CN217618717U - Precise peripheral welding device - Google Patents

Abstract

The utility model discloses an accurate peripheral welding set, include: the device comprises a bracket, a positioning device and a control device, wherein a tray for placing a workpiece is arranged on the bracket; the laser welding mechanism is arranged above the tray; the pressing mechanism is arranged above the tray in a lifting manner and used for pressing the workpiece by descending; and the blowing mechanism is arranged on the pressing mechanism and used for blowing protective gas to the welding position of the workpiece. This embodiment combines through hold-down mechanism and blowing mechanism, can improve welding precision and welding quality, effectively improves the yields.

Description

Precise peripheral welding device

Technical Field

The utility model relates to the field of welding technique, in particular to accurate peripheral welding set.

Background

With the rise of smart watches, the demand for miniature steel-shell batteries has increased. The steel shell of the miniature steel shell battery is thin, and is easy to deform in the process of welding the steel cover to the steel shell flange, but the welding precision is high, so that the yield is low, and a precise peripheral welding device needs to be developed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an accurate peripheral welding set can accomplish the steel casing welding of miniature steel-shelled battery to improve the yields.

According to the utility model discloses accurate peripheral welding device, include: the device comprises a bracket, a supporting frame and a positioning mechanism, wherein a tray for placing a workpiece is arranged on the bracket; the laser welding mechanism is arranged above the tray; the pressing mechanism is arranged above the tray in a lifting manner and used for pressing the workpiece by descending; and the blowing mechanism is arranged on the pressing mechanism and used for blowing protective gas to the welding position of the workpiece.

According to the utility model discloses accurate peripheral welding device has following beneficial effect at least:

the during operation puts the lower casing of miniature steel-shelled battery on the tray, puts electric core down on the casing, covers the steel lid again, later pushes down fixed steel lid and lower casing through hold-down mechanism earlier, makes both keep relatively fixed, hug closely, because the steel lid is through the flange laminating with the laminating department of casing down, the welding position is the inner circle part in flange laminating position, consequently hold-down mechanism can realize circumference through the marginal position that compresses tightly the steel lid and compress tightly, can not cut off laser simultaneously. And then starting the laser welding mechanism to weld. In the welding process, protective gas is synchronously blown by the blowing mechanism, so that the brightness of the welding seam can be ensured. This embodiment combines through hold-down mechanism and blowing mechanism, can improve welding precision and welding quality, effectively improves the yields.

According to the utility model discloses a some embodiments, hold-down mechanism corresponds laser welding mechanism is provided with lets the position mouth, the mechanism of blowing winds let the circumference of position mouth be provided with a plurality of mouths of blowing.

According to the utility model discloses a some embodiments, the mechanism of blowing is provided with: the runner plate is provided with a stepped port with a small upper part and a large lower part corresponding to the yielding position port, and a circle of flange plate is formed on the runner plate through the stepped port; a plurality of air cocks, it is a plurality of the air cock centers on ladder mouth evenly distributed, the air cock is vertical to be installed on the flange board, and the end of giving vent to anger of air cock lower extreme is followed the lower extreme of flange board is stretched out, in order to form the mouth of blowing.

According to the utility model discloses a some embodiments, accurate peripheral welding set still is provided with negative pressure dust removal mechanism, negative pressure dust removal mechanism centers on let a mouthful be provided with a plurality of dust removal mouths.

According to the utility model discloses a some embodiments, negative pressure dust removal mechanism includes: the first negative pressure flow channel is arranged in the flow channel plate around the stepped port; the second negative pressure flow channels are arranged in the flow channel plate, a plurality of second negative pressure flow channels are arranged along the length direction of the first negative pressure flow channels, one end of each second negative pressure flow channel is communicated with the first negative pressure flow channel, and the other end of each second negative pressure flow channel is communicated with the side wall of the stepped port to form the dust removal port; the third negative pressure flow channel is vertically arranged at the lower end of the flow channel plate and communicated with the first negative pressure flow channel; and the negative pressure connecting seat is arranged on the support and is positioned below the third negative pressure flow channel, and the negative pressure connecting seat is connected with negative pressure equipment and is used for communicating the third negative pressure flow channel when the third negative pressure flow channel descends along with the pressing mechanism.

