Solder strip stretching and transferring device

Abstract

The utility model discloses a welding strip stretching and transferring device, which relates to the technical field of battery pack production and comprises a plurality of strip grabbing components, each strip grabbing component comprises a mounting component, a fixed clamping belt unit fixedly connected onto the mounting component and a movable clamping belt unit connected onto the mounting component in a sliding manner, the movable clamping belt unit and the fixed clamping belt unit are arranged in a spaced mode in the first direction, each of the movable clamping belt unit and the fixed clamping belt unit comprises a clamp assembly for clamping the head end or the tail end of a set of welding belt, and a pushing part is connected between the movable clamping belt unit and the mounting assembly; the pushing component is used for driving the movable clamping belt unit to be close to or far away from the fixed clamping belt unit in the first direction, so that each clamped welding belt can be stretched, the stretched welding belt is linear after being released, bending deformation does not occur, and the position precision of the welding belt laid on a battery piece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery assembly production, in particular to a welding strip stretching and transporting device. Background Art

[0002] During the preparation of battery strings, the soldering ribbon is pulled out from the soldering ribbon roll and cut into a predetermined length, and is used to interconnect and weld the battery cells to form a battery string. The soldering ribbon pulled out from the soldering ribbon roll is bent when in a free state. After the bent soldering ribbon is cut and placed on the battery cell, the two ends will warp, resulting in poor welding between the soldering ribbon and the battery cell. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a welding tape stretching and transportation device, which can clamp the two ends of the welding tape and stretch the welding tape during the process of transporting and laying the welding tape, so that the prepared welding tape is straightened without bending.

[0004] A welding tape stretching and transfer device proposed in the present application includes: a plurality of gripping belt assemblies, each of the gripping belt assemblies includes a mounting assembly, a fixed clamping unit fixedly connected to the mounting assembly, and a mobile clamping unit slidably connected to the mounting assembly, and the plurality of mobile clamping units and the fixed clamping units are arranged in sequence along a first direction at intervals, and the mobile clamping unit and the fixed clamping unit each include a clamping assembly for clamping the leading end or the tail end of the welding tape respectively, wherein a pushing component is connected between the mobile clamping unit and the mounting assembly, and the pushing component is used to drive the mobile clamping unit to approach or move away from the fixed clamping unit in the first direction.

[0005] Optionally, the clamp assemblies in two adjacent grab belt assemblies are staggered along a second direction, and the second direction is perpendicular to the first direction in a horizontal plane. The movable clamping unit and the clamp assemblies on the fixed clamping unit in the interval Nth and N+2th groups of grab belt assemblies jointly clamp the head and tail ends of a group of welding strips.

[0006] Optionally, it also includes end gripping assemblies arranged at both ends of several of the gripping assemblies, and each of the end gripping assemblies is provided with a group of the mobile clamping units and the fixed clamping units, wherein the clamping assemblies on the mobile clamping units and the fixed clamping units are staggered in the second direction, and the mobile clamping units and the fixed clamping units in the end gripping assemblies at both ends respectively clamp a group of short welding strips located at the head and tail ends of the battery string together with an adjacent gripping assembly, and clamp a group of long welding strips together with an interval of the gripping assembly.

[0007] Optionally, the pushing component includes a spacing cylinder and a hinge seat connected to the driving end of the spacing cylinder, one end of the hinge seat is fixedly connected to the mobile entrainment unit, and the spacing cylinder vertically drives the other end of the hinge seat to drive the mobile entrainment unit to move horizontally.

[0008] Optionally, the clamp group includes a fixed plate, and a first clamping plate and a second clamping plate installed on the fixed plate, the fixed plate is rotatably connected to a driving rod, one end of the driving rod is connected to the driving component through a connecting rod, and the other end is cooperatively connected to the inner wall cam of the guide hole on the first clamping plate and the second clamping plate, and the bottom ends of the first clamping plate and the second clamping plate are provided with a plurality of clamping arms extending downward, and the clamping arms on the first clamping plate and the clamping arms on the second clamping plate are arranged one by one opposite to each other and are used to clamp a single welding strip.

