A single-crystal silicon square bar lifting machine

Abstract

The present invention discloses a single-crystal silicon ingot lifting and handling machine, which comprises a center-of-gravity adjusting mechanism (1), a suction mechanism (2) and a control mechanism (3) that cooperate with each other. The center-of-gravity adjusting mechanism (1) includes a lifting ring (11), a center-of-gravity adjusting plate (12), a linear guide rail (13) and a rodless cylinder (14); the suction mechanism (2) includes a flipping cylinder (21) and a flipping plate (22) connected to each other. An anti-collision gasket (23) on the flipping plate (22) corresponds to and cooperates with a 45° limit post (41). The bottom of the flipping plate (22) is connected to a suction cup (26) through a suction cup mounting plate (25); the control mechanism (3) includes a pneumatic control box (32), a circular handrail (33), a pressure gauge (34), a pneumatic control button box (35) and a controller (36). The advantages of the present invention are that it integrates the functions of suction, handling and boxing, improves the operation efficiency, effectively guarantees the quality of the ingot, and has strong applicability and high safety factor.

Description

Technical Field

[0001] The present invention relates to the technical field of monocrystalline silicon rod machining, and in particular to a monocrystalline silicon square rod suction and lifting machine. Background Art

[0002] At present, domestic monocrystalline silicon rod manufacturing is mainly divided into three major production and manufacturing segments: crystal pulling, machining, and slicing. Among them, the finished square rods produced in the single crystal machining process are obtained by dividing the length of the long silicon rods pulled at the crystal pulling end, and then truncating them into fixed-length or non-fixed-length single crystal wafers by a diamond wire or loop cutting machine. Subsequently, the single crystal wafers are processed into semi-finished square rods with a rough surface in the shape of a cuboid by a silicon rod squaring machine using wire cutting technology. Finally, the semi-finished square rods with a rough surface are ground into finished square rods with a surface roughness range of 0.05 μm to 0.4 μm by a silicon rod grinding machine using coarse and fine grinding wheels.

[0003] Some photovoltaic single crystal manufacturing enterprises do not have a slicing factory, or the machining factory area is far from the slicing factory area. The produced finished square rods are shipped to downstream slicing suppliers or their own slicing factories. During this process, there is the transportation and packaging of the finished square rods. Since the technology of automatic packaging of the current finished square rods is not yet mature, more than 90% of the enterprises currently have two methods for packing the finished silicon rods, namely manually picking and packing into boxes and clamping the two end faces of the crystal rod with a fixture and packing into boxes.

[0004] Due to the high requirements of the slicing factory for the surface quality of the finished square rods, during the process of packing the finished square rods, it is required that the wiped finished square rods should not be touched by hand as much as possible during packing, otherwise it will cause water marks and patterns on the surface of the crystal rod, and seriously, it will cause local black spots on the crystal rod, resulting in customer complaint losses for the machining end. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that the surface of the existing square rods is easily contaminated during transportation and packaging, which affects the quality. A monocrystalline silicon square rod suction and lifting machine is provided, which integrates the functions of sucking, transporting, and packing, improves the operation efficiency, effectively guarantees the quality of the crystal rod, has strong applicability and a high safety factor.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A monocrystalline silicon square rod suction and lifting machine includes a center of gravity adjustment mechanism, a suction mechanism, and a control mechanism that cooperate with each other. The center of gravity adjustment mechanism includes a lifting ring, the bottom of the lifting ring is fixed on a center of gravity adjustment plate, and the lower part of the center of gravity adjustment plate is respectively connected to a linear guide rail and a rodless cylinder. The linear guide rail and the axis of the rodless cylinder are parallel to each other, and the lower part thereof is fixedly connected to a vertical square tube connecting column;