According to some embodiments of the utility model, hold-down mechanism is provided with: the upper jig is vertically provided with a plurality of guide pillars, the lower ends of the guide pillars penetrate through the bracket, and the yielding position opening is formed in the upper jig; the jacking springs are sleeved on the guide pillars and used for keeping the upper jig at a position far away from the support in a normal state; and the first driving assembly is connected with the upper jig and used for controlling the upper jig to move downwards.

According to some embodiments of the utility model, be provided with second drive assembly on the support, second drive assembly corresponds the tray sets up on the support, be used for with the tray is followed ejecting on the support.

According to some embodiments of the invention, the second drive assembly is provided with: the lifting mounting seat is vertically and slidably arranged on the bracket; the screw rod is vertically arranged on the lifting installation seat corresponding to the tray, and is in threaded fit with the bracket so as to move up and down relative to the bracket in the rotating process; and the driving motor is arranged on the lifting mounting seat and is in transmission connection with the screw rod so as to be used for controlling the screw rod to rotate.

According to some embodiments of the utility model, be provided with positioning mechanism on the support, positioning mechanism is used for detecting the locating position of tray.

According to the utility model discloses a some embodiments, the tray has two benchmark limits, be provided with on the support and be used for putting the concave position of putting of tray, the support is in put concave position with two lateral walls that the benchmark limit corresponds have seted up detection channel, positioning mechanism corresponds two the benchmark limit is provided with a set of contact sensor respectively, contact sensor's sense terminal via the detection channel butt the tray.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is a schematic view of an overall structure of the present invention;

FIGS. 2 and 3 are schematic views of a second drive assembly;

FIG. 4 is a schematic view of a configuration of a flow field plate;

FIG. 5 is a schematic view of an apparatus employing two precision peripheral welding devices.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.

In the description of the present invention, a plurality means two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 5, a precision peripheral welding apparatus according to an embodiment of the present invention includes a support 300, a laser welding mechanism 200, a pressing mechanism, and a blowing mechanism; the bracket 300 is provided with a tray 400 for placing workpieces; the pressing mechanism is liftably provided above the tray 400 to press the workpiece on the tray 400 by descending; the blowing mechanism is arranged on the pressing mechanism and used for blowing protective gas to the welding position of the workpiece; the laser welding mechanism 200 is disposed above the tray 400.

The during operation, put miniature steel-shelled battery's lower casing on tray 400, put electric core down on the casing, cover the steel lid again, later push down fixed steel lid and lower casing through hold-down mechanism earlier, make both keep relatively fixed, hug closely, because the steel lid is through the flange laminating with the laminating department of casing down, welding position is the inner circle part in flange laminating position, therefore hold-down mechanism can realize circumference through the marginal position that compresses tightly the steel lid and compress tightly, can not cut off laser simultaneously. And then the laser welding mechanism 200 is started to weld. In the welding process, protective gas is synchronously blown through the blowing mechanism, so that the brightness of a welding line can be ensured. This embodiment combines through hold-down mechanism and blowing mechanism, can improve welding precision and welding quality, effectively improves the yields.

Considering that the steel cover and the steel shell flange are welded along the circumferential direction, referring to fig. 2 and 3, it can be understood that the pressing mechanism is provided with a relief port 106 corresponding to the laser welding mechanism 200, and the blowing mechanism is provided with a plurality of blowing ports around the circumferential direction of the relief port 106. First, the pressing mechanism is provided with the escape opening 106, so that the laser beam emitted from the laser welding mechanism 200 located above the tray 400 is applied to the workpiece, and the pressing mechanism does not interfere with the operation of the laser welding mechanism 200. Secondly, set up the gas blowing mouth around letting position mouth 106, can ensure that the welding seam position of steel lid evenly fills protective gas, improves the welding seam quality.

