Welding method of oblique insertion type ultrasonic welding machine

Abstract

The invention belongs to the technical field of ultrasonic welding, and particularly relates to a welding method of an oblique insertion type ultrasonic welding machine, the ultrasonic welding machine comprises a rack, an ultrasonic welding system, a bottom die and two sets of movement mechanisms, the two sets of movement mechanisms are arranged on the two sides of the rack respectively, and a certain included angle is formed between the two sets of movement mechanisms and the rack; each movement mechanism comprises a driving part and a positioning assembly, the driving part is in transmission connection with the positioning assembly, and the positioning assembly comprises a left check block and a right check block; the welding method comprises the following steps that S10, a first workpiece is placed on a bottom die; s20, the corresponding positioning assemblies are driven by two driving parts to synchronously and obliquely move, so that a left check block and a right check block are in linkage to abut against the two sides of the first workpiece correspondingly, and a limiting space is formed among the left check block, the right check block and the first workpiece; s30, the second workpiece is placed in the limiting space; and S40, the ultrasonic welding system is started, so that the second workpiece and the first workpiece are welded into a formed product.

Description

Technical Field

[0001] The invention belongs to the technical field of ultrasonic welding, and in particular relates to a welding method of an oblique insertion type ultrasonic welding machine. Background Art

[0002] In ultrasonic welding equipment, crimping auxiliary equipment is used to provide support, clamping and positioning for the workpiece to be welded to ensure the accuracy and efficiency of the welded product. Ultrasonic welding tooling plays an important role in the ultrasonic welding process, especially the design of ultrasonic welding tooling is a crucial link in the entire welding process. Not only the shape, size, material and other factors of the welded parts need to be considered to ensure the stability and accuracy of the welded parts during the welding process, but also the working principle and characteristics of the ultrasonic welding machine must be fully considered when designing the tooling, and the support points and positioning points must be reasonably arranged to ensure that the welded parts will not have abnormal conditions such as dimensional deviation, product deformation, cold welding, over-welding, etc. during the welding process.

[0003] When welding the wiring harness terminal or busbar by an ultrasonic welder, the inventors found that there are at least the following technical problems in the prior art:

[0004] On the one hand, the traditional ultrasonic welding machine is only suitable for welding of wiring harness terminals or busbars, and is not compatible with various types of welding workpieces. It also limits the swinging mode and position of the welding workpiece. On the other hand, the deformation of the workpiece in the width direction after welding causes a strong squeezing force between the left and right stops. When the traditional clamp is extended and lifted, it will be offset or attenuated due to the size of the workpiece, tension, etc. After long-term use, the clamp will have clearance, resulting in a decrease in clamping force, and it will be unable to tighten the welding workpiece, affecting the welding quality and welding effect.

[0005] In view of this, it is necessary to improve the defects of the prior art to overcome the deficiencies in practical applications. Summary of the invention

[0006] Based on the above-mentioned shortcomings and deficiencies in the prior art, one of the objects of the present invention is to at least solve one or more of the above-mentioned problems in the prior art. In other words, one of the objects of the present invention is to provide a welding method of an oblique ultrasonic welder that meets one or more of the above-mentioned needs.

[0007] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0008] The present invention provides a welding method of an oblique insertion ultrasonic welder, wherein the ultrasonic welder comprises a frame, an ultrasonic welding system, a bottom mold and two sets of motion mechanisms, wherein the two sets of motion mechanisms are respectively arranged on both sides of the frame and arranged at a certain angle with the frame; each of the motion mechanisms respectively comprises a driving part and a positioning assembly, wherein the driving part is transmission-connected with the positioning assembly, and the positioning assembly comprises a left stopper and a right stopper; and the welding method comprises the following steps:

[0009] S10, placing the first workpiece on the bottom mold;

[0010] S20, driving the corresponding positioning components to move synchronously and obliquely through the two driving parts, so as to link the left stopper and the right stopper to press against two sides of the first workpiece, so as to form a limiting space between the left stopper, the right stopper and the first workpiece;

[0011] S30, placing the second workpiece in the limited space;

[0012] S40, starting the ultrasonic welding system to weld the second workpiece and the first workpiece into a formed product.

[0013] As a preferred solution, the welding method further comprises:

[0014] S50, after welding is completed, the two driving parts respectively drive the corresponding positioning components to return to the initial position along the oblique direction, so that the left stopper and the right stopper are separated from the molded product respectively.

