Conveying device and welding equipment

Abstract

The utility model provides a conveying device and welding equipment, the conveying device is provided with a feeding station and a processing station, the conveying device comprises a positioning mechanism, a conveying mechanism, a driving mechanism and a driving mechanism, the positioning mechanism defines an accommodating space suitable for accommodating workpieces, and the positioning mechanism is provided with a movable driving part; the conveying mechanism is used for conveying the positioning mechanism to the machining station from the feeding station; and the driving mechanism is arranged on the feeding station, and the driving mechanism is used for driving the driving part so that the positioning mechanism can position or release positioning of the workpieces in the containing space. According to the conveying device, the driving mechanism and the positioning mechanism are arranged separately, the structure of the conveying device is simplified, assembly line positioning and conveying of workpieces are achieved, and production efficiency is improved. In addition, the positioning mechanism is driven by a single power source to automatically center the workpiece in at least two directions at the same time, the positioning precision can be improved, and therefore the machining precision and the product yield are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of production equipment, and more specifically, to a conveying device and welding equipment. Background Art

[0002] In the related art, the battery production process requires positioning the battery cell first and then processing the battery cell. For example, in the collector plate welding process, the positioning accuracy between the collector plate and the battery cell will greatly affect the welding quality, thereby affecting the battery yield.

[0003] In the prior art, when welding cylindrical battery cells, a V-block pneumatic positioning mechanism is usually used to position the battery cells, or a two-jaw clamp is used to clamp and position the battery cells. The positioning accuracy is low, it is difficult to ensure the concentricity of the battery cells and the collector plate, and it is not conducive to high-speed assembly line production. Utility Model Content

[0004] One purpose of the utility model is to provide a new technical solution for a conveying device, which can at least solve the problem of low positioning accuracy and difficulty in achieving high-speed conveying of the conveying device in the prior art.

[0005] Another object of the utility model is to provide a welding device, comprising the above-mentioned conveying device.

[0006] According to a first aspect of the utility model, a conveying device is provided, which has a loading station and a processing station, and the conveying device includes: a positioning mechanism, which defines a storage space suitable for accommodating a workpiece, and the positioning mechanism has a movable driving part; a conveying mechanism, which is used to transport the positioning mechanism from the loading station to the processing station; and a driving mechanism, which is at least arranged at the loading station, and is used to drive the driving part so that the positioning mechanism can position or release the workpiece in the storage space.

[0007] Optionally, the driving portion protrudes from the surface of the positioning mechanism.

[0008] Optionally, the driving portion is movable along a first direction, and the driving mechanism includes: a first push rod, which is in contact with the driving portion; and a first driving member, which is connected to the first push rod and is used to drive the first push rod to push the driving portion along the first direction to release the positioning mechanism.

[0009] Optionally, at the loading station, the plurality of positioning mechanisms on the conveying mechanism are arranged along the second direction, the number of the driving mechanisms is multiple, the plurality of driving mechanisms are arranged along the second direction, and the first direction is perpendicular to the second direction.

[0010] Optionally, the accommodating space passes through the positioning mechanism along the width direction of the conveying mechanism, and the first direction, the second direction and the width direction of the conveying mechanism are perpendicular to each other.

[0011] Optionally, the conveying device also includes: a loading support, which is arranged at the loading station and located on one side of the conveying mechanism, and the loading support is used to carry the workpiece; a loading mechanism, which is arranged at the loading station and located on a side of the loading support away from the conveying mechanism, and the loading mechanism is used to push the workpiece on the loading support into the accommodating space.

[0012] Optionally, the loading mechanism includes: a second push rod, which extends along the width direction of the conveying mechanism, and the end of the second push rod close to the accommodating space is used to push the workpiece; a second driving member, which is connected to the end of the second push rod away from the accommodating space to drive the second push rod to move along the width direction of the conveying mechanism.

[0013] Optionally, the conveying device also has a material unloading station, which is located downstream of the processing station. The material unloading station is provided with the driving mechanism and also includes: a material unloading support, which is located at the material unloading station and on one side of the conveying mechanism; a material unloading mechanism, which is located at the material unloading station and on the other side of the conveying mechanism, and the material unloading mechanism is used to push the workpiece in the accommodating space toward the material unloading support.

[0014] Optionally, the unloading mechanism includes: a third push rod, which extends along the width direction of the conveying mechanism, and the third push rod is used to push the workpiece toward one end of the accommodating space; and a third driving member, which is connected to the other end of the third push rod to drive the third push rod to move along the width direction of the conveying mechanism.

[0015] Optionally, the conveying mechanism includes: a conveyor line, which passes through the loading station and the processing station and is used to convey the positioning mechanism from the loading station to the processing station; a plurality of carriers, which are arranged on the conveyor line, and the carriers are connected to the positioning mechanism, and the conveyor line is used to convey the carriers from the loading station to the processing station.

[0016] Optionally, the conveyor line is ring-shaped and is used to reciprocate the positioning mechanism between the loading station and the processing station.

[0017] Optionally, the conveyor line is a magnetic levitation conveyor line or a belt conveyor line.

[0018] Optionally, it also includes: a limiting mechanism, which is arranged at the loading station and is used to limit the carrier in the width direction of the conveying mechanism.

[0019] Optionally, the carrier has limiting surfaces at both ends in the width direction of the conveying mechanism, and the limiting mechanism includes: two brackets, the two brackets are arranged at the loading station, and the carrier is located between the two brackets; a plurality of rollers, the plurality of rollers are arranged on the two brackets along the extension direction of the conveying line, and each limiting surface is connected to at least one roller to limit the carrier.

[0020] According to a second aspect of the utility model, a welding device is provided, comprising: a conveying device, which is the conveying device described in any one of the above embodiments; and a welding device, which is arranged at the processing station and is used to weld the workpiece in the positioning mechanism.

[0021] Optionally, the welding device includes: two suction head assemblies, which are spaced apart on both sides of the conveying mechanism along the width direction of the conveying mechanism, and the suction head assemblies are used to adsorb the workpieces to be welded; two fourth driving members, which are connected to the two suction head assemblies in a one-to-one correspondence, and each of the fourth driving members is used to drive the corresponding suction head assembly to move along the width direction of the conveying mechanism.

[0022] Optionally, the suction head assembly includes: a mounting block, which is connected to the fourth driving member; a pressure head, which is arranged on the mounting block and is used to absorb the workpiece to be welded and press the workpiece to be welded against the end of the workpiece.

