Welding equipment for planar silicon controlled rectifier chip

Abstract

The utility model belongs to the technical field of chip welding, and particularly relates to a welding device for a planar silicon controlled rectifier chip, which comprises a top plate, a welding gun mounted on the top plate, a hydraulic cylinder fixed at the bottom of the top plate, a fixed plate vertically and downwards fixed on a stroke rod of the hydraulic cylinder, and a sliding rod slidably connected in the fixed plate. A downward pressing frame is fixed to the bottom of the sliding rod, a buffering structure is installed on the outer side of the sliding rod and used for buffering downward pressing force of the downward pressing frame, the buffering structure comprises a movable plate connected to the outer side of the sliding rod in a sliding mode, a spring is installed between the movable plate and the downward pressing frame, and an adjusting mechanism is installed on the fixed plate. The adjusting mechanism is used for adjusting the position of the movable plate and comprises a motor fixed to the top of the fixed plate. According to the utility model, adjustable pressure can be applied to the chip in the welding process, and accurate alignment and good contact between the chip pin and the circuit board pin are ensured, so that the welding quality and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to chip welding technical field, concretely relates to a kind of welding equipment of plane thyristor chip. BACKGROUND

[0002] In the field of electronic manufacturing, the welding of plane thyristor chip is one of the key steps to realize circuit board assembly. As a kind of semiconductor device, plane thyristor chip is widely used in power electronic equipment for controlling and regulating current. In order to ensure the performance and reliability of the chip, the welding process must be accurate and stable.

[0003] Traditional welding equipment usually adopts manual welding or automatic welding machine, but these methods have some limitations. Manual welding depends on the skill of the operator, and it is difficult to ensure the consistency of welding quality, and the efficiency is low. Although automatic welding machine improves production efficiency, it often lacks the adjustment function of applying pressure to the chip, which may cause the chip pin and circuit board pin to be misaligned, thereby affecting the welding quality.

[0004] In existing automatic welding equipment, although some equipment can apply certain pressure to the chip, these equipment usually lack flexibility and cannot adjust the pressure according to different chip sizes or different welding environments. For example, for chips of different thickness or different pin spacing, the fixed pressure applying mechanism cannot be adapted, resulting in poor welding effect.

[0005] Therefore, the existing welding equipment cannot meet the high-precision and high-reliability welding requirements, especially for plane thyristor chip which requires very high welding quality. SUMMARY

[0006] The utility model aims at providing a kind of welding equipment of plane thyristor chip, can apply adjustable pressure to chip in welding process, ensure the accurate alignment and good contact of chip pin and circuit board pin, thereby improve welding quality and production efficiency.

[0007] The technical scheme adopted by the utility model is as follows:

[0008] A kind of welding equipment of plane thyristor chip, including top plate, the top plate is installed with welding gun, the bottom of the top plate is fixed with hydraulic cylinder, the stroke rod of the hydraulic cylinder is vertically fixed with fixed plate, the inside of the fixed plate is slidably connected with sliding rod, the bottom of the sliding rod is fixed with lower pressure frame.

[0009] The outer side of the sliding rod is installed with buffer structure, and the buffer structure is used to buffer the force of the lower pressure frame.

[0010] The buffer structure comprises a movable plate slidably connected to the outside of the sliding rod, and a spring is arranged between the movable plate and the pressing frame.

[0011] An adjusting mechanism is arranged on the fixed plate, and the adjusting mechanism is used for adjusting the position of the movable plate.

[0012] The adjusting mechanism comprises a motor fixed on the top of the fixed plate, a threaded rod is fixed on the output end of the motor vertically downward and penetrating through the fixed plate, the threaded rod is rotatably connected with the fixed plate, and the threaded rod is threadedly connected with the movable plate.

[0013] The pressing frame is rectangular and hollow, and the opening of the pressing frame is downward.

[0014] The top of the sliding rod is fixed with a blocking piece.

[0015] The bottom of the threaded rod is fixed with a fixed piece.

[0016] The technical effects achieved by the utility model are as follows:

[0017] The utility model discloses a pressing frame is arranged on the top of the fixed plate, and the sliding rod is rotatably connected with the pressing frame, and the movable plate is slidably connected to the outside of the sliding rod. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of the utility model;

[0019] Figure 2 It is the structural schematic diagram among spring, threaded rod and pressing frame in the utility model;

[0020] Figure 3 It is the structural schematic diagram among sliding rod, spring and movable plate in the utility model.

[0021] In the drawings, the components represented by each reference numeral are listed as follows:

[0022] 1, top plate;2, welding gun;3, hydraulic cylinder;4, fixed plate;5, sliding rod;6, pressing frame;7, spring;8, movable plate;9, motor;10, threaded rod;11, blocking piece;12, fixed piece. DETAILED DESCRIPTION

[0023] In order to make the purpose and advantages of the utility model more clearly, the utility model is specifically described below in combination with examples.

