Automatic discharging and conveying equipment

Abstract

The invention relates to the technical field of silicon wafer packaging, in particular to automatic discharging and conveying equipment which comprises a discharging mechanical arm, a conveying table and a material taking table, the material taking table directly faces the conveying table and is located at the end of the conveying table, a material box used for bearing silicon wafers is arranged on the conveying table, two parallel conveying belts are arranged on the conveying table, and the two conveying belts are arranged on the conveying table. The two conveying belts are respectively an upper belt and a lower belt, the upper belt conveys towards the material taking table, the conveying direction of the lower belt is opposite to the conveying direction of the upper belt, the end, facing the conveying table, of the material taking table is vertically connected with a lifting table in a sliding mode, and the material taking table is provided with a mechanical claw which is located above the lifting table and used for grabbing silicon wafers. The whole blanking process does not need manual operation, the mechanization degree is high, the whole process is controllable, the instability of manual transfer is reduced, the fragment rate of silicon wafers is reduced, and the efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of silicon wafer packaging, and in particular to an automatic unloading and conveying device. BACKGROUND

[0002] Boxing is an important process in the production of silicon wafers, and is of great significance in the production process of silicon wafers. With the development of the photovoltaic industry, in order to effectively control costs and achieve greater benefits, the thickness of the current photovoltaic silicon wafers is becoming smaller and smaller, and the area is becoming larger and larger.

[0003] After the appearance detection of the silicon wafers is completed, the silicon wafers form a silicon wafer pile in the unloading mechanism of the sorting machine, and then the silicon wafer pile is manually taken away and packaged. When the traditional manual transfer of the silicon wafers is carried out, the photovoltaic silicon wafers are easily damaged, even causing large-area cracking, and the efficiency is low. SUMMARY

[0004] In order to solve the above problems, the present application provides an automatic unloading and conveying device.

[0005] The automatic unloading and conveying device provided by the present application adopts the following technical scheme: An automatic unloading and conveying device, comprising an unloading manipulator, a conveying table and a material taking table, the material taking table is opposite to the conveying table and located at the end of the conveying table, the conveying table is provided with a box for carrying silicon wafers, the conveying table is provided with two parallel conveying belts, the two conveying belts are respectively an upper belt and a lower belt, the upper belt is transmitted towards the material taking table, the conveying direction of the lower belt is opposite to that of the upper belt, the end of the material taking table towards the conveying table is vertically slidably connected with a lifting table, and the material taking table is provided with a mechanical claw above the lifting table for grabbing silicon wafers.

[0006] By adopting the above technical scheme, the unloading manipulator takes down the silicon wafer pile and places it in the box on the upper belt, the lifting table is raised to be flush with the upper belt, the upper belt conveys the box containing the silicon wafers to the lifting table, the mechanical claw takes the silicon wafers from the box, and the unloading and transfer of the silicon wafers are completed. The lifting table is lowered to be flush with the lower belt, and the empty box is conveyed from the lifting table to the lower belt, and the return transport of the box is completed. The entire unloading process does not require manual operation, has a high degree of mechanization, the entire process is controllable, reduces the instability of manual transfer, reduces the breakage rate of the silicon wafers, and improves the efficiency.

[0007] As a preferred, the end of the conveying table close to the material taking table is slidably connected with a pressing piece for pressing the silicon wafers, the pressing piece is parallel to the silicon wafers, and the sliding direction of the pressing piece is parallel to the axis of the silicon wafers.

[0008] Through the above technical scheme, the silicon wafer material pile is compressed before being conveyed to the lifting platform by the compression sheet, so that the air between the silicon wafers is squeezed out, the silicon wafer material pile is compressed, and the compactness of the silicon wafer material pile is improved.

[0009] As preferred, a compression cylinder is rotationally connected to the conveying table, the upper end of the compression cylinder is rotationally connected to the conveying table, the output end of the compression cylinder is connected with a fixed sheet, and the fixed sheet is connected with the compression sheet through a plurality of buffer springs.

