Ultrasonic wire harness welding clamp

Abstract

The utility model relates to an ultrasonic wire harness welding clamp which comprises a base, a wire harness clamping mechanism, two terminal clamping mechanisms, a first air cylinder, a wire harness positioning mechanism, a lower welding table and a terminal placing table. The wire harness clamping mechanism comprises a second air cylinder, a wire harness clamping rod and a wire harness placing table; the terminal clamping mechanism comprises a connecting frame and a terminal clamping rod; the wire harness positioning mechanism comprises a wire harness positioning rod, a third air cylinder, a third connecting plate and a fourth air cylinder. The wire harness welding device has the advantages that the welding position of a wire harness is rapidly positioned through the wire harness positioning mechanism, and compared with visual inspection, positioning of the wire harness positioning rod is more accurate and rapid; the wire harness is clamped by the wire harness clamping mechanism, so that hand operation of an operator can be reduced, the operator does not need to hold the wire harness continuously in the whole welding process, and the working efficiency is improved; and the terminal clamping mechanism is matched with the terminal placing table to automatically clamp the terminal, so that manual handheld positioning is omitted, the terminal welding precision is higher, and the production line operation safety is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic welding equipment, in particular to an ultrasonic wire harness welding fixture. Background Art

[0002] Ultrasonic welding is a method of welding that uses the mechanical vibration energy of ultrasonic frequencies to produce plastic deformation on the surface of the workpiece and destroy the surface layer under pressure. Ultrasonic welding can be used for welding thin parts such as wire, foil, sheet, strip, and belt, and is suitable for lap joints. Metal ultrasonic welding can be divided into spot welding, ring welding, and seam welding, and its welding position is small. The connection between the wire harness and the terminal can be achieved by ultrasonic welding.

[0003] When performing batch ultrasonic welding on the production line, the operator needs to hold the wire harness while placing the terminal at the welding position, and then operate the ultrasonic equipment to weld the wire harness and the terminal. During the entire welding process, the operator always holds the wire harness, which makes it inconvenient to load the wire harness and the terminal, and the operation efficiency is low. In addition, since the terminals welded by the general wire harness are small in size, the accuracy of manual positioning of the wire harness and the terminal is poor, which affects the accuracy of the welding position, thereby affecting the quality of the wire harness welding. Utility Model Content

[0004] The utility model aims to provide an ultrasonic wire harness welding fixture, which can respectively clamp the wire harness and the terminal, and position them, thereby improving the accuracy of the welding position.

[0005] In order to achieve the above-mentioned utility model object, the utility model provides an ultrasonic wire harness welding fixture, comprising a base, a wire harness clamping mechanism, two terminal clamping mechanisms, a first cylinder, a wire harness positioning mechanism, a lower welding platform, and a terminal placement platform; the wire harness clamping mechanism, the lower welding platform, and the terminal placement platform are sequentially located between the two terminal clamping mechanisms through the base;

[0006] The harness clamping mechanism comprises a second cylinder, a harness clamping rod, and a harness placement platform; the second cylinder is connected to a driven plate, the top of the driven plate is connected to the harness clamping rod, and the head of the harness clamping rod is provided with a clamping groove; the harness placement platform is provided with a harness positioning groove, the harness clamping rods are provided on both sides of the harness placement platform, and the clamping grooves on both sides of the harness placement platform are arranged oppositely;

[0007] The terminal clamping mechanism comprises a connecting frame and a terminal clamping rod, the cylinder body of the first cylinder is fixed on the connecting frame, and the piston rod of the first cylinder is connected to the terminal clamping rod;

[0008] The lower soldering station is located below the terminal clamping rod, and the terminal placement station is provided with a terminal placement groove;

[0009] The wire harness positioning mechanism is located on one side of the terminal placement platform; the wire harness positioning mechanism includes a wire harness positioning rod, a third cylinder, a third connecting plate, and a fourth cylinder; the tail of the wire harness positioning rod is connected to the fourth cylinder, and a positioning block is vertically extended from the head of the wire harness positioning rod, and the positioning block faces the wire harness clamping mechanism; the fourth cylinder is connected to the third cylinder through the third connecting plate, and the third cylinder is connected to the base.

