutting machine 1p is used to cut the strip roll dough into pieces. The differential speed conveyor belt 1q is connected to the tray conveyor belt 1s on the side away from the dough conveyor belt 1a. The side of the tray conveyor belt 1s away from the differential speed conveyor belt 1q is located above the first baking tray conveyor belt 1t. The first baking tray conveyor belt 1t is equipped with a baking tray 7. The tray conveyor belt 1s automatically drops the dough into the baking tray 7 of the first baking tray conveyor belt 1t by means of extension and retraction. The discharge end of the first baking tray conveyor belt 1t is connected to an automatic racking device 1u. The automatic racking device 1u is used for automatic racking of the baking tray 7.

[0045] The baking line 3 consists of a baking device 3a, a baking conveyor belt 3b, a second baking tray conveyor belt 3c, a top cover loading and unloading rack 3d, an automatic unloading device 3e, a top cover rotary conveyor belt 3f, and a third baking tray conveyor belt 3h. The discharge end of the automatic unloading device 3e is connected to the second baking tray conveyor belt 3c. The side end of the second baking tray conveyor belt 3c adjacent to the automatic unloading device 3e is connected to one end of the top cover rotary conveyor belt 3f. There are two top cover loading and unloading racks 3d. The first top cover loading and unloading rack 3d is installed at the connection between the top cover rotary conveyor belt 3f and the second baking tray conveyor belt 3c. d is used for the automatic top cover of the baking tray 7. The side end of the second baking tray conveyor belt 3c away from the automatic unloading device 3e is connected to the feeding end of the baking device 3a. The discharge end of the baking device 3a is connected to the feeding end of the third baking tray conveyor belt 3h. The discharge end of the third baking tray conveyor belt 3h is connected to the discharge line 4. The side end of the third baking tray conveyor belt 3h is also connected to the other end of the top cover rotary conveyor belt 3f. The second top cover loading and unloading frame 3d is installed at the connection between the third baking tray conveyor belt 3h and the top cover rotary conveyor belt 3f. The second top cover loading and unloading frame 3d is used for the automatic unloading of the top cover of the baking tray 7.

[0046] The discharge line 4 consists of a cooling conveyor belt 4a and a discharge conveyor belt 4b. The inlet end of the cooling conveyor belt 4a is connected to the side end of the discharge end of the third baking tray conveyor belt 3h. The side end of the discharge end of the cooling conveyor belt 4a is connected to the discharge conveyor belt 4b. The side end of the discharge end of the discharge conveyor belt 4b is connected to the first baking tray conveyor belt 1t through the baking tray rotary conveyor belt 5.

[0047] The unloading conveyor belt 4b is provided with an unloading station 4c on its side, the baking tray rotary conveyor belt 5 is provided with a baking tray cleaning station 5a on its side, and the top cover rotary conveyor belt 3f is provided with a top cover cleaning station 3g on its side.

[0048] The side-flipping device 1i is provided in two units, which are respectively mounted on both sides of the dough conveyor belt 1a and are staggered one after the other.

[0049] The automatic racking equipment 1u consists of a positioning conveyor belt 1u1, a first pallet 1u2, a first pallet groove 1u3, a pushing structure 1u4, a pusher motor 1u5, a pusher 1u6, a pallet assembly plate 1u7, a lifting motor 1u8, a circulating lifting chain 1u9, a lifting pump rod 1u10, a limit rod 1u11, a main frame 1u12, a second pallet 1u13, a sensor 1u14, casters 1u15, a second pallet groove 1u16, side protective wheels 1u17, a movable frame 1u18, a movable frame assembly plate 1u19, lifting protective side wheels 1u20, a limit covering plate 1u21, and a movable frame assembly plate 1u22. The main frame 1u12 is equipped with a lower side panel on one side. A positioning conveyor belt 1u1 is provided, which is connected to the discharge end of the first baking tray conveyor belt 1t. The main frame 1u12 is equipped with a circulating lifting chain 1u9 on both ends perpendicular to the conveying direction of the positioning conveyor belt 1u1. The circulating lifting chain 1u9 is driven by a lifting motor 1u8. The circulating lifting chain 1u9 is equipped with a pallet assembly plate 1u7. A first pallet 1u2 is fixed on the pallet assembly plate 1u7 adjacent to the side of the positioning conveyor belt 1u1. A first pallet groove 1u3 is provided on the top of the first pallet 1u2. The side of the baking tray 7 is provided with a docking structure 7a that cooperates with the first pallet groove 1u3. The docking structure 7a can be a roller or a docking plate.

