A self-tightening cartridge and substrate stacking apparatus, photovoltaic cell production apparatus

Abstract

The utility model provides a kind of self-tightening material box and substrate stacking device, photovoltaic cell production equipment, self-tightening material box includes material box bottom plate;At least two X direction material box baffle, hinged in material box bottom plate both sides in first direction;At least two Y direction material box baffle, installation in material box bottom plate both sides in second direction, and with X direction material box baffle enclose the material storage space of stacking material, material box bottom plate is equipped with several first ejection hole corresponding material storage space coverage range;First reset link, one end is connected in X direction material box baffle and material box bottom plate hinged place, the other end is equipped with the first ejection part matched with first ejection hole;First reset piece, it is connected between first reset link and material box bottom plate;When material storage space is vacant, first ejection part ejects first ejection hole under the action of first reset piece, and drives X direction material box baffle to turn outwards to expand material storage space;First ejection part is pressed into first ejection hole when stacking material in material storage space bottom, and drives X direction material box baffle to turn inwards to clamp material pile.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cell technology, and in particular to a self-tightening feed box and a substrate stacking device using the same. Background Technology

[0002] Silicon wafers (photovoltaic / solar cells) are the basic material for photovoltaic power generation. With the increase in production capacity, silicon wafers often need to be placed in stacking boxes and moved between various processes during the production of photovoltaic / solar cells.

[0003] Existing silicon wafer stacking boxes typically consist of a base plate for placing silicon wafers, side plates for clamping silicon wafers, and side rails that can be opened and closed to allow for loading and unloading of silicon wafers and to close the box to restrict and protect the silicon wafers. The base plate has a certain slope, and the silicon wafers supported on the inclined base plate are pressed tightly against the rails by their own gravity and clamped by the side plates on both sides, so that the silicon wafers remain stable during process flow and prevent damage or performance degradation of the silicon wafers due to friction, collision or contamination.

[0004] However, when loading and unloading silicon wafers in existing silicon wafer stacking boxes, it is necessary to drive the side flange linkage structure on both sides of the box through a driving mechanism such as a cylinder. This results in a complex structural layout and mechanism control of photovoltaic cell production equipment, as well as increased costs. Furthermore, the added driving mechanism leads to an increase in the size of the equipment, reducing structural compactness and space utilization. Utility Model Content

[0005] This utility model proposes a self-tightening material box and a substrate stacking device and photovoltaic cell production equipment using the same, in order to solve the technical problem that when loading and unloading silicon wafers in existing silicon wafer stacking boxes, the side guard structure of the box needs to be opened and closed by a drive mechanism, which causes the structural layout and mechanism control of photovoltaic cell production equipment to be complex and the cost to be increased.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides a self-tightening material box, comprising:

[0008] Material box bottom plate;

[0009] At least two X-direction box baffles are pivotally hinged to the top of the box base plate on both sides in the first direction;

[0010] At least two Y-direction material box baffles are installed on the top of the material box bottom plate on both sides in the second direction perpendicular to the first direction, and together with the X-direction material box baffles, they form a material hopper space for stacking materials. The material box bottom plate is provided with several first top-out holes within the coverage area of ​​the material hopper space.

[0011] The first reset link has one end connected to the hinge between the X-direction material box baffle and the material box bottom plate, and the other end of the first reset link is provided with a first ejection part that matches the first ejection hole.

[0012] The first reset component is connected between the first reset link and the bottom plate of the material box;

[0013] When the hopper space is empty, the first ejector can eject the first ejector hole under the action of the first reset member, and drive the X-direction hopper baffle to flip outward to expand the top opening of the hopper space.

[0014] When materials are stacked at the bottom of the hopper space, the first ejector part can be pressed into the first ejector hole under the action of gravity, and drive the X-direction material box baffle to flip inward to clamp the material stack.

[0015] Furthermore, the self-tightening cartridge also includes:

[0016] At least one first clearance structure is provided at the bottom of the material box base plate. The shape of the first clearance structure matches the shape of the first reset link and is connected along the first direction between the hinge of the corresponding X-direction material box baffle and the material box base plate and the first ejection hole.

[0017] Preferably, the first yielding structure includes:

[0018] The first connecting rod channel is located at the bottom of the material box base plate. One end of the channel is connected to the hinge between the corresponding X-direction material box baffle and the material box base plate. The other end of the first connecting rod channel extends along the first direction and is connected to the first ejection hole.

[0019] Preferably, the bottom plate of the material box is provided with a first spring slot corresponding to the first ejection hole, the first reset component is a first reset spring, one end of the first reset spring is connected to the first ejection part, and the other end of the first reset spring abuts against the first spring slot.

[0020] Preferably, the first ejector portion is a first ejector rod that is vertically connected to the other end of the first reset link, and one end of the first reset spring is sleeved on the first ejector rod.

[0021] Furthermore, the self-tightening cartridge also includes:

[0022] At least two X-axis adjusting members are movably mounted on both sides of the bottom plate of the material box in the first direction;

[0023] At least two Y-axis adjusting members are movably mounted on both sides of the material box bottom plate in the second direction, perpendicular to the second direction;

[0024] The X-axis material box baffle is rotatably mounted on the X-axis adjusting component, and the Y-axis material box baffle is mounted on the Y-axis adjusting component;

[0025] The first ejection hole is a strip-shaped hole extending along the first direction. The length of the strip-shaped hole matches the adjustment range of the X-direction material box baffle and the first reset linkage as the X-direction adjusting member moves along the first direction.

[0026] Preferably, the top surface of the bottom plate of the material box is provided with an X-axis guide groove and a Y-axis guide groove that respectively match the X-axis adjustment component and the Y-axis adjustment component. The first clearance structure is connected to the X-axis guide groove, and the X-axis adjustment component and the Y-axis adjustment component are respectively movably installed in the X-axis guide groove and the Y-axis guide groove.

[0027] Preferably, the X-axis adjusting member and the Y-axis adjusting member are respectively X-axis adjusting blocks and Y-axis adjusting blocks that match the X-axis guide groove and the Y-axis guide groove. The X-axis adjusting block and the Y-axis adjusting block are respectively provided with a first mounting groove and a second mounting groove that match the X-axis material box baffle and the Y-axis material box baffle. One end of the X-axis material box baffle is hinged in the first mounting groove and the Y-axis material box baffle is installed in the second mounting groove.

[0028] Furthermore, the self-tightening cartridge also includes:

[0029] The baffle is covered with a film, which covers the inner sides of the X-direction and Y-direction material box baffles facing the material storage space.

[0030] Preferably, the baffle film extends to the outer side of the X-direction material box baffle and the Y-direction material box baffle facing away from the material hopper space, and is fastened to the outer side by a pressing structure.

[0031] This utility model also provides a substrate stacking device, including a lifting device and the aforementioned self-tightening material box. The bottom plate of the material box is provided with a lifting clearance hole for the lifting device to pass through. The lifting device is used to drive the substrate pad to move up and down in the material hopper space. The substrate pad is used to stack a material pile formed by stacking several target substrates.

