Limiting mechanism for solder strip base material feed and solder strip base material feed device

Abstract

This application discloses a limiting mechanism and a welding strip substrate feeding device for feeding welding strip substrate. The limiting mechanism includes at least one limiting unit. The limiting unit abuts against the separation point of the welding strip substrate on the inner circumferential surface of the welding strip base material roll to limit the height of the pulled-out welding strip substrate from the separation point on the inner circumferential surface of the welding strip base material roll, thereby preventing the welding strip substrate on the inner ring of the welding strip base material roll from slipping. This application effectively avoids the problem of wire jamming during welding strip substrate feeding caused by the collapse of the inner ring of the welding strip base material roll, effectively preventing abnormal wire breakage of the welding strip substrate, thereby improving production efficiency and yield.

Description

Technical Field

[0001] This application relates to the field of photovoltaic cell production technology, and in particular to a limiting mechanism and a feeding device for welding strip substrate. Background Technology

[0002] Solder ribbon, also known as tin-plated copper ribbon or tin-coated copper ribbon, is an important component of photovoltaic modules, used for connections in photovoltaic cell encapsulation, primarily serving to connect electrical conductors. During photovoltaic cell production, solder ribbon substrate is typically handled and stored in rolls. One end of the roll is pulled and unloaded by a traction mechanism to the tinning station. Currently, solder ribbon substrate mainly uses rolled copper wire or copper strip substrate.

[0003] The feeding process of the welding strip substrate is passive feeding, starting from the inner circle of the welding strip base material roll and feeding outwards. However, when feeding the inner circle of the roll, the feeding is done from bottom to top. The welding strip substrate above the inner circle of the roll loses support due to the substrate below being pulled out, and is prone to collapse, pressing down on or even jamming the welding strip substrate pulled out below. This causes jamming during the feeding process, which can easily lead to abnormal wire breakage of the welding strip substrate, reduce production efficiency, and result in a low yield of photovoltaic cells. Utility Model Content

[0004] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a limiting mechanism and a welding strip substrate feeding device for feeding welding strip substrate, in order to solve the problem that the inner ring of the welding strip base material roll collapses during the current welding strip substrate feeding process, causing feeding jamming, which leads to abnormal welding strip substrate breakage, reducing production efficiency and yield.

[0005] In a first aspect, this application provides a limiting mechanism for feeding solder strip substrate, including at least one limiting unit;

[0006] The limiting unit abuts against the separation point of the solder strip substrate on the inner circumference surface of the solder strip base material roll to limit the height of the separation point between the pulled-out solder strip substrate and the inner circumference surface of the solder strip base material roll, thereby preventing the solder strip substrate on the inner ring of the solder strip base material roll from slipping.

[0007] In one embodiment of the limiting mechanism for feeding the welding strip substrate described above, the limiting unit includes a limiting tubular member movably sleeved on the welding strip substrate pulled out from the welding strip base material roll.

[0008] The limiting tubular component is movably sleeved on the weld strip substrate pulled out of the weld strip base material roll. Under the influence of gravity, it can always remain at the separation point between the pulled weld strip substrate and the inner circumference of the weld strip base material roll, so that it can always abut against the separation point of the weld strip substrate on the inner circumference of the weld strip base material roll during the process of pulling the weld strip substrate.

[0009] In one embodiment of the above-described limiting mechanism for feeding solder strip substrate, the limiting tubular member comprises at least one spiral tube wound helically around the solder strip substrate being pulled out of the solder strip base material roll; and / or,

[0010] At least two hollow straight pipes connected end to end.

[0011] The spiral tube is wound around the weld strip base material roll that is being pulled out, which facilitates installation and allows for adjustment of the overall length by pulling. The hollow straight tube connected end to end can better adapt to the curvature of the pulled weld strip base material when the length of the hollow straight tube is small.

[0012] In one embodiment of the limiting mechanism for feeding the welding strip substrate described above, the hollow straight tube is connected end to end by an elastic element.

[0013] Hollow straight tubes are connected end to end by elastic elements, which allows for greater bending freedom at the connection point and better adapts to the curvature of the weld strip substrate under different conditions.

