Air knife assembly and air knife device

Abstract

An embodiment of the present application provides a wind knife assembly and a wind knife device, wherein the wind knife assembly includes a mounting base, a blowing structure connected to the mounting base, and a positioning structure connected to the blowing structure. The blowing structure is provided with an air inlet and an air outlet and defines a cavity internally. The air inlet and the air outlet are both connected to the cavity. By adding the positioning structure, the technical and experience barriers required for the operator can be removed, shortening the time for the operator to adjust the wind knife, improving the adjustment efficiency, and realizing precise control of the horizontality of the wind knife, the blowing angle, the offset tilt angle, and the center position of the wind knife blowing, thereby reducing the scrapping of adjustment materials, improving output, and reducing production costs.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic module production, and in particular to an air knife assembly and an air knife device. Background Art

[0002] Solder ribbon, also known as tinned copper ribbon or tin-coated copper ribbon, is divided into bus ribbon and interconnection strip. It is used to connect the solar cells of photovoltaic modules and plays an important role in conductivity and electricity collection. Solder ribbon is an important raw material in the welding process of photovoltaic modules. The quality of the solder ribbon will directly affect the current collection efficiency of the photovoltaic module and has a great impact on the power of the photovoltaic module. Tinning of the solder ribbon is an important link in the production process of photovoltaic solder ribbon.

[0003] Air knives are widely used in the industrial sector for dewatering and dust removal, such as removing dust and moisture from flat surfaces like steel plates and aluminum alloy profiles, removing moisture from the surfaces of beverage bottles and cans, removing impurities, dust, residual liquid, and moisture from outer packaging, and cleaning conveyor belts. Air knives are ideal for these applications when a compressed air supply is available. Existing strip tinning equipment primarily uses air knives to control coating thickness. Air knife adjustment directly impacts product thickness stability and coating quality. Current air knives used in strip tinning are conventional. Adjustment relies heavily on operator skill and experience (i.e., blind adjustment), requiring repeated or frequent adjustments to the air knife's position and angle. This requires high operator skill and experience, and the frequency of adjustments and scrapping is difficult to manage. This leads to lengthy air knife adjustment times and limited accuracy, severely hindering future intelligent and lean production requirements.

[0004] Therefore, it is urgent to propose a new air knife to solve the above problems. Summary of the Invention

[0005] In order to address the deficiencies of the prior art, the embodiments of the present application provide an air knife assembly and an air knife device to solve the problem that the adjustment process of the air knife in the prior art depends on the skill mastery and experience of the operator, and requires repeated or multiple adjustments to the position and angle of the air knife blowing tin to implement, which has high requirements on the skills and experience of the employees, and the adjustment frequency and scrapping are difficult to control, resulting in long air knife adjustment time and insufficient accuracy after adjustment.

[0006] In order to achieve the above objectives, the technical solutions adopted by this application to solve the technical problems are:

[0007] In the first aspect, the present application provides a wind knife assembly, which includes a mounting base, a blowing structure connected to the mounting base, and a positioning structure connected to the blowing structure. The blowing structure is provided with an air inlet and an air outlet and defines a cavity inside. The air inlet and the air outlet are both connected to the cavity.

[0008] In a specific embodiment, the cross-section of the end of the blowing structure where the air outlet is formed is triangular.

[0009] In a specific embodiment, the alignment structure is connected to one end of the blowing structure where the air outlet is provided, and a cross section of the alignment structure includes at least two sides perpendicular to each other.

[0010] In a specific embodiment, the cross-section of the alignment structure is a right triangle, and the hypotenuse of the right triangle is connected to the blowing structure.

[0011] In a specific embodiment, the thickness of the alignment structure is 1 to 7 mm, and preferably the thickness of the alignment structure is 4 mm.

[0012] In a specific embodiment, the blowing structure is provided with a slot, and the alignment structure is engaged in the slot.

[0013] In a specific embodiment, the air blowing structure includes a first wind blade and a second wind blade connected to each other, and the first wind blade and the second wind blade define the cavity inside.

[0014] In a specific embodiment, a first connection hole is formed on the mounting base, and the first connection hole is used to connect to a connection rod of an external device.

[0015] In a specific embodiment, a second connecting hole is further provided on the mounting base, and the second connecting hole is connected to the blowing structure via a bolt.

[0016] In a second aspect, the present application further provides an air knife device, which includes two air knife assemblies as described above, wherein the two air knife assemblies are arranged in a mirror image, and the product to be processed passes between the air outlets of the two air knife assemblies.

