Sheet body feeding device

Abstract

The utility model provides a sheet body feeding device. The sheet body feeding device comprises a sheet body conveying line, a first material box conveying line, a second material box conveying line, a first box changing conveying mechanism, a second box changing conveying mechanism and at least one feeding mechanism. The sheet body conveying line is provided with a bearing station, and the first material box conveying line and the second material box conveying line are arranged on the two sides of the sheet body conveying line and provided with a first feeding station and a second feeding station corresponding to the bearing station respectively. The feeding mechanism is configured to feed the sheet bodies in the material boxes of the first feeding station or the second feeding station to the receiving station. The first box changing conveying mechanism is configured to convey material boxes full of sheet bodies to the first material box conveying line and receive empty material boxes output by the first material box conveying line, and the second box changing conveying mechanism is configured to convey the material boxes full of sheet bodies to the second material box conveying line and receive empty material boxes output by the second material box conveying line. According to the automatic box changing device, automatic box changing of the material boxes on the two sides of the sheet body conveying line is achieved, and the box changing efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic cell module production equipment, and more particularly to a sheet feeding device. Background Art

[0002] During the production of photovoltaic cell modules, it is necessary to pick up silicon wafers from a cassette at the loading station located beside the silicon wafer conveyor line through a loading mechanism, and then place the silicon wafers on the silicon wafer conveyor line. The silicon wafer conveyor line transports the silicon wafers to the subsequent processing stations.

[0003] When the silicon wafers in the cassette are emptied, it is necessary to perform a cassette replacement operation, that is, to remove the emptied cassette from the loading station and then place the cassette filled with silicon wafers at the loading station. Currently, the cassette replacement operation is generally carried out manually, resulting in low efficiency of cassette replacement and low feeding efficiency of silicon wafers. Summary of the Utility Model

[0004] To solve the above technical problems, this application provides a sheet feeding device, which adopts the following technical solutions:

[0005] A sheet feeding device includes a sheet conveyor line, a first cassette conveyor line, a second cassette conveyor line, a first cassette replacement conveyor mechanism, a second cassette replacement conveyor mechanism, and at least one loading mechanism, wherein:

[0006] The sheet conveyor line is configured to convey sheets, and there are at least one receiving station on the conveying path of the sheet conveyor line;

[0007] The first cassette conveyor line is arranged side by side on the first side of the sheet conveyor line, and the first cassette conveyor line is configured to convey cassettes. There are first loading stations on the conveying path of the first cassette conveyor line that correspond one-to-one with the receiving stations;

[0008] The second cassette conveyor line is arranged side by side on the second side of the sheet conveyor line, and the second cassette conveyor line is configured to convey cassettes. There are second loading stations on the conveying path of the second cassette conveyor line that correspond one-to-one with the receiving stations;

[0009] One loading mechanism is correspondingly arranged at each receiving station. The loading mechanism is configured to pick up sheets from the cassette at the first loading station or the second loading station corresponding to the receiving station, and load the picked-up sheets onto the receiving station;

[0010] The first cassette replacement conveyor mechanism is docked with the first cassette conveyor line, and the first cassette replacement conveyor mechanism is configured to convey the cassette filled with sheets to the first cassette conveyor line and receive the emptied cassette output by the first cassette conveyor line;

[0011] The second box-changing conveying mechanism is connected to the second material box conveying line. The second box-changing conveying mechanism is configured to convey the material box filled with sheets to the second material box conveying line, and to receive the empty material box output by the second material box conveying line.

[0012] The sheet feeding device provided by the present application has a first material box conveyor line and a first box-changing conveyor mechanism that cooperate with each other to realize the automatic box-changing operation of the material box located on the first side of the sheet conveyor line, and a second material box conveyor line and a second box-changing conveyor mechanism that cooperate with each other to realize the automatic box-changing operation of the material box located on the second side of the sheet conveyor line, thereby improving the box-changing efficiency and ultimately improving the feeding efficiency of the sheet conveyor line. In addition, because loading stations are provided on both sides of the sheet conveyor line, when the material box on one side is emptied and the box-changing operation is performed, the loading mechanism can pick up the sheet from the material box on the other side, avoiding the need to wait for loading, thereby further improving the feeding efficiency of the sheet conveyor line.