[0008] The sucking mechanism includes a flipping cylinder, which is connected to the square pipe connecting column. The telescopic rod at the lower part of the flipping cylinder is hinged to the flipping plate. The flipping plate includes a waist-shaped plate and a vertical bending plate. The telescopic rod is hinged to one end of the waist-shaped plate, and the other end of the waist-shaped plate is hinged to the lower end of the square pipe connecting column. And the bending plate is arranged right below the square pipe connecting column. A beak structure protruding outward is provided on the bending plate. The upper part of the beak structure is set as an inclined plane section, and the bottom is set as a straight section. The straight section is perpendicular to the bending plate, and the included angle between the inclined plane section and the straight section is 45°. And an anti-collision gasket is connected to the inclined plane section. A 45° limit post is connected to the square pipe connecting column. The 45° limit post is vertically downward and directly faces the anti-collision gasket. And when the flipping plate is flipped upward by 45°, the anti-collision gasket just contacts the bottom of the 45° limit post. The bottom of the bending plate is connected to the sucker mounting plate through a connecting plate. A row of suckers for sucking square bars is fixed on the sucker mounting plate, so as to suck the square bars and realize the flipping of the square bars;

[0009] The control mechanism includes a pneumatic control box connected to the pneumatic control box base. The pneumatic control box base is horizontally connected to the square pipe connecting column. An inclined annular armrest is connected to one side of the pneumatic control box base. A pressure gauge is connected to the middle of the annular armrest, a pneumatic control button box is connected to the left side, and a controller is connected to the right side, so as to monitor the pressure and perform real-time control on the lifting and sucking machine.

[0010] Further, the linear guide rail includes a mutually cooperating guide rail and a slider, and the two form a sliding guiding fit. The slider is connected to the bottom of the center of gravity adjusting plate. The guide rail is fixed on the guide rail mounting column. The guide rail mounting column is connected to the square pipe connecting column, and a cylinder mounting bracket is connected to one side of it. The rodless cylinder is connected to the cylinder mounting bracket.

[0011] Further, a guiding mechanism is also connected below the center of gravity adjusting plate, and the axis of the guiding mechanism is parallel to the axis of the linear guide rail.

[0012] Further, the guiding mechanism includes a mutually cooperating guide rod and a guide block, and the two form a sliding guiding fit. The guide block is connected to the bottom of the center of gravity adjusting plate. The two ends of the guide rod are connected to the rod end fixing seats. The rod end fixing seats are connected to the other side of the guide rail mounting column. The guide rod is arranged parallel to the axis of the guide rail.

[0013] Further, a cylinder fixing ring is connected to the square pipe connecting column through a fixing plate. The flipping cylinder passes through the cylinder fixing ring and its two sides are hinged to the cylinder fixing ring through hinge shafts.

[0014] Further, the pneumatic control box base is of a rectangular frame structure. The lower end of the flipping cylinder passes through the rectangular frame structure and is connected to the flipping plate below. The waist-shaped plate, the bending plate and the beak structure are of an integrally formed structure.

[0015] Further, the standard value of the working air pressure of the lifting machine is 0.6 MPa to 0.8 Mpa. When the working air pressure is lower than 0.6 Mpa, a buzzer alarm is issued in the pneumatic control box to remind the personnel to stop the operation and perform maintenance.

[0016] Further, a set of fasteners is connected between the controller and the annular handrail.

[0017] In the technical solution of the present invention, the sucker assembly adsorbs on the surface of the finished square bar. After pressing the material taking function button and reaching the standard pressure value within 1 to 2 seconds, the electric hoist is lifted by pressing the up button through the controller, so that the whole product is lifted, and the product is transported to the temporary storage table, the trolley table, the equipment feeding table or the tray slot. When the surface of the product touches the lowering table, press the discharging button to separate the lifting machine from the surface of the product, so as to achieve the functions of loading and unloading. The present invention can meet the loading and unloading of single crystal silicon square bars with different specification margins, can be used for semi-finished square bars and finished square bars produced by single crystals, and can also be used for the handling and transfer of cuboid structure articles in other industries. It can absorb at any inclined plane such as 0° and 45°, and integrates functions such as strong applicability, large adsorption force, short adsorption time, air-off pressure holding, high safety factor, and under-voltage alarm. There is no need to directly touch with both hands, which improves the operation efficiency and effectively guarantees the quality of the crystal bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of the single crystal silicon square bar lifting machine of the present invention;

[0019] Figure 2 is a side view of the single crystal silicon square bar lifting machine of the present invention;

[0020] Figure 3 is a front view of the single crystal silicon square bar lifting machine of the present invention;

[0021] Figure 4 is a state diagram of the single crystal silicon square bar lifting machine of the present invention when sucking at 45°;

