Terminal post and terminal post sleeve induction electric heating welding device and automatic production line
Technical Field
The invention relates to the technical field of lead-acid storage battery assembly, in particular to an induction electric heating welding device for an end post and an end post sleeve and an automatic production line.
Background
In the assembly production process of the lead-acid storage battery, an end pole sleeve positioned on a battery cover is connected with an end pole on the battery by adopting manual or equipment open flame welding gun for welding. In the welding process, flame control is difficult, heating temperature controllability is poor, and the welding effect after welding is seriously affected.
In the conventional flame welding gun, as shown in fig. 1, in the welding process of welding the end post 42 and the end post sleeve 41, natural gas and oxygen are mixed and then burned to form flame, and the flame is mainly heated and melted, and comprises a gas mixing part 51, a flame lifting device 52 and a flame spraying device 54.
Because the welding height requirements on the two end polar posts are strict, namely, the height requirements on the two positive and negative end polar posts are consistent after welding, if the set requirements are exceeded, the whole lead-acid storage battery can be judged to be defective, and repair welding and other operations are needed in the later period. The flame in the flame welding gun is difficult to control, and the controllability of the heating temperature is poor, so that the welding height is difficult to control.
In fig. 1, it can be seen that to overcome this difficulty, a flame heating core rod 55 is provided in the center of the flame gun. When the terminal post and the terminal post sleeve are welded, the die 53 is aligned with a battery workpiece to be welded under the drive of a flame lifting device 52 such as a servo motor; then, the flame which burns after the natural gas and the oxygen are mixed heats the flame heating core rod, then the height of the flame heating core rod is reduced, and the flame heating core rod is contacted with the terminal post or the terminal post sleeve through the central hole of the die to heat, so that the terminal post and the terminal post sleeve are uniformly heated and melted; the flame heating core rod is continuously lowered until the height is set, namely, the welding height of the terminal pole is ensured by the lowering height of the flame heating core rod.
The use of the flame heating core rod can improve the qualification rate of the welded terminal post to a certain degree, but still is not high, compared with the pure flame welding. The specific reason is that: because the flame heating core rod is contacted with the surfaces of the terminal post and the terminal post sleeve, after the heating is finished, the flame heating core rod and the flame rise, and the mold is cooled and molded. However, in the rising process of the flame heating core rod, molten liquid of the terminal post and the terminal post sleeve which are not cooled is taken away, and the taking-away amount of the molten liquid is not easy to control, so that the height of a battery workpiece after welding is difficult to control, and the overall height is short.
In addition, a flame system for burning natural gas and oxygen after mixing needs a complicated gas path control system, and wiring and piping are complicated and high in requirements. Further, flame temperature, size are influenced by outside change greatly, can't guarantee invariable flame temperature and size, and factor of safety is low, has certain potential safety hazard.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, and provides an induction electric heating welding device for an end pole and an end pole sleeve, which adopts induction electric heating to melt a workpiece, so that the melting temperature is stabilized, the structure is simplified, the safety performance is improved, and the production efficiency is improved. And importantly, the height consistency of the post at the welded end of the battery workpiece is good, and the qualification rate is high.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides an end utmost point post and end utmost point post cover induction electric heat fusion device, includes the heat fusion device body, and this heat fusion device body is used for the heat fusion of battery work piece, and the battery work piece includes two end utmost point posts and is located two end utmost point post covers on the battery lid, and after the battery lid closed, the periphery at corresponding end utmost point post is established to end utmost point post cover.
The hot welding device body comprises a jacking mechanism I, a conical die and a heating mechanism which are coaxially arranged.
The jacking mechanism is used for jacking the battery workpiece.
The heating mechanism comprises a mounting top plate, two induction electric heating machine heads and two induction electric heating coils; the installation roof height can go up and down, and two induction electric heating aircraft nose all connect in installation roof bottom perpendicularly, and an induction electric heating coil is fixed respectively to every induction electric heating aircraft nose bottom.
