A 20khz ultrasonic horn

Abstract

The utility model provides a kind of 20KHz ultrasonic welding head, including coaxial installation section, connecting section and working section;The end face of the installation section away from the connecting section is equipped with mounting hole;The connecting section is connected with the installation section and the working section respectively;The end face of the working section away from the connecting section is equipped with welding surface, and the entire welding surface is treated with spark pattern.Processing with spark pattern on the entire welding surface of working section can better avoid black printing on product surface, improve product quality and increase the yield of products.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic welding technology, and in particular to a 20KHz ultrasonic welding head. Background Technology

[0002] Ultrasonic welding utilizes high-frequency vibration waves transmitted to the surfaces of two objects to be welded. Under pressure, the surfaces of the two objects rub against each other, forming a fusion between molecular layers.

[0003] When welding plastics (such as PP, PC, ABS, PA, etc.) with existing ultrasonic welding heads, the energy loss of ultrasonic waves is relatively large, resulting in a short lifespan of the ultrasonic welding head. It also causes defects such as false welding and over-welding to the product. Especially when welding products at high frequencies (such as 20KHz), a black stain will form on the product surface, resulting in lower product quality. Utility Model Content

[0004] In view of this, the present invention proposes a 20KHz ultrasonic welding head to solve the technical problem mentioned in the background art that when the ultrasonic welding head of the prior art welds plastics, a layer of black stain is formed on the product surface, resulting in low product quality.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides a 20kHz ultrasonic welding head, comprising a coaxial mounting section, a connecting section, and a working section, wherein:

[0007] The end face of the mounting section away from the connecting section is provided with a mounting hole;

[0008] The connecting segment is connected to both the mounting segment and the working segment;

[0009] The working section has a welding surface on its end face away from the connecting section, and the entire welding surface is treated with spark pattern.

[0010] Based on the above technical solutions, preferably, the size of the spark pattern is 0.06mm.

[0011] Based on the above technical solutions, preferably, the mounting section is cylindrical, and the circumferential surface of the mounting section is uniformly provided with multiple clamping holes.

[0012] Based on the above technical solutions, preferably, the connecting segment is cylindrical, and the connection between the connecting segment and the mounting segment is provided with a first transition fillet.

[0013] Based on the above technical solutions, preferably, the working section is cylindrical, and a second transition fillet is provided at the connection between the working section and the connecting section.

[0014] Based on the above technical solutions, preferably, the diameter of the connecting section is smaller than the diameter of the mounting section and smaller than the diameter of the working section.

[0015] Based on the above technical solutions, preferably, the working section is provided with a limiting hole, and the bottom surface of the limiting hole abuts against the surface of the workpiece to be welded.

[0016] Based on the above technical solutions, preferably, the working section is further provided with a clearance hole, which extends from the bottom of the limiting hole into the connecting section.

[0017] The 20kHz ultrasonic welding head of this invention has the following advantages over the prior art:

[0018] (1) By performing spark pattern treatment on the entire welding surface of the working section, black stains can be effectively avoided on the product surface, thus improving product quality and yield.

[0019] (2) By setting the spark mark specification to 0.06mm, the black stain suppression effect is the best, further improving the quality of the product;

[0020] (3) Since the mounting section is cylindrical and the circumferential surface of the mounting section is uniformly provided with multiple clamping holes, the mounting section can be clamped by inserting the clamping device into the clamping holes, which can make the mounting section more secure and stable and improve the reliability of the device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a perspective view of the 20kHz ultrasonic welding head in an embodiment of the present invention from one angle.

[0023] Figure 2 This is a perspective view of the 20kHz ultrasonic welding head in this embodiment of the present invention from another angle.

[0024] Explanation of reference numerals in the attached drawings: 1-Installation section, 2-Connection section, 3-Working section, 4-First transition fillet, 5-Second transition fillet;

[0025] 11-Mounting hole, 12-Clamping hole;

[0026] 31-Welding surface, 32-Limiting hole, 33-Avoidance hole. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0028] Reference Figure 1 and Figure 2 As shown in the embodiment of this utility model, a 20kHz ultrasonic welding head is proposed, comprising a coaxial mounting section 1, a connecting section 2, and a working section 3, wherein:

[0029] The end face of the mounting section 1 away from the connecting section 2 is provided with a mounting hole 11, which is used to connect an ultrasonic transducer.

[0030] The connecting section 2 is connected to the mounting section 1 and the working section 3 respectively;

[0031] The working section 3 has a welding surface 31 on its end face away from the connecting section 2, and the entire welding surface 31 is treated with an EDM (Electrical Discharge Machining) pattern. The welding surface 31 is used to transmit high-frequency vibration waves to the surfaces of the two objects to be welded. Under pressure, the surfaces of the two objects rub against each other to form a fusion between molecular layers. The EDM pattern is an ablation mark left on the mold surface during copper electrode discharge. The surface of the EDM pattern is pitted, and the coarseness of the pits can be adjusted by the current of the EDM machine.