[0050] The movable frame assembly plate 1u19 is located inside the main frame 1u12 on the other side. A limiting cover plate 1u21 is fixed to the side end face of the movable frame assembly plate 1u19. The limiting cover plate 1u21 covers and fits against the side rod of the main frame 1u12. The top center of the movable frame assembly plate 1u19 is fixedly connected to the telescopic rod of the lifting pump rod 1u10. The lifting pump rod 1u10 is assembled on the top of the main frame 1u12. A limiting rod is also fixed to the top of the movable frame assembly plate 1u19. One end of 1u11, the other end of the limiting rod 1u11 passes through the top of the main frame 1u12 and is clearance-fitted with the main frame 1u12. A lifting protective side wheel 1u20 is also fixed to the side of the top of the movable frame assembly plate 1u19. The wheel of the lifting protective side wheel 1u20 presses against the side rod of the main frame 1u12. Two L-shaped movable frame assembly plates 1u22 are fixed to the bottom of the movable frame assembly plate 1u19 in a mirror image along the conveying direction of the positioning conveyor belt 1u1. The movable frame assembly plates 1u22 are arranged facing each other. Side protective wheels 1u17 are inlaid on both sides of the top of the movable frame 1u18. The top pin of the movable frame 1u18 is fitted between the two movable frame assembly plates 1u22 and the movable frame assembly plate 1u19. A universal wheel 1u15 is fitted at the bottom of the movable frame 1u18. A second support plate 1u13 with the same structure as the first support plate 1u2 is provided on the movable frame 1u18 in the same direction. The second support plate 1u13 has a similar structure to... The second tray slot 1u16 is identical to the first tray slot 1u3. The pusher motor 1u5 is fixed to the main frame 1u12 and has a tray assembly plate 1u7. The pusher motor 1u5 is connected to a pusher plate 1u6 through a pusher structure 1u4. The pusher plate 1u6 is used to push the baking tray 7 held on the first tray 1u2 onto the second tray 1u13. The two ends of the first tray 1u2 are inclined downwards to facilitate sliding into the docking structure 7a during docking. The sensor 1u14 is used for position detection.

[0051] The pushing structure 1u4 is a robotic arm or telescopic pump rod (not shown in the diagram) or a lead screw structure (not shown in the diagram).

[0052] The butter spreading device 1h consists of a conduit 1h1, a nozzle 1h2, an opening adjustment cover 1h3, and a butter conveying box 1h4. The butter conveying box 1h4 is connected to the nozzle 1h2 through the conduit 1h1. The nozzle 1h2 is assembled at an acute angle to the conveying direction of the conveyor belt. The nozzle 1h2 is provided with an opening adjustment cover 1h3 at its outlet to adjust the discharge volume. The sandwich spreading device 1m has the same structure as the butter spreading device 1h.

[0053] The side-flipping device 1i comprises an end guide plate 1i1, a feeding roller 1i2, a side-flipping conveyor belt 1i3, a fixed assembly frame 1i4, a side-flipping assembly plate 1i5, a conveyor belt guide roller 1i6, and a side-flipping guide plate 1i7. The side-flipping assembly plate 1i5 is fixed to the side of the dough conveyor belt 1a. The end guide plate 1i1 is fixed to the feeding end of the dough conveyor belt 1a near the feeding end of the dough conveyor belt 1a. The fixed assembly frame 1i4 is fixed to the end guide plate 1i1 on the side away from the side-flipping assembly plate 1i5 and near the dough conveyor belt 1a. The side-flipping assembly plate 1i5 is equipped with a conveyor belt guide roller 1i6 on the side near the dough conveyor belt 1a. The end guide plate 1i1 is larger than the conveyor belt guide roller 1i7. Roller 1i6 is low. A side-flipping guide plate 1i7 is also fixed on the fixed assembly frame 1i4 between the end guide plate 1i1 and the conveyor belt guide roller 1i6. The side-flipping guide plate 1i7 gradually increases in height in the conveying direction. The side-flipping guide plate 1i7 gradually widens and gradually approaches the dough conveyor belt 1a. The side-flipping conveyor belt 1i3 surrounds and covers the end guide plate 1i1, the conveyor belt guide roller 1i6, and the side-flipping guide plate 1i7. The conveyor belt guide roller 1i6 is used to drive the side-flipping conveyor belt 1i3 to rotate. The feeding pressure roller 1i2 is mounted on the fixed assembly frame 1i4 away from the side-flipping assembly plate 1i5. The feeding pressure roller 1i2 is located above the end guide plate 1i1.

