Sheet body feeding device, sorting machine, screen printing machine and laser processor

Abstract

The invention discloses a sheet body feeding device, a sorting machine, a screen printing machine and a laser processor, the sheet body feeding device comprises a first conveying mechanism, a second conveying mechanism and a reversing mechanism, the first conveying mechanism and the second conveying mechanism are arranged side by side, and the first conveying mechanism and the second conveying mechanism are configured to convey sheet bodies in the first direction; the reversing mechanism is located above the first conveying mechanism and the second conveying mechanism, the reversing mechanism extends in the second direction to cover the first conveying mechanism and the second conveying mechanism, the second direction is perpendicular to the first direction, and the reversing mechanism is configured to obtain sheet bodies conveyed by the first conveying mechanism and / or the second conveying mechanism to the position below the reversing mechanism; and the obtained sheet bodies are conveyed to a confluence position in the second direction, the obtained sheet bodies are released to a confluence conveying unit at the confluence position, and the confluence conveying unit is configured to convey the sheet bodies to a next station. According to the sheet body feeding device, continuous feeding can be achieved, and the feeding efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of sheet feeding, and in particular relates to a sheet feeding device, a sorting machine, a screen printing machine and a laser processing machine. Background Art

[0002] In the production process of photovoltaic cells, the silicon wafers or battery cells stored in the storage unit need to be taken out one by one by a loading device and released to a conveying mechanism, which then transports the silicon wafers or battery cells to the subsequent processing stations.

[0003] Most conventional loading devices include a driving device and two horizontal conveying mechanisms. A loading unit is set at the sheet picking end of each horizontal conveying mechanism. The loading unit is used to provide sheets to the corresponding horizontal conveying mechanism. In order to achieve uninterrupted loading, the driving device drives the two horizontal conveying mechanisms to move back and forth horizontally along the horizontal guide rail to connect the corresponding horizontal conveying mechanism with the downstream workstation for loading. While one of the two loading units is loading, the other loading unit switches between empty and full storage units.

[0004] However, in the specific application process, this feeding method has the disadvantage of low feeding efficiency because it needs to intermittently shift and switch the horizontal conveying mechanism, and cannot meet the current fast-paced and high-capacity production requirements. Summary of the invention

[0005] The purpose of the present application is to provide a sheet feeding device to solve the problem of low feeding efficiency of sheet feeding devices in the prior art. In addition, the present application also provides a sorting machine, a screen printing machine and a laser processing machine including the sheet feeding device.

[0006] To achieve this goal, this application adopts the following technical solutions:

[0007] In a first aspect, the present application proposes a sheet feeding device, which includes a first conveying mechanism, a second conveying mechanism and a reversing mechanism, wherein:

[0008] The first conveying mechanism and the second conveying mechanism are arranged side by side, and the first conveying mechanism and the second conveying mechanism are configured to convey the sheet along the first direction; the reversing mechanism is located above the first conveying mechanism and the second conveying mechanism, and the reversing mechanism extends along the second direction to cover the first conveying mechanism and the second conveying mechanism, and the second direction is perpendicular to the first direction. The reversing mechanism is configured to obtain the sheet conveyed by the first conveying mechanism and / or the second conveying mechanism to the bottom of the reversing mechanism, convey the obtained sheet along the second direction to the confluence position, and release the obtained sheet to the confluence conveying unit at the confluence position, and the confluence conveying unit is configured to convey the sheet to the subsequent workstation.

[0009] By arranging a reversing mechanism above the first conveying mechanism and the second conveying mechanism, the reversing mechanism converges the sheets conveyed by the first conveying mechanism and the second conveying mechanism and conveys them to a convergence conveying unit, which then provides the sheets to the subsequent workstations. While achieving uninterrupted loading, there is no need for the intermittent reciprocating translation of the horizontal conveying mechanism in the prior art, which can greatly improve the loading efficiency and meet the production requirements of fast pace and high capacity.

[0010] Optionally, the confluence conveying unit is the first conveying mechanism.

[0011] By using the first conveying mechanism as a converging conveying unit, the reversing mechanism does not need to reverse the direction of the sheet conveyed by the first conveying mechanism. The first conveying mechanism can always convey the sheet along the first direction. The reversing mechanism only needs to reverse the direction of the sheet conveyed by the second conveying mechanism and converge it onto the first conveying mechanism to achieve the converging of the first conveying mechanism and the second conveying mechanism. Instead of setting up a separate converging conveying unit, the first conveying mechanism is directly used as the converging conveying unit, which has low cost and simple and compact structure.

[0012] Optionally, the convergence conveying unit is arranged colinearly with the first conveying mechanism, the input end of the convergence conveying unit is located below the reversing mechanism and docked with the output end of the first conveying mechanism, the conveying surface of the convergence conveying unit is coplanar with the conveying surface of the first conveying mechanism, and the convergence conveying unit is configured to convey the sheet from the first conveying mechanism along the first direction and / or convey the sheet released by the reversing mechanism along the first direction.

[0013] By arranging a converging conveying unit co-linear with the first conveying mechanism at the output end thereof, in addition to the advantage that the reversing mechanism does not need to reverse the sheet conveyed by the first conveying mechanism, the conveying speeds of the first conveying mechanism and the converging conveying unit can also be independently controlled, and the conveying speed of the sheet conveyed by the converging conveying unit to the subsequent workstation can be more flexibly controlled to meet the needs of different application scenarios.

[0014] Optionally, the converging conveying unit is extended along the first direction and arranged between the first conveying mechanism and the second conveying mechanism, the input end of the converging conveying unit is located below the reversing mechanism, and the converging conveying unit is configured to convey the sheets released by the reversing mechanism along the first direction.

[0015] By arranging the converging conveying unit between the first conveying mechanism and the second conveying mechanism, the conveying speed between the converging conveying unit and the first conveying mechanism and the conveying speed between the converging conveying unit and the second conveying mechanism can be independently controlled, and the control of the loading speed is more flexible.

[0016] Optionally, the sheet loading device further includes a first storage unit and a second storage unit, which are respectively arranged at the input end of the first conveying mechanism and the input end of the second conveying mechanism, and the first storage unit and the second storage unit both include at least one flower basket or material box.

[0017] By arranging storage units at the input ends of the first conveying mechanism and the second conveying mechanism, materials are supplied to the first conveying mechanism and the second conveying mechanism, thereby ensuring stable loading of the sheet feeding device.

[0018] Optionally, the sheet feeding device includes at least two second conveying mechanisms, and the at least two second conveying mechanisms are located on the same side or both sides of the first conveying mechanism.

[0019] By providing at least two second conveying mechanisms, the reversing mechanism merges the sheets on the first conveying mechanism and the at least two second conveying mechanisms into a converging conveying unit and then conveys them to the subsequent workstation, thereby further improving the loading efficiency.

[0020] Optionally, the reversing mechanism includes a first reversing unit and a second reversing unit spaced apart along the first direction, the first reversing unit extends along the second direction to cover the first conveying mechanism and the at least one second conveying mechanism, the first reversing unit is configured to obtain the sheet conveyed by the first conveying mechanism and / or the at least one second conveying mechanism to the bottom of the first reversing unit, and convey the obtained sheet to the first confluence position along the second direction;

[0021] The second reversing unit extends along the second direction to cover the first conveying mechanism and the remaining second conveying mechanisms, and the second reversing unit is configured to obtain the sheet conveyed by the first conveying mechanism and / or the remaining second conveying mechanisms to the bottom of the second reversing unit, and convey the obtained sheet to the second confluence position along the second direction;

[0022] The first confluence position and the second confluence position are located at two different positions of the confluence transport unit along the first direction.

[0023] By setting two confluence positions, the first confluence position and the second confluence position, with the cooperation of the first reversing unit and the second reversing unit, the first confluence position and the second confluence position can simultaneously receive the confluenced sheets, and can also alternately receive the confluenced sheets, thereby improving the flexibility of loading and having higher loading compatibility.

[0024] Optionally, the reversing mechanism includes a third reversing unit and a fourth reversing unit spaced apart along the first direction, the third reversing unit extends along the second direction to cover the confluence conveying unit, the first conveying mechanism and at least one second conveying mechanism, and the third reversing unit is configured to obtain the sheet conveyed by the first conveying mechanism and / or the at least one second conveying mechanism to the bottom of the third reversing unit, and convey the obtained sheet to the third confluence position along the second direction;

[0025] The fourth reversing unit extends along the second direction to cover the converging conveying unit and the remaining second conveying mechanisms, and the fourth reversing unit is configured to obtain the sheet conveyed by the remaining second conveying mechanisms to the bottom of the fourth reversing unit, and convey the obtained sheet to the fourth converging position along the second direction;

[0026] The third confluence position and the fourth confluence position are located at two different positions of the confluence transport unit along the first direction.