[0013] In some embodiments, the loading mechanism includes an intermediate adsorption conveying part, a first adsorption conveying part and a second adsorption conveying part, wherein: the intermediate adsorption conveying part is located above the receiving station; the first adsorption conveying part is located above the first loading station corresponding to the receiving station, and the first adsorption conveying part is docked with the first end of the intermediate adsorption conveying part; the second adsorption conveying part is located above the second loading station corresponding to the receiving station, and the second adsorption conveying part is docked with the second end of the intermediate adsorption conveying part; the first adsorption conveying part is configured to absorb the sheet from the material box at the first loading station, and to convey the sheet toward the first end of the intermediate adsorption conveying part, and the intermediate adsorption conveying part is configured to receive the sheet output by the first adsorption conveying part, and to release the sheet after conveying the sheet to the top of the receiving station; the second adsorption conveying part is configured to absorb the sheet from the material box at the second loading station, and to convey the sheet toward the second end of the intermediate adsorption conveying part, and the intermediate adsorption conveying part is configured to receive the sheet output by the second adsorption conveying part, and to release the sheet after conveying the sheet to the top of the receiving station.

[0014] A loading mechanism with a simple structure and fast loading speed is provided, which can suck the sheet from the material box at the loading station on one side of the sheet conveying line through either the first adsorption conveying part or the second adsorption conveying part, and convey the sheet to the intermediate adsorption conveying part. The intermediate adsorption conveying part then conveys the sheet and releases it to the receiving station.

[0015] In some embodiments, the structure of the second cassette-changing conveying mechanism is the same as that of the first cassette-changing conveying mechanism. The first cassette-changing conveying mechanism includes a lifting part, an empty cassette conveying line, and a full cassette conveying line, where: the empty cassette conveying line and the full cassette conveying line are arranged side by side vertically on the movable part of the lifting part. The lifting part is configured to drive the empty cassette conveying line and the full cassette conveying line to lift synchronously, so that one of the empty cassette conveying line and the full cassette conveying line is docked with the first cassette conveying line; when the empty cassette conveying line is docked with the first cassette conveying line, the empty cassette conveying line is configured to receive the emptied cassette output by the first cassette conveying line; when the full cassette conveying line is docked with the first cassette conveying line, the full cassette conveying line is configured to convey the cassette filled with sheets to the first cassette conveying line.

[0016] After the cassette on the first cassette conveying line is emptied, the lifting part controls the empty cassette conveying line to be docked with the first cassette conveying line, and the first cassette conveying line conveys the emptied cassette to the empty cassette conveying line. Then the lifting part drives the full cassette conveying line to be docked with the first cassette conveying line to supplement the cassette filled with sheets to the first cassette conveying line, thereby further improving the cassette-changing effect.

[0017] In some embodiments, the lifting part includes a frame, a motor, a lead screw, a nut, and a mounting bracket, where: the lead screw is arranged vertically on the frame, the lead screw is connected to the driving end of the motor arranged on the frame, and the nut is screwed on the lead screw; the mounting bracket is connected to the frame in a liftable and slidable manner and is fixedly connected to the nut; the empty cassette conveying line and the full cassette conveying line are arranged side by side vertically on the mounting bracket.

[0018] A lifting part with a simple structure and stable driving is provided. It drives the mounting bracket to lift through a lead screw driving module composed of a motor, a lead screw, and a nut, thereby driving the empty cassette conveying line and the full cassette conveying line arranged side by side vertically on the mounting bracket to lift synchronously.

[0019] In some embodiments, there are two or three receiving stations on the conveying path of the sheet conveying line.

[0020] By setting two or three receiving stations on the conveying path of the sheet conveying line, the sheet loading efficiency can be further improved.

[0021] In some embodiments, the sheet conveying line includes a first sheet conveying section and a second sheet conveying section arranged after the first sheet conveying section. The first sheet conveying section and the second sheet conveying section are configured to convey independently; the receiving station is arranged on the conveying path of the first sheet conveying section, and the first sheet conveying section conveys the received sheets to the second sheet conveying section.

[0022] By setting the sheet conveying line to include a first sheet conveying section and a second sheet conveying section, and arranging the receiving station on the conveying path of the first sheet conveying section, the first sheet conveying section switches to a stationary state when receiving the sheet. After the sheet falls onto the receiving station, the first sheet conveying section then conveys the sheet towards the second sheet conveying section. The second sheet conveying section always maintains a relatively high conveying speed. With such an arrangement, the sheet conveying line can not only stably receive the sheet but also ensure the overall conveying speed of the sheet.

[0023] In some embodiments, the first sheet conveying section is configured to be capable of accelerating conveyance, and the second sheet conveying section is configured to convey at a constant speed.

