CN211441208U - Rotary type ultrasonic welding device capable of vibrating in horizontal direction - Google Patents
Rotary type ultrasonic welding device capable of vibrating in horizontal direction Download PDFInfo
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- CN211441208U CN211441208U CN201921485363.3U CN201921485363U CN211441208U CN 211441208 U CN211441208 U CN 211441208U CN 201921485363 U CN201921485363 U CN 201921485363U CN 211441208 U CN211441208 U CN 211441208U
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Abstract
The utility model provides a rotary ultrasonic welding device vibrating in the horizontal direction, which comprises an ultrasonic generator, a high-frequency wire, an electric slip ring and a transducer which are connected in sequence; the welding head is fixedly connected with the transducer; and a positioning and transmission mechanism is arranged at a fixed node between the transducer and the welding head and is driven by a servo motor to drive the welding head and the transducer to rotate. The utility model discloses a rotary motion adds horizontal vibration's mode, and bonding tool horizontal direction is rubbed with the hands and is moved, can not produce the high frequency striking with the base for welding strength is higher, and is more even, and consumption power is lower, can not produce the condition that electric current transships. Especially can not solve or the poor material of welding property to some perpendicular welding mode, the utility model discloses can provide the solution.
Description
Technical Field
The utility model relates to an ultrasonic welding device especially relates to an ultrasonic welding device of rotation type horizontal direction vibration.
Background
The ultrasonic plastic welding is that 50Hz/60Hz power frequency alternating current is converted into 20kHz, 30kHz, 40kHz and other high-frequency high-voltage currents through an ultrasonic generator, piezoelectric ceramics are excited to generate high-frequency vibration, the amplitude of the vibration is amplified through an amplitude modulator, the high-frequency vibration is transmitted to a welded material through a welding head, plastic molecules are excited to move, and the molecules collide and rub with each other, generate heat rapidly and are fused into a whole.
The traditional ultrasonic plastic welding adopts a vertical vibration mode, and the ultrasonic high-frequency vibration excites plastic molecules to move and instantly melt by friction to achieve the welding effect from the surface. And a vertical vibration mode is adopted, and welding is instantly finished by high-frequency vibration of the welding head and extrusion and impact of welding materials. And the following problems need to be noted: 1) a dynamic servo control system needs to be matched, the control logic is complex, and the cost is high; 2) is not suitable for the application with the thickness of less than 0.05mm after welding; 3) the method has the following advantages that the method has limitation on materials, and certain materials cannot be welded or are welded unstably; 4) the production speed is limited and cannot be expanded; 5) certain types of special applications, such as welding in narrow, small spaces, cannot be satisfied.
Taking hot air non-woven fabric welding as an example: the traditional welding mode has very low welding strength, 3-5N of a pull per inch test, and needs higher amplitude and higher pressure, thereby causing too high current feedback and frequent overload of equipment. And adopt the utility model discloses a welding mode per inch pulling force can reach more than 17N, because the horizontal direction vibration can not produce the striking with the die block, does not have the problem of electric current overload to appear.
However, the amplitude of the ultrasonic output is usually 60-80um, and when the final thickness of the welding material is less than 0.06mm, the amplitude can directly act on the base (usually a metal material), which directly causes a series of problems of poor welding strength, too high current, overload and damage of equipment, and the like.
Specifically, the following problems occur in the high-speed continuous welding mode by using the vertical vibration mode:
1) the welding speed is limited, ultra-high speed welding cannot be realized, the strength requirement cannot be met, and the welding is unstable.
2) The equipment is easy to overload and damage, and when ultrathin materials are welded, the gap between a welding head and a metal bottom roller is smaller than the vibration amplitude value, high current can be generated, and the equipment is overloaded and damaged.
3) The horn and backing roll are subject to wear or damage.
4) The welding gap needs to be controlled in real time by adopting a servo mode, the requirements on the equipment precision and the material pitch are very high, the debugging period is long, and the difficulty is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides an ultrasonic welding device of rotation type horizontal direction vibration adopts rotary motion to add horizontal vibration's mode, only needs to apply certain pressure when the ultrasonic wave is opened and just can satisfy the welding of ultra-thin material, adopts horizontal direction vibrations can not produce direct striking with metal base, can satisfy the small gap, ultra-thin material welding, perfect solution current overload's problem.
