CN215787319U

CN215787319U - Pressing pin, pressing pin assembly, welding strip pressing device and series welding machine

Info

Publication number: CN215787319U
Application number: CN202121222288.9U
Authority: CN
Inventors: 廖伟; 李顺; 石亮杰
Original assignee: Chuzhou Longi Solar Technology Co Ltd
Current assignee: Chuzhou Longi Solar Technology Co Ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2022-02-11
Anticipated expiration: 2031-06-02

Abstract

The utility model discloses a pressing pin, a pressing pin assembly, a solder strip pressing device and a series welding machine, relates to the technical field of photovoltaic assembly processing, and aims to reduce the risk that a pressing pin falls off from a bearing strip to damage a battery piece under the condition that external supporting force is not needed so as to improve the yield of the battery piece in the processing process. The pressing needle comprises a pressing block and a pressing needle head, the pressing block is provided with a bearing part and a first connecting part, and the pressing needle head is provided with a pressing holding part and a second connecting part. The second connecting portion extends along the first direction, one end of the second connecting portion is connected with the pressing portion, and the other end of the second connecting portion is connected with the bearing portion. The first connecting portion extends along the second direction, one end of the first connecting portion is connected with the bearing portion, and the other end of the first connecting portion extends towards the direction far away from the bearing portion. The first direction and the second direction have an angle alpha between them, 0 deg. < alpha <180 deg..

Description

Pressing pin, pressing pin assembly, welding strip pressing device and series welding machine

Technical Field

The utility model relates to the technical field of photovoltaic module processing, in particular to a pressing pin, a pressing pin module, a welding strip pressing device and a stringer.

Background

In the processing process of the photovoltaic module, a series welding machine is needed to weld the main grid lines and the welding strips on the battery pieces included in the photovoltaic module together so as to enable the battery pieces to be in series. In the welding process, the welding strip needs to be pressed on the main grid line by using a welding strip pressing device included in the stringer, so that the welding effect of the welding strip and the main grid line is ensured.

The related art provides a solder strip pressing device which generally comprises a bearing disc and a pressing pin assembly, wherein the pressing pin assembly generally comprises a bearing strip, a pressing pin and a fastener for fastening the pressing pin on the bearing strip. The bearing strip is detachably arranged on the bearing disc, and the press pin is detachably arranged on the bearing strip. And applying pressing force on the welding strip corresponding to the main grid line by using a pressing pin so as to assist in realizing welding of the welding strip and the main grid line.

The tucking that prior art provided generally is sharp tucking, and sharp tucking needs operator or clamping device etc. to provide holding power for sharp tucking in the dismouting in-process, otherwise can't realize the dismouting of sharp tucking. In the process of disassembly and assembly, when the supporting force is insufficient or the operation is wrong, the problem that the linear pressing pin falls off from the bearing strip is easily caused. Under the condition that the battery piece is arranged below the linear pressing pin, the fallen linear pressing pin can damage the battery piece. At this time, the yield of the battery plate in the processing process will be greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pressing pin, a pressing pin assembly, a welding strip pressing device and a series welding machine, which can reduce the risk that a battery piece is damaged because the pressing pin falls off from a bearing strip under the condition of not needing external supporting force so as to improve the yield of the battery piece in the processing process.

In a first aspect, the present invention provides a pressing needle, which includes a pressing block and a pressing needle head, wherein the pressing block has a bearing portion and a first connecting portion, the pressing needle head has a pressing portion and a second connecting portion, the second connecting portion extends along a first direction, one end of the second connecting portion is connected to the pressing portion, and the other end of the second connecting portion is connected to the bearing portion. The first connecting portion extends along the second direction, one end of the first connecting portion is connected with the bearing portion, and the other end of the first connecting portion extends towards the direction far away from the bearing portion. The first direction and the second direction have an angle alpha between them, 0 deg. < alpha <180 deg..

Compared with the prior art, the press needle provided by the utility model has the advantages that the first connecting part and the second connecting part are both connected to the bearing part, and an included angle alpha is formed between the extending direction (the first direction) of the second connecting part and the extending direction (the second direction) of the first connecting part. At the moment, the pressing block and the pressing needle head can form a fold line-shaped pressing needle.

When the pressing pin provided by the utility model is applied to auxiliary welding strip welding, the first connecting part of the pressing pin can be inserted into the mounting groove formed in the carrying strip. At the moment, the fold-line-shaped pressing pin can be integrally clamped on the carrying strip. That is, the presser pin will not fall off from the carrier strip without fastening the presser pin to the carrier strip by the fastener. Based on this, the pressing pin can not cause the damage to the battery piece that is located its below because of droing in the dismouting in-process for the yield of battery piece improves greatly.

As an implementation manner, the bearing portion is a bearing block, and the first connecting portion is a first connecting shaft. The second connecting part is a second connecting shaft, and the pressing part is a pressing block. An included angle between a central axis of the first connecting shaft and a central axis of the second connecting shaft is an included angle alpha between the first direction and the second direction, and alpha is 90 degrees. The central axis of the pressure holding block is collinear with the central axis of the second connecting shaft.

Under the condition of adopting the technical scheme, the bearing block and the first connecting shaft connected to one end of the bearing block form a linear or approximately linear pressing block as a whole. Under the condition that the central axis of the pressing and holding block is collinear with the central axis of the second connecting shaft, the pressing and holding block and the second connecting shaft form a straight-line-shaped or approximately straight-line-shaped pressing needle head. When alpha is 90 deg., the pressing block and pressing needle head are formed into L-shaped or approximately L-shaped pressing needle.

