Welding pressure head, welding mechanism and welding device

Abstract

The utility model discloses a welding pressure head, welding mechanism and welding device.The welding pressure head comprises a pressure head body and a first air connector, the pressure head body is provided with a first air inlet hole and an air outlet hole, the first air connector is arranged on the pressure head body and communicated with one end of the first air inlet hole, and the other end of the first air inlet hole is communicated with the air outlet hole. An air flow channel is further formed in the pressing head body and communicated with the other end of the first air inlet hole, so that the first air connector can blow out protective gas towards a workpiece to be welded from the air outlet hole through the first air inlet hole and the air flow channel, and the air flow channel is in a bent shape. Therefore, the flow path of the protective gas can be enlarged, so that the protective gas can form more uniform gas flow distribution at the gas outlet holes, the situation that the protective gas is concentrated and dispersed unevenly when blown out can be avoided, and it is ensured that a welding area is evenly protected.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, and more specifically, to a welding pressure head, a welding mechanism and a welding device. Background Art

[0002] During the battery production process, after the battery cell is inserted into the shell, the current collecting plate on the top of the battery cell needs to be accurately and firmly welded to the shell to ensure a stable and reliable connection between the internal structure of the battery and the external packaging.

[0003] In the actual production process, the oxidation problem of the welding surface is particularly prominent. Therefore, the welding surface is usually covered with a protective gas to isolate the welding surface from oxygen in the air and prevent the welding surface from being oxidized during the welding process. However, limited by the existing welding pressure head structure, it has the problem of poor protection effect. Utility Model Content

[0004] The utility model aims to provide a new technical solution for a welding pressure head, a welding mechanism and a welding device.

[0005] According to one aspect of the utility model, a welding pressure head is provided, comprising:

[0006] A ram body and a first gas joint, the ram body having a first air inlet and an air outlet, the first gas joint is arranged on the ram body and is connected with one end of the first air inlet, an air flow channel is also formed on the ram body, the air flow channel is connected with the other end of the first air inlet, so that the first gas joint can pass through the first air inlet and the air flow channel, and blow out protective gas from the air outlet toward the workpiece to be welded, and the air flow channel is curved.

[0007] Optionally, the air flow channel is S-shaped or spiral.

[0008] Optionally, the projection of the first air inlet hole is located in the middle of the air flow channel, so that the protective gas blown out by the first air joint can flow into the air flow channel from both sides.

[0009] Optionally, there are two first air connectors, each of the two sides of the pressure head body is provided with a first air inlet hole, each of the first air connectors is connected to a first air inlet hole, and the two first air inlet holes are respectively connected to the air flow channel.

[0010] Optionally, the airflow channel includes a first airflow channel, which is arranged in a curved manner along the surface of the pressure head body, one end of the first airflow channel is connected to the first air inlet, and the other end of the first airflow channel is connected to the air outlet.

[0011] Optionally, the airflow channel also includes a second airflow channel, which is connected to the first airflow channel. The first air joint can pass through the first air inlet, the first airflow channel and the second airflow channel in sequence, and blow out protective gas from the air outlet toward the workpiece to be welded.

[0012] Optionally, the second air flow channel is an annular air channel, and the annular air channel is connected to the air outlet.

[0013] Optionally, the first air flow channel includes a plurality of connected sub-channels, and an angle is formed between any two adjacent sub-channels.

[0014] Optionally, the projection of the first air inlet is located in the middle of the first air flow channel, so that the protective gas blown out by the first air connector can flow into the first air flow channel from both sides and merge into the annular air channel.

[0015] Optionally, a pressing plate is further included, wherein the pressing plate is arranged on the pressing head body, and a welding opening is provided on the pressing plate, and the welding opening is opposite to the air outlet.

[0016] Optionally, it also includes a fixing member and a second air joint, the fixing member has a second air inlet hole, the second air joint is arranged on the fixing member and is connected to one end of the second air inlet hole, and the other end of the second air inlet hole is connected to the welding port.