[0023] Optionally, the welding device further includes: two laser assemblies, the two laser assemblies are spaced apart on both sides of the conveying mechanism along the width direction of the conveying mechanism, the two suction head assemblies are located between the two laser assemblies, and the laser assemblies are used to weld the workpiece to be welded and the workpiece.

[0024] Optionally, the welding device further includes: a buffer assembly, which is connected between the suction head assembly and the fourth driving member and is used to buffer the suction head assembly; and a pressure sensor, which is connected between the buffer assembly and the suction head assembly and is used to detect the pressure applied to the suction head assembly.

[0025] According to the conveying device of the utility model, the driving mechanism and the positioning mechanism are separately arranged, and the positioning mechanism is transported between various stations by the conveying mechanism. At the same time, the driving mechanism is fixedly arranged at the loading station, which is conducive to simplifying the structure of the conveying device, realizing the assembly line positioning and conveying of the workpiece, and improving production efficiency. In addition, the driving mechanism cooperates with the driving part exposed on the positioning mechanism to change the state of the positioning mechanism to position and release the workpiece, so that the positioning mechanism is driven by a single power source and automatically adjusts the center in at least two directions of the workpiece at the same time, realizing concentric positioning of the workpiece, and preventing the workpiece from being offset in one direction due to the problem of contact in sequence during positioning, which is conducive to improving the positioning accuracy, thereby improving the processing accuracy and the yield of the product.

[0026] 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

[0027] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0028] Figure 1 is a top view of a conveying device according to an embodiment of the utility model;

[0029] Figure 2 It is a three-dimensional diagram of a partial structure of a conveying device at a loading station according to an embodiment of the utility model;

[0030] Figure 3 yes Figure 2 a side view of the structure shown;

[0031] Figure 4 yes Figure 3 An enlarged view of the circled portion at A in the middle;

[0032] Figure 5 It is a three-dimensional diagram of a partial structure of a conveying device at a material unloading station according to an embodiment of the utility model;

[0033] Figure 6 yes Figure 5 a side view of the structure shown;

[0034] Figure 7 It is a front view of a positioning mechanism in a conveying device according to an embodiment of the utility model;

[0035] Figure 8 is a cross-sectional view of a positioning mechanism in a conveying device according to an embodiment of the utility model when the positioning assembly is in a first state;

[0036] Fig. 9 It is a three-dimensional diagram of a toggle member, a transmission rod and a second elastic member in a conveying device according to an embodiment of the utility model when the positioning assembly is in a first state;

[0037] Fig.10 is a cross-sectional view of a toggle member, a transmission rod and a second elastic member in a conveying device according to an embodiment of the utility model when the positioning assembly is in a first state;

[0038] Fig.11 is a cross-sectional view of a positioning mechanism in a conveying device according to an embodiment of the utility model when the positioning assembly is in a second state;

[0039] Fig.12 It is a three-dimensional diagram of a toggle member, a transmission rod and a second elastic member in a conveying device according to an embodiment of the utility model when the positioning assembly is in a second state;

[0040] Fig.13 is a cross-sectional view of a toggle member, a transmission rod and a second elastic member in a conveying device according to an embodiment of the utility model when the positioning assembly is in a second state;

[0041] Fig.14 is a three-dimensional diagram of a welding device according to an embodiment of the utility model in a standby position;

[0042] Fig.15 is a three-dimensional diagram of a welding device according to an embodiment of the utility model in a welding position;

[0043] Fig.16 It is a side view of a welding device according to an embodiment of the utility model when it is in a welding position.

[0044] Reference numerals

[0045] Conveying device 100; loading station a; processing station b; unloading station c;

[0046] Positioning mechanism 10;

[0047] Mounting seat 11;

[0048] Front cover plate 111; rear cover plate 112; side cover plate 113; accommodation space 114; installation space 115; guide channel 116; bushing 117;

[0049] Positioning assembly 12; centering block 121; first arc surface 1211; second arc surface 1212; stop pin 122; connecting seat 123; centering wheel 124;

[0050] Transmission assembly 13; transmission wheel 131; first guide surface 1311; step 1312; first tooth portion 1313; protrusion 1314; groove 1315; toggle member 132; rack 1321; guide block 1322; second tooth portion 1323; first driving column 1324; second driving column 1325; transmission rod 133; driving portion 1331; second guide surface 1332; first elastic member 14; second elastic member 15;

[0051] Conveying mechanism 20; conveying line 21; carrying platform 22;

[0052] Driving mechanism 30; first push rod 31; first driving member 32;

[0053] A loading support 40;

[0054] Feeding mechanism 50; second push rod 51; second driving member 52;

[0055] A material unloading support member 60; a material unloading mechanism 70; a third push rod 71; a third driving member 72;

[0056] Limiting mechanism 80; bracket 81; roller 82;

[0057] Welding device 200; suction head assembly 201; mounting block 2011; pressure head 2012; fourth driving member 202; laser assembly 203; buffer assembly 204; pressure sensor 205; mounting plate 206;

[0058] Workpiece 300. DETAILED DESCRIPTION

[0059] 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.

[0060] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0061] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0062] 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.

[0063] 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.

[0064] The following first describes in detail the conveying device 100 according to an embodiment of the present utility model in conjunction with the drawings.

[0065] like Figures 1 to 13 As shown, the conveying device 100 according to the embodiment of the utility model has a loading station a and a processing station b, and the conveying device 100 includes: a positioning mechanism 10, a conveying mechanism 20 and a driving mechanism 30.

[0066] Specifically, the positioning mechanism 10 defines an accommodating space 114 suitable for accommodating the workpiece 300, and the positioning mechanism 10 has a movable driving portion 1331. The conveying mechanism 20 is used to transport the positioning mechanism 10 from the loading station a to the processing station b. The driving mechanism 30 is at least provided at the loading station a, and the driving mechanism 30 is used to drive the driving portion 1331 so that the positioning mechanism 10 positions or releases the workpiece 300 in the accommodating space 114.

[0067] In other words, the conveying device 100 according to the embodiment of the utility model is mainly composed of a positioning mechanism 10, a conveying mechanism 20 and a driving mechanism 30. The workpiece 300 to be processed can be loaded onto the conveying device 100 and transported to the processing station b for processing by the conveying device 100. The shape of the workpiece 300 may include but is not limited to a cylindrical shape, an elliptical cylindrical shape, and a polygonal cylindrical shape.