[0027] By setting two confluence positions, the third confluence position and the fourth confluence position, with the cooperation of the third reversing unit and the fourth reversing unit, the third confluence position and the fourth confluence position can simultaneously receive the confluenced sheets, and can also alternately receive the confluenced sheets, thereby improving the flexibility of loading and having higher loading compatibility.

[0028] Optionally, the sheet loading device includes at least two reversing mechanisms, at least two reversing mechanisms are arranged at intervals along a first direction, and a confluence conveying unit is provided with at least two confluence positions along the first direction, each confluence position corresponds to a reversing mechanism, and at least two reversing mechanisms are configured to synchronously acquire at least two sheets conveyed by the first conveying mechanism or the second conveying mechanism to the bottom of the corresponding reversing mechanism, and synchronously convey the acquired at least two sheets along the second direction to the corresponding confluence position, and release the acquired at least two sheets to the confluence conveying unit at the confluence position.

[0029] By setting at least two converging positions on the converging conveying unit, with the cooperation of at least two reversing mechanisms, at least two sheets on the first conveying mechanism or the second conveying mechanism can be synchronously converged to the converging conveying unit, further improving the loading efficiency.

[0030] Optionally, the reversing mechanism includes two parallel conveyor belts and an adsorption unit extending along the second direction corresponding to each conveyor belt, the adsorption unit is configured to acquire the sheet conveyed to the bottom of the reversing mechanism and hold the acquired sheet on the conveying surface of the conveyor belt in a non-contact manner, and the conveyor belt is configured to transport the acquired sheet along the second direction to above the convergence conveying unit.

[0031] By arranging an adsorption unit extending along the conveying direction of the conveyor belt on each conveyor belt, the adsorption unit holds the sheet body on the conveying surface of at least two conveyor belts in a non-contact manner, and the sheet body is conveyed in an adsorption and suspension manner. The structure is simple, easy to implement, and the conveying is accurate and efficient. At the same time, because the adsorption force of the adsorption unit is distributed along the conveying direction of the conveyor belt, the adsorption force is generated around the conveyor belt along the conveying direction, the adsorption is stable and reliable, and it is not easy to cause deformation of the sheet body during adsorption.

[0032] Optionally, the first conveying mechanism is provided with a first detection component and a first material removal component, and the first detection component is provided on the conveying path of the first conveying mechanism and is configured to pre-detect the sheet conveyed on the first conveying mechanism. ， The first rejecting component is configured to reject the sheets that fail the pre-detection from the first conveying mechanism.

[0033] Through the cooperation of the first detection component and the first rejecting component, the pre-detection of the sheets on the first conveying mechanism and the automatic rejection of unqualified sheets are realized to prevent unqualified sheets from flowing into the subsequent process.

[0034] Optionally, the second conveying mechanism is provided with a second detection component and a second material removal component, and the second detection component is arranged on the conveying path of the second conveying mechanism located in front of the reversing mechanism, and is configured to pre-detect the sheet conveyed on the second conveying mechanism. ， The second rejecting component is configured to reject the sheets that fail the pre-detection from the second conveying mechanism.

[0035] Through the cooperation of the second detection component and the second rejection component, the sheet on the second conveying mechanism is pre-detected before being sent to the bottom of the reversing mechanism. At the same time, unqualified sheets are removed from the second conveying mechanism according to the detection results, so that the reversing mechanism only converges the qualified sheets on the second conveying mechanism to the convergence conveying unit, which helps to improve the loading efficiency.

[0036] Optionally, the first conveying mechanism is provided with a first detection component and a first material removal component, and the first detection component is provided on the conveying path of the first conveying mechanism and is configured to pre-detect the sheet conveyed on the first conveying mechanism. ， The first rejecting component is configured to reject the sheet that fails the pre-detection from the first conveying mechanism. The second conveying mechanism is provided with a second detecting component and a second rejecting component. The second detecting component is arranged on the conveying path of the second conveying mechanism located in front of the reversing mechanism and is configured to perform pre-detection on the sheet conveyed on the second conveying mechanism. ， The second rejecting component is configured to reject the sheets that fail the pre-detection from the second conveying mechanism.

[0037] Through the cooperation of the first detection component and the first ejection component and the cooperation of the second detection component and the second ejection component, the pre-detection of the sheets on the first conveying mechanism and the automatic removal of unqualified sheets are realized, and the sheets on the second conveying mechanism are pre-detected before being sent to the bottom of the reversing mechanism. At the same time, the unqualified sheets are removed from the second conveying mechanism according to the detection results, which helps to improve the loading efficiency while preventing the unqualified sheets from flowing into the subsequent process.

[0038] Optionally, the first conveying mechanism and the second conveying mechanism both include an accelerating conveying unit, a decelerating conveying unit and a uniform conveying unit arranged in sequence along the first direction, the accelerating conveying unit is configured to accelerate the conveyed sheet, the decelerating conveying unit is configured to decelerate the sheet conveyed by the accelerating conveying unit, and the uniform conveying unit is configured to convey the sheet conveyed by the decelerating conveying unit to the converging conveying unit at a uniform speed.

[0039] The accelerating conveying unit can increase the conveying speed to improve the feeding efficiency. The decelerating conveying unit can reduce the conveying speed of the sheet, thereby reducing the inertia of the sheet. The uniform speed conveying unit can achieve uniform speed conveying of the sheet, which can take into account both the feeding efficiency and the feeding stability.

[0040] Optionally, the accelerating conveying unit and the decelerating conveying unit adopt a horizontal conveying mode, and the uniform speed conveying unit adopts a horizontal conveying mode or an inclined conveying mode that is gradually lifted along the first direction.

[0041] By setting the accelerating conveying unit, the decelerating conveying unit and the uniform conveying unit to a horizontal conveying mode, a conveying mode with a simple structure, easy implementation and smooth conveying is provided; by setting the uniform conveying unit to an inclined conveying mode that gradually rises along a first direction, the sheet gradually approaches the reversing mechanism during the conveying process, making it easier for the reversing mechanism to obtain the sheet.

[0042] Optionally, the sheet feeding device includes at least two converging conveying units.

[0043] By providing at least two converging conveying units, the sheet loading device can be docked with the post-processing equipment including at least two main conveying lines, thereby improving the loading efficiency.

[0044] On the second aspect, the present application proposes a sorting machine, which includes the above-mentioned sheet loading device, conveying device, detection device and receiving device, wherein the sheet loading device is configured to convey the sheets to the conveying device in sequence, the conveying device is configured to receive the sheets provided by the sheet loading device, and convey the sheets to the detection device and the receiving device, the detection device is configured to detect the sheets conveyed to the detection area, and the receiving device is configured to receive the sheets conveyed to the receiving area according to the detection results.

[0045] Through the cooperation of the sheet feeding device, the conveying device, the detection device and the receiving device, the above-mentioned sorting machine can not only realize the automatic detection of the sheets, but also realize the automatic loading and sorting and receiving of the sheets. After adopting the sheet feeding device of the present application, while realizing uninterrupted and continuous loading, the loading efficiency is greatly improved, which can meet the production requirements of the sorting machine with fast beat and high production capacity.

[0046] On the third aspect, the present application proposes a screen printing machine, which includes the above-mentioned sheet loading device, printing table, printing device and sheet output device, wherein the printing table is located between the sheet loading device and the sheet output device, the printing device is located above the printing table, the sheet loading device is configured to convey the sheet to be printed to the printing table, the printing device is configured to print the sheet to be printed located on the printing table, and the sheet output device is configured to output the printed sheet.

[0047] Through the cooperation of the sheet loading device, the printing table, the printing device and the sheet output device, the above-mentioned screen printing machine can not only realize automatic printing of the sheet, but also realize automatic loading and unloading of the sheet. After adopting the sheet loading device of the present application, while realizing uninterrupted and continuous loading, the loading efficiency is greatly improved, which can meet the fast-beat and high-capacity production requirements of the screen printing machine.

[0048] On the third aspect, the present application proposes a laser processing machine, which includes the above-mentioned sheet loading device, laser processing device and sheet unloading device, wherein the sheet loading device is configured to supply the sheet to be processed to the laser processing device, the laser processing device is at least configured to perform laser grooving or laser doping on the sheet to be processed, and the sheet unloading device is configured to pick up the laser-processed sheet from the laser processing device and store the laser-processed sheet.