[0010] As a further improvement of the utility model, a first connecting piece is provided at the tail of the wiring harness clamping rod, the first connecting piece is provided with a first connecting hole, and a first fastener passes through the first connecting hole to detachably fix the first connecting piece to the driven plate.

[0011] As a further improvement of the utility model, two guide blocks are provided on the top of the connecting frame, and the terminal clamping rod is located between the two guide blocks.

[0012] Furthermore, the terminal clamping mechanism also includes a transmission plate, the transmission plate is provided with a guide groove, a guide shaft is provided in the guide groove, the piston rod of the first cylinder is connected to the transmission plate, the terminal clamping rod is connected to the guide shaft, and the piston rod of the first cylinder and the terminal clamping rod are perpendicular to each other.

[0013] As a further improvement of the utility model, a second connecting piece is provided between the piston rod of the first cylinder and the terminal clamping rod, the second connecting piece is provided with a plurality of second connecting holes, the terminal clamping rod is provided with a connecting groove, and a second fastener passes through the connecting groove and the second connecting hole to removably fix the terminal clamping rod to the second connecting piece.

[0014] As a further improvement of the utility model, a fifth cylinder is connected to the bottom of the connecting frame, the base is provided with a movable groove, and the connecting frame is located in the movable groove.

[0015] As a further improvement of the utility model, the terminal placement platform is provided with a third connection hole, and a third fastener detachably fixes the terminal placement platform to the base through the third connection hole.

[0016] The utility model discloses an ultrasonic wire harness welding fixture, which places the wire harness flat on a wire harness placement table, passes the wire harness positioning groove, and the end of the wire harness abuts against the positioning block of the wire harness positioning rod, so as to locate the welding position of the wire harness on the lower welding table; then, the second cylinder drives the wire harness clamping rods on both sides of the wire harness to close together at the same time to clamp the wire harness; the terminal is placed on the terminal placement table, and the welding part of the terminal is placed on the lower welding table, and at the same time, the terminal clamping mechanisms on both sides of the terminal clamp the terminal at the same time to position the terminal, and after the wire harness and the terminal are both positioned, ultrasonic welding is performed to weld the terminal to the end of the wire harness; after welding is completed, the wire harness clamping mechanism and the terminal clamping mechanism respectively release the wire harness and the terminal to facilitate material removal.

[0017] Compared with the prior art, the ultrasonic wire harness welding fixture of the utility model has the following advantages:

[0018] (1) The wire harness can be quickly positioned at the welding position through the wire harness positioning mechanism. Compared with naked eye observation, the positioning of the wire harness positioning rod is more accurate and faster;

[0019] (2) The wire harness is clamped by the wire harness clamping mechanism, which can reduce the operator's hand operation. During the entire welding process, the operator does not need to hold the wire harness continuously, thereby improving work efficiency;

[0020] (3) The terminal clamping mechanism cooperates with the terminal placement table to automatically clamp the terminal, eliminating the need for manual hand-held positioning, resulting in higher terminal welding accuracy and improved production line operation safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of an ultrasonic wire harness welding fixture of the utility model;

[0022] Figure 2 It is a schematic diagram of the wiring harness and terminal welding position structure;

[0023] Figure 3 It is a schematic diagram of the structure of the wire harness clamping mechanism;

[0024] Figure 4 It is a schematic diagram of the structure of the wire harness clamping rod;

[0025] Figure 5 It is a schematic diagram of the terminal clamping mechanism structure;

[0026] Figure 6 It is a schematic diagram of the transmission plate structure;

[0027] Figure 7 It is a schematic diagram of the structure of the wiring harness positioning mechanism;

[0028] Figure 8 This is a schematic diagram of the position relationship between the terminal placement platform and the terminal clamping rod. DETAILED DESCRIPTION

[0029] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 As shown, an ultrasonic wire harness welding fixture of the utility model comprises a base 1, a wire harness clamping mechanism 2, two terminal clamping mechanisms 3, a first cylinder 4, a wire harness positioning mechanism 5, a lower welding platform 6, and a terminal placement platform 7; the wire harness clamping mechanism 2, the lower welding platform 6, and the terminal placement platform 7 are sequentially located between the two terminal clamping mechanisms 3 through the base 1;