In practical application, the pressing needle head can be vertically pressed down onto the welding strip on the whole, and the welding effect between the welding strip and the main grid line on the battery piece is ensured under the condition that stable pressing force is provided for the welding strip. In addition, under the condition that the whole pressing needle head is vertically pressed to the welding strip, a component force vertical to the pressing force cannot be generated on the second connecting shaft of the pressing needle head. At this time, the second connecting shaft does not apply a tensile force or a compressive force to the bearing block, so as to ensure the connection stability between the second connecting shaft and the bearing block.

As one implementation, the first connecting portion is a first connecting shaft. The second connecting part is a second connecting shaft, and the pressing part is a pressing block. An included angle between a central axis of the first connecting shaft and a central axis of the second connecting shaft is an included angle alpha between the first direction and the second direction, alpha is not equal to 90 degrees, the pressing block is provided with a pressing surface, an included angle beta is formed between the pressing surface and the second connecting shaft, the pressing surface is parallel to the first connecting shaft, and beta is equal to alpha or 180 degrees-alpha.

Under the condition of adopting above-mentioned technical scheme, guaranteeing to press the face and perpendicularly push down to the circumstances on the welding area, be "loudspeaker form" structure between second connecting axle and the first connecting axle.

When contained angle alpha between second connecting axle and the first connecting axle is the acute angle, the accommodation space that forms between second connecting axle and the first connecting axle is less, when first connecting axle is inserted and is established in the mounting groove that the bearing strip has, the second connecting axle can the centre gripping on the outer wall that the bearing strip has. At this moment, under the condition that the first connecting shaft and the bearing strip are not tightly connected through the fastener, the better connection stability between the pressing pin and the bearing strip can be ensured.

When the included angle alpha between the second connecting shaft and the first connecting shaft is an obtuse angle, the accommodating space formed between the second connecting shaft and the first connecting shaft is relatively large, and when the first connecting shaft is inserted into the mounting groove formed in the bearing strip, a relatively abundant space is formed between the second connecting shaft and the bearing strip, so that the bearing strip can be suitable for the bearing strip needing relatively large mounting space.

As an implementation manner, the pressing pin further comprises an elastic member, and the elastic member is sleeved at a position where the second connecting shaft is located between the upper surface of the pressing and holding block and the lower surface of the bearing block.

When the technical scheme is adopted, when the pressing force pressed on the welding strip is transmitted to the welding strip by the pressing block and the pressing needle head in sequence, the elastic part can absorb a part of the pressing force. That is to say, utilize the elastic component can cushion and apply the pressure from pressing the needle to the power of holding on the solder strip, under the condition that effectively reduces the power of holding and pressing and to the solder strip destruction, can improve solder strip and main grid line's welding quality and efficiency for photovoltaic module's yield improves greatly.

As an implementation mode, the bearing block is provided with a mounting blind hole, and the second connecting shaft is inserted in the mounting blind hole. The second connecting shaft is inserted in the mounting blind hole, so that the fastening connection of the needle pressing head and the pressing block is realized, and other members for fastening the second connecting shaft and the bearing block are not required to be additionally arranged. Based on this, not only is the disassembly/assembly of the needle pressing head and the pressing block convenient, but also the structure of the needle pressing can be simplified as a whole.

As an implementation mode, the bearing block is provided with a mounting through hole, and the second connecting shaft penetrates through the mounting through hole and then is fixedly connected with the first fastener. The second connecting shaft penetrating through the mounting through hole is fastened and connected with the bearing block by the first fastener, and under the condition of improving the connection stability of the pressing needle head and the pressing block, the stability and consistency of the pressing force exerted on the welding strip by the pressing needle can be improved, so that the pressing effect of the pressing needle on the welding strip and the welding effect of the welding strip and the main grid line are ensured.

As one implementation, the tucking is an integral tucking. The integral type tucking in practical application, can effectual reduction tucking head for the risk that the briquetting rocked, under the condition that improves tucking stability, can confirm the pressure of pressurize to welding the area and hold the effect and weld the welding effect of area and main grid line.

In a second aspect, the present invention also provides a presser pin assembly comprising a carrier strip, a plurality of presser pins and a plurality of second fasteners. The bearing strip is provided with at least one first mounting groove. The first connecting parts of each pressing needle are inserted into the first mounting grooves at intervals, and the position of the first connecting part of each pressing needle in the first mounting groove is adjustable, so that the distance between every two adjacent first connecting parts is changed. And under the condition that the first connecting part reaches the preset position, the second fastening piece is fixedly connected with the first connecting part.

When the needle pressing assembly provided by the utility model is actually applied, a plurality of pressing needles can be distributed on the carrying strip at intervals. Specifically, the first connecting portion of each pressing pin can be inserted into the mounting groove at intervals, and the pressing pin and the carrier strip are fastened together by using the second fastening piece detachably connected with the first connecting portion under the condition that the position of each first connecting portion is determined.

When the number of the main grid lines of the battery piece to be welded or the distance between the main grid lines is changed, the positions of the welding strips corresponding to the main grid lines are also changed. At this time, the position of the pressing pin on the carrier strip needs to be adjusted so that the pressing portion of the pressing pin corresponds to the solder strip. When the position of the pressing needle is adjusted, the connection relation between the second fastening piece and the first connection part can be adjusted to be loose fit from tight fit, or the second fastening piece can be completely detached from the first connection part. On the basis, the first connecting parts can be moved in the length direction of the first mounting groove, so that the distance between two adjacent first connecting parts is changed along with the change of the distance between two adjacent welding strips. Based on this, the pressing needle has a pressing part located right above the solder strip. At the moment, the pressing pin and the bearing strip are tightly connected together by using a second fastener, so that the relative fixation of the position between the pressing pin and the welding strip is realized.

