Sheet feeding device

Abstract

The utility model discloses a sheet feeding device which comprises a stacking and feeding mechanism used for containing a plurality of stacked trays containing sheets and suitable for moving the tray on the topmost layer to a preset position; the stacking and discharging mechanism is used for receiving and stacking vacant trays; the transferring mechanism is suitable for transferring the sheets in the tray on the topmost layer of the stacking and feeding mechanism or transferring the vacant tray to the stacking and discharging mechanism; the dust remover comprises a first dust removal part and a second dust removal part which are oppositely arranged, and a dust removal area is formed between the first dust removal part and the second dust removal part; the rotating mechanism comprises a rotating module and a bearing plate, the bearing plate is concaved inwards from the top of the bearing plate to form a containing groove for containing the sheets, and a first receding hole is formed in the groove bottom of the containing groove in a penetrating mode; the bearing plate is suitable for being driven by the rotating module to move to the taking and placing position so that the transferring mechanism can place the sheets into the bearing plate, or the bearing plate is moved to the dust removal area so that dust removal can be conducted. By the adoption of the structure, the dust removal effect of the sheets can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of semiconductor sheet processing, especially relates to a sheet feeding device. BACKGROUND

[0002] After the production of semiconductor sheet, it needs to be split by a splitting device. In order to improve the degree of automation, an upstream of the splitting device is usually provided with a feeding device. The feeding device usually includes a transfer mechanism, a storage structure and a dust removal mechanism. The storage structure stores sheets. The transfer mechanism is suitable for transferring the sheets at the storage structure to the dust removal mechanism for dust removal, and then transferring the dust-removed sheets to a transfer table so that the splitting device can grab the sheets on the transfer table. However, the transfer mechanism usually uses a vacuum suction type pick-and-place structure to pick and place the sheets. After the transfer mechanism directly transfers the sheets to the dust removal area of the dust removal mechanism, the sheets are blocked in a larger area due to the structure of the pick-and-place structure, resulting in poor dust removal effect.

[0003] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. INVENTION CONTENTS

[0004] The utility model aims at providing a sheet feeding device to effectively improve the dust removal effect of the sheet.

[0005] The utility model aims at providing a sheet feeding device to effectively improve the dust removal effect of the sheet.

[0006] The stacking feeding mechanism is used for accommodating a plurality of stacked trays loaded with sheets, and is suitable for moving the topmost tray to a preset position.

[0007] The stacking unloading mechanism is used for receiving and stacking empty trays.

[0008] The transfer mechanism is suitable for transferring the sheets in the topmost tray of the stacking feeding mechanism or transferring the empty tray to the stacking unloading mechanism.

[0009] The dust remover includes a first dust removal part and a second dust removal part arranged opposite in the vertical direction, and a dust removal area is formed between the first dust removal part and the second dust removal part.

[0010] The rotating mechanism includes a rotating module and a bearing plate in transmission connection with the rotating module. The bearing plate is recessed inward from its top to form a receiving groove accommodating the sheet. A first avoiding hole is formed in the groove bottom along the vertical direction.

[0011] The bearing plate is suitable for moving to a pick-and-place position under the drive of the rotating module to place the sheet by the transfer mechanism, or moving to the dust removal area for dust removal.

[0012] Further, the inner contour of the accommodating groove is adapted to the outer contour of the sheet material, and the size of the inner contour of the accommodating groove is greater than the size of the outer contour of the sheet material.

[0013] The sheet material feeding device comprises a positioning mechanism, which is located directly below the bearing plate when the bearing plate is in the taking and placing position, and is adapted to position the sheet material in the accommodating groove.

[0014] Further, the positioning mechanism comprises:

[0015] a lifting cylinder;

[0016] a clamping jaw cylinder, which is in driving connection with the lifting cylinder;

[0017] a plurality of positioning blocks, which are correspondingly arranged on each jaw portion of the clamping jaw cylinder;

[0018] The groove bottom of the accommodating groove is provided with second avoiding holes corresponding to the positioning blocks in the vertical direction, the second avoiding holes are uniformly distributed along the circumferential direction of the accommodating groove, each positioning block is adapted to extend into the corresponding second avoiding hole under the driving of the lifting cylinder, and is adapted to move in the horizontal direction under the driving of the clamping jaw cylinder, so as to push and position the sheet material.

