Welding fixture

Abstract

The present invention discloses a welding jig, which includes a load-bearing clamping assembly and a pressing assembly; the load-bearing clamping assembly and the pressing assembly are arranged opposite to each other; wherein the load-bearing clamping assembly carries a first component and a second component of a product to be welded; and the pressing assembly presses down the load-bearing clamping assembly, so that the load-bearing clamping assembly presses the boss of the first component. The welding jig of the present invention carries the product to be welded by the load-bearing clamping assembly, and acts on the load-bearing clamping assembly by the pressing assembly, so that the load-bearing clamping assembly presses the boss of the first component to be welded, thereby ensuring the reliability of the pressing, achieving a good pressing effect, and effectively avoiding the misalignment of the first component and the second component, so that the laser enters the interior of the product during laser welding, causing damage to the internal circuit, or other welding defects.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and in particular to a welding jig. Background Art

[0002] Contactor refers to an electrical appliance in industrial power that uses current flowing through a coil to generate a magnetic field to close the contacts in order to control the load. Figure 1 As shown, the contactor includes an upper cover 01 and a lower magnetic shell 02, the upper cover 01 has a first upper boss 011 and a second upper boss 012, and the lower magnetic shell 02 has a first lower boss 021. When the contactor is assembled, the second upper boss 012 needs to be welded to the first lower boss 021. However, since the first upper boss 011 and the second upper boss 012 are similar in size, the first upper boss 011 will block the pressing assembly when the existing welding jig presses the upper cover, so that the pressing assembly cannot be pressed on the second upper boss 012, but can only be pressed on the first upper boss 011. However, this pressing and fixing method has a poor pressing effect. In the subsequent welding process, the upper cover 01 and the lower magnetic shell 02 are prone to misalignment, so that the laser generated by the welding machine enters the interior of the contactor and damages the internal circuit. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention discloses a welding jig, which includes: a load-bearing clamping assembly and a pressing assembly; the load-bearing clamping assembly and the pressing assembly are arranged relative to each other; wherein the load-bearing clamping assembly carries a first component and a second component of a product to be welded; the pressing assembly presses down the load-bearing clamping assembly, so that the load-bearing clamping assembly presses the boss of the first component.

[0004] According to one embodiment of the present invention, the load-bearing clamping assembly comprises a chuck, a fixture and a pressure block; the fixture is arranged on the chuck; the pressure block is arranged on the fixture, and one end of the pressure block close to the fixture has a convex portion protruding inward;

[0005] According to one embodiment of the present invention, the end of the clamp close to the pressing block has an arc-shaped positioning strip.

[0006] According to one embodiment of the present invention, the inner side wall of the clamp has a stepped portion.

[0007] According to an embodiment of the present invention, both the clamp and the pressing block have openings.

[0008] According to an embodiment of the present invention, the load-bearing clamping assembly further includes an elastic member; the elastic member abuts against the clamp and the pressing block respectively.

[0009] According to one embodiment of the present invention, the pressing assembly includes a pressing driving member and a pressing block; the pressing block is connected to the output end of the pressing driving member.

[0010] According to one embodiment of the present invention, the pressing assembly further comprises a rotating member; the rotating member is disposed on the pressing block and connected to the output end of the pressing driving member.

[0011] According to one embodiment of the present invention, the welding fixture further comprises a lifting assembly; before the carrying and clamping assembly carries the product to be welded, the lifting assembly lifts and positions the product to be welded.

[0012] According to one embodiment of the present invention, the welding fixture further includes a rotating assembly; the load-bearing clamping assembly is disposed on the rotating assembly.

[0013] According to one embodiment of the present invention, the welding jig further comprises a guide assembly; the load-bearing clamping assembly and the pressing assembly are arranged relative to the guide assembly.

[0014] The beneficial effects of the present invention are as follows: the welding jig of the present invention supports the product to be welded through the load-bearing clamping assembly, and acts on the load-bearing clamping assembly through the pressing assembly, so that the load-bearing clamping assembly presses the boss of the first component, ensures the reliability of the clamping, achieves a good clamping effect, and effectively avoids the misalignment of the first component and the second component, so that the laser enters the interior of the product during laser welding, causing damage to the internal circuit, or other poor welding situations occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 It is a schematic diagram of the structure of an unwelded product in an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of the structure of a welding jig in an embodiment of the present invention;

[0018] Figure 3 is a cross-sectional view of a welding jig according to an embodiment of the present invention;

[0019] Figure 4 It is a cross-sectional view of the cooperation of the lifting assembly, the load-bearing clamping assembly and the rotating assembly in the embodiment of the present invention;

[0020] Figure 5 for Figure 4 A partial enlarged view of .

