Oblique insertion welding device for cylindrical battery

Abstract

The utility model relates to the technical field of battery tab welding, and discloses an oblique insertion welding device for a cylindrical battery. Comprising a base; the welding mechanism comprises a supporting vertical plate, a first guide rail, a welding assembly and a driving assembly, wherein the supporting vertical plate and the first guide rail are obliquely and fixedly arranged on the base. The first guide rail is arranged on the supporting vertical plate, and the welding assembly comprises a first mounting plate slidably arranged on the first guide rail and a welding needle fixedly arranged on the first mounting plate; the driving assembly is arranged above the welding assembly; the conveying mechanism comprises a transverse conveying groove and a feeding conveying groove which are arranged below the welding assembly, a first pushing air cylinder is arranged at one end of the transverse conveying groove, and a steering part is installed at the other end of the transverse conveying groove; an electrode holder is arranged in the middle of the transverse conveying groove; the feeding conveying groove is communicated and connected with the transverse conveying groove; according to the oblique insertion welding device for the cylindrical battery, the distance between each steel shell and the center hole of a roll core is kept consistent through oblique arrangement, and a welding needle can be accurately inserted into the center hole of the roll core to weld a negative electrode lug of the roll core.

Description

Technical Field

[0001] The utility model relates to the technical field of battery tab welding, in particular to a cylindrical battery oblique insertion welding device. Background Art

[0002] Cylindrical lithium batteries have a wide range of uses and are used in many fields, including portable electronic devices, power tools, electric vehicles, etc. With the continuous development of technology, cylindrical lithium batteries will continue to be used in a wider range of fields. Therefore, the manufacturing process of cylindrical lithium batteries is also increasingly demanding, including the welding process between the negative electrode tab on the battery cell and the battery steel shell.

[0003] The negative electrode tabs on the cells of cylindrical lithium batteries are generally welded to the bottom of the battery steel shell by pin welding. When the clearance between the steel shell and the winding core is too large, the winding core will shake freely in the steel shell, resulting in a lack of a reference point for the center hole of the winding core. The welding pin can easily get stuck on the winding core, causing damage to the winding core and deformation of the welding pin.

[0004] Therefore, there is an urgent need for a cylindrical battery oblique insertion welding device to solve the above problems. Utility Model Content

[0005] Based on the above, the purpose of the utility model is to provide a cylindrical battery oblique insertion welding device to solve the problem that when the winding core shakes randomly in the steel shell, the welding needle is easily inserted into the winding core, thereby causing damage to the winding core and deformation of the welding needle.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model provides a cylindrical battery oblique insertion welding device comprising: a base;

[0008] The welding mechanism comprises a support vertical plate and a first guide rail fixedly arranged on the base in an inclined manner, a welding assembly and a driving assembly; the first guide rail is arranged at the central axis position of the support vertical plate, the welding assembly comprises a first mounting plate slidably mounted on the first guide rail and a welding pin fixedly arranged on the first mounting plate; the driving assembly is arranged above the welding assembly and is used to drive the welding pin to move up and down;

[0009] The feeding mechanism comprises a transverse conveying trough and a feed conveying trough provided below the welding assembly, wherein a first pushing cylinder is provided at one end of the transverse conveying trough, and a steering member is installed at the other end of the transverse conveying trough; an electrode holder coaxial with the welding needle is installed in the middle of the transverse conveying trough; the feed conveying trough and the transverse conveying trough are conductively connected;

[0010] The detection mechanism is arranged above the feeding mechanism and is used to detect whether the central hole of the battery cell is unobstructed.

[0011] As an optional technical solution for a cylindrical battery oblique insertion welding device, the welding assembly also includes a second guide rail, a second mounting plate and a clamp for mounting the welding needle, the second guide rail is longitudinally mounted on the first mounting plate, the second mounting plate is slidably mounted on the second guide rail, the clamp is fixed to the lower end of the second mounting plate, and an insulating pad is provided between the clamp and the second mounting plate.

[0012] As an optional technical solution for a cylindrical battery oblique insertion welding device, the driving assembly includes a first driving cylinder and a second driving cylinder, the first driving cylinder is installed at the upper end of the supporting vertical plate, and the telescopic end of the first driving cylinder is connected to the top of the first mounting plate; the second driving cylinder is installed at the upper end of the first mounting plate, and the telescopic end of the second driving cylinder is connected to the top of the second mounting plate.

