Welding head fixing device for ultrasonic welding

Abstract

The utility model relates to an ultrasonic welding machine, in particular to a welding head fixing device for ultrasonic welding. The fixing seats are arranged at the two ends of the connecting seat, and fixing grooves are formed in the fixing seats; the first positioning pin is arranged at the top of the fixing groove; a welding head; a positioning groove matched with the first positioning pin is formed in the first positioning pin; the fixing screw is arranged on the fixing seat and is opposite to the welding head; wherein the welding head is inserted in the fixing groove, the positioning groove is inserted in the first positioning pin, and the fixing screw is used for pressing the welding head on the fixing groove and the first positioning pin. According to the welding head fixing device for ultrasonic welding, the welding head is fixed through the first positioning pin and the fixing screw, the overall structure is simple, disassembly and assembly are convenient, the machining difficulty is lowered, and then the cost is lowered.

Description

Technical Field

[0001] The utility model relates to an ultrasonic welding machine, in particular to a welding head fixing device for ultrasonic welding. Background Art

[0002] The welding device of an ultrasonic welding machine includes a transducer, a horn, and a welding head. The function of the transducer is to convert an electrical signal into a mechanical vibration signal. The horn amplifies the particle displacement or velocity of the mechanical vibration and concentrates the ultrasonic energy on a smaller area, that is, energy focusing. The welding head is made for specific welding parts. The transducer, horn, and welding head are all designed to be half-wavelengths of the working ultrasonic frequency, so their sizes and shapes have to be specially designed; any modification may cause changes in frequency and processing effects. If an ultrasonic welding machine needs welding devices with different frequencies, it needs to be able to fix welding heads and horns with different sizes and shapes.

[0003] For example, a clamping mechanism of a welding device of an ultrasonic welding machine disclosed in CN211165374U includes a horn clamping block for fixing the horn and a pressing block for fixing the welding head; the moving device includes a first arc; the pressing block includes a second arc; the pressing block is fixed on the moving device, and the first arc and the second arc clamp the welding head; the horn clamping block includes a first clamping block and a second clamping block for clamping the horn; the first clamping block is fixed on the moving device through a connecting plate.

[0004] Although this clamping mechanism can be applicable to different types of welding heads, this clamping mechanism has a complex structure, many components, inconvenient installation, and a relatively high processing difficulty and cost for the arcs. Content of the Utility Model

[0005] To solve the above problems, the utility model provides a welding head fixing device for ultrasonic welding. The specific technical solution is as follows:

[0006] A welding head fixing device for ultrasonic welding includes: a connecting seat; fixing seats provided at both ends of the connecting seat, with fixing grooves provided on the fixing seats; a first positioning pin provided at the top of the fixing groove; a welding head; a positioning groove provided and matching with the first positioning pin; and fixing screws provided on the fixing seats and arranged opposite to the welding head; wherein, the welding head is inserted into the fixing groove, the positioning groove is inserted onto the first positioning pin, and the fixing screws are used to press the welding head against the fixing groove and the first positioning pin.

[0007] Preferably, the soldering head fixing device further includes: a second positioning pin, which is fixed on one side of the fixing groove and is disposed opposite to the fixing screw, so that the fixing screw presses the soldering head against the second positioning pin.

[0008] Further, a positioning plane is provided on the soldering head, and the positioning plane is used to abut against the second positioning pin.

[0009] Preferably, the soldering head fixing device further includes: a locking nut, which is installed on the fixing screw.

[0010] Preferably, the soldering head fixing device further includes: a positioning screw rod, which is installed on the fixing base and is connected to the first positioning pin.

[0011] Preferably, a kidney-shaped first connection hole is further provided at the top of the connection seat, and the first connection hole is connected to the fixing base by a screw.