Known from above application process, need not take out the tucking from the bearing strip on the whole, and only need remove the tucking in first mounting groove and can realize the adjustment of tucking position. Under the condition of improving the convenience of adjusting the position of the pressing pin, the compatibility of the pressing pin assembly and different screen printing plate battery pieces can be improved.

As an implementation manner, under the condition that the external thread is provided at the position where the first connecting portion is connected to the second fastening member, the second fastening member is a nut. The fixing of the pressing needle and the bearing strip is realized by utilizing the external thread section of the nut and the first connecting part, and the fixing device has the advantages of simple structure, low cost, convenience in disassembly and assembly and the like.

As an implementation, the nut is any one of a square nut, a hexagon nut, a butterfly nut, or a ring nut. When the nut is a square nut or a hexagonal nut, the nut is tightly connected with the external thread section of the first connecting part, and the occupied space of the nut is smaller. Based on this, the volume of the pressing needle assembly and the occupied space in actual use can be reduced as a whole. Under the condition that the nut is the butterfly nut or the ring nut, when the nut is disassembled and assembled, an operator can hold the butterfly nut or the ring nut by hands without using an additional disassembling and assembling tool. Therefore, the assembly and disassembly efficiency of the nut can be further improved.

As an implementation manner, under the condition that one first installation groove is formed in the carrying strip, the length of the first installation groove is smaller than that of the carrying strip.

Under the condition of adopting the technical scheme, the first mounting groove is formed in the bearing strip, and the positions of the first connecting parts of the pressing needles borne by the bearing strip can be adjusted in the first mounting groove according to actual needs so as to further improve the compatibility of the pressing needle assembly.

As an implementation manner, under the condition that the plurality of first mounting grooves are formed in the carrying strip, the sum of the lengths of the plurality of first mounting grooves is smaller than the length of the carrying strip.

Adopt under the condition of above-mentioned technical scheme, can set up a plurality of first mounting grooves on the bearing strip, insert the first connecting portion that the tucking that establishes in first mounting groove has and can adjust the position in first mounting groove according to actual need. Under the condition of ensuring that the position of the pressing pin carried by the bearing strip can be adjusted, the bearing capacity of the bearing strip can be improved on the whole due to the solid structure between every two adjacent first mounting grooves.

As an implementation manner, the first mounting groove is a waist groove or a rectangular groove.

In a third aspect, the utility model further provides a solder strip pressing device, which comprises a bearing disc and at least one pressing pin assembly. The bearing disc is provided with an installation space, and in the case that at least one pressing needle assembly comprises a plurality of pressing needle assemblies, each pressing needle assembly is borne by the bearing disc and is accommodated in the installation space at intervals.

Compared with the prior art, the beneficial effects of the welding strip pressing device provided by the utility model are the same as those of the pressing pin assembly in the technical scheme, and the details are not repeated here.

As an implementation mode, the bearing plate and the position of the bearing strip included by the pressing pin assembly are connected, a second mounting groove is formed in the position of the bearing strip, the two ends of the bearing strip are accommodated in the second mounting groove, and the pressing strip is fixedly connected to the upper portion of the second mounting groove.

When adopting above-mentioned technical scheme, hold the both ends of carrying the strip in the second mounting groove that the dish had is born to the carrier, recycle be located second mounting groove top and with bear dish fastening connection compress tightly the strip and realize carrying the strip and bear the further fixed of dish. Based on this, can effectual increase the fastening degree between carrier strip and the carrier plate to improve the installation stability of carrier strip. The pressing needle borne by the bearing strip has good stability, so that the pressing effect of the welding strip pressing device on the welding strip and the welding effect between the welding strip and the main grid line are ensured.

In addition, with the carrier strip card dress in the second mounting groove, when needs take off the carrier strip from the carriage, can be at first with compressing tightly the strip and dismantle from the carriage, then take out the carrier strip from the second mounting groove. Based on this, have the convenient effect of dismantlement.

In a fourth aspect, the utility model further provides a series welding machine, and the series welding machine applies the solder strip pressing device provided by the third aspect of the utility model.

Compared with the prior art, the beneficial effects of the stringer provided by the utility model are the same as those of the solder strip pressing device in the technical scheme, and the details are not repeated here.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic structural view of a pressing pin according to an embodiment of the present invention;

FIG. 2 is another schematic structural diagram of a pressing pin according to an embodiment of the present invention;

FIG. 3 is an exploded view of a needle pressing assembly provided by an embodiment of the present invention;

FIG. 4 is another schematic structural diagram of a carrier strip according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a second fastener provided in accordance with an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a solder strip pressing device according to an embodiment of the present invention;

FIG. 7 is an exploded view of a weld bead pressing apparatus provided in accordance with an embodiment of the present invention;

FIG. 8 is a diagram illustrating a state of use of the solder strip pressing apparatus according to the embodiment of the present invention;

fig. 9 is a schematic structural diagram of a carrier tray according to the present novel embodiment.

Reference numerals:

10-a press block, 100-a bearing part, 101-a first connecting part,

11-needle pressing head, 110-pressing holding part, 111-second connecting part,

12-a first fastener, 13-an elastic member;

2-a bearing strip, 20-a first mounting groove and 3-a second fastener;

4-bearing plate, 40-installation space, 41-installation hole,

42-second mounting groove, 43-enclosure and 44-pressing strip.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The solder strip hold-down devices provided in the prior art generally include a carrier plate and a press pin assembly. The presser pin assembly generally comprises a carrier strip, a presser pin and a fastener for securing the presser pin to the carrier strip. The bearing plate is penetrated to form an installation space. A plurality of carrier bars are received in the mounting space and carried by the side walls of the carrier tray. A plurality of mounting holes arranged in rows are formed through the bearing strip from top to bottom. Each mounting hole is fixedly connected with a pressing pin.

