Silicon wafer feeding and discharging righting structure and righting method thereof
Technical Field
The invention relates to a material inlet and outlet resetting device, which can quickly switch the positions of resetting flanges required by silicon wafers with different sizes on the premise of not replacing the whole resetting device, and belongs to semiconductor and solar cleaning equipment and wet processing equipment, in particular to chain cleaning equipment and wet processing equipment.
Background
In the cleaning industry, especially in the chain wet treatment industry, a silicon wafer rectifying device is often arranged at an inlet and an outlet of a main device so as to prevent the silicon wafer from being skewed when entering the device, and at present, a fixed structure is basically adopted, and due to innovation of silicon wafer raw material production technology, the silicon wafer is developing towards a large-size direction, for example, the silicon wafer with the traditional square 125 is gradually eliminated by the market, and at present, the silicon wafer with the main flow of 156 square is still 166 square in the near future. When the size of the silicon wafer is fed, the traditional righting device needs to be replaced integrally and can be suitable for the whole device. The switching cost is high and the modification is large.
Disclosure of Invention
The invention aims to solve the problem that the traditional silicon wafer inlet and outlet resetting device cannot be suitable for silicon wafers with various sizes.
In order to solve the technical problems, the technical scheme of the invention provides a silicon wafer feeding and discharging righting structure, which comprises a bottom plate, wherein a main transmission shaft is arranged on the bottom plate and is fixed on the bottom plate through a bearing support seat, a plurality of main transmission gears are arranged on the main transmission shaft and are respectively meshed with a plurality of auxiliary transmission gears which are fixed on the bottom plate at one side of the main transmission shaft, the plurality of auxiliary transmission gears are respectively connected with a plurality of auxiliary transmission shafts, the plurality of auxiliary transmission shafts are arranged in parallel, righting structures for righting silicon wafers are respectively arranged on the plurality of parallel auxiliary transmission shafts in parallel, the parallelly arranged righting structures are on the same central line, and a righting device which is longitudinally arranged and gradually narrows the dimension of the righting structures from bottom to top is formed on the plurality of auxiliary transmission shafts according to the movement direction of the silicon wafers shown by an arrow A; by means of the righting device, when the silicon wafer moves from bottom to top as shown by arrow A, the silicon wafer which is not in the middle of the righting device or is askew is adjusted through the size of the righting structure which is gradually narrowed.
Preferably, a plurality of sets of righting devices are arranged on the plurality of auxiliary transmission shafts in parallel, so that the righting adjustment of the silicon wafers can be simultaneously carried out, and the efficiency is improved.
Preferably, the correcting structure comprises a pair of correcting baffle wheels arranged on the auxiliary transmission shaft, a protruding baffle plate is arranged at the edge of one end of each correcting baffle wheel, the pair of baffle plates are oppositely arranged, the silicon wafer is arranged between the correcting baffle wheels, and the edge of the silicon wafer is limited by the baffle plates.
Preferably, a locking nut used for locking the return catch wheel is arranged on the other end of the return catch wheel and used for limiting the displacement of the return catch wheel.
Preferably, a limiting groove is arranged between the plurality of groups of the rectifying structures on each auxiliary transmission shaft.
Preferably, a limiting check ring is arranged in the limiting groove and used for blocking and damping between adjacent return structures during operation.
Preferably, the locking nut, the correcting baffle wheel and the auxiliary transmission shaft are connected through threads, the distance between the baffle plates on each pair of correcting baffle wheels is adjusted according to the size of the silicon wafer, and the locking nut locks the adjusted correcting baffle wheels through threads.
Preferably, a positioning groove is arranged between the locking nut and the auxiliary transmission shaft, and the locking nut is sealed through a side check ring arranged in the positioning groove.
The invention also provides a silicon wafer feeding and discharging resetting method, which comprises the following steps:
s1: putting the silicon wafer into the righting device:
s2: the main transmission shaft is driven by the motor to rotate so as to drive the main transmission gear and the auxiliary transmission gear to move in a meshed mode, so that the auxiliary transmission shaft is indirectly driven to rotate, and the silicon wafer is driven by the correcting baffle wheel on the auxiliary transmission shaft to move forwards in a linear mode according to the moving direction shown by an arrow A;
if the silicon chip is not in the middle of the correcting device or is askew, the edge of the silicon chip which is driven forward can be timely adjusted to a skew state when touching the correcting baffle wheel on the gradually narrowing correcting structure.
According to the invention, a plurality of groups of correcting structures are respectively arranged on a plurality of auxiliary transmission shafts, the correcting structures are a set of correcting device formed by combining the transmission shafts by the narrowing of the width and the plurality of auxiliary transmission shafts, and the silicon wafer placed on the correcting structures is driven to move forwards in a straight line through the rotation of the auxiliary transmission shafts, so that if the silicon wafer is not in the middle of the correcting region or is inclined, the inclined state can be timely adjusted when the silicon wafer touches the narrower correcting region correcting baffle wheels. If larger silicon wafer is needed to be switched, the locking nut is only required to be loosened, and then the return catch wheel is screwed to the required position, so that the whole auxiliary transmission shaft is not required to be replaced.
