CN219093912U - Welding head for tin adding welding and welding device - Google Patents

Abstract

The utility model relates to the technical field of welding devices, and discloses a welding head for tin adding welding and a welding device. The soldering head for tin adding soldering comprises: the welding head can move on the X axis, the Y axis and the Z axis so that the welding head can move to a welding position on the junction box, the bottom end surface of the welding head can be adhered with tin wires, and the welding head can be heated to a preset temperature; the thermocouple sensor is fixedly connected with the welding head and is positioned on one side of the welding head, the measuring end of the thermocouple sensor is positioned above the bottom end surface of the welding head, the distance H between the measuring end of the thermocouple sensor and the bottom end surface of the welding head is 3mm-20mm, and the thermocouple sensor is used for detecting the heating temperature of the welding head. The welding head for tin-adding welding can prolong the service life of the welding head and reduce the replacement frequency of the welding head, thereby shortening the downtime of the whole machine and reducing the welding cost.

Description

Welding head and welding device for tinning welding

technical field

The utility model relates to the technical field of welding devices, in particular to a welding head for tinning welding and a welding device.

Background technique

At present, in order to ensure the welding quality between the bus bar and the junction box in the photovoltaic module, tinning welding is usually used, that is, the welding head is heated during welding to melt the tin wire attached to the bottom end surface of the welding head. for welding. Wherein, the heating temperature of the welding joint is detected by a sensor.

However, when the current sensor is installed on the welding head, the detection position of the sensor on the welding head is usually not considered, so that the sensor cannot detect the actual heating temperature of the welding head more accurately, resulting in the detection value of the sensor and the welding head. There is a large gap between the actual heating temperature values, and it is easy to appear that the actual heating temperature value of the welding head is relatively high, but at this time the detection value is equal to the preset heating temperature value, causing the welding head to be in a state of high heat and high temperature, thus affecting The service life of the welding head makes the frequency of replacing the welding head higher, which in turn leads to longer downtime of the whole machine and higher welding costs.

Therefore, there is an urgent need for a soldering head and a soldering device for tinning soldering, which can solve the above problems.

Utility model content

An object of the present invention is to provide a welding head for tinning welding, which can increase the service life of the welding head and reduce the replacement frequency of the welding head.

For this purpose, the utility model adopts the following technical solutions:

Tips for tinning soldering, including:

A welding head, the welding head can move on the X-axis, Y-axis, and Z-axis, so that the welding head can move to the welding position on the junction box, the bottom end surface of the welding head can adhere to tin wire, and The welding head can be heated to a preset temperature;

A thermocouple sensor, fixedly connected to the welding head and located on one side of the welding head, the measuring end of the thermocouple sensor is located above and between the bottom end surface of the welding head The spacing H is 3mm-20mm, and the thermocouple sensor is used to detect the heating temperature of the welding head.

Further, the distance H between the measuring end of the thermocouple sensor and the bottom end surface of the welding head is 5mm.

Further, the thermocouple sensor is fixedly connected to the welding head through a plurality of bent plates.

Further, the welding head is also provided with a wiring groove, and the wiring groove is used for installing the connecting wires on the thermocouple sensor.

Further, the bottom end surface of the welding head is provided with a clamping groove, and the clamping groove is used to clamp the insert, and the insert can stick to the molten tin wire, and the insert is clamped to the After the clamping groove is inside, the part of the clamping groove below the insert forms a tin wire placement groove.

Further, the welding head is made of molybdenum alloy.

Another object of the present invention is to provide a welding device, which can shorten the downtime of the whole machine and lower the welding cost.

For this purpose, the utility model adopts the following technical solutions:

The welding device includes the welding head for tinning welding as described above, and the welding head can also rotate around the Z axis, and the welding device also includes:

a heating component, used to heat the welding head, so that the welding head reaches the preset temperature;

The first driving part, the second driving part, the third driving part and the fourth driving part, the first driving part is used to drive the welding head to rotate around the Z axis, the second driving part, the third driving part The component and the fourth driving component are respectively used to drive the welding head to move along the X axis, the Y axis and the Z axis.