[0013] As an optional technical solution for a cylindrical battery oblique insertion welding device, a downward pressure cylinder is installed on the supporting vertical plate, and a guide member that can move up and down is also provided on the first guide rail. The telescopic end of the downward pressure cylinder is connected to the guide member, and the welding needle is arranged to pass through the center hole of the guide member.

[0014] As an optional technical solution for a cylindrical battery oblique insertion welding device, a discharge sensor is installed on the side of the first mounting plate.

[0015] As an optional technical solution for a cylindrical battery oblique insertion welding device, the detection mechanism includes a supporting column arranged at one end of the transverse conveying trough close to the first pushing cylinder, a first connecting block is laterally provided at the upper end of the supporting column, a detection cylinder is installed on the first connecting block, a second connecting block is connected to the output end of the detection cylinder, a probe and a detection sensor are provided on the second connecting block, and the probe can move up and down relative to the second connecting block.

[0016] As an optional technical solution for a cylindrical battery oblique insertion welding device, two guide rods are movably provided on the first connecting block, and the two guide rods are located on both sides of the detection cylinder. One end of one of the guide rods is fixed to the second connecting block, and one end of the other guide rod passes through the second connecting block and extends to the bottom of the second connecting block. A pressure block is installed at the end of the guide rod extending to the bottom of the second connecting block.

[0017] As an optional technical solution for a cylindrical battery oblique insertion welding device, a defective product output trough is provided at one end of the transverse conveying trough close to the steering member and is conductively connected to the transverse conveying trough, and a second pushing cylinder is provided opposite to the defective product output trough.

[0018] As an optional technical solution for a cylindrical battery oblique insertion welding device, the baffle plate of the transverse conveying trough close to the welding mechanism is made of magnetic material.

[0019] As an optional technical solution for a cylindrical battery oblique insertion welding device, a spiral guide groove is provided on the outer diameter of the steering member, and the guide groove is conductively connected to the transverse feed trough, and the guide groove is used to change the posture of the cylindrical battery after welding when it is discharged.

[0020] The beneficial effects of the utility model are:

[0021] The utility model provides a cylindrical battery oblique insertion welding device, comprising: a base, a welding mechanism, a feeding mechanism and a detection mechanism; the welding mechanism is fixedly arranged on the base in an inclined manner, the feeding mechanism is arranged below the welding mechanism, and the detection mechanism is arranged above one side of the feeding mechanism, and is used to detect whether the center hole of the winding core is unobstructed. In the above structure, the semi-finished cylindrical lithium battery is conveyed from the feed conveying trough to the transverse conveying trough, and the central hole of the winding core of the semi-finished cylindrical lithium battery is detected by the detection mechanism to see if it is a good product with a through hole. After the detection, if it is a good product, the first pushing cylinder pushes the semi-finished cylindrical lithium battery to the electrode seat position. At this time, the welding needle moves down and inserts into the central hole of the winding core to weld the negative electrode ear. If it is a defective product, the welding needle does not weld it; the semi-finished cylindrical lithium battery is continuously conveyed to the transverse conveying trough through the feed conveying trough, and the semi-finished cylindrical lithium battery that has been welded in front is conveyed out from the spiral guide groove of the guide member, and the defective products that have not been welded are pushed into the defective product output trough for collection by the second pushing cylinder. The cylindrical battery oblique insertion welding device is achieved by tilting the welding mechanism and the feeding mechanism. When the semi-finished cylindrical lithium battery is conveyed into the transverse conveying trough, the semi-finished cylindrical lithium battery is attached to the baffle on one side of the transverse conveying trough in an inclined posture toward the welding mechanism. At the same time, the core is tightly attached to the inclined inner wall of the steel shell under the action of its own gravity. At this time, no matter how the core shakes, the center hole distance between the steel shell and the core remains consistent. Since the welding needle and the core are tilted at the same time, the center hole of the welding needle and the core are on the same axial line, so that the welding needle can be accurately inserted into the center hole of the core to weld its negative electrode ear. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the cylindrical battery oblique insertion welding device according to the embodiment of the utility model;

[0023] Figure 2 This is a right side view of the cylindrical battery oblique insertion welding device according to the embodiment of the utility model;

[0024] Figure 3 This is a left side view of the cylindrical battery oblique insertion welding device according to the embodiment of the utility model;

[0025] Figure 4 This is a structural schematic diagram of a welding mechanism in an embodiment of the utility model;

[0026] Figure 5 for Figure 4 A is an enlarged schematic diagram;

[0027] Figure 6 It is a structural schematic diagram of the welding mechanism in another perspective in the embodiment of the utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the detection mechanism in the embodiment of the utility model;

[0029] Figure 8 It is a structural schematic diagram of the detection mechanism in another perspective in the embodiment of the utility model.