[0054] The reversing and flipping device 1j consists of a flipping assembly frame 1j1, a flipping machine table 1j2, an adjusting motor 1j3, a protective baffle 1j4, a flipping assembly plate 1j5, and flipping guide rollers 1j6. There are two flipping assembly frames 1j1, which are fixed across the dough conveyor belt 1a on both sides. The flipping machine table 1j2 is fixed to the top of each of the two flipping assembly frames 1j1. The protective baffle 1j4 is fixed to the top and one side of the flipping machine table 1j2 between the two flipping assembly frames 1j1. The flipping assembly plates 1j5 are mounted on the opposite sides of the flipping machine tables 1j2 of the two flipping assembly frames 1j1 via the shaft of the adjusting motor 1j3. Two sets of flipping guide rollers 1j6 are arranged in an inverted V-shape between the flipping assembly plates 1j5.

[0055] The tray conveyor belt 1s comprises a first guide roller 1s1, a conveyor belt body 1s2, a telescopic assembly plate 1s3, a telescopic frame 1s4, a compression spring 1s5, an auxiliary guide roller 1s6, a telescopic pump rod 1s7, a second guide roller 1s8, a chute 1s9, and a conveyor assembly seat 1s10. The conveyor assembly seat 1s10 is a U-shaped seat. The telescopic assembly plate 1s3 is fixed above one side of the groove of the conveyor assembly seat 1s10. The telescopic frame 1s4 is mounted through the telescopic assembly plate 1s3. The first guide roller 1s1 is mounted on the end of the telescopic frame 1s4 away from the conveyor assembly seat 1s10. The end of the telescopic frame 1s4 adjacent to the conveyor assembly seat 1s10 is connected to the conveyor assembly seat 1s10 by the compression spring 1s5. 10. Fixed connection. The inner end face of the groove of the conveying assembly seat 1s10 is provided with a sliding groove 1s9 and a telescopic pump rod 1s7. The second guide roller 1s8 is assembled in the sliding groove 1s9. The telescopic pump rod 1s7 is used to control the second guide roller 1s8 to slide in the sliding groove 1s9. An auxiliary guide roller 1s6 is also assembled in the groove of the conveying assembly seat 1s10. The auxiliary guide roller 1s6 is used to guide the assembly of the conveyor belt 1s2. The conveyor belt 1s2 is mounted around the first guide roller 1s1, the auxiliary guide roller 1s6, and the second guide roller 1s8. When the telescopic pump rod 1s7 controls the second guide roller 1s8 to slide in the sliding groove 1s9, it can drive the telescopic frame 1s4, which is equipped with the first guide roller 1s1, to press the compression spring 1s5.

[0056] The top cover loading and unloading frame 3d consists of a main support frame 3d1, a rail rod 3d2, a gantry 3d3, and a suction cup 3d4. The main support frame 3d1 has a rail rod 3d2 on top, the gantry 3d3 is mounted on the rail rod 3d2, and the bottom of the gantry 3d3 is equipped with a suction cup 3d4. The suction cup 3d4 is used to pick up the top cover, and the suction cup 3d4 can be a negative pressure suction cup or an electromagnetic suction cup.

[0057] The automatic unloading device 3e and the automatic loading device 1u are identical in structure except that the pushing structure 1u4, the push plate motor 1u5, and the push plate 1u6 are assembled in opposite directions. The push plate motor 1u5 of the automatic unloading device 3e is used to push the baking tray 7 of the second tray 1u13 onto the first tray 1u2.

[0058] Among them, a pusher 6 is provided at the connection between the baking conveyor belt 3b and the second baking tray conveyor belt 3c, a pusher 6 is also provided at the connection between the baking conveyor belt 3b and the third baking tray conveyor belt 3h, a pusher 6 is also provided at the connection between the third baking tray conveyor belt 3h and the cooling conveyor belt 4a, a pusher 6 is also provided at the connection between the unloading conveyor belt 4b and the baking tray rotary conveyor belt 5, and a pusher 6 is also provided at the connection between the baking tray rotary conveyor belt 5 and the first baking tray conveyor belt 1t.

[0059] The temperature of the first freezing line 1e is set to -16°C, and the temperature of the second freezing line 1r is set to -12°C.