[0024] When the feeding mechanism places the sheet onto the first sheet conveying section, the first sheet conveying section switches to a stationary state to ensure that the sheet smoothly falls onto the first sheet conveying section. Subsequently, the first sheet conveying section starts to accelerate conveyance until the conveying speed is close to or the same as that of the second sheet conveying section, so that the sheet on the first sheet conveying section can be smoothly transferred onto the second sheet conveying section.

[0025] In some embodiments, a jacking hole is provided at the bottom of the magazine, and a jacking mechanism is provided at both the first feeding station and the second feeding station; the jacking mechanism is configured to jack up the sheets in the magazine through the jacking hole so that the topmost sheet in the magazine is at a predetermined sheet-taking height.

[0026] By the jacking mechanism jacking up the sheets in the magazine, the feeding mechanism can pick up the sheets from the same sheet-taking height each time.

[0027] In some embodiments, the sheet feeding device further includes an AGV cart, which is used to load the magazine filled with sheets onto the first magazine-changing conveying mechanism and the second magazine-changing conveying mechanism, and receive the emptied magazines output by the first magazine-changing conveying mechanism and the second magazine-changing conveying mechanism.

[0028] By providing the AGV cart, the replenishment of full magazines for the first magazine-changing conveying mechanism and the second magazine-changing conveying mechanism is realized, as well as the recycling and transfer of the emptied magazines output by the first magazine-changing conveying mechanism and the second magazine-changing conveying mechanism.

[0029] In some embodiments, the AGV cart includes a first conveying channel and a second conveying channel. Among them, the first conveying channel is configured to be docked with the first magazine-changing conveying mechanism and the second magazine-changing conveying mechanism to receive the emptied magazines output by the first magazine-changing conveying mechanism and the second magazine-changing conveying mechanism; the second conveying channel is configured to be docked with the first magazine-changing conveying mechanism and the second magazine-changing conveying mechanism to load the magazine filled with sheets onto the first magazine-changing conveying mechanism and the second magazine-changing conveying mechanism.

[0030] The AGV cart includes a first conveying channel and a second conveying channel. When the first conveying channel feeds a cartridge filled with sheets onto the first cartridge changing and conveying mechanism and the second cartridge changing and conveying mechanism, the second conveying channel synchronously receives the emptied cartridges output by the first cartridge changing and conveying mechanism and the second cartridge changing and conveying mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 FIG. is a schematic structural view of the sheet loading device in an embodiment of the present application from one perspective;

[0032] Figure 2 FIG. is a schematic structural view of the sheet loading device in an embodiment of the present application from another perspective;

[0033] Figure 3 FIG. is a schematic structural view of the first cartridge changing and conveying mechanism and the second cartridge changing and conveying mechanism in an embodiment of the present application;

[0034] Figure 4 FIG. is a schematic structural view of the loading mechanism in an embodiment of the present application;

[0035] Figure 5 FIG. is a schematic structural view of the cartridge in an embodiment of the present application.

[0036] Figures 1 to 5 It includes:

[0037] Sheet conveying line 1;

[0038] First cartridge conveying line 2;

[0039] Second cartridge conveying line 3;

[0040] First cartridge changing and conveying mechanism 4: lifting part 41, empty cartridge conveying line 42, full cartridge conveying line 43, frame 411, motor 412, lead screw 413, nut 414 and mounting bracket 415;

[0041] Second cartridge changing and conveying mechanism 5;

[0042] Loading mechanism 6: adsorption and conveying part 61, first adsorption and conveying part 62, second adsorption and conveying part 63;

[0043] Lifting mechanism 7;

[0044] Cartridge 100, pallet 101. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0045] To make the above objects, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] As Figures 1 to 2As shown in the figure, the sheet feeding device in the embodiment of the present application includes a sheet conveying line 1, a first cassette conveying line 2, a second cassette conveying line 3, a first cassette changing conveying mechanism 4, a second cassette changing conveying mechanism 5, and at least one feeding mechanism 6, where:

[0047] The sheet conveying line 1 is configured to convey sheets, and there are at least one receiving station on the conveying path of the sheet conveying line 1.

[0048] The first cassette conveying line 2 is arranged side by side on the first side (such as the left side) of the sheet conveying line 1. The first cassette conveying line 1 is configured to convey the cassette 100, and there are first feeding stations on the conveying path of the first cassette conveying line 1 that correspond one-to-one with the receiving stations.

