CN215754539U

CN215754539U - Plate type transmission mechanism

Info

Publication number: CN215754539U
Application number: CN202022815013.8U
Authority: CN
Inventors: 杨星; 李长江; 周文彬
Original assignee: Suzhou Shengcheng Solar Equipment Co Ltd
Current assignee: Suzhou Shengcheng Solar Equipment Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2022-02-08
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses a plate-type transmission mechanism, which comprises a support plate and a transmission roller, wherein the support plate is provided with a specific arc-shaped chamfer, the transmission roller is driven by a bidirectional non-return movable bearing, the support plate is arranged on the transmission roller driven by the bidirectional non-return movable bearing, the bottom of the advancing end of the support plate is provided with the arc-shaped chamfer, and the size of the arc-shaped chamfer is determined by the sizes of the support plate and the transmission roller. Through the mode, the arc chamfer design of the carrier plate and the movable design of the bidirectional bearing reduce large-amplitude vibration caused by hard collision in the transmission process, so that the hidden crack and poor damage of a product caused by collision vibration in the transmission process are reduced.

Description

Plate type transmission mechanism

Technical Field

The utility model relates to the technical field of photovoltaic product production, in particular to a plate type transmission mechanism.

Background

Environmental pollution and increasingly remarkable energy crisis, in recent years, China focuses on energy structure adjustment, preferentially develops clean energy and obtains great effect, solar energy is inexhaustible, the solar energy is the new energy with the most development potential and is the main power of future energy systems, solar cells are devices capable of converting solar energy into electric energy, and the technology is mainly divided into three categories: the first type is a single crystal/polycrystal traditional diffusion method technology, the efficiency is low, and the efficiency is eliminated by the market; the second type is PERC technology, which is an upgrade of the former technology, and the efficiency can be improved by adding some equipment, which is already the mainstream technology in the existing market; the third technology is an N-type high-efficiency solar technology represented by HIT, IBC or HBC technology, and particularly the HIT heterojunction technology has a blowout phenomenon in 2020 due to high efficiency improvement potential, so that the replacement of PERC market into a new market mainstream will be a necessary trend.

The technological process of the heterojunction solar cell needs to be processed by the technological processes of PECVD (plasma enhanced chemical vapor deposition) amorphous silicon passivation layer plating, PVD (physical vapor deposition) transparent conductive film plating and the like, the transmission of the carrier plate in the vacuum chamber of the vacuum coating equipment for photovoltaic mass production is usually carried out by adopting a plate-type transmission mode as shown in figure 1, and the plate-type transmission mechanism comprises a transmission roller and a driven carrier plate; the transmission roller is driven by the directional bearing, the bearing is controlled by the motor to rotate, the carrier plate is driven by the transmission roller to advance, the driven carrier plate can drop by a certain angle due to dead weight in the transmission process, so that the carrier plate collides with the bearing at an angle, the silicon wafer on the carrier plate can jump in the collision process, the hidden danger of poor product crack, damage and the like can be caused, the collision can be carried out once when the driven carrier plate passes through one transmission bearing every time, the vibration size after the collision is related to the transmission speed and the dropping angle, the dropping angle is related to the size material of the carrier plate and the distance between transmission shafts, and the smaller the distance between the transmission shafts is, the smaller the transmission vibration is certainly; however, the increasing of the transmission shafts in the vacuum chamber to reduce the distance between the transmission shafts will increase the cost greatly due to the high requirement of the vacuum degree in the vacuum chamber.

Generally, the bearings of the transmission roller are fixed bearings, the collision process between the carrier plate and the transmission roller can be simplified into a collision model schematic diagram as shown in fig. 2, and the relationship between the carrier plate conveying speed v, the roller angular speed w and the diameter D is wD/2; at the moment of collision between the carrier plate and the roller, the carrier plate and the transmission roller follow momentum conservation and energy conservation, the carrier plate can bounce upwards after collision, the relationship between the momentum component of the carrier plate vertically upwards along the y axis and the contact angle alpha (the tangential angle of the carrier plate and the transmission roller) is P carrier plate sin alpha, the smaller the contact angle is, the smaller the component of the carrier plate vertically upwards is, in other words, the smaller the vibration of the carrier plate in the vertical direction is, when the carrier plate is in contact with the transmission roller, the horizontal velocity component (wDcos alpha)/2 of the contact point is smaller than the velocity v of the carrier plate, and the carrier plate can also vibrate backwards in the direction opposite to the x axis after collision.

Based on the above defects and shortcomings, there is a need to improve the prior art and design a plate type transmission mechanism.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problem of providing a plate type transmission mechanism, wherein the arc chamfer angle design of a carrier plate and the movable design of a bidirectional bearing reduce the large-amplitude vibration caused by hard collision in the transmission process, thereby reducing the hidden crack and bad damage of a product caused by collision vibration in the transmission process.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a plate drive mechanism, this plate drive mechanism including the design have the support plate of specific arc chamfer and the transmission gyro wheel that two-way contrary mobilizable formula bearing that ends drove, the support plate sets up on transmission gyro wheel, the support plate advances end bottom design and has the arc chamfer, and the arc chamfer design is the round chamfer, or combines actual conditions design to be irregular arc chamfer, and the principle of design does: the starting position of the arc chamfer on the carrier plate is higher than the highest plane of the transmission roller array; the optimization of the arc chamfer takes the minimum contact angle alpha of the arc surface of the carrier plate and the roller as an optimization target, and the contact angle alpha is the included angle between the tangent of the contact point of the circular surface of the roller with the arc surface and the horizontal plane.

