Secondary trimming device for photovoltaic module

Abstract

The utility model discloses a secondary trimming device for a photovoltaic module, which comprises a trimming cutter and an air cylinder for driving the trimming cutter to extend out, and a purging pipeline for purging the trimming cutter when the trimming cutter retracts and resets is arranged above the air cylinder. The blowing pipeline is additionally arranged above the air cylinder, the trimming cutter is blown after trimming is finished, adhesive tape attachment to the trimming cutter is effectively reduced, adhesive tape attachment to the trimming cutter is reduced, the cleaning operation difficulty is reduced, and the assembly re-cleaning frequency is reduced.

Description

Technical Field

[0001] The utility model relates to a photovoltaic component processing device, in particular to a photovoltaic component secondary edge cutting device. Background Art

[0002] The edge trimming of photovoltaic modules is divided into primary edge trimming and secondary edge trimming. During the primary edge trimming, the rubber strip moves away from the photovoltaic module with the edge trimming knife. When the edge trimming knife reaches the four corners of the photovoltaic module, some rubber strips are left for secondary edge trimming. The purpose of secondary edge trimming is to prevent the primary edge trimming from causing explosion. During the secondary edge trimming, the edge trimming knife extends one end of the distance in advance to the front end of the residual rubber strip, which fits the four corners of the module at right angles. As the edge trimming knife is retracted, the residual butyl rubber strip is removed by the edge trimming knife. The butyl rubber strip is easy to adhere to the edge trimming knife. If the rubber strip is too attached, it is easy to get caught in the belt and pulley, resulting in a reduction in the service life of equipment spare parts, module explosion and other abnormalities. Utility Model Content

[0003] Purpose of the utility model: The purpose of the utility model is to provide a secondary edge trimming device for photovoltaic modules that helps to clean attached adhesive strips.

[0004] Technical solution: The utility model discloses a photovoltaic module secondary edge trimming device, which comprises an edge trimming knife and a cylinder for driving the edge trimming knife to extend. A purge pipeline is provided above the cylinder for purge the edge trimming knife when the edge trimming knife retracts and resets.

[0005] Preferably, the outlet end of the purge pipeline is parallel to the length direction of the edge of the trimming knife. The airflow is perpendicular to the residual rubber strip, effectively blowing off the adhesive strip on the trimming knife.

[0006] Preferably, the air source of the purge pipeline is the same as the air source of the driving cylinder. The purge pipeline is a branch air path of the secondary trimming main air path, and the main air path supplies air to the cylinder, so that the cylinder performs the trimming action and is diverted from the main air path, without adding an additional air source device.

[0007] Preferably, the purge pipeline is connected in series with a solenoid valve for controlling the on-off of the purge pipeline.

[0008] Preferably, the solenoid valve is connected to an in-position switch electrical signal for detecting the retraction and resetting of the trimming knife. The in-position switch detects the resetting of the trimming knife and gives a signal to the solenoid valve to open the purge pipeline, purge the trimming knife, and cause the rubber strip to fall off.

[0009] Preferably, there are no less than two purge pipelines, a confluence pipeline is provided at the inlet end of the purge pipeline, and the solenoid valve is provided on the confluence pipeline.

[0010] Preferably, in order to prevent the cylinder's own movement from affecting the purge pipeline and prevent the purge pipeline from shifting, the photovoltaic module secondary edge trimming device includes a shell arranged outside the cylinder, and the purge pipeline passes through the shell and is fixed above the blade of the cylinder edge trimming knife.

[0011] Beneficial effects: Compared with the prior art, the utility model has the following advantages: 1. Cleaning the rubber strips attached to the trimming knife reduces the difficulty of cleaning operations and reduces the frequency of re-cleaning of components; 2. Reducing the workload: before the improvement, two people were required for pre-cleaning on a single line and a single shift, but after the improvement, only one person is required for pre-cleaning on a single line and a single shift; 3. Improving the service life and one-time pass rate of equipment spare parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of a secondary edge trimming device for photovoltaic modules to eliminate the need for a shell;

[0013] Figure 2 This is a schematic diagram of the connection relationship of the various components of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the secondary edge trimming device for photovoltaic modules. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further described below in conjunction with the accompanying drawings.

