Transducer with heat dissipation function

Abstract

The utility model discloses a transducer with a heat dissipation function. The transducer comprises a shell, a lower pressing block, an upper pressing block, piezoelectric ceramics and a heat dissipation fan, an air inlet connected with the mounting cavity penetrates through the lower end of the shell, and an air outlet communicated with the mounting cavity is formed in the side wall of the upper end of the shell; the heat dissipation fan is arranged in the installation cavity and located below the lower pressing block in cooperation with the heat dissipation fan, and the heat dissipation fan corresponds to the air inlet in position, so that when the energy converter works, external air can be sucked from the air inlet through the heat dissipation fan, and then the air is exhausted through the air outlet; in the process, the heat generated in the transducer during working can be taken out, so that the heat dissipation performance is better; the temperature rise in the transducer caused by heat accumulation in the transducer is avoided, the working efficiency of the transducer is ensured, meanwhile, the internal structure of the transducer is effectively prevented from being damaged by high temperature, and the service life of the transducer is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field technology of ultrasonic welding especially is a transducer with heat dissipation function. BACKGROUND

[0002] Ultrasonic welding is through ultrasonic generator 50 / 60 hertz current is converted into 15, 20, 30 or 40KHz electric energy. The high frequency electric energy of conversion is converted into the mechanical movement of equal frequency again through transducer, and then the mechanical movement is transmitted to the welding head through a set of amplitude changing amplitude lever device. The welding head transmits the vibration energy received to the joint of the workpiece to be welded, and in the area, the vibration energy is converted into heat energy by friction, and the plastic is melted. Ultrasonic waves can not only be used to weld hard thermoplastic plastics, but also can process fabrics and films, and can also be used for welding of metal. The transducer is an important component for providing energy to the ultrasonic welding head.

[0003] The existing transducer does not have the function of heat dissipation. In the work of some transducers with large power, a large amount of heat is generated. The heat is accumulated in the transducer and cannot be quickly dissipated. When the temperature inside the transducer is higher and higher, not only the working efficiency of the transducer is affected, but also the internal structure of the transducer is easily damaged, thereby reducing the service life of the transducer. Therefore, it is necessary to further improve the structure of the existing transducer. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a transducer with heat dissipation function, which can effectively solve the problems of poor heat dissipation performance, heat accumulation, influence on working efficiency and short service life of the existing transducer.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A transducer with heat dissipation function, comprising a shell, a lower pressing block, an upper pressing block, a piezoelectric ceramic and a cooling fan, the shell has an installation cavity, the lower end of the shell penetrates a air inlet connected with the installation cavity, and the side wall of the upper end of the shell is provided with an air outlet connected with the installation cavity; the lower pressing block is arranged in the installation cavity; the upper pressing block is arranged in the installation cavity and located above the lower pressing block; the piezoelectric ceramic is arranged in the installation cavity and clamped between the lower pressing block and the upper pressing block, and the upper pressing block and the lower pressing block are pressed tightly on the upper and lower surfaces of the piezoelectric ceramic respectively; the cooling fan is arranged in the installation cavity and located below the lower pressing block, and the cooling fan corresponds to the position of the air inlet.

[0007] As a preferred scheme, the installation cavity is provided with an upper and lower opening, the shell comprises a bottom cover, the bottom cover is arranged on the shell and covers the lower end opening of the installation cavity, the air inlet is arranged on the bottom cover, and the upper pressing block covers the upper end opening of the installation cavity.

[0008] As a preferred scheme, the inner side wall of the installation cavity is inwardly recessed with a supporting portion, the upper pressing block is integrally outwardly protruded with a positioning portion matched with the supporting portion, and the lower end surface of the positioning portion abuts against the upper end surface of the supporting portion.

[0009] As a preferred scheme, the lower pressing block is internally provided with a first tightening hole, the upper pressing block is internally provided with a second tightening hole matched with the first tightening hole, a tightening bolt is sequentially arranged through the first tightening hole and the second tightening hole to tighten the upper pressing block and the lower pressing block together, and the piezoelectric ceramic is internally provided with a through hole for the tightening bolt to pass through.

[0010] As a preferred scheme, the side wall of the installation cavity is penetrated with a wire through hole for connecting the heat dissipation fan and the piezoelectric ceramic with the outside, and the wire through hole is located below the side of the heat dissipation fan.

[0011] As a preferred scheme, the heat dissipation fan is fixedly arranged in the installation cavity through a mounting plate, the mounting plate is fixedly arranged on the inner side wall of the installation cavity, and a plurality of through grooves penetrating the upper and lower end surfaces of the mounting plate are arranged on the peripheral edge of the mounting plate.

