Punching device and photovoltaic adhesive film cutting machine

Abstract

The utility model relates to a punching device and a photovoltaic adhesive film cutting machine. The punching device comprises a punching mechanism and a scrap removing mechanism. The punching mechanism comprises a punching cutter and a punching seat used for supporting an object to be punched, the punching cutter and the punching seat are oppositely arranged, the punching seat is provided with an avoiding hole, and the punching cutter can move in the direction close to the punching seat so that the punching cutter can be inserted into the avoiding hole to punch the object to be punched. And the chipping removing mechanism is used for eliminating static electricity of the punching cutter and purging chippings adsorbed on the punching cutter. After punching is completed, the chipping removing mechanism can eliminate static electricity of the punching cutter, adsorption of the punching cutter to chippings is reduced, and therefore most of the chippings can fall off from the punching cutter. And then, the chipping removing mechanism can also purge the punching cutter so as to purge chippings which do not fall off from the punching cutter. Thus, through the arrangement of the chipping removing mechanism, the problem of chipping residue can be solved, degradation of the photovoltaic module caused by chipping residue is avoided, and the production quality of the photovoltaic module is ensured.

Description

Technical Field

[0001] This application relates to the field of photovoltaic film cutting technology, and in particular to a punching device and a photovoltaic film cutting machine. Background Technology

[0002] A single-glass module is a photovoltaic module consisting of solar cells, front glass, and a backsheet. To improve the power generation efficiency of a single-glass module, a white film is usually placed between the solar cells and the backsheet. The white film can increase the reflectivity of light, allowing more light to be reflected onto the solar cells.

[0003] During production, a roll of white film is cut to specifications and laid on the back of the solar cell. Since the back of the solar cell has busbar leads, through holes need to be made in the white film at the corresponding positions for the busbar leads to pass through. Typically, a punching device is used to punch holes in the white film to create these through holes. However, due to electrostatic adsorption generated by the punching blade during the high-frequency punching process, debris adsorbed on the punching blade adheres to the newly punched white film, causing degradation of the single-glass module and thus affecting the production quality of the single-glass module. Utility Model Content

[0004] Therefore, it is necessary to provide a punching device to avoid the degradation of photovoltaic modules due to debris residue and to ensure the production quality of photovoltaic modules.

[0005] In a first aspect, this application provides a punching device, comprising:

[0006] A punching mechanism, comprising a punching cutter and a punching seat for supporting a workpiece to be punched, wherein the punching cutter and the punching seat are disposed opposite to each other, the punching seat is provided with a clearance hole, and the punching cutter is movable toward the punching seat to insert into the clearance hole and punch the workpiece to be punched; and

[0007] A debris removal mechanism is provided to eliminate static electricity from the punching tool and blow away debris from the punching tool.

[0008] In one embodiment, the punching cutter has a punching port at one end facing the punching seat; the punching cutter also has a ventilation channel and an air inlet, the ventilation channel being connected to the air inlet and the punching port; the debris removal mechanism includes an air blowing assembly, the air blowing assembly being connected to the air inlet, and the air blowing assembly being used to blow gas through the air inlet and the ventilation channel to the wall of the punching port.

[0009] In one of the embodiments, the air blowing assembly comprises an air source for providing compressed air, a pipeline for communicating the air source with the air inlet, and an air ionizer arranged in the pipeline for ionizing the compressed air to form ionized compressed air.

[0010] In one of the embodiments, the air blowing assembly further comprises a flow regulating member arranged in the pipeline.

[0011] In one of the embodiments, the punching device further comprises a control module communicatively connected with the flow regulating member; when the punching knife is inserted into the escape hole, and / or when the punching knife is moved to a preset position away from the punching seat, the control module controls the flow regulating member to open.

[0012] In one of the embodiments, the punching device further comprises a material collecting container provided with a material collecting cavity in communication with the escape hole.