[0032] This utility model also provides a photovoltaic cell production equipment, including the above-mentioned substrate stacking device, wherein the target substrate is a photovoltaic cell.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The self-tightening material box provided by this utility model can utilize the gravity of the material to press down the first ejector and compress the first reset component when the material box is stacked (the substrate pad or material stack is in contact with the top surface of the material box bottom plate). This drives the first reset linkage to cause the X-direction material box baffle to self-tighten (flip inward) and shrink the material bin space, ensuring that the material stack is always clamped by the X-direction material box baffles on both sides during subsequent material loading (process flow). This achieves stable stacking of the material stack in the material bin space and avoids silicon wafer damage or performance degradation caused by friction, collision or contamination.

[0035] Meanwhile, the Y-direction material box baffles on both sides of the material box base plate in the second direction always maintain close contact with the material pile during the stacking process, and cooperate with the X-direction material box baffles on both sides of the material box base plate in the first direction to ensure that the stacking position of each material (such as the target substrate) in the material box space is accurate and controllable during the stacking process.

[0036] After unloading is completed (the substrate pad or material pile is separated from the bottom plate of the material box and the material box space is empty), the first reset component drives the first reset linkage to automatically open (flip outward) the X-direction material box baffle to expand the top opening of the material box space and reset the first ejection part, so as to facilitate the next batch of materials to be stacked into the material box space.

[0037] The self-tightening material box provided by this utility model eliminates the need for the cylinder or other driving mechanism used in traditional silicon wafer stacking boxes to drive the opening and closing of the side flange connecting rod structure on both sides of the box body. This simplifies the structural layout and mechanism control of photovoltaic cell production equipment and reduces equipment costs, while effectively improving the structural compactness and space utilization of the equipment. Attached Figure Description

[0038] To more clearly illustrate the technical solution proposed by this utility model, the present utility model will be described in detail below with reference to the embodiments and accompanying drawings. It should be understood that the embodiments and accompanying drawings described in the following detailed description are merely some embodiments of this utility model, and those skilled in the art can make changes to these drawings under the concept of this utility model.

[0039] Figure 1 A three-dimensional structural diagram of an embodiment of the self-tightening material box provided by this utility model when no target substrate is loaded;

[0040] Figure 2 for Figure 1 A three-dimensional structural diagram of the self-tightening hopper after loading the target substrate;

[0041] Figure 3 for Figure 1 A top view of the self-tightening material box in the diagram;

[0042] Figure 4 for Figure 1 A bottom view of the self-tightening material box structure;

[0043] Figure 5 for Figure 1 A schematic diagram of the main view structure when the self-tightening feed box is not fully loaded with the target substrate;

[0044] Figure 6 for Figure 5 A schematic diagram of the main structure of the self-tightening material box after the bottom plate of the material box is hidden;

[0045] Figure 7 for Figure 1 A side view of the structure when the self-tightening hopper is not fully loaded with the target substrate;

[0046] Figure 8 for Figure 1 A schematic diagram of the main structure when the self-tightening feed box is full of target substrates;

[0047] Figure 9 for Figure 8 A schematic diagram of the main structure of the self-tightening material box after the bottom plate of the material box is hidden;

[0048] Figure 10 for Figure 1 A side view of the structure when the self-tightening hopper is full of the target substrate;

[0049] Figure 11 for Figure 1 A three-dimensional structural diagram of the bottom plate of the self-tightening material box in the image;

[0050] Figure 12 for Figure 1 A top view of the bottom plate of the self-tightening material box in the diagram;

[0051] Figure 13 for Figure 1 A bottom view of the bottom plate of the self-tightening material box in the diagram;

[0052] Figure 14 for Figure 12 A side view of the bottom plate of the material box in the middle;

[0053] Figure 15 for Figure 12 A cross-sectional view of the bottom plate of the material box along the EE direction;

[0054] Figure 16 for Figure 12 A cross-sectional view of the bottom plate of the material box along the FF direction;

[0055] Figure 17 for Figure 1 A three-dimensional structural diagram of the X-axis adjustment component of the self-tightening material box;

[0056] Figure 18 for Figure 1 A three-dimensional structural diagram of the X-direction baffle of the self-tightening hopper in the middle;

[0057] Figure 19 for Figure 1 A three-dimensional structural diagram of the first hinge pin of the self-tightening material box;

[0058] Figure 20 for Figure 1A three-dimensional structural diagram of the first reset link of the self-tightening material box;

[0059] Figure 21 for Figure 1 A three-dimensional structural diagram of the first top part of the self-tightening material box;

[0060] Figure 22 for Figure 1 A three-dimensional structural diagram of the Y-axis adjustment component of the self-tightening material box;

[0061] Figure 23 for Figure 1 A three-dimensional structural diagram of the Y-direction baffle of the self-tightening hopper;

[0062] Figure 24 for Figure 1 A three-dimensional structural diagram of the baffle film covering the self-tightening material box;

[0063] Figure 25 for Figure 1 A three-dimensional structural diagram of the film platen of the self-tightening material box;

[0064] Figure 26 for Figure 1 A three-dimensional structural diagram of the baffle film covering the self-tightening material box.

[0065] The main markings in the attached figures are as follows:

[0066] 1. Material box bottom plate; 10. Inlay groove; 101. Observation hole; 102. Fixing groove; 11. First ejection hole; 12. First clearance structure; 121. First clearance through groove; 122. First connecting rod channel; 13. X-axis guide groove; 131. X-direction sliding groove; 14. Y-axis guide groove; 141. Y-direction sliding groove; 15. Lifting clearance hole; 16. Material box handle; 17. Box body positioning block; 171. Positioning groove; 18. X-direction adjusting screw; 181. X-direction screw; 19. Guide column; 191. Transition cone surface; 192. Column fixing hole; 2. X-direction material box baffle; 21. First hinge end; 22. First free end; 23. Connecting through hole; 24. First hinge shaft pin; 25. Film mounting groove; 251. Pressure plate fixing hole; 3 1. Y-axis material box baffle; 31. Second hinge end; 32. Second free end; 4. First reset connecting rod; 41. First ejection part; 411. Extension part; 412. Top cap part; 413. Mounting part; 414. Screw mounting hole; 42. Connecting part; 421. Connecting hole; 43. Top rod mounting hole; 5. First reset component; 6. X-axis adjusting component; 61. First mounting groove; 62. First hinge through hole; 63. First hinge blind hole; 64. First mounting hole; 65. First bolt hole; 651. X-axis adjusting bolt; 7. Y-axis adjusting component; 71. Second mounting groove; 72. Second bolt hole; 721. Y-axis adjusting bolt; 8. Baffle film; 81. Screw through hole; 82. Film pressure plate; 821. Screw through hole; 9. Substrate pad.