[0031] like Figure 3 As shown, the harness clamping mechanism 2 includes a second cylinder 21, a harness clamping rod 23, and a harness placement platform 24; the second cylinder 21 is a double-rod double-axis cylinder, and the telescopic rods at both ends of the second cylinder 21 are connected to the driven plate 22, and the tops of the two driven plates 22 are connected to the harness clamping rod 23, as shown in FIG. Figure 4 As shown, the head of the harness clamping rod 23 is provided with a clamping groove 231, the harness placement platform 24 is provided with a harness positioning groove 241, and both sides of the harness placement platform 24 are provided with harness clamping rods 23, and the clamping grooves 231 on both sides of the harness placement platform 24 are arranged oppositely;

[0032] A harness placement platform 24 is provided on both sides of the harness clamping rod 23. The harness 8 is placed on the harness placement platforms 24 on both sides of the harness clamping rod 23 and clamped in the harness positioning groove 241 to prevent the harness 8 from sliding on the harness placement platform 24, thereby facilitating the clamping of the harness clamping rod 23.

[0033] Since the initial distance between the harness clamping rods 23 on both sides is relatively close and the reciprocating stroke is relatively small, the advantage of the double-rod double-axis cylinder compared to the single-rod cylinder is that the harness clamping rods 23 connected to the telescopic rods on both sides can be controlled to move in parallel in both directions at the same time, and the accuracy is higher in the short stroke, ensuring that the harness clamping rods 23 on both sides of the harness 8 always maintain parallel movement, avoiding clamping misalignment, causing the clamped harness 8 to deflect and affecting the welding position. Before the harness is welded, the harness clamping rods 23 on both sides are simultaneously brought together to clamp the harness 8 on the table 24, and after the harness is welded, the harness clamping rods 23 on both sides are simultaneously moved away to release the harness 8.

[0034] The tail of the harness clamping rod 23 is provided with a first connecting member 25, and the first connecting member 25 is provided with a first connecting hole 251. The first fastener 26 passes through the first connecting hole 251 to detachably fix the first connecting member 25 to the driven plate 22. In order to adapt to different shapes of harnesses 8, the harness clamping rod 23 can be quickly disassembled and assembled through the first fastener 26, and the harness clamping rod 23 with a clamping groove 231 of a different shape can be replaced to improve the adaptability of harness clamping.

[0035] like Figure 5As shown, the terminal clamping mechanism 3 includes a connecting frame 31 and a terminal clamping rod 32 , the cylinder body of the first cylinder 4 is fixed on the connecting frame 31 , and the piston rod of the first cylinder 4 is connected to the terminal clamping rod 32 .

[0036] The terminal clamping rods 32 of the two terminal clamping mechanisms 3 are arranged relatively parallel to each other. As the piston rod of the first cylinder 4 is extended and retracted, the two terminal clamping rods 32 clamp or release the terminal 9 .

[0037] Two guide blocks 36 are provided on the top of the connecting frame 31, and the terminal clamping rod 32 is located between the two guide blocks 36. The terminal clamping rod 32 moves between the two guide blocks 36 to prevent the relative terminal clamping rods 32 from being misaligned after repeated movement, thereby affecting the clamping effect of the terminal 9.

[0038] like Figure 6 As shown, the terminal clamping mechanism 3 also includes a transmission plate 34, the transmission plate 34 is provided with a guide groove 341, a guide shaft 35 is arranged in the guide groove 341, the piston rod of the first cylinder 4 is connected to the transmission plate 34, the terminal clamping rod 32 is connected to the guide shaft 35, and the piston rod of the first cylinder 4 and the terminal clamping rod 32 are perpendicular to each other.

[0039] The piston rod of the first cylinder 4 is extended and retracted, and the transmission plate 34 drives the guide shaft 35 in the guide groove 341 to move accordingly. Under the guiding action of the two guide blocks 36, the terminal clamping rod 32 is always kept moving back and forth between the guide blocks 36. The operation mode in which the strokes of the terminal clamping rod 32 and the first cylinder 4 are perpendicular to each other is adopted. Its function is that the guide shaft 35 always keeps moving in a small stroke in the guide groove 341. The movement of the terminal clamping rod 32 not only plays a guiding role, but also meets the demand for repeated movement of the terminal clamping rod 32 in a small stroke, reduces the collision degree between the terminal clamping rods 32 on both sides and the surface of the terminal 9, improves the stability of the terminal clamping operation, and avoids affecting the welding quality due to the unevenness of the clamped terminal 9 when the wiring harness 8 and the terminal 9 are welded.