[0049] Through the cooperation of the sheet loading device, the laser processing device and the sheet unloading device, the above-mentioned laser processing machine can not only realize automatic laser grooving or automatic laser doping of the sheet, but also realize automatic loading and unloading of the sheet. After adopting the sheet loading device of the present application, while realizing uninterrupted and continuous loading, the loading efficiency is greatly improved, which can meet the fast-beat and high-capacity production requirements of the laser processing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a structural schematic diagram of a sheet feeding device provided in Example 1 of the present application;

[0051] Figure 2 This is a schematic diagram of an implementation of the reversing mechanism of the sheet feeding device of the present application;

[0052] Figure 3 This is a schematic diagram of an implementation of the adsorption unit of the reversing mechanism of the present application;

[0053] Figure 4 yes Figure 3 Exploded schematic diagram of the adsorption unit in;

[0054] Figure 5 It is a structural schematic diagram of another embodiment of the adsorption unit of the reversing mechanism of the present application;

[0055] Figure 6 It is a structural schematic diagram of a sheet feeding device provided in Example 2 of the present application;

[0056] Figure 7 It is a structural schematic diagram of a sheet feeding device provided in Embodiment 3 of the present application;

[0057] Figure 8 It is a structural schematic diagram of a sheet feeding device provided in Embodiment 4 of the present application;

[0058] Fig. 9 It is a structural schematic diagram of a sheet feeding device provided in Embodiment 5 of the present application;

[0059] Fig.10 It is a structural schematic diagram of a sheet feeding device provided in Example 6 of the present application;

[0060] Fig.11 It is a structural schematic diagram of a sheet feeding device provided in Embodiment 7 of the present application;

[0061] Fig.12 It is a structural schematic diagram of a sheet feeding device provided in Embodiment 8 of the present application;

[0062] Fig.13 It is a structural schematic diagram of a sheet feeding device provided in Embodiment 9 of the present application;

[0063] Fig.14 It is a schematic diagram of the structure of the sheet feeding device provided in the tenth embodiment of the present application.

[0064] Figures 1 to 14 The following reference numerals are included:

[0065] The first conveying mechanism 10,

[0066] The second conveying mechanism 20, the accelerating conveying unit 21, the decelerating conveying unit 22, and the uniform conveying unit 23,

[0067] The reversing mechanism 30, the first reversing unit 300, the second reversing unit 301, the third reversing unit 302, the fourth reversing unit 303, the conveyor belt 31, the adsorption unit 32, the base 320, the mounting portion 3200, the protrusion 3201, the guide member 321, the air flow guiding portion 323, the first air flow guiding portion 3230, the second air flow guiding portion 3231, the air supply port 324, the gasket 325, and the opening 3250,

[0068] Sheet 40,

[0069] The confluence position 50, the first confluence position 500, the second confluence position 501, the third confluence position 502, the fourth confluence position 503, the confluence transmission unit 51,

[0070] A first storage unit 60, a second storage unit 61;

[0071] The material box 70 is rejected. DETAILED DESCRIPTION

[0072] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0073] In the production process of photovoltaic cells, the silicon wafers or battery cells stored in the storage unit need to be taken out one by one by a loading device and released to a conveying mechanism, which then transports the silicon wafers or battery cells to the subsequent processing stations.

[0074] Conventional feeding devices mostly include a driving device and two horizontal conveying mechanisms. A feeding unit is set at the sheet-taking end of each horizontal conveying mechanism. The feeding unit is used to provide sheets to the corresponding horizontal conveying mechanism. In order to achieve uninterrupted feeding, the driving device drives the two horizontal conveying mechanisms to move back and forth horizontally along the horizontal guide rail to dock the corresponding horizontal conveying mechanism with the downstream station for feeding. While one of the two feeding units is loading, the other feeding unit switches between empty and full storage units. This method has the disadvantage of low feeding efficiency because it requires intermittent lateral switching of the horizontal conveying mechanism and cannot meet the current production requirements of fast beats and high production capacity.

[0075] Therefore, the present application provides a sheet feeding device for automatically feeding sheet materials, see Figure 1 As shown, the sheet feeding device provided in the embodiment of the present application includes a first conveying mechanism 10, a second conveying mechanism 20 and a reversing mechanism 30, wherein the first conveying mechanism 10 and the second conveying mechanism 20 are arranged side by side, and the first conveying mechanism 10 and the second conveying mechanism 20 are configured to be along a first direction ( Figure 1 The reversing mechanism 30 is located above the first conveying mechanism 10 and the second conveying mechanism 20, and the reversing mechanism 30 is arranged along the second direction ( Figure 1 The Y direction in the middle (in the Y direction) extends to cover the first conveying mechanism 10 and the second conveying mechanism 20, the second direction is perpendicular to the first direction, the reversing mechanism 30 is configured to obtain the sheet 40 conveyed by the first conveying mechanism 10 and / or the second conveying mechanism 20 to the bottom of the reversing mechanism 30, convey the obtained sheet 40 to the confluence position 50 along the second direction, and release the obtained sheet 40 to the confluence conveying unit 51 at the confluence position, and the confluence conveying unit 51 is configured to convey the sheet 40 to the subsequent workstation.

[0076] By arranging a reversing mechanism 30 above the first conveying mechanism 10 and the second conveying mechanism 20, the reversing mechanism 30 converges and conveys the sheets 40 conveyed by the first conveying mechanism 10 and the second conveying mechanism 20 to the convergence conveying unit 51, and the convergence conveying unit 51 provides the sheets to the subsequent workstations. While achieving uninterrupted loading, there is no need to perform the intermittent reciprocating translation of the horizontal conveying mechanism in the prior art, which can greatly improve the loading efficiency and meet the production requirements of fast beats and high production capacity.

[0077] As an embodiment, the sheet loading device also includes a first storage unit 60 and a second storage unit 61, which are respectively arranged at the input end of the first conveying mechanism 10 and the input end of the second conveying mechanism 20, and the first storage unit 60 and the second storage unit 61 each include at least one flower basket or material box.

[0078] By arranging storage units at the input ends of the first conveying mechanism 10 and the second conveying mechanism 20, the first conveying mechanism 10 and the second conveying mechanism 20 are fed with materials, thereby ensuring stable feeding of the sheet feeding device.

[0079] See also Figure 6 As shown, as an embodiment, the first conveying mechanism 10 and the second conveying mechanism 20 each include an accelerating conveying unit 21, a decelerating conveying unit 22 and a uniform speed conveying unit 23 arranged in sequence along a first direction, the accelerating conveying unit 21 is configured to accelerate the conveyed sheet, the decelerating conveying unit 22 is configured to decelerate the sheet conveyed by the accelerating conveying unit 21, and the uniform speed conveying unit 23 is configured to uniformly convey the sheet conveyed by the decelerating conveying unit 22 to the converging conveying unit 51.

[0080] The accelerating conveying unit 21 can increase the conveying speed to improve the feeding efficiency. The decelerating conveying unit 22 can reduce the conveying speed of the sheet, thereby reducing the inertia of the sheet. The uniform conveying unit 23 realizes uniform conveying of the sheet, which can take into account both the feeding efficiency and the stability of the feeding.

[0081] Specifically, the uniform speed conveying unit 23 is located below the reversing mechanism 30 , the accelerating conveying unit 21 and the decelerating conveying unit 22 adopt a horizontal conveying mode, and the uniform speed conveying unit 23 adopts a horizontal conveying mode or an inclined conveying mode that is gradually lifted along the first direction.

[0082] By setting the accelerating conveying unit 21, the decelerating conveying unit 22 and the uniform conveying unit 23 to a horizontal conveying mode, a conveying mode with a simple structure, easy implementation and smooth conveying is provided; by setting the uniform conveying unit 23 to an inclined conveying mode that gradually rises along the first direction, the sheet gradually approaches the reversing mechanism 30 during the conveying process, which facilitates the reversing mechanism to obtain the sheet.

[0083] As an embodiment, the first conveying mechanism 10 is provided with a first detection component and a first material removal component. The first detection component is arranged on the conveying path of the first conveying mechanism 10 and is configured to pre-detect the sheet conveyed on the first conveying mechanism 10. ， The first rejecting assembly is configured to reject the sheets that fail the pre-detection from the first conveying mechanism 10 .

[0084] Through the cooperation of the first detection component and the first rejecting component, the pre-detection of the sheets on the first conveying mechanism 10 and the automatic rejection of unqualified sheets are realized to prevent unqualified sheets from flowing into the subsequent process.

[0085] As an embodiment, the second conveying mechanism 20 is provided with a second detection component and a second material removal component, and the second detection component is arranged on the conveying path of the second conveying mechanism 20 located in front of the reversing mechanism 30, and is configured to pre-detect the sheet conveyed on the second conveying mechanism 20. ， The second rejecting assembly is configured to reject the sheets that fail the pre-detection from the second conveying mechanism 20 .