The technical scheme is as follows:
a rotary ultrasonic welding device vibrating in the horizontal direction comprises an ultrasonic generator, a high-frequency wire, an electric slip ring and a transducer which are connected in sequence;
the welding head is fixedly connected with the transducer;
and a positioning and transmission mechanism is arranged at a fixed node between the transducer and the welding head and is driven by a servo motor to drive the welding head and the transducer to rotate.
The positioning and transmission mechanism is provided with a transmission wheel, the transmission wheel is fixedly connected with the welding head, and the transmission wheel is driven by a servo motor.
The positioning and transmission mechanism is provided with a first bearing, the outer side of the first bearing is fixedly connected with the peripheral device, and the inner side of the first bearing is fixedly connected with a fixed node.
The inner side of the first bearing is integrally arranged with the driving wheel.
Besides the welding head fixedly connected with the transducer, an opposite secondary welding head is arranged, the welding head and the secondary welding head which are arranged oppositely can carry out welding simultaneously, the secondary welding head is driven to rotate through a second bearing, the outer side of the second bearing is fixedly connected with the peripheral device, and the inner side of the second bearing is fixedly connected with a fixed node of the secondary welding head.
The welding head is a roller type welding head and can move along the welding direction.
The transmission wheel adopts a gear, and a driving shaft of the servo motor drives the transmission wheel to rotate through a chain.
Multiple sets of rotary, horizontally vibrating ultrasonic welding devices can be integrated side-by-side in a single welding unit.
The secondary welding head adopts a roller type welding head and can move along the welding direction.
The welding head and the secondary welding head are identical in structure.
The utility model discloses a rotary motion adds horizontal vibration's mode, and bonding tool horizontal direction is rubbed with the hands and is moved, can not produce the high frequency striking with the base for welding strength is higher, and is more even, and consumption power is lower, can not produce the condition that electric current transships. Especially to some perpendicular welding methods can not solve or the poor material of welding property (like hot-blast non-woven fabrics, plastic film, filtration membrane, aluminium membrane etc.), the utility model discloses perfect solution can be provided. If hot-blast non-woven fabrics adopts the technique on the existing market to accomplish about 100M/MIN, and adopt the utility model discloses can expand to 1000M/Min of per minute, and welding strength is higher, and welding quality is more stable.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 is a schematic view of the structure of an embodiment 1 of the rotary type horizontally vibrating ultrasonic welding apparatus according to the present invention;
fig. 2 is a schematic view of the structure of embodiment 2 of the rotary horizontal direction vibration ultrasonic welding apparatus according to the present invention;
fig. 3 is a schematic diagram of the working principle according to the present invention.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, the utility model provides an ultrasonic welding device of rotation type horizontal direction vibration, including supersonic generator 1, high frequency line 2, electric slip ring 3, the transducer 4 that connect gradually, transducer 4 and bonding tool 5 fixed connection are provided with drive wheel 7 between transducer 4 and the bonding tool 5, and drive wheel 7 passes through servo motor and drives, and servo motor's drive shaft passes through belt, chain or other transmission and drives drive wheel 7 rotatory. Thereby realizing the high-frequency vibration of the welding head 5 in the rotating and horizontal directions and achieving the purpose of welding.
In this embodiment, the transmission wheel 7 is a gear, and the driving shaft of the servo motor drives the transmission wheel 7 to rotate through a chain.
A fixed node is arranged in the direction from the welding head 5 to the transducer 4, the fixed node does not have high-frequency vibration in the horizontal direction, a bearing 6 is sleeved on the fixed node, the inner side of the bearing 6 is fixedly connected with the welding head 5 through the fixed node, the outer side of the bearing 6 is fixedly connected with a peripheral device, and a fixed box fixed with the peripheral device is arranged outside the bearing 6.