[0040] A second connector 33 is provided between the piston rod of the first cylinder 4 and the terminal clamping rod 32, the second connector 33 is provided with a plurality of second connection holes 331, the terminal clamping rod 32 is provided with a connection slot 321, and the second fastener 37 passes through the connection slot 321 and the second connection hole 331 to detachably fix the terminal clamping rod 32 on the second connector 33. Since the reciprocating stroke range of the terminal clamping rod 32 is small, the terminals welded by the wiring harness 8 have different shapes and sizes. If the clamping position of the two terminal clamping rods 32 is adjusted only by adjusting the stroke of the piston rod of the first cylinder 4, the accuracy is poor, which is easy to affect the clamping effect of the terminal, causing the clamped terminal to shake. In order to ensure the accuracy of the terminal clamping position, the fixed position of the terminal clamping rod 32 can be selected in advance through the second connection holes 331 at different positions according to the terminals of different shapes or sizes, and the initial spacing of the two terminal clamping rods 32 can be adjusted in advance, so as to adapt to terminals of different sizes or shapes.

[0041] like Figure 7 As shown, the bottom of the connecting frame 31 is connected to the fifth cylinder 38, the base 1 is provided with a moving groove 11, and the connecting frame 31 is located in the moving groove 11. The fifth cylinder 38 controls the connection frame 31 to rise and fall along the moving groove 11, and adjusts the clamping height of the terminal clamping rod 32 on the connecting frame 31 according to the requirements of the terminal clamping height position, so as to adapt to the clamping operation of terminals with large size differences on the production line, ensure that the terminal clamping rod 32 is always clamped in the middle of the target terminal, and avoid terminals with large size or shape differences from being unable to be clamped firmly.

[0042] like Figure 8 As shown, the lower soldering platform 6 is located below the terminal clamping rod 32, and the terminal placement platform 7 has a terminal placement groove 71; the head of the terminal 9 is placed on the terminal placement platform 7, and the welding area of ​​the terminal 9 is prevented from being on the lower soldering platform 6. The terminal placement groove 71 performs preliminary positioning of the terminal 9 to facilitate the clamping of the terminal clamping mechanism 3.

[0043] The terminal placement platform 7 is provided with a third connection hole 73, and the third fastener 72 detachably fixes the terminal placement platform 7 to the base 1 through the third connection hole 73. The terminal placement platform 7 with a matching terminal placement groove 71 can be replaced by the third fastener 72 according to terminals of different sizes or shapes, thereby improving the adaptability of terminal placement.

[0044] The harness positioning mechanism 5 is located on one side of the terminal placement platform 7. Figure 7 As shown, the harness positioning mechanism 5 includes a harness positioning rod 51, a third cylinder 52, a third connecting plate 53, and a fourth cylinder 54; the tail of the harness positioning rod 51 is connected to the fourth cylinder 54, as shown in FIG. Figure 1As shown, a positioning block 511 extends vertically from the head of the harness positioning rod 51 , and the positioning block 511 faces the harness clamping mechanism 2 ; the fourth cylinder 54 is connected to the third cylinder 52 through the third connecting plate 53 , and the third cylinder 52 is connected to the base 1 .

[0045] Before feeding the wire harness 8, the third cylinder 52 and the fourth cylinder 54 are used to adjust the horizontal and vertical positions of the wire harness positioning rod 51, and the positioning block 511 is moved above the lower welding table 6, so as to preset the welding area of ​​the wire harness 8. When the wire harness 8 is fed, the end of the wire harness 8 abuts against the positioning block 511 to complete the positioning of the wire harness 8. During ultrasonic welding, the wire harness positioning rod 51 can be reset by the third cylinder 52 and the fourth cylinder 54 to avoid affecting the ultrasonic welding operation.