[0017] Optionally, a connecting member is further included, wherein the connecting member is located on the pressure head body, one side of the connecting member is connected to the pressure plate, the other side of the connecting member is connected to the fixing member, and a third air flow channel is provided between the connecting member and the fixing member, and the third air flow channel is connected to the second air inlet hole.

[0018] Optionally, the connecting member includes a first part, a second part and a third part, the third part is located between the first part and the second part, and the height of the third part is lower than the first part and the second part to form the third air flow channel between the connecting member and the fixing member.

[0019] According to another aspect of the utility model, a welding mechanism is provided, comprising the above-mentioned welding pressure head.

[0020] Optionally, a positioning mechanism is further included, the positioning mechanism includes a positioning member and a support plate, the welding pressure head and the positioning member are respectively arranged on the support plate, and the welding pressure head is used to weld the workpiece to be welded positioned by the positioning member.

[0021] According to another aspect of the utility model, a welding device is provided, comprising the above-mentioned welding mechanism.

[0022] A technical effect of the utility model is:

[0023] The welding ram includes a ram body and a first gas joint, the ram body is provided with a first air inlet hole and an air outlet hole, the first gas joint is arranged on the ram body and is connected with one end of the first air inlet hole, and an air flow channel is also formed on the ram body, the air flow channel is connected with the other end of the first air inlet hole, so that the first gas joint can pass through the first air inlet hole and the air flow channel, and blow out the shielding gas from the air outlet toward the workpiece to be welded, and the air flow channel is curved to increase the flow path of the shielding gas, so that the shielding gas can form a more uniform air flow distribution at the air outlet, thereby avoiding uneven concentration and dispersion of the shielding gas when blowing out, ensuring that the welding area is evenly protected, and improving the welding quality of the welding ram.

[0024] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present utility model and, together with the description, are used to explain the principles of the present utility model.

[0026] Figure 1 It is a schematic diagram of a welding pressure head according to an embodiment of the utility model;

[0027] Figure 2 This is an exploded view of a welding pressure head according to an embodiment of the utility model;

[0028] Figure 3 is another schematic diagram of a welding pressure head according to an embodiment of the utility model;

[0029] Figure 4 yes Figure 3 Sectional view at AA in the middle;

[0030] Figure 5 yes Figure 3 Sectional view at the middle BB;

[0031] Figure 6 It is a schematic diagram of a welding mechanism of an embodiment of the utility model;

[0032] Figure 7 It is a schematic diagram of a welding device according to an embodiment of the utility model;

[0033] Figure 8 It is another schematic diagram of a welding device according to an embodiment of the utility model.

[0034] Description of reference numerals:

[0035] 1. Pressure head body; 11. First air inlet hole; 12. Air flow channel; 121. First air flow channel; 122. Second air flow channel; 2. First air joint; 3. Press plate; 31. Welding port; 4. Fixing piece; 41. Second air inlet hole; 5. Second air joint; 6. Connecting piece; 61. First part; 62. Second part; 63. Third part; 64. Third air flow channel;

[0036] 100, welding pressure head; 200, turret; 300, transmission mechanism; 400, positioning mechanism; 4001, positioning member; 4002, support plate; 4003, signal member; 500, detection mechanism. DETAILED DESCRIPTION

[0037] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0038] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0039] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0040] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0041] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0042] The utility model provides a welding pressure head 100 which can be used in a welding device.

[0043] like Figures 1 to 5 As shown, the welding pressure head 100 provided by the utility model includes:

[0044] A ram body 1 and a first gas joint 2, the ram body 1 having a first air inlet hole 11 and an air outlet hole, the first air joint 2 is arranged on the ram body 1 and is connected with one end of the first air inlet hole 11, and an air flow channel 12 is also formed on the ram body 1, the air flow channel 12 is connected with the other end of the first air inlet hole 11, so that the first gas joint 2 can pass through the first air inlet hole 11 and the air flow channel 12, and blow out protective gas from the air outlet toward the workpiece to be welded, and the air flow channel 12 is curved.

