CN219274952U - Wire feeding device for producing solar cell strings - Google Patents

Abstract

The utility model discloses a welding wire feeding device for producing solar cell strings, which comprises a first clamping mechanism and a second clamping mechanism, wherein the first clamping mechanism comprises a first clamping end movably arranged along the axial direction of a welding wire; the second clamping mechanism comprises a second clamping end, and the second clamping end and the first clamping end can be respectively arranged in the axial direction of the welding wire and respectively comprise a clamping state and a releasing state; when the first clamping end is in a clamping state, the first clamping end can pass through a yielding gap formed by the second clamping end in a releasing state along the axial direction of the welding wire; when the first clamping end is in a release state, the first clamping end can move to an initial position along the axial direction of the welding wire from the outer side of the second clamping end in the clamping state, the feeding device does not need to be provided with excessive lifting driving parts, the yielding and avoiding of different clamping parts can be realized through the change of the opening and closing state, the equipment cost is low, the production efficiency is high, and the efficient feeding of the welding wire is realized.

Description

Wire feeding device for producing solar cell strings

Technical Field

The utility model relates to the technical field of solar cell welding, in particular to a welding wire supply device for producing solar cell strings.

Background

In the series welding process of the solar cell, a plurality of cell pieces are sequentially arranged, and each two adjacent cell pieces are welded together through a conductive welding strip (or called conductive welding wire, hereinafter, for convenience of description, abbreviated as welding wire), so that a solar cell string is obtained, and the cell string has higher working efficiency compared with a single cell piece. Furthermore, a plurality of groups of battery strings can be connected in parallel or in series along the vertical direction to form a multi-parallel battery string with higher electricity generating efficiency, so that the multi-parallel battery string has wide market application prospect.

In actual operation, the length of the welding wire is comprehensively determined by various parameters such as the size between every two adjacent battery pieces, so that the two battery pieces are preferably welded together with high quality; in general, a preset length of welding wire is obtained by cutting an entire raw welding wire, during which the welding wire is drawn from a buffer position of the raw welding wire and then put into a clamping position to be held, and then cutting is performed, wherein the drawing of the raw welding wire and the clamping and holding of the raw welding wire are respectively and independently completed by a clamping mechanism at present, and the specific procedures are as follows: the first clamping mechanism is used for lifting the raw welding wire to be higher than the first height of the second clamping mechanism after being pulled out (mutual interference of the raw welding wire is avoided), then the raw welding wire is moved towards the direction where the second clamping mechanism is located, and is lowered to the second height where the second clamping mechanism can clamp the raw welding wire after being moved to the front side beyond the second clamping mechanism, after the second clamping mechanism clamps the raw welding wire, the first clamping mechanism is used for loosening the raw welding wire and lifting the raw welding wire to the first height again, then the raw welding wire is moved to the initial position for next operation, and the process can find that the first clamping mechanism needs to repeatedly lift and descend, so that the yielding with the second clamping mechanism is realized, not only additional driving components are needed, but also the operation duration of the whole process is longer, and the production efficiency is unfavorable to be improved.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide an improved welding wire feeding device for producing solar cell strings, which can realize the abdication and the avoidance of different clamping components through switching of opening and closing states without arranging too many driving components, thereby saving the equipment cost and improving the production efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a wire feeding device for producing solar cell strings, comprising at least a first clamping mechanism for pulling out a welding wire, at least a second clamping mechanism for clamping a fixed welding wire, wherein:

the first clamping mechanism comprises a first clamping end which is movably arranged along the axial direction of the welding wire;

the second clamping mechanism comprises a second clamping end, and the second clamping end and the first clamping end can be respectively arranged in the axial direction of the welding wire;

the first clamping end and the second clamping end respectively comprise a clamping state and a releasing state;

when the first clamping end is in a clamping state, the first clamping end can penetrate through a yielding gap formed by the second clamping end in a releasing state along the axial direction of the welding wire;

when the first clamping end is in the released state, it can move from the outer side of the second clamping end in the clamped state to an initial position along the axial direction of the welding wire.