[0060] Implementation Plan: During equipment operation, the dough is first pre-pressed into a strip shape by the hexagonal roller shaping machine 1b and the dough pre-pressing machine 1c on the first production line 1. The dough is then conveyed to the first freezing line 1e for freezing. Freezing delays fermentation. After being discharged, the frozen dough is shaped and kneaded by the hexagonal roller shaping machine 1b, and then rolled by two sets of dough rolling machines 1f and kneading and pressing machines 1g to ensure thorough kneading. A layer of butter is then applied to the dough through the nozzle 1h2 of the butter application device 1h. As the dough is conveyed, it enters the side-flipping device 1i along the conveying direction. The side of the dough is then pulled onto the side-flipping conveyor belt 1i3. With the expansion of the side-flipping guide plate 1i7 and the force of gravity, the dough gradually moves away from the side-flipping conveyor belt 1i3, folding upwards along the arc surface of the side-flipping guide plate 1i7 to cover the dough, thus achieving butter coating. Then, the dough is rolled and kneaded by a dough rolling machine 1f and a dough kneading and pressing machine 1g. The dough is also folded and conveyed by a reversing and turning device 1j to allow for better kneading. During the turning process, the dough can be pulled and folded by adjusting the swing of the turning assembly plate 1j5 by the motor 1j3 to make the subsequent kneading more even. After being rolled and pressed by multiple dough rolling machines 1f and dough kneading and pressing machines 1g, the dough is first sent to the second freezing line 1r for secondary cooling and freezing to prevent the dough from fermenting prematurely during the automatic production process. After the secondary freezing, the dough is rolled flat and then cut into appropriate strips. After the small strips are cut, the filling material can be added through the nozzle 1h2 of the filling coating device 1m. The filling material can be evenly spread by the filling spreading plate 1n. Then, the dough is rolled into rolls by the guide roller 1o and the conveyor belt to wrap the filling material. Finally, it can be cut into pieces by the block cutter 1p.

[0061] After being cut into pieces, the bread pieces are separated by a suitable distance by the speed difference of the differential conveyor belt 1q, and then enter the tray conveyor belt 1s. When the bread is conveyed above the baking tray 7, the tray conveyor belt 1s can use the telescopic pump rod 1s7 to drive the second guide roller 1s8 to pull the conveyor belt body 1s2, so that the conveyor belt body 1s2 drives the first guide roller 1s1 to press against the telescopic frame 1s4 to retract, so that the bread pieces above the baking tray 7 will fall into the baking tray. Then the second guide roller 1s8 is retracted, and the first guide roller 1s1 is pressed against the protective baffle 1j4 by the compression spring 1s5 to extend. This process is repeated to achieve automatic traying.

[0062] After being automatically loaded onto the baking tray, the bread pieces are conveyed along with the baking tray 7 by the first baking tray conveyor belt 1t to the positioning conveyor belt 1u1 of the automatic racking equipment 1u. The positioning conveyor belt 1u1 transports the baking tray 7 to the appropriate position, and then the lifting motor 1u8 drives the circulating lifting chain 1u9 to perform a lifting cycle. This causes the pallet assembly plate 1u7 mounted on the circulating lifting chain 1u9 to lift the baking tray 7 via the docking structure 7a of the first pallet 1u2. After lifting an appropriate amount of baking tray, the moving frame 1u18 is assembled into the moving frame assembly plate 1u22 via the top pin. During assembly, the side protective wheels 1u17 reduce impacts. Then, [the process continues]. The lifting pump rod 1u10 raises the moving frame assembly plate 1u19, which in turn raises the moving frame 1u18. During the lifting and lowering process, the lifting protective side wheel 1u20 and the limiting cover plate 1u21 of the moving frame assembly plate 1u19 can make its lifting and lowering more stable. When the moving frame 1u18 is raised to the level of the corresponding second tray 1u13 and the first tray 1u2, the push plate 1u6 can be pushed out by the push plate motor 1u5 and the push structure 1u4, so that the push plate 1u6 pushes the baking tray 7 on the first tray 1u2 onto the second tray 1u13 for assembly, realizing the automatic loading of the baking tray 7. Then, the manual labor only needs to push the whole rack of bread pieces into the fermentation room 2 for fermentation.