[0045] Specifically, the pressure head body 1 can be made of high temperature resistant and corrosion resistant materials to ensure stable operation during the welding process. The pressure head body 1 is provided with a first air inlet 11 and an air outlet (not shown). One end of the first air inlet 11 is connected to the first air connector 2, and the other end of the first air inlet 11 is connected to the air flow channel 12, so that a flow path of the first air connector 2-first air inlet 11-air flow channel 12 can be formed.

[0046] The gas outlet hole can be located below the pressure head body 1, and the gas outlet hole is connected to the air flow channel 12 and is used to blow the protective gas to the workpiece to be welded. The first gas connector 2 is provided on the pressure head body 1, and is connected to one end of the first gas inlet hole 11 by threaded connection, clamping or other means. The first gas connector 2 is used to connect an external gas source and introduce the protective gas into the welding pressure head 100.

[0047] like Figure 4 and Figure 5 As shown, the air flow channel 12 is arranged in a curved shape, including but not limited to S-shaped curved shapes, spiral shapes, ring shapes and other irregular shapes. The specific shape can be designed according to actual needs. This curved air flow channel 12 design can increase the flow path of the shielding gas, so that the shielding gas can form a more uniform air flow distribution at the air outlet, thereby avoiding uneven concentration and dispersion of the shielding gas when blowing out, ensuring that the welding area is evenly protected, and improving the welding quality of the welding pressure head.

[0048] Furthermore, by setting the air flow channel 12 to be curved, the shielding gas can form a more uniform air flow distribution at the air outlet, and the shielding gas coverage area and coverage time of the welding area can be increased without increasing the shielding gas flow rate, thereby optimizing the shielding gas consumption and reducing production costs.

[0049] Optionally, the air flow channel 12 is S-shaped or spiral, which can increase the flow path of the shielding gas so that the shielding gas can form a more uniform air flow distribution at the air outlet, thereby avoiding uneven concentration and dispersion of the shielding gas when it is blown out, and ensuring that the welding area is evenly protected.

[0050] Optionally, the projection of the first air inlet 11 is located in the middle of the air flow channel 12 , so that the protective gas blown out by the first air connector 2 can flow into the air flow channel 12 from both sides.

[0051] like Figure 5 As shown, by setting the projection of the first air inlet 11 to be located in the middle of the air flow channel 12, the shielding gas flowing in from the first air inlet 11 has two flow paths, part of the shielding gas flows from the air flow channel 12 on one side to the air outlet, and the other part of the shielding gas flows from the air flow channel 12 on the other side to the air outlet, so that the shielding gas can form a more uniform airflow distribution at the air outlet, which can avoid uneven concentration and dispersion of the shielding gas when blowing out, and ensure that the welding area is evenly protected.

[0052] Optionally, there are two first air connectors 2, and each side of the pressure head body 1 has a first air inlet hole 11, each first air connector 2 is connected to a first air inlet hole 11, and the two first air inlet holes 11 are respectively connected to the air flow channel 12.

[0053] Specifically, the two first gas connectors 2 are respectively connected to an external gas source and introduce the shielding gas into the welding pressure head 100. According to the actual design, the two first gas inlet holes 11 can be located on opposite sides of the pressure head body 1, that is, the two first gas connectors 2 are connected to opposite sides of the pressure head body 1; the two first gas inlet holes 11 can also be located on adjacent sides of the pressure head body 1, that is, the two first gas connectors 2 are connected to adjacent sides of the pressure head body 1.

[0054] Optionally, the airflow channel 12 includes a first airflow channel 121, which is arranged in a curved manner along the surface of the pressure head body 1, one end of the first airflow channel 121 is connected to the first air inlet 11, and the other end of the first airflow channel 121 is connected to the air outlet.