The number of the conical dies is two, and the two conical dies are arranged between the jacking mechanism I and the heating mechanism; the two conical dies can be respectively positioned right above the two end polar posts, the heights of the two conical dies are equal, and the two conical dies can synchronously lift; the bottom of each conical die is provided with a cylindrical part which can be sleeved on the periphery of the end pole sleeve.
The two induction heating coils can be respectively positioned right above the two conical dies, and the heights of the two induction heating coils are equal.
The thermal welding device body further comprises a telescopic limit baffle, and the telescopic limit baffle can limit the placement position of the battery workpiece on the jacking mechanism.
The thermal fusion device body further comprises a photoelectric sensor which can detect whether a battery workpiece is placed on the lifting mechanism.
The jacking mechanism I comprises a jacking flat plate, a jacking side plate, a jacking base plate and a support column; two sides of the jacking flat plate are respectively provided with a jacking side plate, and the jacking base plate is positioned right below the jacking flat plate; the bottoms of the jacking flat plate and the two jacking side plates are fixedly connected with the jacking base plate through supporting columns; the top parts of the jacking flat plate and the two jacking side plates are positioned on the same horizontal plane; and a gap is reserved between the jacking flat plate and the two jacking side plates.
The outer diameter of each induction heating coil is not smaller than the outer diameter of the end pole sleeve.
The invention also provides an automatic production line for the induction electric heating welding of the end pole and the end pole sleeve, which adopts the induction electric heating to melt the workpiece, thereby stabilizing the melting temperature, simplifying the structure, improving the safety performance and improving the production efficiency. And importantly, the height consistency of the post at the welded end of the battery workpiece is good, and the qualification rate is high.
An automatic production line for the induction electric heating welding of an end pole and an end pole sleeve comprises a battery conveying slide rail, a heat welding station and a height detection station; the thermal welding station and the height detection station are sequentially arranged along the transmission direction of the battery conveying slide rail.
The battery conveying slide rail is used for horizontally conveying battery workpieces.
The thermal welding station comprises at least one thermal welding device body.
And the jacking mechanism in the hot welding device body can jack up the battery workpiece positioned on the battery conveying slide rail.
The telescopic limit baffle is arranged on a battery conveying sliding rail positioned at the downstream of the jacking mechanism, and the telescopic limit baffle is connected with the photoelectric sensor.
The height detection station is provided with a height detection device, and the height detection device can detect the heights of the two end polar posts on the battery workpiece after thermal welding.
The thermal welding station comprises two thermal welding device bodies.
The height detection device comprises a height detection head capable of lifting, the height detection head comprises a vertical mounting plate and three displacement sensors arranged on the vertical mounting plate, the bottoms of the three displacement sensors are located at the same height, and the two displacement sensors can be located right above two end polar posts on a battery workpiece respectively.
Two sides of the battery conveying slide rail are respectively provided with a baffle, and the inner side wall of each baffle is provided with an antifriction mechanism.
The invention has the beneficial effects that:
1. the induction heating welding device has the advantages of rapid heating, stable temperature control, simple control system, simple structure, cost saving, high safety, small influence by external environment and the like.
2. The induction heating coil is not in direct contact with the terminal post and the terminal post sleeve, so that molten liquid of the terminal post to be cooled and the terminal post sleeve cannot be taken away when the induction heating coil ascends, and the welded terminal post of the battery workpiece is good in height consistency and high in qualification rate.
3. The area, the current and the heating height of the induction heating coil are controlled, so that the height of the welded end pole of the battery workpiece is ensured. In addition, the arrangement of the die can cool and shape the end pole, and the height of the welded end pole is further ensured.
4. The invention also solves the problem that a flame system adopting natural gas and oxygen to burn after mixing needs a complex gas path control system,
the wiring and piping are complicated and require high levels.
Drawings
Fig. 1 shows a prior art terminal post and terminal post sleeve fusion device for a battery workpiece.
FIG. 2 shows a schematic diagram of an automatic production line for induction electric welding of an end post and an end post sleeve according to the present invention.
Fig. 3 is a schematic cross-sectional view showing an induction electric welding apparatus for an end post and an end post sleeve according to the present invention.