[0014] In one embodiment of the limiting mechanism for feeding the welding strip substrate described above, the hollow straight tube is detachably connected by a connector.

[0015] The hollow straight tube is detachable, which facilitates connection and disassembly and allows for easy adjustment of the overall length of the limiting tubular component.

[0016] In one embodiment of the limiting mechanism for feeding the welding strip substrate described above, the hollow straight tube has an axial length of less than or equal to 1.5 cm.

[0017] When the length of the hollow straight tube in its axial direction is greater than 1.5cm, its adaptability to the curvature of the pulled welding strip substrate is low.

[0018] In one embodiment of the limiting mechanism for feeding the welding strip substrate described above, the weight of the limiting tubular member is greater than or equal to 0.1 kg.

[0019] The limiting tubular component weighs 0.1 kg or more and can stably abut against the separation point of the welding strip substrate on the inner ring of the welding strip base material roll under the action of gravity.

[0020] In one embodiment of the limiting mechanism for feeding the solder strip substrate described above, the limiting tubular member includes a metal tubular member and an elastic layer covering the outer surface of the metal tubular member.

[0021] The limiting tubular component includes a metal tubular component and an elastic layer covering the outer surface of the metal tubular component. The metal tubular component ensures that the limiting tubular component has sufficient weight to stably abut against the separation point of the welding strip substrate on the inner ring of the welding strip base material roll under the action of gravity, and has high hardness and is not easily deformed. The elastic layer can prevent the metal layer from scratching the surface of the welding strip substrate, thus preventing wear on the surface of the welding strip substrate.

[0022] Secondly, this application also provides a welding strip substrate feeding device, the device including a traction mechanism and a limiting mechanism for feeding welding strip substrate as described in any one of the first aspects, the traction mechanism being used to fix the free end of the welding strip substrate of the welding strip base material roll and pull it to the target station.

[0023] The traction mechanism pulls the welding strip substrate outward, and the limiting mechanism restricts the height at which the pulled welding strip substrate separates from the inner circumference of the welding strip base material roll, preventing the welding strip substrate in the inner circle of the welding strip base material roll from slipping. This ensures smooth discharge of the welding strip substrate, effectively avoids jamming during welding strip substrate discharge, and improves the discharge efficiency of the welding strip substrate.

[0024] In one embodiment of the above-described welding strip substrate feeding device, the device further includes a fixing mechanism;

[0025] The fixing mechanism includes a fixing seat for supporting the strip base material roll, and the fixing seat is provided with a limiting member that abuts against the outer peripheral surface of the strip base material roll;

[0026] There are at least four limiting members, which are arranged in pairs and equidistantly around the central axis of the welding strip base material roll.

[0027] A fixed base is used to support the strip base material roll, and a limiting member is provided on the fixed base to abut against the outer circumference of the strip base material roll. This can fix the strip base material roll and prevent it from shifting due to traction force, while not affecting the output of the strip base material roll. There are at least 4 limiting members, which are arranged in pairs and equidistantly around the central axis of the strip base material roll, making the clamping force on the strip base material roll more stable.

[0028] The above-described embodiments of this application have at least one or more of the following beneficial effects: a limiting mechanism for feeding solder strip substrate is provided, including at least one limiting unit; the limiting unit abuts against the separation point of the solder strip substrate on the inner circumferential surface of the solder strip base material roll to limit the height of the pulled-out solder strip substrate from the separation point on the inner circumferential surface of the solder strip base material roll, thereby preventing the solder strip substrate in the inner ring of the solder strip base material roll from slipping, thus effectively avoiding the feeding jamming problem caused by the collapse of the inner ring of the solder strip base material roll during the feeding process, effectively avoiding the abnormal situation of solder strip substrate wire breakage, thereby improving production efficiency and yield.

[0029] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0030] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the drawings are used to denote similar components, wherein:

[0031] Figure 1 This is a schematic diagram of the limiting mechanism for feeding solder strip substrate provided in one embodiment of this application when applied to feeding solder strip substrate;

[0032] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0033] Figure 3 This is a schematic diagram of the structure of the limiting unit composed of hollow straight tubes in the limiting mechanism for feeding welding strip substrate provided in one embodiment of this application;

[0034] Figure 4 This is a schematic diagram of a welding strip base material roll mounted on a fixed base in a welding strip base material feeding device provided in one embodiment of this application.