[0022] Figure 5 is a schematic structural diagram of the turning plate of the present invention. EMBODIMENTS EXAMPLE

[0023] To make the present invention clearer and more understandable, the following further describes a single crystal silicon square bar lifting machine of the present invention with reference to the accompanying drawings. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] See Figure 1 , a single crystal silicon square bar lifting machine, including a center of gravity adjusting mechanism 1, a sucking mechanism 2 and a control mechanism 3 that cooperate with each other, characterized in that:

[0025] SeeFigures 1 - 3 The gravity center adjusting mechanism 1 includes a lifting ring 11. The bottom of the lifting ring 11 is fixed on a gravity center adjusting plate 12. Below the gravity center adjusting plate 12, it is respectively connected to a linear guide rail 13 and a rodless cylinder 14. The axis of the linear guide rail 13 is parallel to that of the rodless cylinder 14;

[0026] The linear guide rail 13 includes a guide rail 131 and a slider 132 which are matched with each other to form a sliding guiding fit. The slider 132 is connected to the bottom of the gravity center adjusting plate 12. The guide rail 131 is fixed on a guide rail mounting column 15. The guide rail mounting column 15 is connected to a square tube connecting column 4, and a cylinder mounting frame 16 is connected to one side of it. The rodless cylinder 14 is connected to the cylinder mounting frame 16;

[0027] A guiding mechanism 17 is also connected below the gravity center adjusting plate 12. The guiding mechanism 17 includes a guiding rod 171 and a guiding block 172 which are matched with each other to form a sliding guiding fit. The guiding block 172 is connected to the bottom of the gravity center adjusting plate 12. Both ends of the guiding rod 171 are connected to a rod end fixing seat 173. The rod end fixing seat 173 is connected to the other side of the guide rail mounting column 15. The axis of the guiding rod 171 is parallel to that of the guide rail 131;

[0028] The sucking mechanism 2 includes a flipping cylinder 21. The flipping cylinder 21 is connected to the square tube connecting column 4. A cylinder fixing ring 7 is connected to the square tube connecting column 4 through a fixing plate 6. The flipping cylinder 21 passes through the cylinder fixing ring 7 and its two sides are hinged to the cylinder fixing ring 7 through hinge shafts;

[0029] See Figure 1 、 Figure 2 、 Figure 4 and Figure 5 The telescopic rod 21a at the lower part of the flipping cylinder 21 is hinged to a flipping plate 22. The flipping plate 22 includes a waist-shaped plate 221 and a vertical bending plate 222. The telescopic rod 21a is hinged to one end of the waist-shaped plate 221. The other end of the waist-shaped plate 221 is hinged to the lower end of the square tube connecting column 4. And the bending plate 222 is arranged right opposite to the lower part of the square tube connecting column 4. A beak structure 223 protruding outward is arranged on the bending plate 222. The upper part of the beak structure 223 is a slope section 223a and the bottom is a flat section 223b. The flat section 223b is perpendicular to the bending plate 222. The included angle between the slope section 223a and the flat section 223b is 45°. And an anti-collision gasket 23 is connected to the slope section 223a. A 45° limiting post 41 is connected to the square tube connecting column 4. The 45° limiting post 41 is vertically downward and is arranged right opposite to the anti-collision gasket 23. And when the flipping plate 22 is flipped upward by 45°, the anti-collision gasket 23 just contacts the bottom of the 45° limiting post 41. The bottom of the bending plate 222 is connected to a sucker mounting plate 25 through a connecting plate 24. A row of suckers 26 for sucking a square bar 5 are fixed on the sucker mounting plate 25 to suck the square bar and realize the flipping of the square bar;

[0030] The control mechanism 3 includes a pneumatic control box 32 connected to the base 31 of the pneumatic control box. The base 31 of the pneumatic control box is a rectangular frame structure. The base 31 of the pneumatic control box is horizontally connected to the square tube connecting column 4. The lower end of the tilting cylinder 21 passes through the rectangular frame structure and is connected downward to the tilting plate 22. The waist-shaped plate 221, the bent plate 222, and the beak structure 223 are integrally formed structures;

[0031] One side of the base 31 of the pneumatic control box is connected with an inclined annular handrail 33. A pressure gauge 34 is connected to the middle of the annular handrail 33, a pneumatic control button box 35 is connected to the left side, and a controller 36 is connected to the right side. A set of fasteners 37 is connected between the controller 36 and the annular handrail 33 for pressure monitoring and real-time control of the lifting machine.