[0013] In one of the embodiments, the punching device further comprises a suction accessory arranged in the material collecting container, the suction accessory being used for sucking the debris of the hole wall of the escape hole into the material collecting cavity, and for sucking the debris of the outer surface of the punching knife into the material collecting cavity when the punching knife is located in the escape hole.

[0014] In one of the embodiments, the punching device further comprises a support frame, the punching knife and the punching seat are arranged in the support frame, and the debris removing mechanism further comprises a grounding wire for connecting with the ground, the grounding wire being in conductive connection with the support frame.

[0015] In one of the embodiments, the punching mechanism further comprises a driving member arranged in the support frame and connected with the punching knife, the driving member being used for driving the punching knife to move towards or away from the punching seat.

[0016] In the second aspect, the application further provides a photovoltaic adhesive film cutting machine comprising the above punching device.

[0017] The punching device and the photovoltaic adhesive film cutting machine described above, after the punching is completed, the debris removing mechanism can eliminate the static electricity of the punching knife, reduce the adsorption of the punching knife to the debris, so that most of the debris can fall off from the punching knife. Then, the debris removing mechanism can also blow the punching knife to blow the debris that does not fall off from the punching knife. In this way, by arranging the debris removing mechanism, the problem of debris residue can be solved, the degradation of the photovoltaic assembly caused by the debris residue can be avoided, and the production quality of the photovoltaic assembly can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 1 is a schematic view of a punching device according to an embodiment of the present application.

[0019] Figure 2 Fig. 2 is a schematic view of a punching device according to another embodiment of the present application. Figure 1 Fig. 3 is a schematic view of a punching device according to another embodiment of the present application.

[0020] Brief Description of the Drawings

[0021] 10, punching mechanism; 11, punching knife; 111, punching port; 112, ventilation channel; 113, air inlet; 12, punching seat; 121, avoiding hole; 13, driving member; 20, debris removing mechanism; 21, air blowing assembly; 211, air source; 212, air ionizer; 213, pipeline; 215, flow adjusting member; 22, grounding wire; 30, support frame; 31, upper beam; 311, sliding block; 32, lower beam; 33, support column; 40, adhesive film. DETAILED DESCRIPTION

[0022] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways other than those described herein without departing from the spirit of the present application, and it is understood that similar modifications can be made by those skilled in the art in the light of the foregoing description. Therefore, it is not intended to limit the present application to the following specific embodiments disclosed below.

[0023] Referring to Figure 1 and Figure 2 The punching device provided by an embodiment of the present application comprises a punching mechanism 10. The punching mechanism 10 comprises a punching knife 11, a driving member 13 and a punching seat 12 for supporting an adhesive film 40. The punching knife 11 is arranged opposite to the punching seat 12, and the punching seat 12 is provided with an avoiding hole 121 for avoiding the punching knife 11. The driving member 13 is connected with the punching knife 11, and is used for driving the punching knife 11 to move towards the punching seat 12, so that the punching knife 11 is inserted into the avoiding hole 121 to punch the adhesive film 40.

[0024] Optionally, the driving member 13 is a pneumatic cylinder. Of course, in other embodiments, the driving member 13 can also be an electric cylinder, a hydraulic cylinder, a linear module, etc., and is not limited thereto.

[0025] However, the punching knife 11 will generate static adsorption in the process of high-frequency punching, causing the debris to stick to the punching knife 11. When the punching knife 11 punches the next adhesive film 40, the debris on the punching knife 11 will stick to the adhesive film 40, affecting the production quality of the photovoltaic module.

[0026] Therefore, in the embodiment, the punching device further comprises a debris removing mechanism 20. The debris removing mechanism 20 is used to eliminate the static electricity of the punching knife 11 and blow off the debris on the punching knife 11.