[0063] After fermentation, the movable frame 1u18 can be pushed to the movable frame assembly plate 1u22 of the automatic unloading device 3e for assembly. Then, the pusher motor 1u5 and the pusher structure 1u4 of the automatic unloading device 3e push the baking tray 7 onto the first support plate 1u2 of the automatic unloading device 3e. The reverse-rotating circulating lifting chain 1u9 of the automatic unloading device 3e lowers the baking tray 7 onto the positioning conveyor belt 1u1 of the automatic unloading device 3e, and then transports it to the second baking tray conveyor belt 3c via the positioning conveyor belt 1u1. The baking tray 7 on the second baking tray conveyor belt 3c will have its lid added via the top cover loading and unloading rack 3d, and then it will be transported again and pushed onto the baking conveyor belt 3b via the pusher 6 for baking. The baked baking tray 7 is then pushed onto the third baking tray conveyor belt 3h via the pusher 6. During the transport process, the top cover of the baking tray 7 will be removed by the second top cover loading and unloading rack 3d. After the top cover is removed by adsorption, the second top cover loading and unloading rack 3d will place the removed top cover on the top cover rotary conveyor belt 3f for rotary conveying at the top cover addition point. The baking tray 7 with the top cover removed is pushed to the cooling conveyor belt 4a by the tray pusher 6 for cooling, and then pushed to the unloading conveyor belt 4b by the tray pusher 6 for discharge. The baking tray 7 with bread removed is pushed to the baking tray rotary conveyor belt 5 by the tray pusher 6 for rotary conveying of the first baking tray conveyor belt 1t, forming a complete circulating production line. Only a small amount of manpower is needed to clean the baking tray 7 and the top cover, as well as the conveying of fermentation in the fermentation room, the placement of dough, and the discharge of bread. The conveying in the fermentation room also adopts a mobile frame 1u12 with universal wheels 1u15 for whole-frame conveying, which is convenient and fast, enabling better automated production of bread, ensuring uniform kneading in automated production, preventing premature fermentation, eliminating the need for manual tray loading, and facilitating continuous production.

