Multi-point spot welder

Abstract

The present invention provides a multi-point spot welder, which includes a frame, a spot welding mechanism, a cooling pipeline, and a cooling platform. The multi-point spot welder provided by the present invention is provided with a frame, and a spot welding mechanism is arranged on the frame, and spot welding processing can be performed on a square metal sheet on the cooling platform of the frame through a spot welding end; the cooling platform can drive the cooling medium in the cooling cylinder cavity and the cooling medium in two cooling pipelines to exchange when the rotating part rotates through the cooling cylinder cavity and the rotating part located on the cooling cylinder cavity; the cooling pipeline can circulate the cooling medium, and while performing spot welding on the central positions of the four sides of multiple layers of square metal sheets by rotating the cooling platform, the rotating part can drive the cooling medium in the cooling cylinder cavity and the cooling medium in two cooling pipelines to exchange, which can accelerate the cooling speed of the solder joints, with good adaptability and good practicability.

Description

Technical Field

[0001] The present invention belongs to the technical field of auxiliary welding, and particularly relates to a multi-point spot welder. Background Art

[0002] The welding process is a processing technology. Welding, also known as fusion welding, is a manufacturing process and technology for joining metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. It is necessary to locally heat the welding area to the melting state, that is, to perform welding in a liquid state. A spot welder is a mechanical device used for welding metal sheets or pipes. During spot welding, the workpieces are first pressed to be in close contact, and at the action of resistance heat, the contact area of the workpieces melts. After the power is cut off, the pressure is maintained so that the fusion nucleus cools and solidifies under the action of pressure to form a solder joint.

[0003] In the prior art, when welding multiple layers of square metal sheets, the multiple layers of square metal sheets are horizontally placed on a welding platform, and spot welding is performed at the central positions of the four sides of the multiple layers of square metal sheets. Usually, a welding torch is arranged above the welding platform and can move in the vertical direction, and then the welding platform is rotated to perform spot welding at the central positions of the four sides of the multiple layers of square metal sheets. However, since the welding platform is in a working state for a long time and has a high temperature, the cooling speed of the solder joints is slow, the strength and stability of the solder joints will decrease, and the adaptability and practicability are poor. Summary of the Invention

[0004] An embodiment of the present invention provides a multi-point spot welder, aiming to solve the problem that the existing welding platform has a high temperature during long-term operation and the cooling speed of the solder joints is slow.

[0005] To achieve the above object, the technical solution adopted by the present invention is: providing a multi-point spot welder, including:

[0006] A frame;

[0007] A spot welding mechanism, arranged on the frame, and the spot welding mechanism has a spot welding end;

[0008] Two cooling pipelines, both of the two cooling pipelines are arranged on the frame, and each cooling pipeline circulates a cooling medium;

[0009] A cooling platform, located below the spot welding end, the cooling platform has a cooling cylinder cavity with an open top end and a rotating part located on the cooling cylinder cavity. The cooling cylinder cavity is communicated with the two cooling pipelines. The rotating part extends into the cooling cylinder cavity, and the rotating part is used for driving the cooling medium in the cooling cylinder cavity and the cooling medium in the two cooling pipelines to exchange when rotating; a spot welding position for placing multiple layers of square metal sheets and corresponding to the spot welding end is arranged at the top end of the rotating part.

[0010] In a possible implementation, the direction in which the spot welding end extends outward from the frame is set as the first direction, and the direction horizontal and perpendicular to the first direction is the second direction;

[0011] The multi-point spot welder further includes an adjusting mechanism, the adjusting mechanism is arranged on the frame, and the adjusting mechanism includes:

[0012] A fixing frame, fixedly arranged on the frame;

[0013] A telescopic structure, the fixed end of the telescopic structure is fixedly arranged on the fixing frame, the telescopic end of the telescopic structure extends out along the first direction, and a connection hole for installing the cooling platform is arranged on the telescopic end of the telescopic structure, and the axis of the connection hole is arranged in the vertical direction;

[0014] An auxiliary support plate, arranged on the fixing frame, and an auxiliary support hole for the telescopic end of the telescopic structure to pass through is arranged on the auxiliary support plate.