[0027] After the punching is completed, the debris removing mechanism 20 can eliminate the static electricity of the punching knife 11, reduce the adsorption of the punching knife 11 to the debris, so that most of the debris can fall off from the punching knife 11. Then, the debris removing mechanism 20 can also blow off the punching knife 11 to blow off the debris that does not fall off from the punching knife 11. In this way, by arranging the debris removing mechanism 20, the problem of debris residue can be solved, the degradation of the photovoltaic module caused by the debris residue can be avoided, the production quality of the photovoltaic module can be ensured, the workload of the operator for cleaning the punching knife 11 can be reduced, the time for stopping the punching device for cleaning can be reduced, and the production efficiency can be improved.

[0028] In one embodiment, referring to Figure 1 , the punching device further comprises a support frame 30, and the driving member 13 and the punching seat 12 are mounted on the support frame 30. In this way, the support frame 30 provides a mounting position for the driving member 13 and the punching seat 12, facilitating the installation of the driving member 13 and the punching seat 12.

[0029] Specifically, referring to Figure 1 , the support frame 30 comprises an upper cross beam 31, a lower cross beam 32 and a support column 33, the support column 33 is vertically arranged, the upper cross beam 31 is connected with the upper end of the support column 33, and the lower cross beam 32 is connected with the lower end of the support column 33.

[0030] In one embodiment, referring to Figure 1 , the punching mechanism 10 is provided with at least two, and the driving members 13 of all the punching mechanisms 10 are movably arranged on the support frame 30. Specifically, the driving member 13 is movably arranged on the upper cross beam 31 through a sliding block 311 and can move along the length direction of the upper cross beam 31. During punching, the driving member 13 can move along the length direction of the upper cross beam 31, so that the distance between the adjacent two driving members 13 can be adjusted according to the differences in the version of the adhesive film 40 and the process, so as to adjust the punching distance.

[0031] In one embodiment, referring to Figure 2 , the debris removing mechanism 20 further comprises a grounding wire 22. The grounding wire 22 is conductively connected with the support frame 30. Optionally, the grounding wire 22 is a copper wire with a square of 1.5. By using the grounding wire 22, the support frame 30 is connected with the ground to form a low-impedance conductive path, so that the static electricity can be quickly led to the ground to eliminate the accumulation of static electricity, so that the debris adsorbed on the punching knife 11 and the punching seat 12 can be more easily fallen off, and meanwhile the normal use of the punching device will not be affected. In addition, the grounding wire 22 is simple to install, does not need to make large modifications to the punching device, and has strong practicability.

[0032] Of course, in other embodiments, the ground wire 22 can also be conductively connected with the slider 311.

[0033] In one embodiment, the punching device further comprises a debris collection container. Specifically, the debris collection container is detachably arranged below the punching seat 12. The debris collection container is provided with a debris collection cavity, which is in communication with the avoiding hole 121. During punching, the debris removal mechanism 20 blows the punching knife 11, so that the debris on the punching knife 11 enters the debris collection cavity through the avoiding hole 121 for collection.

[0034] Further, the punching device further comprises a suction accessory for sucking the debris in the avoiding hole 121 into the debris collection cavity.

[0035] Optionally, the suction accessory comprises a motor arranged in the debris collection container. During punching, the motor is started to generate negative pressure, so that the debris in the avoiding hole 121 is sucked into the debris collection cavity under the action of the negative pressure, and the debris on the outer surface of the punching knife 11 located in the avoiding hole 121 is also sucked into the debris collection cavity under the action of the negative pressure.

[0036] Of course, in other embodiments, the suction accessory can also be a fan or the like, without being limited thereto.

[0037] In one embodiment, referring to Figure 2 , the punching knife 11 is provided with a punching port 111 at one end thereof facing the punching seat 12, the punching port 111 being used for punching the adhesive film 40. The punching knife 11 is further provided with a ventilation channel 112 and an air inlet 113, the ventilation channel 112 being in communication with the air inlet 113 and the punching port 111.

[0038] Further, referring to Figure 2 , the debris removal mechanism 20 comprises a blowing assembly 21. The blowing assembly 21 is in communication with the air inlet 113, and is used for blowing gas into the ventilation channel 112 through the air inlet 113. After one punching is completed, the blowing assembly 21 is started to blow gas into the air inlet 113, and the gas reaches the punching port 111 through the ventilation channel 112 to blow the wall of the punching port 111, so as to blow the debris remaining on the wall of the punching port 111 into the avoiding hole 121 for recovery.