[0012] As a preferred scheme, the air inlet is a plurality of air inlets arranged along the annular interval, and correspondingly, the air outlet is a plurality of air outlets arranged along the peripheral edge of the side wall of the installation cavity.

[0013] The utility model discloses have obvious advantages and beneficial effects compared with prior art, specifically speaking, from the above technical scheme can know:

[0014] Through the air inlet of connecting installation cavity that the lower end of shell is penetrated, the air outlet that the side wall of shell upper end is provided with is communicated installation cavity, and cooperate the heat dissipation fan that is arranged in installation cavity and is located the lower side of lower pressing block, the heat dissipation fan and air inlet position correspond, so that when the transducer works, can through the heat dissipation fan and inhale external air from air inlet, and then air is discharged through air outlet, in this process, can take out the heat of transducer inside work and produce, and the heat dissipation performance is better, avoid the heat accumulation in transducer inside and make transducer internal temperature rise, guarantee the work efficiency of transducer, simultaneously effectively prevent high temperature damage the structure in transducer inside, effectively prolong the service life of transducer.

[0015] In order to more clearly set forth the structural features and functions of the utility model, the utility model will be described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a three-dimensional structure schematic view of a preferred embodiment of the utility model;

[0017] Fig. 2 is another angle three-dimensional structure schematic view of a preferred embodiment of the utility model;

[0018] Fig. 3 is a disassembled state schematic view of a preferred embodiment of the utility model;

[0019] Fig. 4 is a cross section schematic view of a preferred embodiment of the utility model.

[0020] Explanation of the attached drawing:

[0021] 10, shell 101, installation cavity

[0022] 102, air inlet 103, air outlet

[0023] 104, wire hole

[0024] 11, bottom cover 12, support part

[0025] 20, lower pressing block 201, first tightening hole

[0026] 30, upper pressing block 301, second tightening hole

[0027] 31, positioning part 32, tightening bolt

[0028] 40, piezoelectric ceramic 401, through hole

[0029] 50, heat dissipation fan 501, through slot

[0030] 51, mounting plate. Specific implementation

[0031] Please refer to Figs. 1 to 4 It shows the specific structure of a preferred embodiment of the utility model, which includes shell 10, lower pressing block 20, upper pressing block 30, piezoelectric ceramic 40 and heat dissipation fan 50.

[0032] The shell 10 has a mounting cavity 101, the lower end of the shell 10 penetrates the air inlet 102 connected to the mounting cavity 101, and the side wall of the upper end of the shell 10 is provided with the air outlet 103 communicating with the mounting cavity 101. In this embodiment, the mounting cavity 101 is provided with an upper and lower opening, the shell 10 comprises a bottom cover 11, the bottom cover 11 is arranged on the shell 10 and covers the lower end opening of the mounting cavity 101, the air inlet 102 is arranged on the bottom cover 11, and the bottom cover 11 is arranged on the shell 10. The installation process of the lower pressing block 20, the upper pressing block 30, the piezoelectric ceramic 40 and the cooling fan 50 in the mounting cavity 101 is facilitated. The inner side wall of the mounting cavity 101 is concave inwardly and provided with a support portion 12. The mounting cavity 101 is provided with a wire hole 104 for connecting the piezoelectric ceramic 40 and the cooling fan 50 with the outside. The air inlet 102 is a plurality of annularly spaced air inlets, and the air outlet 103 is a plurality of air outlets spaced along the peripheral edge of the side wall of the mounting cavity 101. The plurality of air inlets 102 and air outlets 103 ensure sufficient air volume and further improve the efficiency of heat dissipation.

[0033] The lower pressing block 20 is arranged in the mounting cavity 101; in this embodiment, the lower pressing block 20 is provided with a first tightening hole 201.

[0034] The upper pressing block 30 is arranged in the mounting cavity 101 and located above the lower pressing block 20; in this embodiment, the upper pressing block 30 covers the upper end opening of the mounting cavity 101. The upper pressing block 30 is integrally provided with a positioning portion 31 outwardly matched with the support portion 12, and the lower end surface of the positioning portion 31 abuts against the upper end surface of the support portion 12. The support portion 12 can limit the position of the upper pressing block 30 to prevent the upper pressing block 30 from being shifted up and down in the mounting cavity 101, thereby ensuring the stability of the overall structure. The upper pressing block 30 is provided with a second tightening hole 301 matched with the first tightening hole 201, and a tightening bolt 32 penetrates the first tightening hole 201 and the second tightening hole 301 in sequence to tighten the upper pressing block 30 and the lower pressing block 20 together.