[0015] In a possible implementation, the cooling platform includes:

[0016] A connecting sleeve, inserted into the connection hole and detachably connected to the connection hole;

[0017] A cooling cylinder, fixedly arranged at the top end of the connecting sleeve, and the inner cavity of the cooling cylinder is the cooling cylinder cavity;

[0018] A rotating impeller, rotatably arranged in the cooling cylinder cavity, the rotation axis of the rotating impeller is collinear with the axis of the cooling cylinder cavity, a plurality of blades are arranged on the rotating impeller, the plurality of blades are annularly spaced along the rotation axis of the rotating impeller, one end of each blade is connected to the rotating impeller, and the other end extends radially along the cooling cylinder cavity and abuts against the inner wall of the cooling cylinder cavity;

[0019] A connecting cover plate, arranged at the top end of the rotating impeller, and the connecting cover plate covers the top end of the cooling cylinder;

[0020] A driving structure, arranged at the bottom end of the connecting sleeve and power-connected to the rotating impeller and the connecting cover plate.

[0021] In a possible implementation, a connecting piece is further arranged on the cooling platform, the connecting piece is arranged at the top end of the connecting cover plate and is detachably connected to the connecting cover plate, a connecting groove with an open top end is arranged at the top end of the connecting piece, the connecting groove is the spot welding position, and the connecting piece, the connecting cover plate and the rotating impeller together form the rotating part.

[0022] In a possible implementation, each of the blades has an arc surface, which is used to drive the cooling medium in the cooling cylinder cavity and the two cooling pipelines to exchange when the driving structure drives the rotating impeller to rotate.

[0023] In a possible implementation, the spot welding mechanism includes:

[0024] Two articulated blocks are provided, and the two articulated blocks are arranged at intervals along the second direction. Each of the articulated blocks is fixedly connected to the frame;

[0025] An articulated cantilever, one end of the articulated cantilever is articulated with the two articulated blocks, the articulation axis is arranged in the second direction, and the other end of the articulated cantilever extends outwards;

[0026] A welding copper bar is arranged at the extending end of the articulated cantilever and is detachably connected to the extending end of the articulated cantilever. The welding copper bar is arranged at an interval from the spot welding position in the vertical direction. The welding copper bar is used to rotate up and down with the articulated cantilever to perform spot welding on the multi-layer square metal sheets in the spot welding position. The welding copper bar is the spot welding end;

[0027] A driver is arranged on the frame and is used to drive the articulated cantilever to rotate up and down.

[0028] In a possible implementation, the connecting piece is made of brass.

[0029] In this implementation, compared with the prior art, a frame is provided, and a spot welding mechanism is arranged on the frame. Spot welding processing can be performed on the square metal sheets on the cooling platform of the frame through the spot welding end; the cooling platform can drive the cooling medium in the cooling cylinder cavity and the cooling medium in the two cooling pipelines to exchange when the rotating part rotates through the cooling cylinder cavity and the rotating part located on the cooling cylinder cavity; the cooling pipeline can circulate the cooling medium, and while performing spot welding on the central positions of the four sides of the multi-layer square metal sheets by rotating the cooling platform, the rotating part can drive the cooling medium in the cooling cylinder cavity and the cooling medium in the two cooling pipelines to exchange, which can accelerate the cooling speed of the solder joints, with good adaptability and practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of the multi-point spot welder provided by the embodiment of the present invention;

[0031] Figure 2 is Figure 1 an enlarged structural diagram of the A position of the schematic structural diagram of the multi-point spot welder provided;

[0032] Figure 3Schematic front view structure diagram of the cooling platform of the multi-point spot welder provided by the embodiment of the present invention;

[0033] Figure 4 is Figure 3 Schematic cross-sectional structure diagram at A-A of the front view structure diagram of the cooling platform of the multi-point spot welder shown;

[0034] Figure 5 Schematic structure diagram of a specific implementation manner of the driving structure of the multi-point spot welder provided by the embodiment of the present invention;

[0035] Explanation of reference numerals:

[0036] 10, frame; 20, spot welding mechanism; 21, hinge block; 22, hinge cantilever; 23, welding copper bar; 30, cooling pipeline; 40, cooling platform; 41, connecting sleeve; 42, cooling cylinder; 43, rotating impeller; 431, blade; 44, connecting cover plate; 45, driving structure; 451, driving connecting frame; 452, driving motor; 4521, driving shaft; 453, auxiliary sleeve; 454, first driving gear; 455, connecting gear shaft; 456, first driven gear; 457, second driving gear; 458, second driven gear; 46, connecting piece; 50, adjusting mechanism; 51, fixing frame; 52, telescopic structure; 53, auxiliary support plate. Specific implementation manner

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] Please refer to Figures 1 to 5 together, and now the multi-point spot welder provided by the present invention will be described. The multi-point spot welder includes a frame 10, a spot welding mechanism 20, a cooling pipeline 30, and a cooling platform 40. Frame 10. The spot welding mechanism 20 is arranged on the frame 10, and the spot welding mechanism 20 has a spot welding end. The cooling pipeline 30 has two, and both cooling pipelines 30 are arranged on the frame 10, and each cooling pipeline 30 circulates a cooling medium. The cooling platform 40 is located below the spot welding end. The cooling platform 40 has a cooling cylinder cavity with an open top and a rotating part located on the cooling cylinder cavity. The cooling cylinder cavity is communicated with the two cooling pipelines 30, and the rotating part extends into the cooling cylinder cavity. The rotating part is used to drive the cooling medium in the cooling cylinder cavity and the cooling medium in the two cooling pipelines 30 to exchange when rotating. A spot welding position for placing multi-layer square metal sheets corresponding to the spot welding end is provided at the top of the rotating part.

[0039] The multi-point spot welder provided in this embodiment, compared with the prior art, is provided with a frame 10, and a spot welding mechanism 20 is arranged on the frame 10. The square metal sheet on the cooling platform 40 of the frame 10 can be spot welded through the spot welding end. The cooling platform 40 can drive the cooling medium in the cooling cylinder cavity and the cooling medium in the two cooling pipelines 30 to exchange when the rotating part rotates through the cooling cylinder cavity and the rotating part located on the cooling cylinder cavity. The cooling pipeline 30 can circulate the cooling medium. When the rotating cooling platform 40 spot welds the central positions of the four sides of multiple layers of square metal sheets, the rotating part can drive the cooling medium in the cooling cylinder cavity and the cooling medium in the two cooling pipelines 30 to exchange, which can accelerate the cooling speed of the welding spots, with good adaptability and practicability.

[0040] In some embodiments, the above multi-point spot welder can adopt a structure as shown in Figure 1 , Figure 2 . Refer to Figure 1 , Figure 2 . Set the direction in which the spot welding end extends outward from the frame 10 as the first direction, and the direction horizontal and perpendicular to the first direction as the second direction.

[0041] The multi-point spot welder further includes an adjustment mechanism 50. The adjustment mechanism 50 is arranged on the frame 10. The adjustment mechanism 50 includes: a fixed frame 51, a telescopic structure 52, and an auxiliary support plate 53. The fixed frame 51 is fixedly arranged on the frame 10. The fixed end of the telescopic structure 52 is fixedly arranged on the fixed frame 51. The telescopic end of the telescopic structure 52 extends along the first direction. A connection hole for installing the cooling platform 40 is arranged on the telescopic end of the telescopic structure 52, and the axis of the connection hole is arranged in the vertical direction. The auxiliary support plate 53 is arranged on the fixed frame 51, and an auxiliary support hole for the telescopic end of the telescopic structure 52 to pass through is arranged on the auxiliary support plate 53.

[0042] The cooling pipeline 30 can be a flexible connection pipeline, which can adapt to the adjustment of the telescopic structure 52. The telescopic structure 52 can be connected to the cooling platform 40 through the connection hole on the telescopic end. The auxiliary support plate 53 can support the cooling platform 40 by allowing the telescopic end of the telescopic structure 52 to pass through the auxiliary support hole.

