CN210080935U - Gun head structure of resistance welding gun at inner end of steel coil - Google Patents
Gun head structure of resistance welding gun at inner end of steel coil Download PDFInfo
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- CN210080935U CN210080935U CN201920773180.5U CN201920773180U CN210080935U CN 210080935 U CN210080935 U CN 210080935U CN 201920773180 U CN201920773180 U CN 201920773180U CN 210080935 U CN210080935 U CN 210080935U
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Abstract
The utility model provides a steel coil inner end resistance welding gun head structure, which aims at the problems that the welding gun head can not provide enough pressing force when welding thick materials and the metal deformation around welding points is serious in the prior art, and comprises a gun head frame, two electrodes, a welding cylinder and a supporting cylinder which are arranged on the gun head frame, wherein each electrode is respectively fixedly connected with the output end of one welding cylinder through a conductive bridge, the output directions of the welding cylinder and the supporting cylinder are opposite, the axes of the two electrodes and the axis of the supporting cylinder are positioned on the same plane S, and the axes of the two electrodes are symmetrical about the axis of the output end of the supporting cylinder, adjacent auxiliary stay device that sets up with the electrode on the rifle head frame, auxiliary stay device includes two back to the auxiliary stay cylinders that set up, adopts the utility model provides an inner resistance welder rifle head structure of coil of strip can provide bigger packing force and reduce the deformation of metal around the solder joint.
Description
Technical Field
The utility model relates to a coil of strip inner welding field, in particular to coil of strip inner resistance welding gun rifle head structure.
Background
In order to prevent the steel coil from loosening and falling off when the steel coil is transported, lifted or heated in a bell-type furnace for many times in the production process, the strip head of the inner ring of the steel coil and the inner ring of the steel coil are generally welded, so that the strip head is prevented from falling off from the steel coil to cause accidents or dangers or rework. The welding of coil of strip inner circle area head that commonly uses on the existing market uses special spot welding equipment, its rifle head structure is shown in fig. 3, including rifle head frame 10, two parallel arrangement's electrode 20, welding cylinder and support cylinder 50, electrode 20 includes electrode holding rod 21 and rigid coupling at the electrode cap 22 of electrode holding rod 21 tip, every electrode 20 is connected with welding cylinder's output through the conducting bridge, welding cylinder drive electrode 20 is close to or keeps away from coil of strip 80 inner end area head along its axis linear motion, support cylinder 50 back to welding cylinder, support cylinder 50 withstands the coil of strip inner circle and gives electrode 20 a holding power when the welding. However, because the space of the inner ring of the steel coil 80 is limited, the type selection of the welding cylinder and the supporting cylinder 50 is limited, when a thicker plate, for example, a plate with a thickness of more than 2mm, is welded, the supporting force provided by the selected welding cylinder and the supporting cylinder cannot guarantee the pressing of the strip head, sometimes the strip head and the lower layer of material have a large gap, and poor welding can be caused by welding under the condition. In addition, in the welding process, because the pressure applied to the steel coil by the electrode only acts on the welding point, the metal at the welding point is softened and deformed, the metal around the welding point loses effective pressing force and can rebound, a pulling force is applied to the molten metal at the welding point, the metal around the welding point deforms seriously, the strength of the welding point is easily reduced, and the periphery of the welding point is easily uneven.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a coil of strip inner resistance welder rifle head structure to prior art welder rifle head can't provide sufficient packing force and solder joint when welding thick material the comparatively serious problem of metal deformation on every side, can provide bigger packing force and reduce the deformation of metal on every side of the solder joint.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a steel coil inner end resistance welding gun head structure comprises a gun head frame, two electrodes, a welding cylinder and a supporting cylinder, wherein the welding cylinder and the supporting cylinder are arranged on the gun head frame, each electrode is fixedly connected with the output end of one welding cylinder through a conductive bridge, the output directions of the welding cylinder and the supporting cylinder are opposite, the axes of the two electrodes and the axis of the supporting cylinder are positioned on the same plane S, the axes of the two electrodes are symmetrical about the axis of the output end of the supporting cylinder, an auxiliary supporting device is arranged on the gun head frame and adjacent to the electrodes, the auxiliary supporting device comprises two auxiliary supporting cylinders which are arranged back to back, the axes of the two auxiliary supporting cylinders are coaxial and parallel to the axis of the output end of the supporting cylinder, and the axes of the two electrodes are symmetrical about the;
arranging an auxiliary supporting device, wherein the auxiliary supporting device is positioned at the end part of the gun head frame;
at least two auxiliary supporting devices are arranged along the normal direction of the plane S, and the electrode is positioned between the two auxiliary supporting devices;
cushion blocks are fixedly arranged at the end parts of the output ends of the supporting cylinder and the auxiliary supporting cylinder, the cushion blocks are flat cylindrical, the cushion blocks are coaxial with the output ends of the corresponding cylinders, and the diameters of the cushion blocks are larger than those of the output ends of the corresponding cylinders;
the edge of the end face, far away from the cylinder, of the cushion block is provided with a fillet;
the axes of the two electrodes are intersected, and the axes of the two electrodes are vertically intersected with the axis of the steel coil during welding;
the included angle α between the axes of the two electrodes is greater than or equal to 19.8 degrees and smaller than or equal to 23 degrees;
the included angle between the axis of the output end of the welding cylinder and the axis of the electrode is equal to α/2, and the surface of the conductive bridge connected with the electrode is vertical to the electrode.