[0032] In the present invention, the lifting ring 11 and the center of gravity adjusting plate 12 are locked and connected through the self-thread of the lifting ring, mainly used for hanging and lifting the overall structure; the rodless cylinder 14 and the linear guide rail 13 are connected by a screw. The upper layer is connected to the center of gravity adjusting plate 12, and the lower layer is connected to the linear guide rail mounting column 15. The above-mentioned assembled parts are integrally connected and fastened to the square tube connecting column through a back plate by a screw, mainly used for adjusting the center of gravity when the lifting machine lifts and flips the ingot; the tilting plate 22, the connecting plate 24, the suction cup mounting plate 25, and the suction cup 26 constitute the suction cup assembly. The tilting plate 22 is driven to flip by the telescopic movement of the piston rod of the tilting cylinder 21 to achieve a 45° flip of the suction cup assembly; the pneumatic control box 32 mainly plays a role in pneumatic control. Components such as a vacuum generator, a solenoid valve, a buzzer, an air storage tank, air path components, and a tracheal joint are configured inside the box; the controller 36 mainly drives the electric hoist to realize the up and down movements of the lifting machine; the pneumatic control button box 35 includes functions such as forward adjustment, backward adjustment, flipping, material taking, and material discharging for adjusting the flat suction and 45° suction center of gravity of the ingot; the main function of the pressure gauge 34 is to display the air pressure value. The working air pressure standard value of this lifting machine is 0.6 MPa to 0.8 Mpa. When the working air pressure is lower than 0.6 Mpa, the buzzer will give an alarm to remind the personnel to stop the operation and perform maintenance; the main function of the 45° limit bolt is to stop and mechanically hard limit in the 45° state. When the beak structure on the tilting plate touches the bottom surface of the 45° limit bolt, it means that the lifting machine is in the 45° flipping state at this time.

[0033] When in use, the following steps can be carried out:

[0034] (1) Material taking: The surface of the semi-finished or finished square bar contacts the suction cup 26 of the lifting machine, and the material taking function button is pressed;

[0035] (2) Pressure confirmation: Reach the standard pressure value of 0.6 MPa to 0.8 Mpa within 1 to 2 seconds after sucking;

[0036] (3) Lifting: Press the up button of the controller 36 to drive the electric hoist chain to lift and hoist the adsorbed finished square bar.

[0037] (4) Transfer: Manually assist in operating the KBK truss to move the finished square bar to the inspection table, special trolley, equipment loading table or pallet trough.

[0038] (5) Discharging: After the lower surface of the finished square bar touches the lower placing table, press the discharging button to separate the lifting and suspending machine from the product surface, so as to achieve the function of loading and unloading.

[0039] (6) Material turning: The 0° and 45° state turning of the lifting and suspending machine is realized by the "front adjustment" and "rear adjustment" function buttons on the pneumatic control button box 35, and the rest of the operations are the same as steps (1) to (5).

[0040] The basic material of the lifting and suspending machine of the present invention is made of 45# steel plate and square tube. The lifting and suspending machine has two working modes, namely the product flat suction mode and the product 45° inclined plane adsorption mode.

[0041] Except for the above embodiments, the present invention may also have other implementation manners. All technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.