[0043] In some embodiments, the above cooling platform 40 can adopt a structure as shown in Figures 1 to 5 . Refer to Figures 1 to 5, the temperature reduction platform 40 includes: a connecting sleeve 41, a temperature reduction cylinder 42, a rotating impeller 43, a connecting cover plate 44, and a driving structure 45. The connecting sleeve 41 is inserted into the connecting hole and is detachably connected to the connecting hole. The temperature reduction cylinder 42 is fixedly arranged at the top end of the connecting sleeve 41, and the inner cavity of the temperature reduction cylinder 42 is a temperature reduction cylinder cavity. The rotating impeller 43 is rotatably arranged in the temperature reduction cylinder cavity, and the rotation axis of the rotating impeller 43 is collinear with the axis of the temperature reduction cylinder cavity. A plurality of blades 431 are arranged on the rotating impeller 43, and the plurality of blades 431 are annularly spaced along the rotation axis of the rotating impeller 43. One end of each blade 431 is connected to the rotating impeller 43, and the other end extends radially along the temperature reduction cylinder cavity and abuts against the inner wall of the temperature reduction cylinder cavity. The connecting cover plate 44 is arranged at the top end of the rotating impeller 43, and the connecting cover plate 44 covers the top end of the temperature reduction cylinder 42. The driving structure 45 is arranged at the bottom end of the connecting sleeve 41 and is power-connected to the rotating impeller 43 and the connecting cover plate 44.

[0044] The connecting sleeve 41 can be detachably connected to the connecting hole. The temperature reduction cylinder 42 can be fixedly arranged at the top end of the connecting sleeve 41, the bottom end of the temperature reduction cylinder 42 communicates with the cylinder cavity of the connecting sleeve 41, the rotating impeller 43 can be rotatably arranged in the temperature reduction cylinder cavity and is power-connected to the driving structure 45, and the connecting cover plate 44 can cover the top end of the temperature reduction cylinder 42 and is power-connected to the driving structure 45.

[0045] As a specific implementation manner of this embodiment, the driving structure 45 includes:

[0046] A driving connection frame 451, fixedly arranged on the telescopic end of the telescopic structure 52.

[0047] A driving motor 452, fixedly arranged on the driving connection frame 451, having a driving shaft 4521 arranged in the vertical direction. The driving shaft 4521 penetrates through the cylinder cavity of the connecting sleeve 41 and the temperature reduction cylinder cavity and is connected to the connecting cover plate 44. The driving shaft 4521 is used to drive the connecting cover plate 44 to rotate.

[0048] An auxiliary sleeve 453, sleeved on the driving shaft 4521 and located in the cylinder cavity of the connecting sleeve 41. The top end of the auxiliary sleeve 453 is connected to the rotating impeller 43.

[0049] A first driving gear 454, fixedly arranged on the driving shaft 4521 and rotating synchronously with the driving shaft 4521.

[0050] A connecting gear shaft 455, fixedly arranged on the driving connection frame 451. The axis of the connecting gear shaft 455 is parallel and spaced from the axis of the driving shaft 4521.

[0051] A first driven gear 456, fixedly arranged on the connecting gear shaft 455. The first driven gear 456 meshes with the first driving gear 454, and the transmission ratio of the first driven gear 456 to the first driving gear 454 is 1 / 4.

[0052] The second driving gear 457 is fixedly arranged on the connecting gear shaft 455 and rotates with the connecting gear shaft 455.

[0053] The second driven gear 458 is fixedly arranged at the bottom end of the auxiliary sleeve 453. The second driven gear 458 meshes with the second driving gear 457, and the transmission ratio between the second driven gear 458 and the second driving gear 457 is 1:1.

[0054] Wherein, when the driving motor 452 drives the first driving gear 454 on the driving shaft 4521 to rotate one week, the first driven gear 456 rotates four weeks. At the same time, the second driving gear 457 rotates four weeks. The second driving gear 457 drives the second driven gear 458 to rotate four weeks, so that the connecting cover plate 44 rotates one week, the rotating impeller 43 rotates four weeks, and the connecting cover plate 44 rotates 90° for a spot welding once, and the rotating impeller 43 rotates 360° to discharge the cooling medium in the cooling cylinder cavity.