[0039] In one embodiment, referring to Figure 2 , the blowing assembly 21 is used for blowing ionized compressed gas to the wall of the punching port 111 through the air inlet 113 and the ventilation channel 112. In this way, the ionized gas can not only neutralize the static electricity of the punching knife 11, but also blow the debris adhered to the wall of the punching port 111 into the avoiding hole 121.

[0040] Further, referring to Figure 2The blowing assembly 21 comprises a gas source 211 and an air ionizer 212. The gas source 211 is configured to provide compressed air, and the gas source 211 is in communication with the air inlet 113 through a pipeline 213. The air ionizer 212 is arranged in the pipeline 213, and the air ionizer 212 is configured to ionize the compressed air to form ionized compressed air.

[0041] It should be noted that the gas source 211 can be ionized compressed air cooled by a cold press and a drying machine in a workshop. Specifically, the temperature of the ionized compressed air is 12-25°C, and optionally, the temperature of the ionized compressed air is 12-15°C, or the temperature of the ionized compressed air is 15-25°C. In this range, the ionized compressed air can reduce the adhesion of the adhesive film 40 itself, so that the adhesive film 40 is not easy to stick to the punching knife 11. The humidity of the ionized compressed air is 40%-60%. The ionized compressed air is 0.6-0.9 MPa, so that the debris can be better blown off and ensure that the debris can be completely removed.

[0042] In one embodiment, referring to Figure 2 The blowing assembly 21 further comprises a flow regulating member 215 arranged in the pipeline 213. During punching, the flow regulating member 215 can be adjusted according to the amount of debris. When there is more debris, the flow regulating member 215 is adjusted to increase the flow of ionized compressed air, so that the debris can be better blown off and ensure that the debris can be completely removed. When there is less debris, the flow regulating member 215 is adjusted to reduce the flow of ionized compressed air, so that the debris can be completely blown off and the ionized compressed air can be saved.

[0043] Optionally, the flow regulating member 215 is a vacuum generator. The vacuum generator can not only adjust the flow of ionized compressed air, but also control the on-off of the ionized compressed air.

[0044] In one embodiment, the punching device further comprises a control module. The control module is in communication with the flow regulating member 215, and when the punching knife 11 is inserted into the avoiding hole 121, the control module controls the flow regulating member 215 to open.

[0045] During punching, when the driving member 13 drives the punching knife 11 to move towards the punching seat 12 until the punching knife 11 is inserted into the avoiding hole 121, the control module controls the flow regulating member 215 to open, and the compressed ionized air enters the ventilation channel 112 through the air inlet 113 to blow the wall of the punching port 111, thereby removing the debris adsorbed on the wall of the punching port 111. At the same time, when the punching knife 11 is inserted into the avoiding hole 121, the debris on the outer surface of the punching knife 11 can be adsorbed into the collecting cavity under the adsorption of the suction member. In this way, the debris that does not fall off the punching knife 11 can be completely removed.

[0046] When the punching is completed, the driving member 13 drives the punching knife 11 to move away from the punching seat 12 until the driving member 13 reaches the maximum movement stroke, the control module controls the flow adjusting member 215 to open, and the compressed ion gas sweeps the punching seat 12 again through the punching knife 11 without adsorbing the debris, which can not only sweep the debris on the surface of the punching seat 12 clean, but also eliminate the static electricity on the surface of the punching seat 12.

[0047] The application also provides a photovoltaic adhesive film 40 cutting machine comprising the punching device of any of the above embodiments.