[0021] Description of reference numerals:

[0022] 01, upper cover; 011, first upper boss; 012, first lower boss; 02, lower magnetic shell; 021, first lower boss; 1, welding fixture; 11, guide assembly; 111, mounting plate; 112, guide rod; 113, buffer; 12, lifting assembly; 121, lifting drive; 122, lifting rod; 13, load-bearing clamping assembly; 1300, opening; 131, chuck; 132, clamp Tools; 1321, step platform; 1322, arc-shaped positioning strip; 133, pressure block; 1331, convex portion; 134, guide column; 135, elastic member; 14, pressing assembly; 141, clamping drive member; 142, clamping block; 1421, air avoidance groove; 1422, clamping convex ring; 143, moving plate; 144, rotating member; 15, rotating assembly; 151, turntable; 152, rotating drive member. DETAILED DESCRIPTION

[0023] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0027] Please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of a welding jig 1 according to an embodiment of the present invention; Figure 3 1 is a cross-sectional view of a welding fixture 1 in an embodiment of the present invention. As shown in the figure, the welding fixture 1 of the present application includes a guide assembly 11, a lifting assembly 12, a load-bearing clamping assembly 13 and a pressing assembly 14. The lifting assembly 12 is arranged on the guide assembly 11. The pressing assembly 14 is arranged on the guide assembly 11, and the pressing assembly 14 is arranged opposite to the load-bearing clamping assembly 13. In specific application, first, the bearing clamping assembly 13 is opened, and the lifting assembly 12 is lifted into place, and the manipulator moves the product to be welded to the work station of the bearing clamping assembly 13, and the lifting assembly 12 supports the product to be welded, and the bearing clamping assembly 13 is closed to fix the product to be welded, the product to be welded includes a first component and a second component, and the first component and the second component are the upper cover 01 and the lower magnetic shell 02 respectively, and the lifting assembly 12 returns to its initial position; secondly, the pressing down assembly 14 presses down the bearing clamping assembly 13, and the pressing down assembly 14 cooperates with the bearing clamping assembly 13 to fix the unwelded product; finally, the welding machine welds the unwelded product, and after welding is completed, the pressing down assembly 14 returns to its initial position, the bearing clamping assembly 13 is opened again, and the lifting assembly 12 is lifted again, and the lifting assembly 12 supports the welded product, and the manipulator takes away the welded product.

[0028] Preferably, the welding fixture 1 further includes a rotating assembly 15, and the load-bearing clamping assembly 13 is disposed on the rotating assembly 15. After the pressing assembly 14 cooperates with the load-bearing clamping assembly 13 to fix the unwelded product, the rotating assembly 15 drives the load-bearing clamping assembly 13, the pressing assembly 14 and the unwelded product to rotate, and the welding machine welds the unwelded product.

[0029] Furthermore, the guide assembly 11 includes two mounting plates 111 and a plurality of guide rods 112. The two mounting plates 111 are arranged opposite to each other, and the two ends of the plurality of guide rods 112 are respectively arranged on the two mounting plates 111, and the plurality of guide rods 112 are located between the two mounting plates 111, and the plurality of guide rods 112 are parallel to each other. When the pressing assembly 14 is pressed down, it slides along the plurality of guide rods 112, and the plurality of guide rods 112 guide the pressing assembly 14, thereby ensuring the coaxiality between the pressing assembly 14 and the load-bearing clamping assembly 13. In this embodiment, the number of guide rods 112 is four. Of course, the number of guide rods 112 can be adaptively increased or decreased according to demand. The above is only one embodiment of the present invention and should not be limited thereto.

[0030] Refer to Figure 4 and Figure 5 , Figure 4 It is a cross-sectional view of the cooperation of the lifting assembly 12, the load-bearing clamping assembly 13 and the rotating assembly 15 in the embodiment of the present invention; Figure 5 for Figure 4A partial enlarged view. As shown in the figure, the load-bearing clamping assembly 13 includes a chuck 131, a clamp 132 and a pressure block 133. The chuck 131 is arranged on the mounting plate 111. The clamp 132 is arranged on the chuck 131. The pressure block 133 is connected to a guide column 134, and the guide column 134 is inserted into the clamp 132. The pressure block 133 has an inwardly protruding protrusion 1331 at one end close to the clamp 132. In this embodiment, the chuck 131 is a three-jaw chuck 131, and correspondingly, the number of the clamps 132 and the pressure blocks 133 is also three, the three clamps 132 are respectively arranged on the three claws of the chuck 131, and the three pressure blocks 133 are respectively arranged on the three clamps 132. In specific application, first, the chuck 131 drives the clamp 132 and the pressing block 133 to open, the lifting assembly 12 is lifted into place, and the manipulator moves the product to be welded to the accommodating cavity formed between the three clamps 132. The lifting assembly 12 supports the lower magnetic shell 02 of the unwelded product. Then, the chuck 131 drives the clamp 132 and the pressing block 133 to close, and the first lower boss 021 is clamped on the stepped platform 1321 of the inner side wall of the clamp 132. During the process of the chuck 131 driving the clamp 132 and the pressing block 133 to close, the clamp 132 is close to the pressing block 13 The arc-shaped positioning strip 1322 arranged on one end of 3 positions the second upper boss 012 of the upper cover 01 and the first lower boss 021 of the lower magnetic shell 02. The number of the arc-shaped positioning strips 1322 corresponds to the number of the clamps 132, which is also three. When the chuck 131 is closed, the three arc-shaped positioning strips 1322 are driven to enclose and form a circular ring. The inner wall of the circular ring abuts against the outer wall of the second upper boss 012 and the first lower boss 021. In this way, the upper cover 01 and the lower magnetic shell 02 are positioned to ensure the coaxiality of the upper cover 01 and the lower magnetic shell 02.