[0068] Specifically, the positioning mechanism 10 can position the workpiece 300, and the workpiece 300 can be transported on the transport mechanism 20 through the positioning mechanism 10. The positioning mechanism 10 can be provided with an accommodation space 114, and the workpiece 300 can be installed in the accommodation space 114 and positioned by the movable structure in the positioning mechanism 10.

[0069] The positioning mechanism 10 may have a driving part 1331, and a driving mechanism 30 may be provided at the loading station a. When the positioning mechanism 10 is transported to the loading station a, the driving mechanism 30 may drive the driving part 1331 to switch the positioning mechanism 10 between the first state and the second state.

[0070] When the positioning mechanism 10 is in the first state, the positioning mechanism 10 can position and clamp the workpiece 300. When the positioning mechanism 10 is in the second state, the positioning mechanism 10 can release the positioning of the workpiece 300, that is, the positioning mechanism 10 can release the workpiece 300.

[0071] That is to say, the driving mechanism 30 can be used as an external power source for the positioning mechanism 10, and the driving part 1331 can be used as the input end of the positioning mechanism 10 for power input. Therefore, the driving mechanism 30 can be fixedly set at the loading station a, and the positioning mechanism 10 used for positioning can be transported between the various stations following the conveying mechanism 20. On the one hand, the workpiece 300 can be quickly positioned, and on the other hand, it is helpful to simplify the structure of the conveying device 100.

[0072] It should be noted that the driving of the driving mechanism 30 on the driving part 1331 may include but is not limited to linear driving and curved driving, which is not limited here. That is to say, under the drive of the driving mechanism 30, the driving part 1331 can perform linear motion, rotational motion, and irregular motion, as long as the driving part 1331 can drive the movable structure in the positioning mechanism 10 to move, so as to realize the positioning and release of the workpiece 300.

[0073] In addition, the structure of the positioning mechanism 10 is not limited in this embodiment, as long as it can achieve the positioning and release of the workpiece 300 under the drive of the driving part 1331.

[0074] Therefore, according to the conveying device 100 of the utility model, the driving mechanism 30 and the positioning mechanism 10 are separately arranged, and the positioning mechanism 10 is transported between each station by the conveying mechanism 20, and the driving mechanism 30 is fixedly arranged at the loading station a, which is conducive to simplifying the structure of the conveying device 100, realizing the assembly line positioning and transportation of the workpiece 300, and improving production efficiency. In addition, the driving mechanism 30 cooperates with the driving part 1331 exposed on the positioning mechanism 10 to change the state of the positioning mechanism 10 to position and release the workpiece 300, so that the positioning mechanism 10 is driven by a single power source and automatically aligns the workpiece 300 in at least two directions at the same time, realizing concentric positioning of the workpiece 300, and preventing the workpiece 300 from unidirectional deviation due to the problem of contact in sequence during positioning, which is conducive to improving positioning accuracy, thereby improving processing accuracy and product yield.

[0075] Optionally, the workpiece 300 can be a battery cell for manufacturing cylindrical batteries. The positioning mechanism 10 can concentrically position the battery cell without a current collector plate, and then weld the current collector plate to the end of the battery cell through the welding device 200 at the processing station b to improve the concentricity of the current collector plate and the battery cell, thereby improving the welding quality and the yield rate of battery production.

[0076] According to an embodiment of the present invention, the driving portion 1331 protrudes from the surface of the positioning mechanism 10 , so that the driving mechanism 30 can drive the driving portion 1331 more conveniently.

[0077] Specifically, since the driving part 1331 protrudes from the surface of the positioning mechanism 10, the size of the end of the driving mechanism 30 that contacts the driving part 1331 can be designed to be larger than the size of the driving part 1331, so that when the positioning mechanism 10 is positionally shifted in the conveying direction, the driving mechanism 30 can still stably drive the driving part 1331.

[0078] In some other embodiments, the driving portion 1331 may be accommodated in the positioning mechanism 10 , and a portion of the driving mechanism 30 may extend into the positioning mechanism 10 to drive the driving portion 1331 .

[0079] According to an embodiment of the utility model, the driving portion 1331 is movable along a first direction, and the driving mechanism 30 includes a first push rod 31 and a first driving member 32. The first push rod 31 abuts against the driving portion 1331. The first driving member 32 is connected to the first push rod 31, and is used to drive the first push rod 31 to push the driving portion 1331 along the first direction.

[0080] Specifically, the driving part 1331 can perform linear motion along the first direction, and the driving member can be mainly composed of a push rod and a first driving member 32. The first driving member 32 can be connected to the first push rod 31 and drive the first push rod 31 to move along the first direction. The first driving member 32 can include but is not limited to a cylinder and a hydraulic cylinder.

[0081] During the loading process, the positioning mechanism 10 can be in the first state in the initial state. The first driving member 32 drives the first push rod 31, so that the first push rod 31 pushes the driving part 1331 along the first direction, and the positioning mechanism 10 can be switched from the first state to the second state, so that the positioning mechanism 10 is opened, and the workpiece 300 can enter the accommodating space 114 conveniently.

[0082] After the workpiece 300 enters the accommodating space 114, the first driving member 32 can drive the first push rod 31 away from the driving portion 1331, and a reset structure can be provided inside the positioning mechanism 10, and the reset structure can make the positioning mechanism 10 have a tendency to switch from the second state to the first state. Therefore, when the driving force of the first driving member 32 is withdrawn, that is, when the driving portion 1331 is not subjected to an external force, the reset mechanism can make the positioning mechanism 10 return to the first state, thereby achieving the positioning of the workpiece 300.

[0083] In some specific embodiments of the utility model, at the loading station a, the multiple positioning mechanisms 10 on the conveying mechanism 20 are arranged along the second direction, the number of driving mechanisms 30 is multiple, and the multiple driving mechanisms 30 are arranged along the second direction, and the second direction is respectively perpendicular to the first direction and the axial direction of the accommodating space 114.

[0084] Therefore, a plurality of driving mechanisms 30 can be arranged corresponding to a plurality of positioning mechanisms 10 on the conveying mechanism 20 to realize the loading and positioning of the workpieces 300 in batches, which is beneficial to improving the conveying efficiency and the positioning efficiency.

[0085] According to some other embodiments of the present invention, the accommodating space 114 penetrates the positioning mechanism 10 along the width direction of the conveying mechanism 20 , and the first direction and the second direction are perpendicular to the width direction of the conveying mechanism 20 .