Fig. 4 shows a schematic structural diagram of the first or second lifting mechanism.
Fig. 5 shows a schematic perspective view of a battery workpiece.
The method comprises the following steps:
10. a battery conveying rail; 11. a baffle; 111. an antifriction mechanism;
20. a heat welding device body; 21. a heating mechanism; 211. lifting columns; 212. installing a top plate; 213. an induction electric heater head; 214. an induction heating coil; 22. a first jacking mechanism; 221. lifting the flat plate; 222. jacking the side plates; 223. lifting the substrate; 224. a support column; 23. a conical die; 231. a cylindrical portion; 24. a telescopic limit baffle; 25. a photoelectric sensor;
30. a height detection device; 31. a height detection mechanism; 311. a lifting rod; 312. jacking the mounting plate; 313. a height detection head; 314. a vertical mounting plate; 315. a displacement sensor; 32. a jacking mechanism II;
40. a battery workpiece; 41. an end pole sleeve; 42. an end pole;
51. a gas mixing section; 52. a flame lifting device; 53. a mold; 54. a flame spraying device; 55. the flame heats the core rod.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
As shown in fig. 1, 3 and 5, the battery work piece 40 includes two end posts 42 and two end post sleeves 41 on the battery cover. Wherein the two terminal posts 42 are a positive terminal post and a negative terminal post, respectively.
When the battery cover is covered, the terminal post sleeves are sleeved on the periphery of the corresponding terminal post.
As shown in fig. 2, an automatic production line for the induction heating welding of the terminal post and the terminal post sleeve comprises a battery conveying slide rail 10, a heat welding station and a height detection station; the thermal welding station and the height detection station are sequentially arranged along the transmission direction of the battery conveying slide rail.
The battery conveying slide rail is used for horizontally conveying the battery workpieces 40, two baffle plates 11 are respectively arranged on two sides of the battery conveying slide rail, and an anti-friction mechanism is preferably arranged on the inner side wall of each baffle plate.
The baffle plate is preferably an L-shaped backer plate, and the anti-friction mechanism is preferably a plastic plate or an elastic wear-resistant material.
The thermal welding station comprises at least one thermal welding device body 20, preferably two thermal welding device bodies being provided in the present invention.
As shown in fig. 3, an induction electric welding apparatus for an end post and an end post sleeve includes a heat welding apparatus body 20 for heat welding of a battery workpiece 40, the heat welding apparatus body including a jacking mechanism one 22, a tapered die 23, and a heating mechanism 21 coaxially disposed.
The jacking mechanism is used for jacking the battery workpiece.
As shown in fig. 4, the first lifting mechanism 22 preferably includes a lifting plate 221, a lifting side plate 222, a lifting base plate 223, and a column 224.
Two sides of the jacking flat plate are respectively provided with a jacking side plate, and the jacking base plate is positioned right below the jacking flat plate; the bottoms of the jacking flat plate and the two jacking side plates are fixedly connected with the jacking base plate through supporting columns; the top parts of the jacking flat plate and the two jacking side plates are positioned on the same horizontal plane; and a gap is reserved between the jacking flat plate and the two jacking side plates.
The top or vertical portion of the baffle passes through the gap. The setting of above-mentioned jacking curb plate can adapt to the battery work piece of different width models, and then makes battery work piece can steadily jack up to and guarantee welding process or high detection in-process, the planarization of battery work piece bottom, and then guarantee the precision that high or welding rear end post height detected after the welding.
The heating mechanism 21 includes a mounting top plate 212, two induction heating heads 213, and two induction heating coils 214.
The mounting top plate can be lifted and lowered in height, and is preferably fixed on one side of the battery conveying sliding rail through a lifting column.
The two induction heating machine heads are vertically connected to the bottom of the mounting top plate, and each induction heating machine head can slide back and forth preferably, namely the distance between the two induction heating machine heads can be adjusted, and therefore the electric heating machine head can adapt to battery workpieces of different models.
An induction heating coil is fixed at the bottom of each induction heating machine head.