[0032] The 20kHz ultrasonic welding head proposed in this embodiment can effectively prevent the formation of black stains on the product surface by performing spark pattern treatment on the entire welding surface 31 of the working section 3, thereby improving product quality and yield.

[0033] In some embodiments, the size of the spark pattern is 0.06 mm. By setting the size of the spark pattern (i.e., the pitting on the surface) to 0.06 mm, the suppression effect of black stains is best, further improving the quality of the product.

[0034] In some embodiments, the mounting section 1 is cylindrical, and a plurality of clamping holes 12 are uniformly provided on the circumferential surface of the mounting section 1. For example... Figure 1 As shown, there are 3 clamping holes 12, which are evenly distributed along the same circumference of the circumference. The clamping device extends into the clamping holes 12 to clamp the circumference of the mounting section 1, which can make the installation of the mounting section 1 more secure and stable and improve the reliability of the device.

[0035] In some embodiments, the connecting segment 2 is cylindrical, and a first transition fillet 4 is provided at the connection between the connecting segment 2 and the mounting segment 1. By providing the first transition fillet 4, stress concentration at the connection between the connecting segment 2 and the mounting segment 1 can be avoided, thereby improving the strength of the device and thus improving the reliability of the device.

[0036] In some embodiments, the working section 3 is cylindrical, and a second transition fillet 5 is provided at the connection between the working section 3 and the connecting section 2. By providing the second transition fillet 5, stress concentration at the connection between the working section 3 and the connecting section 2 can be avoided, thereby improving the strength of the device and thus improving the reliability of the device.

[0037] In some embodiments, the diameter of the connecting segment 2 is smaller than the diameter of the mounting segment 1 and smaller than the diameter of the working segment 3. With this configuration, while meeting connection strength requirements, the overall size of the device can be reduced, resulting in a more compact and efficient structure that facilitates flexible layout and welding operations.

[0038] In some embodiments, the working section 3 is provided with a limiting hole 32, the bottom surface of which abuts against the surface of the workpiece to be welded. By the bottom surface of the limiting block abutting against the surface of the workpiece to be welded, the welding head is limited, avoiding excessive contact force between the welding head and the surface 31 to be welded, thus preventing over-welding and improving welding quality.

[0039] In some embodiments, the working section 3 is further provided with a clearance hole 33, which extends from the bottom of the limiting hole 32 into the connecting section 2. The clearance hole 33 allows for clearance of columnar protrusions on the workpiece, thereby improving the reliability of the device.

[0040] The working principle of the 20KHz ultrasonic welding head in this embodiment of the utility model is as follows: the entire welding surface 31 is treated with spark pattern, and the welding surface 31 transmits high-frequency vibration waves to the surfaces of the two objects to be welded for welding. By comparison, the black stains on the surface of the product after the spark pattern treatment are effectively suppressed, the surface is more glossy and transparent, the product quality is improved, and the yield rate of the product is increased.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A 20 KHz ultrasonic horn characterized by, It includes a coaxial mounting section, a connecting section, and a working section, wherein: The end face of the mounting section away from the connecting section is provided with a mounting hole; The connecting segment is connected to both the mounting segment and the working segment; The working section has a welding surface on its end face away from the connecting section, and the entire welding surface is treated with spark pattern.

2. The 20 KHz ultrasonic horn of claim 1 wherein, The spark mark has a specification of 0.06 mm.

3. The 20kHz ultrasonic welding head as described in claim 1, characterized in that, The mounting section is cylindrical, and a plurality of clamping holes are evenly provided on the circumferential surface of the mounting section.

4. The 20kHz ultrasonic welding head as described in claim 3, characterized in that, The connecting section is cylindrical, and a first transition fillet is provided at the connection between the connecting section and the mounting section.

5. The 20kHz ultrasonic welding head as described in claim 4, characterized in that, The working section is cylindrical, and a second transition fillet is provided at the connection between the working section and the connecting section.

6. The 20kHz ultrasonic welding head as described in claim 5, characterized in that, The diameter of the connecting section is smaller than the diameter of the mounting section and smaller than the diameter of the working section.

7. The 20kHz ultrasonic welding head as described in claim 6, characterized in that, The working section is provided with a limiting hole, and the bottom surface of the limiting hole abuts against the surface of the workpiece to be welded.

8. The 20kHz ultrasonic welding head as described in claim 7, characterized in that, The working section is also provided with a clearance hole, which extends from the bottom of the limiting hole into the connecting section.

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