The utility model discloses following beneficial effect has:
the auxiliary supporting cylinders are arranged at positions close to the electrodes in a back-to-back mode, the axes of the two auxiliary supporting cylinders are parallel to the axis of the output end of the electrode supporting cylinder, the axes of the two electrodes are symmetrical about the axis of the output end of the auxiliary supporting cylinder, when the output end of the two auxiliary supporting cylinders extends to contact a steel coil, the inner ring of the steel coil can be radially jacked along the steel coil, the position of the steel coil jacked by the auxiliary supporting cylinders back to the electrode supporting cylinder is close to a welding point, the auxiliary supporting cylinder can press a tape head around the welding point, the pressing force of the tape head at the welding point is more sufficient, gaps between the tape head at the welding point and the steel coil can be kept basically consistent, and. Meanwhile, metal resilience around the welding spot during welding can be reduced, the metal deformation degree around the welding spot is reduced, the strength of the welding spot is guaranteed, and the flatness of the welding spot is improved. In addition, during welding, the electrode supporting cylinder and the auxiliary supporting cylinder are abutted to the inner ring of the steel coil, so that the gun head is provided with two supports of the double electrode-the electrode supporting cylinder, the auxiliary supporting cylinder and the auxiliary supporting cylinder, the condition that the gun head shakes due to sudden breaking of stress balance of the metal softening gun head at a welding point is avoided, the level and stability of the gun head are guaranteed, the stability of the position of the electrode is improved, and the welding quality is guaranteed.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a steel coil inner end resistance welding gun head structure of the present invention;
FIG. 2 is a schematic view of the welding state of the steel coil by the structure of the resistance welding gun head at the inner end of the steel coil;
fig. 3 is a schematic cross-sectional view of a prior art torch tip for welding a coil of steel.
The description of the reference numerals,
10. a headstock; 20. an electrode; 21. an electrode holding rod; 22. an electrode cap; 30. a first conductive bridge; 31. a second conductive bridge; 40. welding a first air cylinder; 41. welding a second air cylinder; 50. an electrode support cylinder; 60. an auxiliary support device; 61. a first auxiliary supporting cylinder; 62. a second auxiliary supporting cylinder; 70. cushion blocks; 80. and (5) coiling the steel.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals.