[0067] Other markings in the diagram are as follows:

[0068] A. Hopper space; B. Top opening; C. Adjustment scale; D. Target substrate; X. First direction; Y. Second direction; Z. Third direction. Detailed Implementation

[0069] Please refer to the following: Figure 1-26 The self-tightening material box provided by this utility model includes:

[0070] A material box base plate 1; at least two X-direction material box baffles 2, hinged rotatably to the top of the material box base plate 1 on both sides in the first direction X; at least two Y-direction material box baffles 3, installed on the top of the material box base plate 1 on both sides in the second direction Y perpendicular to the first direction X, and together with the X-direction material box baffles 2, forming a material storage space A for stacking materials, with a plurality of first ejection holes 11 provided in the area covered by the material storage space A; a first reset link 4, one end of which is connected to the hinge between the X-direction material box baffle 2 and the material box base plate 1, and the other end of the first reset link 4 relative to the hinge between the X-direction material box baffle 2 and the material box base plate 1 is provided with a first ejection part 41 that matches the first ejection hole 11; and a first reset member 5, connected between the first reset link 4 and the material box base plate 1.

[0071] When the first ejector part 41 is empty in the hopper space A (or the part of the hopper space A located at the top of the bottom plate 1 of the hopper is empty), it can eject the first ejector hole 11 under the action of the first reset member 5 (such as the spring in its natural extension state), and drive the first reset link 4 to swing upward, thereby causing the X-direction hopper baffle 2 to flip outward relative to the bottom plate 1 around the hinge point of the X-direction hopper baffle 2 and the bottom plate 1 of the hopper, so that the X-direction hopper baffles 2 on both sides of the bottom plate 1 in the first direction X flip back and forth in the first direction X and expand the top opening B of the hopper space A until the first reset member 5 returns to the initial state and limits the degree of expansion of the top opening B. At this time, the top opening B of the hopper space A opens into a trumpet shape, which facilitates the subsequent transfer of materials from other stations or devices and into the hopper space A for stacking through the opened top opening B.

[0072] When the first ejector part 41 is stacking materials at the bottom of the hopper space A, it can be pressed into the first ejector hole 11 under the action of the material's gravity. At the same time, it compresses the first reset member 5 and drives the first reset link 4 to swing downward, thereby causing the X-direction material box baffle 2 to flip inward relative to the material box bottom plate 1 around the hinge point of the X-direction material box baffle 2 and the material box bottom plate 1. This causes the X-direction material box baffles 2 on both sides of the material box bottom plate 1 hinged in the first direction X to flip in opposite directions along the first direction X and shrink the hopper space A until the X-direction material box baffle 2 clamps the material pile.

[0073] Meanwhile, the Y-direction material box baffles 3 on both sides of the material box base plate 1 in the second direction Y always maintain close contact with the material pile during the stacking process, and cooperate with the X-direction material box baffles 2 on both sides of the material box base plate 1 in the first direction X to ensure that the stacking position of each material (such as the target substrate D) in the material box space A is accurate during the stacking process.

[0074] Similarly, the unloading process of the self-tightening hopper in the substrate stacking device is the reverse of the loading process, and will not be described in detail here.

[0075] The self-tightening hopper provided by this utility model can realize that when the hopper is stacked (the substrate pad 9 or the material stack is in contact with the top surface of the hopper bottom plate 1), the first ejector 41 is pressed into the first ejector hole 11 by the gravity of the material, and the first reset member 5 is compressed at the same time, thereby driving the first reset link 4 to drive the X-direction hopper baffle 2 to flip inward, so that the X-direction hopper baffle 2 self-tightens. The hopper space A of the self-tightening hopper can realize automatic contraction by the gravity of the material, ensuring that the material stack is always clamped by the X-direction hopper baffle 2 during the loading process, so that it is stably stacked in the hopper space A.

[0076] After the self-tightening hopper completes unloading (the substrate pad 9 or the material pile is separated from the hopper bottom plate 1, and the hopper space A is empty), the first reset member 5 extends and resets, driving the first reset link 4 to flip the X-direction hopper baffle 2 outward. At the same time, the first ejector part 41 resets to extend out of the first ejector hole 11, thereby automatically opening the X-direction hopper baffle 2 to expand the top opening B of the hopper space A. After the self-tightening hopper unloads material from the hopper space A, the first reset member 5 can automatically expand the space, making it convenient for the next batch of material to continue to be stacked in the hopper space A.

[0077] Please refer to the following: Figure 1-10 In this embodiment, the first direction X is preferably a first horizontal direction, the second direction Y is preferably a second horizontal direction perpendicular to the first horizontal direction (first direction X), the plane on which the bottom plate 1 of the material box is located is preferably parallel to the first horizontal direction (first direction X) and the second horizontal direction (second direction Y), and the height direction of the material storage space A is a third direction Z that is simultaneously perpendicular to the first horizontal direction (first direction X) and the second horizontal direction (second direction Y), and this third direction Z is parallel to the vertical direction.

[0078] Please refer to the following: Figure 1-10 18-20, In this embodiment, the first ejection hole 11 is positioned directly opposite the X-direction material box baffle 2 in the first direction X, and the self-tightening material box further includes:

[0079] At least one first clearance structure 12 is provided at the bottom of the material box bottom plate 1. The shape of the first clearance structure 12 matches the shape of the first reset link 4 and is connected along the first direction X between the hinge of the corresponding X-direction material box baffle 2 and the material box bottom plate 1 and the first ejection hole 11, so as to provide structural clearance for the first reset link 4 to flip up and down relative to the material box bottom plate 1.

[0080] When the first ejector 41 stacks materials at the bottom of the hopper space A and is pressed into the first ejector hole 11 under the action of the material's gravity, the first reset link 4 swings downwards through the clearance of the first clearance structure 12 and partially extends out of the bottom of the hopper bottom plate 1, thereby causing the X-direction hopper baffle 2 to flip inwards relative to the hopper bottom plate 1 around the hinge point between the X-direction hopper baffle 2 and the hopper bottom plate 1. Figure 2 , 8 As shown in -10;

[0081] When the first ejector 41 is vacant in the hopper space A (the portion of hopper space A located at the top of the hopper bottom plate 1 is vacant) and ejects from the first ejector hole 11 under the action of the first reset member 5, the first reset link 4 swings upward through the clearance of the first clearance structure 12 and fully extends into the bottom of the hopper bottom plate 1, causing the X-direction hopper baffle 2 to flip outward relative to the hopper bottom plate 1 around the hinge point between the X-direction hopper baffle 2 and the hopper bottom plate 1. Figure 1 , 5 As shown in -7.

[0082] Please refer to the following: Figure 4 , 13 15. As a preferred embodiment of this invention, the first clearance structure 12 includes:

[0083] The first clearance groove 121 is provided at the bottom of the material box bottom plate 1 at the hinge point between the material box baffle 2 and the material box bottom plate 1 in the X direction; the first connecting rod channel 122 is provided at the bottom of the material box bottom plate 1, one end of the first connecting rod channel 122 is connected to the first clearance groove 121 at the hinge point between the material box baffle 2 and the material box bottom plate 1 in the X direction, and the other end of the first connecting rod channel 122 extends along the first direction X and is connected to the first ejection hole 11.

