Anti-deformation welding tool for large-size battery box cover plate

Abstract

The utility model relates to the technical field of battery frame welding, in particular to an anti-deformation welding tool for a large-size battery box body cover plate, which comprises a supporting platform, and a first clamp unit, a second clamp unit and a first supporting piece which are arranged on one side surface of the supporting platform, the supporting platform is provided with receding welding openings, the first clamp units are arranged at the receding welding openings in a one-to-one correspondence mode and used for pre-positioning and fixing the limiting beams, and the first supporting pieces are used for supporting the square frame. Each first supporting piece comprises a supporting block and at least one first heightening piece arranged below the supporting block, and the number of the first heightening pieces in different first supporting pieces is the same or different; and the second clamp unit is used for pressing the outer cover plate downwards for pre-positioning. The anti-deformation welding tool for the large-size battery box body cover plate is ingenious in structural design, deformation prevention during welding of the large-size cover plate can be effectively achieved, and meanwhile welding of a battery box body is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery frame welding, in particular to an anti-deformation welding tool for a large-size battery box cover. Background Art

[0002] Welding fixtures are often used to fix and clamp the workpieces to be welded, so as to facilitate stable clamping during the welding process; however, there are currently no suitable welding fixtures for large-size battery box covers, the reasons are:

[0003] After several fixed limiting beams used to fix the outer edges of the batteries inside the large-sized battery box are welded to one side of the cover, the cover removed from the welding tooling often undergoes severe deformation due to thermal expansion and contraction of multiple welds. The entire cover becomes an arc-shaped sheet instead of a flat surface, which seriously affects the sealing and safety requirements of the battery box during actual use.

[0004] In view of this, the applicant has invented an anti-deformation welding tool for large-size battery case covers with an ingenious structural design, which can effectively prevent deformation during welding of large-size covers and realize welding of battery cases. Utility Model Content

[0005] The utility model aims to provide a deformation-proof welding tool for a large-sized battery box cover to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A deformation-proof welding tool for a large-size battery case cover, the battery case comprising an outer cover, a square frame arranged on the outer edge of the welding non-processed side of the outer cover, and a plurality of fixed limiting beams arranged on the inner side of the square frame and on the same side of the square frame, the welding tool can pre-position the battery case and cooperate with external welding equipment to weld a plurality of fixed limiting beams to the outer cover, comprising a support platform and a plurality of first clamp units, a plurality of second clamp units and a plurality of first support members, all of which are arranged on a side of the support plane; the support platform is provided with a plurality of clearance welding openings, a plurality of first clamp units are arranged one by one at the plurality of the clearance welding openings, and are used to pre-position the fixed limiting beams, a plurality of the first support members are used to support the square frame, each of the first support members comprises a support block and at least one first spacer arranged below the support block, and the number of first spacers in different first support members is the same or different; the second clamp unit is used to press the outer cover downward for pre-positioning.

[0008] As a further improvement, the second clamp unit includes a second clamping portion and a second clamping cylinder, and the second clamping cylinder is used to press the outer cover plate downward along the outer edge of the side surface of the outer cover plate to pre-position the outer cover plate.

[0009] As a further improvement, the welding tooling can be detachably installed on the positioner, and the first fixture unit includes a fixed beam limit plate, a first mounting plate, a first clamping member and a first pushing cylinder. The first pushing cylinder is fixed to the welding processing side of the outer cover plate through the first mounting plate, and the first mounting plate is connected to the support platform; the push rod portion of the first pushing cylinder is drivingly connected to the fixed beam limit plate, and the first clamping member is arranged on the fixed beam limit plate for clamping and positioning the fixed limit beam. The first clamping member passes through the yielding welding opening, and is exposed from the support platform and retracted into the welding opening under the push and contraction of the first pushing cylinder respectively.

[0010] As a further improvement, at least one second spacer is further provided between the first clamping member and the fixed beam limiting plate, and the first clamping member and the second spacer are detachably provided on the fixed beam limiting plate by bolts.

[0011] As a further improvement, it further includes a third clamping unit, which includes a second pushing cylinder, a second clamping piece fixed on the push rod of the second pushing cylinder, and a frame fixing block fixed on the supporting platform, and the second clamping piece and the frame fixing block are arranged opposite to each other for clamping the square frame.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The anti-deformation welding tooling for a large-size battery box cover adopts a fixing method that uses the bottom surface of the square frame as the welding working surface, and cooperates with the method that the height of the first support member can be adjusted by different numbers of spacers at different positions. It can effectively realize the anti-compensation in advance for the deformation problem that may occur in the plane of the bottom surface of the square frame under the conventional welding method, and the square frame is pre-bent during welding by first support members of different heights, so that the bottom surface of the square frame and the battery box cover after the final welding are kept level as a whole, ensuring the sealing of the battery box during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the battery box that needs to be welded in the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of a large-sized battery box cover after the battery box is fixed with an anti-deformation welding tooling;

[0016] Figure 3This is a schematic diagram of the structure of an anti-deformation welding tool for a large-size battery box cover of the utility model;

[0017] Figure 4 This is a schematic diagram showing the structure of the lower surface of an anti-deformation welding tool for a large-size battery box cover of the utility model;

[0018] Figure 5 for Figure 3 An enlarged schematic diagram of the structure of the first clamp unit is shown in FIG.