[0010] Through the above technical scheme, the output shaft of the compression cylinder is extended, the fixed sheet drives the compression sheet to squeeze the silicon wafer material pile through the buffer spring, the buffer spring protects the silicon wafer material pile, and damage to the silicon wafer caused by excessive pressure is prevented.

[0011] As preferred, the material box is provided with a limiting rod perpendicular to the silicon wafer, the conveying table is rotationally connected with a compression shaft and a measuring shaft which are parallel to each other, the upper end of the compression cylinder is connected perpendicularly to the compression shaft, the measuring shaft is vertically fixed with a measuring rod parallel to the compression cylinder, the measuring rod is provided with two photoelectric sensors for detecting the limiting rod, the photoelectric sensors are electrically connected with the compression cylinder through a controller, and the compression shaft and the measuring shaft are connected through a synchronous belt.

[0012] Through the above technical scheme, when the material box loaded with silicon wafers moves to the end of the conveying table, the limiting rod passes through the measuring rod, and the two photoelectric sensors on the measuring rod detect the limiting rod at the same time, which indicates that the measuring rod is parallel to the limiting rod at this time, and the measuring rod is parallel to the compression cylinder, which indicates that the compression sheet is parallel to the silicon wafer at this time, and the output shaft of the compression cylinder is extended, so that the compression sheet is pressed towards the silicon wafer to compress the silicon wafer. The compression shaft and the measuring shaft are connected through the synchronous belt, and the compression shaft and the measuring shaft rotate synchronously, so that when the operator adjusts the angle of the compression cylinder through the compression shaft, the measuring shaft rotates synchronously, so as to ensure that the compression cylinder and the measuring rod are always parallel. When the limiting rod passes through the measuring rod, if the two photoelectric sensors on the measuring rod do not detect the limiting rod at the same time, it indicates that the measuring rod is not parallel to the limiting rod, i.e. the compression sheet is not parallel to the silicon wafer, and the compression cylinder cannot be started at this time to avoid damage to the silicon wafer.

[0013] As preferred, the conveying belt comprises a plurality of roller bodies and a belt body wrapped outside the roller bodies, the end of the conveying belt close to the material taking table is provided with a limiting roller which is horizontally and slidingly connected with the conveying table, the limiting roller and the conveying table are connected through a limiting spring, and the limiting spring is in a natural state, and the limiting roller is in contact with the belt body.

[0014] By adopting the above technical scheme, when the conveying belt is normally conveying, the limiting roller is separated from the belt body, and the belt body can rotate to convey the material box. When the lifting platform moves away, it indicates that the conveying belt of the layer is no longer working. At this time, the limiting roller is reset under the action of the limiting spring, and the limiting roller is in contact with the belt body to compress the belt body. The belt body is limited and cannot rotate at this time, so as to limit the conveying belt of the layer and prevent it from starting by itself to affect the conveying of the subsequent material box.

[0015] Preferably, the length of the limiting roller is less than the length of the roller body, one end of the limiting roller is connected with the conveying table, and the other end is rotatably connected with an adjusting rod. An adjusting gap is formed between the adjusting rod and the belt body. The end of the lifting platform facing the conveying table is vertically provided with an unlocking piece opposite to the adjusting gap and matched with the adjusting rod. When the unlocking piece is in contact with the adjusting rod, the limiting roller is separated from the belt body.

[0016] By adopting the above technical scheme, when the lifting platform rises to the same level as the upper belt, the unlocking piece is inserted into the adjusting gap, and the unlocking piece is in contact with the adjusting rod and pushes the limiting roller away from the belt body through the adjusting rod, so as to unlock the belt body. At this time, the upper belt can rotate by itself, so as to realize the conveying of the material box. When the lifting platform descends to the same level as the lower belt, the lower belt is unlocked, and the limiting roller of the upper belt is reset to compress the belt body under the action of the limiting spring. The upper belt is locked and cannot rotate, so as to ensure the stability of the upper belt and the material box on the upper belt.

[0017] Preferably, one side of the unlocking piece facing the adjusting rod is provided with a tapered unlocking block, and the thickness of the upper and lower ends of the unlocking block is less than the thickness of the middle part of the unlocking block.

