CN216680679U - Ultrasonic welding device - Google Patents
Ultrasonic welding device Download PDFInfo
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- CN216680679U CN216680679U CN202123173896.8U CN202123173896U CN216680679U CN 216680679 U CN216680679 U CN 216680679U CN 202123173896 U CN202123173896 U CN 202123173896U CN 216680679 U CN216680679 U CN 216680679U
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Abstract
The utility model relates to an ultrasonic welding device for welding two plastic parts, comprising: an ultrasonic horn and a blowing member, wherein; ultrasonic welding head: an air inlet and an air outlet are respectively arranged on the ultrasonic welding head, a communication hole is arranged in the ultrasonic welding head, the air outlet is positioned at the welding part of the ultrasonic welding head, the air inlet is positioned at the welding part far away from the ultrasonic welding head, and the air inlet, the communication hole and the air outlet are mutually communicated; and the air blowing piece is used for supplying air to the air inlet so as to solve the technical problem that the welding head is overheated.
Description
Technical Field
The utility model relates to the field of welding of automobile plastic parts, in particular to an ultrasonic welding device.
Background
Chinese patent CN201821500559.0 discloses a flexible ultrasonic welding device, which comprises a fixed rod, an adjusting rod, an angle adjusting block, a frame, a linear guide rail, an ultrasonic transducer, an ultrasonic welding head and a welding cylinder, wherein the adjusting rod is mounted on the fixed rod. The angle adjusting block is arranged on the adjusting rod. The frame is installed on the adjusting rod through the angle adjusting block. The linear guide is installed on the frame, and the linear guide is vertical. The ultrasonic transducer is slidably mounted on the linear guide. The ultrasonic horn is slidably mounted on the linear guide. And the welding cylinder is used for driving the ultrasonic transducer and the ultrasonic welding head to move up and down along the linear guide rail. The flexible ultrasonic welding device is used for automatically welding products, so that the welding precision is high, continuous operation can be realized, and the welding efficiency is high. In addition, because the adjusting rod, the angle adjusting block and the frame are arranged on the adjusting rod through the angle adjusting block, the welding angle of the ultrasonic welding head can be adjusted, and the ultrasonic welding head is suitable for welding with different slopes;
although the utility model can solve the technical problems that high-end automobiles have high requirements on product quality and poor welding can cause difficult subsequent installation, the end part of the ultrasonic welding head can generate a large amount of heat in the ultrasonic welding process, and the service life of the welding head can be influenced if the welding head is not subjected to heat dissipation treatment;
for this reason, there is an urgent need to solve the existing problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problems, an object of the present invention is to provide an ultrasonic welding apparatus to solve the technical problem of overheating of a welding head.
To achieve the above object, an ultrasonic welding apparatus according to the present invention for welding two plastic members includes: an ultrasonic horn and a blowing member, wherein;
ultrasonic welding head: an air inlet and an air outlet are respectively arranged on the ultrasonic welding head, a communication hole is arranged in the ultrasonic welding head, the air outlet is positioned at the welding part of the ultrasonic welding head, the air inlet is positioned at the welding part far away from the ultrasonic welding head, and the air inlet, the communication hole and the air outlet are mutually communicated;
and the air blowing piece is used for supplying air to the air inlet.
An ultrasonic welding apparatus as defined in claim 1, wherein: the air blowing piece comprises an air pump and a connecting pipe, wherein the air pump is arranged on the air blowing piece;
the connecting pipe consists of a hard pipe and a hose, wherein the hard pipe and the hose are communicated with each other, and the free end of the hose is communicated with the air inlet;
and the air outlet of the air pump is communicated with the hard tube.
As a further description of the above technical solution:
the hose is a corrugated pipe.
As a further description of the above technical solution:
the communication hole includes a first hole, a threaded hole, and a second hole, wherein;
a first hole communicating with the air inlet;
a threaded bore in communication with the first bore;
the second hole is communicated with the threaded hole and communicated with the air outlet.
As a further description of the above technical solution:
the gas outlets are distributed on the ultrasonic welding head in an equal circumferential array.
As a further description of the above technical solution:
the ultrasonic welding machine also comprises a six-axis manipulator which is used for driving the ultrasonic welding head to move.
