Online laser welding guide mechanism for battery tray cross beam rolling

Abstract

The utility model relates to a battery tray cross beam rolling online laser welding guiding mechanism, and relates to the technical field of part welding forming, the battery tray cross beam rolling online laser welding guiding mechanism comprises a rolling device and two welding guns arranged between the rolling device in a spaced mode, and the rolling device comprises a first bending mechanism, a second bending mechanism and a third bending mechanism; the two welding guns are arranged between the first bending mechanism and the second bending mechanism and between the second bending mechanism and the third bending mechanism correspondingly, the rolling device comprises a plurality of supports, supporting rollers are rotationally installed on the supports, and abutting mechanisms used for abutting against the cross beam to enable the cross beam to be continuously bent are installed on the supporting rollers. The welding gun is provided with a laser generator and an electric arc generator which can achieve hybrid welding of the cross beam. The cross beam of the automobile battery tray can be integrally formed, meanwhile, a laser and semiconductor combined welding mode is adopted in the welding forming process of the cross beam, the welding quality can be improved, and therefore the structural strength of the formed cross beam is enhanced, and the service life of the cross beam is prolonged.

Description

TECHNICAL FIELD

[0001] The application relates to the field of part welding forming technology, in particular to a battery tray cross beam rolling online laser welding guide mechanism. BACKGROUND

[0002] The automobile battery tray cross beam is an important component in the battery pack tray, mainly used for supporting and fixing the battery pack to ensure its stability and safety during transportation and installation. In order to meet the load requirements and strength requirements of the automobile tray, the cross beam, as the main supporting component, generally adopts zinc alloy material. In order to make the cross beam have sufficient mechanical properties and be convenient for fixed connection with other parts, the cross beam is mainly made into a tubular structure with a T-shaped cross section by rolling and welding at present.

[0003] However, due to the strong reflectivity of zinc alloy material, the welding position is often not firm enough, and more zinc vapor is easily generated, reducing the welding quality. At the same time, the cross beam forming equipment in the prior art is often a plurality of staggered bending mechanisms and welding mechanisms, which cannot make the cross beam integrally formed. The workpiece needs to be transferred to the next process for processing after the previous process is completed, which is very cumbersome and consumes manpower and material resources. CONTENT OF THE INVENTION

[0004] In order to make the automobile tray cross beam integrally formed during manufacturing, and have a stable welding structure, thereby improving the structural strength and service life of the whole cross beam, the application provides a battery tray cross beam rolling online laser welding guide mechanism.

[0005] The battery tray cross beam rolling online laser welding guide mechanism provided by the application adopts the following technical scheme:

[0006] A battery tray cross beam rolling online laser welding guide mechanism for integrally forming a battery tray cross beam, comprising a rolling device for gradually rolling and forming the cross beam, and two welding guns arranged at intervals between the rolling device, the rolling device comprising a bending mechanism one, a bending mechanism two and a bending mechanism three, the two welding guns being arranged between the bending mechanism one and the bending mechanism two and between the bending mechanism two and the bending mechanism three, respectively, the rolling device comprising a plurality of supports arranged at intervals, a support roller for jacking up the cross beam being rotatably installed on each support, and a clamping mechanism for clamping the cross beam to continuously bend the cross beam being installed on the support roller, and a laser generator and an electric arc generator for realizing composite welding of the cross beam being installed on the welding gun.

[0007] Optionally, the forward direction of the cross beam is specified as the forward direction, and the opposite direction is the backward direction; the left side of the cross beam along the forward direction is specified as the left direction, and the opposite direction is the right direction.

[0008] The bending mechanism one comprises a plurality of bending frames one integrally connected to the top side of the support frame in the forward direction, a top roller one rotationally arranged on the bending frame one, and a left roller one and a right roller one rotationally arranged on the left side and the right side of the bending frame one respectively, the inner side of the left roller one and the right roller one approaching each other is integrally connected with a left bending roller one and a right bending roller one respectively, the left side of the top roller one is integrally provided with a conical roller one, and the left side of the conical roller one coincides with the middle part of the bending frame one in the width direction, the taper of the right bending roller one and the conical roller one in the forward direction decreases in turn, the left bending roller one is coaxial with the top roller one, and the end of the left bending roller one approaching the top roller one always abuts against the top roller one.