[0035] The piezoelectric ceramic 40 is arranged in the mounting cavity 101 and clamped between the lower pressing block 20 and the upper pressing block 30, and the upper pressing block 30 and the lower pressing block 20 are respectively pressed against the upper and lower surfaces of the piezoelectric ceramic 40; in this embodiment, the piezoelectric ceramic 40 is provided with a through hole 401 for the tightening bolt 32 to penetrate.

[0036] The heat dissipation fan 50 is arranged in the mounting cavity 101 and below the lower pressing block 20, the heat dissipation fan 50 corresponds to the air inlet 102, when the heat dissipation fan 50 works, external air can be sucked into the mounting cavity 101 through the air inlet 102, then passes through the piezoelectric ceramic 40, and then is discharged outward through the air outlet 103, meanwhile, heat generated by the piezoelectric ceramic 40 when working is taken out, so that the heat dissipation function is realized.

[0037] The utility model discloses the design emphasis lies in: the lower end of the shell is penetrated with the air inlet of connecting mounting cavity, and the lateral wall of the upper end of the shell is equipped with the air outlet of communicating mounting cavity, and the heat dissipation fan is arranged in the mounting cavity and below the lower pressing block, the heat dissipation fan corresponds to the air inlet, so that when the transducer works, external air can be sucked through the air inlet by the heat dissipation fan, and the air is discharged through the air outlet, in the process, the heat generated by the transducer when working can be taken out, and the heat dissipation performance is better, heat accumulation in the transducer is avoided, the temperature in the transducer is prevented from rising, the working efficiency of the transducer is guaranteed, meanwhile, the structure in the transducer is prevented from being damaged by high temperature, and the service life of the transducer is effectively prolonged.

[0038] The above is only the preferred embodiment of the utility model, and does not limit the technical range of the utility model, so any slight modification, equivalent change and modification according to the technical essence of the utility model are still within the technical range of the utility model.

Claims

1. A transducer having heat dissipation function, characterized by: The utility model provides a piezoelectric ceramic loudspeaker, including casing, lower pressing piece, upper pressing piece, piezoelectric ceramic and heat dissipation fan, the casing has an installation cavity, the lower end of casing is penetrated and is connected with the air inlet of installation cavity, the lateral wall of upper end of casing is equipped with the air outlet of installation cavity, the lower pressing piece is arranged in installation cavity, the upper pressing piece is arranged in installation cavity and is located the upper of lower pressing piece, the piezoelectric ceramic is arranged in installation cavity and is clamped between lower pressing piece and upper pressing piece, and upper pressing piece and lower pressing piece are pressed tightly on the upper and lower surface of piezoelectric ceramic respectively, the heat dissipation fan is arranged in installation cavity and is located the below of lower pressing piece, and the heat dissipation fan corresponds with the position of air inlet.

2. The transducer with heat dissipation function according to claim 1, characterized in that: The installation cavity is provided with upper and lower openings, the casing includes a bottom cover, the bottom cover is arranged on the casing and covers the lower end opening of the installation cavity, the air inlet is arranged on the bottom cover, and the upper pressing piece covers the upper end opening of the installation cavity.

3. The transducer with heat dissipation function according to claim 2, characterized in that: The inner side wall of the installation cavity is inwardly recessed with a support portion, the upper pressing piece is integrally outwardly protruded with a positioning portion matched with the support portion, and the lower end surface of the positioning portion abuts on the upper end surface of the support portion.

4. The transducer with heat dissipation function according to claim 1, characterized in that: The lower pressing piece is internally provided with a first tightening hole, the upper pressing piece is internally provided with a second tightening hole matched with the first tightening hole, a tightening bolt passes through the first and second tightening holes in sequence to tighten the upper and lower pressing pieces together, and the piezoelectric ceramic is internally provided with a through hole for the tightening bolt to pass through.

5. The transducer with heat dissipation function according to claim 1, characterized in that: The side wall of the installation cavity is penetrated with a wire passing hole for the heat dissipation fan and the piezoelectric ceramic to connect with the outside, and the wire passing hole is located below and to the side of the heat dissipation fan.

6. The transducer with heat dissipation function according to claim 1, characterized in that: The heat dissipation fan is fixedly installed in the installation cavity through a mounting plate, the mounting plate is fixed on the inner side wall of the installation cavity, and a plurality of through grooves penetrating the upper and lower end surfaces of the mounting plate are arranged on the periphery of the mounting plate.

7. The transducer with heat dissipation function according to claim 1, characterized in that: The air inlet is a plurality of air inlets arranged along the annular interval, and correspondingly, the air outlet is a plurality of air outlets arranged along the periphery of the side wall of the installation cavity at intervals.

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