[0009] Optionally, a stop column higher than the clamping end surface is provided at the end of each clamping arm on the first clamping plate or the second clamping plate, and the stop column is laterally abutted against a gap between clamping arms oppositely disposed on the first clamping plate and the second clamping plate.

[0010] Optionally, the fixed entrainment unit and the movable entrainment unit respectively include a fixed mounting plate fixedly connected to the bottom of the mounting assembly and a movable mounting plate slidably connected to the bottom of the mounting assembly via a slide rail, the fixed end of the pushing component is connected to the mounting assembly, the driving end of the pushing component is connected to the movable mounting plate, and the clamping assembly is connected underneath both the movable mounting plate and the fixed mounting plate.

[0011] Optionally, the fixed mounting plate and the movable mounting plate both include a first mounting plate and a second mounting plate stacked up and down, the first mounting plate is connected to the mounting assembly, the second mounting plate is connected to the clamping assembly, the second mounting plate is connected to the first mounting plate via a limiting column, the limiting column passes through the bar hole on the first mounting plate and is fixedly connected to the second mounting plate, and a spring is provided on the upper sleeve of the limiting column, the spring abuts against the upper end surfaces of the first mounting plate and the limiting column, and an adjustment rod is provided on the side end surface of the second mounting plate.

[0012] Optionally, the welding strip stretching and transporting device also includes a transporting mechanism connected to the plurality of the grab belt assemblies through a crossbeam, and the transporting mechanism includes a vertical driving electric cylinder for driving the grab belt assembly to move vertically and a horizontal driving electric cylinder for horizontally driving the vertical driving electric cylinder.

[0013] The technical solution provided by the utility model clamps multiple groups of arranged welding tapes through a plurality of gripping belt assemblies, each gripping belt assembly includes a movable clamping belt unit and a fixed clamping belt unit, and the fixed clamping belt unit and the movable clamping belt unit in each interval of two gripping belt assemblies clamp the two ends of a group of welding tapes together, and during the process of clamping and transporting the welding tapes, the pushing component connected to the movable clamping belt unit controls the movable clamping belt unit to clamp one end of the welding tape away from the other group of fixed clamping belt units by a predetermined distance, so that each clamped welding tape can be stretched, and the stretched welding tape is straight after being released, and does not bend or deform after being released, and is laid on the battery cell with high accuracy, thereby improving the welding quality of the welding tape and the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a bottom view schematic diagram of a welding strip stretching and transporting device proposed by the utility model;

[0016] Figure 2 This is a structural schematic diagram of the grab belt assembly proposed by the utility model in the first position;

[0017] Figure 3 This is a schematic structural diagram of the belt grabbing assembly proposed by the utility model in the second position;

[0018] Figure 4 It is a structural schematic diagram of the clamp assembly in the utility model;

[0019] Figure 5 It is a partial enlarged schematic diagram of the clamp arm in the clamp assembly of the utility model;

[0020] Figure 6 It is a structural schematic diagram of a fixed mounting plate or a movable mounting plate in the utility model;

[0021] Figure 7 The utility model is a structural schematic diagram of a welding strip stretching and transferring device proposed by the utility model.

[0022] Wherein, the accompanying drawings are marked as follows:

[0023] 10. Welding strip; 20. Grasping strip assembly; 21. Fixed clamping unit; 22. Mobile clamping unit; 23. Mounting assembly; 24. Clamp assembly; 241. Driving component; 242. Fixed plate; 243. First clamping plate; 244. Second clamping plate; 245. Driving rod; 246. Linking rod; 247. Clamp arm; 2471. Stop column; 25. Mobile mounting plate; 251. First mounting plate; 252. Second mounting plate; 253. Limiting column; 254. Spring; 255. Adjusting rod; 26. Fixed mounting plate; 31. Spacing cylinder; 32. Hinge seat; 40. End grabbing assembly; 50. Vertical drive electric cylinder; 51. Horizontal drive electric cylinder; 52. Crossbeam. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] like Figure 1 , Figure 2 As shown, a welding tape stretching and transferring device comprises: a plurality of gripping band assemblies 20 arranged along the length direction of the welding tape 10, each gripping band assembly 20 comprises a mounting assembly 23, and a fixed entraining band unit 21 fixedly connected to the mounting assembly 23, and a movable entraining band unit 22 slidably connected to the mounting assembly 23, a plurality of movable entraining band units 22 and fixed entraining band units 21 are sequentially spaced in a first direction, the first direction being the extension direction of the length of the welding tape 10, the movable entraining band unit 22 and the fixed entraining band unit 21 respectively comprise a group of clamping band assemblies 24 for clamping the head end or the tail end of the welding tape 10, wherein a pushing component is connected between the movable entraining band unit 22 and the mounting assembly 23, and the pushing component is used to drive the movable entraining band unit 22 to approach or move away from the fixed entraining band unit 21 in the first direction.

[0027] Specifically, refer to Figure 1As shown, a group of mobile clamping units 22 and fixed clamping units 21 arranged at intervals in several gripping belt assemblies 20 jointly clamp the head end and the tail end of a group of welding ribbons 10. In the process of clamping and transferring the welding ribbons 10, the pushing component on each gripping belt assembly 20 drives the mobile clamping unit 22, so that the mobile clamping unit 22 is moved away from a preset distance relative to a fixed clamping unit 21 clamping the same welding ribbon 10, so that the welding ribbon 10 clamped between the fixed clamping unit 21 and the mobile clamping unit 22 is elongated and straightened to adapt to the position of laying the battery cell, so that the welding ribbon 10 laid on the battery cell will not bend or warp, thereby improving the position accuracy of the welding ribbon 10 and the battery cell, thereby improving the welding quality of the battery string.

[0028] In some embodiments, reference Figure 1 As shown, the clamp assemblies 24 in two adjacent gripping belt assemblies 20 are staggered in a second direction, and the second direction is horizontally perpendicular to the first direction. The solder tape stretching and transporting device is used to grab a plurality of groups of staggered solder tapes 10. The staggered solder tapes 10 are used to lay a back-contact battery string. In the back-contact battery string, the staggered solder tapes 10 are evenly distributed and connected in series on the same surface of the battery cell. The solder tapes 10 between the Nth group and the N+2th group of gripping belt assemblies 20 pass through a gripping belt assembly 20 between the two gripping belt assemblies 20 to clamp the head and tail ends of the same group of solder tapes 10. For example, multiple grab belt assemblies 20 arranged side by side clamp multiple groups of staggered welding tapes 10 in sequence, wherein the fixed clamping unit 21 in the first grab belt assembly 20 and the movable clamping unit 22 in the third grab belt assembly 20 clamp the two ends of the first group of welding tapes 10, the fixed clamping unit 21 in the second grab belt assembly 20 and the movable clamping unit 22 in the fourth grab belt assembly 20 clamp the two ends of the second group of welding tapes 10, and the second group of welding tapes 10 pass through the gap of the third grab belt assembly 20, and so on, multiple grab belt assemblies 20 staggeredly clamp the two ends of the staggered welding tapes 10, and the movable clamping unit 22 on one of the grab belt assemblies 20 moves a preset distance relative to the fixed clamping unit 21 on another grab belt assembly 20 to stretch and straighten the welding tapes 10.