[0030] In the figure:

[0031] 1. Base;

[0032] 2. Welding mechanism; 201. Supporting plate; 202. First guide rail; 21. Welding assembly; 211. First mounting plate; 212. Second guide rail; 213. Second mounting plate; 214. Clamping member; 215. Welding needle; 216. Discharge sensor; 22. Driving assembly; 221. First driving cylinder; 222. Second driving cylinder; 23. Pressing cylinder; 24. Guide member;

[0033] 3. Feeding mechanism; 31. Horizontal conveying trough; 301. First pushing cylinder; 302. Electrode holder; 303. Steering member; 32. Feeding conveying trough; 33. Defective product output trough;

[0034] 4. Detection mechanism; 41. Support column; 42. First connection block; 43. Detection cylinder; 44. Second connection block; 45. Detection sensor; 46. Probe; 47. Guide rod; 48. Press block. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] In the description of the present invention, unless otherwise clearly specified 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 an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present utility model.

[0039] In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more than two. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] like Figure 1-8As shown, the utility model provides a cylindrical battery oblique insertion welding device, which comprises: a base 1; a welding mechanism 2, comprising a support vertical plate 201 and a first guide rail 202, a welding assembly 21 and a driving assembly 22, which are fixedly arranged on the base 1 in an inclined manner; the first guide rail 202 is arranged at the central axis position of the support vertical plate 201, and the welding assembly 21 comprises a first mounting plate 211 slidably mounted on the first guide rail 202 and a welding pin 215 fixedly arranged on the first mounting plate 211; the driving assembly 22 is arranged at the welding assembly 21, used to drive the welding needle 215 to move up and down; the feeding mechanism 3, including a transverse conveying groove 31 and a feeding conveying groove 32 arranged below the welding assembly 21, one end of the transverse conveying groove 31 is provided with a first pushing cylinder 301, and the other end of the transverse conveying groove 31 is installed with a steering member 303; the middle part of the transverse conveying groove 31 is provided with an electrode holder 302 coaxial with the welding needle 215; the feeding conveying groove 32 and the transverse conveying groove 31 are conductively connected; the detection mechanism 4 is arranged above the feeding mechanism 3, and is used to detect whether the center hole of the battery cell is unobstructed.

[0041] The utility model provides a cylindrical battery oblique insertion welding device, which conveys the semi-finished cylindrical lithium battery from the feed conveying trough 32 to the transverse conveying trough 31, and then uses the detection mechanism 4 to detect whether the center hole of the winding core of the semi-finished cylindrical lithium battery is a good product with a through hole. After the detection, if it is a good product, the first pushing cylinder 301 pushes the semi-finished cylindrical lithium battery to the electrode seat 302 position, at this time, the welding needle 215 moves down and inserts into the center hole of the winding core to weld the negative electrode ear, if it is a defective product, the welding needle 215 does not weld it; the semi-finished cylindrical lithium battery is continuously conveyed to the transverse conveying trough 31 through the feed conveying trough 32, and the semi-finished cylindrical lithium battery that has been welded in front is conveyed out from the spiral guide groove of the steering member 303, and the defective products that have not been welded are pushed into the defective product output trough 33 by the second pushing cylinder for collection. The cylindrical battery oblique insertion welding device is configured by tilting the welding mechanism 2 and the feeding mechanism 3. When the semi-finished cylindrical lithium battery is conveyed into the transverse conveying trough 31, the semi-finished cylindrical lithium battery is attached to the baffle on one side of the transverse conveying trough 31 in an inclined posture toward the welding mechanism 2. At the same time, the winding core is tightly attached to the inclined inner wall of the steel shell under the action of its own gravity. At this time, no matter how the winding core shakes, the center hole distance between the steel shell and the winding core remains consistent. Since the welding needle 215 and the winding core are tilted at the same time, the center hole of the welding needle 215 and the winding core are on the same axial line, so that the welding needle 215 can be accurately inserted into the center hole of the winding core to weld its negative electrode ear.