[0035] Among them: 1. Limiting unit; 11. Limiting tubular component; 111. Spiral tube; 112. Hollow straight tube; 113. Elastic component; 2. Welding strip base material roll; 3. Fixing seat; 4. Limiting component. Detailed Implementation

[0036] Some embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0037] As described in the background section, current solder strip base material rolls are hollow cylindrical rolls. When feeding the solder strip base material, the material is fed from the inside out starting from the inner circle of the hollow solder strip base material roll. During the feeding process, after the solder strip base material at the lower end of the inner circle is pulled out of the inner circle of the roll, the solder strip base material at the upper end of the inner circle of the roll, due to the loss of support from the bottom solder strip base material, is prone to collapse downwards and press down on the solder strip base material that has been pulled out below, causing feeding jams and abnormal breakage of the solder strip base material, reducing production efficiency, resulting in material waste and a decrease in yield.

[0038] To address the aforementioned issues, this application creatively proposes a limiting mechanism and a welding strip substrate feeding device. The limiting mechanism includes at least one limiting unit. The limiting unit abuts against the separation point of the welding strip substrate on the inner circumferential surface of the welding strip base material roll to limit the height of the separation point between the pulled-out welding strip substrate and the inner circumferential surface of the welding strip base material roll. This prevents the welding strip substrate on the inner ring of the welding strip base material roll from slipping, thereby effectively preventing feeding jamming caused by the collapse of the inner ring of the welding strip base material roll during the feeding process. It also effectively prevents abnormal welding strip substrate wire breakage, thereby improving production efficiency and yield.

[0039] The present application will be described in detail below through specific embodiments.

[0040] Specifically, this application provides a limiting mechanism for feeding solder strip substrate, referring to... Figure 1 and Figure 2 As shown, it includes at least one limiting unit 1;

[0041] The limiting unit 1 abuts against the separation point of the welding strip substrate on the inner circumference surface of the welding strip base material roll 2 to limit the height of the separation point between the pulled-out welding strip substrate and the inner circumference surface of the welding strip base material roll 2, and to prevent the welding strip substrate on the inner ring of the welding strip base material roll 2 from slipping.

[0042] The substrate material for the solder strip can be any one of copper wire substrate, copper strip substrate, aluminum wire substrate, or aluminum strip substrate, and the cross-section of the substrate material can be any one of circular, quadrilateral, or triangular shapes. This application does not impose any specific restrictions on this.

[0043] The limiting mechanism for feeding solder strip substrate provided in this application includes at least one limiting unit 1. Under the action of gravity, the limiting unit 1 always abuts against the separation point between the solder strip substrate and the inner circumferential surface of the solder strip base material roll 2, thereby limiting the height of the pulled-out solder strip substrate at the separation point from the inner circumferential surface of the solder strip base material roll 2, and abutting against the top of the pulled-out solder strip substrate that has not been pulled out, so as to prevent the inner circle of the solder strip base material roll 2 from collapsing above the pulled-out solder strip substrate. This effectively avoids the problem of feeding jamming caused by the collapse of the inner circle of the solder strip base material roll 2 during the feeding process, effectively avoids the abnormal situation of solder strip substrate breakage, thereby improving production efficiency and yield.

[0044] In some embodiments, the limiting unit 1 includes a limiting tubular member 11 that is movably sleeved on the pull-out welding strip of the welding strip base material roll 2.