Further, the welding device also includes a water-cooling unit for water-cooling the welding head, and the water-cooling unit includes:

a first metal piece, one end of the first metal piece is fixedly connected to the welding head;

The second metal part and a plurality of flow channels extending along the Z axis, the other end of the first metal part is fixedly connected to the second metal part, and a plurality of the flow channels are arranged at intervals and parallel to the second metal part Inside the component, cooling water flows in the flow channel.

Further, the welding device also includes an air-cooling element for air-cooling the welding head, the air-cooling element moves with the movement of the welding head, and the air-cooling element includes:

An air pipe, cold air flows in the air pipe, and the air outlet of the air pipe is located on one side of the welding head, and the air pipe is used to blow cold air to the welding head.

Further, the welding device also includes:

A CCD camera, the CCD camera is used to detect the welding position on the junction box before welding and the welding spot at the welding position after welding.

The beneficial effects of the utility model are:

By moving the welding head on the X-axis, Y-axis, and Z-axis, the welding head can accurately move to the welding position and cover the welding position, and the welding head is heated to the preset temperature, so that the welding head is in the welding position. The tin wire at the position is hot-melted, and then the heating is stopped and the welding joint is cooled, so that the tin wire after the hot-melt at the welding position is solidified, thereby completing the soldering between the bus bar and the junction box; at the same time, using The thermocouple sensor is fixedly connected to the welding head and is located on one side of the welding head, and the measuring end of the thermocouple sensor is located above the bottom end surface of the welding head and the distance H between the bottom end surface of the welding head is 3mm-20mm. The position enables the thermocouple sensor to accurately detect the actual heating temperature of the welding head, so that the detection value of the thermocouple sensor is basically equal to the actual heating temperature of the welding head, and the actual heating temperature of the welding head will not appear higher, and this When the detection value of the thermocouple sensor is equal to the preset heating temperature value, it can avoid the welding head from being in a state of high temperature and high temperature all the time, so as to improve the service life of the welding head, reduce the frequency of replacing the welding head, and make tin welding Machine downtime is less and welding costs are lower with welding heads.

Description of drawings

Fig. 1 is the structural representation of the welding head provided by the utility model;

Fig. 2 is the structural representation of the welding device provided by the utility model;

Fig. 3 is a side view of the welding device provided by the utility model;

Fig. 4 is a schematic diagram of the assembly structure of the first driver, the second driver and the welding head provided by the utility model;

FIG. 5 is a partially enlarged schematic diagram of A in FIG. 4 .

Reference signs:

1-welding head; 111-clip groove; 112-tin wire placement groove; 2-heating component; 3-CCD camera; 4-pressing component; Fixed block; 5-first connecting plate; 6-water-cooling piece; 61-first metal piece; 62-second metal piece; 71-trachea; 8-insert; 10-first driving piece; Plate; 12-second driving element; 13-third connecting plate; 14-third driving element; 15-fourth connecting plate; 16-fourth driving element; 17-thermocouple sensor; 18-bending plate.

Detailed ways

In order to make the technical problem solved by the utility model, the adopted technical solution and the achieved technical effect clearer, the technical solution of the utility model will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

In the description of the present utility model, unless otherwise clearly stipulated and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or a Integral; it can be mechanically or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, and may also include the first and second features being in direct contact with each other. The features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this embodiment, the terms "up", "down", "left", "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operations. It does not indicate or imply that the structure or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in description, and have no special meaning.

At present, when the sensor is placed on the welding head, the specific detection position of the sensor on the welding head is usually not considered, so that the sensor cannot detect the actual heating temperature of the welding head more accurately, resulting in the detection value of the sensor and the actual heating of the welding head. There is a large gap between the temperature values, and it is easy to cause the actual heating temperature value of the welding head to be high, but at this time the detection value is equal to the preset heating temperature value, causing the welding head to be in a state of high heat and high temperature, thus affecting the welding head. The service life of the welding head makes the frequency of replacing the welding head higher, which in turn leads to longer machine downtime and higher welding costs for the welding head used for tinning welding.