[0024] As shown in Figures 1-3 A kind of welding equipment of plane thyristor chip, including top plate 1, welding gun 2 is installed on top plate 1, and the welding gun 2 is detachably installed on top plate 1, and the lead of the welding gun 2 is wound or connected on top plate 1, the bottom of top plate 1 is fixed with hydraulic cylinder 3, the stroke rod of hydraulic cylinder 3 is vertically fixed with fixed plate 4, the inside of fixed plate 4 is slidably connected with sliding rod 5, the bottom of sliding rod 5 is fixed with lower press frame 6, lower press frame 6 is rectangular, and lower press frame 6 is hollow, and the opening of lower press frame 6 is downward, when lower press frame 6 moves down and is attached with chip, the multiple surfaces of lower press frame 6 can be contacted with chip respectively, so that lower press frame 6 is more uniform to chip, and the situation that pressing effect is not uniform does not appear;

[0025] Buffer structure is installed on the outside of sliding rod 5, and buffer structure is used to buffer the force of lower press frame 6.

[0026] Referring to the drawings Figure 2 Buffer structure includes movable plate 8 slidably connected to the outside of sliding rod 5, and spring 7 is installed between movable plate 8 and lower press frame 6.

[0027] Adjusting mechanism is installed on fixed plate 4, and adjusting mechanism is used to adjust the position of movable plate 8.

[0028] Movable plate 8 is fixed by adjusting mechanism, and the displacement range of movable plate 8 is limited, when chip needs to be welded, hydraulic cylinder 3 can be moved down, so that the stroke rod of hydraulic cylinder 3 drives fixed plate 4 to move down, so that lower press frame 6 moves down, so that lower press frame 6 first contacts with chip, fixed plate 4 continues to move down and drives lower press frame 6 to move down by a distance, so that sliding rod 5 moves up under the pressure of lower press frame 6, and drives spring 7 to compress, so that lower press frame 6 is pressed to chip.

[0029] Referring to the drawings Figure 2 Adjusting mechanism includes motor 9 fixed on the top of fixed plate 4, threaded rod 10 is vertically downward and fixed through fixed plate 4, threaded rod 10 is rotatably connected with fixed plate 4, and threaded rod 10 is threadedly connected with movable plate 8, further, the bottom of threaded rod 10 is fixed with fixed sheet 12, by the arrangement of fixed sheet 12, when threaded rod 10 rotates, movable plate 8 can be prevented from rotating out of threaded rod 10 by the block of fixed sheet 12.

[0030] When the spring 7 needs to be adjusted, the motor 9 is driven, and then the output end of the motor 9 drives the threaded rod 10 to rotate, and through the threaded connection between the threaded rod 10 and the movable plate 8, and through the sliding connection between the movable plate 8 and the sliding rod 5, the movable plate 8 is moved downward, and the blocking piece 11 is fixed on the top of the sliding rod 5, so that when the movable plate 8 moves downward, the sliding rod 5 moves downward, and the blocking piece 11 blocks the sliding rod 5 from continuing to move downward, so that when the movable plate 8 moves downward, only the spring 7 is compressed, at this time, the position of the lower pressing frame 6 is almost unchanged, and the spring 7 is in a certain degree of compression state, in this state, when the lower pressing frame 6 contacts and continues to press the chip, because the spring 7 has a certain degree of compression state, the spring 7 continues to compress, and the spring force caused by the lower pressing frame 6 is greater, therefore, the pressure caused by the lower pressing frame 6 to the chip is increased, so that the size of the pressure can be adjusted according to the welding of different chips.

[0031] The above is only the preferred embodiment of the present application, it should be pointed out that for those skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specifically described and limited, are implemented according to the conventional means in the art.

Claims

1. A welding apparatus for a planar thyristor chip, comprising a top plate (1), characterized in that: The welding gun (2) is installed on the top plate (1), the bottom of the top plate (1) is fixedly connected with a hydraulic cylinder (3), the stroke rod of the hydraulic cylinder (3) is vertically downwardly fixedly connected with a fixed plate (4), the inside of the fixed plate (4) is slidably connected with a sliding rod (5), and the bottom of the sliding rod (5) is fixedly connected with a pressing frame (6). A buffer structure is arranged on the outside of the sliding rod (5), and is used for buffering the force of the pressing frame (6).

2. The apparatus according to claim 1, wherein: The buffer structure comprises a movable plate (8) slidably connected to the outside of the sliding rod (5), and a spring (7) is arranged between the movable plate (8) and the pressing frame (6). An adjusting mechanism is arranged on the fixed plate (4) and is used for adjusting the position of the movable plate (8).

3. A device for soldering a planar thyristor chip according to claim 2, characterized in that: The adjusting mechanism comprises a motor (9) fixedly connected to the top of the fixed plate (4), a threaded rod (10) vertically downwardly and penetrating through the fixed plate (4) and fixedly connected to the output end of the motor (9), the threaded rod (10) is rotatably connected to the fixed plate (4), and the threaded rod (10) is threadedly connected to the movable plate (8).

4. The apparatus according to claim 1, wherein: The pressing frame (6) is rectangular, and the pressing frame (6) is hollow, and the opening of the pressing frame (6) is downwardly arranged.

5. The apparatus according to claim 3, wherein: The top of the sliding rod (5) is fixedly connected with a blocking piece (11).

6. The apparatus according to claim 3, wherein: The bottom of the threaded rod (10) is fixedly connected with a fixed piece (12).

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