[0015] As a preferred solution, there is a certain angle between the two motion mechanisms and the vertical direction of the frame, and the angle is set to 14-16°.

[0016] As a preferred solution, the rack includes a first mounting frame and a second mounting frame, the first mounting frame and the second mounting frame are respectively installed with slide rails, and the two positioning assemblies are respectively slidably matched with the corresponding slide rails.

[0017] As a preferred embodiment, the positioning assembly also includes an oblique slider, an adjustment seat and a wedge-shaped adjustment assembly, the oblique slider is connected to the slide rail, one end of the oblique slider is connected to the adjustment seat, the adjustment seat is connected to the left stop block or the right stop block, and the wedge-shaped adjustment assembly is installed on the adjustment seat and connected to the left stop block or the right stop block for adjusting the position of the left stop block or the right stop block.

[0018] As a preferred solution, the driving part is connected to a floating joint, and the floating joint is connected to the oblique sliding block.

[0019] As a preferred embodiment, the wedge adjustment assembly includes an adjustment shaft, a locker, a fixed seat and a wedge block, the adjustment shaft passes through the locker and the fixed seat and is connected to the wedge block, and the wedge block is connected to the left stopper or the right stopper.

[0020] As a preferred solution, the locker is in locking cooperation with the adjusting shaft.

[0021] As a preferred solution, a position indicator is further included, and the adjustment shaft is arranged through the position indicator.

[0022] As a preferred solution, the first workpiece and the second workpiece are arranged at 90° or 180°.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention provides a welding method of an oblique insertion ultrasonic welding machine, which can be adapted to the welding of wiring harness terminals and busbar pieces, can be compatible with various types of welding workpieces, and broadens the swinging mode and position of the welding workpieces; by clamping and positioning the welding workpieces, the motion mechanism adopts an oblique insertion reciprocating motion, which can solve the phenomena of tension attenuation and dimensional deviation caused by sticking or extrusion of the product after welding, thereby improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 2 is a schematic diagram of the overall structure of an oblique insertion type ultrasonic welding machine according to an embodiment of the present invention;

[0027] Figure 2 is a front view of an oblique insertion type ultrasonic welding machine according to an embodiment of the present invention;

[0028] Figure 3 is a schematic structural diagram of a wedge-shaped adjustment assembly according to an embodiment of the present invention;

[0029] Figure 4 is a cross-sectional view of a wedge adjustment assembly according to an embodiment of the present invention;

[0030] Figure 5 is a schematic diagram of the connection between the terminal and the wiring harness according to an embodiment of the present invention;

[0031] Figure 6 It is a schematic diagram of another connection method between the terminal and the wiring harness according to an embodiment of the present invention;

[0032] Figure 7 is a schematic diagram of the connection between a bar and a busbar according to an embodiment of the present invention;

[0033] Figure 8 It is a schematic flow chart of a welding method of an oblique insertion type ultrasonic welding machine according to an embodiment of the present invention;

[0034] In the figure: 1 frame, 11 first mounting frame, 12 second mounting frame, 13 slide rail, 2 driving unit, 21 floating joint, 3 positioning assembly, 31 left stopper, 32 right stopper, 33 oblique slide block, 34 adjustment seat, 35 wedge adjustment assembly, 351 adjustment shaft, 352 locker, 353 fixing seat, 354 wedge block, 355 position display, 4 ultrasonic welding system, 5 bottom mold. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the embodiments of the present application, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0036] In the description of the embodiments of the present application, the terms "upper", "lower", "front", "rear", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second", etc. are only used to distinguish in the description and have no special meaning.

[0037] According to some embodiments of the present application, please refer to Figures 1 to 4 As shown, an oblique insertion ultrasonic welder is provided, which includes a frame 1, an ultrasonic welding system 4, a bottom mold 5 and two sets of motion mechanisms, which are respectively arranged on both sides of the frame 1 and arranged at a certain angle with the frame 1; each motion mechanism includes a driving part 2 and a positioning assembly 3, the driving part 2 is transmission-connected to the positioning assembly 3, the positioning assembly 3 includes a left stopper 31 and a right stopper 32, the left stopper 31 and the right stopper 32 are respectively used to press against the left and right sides of the first workpiece A, and a limiting space is formed between the left stopper 31, the right stopper 32 and the upper surface of the first workpiece A, and the second workpiece B is placed in the limiting space.