[0084] Please refer to the following: Figure 1-10 In preferred embodiments of this example, one end of the first reset link 4 is provided with a connecting portion 42 extending along the second direction Y. The connecting portion 42 is provided with at least one connecting hole 421 extending along the third direction Z. The main body of the first reset link 4 extends along the first direction X. The end of the first hinge end 21 of the X-direction material box baffle 2 is provided with a screw through hole (not shown in the figure) that matches the connecting hole 421 and extends along the axial direction (i.e., the third direction Z) of the first reset link 4. The X-direction material box baffle 2 is fastened to the connecting portion 42 of the first reset link 4 by connecting screws passing through the corresponding screw through holes and connecting holes 421.

[0085] Please refer to the following: Figure 1-13 16. As a preferred embodiment of this example, the self-tightening box includes at least one pair of X-direction box baffles 2. Each pair of X-direction box baffles 2 includes two X-direction box baffles 2 facing each other in the first direction X. The first connecting rod channel 122 extends along the first direction X between the hinge points of the pair of X-direction box baffles 2 and the corresponding box bottom plate 1, and the width of the first connecting rod channel 122 (length in the second direction Y) matches the sum of the widths of the pair of first reset connecting rods 4.

[0086] The first reset link 4 connected to one of the X-direction material box baffles 2 is arranged adjacent (side by side) to the first reset link 4 connected to the other X-direction material box baffle 2 in the second direction Y. The pair of first reset links 4 connected to the pair of X-direction material box baffles 2 are arranged alternately and side by side in the same first link channel 122. The same first link channel 122 is used to make structural clearance for the up and down flipping action of the pair of first reset links 4.

[0087] In other embodiments of this example, the first clearance structure 12 may also be an open first connecting rod through slot (not shown in the figure) that penetrates both ends of the bottom plate 1 in the third direction Z and connects the first ejection hole 11 and the hinge between the X-direction baffle 2 and the bottom plate 1, instead of the semi-closed first connecting rod channel 122 that does not penetrate the bottom plate 1.

[0088] In this embodiment, the bottom plate 1 of the material box is provided with a first spring slot (not shown in the figure) corresponding to the first ejection hole 11. The first reset member 5 is a first reset spring. One end of the first reset spring (first reset member 5) is connected to the first ejection part 41, and the other end of the first reset spring (first reset member 5) abuts against the first spring slot.

[0089] In other embodiments, the first reset member 5 may also be an elastic reset member such as a compression spring or a torsion spring.

[0090] Please refer to the following: Figure 1-2 5-10, 18, as a preferred embodiment of this embodiment, one end of the X-direction material box baffle 2 is a first hinge end 21 hinged to the material box bottom plate 1, and the other end of the first ejector part 41 relative to the hinge point between the X-direction material box baffle 2 and the material box bottom plate 1 (i.e. relative to the first hinge end 21) is a first free end 22 that can be rotated up and down around the first hinge end 21.

[0091] Please refer to the following: Figure 1-10 20-21. As a more preferred embodiment of this example, the first reset link 4 has a push rod mounting hole 43 perpendicular to the axial direction of the first reset link 4 at the other end (i.e., the first free end 22) of the hinge point between the X-direction material box baffle 2 and the material box bottom plate 1. The first ejection part 41 is the first ejection rod. The first ejection rod (first ejection part 41) includes: an extension part 411, a top cap part 412 provided at one axial end of the extension part 411, and a mounting part 413 provided at the other axial end of the extension part 411 opposite to the top cap part 412. The end of the mounting part 413 is provided with a screw mounting hole 414 that matches the push rod mounting hole 43.

[0092] The mounting portion 413 of the first ejector rod (first ejector part 41) passes through the corresponding ejector rod mounting hole 43 and screw mounting hole 414 via connecting screws, and is vertically connected (i.e. extends along the third direction Z) to the ejector rod mounting hole 43 at the other end (i.e., the first free end 22) of the hinge point between the first reset link 4 and the X-direction material box baffle 2 and the material box bottom plate 1. One end of the first reset spring is sleeved on the first ejector rod, and the other end of the first reset spring abuts against the first spring slot. The top cap 412 is used to contact the substrate pad 9 or the material pile. The top cap 412 is driven by the weight of the substrate pad 9 and the material pile it carries, or directly by the weight of the material pile, to drive the top cap 412 to push the first ejector rod (first ejector part 41) into the first ejector hole 11.

[0093] In other embodiments of this example (not shown in the figure), the first ejector part 41 may also be a first ejector rod that is inclinedly connected to the other end (i.e. the first free end 22) of the hinge point between the first reset link 4 and the X-direction material box baffle 2 and the material box bottom plate 1.

[0094] Please refer to the following: Figure 1-10 In this embodiment, the self-tightening material box further includes:

[0095] At least two X-direction adjusting members 6 are movably mounted on both sides of the material box bottom plate 1 in the first direction X; at least two Y-direction adjusting members 7 are movably mounted on both sides of the material box bottom plate 1 in the second direction Y, perpendicular to the second direction Y.

[0096] The X-direction material box baffle 2 is rotatably mounted on the X-direction adjusting member 6, and the Y-direction material box baffle 3 is mounted on the Y-direction adjusting member 7; the first ejection hole 11 is a strip-shaped hole extending along the first direction X, and the length of the strip-shaped hole (first ejection hole 11) matches the adjustment range of the X-direction material box baffle 2 and the first reset connecting rod 4 as the X-direction adjusting member 6 moves along the first direction X.

[0097] By reciprocating along the first direction X and the second direction Y, the distance between the X-axis adjusting member 6 and the Y-axis adjusting member 7 on both sides of the flexible self-tightening material box can be adjusted, thereby adjusting the size of the material hopper space A in the first direction X and the second direction Y, so that the self-tightening material box can be adapted to the material pile composed of target substrates D of various specifications, sizes and models, thereby improving the adaptability and versatility of the self-tightening material box to various types of target substrates D.

[0098] Please refer to the following: Figure 1-4 11-16, as a preferred embodiment of this example, the top surface of the material box bottom plate 1 is provided with an X-axis guide groove 13 and a Y-axis guide groove 14 respectively matching the X-axis adjusting member 6 and the Y-axis adjusting member 7. The first clearance structure 12 is connected to the X-axis guide groove 13. The X-axis adjusting member 6 and the Y-axis adjusting member 7 are respectively movably installed in the X-axis guide groove 13 and the Y-axis guide groove 14 to achieve movable guidance.