Embodiment one

For this reason, a kind of welding head for tinning welding is proposed in the present embodiment, as shown in Figure 1 and Figure 2, this welding head for adding tinning includes welding head 1 and thermocouple sensor 17; Wherein, welding head 1 can Move on the X-axis, Y-axis, and Z-axis so that the welding head 1 can move to the welding position on the junction box for welding, and the bottom surface of the welding head 1 can adhere to tin wire; the welding head 1 can be heated to a predetermined Set the temperature so that the tin wire adhered on the bottom end surface of the welding head 1 can be hot-melted to carry out tin welding; the thermocouple sensor 17 is fixedly connected with the welding head 1 and is positioned at one side of the welding head 1, and the measurement of the thermocouple sensor 17 The end is located above the bottom end surface of the welding head 1, and the distance H between the measuring end of the thermocouple sensor 17 and the bottom end surface of the welding head 1 is 3mm-20mm. The thermocouple sensor 17 is used to detect the heating temperature of the welding head 1. Wherein, the distance H is specifically shown as a mark H in FIG. 1 , and the X-axis, Y-axis and Z-axis are specifically shown as arrows in FIG. 2 .

By moving the welding head 1 on the X-axis, Y-axis, and Z-axis, the welding head 1 can accurately move to the welding position and cover the welding position, and the welding head 1 is heated to a preset temperature, so that the welding head The tin wire at the welding position on 1 is melted, and then the heating is stopped and the welding head 1 is cooled, so that the tin wire after melting at the welding position is solidified, thereby completing the tinning between the bus bar and the junction box welding. In this embodiment, welding the bus bar to the junction box is a common assembly method for photovoltaic modules in the prior art. Therefore, the specific welding principle between the bus bar and the junction box will not be described in detail here.

Compared with the prior art, the welding head for tinning welding in this embodiment has considered the detection position of the thermocouple sensor 17 on the welding head 1; The distance H between them is 3mm-20mm, this position can make the thermocouple sensor 17 detect the actual heating temperature of the welding head 1 more accurately, so that the detection value of the thermocouple sensor 17 is basically equal to the actual heating temperature of the welding head 1, The actual heating temperature value of the welding head 1 will not appear higher, but at this time the detection value of the thermocouple sensor 17 is equal to the problem of the preset heating temperature value, so that the welding head 1 can be avoided from being in a state of high temperature and high temperature all the time, so as to improve The service life of the welding head 1 is reduced, and the frequency of replacing the welding head 1 is reduced, so that the downtime of the welding head for tinning welding is shorter and the welding cost is lower.

Specifically, as shown in Table 1, it is a comparison table of the service life of each welding head under different distances H. At present, the distance H between the measuring end of the thermocouple sensor 17 and the bottom end surface of the welding head 1 is set at 3mm- When the range is outside 20mm, that is, when H<3mm or H>20mm, the average service life of the welding head 1 is 22706 times; in this embodiment, the service life of the welding head 1 with three different spacings H is tested and verified; Wherein, three kinds of different distances H are H=3mm, H=5mm, H=8mm respectively; Welding head 1 will send out a replacement alarm after 63,500 times of welding, that is to say, the welding head 1 at this time has been damaged and needs to be replaced; when H=5mm, that is, the measuring end of the thermocouple sensor 17 When the distance between the welding head 1 and the bottom end surface is 5mm, the welding head 1 will send out a replacement alarm after 64520 times of welding, that is to say, the welding head 1 has been damaged at this time, and the welding head 1 needs to be replaced; When H=8mm, that is, when the distance between the measuring end of the thermocouple sensor 17 and the bottom end surface of the welding head 1 is 8mm, the welding head 1 will send out a replacement alarm after the number of times of welding is 62255 times, that is to say, at this time The welding head 1 has been damaged, and the welding head 1 needs to be replaced.

Table 1

As shown in Table 1, according to the above test process, it can be obtained that the distance H between the measuring end of the thermocouple sensor 17 and the bottom end surface of the welding head 1 is set in the range between 3mm-20mm, and the welding head 1 can be adjusted. The average service life is increased to about 60,000 times. Compared with currently setting the distance H between the measuring end of the thermocouple sensor 17 and the bottom end surface of the welding head 1 within a range other than 3mm-20mm, in this embodiment The service life of the welding head 1 can be increased by at least 2-3 times.