[0049] The second cassette conveying line 3 is arranged side by side on the second side (such as the right side) of the sheet conveying line 1. The second cassette conveying line 3 is configured to convey the cassette 100, and there are second feeding stations on the conveying path of the second cassette conveying line 3 that correspond one-to-one with the receiving stations.

[0050] One feeding mechanism 6 is correspondingly arranged at each receiving station. The feeding mechanism 6 is configured to pick up sheets from the cassette 100 at the first feeding station or the second feeding station corresponding to the receiving station, and feed the picked-up sheets to the receiving station.

[0051] The first cassette changing conveying mechanism 4 is docked with the first cassette conveying line 2. The first cassette changing conveying mechanism 4 is configured to convey the cassette filled with sheets to the first cassette conveying line 2, and receive the emptied cassette output by the first cassette conveying line 2.

[0052] The second cassette changing conveying mechanism 5 is docked with the second cassette conveying line 3. The second cassette changing conveying mechanism 5 is configured to convey the cassette filled with sheets to the second cassette conveying line 2, and receive the emptied cassette output by the second cassette conveying line 2.

[0053] In the sheet feeding device in the embodiment of the present application, the first cassette conveying line 2 and the first cassette changing conveying mechanism 4 cooperate with each other to realize the automatic cassette changing operation of the cassette 100 located on the first side of the sheet conveying line 1. Specifically, when the sheets in the cassette 100 at the first feeding station are emptied by the feeding mechanism 6, the first cassette conveying line 2 conveys the emptied cassette 100 towards the first cassette changing conveying mechanism 4 until the emptied cassette 100 enters the first cassette changing conveying mechanism 4. Subsequently, the first cassette changing conveying mechanism 4 conveys the cassette 100 filled with silicon wafers to the first cassette conveying line 2, and finally the first cassette conveying line 2 conveys the cassette 100 filled with silicon wafers to the first feeding station again.

[0054] Similarly, the second cartridge conveyor line 3 and the second cartridge changing conveyor mechanism 5 cooperate with each other to realize the automatic cartridge changing operation of the cartridge 100 located on the second side of the sheet conveyor line 1. Specifically, when the sheets in the cartridge 100 at the second loading station are emptied by the loading mechanism 6, the second cartridge conveyor line 3 conveys the emptied cartridge 100 towards the second cartridge changing conveyor mechanism 5 until the emptied cartridge enters the second cartridge changing conveyor mechanism 5. Subsequently, the second cartridge changing conveyor mechanism 5 conveys the cartridge filled with silicon wafers onto the second cartridge conveyor line 3, and finally the second cartridge conveyor line 3 conveys the cartridge filled with silicon wafers to the second loading station again.

[0055] The sheet loading device of the embodiment of the present application realizes automatic cartridge changing, improves the cartridge changing efficiency, and ultimately improves the loading efficiency of the sheet conveyor line 1 for the subsequent process stations.

[0056] In addition, since loading stations are provided on both sides of the sheet conveyor line 1, when the cartridge 100 on one side is emptied and the cartridge changing operation is carried out, the loading mechanism 6 can pick up sheets from the cartridge 100 on the other side, thereby avoiding loading waiting and further improving the loading efficiency of the sheet conveyor line 1.

[0057] The sheet loading device of the embodiment of the present application is suitable for loading sheet products such as silicon wafers.

[0058] Optionally, there are two or three receiving stations on the conveying path of the sheet conveyor line 1. For example Figure 1 and Figure 2 In the embodiment, there are two receiving stations on the conveying path of the sheet conveyor line 1, and a loading mechanism 6 is correspondingly arranged at each of the two receiving stations.

[0059] By arranging two or three receiving stations on the conveying path of the sheet conveyor line 1, the sheet loading efficiency can be further improved.

[0060] As Figure 4 shown, optionally, the loading mechanism 6 includes an intermediate adsorption conveying part 61, a first adsorption conveying part 62 and a second adsorption conveying part 63, wherein: the intermediate adsorption conveying part 61 is located above the receiving station. The first adsorption conveying part 62 is located above the first loading station corresponding to the receiving station, and the first adsorption conveying part 62 is docked with the first end of the intermediate adsorption conveying part 61. The second adsorption conveying part 63 is located above the second loading station corresponding to the receiving station, and the second adsorption conveying part 63 is docked with the second end of the intermediate adsorption conveying part 61.