[0038] In the embodiment of the present application, there is a certain angle between the two motion mechanisms and the vertical direction of the frame 1, and the angle is set to 14-16°, preferably 15°. Since the first workpiece and the second workpiece can be placed in the left-right direction or in the front-back direction, by setting a certain angle, the left stopper 31 and the right stopper 32 can be prevented from interfering with the first workpiece or the second workpiece during the pressing process.

[0039] Further, the rack 1 includes a first mounting frame 11 and a second mounting frame 12, the first mounting frame 11 and the second mounting frame 12 are respectively mounted with slide rails 13, and the two positioning assemblies 3 are respectively slidably matched with the corresponding slide rails 13. Accordingly, the angle between the two slide rails 13 and the vertical direction of the rack is set to 14-16°, preferably 15°.

[0040] Furthermore, the positioning assembly 3 also includes an inclined slider 33, an adjustment seat 34 and a wedge-shaped adjustment assembly 35. The inclined slider 33 is connected to the slide rail 13, one end of the inclined slider 33 is connected to the adjustment seat 34, the adjustment seat 34 is connected to the left stop block 31 or the right stop block 32, and the wedge-shaped adjustment assembly 35 is installed on the adjustment seat 34 and connected to the left stop block 31 or the right stop block 32, and is used to adjust the position of the left stop block 31 or the right stop block 32.

[0041] Furthermore, the driving part 2 is connected to the floating joint 21, and the floating joint 21 is connected to the oblique slider 33, which can ensure that the oblique slider 21 reciprocates along a fixed direction. The floating joint 21 can avoid position deviation during the movement of the oblique slider 33, and play a certain correction role.

[0042] In an embodiment of the present application, the wedge adjustment assembly 35 includes an adjustment shaft 351, a locker 352, a fixed seat 353 and a wedge block 354. The adjustment shaft 351 passes through the locker 352 and the fixed seat 353, and is connected to the wedge block 354. The wedge block 354 is connected to the left stopper 31 or the right stopper 32.

[0043] Furthermore, the wedge block 354 and the left stop block 31 or the right stop block 32 are wedge-fitted, and the position of the left stop block 31 or the right stop block 32 can be fine-tuned by adjusting the wedge adjustment component 35, thereby accurately controlling the left stop block 31 or the right stop block 32 to be pressed on the pressing position of the first workpiece A.

[0044] Furthermore, the locker 352 is locked with the adjustment shaft 351 to lock and fix the adjustment shaft 351. When the left stopper 31 or the right stopper 32 moves to the pressing position of the first workpiece, the position of the left stopper or the right stopper can be fixed by the locker.

[0045] Furthermore, the wedge-shaped adjustment component 35 also includes a position display 355 , and the adjustment shaft 351 is arranged through the position display 355 for displaying the position information of the left stopper 31 or the right stopper 32 .

[0046] Since the first workpiece A and the second workpiece B need different installation positions when they are configured as different products, the installation positions of the first workpiece A and the second workpiece B can be arranged at 90° or 180°. The first workpiece A can be configured as a terminal or a busbar, and the corresponding second workpiece B can be configured as a wiring harness or a bar.

[0047] like Figure 5 As shown, the terminal A1 is connected to the wiring harness B1 at 180 degrees, the left stopper 31 is pressed at the pressing position A11, and the right stopper 32 is pressed at the pressing position A12, and the wiring harness B1 and the terminal A1 are welded into shape by an ultrasonic welding system.

[0048] like Figure 6 As shown, the terminal A2 is connected to the wiring harness B2 at 90 degrees, the left stopper 31 is pressed at the pressing position A21, and the right stopper 32 is pressed at the pressing position A22, and the wiring harness B2 and the terminal A2 are welded into shape by an ultrasonic welding system.

[0049] like Figure 7 As shown, the connection method between the busbar A3 and the bar piece B3 is that the left stopper 31 or the right stopper 32 is pressed at the pressing position A31, and the bar piece A3 and the busbar B3 are welded into shape by an ultrasonic welding system.

[0050] The ultrasonic welding machine of the embodiment of the present application can place the workpiece in the best welding position, has good welding formability, significantly reduces process defects, increases the welding speed, and can effectively prevent and reduce deformation of the product after welding.

[0051] According to some embodiments of the present application, please refer to Figure 8 As shown, a welding method of an oblique ultrasonic welding machine is also provided, comprising the following steps:

[0052] S10, placing the first workpiece on the bottom mold, and supporting the lower surface of the first workpiece by the bottom mold;

[0053] S20, driving the corresponding positioning components to move synchronously and obliquely through the two driving parts, so as to link the left stopper and the right stopper to press against two sides of the first workpiece, so as to form a limiting space between the left stopper, the right stopper and the first workpiece;

[0054] S30, placing the second workpiece in the limited space for welding by the ultrasonic welding system;

[0055] S40, starting the ultrasonic welding system to weld the second workpiece and the first workpiece into a formed product.