[0099] Please refer to the following: Figure 1-10 17, 22, as preferred embodiments of this example, the X-axis adjusting member 6 and the Y-axis adjusting member 7 are respectively X-axis adjusting blocks and Y-axis adjusting blocks that match the X-axis guide groove 13 and the Y-axis guide groove 14. The X-axis adjusting block and the Y-axis adjusting block are respectively provided with at least one first mounting groove 61 and a second mounting groove 71 that match the X-axis material box baffle 2 and the Y-axis material box baffle 3. The X-axis material box baffle 2 is hinged to one end of the material box bottom plate 1 (i.e., the first free end 22) and is hinged in the first mounting groove 61 in a flip-out manner. The Y-axis material box baffle 3 is installed in the second mounting groove 71.

[0100] Please refer to the following: Figure 1-4 11-13, 16, as a preferred embodiment of this example, the bottom plate 1 of the material box is provided with an X-axis slide groove 131 and a Y-axis slide groove 141 respectively at the bottom surface of the X-axis guide groove 13 and the Y-axis guide groove 14. The X-axis adjusting block (X-axis adjusting component 6) and the Y-axis adjusting block (Y-axis adjusting component 7) are respectively provided with a first bolt hole 65 and a second bolt hole 72 that match the X-axis slide groove 131 and the Y-axis slide groove 141. The X-axis adjusting block (X-axis adjusting component 6) and the Y-axis adjusting block (Y-axis adjusting component 7) are respectively connected to... The X-direction adjusting bolt 651 passing through the first bolt hole 65 and the Y-direction adjusting bolt 721 passing through the second bolt hole 72 cooperate with the X-direction sliding groove 131 and the Y-direction sliding groove 141. By tightening or loosening the X-direction adjusting bolt 651 and the Y-direction adjusting bolt 721, the sliding positions of the X-direction adjusting block and the Y-direction adjusting block can be unlocked or locked, so that the X-direction adjusting block and the Y-direction adjusting block can move along the first direction X and the second direction Y respectively and can be locked in their sliding positions and installed in the X-axis guide groove 13 and the Y-axis guide groove 14.

[0101] Please refer to the following: Figure 1-3 In the preferred embodiment of this example, the bottom plate 1 of the material box is provided with an X-axis adjusting screw 18 and a Y-axis adjusting screw (not shown in the figure) at the X-axis guide groove 13 and the Y-axis guide groove 14, respectively. The X-axis adjusting screw 18 includes an X-axis lead screw 181 extending along the first direction X and mounted on the bottom plate 1 of the material box, and an X-axis moving member (not shown in the figure) movably mounted on the X-axis lead screw 181. The Y-axis adjusting screw includes a Y-axis lead screw (not shown in the figure) extending along the second direction Y and mounted on the bottom plate 1 of the material box, and a Y-axis moving member (not shown in the figure). The X-axis adjusting block and the Y-axis adjusting block are respectively provided with a first mounting hole 64 and a second mounting hole (not shown in the figure) matching the X-axis moving member and the Y-axis moving member. The X-axis adjusting block and the Y-axis adjusting block are respectively mounted on the X-axis moving member and the Y-axis moving member through the first mounting hole 64 and the second mounting hole.

[0102] By rotating the X-axis adjusting screw 18 and the Y-axis adjusting screw 181 and Y-axis screw respectively, the X-axis moving parts and the Y-axis moving parts can be driven to reciprocate linearly along the X-axis screw 181 and the Y-axis screw respectively, thereby driving the X-axis adjusting block and the Y-axis adjusting block to reciprocate linearly along the X-axis guide groove 13 (parallel to the first direction X) and the Y-axis guide groove 14 (parallel to the second direction Y), so as to quickly realize the size adjustment of the hopper space A in the first direction X and the second direction Y.

[0103] Please refer to the following: Figure 1-311-12. As a preferred embodiment of this example, the bottom plate 1 of the material box is provided with an adjustment scale C that matches the extension direction and length of the X-axis guide groove 13 and the Y-axis guide groove 14, so that the operator can quickly adjust the distance between the X-axis adjustment member 6 and the Y-axis adjustment member 7 on both sides of the self-tightening material box with the adjustment scale C as a reference.

[0104] Please refer to the following: Figure 1-3 7, 10-12, 17-19, as a preferred embodiment of this example, the X-direction adjusting member 6 is an elongated X-direction adjusting block extending along the second direction Y (i.e., perpendicular to the direction of movement of the X-direction adjusting member 6 along the first direction X). The X-direction adjusting block (X-direction adjusting member 6) has a pair of first mounting grooves 61 spaced apart along the second direction Y. The X-direction adjusting block (X-direction adjusting member 6) has first hinges extending along the second direction Y through the X-direction adjusting block (X-direction adjusting member 6) at both ends corresponding to the first mounting grooves 61 on the second direction Y. The X-direction adjustment block (X-direction adjustment member 6) is not penetrated by the through hole 62 and the first hinge blind hole 63. The hinge point (i.e. the first hinge end 21) between the X-direction material box baffle 2 and the material box bottom plate 1 is provided with a connecting through hole 23 that matches the first hinge through hole 62 and the first hinge blind hole 63 and penetrates the X-direction material box baffle 2 along the second direction Y. The first hinge end 21 of the X-direction material box baffle 2 is hinged to the corresponding first mounting groove 61 of the material box bottom plate 1 by the first hinge pin 24 that passes through the corresponding first hinge through hole 62, connecting through hole 23 and first hinge blind hole 63 along the second direction Y.

[0105] As one embodiment of this example (not shown in the figure), at least two Y-direction material box baffles 3 are hinged to the corresponding Y-direction adjusting members 7 on both sides of the top of the material box bottom plate 1 in the second direction Y. The material box bottom plate 1 is provided with a plurality of second ejection holes (not shown in the figure) within the coverage area of ​​the material hopper space A.

[0106] The self-tightening cartridge also includes:

[0107] The second reset link (not shown in the figure) has one end connected to the hinge between the Y-direction material box baffle and the material box bottom plate 1, and the other end of the second reset link relative to the hinge between the Y-direction material box baffle and the material box bottom plate 1 is provided with a second ejection part (not shown in the figure) that matches the second ejection hole; the second reset member (not shown in the figure) is connected between the second reset link and the material box bottom plate 1.

[0108] When the second ejector is empty in the hopper space A (or the part of the hopper space A located at the top of the bottom plate 1 of the hopper is empty), it can eject the second ejector hole under the action of the second reset member, and drive the second reset link to swing upward, thereby causing the Y-direction hopper baffle to flip outward relative to the bottom plate 1 around the hinge of the Y-direction hopper baffle and the bottom plate 1. At the same time as the X-direction hopper baffle 2 flips outward relative to the bottom plate 1 and expands the hopper space A along the first direction X, the Y-direction hopper baffles 3 on both sides of the bottom plate 1 in the second direction Y flip back and forth along the second direction Y and expand the top opening B of the hopper space A until the second reset member returns to the initial state and limits the expansion degree of the top opening B. Thus, in conjunction with the X-direction hopper baffle 2 expanding along the first direction X, the top opening B of the hopper space A is expanded in the second direction Y, making it more convenient to put materials into the hopper space A for stacking through the opened top opening B.