According to the utility model, when the first clamping end and the second clamping end meet, the first clamping end and the second clamping end can be in different opening and closing states, so that avoidance and abdication are realized, mutual interference between the first clamping end and the second clamping end is avoided, and additional lifting work is not required to be added. According to some preferred and specific aspects of the present utility model, when the first clamping end and the second clamping end are in the same plane, one of the first clamping end and the second clamping end is in a clamping state, and the other is in a releasing state.

Further, according to some preferred and specific aspects of the present utility model, the first gripping end further comprises a first state of motion and a second state of motion, the first gripping end being proximal to the second gripping end when the first gripping end is in the first state of motion, the first gripping end being distal to the second gripping end when the first gripping end is in the second state of motion;

when the first clamping end is in a first motion state, in a second motion state or switched between the first motion state and the second motion state, the clamping center of the first clamping end and the clamping center of the second clamping end are always located on the same horizontal plane.

Further, when the first clamping end is in the first motion state, in the second motion state or switched between the first motion state and the second motion state, the clamping center of the first clamping end and the clamping center of the second clamping end are always located in the axial direction of the welding wire.

In some embodiments of the utility model, the first clamping end is translatably disposed relative to the second clamping end.

In some embodiments of the present utility model, the first clamping mechanism and the second clamping mechanism are disposed in an up-down direction, or the first clamping mechanism and the second clamping mechanism are disposed in a left-right direction.

According to some preferred and specific aspects of the present utility model, when the first clamping end and the second clamping end are respectively in one of the clamping state and the releasing state and are different from each other, an orthographic projection of the first clamping end along an axial direction of the welding wire and an orthographic projection of the second clamping end along the axial direction of the welding wire are not overlapped.

Further, the first clamping end comprises a first wire drawing clamping piece and a second wire drawing clamping piece, and the second clamping end comprises a first fixed clamping piece and a second fixed clamping piece;

the size of the whole welding wire in the radial direction after the first wire drawing clamping piece and the second wire drawing clamping piece are mutually closed and clamped is smaller than the size of the whole welding wire in the radial direction after the first fixed clamping piece and the second fixed clamping piece are mutually opened and released;

the size of the whole welding wire in the radial direction after the first wire drawing clamping piece and the second wire drawing clamping piece are mutually opened and released is larger than the size of the whole welding wire in the radial direction after the first fixed clamping piece and the second fixed clamping piece are mutually closed and clamped.

According to some preferred aspects of the present utility model, the first wire drawing clamp, the second wire drawing clamp, the first fixed clamp, and the second fixed clamp are respectively rotatably provided. In other embodiments, the clamping and releasing may be performed by a translational motion, a rotational motion, or the like.

According to some preferred and specific aspects of the present utility model, the first clamping mechanism further includes a first shaft, a first elastic member, a first driving assembly, and a first wire clamping rotator and a second wire clamping rotator rotatably disposed on the first shaft, respectively, the first wire clamping rotator being disposed at one end of the first wire clamping rotator, the second wire clamping rotator being disposed at one end of the second wire clamping rotator, the first elastic member being disposed between the first wire clamping rotator and the second wire clamping rotator for biasing the first clamping end toward a released state, the first driving assembly being in driving connection with the other end of the first wire clamping rotator, the other end of the second wire clamping rotator, respectively, for converting the first clamping end into a clamped state;

the second clamping mechanism further comprises a second shaft, a second elastic piece, a second driving component and a first fixed clamping rotating piece and a second fixed clamping rotating piece which are respectively and rotationally arranged on the second shaft, wherein the first fixed clamping piece is arranged at one end part of the first fixed clamping rotating piece, the second fixed clamping piece is arranged at one end part of the second fixed clamping rotating piece, the second elastic piece is arranged between the first fixed clamping rotating piece and the second fixed clamping rotating piece and is used for enabling the second clamping end to trend to be in a clamping state, and the second driving component is respectively and rotationally connected with the other end part of the first fixed clamping rotating piece and the other end part of the second fixed clamping rotating piece and is used for enabling the second clamping end to be converted into a releasing state.