[0061] The first adsorption and conveying unit 62 is configured to suck the sheet from the cassette 100 at the first loading station and convey the sheet toward the first end of the middle adsorption and conveying unit 61. The middle adsorption and conveying unit 61 is configured to receive the sheet output by the first adsorption and conveying unit 62, convey the sheet to directly above the receiving station, and then release the sheet so that the sheet falls to the receiving station. Similarly, the second adsorption and conveying unit 63 is configured to suck the sheet from the cassette 100 at the second loading station and convey the sheet toward the second end of the middle adsorption and conveying unit 61. The middle adsorption and conveying unit 61 is configured to receive the sheet output by the second adsorption and conveying unit 63, convey the sheet to directly above the receiving station, and then release the sheet so that the sheet falls to the receiving station.

[0062] Optionally, the middle adsorption and conveying unit 61 includes a first mounting bracket, a first adsorption unit, and at least two first conveyor belts, where: the at least two first conveyor belts are arranged in parallel on the first mounting bracket, and the lower conveying surfaces of each first conveyor belt are located in the same plane. The first conveyor belt is configured to be able to convey in both directions. The first adsorption unit is arranged on the first mounting bracket and is configured to adsorb the sheet output by the first adsorption and conveying unit 62 or the second adsorption and conveying unit 63 onto the lower conveying surface of the first conveyor belt. The first conveyor belt is configured to convey the sheet to directly above the receiving station and then release the sheet. The first adsorption unit can, for example, adopt a Bernoulli suction cup.

[0063] Optionally, the first adsorption and conveying unit 62 includes a second mounting bracket, a second adsorption unit, and at least two second conveyor belts, where: the at least two second conveyor belts are arranged in parallel on the second mounting bracket, and the lower conveying surfaces of each second conveyor belt are located in the same plane. The second adsorption unit is arranged on the second mounting bracket and is configured to suck upward the sheet in the cassette at the first loading station so that the sheet is adsorbed on the lower conveying surface of the second conveyor belt. The second conveyor belt is configured to convey the sheet upward toward the first end of the middle adsorption and conveying unit 61. The second adsorption unit can, for example, adopt a Bernoulli suction cup.

[0064] Optionally, the third adsorption and conveying unit 63 includes a third mounting bracket, a third adsorption unit, and at least two third conveyor belts, where: the at least two third conveyor belts are arranged in parallel on the third mounting bracket, and the lower conveying surfaces of each third conveyor belt are located in the same plane. The third adsorption unit is arranged on the third mounting bracket and is configured to suck upward the sheet in the cassette at the second loading station so that the sheet is adsorbed on the lower conveying surface of the third conveyor belt. The third conveyor belt is configured to convey the sheet upward toward the second end of the middle adsorption and conveying unit 61. The third adsorption unit can, for example, adopt a Bernoulli suction cup.

[0065] Optionally, the structure of the second cassette changing and conveying mechanism 5 is the same as that of the first cassette changing and conveying mechanism 4. Taking the first cassette changing and conveying mechanism 4 as an example, asFigure 2 As shown in the figure, it includes a lifting part 41, an empty cassette conveyor line 42 and a full cassette conveyor line 43, where: the empty cassette conveyor line 42 and the full cassette conveyor line 43 are arranged side by side vertically on the movable part of the lifting part 41, and the lifting part 41 is configured to drive the empty cassette conveyor line 42 and the full cassette conveyor line 43 to lift synchronously, so that one of the empty cassette conveyor line 42 and the full cassette conveyor line 43 is docked with the first cassette conveyor line 2. When the empty cassette conveyor line 42 is docked with the first cassette conveyor line 2, the empty cassette conveyor line 42 is configured to receive the emptied cassette output by the first cassette conveyor line 2. When the full cassette conveyor line 43 is docked with the first cassette conveyor line 2, the full cassette conveyor line 43 is configured to convey the cassette filled with sheets to the first cassette conveyor line 2.

[0066] Since the first cassette changing conveyor mechanism 2 is provided with an empty cassette conveyor line 42 and a full cassette conveyor line 43 with opposite conveying directions, and the empty cassette conveyor line 42 and the full cassette conveyor line 43 can be alternately docked with the first cassette conveyor line. When the cassette on the first cassette conveyor line 2 is emptied, the lifting part 41 controls the empty cassette conveyor line 42 to be docked with the first cassette conveyor line 2, and the first cassette conveyor line 2 conveys the emptied cassette to the empty cassette conveyor line 42. Subsequently, the lifting part 41 drives the full cassette conveyor line 43 to be docked with the first cassette conveyor line 2, and the full cassette conveyor line 43 replenishes the cassette filled with sheets to the first cassette conveyor line 41, thereby further improving the cassette changing effect.