[0086] Through the cooperation of the second detection component and the second rejection component, the sheet on the second conveying mechanism 20 is pre-detected before being sent to the bottom of the reversing mechanism 30. At the same time, unqualified sheets are removed from the second conveying mechanism 20 according to the detection results, so that the reversing mechanism only converges the qualified sheets on the second conveying mechanism 20 to the convergence conveying unit 51, which helps to improve the loading efficiency.

[0087] As an embodiment, the first conveying mechanism 10 is provided with a first detection component and a first material removal component. The first detection component is arranged on the conveying path of the first conveying mechanism 10 and is configured to pre-detect the sheet 40 conveyed on the first conveying mechanism 10. ， The first rejecting component is configured to reject the sheet body that fails the pre-detection from the first conveying mechanism 10. The second conveying mechanism 20 is provided with a second detection component and a second rejecting component. The second detection component is arranged on the conveying path of the second conveying mechanism 20 located in front of the reversing mechanism 30, and is configured to perform pre-detection on the sheet body 40 conveyed on the second conveying mechanism 20. ， The second rejecting assembly is configured to reject the sheets that fail the pre-detection from the second conveying mechanism 20 .

[0088] Through the cooperation of the first detection component and the first ejection component as well as the cooperation of the second detection component and the second ejection component, pre-detection of the sheets on the first conveying mechanism 10 and automatic removal of unqualified sheets are achieved, and pre-detection of the sheets on the second conveying mechanism 20 is performed before they are sent to the bottom of the reversing mechanism 30. At the same time, unqualified sheets are removed from the second conveying mechanism 20 according to the detection results, which helps to improve the loading efficiency while preventing unqualified sheets from flowing into the subsequent processes.

[0089] As an embodiment, a third detection component and a third material removal component are provided on the convergence conveying unit 51. The third detection component is configured to detect the sheet 40 conveyed by the convergence conveying unit 51, and the third material removal component is configured to remove unqualified sheets from the convergence conveying unit 51 to prevent unqualified sheets from flowing into the subsequent process.

[0090] It should be noted that the first detection component, the second detection component and the third detection component all include ultrasonic sensors and / or cameras. The ultrasonic sensors are used to detect whether the sheet has a thickness exceeding a normal sheet (thick sheet) or whether there are multiple sheets stacked together, and the cameras are used to detect whether there are obvious missing corners of the sheet.

[0091] It should be noted that the first material removal component, the second material removal component and the third material removal component all include a rejection box 70, which can be set at the discharge end of the first conveying mechanism 10, the second conveying mechanism 20 or the converging conveying unit 51 as needed, and can also be set on the conveying path of the first conveying mechanism 10 located in front of the reversing mechanism 30, or on the conveying path of the second conveying mechanism 20 located in front of the reversing mechanism 30 as needed.

[0092] See also Figure 1 and Figure 2 As shown, as an embodiment, the reversing mechanism 30 includes two parallel conveyor belts 31 and an adsorption unit 32 extending along the second direction corresponding to each conveyor belt 31, the adsorption unit 32 is configured to obtain the sheet 40 conveyed to the bottom of the reversing mechanism 30 and hold the obtained sheet 40 on the conveying surface of the conveyor belt 31 in a non-contact manner, and the conveyor belt 31 is configured to convey the obtained sheet 40 along the second direction to above the convergence conveying unit 51.

[0093] By arranging an adsorption unit 32 extending along the conveying direction of the conveyor belt 31 on each conveyor belt 31, the adsorption unit 32 holds the sheet 40 on the conveying surface of at least two conveyor belts 31 in a non-contact manner, and conveys the sheet 40 in an adsorption suspension manner. This is different from the prior art in which the sheet is reversed by a lifting reversing mechanism (a reversing method commonly seen in the discharge area of ​​a traditional sorting machine) or the sheet is directly picked up from one conveying mechanism and placed on another conveying mechanism by a manipulator. Through the adsorption suspension conveying, it is possible to achieve fixed conveying paths between the first conveying mechanism and the reversing mechanism, between the second conveying mechanism and the reversing mechanism, and between the converging conveying unit and the reversing mechanism, without any Any one of the mechanisms performs translation, lifting and other actions, which greatly improves the working efficiency of the sheet feeding device, and the structure of the adsorption unit is simple, easy to implement, and the conveying is accurate and efficient. At the same time, because the adsorption force of the adsorption unit 32 is distributed along the conveying direction of the conveyor belt 31, the adsorption force is generated around the conveyor belt 31 along the conveying direction, rather than concentrated between the two conveyor belts 31 (the traditional method of setting a circular suction cup between the two conveyor belts, the negative pressure is concentrated between the two conveyor belts, which will cause the sheet to deform), so it is not easy to cause the sheet 40 to deform during adsorption, and the negative pressure of the adsorption unit extending along the conveying direction of the conveyor belt 31 is stable in the conveying direction, which is more conducive to the stable and uninterrupted continuous conveying of the sheet on the conveyor belt.

[0094] The principle of the above-mentioned reversing mechanism 30 to carry out adsorption and suspension conveying of the sheet 40 is as follows:

[0095] When the sheet 40 is conveyed to the bottom of the reversing mechanism 30, gas is introduced into the air supply port 324 of the adsorption unit 32, and a uniform negative pressure based on the Bernoulli effect is generated in the conveying direction of the conveyor belt 31. The sheet 40 below the reversing mechanism 30 is kept contactlessly on the conveying surface of the conveyor belt 31 by the negative pressure, so that the sheet is in a suspended state. While the sheet 40 is kept on the conveying surface of the conveyor belt 31, the conveyor belt 31 works to transport the sheet 40 along the second direction to just above the confluence position. The adsorption unit 32 is cut off, the negative pressure is eliminated, and the sheet 40 on the conveyor belt 31 is released to the confluence conveying unit 51 by its own weight.

[0096] See also Figures 2 to 4As shown, as an optional embodiment of an adsorption unit 32, each adsorption unit 32 includes a base 320 and a guide member 321, the base 320 is installed close to the corresponding conveyor belt 31 and is at least used to support the conveying surface of the conveyor belt 31; the guide member 321 is installed on the base 320, an air cavity 322 is formed between the guide member 321 and the base 320, an air flow guide portion 323 connected to the air cavity 322 is formed between the guide member 321 and the base 320, and an air supply port 324 is provided on the guide member 321, compressed gas enters the air cavity 322 through the air supply port 324, and then flows out from the air flow guide portion 323 through the air cavity 322 to keep the sheet 40 on the conveying surface of the conveyor belt 31 in a non-contact manner based on the negative pressure generated by the Bernoulli effect.

[0097] The adsorption unit 32 can generate a uniform negative pressure based on the Bernoulli effect in the conveying direction of the conveyor belt 31 through the cooperation of the air supply port 324, the air cavity 322 and the airflow guide part 323, so as to keep the sheet body 40 in a non-contact manner on the conveying surface of at least two conveyor belts 31. The adsorption is stable and reliable, and the sheet body 40 is kept in a suspended state. At the same time, the base 320 can support the conveying surface of the conveyor belt 31, which can avoid the conveyor belt 31 from jumping when converging the sheet body 40, thereby improving the stability of the sheet body 40 when converging.

[0098] As an embodiment, the base 320 includes a mounting portion 3200 and a protrusion 3201, the mounting portion 3200 is used to support the corresponding conveyor belt 31; the protrusion 3201 is arranged to protrude from the mounting portion 3200, the protrusion 3201 is located on the side of the conveyor belt 31 and forms a gap with the sheet conveyed by the conveyor belt 31.

[0099] The mounting portion 3200 supports the conveyor belt 31. During the convergence of the sheet body 40, the adsorption unit 32 is always in an air supply state. The protrusion 3201 can block the high-speed gas flowing out from the airflow guide portion 323 while meeting the installation gap of the conveyor belt 31, thereby preventing the high-speed gas flowing out from the airflow guide portion 323 from directly blowing onto the conveyor belt 31 and causing the conveyor belt 31 to shake, thereby further improving the stability of the convergence of the sheet body 40.

[0100] As an embodiment, there are multiple independent air cavities 322 between the guide member 321 and the base 320, and the guide member 321 is provided with air supply ports 324 corresponding to the air cavities 322 one by one, and there are air flow guiding parts 323 corresponding to the air cavities 322 between the guide member 321 and the base 320.