[0018] By adopting the above technical scheme, the unlocking piece moves up and down with the lifting platform. When the unlocking piece moves upward, the upper end of the unlocking block first contacts the adjusting rod on the upper belt, and as the lifting platform gradually rises, the unlocking block gradually pushes the adjusting rod to move, so as to drive the limiting roller to separate from the belt body. When the unlocking piece descends, the lower end of the unlocking block contacts the adjusting rod on the lower belt, and finally drives the limiting roller to separate from the belt body of the lower belt. The tapered unlocking block can unlock the upper belt and the lower belt respectively, and is convenient to use.

[0019] Preferably, the lifting platform is provided with a conveying belt parallel to the conveying belt.

[0020] By adopting the above technical scheme, the conveying belt and the conveying belt cooperate with each other to realize the reciprocating conveying of the material box between the conveying table and the lifting platform.

[0021] In summary, the present application has the following beneficial technical effects: Through the setting of the unloading mechanical arm, the conveying table and the material taking table, the silicon wafer can realize automatic unloading, which saves the inconvenience of manual unloading, improves the efficiency and guarantees the qualified rate of the silicon wafer. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the embodiment; Figure 2 This is a schematic diagram of the conveyor platform in the embodiment; Figure 3 This is a schematic diagram of the conveyor belt structure in the embodiment; Figure 4 This is a schematic diagram of the connection between the limiting roller and the conveyor table in the embodiment; Figure 5 This is a schematic diagram of the material handling platform in the embodiment; Figure 6 yes Figure 5 Enlarged schematic diagram of part A in the middle.

[0023] Explanation of reference numerals in the attached figures: 1. Unloading robot; 2. Conveyor table; 21. Pressing shaft; 22. Measuring shaft; 23. Measuring rod; 24. Photoelectric sensor; 3. Picking platform; 31. Lifting platform; 32. Mechanical gripper; 33. Unlocking plate; 34. Unlocking block; 35. Conveyor belt; 4. Material box; 41. Limiting rod; 5. Conveyor belt; 51. Upper belt; 52. Lower belt; 53. Belt body; 54. Roller body; 55. Limiting roller; 56. Limiting spring; 57. Adjusting rod; 61. Pressing cylinder; 62. Fixing plate; 63. Pressing plate; 64. Buffer spring. Detailed Implementation

[0024] The present application will be further described in detail below with reference to all the accompanying drawings.

[0025] Example

[0026] This application discloses an automated material feeding and conveying device, referring to... Figure 1 It includes a feeding robot 1, a conveyor 2, and a picking platform 3 arranged in sequence.

[0027] Reference Figure 1 The unloading robot 1 is installed at the sorting machine. The unloading robot 1 grabs the silicon wafer pile and places it on the conveyor table 2. The conveyor table 2 transports the silicon wafer pile to the picking table 3.

[0028] Reference Figures 1-2 The conveyor platform 2 is equipped with two parallel conveyor belts 5, and each conveyor belt 5 has a cassette 4 for carrying silicon wafer stacks. Each cassette 4 has a limiting rod 41 perpendicular to the silicon wafers. The silicon wafers are placed inside the cassette 4, and the limiting rod 41 restricts the position of the silicon wafers to ensure their stability. The process includes the cassette 4 containing the silicon wafer stacks being sorted by the sorting machine, and the unloading robot 1 picking up the cassette 4 and placing it on the conveyor belts 5 for transport.

[0029] Reference Figures 1-3, the conveying belt 5 includes an upper belt 51 and a lower belt 52, the conveying direction of the upper belt 51 is from the unloading manipulator 1 to the taking station 3, and the conveying direction of the lower belt 52 is opposite to that of the upper belt 51. The unloading manipulator 1 places the box 4 loaded with the silicon wafer stack on the upper belt 51, and the upper belt 51 conveys the loaded box 4 to the taking station 3 and finally to the taking station 3.