Referring to fig. 2 and 3, it can be understood that the air blowing mechanism is provided with a flow channel plate 101 and air nozzles 102 installed on the flow channel plate 101. The flow channel plate 101 is installed on the pressing mechanism, a stepped opening 103 with a small upper part and a large lower part is arranged in the central area of the flow channel plate 101 corresponding to the yielding opening 106, and a circle of flange plates are formed at the upper end position of the stepped opening 103. The air nozzles 102 are provided in plural and uniformly distributed along the length direction of the flange plate. The air nozzles 102 are vertically installed on the flange plate, and the air outlet ends of the lower ends of the air nozzles 102 extend out from the lower end of the flange plate to form air blowing openings. The upper end of the air nozzle 102 extends above the flow field plate 101 and is provided with a joint structure for connecting a shielding gas delivery pipe. This embodiment forms the flange board through the setting of ladder mouth 103, through flange board installation air cock 102, because the position of air cock 102 lower extreme has formed the vacancy based on the shape of ladder mouth 103 for air cock 102 can direct alignment let position mouth 106, is carrying out laser welding's in-process, and the protective gas that sends out through air cock 102 lower extreme can directly act on the welding seam region. And through the flange plate that the ladder mouth 103 formed, also easy to assemble air cock 102, can effectively erect air cock 102 in the upper region of work piece welding position. Meanwhile, the air nozzle 102 is erected by the arrangement of the stepped opening 103, so that the air nozzle 102 is prevented from being too close to the position-giving opening 106 to block welding operation.

In order to solve the smoke generated in the laser welding process, the precise peripheral welding device is also provided with a negative pressure dust removal mechanism, and the negative pressure dust removal mechanism is provided with a plurality of dust removal ports around the let port 106. During actual work, the dust removal port can be started completely, so that generated smoke can be cleaned in time when laser welding is carried out at any position, and special control is not needed. It is also possible to follow the start-up, i.e. the opening of the dust removal opening in the vicinity of the location where only laser welding is to be carried out each time, and the closing of the other locations.

Referring to fig. 4, it can be understood that the negative pressure dust removing mechanism opens four communicating first negative pressure flow channels 107 in the flow channel plate 101 around the stepped opening 103. Each first negative pressure flow passage 107 is provided with a plurality of second negative pressure flow passages 108 communicating with the stepped port 103 along the horizontal direction, and the horizontal height of the second negative pressure flow passages 108 is lower than that of the flange plate so as to avoid interference with the air nozzles 102. The lower end of the flow channel plate 101 is vertically provided with a third negative pressure flow channel, and the third negative pressure flow channel is communicated with the first negative pressure flow channel 107. The negative pressure dust removing mechanism is further provided with a negative pressure connecting seat on the support 300, the negative pressure connecting seat is located below the third negative pressure flow channel, and the negative pressure connecting seat is connected with a negative pressure device.

By adopting the structure of the embodiment, when the pressing mechanism presses down the workpiece, the runner plate 101 descends along with the workpiece, and the third negative pressure pipeline is automatically butted with the negative pressure connecting seat, so that the first negative pressure flow channel 107 is communicated with the negative pressure equipment, and the dust removing opening formed by the second negative pressure flow channel 108 can simultaneously start the negative pressure dust removing function.

It should be noted that, in practical application, the dust removal opening and the air nozzle 102 can be simultaneously activated, and the effect of the shielding gas can be prevented from being affected by the dust removal opening through analysis and calculation in the prior art such as a finite element, or the position distribution of the dust removal opening and the air nozzle is flexibly staggered, and the dust removal and the shielding gas protection are simultaneously taken into consideration. In addition, the device can be independently started, namely the blowing of the protective gas is not started when the dust removal port is started to carry out negative pressure dust removal, and the technical personnel in the field can flexibly set the actual working mode.

Referring to fig. 2, it can be understood that the pressing mechanism is provided with an upper jig 100, the abdicating opening 106 is formed at the middle position of the upper jig 100, and the upper jig 100 is provided with a pressing platform structure matched with the edge shape of the steel cover through the abdicating opening 106, so as to press the edge position of the steel cover when descending. A plurality of guide posts 104 are vertically arranged around the upper jig 100, and are inserted into the bracket 300 through the guide posts 104. Meanwhile, the guide posts 104 are sleeved with lifting springs 105, so that the upper jig 100 is normally kept above the tray 400 by the lifting springs 105. The pressing mechanism is provided with a first driving assembly on the bracket 300, and the first driving assembly is connected to the upper jig 100 and used for controlling the upper jig 100 to move downwards.