[0101] By setting a plurality of independent air cavities 322 between the guide member 321 and the base 320, the guide member 321 is provided with an air supply port 324 corresponding to the air cavities 322, and the guide member 321 and the base 320 have an air flow guiding portion 323 corresponding to the air cavities 322, it is possible to form a plurality of independent adsorption areas extending along the conveying direction of the conveyor belt 31 on the adsorption unit, each adsorption area works independently with air supply, and avoids the adsorption unit being unable to adsorb the sheet due to abnormal air supply, thereby improving the reliability of confluence. In addition, by controlling the setting intervals of the plurality of independent adsorption areas along the conveying direction, the required negative pressure conditions such as uniformity along the conveying direction, gradual increase in negative pressure, and gradual decrease in negative pressure can be obtained, so that the sheet 40 is released after converging to the top of the converging conveying unit 51.

[0102] As an embodiment, each adsorption unit also includes a gasket 325 having an opening 3250 . The gasket 325 is arranged at the periphery of the air cavity 322 , and the opening 3250 faces the outflow direction of the airflow. The gasket 325 is used to form an airflow guiding portion 323 between the base 320 and the guide member 321 .

[0103] By cooperating with the base 320, the guide member 321 and the gasket 325, an airflow guide portion 323 is formed between the base 320 and the guide member 321. The base 320, the guide member 321 and the gasket 325 are designed as a split structure, providing an adsorption unit 20 that is easy to manufacture and maintain. At the same time, the number and thickness of the gaskets 325 can be replaced as needed to adjust the adsorption force of the adsorption unit 20.

[0104] See also Figure 5 As shown, as an optional embodiment of an adsorption unit, a first airflow guiding portion 3230 and a second airflow guiding portion 3231 are respectively formed on both sides between the guide member 321 and the base 320, and the airflow outflow direction of the first airflow guiding portion 3230 is opposite to the airflow outflow direction of the second airflow guiding portion 3231.

[0105] The compressed gas enters the air cavity 322 through the air supply port 324, and flows out through the first airflow guide part 3230 and the second airflow guide part 3231 on both sides between the guide member 321 and the base 320. The negative pressure generated by the Bernoulli effect keeps the sheet on the conveying surface of the conveyor belt 31 in a non-contact manner.

[0106] By simultaneously generating negative pressure based on the Bernoulli effect by the first airflow guiding part 3230 and the second airflow guiding part 3231 on both sides between the guide member 321 and the base 320, the sheet is adsorbed, which can provide a more stable adsorption force, further improve the smoothness of the sheet convergence, and complete the adsorption of the sheet with a smaller air supply.

[0107] In different application scenarios, the above-mentioned sheet feeding device can be used in different combinations for feeding, and specifically, the combination forms proposed in the following embodiments can be used:

[0108] Embodiment 1

[0109] Please refer again Figure 1 As shown, as an implementation mode, the converging conveying unit 51 is the first conveying mechanism 10 , that is, the converging conveying unit 51 and the first conveying mechanism 10 use the same conveying mechanism.

[0110] By using the first conveying mechanism 10 as the converging conveying unit 51, the reversing mechanism 30 does not need to reverse the sheet 40 conveyed by the first conveying mechanism 10, and the first conveying mechanism 10 can always convey the sheet along the first direction. The reversing mechanism 30 only needs to reverse the sheet 40 conveyed by the second conveying mechanism 20 and converge it onto the first conveying mechanism 10, thereby realizing the converging of the first conveying mechanism 10 and the second conveying mechanism 20. Instead of setting a separate converging conveying unit 51, the first conveying mechanism 10 is directly used as the converging conveying unit, which has low cost and simple and compact structure.

[0111] Figure 1 The solid line A in FIG. 1 shows the feeding path of the sheet on the first conveying mechanism 10. Figure 1 The dotted line B in the figure shows the loading path of the sheet on the second conveying mechanism 20. Specifically, during loading, initially, the first conveying mechanism 10 receives the sheet provided by the first storage unit 60, and the first conveying mechanism 10 directly conveys the sheet to the subsequent workstation along the first direction. When the sheet in the first storage unit 60 is almost finished or finished, the second conveying mechanism 20 starts to receive the sheet provided by the second storage unit 61, and the second conveying mechanism 20 conveys the sheet to the bottom of the reversing mechanism 30. The reversing mechanism 30 obtains the sheet and conveys the sheet to the top of the first conveying mechanism 10 and then releases it, so as to move the sheet on the second conveying mechanism 20 to the first conveying mechanism 10 by converging. The sheet on the second conveying mechanism 20 is then conveyed to the subsequent workstation by the first conveying mechanism 10. During the entire loading process, both the loading path of the first conveying mechanism along the solid line A and the loading path of the second conveying mechanism along the dotted line B are complete and fixed-route loading paths. While the second conveying mechanism 20 is working, the first storage unit 60 of the first conveying mechanism 10 can be loaded to achieve uninterrupted continuous loading. The loading paths A and B will not be affected by the loading, which can greatly improve the loading efficiency of the loading device of the present application.

[0112] In this embodiment, the second conveying mechanism 20 is provided with a second detection component and a second material rejection component, the second detection component is arranged on the conveying path of the second conveying mechanism 20 located in front of the reversing mechanism 30, and the rejection box 70 of the second material rejection component is arranged at the discharge end of the second conveying mechanism 20; the discharge end of the first conveying mechanism 10 is provided with a first detection component and a first material rejection component, and the first detection unit is configured to detect the sheet conveyed on the first conveying mechanism 10 ， The reject box 70 of the first reject assembly is arranged at the discharging end of the first conveying mechanism 10 .

[0113] By setting a second detection component on the conveying path of the second conveying mechanism 20 located in front of the reversing mechanism 30, the sheet can be inspected before it is sent to the reversing mechanism 30, so that unqualified sheets can directly flow into the rejection box 70 of the second rejection component, and the reversing mechanism 30 only merges the qualified sheets conveyed by the second conveying mechanism 20 into the confluence conveying unit 51, which helps to improve the loading efficiency; at the same time, the first detection component is set at the discharge end of the first conveying mechanism 10, which can detect the sheets conveyed by the first conveying mechanism 10, and re-inspect the qualified sheets on the second conveying mechanism 20 that converge into the first conveying mechanism 10. After the detection, the unqualified sheets directly flow into the rejection box 70 of the first rejection component.

[0114] Embodiment 2

[0115] See also Figure 6 As shown, as an embodiment, the confluence conveying unit 51 is arranged in line with the first conveying mechanism 10, the input end of the confluence conveying unit 51 is located below the reversing mechanism 30 and is connected to the output end of the first conveying mechanism 10, the conveying surface of the confluence conveying unit 51 is coplanar with the conveying surface of the first conveying mechanism 10, and the confluence conveying unit 51 is configured to convey the sheet from the first conveying mechanism 10 along the first direction and / or convey the sheet released by the reversing mechanism 30 along the first direction.

[0116] By setting a confluence conveying unit 51 colinear with the first conveying mechanism 10 at the output end thereof, in addition to the advantage that the reversing mechanism 30 does not need to reverse the sheet 40 conveyed by the first conveying mechanism 10, the conveying speeds of the first conveying mechanism 10 and the confluence conveying unit 51 can also be independently controlled, and the conveying speed of the confluence conveying unit 51 in conveying the sheet 40 to the subsequent workstation can be more flexibly controlled to meet the needs of different application scenarios.

[0117] The main difference between the second embodiment and the first embodiment is that the converging conveying unit 51 in the second embodiment is a separately arranged conveying unit, and the converging conveying unit 51 is arranged in line with the first conveying mechanism 10, and its loading process is the same as that of the first embodiment, which will not be repeated here.

[0118] In this embodiment, the second conveying mechanism 20 is provided with a second detection component and a second rejecting component. The second detection component is arranged on the conveying path of the second conveying mechanism 20 located in front of the reversing mechanism 30, and the rejecting box 70 of the second rejecting component is arranged at the discharge end of the second conveying mechanism 20; the first conveying mechanism 10 has a first detection component and a first rejecting component on the conveying path, and the rejecting box of the first rejecting component is arranged at the discharge end of the first conveying mechanism 10.

[0119] By setting a second detection component on the conveying path of the second conveying mechanism 20 located in front of the reversing mechanism 30, the sheet on the second conveying mechanism 20 can be inspected before it is sent to the reversing mechanism 30, so that unqualified sheets can directly flow into the rejection box 70 of the second rejecting component. The reversing mechanism 30 only merges the qualified sheets conveyed by the second conveying mechanism 20 into the converging conveying unit 51, which helps to improve the loading efficiency; at the same time, the first detection component detects the sheets conveyed by the first conveying mechanism 10, and sends the unqualified sheets to the rejection box of the first rejecting component to prevent unqualified sheets from flowing into the converging conveying unit 51.

[0120] Embodiment 3

[0121] See also Figure 7 As shown, as an embodiment, the confluence conveying unit 51 is extended along the first direction and is arranged between the first conveying mechanism 10 and the second conveying mechanism 20, the input end of the confluence conveying unit 51 is located below the reversing mechanism 30, and the confluence conveying unit 51 is configured to convey the sheet 40 released by the reversing mechanism 30 along the first direction, and the reversing mechanism 30 can automatically switch the conveying direction.