As a further description of the above technical solution:
the ultrasonic welding head comprises an ultrasonic welding head body and a first fixing piece, wherein the ultrasonic welding head body is provided with a first fixing piece;
the air inlet and the air outlet are formed in the ultrasonic welding head body, and the communication hole is formed in the ultrasonic welding head body;
the ultrasonic welding head body is fixedly connected with the first fixing piece;
the ultrasonic welding device also comprises a second fixing piece, a power piece, a displacement sensor, a pressure sensor and a controller, wherein the second fixing piece is fixed on the second fixing piece;
the six-axis manipulator is used for driving the second fixing piece to move;
the power part provides power for the movement of the first fixing part;
the displacement sensor is used for reading the displacement of the first fixing piece;
the pressure sensor is used for reading the pressure of the ultrasonic welding head body;
and the controller is electrically connected with the power part, the displacement sensor, the pressure sensor and the six-axis manipulator.
As a further description of the above technical solution:
the power part is a cylinder, the cylinder body of the cylinder is fixedly connected to the second fixing part, and the piston rod of the cylinder is fixedly connected to the first fixing part.
As a further description of the above technical solution:
the first fixing piece is fixedly provided with a guide rail, and the second fixing piece is provided with a sliding groove matched with the guide rail.
Compared with the prior art, the utility model has the beneficial effects that:
(one) ultrasonic bonding adopts be that high-frequency vibration's mode makes the welding that the molecular layer was formed in the friction between two working of plastics, thereby realize the working of plastics, in this process, thereby because the friction makes the part that is close to the soldered connection produce a large amount of heats, consequently, need dispel the heat to it, inside through at the ultrasonic bonding tool sets up the intercommunicating pore, the piece of blowing blows in gas from the air inlet, blow off by the gas outlet again through the intercommunicating pore, adopt inside radiating mode, great reinforcing the radiating efficiency of ultrasonic bonding tool, compare in outside radiating mode, this kind of radiating efficiency is higher, and here is the working of plastics owing to the application field, and adopt traditional type laser or other electrical heating welding, then can cause the damage to the working of plastics, finally make the welding meaningless.
(II) because ultrasonic bonding's welding principle adopts the mode of vibration to weld, if the connecting pipe of air inlet adopts the hard pipe, then the ultrasonic bonding tool can be because of vibration and the continuous friction that carries on of hard pipe, thereby make the ultrasonic bonding tool temperature of air inlet department higher, thereby influence the life of ultrasonic bonding tool, and adopt the hose, firstly, because the high temperature part of ultrasonic bonding tool is located the welding part, and the welding part is kept away from to the air inlet, therefore, the temperature here is not high, also not damage to the hose, in addition, hose self has elasticity, can be along with the vibration of ultrasonic bonding tool, adaptive drawing.
(III) the hose is albeit having tensile function, but fatigue damage also can appear in long-time tensile hose to make its frequent folding department crack, thereby lead to here gas leakage, and then influence the heat dissipation of ultrasonic bonding tool, this kind of problem of solution can be effectual through adopting the bellows here, the bellows has folding function, it can be along with the vibration of ultrasonic bonding tool, self-adaptation is folding, also can not make the bellows appear fatigue damage in long-time vibration process.
(IV) because the length of ultrasonic bonding tool self is shorter to make the length of intercommunicating pore also shorter, when the cold air that blows in of piece did not cool off the ultrasonic bonding tool completely yet, just flowed from gas outlet department, caused the waste of cold air, the intercommunicating pore plays the gaseous flow time in the intercommunicating pore of reinforcing through setting up the screw hole, thereby makes the stop that cold air can be long-time in the intercommunicating pore, makes heat dissipation and refrigerated efficiency higher.
(V) the gas outlet sets up a plurality of plays and makes radiating gas can be quick flow out in the communicating hole, prevents that it is slow because of flowing out to make the air input of air inlet little, finally influence its radiating efficiency.
And (VI) in order to save labor force and realize automatic processing production, the ultrasonic welding head is clamped by adopting a six-axis manipulator, so that unmanned processing production can be realized.
(VII) in the welding process of the automobile parts, the welding quality requirements of some parts are higher, and the welding layers have specific parameter requirements, if the welding layers are only welded by clamping the ultrasonic welding head by the six-axis manipulator, the welding of two parts can be realized, but the requirement of welding precision can not be met, the high-quality welding process of the parts is met by arranging the controller, and the logic control program of the controller is as follows: ultrasonic wave bonding tool and the mutual butt of spare part of waiting to weld, pressure sensor experiences pressure, thereby transmit for the controller and then control six manipulators stop motion, at this moment, ultrasonic wave bonding tool is located the welding position, then the controller control power spare starts, the motion of the first mounting of power spare drive, until displacement sensor reads the motion numerical value of first mounting, when reaching the default, displacement sensor control power spare stops, at this moment, the layer of ultrasonic wave bonding tool is the anticipated layer, the precision of layer is higher, it is worth noting, the power spare adopts the cylinder, because the motion of cylinder is comparatively stable and corresponding can reach welded required precision rapidly, set up guide rail and spout and play the effect that provides a positioning guide for the removal of first mounting, thereby make welding precision higher.