[0064] In the description of this invention, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0065] The control method of this invention is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this invention is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0066] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0067] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automated bread production line, the structure of which includes a first production line (1), a fermentation chamber (2), a baking line (3) and a discharge line (4), wherein the first production line (1) is used for dough processing, the dough is processed by the first production line (1) and then enters the fermentation chamber (2) for fermentation, the dough is baked by the baking line (3) after fermentation, and the baked bread is sent to the discharge line (4) for discharge; Its features are: It also includes a baking tray rotary conveyor belt (5), a tray pusher (6) and a baking tray (7). The tray pusher (6) is located at the switching point of each conveyor belt of the baking tray (7). The tray pusher (6) is used to push the baking tray (7) into the next step of conveying. The baking tray rotary conveyor belt (5) is used to transport the baking tray (7) after unloading bread from the discharge line (4) to the first production line (1). The first production line (1) consists of a dough conveyor belt (1a), a hexagonal roller shaping machine (1b), a dough pre-pressing machine (1c), a freezing assembly rack (1d), a first freezing line (1e), a dough rolling machine (1f), a dough kneading and pressing machine (1g), a butter spreading device (1h), a side-flipping device (1i), a reversing flipping device (1j), a flattening and pressing machine (1k), and a strip cutter (1l). The system comprises a filling spreading device (1m), a filling spreading plate (1n), a filling rolling roller (1o), a cutting machine (1p), a differential speed conveyor belt (1q), a second freezing line (1r), a tray conveyor belt (1s), a first baking tray conveyor belt (1t), and an automatic racking device (1u). Two hexagonal roller shaping machines (1b) are provided. One hexagonal roller shaping machine (1b) is installed at the feeding end of the dough conveyor belt (1a). The hexagonal roller shaping machine (1b) conveys dough to the feeding end of the dough pre-pressing machine (1c) via the dough conveyor belt (1a). The discharging end of the dough pre-pressing machine (1c)... The dough conveyor belt (1a) is connected to the feed end of the first freezing line (1e). The discharge end of the first freezing line (1e) is connected to the feed end of the second hexagonal roller shaping machine (1b) via the dough conveyor belt (1a). There are two reversing devices (1j). The discharge end of the second hexagonal roller shaping machine (1b) is connected to the feed end of the first reversing device (1j) via the dough conveyor belt (1a). The feed end of the second reversing device (1j) is connected to the discharge end of the first reversing device (1j) via the dough conveyor belt (1a). Three sets of the rolling mill (1f) and the dough rolling and pressing machine (1g) are installed on the dough conveyor belt (1a) between the second hexagonal roller shaping machine (1b) and the first reversing and turning device (1j). A butter spreading device (1h) and a side-turning device (1i) are installed between the second set of the rolling mill (1f) and the dough rolling and pressing machine (1g) and the third set of the rolling mill (1f) and the dough rolling and pressing machine (1g). The butter spreading device (1h) is installed on the feeding side of the dough conveyor belt (1a) adjacent to the side-turning device (1i). The butter spreading device (1h) is used to spread butter on the top layer of the dough. The side-turning device (1i) is used to turn the sides of the dough after spreading butter over to the middle of the dough. The discharge end of the second reversing device (1j) is connected to the feed end of the second freezing line (1r) via a dough conveyor belt (1a). Three sets of rolling machines (1f) and dough kneading / pressing machines (1g) are also mounted on the dough conveyor belt (1a) between the second reversing device (1j) and the second freezing line (1r). The discharge end of the second freezing line (1r) is connected to a differential conveyor belt (1q) via the dough conveyor belt (1a). A rolling machine (1f), a flattening / pressing machine (1k), and a strip cutter (1l) are sequentially mounted on the dough conveyor belt (1a) between the second freezing line (1r) and the differential conveyor belt (1q) in the order of conveying. The system includes a filling coating device (1m), a filling flattening plate (1n), a filling rolling roller (1o), and a cutting machine (1p). The flattening and pressing machine (1k) is used to flatten the dough. The strip cutter (1l) is used to divide the dough into multiple strips. The filling coating device (1m) is used to add filling to the top of the strip-shaped dough. The filling flattening plate (1n) is used to spread the coated filling evenly. The filling rolling roller (1o) is used to roll the strip-shaped dough into strips. The cutting machine (1p) is used to cut the strip-shaped dough into pieces. The differential speed conveyor belt (1q) is located away from the dough. The conveyor belt (1a) is connected to the tray conveyor belt (1s) on the side away from the differential conveyor belt (1q) and is located above the first baking tray conveyor belt (1t). The first baking tray conveyor belt (1t) is equipped with a baking tray (7). The tray conveyor belt (1s) automatically drops the dough into the baking tray (7) of the first baking tray conveyor belt (1t) below by means of extension and retraction. The discharge end of the first baking tray conveyor belt (1t) is connected to an automatic racking device (1u). The automatic racking device (1u) is used for the automatic racking of the baking tray (7). The baking line (3) consists of a baking device (3a), a baking conveyor belt (3b), a second baking tray conveyor belt (3c), a top cover loading and unloading rack (3d), an automatic unloading device (3e), a top cover rotary conveyor belt (3f), and a third baking tray conveyor belt (3h). The discharge end of the automatic unloading device (3e) is connected to the second baking tray conveyor belt (3c). The side end of the second baking tray conveyor belt (3c) adjacent to the automatic unloading device (3e) is connected to one end of the top cover rotary conveyor belt (3f). There are two top cover loading and unloading racks (3d). The first top cover loading and unloading rack (3d) is installed at the connection between the top cover rotary conveyor belt (3f) and the second baking tray conveyor belt (3c). (3d) is used for the automatic top cover of the baking tray (7). The side end of the second baking tray conveyor belt (3c) away from the automatic unloading device (3e) is connected to the feeding end of the baking device (3a). The discharge end of the baking device (3a) is connected to the feeding end of the third baking tray conveyor belt (3h). The discharge end of the third baking tray conveyor belt (3h) is connected to the discharge line (4). The side end of the third baking tray conveyor belt (3h) is also connected to the other end of the top cover rotary conveyor belt (3f). The second top cover loading and unloading frame (3d) is installed at the connection between the third baking tray conveyor belt (3h) and the top cover rotary conveyor belt (3f). The second top cover loading and unloading frame (3d) is used for the automatic unloading of the top cover of the baking tray (7). The discharge line (4) consists of a cooling conveyor belt (4a) and a discharge conveyor belt (4b). The feeding end of the cooling conveyor belt (4a) is connected to the side end of the discharge end of the third baking tray conveyor belt (3h). The side end of the discharge end of the cooling conveyor belt (4a) is connected to the discharge conveyor belt (4b). The side end of the discharge end of the discharge conveyor belt (4b) is connected to the first baking tray conveyor belt (1t) through the baking tray rotary conveyor belt (5).

2. The automated bread production line according to claim 1, characterized in that: The unloading conveyor belt (4b) is also provided with an unloading station (4c) on its side, the baking tray rotary conveyor belt (5) is also provided with a baking tray cleaning station (5a) on its side, and the top cover rotary conveyor belt (3f) is also provided with a top cover cleaning station (3g) on ​​its side.

3. An automated bread production line according to claim 1, characterized in that: There are two side-flipping devices (1i), which are respectively mounted on both sides of the dough conveyor belt (1a) and are staggered one after the other.

