CN204975823U - A tucking and device for compressing tightly weld area - Google Patents

Abstract

The utility model relates to a pressing needle and a device for pressing welding strips. The indenter includes a cylindrical main body and a needle under the main body. The bottom of the needle is flat; when the indenter presses the ribbon, the contact between the bottom plane of the needle and the surface of the ribbon is surface contact. The device includes a main frame body and a support bar arranged on the main frame body. Both ends of the support bar are respectively fixed to two opposite transverse arms of the main frame body. The length direction of the support bar is consistent with the length direction of the welding strip. The main body of the indenter runs through the support bar and can move up and down relative to the support bar. When pressing the welding strip, the pressing needle and the support bar are arranged above the welding strip. The contact between the needle head and the ribbon is in surface contact, which increases the contact area, so the pressure of the pins on the ribbon and the battery sheet is reduced, the height adjustment accuracy requirements of the pins are reduced, and the operator's adjustment difficulty is thus reduced. At the same time The wear of the surface-to-surface contact is small, the loss of the indenter is reduced, the service life of the indenter is improved, and the equipment cost is reduced.

Description

Press pin and device for pressing welding ribbon

technical field

The utility model relates to photovoltaic cell processing equipment, in particular to a pressing needle and a device for pressing welding strips.

Background technique

When photovoltaic cells are welded in strings, it is necessary to press the photovoltaic ribbon tightly against the cells to be heated and welded. The key to this process has a lot to do with the indenter used. The needle head of the generally used indenter is inverted tapered with sharp corners. On the one hand, when the sharp corner of the needle is in contact with the ribbon, the pressure on the ribbon and the battery sheet is very high, which requires adjusting each pin to be at the same level, and the adjustment accuracy is very high. It is more difficult to adjust the machine. On the other hand, the sharp corners of the needles wear out after a long time of use, and the height of the needles needs to be readjusted, or even the indenter needs to be replaced, which increases the cost of the equipment.

Utility model content

The purpose of the utility model is to overcome the defects of the prior art, and provide a pressing needle and a device for pressing the welding strip, so as to reduce the pressure of the needle on the welding strip and the battery sheet, reduce the adjustment accuracy requirements, and reduce the adjustment of the machine. Difficulty and cost reduction.

In order to achieve the above object, the utility model adopts the following technical solutions:

The indenter used to compress the welding ribbon includes a cylindrical body, the indenter also includes a needle under the main body, and the bottom of the needle is flat; when the indenter is pressing the welding ribbon, the contact between the bottom plane of the needle and the surface of the welding ribbon is a surface touch.

Further, the needle head is a square plate, and the bottom plane of the needle head is a flat rectangle.

Further, when the pressing needle is used to press the welding ribbon, the length direction of the bottom plane of the needle head is perpendicular to the length direction of the welding ribbon.

Further, the length of the bottom plane of the needle is 2 to 3 times of the width of the welding strip.

Further, the indenter also includes a columnar needle tail above the main body, and the outer wall of the needle tail is provided with two vertical planes parallel to each other; when the indenter presses the welding ribbon, the two vertical planes are clamped by the external parts to prevent the pin from being pressed. The needle turns.

Furthermore, an annular groove is provided at the connection between the needle tail and the main body for sheathing the annular elastic piece.

The utility model also discloses a device for pressing the welding belt, which includes a main frame and a support bar arranged on the main frame, and the two ends of the support bar are respectively fixed to two opposite transverse arms of the main frame. The length direction of the support bar is consistent with the length direction of the welding strip; the device also includes the pressure needle stated above, the main body of the pressure needle runs through the support strip and can move up and down relative to the support strip; when pressing the welding strip, the pressure needle and the support strip are arranged on the belt above.

Further, the main body of the indenter is covered with a compression spring for providing a restoring force for the indenter. A shaft shoulder is provided at the connection between the main body of the indenter and the needle head, and the bottom end of the compression spring is against the annular surface of the shaft shoulder. on the bottom of the support bar.

The utility model also discloses another device for pressing the welding strip, which includes a main frame and a support bar arranged on the main frame, and the two ends of the support bar are respectively fixed to two opposite horizontal arms of the main frame. , the length direction of the support bar is consistent with the length direction of the welding strip; the device also includes the pressure needle stated above, the main body of the pressure needle runs through the support strip and can move up and down relative to the support strip; when pressing the welding strip, the pressure needle and the support strip are located at Above the welding strip; a horizontal bar is fixed above the supporting bar, and a bar-shaped groove is arranged below the horizontal bar, and the needle tail is inserted into the bar-shaped groove, and the two vertical planes of the needle tail are in contact with the inner side walls of the bar-shaped groove respectively.