[0109] When the second ejector is stacked at the bottom of the hopper space A, it can be pressed into the second ejector hole under the action of the material's gravity, and drive the second reset link to swing downward. This causes the Y-direction hopper baffle to rotate inward relative to the hopper bottom plate 1 around the hinge point between the Y-direction hopper baffle and the hopper bottom plate 1. This causes the Y-direction hopper baffles 3 on both sides of the hopper bottom plate 1, which are hinged to the hopper bottom plate 1 in the second direction Y, to rotate towards each other in the second direction Y and shrink the hopper space A until the Y-direction hopper baffles 3 clamp the material pile. This, in conjunction with the X-direction hopper baffle 2, shrinks the hopper space A in the second direction Y along the first direction X, making the material pile more firmly clamped during the process of transferring the material pile formed inside the self-tightening hopper.

[0110] In this embodiment (not shown in the figure), the second ejection hole is positioned directly opposite the Y-direction material box baffle 3 in the second direction Y, and the self-tightening material box further includes:

[0111] At least one second clearance structure is provided at the bottom of the material box base plate 1. The shape of the second clearance structure matches the shape of the second reset link and is connected along the second direction Y between the hinge point of the corresponding Y-direction material box baffle 3 and the material box base plate 1 and the second ejection hole, so as to provide structural clearance for the up and down flipping of the second reset link relative to the material box base plate 1.

[0112] The second ejector, the second reset link, and the second clearance structure work together to achieve the principle that the Y-direction box baffle 3 flips outward relative to the box bottom plate 1 around the hinge point between the Y-direction box baffle 3 and the box bottom plate 1. This principle is the same as the principle that the first ejector 41, the first reset link 4, and the first clearance structure 12 work together to achieve the principle that the X-direction box baffle 2 flips outward relative to the box bottom plate 1 around the hinge point between the X-direction box baffle 2 and the box bottom plate 1. Therefore, it will not be described again here.

[0113] As a preferred embodiment of this invention (not shown in the figure), the second clearance structure includes:

[0114] The second clearance groove (not shown in the figure) is located at the bottom of the material box base plate 1 at the hinge point between the X-direction material box baffle 2 and the material box base plate 1; the second connecting rod channel (not shown in the figure) is located at the bottom of the material box base plate 1, one end of which is connected to the second clearance groove at the hinge point between the Y-direction material box baffle 3 and the material box base plate 1, and the other end of the second connecting rod channel extends along the second direction Y and is connected to the second ejection hole.

[0115] In this embodiment (not shown in the figure), the bottom plate 1 of the material box is provided with a second spring slot corresponding to the second ejection hole, and the second reset member is a second reset spring. One end of the second reset spring is connected to the second ejection part, and the other end of the second reset spring abuts against the second spring slot.

[0116] Please see Figure 23 In a preferred embodiment of this invention, one end of the Y-direction material box baffle 3 is a second hinge end 31 hinged to the material box bottom plate 1, and the other end of the second ejector portion relative to the hinge point between the Y-direction material box baffle 3 and the material box bottom plate 1 (i.e. relative to the second hinge end 31) is a second free end 32 that can be rotated up and down around the second hinge end 31.

[0117] As a preferred embodiment of this invention (not shown in the figure), the second ejector part is a second ejector rod that is vertically connected to the other end (i.e., the second free end 32) of the hinge point between the second reset link and the Y-direction material box baffle 3 and the material box bottom plate 1. One end of the second reset spring is sleeved on the second ejector rod, and the other end of the second reset spring abuts against the second spring slot.

[0118] In other embodiments of this example (not shown in the figure), the second ejector part may also be a second ejector rod that is inclinedly connected to the other end (i.e., the second free end 32) of the hinge point between the second reset link and the Y-direction material box baffle 3 and the material box bottom plate 1.

[0119] As a preferred embodiment of this example (not shown in the figure), one end of the Y-direction material box baffle 3 is a second hinge end 31 hinged to the material box bottom plate 1, and the other end of the second ejector portion relative to the hinge point between the Y-direction material box baffle 3 and the material box bottom plate 1 (i.e. relative to the second hinge end 31) is a second free end 32 that can be flipped up and down around the second hinge end 31.

[0120] As a more advanced embodiment of this invention (not shown in the figure), the Y-direction material box baffle 3 is hinged to one end of the material box bottom plate 1 (i.e., the second hinge end 31) and is rotatably hinged to the second mounting groove 71.

[0121] As a preferred embodiment of this invention (not shown in the figure), the Y-axis adjusting member 7 is an elongated Y-axis adjusting block extending along the first direction X (i.e., perpendicular to the moving direction of the Y-axis adjusting member 7 along the second direction Y). The Y-axis adjusting block (Y-axis adjusting member 7) is provided with at least one second mounting groove 71 extending along the first direction X. The Y-axis adjusting block (Y-axis adjusting member 7) has a second hinged through hole (not shown in the figure) extending through the Y-axis adjusting block along the first direction X and a non-through Y-axis adjusting hole at each of the two ends corresponding to the second mounting groove 71 on the first direction X. The second hinge blind hole of the segment block (not shown in the figure), the hinge point (i.e. the second hinge end 31) of the Y-direction material box baffle 3 and the material box bottom plate 1 is provided with a matching second hinge through hole and second hinge blind hole and a second connecting through hole 23 (not shown in the figure) that passes through the Y-direction material box baffle 3 along the first direction X. The second hinge end 31 of the Y-direction material box baffle 3 is hinged to the corresponding second mounting groove 71 of the material box bottom plate 1 by a second hinge pin (not shown in the figure) that passes through the corresponding second hinge through hole, second connecting through hole 23 and second hinge blind hole along the first direction X.

[0122] As another embodiment of this example (not shown in the figure), the Y-direction adjusting block (Y-direction adjusting member 7) is provided with at least two second mounting grooves 71 extending along the first direction X at intervals in the second direction Y. Correspondingly, the second hinge ends 31 of at least two Y-direction material box baffles 3 are hinged in the corresponding second mounting grooves 71 of the material box bottom plate 1, so as to further enhance the force of the self-tightening material box to shrink the material box space A in the second direction Y and clamp and stabilize the material pile.

[0123] Please refer to the following: Figure 1-2 In this embodiment, the self-tightening material box further includes: 5-10, 24.

[0124] The baffle film 8 covers the inner surfaces of the X-direction material box baffle 2 and the Y-direction material box baffle 3 facing the material hopper space A, and is used to prevent contamination caused by material (such as solar cells and silicon wafers) coming into contact with the X-direction material box baffle 2 and the Y-direction material box baffle 3.