In this embodiment, as shown in Table 1, the distance H between the measuring end of the thermocouple sensor 17 and the bottom end surface of the welding head 1 can be preferably 5mm, so that the welding head 1 can be used for a long time to the greatest extent. service life, thereby reducing the replacement frequency of the welding head 1 to the greatest extent, and ensuring the high working efficiency of the whole machine.

Further, as shown in FIG. 1 , the thermocouple sensor 17 is fixedly connected to the welding head 1 through a plurality of bent plates 18, that is, the bent plate 18 can press the thermocouple sensor 17 against the side of the welding head 1 , and the two ends of the bent plate 18 are fixedly connected to the welding head 1 , thereby fixing the thermocouple sensor 17 on the welding head 1 . Wherein, a plurality of bent plates 18 are arranged at intervals, so that the thermocouple sensor 17 can be relatively stably fixed on the welding head 1 . In this embodiment, there are two bent plates 18 . Wherein, the specific structure and size of the bent plate 18 are not limited, as long as the thermocouple sensor 17 can be fixedly arranged on the welding head 1 through the bent plate 18 .

Specifically, a wiring groove is also provided on the welding head 1 , and the wiring groove is used for installing the connecting wires on the thermocouple sensor 17 , so that the connecting wires on the thermocouple sensor 17 can be summarized in a unified manner. Among them, the welding head 1 is made of molybdenum alloy, which has the characteristics of fast heating and temperature rise, small temperature error, wear resistance and small deformation due to heat generation. In other embodiments, the welding head 1 can also be made of other materials, which are not specifically limited here.

Further, as shown in FIG. 1, a clamping groove 111 is provided on the bottom surface of the welding head 1, and the clamping groove 111 is used to clamp the insert 8, and the insert 8 can stick to the melted tin wire, so that the The tin wire is picked up; and after the insert 8 is clamped in the clamping groove 111, the part below the insert 8 in the clamping groove 111 forms a tin wire placement groove 112, and the tin wire placement groove 112 can provide a placeable space, so that the tin wire can be accommodated in the tin wire placement groove 112 . Wherein, the insert 8 can specifically be made of a material that can stick to tin, so as to be able to better stick to the tin wire.

Embodiment two

A welding device is proposed in this embodiment, including the soldering head for tinning welding in Embodiment 1; specifically, as shown in Figure 2 and Figure 3, the welding device also includes a water cooling element 6 for water cooling the welding head 1; the water cooling part 6 includes a first metal part 61, a second metal part 62 and a plurality of flow channels extending along the Z axis; wherein, one end of the first metal part 61 is fixedly connected to the welding head 1, and the first metal part 61 The other end is fixedly connected to the second metal part 62 , a plurality of flow channels are spaced apart and arranged in parallel inside the second metal part 62 , and cooling water flows in the flow channels. Wherein, each flow channel can be integrally formed and arranged inside the second metal part 62 , or can be arranged inside the second metal part 62 in a split structure.

Specifically, when the welding head 1 needs to be water-cooled, the cooling water in each flow channel can absorb the heat conducted from the first metal part 61 to the second metal part 62, thereby reducing the amount of heat connected to the first metal part 61. The heat on the welding head 1 is used to achieve the purpose of water-cooling the welding head 1.

It is worth noting that during the entire welding process, the welding head 1 needs to be cooled twice, and the first cooling is when the welding head 1 adheres to the tin wire, that is, after the welding head 1 is heated for the first time, so that The insert 8 sandwiched by the bottom end surface of the welding head 1 can be heated to stick the tin wire after the surface is melted, and then the first rapid cooling is performed on the welding head 1, so that the insert 8 can solidify with the tin wire to form a A whole, so as to realize the adhesion of tin wire on the bottom surface of the welding head 1; the second cooling is when the welding head 1 is welded, that is, when the welding head 1 drops along the Z axis to completely cover the welding position, the The welding head 1 is heated for the second time, so that the tin wire on the insert 8 is rapidly melted and overflowed to the welding position, and then the welding head 1 is rapidly cooled for the second time, so that the soldering position at the welding position Tin wire can solidify quickly to complete the soldering work.