[0029] In some embodiments, reference Figure 1As shown, the welding strip stretching and transporting device also includes an end gripping assembly 40 arranged at both ends of all the gripping belt assemblies 20, and the end gripping assembly 40 also includes a mobile entrainment unit 22 and a fixed entrainment unit 21, and the clamping assembly 24 of the mobile entrainment unit 22 and the fixed entrainment unit 21 on the end gripping assembly 40 is staggered in the second direction, and the second direction is horizontally perpendicular to the first direction. The second direction is the arrangement direction of the welding strips 10 in the same group of welding strips 10, and the mobile entrainment unit 22 and the fixed entrainment unit 21 in the end gripping assembly 40 are respectively clamped together with an adjacent gripping belt assembly 20 A group of short welding ribbons are held at the head end of the battery string, and a group of long welding ribbons are clamped together with an interval gripping belt assembly 20. The long welding ribbons are used to connect the surfaces of two adjacent battery cells, and the short welding ribbons are only overlapped with the surface of a battery cell located at the two ends of the battery string, and extend out of the side of the battery cell as the lead-out line of the entire battery string. When the end gripping assembly 40 is used, the welding ribbon 10 grabbed by the welding ribbon stretching and transfer device is used to lay all the welding ribbons 10 of an entire battery string, so that a whole string of welding ribbons 10 is overlapped with multiple battery cells at one time, and welded into a whole string of battery strings at one time, further improving the laying efficiency of the battery string.

[0030] In some embodiments, Figure 3 As shown, the pushing component includes a spacing cylinder 31 for driving the mobile entrainment unit 22 to move, and a hinge seat 32 connected to the driving end of the spacing cylinder 31, one end of the hinge seat 32 is fixedly connected to the fixed entrainment unit 21, and the hinge seat 32 includes two hinged connecting rods. The spacing cylinder 31 vertically drives the hinge seat 32 to move, and the hinge seat 32 converts the vertical driving force into a horizontal pushing force, so that the mobile entrainment unit 22 moves horizontally away from or close to the fixed entrainment unit 21.

[0031] In some embodiments, Figure 4 As shown, the clamp assembly 24 includes a fixed plate 242 and a first clamping plate 243 and a second clamping plate 244 installed on the fixed plate 242, and a driving rod 245 is also provided on the fixed plate 242. One end of the driving rod 245 is connected to the driving component 241 through a connecting rod 246, and the other end is connected to the guide hole cam provided on the first clamping plate 243 and the second clamping plate 244. The other end of the driving rod 245 is a cam structure, and the cam is tangentially matched with the inner walls of the guide holes provided on the first clamping plate 243 and the second clamping plate 244 respectively, so that the driving rod 245 rotates and drives the first clamping plate 243 and the second clamping plate 244 to move in the opposite direction in the second direction. The bottom ends of the first clamping plate 243 and the second clamping plate 244 are both provided with a plurality of clamping arms 247 extending downward, wherein the clamping arms 247 on the first clamping plate 243 and the clamping arms 247 on the second clamping plate 244 are arranged one by one, and a welding strip 10 is clamped oppositely between the two corresponding clamping arms 247.

[0032] When the driving component 241 pushes the connecting rod 246 to move, the connecting rod 246 synchronously pushes one end of the driving rod 245, so that the other end of the driving rod 245 follows and rotates in the guide holes of the first clamping plate 243 and the second clamping plate 244, so as to simultaneously drive the first clamping plate 243 and the second clamping plate 244 to move in opposite directions, so that the clamping arms 247 relatively arranged on the first clamping plate 243 and the second clamping plate 244 clamp the welding strip 10 oppositely.

[0033] In some embodiments, Figure 5 As shown, the end of each clamping arm 247 of the first clamping plate 243 or the second clamping plate 244 is provided with a blocking column 2471 which is higher than the clamping end surface, and the blocking column 2471 is horizontally arranged at the gap between the clamping arms 247 which are relatively arranged between the first clamping plate 243 and the second clamping plate 244. The blocking column 2471 serves as a high position limit of the clamping end of the clamping arm 247. In order to control the height of each welding ribbon 10 between the clamping arms 247 to be consistent, the position of the welding ribbon 10 when it is uniformly placed on the surface of the battery cell is more accurate, and the height at which the welding ribbon 10 is released makes the time when the welding ribbon 10 falls consistent, thereby improving the efficiency of the transportation of the welding ribbon 10.