[0122] By arranging the converging conveying unit 51 between the first conveying mechanism 10 and the second conveying mechanism 20, the conveying speed between the converging conveying unit 51 and the first conveying mechanism 10 and the conveying speed between the converging conveying unit 51 and the second conveying mechanism 20 can be independently controlled, and the control of the loading speed is more flexible. In addition, when there are multiple first conveying mechanisms and multiple second conveying mechanisms, the sheet loading device will be more compact in width.

[0123] The main difference between Example 3 and Example 1 is that in Example 3, a converging conveying unit 51 is separately provided, and the converging conveying unit 51 is arranged between the first conveying mechanism 10 and the second conveying mechanism 20. The directions in which the sheets 40 on the first conveying mechanism 10 and the second conveying mechanism 20 are converged by the reversing mechanism 30 are opposite. When the sheets 40 on the first conveying mechanism 10 converge, the reversing mechanism 30 conveys the sheets 40 on the first conveying mechanism 10 to the right and converges them onto the converging conveying unit 51. When the sheets 40 on the second conveying mechanism 20 converge, the reversing mechanism 30 conveys the sheets 40 on the second conveying mechanism 20 to the left and converges them onto the converging conveying unit 51. The other loading processes are the same as those in Example 1 and will not be described again here.

[0124] It should be noted that when the reversing mechanism 30 in this embodiment conveys the sheet to the first conveying mechanism 10 or the second conveying mechanism 20, the conveying direction of the reversing mechanism 30 needs to be switched. The switching direction takes about 0.35 seconds. In the traditional method, the two horizontal conveying mechanisms are driven to move back and forth horizontally along the horizontal guide rail to connect the corresponding horizontal conveying mechanism with the downstream workstation for loading. The single switching time takes at least 2 seconds. On average, this embodiment can load about 1,500 more sheets per hour than the traditional loading method.

[0125] In this embodiment, the second conveying mechanism 20 is provided with a second detection component and a second rejecting component, the second detection component is arranged on the conveying path of the second conveying mechanism 20 located in front of the reversing mechanism 30, and the rejecting box 70 of the second rejecting component is arranged at the discharge end of the second conveying mechanism 20; the first conveying mechanism 10 is provided with a first detection component and a first rejecting component, the first detection component is arranged on the conveying path of the first conveying mechanism 10 located in front of the reversing mechanism 30, and the rejecting box 70 of the first rejecting component is arranged at the discharge end of the first conveying mechanism 10.

[0126] By respectively arranging the first detection component and the second detection component on the conveying paths of the first conveying mechanism 10 and the second conveying mechanism 20 located in front of the reversing mechanism 30, the sheets on the first conveying mechanism 10 and the second conveying mechanism 20 can be inspected before being sent to the reversing mechanism 30, so that unqualified sheets can directly flow into the rejection boxes 70 of the first and second rejection components. The reversing mechanism 30 only merges the qualified sheets conveyed by the first conveying mechanism 10 and the second conveying mechanism 20 into the converging conveying unit 51, which helps to improve the loading efficiency.

[0127] Embodiment 4

[0128] See also Figure 8As shown, as an embodiment, the sheet loading device includes two second conveying mechanisms 20, the two second conveying mechanisms 20 are located on the same side of the first conveying mechanism 10 in the first direction, and the confluence conveying unit 51 is the first conveying mechanism 10, that is, the confluence conveying unit 51 and the first conveying mechanism 10 use the same conveying mechanism.

[0129] By arranging two second conveying mechanisms 20 on the same side of the first conveying mechanism 10, the reversing mechanism 30 can first merge the sheets on one of the second conveying mechanisms 20 into the confluence conveying unit 51 when all the sheets on the first conveying mechanism 10 are or are about to be merged into the confluence conveying unit 51, and then merge the sheets on the other second conveying mechanism 20 into the confluence conveying unit 51 when all the sheets on one of the second conveying mechanisms 20 are or are about to be merged into the confluence conveying unit 51. While one of the conveying mechanisms is working, the remaining two conveying mechanisms can be loaded to achieve uninterrupted continuous loading, thereby further improving the loading efficiency.

[0130] It should be noted that in order to prevent unqualified sheets from occupying the resources of the convergence process of the sheet feeding device and flowing into the subsequent process, detection components and rejection boxes can be set on the first conveying mechanism 10, the second conveying mechanism 20 and / or the convergence conveying unit 51 according to actual needs, which will not be repeated here.

[0131] Embodiment 5

[0132] See also Fig. 9 As shown, as an embodiment, the sheet loading device includes two second conveying mechanisms 20, and the two second conveying mechanisms 20 are located on both sides of the first conveying mechanism 10 in the first direction. The converging conveying unit 51 is the first conveying mechanism 10, that is, the converging conveying unit 51 and the first conveying mechanism 10 use the same conveying mechanism, and the reversing mechanism 30 can automatically switch the conveying direction.

[0133] The main difference between this embodiment and the third embodiment is that in this embodiment, the converging conveying unit 51 is the first conveying mechanism 10, that is, the converging conveying unit 51 also has a loading function. The directions in which the reversing mechanism 30 converges the sheets 40 on the first conveying mechanism 10 and the second conveying mechanism 20 are opposite. When the sheets 40 on the first conveying mechanism 10 converge, the reversing mechanism 30 conveys the sheets 40 on the first conveying mechanism 10 to the right and converges them on the converging conveying unit 51. When the sheets 40 on the second conveying mechanism 20 converge, the reversing mechanism 30 conveys the sheets 40 on the second conveying mechanism 20 to the left and converges them on the converging conveying unit 51.

[0134] By respectively arranging a second conveying mechanism 20 on both sides of the first conveying mechanism 10, the first conveying mechanism 10 can convey the sheet along the first direction all the time, and the reversing mechanism 30 respectively reverses the direction of the sheets conveyed by the two second conveying mechanisms 20 and merges them onto the first conveying mechanism 10, that is, when the sheets of one of the second conveying mechanisms 20 are completely merged into or are about to be completely merged into the first conveying mechanism 10, the sheets of the other second conveying mechanism 20 are then merged into the first conveying mechanism 10, thereby further improving the loading efficiency.

[0135] It should be noted that in order to prevent unqualified sheets from occupying the resources of the sheet feeding device's converging process and flowing into the subsequent process, detection components and rejection boxes can be set on the first conveying mechanism 10, the second conveying mechanism 20 and / or the converging conveying unit 51 according to actual needs, which will not be repeated here.

[0136] Embodiment 6

[0137] See also Fig.10 As shown, as an embodiment, the sheet loading device includes two second conveying mechanisms 20, and the two second conveying mechanisms 20 are located on both sides of the first conveying mechanism 10 in the first direction. The converging conveying unit 51 is the first conveying mechanism 10, that is, the converging conveying unit 51 and the first conveying mechanism 10 use the same conveying mechanism.

[0138] The main difference between this embodiment and the fifth embodiment is that the reversing mechanism 30 includes a first reversing unit 300 and a second reversing unit 301 arranged at intervals along the first direction, the first reversing unit 300 extends along the second direction to cover the first conveying mechanism 10 and at least one second conveying mechanism 20, and the first reversing unit 300 is configured to obtain the sheet conveyed to the bottom of the first reversing unit 300 by the first conveying mechanism 10 and / or at least one second conveying mechanism 20, and convey the obtained sheet to the first confluence position 500 along the second direction;

[0139] The second reversing unit 301 extends along the second direction to cover the first conveying mechanism 10 and the remaining second conveying mechanisms 20. The second reversing unit 301 is configured to obtain the sheet conveyed by the first conveying mechanism 10 and / or the remaining second conveying mechanisms 20 to the bottom of the second reversing unit 301, and convey the obtained sheet to the second confluence position 501 along the second direction. The first reversing unit 300 and the second reversing unit 301 convey the sheet in the opposite direction along the second direction.

[0140] The first confluence position 500 and the second confluence position 501 are located at two different positions of the confluence transport unit 51 along the first direction.

[0141] By setting two confluence positions, the first confluence position 500 and the second confluence position 501, with the cooperation of the first reversing unit 300 and the second reversing unit 301, the first confluence position 500 and the second confluence position 501 can simultaneously receive the confluenced sheets, and can also alternately receive the confluenced sheets, thereby improving the flexibility of loading and having higher loading compatibility.