4. An automated bread production line according to claim 1, characterized in that: The automatic racking equipment (1u) consists of a positioning conveyor belt (1u1), a first pallet (1u2), a first pallet groove (1u3), a pushing structure (1u4), a pusher motor (1u5), a pusher (1u6), a pallet assembly plate (1u7), a lifting motor (1u8), a circulating lifting chain (1u9), a lifting pump rod (1u10), a limit rod (1u11), a main frame (1u12), a second pallet (1u13), a sensor (1u14), casters (1u15), a second pallet groove (1u16), side protective wheels (1u17), a moving frame (1u18), a moving frame assembly plate one (1u19), lifting protective side wheels (1u20), a limit covering plate (1u21), and a moving frame assembly plate two (1u22). The main frame... A positioning conveyor belt (1u1) is installed on one side of the main body (1u12) below. The positioning conveyor belt (1u1) is connected to the discharge end of the first baking tray conveyor belt (1t). The main frame body (1u12) is equipped with a circulating lifting chain (1u9) on both sides of the end face perpendicular to the conveying direction of the positioning conveyor belt (1u1). The circulating lifting chain (1u9) is driven by a lifting motor (1u8). The circulating lifting chain (1u9) is equipped with a pallet assembly plate (1u7). A first pallet (1u2) is fixed on the side of the pallet assembly plate (1u7) adjacent to the positioning conveyor belt (1u1). A first pallet groove (1u3) is provided on the top of the first pallet (1u2). The side of the baking tray (7) is provided with a docking structure (7a) that cooperates with the first pallet groove (1u3). The first movable frame assembly plate (1u19) is located inside the main frame (1u12) on the other side. A limiting cover plate (1u21) is fixed to the side end face of the first movable frame assembly plate (1u19). The limiting cover plate (1u21) covers and fits against the side rod of the main frame (1u12). The top center of the first movable frame assembly plate (1u19) is fixedly connected to the telescopic rod of the lifting pump rod (1u10). The lifting pump rod (1u10) is assembled on the top of the main frame (1u12). One end of a limit rod (1u11) is fixed at the top, and the other end of the limit rod (1u11) passes through the top of the main frame (1u12) and is clearance-fitted with the main frame (1u12). A lifting protective side wheel (1u20) is also fixed to the side of the top of the first mobile frame assembly plate (1u19). The wheel of the lifting protective side wheel (1u20) presses against the side rod of the main frame (1u12). Two L-shaped movable frames are fixed in a mirror image at the bottom of the first mobile frame assembly plate (1u19) along the conveying direction of the positioning conveyor belt (1u1). The second frame assembly plate (1u22) consists of two L-shaped horizontal plates facing each other. Side protective wheels (1u17) are inlaid on both sides of the top of the movable frame (1u18). The top pin of the movable frame (1u18) is fitted between the two second frame assembly plates (1u22) and the first frame assembly plate (1u19). A caster wheel (1u15) is fitted to the bottom of the movable frame (1u18). A second support plate (1u2) with the same structure as the first support plate (1u2) is provided on the movable frame (1u18) in the same direction. The second tray (1u13) has a second tray groove (1u16) that is the same as the first tray groove (1u3). The pusher motor (1u5) is fixed to the main frame (1u12) and has a tray assembly plate (1u7). The pusher motor (1u5) is connected to the pusher plate (1u6) through the pusher structure (1u4). The pusher plate (1u6) is used to push the baking tray (7) held on the first tray (1u2) onto the second tray (1u13). The sensor (1u14) is used for position detection.

5. An automated bread production line according to claim 1, characterized in that: The butter spreading device (1h) consists of a conduit (1h1), a nozzle (1h2), an opening adjustment cover (1h3), and a butter conveying box (1h4). The butter conveying box (1h4) is connected to the nozzle (1h2) through the conduit (1h1). The nozzle (1h2) is assembled at an acute angle to the conveying direction of the conveyor belt. The nozzle (1h2) has an opening adjustment cover (1h3) at its outlet to adjust the discharge volume. The sandwich spreading device (1m) has the same structure as the butter spreading device (1h).