[0016] like Figure 1 , which is a structural schematic diagram of a secondary edge trimming device for a photovoltaic module disclosed in the utility model. The secondary edge trimming is mainly composed of a cylinder 1, an edge trimming knife 3 and a purge pipeline 2. There are two cylinders 1, and the telescopic / sliding directions of the two cylinders 1 are respectively parallel to the two right-angled sides of the photovoltaic module 6. The edge trimming knife 3 is installed at the output end of the cylinder 1. The slider at the output end of the cylinder 1 slides or the piston rod extends to drive the edge trimming knife 3 to move forward and backward to cut the residual rubber strip at the angle of the photovoltaic module 6.

[0017] The purge pipe 2 is arranged above the cylinder 1, the output end of the cylinder 1 is in the initial state (when the slider has not slid out or the piston rod has retracted and reset), and the outlet of the purge pipe 2 is just above the edge of the trimming knife 3. The gas at the outlet of the purge pipe 2 can immediately purge the edge of the trimming knife 3 at the end of the secondary trimming, so as to cause the butyl rubber strip adhered to the trimming knife 3 to fall off. In order to blow off the rubber strip adhered to the edge of the trimming knife 3 to the greatest extent, the outlet end of the purge pipe 3 is arranged vertically, that is, it is arranged to be parallel to the length direction of the edge of the trimming knife 2.

[0018] like Figure 2The inlet end of the purge line 2 is connected to the main air circuit of the driving cylinder 1, that is, the purge line 2 is a branch of the main air circuit that drives the secondary trimming, and the diverted part of the main air circuit is used for purge, so as to save the extra air source. In order to effectively purge the trimming knife at the end of trimming, the purge line 2 is connected in series with a solenoid valve 4 for controlling the on and off of the purge line 2. The solenoid valve 4 is a prior art and will not be described here. In order to realize automatic control, the solenoid valve 4 is connected to the electrical signal of the in-place switch (prior art, not shown) for detecting the retraction and reset of the cylinder 1. When the in-place switch detects that the cylinder 1 is reset, it gives a signal to the solenoid valve 4, and the purge line 2 is turned on to purge the trimming knife.

[0019] There are two cylinders 1 used in a right-angle secondary chamfering device of the photovoltaic module 6, and corresponding to the cylinder 1, there are also two purge pipes 2 at a right angle; the four right angles of the photovoltaic module 6 are divided into two groups, and the inlet ends of the four purge pipes in each group are converged through the confluence pipe 5 and then connected to the main gas circuit. The solenoid valve 4 is arranged on the confluence pipe 5.

[0020] like Figure 3 A protective shell 7 is provided outside the secondary chamfering device, and a transparent window is provided on the top of the shell 7. The outlet end of the purge pipe 2 passes through the window and is fixed above the cylinder 1 to prevent the operation of the cylinder 1 from affecting the purge pipe 2. It is arranged on the window to facilitate adjustment of the purge pipe 2 so that it is aligned with the cylinder 1, and the length of the purge pipe 2 can also be reduced.

Claims

1. A photovoltaic module secondary edge trimming device, comprising an edge trimming knife (3) and a cylinder (1) for driving the edge trimming knife to extend, characterized in that: A purge pipeline (2) for blowing the edge trimming knife (3) when the edge trimming knife (3) is retracted and reset is provided above the cylinder (1).

2. The photovoltaic module secondary edge trimming device according to claim 1, characterized in that: The outlet end of the purge pipeline (2) is parallel to the length direction of the blade of the edge trimming knife (3).

3. The photovoltaic module secondary edge trimming device according to claim 1, characterized in that: The gas source of the purge pipeline (2) is the same as the gas source of the driving cylinder (1).

4. The photovoltaic module secondary edge trimming device according to claim 3, characterized in that: The purge pipeline (2) is connected in series with a solenoid valve (4) for controlling the on / off of the purge pipeline (2).

5. The photovoltaic module secondary edge trimming device according to claim 4, characterized in that: The electromagnetic valve (4) is connected to an electrical signal of an in-position switch for detecting the retraction and reset of the edge trimming knife.

6. The photovoltaic module secondary edge trimming device according to claim 4, characterized in that: There are no less than two purge pipelines (2), a confluence pipeline (5) is provided at the inlet end of the purge pipeline (2), and the solenoid valve is provided on the confluence pipeline (5).

7. The photovoltaic module secondary edge trimming device according to claim 1, characterized in that: The photovoltaic module secondary edge trimming device further comprises a shell (7) arranged outside the cylinder (1), and the purge pipeline (2) passes through the shell (7) and is fixed above the blade of the edge trimming knife of the cylinder (1).

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