The utility model also discloses another device for pressing the welding strip, which includes a main frame and a support bar arranged on the main frame, and the two ends of the support bar are respectively fixed to two opposite horizontal arms of the main frame. , the length direction of the support bar is consistent with the length direction of the welding strip; the device also includes the pressure needle stated above, the main body of the pressure needle runs through the support strip and can move up and down relative to the support strip; when pressing the welding strip, the pressure needle and the support strip are located at Above the welding strip; the annular groove sleeve of the pressing pin is provided with an annular limit shrapnel for limiting the maximum downward stroke of the pressing pin. The limiting shrapnel is placed above the support bar and contacts the upper surface of the support bar.

Compared with the prior art, the utility model has the beneficial effects as follows: 1) The contact between the needle head and the welding strip is surface contact, which increases the contact area, so the pressure of the pressing needle on the welding strip and the battery sheet is reduced, and the height of the pressing needle can be adjusted The accuracy requirements are reduced, the operator's adjustment difficulty is thus reduced, and at the same time, the surface-to-surface contact wear is small, reducing the loss of the indenter, the service life of the indenter is improved, and the equipment cost is reduced; 2) The bottom of the needle The length of the plane is 2 to 3 times the width of the ribbon. When the position of the busbar of the cell changes in a small range, and the position of the ribbon changes slightly following the busbar, the pressing pin can be directly carried out without adjustment. Compressing, eliminating the need for pressing needle adjustment time, reducing the workload of operators, and reducing the cost of processing time; 3) The horizontal bar is equipped with a bar-shaped groove to limit the rotation of the pressing needle, which can maintain the position of the pressing needle, Guaranteed good compression effect.

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.

Description of drawings

Figure 1 is an assembly perspective view of a device for pressing a welding ribbon;

Figure 2 is an enlarged view of area A in Figure 1;

Figure 3 is an assembled side view of the device for pressing the ribbon;

Fig. 4 is a partial three-dimensional enlarged view of the device for pressing the welding ribbon.

detailed description

In order to fully understand the technical content of the utility model, the technical solution of the utility model will be further introduced and illustrated below in conjunction with specific embodiments.

The specific structure of the first embodiment is shown in Fig. 1 to Fig. 4 . The pressing pin 40 used for pressing the soldering ribbon in the first embodiment includes a cylindrical main body 41 , a needle head 42 below the main body 41 , and a cylindrical pin tail 43 above the main body 41 .

As shown in FIG. 4 , the needle head 42 is a square plate, and the bottom of the needle head 42 is a plane 421 . The bottom plane 421 of the needle 42 is a flat rectangle. The length of the bottom plane 421 of the needle 42 is 2 to 3 times the width of the solder strip. When the pressing pin 40 is used to press the welding ribbon, the length direction of the bottom plane 421 of the needle head 42 is perpendicular to the length direction of the welding ribbon, and the contact between the bottom plane 421 of the needle head 42 and the surface of the welding ribbon is surface contact. In general, when the ribbon is pressed, the surface of the ribbon is in contact with the middle of the bottom plane 421 of the needle 42, and the part of the bottom plane 421 of the needle 42 that is not in contact with the surface of the ribbon is in contact with the upper surface of the cell.

The outer wall of the needle tail 43 is provided with two vertical planes 432 parallel to each other ( FIG. 3 ). When the indenter 40 presses the solder ribbon, the two vertical planes 432 are used to be clamped by external parts to prevent the indenter 40 from rotating. An annular groove 431 is provided at the joint between the needle tail 43 and the main body 41 for sheathing the annular shrapnel.

The specific structure of the second embodiment is shown in Fig. 1 to Fig. 4 . The device for pressing the welding ribbon of the second embodiment includes a main frame body 10, a support bar 20 provided on the main frame body 10, and the pressing pin 40 of the first embodiment. When pressing the welding strip, the pressing pin 40 and the support bar 20 are arranged above the welding strip.

As shown in FIG. 1 , both ends of the support bar 20 are respectively fixed to two opposite transverse arms 11 of the main frame body 10 . The position of the support bar 20 on the cross arm 11 is adjustable. The pressing pins 40 are distributed along the length direction of the support bar 20 . The main body 41 of the pressing needle 40 penetrates the support bar 20 and can move up and down relative to the support bar 20 . When the device compresses the welding strip, the length direction of the support bar 20 is consistent with the length direction of the welding strip, and the length direction of the bottom plane 421 of the needle head 42 of the pressing pin 40 is perpendicular to the length direction of the welding strip.

As shown in FIGS. 1 to 4 , the main body 41 of the pressing needle 40 is sheathed with a compression spring 22 for providing a restoring force for the downward movement of the pressing needle 40 . A shoulder 411 is provided at the connection between the main body 41 and the needle head 42 of the pressing needle 40 . The bottom end of the compression spring 22 abuts against the annular surface of the shaft shoulder 411 , and the top end of the compression spring 22 abuts against the bottom surface of the support bar 20 .