[0055] like Figure 5 As shown, the first airflow channel 121 is arranged in a curved manner, which can increase the flow path of the shielding gas, so that the shielding gas can form a more uniform airflow distribution at the outlet, thereby avoiding uneven concentration and dispersion of the shielding gas when blowing out, and ensuring that the welding area is evenly protected. The first airflow channel 121 includes but is not limited to other irregular shapes such as S-shaped bends, spirals, and rings.

[0056] Optionally, the airflow channel 12 also includes a second airflow channel 122, which is connected to the first airflow channel 121. The first air joint 2 can pass through the first air inlet 11, the first airflow channel 121 and the second airflow channel 122 in sequence, and blow out protective gas from the air outlet toward the workpiece to be welded.

[0057] like Figure 5 As shown, the air flow channel 12 can be arranged to include a first air flow channel 121 and a second air flow channel 122 connected to each other, that is, the first air flow channel 121 and the second air flow channel 122 together form a flow path for the shielding gas, which can further increase the flow path of the shielding gas, so that the shielding gas can form a more uniform air flow distribution at the air outlet, thereby avoiding uneven concentration and dispersion of the shielding gas when it is blown out, and ensuring that the welding area is evenly protected.

[0058] Optionally, the second air flow channel 122 is an annular air channel, and the annular air channel is communicated with the air outlet.

[0059] like Figure 5 As shown, the first airflow channel 121 can be S-shaped or spiral, and the second airflow channel 122 can be annular. The annular second airflow channel 122 can be easily adapted to and connected with the air outlet, so as to facilitate the shielding gas to flow from the air outlet to the workpiece to be welded. Moreover, by setting the second airflow channel 122 as an annular airway, the shielding gas flows more evenly in the second airflow channel 122, so that the shielding gas can form a more uniform airflow distribution at the air outlet.

[0060] Optionally, the first airflow channel 121 includes a plurality of connected sub-channels, and any two adjacent sub-channels have an angle between them. For example, the first airflow channel 121 may be S-shaped, which can increase the flow path of the protective gas.

[0061] Optionally, the projection of the first air inlet 11 is located in the middle of the first air flow channel 121, so that the protective gas blown out by the first air connector 2 can flow into the first air flow channel 121 from both sides and merge into the annular air channel.

[0062] like Figure 5 As shown, by setting the projection of the first air inlet hole 11 to be located in the middle of the first air flow channel 121, the shielding gas flowing in from the first air inlet hole 11 has two flow paths, part of the shielding gas flows from the first air flow channel 121 on one side to the annular air channel, and the other part of the shielding gas flows from the first air flow channel 121 on the other side to the annular air channel, so that the shielding gas can form a more uniform airflow distribution at the air outlet, which can avoid uneven concentration and dispersion of the shielding gas when blowing out, and ensure that the welding area is evenly protected.

[0063] Optionally, it further comprises a pressing plate 3, the pressing plate 3 is arranged on the pressing head body 1, the pressing plate 3 has a welding opening 31, and the welding opening 31 is opposite to the air outlet. Figures 1 to 4 As shown, the welding process can be performed through the welding opening 31 on the pressure plate 3.

[0064] Optionally, it also includes a fixing member 4 and a second air connector 5, the fixing member 4 has a second air inlet hole 41, the second air connector 5 is on the fixing member 4 and communicates with one end of the second air inlet hole 41, and the other end of the second air inlet hole 41 is communicated with the welding port 31.

[0065] like Figure 1 and Figure 2 As shown, the second gas connector 5 is used to connect to an external gas source and blow away foreign matter such as dust from the welding port 31. The fixing member 4 is used to carry the second gas connector 5 and the pressure head body 1, and to install the welding pressure head 100 on the welding mechanism. The fixing member 4 can be an L-shaped structure, which can be easily installed and disassembled.

