Accurate positioning device for battery shell welding

Abstract

The invention belongs to the technical field of battery shell machining, and particularly relates to a precise positioning device for battery shell welding, which comprises a base, a mounting plate and a fixing plate, the top of the mounting plate is fixedly connected with a plurality of symmetrically arranged first air cylinders, and the output ends of the first air cylinders are fixedly connected with the top of the base; the bottom of the mounting plate is fixedly connected with an electromagnet; the fixing plate is fixedly connected with the top of the base, the top of the fixing plate is fixedly connected with a supporting plate through a plurality of symmetrically-arranged fixing rods, the top of the fixing plate is fixedly connected with a plurality of second air cylinders, and the output ends of the second air cylinders are fixedly connected with a jacking plate; one side of the jacking plate is fixedly connected with two first jacking rods which are symmetrically arranged, and the two ends, away from the first jacking rods, of the jacking plate are fixedly connected with second jacking rods. By adopting a mechanical positioning structure, the battery shell can be accurately and quickly positioned, so that the subsequent welding precision of the battery shell is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of battery casing processing technology, and in particular to a precision positioning device for welding battery casings. Background Technology

[0002] Electric vehicles are vehicles powered by an onboard power source, with the wheels driven by an electric motor. Electric vehicle power sources can be broadly categorized into two types: rechargeable batteries and fuel cells. Rechargeable batteries are suitable for pure electric vehicles and include lead-acid batteries, nickel-metal hydride batteries, sodium-sulfur batteries, secondary lithium batteries, air batteries, and ternary lithium batteries.

[0003] Typically, the power source for a pure electric vehicle consists of several individual battery cells connected in series to form a battery pack. This battery pack is then housed in a battery casing and installed onto the vehicle body. During the production of the electric vehicle battery casing, welding is used to assemble the components together.

[0004] However, existing battery casing welding positioning devices generally use vision mechanisms for positioning, which cannot accurately and quickly position the battery casing, thus affecting the subsequent welding accuracy of the battery casing. Summary of the Invention

[0005] 1. Technical problems to be solved The purpose of this invention is to solve the problem that existing battery casing welding positioning devices generally use vision mechanisms for positioning, which cannot accurately and quickly position the battery casing. Therefore, this invention proposes a precision positioning device for battery casing welding.

[0006] 2. Technical Solution To achieve the above objectives, the present invention adopts the following technical solution: A precision positioning device for welding battery casings includes a base, a mounting plate, and a fixing plate. A plurality of first cylinders are fixedly connected to the top of the mounting plate, and the output end of the first cylinders is fixedly connected to the top of the base. An electromagnet is fixedly connected to the bottom of the mounting plate. The fixing plate is fixedly connected to the top of the base. The top of the fixing plate is fixedly connected to a support plate by a plurality of symmetrically arranged fixing rods. A plurality of second cylinders are fixedly connected to the top of the fixing plate. The output end of the second cylinder is fixedly connected to a lifting plate. Two first push rods are fixedly connected to one side of the lifting plate. The two ends of the lifting plate away from the first push rods are fixedly connected to second push rods. The support plate is provided with multiple sliding openings corresponding to the first and second push rods. The top of the support plate is slidably connected with four positioning blocks corresponding to the first and second push rods respectively. The tops of the first and second push rods are wedge-shaped, and the bottoms of the positioning blocks are provided with wedge-shaped grooves.

[0007] Preferably, the bottom of the base is fixedly connected to a plurality of fastening blocks, and the fastening blocks are provided with fastening ports.

[0008] Preferably, the bottom of the lifting plate is fixedly connected with a plurality of symmetrically arranged guide rods, and the top of the fixed plate is provided with a plurality of guide cavities corresponding to the guide rods.

[0009] Preferably, a limit block is fixedly connected to one end of the guide rod located inside the guide cavity.

[0010] Preferably, a first spring is sleeved on the guide rod, and the two ends of the first spring abut against the lifting plate and the fixing plate, respectively.

[0011] Preferably, the top of the support plate is provided with a plurality of sliding grooves corresponding to the positioning block, a plurality of support rods are slidably connected in the sliding grooves, one end of the support rods is fixedly connected to the positioning block, and the inner wall of the sliding groove is provided with slots corresponding to the support rods.

[0012] Preferably, a second spring is sleeved on the support rod, and the two ends of the second spring are fixedly connected to the positioning block and the inner wall of the slide groove, respectively.