6. An automated bread production line according to claim 2, characterized in that: The side-flipping device (1i) consists of an end guide plate (1i1), a feeding pressure roller (1i2), a side-flipping conveyor belt (1i3), a fixed assembly frame (1i4), a side-flipping assembly plate (1i5), a conveyor belt guide roller (1i6), and a side-flipping guide plate (1i7). The side-flipping assembly plate (1i5) is fixed to the side of the dough conveyor belt (1a). The end guide plate (1i1) is fixed to the feeding end of the dough conveyor belt (1a) with the fixed assembly frame (1i4) attached. The fixed assembly frame (1i4) is fixed to the side of the dough conveyor belt (1a) away from the side-flipping assembly plate (1i5). The side-flipping assembly plate (1i5) is equipped with a conveyor belt guide roller (1i6) attached to the side of the dough conveyor belt (1a). The end guide plate (1i1) is larger than the conveyor belt guide roller (1i7). The roller (1i6) is low, and a side-flipping guide plate (1i7) is also fixed on the fixed assembly frame (1i4) between the end guide plate (1i1) and the conveyor belt guide roller (1i6). The side-flipping guide plate (1i7) gradually increases in height in the conveying direction. The side-flipping guide plate (1i7) gradually widens and gradually approaches the dough conveyor belt (1a) in the direction of the dough conveyor belt (1a). The side-flipping conveyor belt (1i3) surrounds and covers the end guide plate (1i1), the conveyor belt guide roller (1i6), and the side-flipping guide plate (1i7). The conveyor belt guide roller (1i6) is used to drive the side-flipping conveyor belt (1i3) to rotate. The feeding pressure roller (1i2) is mounted on the fixed assembly frame (1i4) away from the side-flipping assembly plate (1i5). The feeding pressure roller (1i2) is located above the end guide plate (1i1).

7. An automated bread production line according to claim 1, characterized in that: The reversing and flipping device (1j) consists of a flipping assembly frame (1j1), a flipping machine table (1j2), an adjusting motor (1j3), a protective baffle (1j4), a flipping assembly plate (1j5), and flipping guide rollers (1j6). There are two flipping assembly frames (1j1), which span the dough conveyor belt (1a) and are fixed on both sides of the dough conveyor belt (1a). The flipping machine table (1j2) is fixed at the top of each of the two flipping assembly frames (1j1). A protective baffle (1j4) is fixed between the top and one side of the flipping machine table (1j2) of the two flipping assembly frames (1j1). The flipping machine table (1j2) of the two flipping assembly frames (1j1) is equipped with a flipping assembly plate (1j5) on the opposite side through the shaft of the adjusting motor (1j3). Two sets of flipping guide rollers (1j6) are arranged in an inverted V-shape between the flipping assembly plates (1j5).

8. An automated bread production line according to claim 1, characterized in that: The tray conveyor belt (1s) consists of a first guide roller (1s1), a conveyor belt body (1s2), a telescopic assembly plate (1s3), a telescopic frame (1s4), a compression spring (1s5), an auxiliary guide roller (1s6), a telescopic pump rod (1s7), a second guide roller (1s8), a chute (1s9), and a conveyor assembly seat (1s10). The conveyor assembly seat (1s10) is a U-shaped seat. The telescopic assembly plate (1s3) is fixed above one side of the groove of the conveyor assembly seat (1s10). The telescopic frame (1s4) is mounted through the telescopic assembly plate (1s3). The first guide roller (1s1) is mounted on the end of the telescopic frame (1s4) away from the conveyor assembly seat (1s10). The end of the telescopic frame (1s4) adjacent to the conveyor assembly seat (1s10) is connected to the conveyor assembly seat (1s10) by the compression spring (1s5). The conveyor assembly base (1s10) is fixedly connected. The inner end face of the groove is provided with a sliding groove (1s9) and a telescopic pump rod (1s7). The second guide roller (1s8) is assembled in the sliding groove (1s9). The telescopic pump rod (1s7) is used to control the second guide roller (1s8) to slide in the sliding groove (1s9). The groove of the conveyor assembly base (1s10) is also equipped with an auxiliary guide roller (1s6). The auxiliary guide roller (1s6) is used for assembly guidance of the conveyor belt (1s2). The conveyor belt (1s2) is mounted around the first guide roller (1s1), the auxiliary guide roller (1s6), and the second guide roller (1s8). When the telescopic pump rod (1s7) controls the second guide roller (1s8) to slide in the sliding groove (1s9), it can drive the telescopic frame (1s4) equipped with the first guide roller (1s1) to press the compression spring (1s5).

9. An automated bread production line according to claim 5, characterized in that: The top cover loading and unloading frame (3d) consists of a main support frame (3d1), a rail (3d2), a gantry (3d3), and a suction cup (3d4). The main support frame (3d1) is equipped with a rail (3d2) at the top. The gantry (3d3) is mounted on the rail (3d2). The bottom of the gantry (3d3) is equipped with a suction cup (3d4), which is used to pick up the top cover.

10. An automated bread production line according to claim 4, characterized in that: The automatic unloading device (3e) and the automatic loading device (1u) are identical in structure except that the pushing structure (1u4), the push plate motor (1u5), and the push plate (1u6) are assembled in opposite directions. The push plate motor (1u5) of the automatic unloading device (3e) is used to push the baking tray (7) of the second tray (1u13) onto the first tray (1u2).

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