Drawings
FIG. 1 is a perspective view of an ultrasonic welding apparatus according to the present invention in a state of use;
fig. 2 is a cross-sectional view of an ultrasonic welding apparatus of the present invention.
In the figure: 1. an ultrasonic horn; 11. an ultrasonic horn body; 111. an air inlet; 112. an air outlet; 113. a communicating hole; 1131. a first hole; 1132. a threaded hole; 1133. a second hole; 12. a first fixing member; 121. a guide rail; 2. an air blowing member; 21. an air pump; 22. a connecting pipe; 221. a rigid tube; 222. a hose; 3. a second fixing member; 4. a power member; 5. a displacement sensor; 6. a pressure sensor.
Detailed Description
To explain the technical content, structural features, attained objects and effects of the present invention in detail, embodiments are described below in detail with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the utility model.
The application is mainly applied to the field of plastic part welding, and because the welding object is a plastic part, the welding can not be carried out by adopting laser or other electric heating modes, because the temperature of the welding method is too high, plastic deformation of the plastic part can occur, therefore, for the welding of such parts, the ultrasonic welding mode is usually adopted for welding, the principle of the ultrasonic welding is to realize the welding of the plastic parts by enabling two plastic parts to rub to form a molecular layer in a high-frequency vibration mode, the welding in the mode can effectively prevent the plastic parts from generating plastic deformation, however, in the using process, the ultrasonic welding head 1 is easy to be overheated due to friction, so that the service life of the ultrasonic welding head is influenced, and the overheated ultrasonic welding head 1 can also generate plastic deformation on plastic parts.
Example 1:
the utility model provides an ultrasonic welding device, comprising: ultrasonic horn 1 and air-blowing member 2, wherein:
ultrasonic horn 1: the welding device is used for welding two plastic parts, as shown in fig. 1 and with reference to fig. 2, and includes an ultrasonic welding head body 11 and a base, wherein the ultrasonic welding head body 11 is fixedly connected to the base, in addition, the ultrasonic welding head body 11 is provided with an air inlet 111, an air outlet 112 and a communication hole 113, wherein the air inlet 111, the communication hole 113 and the air outlet 112 are communicated with each other, and the air outlet 112 is located at a welding portion of the ultrasonic welding head body 11.
The air blowing piece 2: the ultrasonic horn device is used for providing cold air for the air inlet 111 and comprises an air pump 21 and a connecting pipe 22, wherein the air pump 21 is fixedly connected to the ultrasonic horn body 11, and an air outlet 112 of the air pump 21 is communicated with the air inlet 111 of the ultrasonic horn body 11 through the connecting pipe 22.
The working mode of the utility model is described as follows:
ultrasonic bonding tool body 11 is when welding two working of plastics, the piece of blowing 2 is through providing air conditioning to ultrasonic bonding tool body 11's air inlet 111, thereby can reach the purpose for ultrasonic bonding tool body 11 cooling, ultrasonic bonding tool body 11 is through setting up air inlet 111 in addition, intercommunicating pore 113 and gas outlet 112, make the circulation gas circuit of air conditioning be in ultrasonic bonding tool body 11, cool down the heat dissipation from ultrasonic bonding tool body 11 inside promptly, so, compare in outside cooling, the effect of inside cooling is obvious be superior to outside effect, to sum up, adopt this kind of mode can effectually solve the too high problem of welding part temperature of ultrasonic bonding tool body 11.
Example 2:
although the problem of overhigh temperature of the ultrasonic horn body 11 can be solved by adopting the above mode, in the actual operation process, because ultrasonic welding is adopted, the vibration frequency is higher, and the damage to the connecting pipe 22 is larger in the long-time use process, so that the air leakage condition occurs at the connecting pipe 22, and the heat dissipation of the welding part of the ultrasonic horn body 11 is influenced, in order to solve the problem, the utility model provides another preferable technical scheme:
the connecting pipe 22, including the hard pipe 221 and the bellows, the hard pipe 221 and the bellows are communicated with each other, the air outlet 112 of the hard pipe 221 and the air pump 21 are communicated with each other, the bellows and the air inlet 111 of the ultrasonic horn body 11 are communicated with each other, and the rest of the arrangement is the same as that in embodiment 1.