[0013] Preferably, a support sleeve is slidably sleeved at the output end of the first cylinder, and one side of the support sleeve abuts against the bottom of the mounting plate.

[0014] 3. Beneficial effects Compared with the prior art, the advantages of this invention are: (1) In this invention, by adopting a mechanical positioning structure, the battery casing can be positioned accurately and quickly, thereby effectively improving the subsequent welding accuracy of the battery casing.

[0015] (2) The fastening block in this invention can facilitate the installation and fixing of the base, the guide rod can prevent the lifting plate from shaking, the limiting block can prevent the guide rod from falling out of the guide cavity, and the first spring can provide a certain elastic support for the lifting plate.

[0016] (3) The support rod in this invention can provide a certain support and guidance for the positioning block, the second spring can provide elastic support for the positioning block, and the support sleeve can prevent the first cylinder from shaking. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a precision positioning device for welding battery casings proposed in this invention; Figure 2 This is a side cross-sectional view of the lifting plate in a precision positioning device for welding battery casings proposed in this invention. Figure 3This is a top view of the lifting plate in a precision positioning device for welding battery casings proposed in this invention.

[0018] In the diagram: 1. Base, 2. Mounting plate, 3. Fixing plate, 4. First cylinder, 5. Electromagnet, 6. Fixing rod, 7. Support plate, 8. Second cylinder, 9. Lifting plate, 10. First push rod, 11. Second push rod, 12. Positioning block, 13. Fastening block, 14. Guide rod, 15. Limiting block, 16. First spring, 17. Support rod, 18. Second spring, 19. Support sleeve. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Example 1: Reference Figure 1-3 A precision positioning device for welding battery casing includes a base 1, a mounting plate 2, and a fixing plate 3. The bottom of the base 1 is fixedly connected to multiple fastening blocks 13, and the fastening blocks 13 are provided with fastening holes to facilitate locking and fixing the base 1. The top of the mounting plate 2 is fixedly connected to multiple symmetrically arranged first cylinders 4, which are used to drive the mounting plate 2 to move up and down. The output end of the first cylinder 4 is fixedly connected to the top of the base 1. The bottom of the mounting plate 2 is fixedly connected to an electromagnet 5, which is used to attract the upper casing of the battery. The output end of the first cylinder 4 is slidably sleeved with a support sleeve 19 to prevent the first cylinder 4 from shaking. One side of the support sleeve 19 abuts against the bottom of the mounting plate 2. In this invention, the top of the fixing plate 3 is fixedly connected to the top of the base 1. The top of the fixing plate 3 is fixedly connected to a support plate 7 by a plurality of symmetrically arranged fixing rods 6 for supporting the positioning block 12. The top of the fixing plate 3 is fixedly connected to a plurality of second cylinders 8 for driving the lifting plate 9 to move up and down. The output end of the second cylinder 8 is fixedly connected to the lifting plate 9 for driving the first push rod 10 and the second push rod 11 to move. The bottom of the lifting plate 9 is fixedly connected to a plurality of symmetrically arranged guide rods 14. The top of the fixing plate 3 is provided with a plurality of guide cavities corresponding to the guide rods 14, which play a certain guiding role for the lifting plate 9. In this invention, a limit block 15 is fixedly connected to one end of the guide rod 14 located in the guide cavity to prevent the guide rod 14 from falling out of the guide cavity. A first spring 16 is sleeved on the guide rod 14. The two ends of the first spring 16 abut against the lifting plate 9 and the fixing plate 3 respectively. Two symmetrically arranged first push rods 10 are fixedly connected to one side of the lifting plate 9 to drive the positioning block 12 to slide. The two ends of the lifting plate 9 away from the first push rods 10 are fixedly connected to second push rods 11. In this invention, the support plate 7 is provided with a plurality of sliding openings corresponding to the first top rod 10 and the second top rod 11. The top of the support plate 7 is slidably connected with four positioning blocks 12 corresponding to the first top rod 10 and the second top rod 11 respectively, for positioning the battery casing. The tops of the first top rod 10 and the second top rod 11 are both wedge-shaped, and the bottom of the positioning block 12 is provided with a wedge-shaped groove. In this invention, the top of the support plate 7 is provided with multiple sliding grooves corresponding to the positioning block 12. Multiple support rods 17 are slidably connected in the sliding grooves to support the positioning block 12. One end of the support rod 17 is fixedly connected to the positioning block 12. The inner wall of the sliding groove is provided with slots corresponding to the support rod 17. A second spring 18 is sleeved on the support rod 17. The two ends of the second spring 18 are fixedly connected to the positioning block 12 and the inner wall of the sliding groove, respectively, so as to play a certain elastic support role for the positioning block 12.