[0009] Optionally, the side of the left bending roller one approaching the top roller one is integrally connected with a hemming ring for increasing the welding area of the beam welding position, and the two ends of the hemming ring on the bending frame one in the axial direction always coincide with the end edge of the top roller one and the left bending roller one.

[0010] Optionally, the bending mechanism two comprises a plurality of bending frames two arranged in the forward direction, two side rollers two symmetrically rotationally arranged on the left and right sides of the bending frame two, and a conical roller pressing step integrally connected to the right end of the side roller two on the left side, the taper of the roller pressing step on the bending frame two in the forward direction decreases in turn, a top roller two rotationally arranged on the top of the beam on the bending frame two, the right side of the top roller two parallel to the middle part of the bending frame two in the width direction, and the right side abutting against the beam, the top roller two is a conical structure, and the left side is the end with smaller cross-sectional area.

[0011] Optionally, the bending mechanism three comprises a plurality of third bending frames arranged in the forward direction and a top roller three rotationally arranged on the third bending frame, the middle part of the top roller three in the axial direction is provided with an extrusion ring groove, and the right side of the top roller three in the extrusion ring groove is integrally connected with a conical roller three, the taper of the conical roller three on the third bending frame in the forward direction decreases in turn.

[0012] Optionally, the abutting mechanism comprises a plurality of guide columns fixedly installed on the inner side of the support frame and an abutting ring sleeve slidingly sleeved on the support roller, a plurality of guide columns are arranged in the circumferential direction of the support roller, and the abutting ring sleeve and a plurality of abutting ring sleeves are slidingly connected, a gas cylinder is installed on the inner side of the support frame, and the distal end of the gas cylinder is fixedly connected with the abutting ring sleeve.

[0013] In summary, the present application has at least one of the following beneficial technical effects:

[0014] 1. The application can laser and semiconductor composite welding of the weld when the beam is formed, effectively solve the problem of welding not firm caused by reflection and zinc gasification, improve the welding quality and the structure strength of the beam after forming;

[0015] 2. The application makes the beam deform slowly by continuously bending the beam in the beam forming process, avoids the problem of cracks and uneven deformation of the beam bending position caused by one-time forming, improves the structural performance of the beam, and prolongs the service life;

[0016] 3. The application increases the welding area of the beam welding position when welding, so that the welding is more firm. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the battery tray beam rolling online laser welding guide mechanism of the application.

[0018] Figure 2 It is Figure 1 the enlarged view of A in

[0019] Figure 3 It is the overall view of the bending mechanism one of the battery tray beam rolling online laser welding guide mechanism of the application.

[0020] Figure 4 It is the shape view of the plate after passing through the bending mechanism one.

[0021] Figure 5 It is the overall view of the bending mechanism two of the battery tray beam rolling online laser welding guide mechanism of the application.

[0022] Figure 6 The shape view of the plate after passing through the bending mechanism two.

[0023] Figure 7 It is the overall view of the bending mechanism three of the battery tray beam rolling online laser welding guide mechanism of the application.

[0024] Figure 8 The shape view of the plate after passing through the bending mechanism three.

[0025] Explanation of reference numerals: 1, rolling device; 11, support; 12, support roller; 2, welding gun; 3, bending mechanism one; 31, bending frame one; 32, top roller one; 321, conical roller one; 33, left roller one; 331, left bending roller one; 34, right roller one; 341, right bending roller one; 35, crimping ring; 4, bending mechanism two; 41, bending frame two; 42, side roller two; 421, rolling step; 43, top roller two; 5, bending mechanism three; 51, bending frame three; 52, top roller three; 521, extrusion ring groove; 53, conical roller three; 6, abutting mechanism; 61, abutting ring sleeve; 62, guide column; 63, air cylinder. DETAILED DESCRIPTION

[0026] The embodiment of the present application discloses a battery tray crossbeam rolling online laser welding guide mechanism.