[0019] Further, when the positioning blocks are in the second avoiding holes, the clamping jaw cylinder is adapted to drive the positioning blocks to move to an open state or a closed state, when the positioning blocks are in the open state, the pushing surface of the positioning blocks does not protrude from the side wall of the accommodating groove, and when the positioning blocks are switched to the closed state, the pushing surface of the positioning blocks protrudes from the side wall and pushes the side of the sheet material.

[0020] Further, the inner contour of the accommodating groove is square, the first avoiding hole is a square hole located in the middle of the accommodating groove, the groove bottom of the accommodating groove is surrounded by two first bottoms arranged in the first horizontal direction and two second bottoms arranged in the second horizontal direction, and each of the first bottoms and the second bottoms is provided with the second avoiding holes;

[0021] The positioning blocks corresponding to the second avoiding holes on the first bottoms are adapted to move in the first horizontal direction, and the positioning blocks corresponding to the second avoiding holes on the second bottoms are adapted to move in the second horizontal direction.

[0022] Further, the second avoiding holes on the first bottoms extend into the adjacent side wall in the first horizontal direction, and the second avoiding holes on the second bottoms extend into the adjacent side wall in the second horizontal direction.

[0023] Further, each of the first bottom and the second bottom is provided with a second avoiding hole at two ends, each of the positioning blocks comprises two positioning parts corresponding to the second avoiding holes and suitable for being inserted into the second avoiding holes.

[0024] Further, the stacking feeding mechanism comprises:

[0025] a line body for conveying the whole stack of trays;

[0026] a stacking bin located at the end of the line body to receive the trays on the line body, the top of the stacking bin being provided with a taking and placing opening;

[0027] a lifting mechanism located at the stacking bin, suitable for lifting the whole stack of trays and rising in the vertical direction to make the top tray in a preset position;

[0028] a clamping mechanism located at the taking and placing opening of the stacking bin, suitable for clamping and positioning the tray in the preset position.

[0029] Further, the stacking feeding mechanism and the stacking discharging mechanism are the same in structure and arranged side by side.

[0030] Further, the transfer mechanism is located above the stacking feeding mechanism and the stacking discharging mechanism, and comprises:

[0031] a first transfer module suitable for moving in a first horizontal direction;

[0032] a second transfer module in transmission connection with the first transfer module and suitable for moving in a second horizontal direction;

[0033] a connecting frame provided at the output end of the second transfer module;

[0034] a first taking and placing mechanism provided at the connecting frame and used for taking and placing the sheet material;

[0035] a second taking and placing mechanism provided at the connecting frame and used for taking and placing the tray.

[0036] Compared with the prior art, the present invention has the following beneficial effects: The dust collector of the present invention includes a first dust removal part and a second dust removal part arranged opposite to each other in a vertical direction, and a dust removal area is formed between the first dust removal part and the second dust removal part. When the sheet is located in the dust removal area, it can be effectively dusted from both above and below, resulting in a good dust removal effect. By setting a rotating mechanism, the rotating mechanism includes a rotating module and a bearing plate that is drivenly connected to the rotating module. The bearing plate has a receiving groove formed by its top recess. The sheet to be dusted can be transferred to the receiving groove by the transfer mechanism first, and then the bearing plate moves to the dust removal area under the drive of the rotating module to perform the dust removal operation on the sheet. This avoids the large-area obstruction of the sheet caused by the transfer mechanism directly transferring the sheet to the dust removal area. In addition, the bearing plate has a first clearance hole formed through the bottom of the receiving groove. The first clearance hole can expose a large area of ​​the sheet, further improving the dust removal effect. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the sheet feeding device of this utility model.

[0038] Figure 2 This is an installation diagram of the stacking feeding mechanism and the stacking unloading mechanism in this utility model.

[0039] Figure 3 This is a schematic diagram of the transfer mechanism in this utility model.

[0040] Figure 4 This is a schematic diagram of the installation of the dust collector, rotating mechanism and positioning mechanism in this utility model.

[0041] Figure 5 This is an exploded structural diagram of the bearing plate and positioning mechanism in this utility model.

