Wet chain type high-speed transmission mechanism

Abstract

The utility model belongs to the technical field of conveying, and relates to a wet-process chain type high-speed transmission mechanism which comprises a pair of track plates, a driving motor arranged on the outer sides of the track plates, a transmission shaft driven by the driving motor and a plurality of conveying rolling shafts driven by the transmission shaft. The conveying rolling shafts are rotationally arranged on the inner sides of the track plates in the second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, the two track plates are each provided with a sliding block and a PEEK bearing, the conveying rolling shafts penetrate through the sliding blocks and separate the interior and the exterior of the frame, and the PEEK bearings are located between the sliding blocks and the ends of the conveying rolling shafts; a driven bevel gear is arranged at the end, penetrating out of the frame, of each conveying rolling shaft, and driving bevel gears meshed with the driven bevel gears are arranged on the transmission shafts. According to the conveying device, the PEEK bearing is adopted, the friction force of rotation is remarkably reduced, the conveying speed can be increased to 5.0-5.5 m / min on the premise that it is guaranteed that etching liquid does not overflow, and the productivity of equipment is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying, in particular to a wet-type chain high-speed transmission mechanism. Background Art

[0002] In the photovoltaic industry, due to the low cost, wet-type chain equipment is applied to many processes of solar cell production. The wet-type chain equipment generally adopts the way of roller transmission to convey silicon wafers. The transmission mechanisms of the previous equipment are as follows: the installation methods of rollers and sliders, and axles and mounting seats generally adopt the direct rotation movement mode. This kind of structure is simple, low in cost and convenient to install. However, the belt speed of the roller cannot be too fast. Once the speed is too fast, the friction coefficients between the roller and the slider, and between the axle and the mounting seat will increase, and the service life will be greatly reduced, thus affecting the service life of the whole equipment. With the increasing demand of customers for the production capacity improvement of each wet process section, the previous transmission belt speed of 3.0 - 3.5 m / min can no longer meet the production capacity requirements of customers.

[0003] Therefore, it is urgent to improve the transmission mechanism to solve the above problems. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a wet-type chain high-speed transmission mechanism, which can synchronously transmit the driving force of the driving shaft driving motor to multiple conveying rollers, ensure the sealing performance and have less resistance, so as to be able to maintain a high conveying speed.

[0005] The utility model realizes the above purpose through the following technical scheme: a wet-type chain high-speed transmission mechanism, including a pair of track plates, a driving motor arranged outside the track plates, a driving shaft driven by the driving motor, and a plurality of conveying rollers driven by the driving shaft. The driving shaft is rotatably arranged on one side of the track plates along the first horizontal direction, and the conveying rollers are all rotatably arranged inside the track plates along the second horizontal direction. The second horizontal direction is perpendicular to the first horizontal direction. One slider and one PEEK bearing are arranged on each side of the track plates. The slider is penetrated by the end of the conveying roller and separates the inside and outside of the track plates. The PEEK bearing is located between the slider and the end of the conveying roller. Each conveying roller is provided with a driven bevel gear at one end close to the driving shaft, and the driving shaft is provided with a driving bevel gear meshing with the driven bevel gear.

[0006] Specifically, the driving motor drives a driving sprocket, and the driving shaft is provided with a driven sprocket. The axes of the driving sprocket and the driven sprocket both extend along the first horizontal direction and are driven by a chain.

[0007] Specifically, a plurality of support frames are arranged along the first horizontal direction on the outer side of one of the track slabs. The transmission shaft passes through all the support frames, and PEEK bearings matched with the transmission shaft are arranged on the support frames.

[0008] Furthermore, spur gears are arranged on the same side of the conveying roller close to the support frame and another adjacent conveying roller. A transmission gear meshing with both of them is arranged between the two spur gears. There is no driven bevel gear on the conveying roller close to the support frame, and a driven bevel gear is arranged on the other adjacent conveying roller.

[0009] Specifically, a plurality of shallow grooves are evenly distributed around the axis of the conveying roller, and each shallow groove extends along the generatrix of the conveying roller.

[0010] Specifically, a speed measuring mechanism is arranged on the outer side of the track slab. The speed measuring mechanism includes a light shielding sheet fixed to the transmission shaft and a photoelectric sensor fixed in a relative position to the track slab. A plurality of notches are evenly distributed around the axis of the light shielding sheet, and the detection light path of the photoelectric sensor vertically passes through the notches.