Claims

1. A single-crystalline silicon square bar lifting machine, comprising a center-of-gravity adjusting mechanism (1), a sucking mechanism (2) and a control mechanism (3) that cooperate with each other, characterized in that: The center-of-gravity adjusting mechanism (1) includes a lifting ring (11), the bottom of the lifting ring (11) is fixed on a center-of-gravity adjusting plate (12), and the lower part of the center-of-gravity adjusting plate (12) is respectively connected to a linear guide rail (13) and a rodless cylinder (14). The linear guide rail (13) and the axis of the rodless cylinder (14) are parallel to each other, and the lower part thereof is fixedly connected to a vertical square tube connecting column (4); The sucking mechanism (2) includes a turning cylinder (21), the turning cylinder (21) is connected to the square tube connecting column (4), the telescopic rod (21a) at the lower part of the turning cylinder (21) is hinged to a turning plate (22). The turning plate (22) includes a waist-shaped plate (221) and a vertical bending plate (222). The telescopic rod (21a) is hinged to one end of the waist-shaped plate (221), and the other end of the waist-shaped plate (221) is hinged to the lower end of the square tube connecting column (4). And the bending plate (222) is arranged directly opposite the lower part of the square tube connecting column (4). A beak structure (223) protruding outward is provided on the bending plate (222). The upper part of the beak structure (223) is set as an inclined surface section (223a), and the bottom is set as a flat section (223b). The flat section (223b) is perpendicular to the bending plate (222). The included angle between the inclined surface section (223a) and the flat section (223b) is 45°. And an anti-collision gasket (23) is connected to the inclined surface section (223a). A 45° limit post (41) is connected to the square tube connecting column (4). The 45° limit post (41) is vertically downward and directly opposite the anti-collision gasket (23). And when the turning plate (22) turns upward by 45°, the anti-collision gasket (23) just contacts the bottom of the 45° limit post (41). The bottom of the bending plate (222) is connected to a sucker mounting plate (25) through a connecting plate (24). A row of suckers (26) for sucking the square bar (5) are fixed on the sucker mounting plate (25); The control mechanism (3) includes a pneumatic control box (32) connected to a pneumatic control box base (31). The pneumatic control box base (31) is horizontally connected to the square tube connecting column (4). An inclined annular handrail (33) is connected to one side of the pneumatic control box base (31). A pressure gauge (34) is connected to the middle of the annular handrail (33), a pneumatic control button box (35) is connected to the left side, and a controller (36) is connected to the right side.

2. The single-crystalline silicon square bar lifting machine according to claim 1, characterized in that: The linear guide rail (13) includes a mutually cooperating guide rail (131) and a slider (132), and the two form a sliding guiding fit. The slider (132) is connected to the bottom of the center-of-gravity adjusting plate (12). The guide rail (131) is fixed on a guide rail mounting column (15). The guide rail mounting column (15) is connected to the square tube connecting column (4), and a cylinder mounting frame (16) is connected to one side thereof. The rodless cylinder (14) is connected to the cylinder mounting frame (16).

3. The single-crystalline silicon square bar lifting machine according to claim 2, characterized in that: Below the center of gravity adjusting plate (12), a guiding mechanism (17) is further connected. The axis of the guiding mechanism (17) is parallel to the axis of the linear guide rail (13).

4. The single-crystal silicon square bar lifting machine according to claim 3, characterized in that: The guiding mechanism (17) includes a guiding rod (171) and a guiding block (172) which are matched with each other, and the two form a sliding guiding fit. The guiding block (172) is connected to the bottom of the center of gravity adjusting plate (12). Both ends of the guiding rod (171) are connected to the rod end fixing seat (173). The rod end fixing seat (173) is connected to the other side of the guide rail mounting column (15). The guiding rod (171) is arranged parallel to the axis of the guide rail (131).

5. The single-crystal silicon square bar lifting machine according to any one of claims 1 to 4, characterized in that: A cylinder fixing ring (7) is connected to the square pipe connecting column (4) through a fixing plate (6). The turning cylinder (21) passes through the cylinder fixing ring (7), and both sides thereof are hinged to the cylinder fixing ring (7) through a hinge shaft.

6. The single-crystal silicon square bar lifting machine according to any one of claims 1 to 4, characterized in that: The pneumatic control box base (31) is of a rectangular frame structure. The lower end of the turning cylinder (21) passes through the rectangular frame structure and is connected to the turning plate (22) downward. The waist-shaped plate (221), the bent plate (222) and the beak structure (223) are of an integrally formed structure.

7. The single-crystal silicon square bar lifting machine according to any one of claims 1 to 4, characterized in that: The standard value of the working air pressure of the lifting machine is 0.6 MPa to 0.8 Mpa.

8. The single-crystal silicon square bar lifting machine according to any one of claims 1 to 4, characterized in that: A set of fasteners (37) is connected between the controller (36) and the annular handrail (33).

Images