[0042] Explanation of reference numerals in the attached figures:

[0043] 100, stacking feeding mechanism; 110, tray; 111, sheet; 120, wire body; 130, stacking bin; 140, lifting mechanism; 150, clamping mechanism; 200, stacking discharging mechanism; 300, transfer mechanism; 310, first transfer module; 320, second transfer module; 330, first pick-and-place mechanism; 340, second pick-and-place mechanism; 350, connecting frame; 360, first lifting module; 370, second lifting module; 400, dust remover; 410, first dust removal part; 420, second dust removal part; 430, dust removal area; 500, rotating mechanism; 510, rotating module; 520, bearing plate; 521, accommodating groove; 522, first avoiding hole; 523, second avoiding hole; 524, side wall; 525, first bottom; 526, second bottom; 600, positioning mechanism; 610, lifting cylinder; 620, clamping jaw cylinder; 630, positioning block; 631, positioning part; 6311, pushing surface; 632, connecting part. DETAILED DESCRIPTION

[0044] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the purpose of description, only the parts related to the present application are shown in the drawings, rather than all the structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0045] The terms "comprising" and "having" and any variations thereof in the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0046] In this document, reference to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is explicitly contemplated that embodiments described herein can be combined with each other.

[0047] Please refer to Figure 1 and Figure 4As shown, corresponding to the sheet feeding device of a preferred embodiment of the utility model, include: stack feeding mechanism 100, for receiving a plurality of stack, and equipped with sheet 111 tray 110, and suitable for the most top layer tray 110 moves to the preset position;Stack unloading mechanism 200, for receiving and stacking empty tray 110;Transfer mechanism 300, suitable for moving the sheet 111 in the tray 110 of the most top layer of stack feeding mechanism 100, or moving empty tray 110 to stack unloading mechanism 200 dust collector 400, including the first dust removal part 410 and the second dust removal part 420 relatively arranged along the vertical direction, the first dust removal part 410 and the second dust removal part 420 form dust removal area 430;Rotary mechanism 500, including rotary module 510 and the bearing plate 520 of transmission connection with rotary module 510, the bearing plate 520 is recessed from its top and forms the accommodation groove 521 containing sheet 111, the groove bottom of accommodation groove 521 is formed with the first avoiding hole 522 along the vertical direction;Wherein, the bearing plate 520 is suitable for moving to the pick-and-place position under the drive of rotary module 510 to put sheet 111 by transfer mechanism 300, or moving to dust removal area 430 to carry out dust removal.

[0048] The dust collector 400 in the utility model includes the first dust removal part 410 and the second dust removal part 420 relatively arranged along the vertical direction, the first dust removal part 410 and the second dust removal part 420 form dust removal area 430, and the sheet 111 can be effectively dusted on the upper and lower parts after being located in dust removal area 430, and the dust removal effect is good;By setting rotary mechanism 500, rotary mechanism 500 includes rotary module 510 and the bearing plate 520 of transmission connection with rotary module 510, the bearing plate 520 is recessed from its top and forms the accommodation groove 521, the sheet 111 to be dusted can be moved to the accommodation groove 521 by transfer mechanism 300, and then the bearing plate 520 moves to dust removal area 430 under the drive of rotary module 510 to carry out the dust removal operation of sheet 111, avoid that sheet 111 is directly moved to dust removal area 430 by transfer mechanism 300 and causes the large-area block of sheet 111, and the bearing plate 520 is formed with the first avoiding hole 522 from the groove bottom of accommodation groove 521, and the first avoiding hole 522 can make sheet 111 have larger area of exposure, and further improve the dust removal effect.

[0049] Further, refer to Figure 2As shown, the stacking feeding mechanism 100 and the stacking discharging mechanism 200 are arranged side by side along a first horizontal direction. The stacking feeding mechanism 100 comprises a line body 120, a stacking bin 130, a lifting mechanism 140 and a clamping mechanism 150. The line body 120 is arranged along a second horizontal direction, and the first horizontal direction and the second horizontal direction are perpendicular to each other. The stacking bin 130 is located at the output end of the line body 120, and a plurality of stacks of trays 110 can be placed from the input end of the line body 120 to the line body 120, and then the line body 120 drives the trays 110 to move to the stacking bin 130. The top of the stacking bin 130 is provided with a taking and placing opening, and the lifting mechanism 140 is located at the stacking bin 130, which is suitable for lifting the whole stack of trays 110 and rising along the vertical direction to make the topmost tray 110 in a preset position. The clamping mechanism 150 is located at the taking and placing opening, which is suitable for clamping and positioning the tray 110 in the preset position, facilitating the taking mechanism 300 to take the material.