[0030] With reference to Figures 1-3 , the conveying station 2 is rotationally connected with the parallel pressing shaft 21 and measuring shaft 22 at the end close to the taking station 3, the pressing shaft 21 is rotationally connected above the end of the upper belt 51, and the measuring shaft 22 is connected with the pressing shaft 21 through a synchronous belt. The measuring shaft 22 and the pressing shaft 21 rotate synchronously.

[0031] With reference to Figures 1-3 , the pressing shaft 21 is vertically connected with the pressing cylinder 61, the upper end of the pressing cylinder 61 is connected with the pressing shaft 21, the output shaft of the lower end of the pressing cylinder 61 is vertically fixed with the fixed sheet 62, and the fixed sheet 62 is connected with the pressing sheet 63 through a plurality of buffer springs 64 away from the pressing shaft 21. The buffer springs 64 are parallel to the pressing cylinder 61. The pressing sheet 63, the fixed sheet 62 and the surface of the silicon wafer are parallel to each other, and the sliding direction of the pressing sheet 63 driven by the pressing cylinder 61 is parallel to the axis direction of the silicon wafer.

[0032] With reference to Figures 1-3 , when the loaded box 4 moves to the end of the upper belt 51 under the drive of the upper belt 51, the pressing sheet 63 is opposite to and above the silicon wafer. The output shaft of the pressing cylinder 61 is started, the fixed sheet 62 and the pressing sheet 63 are pressed to the silicon wafer, the silicon wafer stack is pressed, and the air between the silicon wafers is discharged. The buffer springs 64 protect the silicon wafer from damage caused by excessive pressure.

[0033] Moreover, the operator can rotate the pressing shaft 21 to drive the pressing cylinder 61 to rotate, adjust the angle of the pressing sheet 63, and ensure the parallelism of the pressing sheet 63 and the silicon wafer.

[0034] With reference to Figures 1-3 , the measuring shaft 22 is vertically fixed with the measuring rod 23 parallel to the pressing cylinder 61. Since the measuring shaft 22 and the pressing shaft 21 are connected through a synchronous belt, the measuring shaft 22 and the pressing shaft 21 always rotate synchronously, and therefore the measuring rod 23 is always parallel to the pressing cylinder 61.

[0035] With reference to Figures 1-3 , the measuring rod 23 is provided with two photoelectric sensors 24 for detecting the limiting rod 41, and the two photoelectric sensors 24 are respectively located at the two ends of the measuring rod 23. The photoelectric sensors 24 are electrically connected with the pressing cylinder 61 through a controller.

[0036] With reference toFigures 1-3 When the loaded box 4 passes through the measuring rod 23, the two photoelectric sensors 24 detect the limiting rod 41, and when the two photoelectric sensors 24 simultaneously detect the limiting rod 41, it indicates that the measuring rod 23 is parallel to the limiting rod 41, that is, the pressing cylinder 61 is parallel to the limiting rod 41, and the pressing sheet 63 is parallel to the surface of the silicon wafer. At this time, the pressing cylinder 61 is started, and the pressing sheet 63 is pressed towards the silicon wafer, so that the pressing effect is good, and the silicon wafer is not easy to be damaged.

[0037] Referring to Figures 1-3 If the two photoelectric sensors 24 do not synchronously detect the limiting rod 41, and there is a difference between the detection time of the two photoelectric sensors 24, it indicates that the limiting rod 41 is not parallel to the measuring rod 23, that is, the pressing sheet 63 is not parallel to the surface of the silicon wafer. At this time, the controller controls the pressing cylinder 61 not to extend, so as to avoid the pressing sheet 63 pressing the silicon wafer to cause damage to the silicon wafer.

