Limiting device for assisting in welding TVS (Transient Voltage Suppressor) diode

Abstract

The utility model discloses a limiting device for assisting in welding a TVS diode, which comprises a limiting table, a tube shell is placed in an arc-shaped groove of a placement seat at the top of the limiting table, a positioning frame is installed outside the placement seat through a butt joint assembly, a first limiting assembly for fixing the tube shell is arranged on the positioning frame, and a second limiting assembly for fixing the tube shell is arranged on the first limiting assembly. The two ends of the tube shell make contact with pins, the pins are fixed to a second limiting assembly installed in the limiting table, the second limiting assembly comprises two fixing clamping blocks fixed to the top end of the limiting table, and the fixing clamping blocks are attached to one sides of the pins. According to the utility model, through the design of the limiting assembly II and the limiting assembly I, the tightness of the pin and the tube shell is better, compared with the traditional mode that the pin is directly placed in a mold for processing, the overall tightness is better and firmer, the positions of the pin and the tube shell are very stable and are not easy to shake, so that the processing tightness is effectively improved, and the processing efficiency is improved. And moreover, the fixing operation is simple, and the welding fixture is very suitable for welding processing of the TVS diode.

Description

Technical Field

[0001] The utility model relates to the technical field of diode processing, in particular to a limiting device for assisting welding of a TVS diode. Background Art

[0002] TVS diode, or transient voltage suppression diode, is a protective electronic component designed to protect electrical equipment from voltage spikes introduced by wires. When the two poles of a TVS diode are subjected to a reverse transient high-energy impact, it can quickly change the high impedance between the two poles into a low impedance, absorbing up to several kilowatts of surge power, and clamping the voltage between the two poles to a predetermined value, thereby effectively protecting the precision components in the electronic circuit from damage by various surge pulses.

[0003] At present, most TVS diodes are composed of a cylindrical tube shell and pins at both ends, such as a TVS diode disclosed in patent number CN220441004U, and the tube shell and the pins are mostly fixed by welding. The existing welding method places the tube shell and the pins in a fixed limiting mold, such as a similar diode welding device disclosed in patent number CN216749808U. Although this has a certain limiting effect, the stability is general and there is no better limiting mechanism, which causes the pins and the tube shell to shake slightly or bounce due to the vibration force during welding, so that the contact between the pins and the tube shell is often not tight enough, thereby affecting the processing accuracy.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a limiting device for assisting the welding of TVS diodes is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a limiting device for assisting the welding of TVS diodes, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: it includes a limit platform, a tube shell is placed in the arc groove of the top placement seat of the limit platform, a positioning frame is installed on the outside of the placement seat through a docking component, a limit component 1 for fixing the tube shell is provided on the positioning frame, pins are contacted at both ends of the tube shell, and the pins are fixed on a limit component 2 installed inside the limit platform, the limit component 2 includes two fixed clamping blocks fixed at the top of the limit platform, the fixed clamping block is fitted with one side of the pin, and a movable clamping block is fitted on the other side of the pin, the movable clamping block is docked with a movable block in the inner cavity of the limit platform through a connecting plate, the movable block is threadedly connected to the outside of the screw rod, and the screw rod is rotatably connected to the inner cavity of the limit platform, an L-shaped plate is fixed to one side of the fixed clamping block, and a screw is threadedly inserted on the L-shaped plate.

[0007] Preferably, the screw rod is provided with two places in the inner cavity of the limit platform, and one of them is docked with the knob installed on the front side of the limit platform, the non-threaded section of the screw rod is fixed with two limit plates, and the two screw rods are commonly connected with a synchronous belt at the position between the limit plates.

[0008] Preferably, one end of the screw rod is fitted with the end surface of the pin, and a soft pad is connected between the fitting surface of the screw rod and the pin.

[0009] Preferably, the first limiting component comprises an arc plate attached to the top surface of the tube shell, the guide rod and the main slide rod fixed on the top of the arc plate both pass through the positioning frame, and the top end of the main slide rod is connected to the positioning frame with a spring.

[0010] Preferably, the docking assembly includes transverse plates fixed on both sides of the positioning frame, the transverse plates are embedded in a U-shaped block fixed on the top surface of the limiting platform, and a stopper is rotatably connected to the top surface of the U-shaped block.

[0011] Preferably, an opening is provided on the inner surface of the limiting platform, and a sealing plate is hinged at the opening, and a collection box is placed in the inner cavity of the limiting platform.