[0027] In the present application, the crossbeam is rolled by a plate into a pipe with T-shaped cross section. The plate enters from one end of the guide mechanism, is rolled and formed in the axial movement, and is guided out from the other end of the guide mechanism.

[0028] Therefore, the forward direction of the crossbeam is specified as the front direction, and the opposite direction is the rear direction; the left side of the crossbeam in the forward direction is specified as the left direction, and the opposite direction is the right direction.

[0029] Reference Figure 1 and Figure 2 A battery tray crossbeam rolling online laser welding guide mechanism comprises a rolling device 1 for gradually bending a plate into a T-shaped pipe and finally forming a crossbeam, and a plurality of welding guns 2 arranged between the rolling devices 1. In the present application, the rolling device 1 comprises a bending mechanism one 3, a bending mechanism two 4 and a bending mechanism three 5 which are coaxial and sequentially connected. The welding gun 2 has two, and the two welding guns 2 are arranged between the bending mechanism one 3 and the bending mechanism two 4 and between the bending mechanism two 4 and the bending mechanism three 5.

[0030] The welding gun 2 is provided with an electric arc generator and a laser generator inside, which can combine the laser generator and the electric arc generator to perform laser and semiconductor joint welding on the joint of the crossbeam, so as to prevent reflection when welding due to the zinc alloy material of the crossbeam, and finally cause the welding position structure to be not firm enough, affecting the welding quality of the crossbeam.

[0031] Reference Figure 1 and Figure 2Further, the rolling device 1 further comprises a plurality of supports 11 arranged at intervals, and the top end of each of the supports 11 is rotatably connected with a support roller 12 for bearing the crossbeam. The axis of each of the support rollers 12 arranged on the supports 11 is located on the same horizontal plane, and some or all of the support rollers 12 are connected with driving motors so as to drive the crossbeam to move along the axial direction. The support 11 is provided with a pressing mechanism 6 for pushing the plate along the axial direction of the support roller 12 so as to be bent smoothly and continuously.

[0032] With reference to Figure 3 Specifically, the pressing mechanism 6 comprises a plurality of guide columns 62 fixedly installed on one side of the support 11 and a pressing ring 61 slidably sleeved on the support roller 12. The pressing ring 61 abuts against the side of the plate which is not bent along the width direction so as to push the plate to move along the width direction and realize continuous bending. Each of the guide columns 62 is arranged along the circumferential direction of the support roller 12, and the inner side of the support 11 is provided with a pneumatic cylinder 63 for driving the pressing ring 61 to move, and the end of the pneumatic cylinder 63 is fixedly connected with the pressing ring 61.

[0033] In order to ensure that the pressing ring 61 is uniformly stressed, the pneumatic cylinder 63 is designed to have multiple cylinders, and the cylinders are arranged along the circumferential direction of the support roller 12.

[0034] With reference to Figure 3 and Figure 4 Specifically, the bending mechanism 1 3 comprises a plurality of bending frames 1 31 connected to the top end of the supports 1 1, a top roller 1 32 rotatably arranged on the top end of the bending frame 1 31, and a left roller 1 33 and a right roller 1 34 rotatably arranged on the two inner sides along the width direction of the bending frame 1 31, respectively, and the crossbeam is movably clamped between the top roller 1 32, the support roller 1 2, the left roller 1 33 and the right roller 1 34. The axis of the left roller 1 33 and the right roller 1 34 is arranged along the horizontal direction, and the left bending roller 1 331 and the right bending roller 1 341 are integrally connected on the side close to each other, respectively.

[0035] The right bending roller 1 341 is a conical structure for gradually bending the plate by 90°. The left side of the top roller is integrally connected with a conical roller 1 321, and the left end of the conical roller 1 321 coincides with the middle part of the bending frame 1 31 along the width direction. When the right side of the crossbeam is lifted up by the right roller 1 34 and bent, the conical roller 1 321 further bends the bent surface on the right side by 90°.