[0056] Furthermore, the welding method further comprises:

[0057] S50, after welding is completed, the two driving parts respectively drive the corresponding positioning components to return to the initial position along the oblique direction, so that the left stopper and the right stopper are separated from the molded product respectively.

[0058] The welding method of the embodiment of the present application can be adapted to the welding of wiring harness terminals and busbar tabs, can be compatible with various types of welding workpieces, and is no longer limited by the swinging mode and position of the welding workpieces, thereby broadening the welding application scenarios.

[0059] By clamping and positioning the welding workpiece, the moving mechanism adopts oblique reciprocating motion, which can solve the problems of tension attenuation and dimensional deviation caused by sticking or extrusion of the product after welding, thereby improving the welding quality.

[0060] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0061] The above description is only a detailed description of the preferred embodiments and principles of the present application. For ordinary technicians in this field, there will be changes in the specific implementation methods based on the ideas provided by the present invention, and these changes should also be regarded as the scope of protection of the present application.

Claims

1. A welding method of an oblique ultrasonic welding machine, characterized in that: The ultrasonic welding machine comprises a frame, an ultrasonic welding system, a bottom mold and two sets of motion mechanisms, the two sets of motion mechanisms are respectively arranged on both sides of the frame and arranged at a certain angle with the frame; each of the motion mechanisms respectively comprises a driving part and a positioning assembly, the driving part is transmission-connected with the positioning assembly, and the positioning assembly comprises a left stopper and a right stopper; the welding method comprises the following steps: S10, placing the first workpiece on the bottom mold; S20, driving the corresponding positioning components to move synchronously and obliquely through the two driving parts, so as to link the left stopper and the right stopper to press against two sides of the first workpiece, so as to form a limiting space between the left stopper, the right stopper and the first workpiece; S30, placing the second workpiece in the limited space; S40, starting the ultrasonic welding system to weld the second workpiece and the first workpiece into a formed product.

2. The welding method of the oblique ultrasonic welding machine according to claim 1, characterized in that: The welding method further comprises: S50, after welding is completed, the two driving parts respectively drive the corresponding positioning components to return to the initial position along the oblique direction, so that the left stopper and the right stopper are separated from the molded product respectively.

3. The welding method of an oblique ultrasonic welder according to claim 1, characterized in that: There is a certain angle between the two motion mechanisms and the vertical direction of the frame, and the angle is set to 14-16 degrees.

4. The welding method of an oblique ultrasonic welder according to claim 1, characterized in that: The rack includes a first mounting frame and a second mounting frame, the first mounting frame and the second mounting frame are respectively mounted with slide rails, and the two positioning assemblies are respectively slidably matched with the corresponding slide rails.

5. The welding method of the oblique ultrasonic welding machine according to claim 4, characterized in that: The positioning assembly also includes an oblique slider, an adjustment seat and a wedge-shaped adjustment assembly, the oblique slider is connected to the slide rail, one end of the oblique slider is connected to the adjustment seat, the adjustment seat is connected to the left stop block or the right stop block, the wedge-shaped adjustment assembly is installed on the adjustment seat and connected to the left stop block or the right stop block for adjusting the position of the left stop block or the right stop block.

6. The welding method of the oblique ultrasonic welding machine according to claim 5, characterized in that: The driving part is connected to the floating joint, and the floating joint is connected to the oblique sliding block.

7. The welding method of the oblique ultrasonic welding machine according to claim 5, characterized in that: The wedge-shaped adjustment assembly includes an adjustment shaft, a locker, a fixing seat and a wedge-shaped block. The adjustment shaft passes through the locker and the fixing seat and is connected to the wedge-shaped block. The wedge-shaped block is connected to the left stopper or the right stopper.

8. The welding method of the oblique ultrasonic welding machine according to claim 7, characterized in that: The locker is in locking cooperation with the adjusting shaft.

9. The welding method of the oblique ultrasonic welding machine according to claim 7, characterized in that: A position indicator is also included, and the adjustment shaft is arranged through the position indicator.

10. The welding method of an oblique ultrasonic welder according to claim 1, characterized in that: The first workpiece and the second workpiece are arranged at 90° or 180°.

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