[0086] For ease of explanation, the conveying direction of the conveying mechanism 20 conveying the positioning mechanism 10 at the loading station a can be defined as the second direction, the width direction of the conveying mechanism 20 can be defined as the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0087] like Figure 2 and Figure 3 As shown, the linear motion direction of the driving part 1331 may be perpendicular to the extension direction of the accommodating space 114, that is, the first direction is perpendicular to the third direction. The width direction of the conveying mechanism 20 may coincide with the third direction.

[0088] In this embodiment, the driving mechanism 30 can drive the driving part 1331 from the end of the positioning mechanism 10 away from the conveying mechanism 20, which facilitates the flexible arrangement of the driving mechanism 30 at the loading station a.

[0089] When the third direction is a horizontal direction, the first direction may be a vertical direction, and the driving mechanism 30 may be mounted above the positioning mechanism 10 via a mounting frame.

[0090] According to some optional embodiments of the present utility model, the conveying device 100 further includes a loading support 40 and a loading mechanism 50. The loading support 40 is disposed at the loading station a and located on one side of the conveying mechanism 20, and the loading support 40 is used to carry the workpiece 300. The loading mechanism 50 is disposed at the loading station a and located on the side of the loading support 40 away from the conveying mechanism 20, and the loading mechanism 50 is used to push the workpiece 300 on the loading support 40 into the accommodating space 114.

[0091] Specifically, the loading station a may also be provided with a loading support 40 and a loading mechanism 50 , and the loading support 40 and the loading mechanism 50 may be located on the same side of the conveying mechanism 20 .

[0092] The loading support 40 can be located on one side of the loading mechanism 50 close to the conveying mechanism 20, and the loading support 40 can support the workpiece 300. During loading, the manipulator can grab the workpiece 300 and transport it to the loading support 40, and then the loading mechanism 50 pushes the column on the loading support 40 into the accommodating space 114.

[0093] Optionally, the upper surface of the loading support 40 may have an arc surface adapted to the workpiece 300. For example, when the workpiece 300 is a cylindrical battery cell, the arc surface on the loading support 40 may be in an arc shape, and the workpiece 300 may be initially positioned by using the arc surface so that the workpiece 300 is aligned with the accommodating space 114 on the positioning mechanism 10.

[0094] In this embodiment, the loading support 40 is first used to carry the workpiece 300 and preliminarily position the workpiece 300, and then the loading mechanism 50 is used to push the workpiece 300 from one side of the conveying mechanism 20 into the accommodating space 114 of the positioning mechanism 10. The positioning mechanism 10 concentrically positions the workpiece 300, which is beneficial to improve the positioning accuracy, improve the loading efficiency, and avoid material jamming.

[0095] According to some other embodiments of the present invention, the feeding mechanism 50 includes: a second push rod 51 and a second driving member 52. The second push rod 51 extends along the width direction of the conveying mechanism 20, and one end of the second push rod 51 close to the accommodating space 114 is used to push the workpiece 300. The second driving member 52 is connected to one end of the second push rod 51 away from the accommodating space 114 to drive the second push rod 51 to move along the width direction of the conveying mechanism 20.

[0096] In other words, the feeding mechanism 50 of the present embodiment is mainly composed of a second push rod 51 and a second driving member 52. The second push rod 51 can extend along the first direction, one end of the second push rod 51 can be connected to the second driving member 52, and the other end of the second push rod 51 can be used to push the workpiece 300. The second driving member 52 can include but is not limited to a cylinder and a hydraulic cylinder. The feeding mechanism 50 composed of the second push rod 51 and the second driving member 52 has the advantages of simple structure, low cost and high reliability.

[0097] In some specific embodiments of the present invention, the conveying device 100 further has a material unloading station c, which is arranged downstream of the processing station b, and the material unloading station c is provided with a driving mechanism 30. The conveying device 100 further includes a material unloading support 60 and a material unloading mechanism 70. The material unloading support 60 is arranged at the material unloading station c and is located on one side of the conveying mechanism 20. The material unloading mechanism 70 is arranged at the material unloading station c and is located on the other side of the conveying mechanism 20, and the material unloading mechanism 70 is used to push the workpiece 300 in the accommodating space 114 toward the material unloading support 60.

[0098] Specifically, the conveying device 100 has a loading station a, a processing station b and a unloading station c arranged in sequence along its own conveying direction. The positioning mechanism 10 can receive the workpiece 300 at the loading station a and position the workpiece 300. The positioning mechanism 10 can maintain the positioning of the workpiece 300 at the processing station b, and the workpiece 300 can complete the corresponding processing. The positioning mechanism 10 can release the positioning of the workpiece 300 at the unloading station c to facilitate the unloading of the workpiece 300.

[0099] The unloading station c may be provided with a driving mechanism 30. When the positioning mechanism 10 is transported to the unloading station c, the driving mechanism 30 of the unloading station c may drive the driving part 1331 so that the positioning mechanism 10 releases the limit of the workpiece 300, thereby allowing the workpiece 300 to be separated from the accommodating space 114, and the unloading of the workpiece 300 is completed.

[0100] The unloading station c may also be provided with an unloading support 60 and an unloading mechanism 70. The unloading mechanism 70 and the unloading support 60 may be arranged on both sides of the conveying mechanism 20, that is, the conveying mechanism 20 is located between the unloading mechanism 70 and the unloading support 60. The unloading support 60 may have the same structure as the loading support 40.

[0101] The unloading mechanism 70 can push the workpiece 300 from one side of the conveying mechanism 20 to the other side of the conveying mechanism 20 so that the workpiece 300 moves to the unloading support 60, and then the robot grabs the workpiece 300 on the unloading support 60 for unloading.

[0102] According to some optional embodiments of the present invention, the unloading mechanism 70 includes a third push rod 71 and a third driving member 72. The third push rod 71 extends along the width direction of the conveying mechanism 20, and one end of the third push rod 71 facing the accommodating space 114 is used to push the workpiece 300. The third driving member 72 is connected to the other end of the third push rod 71 to drive the third push rod 71 to move along the width direction of the conveying mechanism 20.

[0103] That is to say, the unloading mechanism 70 of the present embodiment is mainly composed of a third push rod 71 and a third driving member 72. The third push rod 71 can extend along the third direction, one end of the third push rod 71 can be connected to the third driving member 72, and the other end of the third push rod 71 is used to push the workpiece 300. The third driving member 72 can include but is not limited to a cylinder and a hydraulic cylinder. The unloading mechanism 70 composed of the third push rod 71 and the third driving member 72 has the advantages of simple structure, low cost and high reliability.