[0066] Optionally, a connecting member 6 is further included, wherein the connecting member 6 is located on the pressure head body 1, one side of the connecting member 6 is connected to the pressure plate 3, and the other side of the connecting member 6 is connected to the fixing member 4, and a third air flow channel 64 is provided between the connecting member 6 and the fixing member 4, and the third air flow channel 64 is connected to the second air inlet hole 41.

[0067] like Figure 3 to Figure 4 As shown, a connecting member 6 can be provided to connect the pressing plate 3 and the fixing member 4, which can simplify the assembly process of the welding pressure head 100. A third air flow channel 64 is formed between the connecting member 6 and the fixing member 4, and the third air flow channel 64 is connected to the second air inlet hole 41, so that the second air joint 5 can blow away foreign matter such as dust from the welding port 31 through the second air inlet hole 41 and the third air flow channel 64.

[0068] Among them, according to actual design, the third airflow channel 64 can be formed on the connecting member 6, the third airflow channel 64 can also be formed on the fixing member 4, or the third airflow channel 64 can also be formed on the connecting member 6 and the fixing member 4.

[0069] Optionally, the connecting member 6 includes a first part 61, a second part 62 and a third part 63, the third part 63 is located between the first part 61 and the second part 62, and the height of the third part 63 is lower than the first part 61 and the second part 62 to form the third air flow channel 64 between the connecting member 6 and the fixing member 4.

[0070] like Figure 3 to Figure 4 As shown, the height of the third portion 63 is lower than that of the first portion 61 and the second portion 62, that is, the middle of the connecting member 6 is recessed, so that a third air flow channel 64 can be formed on the connecting member 6. The first portion 61 and the second portion 62 are used to connect with the fixing member 4 to ensure the reliability of the connection.

[0071] like Figure 6 As shown, the utility model also provides a welding mechanism, including the welding pressure head 100 mentioned above.

[0072] Optionally, a positioning mechanism 400 is further included, the positioning mechanism 400 includes a positioning member 4001 and a support plate 4002, the welding pressure head 100 and the positioning member 4001 are respectively arranged on the support plate 4002, and the welding pressure head 100 is used to weld the workpiece to be welded positioned by the positioning member 4001.

[0073] like Figure 6 As shown, the welding ram 100 and the positioning member 4001 are respectively connected to the support plate 4002, and the positioning member 4001 is used to position the workpiece to be welded. Then the welding ram 100 welds the workpiece to be welded positioned by the positioning member 4001, thereby improving the welding reliability of the welding mechanism.

[0074] like Figure 7 and Figure 8 As shown, the utility model also provides a welding device, including the above-mentioned welding mechanism. The welding pressure head 100 is located on the welding mechanism, and the welding mechanism is arranged on the turret 200 of the welding device, so that the welding mechanism can rotate together with the turret 200.

[0075] Among them, the transmission mechanism 300 can include a driving source and a transmission gear, and the transmission gear can be connected to the welding mechanism, so that under the drive of the transmission mechanism 300, the welding mechanism can rotate together with the turret 200, and can also ensure the stability of the rotation speed and reduce the risk of welding distortion.

[0076] like Figure 6 As shown, a signal member 4003 may be further provided on the support plate 4002, and the welding device may further include a detection mechanism 500. During the rotation process, when the detection mechanism 500 detects the signal member 4003, the rotation is stopped, and at this time the welding pressure head 100 performs welding.

[0077] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0078] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A welding pressure head, characterized in that: include: A pressure head body (1) and a first gas joint (2), wherein the pressure head body (1) is provided with a first gas inlet hole (11) and a gas outlet hole, wherein the first gas joint (2) is arranged on the pressure head body (1) and is connected to one end of the first gas inlet hole (11), and an air flow channel (12) is also formed on the pressure head body (1), wherein the air flow channel (12) is connected to the other end of the first gas inlet hole (11), so that the first gas joint (2) can pass through the first gas inlet hole (11) and the air flow channel (12), and blow out protective gas from the gas outlet hole toward the workpiece to be welded, and the air flow channel (12) is curved.