[0019] In the figure: 10, battery box; 11, outer cover; 12, square frame; 13, fixed limit beam; 20, support platform; 21, make way welding opening; 30, first clamp unit; 31, fixed beam limit plate; 32, first mounting plate; 33, first clamping member; 34, first pushing cylinder; 35, second spacer; 40, second clamp unit; 41, second clamping part; 42, second clamping cylinder; 50, first support member; 51, support block; 52, first spacer; 60, third clamp unit; 61, second pushing cylinder; 62, second clamping member; 63, frame fixing block. DETAILED DESCRIPTION

[0020] 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.

[0021] In the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0024] Please refer to Figures 1 to 4 , a deformation-proof welding tool for a cover of a large-size battery box 10, the battery box 10 includes an outer cover 11, a square frame 12 arranged on the outer edge of the welding non-processed side of the outer cover 11, and a plurality of fixed limiting beams 13 arranged on the inner side of the square frame 12 and located on the same side of the square frame 12, the fixed limiting beam 13 has an outer shape that matches the bottom or top surface of the battery to be positioned in the battery box 10 to play a positioning and clamping role to prevent the battery from shaking during transportation or use, the welding tool can pre-position the battery box 10 and cooperate with external welding equipment to weld a plurality of fixed limiting beams 13 to the outer cover 11, including a support platform 20 and a plurality of fixed limiting beams 13 each arranged on one side of the support plane A first clamp unit 30, a plurality of second clamp units 40 and a plurality of first support members 50; the support platform 20 is provided with a plurality of clearance welding openings 21 for a welding robot to extend into and weld the fixed limiting beam 13; a plurality of first clamp units 30 are arranged one by one at the plurality of clearance welding openings 21 for pre-positioning the fixed limiting beam 13; a plurality of first support members 50 are used to support the square frame 12; each of the first support members 50 includes a support block 51 and at least one first spacer 52 arranged under the support block 51; the number of first spacers 52 in different first support members 50 is the same or different; the second clamp unit 40 is used to press the outer cover plate 11 downward for pre-positioning.

[0025] The overall method of fixing the bottom surface of the square frame 12 as the working surface for welding, combined with the method of adjusting the height of the first support member 50 by different numbers of spacers at different positions, can effectively realize the advance counter-compensation for the deformation problem that may occur in the plane of the bottom surface of the square frame 12 under conventional welding methods, and the square frame 12 is bent in advance during welding by first support members 50 of different heights, so that the bottom surface of the square frame 12 and the cover of the battery box 10 after the final welding remain level as a whole, ensuring the sealing of the battery box 10 during use.

[0026] Please refer to Figure 2The second clamp unit 40 includes a second clamping portion 41 and a second clamping cylinder 42. The second clamping cylinder is used to press the outer cover plate 11 downward along the outer edge of the side of the outer cover plate 11 to pre-position the outer cover plate 11. The first support member 50 is arranged in two rows, and its position can correspond to the second clamping portion 41 up and down. By adopting this fixed position and fixing method, the battery box 10 cover plate can be effectively and stably fixed as a whole.

[0027] Please refer to Figures 3 to 5 The welding tool can be detachably installed on the positioner. The first clamp unit 30 includes a fixed beam limit plate 31, a first mounting plate 32, a first clamping member 33 and a first pushing cylinder 34. The first pushing cylinder 34 is fixed to the welding processing side of the outer cover plate 11 through the first mounting plate 32. The first mounting plate 32 is connected to the support platform 20. The first mounting plate 32 includes several bending portions, which are used to connect with the support platform 20 and the first pushing cylinder 34 respectively; the push rod portion of the first pushing cylinder 34 is drivingly connected to the fixed beam limit plate 31, and the first clamping member 33 is arranged on the fixed beam limit plate 31 to clamp and position the fixed limit beam 13. The first clamping member 33 passes through the yielding welding opening 21, and is exposed from the support platform 20 and retracted into the welding opening under the push and contraction of the first pushing cylinder 34.