[0031] Preferably, the load-bearing clamping assembly 13 further includes an elastic member 135, which is a spring. The elastic member 135 is sleeved on the guide column 134, one end of the elastic member 135 abuts against the clamp 132, and the other end of the elastic member 135 abuts against the pressing block 133. When the pressing assembly 14 presses down the pressing block 133, the elastic member 135 plays a buffering role to prevent the pressure of the pressing assembly 14 from being too large and damaging the second upper boss 012 of the upper cover 01.

[0032] Furthermore, the lifting assembly 12 includes a lifting drive 121 and a lifting rod 122. The lifting drive 121 is disposed on the mounting plate 111, and the lifting drive 121 is a motor. The lifting rod 122 sequentially penetrates the lifting drive 121, the rotating disk 151 and the chuck 131, and the lifting rod 122 is connected to the output end of the lifting drive 121. During specific application, the lifting drive component 121 generates a driving force to drive the lifting rod 122 to lift or lower. When the robot moves the unwelded product to the workstation of the load-bearing clamping assembly 13, the lifting drive component 121 drives the lifting rod 122 to lift into place, thereby supporting and positioning the unwelded product, so that the first lower boss 021 of the lower magnetic shell 02 corresponds to the step platform 1321 of the inner wall of the clamp 132, ensuring that after the load-bearing clamping assembly 13 is closed, the first lower boss 021 is clamped on the step platform 1321; after welding is completed, the lifting drive component 121 drives the lifting rod 122 to lift again, thereby lifting the welded product, so that the robot can unload the welded product.

[0033] Furthermore, the pressing assembly 14 includes a clamping drive 141 and a clamping block 142. The clamping drive 141 is arranged on the mounting plate 111, and the clamping drive 141 is a cylinder. The output end of the clamping drive 141 is connected to a movable plate 143, and the movable plate 143 is sleeved on the guide rod 112 through a shaft sleeve. The clamping block 142 is arranged on the movable plate 143. After the bearing clamping assembly 13 fixes the product to be welded, the clamping drive 141 generates a driving member to drive the clamping block 142 to press down, and the clamping block 142 presses the clamping block 133 downward, so that the convex part 1331 of the clamping block 133 presses the second upper boss 012 of the upper cover 01, ensuring the clamping reliability of the second upper boss 012 and the first lower boss 021. At the same time, compared with the existing clamping method, this clamping method does not damage the ceramic surface of the first upper boss 011, thereby ensuring product quality.

[0034] Preferably, the pressing block 142 has an air avoidance groove 1421. When the pressing block 142 presses down the pressing block 133, the parts of the protruding part of the upper cover 01 are located in the air avoidance groove 1421, thereby avoiding damage to the parts of the protruding part of the upper cover 01 when the pressing block 142 is pressed down.

[0035] Preferably, the end of the clamping block 142 away from the movable plate 143 has a clamping convex ring 1422, and correspondingly, the clamping block 133 has a groove, the shape of the groove is adapted to the shape of the clamping convex ring 1422, and when the clamping block 142 presses the clamping block 133, the clamping convex ring 1422 is inserted into the groove to ensure that the clamping block 142 is coaxial with the clamping block 133 to avoid displacement.

[0036] Preferably, the pressing assembly 14 further includes a rotating member 144. The rotating member 144 is disposed in the clamping block 142, and the rotating member 144 is connected to the output end of the clamping driving member 141. In this embodiment, the rotating member 144 is a roller bearing, which has the advantages of small starting torque, high rotation accuracy, and convenient selection, so that when the rotating assembly 15 drives the bearing clamping assembly 13 to rotate, the clamping block 142 and the bearing clamping assembly 13 are ensured to rotate synchronously, ensuring that the force of the clamping block 142 pressing down the clamping block 133 remains unchanged.