[0034] In some embodiments, the fixed entrainment unit 21 and the movable entrainment unit 22 respectively include a fixed mounting plate 26 fixedly connected to the bottom of the mounting assembly 23 and a movable mounting plate 25 slidably connected to the bottom of the mounting assembly 23 through a slide rail. The fixed end of the pushing component is connected to the mounting assembly 23, and the driving end of the pushing component is connected to the movable mounting plate 25. A clamping assembly 24 is connected below the movable mounting plate 25 and the fixed mounting plate 26.

[0035] Specifically, Figure 4 , Figure 6 As shown, the fixed mounting plate 26 and the movable mounting plate 25 both include a first mounting plate 251 and a second mounting plate 252 stacked up and down, wherein the first mounting plate 251 is placed above the second mounting plate 252 and connected to the mounting assembly 23, the second mounting plate 252 is connected to the clamp assembly 24, the second mounting plate 252 is connected to the first mounting plate 251 through a limiting column 253, the limiting column 253 passes through a bar hole on the first mounting plate 251 and is fixedly connected to the second mounting plate 252, a spring 254 is provided on the limiting column 253, and the spring 254 is connected to the first mounting plate 251 and the limiting column 253. The upper end surface of the positioning column 253 is abutted, so that the second mounting plate 252 is floatingly connected to the first mounting plate 251, and an adjusting rod 255 is provided on the side end surface of the second mounting plate 252, which is used to adjust the relative movement of the second mounting plate 252 relative to the first mounting plate 251 in the second direction, so as to adjust the position accuracy of the fixed clamping unit 21 and the movable clamping unit 22 connected to the second mounting plate 252 in the second direction, so that the clamping assemblies 24 corresponding to clamping each welding strip 10 are arranged in a straight line in the first direction, and the parallel spacing of each welding strip 10 in each group of welding strips 10 is accurately controlled.

[0036] Furthermore, if Figure 7 As shown, the solder strip stretching and transporting device also includes a transporting mechanism connected to a plurality of gripping belt assemblies 20 through a crossbeam 52, and the transporting mechanism includes a vertical driving electric cylinder 50 directly connected to the crossbeam 52 for vertically driving the gripping belt assembly 20 and a horizontal driving electric cylinder 51 for horizontally driving the vertical driving electric cylinder 50 and the gripping belt assembly 20, so as to move the prepared solder strip 10 to a laying position for combination with a battery cell, and during the transport process, the gripping belt assembly 20 performs a stretching action on each solder strip 10, so as to straighten the solder strip 10 before combining with the battery cell, so as to prevent the solder strip 10 combined with the battery cell from bending, warping, and other undesirable conditions.

[0037] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0038] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A welding strip stretching and transporting device, characterized in that: include: A plurality of gripping belt assemblies (20), each of the gripping belt assemblies (20) comprising a mounting assembly (23), a fixed entraining belt unit (21) fixedly connected to the mounting assembly (23), and a movable entraining belt unit (22) slidably connected to the mounting assembly (23), wherein the plurality of movable entraining belt units (22) and the fixed entraining belt units (21) are sequentially arranged at intervals along a first direction, wherein the movable entraining belt unit (22) and the fixed entraining belt unit (21) both comprise a clamping assembly (24) for clamping the leading end or the trailing end of the welding belt (10) respectively, wherein a pushing component is connected between the movable entraining belt unit (22) and the mounting assembly (23), and the pushing component is used for driving the movable entraining belt unit (22) to approach or move away from the fixed entraining belt unit (21) in the first direction.

2. The welding strip stretching and transporting device according to claim 1 is characterized in that: The clamping assemblies (24) in two adjacent gripping assemblies (20) are staggered along a second direction, and the second direction is perpendicular to the first direction in a horizontal plane. The movable clamping units (22) and the clamping assemblies (24) on the fixed clamping units (21) in the Nth and N+2th groups of the gripping assemblies (20) jointly clamp the head and tail ends of a group of welding strips (10).