Further, the welding device also includes an air-cooled part for air-cooling the welding head 1, and the air-cooled part moves with the movement of the welding head 1; as shown in Figure 2 and Figure 3, the air-cooled part includes a gas pipe 71, and Cold air flows in the air pipe 71 , and the air outlet of the air pipe 71 is located on one side of the welding head 1 , and the air pipe 71 is used to blow the cold air to the welding head 1 . Wherein, the shape of the air pipe 71 is bent, so as to ensure that the air outlet of the air pipe 71 can face directly to one side of the welding head 1 while the air pipe 71 will not interfere with other structures in the welding device, so that the wind The cooling effect of the cold piece butt welding joint 1 is better.

By arranging two kinds of cooling parts, the water cooling part 6 and the air cooling part, the welding joint 1 can be water-cooled and air-cooled at the same time, so that the cooling effect of the welding joint 1 is better, and the rapid cooling and cooling of the welding joint 1 can be realized; The specific cooling method of the butt welding joint 1 can be appropriately selected according to the actual cooling requirement, so that the cooling method of the butt welding joint 1 is more flexible.

Further, as shown in Figures 2 and 3, the welding device also includes a CCD camera 3, and the CCD camera 3 is used to detect the specific position of the welding position on the junction box before welding, so that the welding head 1 can be connected according to the position of the CCD camera 3. The detection result is accurately moved to the welding position on the junction box; and, the CCD camera 3 is also used to detect the welding spot at the welding position after welding, so as to detect the actual welding effect between the junction box and the bus bar; meanwhile, The CCD camera 3 can also detect the specific placement position of the tin wire, so that the soldering head 1 can accurately move to the tin wire and adsorb the tin wire on the insert 8 on the bottom surface of the soldering head 1 .

Specifically, as shown in FIGS. 2 and 3 , the welding device also includes a pressing assembly 4, which is provided on opposite sides of the welding head 1, and the pressing assembly 4 can move as the welding head 1 moves. , the pressing assembly 4 is used to press the welding head 1 horizontally to the top surface of the junction box before welding, and then make the welding head 1 descend along the Z axis and cover the welding position for welding work, so that the junction box can be avoided during the entire welding process. If there is a problem of tilting or shaking, the welding quality between the bus bar and the junction box can be guaranteed.

Further, as shown in Figure 4 and Figure 5, the welding head 1 can also rotate around the Z axis, the welding device also includes a first connecting plate 5, the second metal piece 62 is fixedly arranged on the first connecting plate 5, the first connecting The plate 5 can drive the welding head 1 to move on the X-axis, Y-axis, and Z-axis and rotate around the Z-axis, that is, the movement of the first connecting plate 5 and the welding head 1 is synchronized; the pressing assembly 4 includes a guide post 41 and an elastic member 42 , a fixed block 44 and a pressure plate 43, the fixed block 44 is fixedly connected to the first connecting plate 5 and is located on one side of the welding head 1, one end of the guide post 41 is fixedly connected to the fixed block 44, one end of the pressure plate 43 is connected to the guide post 41 The other end is slidingly connected, the other end of the pressure plate 43 can extend to the welding head 1, the elastic member 42 is sleeved on the guide post 41 and is located between the fixed block 44 and the pressure plate 43, and the bottom end surface of the pressure plate 43 is lower than the welding head 1 bottom surface, so that the pressing plate 43 can be horizontally and elastically pressed against the top surface of the junction box prior to the welding head 1 .

Specifically, when the first connecting plate 5 drives the welding head 1 and the pressing assembly 4 to move to the welding position, the welding head 1 and the pressing assembly 4 continue to move downward along the Z axis. When moving to the pressing assembly When the pressure plate 43 in 4 is horizontal and elastically pressed against the top surface of the junction box, the welding head 1 does not completely cover the welding position at this time; then the welding head 1 and the pressing assembly 4 continue to move downward along the Z axis, Until the welding head 1 completely covers the welding position, during this process, the pressing plate 43 can move upward along the Z-axis on the guide post 41 under the abutment of the junction box to compress the elastic member 42, so that the pressing plate 43 can Under the action of the elastic force of the elastic member 42, it is pressed against the top surface of the junction box, so as to achieve elastic pressure against the junction box, so as to better protect the junction box. In this embodiment, the elastic member 42 may specifically be a compression spring.