2. A welding pressure head according to claim 1, characterized in that: The air flow channel (12) is S-shaped or spiral.

3. A welding pressure head according to claim 2, characterized in that: The projection of the first air inlet hole (11) is located in the middle of the air flow channel (12), so that the protective gas blown out of the first air connector (2) can flow into the air flow channel (12) from both sides.

4. A welding pressure head according to claim 1, characterized in that: The number of the first air connectors (2) is two, and each side of the pressure head body (1) is provided with a first air inlet hole (11), each of the first air connectors (2) is connected to a first air inlet hole (11), and the two first air inlet holes (11) are respectively connected to the air flow channel (12).

5. A welding pressure head according to claim 1, characterized in that: The airflow channel (12) comprises a first airflow channel (121), the first airflow channel (121) is arranged in a curved manner along the surface of the pressure head body (1), one end of the first airflow channel (121) is connected to the first air inlet (11), and the other end of the first airflow channel (121) is connected to the air outlet.

6. A welding pressure head according to claim 5, characterized in that: The air flow channel (12) further comprises a second air flow channel (122), wherein the second air flow channel (122) is connected to the first air flow channel (121), and the first air joint (2) can sequentially pass through the first air inlet hole (11), the first air flow channel (121) and the second air flow channel (122), and blow out protective gas from the air outlet toward the workpiece to be welded.

7. A welding pressure head according to claim 6, characterized in that: The second air flow channel (122) is an annular air channel, and the annular air channel is connected to the air outlet.

8. A welding pressure head according to claim 7, characterized in that: The first air flow channel (121) comprises a plurality of connected sub-channels, and any two adjacent sub-channels have an included angle between them.

9. A welding pressure head according to claim 7, characterized in that: The projection of the first air inlet (11) is located in the middle of the first air flow channel (121), so that the protective gas blown out of the first air connector (2) can flow into the first air flow channel (121) from both sides and merge into the annular air channel.

10. A welding pressure head according to claim 1, characterized in that: It also comprises a pressing plate (3), wherein the pressing plate (3) is arranged on the pressing head body (1), and the pressing plate (3) has a welding opening (31), and the welding opening (31) is located opposite to the air outlet.

11. A welding pressure head according to claim 10, characterized in that: It also comprises a fixing member (4) and a second air joint (5), wherein the fixing member (4) has a second air inlet hole (41), the second air joint (5) is arranged on the fixing member (4) and is connected to one end of the second air inlet hole (41), and the other end of the second air inlet hole (41) is connected to the welding port (31).

12. A welding pressure head according to claim 11, characterized in that: It also includes a connecting member (6), the connecting member (6) is located on the pressure head body (1), one side of the connecting member (6) is connected to the pressure plate (3), the other side of the connecting member (6) is connected to the fixing member (4), and a third air flow channel (64) is provided between the connecting member (6) and the fixing member (4), and the third air flow channel (64) is connected to the second air inlet hole (41).

13. A welding pressure head according to claim 12, characterized in that: The connecting member (6) comprises a first portion (61), a second portion (62) and a third portion (63); the third portion (63) is located between the first portion (61) and the second portion (62); the height of the third portion (63) is lower than the first portion (61) and the second portion (62), so as to form the third air flow channel (64) between the connecting member (6) and the fixing member (4).

14. A welding mechanism, characterized in that: The invention comprises a welding pressure head (100) as claimed in any one of claims 1 to 13.

15. A welding mechanism according to claim 14, characterized in that: The invention also comprises a positioning mechanism (400), wherein the positioning mechanism (400) comprises a positioning member (4001) and a support plate (4002), wherein the welding pressure head (100) and the positioning member (4001) are respectively arranged on the support plate (4002), and the welding pressure head (100) is used to weld a workpiece to be welded which is positioned by the positioning member (4001).

16. A welding device, characterized in that: Comprising the welding mechanism described in claim 14 or 15.

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