Adopt the structure setting of this embodiment, go up tool 100 and can ensure through the setting of guide pillar 104 that the lift route is stable, accurate, set up jacking spring 105 simultaneously and in time ensure to reset, make things convenient for the ejection of compact. Meanwhile, the jacking spring 105 is used for keeping the position state under the normal state, so that the load of the first driving assembly can be reduced, and the service life of the first driving assembly can be prolonged.

Referring to fig. 1, it can be understood that the first driving assembly is provided with air cylinders 301 vertically installed on the bracket 300 corresponding to both ends of the upper jig 100, and the telescopic ends of the air cylinders 301 are provided with snap joints. The lower end of the upper jig 100 is provided with a clamping seat matched with the clamping head. The cylinder 301 drives the upper fixture 100 to move downwards through the matching of the clamping head and the clamping seat in the telescopic process.

It should be noted that, in the foregoing embodiment, the size of the lower end of the stepped opening 103 may be larger than the size of the relief opening 106, so that the air faucet 102 faces the actual welding position.

Referring to fig. 2 and 3, it can be understood that the bracket 300 is provided with a second driving assembly 500 for ejecting the tray 400 from the bracket 300, the second driving assembly 500 is provided with a lifting mount 502, and the lifting mount 502 is slidably mounted on the bracket 300 by a vertical slide rail. The lifting installation base 502 is provided with a driving motor 504 and a screw rod 501, and the driving motor 504 is in transmission connection with the screw rod 501 through a gear pair 503. The upper end of the screw rod 501 extends to the bottom of the tray 400, and meanwhile, the screw rod 501 is in threaded fit with the bracket 300.

When the driving motor 504 rotates, the screw rod 501 can be controlled to rotate, the screw rod 501 moves up and down relative to the bracket 300, and the lifting mounting base 502 moves up and down synchronously with the screw rod. When moving upwards, can jacking tray 400 to make things convenient for the staff to take out tray 400 fast and the work piece that the welding was accomplished.

In consideration of the fact that products to be handled may have different sizes, a lower jig 401 is detachably provided at the upper end of the support 300, and the tray 400 is placed on the lower jig 401. Thus, after the specification of the workpiece is changed, the lower jig 401 and the tray 400 can be correspondingly changed, and the application range can be expanded.

In order to improve the processing accuracy, a positioning mechanism for detecting the placement position of the tray 400 is provided on the holder 300. The present embodiment can ensure that the placing position of the tray 400 reaches the set position every time through the setting of the positioning mechanism, thereby ensuring the accuracy of the pressing position of the pressing mechanism and further improving the welding accuracy.

Referring to fig. 2 and 3, it can be appreciated that the tray 400 has two reference edges that are directly machined during the manufacturing process of the tray 400. A placing concave position for placing the tray 400 is arranged on the bracket 300, and two side walls of the placing concave position corresponding to the reference edge are provided with horizontal detection channels. The positioning mechanism is provided with a contact sensor 402 corresponding to each detection channel, and the contact sensor 402 determines whether the tray 400 is placed in place through the detection channel.

The touch sensor 402 can be flexibly set when actually installed. For example, a telescopic rod penetrating the detection channel is arranged, the telescopic rod is supported through the spring, the end, close to the placement concave position, of the telescopic rod is made to extend out, the contact type sensor 402 is arranged at the other end of the telescopic rod, and therefore when the tray 400 is placed in place, the telescopic rod can be ejected out, the other end of the telescopic rod is abutted to the contact type sensor 402, and detection is achieved. The sensing end of the touch sensor 402 can also be mounted to the side wall of the placement recess via a sensing channel, so that the touch sensor 402 can be triggered when the tray 400 is placed correctly.