It is worth noting that after the welding is completed, when the first connecting plate 5 drives the welding head 1 and the pressing assembly 4 to move upward along the Z-axis, the welding head 1 will be separated from the junction box one step earlier than the pressure plate 43, that is, During the whole process of the welding head 1 moving upward along the Z axis until it leaves the junction box, the pressing plate 43 can always be pressed against the junction box, thereby preventing the junction box from being damaged by the force of the welding head 1 moving upward along the Z axis. Lifting it up can ensure that the junction box will not be deflected or shaken after the welding is completed.

Specifically, as shown in Figure 2 and Figure 3, the welding device also includes a heating assembly 2, a first driving element 10, a second driving element 12, a third driving element 14 and a fourth driving element 16; wherein, the heating assembly 2 is used It is used to heat the welding head 1 so that the welding head 1 can reach a preset temperature; the first driving part 10 is used to drive the welding head 1 to rotate around the Z axis, the second driving part 12, the third driving part 14 and the fourth driving part 16 They are respectively used to drive the welding head 1 to move along the Z axis, the Y axis and the X axis. In this embodiment, the heating assembly 2 may specifically be a common pressure swing heating mechanism or other heating mechanisms in the prior art, which is not limited herein.

Specifically, as shown in FIGS. 4 and 5, the driving end of the first driving member 10 is drivingly connected to the first connecting plate 5, and the first driving member 10 is used to drive the first connecting plate 5 and the welding head 1 around the Z axis. rotate. In this embodiment, the first driving member 10 may specifically be a rotary motor. The structure of the first driving member 10 is not limited thereto, as long as it can drive the welding head 1 to rotate around the Z axis.

By arranging the first driving member 10 to drive the welding head 1 to rotate around the Z axis, to realize the rotation correction of the welding head 1 relative to the welding position, so that the welding head 1 can be rotated to a suitable angle before welding, thereby effectively It is beneficial to ensure the final welding effect.

Specifically, as shown in FIGS. 2 and 3 , the welding device also includes a second connecting plate 11; wherein, the fixed end of the first driving member 10 is arranged on the second connecting plate 11, and the driving end of the second driving member 12 is connected to the second connecting plate 11. The second connecting plate 11 is driven and connected, and the second driver 12 is used to drive the second connecting plate 11 and the welding head 1 to move along the Z axis; and one end of the air pipe 71 is fixedly connected to the second connecting plate 11, so that the air pipe 71 can be connected with The movement of the welding head 1 is synchronized to ensure that the air pipe 71 can always be located at one side of the welding head 1 during the movement of the welding head 1 , so that the cold air in the air pipe 71 can blow to the welding head 1 . Wherein, the air pipe 71 will not rotate around the Z axis with the welding head 1, and since there is a certain distance between the air pipe 71 and the welding head 1 and the pressing assembly 4, the welding head 1 and the pressing assembly 4 rotate around the Z axis. The shaft will not interfere with the trachea 71 when it rotates, so as to ensure the normal performance of the trachea 71 .

Further, as shown in FIGS. 2 and 3 , the welding device also includes a third connecting plate 13; wherein, the fixed end of the second driving member 12 is arranged on the third connecting plate 13, and the driving end of the third driving member 14 is connected to the third connecting plate 13. The third connecting plate 13 is driven and connected, and the third driving member 14 is used to drive the third connecting plate 13 and the welding head 1 to move along the Y axis.

Specifically, as shown in Figures 2 and 3, the welding device also includes a fourth connecting plate 15; wherein, the fixed end of the third driving member 14 is arranged on the fourth connecting plate 15, and the driving end of the fourth driving member 16 is connected to the fourth connecting plate 15. The fourth connecting plate 15 is driven and connected, and the fourth driving member 16 is used to drive the fourth connecting plate 15 and the welding head 1 to move along the X axis.