[0067] As Figure 3 shown, optionally, the lifting part 41 includes a frame 411, a motor 412, a lead screw 413, a nut 414 and a mounting bracket 415, where: the lead screw 413 is arranged vertically on the frame 411, the lead screw 413 is connected to the driving end of the motor 412 arranged on the frame 411, and the nut 414 is screwed on the lead screw 413. The mounting bracket 415 is connected to the frame 411 in a liftable and slidable manner and is fixedly connected to the nut 414. The empty cassette conveyor line 42 and the full cassette conveyor line 43 are arranged side by side vertically on the mounting bracket 415.

[0068] The lead screw driving module composed of the motor 412, the lead screw 413 and the nut 414 can drive the mounting bracket 415 to lift stably, so as to drive the empty cassette conveyor line 42 and the full cassette conveyor line 43 arranged side by side vertically on the mounting bracket 415 to lift synchronously.

[0069] In order to ensure that the sheets can fall smoothly to the receiving station, the sheet conveyor line 1 needs to switch to the stationary state when receiving the sheets. And in order to ensure the loading efficiency of the sheet conveyor line 1, the sheet conveyor line 1 needs to convey the sheets at a relatively fast conveying speed.

[0070] As Figure 1As shown, optionally, the sheet conveying line 1 includes a first sheet conveying section 11 and a second sheet conveying section 12 arranged after the first sheet conveying section 11. The first sheet conveying section 11 and the second sheet conveying section 12 are configured to convey independently. Among them, the receiving station is arranged on the conveying path of the first sheet conveying section 11, and the first sheet conveying section 11 conveys the received sheet onto the second sheet conveying section 12.

[0071] By setting the sheet conveying line 1 to include the first sheet conveying section 11 and the second sheet conveying section 12, and arranging the receiving station on the conveying path of the first sheet conveying section 11, the first sheet conveying section 11 switches to a stationary state when receiving the sheet. After the sheet falls onto the receiving station, the first sheet conveying section 11 conveys the sheet towards the second sheet conveying section 12 again. The second sheet conveying section 12 always maintains a relatively high conveying speed. With such a setting, the sheet conveying line 1 can not only stably receive the sheet but also ensure the overall conveying speed of the sheet.

[0072] Optionally, the first sheet conveying section 11 is configured to be capable of accelerating conveyance, and the second sheet conveying section 12 is configured to convey at a constant speed. When the feeding mechanism 6 releases the sheet onto the first sheet conveying section, the first sheet conveying section 11 switches to a stationary state to ensure that the sheet falls smoothly onto the first sheet conveying section 11. Subsequently, the first sheet conveying section 11 starts to accelerate conveyance until the conveying speed is close to or the same as the conveying speed of the second sheet conveying section 12, so that the sheet on the first sheet conveying section 11 is smoothly transferred onto the second sheet conveying section 12.

[0073] As Figure 5 shown, optionally, the bottom of the magazine 100 is provided with a jacking hole, and the jacking hole is covered with a pallet 101. The sheets are stacked on the pallet 101. Lifting mechanisms 7 are arranged at both the first feeding station and the second feeding station. The lifting mechanisms 7 are configured to jack up the sheets in the magazine 100 through the jacking holes so that the topmost sheet in the magazine 100 is at a predetermined sheet-taking height. In this way, the feeding mechanism 6 can pick up the sheets from the same sheet-taking height each time to ensure that the feeding mechanism 6 can successfully pick up the sheets.

[0074] Optionally, the sheet feeding device in the embodiment of the present application further includes an AGV cart. The AGV cart is used to load the magazine filled with sheets onto the first magazine-changing conveying mechanism 4 and the second magazine-changing conveying mechanism 5 to replenish the first magazine-changing conveying mechanism 4 and the second magazine-changing conveying mechanism 5. The AGV cart is also used to receive the emptied magazines output by the first magazine-changing conveying mechanism 4 and the second magazine-changing conveying mechanism 5 to recycle and transfer the emptied magazines, for example, transferring the emptied magazines to the sheet receiving station to receive the sheets.

[0075] Optionally, the AGV cart includes a first conveying channel and a second conveying channel, and the conveying directions of the first conveying channel and the second conveying channel are opposite. Among them, the first conveying channel is configured to be docked with the first cassette-changing conveying mechanism 4 and the second cassette-changing conveying mechanism 5 to receive the emptied cassettes output by the first cassette-changing conveying mechanism 4 and the second cassette-changing conveying mechanism 6. The second conveying channel is configured to be docked with the first cassette-changing conveying mechanism 4 and the second cassette-changing conveying mechanism to load the cassettes filled with sheets onto the first cassette-changing conveying mechanism 4 and the second cassette-changing conveying mechanism 5.