[0042] Specifically, Figure 4 and Figure 5As shown, the welding mechanism 2 is arranged on the machine base in an inclined posture, the first mounting plate 211 is slidably connected to the first guide rail 202 through a slider, the first mounting plate 211 is provided with a second guide rail 212, the second mounting plate 213 is installed on the second guide rail 212, and the second mounting plate 213 is slidably installed on the second guide rail 212; that is to say, the first mounting plate 211 and the second mounting plate 213 can both move up and down relative to the first rail, and at the same time, the second mounting plate 213 can also move up and down relative to the first mounting plate 211 through the second guide rail 212, so the welding needle 215 can realize two-stage up and down movement. A clamping piece 214 for fixing the welding needle 215 is installed at the lower end of the second mounting plate 213. The clamping piece 214 includes a bottom plate fixedly connected to the second mounting plate 213, a cover plate is provided on the bottom plate, the bottom plate and the cover plate are threadedly connected, a circular arc-shaped receiving groove with a diameter smaller than the welding needle 215 is provided on the central axis position between the bottom plate and the cover plate, the welding needle 215 is arranged in the receiving groove, and the welding needle 215 is fixed in the receiving groove by locking the cover plate on the bottom plate, and an insulating pad is also provided between the bottom plate and the second mounting plate 213, the insulating pad can be a rubber pad or an insulating pad made of other materials with good insulating properties, and the provision of the insulating pad ensures that after the welding needle 215 is connected to the electrode, the current will not flow into the fuselage through the welding needle 215 to cause a short circuit.

[0043] Furthermore, the driving assembly 22 includes a first driving cylinder 221 and a second driving cylinder 222. The first driving cylinder 221 is fixedly mounted on the upper end of the supporting plate 201, and its telescopic end is arranged downward, and the telescopic end of the first driving cylinder 221 is fixedly connected to the top of the first mounting plate 211. The first driving cylinder 221 can drive the entire welding assembly 21 to move up and down relative to the supporting plate 201; the second driving cylinder 222 is fixedly mounted on the upper end of the first mounting plate 211, and the telescopic end of the second driving cylinder 222 is connected to the top of the second mounting plate 213. The second driving cylinder 222 is used The second mounting plate 213 is driven to move up and down, thereby driving the welding needle 215 to move up and down; when the welding needle 215 welds the negative electrode tab of the cylindrical battery, first, the first driving cylinder 221 drives the welding assembly 21 to move down and moves the welding needle 215 down to the center hole of the winding core, and the first driving cylinder 221 stops driving. At this time, the second driving cylinder 222 starts to work, and the second driving cylinder 222 continues to drive the welding needle 215 to move down to press the negative electrode tab and the bottom of the steel shell and apply pressure to the set pressure, and then the second driving cylinder 222 stops driving, and the welding needle 215 welds the negative electrode tab.

[0044] In this embodiment, if Figure 5As shown, a discharge sensor 216 is fixedly arranged on the side of the first mounting plate 211. When the welding needle 215 presses the negative electrode tab to the bottom of the steel shell and the pressure reaches the set value, the discharge sensor 216 transmits a signal to the background control module and passes current to the welding needle 215 to perform welding. A fixing bracket for fixing and guiding the wires is also arranged on the left side of the supporting plate 201. The setting of the bracket prevents the wires from being entangled in it when the welding assembly 21 moves up and down.

[0045] Further, such as Figure 4 and Figure 6 As shown, a downward-pressing cylinder 23 is also installed on one side near the lower end of the supporting upright plate 201. The downward-pressing cylinder 23 is fixed to the side of the supporting upright plate 201 through a mounting block, and the downward-pressing cylinder 23 is vertically arranged downward. A guide member 24 is arranged on the first guide rail 202 below the welding assembly 21 so as to be movable up and down. The guide member 24 is provided with an insulating center hole, and a welding needle 215 is inserted in the center hole so as to be movable up and down. The output end of the downward-pressing cylinder 23 is connected to the guide member 24 and can drive the guide member 24 to move up and down. When the welding needle 215 welds the negative electrode ear on the winding core, the downward-pressing cylinder 23 drives the guide member 24 to move up and down. The guide member 24 moves downward, at this time, the bottom of the center hole of the guide member 24 abuts against the steel shell, and the bottom surface of the steel shell is pressed against the electrode holder 302, that is to say, the guide member 24 can not only press the steel shell and the electrode holder 302 to electrically contact and fix them, but also play a guiding role for the welding needle 215; since the welding needle 215 and the electrode holder 302 are respectively connected with positive and negative currents, after the steel shell and the electrode holder 302 are electrically connected at this time, the welding needle 215 moves downward in the second driving cylinder 222 and presses the negative pole ear against the inner bottom of the steel shell, the discharge sensor 216 transmits a signal to the background control module to energize the welding needle 215 and the electrode holder 302 to complete the welding work.