Through the above-mentioned arrangement structure, the structure of the entire welding device can be made relatively compact while meeting the movement requirements of the welding head 1 , so that the occupied area of the welding device is small.

It is worth noting that the second drive member 12, the third drive member 14, and the fourth drive member 16 can specifically be a linear cylinder structure, a servo motor plus a screw drive structure, or a servo motor plus a conveyor belt structure. For the second drive part 12. The specific structures of the third driving member 14 and the fourth driving member 16 are not limited, as long as the welding head 1 can move in all directions. Wherein, the specific structures of the first connecting plate 5 , the second connecting plate 11 , the third connecting plate 13 and the fourth connecting plate 15 are not limited.

The specific welding process of the welding device in the present embodiment is as follows:

First, after the tin wire is placed, the specific position of the tin wire is detected by the CCD camera 3 and fed back to the first driver 10, the second driver 12, the third driver 14 and the fourth driver 16, so that the first The driver 10, the second driver 12, the third driver 14 and the fourth driver 16 sequentially drive the soldering head 1 to move in various directions to the top of the tin wire; then the second driver 12 drives the soldering head 1 along the The Z axis moves down to cover the tin wire; at the same time, the heating assembly 2 heats the welding head 1 for the first time, so that the tin wire melts and adheres to the insert 8 on the welding head 1, and then stops heating. Here, the heating temperature of the butt welding joint 1 only needs to be able to ensure the melting of the surface of the tin wire.

Afterwards, the welding joint 1 is cooled for the first time through the water cooling unit 6 and the air cooling unit at the same time, so that the tin wire is rapidly cooled and solidified with the insert 8 to form an integrated structure, and then the welding joint 1 is moved upward along the Z axis. to complete the adhesion to the tin wire.

Then, make the CCD camera 3 detect the specific welding position and feed back to the first driver 10, the second driver 12, the third driver 14 and the fourth driver 16, so that the first driver 10, the second driver 12. The third driving member 14 and the fourth driving member 16 sequentially drive the welding head 1 to move in various directions to above the welding position.

Then, the second driving member 12 drives the welding head 1 to further descend along the Z axis. At this time, the pressing plate 43 of the pressing assembly 4 also descends along the Z axis along with the welding head 1. During the descent, the pressing plate 43 will be ahead of the welding head. 1 Contact the junction box; continue to descend so that the pressing plate 43 can compress the elastic member 42 upward under the abutment of the junction box, so that the pressing plate 43 can be horizontally and elastically pressed against the junction box under the elastic force of the elastic member 42 At the same time, the welding head 1 can be lowered to completely cover the welding position, and the heating element 2 can heat the welding head 1 for the second time to melt the tin wire at the welding position, then stop heating and connect the welding head 1 The second cooling is carried out, and the welding joint 1 is rapidly cooled to the tin wire at the welding position through the water-cooling part 6 and the air-cooling part 8 at the same time to solidify.

Then, when the welding is completed, the welding head 1 is raised along the Z axis, and at the same time, the heating element 2 is used to heat the welding head 1 for the third time, so that the contact surface between the insert 8 of the welding head 1 and the welding position is thermally fused , so as to facilitate the smooth detachment of the welding head 1 from the welding point; and, in the process of rising upward, the pressing plate 43 of the pressing component 4 will leave the junction box after the welding head 1, that is, the welding head 1 will leave the junction box upwards Finally, at this time, the pressing plate 43 is also pressed against the top surface of the junction box, so as to ensure that the junction box will not be lifted up by the upward force of the welding head 1 after the welding is completed.

Finally, make each driver drive the welding head 1 to move back to the top of the tin wire, and repeat the above-mentioned steps of picking up the tin wire and welding to carry out the next welding work; at the same time, make the CCD camera 3 pair the junction box and the bus bar The solder joints between them are detected to ensure the welding effect between the junction box and the bus bar.