[0076] For the case where the empty cassette conveying line 42 and the full cassette conveying line 43 of the first cassette-changing conveying mechanism 4 and the second cassette-changing conveying mechanism 5 in the foregoing embodiments are arranged side by side vertically. Optionally, the AGV cart includes a first conveying channel and a second conveying channel arranged side by side vertically. When the AGV cart travels to be docked with the first cassette-changing conveying mechanism 4, the first conveying channel and the second conveying channel are respectively docked with the empty cassette conveying line 42 and the full cassette conveying line 43 of the first cassette-changing conveying mechanism 4. Among them, the first conveying channel receives the emptied cassettes output by the empty cassette conveying line 42 of the first cassette-changing conveying mechanism 4. At the same time, the second conveying channel loads the cassettes filled with sheets onto the full cassette conveying line 43 of the first cassette-changing conveying mechanism 4.

[0077] Similarly, when the AGV cart travels to be docked with the second cassette-changing conveying mechanism 5, the first conveying channel and the second conveying channel are respectively docked with the empty cassette conveying line 42 and the full cassette conveying line 43 of the second cassette-changing conveying mechanism 5. Among them, the first conveying channel receives the emptied cassettes output by the empty cassette conveying line 42 of the second cassette-changing conveying mechanism 5. At the same time, the second conveying channel loads the cassettes filled with sheets onto the full cassette conveying line 43 of the second cassette-changing conveying mechanism 5.

[0078] Optionally, the AGV cart includes two first conveying channels and two second conveying channels, and the AGV cart can be docked with the first cassette-changing conveying mechanism 4 and the second cassette-changing conveying mechanism 5 at the same time. Among them, the two first conveying channels are respectively docked with the empty cassette conveying lines 42 of the first cassette-changing conveying mechanism 4 and the second cassette-changing conveying mechanism 5 to respectively receive the emptied cassettes output by the empty cassette conveying lines 42 of the first cassette-changing conveying mechanism 4 and the second cassette-changing conveying mechanism 5. The two second conveying channels are respectively docked with the full cassette conveying lines 43 of the first cassette-changing conveying mechanism 4 and the second cassette-changing conveying mechanism 5 to respectively load the cassettes filled with sheets onto the full cassette conveying lines 43 of the first cassette-changing conveying mechanism 4 and the second cassette-changing conveying mechanism 5.

[0079] The above has described the present application in sufficient detail with a certain degree of particularity. Those of ordinary skill in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the protection scope of the present application. The scope to be protected by the present application is defined by the claims described, rather than by the above descriptions in the embodiments.

Claims

1. A sheet feeding device, characterized in that, The sheet feeding device includes a sheet conveying line, a first cassette conveying line, a second cassette conveying line, a first cassette changing conveying mechanism, a second cassette changing conveying mechanism, and at least one feeding mechanism, wherein: The sheet conveying line is configured to convey sheets, and at least one receiving station is provided on the conveying path of the sheet conveying line; The first cassette conveying line is arranged side by side on the first side of the sheet conveying line, and the first cassette conveying line is configured to convey cassettes. A first feeding station corresponding to the receiving station one by one is provided on the conveying path of the first cassette conveying line; The second cassette conveying line is arranged side by side on the second side of the sheet conveying line, and the second cassette conveying line is configured to convey cassettes. A second feeding station corresponding to the receiving station one by one is provided on the conveying path of the second cassette conveying line; One feeding mechanism is correspondingly arranged at each receiving station. The feeding mechanism is configured to pick up sheets from the cassette at the first feeding station or the second feeding station corresponding to the receiving station, and feed the picked-up sheets to the receiving station; The first cassette changing conveying mechanism is docked with the first cassette conveying line, and the first cassette changing conveying mechanism is configured to convey the cassette filled with sheets to the first cassette conveying line, and receive the emptied cassette output by the first cassette conveying line; The second cassette changing conveying mechanism is docked with the second cassette conveying line, and the second cassette changing conveying mechanism is configured to convey the cassette filled with sheets to the second cassette conveying line, and receive the emptied cassette output by the second cassette conveying line.