The working mode of the utility model is described as follows:
set up the bellows and play and can vibrate along with ultrasonic bonding tool body 11, carry out self-adaptation vibration to can not appear because of producing a large amount of heats because of the friction between bellows and the 11 air inlets 111 of ultrasonic bonding tool body, thereby influence ultrasonic bonding tool body 11's use, the bellows still has folding function in addition, even the bellows carries out high-frequency vibration along with the vibration of ultrasonic bonding tool body 11, the bellows can not appear and produces fatigue damage because of the vibration, thereby the condition of gas leakage appears.
Example 3:
in either example 1 or example 2, there is a case where the heat dissipation is insufficient, which is caused by the short length of the ultrasonic horn body 11 itself, so that the communication hole 113 is also short, and the cold air from the air inlet 111 of the ultrasonic horn body 11 stays in the ultrasonic horn body 11 for a short time, so that the above-described case occurs, and for this reason, another preferable embodiment is given:
communication hole 113: the structure comprises a first hole 1131, a threaded hole 1132 and a second hole 1133, wherein the first hole 1131, the threaded hole 1132 and the second hole 1133 are communicated with each other, and the rest arrangement is the same as that in embodiment 1 or embodiment 2.
The working mode of the utility model is as follows:
through setting up the intercommunicating pore 113 to screw hole 1132 to can be so that the walking route of cold wind is longer, and then can realize the purpose to the abundant heat dissipation and the cooling of ultrasonic bonding tool body 11.
It is worth noting that: in order to enhance the heat dissipation efficiency, the number of the air outlets 112 can be four, the four air outlets 112 are arranged on the ultrasonic welding head body 11 in an equal circumferential array, and the air can flow out of the communication hole 113 quickly by using the method, so that the air is prevented from flowing out slowly, the air inflow of the air inlet 111 is small, and the heat dissipation efficiency is influenced finally.
Example 4:
in embodiments 1 to 3, although the problem of heat dissipation of the ultrasonic horn body 11 can be effectively solved, the device can achieve the purpose of heat dissipation of the ultrasonic horn body 11 during welding and fixing of two plastic parts, but cannot meet the requirement of automatic welding, and the efficiency of welding is obviously low because only a manual welding mode is adopted, so that the utility model provides another optimized technical scheme:
still include six manipulators: the six-axis manipulator is used for driving the ultrasonic welding head 1 to move, the output end of the six-axis manipulator is not shown in the figure and is fixedly connected with the base of the ultrasonic welding head 1, so that the ultrasonic welding head 1 can move in any direction in space, and unmanned automatic welding can be realized.
Example 5:
in embodiment 4, although unmanned machining can be achieved, it is obvious that the requirement of production and machining cannot be met by adopting a six-axis manipulator for welding high-precision plastic parts, and therefore, the utility model provides another optimized technical scheme:
the device also comprises an air cylinder, a fixed seat, a displacement sensor 5, a pressure sensor 6 and a controller, wherein the air cylinder is arranged on the fixed seat;
fixing a base: the supporting cylinder is used for supporting the cylinder and is fixedly connected with the six-axis manipulator.
A cylinder: be used for driving base relative movement on the fixing base, the cylinder and the fixing base fixed connection of cylinder, the gas pole and the 6 fixed connection of pressure sensor of cylinder.
The pressure sensor 6: the ultrasonic welding head is used for reading the pressure generated when the ultrasonic welding head body 11 is abutted against the plastic part and is fixedly connected with the base.
The displacement sensor 5: the displacement reading device is used for reading the displacement of the base and is fixedly connected with the base.
A controller: the six-axis manipulator is used for controlling the cylinder and the six-axis manipulator to move according to a logic sequence and is respectively electrically connected with the cylinder, the displacement sensor 5, the pressure sensor 6 and the six-axis manipulator.
Further to note are: the displacement sensor 5 and the pressure sensor 6 are both conventional electrical components, so that no excessive statement is made herein, and the controller here merely functions as a control switch, and firstly, the control principle is simple, and secondly, the object of the present invention is to protect the combination of the above-mentioned components, and how the controller controls the start and stop of the cylinder and the six-axis manipulator is not protected, so that a detailed control circuit diagram of the controller is not described herein.
The logic control program of the controller is as follows: when six manipulator centre gripping fixing bases remove, ultrasonic bonding tool body 11 with treat welded working of plastics butt, at this moment, pressure sensor 6 atress response goes out pressure, when pressure reaches the default, pressure sensor 6 transmission signal gives the controller, the controller and then controls the manipulator and close, at this moment, ultrasonic bonding tool body 11 has moved to on the welding station, the controller simultaneous control cylinder starts, the cylinder promotes the base motion, thereby realize the welding of ultrasonic bonding tool body 11 to the working of plastics, when displacement sensor 5 response base's displacement volume and default are equal, displacement sensor 5 transmission signal gives the controller, the controller and then control cylinder stop, at this moment, the welding layer of working of plastics is the anticipated welding layer, welding precision is higher.