The outer diameter of each induction heating coil is preferably not smaller than the outer diameter of the end post sleeve.
In the electric heating process, the heating temperature is ensured by controlling the current fluctuation range in the two induction heating coils and controlling the heating height of the induction heating coils, so that the heating is uniform and is not influenced by the outside.
The number of the conical dies is two, and the two conical dies are arranged between the jacking mechanism I and the heating mechanism.
The two conical dies 23 can be respectively positioned right above the two end poles, the heights of the two conical dies are equal, and the two conical dies can synchronously lift; the bottom of each conical die is provided with a cylindrical portion 231 which can be sleeved on the periphery of the end pole sleeve.
A thermocouple or temperature sensor is preferably provided in each conical die to detect the heating temperature of the conical die or the temperature of the end post sleeve.
The two induction heating coils can be respectively positioned right above the two conical dies, and the heights of the two induction heating coils are equal.
Further, the thermal fusion device body also preferably includes a retractable limit stop 24 that can limit the placement of the battery workpiece on the jacking mechanism.
The telescopic limit baffle 24 is preferably arranged on one side of the battery conveying slide rail and is perpendicular to the conveying direction of the battery workpiece.
The telescopic limit baffle is arranged on a battery conveying sliding rail positioned at the downstream of the jacking mechanism, and the telescopic limit baffle is connected with the photoelectric sensor.
As shown in fig. 2, the telescopic limit baffle can slide left and right (i.e. in the transmission direction) under the drive of the motor, i.e. the left and right position adjustment is realized. In addition, the telescopic limit baffle can also realize the adjustment of the upper and lower positions under the adjustment of the hand wheel, and then, can adapt to battery workpieces with different lengths or height models.
Further, the thermal fusion apparatus body preferably further includes a photoelectric sensor capable of detecting whether or not the battery workpiece is placed on the lifting mechanism.
During welding, automatic feeding and welding of the battery workpieces are realized through blocking control of the photoelectric sensor and the telescopic limiting baffle. If the photoelectric sensor positioned at the downstream detects that a battery workpiece enters, the expansion limit baffle at the downstream stretches to block, then the indicator light of the photoelectric sensor at the downstream is extinguished, and the welding process is started.
When the downstream photoelectric sensor indicator lights are extinguished, the upstream photoelectric sensor works, when a battery workpiece on the upstream jacking mechanism I enters, the upstream telescopic limit baffle stretches to block, then the indicator lights of the upstream photoelectric sensor are extinguished, and the welding process is started.
And the two heat welding device bodies are sequentially circulated, so that the simultaneous or alternate welding of the two heat welding device bodies is realized.
Because the welding time length is far longer than the height detection time length, the automatic production line reduces the welding waiting time and greatly improves the production efficiency.
The height detection station is provided with a height detection device 30 which can detect the heights of the two end poles on the battery workpiece after thermal welding.
The height detection device includes a height detection mechanism 31 and a second lifting mechanism 32.
The structure of the second jack-up mechanism 32 is the same as the first jack-up mechanism 22, and will not be described again here.
The height detection mechanism comprises a height detection head 313, the tops of which are all preferably slidably connected to a top mounting plate 312, and the top mounting plate is preferably fixed to one side of the battery conveying slide rail through a lifting rod 311.
The height detection head preferably includes a vertical mounting plate 314 and three displacement sensors 315 disposed on the vertical mounting plate, the bottoms of the three displacement sensors being at the same height, wherein two of the displacement sensors can be located directly above two end posts on the battery workpiece, respectively.
In the present invention, it is preferable that the two displacement sensors on both sides are respectively located right above the two end posts on the battery workpiece, and the displacement sensor in the middle is directed to the upper surface of the battery workpiece. When the height is detected, the middle displacement sensor is used as a reference, and the displacement sensors positioned at the two sides are respectively compared with the reference, so that whether the heights of the two end polar posts are consistent can be judged.
Further, the spacing between the three displacement sensors is preferably adjustable to accommodate different types of battery workpieces.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the equivalent changes belong to the protection scope of the present invention.