[0021] In this invention, the upper battery casing is placed on top of the support plate 7, and then the second cylinder 8 is activated to move the lifting plate 9 upward, simultaneously moving the first push rod 10 and the second push rod 11 upward, thereby moving multiple positioning blocks 12 synchronously to position the upper battery casing. The support rod 17 prevents the positioning blocks 12 from shaking, the guide rod 14 prevents the lifting plate 9 from shaking, and the first spring 16 provides a certain elastic buffer for the lifting plate 9. Then, the first cylinder 4 is activated to move downward, and the upper battery casing is attracted and removed by the electromagnet 5. The lower battery casing is then placed between the multiple positioning blocks 12, and the first cylinder 4 moves the upper battery casing downward to fit against the lower battery casing, where welding is then performed.

[0022] In this invention, by employing a mechanical positioning structure, the battery casing can be positioned accurately and quickly, thereby effectively improving the subsequent welding accuracy of the battery casing.

[0023] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A precision positioning device for welding battery casings, comprising a base (1), a mounting plate (2), and a fixing plate (3), characterized in that, The top of the mounting plate (2) is fixedly connected to a plurality of symmetrically arranged first cylinders (4), the output end of the first cylinders (4) is fixedly connected to the top of the base (1), and the bottom of the mounting plate (2) is fixedly connected to an electromagnet (5). The fixing plate (3) is fixedly connected to the top of the base (1). The top of the fixing plate (3) is fixedly connected to a support plate (7) by a plurality of symmetrically arranged fixing rods (6). The top of the fixing plate (3) is fixedly connected to a plurality of second cylinders (8). The output end of the second cylinder (8) is fixedly connected to a lifting plate (9). Two symmetrically arranged first push rods (10) are fixedly connected to one side of the lifting plate (9). The two ends of the lifting plate (9) away from the first push rods (10) are fixedly connected to second push rods (11). The support plate (7) is provided with multiple sliding openings corresponding to the first top rod (10) and the second top rod (11). The top of the support plate (7) is slidably connected with four positioning blocks (12) corresponding to the first top rod (10) and the second top rod (11). The tops of the first top rod (10) and the second top rod (11) are wedge-shaped, and the bottom of the positioning block (12) is provided with a wedge-shaped groove.

2. The precision positioning device for welding battery casings according to claim 1, characterized in that, The bottom of the base (1) is fixedly connected to a plurality of fastening blocks (13), and the fastening blocks (13) are provided with fastening ports.

3. The precision positioning device for welding battery casings according to claim 1, characterized in that, The bottom of the lifting plate (9) is fixedly connected with a plurality of symmetrically arranged guide rods (14), and the top of the fixing plate (3) is provided with a plurality of guide cavities corresponding to the guide rods (14).

4. The precision positioning device for welding battery casings according to claim 3, characterized in that, The guide rod (14) is fixedly connected to a limit block (15) at one end located in the guide cavity.

5. The precision positioning device for welding battery casings according to claim 3, characterized in that, A first spring (16) is sleeved on the guide rod (14), and the two ends of the first spring (16) abut against the lifting plate (9) and the fixing plate (3) respectively.

6. The precision positioning device for welding battery casings according to claim 1, characterized in that, The top of the support plate (7) is provided with multiple sliding grooves corresponding to the positioning block (12). Multiple support rods (17) are slidably connected in the sliding grooves. One end of the support rod (17) is fixedly connected to the positioning block (12). The inner wall of the sliding groove is provided with slots corresponding to the support rods (17).

7. The precision positioning device for welding battery casings according to claim 6, characterized in that, A second spring (18) is sleeved on the support rod (17), and the two ends of the second spring (18) are fixedly connected to the positioning block (12) and the inner wall of the slide groove, respectively.

8. The precision positioning device for welding battery casings according to claim 1, characterized in that, The output end of the first cylinder (4) is slidably sleeved with a support sleeve (19), and one side of the support sleeve (19) abuts against the bottom of the mounting plate (2).

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