[0036] After the plate bent twice is pressed by the left bending roller 1 331, the end of the crossbeam bent up abuts against the upper side of the crossbeam. Finally, the welding gun 2 located between the bending mechanism 1 3 and the bending mechanism 2 4 welds the abutting seam to form a stable structure.

[0037] It should be noted that the taper of the rolling step 421 and the taper of the taper roller 321 in the bending mechanism 3 gradually decreases along the front direction, which is designed to gradually bend the beam when the beam passes through the bending frames 31.

[0038] This design can avoid the problem of excessive internal stress in the beam caused by one-time bending forming, which can cause the internal structure to be disordered and the structural strength of the beam to be reduced. At the same time, multiple bending can also make the beam slowly deform, so that the structural stability of the formed beam is higher.

[0039] Referring to Figure 3 and Figure 4 Further, the left bending roller 331 is integrally connected with the edge rolling ring 35 near the top roller 32. The cross-sectional size of the edge rolling ring 35 on the bending frame 31 gradually increases along the front direction, and the two end edges are always coincident with the end edges of the top roller 32 and the left bending roller 331 along the axis. The function of the edge rolling ring 35 is to form an edge rolling structure at the welding position, increase the welding area of the beam, and make the welding more firm.

[0040] Referring to Figure 5 and Figure 6 Specifically, the bending mechanism 4 includes a plurality of bending frames 41 arranged at intervals, and two side rollers 42 are symmetrically and rotatably installed on the left and right sides of the bending frame 42. The right end of the side roller 42 on the left side is integrally connected with the rolling step 421 below the beam, which is used to bend the right side of the beam. Similarly, the taper of the rolling step 421 on the bending frame 42 gradually decreases along the front direction. In this structure, the side roller 42 on the right side of the second positioning frame plays a role in abutting and limiting the beam.

[0041] Further, the top roller 43 is rotatably connected to the top of the bending frame 42. The right side of the top roller 43 along the horizontal direction is parallel to the middle part of the bending frame 42 along the width direction, and the left side of the top roller 43 is a conical structure. The function of the top roller 43 is to further bend the bending edge on the left side of the beam, and to make the bending right angle edge parallel to the middle part of the beam, so as to form a stable weld after the second welding.

[0042] Referring to Figure 7 and Figure 8 Specifically, the bending mechanism 5 includes a plurality of third bending frames arranged at intervals along the front direction, and a top roller 52 rotatably arranged on the top of the third bending frame. The middle part of the top roller 52 along the axis direction is provided with an extrusion ring groove 521, and the right side of the extrusion ring groove 521 is provided with a taper roller 53 which is biased to the extrusion ring groove 521. Similarly, the taper of the taper roller 53 on the third bending frame gradually decreases along the front direction.

[0043] When the crossbeam passes through the third bending frames in sequence, the right end of the crossbeam is pressed again to the east, and the left end is abutted, so that the crossbeam with T-shaped cross section is formed.

[0044] The implementation principle of the online laser welding guide mechanism for the battery tray crossbeam rolling is as follows:

[0045] Firstly, the right bending roller 341, the top roller 32 and the left bending roller 331 on the bending mechanism 3 bend the plate to be processed by 90 degrees, so that the right end of the bent plate abuts against the upper side, and then the welding gun 2 between the bending mechanism 1 and the bending mechanism 2 welds the abutting position.

[0046] Then, the side rollers 42 on the left side of the bending frames 41 and the top roller 43 on the top of the bending frames 41 bend the right side of the plate by 90 degrees in sequence, so that the left end of the plate abuts against the protruding end of the plate in the middle. At this time, the welding gun 2 between the bending mechanism 2 and the bending mechanism 3 welds the weld.

[0047] Finally, the right angle edge of the plate is continuously rolled by the top roller 52 on the bending mechanism 3, so that the plate becomes a T-shaped crossbeam.