The bearing 6 and the driving wheel 7 form a positioning and driving mechanism 10.
The embodiment of fig. 1 adopts a full-wave design, the welding head 5 and the secondary welding head 8 are arranged oppositely, the bearing 6 is arranged on the outer side of the welding head 5, the secondary welding head 8 on the side without the transducer 4 is used as a driven wheel, the secondary bearing 9 is arranged on the outer side of the welding head 8, and the bearing 6 and the secondary bearing 9 are identical in structure.
It may also be designed as a half-wave design as shown in fig. 2.
The utility model discloses a roller type bonding tool can follow the welding direction motion, and is not high to welding die cooperation required precision, and cooperation plane or gyro wheel structure can all use. Multiple sets of rotary, horizontally vibrating ultrasonic welding devices can be integrated side-by-side in a single welding unit as desired.
The working process of the utility model is as follows:
the ultrasonic generator 1 supplies high-frequency current through the electric slip ring 3 to the transducer 4 through the high-frequency wire 2, and the transducer 4 generates high-frequency vibration and is connected to the welding head 5 through screws. The utility model discloses an installation and the fixing of gear 7 are realized at one or two node position installation bearings 6 to drive gear 7 through servo motor and rotate. Thereby realizing the high-frequency vibration in the rotating and horizontal directions and achieving the purpose of welding.
The working principle of the utility model is as follows: supersonic generator 1 is with 220V, 50/60Hz electric current converts 20000/30000/40000 HZ's high frequency high tension current, conveys electric sliding ring 3 through high frequency line 2, and electric sliding ring 3 carries the electric energy to transducer 4 production high frequency vibration, and transducer 4 is carried high frequency vibration for bonding tool 5 again and is carried out amplitude amplification and output horizontal direction's high frequency vibration, as shown in fig. 3, the utility model discloses be rotary motion by the servo motor drive that location and drive mechanism 10 are connected in high frequency vibration, transducer 4 and bonding tool 5 rotate, and the vibration direction is D, and the rotation direction is W, and rolling contact and exerting pressure and high frequency vibration give by welded material under the pressure effect of plus, excitation material molecule high speed motion, instantaneous melting and solid as an organic whole each other.
The traditional welding adopts a vertical vibration mode, and when the set amplitude is larger than the gap between a welding head and a bottom die in the welding process, the high-frequency vibration of the welding head directly impacts the bottom die, so that ground load or damage is caused. Relatively speaking, the utility model discloses a horizontal direction's vibration mode, the size of amplitude does not receive the influence of weld gap size basically, and in high-frequency vibration, the utility model provides a rotary motion has reduced local contact time overlength and has leaded to overwelding or damage.
The utility model has the advantages of it is following:
1) the welding head, the amplitude modulator and the positioning ring are designed in an integrated mode, and the joint is supported by the mounting bearing seat, so that the balance and stability are achieved.
2) And welding in a mode of vibration in the horizontal direction.
3) Use high slip ring of returning do the utility model discloses the circular telegram realizes the welding when high-speed rotatory.
4) Full wave and half wave designs may be used.
5) The welding method can be applied to welding of ultrathin materials, and the welding method comprises but is not limited to non-woven fabrics, filtering membranes, plastic films, metal films and the like.
The following is a related term explanation of the present invention:
an ultrasonic generator: the ultrasonic generator module is composed of an ultrasonic generator module, a control system and a user interface. The main function of the ultrasonic generator module is to convert 50Hz/60Hz power frequency alternating current into 20kHz, 30kHz, 40kHz and 60kHz electric energy.
The transducer: ultrasonic electric energy is transmitted to the energy converter through the ultrasonic generator, so that high-frequency electric energy is oscillated and converted into mechanical vibration with the same frequency. The core of the transducer is piezoelectric ceramics, and when the transducer is connected with an alternating current power supply, the piezoelectric ceramics alternately expand and contract to convert electric energy into mechanical energy.
An amplitude modulator: the success of the ultrasonic energy collection depends on the correctness of the amplitude of the horn surface movement, which depends to a large extent on the size and pattern of the workpieces to be welded. The amplitude modulator may be used as a mechanical transformer to increase or decrease the amplitude of vibrations applied to the workpiece by the weld head.