[0104] Optionally, the unloading mechanism 70 and the loading mechanism 50 may have the same structure to reduce the types of parts in the conveying device 100 , which is helpful to simplify the conveying device 100 .

[0105] According to some other embodiments of the utility model, the conveying mechanism 20 includes a conveying line 21 and a plurality of carriers 22. The conveying line 21 passes through the loading station a and the processing station b, and is used to convey the positioning mechanism 10 from the loading station a to the processing station b. A plurality of carriers 22 are arranged on the conveying line 21, and the carriers 22 are connected to the positioning mechanism 10, and the conveying line 21 is used to convey the carriers 22 from the loading station a to the processing station b.

[0106] Specifically, the conveying mechanism 20 is mainly composed of a conveying line 21 and a plurality of carriers 22. The plurality of carriers 22 can be connected to the conveying line 21 and sequentially pass through the loading station a, the processing station b and the unloading station c under the conveyance of the conveying line 21. A positioning mechanism 10 can be connected to each carrier 22. Optionally, the positioning mechanism 10 is detachably connected to the carrier 22.

[0107] In this embodiment, the positioning mechanism 10 is installed using the carrier 22 on the conveyor line 21, so that multiple positioning mechanisms 10 can be separated to avoid interference. In addition, the positioning mechanism 10 and the carrier 22 are two independent structures, which can be disassembled and assembled, thereby facilitating the disassembly and assembly of the positioning mechanism 10 for maintenance. When a positioning mechanism 10 in the conveying device 100 fails, the spare positioning mechanism 10 can be installed on the carrier 22, so that the conveying device 100 continues to operate, and the failed positioning mechanism 10 can be removed for maintenance, thereby avoiding shutdown for maintenance and affecting production efficiency.

[0108] In some specific embodiments of the present invention, the conveyor line 21 is ring-shaped, and the conveyor line 21 is used to reciprocate the positioning mechanism 10 between the loading station a and the processing station b.

[0109] Specifically, the conveyor line 21 may include an upper conveyor belt, a lower conveyor belt and two arc conveyor belts. The upper conveyor belt may be located above the lower conveyor belt, and the upper conveyor belt and the lower conveyor belt may be located between the two arc conveyor belts. Each arc conveyor belt may be semicircular, and each arc conveyor belt may be respectively connected to the upper conveyor belt and the lower conveyor belt, thereby forming a ring-shaped conveyor line 21.

[0110] The upper conveyor belt can sequentially pass through the loading station a, the processing station b and the unloading station c. The positioning mechanism 10 can be located above the upper conveyor belt when being transported on the upper conveyor belt. The upper conveyor belt can sequentially transport the positioning mechanism 10 to the loading station a, the processing station b and the unloading station c, and then an arc conveyor belt transports the positioning mechanism 10 to the lower conveyor belt, and then another arc conveyor belt transports the positioning mechanism 10 back to the loading station a, thereby realizing the reciprocating transport of the positioning mechanism 10 between the loading station a, the processing station b and the unloading station c, realizing the automatic recovery of the positioning mechanism 10, which is beneficial to improving the conveying efficiency.

[0111] According to some optional embodiments of the utility model, the conveyor line 21 is a magnetic suspension conveyor line 21 or a belt conveyor line 21. The magnetic suspension conveyor line 21 has the advantages of high efficiency, reliability, safety, and flexible design. The belt conveyor line 21 has the advantages of high efficiency, good applicability, high safety, and low energy consumption. Both can realize the conveyance of the positioning mechanism 10. The conveyor line 21 can also adopt other conveying methods, as long as it can enable the positioning mechanism 10 to be conveyed from the loading station a to the unloading station c.

[0112] According to some other embodiments of the utility model, the conveying device 100 also includes a limiting mechanism 80, which is arranged at the loading station a and is used to limit the carrier 22 in the width direction of the conveying mechanism 20. Thereby, the carrier 22 and the positioning mechanism 10 on the carrier 22 can be prevented from shaking in the third direction, making it convenient for the workpiece 300 to enter the accommodating space 114 of the positioning mechanism 10.

[0113] In some specific embodiments of the present invention, the carrier 22 has limiting surfaces at both ends in the width direction of the conveying mechanism 20, and the limiting mechanism 80 includes two brackets 81 and a plurality of rollers 82. The two brackets 81 are arranged at the loading station a, and the carrier 22 is located between the two brackets 81. The plurality of rollers 82 are arranged on the two brackets 81 along the extension direction of the conveying line 21, and each limiting surface is connected to at least one roller 82 to limit the carrier 22.

[0114] like Figure 4 As shown, brackets 81 may be provided on both sides of the conveyor line 21, and each bracket 81 may be provided with a plurality of rollers 82, and the plurality of rollers 82 on each bracket 81 may be arranged along the second direction. The carrier 22 may have two limiting surfaces in the second direction, and the two limiting surfaces may be respectively connected to the rollers 82 on the corresponding sides in a rolling manner. When the carrier 22 is transported on the conveyor line 21, the rollers 82 may abut against the limiting surfaces and roll relative to the limiting surfaces. The rollers 82 on both sides of the conveyor line 21 may limit the carrier 22 in the third direction, prevent the positioning mechanism 10 from shaking in the third direction, and facilitate the workpiece 300 to enter the accommodating space 114 of the positioning mechanism 10.

[0115] In addition, the structure of the roller 82 cooperating with the limiting surface not only realizes the limiting function, but also helps to reduce the friction between the two, thereby preventing the limiting function from affecting the normal conveying of the conveying mechanism 20.

[0116] According to some optional embodiments of the present invention, the limiting surface is inclined relative to the horizontal plane. Figure 4As shown, in the direction from top to bottom, the two limiting surfaces can be inclined toward each other, and in order for the rollers 82 on both sides to abut against the limiting surfaces, the axes of the rollers 82 can be inclined relative to the horizontal direction and the vertical direction respectively.