The welding strip pressing device provided by the prior art at least has the following problems: the opening positions of the mounting holes and the distance between the adjacent mounting holes are determined according to the positions of the main grid lines on the battery piece to be welded and the distance between the adjacent main grid lines. After the positions of the mounting holes and the distance between the adjacent mounting holes are determined, the positions of the pressing pins which are tightly mounted in the mounting holes are also determined. When the screen printing plate of the battery piece to be welded changes, that is, when the positions of the main grid lines on the battery piece and the distance between adjacent main grid lines change, the positions of the pressing pins corresponding to the main grid lines cannot change accordingly. Based on this, the compatibility of the solder strip pressing pin device provided by the prior art and the battery piece of different screen printing plates is poor.

The solder strip pressing device provided by the prior art generally needs to utilize a fastener to firmly connect the pressing pin and the mounting strip together. When the pressing pin needs to be detached from the mounting strip, a detaching tool is generally needed, so that the pressing pin is inconvenient to detach.

In addition, the pressing pin provided by the prior art is generally a linear pressing pin, and in the process of dismounting the linear pressing pin, an operator or a clamping device or the like is required to provide a supporting force for the linear pressing pin, otherwise, dismounting of the linear pressing pin cannot be realized. In the process of disassembly and assembly, when the supporting force is insufficient or the operation is wrong, the problem that the linear pressing pin falls off from the bearing strip is easily caused. Under the condition that the battery piece is arranged below the linear pressing pin, the fallen linear pressing pin can damage the battery piece. At this time, the yield of the battery plate in the processing process can be greatly reduced.

In view of the above technical problems, an embodiment of the present invention provides a pressing pin. Referring to fig. 1, the pressing pin comprises a pressing block 10 and a pressing pin head 11, wherein the pressing block 10 is provided with a bearing part 100 and a first connecting part 101, and the pressing pin head 11 is provided with a pressing holding part 110 and a second connecting part 111. The second connecting portion 111 extends along the first direction, one end of the second connecting portion 111 is connected to the pressing portion 110, and the other end of the second connecting portion 111 is connected to the supporting portion 100. The first connecting portion 101 extends along the second direction, one end of the first connecting portion 101 is connected to the carrying portion 100, and the other end of the first connecting portion 101 extends in a direction away from the carrying portion 100. The first direction and the second direction have an angle alpha between them, 0 deg. < alpha <180 deg..

When the pressing pin provided by the embodiment of the utility model is applied to welding strips of battery pieces, the pressing pin can be borne by the bearing strip. Specifically, a first mounting groove may be formed in the carrier strip, the forming direction of the first mounting groove may be parallel to the length direction of the main gate line on the battery piece, and the length extending direction of the first mounting groove may be perpendicular to the length direction of the main gate line on the battery piece. At this time, the first connection part 101 of the compact 10 may be inserted into the first mounting groove.

Referring to fig. 1, the first connecting portion 101 and the second connecting portion 111 are connected to the carrier portion 100, and an extending direction (a first direction) of the second connecting portion 111 and an extending direction (a second direction) of the first connecting portion 101 form an angle α, so that the pressing block 10 and the pressing pin head 11 form a zigzag-shaped pressing pin as a whole.

When the first connecting portion 101 of the pressing block 10 is inserted into the first mounting groove, the fold-line-shaped pressing pin may be integrally caught on the carrier strip. That is, the presser pin will not fall off from the carrier strip without fastening the presser pin to the carrier strip by the fastener. Based on this, the pressing pin can not cause the damage to the battery piece that is located its below because of droing in the dismouting in-process for the yield of battery piece improves greatly.

In addition, when the pressing needles are installed or the positions of the pressing needles are adjusted, the pressing needles can be adjusted to preset positions, and then the pressing needles and the bearing strip are fastened and connected together by uniformly utilizing the fasteners. In this case, the mounting efficiency of the presser pin can be improved.

Referring to fig. 1, the pressing block 10 and the pressing needle 11 may be various in material, and are not particularly limited thereto. For example, it may be a metal or a non-metal having a certain strength or rigidity. Since the actual application environment of the pressing pin is a high temperature environment (a higher temperature is generated during the welding process when the pressing pin presses and holds the welding strip), the pressing block 10, the pressing pin head 11, and the like need to have certain heat dissipation and thermal deformation resistance besides certain strength and rigidity.

Referring to fig. 1, the connection relationship between the carrying portion 100 and the first connection portion 101 may be various, and is not particularly limited herein. For example, the bearing part 100 and the first connecting part 101 may be formed integrally with the compact 10 (this is defined as an integral compact) by any one of casting, forging, or three-dimensional printing, and the integral compact has good stability. For another example, the bearing part 100 and the first connecting part 101 may be of a split structure, and then connected together by any fastening means such as welding, bonding, snapping, screwing or riveting (this is defined as a split pressing block). When the bearing part 100 or the first connecting part 101 needs to be replaced due to damage, the damaged part can be replaced separately to reduce the use cost of the compact 10.

Referring to fig. 1, the connection manner of the second connection portion 111 and the carrying portion 100 is also various, and is not limited in detail. For example, the bearing part 100 may be provided with a blind mounting hole, and the second connecting part 111 is inserted into the blind mounting hole. Specifically, an external thread may be formed at one end of the second connecting portion 111 connected to the mounting blind hole, and an internal thread may be formed in the mounting blind hole. Based on this, the second connection portion 111 is screwed into the mounting blind hole. The second connecting part 111 is inserted into the mounting blind hole to realize the fastening connection of the needle pressing head 11 and the pressing block 10, and other components for fastening the second connecting part 111 and the bearing part 100 do not need to be additionally arranged. Based on this, not only the removal/attachment of the presser pin head 11 and the presser block 10 is facilitated, but also the structure of the presser pin as a whole can be simplified.