According to some preferred and specific aspects of the present utility model, the number of the first clamping ends is m, and the m first clamping ends constitute a first clamping assembly;

the second clamping ends are provided with a plurality of m second clamping ends which are arranged side by side to form a second clamping assembly, and the second clamping assembly is provided with n groups which are arranged side by side;

m and n are integers greater than or equal to 2 respectively, and each group of first clamping components corresponds to n groups of second clamping components.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model innovatively sets the first clamping end and the second clamping end, and can avoid the first clamping end and the second clamping end when the first clamping end and the second clamping end are in different opening and closing states (corresponding to the clamping state and the releasing state), so that the first clamping end can pass through or bypass the second clamping end through the change of structure and/or size after clamping the welding wire and releasing the welding wire, thereby realizing the position change along the axial direction of the welding wire on the basis of no need of setting more lifting equipment, greatly saving the equipment cost, obviously improving the production efficiency after omitting the lifting work and realizing the high-efficiency feeding of the welding wire.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic diagram of a wire feeding device for producing solar cell strings according to an embodiment of the present utility model;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is an enlarged schematic view of FIG. 2 at A';

FIG. 4 is a schematic structural diagram of the first clamping mechanism and the second clamping mechanism in cooperation with each other according to an embodiment of the present utility model;

FIG. 5 is an enlarged schematic view at B in FIG. 4;

FIG. 6 is an enlarged schematic view of FIG. 4 at C;

FIG. 7 is a schematic view of a part of a first clamping mechanism according to an embodiment of the present utility model;

FIG. 8 is an enlarged schematic view of FIG. 7 at D;

FIG. 9 is a schematic diagram of a portion of a second clamping mechanism according to an embodiment of the present utility model;

FIG. 10 is an enlarged schematic view at E in FIG. 9;

in the reference numerals, 100, welding wires; 200. a first clamping mechanism; 210. a first clamping end; 211. avoiding gaps; 212. a first wire drawing clamp; 213. a second wire drawing clamp; 220. a first shaft; 230. a first elastic member; 240. a first drive assembly; 250. the first wire drawing clamping rotating piece; 260. a second wire drawing clamping rotating member; 300. a second clamping mechanism; 310. a second clamping end; 311. a first fixed clamp; 312. a second fixed clamp; 313. a relief void; 320. a second shaft; 330. a second elastic member; 340. a second drive assembly; 350. a first fixed clamping rotating member; 360. a second fixed clamping rotating member; x, the axial direction of the welding wire; y, radial direction of welding wire.

Detailed Description

The present utility model will be described in detail with reference to the drawings and the detailed description, so that the above objects, features and advantages of the present utility model can be more clearly understood. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

The preferred embodiments of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 10, the present example provides a wire feeding apparatus for producing a solar cell string, which includes at least a first clamping mechanism 200 for pulling out a welding wire 100, and at least a second clamping mechanism 300 for clamping and fixing the welding wire 100, wherein:

the first clamping mechanism 200 includes a first clamping end 210, the first clamping end 210 being movably disposed along an axial direction of the welding wire (see X-direction of fig. 2);

the second clamping mechanism 300 includes a second clamping end 310, and the second clamping end 310 and the first clamping end 210 can be respectively arranged in the axial direction of the welding wire;

the first clamping end 210 and the second clamping end 310 respectively comprise a clamping state and a releasing state;

when the first clamping end 210 is in the clamping state, it can pass through the relief gap 313 formed by the second clamping end 310 in the releasing state along the axial direction of the welding wire;

when the first clamping end 210 is in the released state, it can move in the axial direction of the welding wire from the outside of the second clamping end 310 in the clamped state to the initial position.