[0012] Preferably, a positioning boss is provided at the top of the fixing base, and a positioning groove is provided on the connection seat, and the positioning boss is inserted into the positioning groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The soldering head fixing device for ultrasonic welding provided by the present invention realizes the fixation of the soldering head through the first positioning pin and the fixing screw, has a simple overall structure, is convenient for disassembly and assembly, and reduces the processing difficulty, thereby reducing the cost. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the present application;

[0016] Figure 2 is a side view of the present application;

[0017] Figure 3 is a cross-sectional view of the present application;

[0018] Figure 4 is a perspective view of the present application without the soldering head installed;

[0019] Figure 5 is a schematic structural diagram of the soldering head;

[0020] Figure 6 is a front view of the soldering head;

[0021] Figure 7 is a schematic structural diagram of the soldering head equipped with a transducer and a horn. Detailed Embodiments

[0022] The present utility model will be further described in conjunction with the accompanying drawings.

[0023] As Figures 1 to 7 shown, a tip fixing device for ultrasonic welding includes a tip 2, a connecting seat 3, a fixing seat 1, a first positioning pin 13, a fixing screw 15 and a positioning groove 21. The connecting seat 3 is used to be installed on an ultrasonic welding machine. The fixing seat 1 is symmetrically fixed at both ends of the connecting seat 3 by screws. The fixing seat 1 is provided with a U-shaped fixing groove 10 and a first pin hole communicating with the top of the fixing groove 10. The first positioning pin 13 is installed in the first pin hole, and the first positioning pin 13 is located at the top of the fixing groove 10. The fixing screw 15 is installed at the bottom of the fixing seat 1 by threading, and the end of the fixing screw 15 is arranged opposite to the tip 2. The tip 2 is provided with a positioning groove 21, and the positioning groove 21 matches the first positioning pin 13. The tip 2 is inserted into the fixing groove 10, the positioning groove 21 is inserted on the first positioning pin 13, and the fixing screw 15 is used to press the tip 2 against the fixing groove 10 and the first positioning pin 13.

[0024] The positioning groove 21 and the first positioning pin 13 can accurately control the position of the tip 2 and prevent the tip 2 from rotating. The tip 2 is pressed against the fixing groove 10 and the first positioning pin 13 by the obliquely arranged fixing screw 15. When disassembling and assembling the tip 2, only the fixing screw 15 needs to be loosened and tightened, which greatly improves the replacement efficiency of the tip 2, reduces the components, makes the overall structure simpler, and reduces the processing difficulty and cost.

[0025] In order to prevent the fixing screw 15 from loosening, a locking nut 16 is installed on the fixing screw 15. After the fixing screw 15 presses the tip 2, the locking nut 16 is rotated by a wrench to press the locking nut 16 against the fixing seat 1, thereby preventing the fixing screw 15 from freely rotating during the operation of the tip 2 and ensuring the reliable fixation of the tip 2.

[0026] In order to further improve the positioning accuracy of the welding head 2 and reduce the machining difficulty of the fixing groove 10, the welding head fixing device further includes a second positioning pin 14. The second positioning pin 14 is fixed on one side of the fixing groove 10. The surface of the second positioning pin 14 protrudes above the side surface of the fixing groove 10. The second positioning pin 14 directly abuts against the welding head 2, and the second positioning pin 14 is arranged opposite to the fixing screw 15. The fixing screw 15 presses the welding head 2 against the second positioning pin 14 and the first positioning pin 13. Therefore, the machining difficulty of the fixing groove 10 is reduced, and the matching requirement between the welding head 2 and the fixing groove 10 is reduced. The second positioning pin 14 is vertically arranged, and the second positioning pin 14 is perpendicular to the first positioning pin 13. The first positioning pin 13, the second positioning pin 14 and the fixing screw 15 achieve three-point positioning with the welding head 2. In order to improve the positioning accuracy and prevent the surface of the welding head 2 from being damaged by the second positioning pin 14, a positioning plane 22 is provided on the welding head 2. The positioning plane 22 is used to abut against the second positioning pin 14. The positioning plane 22 cooperates with the second positioning pin 14, which can not only achieve precise positioning, increase the contact area between the welding head 2 and the second positioning pin 14, reduce the deformation of the surface of the welding head 2, but also further prevent the welding head 2 from rotating.