[0050] In this embodiment, the lifting mechanism 140 can specifically adopt a hoist structure, which is a well-known structure, and the utility model will not be described here. The clamping mechanism 150 is composed of a plurality of clamping cylinders arranged around the tray 110 to clamp the edge of the tray 110. The structure of the stacking discharging mechanism 200 is the same as that of the stacking feeding mechanism 100, and the utility model will not be described here.

[0051] Further, referring to Figure 3 As shown, the transfer mechanism 300 is located above the stacking feeding mechanism 100 and the stacking discharging mechanism 200, and comprises a first transfer module 310, a second transfer module 320, a first taking and placing mechanism 330 and a second taking and placing mechanism 340. The first transfer module 310 and the second transfer module 320 are both linear modules, and the second transfer module 320 is in transmission connection with the first transfer module 310. The output end of the second transfer module 320 is provided with a connecting frame 350, and the first taking and placing mechanism 330 and the second taking and placing mechanism 340 are both arranged on the connecting frame 350 and are arranged on both sides of the second transfer module 320 along the first horizontal direction. The first taking and placing mechanism 330 and the second taking and placing mechanism 340 are both conventional vacuum adsorption structures, the first taking and placing mechanism 330 is used for taking and placing the sheet 111, and the second taking and placing mechanism 340 is used for taking and placing the tray 110.

[0052] The first taking and placing mechanism 330 is arranged adjacent to the stacking feeding mechanism 100, and the second taking and placing mechanism 340 is arranged adjacent to the stacking discharging mechanism 200. A first lifting module 360 is arranged between the first taking and placing mechanism 330 and the connecting frame 350, and a second lifting module 370 is arranged between the second taking and placing mechanism 340 and the connecting frame 350, so as to realize independent lifting of the first taking and placing mechanism 330 and the second taking and placing mechanism 340 along the Z-axis direction.

[0053] Further, referring to Figure 4 and Figure 5As shown, the inner contour of the accommodation groove 521 is matched with the outer contour of the sheet 111, and the size of the inner contour of the accommodation groove 521 is greater than the size of the outer contour of the sheet 111, so as to facilitate the sheet 111 to be put into the accommodation groove 521 by the transfer mechanism 300 or taken away from the accommodation groove 521 by the downstream equipment. In the embodiment, the sheet 111 is a square structure, the accommodation groove 521 is also a square groove, and the first avoiding hole 522 is a square hole located in the middle of the accommodation groove 521, so as to maximize the exposure of the bottom of the sheet 111.

[0054] Further, the sheet feeding device further comprises a positioning mechanism 600, which is located directly below the carrying plate 520 when the carrying plate 520 is in the taking and placing position, and is adapted to position the sheet 111 in the accommodation groove 521, so as to ensure that the downstream equipment can reliably take the sheet 111.

[0055] Specifically, the bottom of the accommodation groove 521 is vertically provided with a second avoiding hole 523, and a plurality of second avoiding holes 523 are uniformly distributed along the circumference of the accommodation groove 521. The positioning mechanism 600 comprises a lifting cylinder 610, a clamping jaw cylinder 620 and positioning blocks 630. The clamping jaw cylinder 620 is in transmission connection with the lifting cylinder 610, and the positioning blocks 630 are correspondingly arranged at each jaw part of the clamping jaw cylinder 620. Each positioning block 630 is adapted to extend into the corresponding second avoiding hole 523 under the drive of the lifting cylinder 610, and move along the horizontal direction under the drive of the clamping jaw cylinder 620, so as to push and position the sheet 111.

[0056] Further, when the positioning block 630 is in the second avoiding hole 523, the clamping jaw cylinder 620 is adapted to drive the positioning block 630 to move to an open state or a closed state. When the positioning block 630 is in the open state, the pushing surface 6311 of the positioning block 630 does not protrude relative to the side wall 524 of the accommodation groove 521, so as to avoid hindering the taking and placing of the sheet 111, and to ensure that the positioning block 630 can be located at the periphery of the sheet 111. When the positioning block 630 is switched to the closed state, the pushing surface 6311 of the positioning block 630 protrudes the side wall 524 and pushes the side of the sheet 111, so as to realize the positioning of the sheet 111.