[0046] In this embodiment, if Figure 1 and Figure 7-8As shown, the detection mechanism 4 includes a supporting column 41 arranged at one end of the transverse conveying groove 31 close to the first pushing cylinder 301, a first connecting block 42 is horizontally provided at the upper end of the supporting column 41, a detection cylinder 43 is mounted on the first connecting block 42, the output end of the detection cylinder 43 is downwardly arranged, a second connecting block 44 is connected to the output end of the detection cylinder 43, a probe 46 and a detection sensor 45 are provided on the second connecting block 44, and the probe 46 can be inserted into the second connecting block 44 so as to move up and down relative to the second connecting block 44. Two guide rods 47 are movably provided on the first connection block 42, and the two guide rods 47 are respectively located on the left and right sides of the detection cylinder 43, one end of one of the guide rods 47 is fixedly provided on the second connection block 44, and one end of the other guide rod 47 passes through the second connection block 44 and extends to the bottom of the second connection block 44, and a pressure block 48 is installed on the end of the guide rod 47 extending to the bottom of the second connection block 44; the pressure block 48 can fix its steel shell, and the detection cylinder 43 drives the second connection block 44 to move up and down, and at the same time, the pressure block 48 and the probe 46 will also move up and down with the second connection block 44. When the pressing block 48 moves down and abuts against the upper edge of the steel shell, the probe 46 is also inserted into the center hole of the winding core. When the center hole of the winding core is unobstructed, the probe 46 will be inserted smoothly. When there is deformation or obstruction in the center hole of the winding core, the probe 46 will be blocked and cannot continue to probe down. At this time, the probe 46 will automatically rise, and the detection sensor 45 will transmit the signal to the background control module and record that the semi-finished cylindrical battery is a defective product. After the detection, the first pushing cylinder 301 will push the semi-finished cylindrical battery toward the direction of the steering member 303, and the welding mechanism 2 will not weld it.

[0047] Specifically, Figures 1 to 3 As shown, one end of the transverse conveying groove 31 close to the steering member 303 is provided with a defective product output groove 33 which is conductively connected to the transverse conveying groove 31, and a second pushing cylinder is provided opposite to the defective product output groove 33, and a "U"-shaped push rod is connected to the output end of the second pushing cylinder. When the defective semi-finished cylindrical battery is transported to the position between the defective product output groove 33 and the push rod, the second pushing cylinder drives the push rod to push the defective semi-finished cylindrical battery into the defective product output groove 33 and transport it out.

[0048] Furthermore, the transverse conveying trough 31 and the welding mechanism 2 are arranged at an angle together, and the baffle of the transverse conveying trough 31 close to the welding mechanism 2 is made of magnetic material, such as a magnet structure, and a sensor is provided on the baffle. The sensor is arranged at a position opposite to the connection port of the feed conveying trough 32 and the transverse conveying trough 31. The sensor is used to sense whether the semi-finished cylindrical battery has been conveyed to the transverse conveying trough 31, so as to cooperate with the detection mechanism 4 to detect it. When the semi-finished cylindrical battery is conveyed to the transverse conveying trough 31, the steel shell is adsorbed on the baffle close to the welding mechanism 2 in an inclined posture under the action of the magnetic attraction of the baffle of the transverse conveying trough 31. At this time, no matter how the winding core shakes, the center hole distance between the steel shell and the winding core remains consistent. Since the welding needle 215 and the winding core are tilted at the same time, the center hole of the welding needle 215 and the winding core are on the same axial line, so that the welding needle 215 can be accurately inserted into the center hole of the winding core to weld its negative electrode ear.