[0037] Preferably, the guide assembly 11 also includes a buffer 113, which is a buffer. The buffer 113 is arranged on the guide rod 112 and the mounting plate 111. When the clamping drive 141 drives the clamping block 142 to approach or move away from the supporting clamping assembly 13, the buffer 113 has a buffering effect on the movable plate 143 to prevent the clamping drive 141 from having excessive driving force, causing the clamping block 142 to collide with the clamping block 133 and be damaged, or causing the movable plate 143 to collide with the mounting plate 11 and be damaged.

[0038] Specifically, the rotating assembly 15 includes a turntable 151 and a rotating driving member 152. The turntable 151 is rotatably arranged on the mounting plate 111. The rotating driving member 152 is arranged on the mounting plate 111, and the output end of the rotating driving member 152 is connected to the turntable 151, and the rotating driving member 152 is a motor. In specific applications, the rotating driving member 152 generates a driving force to drive the turntable 151 to rotate, thereby driving the load-bearing clamping assembly 13 arranged on the turntable 151 to rotate, and then driving the unwelded product fixed by the load-bearing clamping assembly 13 and the lower pressing assembly 14 to rotate. During the rotation process, the welding head of the welding machine extends from the opening 1300 opposite to the clamp 132 and the pressing block 133 to pre-weld the pre-welding points of the product. In this embodiment, the number of pre-welding points is 9, and correspondingly, the openings 1300 of the clamp 132 and the pressing block 133 also have 9; of course, the number of pre-welding points can be adaptively increased or decreased according to actual needs. The above is only one embodiment of the present invention and should not be limited thereto.

[0039] In specific applications, the guide assembly 11, the lifting assembly 12, the load-bearing clamping assembly 13, the pressing assembly 14 and the rotating assembly 15 are all electrically connected to the control system of the welding fixture 1, and the control system of the welding fixture 1 controls the guide assembly 11, the lifting assembly 12, the load-bearing clamping assembly 13, the pressing assembly 14 and the rotating assembly 15 to achieve the effect of automatic control of the welding fixture 1. Of course, the control system of the welding fixture 1 can be any one of an industrial computer, a PLC or a single-chip microcomputer, which will not be repeated here.

[0040] To sum up, in one or more embodiments of the present invention, the welding jig 1 of the present invention drives the clamp 132 and the pressure block 133 to close to fix the upper cover 01 and the lower magnetic shell 02 through the chuck 131, and acts on the pressure block 133 through the lower pressing component 14 to press the second upper boss 012 of the upper cover 01, thereby ensuring the reliability of the pressing and achieving a good pressing effect, effectively avoiding the misalignment of the upper cover 01 and the lower magnetic shell 02, causing the laser to enter the interior of the contactor and damage the internal circuit, or other poor welding situations.

[0041] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A welding jig, characterized in that: include: A load-bearing clamping assembly (13) and a pressing assembly (14); the load-bearing clamping assembly (13) and the pressing assembly (14) are arranged relative to each other; The load-bearing clamping assembly (13) carries a first component and a second component of a product to be welded; the pressing assembly (14) presses down the load-bearing clamping assembly (13), so that the load-bearing clamping assembly (13) presses the boss of the first component; The load-bearing clamping assembly (13) comprises a chuck (131), a clamp (132) and a pressing block (133); the clamp (132) is arranged on the chuck (131); the pressing block (133) is arranged on the clamp (132), and one end of the pressing block (133) close to the clamp (132) has a convex portion (1331) protruding inwardly; The pressing assembly (14) comprises a pressing drive member (141) and a pressing block (142); the pressing block (142) is connected to the output end of the pressing drive member (141); The welding fixture further comprises a lifting component (12); before the load-bearing clamping component (13) carries the product to be welded, the lifting component (12) lifts and positions the product to be welded; The welding fixture further comprises a rotating assembly (15); the load-bearing clamping assembly (13) is arranged on the rotating assembly (15); The welding fixture further comprises a guide assembly (11); the load-bearing clamping assembly (13) and the pressing assembly (14) are arranged relative to the guide assembly (11).

2. The welding jig according to claim 1, characterized in that: One end of the clamp (132) close to the pressing block (133) is provided with an arc-shaped positioning strip (1322).

3. The welding jig according to claim 1, characterized in that: The inner side wall of the clamp (132) has a stepped platform (1321).

4. The welding jig according to claim 3, characterized in that: The clamp (132) and the pressing block (133) both have an opening (1300).

5. The welding jig according to claim 1, characterized in that: The load-bearing clamping assembly (13) further comprises an elastic member (135); the elastic member (135) abuts against the clamp (132) and the pressing block (133) respectively.

6. The welding jig according to claim 1, characterized in that: The pressing assembly (14) further comprises a rotating member (144); the rotating member (144) is arranged on the pressing block (142) and is connected to the output end of the pressing driving member (141).

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