[0117] According to some specific embodiments, the mounting seat 11 is defined with a receiving space 114 suitable for accommodating a workpiece to be positioned. The positioning assembly 12 includes a plurality of centering blocks 121, and the plurality of centering blocks 121 are arranged on the mounting seat 11 along the circumference of the receiving space 114. The transmission assembly 13 has an input end and an output end, the input end is formed as a driving part, and the output end is connected to the plurality of centering blocks 121 and drives the plurality of centering blocks 121 to move synchronously along the radial direction of the receiving space 114, so that the positioning assembly 12 switches between a first state and a second state. When the positioning assembly 12 is in the first state, the plurality of centering blocks 121 are respectively in contact with the workpiece to concentrically position the workpiece. When the positioning assembly 12 is in the second state, the plurality of centering blocks 121 are respectively spaced apart from the workpiece to form a gap.

[0118] Therefore, according to the positioning mechanism 10 of the embodiment of the utility model, a plurality of centering blocks 121 are arranged around the accommodating space 114, and the transmission assembly 13 is used to drive the plurality of centering blocks 121 to clamp or release the workpiece along the radial direction of the accommodating space 114, and automatic centering can be performed in multiple directions, thereby achieving concentric positioning of the workpiece. Compared with the traditional V-shaped pneumatic positioning jaws, the positioning mechanism 10 of the utility model can prevent the workpiece from being unidirectionally offset due to the problem of contact before and after during positioning, which is beneficial to improving the positioning accuracy, thereby improving the processing accuracy and the yield of the product.

[0119] There are six centering blocks 121 to concentrically position the workpiece from six directions at the same time, which is beneficial to improving positioning accuracy and avoiding deviation of the workpiece in a certain direction. It is also beneficial to controlling the overall size of the positioning mechanism 10 and avoiding the positioning mechanism 10 occupying too much space.

[0120] One end of the centering block 121 facing the accommodating space 114 has a first arcuate surface 1211 , and the first arcuate surface 1211 is concave in a direction away from the accommodating space 114 .

[0121] The end of the centering block 121 away from the accommodating space 114 has a second arcuate surface 1212, and the transmission assembly 13 includes a transmission wheel 131, which is annular. A plurality of first guide surfaces 1311 arranged at intervals along the circumferential direction are provided on the inner circumferential surface of the transmission wheel 131, and the first guide surfaces 1311 are abutted against the second arcuate surface 1212. In the radial direction of the transmission wheel 131, the first guide surfaces 1311 are inclined toward the accommodating space 114, and a step 1312 is formed between two adjacent first guide surfaces 1311. The transmission wheel 131 is coaxially arranged with the accommodating space 114, and the transmission wheel 131 can rotate around its own axis to drive the plurality of centering blocks 121 to move synchronously along the radial direction of the accommodating space 114.

[0122] The positioning mechanism 10 also includes a plurality of first elastic members 14, which are arranged along the circumference of the accommodating space 114, and each first elastic member 14 is retractable in the radial direction of the accommodating space 114. One end of each first elastic member 14 close to the accommodating space 114 is connected to the mounting seat 11, and each centering block 121 is connected to the other end of at least one first elastic member 14 to press the centering block 121 against the second arc surface 1212.

[0123] Each centering block 121 is provided with a stop pin 122 , and each stop pin 122 penetrates the centering block 121 in the circumferential direction of the accommodating space 114 . Both ends of the stop pin 122 are provided with connecting seats 123 , respectively, and the connecting seats 123 are connected to the first elastic member 14 .

[0124] A plurality of guide members may be provided on the mounting seat 11, and the plurality of guide members may be arranged along the circumference of the accommodating space 114. Each guide member may extend radially along the accommodating space 114, and be used to guide the centering block 121 to extend radially along the accommodating space 114 to avoid displacement of the centering block 121.

[0125] Optionally, the guide member may be a guide channel 116, and the centering block 121, the first elastic member 14, the stop pin 122 and the connection seat 123 may be accommodated in the guide channel 116. The connection seat 123 may be slidably connected to the inner wall surface of the guide channel 116.

[0126] A toggle portion is provided on the outer circumference of the transmission wheel 131, and the transmission assembly 13 further includes a toggle member 132, which is movable between a first position and a second position along a first direction, and a matching portion is provided on the toggle member 132, which matches with the toggle portion to drive the transmission wheel 131 to rotate. When the toggle member 132 is in the first position, the positioning assembly 12 is in the first state. When the toggle member 132 is in the first position, the positioning assembly 12 is in the second state.

[0127] The transmission assembly 13 further includes a transmission rod 133 , which can perform linear motion. One end of the transmission rod 133 is connected to the toggle member 132 , and the other end of the transmission rod 133 forms an input end.

[0128] A bushing 117 may be provided between the transmission rod 133 and the mounting seat 11 to reduce the friction between the transmission rod 133 and the mounting seat 11 .

[0129] The input end protrudes from the outer surface of the mounting seat 11. When the toggle member 132 is in the first position, the length of the input end protruding from the outer surface of the mounting seat 11 is L1. When the toggle member 132 is in the first position, the length of the input end protruding from the outer surface of the mounting seat 11 is L2, and L1<L2.

[0130] The shifting portion includes a plurality of first teeth 1313 arranged along the circumference of the transmission wheel 131 , the shifting member 132 includes a rack 1321 , and the matching portion includes a plurality of second teeth 1323 arranged along the first direction. The first teeth 1313 and the second teeth 1323 mesh with each other for transmission.

[0131] The transmission rod 133 extends along a first direction and is movable along the first direction.

[0132] The positioning mechanism 10 also includes a second elastic member 15, one end of which is connected to the toggle member 132, and the other end of the second elastic member 15 is connected to the mounting seat 11. The second elastic member 15 is retractable in a first direction and is used to drive the toggle member 132 to move from the second position to the first position.

[0133] The mounting base 11 includes a front cover plate 111, a rear cover plate 112 and a side cover plate 113. The rear cover plate 112 is covered on the front cover plate 111 and cooperates with the front cover plate 111 to define an installation space 115 suitable for accommodating the positioning assembly 12 and the transmission assembly 13. The accommodating space 114 penetrates at least one of the front cover plate 111 and the rear cover plate 112 along the thickness direction of the front cover plate 111. The installation space 115 has an opening, and the opening is located at the end of the front cover plate 111 and the rear cover plate 112. The side cover plate 113 is covered at the opening.

[0134] The positioning mechanism 10 further includes a centering wheel 124, on which the centering block 121, the first elastic member 14, the stop pin 122 and the connecting seat 123 can be mounted, and the accommodating space 114 penetrates the centering wheel 124 along the axial direction of the centering wheel 124, and the centering wheel 124 is coaxially arranged with the accommodating space 114. One end of the centering block 121 can protrude from the inner surface of the centering wheel 124, and the other end of the centering block 121 can protrude from the outer surface of the centering wheel 124.