Referring to fig. 1, for example, a mounting through hole is formed in the carrier part 100, and the second connecting part 111 penetrates through the mounting through hole and is fastened to the first fastening member 12. The first fastening member 12 may be a snap spring or any other fastening structure capable of fastening the second connecting portion 111 and the carrier portion 100 together. The second connecting part 111 penetrating through the mounting through hole is fastened and connected with the bearing part 100 by the first fastening piece 12, so that under the condition of improving the connection stability of the pressing needle head 11 and the pressing block 10, the stability and consistency of the pressing force exerted on the welding strip by the pressing needle can be provided, and the pressing effect of the pressing needle on the welding strip and the welding effect of the welding strip and the main grid line can be ensured.

Referring to fig. 1, for another example, an integrated acupressure needle may be formed of a pressure block 10 and an acupressure needle head 11. That is, the compact 10 and the press pin head 11 may be integrally formed by any one of forming methods such as casting, forging, or three-dimensional printing. The integral type tucking in practical application, can effectual reduction tucking head 11 for the risk that briquetting 10 rocked, under the condition that improves tucking stability, can confirm the pressure of pressurize to welding the area and weld the welding effect of area and main grid line.

Referring to fig. 1, as a possible implementation manner, the bearing part 100 is a bearing block, and the first connecting part 101 is a first connecting shaft. The second connecting portion 111 is a second connecting shaft, and the pressing portion 110 is a pressing block. An included angle between a central axis of the first connecting shaft and a central axis of the second connecting shaft is an included angle alpha between the first direction and the second direction, and alpha is 90 degrees. The bearing block and the first connecting shaft connected to one end of the bearing block form a linear or approximately linear pressing block. Under the condition that the central axis of the pressing and holding block is collinear with the central axis of the second connecting shaft, the pressing and holding block and the second connecting shaft form a straight-line-shaped or approximately straight-line-shaped pressing needle head. When alpha is 90 degrees, the pressing block 10 and the pressing needle head 11 form an L-shaped or approximately L-shaped pressing needle.

In practical application, the pressing needle head 11 can be vertically pressed down onto the solder strip as a whole, so that the welding effect between the solder strip and the main grid line on the battery piece is ensured under the condition of providing stable pressing force for the solder strip. In addition, when the entire pressing tip 11 is pressed down vertically to the solder ribbon, a component force perpendicular to the pressing force is not generated in the second connection portion 111 of the pressing tip 11. At this time, the second connection part 111 does not apply a tensile force or a compressive force to the load-bearing part 100 to ensure connection stability between the second connection part 111 and the load-bearing part 100.

Referring to fig. 2, as a possible implementation, the first connection portion 101 is a first connection shaft. The second connecting portion 111 is a second connecting shaft, and the pressing portion 110 is a pressing block. An included angle between a central axis of the first connecting shaft and a central axis of the second connecting shaft is an included angle alpha between the first direction and the second direction, alpha is not equal to 90 degrees, the pressing block is provided with a pressing surface, an included angle beta is formed between the pressing surface and the second connecting shaft, the pressing surface is parallel to the first connecting shaft, and beta is equal to alpha or 180 degrees-alpha. For example, α ═ β ═ 45 °, for example, α ═ 135 °, β ═ 45 °.

Referring to fig. 2, at this time, under the condition that the pressing surface is ensured to be vertically pressed down onto the welding strip, the second connecting shaft and the first connecting shaft are in a horn-shaped structure.

Referring to fig. 2, when the included angle α between the second connecting shaft and the first connecting shaft is an acute angle, the accommodating space formed between the second connecting shaft and the first connecting shaft is relatively small, and when the first connecting shaft is inserted into the mounting groove of the carrier strip, the second connecting shaft can be clamped on the outer wall of the carrier strip. At this moment, under the condition that the first connecting shaft and the bearing strip are not tightly connected through the fastener, the better connection stability between the pressing pin and the bearing strip can be ensured.

Referring to fig. 2, when the included angle α between the second connecting shaft and the first connecting shaft is an obtuse angle, the accommodating space formed between the second connecting shaft and the first connecting shaft is relatively large, and when the first connecting shaft is inserted into the mounting groove of the carrier strip, a relatively sufficient space is provided between the second connecting shaft and the carrier strip, so that the carrier strip can be applied to a carrier strip requiring a relatively large mounting space.

It should be further explained that the bearing block can be a cuboid, a cube, a sphere, an ellipsoid and the like. The first connecting shaft can be reasonably selected according to the structure of the first mounting groove matched with the first connecting shaft. For example, when the first mounting groove is a waist groove or a rectangular groove, the first connecting shaft may be a round shaft, a square shaft, or a round shaft having double cutting edges. In order to satisfy the bearing capacity of the pressing block 10 (generally, the larger the volume of the bearing block, the larger the bearing capacity), the volume of the pressing pin (generally, the smaller the volume of the pressing pin is, the better on the basis of satisfying the basic function of the pressing welding strip possessed by the pressing pin), and the installation space required by the pressing pin (generally, the smaller the volume of the first connecting shaft included in the pressing pin is, the better on the basis of satisfying the fastening connection relationship between the pressing pin and the bearing strip), the cross-sectional area of the first connecting shaft is smaller than the cross-sectional area of the bearing block.