[0048] After the punching is completed, the debris removing mechanism 20 can eliminate the static electricity of the punching knife 11 and reduce the adsorption of the punching knife 11 to the debris, so that most of the debris can fall off from the punching knife 11. Then, the debris removing mechanism 20 can also sweep the punching knife 11 to sweep the debris that does not fall off from the punching knife 11. In this way, by arranging the debris removing mechanism 20, the problem of residual debris can be solved, the degradation of the photovoltaic module caused by the residual debris can be avoided, the production quality of the photovoltaic module can be ensured, the workload of the operator to clean the punching knife 11 can be reduced, the downtime for cleaning the punching device can be reduced, and the production efficiency can be improved.

[0049] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0050] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0051] In this application, unless otherwise clearly indicated and limited, if there are terms such as "mount", "connect", "connect", "fix", etc., these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0052] In this application, unless otherwise clearly indicated and limited, if there are terms such as "mount", "connect", "connect", "fix", etc., these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0053] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation.

[0054] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combination of the technical features does not exist Contradiction, it should be considered within the scope of the present application.

[0055] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be construed as limiting the scope of the patent application. It should be noted that for those skilled in the art, without departing from the concept of the present application, some modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A punching device, characterized in that The punch device comprises: a punching mechanism (10) comprising a punching knife (11) and a punching seat (12) for supporting a material to be punched, the punching seat (12) being arranged opposite to the punching knife (11), the punching seat (12) being provided with a clearance hole (121), the punching knife (11) being capable of moving towards the punching seat (12) so as to be inserted into the clearance hole (121) to punch the material to be punched; and a debris removal mechanism (20) for eliminating static electricity of the punching knife (11) and blowing away debris on the punching knife (11).

2. The piercing apparatus of claim 1, wherein, An end of the punching knife (11) towards the punching seat (12) is provided with a punching port (111), the punching knife (11) is further provided with a ventilation channel (112) and an air inlet (113), the ventilation channel (112) being in communication with the air inlet (113) and the punching port (111); the debris removal mechanism (20) comprises a blowing assembly (21) in communication with the air inlet (113), the blowing assembly (21) being used for blowing gas through the air inlet (113) and the ventilation channel (112) to the wall of the punching port (111).

3. The piercing apparatus of claim 2, wherein, The blowing assembly (21) comprises a gas source (211) for providing compressed gas, the gas source (211) being in communication with the air inlet (113) through a pipeline (213), and an air ionizer (212) arranged in the pipeline (213), the air ionizer (212) being used for ionizing the compressed gas to form ionized compressed gas.

4. The piercing apparatus of claim 3, wherein, The blowing assembly (21) further comprises a flow adjusting member (215) arranged in the pipeline (213).

5. The piercing apparatus of claim 4, wherein, The punch device further comprises a control module in communication connection with the flow adjusting member (215). When the punching knife (11) is inserted into the clearance hole (121), and / or when the punching knife (11) moves to a preset position away from the punching seat (12), the control module controls the flow adjusting member (215) to open.

6. The punching apparatus according to claim 1, wherein The punch device further comprises a material collecting container provided with a material collecting cavity in communication with the clearance hole (121).

7. The piercing apparatus of claim 6, wherein, The punch device further comprises a suction accessory arranged on the material collecting container, the suction accessory being used for sucking debris on the wall of the clearance hole (121) into the material collecting cavity, and the suction accessory being further used for sucking debris on the outer surface of the punching knife (11) into the material collecting cavity when the punching knife (11) is located in the clearance hole (121).

8. The punching apparatus according to any one of claims 1 to 7, characterized in that The punch device further comprises a support frame (30), the punching knife (11) and the punching seat (12) are arranged on the support frame (30). The debris removing mechanism (20) further comprises a grounding wire (22) for connecting with the ground, the grounding wire (22) being in conductive connection with the support frame (30).

9. The piercing apparatus of claim 8, wherein, The punching mechanism (10) further comprises a driving member (13) arranged on the support frame (30), the driving member (13) being connected with the punching knife (11), and the driving member (13) being used for driving the punching knife (11) to move towards or away from the punching seat (12).

10. A photovoltaic tape cutting machine characterized by, A punching device comprising any one of the punching devices according to claims 1 to 9.

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