A gun head structure of a resistance welding gun at the inner end of a steel coil is shown in figure 1 and comprises a gun head frame 10, two electrodes 20, a first conductive bridge 30, a second conductive bridge 31, a first welding cylinder 40, a second welding cylinder 41, an electrode supporting cylinder 50 and an auxiliary supporting device 60. The electrode 20 comprises an electrode holding rod 21 and an electrode cap 22, one end of the electrode holding rod 21 is fixedly connected with the electrode cap 22, the two electrodes 20 are respectively a positive electrode and a negative electrode, the other end of the electrode holding rod 21 of the positive electrode is fixedly connected with the output end of the welding cylinder I40 through a first conductive bridge 30, and the other end of the electrode holding rod 21 of the negative electrode is fixedly connected with the output end of the welding cylinder II 41 through a second conductive bridge 31. The gun head frame 10 is of a frame body structure, and the first welding cylinder 40, the second welding cylinder 41, the electrode supporting cylinder 50 and the auxiliary supporting device 60 are all arranged on the gun head frame 10. The cylinder bodies of the first welding cylinder 40 and the second welding cylinder 41 are arranged in the same direction, and are opposite to the direction of the cylinder body of the electrode supporting cylinder 50. As shown in fig. 2, the positive electrode axis, the negative electrode axis, and the axis of the output end of the electrode support cylinder 50 are located on the same plane S, and the positive electrode axis and the negative electrode axis are symmetrical with respect to the axis of the output end of the electrode support cylinder 50. The auxiliary supporting device 60 is located beside the electrode 20 and is arranged close to the electrode 20, the auxiliary supporting device 60 comprises a first auxiliary supporting cylinder 61 and a second auxiliary supporting cylinder 62, the first auxiliary supporting cylinder 61 and the second auxiliary supporting cylinder 62 are arranged in a back-to-back mode, the axis of the output end of the first auxiliary supporting cylinder 61 and the axis of the output end of the second auxiliary supporting cylinder 62 are coaxial and parallel to the axis of the output end of the electrode supporting cylinder 50, and the axis of a positive electrode and the axis of a negative electrode are symmetrical with respect to the axis of the output end of the first auxiliary supporting cylinder 61. When in welding, the auxiliary electrode supporting cylinder 50 and the welding cylinder are used for supporting the strip head by the auxiliary supporting device 60, so that the pressing force of the strip head is more sufficient, especially when a steel coil 80 with the thickness larger than 2mm is welded on a welding steel plate, especially when the steel coil 80 with the thickness exceeding 2.5mm can be welded, the gaps among the strip heads at the welding position are kept basically consistent, and poor welding is avoided. Meanwhile, metal resilience around the welding spot during welding can be reduced, the metal deformation degree around the welding spot is reduced, the strength of the welding spot is guaranteed, and the flatness of the welding spot is improved. Furthermore, the utility model discloses a rifle head is when the welding, two electrodes 20, electrode support cylinder 50, one 61 of auxiliary stay cylinder and two 62 of auxiliary stay cylinder all with the 80 inner circles butt of coil of strip, the rifle head has bipolar electrode 20 and electrode support cylinder 50, two sets of supports of one 61 of auxiliary stay cylinder and two 62 of auxiliary stay cylinders, helps keeping the levelness and the stability of rifle head, and then improves the stability of electrode 20 position, helps improving welding quality.
The auxiliary support means 60 may be provided, preferably with the auxiliary support means 60 located at the end of the gun head holder 10, so that the electrode 20 is located between the auxiliary support means 60 and the gun shaft, and in this configuration, since the gun shaft is supported during use, both sides of the electrode 20 are supported, which helps to further ensure the stability of the electrode 20. The auxiliary supporting devices 60 can also be two or more, the auxiliary supporting devices 60 are arranged along the normal direction of the plane S, and the electrode 20 is arranged between the two auxiliary supporting devices 60, so that on one hand, both sides of the electrode 20 are supported at a short distance, and metals at both sides of a welding point are compacted, thereby further reducing the deformation of the metals around the welding point, on the other hand, the supporting points between the gun head and the steel coil 80 during welding can be increased, and the stability of the gun head during welding can be further improved.
In order to increase the supporting area of the electrode supporting cylinder 50, the first auxiliary supporting cylinder 61 and the second auxiliary supporting cylinder 62, the strip head is convenient to compress, a cushion block 70 can be fixedly arranged at the end part of the output end of each cylinder, the cushion block 70 can be arranged into a flat cylinder shape, the cushion block 70 is coaxial with the output end of the corresponding cylinder, the diameter of the cushion block 70 is larger than that of the output end of the corresponding cylinder, the edge of the working end face of the cushion block 70 is preferably rounded, the situation that sharp edges are directly contacted with the inner ring of the steel coil on the cushion block 70 can be avoided, and therefore the pressing mark on the steel coil. The spacer 70 is preferably made of plastic, is light weight, and is inexpensive.