[0135] The operation process of the conveying device 100 of this embodiment is described in detail below.

[0136] The manipulator transports the workpiece 300 to the loading support 40, and the first driving member 32 of the loading station a drives the first push rod 31 to push the driving part 1331 along the first direction, so that the positioning mechanism 10 switches from the first state to the second state. The second driving member 52 drives the second push rod 51 to extend into the accommodating space 114 along the first direction to push the workpiece 300 into the accommodating space 114. The first driving member 32 of the loading station a drives the first push rod 31 to retreat and separate from the driving part 1331, and the positioning mechanism 10 switches from the second state to the first state under the action of its own reset structure, completing the positioning of the workpiece 300. The second driving member 52 drives the second push rod 51 to leave the accommodating space 114 along the first direction. The conveying mechanism 20 conveys the positioning mechanism 10 that has completed the positioning to the processing station b, and the workpiece 300 completes the corresponding processing steps at the processing station b, such as welding. The conveying mechanism 20 conveys the processed workpiece 300 and the corresponding positioning mechanism 10 to the unloading station c. The first driving member 32 of the unloading station c drives the first push rod 31 to push the driving part 1331 along the first direction, so that the positioning mechanism 10 switches from the first state to the second state. The third driving member 72 drives the third push rod 71 to extend into the accommodating space 114 along the first direction to push the workpiece 300 out of the accommodating space 114 and drop it onto the unloading support 60. The manipulator removes the workpiece 300 on the unloading support 60. The third driving member 72 drives the third push rod 71 to leave the accommodating space 114 along the first direction. The conveying mechanism 20 conveys the positioning mechanism 10 from the unloading station c back to the loading station a, and then performs the next round of conveying.

[0137] The embodiment of the utility model further provides a welding device, which comprises a conveying device 100 and a welding device 200 according to any of the above embodiments. The welding device 200 is arranged at the processing station b, and is used to weld the workpiece 300 in the positioning mechanism 10. The workpiece 300 can be a cylindrical battery cell, and the welding device 200 can weld the collector plate to both ends of the cylindrical battery cell.

[0138] Since the conveying device 100 according to the embodiment of the present invention has the above technical effects, the welding equipment according to the embodiment of the utility model also has the corresponding technical effects, that is, it is conducive to simplifying the structure of the conveying device 100, realizing the assembly line positioning and conveying of the workpiece 300, and improving the production efficiency. At the same time, the positioning mechanism 10 is driven by a single power source to automatically adjust the center in at least two directions of the workpiece 300 at the same time, realizing the concentric positioning of the workpiece 300, and preventing the workpiece 300 from unidirectionally deviating due to the problem of contact in sequence during positioning, which is conducive to improving the positioning accuracy, thereby improving the processing accuracy and the yield of the product.

[0139] According to some other embodiments of the present invention, Figures 14 to 16As shown, the welding device 200 includes two suction head assemblies 201 and two fourth driving members 202. The two suction head assemblies 201 are arranged at intervals on both sides of the conveying mechanism 20 along the width direction of the conveying mechanism 20, and the suction head assemblies 201 are used to absorb the workpieces to be welded. The two fourth driving members 202 are connected to the two suction head assemblies 201 in a one-to-one correspondence, and each fourth driving member 202 is used to drive the corresponding suction head assembly 201 to move along the width direction of the conveying mechanism 20.

[0140] Specifically, at the processing station b, a suction head assembly 201 and a fourth driving member 202 may be respectively provided on both sides of the conveying mechanism 20. The fourth driving member 202 can drive the suction head assembly 201 to approach or move away from the cylindrical battery core on the positioning mechanism 10 along the third direction. The suction head assembly 201 can absorb the current collecting plate and press the current collecting plate against the end surface of the cylindrical battery core.

[0141] During welding, the fourth driving member 202 first drives the suction head assembly 201 close to the positioning mechanism 10, so that the collecting plate on the suction head assembly 201 abuts against one end of the cylindrical battery cell, and then the collecting plate and the cylindrical battery cell are welded. After welding is completed, the fourth driving member 202 drives the suction head assembly 201 away from the positioning mechanism 10, and then the conveying mechanism 20 conveys the positioning mechanism 10 to the unloading station c for unloading.

[0142] In this embodiment, a pair of suction head assemblies 201 and fourth driving members 202 are provided, so that welding can be performed simultaneously on both sides of the workpiece 300 , which is beneficial to improving processing efficiency on the one hand, and improving processing accuracy on the other hand, thereby improving the yield rate.

[0143] Optionally, the fourth driving member 202 may include but is not limited to an electric cylinder, and the electric cylinder may be mounted on the mounting plate 206 .

[0144] In some specific embodiments of the present invention, the suction head assembly 201 includes a mounting block 2011 and a pressure head 2012. The mounting block 2011 is connected to the fourth driving member 202. The pressure head 2012 is disposed on the mounting block 2011, and the pressure head 2012 is used to absorb the welded part and press the welded part against the end of the workpiece 300.

[0145] In other words, the suction head assembly 201 of this embodiment is mainly composed of a mounting block 2011 and a pressure head 2012. The mounting block 2011 can be connected to the fourth driving member 202, and the pressure head 2012 is arranged on a side of the mounting block 2011 facing the positioning mechanism 10, and one side of the pressure head 2012 can face the positioning mechanism 10, and the pressure head 2012 can absorb the collector plate and press the collector plate against the end surface of the cylindrical battery cell.

[0146] According to some optional embodiments of the present invention, Fig.16As shown, the welding device 200 also includes two laser assemblies 203, which are spaced apart on both sides of the conveying mechanism 20 along the width direction of the conveying mechanism 20, and the two suction head assemblies 201 are located between the two laser assemblies 203. The laser assembly 203 is used to weld the workpiece to be welded and the workpiece 300.

[0147] After the two suction head assemblies 201 press the collector plate against the two ends of the cylindrical battery core, the two laser assemblies 203 can weld the collector plate to the cylindrical battery core by laser welding. Laser welding has the advantages of small penetration, small deformation, high weld quality and high precision.

[0148] According to some other embodiments of the present utility model, the welding device 200 further includes a buffer assembly 204 and a pressure sensor 205. The buffer assembly 204 is connected between the suction head assembly 201 and the fourth driving member 202, and is used to buffer the suction head assembly 201. The pressure sensor 205 is connected between the buffer assembly 204 and the suction head assembly 201, and is used to detect the pressure on the suction head assembly 201.