Drawings
FIG. 1 is a schematic structural view of a silicon wafer feeding and discharging resetting device provided by the invention;
fig. 2 is a schematic cross-sectional view of the righting structure of fig. 1.
The numbers in the figure are as follows:
1. a main transmission gear; 2. an auxiliary transmission shaft; 3. a silicon wafer; 4. a limit groove; 5. a limit retainer ring; 6. a return catch wheel; 7. and locking the nut.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
As shown in fig. 1 and fig. 2, the silicon wafer feeding and discharging normalization structure provided by the invention comprises a bottom plate, wherein a main transmission shaft is arranged on the bottom plate, the main transmission shaft is fixed on the bottom plate through a bearing support seat, a plurality of main transmission gears 1 are arranged on the main transmission shaft, the main transmission gears 1 are respectively meshed with a plurality of auxiliary transmission gears, one side of each main transmission shaft is fixed on the bottom plate, the plurality of auxiliary transmission gears are respectively connected with a plurality of auxiliary transmission shafts 2, and the plurality of auxiliary transmission shafts 2 are arranged in parallel; the silicon wafer straightening machine is characterized in that a straightening structure for straightening silicon wafers 3 is respectively arranged on the plurality of parallel auxiliary transmission shafts 2 in parallel, the straightening structure comprises a pair of straightening baffle wheels 6 arranged on the auxiliary transmission shafts 2, protruding baffle plates 6-1 are arranged at the edges of one ends of the straightening baffle wheels 6, the pair of baffle plates 6-1 are oppositely arranged, the silicon wafers 3 are arranged between the pair of straightening baffle wheels 6, the edges of the silicon wafers 3 are limited by the baffle plates 6-1, and locking nuts 7 for locking the straightening baffle wheels 6 are arranged at the other ends of the straightening baffle wheels 6 and used for limiting the displacement of the straightening baffle wheels 6.
The plurality of the parallel righting structures are arranged on the same central line, the sizes of the parallel righting structures are in accordance with the movement direction of the silicon wafer 3 shown by an arrow A, and a set of righting devices which are longitudinally arranged and gradually narrow in size from bottom to top are formed on the plurality of auxiliary transmission shafts 2; by means of this righting device, the silicon wafer 3 is adjusted by the size of the narrowing righting structure when the silicon wafer 3 moves from bottom to top as indicated by arrow a, the silicon wafer 3 not being in the middle of the righting device or being skewed.
Further, the locking nut 7, the correcting baffle wheels 6 are connected with the auxiliary transmission shaft 2 through threads, and are used for adjusting the distance between the baffle sheets 6-1 on each pair of correcting baffle wheels 6 according to the size of the silicon wafer, and the locking nut 7 locks the adjusted correcting baffle wheels 6 through threads; a positioning groove is arranged between the locking nut 7 and the auxiliary transmission shaft 2, and the locking nut is sealed by a side check ring 7-1 arranged in the positioning groove.
Further, a plurality of sets of correcting devices are arranged on the plurality of auxiliary transmission shafts 2 in parallel, so that the correcting adjustment of the silicon wafers 3 can be performed simultaneously, the efficiency is improved, a limiting groove 4 is arranged between the plurality of sets of correcting structures on each auxiliary transmission shaft 2, and a limiting check ring 5 is arranged in the limiting groove 4 and used for blocking and damping between the adjacent correcting structures during operation.
The invention provides a silicon wafer feeding and discharging normalization method, which comprises the following steps:
s1: putting the silicon wafer 3 into the righting device:
s2: the main transmission shaft is driven by a motor to rotate so as to drive the main transmission gear 1 and the auxiliary transmission gear to move in a meshing way, thereby indirectly driving the auxiliary transmission shaft 2 to rotate, and enabling the correcting catch wheel 6 on the auxiliary transmission shaft 2 to drive the silicon wafer 3 to move forwards in a straight line according to the movement direction shown by an arrow A;
if the silicon chip 3 is not in the middle of the righting device or is askew, the edge of the silicon chip 3 which is driven forward can be timely adjusted to the askew state when touching the righting baffle wheel 6 on the righting structure which is gradually narrowed.
According to the invention, a plurality of groups of correcting structures are respectively arranged on a plurality of auxiliary transmission shafts, the correcting structures are a set of correcting device formed by combining the transmission shafts by the narrowing of the width and the plurality of auxiliary transmission shafts, and the silicon wafer placed on the correcting structures is driven to move forwards in a straight line through the rotation of the auxiliary transmission shafts, so that if the silicon wafer is not in the middle of the correcting region or is inclined, the inclined state can be timely adjusted when the silicon wafer touches the narrower correcting region correcting baffle wheels. If larger silicon wafer is needed to be switched, the locking nut is only required to be loosened, and then the return catch wheel is screwed to the required position, so that the whole auxiliary transmission shaft is not required to be replaced.