[0045] The limiting tubular component 11 is movably sleeved on the weld strip substrate pulled out of the weld strip base material roll 2. Under the influence of gravity, it can always remain at the separation point between the pulled weld strip substrate and the inner circumferential surface of the weld strip base material roll 2, so that it can always abut against the separation point of the weld strip substrate on the inner circumferential surface of the weld strip base material roll 2 during the process of pulling the weld strip substrate. When the inner ring of the welding strip base material roll 2 is fed from bottom to top, the welding strip substrate of the inner ring is pulled out and separated from the inner circumferential surface of the welding strip base material roll 2. Under the action of gravity, the limiting tubular component 11 always abuts against the inner circumferential surface of the welding strip base material roll 2, thereby abutting against the separation point of the welding strip substrate pulled out from the inner circumferential surface of the welding strip base material roll 2. The welding strip substrate above the separation point is supported by the limiting tubular component 11 and will not collapse downward and press down on the pulled welding strip substrate. When the inner ring of the welding strip base material roll 2 is fed from top to bottom, since the limiting tubular component 11 is movably sleeved on the welding strip substrate, it slides on the welding strip substrate under the action of gravity, which does not affect the pulling out of the welding strip substrate.

[0046] In some embodiments, the limiting tubular member 11 includes at least one such as Figure 1 and Figure 2 The spiral tube 111 shown is wound around the weld strip base material roll 2 and pulled out onto the weld strip substrate, and as shown in the figure. Figure 3 The at least two hollow straight tubes 112 connected end to end are shown. Specifically, the limiting unit 1 may include one spiral tube 111, or two or more spiral tubes 111, or at least two hollow straight tubes 112 connected end to end, or any combination of spiral tubes 111 and hollow straight tubes 112. This application embodiment does not specifically limit this.

[0047] Reference Figure 1 and Figure 2 As shown, the spiral tube 111 is wound around the weld strip substrate 2 that is being pulled out, which facilitates installation and allows for adjustment of the overall length by pulling. The hollow straight tube 112, which is connected end to end, can better adapt to the curvature of the pulled weld strip substrate when the length of the hollow straight tube 112 is small.

[0048] In some embodiments, refer to Figure 3 As shown, the hollow straight tube 112 is connected end to end by an elastic member 113.

[0049] The hollow straight tube 112 is connected end-to-end by an elastic element 113, providing greater flexibility at the connection and better adapting to the curling degree of the weld strip substrate under different conditions. The elastic element 113 can be a spring, a rubber band, or any other elastic component or structure capable of significant curling; this application does not impose specific limitations in this regard. The elastic element 113 can be connected to the outer circumferential surface of the hollow straight tube 112 or to the end face of the hollow straight tube 112; this application also does not impose specific limitations in this regard. The elastic element 113 can be connected and fixed to the hollow straight tube 112 by adhesive, snap-fit, or any other arbitrary method.

[0050] Preferably, the hollow straight tube 112 is detachably connected via a connector. The detachable connection of the hollow straight tube 112 facilitates connection and disassembly, and allows for adjustment of the overall length of the limiting tubular component 11.

[0051] For example, a connecting hole is provided on the circumference of the hollow straight tube 112, and the connecting member is a spring with a bent end. The hollow straight tube 112 is detachably connected by inserting the bent part of the spring end into the connecting hole and engaging with the connecting hole.

[0052] In some embodiments, the hollow straight tube 112 has an axial length of less than or equal to 1.5 cm.

[0053] When the length of the hollow straight tube 112 in its axial direction is greater than 1.5cm, its adaptability to the curvature of the pulled welding strip substrate is low.

[0054] In some embodiments, the weight of the limiting tubular member 11 is greater than or equal to 0.1 kg.

[0055] The weight of the limiting tubular component 11 is greater than or equal to 0.1 kg, which enables it to stably abut against the separation point of the welding strip substrate on the inner ring of the welding strip base material roll 2 under the action of gravity.

[0056] In some embodiments, the limiting tubular member 11 includes a metal tubular member and an elastic layer covering the outer surface of the metal tubular member.

[0057] The limiting tubular component 11 includes a metal tubular component and an elastic layer covering the outer surface of the metal tubular component. The metal tubular component ensures that the limiting tubular component 11 has sufficient weight to stably abut against the separation point of the solder strip substrate on the inner ring of the solder strip base material roll 2 under the action of gravity, and has high hardness and is not easily deformed. The elastic layer can prevent the metal layer from scratching the surface of the solder strip substrate, thus preventing wear on the surface of the solder strip substrate. For example, the limiting tubular component 11 includes a copper tubular component and a rubber layer covering the surface of the copper tubular component.