[0011] The beneficial effects of the technical solution of the present utility model are as follows:

[0012] By adopting PEEK bearings between the slider and the end of the conveying roller in this conveying device, the rotational friction is significantly reduced. On the premise of ensuring that the etching solution does not overflow, the transmission speed can be increased to 5.0 - 5.5 m / min, greatly improving the production capacity of the equipment. Description of the Drawings

[0013] Figure 1 is the three-dimensional view of the wet-process chain high-speed transmission mechanism of the embodiment;

[0014] Figure 2 is Figure 1 the partial enlarged view of position A in

[0015] Figure 3 is the installation partial view of the conveying roller with shallow grooves;

[0016] Figure 4 is the working state diagram of the speed measuring mechanism.

[0017] The numbers in the figure represent:

[0018] 1 - track slab, 11 - slider, 12 - PEEK bearing;

[0019] 2 - drive motor, 21 - driving sprocket;

[0020] 3 - transmission shaft, 31 - driving bevel gear, 32 - driven sprocket;

[0021] 4 - Conveyor roller, 41 - Driven bevel gear, 42 - Spur gear, 43 - Shallow groove;

[0022] 5 - Chain;

[0023] 6 - Transmission gear;

[0024] 7 - Support frame, 71 - PEEK bearing;

[0025] 8 - Speed measuring mechanism, 81 - Light shielding sheet, 82 - Photoelectric inductor. Specific implementation mode

[0026] The following further elaborates on the present utility model in conjunction with specific embodiments.

[0027] Embodiment:

[0028] As Figures 1 to 3 shown, the wet - type chain high - speed transmission mechanism of the present utility model includes a pair of track plates 1, a driving motor 2 arranged outside the track plates 1, a transmission shaft 3 driven by the driving motor 2, and a plurality of conveyor rollers 4 driven by the transmission shaft 3. The transmission shaft 3 is rotatably arranged on one side of the tank body 1 along the first horizontal direction, and the conveyor rollers 4 are all rotatably arranged inside the track plates 1 along the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction. Each of the two track plates 1 is provided with a slider 11 and a PEEK bearing 12. The slider 11 is penetrated by the conveyor roller 4 and separates the inside and outside of the track plate 1. The PEEK bearing 12 is located between the slider 11 and the end of the conveyor roller 4. Each conveyor roller 4 is provided with a driven bevel gear 41 at one end close to the transmission shaft 3, and the transmission shaft 3 is provided with a driving bevel gear 31 meshing with the driven bevel gear 41.

[0029] The conveyor rollers 4 are arranged at the same height for transporting solar cells. The driving force is generated by the driving motor 2. Using the transmission relationship between the driving bevel gear 31 and the driven bevel gear 41, it is then transmitted to each conveyor roller 4 through the transmission shaft 3. The slider 11 is used to prevent the etching solution from overflowing outside the tank body 1. The PEEK bearing 12 refers to a bearing made of polyetheretherketone, and this kind of bearing has self - lubricity and good sealing performance. Because the applicable occasion requires both preventing the etching solution from overflowing from the rotating contact surface and reducing the rotational resistance, PEEK bearings 12 are provided at both ends of the conveyor roller 4, which helps to improve the transmission speed of the entire conveying device, thereby accelerating the working efficiency of the wet - type chain high - speed transmission mechanism. In actual use, the transmission speed can be increased to 5.0 - 5.5 m / min, greatly improving the equipment production capacity.

[0030] As Figure 2 shown, the driving motor 2 drives a driving sprocket 21, the transmission shaft 3 is provided with a driven sprocket 32, and the axes of the driving sprocket 21 and the driven sprocket 32 are both along the first horizontal direction and the two are driven by a chain 5.

[0031] The driving motor 2 does not directly drive the transmission shaft 3 to prevent the wear of the driving shaft of the driving motor 2 from accelerating due to poor coaxiality between the two. Using a chain 5 for transmission not only provides a large enough transmission force but also extends the service life of the parts.

[0032] As Figure 3 shown, a number of shallow grooves 43 are evenly distributed around the axis on a part of the conveying roller 4, and each shallow groove 43 extends along the generatrix of the conveying roller 4.

[0033] In the wet chain equipment for solar cells, the lower half of the conveying roller 4 is immersed in the bath liquid. When the conveying roller 4 rotates, the etching solution will adhere to the surface of the conveying roller 4 and then contact the lower surface of the solar cell. The shallow grooves 43 can use the surface tension of the liquid to retain more etching solution in the space of the shallow grooves 43, enabling the lower surface of the solar cell to be wetted by more etching solution, making the etching more precise and stable, and effectively solving the defect problems of obvious fragmentation and black spots on the silicon wafer.

[0034] As Figure 2 shown, a plurality of support frames 8 are arranged on the outer side of one of the track plates 1 along the first horizontal direction. The transmission shaft 3 passes through all the support frames 7, and PEEK bearings 71 that cooperate with the transmission shaft 3 are provided on the support frames 7.