[0017] The beneficial effects of the technical solution provided by the embodiments of the present application are:

[0018] The air knife assembly and air knife device provided in the embodiments of the present application include a mounting base, an air blowing structure connected to the mounting base, and an alignment structure connected to the air blowing structure. The air blowing structure is provided with an air inlet and an air outlet and defines a cavity therein. The air inlet and the air outlet are both connected to the cavity. By adding the alignment structure, the technical and experience barriers required by the operator can be eliminated, the time for the operator to adjust the air knife can be shortened, the adjustment efficiency can be improved, and the horizontality, tin blowing angle, misalignment tilt angle, and tin blowing center position of the air knife can be precisely controlled, thereby reducing the scrapping of adjustment materials, improving output, and reducing production costs.

[0019] Furthermore, the wind knife device provided in the present application is achieved by combining the two above-mentioned wind knife assemblies after they are arranged in a mirror image, and the horizontality, tin blowing angle, and offset tilt angle of the two wind knife assemblies can be quickly adjusted through the alignment structure of the two wind knife assemblies, thereby shortening the adjustment time and improving the adjustment efficiency.

[0020] Not all products in this application need to have all the above effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 1 is a schematic diagram of the three-dimensional structure of the air knife assembly provided in an embodiment of the present application;

[0023] Figure 2 This is a schematic structural diagram of a view of an air knife assembly provided in an embodiment of the present application;

[0024] Figure 3 is a structural schematic diagram of another view of the air knife assembly provided in an embodiment of the present application;

[0025] Figure 4 This is a structural schematic diagram of a mounting base of an air knife assembly provided in an embodiment of the present application;

[0026] Figure 5 2 is a schematic structural diagram of another view of the mounting base of the air knife assembly provided in an embodiment of the present application;

[0027] Figure 6 Schematic diagram of the structure of the air blowing structure of the air knife assembly provided in an embodiment of the present application;

[0028] Figure 7This is a schematic structural diagram of a first wind blade of the wind knife assembly provided in an embodiment of the present application;

[0029] Figure 8 This is a schematic structural diagram of the second wind blade of the wind knife assembly provided in an embodiment of the present application;

[0030] Figure 9 This is a structural schematic diagram of a viewing direction of the alignment structure of the air knife assembly provided in an embodiment of the present application;

[0031] Figure 10 2 is a schematic structural diagram of another view of the alignment structure of the air knife assembly provided in an embodiment of the present application;

[0032] Figure 11 It is a structural schematic diagram of the air knife device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] As described in the background technology, the existing technology has an air knife for tinning solder strips. The adjustment process needs to rely on the operator's skill level and experience. It needs to repeatedly or multiple times adjust the position and angle of the air knife to implement the tinning. It requires high skills and experience of employees. The adjustment frequency and scrapping are difficult to control, resulting in long air knife adjustment time and insufficient accuracy after adjustment.

[0035] In order to solve one or more of the above-mentioned technical problems in the prior art, the present application creatively proposes a new air knife assembly and air knife device. By adding a positioning structure, the technical and experience barriers required by the operator are removed, and repeated groping and multiple adjustments are avoided. The time for the operator to adjust the air knife is shortened, and the adjustment efficiency is improved. The horizontality of the air knife, the tin blowing angle, the offset tilt angle, and the center position of the air knife tin blowing are precisely controlled, which reduces the scrapping of adjustment materials, increases output, and reduces production costs. It should be noted here that the air knife assembly and air knife device provided in the embodiment of the present application can be applied to the tinning process of photovoltaic welding ribbons as well as the tinning process of other wires.

[0036] The following describes in detail the air knife assembly and air knife device of the embodiments of the present application with reference to the accompanying drawings.

[0037] The air knife assembly provided in the embodiment of the present application is as follows: Figures 1 to 10As shown, the air knife assembly provided in the embodiment of the present application generally includes a mounting base 100, a blowing structure 200 and an alignment structure 300. Among them, the blowing structure 200 is connected to the mounting base 100, and the alignment structure 300 is connected to the blowing structure 200. The air knife assembly is connected to the external device through the mounting base 100. In the embodiment of the present application, the external device includes but is not limited to a solder strip tinning device and the like. An air inlet 210 and an air outlet 220 are provided on the blowing structure 200, and a cavity 230 is defined inside the blowing structure 200, and the air inlet 210 and the air outlet 220 are both connected to the cavity. The air inlet 210 is used to connect to an external air supply device to input gas into the cavity defined inside the blowing structure 200. The coating thickness of the solder strip product to be processed can be controlled by controlling the amount of air inlet.