[0125] Please refer to the following: Figure 1-2 5-10, 24, as a preferred embodiment of this example, the baffle film 8 extends from the inner side of the X-direction material box baffle 2 and the Y-direction material box baffle 3 toward the material hopper space A to the outer side of the X-direction material box baffle 2 and the Y-direction material box baffle 3 away from the material hopper space A, and is fastened to the outer side by a pressing structure.

[0126] Please refer to the following: Figure 1-25-10, 18, 22-25, as a preferred embodiment of this example, the outer side of the X-direction material box baffle 2 and the Y-direction material box baffle 3 facing away from the material hopper space A is provided with a film mounting groove 25. The bottom surface of the film mounting groove 25 is provided with a plurality of pressure plate fixing holes 251. The baffle film 8 is provided with screw through holes 81 that match the pressure plate fixing holes 251. The self-tightening material box also includes: a film pressure plate 82, which is provided with screw through holes 821 that match the pressure plate fixing holes 251 and the screw through holes 81.

[0127] The baffle film 8 covers the inner and outer sides of the X-direction material box baffle 2 and the Y-direction material box baffle 3 facing and away from the material hopper space A. The film pressure plate 82 presses the baffle film 8 tightly and fixes it to the bottom surface of the film mounting groove 25 by passing the connecting screws (not shown in the figure) through the corresponding screw holes 821, screw through holes 81 and pressure plate fixing holes 251.

[0128] Please refer to the following: Figure 5-10 In this embodiment, a gap is formed between the inner side of the X-direction material box baffle 2 and the Y-direction material box baffle 3 facing the material hopper space A and the baffle film 8, which is used to buffer the compression of the target substrate D by the X-direction material box baffle 2 and the Y-direction material box baffle 3.

[0129] This utility model also provides a substrate stacking device, including a lifting device (not shown in the figure) and the aforementioned self-tightening material box. The bottom plate 1 of the material box is provided with a lifting clearance hole 15 for the lifting device to pass through. The lifting device is used to drive the substrate pad 9 to move vertically up and down in the third direction Z within the material hopper space A. The substrate pad 9 is used to stack a material pile (not shown in the figure) formed by stacking several target substrates D.

[0130] In this embodiment, the lifting device can be a linear lifting device such as an electric cylinder, hydraulic cylinder, or pneumatic cylinder. The substrate pad 9 is connected to the end of the output rod of the linear lifting device, which extends vertically upward and passes through the lifting clearance hole 15 into the material bin space A. The bottom surface of the material box base plate 1 facing the material bin space A (i.e., the top surface of the material box base plate 1) is provided with a column fixing hole 192. The guide column 19 extending upward along the third direction Z is installed in the column fixing hole 192. The top of the guide column 19 forms a transition cone surface 191. The bottom of the substrate pad 9 is provided with a positioning hole whose shape matches that of the guide column 19 and its transition cone surface 191. When the lifting device drives the substrate pad 9 to descend vertically along the third direction Z until it contacts the material box base plate 1, the positioning hole and the guide column 19 and its transition cone surface 191 are positioned and engaged, so that the substrate pad 9 is accurately aligned and supported on the material box base plate 1.

[0131] The working steps and principle of the self-tightening material box provided by this utility model applied to the substrate stacking device are as follows:

[0132] S1: When the self-tightening material box is in an empty initial state, the substrate pad 9 is suspended in the material hopper space A under the lifting action of the lifting device, and is located at the upper end of the material hopper space A in the third direction Z. At this time, the substrate pad 9 is separated from the bottom plate 1 of the material box. Under the resetting action of the first resetting member 5, the X-direction material box baffle 2 is flipped outward and the top opening B of the material hopper space A is expanded to allow the target substrate D (such as a battery cell or silicon wafer) to enter. The resetting action of the first resetting member 5 at the same time causes the first resetting link 4 to keep the first ejection part 41 ejected from the first ejection hole 11.

[0133] S2: When the target substrate D is loaded into the hopper space A of the self-tightening hopper from the conveyor line or carrier by the transfer device or manually, as the target substrate D is placed one by one and stacked on the substrate pad 9 to form a material pile, the lifting device drives the substrate pad 9 to move the material pile vertically downward layer by layer along the third direction Z in units of the thickness of the target substrate D, keeping the top height of the material pile within the hopper space A and located at the upper end of the hopper space A in the third direction Z, so as to continuously load the target substrate D into the hopper space A;

[0134] S3: When the material pile is full in the hopper space A, the lifting device just drives the substrate pad 9 to contact and support the top surface of the bottom plate 1 of the material box. At this time, under the gravity of the material pile and the substrate pad 9, the first ejection part 41 is pressed into the first ejection hole 11 and the first reset part 5 (such as the first reset spring) is compressed. At the same time, the first reset link 4 swings in the opposite direction and drives the X-direction material box baffle 2 to flip inward and shrink the hopper space A until the X-direction material box baffle 2 clamps the material pile to ensure that the material pile is stable during transportation.

[0135] S4: When the material transfer device unloads the material pile from the hopper space A and removes it from the self-tightening hopper, the lifting device lifts the substrate pad 9 back up to be suspended in the hopper space A and located at the upper end of the hopper space A in the third direction Z. At this time, the substrate pad 9 and the hopper bottom plate 1 return to the separated state. Under the reset extension action of the first reset member 5 (such as the first reset spring), the X-direction hopper baffle 2 flips outward and expands the top opening B of the hopper space A to allow the next batch of target substrates D (such as solar cells, silicon wafers) to enter. The reset action of the first reset member 5 at the same time causes the first reset link 4 to push the first ejection part 41 out of the first ejection hole 11 again and keep it extending out of the first ejection hole 11. At this time, the self-tightening hopper completes the reset to the empty initial state, ready for the next round of material stacking.

[0136] In other embodiments, the self-tightening material box provided by this utility model can also be used independently without the lifting device and the substrate pad 9. The self-tightening function can be achieved simply by stacking the material directly on the top surface of the bottom plate 1 of the material box.

[0137] This utility model also provides a photovoltaic cell production equipment, including a conveyor line (not shown in the figure) and a transfer device (not shown in the figure), and also includes the aforementioned substrate stacking device. The target substrate D is a photovoltaic cell (silicon wafer), and the transfer device is used to transfer the photovoltaic cell (target substrate D) between the conveyor line and the substrate stacking device.

[0138] Please refer to the following: Figure 1-10 In this embodiment, the bottom plate 1 of the material box is provided with material box handles 16 at both ends in the first direction X and / or the second direction Y. The material box handles 16 are preferably angled handles, which are used for the transfer device to pick up or for manual gripping, so as to facilitate the handling and transfer of the self-tightening material box.

[0139] Please refer to the following: Figure 1-4 7, 10-14, In this embodiment, the bottom plate 1 of the material box is provided with several inlay grooves 10 at both ends in the first direction X and / or the second direction Y. The inlay grooves 10 are inlaid with box positioning blocks 17, and the box positioning blocks 17 are provided with positioning grooves 171, so that the corresponding equipment in the subsequent process can position and cooperate with the self-tightening material box through the limiting block (not shown in the figure) that matches the positioning groove 171.