[0055] In some embodiments, the above cooling platform 40 may adopt a structure as Figures 1 to 3 shown. Refer to Figures 1 to 3 . The cooling platform 40 further includes a connecting piece 46. The connecting piece 46 is arranged at the top end of the connecting cover plate 44 and is detachably connected to the connecting cover plate 44. The top end of the connecting piece 46 is provided with a connecting groove with an open top. The connecting groove is a spot welding position. The connecting piece 46, the connecting cover plate 44 and the rotating impeller 43 together form a rotating part.

[0056] The connecting piece 46 can be detachably connected to the connecting cover plate 44.

[0057] In some embodiments, the above blade 431 may adopt a structure as Figure 4 shown. Refer to Figure 4 . Each blade 431 has an arc surface, and the arc surface is used to drive the cooling medium in the cooling cylinder cavity and the two cooling pipelines 30 to exchange when the driving structure 45 drives the rotating impeller 43 to rotate.

[0058] The arc surface can drive the cooling medium in the cooling cylinder cavity and the two cooling pipelines 30 to exchange when the driving structure 45 drives the rotating impeller 43 to rotate.

[0059] In some embodiments, the above spot welding mechanism 20 may adopt a structure as Figure 1 、 Figure 2 shown. Refer to Figure 1 、 Figure 2, the spot welding mechanism 20 includes: a hinge block 21, a hinge cantilever 22, a welding copper bar 23, and a driver. There are two hinge blocks 21, and the two hinge blocks 21 are arranged at intervals in the second direction. Each hinge block 21 is fixedly connected to the frame 10. One end of the hinge cantilever 22 is hinged to the two hinge blocks 21, and the hinge axis is arranged in the second direction. The other end of the hinge cantilever 22 extends outwards. The welding copper bar 23 is arranged at the extended end of the hinge cantilever 22 and is detachably connected to the extended end of the hinge cantilever 22. The welding copper bar 23 is arranged at an interval in the vertical direction from the spot welding position. The welding copper bar 23 is used to rotate up and down with the hinge cantilever 22 to perform spot welding on the multi-layer square metal sheets in the spot welding position. The welding copper bar 23 is the spot welding end. The driver is arranged on the frame 10 and is used to drive the hinge cantilever 22 to rotate up and down.

[0060] The welding copper bar 23 can rotate up and down with the hinge cantilever 22 to perform spot welding on the multi-layer square metal sheets in the spot welding position. The driver can drive the hinge cantilever 22 to rotate up and down.

[0061] In some embodiments, the above connecting piece 46 can be adopted as Figure 1 , Figure 2 shown structure. See Figure 1 , Figure 2 , the connecting piece 46 is made of brass.