The cross-sectional shapes of the pressure holding block and the second connecting shaft can be the same or different. The cross section shapes of the pressing block and the second connecting shaft can be any one of circular, oval, quadrilateral or special-shaped structures. The holding block and the second connecting shaft can be integrally formed to form an integrated pressing pin. The pressing block and the second connecting shaft can be formed in a split mode and then connected together in any existing fastening mode. The cross-sectional area of the pressure holding block can be larger than or fixed to the cross-sectional area of the second connecting shaft.

Referring to fig. 1, as an example, the bearing portion 100 is a stepped block, and the first connecting portion 101 is a circular shaft, and a central axis of the stepped block is collinear with a central axis of the circular shaft.

Referring to fig. 1, as an example, the second connecting portion 111 and the pressure holding portion 110 are circular shafts having collinear central axes, and the cross-sectional area of the pressure holding portion 110 is larger than that of the second connecting portion 111.

Referring to fig. 1, as a possible implementation manner, the presser pin further includes an elastic member 13, and the elastic member 13 is sleeved at a position between the upper surface of the holding block and the lower surface of the bearing block of the second connecting shaft. The elastic member 13 may be any other structure having energy absorbing and releasing functions, such as a spring or a leaf spring. In practical use, when the pressing force pressed on the solder strip is transmitted to the solder strip by the pressing block 10 and the pressing needle 11 in sequence, the elastic element 13 can absorb a part of the pressing force. That is to say, utilize elastic component 13 can cushion and exert the pressure from pressing the needle to the power of holding on the solder strip, under the condition that effectively reduces the power of holding and pressing and to the solder strip destruction, can improve solder strip and main grid line's welding quality and efficiency for photovoltaic module's yield improves greatly.

Referring to fig. 1, the elastic member 13 is a high temperature resistant elastic member, for example, the elastic member 13 may be a tungsten steel elastic member or a molybdenum steel elastic member. When the pressing pin presses the welding strip to weld, high temperature generated in the welding process can radiate to the elastic piece 13, and under the condition that the elastic piece 13 is a high-temperature-resistant elastic piece, high-temperature deformation can be effectively resisted, so that the using effect of the elastic piece 13 is ensured, and the service life is prolonged.

In a second aspect, the embodiment of the utility model further provides a needle pressing assembly. Referring to fig. 3, the presser pin assembly comprises a carrier strip 2, a plurality of presser pins and a plurality of second fasteners 3. The carrying strip 2 is provided with at least one first mounting groove 20. The first connecting portions 101 of each pressing pin are inserted into the first mounting grooves 20 at intervals, and the position of the first connecting portion 101 of each pressing pin in the first mounting groove 20 is adjustable, so that the distance between two adjacent first connecting portions 101 is changed. In a case where the first connection portion 101 reaches the preset position, the second fastening member 3 is fastened to the first connection portion 101.

Referring to fig. 3, in practical application, the needle pressing assembly provided by the present invention can be used to distribute a plurality of pressing needles on the carrier strip 2 at intervals. Specifically, the first connecting portion 101 of each presser pin may be inserted into the mounting groove at intervals, and the presser pin and the carrier strip 2 may be fastened together by the second fastening member 3 detachably connected to the first connecting portion 101 in a case where the position of each first connecting portion 101 is determined.

Referring to fig. 3, when the number of the bus bars or the intervals between the bus bars of the cell to be welded are changed, the positions of the solder strips corresponding to the bus bars are also changed. At this time, the position of the pressing pin on the carrier strip 2 needs to be adjusted so that the pressing portion 110 of the pressing pin corresponds to the solder ribbon. When adjusting the pressed position, the connection relationship between the second fastening member 3 and the first connection portion 101 can be adjusted from a tight fit to a loose fit, or the second fastening member 3 can be completely detached from the first connection portion 101. On this basis, the first connection portions 101 may be moved in the length direction of the first mounting groove 20 so that the interval between two adjacent first connection portions 101 varies with the interval between two adjacent solder strips. Based on this, the pressing portion 110 of the pressing pin is located right above the solder strip. At this time, the connection relationship between the second fastening member 3 and the first connection portion 101 is adjusted from loose fit to tight fit, so as to realize relative fixation of the position between the pressing pin and the solder strip.

From the above application process, the presser foot does not need to be taken out of the carrier strip 2 as a whole, and the adjustment of the position of the presser foot can be realized only by moving the presser foot in the first mounting groove 20. Under the condition of improving the convenience of adjusting the position of the pressing pin, the compatibility of the pressing pin assembly and battery pieces of different screen printing plates can be improved.

Referring to fig. 3, as an example, each carrier strip 2 is provided with a first mounting groove 20, and the extension of the first mounting groove 20 along the length direction of the carrier strip 2 is defined as the length of the first mounting groove 20. The length of the first mounting groove 20 may be slightly less than the length of the carrier strip 2. At this time, the position of the pressing pin can be determined according to the number of the main grid lines on the cell to be welded and the spacing between the main grid lines. When the number of the main grid lines on the battery piece to be welded and the distance between the main grid lines are changed, the number of the pressing pins can be increased or decreased in the first mounting groove 20, or the positions of the pressing pins can be adjusted along the length direction of the first mounting groove 20, so that the use requirements of the battery pieces of different screen printing plates can be met.

Referring to fig. 4, as another example, each carrier strip 2 is provided with a plurality of first mounting grooves 20 at intervals, and the extension of each first mounting groove 20 along the length direction of the carrier strip 2 is defined as the length of the first mounting groove 20. The sum of the lengths of all the first mounting grooves 20 on the carrier strip 2 may be slightly less than the length of the carrier strip 2. For the method of increasing the pressing pin in each first mounting groove 20, decreasing the pressing pin from each first mounting groove 20, or adjusting the position of the pressing pin in the first mounting groove 20, reference is made to the above example, and details are not repeated herein. Under the condition that the position of the pressing pin carried by the carrier strip 2 is ensured to be adjustable, the carrier strip 2 can be integrally improved in bearing capacity due to the solid structure between every two adjacent first mounting grooves 20.