[0142] It should be noted that in order to prevent unqualified sheets from occupying the resources of the sheet feeding device's converging process and flowing into the subsequent process, detection components and rejection boxes can be set on the first conveying mechanism 10, the second conveying mechanism 20 and / or the converging conveying unit 51 according to actual needs, which will not be repeated here.

[0143] Embodiment 7

[0144] See also Fig.11 As shown, as an implementation mode, two conveying mechanisms are respectively arranged on both sides of the converging conveying unit 51 in the first direction to form a sheet feeding device with four conveying mechanisms, thereby improving the feeding efficiency.

[0145] The main difference between this embodiment and the third embodiment is that: in this embodiment, two first conveying mechanisms 10 are arranged in parallel on the first side of the first direction of the converging conveying unit 51, and two second conveying mechanisms 20 are arranged in parallel on the second side of the first direction. The two first conveying mechanisms 10 and the two second conveying mechanisms 20 can share a set of reversing mechanisms 30. When sharing a set of reversing mechanisms 30, the reversing mechanism 30 can switch the conveying direction. Of course, two independent sets of reversing mechanisms 30 can be used between the two first conveying mechanisms 10 and the converging conveying unit 51 and between the two second conveying mechanisms 20 and the converging conveying unit 51. The conveying directions of the two sets of reversing mechanisms 30 are opposite when reversing and converging.

[0146] It should be noted that in order to prevent unqualified sheets from occupying the resources of the sheet feeding device's converging process and flowing into the subsequent process, detection components and rejection boxes can be set on the first conveying mechanism 10, the second conveying mechanism 20 and / or the converging conveying unit 51 according to actual needs, which will not be repeated here.

[0147] Embodiment 8

[0148] See also Fig.12 As shown, as an embodiment, the sheet loading device includes at least two converging conveying units 51. By setting at least two converging conveying units 51, the sheet loading device can be connected to the post-processing equipment including at least two main conveying lines, thereby improving the loading compatibility and loading efficiency.

[0149] It should be noted that in order to prevent unqualified sheets from occupying the resources of the conveying process or the converging process of the sheet loading device and flowing into the subsequent process, detection components and rejection boxes can be set on the first conveying mechanism 10, the second conveying mechanism 20 and / or the converging conveying unit 51 according to actual needs, which will not be repeated here.

[0150] Embodiment 9

[0151] See also Fig.13 As shown, as an implementation mode, the main difference between this embodiment and embodiment 1 is that the sheet loading device of this embodiment includes at least two reversing mechanisms 30, at least two reversing mechanisms 30 are arranged at intervals along the first direction, and the confluence conveying unit 51 is provided with at least two confluence positions 50 at intervals along the first direction, each confluence position 50 corresponds to a reversing mechanism 30, and at least two reversing mechanisms 30 are configured to synchronously obtain at least two sheets 40 conveyed by the first conveying mechanism 10 or the second conveying mechanism 20 to the bottom of the corresponding reversing mechanism 30, and synchronously convey the obtained at least two sheets 40 along the second direction to the corresponding confluence position 50, and release the obtained at least two sheets 40 to the confluence conveying unit 51 at the confluence position 50.

[0152] By setting at least two converging positions 50 on the converging conveying unit 51, with the cooperation of at least two reversing mechanisms 30, at least two sheets 40 on the first conveying mechanism 10 or the second conveying mechanism 20 can be synchronously converged to the converging conveying unit 51, further improving the loading efficiency.

[0153] It should be noted that in order to prevent unqualified sheets from occupying the resources of the sheet feeding device's converging process and flowing into the subsequent process, detection components and rejection boxes can be set on the first conveying mechanism 10, the second conveying mechanism 20 and / or the converging conveying unit 51 according to actual needs, which will not be repeated here.

[0154] Embodiment 10

[0155] See also Fig.14 As shown, as an implementation mode, the main difference between this embodiment and embodiment five is that the sheet loading device of this embodiment includes at least two second conveying mechanisms and is separately provided with a converging conveying unit 51, and the converging conveying unit 51 extends along the first direction and is arranged between the first conveying mechanism 10 and the second conveying mechanism 20.

[0156] The reversing mechanism 30 includes a third reversing unit 302 and a fourth reversing unit 303 arranged at intervals along the first direction. The third reversing unit 302 extends along the second direction to cover the converging conveying unit 51, the first conveying mechanism 10 and the at least one second conveying mechanism 20. The third reversing unit 302 is configured to obtain the sheet 40 conveyed by the first conveying mechanism 10 and / or the at least one second conveying mechanism 20 to the bottom of the third reversing unit 302, and convey the obtained sheet 40 to the third converging position 502 along the second direction.

[0157] The fourth reversing unit 303 extends along the second direction to cover the converging conveying unit 51 and the remaining second conveying mechanisms 20. The fourth reversing unit 303 is configured to obtain the sheet 40 conveyed by the remaining second conveying mechanisms 20 to the bottom of the fourth reversing unit 303, and convey the obtained sheet 40 to the fourth converging position 503 along the second direction. The third reversing unit 302 and the fourth reversing unit 303 convey the sheets in opposite directions along the second direction.

[0158] The third confluence position 502 and the fourth confluence position 503 are located at two different positions of the confluence transport unit 51 along the first direction.

[0159] By setting two confluence positions, the third confluence position 502 and the fourth confluence position 503, with the cooperation of the third reversing unit 302 and the fourth reversing unit 303, the third confluence position 502 and the fourth confluence position 503 can simultaneously receive the confluenced sheets, and can also alternately receive the confluenced sheets, thereby improving the flexibility of loading and having higher loading compatibility.

[0160] It should be noted that in order to prevent unqualified sheets from occupying the resources of the sheet feeding device's converging process and flowing into the subsequent process, detection components and rejection boxes can be set on the first conveying mechanism 10, the second conveying mechanism 20 and / or the converging conveying unit 51 according to actual needs, which will not be repeated here.

[0161] The sheet feeding device provided in the embodiment of the present application has the following advantages:

[0162] 1) The confluence method is adopted to realize uninterrupted and continuous feeding, without the need for intermittent reciprocating translation of the conveying mechanism, which can greatly improve the feeding efficiency and meet the production requirements of fast beat and high capacity;

[0163] 2) It can be combined into a feeding device that meets different application scenarios according to different needs, with good compatibility;

[0164] 3) The reversing mechanism adopts the reversing method of adsorption suspension and then transportation, which has a simple structure, is easy to implement, and has accurate and efficient transportation;

[0165] 4) It has a pre-detection function, which can greatly reduce the defective rate of the sheets flowing into the subsequent process;

[0166] 5) The adsorption unit can provide an adsorption force evenly distributed along the conveying direction of the conveyor belt, which can avoid deformation of the sheet when adsorbing the sheet.

[0167] An embodiment of the present application also proposes a sorting machine, which includes the above-mentioned sheet loading device, conveying device, detection device and receiving device, wherein the sheet loading device is configured to convey the sheets to the conveying device in sequence, the conveying device is configured to receive the sheets provided by the sheet loading device, and convey the sheets to the detection device and the receiving device, the detection device is configured to detect the sheets conveyed to the detection area, and the receiving device is configured to receive the sheets conveyed to the receiving area according to the detection results.

[0168] Through the cooperation of the sheet feeding device, the conveying device, the detection device and the receiving device, the above-mentioned sorting machine can not only realize the automatic detection of the sheets, but also realize the automatic loading and sorting and receiving of the sheets. After adopting the sheet feeding device of the present application, while realizing uninterrupted and continuous loading, the loading efficiency is greatly improved, which can meet the production requirements of the sorting machine with fast beat and high production capacity.

[0169] The embodiment of the present application also proposes a screen printing machine, which includes the above-mentioned sheet loading device, printing table, printing device and sheet output device, wherein the printing table is located between the sheet loading device and the sheet output device, the printing device is located above the printing table, the sheet loading device is configured to convey the sheet to be printed to the printing table, the printing device is configured to print the sheet to be printed located on the printing table, and the sheet output device is configured to output the printed sheet.

[0170] Through the cooperation of the sheet loading device, the printing table, the printing device and the sheet output device, the above-mentioned screen printing machine can not only realize automatic printing of the sheet, but also realize automatic loading and unloading of the sheet. After adopting the sheet loading device of the present application, while realizing uninterrupted and continuous loading, the loading efficiency is greatly improved, which can meet the fast-beat and high-capacity production requirements of the screen printing machine.

[0171] An embodiment of the present application also proposes a laser processing machine, which includes the above-mentioned sheet loading device, laser processing device and sheet unloading device, wherein the sheet loading device is configured to supply the sheet to be processed to the laser processing device, the laser processing device is at least configured to perform laser grooving or laser doping on the sheet to be processed, and the sheet unloading device is configured to pick up the laser-processed sheet from the laser processing device and store the laser-processed sheet.