A welding head: the horn is selected or designed for different welding applications to apply pressure and vibration uniformly to the work piece to be welded. Typically, the horn is mounted to the horn as part of an ultrasonic assembly, or the horn and horn are integrated, for transmitting ultrasonic vibrations from the transducer to the workpiece.
Amplitude: the displacement difference of peak-to-peak movement generated by the transducer, the amplitude modulator and the end face of the welding head, the amplitude is designed according to the melting temperature and the melting point of the material, and the material with higher melting point needs correspondingly higher amplitude. Usually expressed on the device as a percentage of the maximum amplitude. The amplitude is the most critical parameter for welding, and the amplitude can directly determine the welding quality.
Vibration direction: the vibration direction of ultrasonic welding is classified into vertical direction vibration, horizontal direction vibration, reciprocating torsional vibration, and the like.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an ultrasonic welding device of rotation type horizontal direction vibration which characterized in that: the ultrasonic generator, the high-frequency wire, the electric slip ring and the transducer are sequentially connected;
the welding head is fixedly connected with the transducer;
the positioning transmission mechanism is driven by a servo motor to drive the welding head and the transducer to rotate.
2. The rotary horizontally vibrating ultrasonic welding apparatus of claim 1, wherein: the positioning transmission mechanism is provided with a transmission wheel, the transmission wheel is fixedly connected with the welding head, and the transmission wheel is driven by the servo motor.
3. The rotary horizontally vibrating ultrasonic welding apparatus of claim 2, wherein: the positioning transmission mechanism is provided with a first bearing, the outer side of the first bearing is fixedly connected with a peripheral device, and the inner side of the first bearing is fixedly connected with the fixed node.
4. The rotary horizontally vibrating ultrasonic welding apparatus of claim 3, wherein: the inner side of the first bearing and the driving wheel are integrally arranged.
5. The rotary horizontally vibrating ultrasonic welding apparatus of claim 3, wherein: besides the welding head fixedly connected with the transducer, an opposite secondary welding head is arranged, the welding head and the secondary welding head which are arranged oppositely can carry out welding simultaneously, the secondary welding head is driven to rotate through a second bearing, the outer side of the second bearing is fixedly connected with the peripheral device, and the inner side of the second bearing is fixedly connected with a fixed node of the secondary welding head.
6. A rotary horizontally vibrating ultrasonic welding apparatus as set forth in any one of claims 1 to 5 wherein: the welding head is a roller type welding head and can move along the welding direction.
7. The rotary horizontally vibrating ultrasonic welding apparatus of claim 4 wherein: the transmission wheel adopts a gear, and a driving shaft of the servo motor drives the transmission wheel to rotate through a chain.
8. The rotary horizontally vibrating ultrasonic welding apparatus of claim 6 wherein: multiple sets of rotary, horizontally vibrating ultrasonic welding devices can be integrated side-by-side in a single welding unit.
9. The rotary horizontally vibrating ultrasonic welding apparatus of claim 5, wherein: the secondary welding head adopts a roller type welding head and can move along the welding direction.
10. The rotary horizontally vibrating ultrasonic welding apparatus of claim 6 wherein: the welding head and the secondary welding head are identical in structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921485363.3U CN211441208U (en) | 2019-09-05 | 2019-09-05 | Rotary type ultrasonic welding device capable of vibrating in horizontal direction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921485363.3U CN211441208U (en) | 2019-09-05 | 2019-09-05 | Rotary type ultrasonic welding device capable of vibrating in horizontal direction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113001993A (en) * | 2021-03-01 | 2021-06-22 | 上海骄成机电设备有限公司 | Ultrasonic welding equipment and ultrasonic welding sewing machine |
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2019
- 2019-09-05 CN CN201921485363.3U patent/CN211441208U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113001993A (en) * | 2021-03-01 | 2021-06-22 | 上海骄成机电设备有限公司 | Ultrasonic welding equipment and ultrasonic welding sewing machine |
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