[0058] This application embodiment also provides a welding strip substrate feeding device, the device including a traction mechanism (not shown) and a limiting mechanism for feeding welding strip substrate as described in any of the above. The traction mechanism is used to fix the free end of the welding strip substrate of the welding strip base material roll 2 and pull it to the target station.

[0059] The traction mechanism pulls the welding strip substrate outward, and the limiting mechanism restricts the height at the separation point between the pulled welding strip substrate and the inner circumferential surface of the welding strip base material roll 2, preventing the welding strip substrate on the inner ring of the welding strip base material roll 2 from slipping. This ensures smooth discharge of the welding strip substrate, effectively avoids jamming during welding strip substrate discharge, and improves the discharge efficiency of the welding strip substrate.

[0060] In some embodiments, the device further includes a fixing mechanism; see reference Figure 4 As shown, the fixing mechanism includes a fixing seat 3 for supporting the welding strip base material roll 2, and the fixing seat 3 is provided with a limiting member 4 that abuts against the outer peripheral surface of the welding strip base material roll 2;

[0061] There are at least four limiting members 4, which are arranged in pairs and equidistantly around the central axis of the welding strip base material roll 2.

[0062] A fixed base 3 is used to support the strip base material roll 2, and a limiting member 4 is provided on the fixed base 3 to abut against the outer circumference of the strip base material roll 2. This can fix the strip base material roll 2 and prevent it from shifting due to traction force, while not affecting the discharge of the strip base material roll 2. There are at least 4 limiting members, which are arranged in pairs and equidistantly around the central axis of the strip base material roll 2. This makes the clamping force on the strip base material roll 2 more stable and prevents the strip base material roll 2 from shifting or even overturning when its own weight is less than the traction force of the traction mechanism in the later stage of feeding, thus affecting the normal feeding of the strip base material.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A limiting mechanism for feeding solder strip substrate, characterized in that, Includes at least one limiting unit; The limiting unit abuts against the separation point of the solder strip substrate on the inner circumference surface of the solder strip base material roll to limit the height of the separation point between the pulled-out solder strip substrate and the inner circumference surface of the solder strip base material roll, thereby preventing the solder strip substrate on the inner ring of the solder strip base material roll from slipping.

2. The limiting mechanism for feeding solder strip substrate according to claim 1, characterized in that, The limiting unit includes a limiting tubular component that is movably sleeved on the welding strip substrate pulled out of the welding strip base material roll.

3. The limiting mechanism for feeding solder strip substrate according to claim 2, characterized in that, The limiting tubular component includes at least one spiral tube wound helically around the weld strip substrate that is being pulled out of the weld strip base material roll; and / or At least two hollow straight pipes connected end to end.

4. The limiting mechanism for feeding solder strip substrate according to claim 3, characterized in that, The hollow straight tubes are connected end to end by elastic elements.

5. The limiting mechanism for feeding solder strip substrate according to claim 3 or 4, characterized in that, The hollow straight tube is detachably connected via a connector.

6. The limiting mechanism for feeding solder strip substrate according to claim 3 or 4, characterized in that, The hollow straight tube has an axial length of less than or equal to 1.5 cm.

7. The limiting mechanism for feeding solder strip substrate according to any one of claims 2-4, characterized in that, The weight of the limiting tubular component is greater than or equal to 0.1KG.

8. The limiting mechanism for feeding solder strip substrate according to any one of claims 2-4, characterized in that, The limiting tubular component includes a metal tubular component and an elastic layer covering the outer surface of the metal tubular component.

9. A feeding device for welding strip substrate, characterized in that, The device includes a traction mechanism and a limiting mechanism for feeding the welding strip substrate as described in any one of claims 1-7. The traction mechanism is used to fix the free end of the welding strip substrate of the welding strip base material roll and pull it to the target station.

10. The welding strip substrate feeding device according to claim 9, characterized in that, The device also includes a fixing mechanism; The fixing mechanism includes a fixing seat for supporting the strip base material roll, and the fixing seat is provided with a limiting member that abuts against the outer peripheral surface of the strip base material roll; There are at least four limiting members, which are arranged in pairs and equidistantly around the central axis of the welding strip base material roll.

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