Referring to fig. 3, as a possible implementation manner, the end of the first connecting part 101 connected with the second fastening member 3 has an external thread section, and the second fastening member 3 is a nut screwed with the external thread section. The fixing of the pressing block 10 is realized by the external thread section of the nut and the second fastener 3, and the fixing device has the advantages of simple structure, low cost, convenience in disassembly and assembly and the like.

Referring to fig. 3, the nut is any one of a square nut, a hexagonal nut, a wing nut, or a ring nut. When the nut is a square nut or a hexagonal nut, the nut is tightly connected to the external thread section of the first connection portion 101, and the space occupied by the nut is relatively small. Based on this, the volume of the pressing needle assembly and the occupied space in actual use can be reduced as a whole. In the case that the nut is a wing nut (see fig. 5) or a ring nut, the operator can hold the wing nut or the ring nut without using an additional dismounting tool during dismounting. Therefore, the assembly and disassembly efficiency of the nut can be further improved.

In a third aspect, the embodiment of the utility model further provides a solder strip pressing needle device. Referring to fig. 6 to 9, the solder strip pressing device includes a carrier plate 4 and at least one pressing pin assembly. The carrier plate 4 has a mounting space 40, and in the case that at least one presser pin assembly includes a plurality of presser pin assemblies, each presser pin assembly is carried by the carrier plate 4 and is accommodated at intervals in the mounting space 40.

Referring to fig. 6 to 9, in practical use, the solder strip pressing device provided in the embodiment of the present invention integrally moves the solder strip pressing device to a position above the battery string, and places the pressing portion of the pressing pin included in the plurality of pressing pin assemblies directly above the solder strip. And then the welding strip pressing device is integrally moved downwards until the pressing part presses the welding strip. When the battery piece screen printing plate is changed, the first connecting part is moved in the length direction of the first mounting groove under the condition that the second fastening piece is in loose fit with the first connecting part, and the second fastening piece is fastened and connected with the first connecting part again after the pressing and holding part is aligned with the welding strip on the battery piece again. Based on this, through the position of adjusting first connecting portion in first mounting groove, realize the position adjustment of tucking to the battery piece that adapts to different half tone. That is to say, the solder strip pressing device provided by the embodiment of the utility model has better compatibility when being applied to battery pieces of different screen printing plates.

Referring to fig. 6 to 9, the material of the carrier plate 4 may be various, and is not limited in detail. For example, the carrier tray 4 may be a metal carrier frame or a non-metal carrier frame having a certain strength or rigidity.

Referring to fig. 6 to 9, the outer contour of the carrier plate 4 and the mounting space 40 of the carrier plate 4 may be various in shape, and are not limited in detail. For example, the outer contour of the carrier plate 4 and the installation space 40 can be quadrilateral, specifically, square, rectangle, rhombus, parallelogram, etc. Also for example, the outer contour of the carrier plate 4 and the installation space 40 can be triangular, circular, oval or profiled. It is to be understood that the above-mentioned profiling means that the outer contour of the carrier plate 4 or the edge of the mounting space 40 is formed by straight lines, arcs or wavy lines, etc.

Referring to fig. 6 to 9, the carrier plate 4 may be various in structure, and is not particularly limited thereto. For example, the carrier plate 4 may include a carrier plate, and mounting holes 41 are formed near two opposite ends of the carrier plate, and the carrier plate 4 may be connected to an external device (the external device may be a robot that drives the carrier plate 4 to move up, down, left, and right) by using the mounting holes 41.

Referring to fig. 6 to 9, a mounting space 40 is formed through the carrier plate near the middle thereof. The inner wall of the installation space 40 may be formed by only the bearing plate, and at this time, a plurality of second installation grooves 42 corresponding to each other may be formed on the two opposite inner walls. Based on this, the two ends of the carrier strip 2 can be clamped in the corresponding second mounting grooves 42 to fix the carrier strip. It is also possible to provide a fence 43 projecting upwards from the mounting plate at a position on the carrier plate around the mounting space 40. The inner wall of the installation space 40 is now formed by the carrier plate and the surround 43. The second installation grooves 42 may be opened on the two opposite surrounding barriers 43 in a one-to-one correspondence manner.

Referring to fig. 6 to 9, as an example, the number of the plurality of second mounting grooves 42 on the same side of the mounting space 40 may be determined according to practical use. The number of the second mounting grooves 42 may be determined according to the length of the bus bars on the battery piece. Specifically, when the main gate line is relatively long, relatively many second mounting grooves 42 may be formed, and when the main gate line is relatively short, relatively few second mounting grooves 42 may be formed. For example, five second mounting grooves 42 are formed on two opposite inner walls of the mounting space 40 at intervals and uniformly. At this time, five carrier bars may be disposed at equal intervals in the installation space 40.

Referring to fig. 6 to 9, the second mounting groove 42 may be a U-shaped groove, and in this case, the portion of the carrier strip 2 in the U-shaped groove may be a round shaft having double cutting edges or a square shaft matching the U-shaped groove. When the presser pins carried by the carrier strip 2 need to be replaced or repaired, the carrier strip 2 can be removed from the carrier frame. In particular, the part of the carrier strip 2 in the U-shaped groove can be removed from the U-shaped groove.