[0140] Please refer to the following: Figure 3-4 In this embodiment, the bottom plate 1 of the material box is provided with an observation hole 101, which is used for the operator to observe through the observation hole 101 whether the subsequent process equipment of the photovoltaic cell production equipment and the self-tightening material box are properly matched.

[0141] In this embodiment, a position sensor is provided on the bottom surface of the material box base plate 1 to sense whether the self-tightening material box and the subsequent process equipment of the photovoltaic cell production equipment are properly installed and matched.

[0142] Please see Figure 4 In this embodiment, the bottom surface of the material box base plate 1 is provided with a fixing groove 102, and threaded holes are provided on both sides of the fixing groove 102. The fixing groove 102 is used to fix and place the control chip for controlling the position sensor. The control chip is provided with through holes that match the threaded holes on both sides of the fixing groove 102. The control chip is fastened and installed in the fixing groove 102 by passing the connecting screw through the through holes on the control chip and the threaded holes on both sides of the fixing groove 102.

[0143] As a preferred embodiment of this example (not shown in the figure), the equipment corresponding to the subsequent process is equipped with a limit cylinder (not shown in the figure). The limit cylinder is used to drive the above-mentioned limit block to extend and retract to realize the engagement and disengagement of the limit block with the guide groove, so as to position the self-tightening material box.

[0144] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Those skilled in the art should understand that any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A self-tightening material box, characterized in that, include: Material box bottom plate (1); At least two X-direction box baffles (2) are pivotally hinged to the top of the box base plate (1) on both sides in the first direction (X); At least two Y-direction box baffles (3) are installed on the top of the box bottom plate (1) on both sides of the second direction (Y) perpendicular to the first direction (X), and together with the X-direction box baffle (2), they form a hopper space (A) for stacking materials. The box bottom plate (1) is provided with a plurality of first ejection holes (11) within the coverage area of ​​the hopper space (A). The first reset link (4) has one end connected to the hinge between the X-direction material box baffle (2) and the material box bottom plate (1), and the other end of the first reset link (4) is provided with a first ejection part (41) that matches the first ejection hole (11). The first reset component (5) is connected between the first reset link (4) and the bottom plate (1) of the material box; When the hopper space (A) is empty, the first ejector (41) can eject the first ejector hole (11) under the action of the first reset member (5) and drive the X-direction hopper baffle (2) to flip outward to expand the top opening (B) of the hopper space (A); When the first ejector (41) stacks materials at the bottom of the hopper space (A), it can be pressed into the first ejector hole (11) under the action of gravity, and drive the X-direction hopper baffle (2) to flip inward to clamp the material pile.

2. The self-tightening material box as described in claim 1, characterized in that, Also includes: At least one first clearance structure (12) is provided at the bottom of the material box bottom plate (1). The shape of the first clearance structure (12) matches the shape of the first reset link (4) and is connected along the first direction (X) between the hinge of the corresponding X-direction material box baffle (2) and the material box bottom plate (1) and the first ejection hole (11).

3. The self-tightening material box as described in claim 2, characterized in that, The first yielding structure (12) includes: The first connecting rod channel (122) is located at the bottom of the material box bottom plate (1). One end of the channel is connected to the hinge between the corresponding X-direction material box baffle (2) and the material box bottom plate (1). The other end of the first connecting rod channel (122) extends along the first direction (X) and is connected to the first ejection hole (11).

4. The self-tightening material box as described in claim 1, characterized in that, The bottom plate (1) of the material box is provided with a first spring slot corresponding to the first ejection hole (11). The first reset member (5) is a first reset spring. One end of the first reset spring is connected to the first ejection part (41), and the other end of the first reset spring abuts against the first spring slot.

5. The self-tightening material box as described in claim 4, characterized in that, The first ejector part (41) is a first ejector rod that is vertically connected to the other end of the first reset link (4), and one end of the first reset spring is sleeved on the first ejector rod.

6. The self-tightening material box as described in any one of claims 1-5, characterized in that, Also includes: At least two X-direction adjustment members (6) are movably mounted on both sides of the material box bottom plate (1) in the first direction (X); At least two Y-axis adjusting members (7) are movably mounted on both sides of the bottom plate (1) of the material box in the second direction (Y) perpendicular to the second direction (Y); The X-direction material box baffle (2) is rotatably mounted on the X-direction adjusting member (6), and the Y-direction material box baffle (3) is mounted on the Y-direction adjusting member (7); The first ejection hole (11) is a strip-shaped hole extending along the first direction (X). The length of the strip-shaped hole matches the adjustment range of the X-direction material box baffle (2) and the first reset linkage (4) moving along the first direction (X) with the X-direction adjusting member (6).

7. The self-tightening material box as described in claim 6, characterized in that, The top surface of the bottom plate (1) of the material box is provided with an X-axis guide groove (13) and a Y-axis guide groove (14) respectively matching the X-axis adjusting member (6) and the Y-axis adjusting member (7). The first clearance structure (12) is connected to the X-axis guide groove (13). The X-axis adjusting member (6) and the Y-axis adjusting member (7) are respectively movably installed in the X-axis guide groove (13) and the Y-axis guide groove (14).

8. The self-tightening material box as described in claim 7, characterized in that, The X-axis adjusting member (6) and the Y-axis adjusting member (7) are respectively X-axis adjusting blocks and Y-axis adjusting blocks that match the X-axis guide groove (13) and the Y-axis guide groove (14). The X-axis adjusting block and the Y-axis adjusting block are respectively provided with a first mounting groove (61) and a second mounting groove (71) that match the X-axis material box baffle (2) and the Y-axis material box baffle (3). One end of the X-axis material box baffle (2) is hinged in the first mounting groove (61) and the Y-axis material box baffle (3) is installed in the second mounting groove (71).

9. The self-tightening material box as described in any one of claims 1-5, characterized in that, Also includes: A baffle film (8) is applied to the inner surfaces of the X-direction material box baffle (2) and the Y-direction material box baffle (3) facing the hopper space (A).

10. The self-tightening material box as described in claim 9, characterized in that, The baffle film (8) extends to the outer side of the X-direction material box baffle (2) and the Y-direction material box baffle (3) facing away from the material hopper space (A), and is fastened to the outer side by a pressing structure.

11. A substrate stacking apparatus, characterized in that, The device includes a lifting device and a self-tightening hopper as described in any one of claims 1-9. The hopper bottom plate (1) is provided with a lifting clearance hole (15) through which the lifting device passes. The lifting device is used to drive the substrate pad (9) to move up and down within the hopper space (A). The substrate pad (9) is used to stack the material pile formed by stacking a plurality of target substrates (D).

12. A photovoltaic cell production equipment, characterized in that, Includes the substrate stacking apparatus as described in claim 11, wherein the target substrate (D) is a photovoltaic cell.

Images