[0049] In this embodiment, if Figure 3 As shown, a spiral guide groove is provided on the outer diameter of the steering member 303, and the guide groove is conductively connected to the transverse feed trough. The width of the guide groove is greater than the diameter of the steel shell. Since the transverse feed trough 31 is inclined, the welded semi-finished cylindrical batteries are also in an inclined posture when they are conveyed out. At this time, a spiral guide groove is provided on the outer diameter of the steering member 303 to change the posture of the semi-finished cylindrical batteries when they are discharged, so that the semi-finished cylindrical batteries can finally be conveyed out vertically in sequence, which is convenient for subsequent processing or collection.

[0050] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A cylindrical battery oblique insertion welding device, characterized in that: Includes: base; The welding mechanism comprises a support vertical plate and a first guide rail fixedly arranged on the base in an inclined manner, a welding assembly and a driving assembly; the first guide rail is arranged at the central axis position of the support vertical plate, the welding assembly comprises a first mounting plate slidably mounted on the first guide rail and a welding pin fixedly arranged on the first mounting plate; the driving assembly is arranged above the welding assembly and is used to drive the welding pin to move up and down; The feeding mechanism comprises a transverse conveying trough and a feed conveying trough provided below the welding assembly, wherein a first pushing cylinder is provided at one end of the transverse conveying trough, and a steering member is installed at the other end of the transverse conveying trough; an electrode holder coaxial with the welding needle is installed in the middle of the transverse conveying trough; the feed conveying trough and the transverse conveying trough are conductively connected; The detection mechanism is arranged above the feeding mechanism and is used to detect whether the central hole of the battery cell is unobstructed.

2. A cylindrical battery oblique insertion welding device according to claim 1, characterized in that: The welding assembly also includes a second guide rail, a second mounting plate and a clamping member for mounting the welding needle, the second guide rail is longitudinally mounted on the first mounting plate, the second mounting plate is slidably mounted on the second guide rail, the clamping member is fixed to the lower end of the second mounting plate, and an insulating pad is provided between the clamping member and the second mounting plate.

3. A cylindrical battery oblique insertion welding device according to claim 2, characterized in that: The driving assembly includes a first driving cylinder and a second driving cylinder. The first driving cylinder is installed at the upper end of the supporting plate, and the telescopic end of the first driving cylinder is connected to the top of the first mounting plate; the second driving cylinder is installed at the upper end of the first mounting plate, and the telescopic end of the second driving cylinder is connected to the top of the second mounting plate.

4. A cylindrical battery oblique insertion welding device according to claim 1, characterized in that: A downward-pressing cylinder is installed on the supporting vertical plate, and a guide member which can move up and down is also provided on the first guide rail. The telescopic end of the downward-pressing cylinder is connected to the guide member, and the welding needle is arranged to pass through the center hole of the guide member.

5. A cylindrical battery oblique insertion welding device according to claim 1, characterized in that: A discharge sensor is installed on the side of the first mounting plate.

6. A cylindrical battery oblique insertion welding device according to claim 1, characterized in that: The detection mechanism includes a supporting column arranged at one end of the transverse conveying trough close to the first pushing cylinder, a first connecting block is laterally provided at the upper end of the supporting column, a detection cylinder is mounted on the first connecting block, a second connecting block is connected to the output end of the detection cylinder, a probe and a detection sensor are provided on the second connecting block, and the probe can move up and down relative to the second connecting block.

7. A cylindrical battery oblique insertion welding device according to claim 6, characterized in that: Two guide rods are movably provided on the first connecting block, and the two guide rods are located on both sides of the detection cylinder. One end of one of the guide rods is fixed to the second connecting block, and one end of the other guide rod passes through the second connecting block and extends to the bottom of the second connecting block. A pressure block is installed at the end of the guide rod extending to the bottom of the second connecting block.

8. A cylindrical battery oblique insertion welding device according to claim 7, characterized in that: A defective product output trough which is conductively connected to the transverse conveying trough is provided at one end of the transverse conveying trough close to the steering member, and a second pushing cylinder is provided at a position opposite to the defective product output trough.

9. A cylindrical battery oblique insertion welding device according to any one of claims 1 to 8, characterized in that: The baffle plate on the side of the transverse conveying trough close to the welding mechanism is made of magnetic material.

10. A cylindrical battery oblique insertion welding device according to claim 1, characterized in that: A spiral guide groove is provided on the outer diameter of the steering member, and the guide groove is conductively connected with the transverse feed groove. The guide groove is used to change the posture of the cylindrical battery after welding when it is discharged.

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