[0172] Through the cooperation of the sheet loading device, the laser processing device and the sheet unloading device, the above-mentioned laser processing machine can not only realize automatic laser grooving or automatic laser doping of the sheet, but also realize automatic loading and unloading of the sheet. After adopting the sheet loading device of the present application, while realizing uninterrupted and continuous loading, the loading efficiency is greatly improved, which can meet the fast-beat and high-capacity production requirements of the laser processing machine.

[0173] The above embodiments are only to illustrate the basic principles and characteristics of the present application. The present application is not limited by the above examples. Without departing from the spirit and scope of the present application, the present application may be subject to various changes and modifications, which are within the scope of the present application to be protected. The scope of protection claimed in the present application is defined by the attached claims and their equivalents.

Claims

1. A sheet feeding device, characterized in that: The sheet feeding device comprises a first conveying mechanism, a second conveying mechanism and a reversing mechanism, wherein: The first conveying mechanism and the second conveying mechanism are arranged side by side, and the first conveying mechanism and the second conveying mechanism are configured to convey the sheet along the first direction; the reversing mechanism is located above the first conveying mechanism and the second conveying mechanism, and the reversing mechanism extends to cover the first conveying mechanism and the second conveying mechanism along the second direction, the second direction is perpendicular to the first direction, and the reversing mechanism is configured to obtain the sheet conveyed by the first conveying mechanism and / or the second conveying mechanism to the bottom of the reversing mechanism, convey the obtained sheet along the second direction to the confluence position, and release the obtained sheet to the confluence conveying unit at the confluence position, and the confluence conveying unit is configured to convey the sheet to the subsequent workstation.

2. The sheet feeding device according to claim 1, characterized in that: The confluence conveying unit is the first conveying mechanism; Alternatively, the converging conveying unit is arranged in line with the first conveying mechanism, the input end of the converging conveying unit is located below the reversing mechanism and docked with the output end of the first conveying mechanism, the conveying surface of the converging conveying unit is coplanar with the conveying surface of the first conveying mechanism, and the converging conveying unit is configured to convey the sheet from the first conveying mechanism along the first direction and / or convey the sheet released by the reversing mechanism along the first direction; Alternatively, the converging conveying unit is extended along the first direction and arranged between the first conveying mechanism and the second conveying mechanism, the input end of the converging conveying unit is located below the reversing mechanism, and the converging conveying unit is configured to convey the sheets released by the reversing mechanism along the first direction.

3. The sheet feeding device according to claim 1, characterized in that: The sheet loading device also includes a first storage unit and a second storage unit, which are respectively arranged at the input end of the first conveying mechanism and the input end of the second conveying mechanism, and the first storage unit and the second storage unit each include at least one flower basket or material box.

4. The sheet feeding device according to claim 1, characterized in that: The sheet feeding device comprises at least two second conveying mechanisms, and the at least two second conveying mechanisms are located on the same side or both sides of the first conveying mechanism.

5. The sheet feeding device according to claim 4, characterized in that: The reversing mechanism comprises a first reversing unit and a second reversing unit arranged at intervals along a first direction, the first reversing unit extends along a second direction to cover the first conveying mechanism and at least one second conveying mechanism, the first reversing unit is configured to obtain a sheet conveyed to the bottom of the first reversing unit by the first conveying mechanism and / or at least one second conveying mechanism, and convey the obtained sheet to a first confluence position along the second direction; The second reversing unit extends along the second direction to cover the first conveying mechanism and the remaining second conveying mechanisms, and the second reversing unit is configured to obtain the sheet conveyed by the first conveying mechanism and / or the remaining second conveying mechanisms to the bottom of the second reversing unit, and convey the obtained sheet along the second direction to the second confluence position; The first confluence position and the second confluence position are located at two different positions of the confluence transport unit along a first direction.

6. The sheet feeding device according to claim 4, characterized in that: The reversing mechanism comprises a third reversing unit and a fourth reversing unit arranged at intervals along the first direction, the third reversing unit extends along the second direction to cover the converging conveying unit, the first conveying mechanism and at least one second conveying mechanism, the third reversing unit is configured to obtain the sheet conveyed by the first conveying mechanism and / or at least one second conveying mechanism to the bottom of the third reversing unit, and convey the obtained sheet to the third converging position along the second direction; The fourth reversing unit extends along the second direction to cover the converging conveying unit and the remaining second conveying mechanisms, and the fourth reversing unit is configured to obtain the sheet conveyed by the remaining second conveying mechanisms to the bottom of the fourth reversing unit, and convey the obtained sheet to the fourth converging position along the second direction; The third confluence position and the fourth confluence position are located at two different positions of the confluence transport unit along the first direction.

7. The sheet feeding device according to claim 1, characterized in that: The sheet loading device includes at least two reversing mechanisms, the at least two reversing mechanisms are arranged at intervals along the first direction, the confluence conveying unit is provided with at least two confluence positions at intervals along the first direction, each of the confluence positions corresponds to one reversing mechanism, and the at least two reversing mechanisms are configured to synchronously acquire at least two sheets conveyed by the first conveying mechanism or the second conveying mechanism to the bottom of the corresponding reversing mechanism, and synchronously convey the acquired at least two sheets along the second direction to the corresponding confluence position, and release the acquired at least two sheets to the confluence conveying unit at the confluence position.

8. The sheet feeding device according to claim 1, characterized in that: The reversing mechanism includes two parallel conveyor belts and an adsorption unit extending along the second direction corresponding to each conveyor belt, the adsorption unit is configured to obtain the sheet conveyed to the bottom of the reversing mechanism and hold the obtained sheet on the conveying surface of the conveyor belt in a non-contact manner, and the conveyor belt is configured to convey the obtained sheet along the second direction to above the converging conveying unit.

9. The sheet feeding device according to claim 1, characterized in that: The first conveying mechanism is provided with a first detection component and a first material removal component. The first detection component is arranged on the conveying path of the first conveying mechanism and is configured to pre-detect the sheet conveyed by the first conveying mechanism. ， The first rejecting component is configured to reject the sheet that fails the pre-detection from the first conveying mechanism; And / or, the second conveying mechanism is provided with a second detection component and a second material removal component, the second detection component is arranged on the conveying path of the second conveying mechanism located in front of the reversing mechanism, and is configured to pre-detect the sheet conveyed on the second conveying mechanism. ， The second rejecting component is configured to reject the sheets that fail the pre-detection from the second conveying mechanism.

10. The sheet feeding device according to claim 1, characterized in that: The first conveying mechanism and the second conveying mechanism both include an accelerating conveying unit, a decelerating conveying unit and a uniform conveying unit sequentially arranged along the first direction, the accelerating conveying unit is configured to accelerate the conveyed sheet, the decelerating conveying unit is configured to decelerate the sheet conveyed by the accelerating conveying unit, and the uniform conveying unit is configured to uniformly convey the sheet conveyed by the decelerating conveying unit to the converging conveying unit.

11. The sheet feeding device according to claim 10, characterized in that: The accelerating conveying unit and the decelerating conveying unit adopt a horizontal conveying mode, and the uniform speed conveying unit adopts a horizontal conveying mode or an inclined conveying mode that is gradually lifted along a first direction.

12. The sheet feeding device according to any one of claims 1 to 11, characterized in that: The sheet loading device comprises at least two converging conveying units.

13. A sorting machine, characterized in that: The sorting machine comprises a sheet feeding device, a conveying device, a detection device and a receiving device as described in any one of claims 1 to 12, wherein: The sheet feeding device is configured to sequentially convey the sheets to the conveying device. The conveying device is configured to receive the sheet provided by the sheet feeding device and convey the sheet to the detection device and the receiving device. The detection device is configured to detect the sheet delivered to the detection area. The material receiving device is configured to receive the sheets conveyed to the material receiving area according to the detection result.

14. A screen printing machine, characterized in that: The screen printing machine comprises a sheet feeding device, a printing table, a printing device and a sheet output device as described in any one of claims 1 to 12, wherein: The printing platform is located between the sheet feeding device and the sheet output device, and the printing device is located above the printing platform. The sheet feeding device is configured to convey the sheet to be printed to the printing table. The printing device is configured to print on the sheet to be printed located on the printing table. The sheet output device is configured to output the printed sheet.

15. A laser processing machine, characterized in that: The laser processing machine comprises a sheet loading device, a laser processing device and a sheet unloading device as described in any one of claims 1 to 12, wherein: The sheet feeding device is configured to supply the sheet to be processed to the laser processing device. The laser processing device is at least configured to perform laser grooving or laser doping on the sheet to be processed. The sheet unloading device is configured to pick up the laser-processed sheets from the laser processing device and store the laser-processed sheets.

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