Specifically, in this example, the specific operation may be performed as follows: the welding wire 100 is pulled out from the welding wire supply by adopting the first clamping end 210, then moves to the second clamping end 310 along the axial direction of the welding wire and passes through the yielding gap 313 formed by the second clamping end 310 in the release state, so that avoiding is realized, and the welding wire and the yielding gap are not mutually interfered;

when the first clamping end 210 reaches the designated position, the second clamping end 310 is clamped and then clamped to fix the welding wire 100, the first clamping end 210 is released and then the welding wire 100 is loosened, the first clamping end 210 is in a released state to form an avoidance gap 211, the avoidance gap 211 allows the first clamping end 210 to move from the outer side of the second clamping end 310 in a clamped state to an initial position along the axial direction of the welding wire, and avoidance is realized as well, and the avoidance gap 211 and the avoidance gap are not mutually interfered.

Further, as an alternative embodiment, after the first clamping end 210 reaches the designated position, the second clamping end 310 is clamped to clamp and fix the welding wire 100, then the welding wire is cut to obtain a welding wire with a preset length, and then the first clamping end 210 is released to loosen the welding wire; or after the first clamping end 210 reaches the designated position, the second clamping end 310 is clamped to clamp and fix the welding wire 100, the first clamping end 210 is released to release the welding wire, and then the welding wire is cut to obtain the welding wire with the preset length.

As shown in fig. 1 to 6, the first clamping mechanism 200 and the second clamping mechanism 300 are disposed along the up-down direction (in other embodiments, the first clamping mechanism and the second clamping mechanism may also be disposed along the left-right direction), specifically, in this example, the disposition along the up-down direction means that most of the structure of the first clamping mechanism 200 is located above the second clamping mechanism 300 (except for some support bases and the like), substantially only the first clamping end 210 and the second clamping end 310 have a cross, specifically, the bottom-most height of the first clamping end 210 is lower than the top-most height of the second clamping end 310, and this arrangement manner can ensure better clamping and fixing of the welding wire 100, but is just based on the fact that when the first clamping end 210 pulls out the welding wire 100, it is required to clamp and make translational movement along the axial direction of the welding wire, the two will generate mutual obstruction, and in the prior art, substantially, only the lifting mechanism is adopted to avoid the mutual obstruction, and the innovative example uses the first clamping end 210 and the second clamping end 310 can make use of the opposite axial direction of the opposite direction, and the opposite direction can be completely moved along the axial direction, when the two opposite directions of the clamping ends are opposite, and the opposite direction can be completely moved by the opposite to the opposite direction; in this example, when the first clamping end 210 and the second clamping end 310 are in the same plane, one of the first clamping end 210 and the second clamping end 310 is in a clamping state, and the other is in a releasing state, so that the first clamping end 210 and the second clamping end are mutually avoided and abducted through obvious change of an opening and closing state.

Further, in this example, the first clamping end 210 further includes a first moving state and a second moving state, when the first clamping end 210 is in the first moving state, the first clamping end 210 is close to the second clamping end 310, and when the first clamping end 210 is in the second moving state, the first clamping end 210 is far away from the second clamping end 310; when the first clamping end 210 is in the first motion state, in the second motion state, or switched between the first motion state and the second motion state, the clamping center of the first clamping end 210 and the clamping center of the second clamping end 310 are always located on the same horizontal plane. Further, in this example, as shown in fig. 2 to 6, when the first clamping end 210 is in the first moving state, in the second moving state or in the switching between the first moving state and the second moving state, the clamping center of the first clamping end 210 and the clamping center of the second clamping end 310 are always located in the axial direction of the welding wire, so as to ensure better connection of the welding wire, and facilitate the later use of the welding wire.