[0046] The utility model discloses an ultrasonic wire harness welding fixture, which places a wire harness 8 flat on a wire harness placement table, passes the wire harness 8 through a wire harness positioning groove 241, and the end of the wire harness 8 abuts against a positioning block 511 of a wire harness positioning rod 51, thereby positioning the welding position of the wire harness 8 on a lower welding table 6; then, the second cylinder 21 drives the wire harness clamping rods 23 on both sides of the wire harness 8 to close together at the same time to clamp the wire harness 8; places a terminal 9 on a terminal placement table 7, and the welding part of the terminal 9 is placed on the lower welding table 6, and at the same time, the terminal clamping mechanisms 3 on both sides of the terminal 9 clamp the terminal 9 at the same time to position the terminal 9, and after the wire harness 8 and the terminal 9 are both positioned, ultrasonic welding is performed, such as Figure 2 As shown, the terminal 9 is welded to the end of the wire harness 8; after welding, the wire harness clamping mechanism 2 and the terminal clamping mechanism 3 respectively release the wire harness 8 and the terminal 9 to facilitate material removal.

[0047] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope defined by the claims of this application.

Claims

1. An ultrasonic wire harness welding fixture, characterized in that: It includes a base, a wire harness clamping mechanism, two terminal clamping mechanisms, a first cylinder, a wire harness positioning mechanism, a lower soldering platform, and a terminal placement platform; the wire harness clamping mechanism, the lower soldering platform, and the terminal placement platform are sequentially located between the two terminal clamping mechanisms through the base; The harness clamping mechanism comprises a second cylinder, a harness clamping rod, and a harness placement platform; the second cylinder is connected to a driven plate, the top of the driven plate is connected to the harness clamping rod, and the head of the harness clamping rod is provided with a clamping groove; the harness placement platform is provided with a harness positioning groove, the harness clamping rods are provided on both sides of the harness placement platform, and the clamping grooves on both sides of the harness placement platform are arranged oppositely; The terminal clamping mechanism comprises a connecting frame and a terminal clamping rod, the cylinder body of the first cylinder is fixed on the connecting frame, and the piston rod of the first cylinder is connected to the terminal clamping rod; The lower soldering station is located below the terminal clamping rod, and the terminal placement station is provided with a terminal placement groove; The wire harness positioning mechanism is located on one side of the terminal placement platform; the wire harness positioning mechanism includes a wire harness positioning rod, a third cylinder, a third connecting plate, and a fourth cylinder; the tail of the wire harness positioning rod is connected to the fourth cylinder, and a positioning block is vertically extended from the head of the wire harness positioning rod, and the positioning block faces the wire harness clamping mechanism; the fourth cylinder is connected to the third cylinder through the third connecting plate, and the third cylinder is connected to the base.

2. The ultrasonic wire harness welding fixture according to claim 1, characterized in that: A first connecting piece is provided at the tail of the harness clamping rod, and the first connecting piece is provided with a first connecting hole. A first fastener passes through the first connecting hole to detachably fix the first connecting piece to the driven plate.

3. The ultrasonic wire harness welding fixture according to claim 1, characterized in that: Two guide blocks are arranged on the top of the connecting frame, and the terminal clamping rod is located between the two guide blocks.

4. The ultrasonic wire harness welding fixture according to claim 3, characterized in that: The terminal clamping mechanism also includes a transmission plate, the transmission plate is provided with a guide groove, a guide shaft is arranged in the guide groove, the piston rod of the first cylinder is connected to the transmission plate, the terminal clamping rod is connected to the guide shaft, and the piston rod of the first cylinder and the terminal clamping rod are perpendicular to each other.

5. The ultrasonic wire harness welding fixture according to claim 1, characterized in that: A second connecting piece is provided between the piston rod of the first cylinder and the terminal clamping rod, the second connecting piece is provided with a plurality of second connecting holes, the terminal clamping rod is provided with a connecting groove, and a second fastener passes through the connecting groove and the second connecting hole to detachably fix the terminal clamping rod on the second connecting piece.

6. The ultrasonic wire harness welding fixture according to claim 1, characterized in that: The bottom of the connecting frame is connected with a fifth cylinder, the base is provided with a moving groove, and the connecting frame is located in the moving groove.

7. The ultrasonic wire harness welding fixture according to claim 1, characterized in that: The terminal placement platform is provided with a third connection hole, and a third fastener is used to detachably fix the terminal placement platform on the base through the third connection hole.

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