2. The sheet loading device according to claim 1, wherein, The feeding mechanism includes an intermediate adsorption conveying part, a first adsorption conveying part and a second adsorption conveying part, wherein: The intermediate adsorption conveying part is located above the receiving station; The first adsorption conveying part is located above the first feeding station corresponding to the receiving station, and the first adsorption conveying part is docked with the first end of the intermediate adsorption conveying part; The second adsorption conveying part is located above the second feeding station corresponding to the receiving station, and the second adsorption conveying part is docked with the second end of the intermediate adsorption conveying part; The first adsorption conveying part is configured to suck the sheets from the cassette at the first feeding station, and convey the sheets towards the first end of the intermediate adsorption conveying part. The intermediate adsorption conveying part is configured to receive the sheets output by the first adsorption conveying part, and convey the sheets to directly above the receiving station and then release the sheets; The second adsorption conveying part is configured to suck the sheets from the cassette at the second feeding station, and convey the sheets towards the second end of the intermediate adsorption conveying part. The intermediate adsorption conveying part is configured to receive the sheets output by the second adsorption conveying part, and convey the sheets to directly above the receiving station and then release the sheets.

3. The sheet feeding device according to claim 1, characterized in that, The second cassette changing conveying mechanism has the same structure as the first cassette changing conveying mechanism. The first cassette changing conveying mechanism includes a lifting part, an empty cassette conveying line and a full cassette conveying line, wherein: The empty cartridge conveyor line and the full cartridge conveyor line are arranged side by side vertically on the moving part of the lifting part, and the lifting part is configured to drive the empty cartridge conveyor line and the full cartridge conveyor line to lift synchronously, so that one of the empty cartridge conveyor line and the full cartridge conveyor line is docked with the first cartridge conveyor line; When the empty cartridge conveyor line is docked with the first cartridge conveyor line, the empty cartridge conveyor line is configured to receive the emptied cartridges output by the first cartridge conveyor line; When the full cartridge conveyor line is docked with the first cartridge conveyor line, the full cartridge conveyor line is configured to convey the cartridges filled with sheets to the first cartridge conveyor line.

4. The sheet feeding device according to claim 3, wherein, The lifting part includes a frame, a motor, a lead screw, a nut and a mounting frame, wherein: The lead screw is arranged vertically on the frame, the lead screw is connected to the driving end of the motor arranged on the frame, and the nut is screwed on the lead screw; The mounting frame is connected to the frame in a liftable and slidable manner and is fixedly connected to the nut; The empty cartridge conveyor line and the full cartridge conveyor line are arranged side by side vertically on the mounting frame.

5. The sheet loading device according to claim 1, characterized in that, There are two or three of the receiving stations on the conveying path of the sheet conveyor line.

6. The sheet loading device according to claim 1, characterized in that, The sheet conveyor line includes a first sheet conveying section and a second sheet conveying section arranged at the back of the first sheet conveying section, and the first sheet conveying section and the second sheet conveying section are configured to be independently conveyed; The receiving station is arranged on the conveying path of the first sheet conveying section, and the first sheet conveying section conveys the received sheets to the second sheet conveying section.

7. The sheet loading device according to claim 6, wherein, The first sheet conveying section is configured to be capable of accelerating conveyance, and the second sheet conveying section is configured to be conveyed at a constant speed.

8. The sheet loading device according to claim 1, characterized in that The bottom of the cartridge is provided with a jacking hole, and a jacking mechanism is arranged at both the first loading station and the second loading station; The jacking mechanism is configured to jack up the sheets in the cartridge upward through the jacking hole, so as to jack up the sheets in the cartridge to a predetermined sheet taking height at the topmost sheet.

9. The sheet loading device according to claim 1, wherein, The sheet loading device further includes an AGV cart, and the AGV cart is used for loading the cartridges filled with sheets onto the first cartridge changing conveyor mechanism and the second cartridge changing conveyor mechanism, and receiving the emptied cartridges output by the first cartridge changing conveyor mechanism and the second cartridge changing conveyor mechanism.

10. The sheet loading device according to claim 9, wherein, The AGV cart includes a first conveying channel and a second conveying channel. Among them, the first conveying channel is configured to be docked with the first cartridge changing conveyor mechanism and the second cartridge changing conveyor mechanism to receive the emptied cartridges output by the first cartridge changing conveyor mechanism and the second cartridge changing conveyor mechanism; the second conveying channel is configured to be docked with the first cartridge changing conveyor mechanism and the second cartridge changing conveyor mechanism to load the cartridges filled with sheets onto the first cartridge changing conveyor mechanism and the second cartridge changing conveyor mechanism.

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