[0027] In order to prevent the first positioning pin 13 from disengaging from the first pin hole and improve the reliability of the installation of the first positioning pin 13, the welding head fixing device further includes a positioning screw 17. The positioning screw 17 is installed on the first connection hole 11 of the fixing base 1 and is connected to the first positioning pin 13. A first positioning hole can be provided on the first positioning pin 13. The positioning screw 17 passes through the first positioning hole, and then the first positioning pin 13 is fixed on the first pin hole to prevent the first positioning pin 13 from disengaging from the first positioning hole.

[0028] In order to facilitate the adjustment of the position of the fixing base 1 and improve the adaptability to the welding head 2, a kidney-shaped first connection hole 11 is further provided at the top of the connection seat 3. The first connection hole 11 is connected to the fixing base 1 by screws. The distance between two symmetrically arranged fixing bases 1 can be adjusted through the first connection hole 11.

[0029] In order to improve the position accuracy of the installation of the welding head 2, a positioning boss 19 is provided at the top of the fixing base 1, and a positioning groove 32 is provided on the connection seat 3. The positioning boss 19 is inserted into the positioning groove 32. The positioning groove 32 matches the positioning boss 19, which can accurately control the position of the fixing base 1, thereby improving the positioning accuracy of the welding head 2, facilitating the installation and positioning of the fixing base 1, and also facilitating the adjustment of the fixing base 1 to avoid the rotation angle of the fixing base 1.

[0030] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the claims of the present invention.

Claims

1. A welding head fixing device for ultrasonic welding, characterized in that: include: Connecting seat (3); A fixing seat (1) is arranged at two ends of the connecting seat (3), and a fixing groove (10) is provided on the fixing seat (1); A first positioning pin (13) is arranged at the top of the fixing groove (10); A welding head (2); provided with a positioning groove (21) matching the first positioning pin (13); as well as A fixing screw (15) is arranged on the fixing seat (1) and is arranged opposite to the welding head (2); The welding head (2) is inserted into the fixing groove (10), the positioning groove (21) is inserted into the first positioning pin (13), and the fixing screw (15) is used to press the welding head (2) onto the fixing groove (10) and the first positioning pin (13).

2. A welding head fixing device for ultrasonic welding according to claim 1, characterized in that: The welding head fixing device further comprises: a second positioning pin (14), the second positioning pin (14) being fixed on one side of the fixing groove (10) and being arranged opposite to the fixing screw (15), so that the fixing screw (15) presses the welding head (2) onto the second positioning pin (14).

3. A welding head fixing device for ultrasonic welding according to claim 2, characterized in that: The welding head (2) is provided with a positioning plane (22), and the positioning plane (22) is used to abut against the second positioning pin (14).

4. A welding head fixing device for ultrasonic welding according to claim 1, characterized in that: The welding head fixing device further comprises: a locking nut (16), wherein the locking nut (16) is mounted on the fixing screw (15).

5. A welding head fixing device for ultrasonic welding according to claim 1, characterized in that: The welding head fixing device further comprises: a positioning screw (17), wherein the positioning screw (17) is mounted on the fixing seat (1) and connected to the first positioning pin (13).

6. A welding head fixing device for ultrasonic welding according to claim 1, characterized in that: A waist-shaped first connection hole (11) is also provided on the top of the connection seat (3), and the first connection hole (11) is connected to the fixing seat (1) via screws.

7. A welding head fixing device for ultrasonic welding according to claim 1 or 6, characterized in that: The top of the fixing seat (1) is provided with a positioning boss (19), the connecting seat (3) is provided with a positioning groove (32), and the positioning boss (19) is inserted into the positioning groove (32).

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