[0038] Referring to Figures 1-3 The silicon wafer stack after pressing is finally transferred to the taking table 3. The end of the taking table 3 close to the conveying table 2 is vertically and slidingly connected with a lifting table 31, and the lifting table 31 is provided with a conveying belt 35 matched with the conveying belt 5. The taking table 3 is also provided with a mechanical claw 32 located above the lifting table 31. The lifting table 31 drives the conveying belt 35 to be flush with the upper belt 51, the upper belt 51 conveys the loaded box 4 to the conveying belt 35, the mechanical claw 32 takes the silicon wafer stack from the box 4 to the next process, and the box 4 is empty at this time. The lifting table 31 is lowered to be flush with the lower belt 52, and the empty box 4 is transferred from the conveying belt 35 to the lower belt 52, so as to realize the return of the empty box 4, empty the lifting table 31, and wait for the next loaded box 4 to enter.

[0039] Referring to Figures 1-4 The conveying belt 5 includes a plurality of roller bodies 54 and a belt body 53 wrapped outside the roller bodies 54. The roller bodies 54 drive the belt body 53 to rotate, and the belt body 53 drives the box 4 to move. The two conveying belts 5 close to the end of the taking table 3 are each provided with a limiting roller 55 parallel to the roller body 54, and the length of the limiting roller 55 is less than the length of the roller body 54. The limiting roller 55 is slidingly connected with the conveying table 2, and the sliding direction of the limiting roller 55 is parallel to the conveying direction of the conveying belt 5.

[0040] Referring to Figures 1-4 The limiting roller 55 is connected with the conveying table 2 through a limiting spring 56. When the limiting spring 56 is in a natural state, the limiting roller 55 abuts against the belt body 53 and presses the belt body 53 tightly, so that the belt body 53 cannot rotate at this time.

[0041] Referring to Figures 1-6The one end of the limiting roller 55 is connected with the conveying table 2, and the other end is coaxially connected with the adjusting rod 57, the diameter of the adjusting rod 57 is smaller than the diameter of the limiting roller 55, and the adjusting gap is formed between the adjusting rod 57 and the belt body 53. The end of the lifting table 31 towards the conveying table 2 is vertically provided with the unlocking sheet 33 which is opposite to the adjusting gap and matched with the adjusting rod 57, and the unlocking sheet 33 is provided with the conical unlocking block 34 on the side towards the adjusting rod 57, the thickness of the upper and lower ends of the unlocking block 34 is smaller than the thickness of the middle of the unlocking block 34. When the unlocking sheet 33 is in contact with the adjusting rod 57, the limiting roller 55 is separated from the belt body 53.

[0042] Referring to Figures 1-6 During the process that the lifting table 31 gradually rises until the upper belt 51 is flat, the unlocking sheet 33 is inserted into the adjusting gap, the upper end of the unlocking block 34 is in contact with the adjusting rod 57 on the upper belt 51, and with the gradual rising of the lifting table 31, the unlocking block 34 gradually pushes the adjusting rod 57 to move, so as to drive the limiting roller 55 to separate from the belt body 53 of the upper belt 51. At this time, the upper belt 51 is unlocked and can rotate by itself, so as to realize the transmission of the material box 4.

[0043] Referring to Figures 1-6 During the process that the lifting table 31 gradually rises until the upper belt 51 is flat, the unlocking sheet 33 is inserted into the adjusting gap, the upper end of the unlocking block 34 is in contact with the adjusting rod 57 on the upper belt 51, and with the gradual rising of the lifting table 31, the unlocking block 34 gradually pushes the adjusting rod 57 to move, so as to drive the limiting roller 55 to separate from the belt body 53 of the upper belt 51. At this time, the upper belt 51 is unlocked and can rotate by itself, so as to realize the transmission of the material box 4.

[0044] Therefore, the starting of the upper belt 51 and the lower belt 52 is controlled by the position of the lifting table 31, so as to ensure the interaction of the material box 4 between the lifting table 31 and the conveying table 2, and avoid the self-starting of the upper belt 51 or the lower belt 52, which affects the stability of the transmission of the material box 4.

[0045] The implementation principle of the automatic material conveying equipment is that the material unloading manipulator 1 takes the loaded material box 4 and puts it on the upper belt 51, the lifting table 31 rises to be flat with the upper belt 51, the upper belt 51 conveys the loaded material box 4 to the end, the pressing sheet 63 presses the silicon wafer, then the loaded material box 4 is transmitted to the lifting table 31, and the mechanical claw 32 takes away the silicon wafer pile. The lifting table 31 descends to be flat with the lower belt 52, and the empty material box 4 is transmitted from the lifting table 31 to the lower belt 52.