The contact angle alpha is reduced and is determined by the sizes of the carrier plate, the arc chamfer angle of the carrier plate and the outline size of the transmission roller; the vibration is reduced, and the size and the form of the arc chamfer of the carrier plate can be optimized by taking the minimum contact angle alpha as an optimization target according to the actual situation.

Preferably, the bidirectional non-return movable bearing conveniently provides acceleration and deceleration functions, a section of freely movable interval exists between two non-return turning periods of the bidirectional non-return movable bearing, the movable interval is 0.01-30 degrees, and the corresponding selection scheme of the free rotation angle during selection of the type of the bidirectional non-return movable bearing is designed to be the optimal angle according to the arc surface angle from the collision point of the support plate to the highest point of the roller.

Compared with the prior art, the utility model has the beneficial effects that:

the arc chamfer design of support plate and the mobile design of two-way bearing have reduced the vibration by a wide margin that hard collision in the transmission process caused to the product that has reduced in the transmission process because collision vibration leads to is hidden splits, damaged badly.

Drawings

Fig. 1 is a schematic side view of a plate type transmission mechanism according to the prior art.

Fig. 2 is a schematic diagram of a collision model between a driven carrier plate and a transmission bearing in a plate-type transmission in the prior art.

Fig. 3 is a schematic diagram of the collision between the arc-chamfered carrier plate and the driving roller of the plate-type driving mechanism.

Fig. 4 is a schematic structural view of a transmission roller driven by a bidirectional non-return movable bearing of a plate-type transmission mechanism.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and will thus define the scope of the utility model more clearly and clearly.

Referring to fig. 1 to 4, an embodiment of the present invention includes:

the utility model provides a plate drive mechanism, this plate drive mechanism is including the support plate 1 that the design has specific arc chamfer and the drive gyro wheel 3 that two-way contrary movable bearing 2 that ends drove, and support plate 1 sets up on drive gyro wheel 3, support plate 1 advances end bottom design and has the arc chamfer, and the arc chamfer design is round chamfer, or combines actual conditions to design for irregular arc chamfer, and the principle of design does: the starting position of the arc chamfer on the carrier plate 1 is higher than the highest plane of the array of the transmission rollers 3; the optimization of the arc chamfer takes the minimum contact angle alpha of the arc surface of the carrier plate and the roller as an optimization target, and the contact angle alpha is the included angle between the tangent of the contact point of the circular surface of the roller with the arc surface and the horizontal plane.

The contact angle alpha is reduced and is determined by the size of the carrier plate 1, the size of the arc chamfer of the carrier plate and the overall dimension of the transmission roller 3; the vibration is reduced, and the size and the form of the arc chamfer of the carrier plate can be optimized by taking the minimum contact angle alpha as an optimization target according to the actual situation.

The bidirectional reverse bearing is a bearing commonly used in the field of equipment, for example, the roller spring sheet type bidirectional reverse bearing provided by the utility model CN208702904U can also be a ball inclined wedge type bidirectional reverse bearing, and although the bidirectional reverse principle is different, the same is that, during bidirectional reverse turning, there is a section of free movement, which can make the bearing rotate freely in a short distance by a certain angle.

The bidirectional non-return movable bearing 2 is convenient to provide acceleration and deceleration functions, a section of freely movable interval exists between two non-return steering periods of the bidirectional non-return movable bearing 2, the movable interval is 0.01-30 degrees, and a free rotation angle corresponding selection scheme is designed to be an optimal angle according to the angle from a collision point of the support plate 1 to the cambered surface angle at the highest point of the roller when the type of the bidirectional non-return movable bearing 2 is selected.

When the plate type transmission mechanism works, when the transmission roller 3 is movable, the transmission roller 3 and the bidirectional non-return movable bearing 2 can be separated at a speed, when the carrier plate 1 collides with the transmission roller 3, the carrier plate 1 and the transmission roller 3 drive the transmission roller 3 to accelerate due to friction and the speed difference in the horizontal direction of the contact point of the transmission roller 3, the contact angle alpha is rapidly reduced until the contact angle is 0, under the condition, when the carrier plate 1 collides with the transmission roller 3, part of kinetic energy is transmitted to the outer roller of the bidirectional non-return movable bearing 2 to play a role of buffering, so that pulse type vibration is changed into vibration which is gradually increased or reduced, and the vibration in the transmission process of the carrier plate 1 is well improved.

According to the plate type transmission mechanism, the arc chamfer design of the support plate and the movable design of the bidirectional bearing reduce large-amplitude vibration caused by hard collision in the transmission process, so that product hidden crack and bad damage caused by collision vibration in the transmission process are reduced.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A plate-type transmission mechanism is characterized in that: this plate drive mechanism is including the design have the support plate of specific arc chamfer and the transmission gyro wheel that two-way contrary movable bearing that ends drove, and the support plate sets up on the transmission gyro wheel that two-way contrary movable bearing that ends drove, the support plate advances end bottom design and has the arc chamfer, and the size of dimension of arc chamfer is decided jointly by the size of support plate and transmission gyro wheel.

2. A plate transmission according to claim 1, wherein: the arc chamfer is a round chamfer or an irregular arc chamfer.

3. A plate transmission according to claim 1, wherein: the bidirectional non-return movable bearing conveniently provides acceleration and deceleration functions, and a section of freely movable interval exists in the two-way non-return movable bearing during two-time non-return steering periods.

4. A plate transmission according to claim 3, wherein: the freely movable interval is 0.01-30 deg.