[0057] Further, the bottom of the accommodation groove 521 is surrounded by two first bottoms 525 arranged opposite along a first horizontal direction and two second bottoms 526 arranged opposite along a second horizontal direction, and each first bottom 525 and each second bottom 526 is provided with a second avoiding hole 523. The positioning block 630 corresponding to the second avoiding hole 523 on the first bottom 525 is adapted to move along the first horizontal direction, and the positioning block 630 corresponding to the second avoiding hole 523 on the second bottom 526 is adapted to move along the second horizontal direction, so as to realize the positioning of the sheet 111 in the first horizontal direction and the second horizontal direction.

[0058] The second avoiding hole 523 on the first bottom 525 extends into the side wall 524 adjacent thereto along a first horizontal direction, so that the positioning block 630 corresponding thereto can move to an open state or a closed state along the first horizontal direction. The second avoiding hole 523 on the second bottom 526 extends into the side wall 524 adjacent thereto along a second horizontal direction, so that the positioning block 630 corresponding thereto can move to an open state or a closed state along the second horizontal direction.

[0059] Preferably, the two ends of each first bottom 525 and each second bottom 526 are provided with a second avoiding hole 523, each positioning block 630 comprises a connecting portion 632 and two positioning portions 631 connected to the connecting portion 632, and the connecting portion 632 is connected to the claw portion of the claw cylinder 620. The positioning portion 631 corresponds to the second avoiding hole 523 one by one, and is adapted to be inserted into the second avoiding hole 523. By using two positioning portions 631 to push the side of the sheet 111, the pushing is more stable and the effect is better.

[0060] The working process of the sheet feeding device is as follows: the full load of the sheet 111 is moved to the line body 120 of the stacking feeding mechanism 100, the line body 120 moves the tray 110 to the stacking bin 130, the lifting mechanism 140 lifts the tray 110, so that the topmost tray 110 is in a preset position; the first taking and placing mechanism 330 of the moving mechanism 300 moves to the tray 110 to suck the sheet 111 and moves to the receiving groove 521 of the bearing plate 520 at the taking and placing position; the rotary module 510 drives the bearing plate 520 to move to the dust removal area 430, and the dust remover 400 can effectively remove dust from the upper and lower sides of the sheet 111; after dust removal, the rotary module 510 drives the bearing plate 520 to move back to the taking and placing position, the lifting cylinder 610 drives the positioning block 630 in the open state to ascend and insert into the second avoiding hole 523, and then the claw cylinder 620 drives the positioning block 630 to switch to the closed state, so as to position the sheet 111 in the first horizontal direction and the second horizontal direction, and loosen the sheet 111 when the downstream equipment grabs the sheet 111; the above-mentioned actions are repeated, when the topmost tray 110 of the stacking feeding mechanism 100 is empty, the second taking and placing mechanism 340 of the moving mechanism 300 moves the empty tray 110 to the stacking unloading mechanism 200 for stacking and collecting, and when the stacking unloading mechanism 200 is full of trays 110, the stacking unloading mechanism 200 outputs the tray 110, so that the operator can take it away.