[0149] Specifically, a buffer assembly 204 is arranged between the suction head assembly 201 and the fourth driving member 202. When the fourth driving member 202 drives the suction head assembly 201 to abut against the cylindrical battery cell, a part of the pressure applied by the fourth driving member 202 can be absorbed by the buffer assembly 204 to reduce the pressure of the suction head assembly 201 on the cylindrical battery cell, thereby preventing excessive pressure from damaging the collecting plate or the battery.

[0150] Optionally, the cushioning assembly 204 may include one or more springs.

[0151] In addition, a pressure sensor 205 may be provided between the suction head assembly 201 and the fourth driving member 202 to sense the pressure on the suction head, so as to control the pressure of the suction head assembly 201 on the cylindrical battery cell to prevent excessive pressure from damaging the collector plate or the battery.

[0152] 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 conveying device, characterized in that: The conveying device has a loading station and a processing station, and the conveying device includes: A positioning mechanism, wherein the positioning mechanism defines an accommodating space suitable for accommodating a workpiece, and the positioning mechanism has a movable driving part; A conveying mechanism, the conveying mechanism is used to convey the positioning mechanism from the loading station to the processing station; A driving mechanism, wherein the driving mechanism is at least arranged at the loading station, and the driving mechanism is used to drive the driving part so that the positioning mechanism positions or releases the workpiece in the accommodating space.

2. The conveying device according to claim 1, characterized in that The driving portion protrudes from the surface of the positioning mechanism.

3. The conveying device according to claim 2, characterized in that: The driving part is movable along a first direction, and the driving mechanism comprises: a first push rod, the first push rod abutting against the driving portion; A first driving member is connected to the first push rod and is used to drive the first push rod to push the driving part along the first direction to release the positioning mechanism.

4. The conveying device according to claim 3, characterized in that: At the loading station, the plurality of positioning mechanisms on the conveying mechanism are arranged along the second direction, the number of the driving mechanisms is multiple, and the plurality of driving mechanisms are arranged along the second direction, and the first direction is perpendicular to the second direction.

5. The conveying device according to claim 4, characterized in that: The accommodating space passes through the positioning mechanism along the width direction of the conveying mechanism, and the first direction, the second direction and the width direction of the conveying mechanism are perpendicular to each other.

6. The conveying device according to any one of claims 1 to 5, characterized in that: Also includes: A loading support, which is arranged at the loading station and located on one side of the conveying mechanism, and is used to carry the workpiece; A loading mechanism is arranged at the loading station and located at a side of the loading support away from the conveying mechanism, and is used to push the workpiece on the loading support into the accommodating space.

7. The conveying device according to claim 6, characterized in that The feeding mechanism comprises: A second push rod, the second push rod extending along the width direction of the conveying mechanism, and the second push rod having an end close to the accommodating space for pushing the workpiece; A second driving member is connected to an end of the second push rod away from the accommodating space to drive the second push rod to move along the width direction of the conveying mechanism.

8. The conveying device according to claim 5, characterized in that: The conveying device further comprises a material unloading station, which is arranged downstream of the processing station, and the material unloading station is provided with the driving mechanism, and further comprises: A material unloading support, which is arranged at the material unloading station and located on one side of the conveying mechanism; A material unloading mechanism is arranged at the material unloading station and located at the other side of the conveying mechanism, and is used for pushing the workpiece in the accommodating space toward the material unloading support.

9. The conveying device according to claim 8, characterized in that: The unloading mechanism comprises: a third push rod, the third push rod extending along the width direction of the conveying mechanism, the third push rod facing one end of the accommodating space for pushing the workpiece; A third driving member is connected to the other end of the third push rod to drive the third push rod to move along the width direction of the conveying mechanism.

10. The conveying device according to claim 1, characterized in that The conveying mechanism comprises: A conveyor line, the conveyor line passes through the loading station and the processing station, and is used to transport the positioning mechanism from the loading station to the processing station; A plurality of carriers are arranged on the conveying line, the carriers are connected to the positioning mechanism, and the conveying line is used to transport the carriers from the loading station to the processing station.

11. The conveying device according to claim 10, characterized in that The conveyor line is ring-shaped and is used to reciprocate the positioning mechanism between the loading station and the processing station.

12. The conveying device according to claim 10, characterized in that The conveyor line is a magnetic suspension conveyor line or a belt conveyor line.

13. The conveying device according to claim 10, characterized in that Also includes: A limiting mechanism is arranged at the loading station and is used to limit the carrier in the width direction of the conveying mechanism.

14. The conveying device according to claim 13, characterized in that The carrier has limiting surfaces at both ends of the conveying mechanism in the width direction, and the limiting mechanism includes: Two brackets, the two brackets are arranged at the loading station, and the carrier is located between the two brackets; A plurality of rollers are arranged on the two brackets along the extension direction of the conveyor line, and each of the limiting surfaces is connected to at least one roller to limit the carrier.

15. A welding device, characterized in that: include: A conveying device, wherein the conveying device is the conveying device according to any one of claims 1 to 14; A welding device is arranged at the processing station and is used for welding the workpiece in the positioning mechanism.

16. The welding device according to claim 15, characterized in that The welding device comprises: Two suction head assemblies, which are arranged at intervals on both sides of the conveying mechanism along the axial direction of the accommodating space, and are used to absorb the parts to be welded; Two fourth driving members are connected to the two suction head assemblies in a one-to-one correspondence, and each of the fourth driving members is used to drive the corresponding suction head assembly to move along the axial direction of the accommodating space.

17. The welding device according to claim 16, characterized in that The suction head assembly comprises: a mounting block connected to the fourth driving member; A pressure head is arranged on the mounting block, and is used for adsorbing the workpiece to be welded and pressing the workpiece to be welded against the end of the workpiece.

18. The welding device according to claim 16, characterized in that The welding device also includes: Two laser assemblies are arranged at two sides of the conveying mechanism at intervals along the axial direction of the accommodating space, and the two suction head assemblies are located between the two laser assemblies. The laser assemblies are used to weld the workpiece to be welded and the workpiece.

19. The welding device according to claim 16, characterized in that The welding device also includes: A buffer assembly, the buffer assembly is connected between the suction head assembly and the fourth driving member, and is used to buffer the suction head assembly; A pressure sensor is connected between the buffer assembly and the suction head assembly and is used to detect the pressure applied to the suction head assembly.

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