[0048] The above are the preferred embodiments of the present application, but do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A battery tray crossbeam roll forming online laser welding guide mechanism for the integrated forming of a battery tray crossbeam, comprising a roll forming device (1) for gradually roll forming the crossbeam and two welding torches (2) arranged at intervals between the roll forming device (1), characterized in that: The rolling device (1) comprises a bending mechanism one (3), a bending mechanism two (4) and a bending mechanism three (5), two welding torches (2) are arranged between the bending mechanism one (3) and the bending mechanism two (4) and the bending mechanism two (4) and the bending mechanism three (5) respectively, the rolling device (1) comprises a plurality of interval arranged supports (11), the support (11) is rotatably installed with a support roller (12) for jacking the cross beam, and the support roller (12) is installed with a abutting mechanism (6) for abutting the cross beam to make it continuously bend, the welding torch (2) is installed with a laser generator and an electric arc generator which can realize the composite welding of the cross beam.

2. A battery tray cross member roll-on laser weld guide mechanism according to claim 1, wherein: The direction of the cross beam running is forward, and the opposite direction is backward; the left side of the cross beam along the running direction is left, and the opposite direction is right; The bending mechanism one (3) comprises a plurality of bending frames one (31) integrally connected to the top side of the support (11) along the forward direction, a top roller one (32) rotatably arranged on the bending frame one (31), and two left rollers one (33) and right rollers one (34) rotatably arranged on the left side and the right side of the bending frame one (31) respectively, the inner side of the left roller one (33) and the right roller one (34) close to each other is integrally connected with a left bending roller one (331) and a right bending roller one (341) respectively, the left side of the top roller one (32) is integrally provided with a conical roller one (321), and the left side of the conical roller one (321) coincides with the middle of the bending frame one (31) along the width direction, the taper of a plurality of right bending roller one (341) and conical roller one (321) along the forward direction decreases in turn, the left bending roller one (331) is coaxial with the top roller one (32), and the end of the left bending roller one (331) close to the top roller one (32) always abuts against the top roller one (32).

3. A battery tray crossmember roll-on laser weld guide mechanism according to claim 2, wherein: The side of the left bending roller one (331) close to the top roller one (32) is integrally connected with a hemming ring (35) for increasing the welding area of the cross beam welding position, and the two ends of the hemming ring (35) on a plurality of bending frames one (31) along the axial direction always coincide with the end edge of the top roller one (32) and the left bending roller one (331).

4. A battery tray crossmember roll-on laser weld guide mechanism according to claim 3, wherein: The bending mechanism two (4) comprises a plurality of bending frames two (41) arranged at intervals along the forward direction, two side rollers two (42) are symmetrically rotatably installed on the left and right sides of the bending frame two (41), and the right end of the side roller two (42) on the left side is integrally connected with a conical rolling step (421), the taper of a plurality of rolling steps (421) on a plurality of bending frames two (41) along the forward direction decreases in turn, a top roller two (43) is rotatably installed on the top of the cross beam on the bending frame two (41), the right side of the top roller two (43) is parallel to the middle of the bending frame two (41) along the width direction, and the right side abuts against the cross beam, the top roller two (43) is a conical structure, and the left side is the end with smaller cross-sectional area.

5. A battery tray crossmember roll-on laser weld guide mechanism according to claim 4, wherein: The bending mechanism three (5) comprises third bending frames arranged at intervals in the front direction and a top roller three (52) rotatably arranged on the third bending frames, the top roller three (52) is provided with an extrusion ring groove (521) in the middle of the axial direction, and the top roller three (52) is integrally connected with a conical roller three (53) on the right side of the extrusion ring groove (521), the taper of the conical roller three (53) on the third bending frames gradually decreases in the front direction.

6. A battery tray crossmember roll-on laser weld guide mechanism according to claim 1, wherein: The abutting mechanism (6) comprises a plurality of guide columns (62) fixedly installed on the inner side of the support frame (11) and an abutting ring sleeve (61) slidably sleeved on the support roller (12), a plurality of guide columns (62) are arranged in the circumferential direction of the support roller (12), and the abutting ring sleeve (61) is slidably connected with a plurality of abutting ring sleeves (61), a gas cylinder (63) is installed on the inner side of the support frame (11), and the distal end of the telescopic rod of the gas cylinder (63) is fixedly connected with the abutting ring sleeve (61).

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