[0061] The above-mentioned is only the embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A sheet material feeding device characterized by comprising: The application relates to a sheet material feeding device, which comprises a stack feeding mechanism (100) for accommodating a plurality of stacks of trays (110) loaded with sheet materials (111) and adapted to move the topmost tray (110) to a preset position; a stack discharging mechanism (200) for receiving and stacking empty trays (110); a transfer mechanism (300) adapted to transfer the sheet material (111) in the topmost tray (110) of the stack feeding mechanism (100) or to transfer the empty tray (110) to the stack discharging mechanism (200); a dust remover (400) comprising a first dust removing part (410) and a second dust removing part (420) oppositely arranged along a vertical direction, and a dust removing area (430) formed between the first dust removing part (410) and the second dust removing part (420); and a rotating mechanism (500) comprising a rotating module (510) and a carrier plate (520) in transmission connection with the rotating module (510), wherein the carrier plate (520) is recessed from the top to form a receiving groove (521) for accommodating the sheet material (111), and a first avoiding hole (522) is formed through the groove bottom of the receiving groove (521) along the vertical direction. The inner contour of the receiving groove (521) is matched with the outer contour of the sheet material (111), and the size of the inner contour of the receiving groove (521) is larger than the size of the outer contour of the sheet material (111). The sheet material feeding device further comprises a positioning mechanism (600) located directly below the carrier plate (520) when the carrier plate (520) is at a pickup position and adapted to position the sheet material (111) in the receiving groove (521). The positioning mechanism (600) comprises a lifting cylinder (610), a clamping jaw cylinder (620) in transmission connection with the lifting cylinder (610), and a plurality of positioning blocks (630) correspondingly arranged at each jaw part of the clamping jaw cylinder (620). The groove bottom of the receiving groove (521) is provided with a second avoiding hole (523) corresponding to the positioning blocks (630) and uniformly distributed along the circumferential direction of the receiving groove (521), and each positioning block (630) is adapted to extend into the corresponding second avoiding hole (523) under the driving of the lifting cylinder (610) and to move along the horizontal direction under the driving of the clamping jaw cylinder (620) so as to push and position the sheet material (111). ​ ​ 2. The sheet material loading apparatus of claim 1 wherein, ​ ​ 3. The sheet material loading apparatus of claim 2, wherein, ​ ​ ​ ​ ​ 4. The sheet material loading apparatus of claim 3 wherein, When the positioning block (630) is in the second avoiding hole (523), the clamping jaw cylinder (620) is suitable for driving the positioning block (630) to move to an open state or a closed state, when the positioning block (630) is in the open state, the pushing surface (6311) of the positioning block (630) does not protrude relative to the side wall (524) of the containing groove (521), when the positioning block (630) is switched to the closed state, the pushing surface (6311) of the positioning block (630) protrudes the side wall (524) and pushes the edge side of the sheet (111).

5. The sheet material loading apparatus of claim 4 wherein, The inner contour of the containing groove (521) is square, the first avoiding hole (522) is a square hole located in the middle of the containing groove (521), the groove bottom of the containing groove (521) is enclosed by two first bottoms (525) arranged opposite along a first horizontal direction and two second bottoms (526) arranged opposite along a second horizontal direction, each of the first bottom (525) and the second bottom (526) is provided with the second avoiding hole (523); The positioning block (630) corresponding to the second avoiding hole (523) on the first bottom (525) is suitable for moving along the first horizontal direction, and the positioning block (630) corresponding to the second avoiding hole (523) on the second bottom (526) is suitable for moving along the second horizontal direction.

6. The sheet material loading apparatus of claim 5 wherein, The second avoiding hole (523) on the first bottom (525) extends into the side wall (524) adjacent thereto along the first horizontal direction, and the second avoiding hole (523) on the second bottom (526) extends into the side wall (524) adjacent thereto along the second horizontal direction.

7. The sheet material loading apparatus of claim 5 wherein, Both ends of each of the first bottom (525) and the second bottom (526) are provided with one second avoiding hole (523), each of the positioning blocks (630) comprises two positioning portions (631), the positioning portions (631) correspond to the second avoiding holes (523) one by one and are suitable for being inserted into the second avoiding holes (523).

8. The sheet material loading apparatus of claim 1 wherein, The stacking feeding mechanism (100) comprises: a line body (120) for conveying a whole stack of trays (110); a stacking bin (130) located at the end of the line body (120) to receive the trays (110) on the line body (120), the top of the stacking bin (130) is provided with a taking and placing opening; a lifting mechanism (140) located at the stacking bin (130), which is suitable for lifting the whole stack of trays (110) and ascending along the vertical direction to make the topmost tray (110) in a preset position; a clamping mechanism (150) located at the taking and placing opening of the stacking bin (130), which is suitable for clamping and positioning the tray (110) in the preset position.

9. The sheet material loading apparatus of claim 8 wherein, The stacking feeding mechanism (100) and the stacking discharging mechanism (200) are the same in structure and are arranged side by side.

10. The sheet material loading apparatus of claim 1 wherein, The transfer mechanism (300) is located above the stacking feeding mechanism (100) and the stacking discharging mechanism (200), and comprises: The first transfer module (310) is adapted to move along a first horizontal direction; The second transfer module (320) is in driving connection with the first transfer module (310) and is adapted to move along a second horizontal direction; The connecting frame (350) is arranged at an output end of the second transfer module (320); The first pick-and-place mechanism (330) is arranged on the connecting frame (350) and is used for picking and placing the sheet material (111); The second pick-and-place mechanism (340) is arranged on the connecting frame (350) and is used for picking and placing the tray (110).

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