CN210533329U - Device for testing eccentricity of roller shaft - Google Patents

Abstract

The utility model relates to a roller eccentricity measuring device. A device for testing the eccentricity of a roller shaft comprises a base (14), a vertical fixed support frame (1) arranged at the left end of the base (14), a vertical baffle (13) arranged at the right end of the base (14), two parallel guide rails (10) with one ends fixed on the fixed support frame (1) and the other ends fixed on the baffle (13), a movable support frame (7) arranged on the guide rails (10) through a lower sliding chute (8), two first motors (2) which are fixed at the lower part of the fixed support frame (1) and are arranged in parallel and in the same direction and are positioned at the same horizontal position, the roller shaft to be measured is arranged on the two second bearings by adjusting the movable support, the roller shaft to be measured is rotated by the second motor, the eccentricity of the roller shaft to be measured can be represented by the pressure sensed by the pressure sensor, and the eccentricity of the roller shaft to be measured can be obtained by controlling a computer.

Description

Device for testing eccentricity of roller shaft

Technical Field

The utility model relates to a roller eccentricity measuring device.

Background

The process flow for producing the single crystal cell slice comprises the following steps: the method comprises the steps of texturing, diffusion, wet etching, annealing, PE (polyethylene) screen printing, sintering, sorting and testing, wherein the wet etching is to remove phosphorus and silicon areas on the back and the side of a silicon wafer by using HF/HNO3 so as to avoid short circuit, but the etching is easy to be carried out in the etching process, namely, P _ N junctions on the front of the silicon wafer are etched and removed, so that the efficiency of a battery piece is reduced, the appearance is poor and the like.

At present, wet etching mainly comprises two technologies, one is a water floating technology, and the other is a roller liquid carrying technology, and because sulfuric acid is used in the water floating technology, the density of the sulfuric acid is higher, so that a silicon wafer can float on the solution, but the pollution of the sulfuric acid is larger, and is gradually reduced at present; the liquid carrying technology of the roller is that the roller is half immersed in liquid, a silicon wafer is arranged on a roller shaft and is not in direct contact with the liquid, the front surface of the silicon wafer is protected by a water film so as to be prevented from being etched by the liquid, and the back surface of the silicon wafer is etched by the liquid carried by the rotation of the roller so as to remove a phosphorus-silicon area on the back surface. The requirement on the eccentricity of the roller is high in the etching process, and in the actual production process, the silicon wafer is frequently shaken due to the fact that the roller shaft deforms and the roller is inconsistent in height, the water film is damaged, and therefore the upper surface of the silicon wafer is etched, namely over-etched.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: how to provide a roller eccentricity measuring device.

The utility model adopts the technical proposal that: the utility model provides a device of test gyro wheel axle eccentricity, including base (14), install vertical fixed bolster (1) at base (14) left end, install vertical baffle (13) at base (14) right-hand member, guide rail (10) that two parallels and be in same horizontal position on fixed bolster (1) other end are fixed baffle (13) are fixed to one end, install removal support frame (7) on guide rail (10) through lower part spout (8), fix two parallel syntropies in fixed bolster (1) lower part and arrange and be in two first motor (2) of same horizontal position, one end is installed on the output shaft of first motor (2) the other end and is installed two parallels and be in threaded rod (11) of same horizontal position on baffle (13) through first bearing (12), install support (5) on two threaded rod (11) through thread groove (4) of lower part, Install pressure sensor (6) on support (5), one inlays two second bearing (9) on fixed bolster (1) and one inlays on removing support frame (7), the control computer, install second motor (18) on fixed bolster (1), the axis of two second bearing (9) is on a straight line, the both ends of the gyro wheel axle (3) of awaiting measuring are installed respectively on a second bearing (9), control computer signal of telecommunication connection pressure sensor (6), the inner circle fixed connection of second motor (18) and second bearing (9) of installing on fixed bolster (1).

As a preferred mode: support (5) are a structure of falling U-shaped, two shank lower parts of support (5) respectively have a thread groove (4), thread groove (4) are a threaded through-hole, the inside central authorities at the top of support (5) have a cylindric guide post (16), the cover has a spring (15) on guide post (16), spring (15) are being overlapped by a drum (17), the upper portion fixed connection of spring (15) is on support (5), the lower part fixed connection of spring (15) is in the bottom of the inside of drum (17), install pressure sensor (6) on the bottom in the outside of drum (17), the contact top of pressure sensor (6) is the smooth surface, this smooth surface and the surface contact of test roller shaft (3).

The utility model has the advantages that: the roller shaft to be measured is arranged on the two second bearings by adjusting the movable support (the outer ring of the second bearing is fixed on the movable support or the fixed support, and the inner ring of the second bearing is fixed on the roller shaft to be measured), the roller shaft to be measured is rotated by the second motor, the eccentricity of the roller shaft to be measured can be represented by the pressure sensed by the pressure sensor, and the eccentricity of the roller shaft to be measured can be obtained by controlling the computer.

Drawings

Fig. 1 is a schematic top view of the present invention;

fig. 2 is a schematic front view of the present invention;

fig. 3 is a schematic view of the bracket of the present invention;

the device comprises a fixed support frame 1, a fixed support frame 2, a first motor 3, a roller shaft to be measured 4, a thread groove 5, a support 6, a pressure sensor 7, a movable support frame 8, a sliding groove 9, a second bearing 10, a guide rail 11, a threaded rod 12, a first bearing 13, a baffle plate 14, a base 15, a spring 16, a guide column 17, a cylinder 18 and a second motor.