Preferably, the axis of the positive electrode is intersected with the axis of the negative electrode, the closer the distance between the positive electrode and the negative electrode and the conductive bridge is, the smaller the distance between the positive electrode and the negative electrode and the conductive bridge is, the axis of the positive electrode and the axis of the negative electrode are vertically intersected with the axis of the steel coil 80 and are intersected at one point during welding, therefore, during welding, the tangent plane of the point where the positive electrode and the negative electrode are contacted with the inner ring surface of the steel coil 80 is vertical during welding80 are adhered, the included angle between the axis of the positive electrode and the axis of the negative electrode is α, the included angle is preferably 19.8-23 degrees, the phenomenon that the current is consumed due to the fact that the distance between the two electrode caps is too large can be avoided, the phenomenon that the current cannot cross the second layer of steel plates due to the fact that the distance between the two electrode caps 22 is too small can be avoided, and the included angle between the axis of the output end of the axis welding cylinder I40 and the axis of the positive electrode is preferably equal to
The included angle between the axis of the output end of the axis welding cylinder II 41 and the axis of the negative electrode is also
Therefore, only the orientation of the positive electrode and the negative electrode can be changed, the first welding cylinder 40 and the second welding cylinder 41 can be kept parallel all the time, the selection of the stroke of the welding cylinders can be avoided being limited by the distance between the electrode caps 22 of the positive electrode and the negative electrode, preferably, the surface of the conductive bridge connecting electrode 20 is perpendicular to the corresponding electrode 20, the surface of the conductive bridge connecting electrode 20 of the welding cylinders is perpendicular to the axis of the output end of the corresponding welding cylinders, and the conductive bridge is convenient to be connected with the electrode 20 and the welding cylinders.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a coil of strip inner resistance welder rifle head structure, including rifle head frame (10), two electrodes (20), welding cylinder and electrode support cylinder (50) of setting on rifle head frame (10), every electrode (20) are respectively through the output rigid coupling of a conductive bridge and a welding cylinder, welding cylinder and electrode support cylinder (50) output opposite direction, the axis of two electrodes (20) and the axis of electrode support cylinder (50) are located coplanar S, and the axis of two electrodes (20) is symmetrical about the axis of electrode support cylinder (50) output, its characterized in that: an auxiliary supporting device (60) is arranged on the gun head frame (10) and adjacent to the electrodes (20), the auxiliary supporting device (60) comprises two auxiliary supporting cylinders which are arranged back to back, the axes of the two auxiliary supporting cylinders are coaxial and are parallel to the axis of the output end of the electrode supporting cylinder (50), and the axes of the two electrodes (20) are symmetrical about the axis of the output end of the auxiliary supporting cylinder.
2. The steel coil inner end resistance welding gun head structure according to claim 1, characterized in that: an auxiliary support device (60) is provided, and the auxiliary support device (60) is positioned at the end of the gun head frame (10).
3. The steel coil inner end resistance welding gun head structure according to claim 1, characterized in that: at least two auxiliary support means (60) are arranged normal to the plane S, and the electrode (20) is located between the two auxiliary support means (60).
4. The steel coil inner end resistance welding gun head structure according to claim 1, characterized in that: the end parts of the output ends of the electrode supporting cylinder (50) and the auxiliary supporting cylinder are fixedly provided with cushion blocks (70), the cushion blocks (70) are flat cylindrical, the cushion blocks (70) are coaxial with the output ends of the corresponding cylinders, and the diameters of the cushion blocks (70) are larger than the diameters of the output ends of the corresponding cylinders.
5. The steel coil inner end resistance welding gun head structure according to claim 4, characterized in that: the edge of the end face of the cushion block (70) far away from the cylinder is provided with a round angle.
6. The steel coil inner end resistance welding gun head structure according to claim 1, characterized in that: the axes of the two electrodes (20) are intersected, and the axes of the two electrodes (20) are vertically intersected with the axis of the steel coil (80) during welding.
7. The gun head structure of the resistance welding gun for the inner end of the steel coil according to claim 6, wherein an included angle α between the axes of the two electrodes (20) is greater than or equal to 19.8 degrees and smaller than or equal to 23 degrees.
8. The gun head structure of the resistance welding gun at the inner end of the steel coil according to claim 7, characterized in that the included angle between the axis of the output end of the welding cylinder and the axis of the electrode (20) is equal to α/2, and the surface of the conductive bridge connected with the electrode (20) is vertical to the electrode (20).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920773180.5U CN210080935U (en) | 2019-05-27 | 2019-05-27 | Gun head structure of resistance welding gun at inner end of steel coil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920773180.5U CN210080935U (en) | 2019-05-27 | 2019-05-27 | Gun head structure of resistance welding gun at inner end of steel coil |
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| CN210080935U true CN210080935U (en) | 2020-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029366A1 (en) * | 2021-09-01 | 2023-03-09 | 广东海德亚科技有限公司 | Shape memory alloy wire welding assembly, shape memory alloy wire welding method, and shape memory alloy wire fixedly-welded product |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029366A1 (en) * | 2021-09-01 | 2023-03-09 | 广东海德亚科技有限公司 | Shape memory alloy wire welding assembly, shape memory alloy wire welding method, and shape memory alloy wire fixedly-welded product |
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