Referring to fig. 2 to 3, the rightmost row exemplarily shows the open and close states of the first clamping end 210 and the part of the second clamping end 310 when they are in the release state and the clamping state, respectively, for example, the first clamping end 210 is at the same position, the inner side is a schematic view when it is in the clamping state, and the outer side is a schematic view when it is in the release state when it is shown by the dotted line; for example, the second clamping end 310, is shown in the clamped state on the inside and in the released state on the outside, as shown by the broken line. With reference to fig. 2-3, fig. 4 illustrates the state of the first clamping end and the second clamping end when they overlap each other, respectively, on the left side and the right side, as shown in fig. 5, the first clamping end in the clamped state carries the welding wire 100 with it and can pass through the yielding gap 313 of the second clamping end in the released state, as shown in fig. 6, the first clamping end in the released state can move around the outer side of the second clamping end in the clamped state, and as known from the above, the first clamping end moves towards the second clamping end to clamp and fix the welding wire 100 to the second clamping end, or moves away from the second clamping end after the handover is completed, and when the first clamping end meets the second clamping end, the first clamping end and the second clamping end can both achieve yielding and yielding through the change of structure and dimension.

Specifically, in this example, the avoidance and yielding when the first clamping end 210 meets the second clamping end 310 are achieved by the following arrangement: when the first and second clamping ends 210, 310 are in one and the other of the clamped and released states, respectively, the orthographic projection of the first clamping end 210 along the axial direction of the welding wire does not overlap with the orthographic projection of the second clamping end 310 along the axial direction of the welding wire. More specifically, the first clamping end 210 has a smaller dimension in the radial direction of the welding wire (see the Y-direction in fig. 2) when in the clamped state than the second clamping end 310 has in the released state; the first clamping end 210 has a dimension in the radial direction of the welding wire that is greater than the dimension in the radial direction of the welding wire when the second clamping end 310 is in the clamped state. Still further, in this example, as shown in fig. 1 to 10, the first clamping end 210 includes a first wire drawing clamping member 212 and a second wire drawing clamping member 213, and the second clamping end 310 includes a first fixed clamping member 311 and a second fixed clamping member 312; the dimension of the whole in the radial direction of the welding wire after the first wire drawing clamping piece 212 and the second wire drawing clamping piece 213 are mutually closed and clamped is smaller than the dimension of the whole in the radial direction of the welding wire after the first fixed clamping piece 311 and the second fixed clamping piece 312 are mutually opened and released; the dimension of the first wire drawing clamp 212 and the second wire drawing clamp 213 in the radial direction of the welding wire after being opened and released from each other is larger than the dimension of the first fixed clamp 311 and the second fixed clamp 312 in the radial direction of the welding wire after being closed and clamped with each other.

As an alternative embodiment, the first drawing clamp 212, the second drawing clamp 213, the first fixed clamp 311, and the second fixed clamp 312 are respectively rotatably provided. In other embodiments, the clamping and releasing may be performed by a translational motion, a rotational motion, or the like.

Specifically, in this example, the first clamping mechanism 200 further includes a first shaft 220, a first elastic member 230, a first driving component 240, and a first wire clamping rotating member 250 and a second wire clamping rotating member 260 rotatably disposed on the first shaft 220, wherein rotation planes of the first wire clamping rotating member 250 and the second wire clamping rotating member 260 when rotating each coincide with each other, the first wire clamping member 212 is disposed at one end of the first wire clamping rotating member 250, the second wire clamping member 213 is disposed at one end of the second wire clamping rotating member 260, the first elastic member 230 is disposed between the first wire clamping rotating member 250 and the second wire clamping rotating member 260 and is used for making the first clamping end 210 trend to a release state, and the first driving component 240 is in driving connection with the other end of the first wire clamping rotating member 250 and the other end of the second wire clamping rotating member 260 and is used for making the first clamping end 210 change to a clamping state;