[0046] The above are the preferred embodiments of the present application, and are not used to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An automated material unloading and conveying device, comprising an unloading robot (1), a conveying table (2), and a picking table (3), wherein the picking table (3) is directly opposite the conveying table (2) and located at the end of the conveying table (2), characterized in that: The conveyor table (2) is provided with a material box (4) for carrying silicon wafers. The conveyor table (2) is provided with two parallel conveyor belts (5), which are an upper belt (51) and a lower belt (52). The upper belt (51) is transported towards the picking platform (3), and the lower belt (52) is transported in the opposite direction to the upper belt (51). The picking platform (3) is vertically slidably connected to a lifting platform (31) at the end facing the conveyor table (2). The picking platform (3) is provided with a mechanical claw (32) located above the lifting platform (31) for grabbing silicon wafers.

2. The automated material feeding and conveying equipment according to claim 1, characterized in that: The end of the conveyor (2) near the material handling table (3) is slidably connected to a clamping plate (63) for clamping the silicon wafer. The clamping plate (63) is parallel to the silicon wafer, and the sliding direction of the clamping plate (63) is parallel to the axis of the silicon wafer.

3. The automated material feeding and conveying equipment according to claim 2, characterized in that: A clamping cylinder (61) is rotatably connected to the conveyor table (2). The upper end of the clamping cylinder (61) is rotatably connected to the conveyor table (2). A fixing plate (62) is connected to the output end of the clamping cylinder (61). The fixing plate (62) and the clamping plate (63) are connected by several buffer springs (64).

4. The automated material feeding and conveying equipment according to claim 3, characterized in that: The material box (4) is provided with a limiting rod (41) perpendicular to the silicon wafer. The conveyor table (2) is rotatably connected with a pressing shaft (21) and a measuring shaft (22) that are parallel to each other. The upper end of the pressing cylinder (61) is perpendicularly connected to the pressing shaft (21). The measuring shaft (22) is vertically fixed with a measuring rod (23) parallel to the pressing cylinder (61). The measuring rod (23) is provided with two photoelectric sensors (24) for detecting the limiting rod (41). The photoelectric sensors (24) are electrically connected to the pressing cylinder (61) through a controller. The pressing shaft (21) and the measuring shaft (22) are connected by a synchronous belt.

5. An automated material feeding and conveying device according to claim 1, characterized in that: The conveyor belt (5) includes several rollers (54) and a belt (53) wrapped around the rollers (54). The end of the conveyor belt (5) near the picking table (3) is provided with a limiting roller (55) that is horizontally slidably connected to the conveying table (2). The limiting roller (55) is connected to the conveying table (2) by a limiting spring (56). When the limiting spring (56) is in its natural state, the limiting roller (55) abuts against the belt (53).

6. An automated material feeding and conveying device according to claim 5, characterized in that: The length of the limiting roller (55) is less than the length of the roller body (54). One end of the limiting roller (55) is connected to the conveyor table (2), and the other end is rotatably connected to the adjusting rod (57). An adjusting gap is formed between the adjusting rod (57) and the belt body (53). The lifting platform (31) is vertically provided with an unlocking piece (33) facing the conveyor table (2), which is directly opposite to the adjusting gap and cooperates with the adjusting rod (57). When the unlocking piece (33) abuts against the adjusting rod (57), the limiting roller (55) separates from the belt body (53).

7. An automated material feeding and conveying device according to claim 6, characterized in that: The unlocking piece (33) has a tapered unlocking block (34) on the side facing the adjusting rod (57), and the thickness of the upper and lower ends of the unlocking block (34) is less than the thickness in the middle of the unlocking block (34).

8. An automated material feeding and conveying device according to claim 1, characterized in that: The lifting platform (31) is equipped with a conveyor belt (35) that is parallel to the conveyor belt (5).

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