[0012] Preferably, two mounting blocks are symmetrically fixed to the bottom of the limiting platform, and two threaded grooves are formed on the mounting blocks.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model designs the second limiting component and the first limiting component, so that the pin and the tube shell have better tightness. Compared with the traditional direct placement in the mold for processing, the overall tightness is better and more firm. The positions of the pin and the tube shell are very stable and will not shake easily, thereby effectively improving the tightness of the processing and ensuring the production quality. The fixing operation is simple, and the utility model is very suitable for the welding processing of TVS diodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a limiting device for assisting in welding a TVS diode in the present invention;

[0016] Figure 2 This is a schematic diagram of the overall side view of the three-dimensional structure of a limiting device for assisting the welding of a TVS diode in the present invention;

[0017] Figure 3 This is a schematic diagram of the overall rear-view stereoscopic structure of a limiting device for assisting in welding a TVS diode in the present invention;

[0018] Figure 4 This is a three-dimensional structural schematic diagram of a limiting component of a limiting device for assisting welding of a TVS diode in the present invention;

[0019] Figure 5This is a schematic diagram of the three-dimensional structure of a tube shell of a limiting device for assisting welding of a TVS diode in the present invention;

[0020] Figure 6 A limit device for assisting welding of TVS diodes is provided in this paper Figure 1 A schematic diagram of the amplified structure of output;

[0021] Figure 7 This is a schematic diagram of the internal three-dimensional structure of a limiter platform of a limiter device for assisting in welding TVS diodes.

[0022] In the figure: 1. limit table; 2. placement seat; 3. tube shell; 4. docking assembly; 41. cross plate; 42. U-shaped block; 43. stopper; 5. positioning frame; 6. limit assembly one; 61. arc plate; 62. guide rod; 63. main slide rod; 64. spring; 7. pin; 8. limit assembly two; 81. fixed clamp block; 82. movable clamp block; 83. movable block; 84. lead screw; 85. L-shaped plate; 86. screw; 87. cushion; 88. limit plate; 89. synchronous belt; 9. mounting block; 10. sealing plate; 11. collection box; 12. knob. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0024] like Figure 1-Figure 7 As shown, it includes a limit platform 1, a tube shell 3 is placed in the arc groove of the placement seat 2 at the top of the limit platform 1, a positioning frame 5 is installed on the outside of the placement seat 2 through a docking component 4, a limit component 1 6 for fixing the tube shell 3 is provided on the positioning frame 5, and pins 7 are contacted at both ends of the tube shell 3. The pins 7 are fixed on a limit component 2 8 installed inside the limit platform 1, and the limit component 2 8 includes two fixed clamps 81 fixed on the top of the limit platform 1, the fixed clamps 81 are fitted with one side of the pin 7, and a movable clamp 82 is fitted with the other side of the pin 7, the movable clamp 82 is docked with a movable block 83 in the inner cavity of the limit platform 1 through a connecting plate, and a screw 84 is rotatably connected to the inner cavity of the limit platform 1, an L-shaped plate 85 is fixed on one side of the fixed clamp 81, a screw 86 is threadedly inserted on the L-shaped plate 85, one end of the screw 86 is fitted with the end face of the pin 7, and a soft pad 87 is connected to the fitting surface of the screw 86 and the pin 7.

[0025] The specific operation is as follows: by designing the limit assembly 2 8 and the limit assembly 1 6, when performing the welding operation, the tube shell 3 is placed in the arc groove of the placement seat 2, and the placement seat 2 is installed with the positioning frame 5 through the docking assembly 4. At this time, the upper limit assembly 1 6 on the positioning frame 5 automatically fixes the tube shell 3, and then a staff member places the two pins 7 in the arc groove of the fixed clamping block 81, and fits with the two ends of the tube shell 3, and another staff member rotates the two screw rods 84 to drive the movable block 83 to move, so that the movable clamping block 82 can clamp the other side of the pin 7 and then release it, and finally rotate the screw 86 on the L-shaped plate 85 so that the soft pad 87 at one end of the screw 86 is in contact with the end surface of the pin 7. The pin 7 and the tube shell 3 are fitted together so that the tightness between the pin 7 and the tube shell 3 is better. Compared with the traditional direct placement in the mold for processing, the overall tightness is better and more firm. The positions of the pin 7 and the tube shell 3 are very stable and will not shake easily, thereby effectively improving the tightness of the processing and ensuring the production quality. The fixation is simple and very suitable for the welding processing of the TVS diode. After that, the pin 7 and the contact end of the tube shell 3 are welded. After the welding is completed, the positioning frame 5 is removed, and then the movable clamp 82 is reset to take out the diode. It should be noted that the side docking plate of the movable clamp 82 slides in the opening of the limit table 1, so the movable block 83 will not rotate with the screw rod 84.

[0026] like Figure 1 , Figure 4 and Figure 7 As shown, the screw rod 84 is provided with two locations in the inner cavity of the limit platform 1 and one location is docked with the knob 12 installed on the front side of the limit platform 1, the non-threaded section of the screw rod 84 is fixed with two limit plates 88, and the two screw rods 84 are connected with a synchronous belt 89 between the limit plates 88.

[0027] The specific operation is as follows: when driving the two screw rods 84 to rotate together for clamping or releasing the clamping, rotating a knob 12 drives one screw rod 84 to rotate, and the two screw rods 84 can rotate together through the synchronous belt 89 between the limit plates 88, which is not only easy to operate, but also ensures the synchronization of the two sides, which is very convenient.