the second clamping mechanism 300 further includes a second shaft 320, a second elastic member 330, a second driving assembly 340, and a first fixed clamping rotating member 350 and a second fixed clamping rotating member 360 rotatably disposed on the second shaft 320, wherein rotation planes of the first fixed clamping rotating member 350 and the second fixed clamping rotating member 360 are mutually overlapped when the first fixed clamping rotating member and the second fixed clamping rotating member 360 rotate, the first fixed clamping member 311 is disposed at one end of the first fixed clamping rotating member 350, the second fixed clamping member 312 is disposed at one end of the second fixed clamping rotating member 360, the second elastic member 330 is disposed between the first fixed clamping rotating member 350 and the second fixed clamping rotating member 360 and is used for making the second clamping end 310 trend to a clamping state, and the second driving assembly 340 is in driving connection with the other end of the first fixed clamping rotating member 350 and the other end of the second fixed clamping rotating member 360 respectively and is used for making the second clamping end 310 change into a releasing state.

In this example, since the first clamping mechanism 200 needs to be used for pulling out the welding wire 100 from the welding wire buffer, and a relatively large clamping force is needed, it is preferable to adopt the first driving assembly 240 to be in driving connection with the other end portion of the first wire drawing clamping rotating member 250 and the other end portion of the second wire drawing clamping rotating member 260 respectively, and to be used for converting the first clamping end 210 into a clamping state, when releasing, the external force applied by the first driving assembly 240 is removed, and then the corresponding components are driven to be opened by other forces, for example, the first clamping mechanism can be directly realized by adopting an elastic component; the second clamping mechanism 300 mainly clamps and fixes the welding wire 100, and compared with the first clamping mechanism 200, the required clamping force is relatively small, and the second clamping end 310 can be made to trend to a clamping state by adopting an elastic component, and when the welding wire needs to be released and opened, the second clamping end 310 can be driven to be released and opened by adopting a driving component to overcome the elastic force.

In this example, the number of the first clamping ends 210 is m, and the m first clamping ends 210 form a first clamping assembly; the second clamping ends 310 are provided with a plurality of m second clamping ends 310 which are arranged side by side to form a second clamping assembly, and the second clamping assembly is provided with n groups which are arranged side by side; m and n are integers greater than or equal to 2, such as an integer of 2-1000, or an integer of 10-500, respectively, and each group of first clamping assemblies corresponds to n groups of second clamping assemblies.

Alternatively, in some embodiments, the first clamping assemblies may also have more groups, for example, t groups are disposed side by side, where t is an integer greater than or equal to 2, so that more second clamping assemblies can be correspondingly used to realize single feeding of more welding wires.

Referring again to fig. 7 and 8, the right side in fig. 7 and 8 exemplarily shows a change schematic diagram of the first clamping end 210 in the clamping state and the releasing state, respectively, the outer side adopts a structural state exemplarily shown by a dotted line to indicate that the first clamping end 210 is in the releasing state, the first wire drawing clamping member 212 and the second wire drawing clamping member 213 are far away from each other, and the inner side adopts a structural state exemplarily shown by a solid line to indicate that the first clamping end 210 is in the clamping state; further, the first driving assembly 240 is provided with a first driving block (not shown), and the first driving block can be respectively matched with the first wire drawing clamping rotating member 250 and the second wire drawing clamping rotating member 260 through an inclined plane, and the first wire drawing clamping rotating member 250 and the second wire drawing clamping rotating member 260 are driven to rotate through inclined plane transmission, so that the clamping of the first clamping end 210 is realized; in this example, referring to fig. 2 to fig. 6 again, the first elastic member 230 is disposed below the first shaft 220 and near the first clamping end 210, so as to facilitate the release of the first clamping end 210, where the first shaft 220, the first elastic member 230, the first wire drawing clamping rotating member 250, the second wire drawing clamping rotating member 260, the first wire drawing clamping member 212, and the second wire drawing clamping member 213 form a first clamping unit, and when the number of the first clamping ends 210 is m, the first clamping units also have m, but a driving component, such as a cylinder, may be disposed to drive the first driving blocks to cooperate with the m first clamping units one by one, so as to realize synchronous driving and movement.