Detailed Description

As shown in figures 1-3, a device for testing the eccentricity of a roller shaft comprises a base 14, a vertical fixed support frame 1 arranged at the left end of the base 14, a vertical baffle 13 arranged at the right end of the base 14, two parallel guide rails 10 with one ends fixed on the fixed support frame 1 and the other ends fixed on the baffle 13, a movable support frame 7 arranged on the guide rails 10 through a lower sliding chute 8, two first motors 2 arranged in parallel and in the same direction and at the same horizontal position and fixed at the lower part of the fixed support frame 1, two parallel threaded rods 11 with one ends arranged on the output shafts of the first motors 2 and the other ends arranged on the baffle 13 through first bearings 12, a bracket 5 arranged on the two threaded rods 11 through a threaded groove 4 at the lower part, a pressure sensor 6 arranged on the bracket 5, and two second bearings 9 embedded on the fixed support frame 1 and the movable support frame 7, The control computer and the second motor 18 are arranged on the fixed support frame 1, the axes of the two second bearings 9 are on the same straight line, two ends of the roller shaft 3 to be tested are respectively arranged on one second bearing 9, the control computer is connected with the pressure sensor 6 through an electric signal, and the second motor 18 is fixedly connected with the inner ring of the second bearing 9 arranged on the fixed support frame 1. The support 5 is an inverted U-shaped structure, the lower parts of two legs of the support 5 are respectively provided with a thread groove 4, the thread groove 4 is a threaded through hole, the center of the inside of the top of the support 5 is provided with a cylindrical guide post 16, a spring 15 is sleeved on the guide post 16, the spring 15 is sleeved by a cylinder 17, the upper part of the spring 15 is fixedly connected onto the support 5, the lower part of the spring 15 is fixedly connected to the bottom of the inside of the cylinder 17, the bottom of the outer side of the cylinder 17 is provided with a pressure sensor 6, the top of a contact of the pressure sensor 6 is a smooth surface, and the smooth surface is in contact with the surface of the test roller shaft 3. The base 14 can be regarded as a rectangular plate or an upper portion open-ended cell body, the fixed bolster 1, remove the support frame 7, baffle 13 is parallel, baffle 13 is a planar board, what guide rail 10 adopted in this embodiment is the cylinder structure, both ends are fixed on fixed bolster 1 and removal support frame 7 through welding or bolted connection, the fixed bolster position that corresponds first motor 2 and second motor 18 place has the mounting groove (not drawn in the picture), first motor 2 and second motor 18 are all installed in the mounting groove, spout 8 is a through-hole, fixed bolster 1 and removal support frame 7 can be a rectangular plate, the both ends one end of threaded rod 11 and the output shaft fixed connection of first motor 2, can rotate under the drive of first motor.

The utility model discloses a working process does: the movable support frame 7 is moved through the guide rail 10, two ends of the test roller shaft 3 to be detected are respectively arranged on the inner rings of the first bearings 9 of the fixed support frame 1 and the movable support frame 7, the bracket 5 is moved through the rotation of the second motor 18, so that the pressure sensor 6 is pressed against the upper part of the shaft side of the roller shaft 7 to be measured, when the pressure received by the pressure sensor 6 changes, the eccentricity is shown, if the pressure remains unchanged, indicating that the eccentricity is 0, the first motor 2 and the second motor 18 (stepper motor) are started, preset, when the first motor 2 rotates for one circle, the second motor 18 rotates for a minimum angle, the control computer (a common computer) receives the pressure change signal of the pressure sensor, then, the pressure signal is converted into eccentricity, so that all the eccentricity conditions of the whole roller shaft 3 to be measured except the mounting heads at the two ends can be displayed.

Claims (2)

1. The utility model provides a device of test gyro wheel axle eccentricity which characterized in that: the device comprises a base (14), a vertical fixed support frame (1) arranged at the left end of the base (14), a vertical baffle (13) arranged at the right end of the base (14), two parallel guide rails (10) which are fixed at the other ends of the fixed support frame (1) and are positioned at the same horizontal position on the baffle (13), a movable support frame (7) arranged on the guide rails (10) through a lower sliding groove (8), two parallel first motors (2) which are fixed at the lower part of the fixed support frame (1) and are arranged in the same direction and are positioned at the same horizontal position, two parallel threaded rods (11) which are arranged on the baffle (13) through a first bearing (12) and are arranged at the other ends of output shafts of the first motors (2) through threaded grooves (4) at the lower part, a support (5) arranged on the two threaded rods (11) through the threaded grooves (4) at the lower part, a, One inlays two second bearing (9) in fixed bolster (1) and one inlays on removing support frame (7), the control computer, install second motor (18) on fixed bolster (1), the axis of two second bearing (9) is on a straight line, the both ends of the gyro wheel axle (3) of awaiting measuring are installed respectively on a second bearing (9), control computer signal of telecommunication connection pressure sensor (6), the inner circle fixed connection of second motor (18) and second bearing (9) of installing on fixed bolster (1).

2. The apparatus for testing the eccentricity of a roller shaft according to claim 1, wherein: support (5) are a structure of falling U-shaped, two shank lower parts of support (5) respectively have a thread groove (4), thread groove (4) are a threaded through-hole, the inside central authorities at the top of support (5) have a cylindric guide post (16), the cover has a spring (15) on guide post (16), spring (15) are being overlapped by a drum (17), the upper portion fixed connection of spring (15) is on support (5), the lower part fixed connection of spring (15) is in the bottom of the inside of drum (17), install pressure sensor (6) on the bottom in the outside of drum (17), the contact top of pressure sensor (6) is the smooth surface, this smooth surface and the surface contact of test roller shaft (3).

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