The above process needs to be heated three times. The first heating is low heat, that is, the heating temperature of the welding joint 1 is relatively low, so that the surface of the tin wire can be melted so as to facilitate the adhesion of the insert 8; the second heating is high heat, that is, for the The heating temperature of the welding head 1 is relatively high, so that the tin wire can be quickly melted for welding; the third heating is also low heat, so that the welding head 1 can be easily separated from the solder joint.

And, in the above-mentioned heating process, since the distance H between the measuring end of the thermocouple sensor 17 and the bottom end surface of the welding head 1 is kept at 3 mm-20 mm, the thermocouple sensor 17 can accurately detect the actual temperature of the welding head 1. The heating temperature is to ensure the service life of the welding head 1.

The above content is only a preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and scope of application. The content of this specification should not be understood as Limitations on the Invention.

Claims (10)

1. A soldering tip for soldering, comprising:

the welding head (1) can move on an X axis, a Y axis and a Z axis so that the welding head (1) can move to a welding position on a junction box, a bottom end surface of the welding head (1) can be adhered with tin wires, and the welding head (1) can be heated to a preset temperature;

the thermocouple sensor (17) is fixedly connected with the welding head (1) and is positioned on one side of the welding head (1), the measuring end of the thermocouple sensor (17) is positioned above the bottom end face of the welding head (1) and the distance H between the thermocouple sensor and the bottom end face of the welding head (1) is 3mm-20mm, and the thermocouple sensor (17) is used for detecting the heating temperature of the welding head (1).

2. Soldering head according to claim 1, characterized in that the distance H between the measuring end of the thermocouple sensor (17) and the bottom end face of the soldering head (1) is 5mm.

3. Soldering head according to claim 1, characterized in that the thermocouple sensor (17) is fixedly connected to the soldering head (1) by means of a plurality of bending plates (18).

4. Soldering head according to claim 1, characterized in that the soldering head (1) is further provided with wiring grooves for mounting connection lines on the thermocouple sensor (17).

5. Soldering head according to any one of claims 1-4, characterized in that the bottom end surface of the soldering head (1) is provided with a clamping groove (111), the clamping groove (111) is internally provided with an insert (8), the insert (8) can stick molten tin wires, and after the insert (8) is clamped into the clamping groove (111), a tin wire placing groove (112) is formed in the part of the clamping groove (111) located below the insert (8).

6. Soldering head according to any one of claims 1 to 4, characterized in that the soldering head (1) is made of a molybdenum alloy material.

7. Welding device, characterized in that it comprises a soldering tip according to any one of claims 1-6, said welding tip (1) being further rotatable about a Z-axis, said welding device further comprising:

a heating assembly (2) for heating the welding head (1) so as to bring the welding head (1) to the preset temperature;

the welding head comprises a first driving piece (10), a second driving piece (12), a third driving piece (14) and a fourth driving piece (16), wherein the first driving piece (10) is used for driving the welding head (1) to rotate around a Z axis, and the second driving piece (12), the third driving piece (14) and the fourth driving piece (16) are respectively used for driving the welding head (1) to move along an X axis, a Y axis and the Z axis.

8. Welding device according to claim 7, characterized in that the welding device further comprises a water cooling element (6) for water cooling the welding head (1), the water cooling element (6) comprising:

a first metal piece (61), wherein one end of the first metal piece (61) is fixedly connected with the welding head (1);

the cooling device comprises a second metal piece (62) and a plurality of flow channels extending along the Z axis, wherein the other end of the first metal piece (61) is fixedly connected to the second metal piece (62), the flow channels are arranged on the inner side of the second metal piece (62) at intervals in parallel, and cooling water flows in the flow channels.

9. Welding device according to claim 8, characterized in that the welding device further comprises an air-cooled member for air-cooling the welding head (1), the air-cooled member being moved with the movement of the welding head (1), the air-cooled member comprising:

the air pipe (71) is provided with cold air in the air pipe (71), an air outlet of the air pipe (71) is positioned on one side of the welding head (1), and the air pipe (71) is used for blowing the cold air to the welding head (1).

10. The welding apparatus of claim 7, wherein the welding apparatus further comprises:

and the CCD camera (3) is used for detecting welding points at the welding position on the junction box before welding and the welding position after welding.

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