[0062] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Multi-point spot welding machine, characterized in that, include: frame; A spot welding mechanism is arranged on the frame, and the spot welding mechanism has a spot welding end; There are two cooling pipelines, both of which are arranged on the rack, and each of the cooling pipelines flows with cooling medium; A cooling platform is located below the spot welding end, the cooling platform has a cooling cylinder cavity with an open top and a rotating part located on the cooling cylinder cavity, the cooling cylinder cavity is connected with the two cooling pipelines, the rotating part extends into the cooling cylinder cavity, and the rotating part is used to drive the cooling medium in the cooling cylinder cavity to exchange with the cooling medium in the two cooling pipelines when rotating; the top of the rotating part is provided with a spot welding position for placing multiple layers of square metal sheets and corresponding to the spot welding end; The direction in which the spot welding end extends toward the outside of the frame is set as a first direction, and the direction horizontal and perpendicular to the first direction is set as a second direction; The multi-point spot welding machine also includes an adjustment mechanism, which is arranged on the frame and includes: A fixed frame, fixed on the frame; A telescopic structure, wherein a fixed end of the telescopic structure is fixedly mounted on the fixed frame, the telescopic end of the telescopic structure extends along the first direction, a connecting hole for mounting the cooling platform is provided on the telescopic end of the telescopic structure, and an axis of the connecting hole is arranged along the vertical direction; An auxiliary support plate, arranged on the fixing frame, wherein the auxiliary support plate is provided with an auxiliary support hole for the telescopic end of the telescopic structure to pass through; The cooling platform comprises: A connecting sleeve, inserted into the connecting hole and detachably connected to the connecting hole; A cooling cylinder is fixedly mounted on the top of the connecting sleeve, and the inner cavity of the cooling cylinder is the cooling cylinder cavity; A rotating impeller is rotatably arranged in the cooling cylinder cavity, the rotating axis of the rotating impeller is arranged colinearly with the axis of the cooling cylinder cavity, a plurality of blades are arranged on the rotating impeller, and the plurality of blades are arranged at annular intervals along the rotating axis of the rotating impeller, one end of each blade is connected to the rotating impeller, and the other end extends out along the radial direction of the cooling cylinder cavity to abut against the inner wall of the cooling cylinder cavity; A connecting cover plate is arranged at the top of the rotating impeller, and the connecting cover plate is arranged at the top of the cooling cylinder; A driving structure, disposed at the bottom end of the connecting sleeve, and dynamically connected to the rotating impeller and the connecting cover plate; The drive structure includes: A driving connecting frame is fixedly mounted on the telescopic end of the telescopic structure; The driving motor is fixed on the driving connection frame and has a driving shaft arranged in the vertical direction. The driving shaft passes through the cylinder cavity of the connecting sleeve and the cooling cylinder cavity and is connected to the connecting cover plate. The driving shaft is used to drive the connecting cover plate to rotate; An auxiliary sleeve is sleeved on the driving shaft and is located in the cylinder cavity of the connecting sleeve, and the top end of the auxiliary sleeve is connected to the rotating impeller; The first driving gear is fixed on the driving shaft and rotates synchronously with the driving shaft; The connecting gear shaft is fixed on the driving connecting frame, and the axis of the connecting gear shaft is parallel to the axis of the driving shaft and is spaced apart; A first driven gear is fixed on the connecting gear shaft, the first driven gear is meshed with the first driving gear, and the transmission ratio of the first driven gear to the first driving gear is 1 / 4; The second driving gear is fixed on the connecting gear shaft and rotates with the connecting gear shaft; A second driven gear is fixedly arranged at the bottom end of the auxiliary sleeve, the second driven gear is meshed with the second driving gear, and the transmission ratio between the second driven gear and the second driving gear is 1:1; Among them, when the driving motor drives the first driving gear on the driving shaft to rotate one circle, the first driven gear rotates four circles, and at the same time the second driving gear rotates four circles, and the second driving gear drives the second driven gear to rotate four circles, so that the connecting cover plate rotates one circle, the rotating impeller rotates four circles, and the connecting cover plate rotates 90° for spot welding, and the rotating impeller rotates 360° to discharge the cooling medium in the cooling cylinder cavity.

2. The multi-point spot welding machine according to claim 1, characterized in that: The cooling platform also includes a connecting piece, which is arranged on the top of the connecting cover plate and is detachably connected to the connecting cover plate. The top of the connecting piece is provided with a connecting groove with an open top, and the connecting groove is the spot welding position. The connecting piece, the connecting cover plate and the rotating impeller together constitute the rotating part.

3. The multi-point spot welding machine according to claim 1, characterized in that: Each of the blades has an arcuate surface, and the arcuate surface is used to drive the cooling medium in the cooling cylinder cavity and the two cooling pipelines to exchange when the driving structure drives the rotating impeller to rotate.

4. The multi-point spot welding machine according to claim 1, characterized in that: The spot welding mechanism comprises: There are two articulated blocks, the two articulated blocks are spaced apart along the second direction, and each articulated block is fixedly connected to the frame; An articulated cantilever, one end of the articulated cantilever is articulated with the two articulated blocks, the articulation axis is arranged with the second direction, and the other end of the articulated cantilever extends outward; A welding copper rod is arranged at the extended end of the hinged cantilever and is detachably connected to the extended end of the hinged cantilever. The welding copper rod and the spot welding position are arranged at intervals in the vertical direction. The welding copper rod is used to pitch and rotate with the hinged cantilever to spot weld the multi-layer square metal sheets in the spot welding position. The welding copper rod is the spot welding end. A driver is arranged on the frame and is used for driving the articulated cantilever to pitch and rotate.

5. The multi-point spot welding machine according to claim 2, characterized in that: The connecting piece is made of brass.

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