In addition, as shown in FIGS. 1 to 4 , a horizontal bar 30 is fixed above the support bar 20 , and the length direction of the horizontal bar 30 is consistent with the length direction of the support bar 20 . Below the bar 30 is provided a bar-shaped groove 31 ( FIG. 4 ) for preventing the pressing needle 40 from rotating around its own axis. The needle tail 43 of the pressing needle 40 is inserted into the bar-shaped groove 31 , and the two vertical planes 432 ( FIG. 3 ) of the needle tail 43 are respectively in contact with the inner side walls of the bar-shaped groove 31 .

In addition, as shown in FIG. 2 , the annular groove 431 of the pressing pin 40 is sheathed with the annular limiting shrapnel 21 for limiting the maximum downward stroke of the pressing pin 40 . The limiting elastic piece 21 is placed above the support bar 20 and is in contact with the upper surface of the support bar 20 .

The technical content of the utility model is further described above only with examples, so that readers can understand more easily, but it does not mean that the implementation of the utility model is limited to this, and any technical extension or re-creation done according to the utility model shall be Protected by the utility model.

Claims (10)

1. The pressing needle for pressing the welding ribbon, which includes a cylindrical body, is characterized in that the pressing needle also includes a needle under the main body, and the bottom of the needle is flat; when the pressing needle is pressing the welding ribbon , the contact between the bottom plane of the needle and the surface of the ribbon is surface contact. 2 . The pressing needle for pressing the soldering ribbon according to claim 1 , wherein the needle head is a square plate-shaped body, and the bottom plane of the needle head is a flat rectangle. 3 . 3. The pressing pin for pressing the welding ribbon according to claim 2, characterized in that, when the pressing pin is used as pressing the welding ribbon, the length direction of the bottom plane of the needle head is perpendicular to the welding ribbon Longitudinal direction. 4. The pressing pin for pressing the welding ribbon according to claim 2, characterized in that the length of the bottom plane of the needle head is 2 to 3 times the width of the welding ribbon. 5. The indenter for pressing the soldering ribbon according to any one of claims 1 to 4, characterized in that the indenter also includes a columnar pin tail above the main body, and the outer walls of the pin tail are provided with parallel pins. The two vertical planes; when the pressure pin presses the welding ribbon, the two vertical planes are clamped by the external parts to prevent the pressure pin from rotating. 6 . The pressing needle for pressing the welding ribbon according to claim 5 , characterized in that, an annular groove is provided at the connection between the tail of the needle and the main body for sheathing the annular shrapnel. 7 . 7. A device for pressing the welding ribbon, comprising a main frame body and a support bar arranged on the main frame body, the two ends of the support bar are respectively fixed to two opposite cross arms of the main frame body, the The length direction of the support bar is consistent with the length direction of the welding strip. It is characterized in that the device also includes the press pin according to any one of claims 1 to 6, the main body of the press pin penetrates the support bar and can move up and down relative to the support bar. ; When pressing the welding strip, the pressure pin and the support bar are arranged above the welding strip. 8. The device for pressing the welding ribbon according to claim 7, characterized in that, the main body of the pressing pin is covered with a compression spring for providing a restoring force for the pressing pin, and the main body of the pressing pin and the needle head A shaft shoulder is provided at the joint, the bottom end of the compression spring abuts against the annular surface of the shaft shoulder, and the top end of the compression spring abuts against the bottom surface of the support bar. 9. A device for pressing the welding ribbon, comprising a main frame body and a support bar arranged on the main frame body, the two ends of the support bar are respectively fixed to two opposite cross arms of the main frame body, the The length direction of the support bar is consistent with the length direction of the welding strip. It is characterized in that the device also includes the press pin according to claim 5 or 6, the main body of the press pin penetrates the support bar and can move up and down relative to the support bar; When the welding belt is tightened, the pressing needle and the support bar are arranged above the welding belt; a horizontal bar is fixed above the support bar, and a bar-shaped groove is provided below the horizontal bar, and the tail of the needle is inserted into the bar-shaped groove Inside, and the two vertical planes of the needle tail are respectively in contact with the inner side walls of the bar groove. 10. A device for pressing the welding ribbon, comprising a main frame body and a support bar arranged on the main frame body, the two ends of the support bar are respectively fixed to two opposite cross arms of the main frame body, the The length direction of the support bar is consistent with the length direction of the welding strip. It is characterized in that the device also includes the press pin according to claim 6, the main body of the press pin penetrates the support bar and can move up and down relative to the support bar; When the belt is used, the pressure needle and the support strip are arranged above the welding strip; the annular groove of the pressure needle is provided with an annular limit shrapnel for limiting the maximum downward stroke of the pressure needle, and the limit shrapnel is placed on the support strip above and in contact with the upper surface of the support bar.