[0038] As a preferred embodiment, in the present application, referring to Figure 4 and Figure 5 As shown, a first connecting hole 110 and a second connecting hole 120 are provided on the mounting base 100. The first connecting hole 110 is used to connect to a connecting rod (not shown) of an external device so as to connect the air knife assembly to the external device, and the external device includes but is not limited to a solder strip tinning device, etc. The second connecting hole 120 is used to connect to the blowing structure 200 through a bolt. Preferably, an internal thread matching the external thread on the connecting rod is provided inside the first connecting hole 110, and the first connecting hole 110 is threadedly connected to the connecting rod. Preferably, in order to improve the stability of the connection between the mounting base 100 and the blowing structure 200, the number of the second connecting holes 120 includes two or more. In the embodiment of the present application, two are taken as an example, and the two second connecting holes 120 are both provided with internal threads, and the threaded connection between the mounting base 100 and the blowing structure 200 is achieved through the two second connecting holes 120 and bolts. It should be noted here that in the embodiment of the present application, there is no specific restriction on the connection method between the mounting base 100 and the blowing structure 200 and / or external equipment. The above-mentioned threaded connection method is only an exemplary description. Any connection method can be used in this application without violating the inventive concept of the present application.

[0039] Reference Figures 6 to 8As shown, as a preferred embodiment, in the embodiment of the present application, the cross-section of the end of the blowing structure 200 where the air outlet 220 is located is triangular, and the end away from the air outlet 220 is rectangular. The air outlet 220 is located at the top of the triangular structure, and the air inlet 210 is located on the side wall of the blowing structure 200. The interior of the blowing structure 200 defines a cavity 230, and the air inlet 210 and the air outlet 220 are both connected to the cavity 230. The mounting base 100 is connected to the end of the blowing structure 200 away from the air outlet 220. A third connecting hole 240 is provided at a corresponding position on the end of the blowing structure 200 away from the air outlet 220. The mounting base 100 and the blowing structure 200 are threadedly connected via the second connecting hole 120, the third connecting hole 240, and a bolt. The number of third connecting holes 240 is the same as the number of second connecting holes 120, preferably two.

[0040] The blowing structure 200 in the embodiment of the present application can be integrally formed or formed by connecting two or more parts, which is not limited here. Figures 6 to 8 As shown, as a preferred embodiment, in the embodiment of the present application, the blowing structure 200 can be assembled from two parts, including a first wind blade 250 and a second wind blade 260. The first wind blade 250 is provided with a fourth connecting hole 270, and the second wind blade 260 is provided with a fifth connecting hole 280. The fourth connecting hole 270 and the fifth connecting hole 280 include but are not limited to threaded holes. The fourth connecting hole 270 and the fifth connecting hole 280 are connected by a connecting member such as a bolt, a screw, or a screw, thereby achieving the connection between the first wind blade 250 and the second wind blade 260. After the first wind blade 250 and the second wind blade 260 are connected, they jointly define a cavity 230 internally. Furthermore, in order to make the connection between the first wind blade 250 and the second wind blade 260 more stable, the aperture of the fifth connecting hole 280 is preferably larger than the aperture of the fourth connecting hole 270.

[0041] As a preferred embodiment, in the embodiment of the present application, the alignment structure 300 is connected to the end of the blowing structure 200 where the air outlet 220 is opened. The cross section of the alignment structure 300 includes at least two sides perpendicular to each other, that is, the alignment structure 300 has at least two surfaces perpendicular to each other. Figure 9 and Figure 10As shown, in the embodiment of the present application, the cross-section of the alignment structure 300 is a right triangle, and the hypotenuse of the right triangle is connected to the blowing structure 200. As an exemplary and non-restrictive explanation, the alignment structure 300 in the embodiment of the present application is a right triangle with a certain thickness, and the alignment structure 300 has at least a first surface 310, a second surface 320 and a third surface 330, the first surface 310 and the second surface 320 are perpendicular to each other, and the third surface 330 connected between the first surface 310 and the second surface 320 is connected to the blowing structure 200. By adding the alignment structure 300, the technical and experience barriers required by the operating personnel can be removed, the time for the operating personnel to adjust the air knife can be shortened, the adjustment efficiency can be improved, and the precise control of the horizontality of the air knife, the blowing angle, the misaligned tilt angle and the center position of the air knife blowing can be achieved, thereby reducing the scrap of adjustment materials, improving output and reducing production costs.