[0035] The PEEK bearings 71 also play a role in reducing friction, so that the resistance received by the transmission shaft 3 during rotation is relatively low.

[0036] As Figure 2 shown, on the same side of the conveying roller close to the support frame 7 and another adjacent conveying roller, spur gears 42 are provided. A transmission gear 6 that meshes with both of them is provided between the two spur gears 42. There is no driven bevel gear 41 on the conveying roller close to the support frame 7, and a driven bevel gear 41 is provided on the adjacent another conveying roller.

[0037] Because of the compact part structure, the support frame 7 will interfere with the nearest conveying roller 4, making it impossible to set the driven bevel gear 41. Therefore, the spur gear transmission method is adopted to enable the conveying roller 4 to rotate spontaneously as well.

[0038] As Figure 1 、 Figure 2 and Figure 4 shown, a speed measuring mechanism 8 is provided on the outer side of the track plate 1. The speed measuring mechanism 8 includes a light shielding sheet 81 fixed to the transmission shaft 3 and a photoelectric sensor 82 with a fixed relative position to the track plate 1. A number of notches 811 are evenly distributed around the axis on the light shielding sheet 81, and the detection optical path of the photoelectric sensor 82 perpendicularly passes through the notches 811.

[0039] When the notch 811 is aligned with the detection optical path, the photoelectric inductor 82 can receive the ray emitted by itself; when the notch 811 is not aligned with the detection optical path, the ray is blocked, and a light-shielding signal is obtained. Since the number of notches 811 on the light-shielding sheet 81 is determined, when the number of light-shielding signals is the same as the number of notches 811, it represents that the transmission shaft 3 rotates one week. Also, because the transmission shaft 3 and the conveying roller 4 are driven by gears, the rotation period of the transmission shaft 3 is inversely proportional to the conveying speed of each conveying roller 4. Therefore, the speed measuring mechanism 8 can characterize the conveying speed of the transmission mechanism, so that the cumulative error in the transmission process can be corrected, and the program can realize the precise calibration of the rotation belt speed of the driving motor 2 to meet the production belt speed requirement in real time.

[0040] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the creative concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A wet chain high-speed transmission mechanism, characterized in that: It includes a pair of track plates, a driving motor arranged on the outer side of the track plates, a transmission shaft driven by the driving motor and a plurality of conveying rollers driven by the transmission shaft, wherein the transmission shaft is rotatably arranged on the outer side of the track plates along a first horizontal direction, and the conveying rollers are rotatably arranged on the inner side of the track plates along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction, and each of the two track plates is provided with a slider and a PEEK bearing, and the slider is passed through by the end of the conveying roller and separates the inside and outside of the track plates, and the PEEK bearing is located between the slider and the end of the conveying roller, and each conveying roller is provided with a driven bevel gear at one end close to the transmission shaft, and the transmission shaft is provided with an active bevel gear meshing with the driven bevel gear.

2. The wet chain high-speed transmission mechanism according to claim 1, characterized in that: The driving motor drives a driving sprocket, and a driven sprocket is arranged on the transmission shaft. The axes of the driving sprocket and the driven sprocket are both along the first horizontal direction and are driven by a chain.

3. The wet chain high-speed transmission mechanism according to claim 1, characterized in that: A plurality of support frames are arranged on the outer side of one track plate along a first horizontal direction, the transmission shaft passes through all the support frames, and the support frames are provided with PEEK bearings matched with the transmission shaft.

4. The wet chain high-speed transmission mechanism according to claim 3, characterized in that: A spur gear is provided on the same side of the conveying roller close to the support frame and another adjacent conveying roller, a transmission gear meshing with the two spur gears is provided between the two spur gears, there is no driven bevel gear on the conveying roller close to the support frame, and a driven bevel gear is provided on the other adjacent conveying roller.

5. The wet chain high-speed transmission mechanism according to claim 1, characterized in that: A detection frame is arranged above the conveying device, and a plurality of sensors for downward detection are arranged on the detection frame along a second horizontal direction.

6. The wet chain high-speed transmission mechanism according to claim 1, characterized in that: Some of the conveying rollers are evenly distributed with a plurality of shallow grooves around the axis, and each shallow groove extends along the generatrix of the conveying roller.

7. The wet chain high-speed transmission mechanism according to claim 1, characterized in that: A speed measuring mechanism is provided on the outer side of the track plate, and the speed measuring mechanism includes a shading plate fixed to the transmission shaft and a photoelectric sensor fixed in a relative position to the track plate. The shading plate has a plurality of notches evenly distributed around the axis, and the detection light path of the photoelectric sensor passes vertically through the notches.

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