3. The welding strip stretching and transporting device according to claim 2 is characterized in that: It also includes end gripping assemblies (40) arranged at both ends of a plurality of the gripping belt assemblies (20), each of the end gripping assemblies (40) being provided with a group of the movable entrainment units (22) and the fixed entrainment units (21), wherein the clamping assemblies (24) on the movable entrainment units (22) and the fixed entrainment units (21) are staggered in the second direction, and the movable entrainment units (22) and the fixed entrainment units (21) in the end gripping assemblies (40) at both ends respectively clamp a group of short welding strips located at the head and tail ends of the battery string together with an adjacent gripping belt assembly (20), and clamp a group of long welding strips together with an alternate gripping belt assembly (20).

4. The welding strip stretching and transporting device according to claim 1, characterized in that: The pushing component comprises a spacing cylinder (31) and a hinge seat (32) connected to the driving end of the spacing cylinder (31), one end of the hinge seat (32) is fixedly connected to the mobile entrainment unit (22), and the spacing cylinder (31) vertically drives the other end of the hinge seat (32) to drive the mobile entrainment unit (22) to move horizontally.

5. The welding strip stretching and transporting device according to claim 1, characterized in that: The clamp group includes a fixed plate (242), and a first clamping plate (243) and a second clamping plate (244) installed on the fixed plate (242); a driving rod (245) is rotatably connected to the fixed plate (242); one end of the driving rod (245) is connected to the driving component (241) through a connecting rod (246), and the other end is cooperatively connected to the inner wall cam of the guide hole on the first clamping plate (243) and the second clamping plate (244); the bottom ends of the first clamping plate (243) and the second clamping plate (244) are each provided with a plurality of clamping arms (247) extending downward; the clamping arms (247) on the first clamping plate (243) and the clamping arms (247) on the second clamping plate (244) are arranged one by one opposite to each other and are used to clamp a single welding strip (10).

6. The welding strip stretching and transporting device according to claim 5, characterized in that: The end of each clamping arm (247) on the first clamping plate (243) or the second clamping plate (244) is provided with a blocking column (2471) higher than the clamping end surface, and the blocking column (2471) is transversely arranged at the gap between the clamping arms (247) arranged opposite to each other on the first clamping plate (243) and the second clamping plate (244).

7. The welding strip stretching and transporting device according to claim 1, characterized in that: The fixed entrainment unit (21) and the movable entrainment unit (22) respectively comprise a fixed mounting plate (26) fixedly connected to the bottom of the mounting assembly (23) and a movable mounting plate (25) slidably connected to the bottom of the mounting assembly (23) via a slide rail; the fixed end of the pushing component is connected to the mounting assembly (23); the driving end of the pushing component is connected to the movable mounting plate (25); and the clamping assembly (24) is connected below both the movable mounting plate (25) and the fixed mounting plate (26).

8. The welding strip stretching and transporting device according to claim 7, characterized in that: The fixed mounting plate (26) and the movable mounting plate (25) both include a first mounting plate (251) and a second mounting plate (252) stacked up and down, the first mounting plate (251) being connected to the mounting assembly (23), the second mounting plate (252) being connected to the clamp assembly (24), the second mounting plate (252) being connected to the first mounting plate (251) via a limiting column (253), the limiting column (253) passing through a bar hole on the first mounting plate (251) and being fixedly connected to the second mounting plate (252), and a spring (254) being provided on the upper sleeve of the limiting column (253), the spring (254) being in contact with the upper end surfaces of the first mounting plate (251) and the limiting column (253), and an adjusting rod (255) being provided on the side end surface of the second mounting plate (252).

9. The welding strip stretching and transporting device according to claim 1, characterized in that: It also includes a transfer mechanism connected to a plurality of the gripping belt assemblies (20) via a crossbeam (52), the transfer mechanism including a vertical drive electric cylinder (50) for driving the gripping belt assemblies (20) to move vertically and a horizontal drive electric cylinder (51) for driving the vertical drive electric cylinder (50) horizontally.

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