[0042] As a preferred embodiment, in the embodiment of the present application, the thickness of the alignment structure 300 is 1 to 7 mm, such as 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, etc., wherein the thickness of the alignment structure 300 is preferably 4 mm. The alignment structure 300 and the blowing structure 200 are preferably connected by a snap-fit ​​mechanism. In a specific implementation, a slot (not shown) is provided on the surface of the end of the blowing structure 200 where the air outlet 220 is provided, through which the alignment structure 300 is snap-fitted to the blowing structure 200.

[0043] As a preferred implementation, in the embodiment of the present application, the materials of the mounting base 100 , the blowing structure 200 , and the alignment structure 300 include but are not limited to aluminum.

[0044] Corresponding to the above-mentioned air knife assembly, an embodiment of the present application also provides a air knife device, which includes two air knife assemblies as described above. The two air knife assemblies are arranged in a mirror image, and the product to be processed passes between the air outlets of the two air knife assemblies.

[0045] Specifically, the products to be processed in the embodiments of the present application include but are not limited to welding strips, etc. It should be noted here that the air knife device provided in the implementation of the present application is particularly suitable for products such as flat welding strips and special-shaped welding strips.

[0046] The coating thickness and coating uniformity of the product of the solder strip to be processed mainly depend on the tin blowing position and tin blowing angle of the air knife, etc. The air knife device provided in the implementation of this application achieves a precise alignment function by setting a triangular alignment structure 300 above the blowing structure 200. The angle of the triangular alignment structure 300 determines the tin blowing angle of the air knife and the blowing offset tilt angle, etc. When adjusting the air knife device, the two air knife components are set in a mirror image and used in combination. The second surfaces 320 of the alignment structures 300 of the two air knife components are spliced ​​and installed, and the tin blowing angle is adjusted to the sum of the angles of the preset angles 340 of the two alignment structures 300, wherein the angle of the preset angle 340 is less than 90 degrees. During installation and adjustment, the first surfaces 310 of the two alignment structures 300 are flush and locked, which indicates that the air knives are level. Through this air knife device, the technical and experience barriers required by the operating personnel are eliminated, and the precise control of the tin blowing angle is achieved to avoid repeated groping and multiple adjustments, improve the efficiency of coating thickness adjustment, reduce the scrap of adjustment materials, increase output, and reduce production costs.

[0047] In the description of the present application, it should be understood that the terms "X-axis", "Y-axis", "Z-axis", "vertical", "parallel", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0049] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An air knife assembly, characterized in that: The wind knife assembly includes a mounting base, a blowing structure connected to the mounting base, and an alignment structure connected to the blowing structure. The blowing structure is provided with an air inlet and an air outlet and defines a cavity inside. The air inlet and the air outlet are both connected to the cavity. The cross-section of the end of the blowing structure where the air outlet is provided is triangular, and the end away from the air outlet is rectangular. The air outlet is provided at the top of the triangular structure, and the air inlet is provided on the side wall of the blowing structure. The alignment structure is connected to the end of the blowing structure where the air outlet is provided. The cross-section of the alignment structure includes at least two sides perpendicular to each other. The cross-section of the alignment structure is a right triangle, and the hypotenuse of the right triangle is connected to the blowing structure.

2. The air knife assembly according to claim 1, characterized in that: The thickness of the alignment structure is 1 to 7 mm.

3. The air knife assembly according to claim 1, characterized in that: The blowing structure is provided with a slot, and the alignment structure is engaged in the slot.

4. The air knife assembly according to claim 1, characterized in that: The air blowing structure includes a first wind blade and a second wind blade connected to each other, and the first wind blade and the second wind blade define the cavity inside.

5. The air knife assembly according to claim 1, characterized in that: The mounting base is provided with a first connection hole, and the first connection hole is used to connect with a connection rod of an external device.

6. The air knife assembly according to claim 5, characterized in that: The mounting base is further provided with a second connecting hole, which is connected to the blowing structure via a bolt.

7. An air knife device, characterized in that: The air knife device comprises two air knife assemblies according to any one of claims 1 to 6, wherein the two air knife assemblies are arranged in a mirror image, and the product to be processed passes between the air outlets of the two air knife assemblies.

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