To sum up, the utility model discloses can effectively improve the welding precision and the welding quality of miniature steel-shell battery, all fill protective gas from top to bottom of face of weld simultaneously, can guarantee that the welding seam is bright. And the precise peripheral welding device of the utility model can be arranged on a machine tool as a module assembly to form the device with a plurality of same modules as shown in figure 5.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. Accurate peripheral welding set, its characterized in that includes:

the device comprises a bracket, a positioning device and a control device, wherein a tray for placing a workpiece is arranged on the bracket;

the laser welding mechanism is arranged above the tray;

the pressing mechanism is arranged above the tray in a lifting and adjusting mode and used for pressing the workpiece on the tray through descending;

and the blowing mechanism is arranged on the pressing mechanism and used for blowing protective gas to the welding position of the workpiece.

2. The precise peripheral welding device of claim 1, wherein the pressing mechanism is provided with a relief port corresponding to the laser welding mechanism, and the blowing mechanism is provided with a plurality of blowing ports around the circumference of the relief port.

3. The precision peripheral welding apparatus according to claim 2, wherein the air blowing mechanism is provided with:

the runner plate is provided with a stepped port with a small upper part and a large lower part corresponding to the relief port, and a circle of flange plate is formed on the runner plate through the stepped port;

a plurality of air cocks, it is a plurality of the air cock centers on ladder mouth evenly distributed, the air cock is vertical to be installed on the flange board, and the end of giving vent to anger of air cock lower extreme is followed the lower extreme of flange board is stretched out, in order to form the mouth of blowing.

4. The precise peripheral welding device of claim 3, further comprising a negative pressure dust removal mechanism, wherein the negative pressure dust removal mechanism is provided with a plurality of dust removal ports around the relief port.

5. The precision peripheral welding apparatus of claim 4, wherein the negative pressure dust removal mechanism comprises:

the first negative pressure flow channel is arranged in the flow channel plate around the stepped port;

the second negative pressure flow channels are arranged in the flow channel plate, a plurality of second negative pressure flow channels are arranged along the length direction of the first negative pressure flow channels, one end of each second negative pressure flow channel is communicated with the first negative pressure flow channel, and the other end of each second negative pressure flow channel is communicated with the side wall of the stepped port to form the dust removal port;

the third negative pressure flow channel is vertically arranged at the lower end of the flow channel plate and communicated with the first negative pressure flow channel;

and the negative pressure connecting seat is arranged on the support and is positioned below the third negative pressure flow channel, and the negative pressure connecting seat is connected with negative pressure equipment and is used for communicating the third negative pressure flow channel when the third negative pressure flow channel descends along with the pressing mechanism.

6. The precision peripheral welding apparatus according to any one of claims 2 to 5, wherein the pressing mechanism is provided with:

the upper jig is vertically provided with a plurality of guide pillars, the lower ends of the guide pillars penetrate through the bracket, and the yielding position opening is formed in the upper jig;

the jacking springs are sleeved on the guide pillars and used for keeping the upper jig at a position far away from the support in a normal state;

and the first driving assembly is connected with the upper jig and used for controlling the upper jig to move downwards.

7. The precise peripheral welding device of any one of claims 1 to 5, wherein a second driving assembly is arranged on the bracket, and the second driving assembly is arranged on the bracket corresponding to the tray and used for ejecting the tray from the bracket.

8. The precision peripheral welding apparatus of claim 7, wherein the second drive assembly is provided with:

the lifting mounting seat is vertically and slidably arranged on the bracket;

the screw rod is vertically arranged on the lifting installation seat corresponding to the tray, and is in threaded fit with the bracket so as to move up and down relative to the bracket in the rotating process;

and the driving motor is arranged on the lifting mounting seat and is in transmission connection with the screw rod so as to be used for controlling the screw rod to rotate.

9. The precise peripheral welding device of any one of claims 1 to 5, wherein a positioning mechanism is arranged on the support and used for detecting the placing position of the tray.

10. The precise peripheral welding device of claim 9, wherein the tray has two reference edges, the bracket is provided with a placement recess for placing the tray, the bracket is provided with a detection channel at two side walls corresponding to the placement recess and the reference edges, the positioning mechanism is provided with a set of contact sensors corresponding to the two reference edges, and the detection ends of the contact sensors are abutted to the tray through the detection channels.

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