Referring to fig. 9 and 10 again, in this example, the second shaft 320, the second elastic member 330, the first fixed clamping rotating member 350, the second fixed clamping rotating member 360, the first fixed clamping member 311 and the second fixed clamping member 312 form a second clamping unit, when the second clamping ends 310 are multiple, the second clamping units also have corresponding numbers, the second driving assembly 340 is provided with second driving blocks (not shown), the second driving blocks can be respectively matched with the first fixed clamping rotating member 350 and the second fixed clamping rotating member 360 through an inclined plane, the first fixed clamping rotating member 350 and the second fixed clamping rotating member 360 are driven to rotate through the transmission of the inclined plane, so that the release of the second clamping ends 310 is realized, the second elastic member 330 is arranged below the first fixed clamping rotating member and the second fixed clamping rotating member, and is relatively far away from the second clamping ends 310, and is respectively positioned on the upper side and the lower side of the second shaft 320, when the second clamping ends 310 are released, the second elastic member 330 is in a state of being compressed, and the second clamping assembly is further stretched when the second clamping ends 310 are driven to rotate, and the second elastic member 330 is in a state of being stretched, and the second clamping assembly is further stretched, and the second clamping assembly is driven to rotate, and the second clamping assembly is in a state of being clamped by the second elastic member is released.

In other embodiments, other power components may be used to drive the first and second clamping ends to effect clamping or release.

As can be seen from the foregoing, in this example, by designing and improving the first clamping end 210 and the second clamping end 310, the two are respectively in the clamping state and the releasing state, and the structure and the overall size are changed, so that the two are not interfered with each other in the process of handing over the welding wire, avoiding yielding and abdicating when moving along the axial direction of the welding wire are not needed by other lifting devices, the setting of the welding wire is not affected, the equipment cost is saved, the production efficiency is greatly improved, and compared with the prior art, the improvement is remarkable.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.

Claims (11)

1. A wire feeding device for producing solar cell strings, comprising at least a first clamping mechanism for pulling out a welding wire, and at least a second clamping mechanism for clamping and fixing the welding wire, characterized in that:

the first clamping mechanism comprises a first clamping end which is movably arranged along the axial direction of the welding wire;

the second clamping mechanism comprises a second clamping end, and the second clamping end and the first clamping end can be respectively arranged in the axial direction of the welding wire;

the first clamping end and the second clamping end respectively comprise a clamping state and a releasing state;

when the first clamping end is in a clamping state, the first clamping end can penetrate through a yielding gap formed by the second clamping end in a releasing state along the axial direction of the welding wire;

when the first clamping end is in the released state, it can move from the outer side of the second clamping end in the clamped state to an initial position along the axial direction of the welding wire.

2. The wire feeding device for producing solar cell strings according to claim 1, wherein: when the first clamping end and the second clamping end are in the same plane, one of the first clamping end and the second clamping end is in a clamping state, and the other is in a releasing state.

3. The wire feeding device for producing solar cell strings according to claim 1, wherein: the first clamping end further comprises a first motion state and a second motion state, when the first clamping end is in the first motion state, the first clamping end is close to the second clamping end, and when the first clamping end is in the second motion state, the first clamping end is far away from the second clamping end;

when the first clamping end is in a first motion state, in a second motion state or switched between the first motion state and the second motion state, the clamping center of the first clamping end and the clamping center of the second clamping end are always located on the same horizontal plane.

4. A wire feeding apparatus for producing a solar cell string according to claim 3, wherein: when the first clamping end is in a first motion state, in a second motion state or switched between the first motion state and the second motion state, the clamping center of the first clamping end and the clamping center of the second clamping end are always located in the axial direction of the welding wire.