[0028] Through the structural design of the first clamp unit 30, the fixed limiting beam 13 can be effectively pre-fixed. After pre-fixation, the first pushing cylinder 34 contracts to make way for the fixed limiting beam 13 to move into the making way welding opening 21, so as to better fix the outer cover plate 11 and the square frame 12 to avoid collision. After the outer cover plate 11 and the square frame 12 are fixed and are ready to be welded, the first pushing cylinder 34 is pushed out to move the fixed limiting beam 13 to the surface of the outer cover plate 11, and then welding is performed by the welding robot. The entire structural design is ingenious and compact, which can effectively achieve efficient welding of the fixed limiting beam 13 with a low defective rate.

[0029] Please refer to Figure 5 At least one second spacer 35 is further provided between the first clamping member 33 and the fixed beam limit plate 31, and the first clamping member 33 and the second spacer 35 are detachably provided on the fixed beam limit plate 31 by bolts. By replacing the number of the second spacers 35, the fixed limit beams 13 of various widths can be effectively fixed, thereby increasing the applicability of the welding tooling.

[0030] Please refer to Figure 3, further comprising a third fixture unit 60, wherein the third fixture unit 60 includes a second pushing cylinder 61, a second clamping member 62 fixed on the push rod of the second pushing cylinder 61, and a frame fixing block 63 fixed on the support platform 20. The second clamping member 62 and the frame fixing block 63 are arranged opposite to each other for clamping the square frame 12. The structure of the third fixture unit 60 can effectively clamp the side surface of the square frame 12 to ensure that it will not fall off or shift from the first support member 50 during the welding process, thereby affecting the flatness of the overall product and ensuring the stability and reliability of the welding process.

[0031] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A deformation-preventing welding tooling for a large-size battery box cover plate. The battery box (10) includes an outer cover plate (11), a square frame (12) arranged on the outer edge of the welding non-machined side of the outer cover plate (11), and a plurality of fixed limiting beams (13) arranged inside the square frame (12) and on the same side of the square frame (12). The welding tooling can pre-position the battery box (10) and cooperate with an external welding device to weld the plurality of fixed limiting beams (13) onto the outer cover plate (11). It is characterized in that: The invention comprises a support platform (20) and a plurality of first clamp units (30), a plurality of second clamp units (40) and a plurality of first support members (50) all arranged on a side surface of a support plane; the support platform (20) is provided with a plurality of clearance welding openings (21); a plurality of first clamp units (30) are arranged one by one at the plurality of clearance welding openings (21) for pre-positioning and fixing a limiting beam (13); a plurality of first support members (50) are used to support the square frame (12); each of the first support members (50) comprises a support block (51) and at least one first spacer (52) arranged below the support block (51); the number of first spacers (52) in different first support members (50) is the same or different; the second clamp unit (40) is used to press the outer cover plate (11) downwards for pre-positioning.

2. The anti-deformation welding tooling for the large-size battery box cover plate according to claim 1, characterized in that: The second clamping unit (40) comprises a second clamping portion (41) and a second clamping cylinder (42), wherein the second clamping cylinder is used to press the outer cover plate (11) downward along the outer edge of the side surface of the outer cover plate (11) to pre-position the outer cover plate (11).

3. The anti-deformation welding tooling for the large-size battery box cover plate according to claim 1, characterized in that: The welding tool can be detachably mounted on the positioner, and the first clamp unit (30) comprises a fixed beam limit plate (31), a first mounting plate (32), a first clamping member (33) and a first pushing cylinder (34); the first pushing cylinder (34) is fixed to the welding processing side of the outer cover plate (11) through the first mounting plate (32), and the first mounting plate (32) is connected to the support platform (20); the push rod portion of the first pushing cylinder (34) is drivingly connected to the fixed beam limit plate (31), and the first clamping member (33) is arranged on the fixed beam limit plate (31) for clamping and positioning the fixed limit beam (13); the first clamping member (33) passes through the yielding welding opening (21), and is exposed from the support platform (20) and retracted into the welding opening under the push and retraction of the first pushing cylinder (34), respectively.

4. The anti-deformation welding tooling for the large-size battery box cover plate according to claim 3, wherein: At least one second spacer (35) is further provided between the first clamping member (33) and the fixed beam limiting plate (31), and the first clamping member (33) and the second spacer (35) are detachably provided on the fixed beam limiting plate (31) by means of bolts.

5. The anti-deformation welding tooling for the large-size battery box cover plate according to claim 1, characterized in that: The third clamp unit (60) further comprises a second pushing cylinder (61), a second clamping member (62) fixed on a push rod of the second pushing cylinder (61), and a frame fixing block (63) fixed on the supporting platform (20), wherein the second clamping member (62) and the frame fixing block (63) are arranged opposite to each other and are used for clamping the square frame (12).

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