In addition, in order to optimize the technical scheme of embodiment 5, can set up guide rail 121 in the bottom of base is fixed, set up the spout on the fixing base, place guide rail 121 in the spout, so, can make the base realize directional motion under the effect of cylinder, and then make the welded precision higher.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. An ultrasonic welding apparatus for welding between two plastic parts, comprising: an ultrasonic welding head (1) and a blowing member (2), wherein;
ultrasonic horn (1): an air inlet (111) and an air outlet (112) are respectively arranged on the ultrasonic welding head, a communication hole (113) is arranged in the ultrasonic welding head, the air outlet (112) is positioned at the welding part of the ultrasonic welding head (1), the air inlet (111) is positioned at the welding part far away from the ultrasonic welding head (1), and the air inlet (111), the communication hole (113) and the air outlet (112) are communicated with each other;
and the air blowing piece (2) is used for supplying air to the air inlet (111).
2. An ultrasonic welding apparatus as defined in claim 1, wherein: the blowing part (2) comprises an air pump (21) and a connecting pipe (22), wherein;
the connecting pipe (22) is composed of a hard pipe (221) and a hose (222), wherein the hard pipe (221) and the hose (222) are communicated with each other, and the free end of the hose (222) is communicated with the air inlet (111);
and the air pump (21) is provided with an air outlet (112) communicated with the hard tube (221).
3. An ultrasonic welding apparatus as defined in claim 2, wherein: the hose (222) is a corrugated pipe.
4. An ultrasonic welding apparatus as defined in claim 1, wherein: the communication hole (113) includes a first hole (1131), a threaded hole (1132), and a second hole (1133), wherein;
a first hole (1131) communicating with the air inlet (111);
a threaded bore (1132) in communication with the first bore (1131);
a second bore (1133), and the threaded bore (1132) communicate with each other, and communicate with the air outlet (112) with each other.
5. An ultrasonic welding apparatus as defined in claim 4, wherein: the number of the air outlets (112) is multiple, and the air outlets (112) are distributed on the ultrasonic welding head (1) in an equal circumferential array.
6. An ultrasonic welding apparatus as defined in claim 1, wherein: the ultrasonic welding machine further comprises a six-axis manipulator which is used for driving the ultrasonic welding head (1) to move.
7. An ultrasonic welding apparatus as defined in claim 6, wherein: the ultrasonic welding head (1) comprises an ultrasonic welding head body (11) and a first fixing piece (12), wherein;
the ultrasonic welding head comprises an ultrasonic welding head body (11), wherein the air inlet (111) and the air outlet (112) are formed in the ultrasonic welding head body (11), and the communication hole (113) is formed in the ultrasonic welding head body (11);
the ultrasonic welding head comprises a first fixing piece (12), wherein the ultrasonic welding head body (11) is fixedly connected with the first fixing piece (12);
the ultrasonic welding device also comprises a second fixing piece (3), a power piece (4), a displacement sensor (5), a pressure sensor (6) and a controller, wherein the second fixing piece is fixed on the second fixing piece;
the first fixing part (12) is arranged on the second fixing part (3) in an oriented reciprocating manner, and the six-axis manipulator is used for driving the second fixing part (3) to move;
the power part (4) provides power for the movement of the first fixing part (12);
a displacement sensor (5) for reading the displacement of the first fixing member (12);
a pressure sensor (6) for reading the pressure of the ultrasonic horn body (11);
and the controller is electrically connected with the power part (4), the displacement sensor (5), the pressure sensor (6) and the six-axis manipulator.
8. An ultrasonic welding apparatus as defined in claim 7, wherein: the power part (4) is an air cylinder, the cylinder body of the air cylinder is fixedly connected to the second fixing part (3), and the piston rod of the air cylinder is fixedly connected with the first fixing part (12).
9. An ultrasonic welding apparatus according to claim 7 or 8, wherein: the first fixing piece (12) is fixedly provided with a guide rail (121), and the second fixing piece (3) is provided with a sliding groove matched with the guide rail (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123173896.8U CN216680679U (en) | 2021-12-16 | 2021-12-16 | Ultrasonic welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123173896.8U CN216680679U (en) | 2021-12-16 | 2021-12-16 | Ultrasonic welding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216680679U true CN216680679U (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123173896.8U Active CN216680679U (en) | 2021-12-16 | 2021-12-16 | Ultrasonic welding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216680679U (en) |
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2021
- 2021-12-16 CN CN202123173896.8U patent/CN216680679U/en active Active
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