5. The wire feeding device for producing a solar cell string according to claim 1 or 2 or 3 or 4, wherein: the first clamping end is translatably disposed relative to the second clamping end.

6. The wire feeding device for producing solar cell strings according to claim 1, wherein: the first clamping mechanism and the second clamping mechanism are arranged along the up-down direction, or the first clamping mechanism and the second clamping mechanism are arranged along the left-right direction.

7. The wire feeding device for producing solar cell strings according to claim 1, wherein: when the first clamping end and the second clamping end are respectively in one of a clamping state and a releasing state and are different from each other, the orthographic projection of the first clamping end along the axial direction of the welding wire is not overlapped with the orthographic projection of the second clamping end along the axial direction of the welding wire.

8. The wire feeding device for producing a solar cell string according to claim 1 or 7, wherein: the first clamping end comprises a first wire drawing clamping piece and a second wire drawing clamping piece, and the second clamping end comprises a first fixed clamping piece and a second fixed clamping piece;

the size of the whole welding wire in the radial direction after the first wire drawing clamping piece and the second wire drawing clamping piece are mutually closed and clamped is smaller than the size of the whole welding wire in the radial direction after the first fixed clamping piece and the second fixed clamping piece are mutually opened and released;

the size of the whole welding wire in the radial direction after the first wire drawing clamping piece and the second wire drawing clamping piece are mutually opened and released is larger than the size of the whole welding wire in the radial direction after the first fixed clamping piece and the second fixed clamping piece are mutually closed and clamped.

9. The wire feeding device for producing a solar cell string according to claim 8, wherein: the first wire drawing clamping piece, the second wire drawing clamping piece, the first fixed clamping piece and the second fixed clamping piece are respectively arranged in a rotating mode.

10. The wire feeding device for producing a solar cell string according to claim 9, wherein: the first clamping mechanism further comprises a first shaft, a first elastic piece, a first driving component, a first wire drawing clamping rotating piece and a second wire drawing clamping rotating piece which are respectively and rotatably arranged on the first shaft, wherein the first wire drawing clamping piece is arranged at one end part of the first wire drawing clamping rotating piece, the second wire drawing clamping piece is arranged at one end part of the second wire drawing clamping rotating piece, the first elastic piece is arranged between the first wire drawing clamping rotating piece and the second wire drawing clamping rotating piece and is used for enabling the first clamping end to tend to be in a release state, and the first driving component is respectively in transmission connection with the other end part of the first wire drawing clamping rotating piece and the other end part of the second wire drawing clamping rotating piece and is used for enabling the first clamping end to be converted into a clamping state;

the second clamping mechanism further comprises a second shaft, a second elastic piece, a second driving component and a first fixed clamping rotating piece and a second fixed clamping rotating piece which are respectively and rotationally arranged on the second shaft, wherein the first fixed clamping piece is arranged at one end part of the first fixed clamping rotating piece, the second fixed clamping piece is arranged at one end part of the second fixed clamping rotating piece, the second elastic piece is arranged between the first fixed clamping rotating piece and the second fixed clamping rotating piece and is used for enabling the second clamping end to trend to be in a clamping state, and the second driving component is respectively and rotationally connected with the other end part of the first fixed clamping rotating piece and the other end part of the second fixed clamping rotating piece and is used for enabling the second clamping end to be converted into a releasing state.

11. The wire feeding device for producing solar cell strings according to claim 1, wherein: the number of the first clamping ends is m, and the m first clamping ends form a first clamping assembly;

the second clamping ends are provided with a plurality of m second clamping ends which are arranged side by side to form a second clamping assembly, and the second clamping assembly is provided with n groups which are arranged side by side;

m and n are integers greater than or equal to 2 respectively, and each group of first clamping components corresponds to n groups of second clamping components.

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