Referring to fig. 6 to 9, the second mounting groove 42 may also be a C-shaped groove, in which case, the portion of the bearing strip 2 in the C-shaped groove may be a round shaft, and the fitting relationship between the round shaft and the groove may be transition fit or clearance fit. When the presser pins carried by the carrier strip 2 need to be replaced or repaired, the carrier strip 2 can be removed from the carrier plate 4. When the carrier strip 2 has sufficient space in the installation space 40, the carrier strip 2 can be rotated to a position where it is easy to replace the presser pin assembly.

Referring to fig. 6 to 9, as a possible implementation, a pressing bar 44 may be further fastened above the second mounting groove 42. The holding-down strip 44 provides further fixing of the carrier strip 2 received in the second mounting groove 42. Based on this, can effectual increase the fastening degree between carrier strip 2 and the carrier plate 4 to improve the installation stability of carrier strip 2. The pressing pin borne by the bearing strip 2 has good stability, so that the pressing effect of the welding strip pressing device on the welding strip and the welding effect between the welding strip and the main grid line are ensured.

In addition, the carrier strip 2 is clamped in the second mounting groove 42, and when the carrier strip 2 needs to be removed from the carrier tray 4, the pressing strip 44 can be firstly detached from the carrier tray 4, and then the carrier strip 2 can be taken out from the second mounting groove 42. Based on this, have the convenient effect of dismantlement.

Referring to fig. 6 to 9, the fastening manner of the pressing strip 44 and the carrier tray 4 or the enclosure 43 is various, and is not limited in particular. For example, the hold-down strips 44 may be glued, welded or riveted to the carrier plate or surround 43. For another example, the pressing bar 44 is fastened to the bearing plate or the enclosure 43 by bolts or screws.

The embodiment of the utility model also provides a series welding machine using the welding strip pressing device provided by the embodiment of the utility model.

Compared with the prior art, the beneficial effects of the stringer provided by the embodiment of the utility model are the same as those of the solder strip pressing device in the technical scheme, and the details are not repeated here.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The pressing needle is characterized by comprising a pressing block and a pressing needle head, wherein the pressing block is provided with a bearing part and a first connecting part, and the pressing needle head is provided with a pressing and holding part and a second connecting part;

the second connecting part extends along a first direction, one end of the second connecting part is connected with the pressing and holding part, and the other end of the second connecting part is connected with the bearing part;

the first connecting part extends along a second direction, one end of the first connecting part is connected with the bearing part, and the other end of the first connecting part extends in a direction far away from the bearing part;

the first direction and the second direction have an angle alpha between them, 0 deg. < alpha <180 deg..

2. The tucker of claim 1, wherein the carrier is a carrier block and the first connecting portion is a first connecting shaft; the second connecting part is a second connecting shaft, and the pressing part is a pressing block;

an included angle between a central axis of the first connecting shaft and a central axis of the second connecting shaft is an included angle alpha between the first direction and the second direction, and alpha is 90 degrees; the central axis of the pressure holding block is collinear with the central axis of the second connecting shaft; or the like, or, alternatively,

an included angle between a central axis of the first connecting shaft and a central axis of the second connecting shaft is an included angle alpha between the first direction and the second direction, and alpha is not equal to 90 degrees; the pressing block is provided with a pressing surface, an included angle beta is formed between the pressing surface and the second connecting shaft, the pressing surface is parallel to the first connecting shaft, and beta is equal to alpha or 180-alpha.

3. The presser pin of claim 2, further comprising an elastic member sleeved at a position where the second connecting shaft is located between an upper surface of the presser block and a lower surface of the carrier block.

4. The tucking bar of claim 2, wherein the bearing block is provided with a blind mounting hole, and the second connecting shaft is inserted into the blind mounting hole; or the like, or, alternatively,

the bearing block is provided with a mounting through hole, and the second connecting shaft penetrates through the mounting through hole and then is fixedly connected with the first fastening piece; or the like, or, alternatively,

the pressing needle is an integrated pressing needle.

5. A tucker assembly comprising a carrier strip, a plurality of tuckers, and a plurality of second fasteners; the bearing strip is provided with at least one first mounting groove; the first connecting part of each pressing needle is inserted into the first mounting groove at intervals, and the position of the first connecting part of each pressing needle in the first mounting groove is adjustable so as to change the distance between every two adjacent first connecting parts; and under the condition that the first connecting part reaches a preset position, the second fastening piece is fixedly connected with the first connecting part.

6. The needle pressing assembly according to claim 5, wherein the second fastening member is a nut when the first connecting portion is externally threaded at a position where the second connecting portion is connected to the second fastening member.

7. The needle pressing assembly according to claim 6, wherein the nut is any one of a square nut, a hexagonal nut, a wing nut, or a ring nut.

8. The needle pressing assembly according to claim 5, wherein in the case that one first mounting groove is formed on the carrier strip, the length of the first mounting groove is smaller than that of the carrier strip; or the like, or, alternatively,

under the condition that the bearing strip is provided with a plurality of first mounting grooves, the sum of the lengths of the first mounting grooves is smaller than the length of the bearing strip; and/or the presence of a gas in the gas,

the first mounting groove is a waist groove or a rectangular groove.

9. The welding strip pressing device is characterized by comprising a bearing disc and at least one pressing pin assembly; the bearing plate is provided with an installation space;

in the case that the at least one needle pressing assembly comprises a plurality of needle pressing assemblies, each needle pressing assembly is carried by the carrying disc and is accommodated in the mounting space at intervals.

10. The solder strip pressing device according to claim 9, wherein a second mounting groove is formed at a position where the bearing disc is connected with a bearing strip included in the pressing pin assembly, two ends of the bearing strip are accommodated in the second mounting groove, and a pressing strip is fastened above the second mounting groove.

11. A stringer, characterized in that the stringer employs the solder ribbon hold-down device of any one of claims 9 or 10.