[0028] like Figure 1 , Figure 5 and Figure 6 As shown, the limit assembly 6 includes an arc plate 61 attached to the top surface of the tube shell 3, the guide rod 62 and the main slide rod 63 fixed on the top of the arc plate 61 both pass through the positioning frame 5, and the top of the main slide rod 63 is connected to the positioning frame 5 with a spring 64, and the docking assembly 4 includes a horizontal plate 41 fixed on both sides of the positioning frame 5, the horizontal plate 41 is embedded in the U-shaped block 42 fixed on the top surface of the limit platform 1, and the top surface of the U-shaped block 42 is rotatably connected with a stopper 43.

[0029] The specific operation is as follows. In this way, when fixing the tube shell 3, the positioning frame 5 is placed outside the placement seat 2, and the inner wall of the positioning frame 5 is fitted with the outer wall of the placement seat 2, and the cross plate 41 is embedded in the inner recess of the U-shaped block 42, and then the stopper 43 on the top surface of the U-shaped block 42 is rotated to contact the top surface of the cross plate 41, thereby limiting the positioning frame 5. When the positioning frame 5 is placed, the arc plate 61 will contact the outer wall of the tube shell 3, and make the main slide bar 63 slide on the positioning frame 5 to stretch the spring 64. Therefore, when the positioning frame 5 is fixed, the rebound force generated by the spring 64 makes the arc plate 61 automatically press the tube shell 3 tightly to keep the position of the tube shell 3 stable, thereby improving the stability of processing and welding, and solving the problem of poor limiting effect of the tube shell 3 placed in the mold. The guide rod 62 plays the role of limiting guide, and after fixing it, it is found that the positions of the two end surfaces of the tube shell 3 are asymmetrical, and the main slide bar 63 can be pulled up for fine adjustment, which is very convenient. It should be noted that the positioning frame 5 needs to be pressed when the stopper 43 is rotated, because the spring 64 is in a stretched state at this time.

[0030] like Figure 1-Figure 3 As shown, the inner surface of the limit platform 1 is provided with an opening, and a sealing plate 10 is hinged at the opening. A collection box 11 is placed in the inner cavity of the limit platform 1. Two mounting blocks 9 are symmetrically fixed to the bottom of the limit platform 1, and two threaded grooves are opened on the mounting blocks 9.

[0031] The specific operation is as follows. During installation, the limit platform 1 can be easily installed through two mounting blocks 9. Before welding, the sealing plate 10 is opened and the collection box 11 is placed. During welding, dust and debris fall into the cavity through the opening moved by the side docking plate of the movable clamp 82. At this time, the collection box 11 can be collected for later centralized processing. It should be noted that the bottom surface of the limit platform 1 is designed as an opening and the opening is nailed to the bottom plate, which is convenient for disassembly to clean and maintain the parts in the cavity.

[0032] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A limiting device for assisting in welding a TVS diode, comprising a limiting platform (1), characterized in that: A tube shell (3) is placed in the arc groove of the placement seat (2) at the top of the limiting platform (1); a positioning frame (5) is installed on the outside of the placement seat (2) through a docking component (4); a limiting component (6) for fixing the tube shell (3) is provided on the positioning frame (5); pins (7) are in contact at both ends of the tube shell (3); and the pins (7) are fixed on a limiting component (8) installed inside the limiting platform (1); The second limiting assembly (8) comprises two fixed clamping blocks (81) fixed on the top of the limiting platform (1), the fixed clamping blocks (81) being fitted with one side of the pin (7), and a movable clamping block (82) being fitted with the other side of the pin (7), the movable clamping block (82) being connected to a movable block (83) in the inner cavity of the limiting platform (1) via a connecting plate, the movable block (83) being threadedly connected to the outside of a screw rod (84), the screw rod (84) being rotatably connected to the inner cavity of the limiting platform (1), an L-shaped plate (85) being fixed to one side of the fixed clamping block (81), and a screw rod (86) being threadedly inserted into the L-shaped plate (85).

2. A limiting device for assisting welding of TVS diodes according to claim 1, characterized in that: The screw rod (84) is provided with two positions in the inner cavity of the limit platform (1), and one position is docked with a knob (12) installed on the front side of the limit platform (1); the non-threaded section of the screw rod (84) is fixed with two limit plates (88); and the two screw rods (84) are connected to a synchronous belt (89) at a position between the limit plates (88).

3. A limiting device for assisting welding of TVS diodes according to claim 2, characterized in that: One end of the screw rod (86) is fitted with the end surface of the pin (7), and a soft pad (87) is connected to the fitting surface between the screw rod (86) and the pin (7).

4. A limiting device for assisting welding of TVS diodes according to claim 1, characterized in that: The limiting component 1 (6) comprises an arc plate (61) attached to the top surface of the tube shell (3), a guide rod (62) and a main sliding rod (63) fixed on the top of the arc plate (61) both pass through the positioning frame (5), and a spring (64) is connected to the top of the main sliding rod (63) and the positioning frame (5).

5. A limiting device for assisting welding of TVS diodes according to claim 4, characterized in that: The docking assembly (4) comprises a transverse plate (41) fixed on both sides of the positioning frame (5); the transverse plate (41) is embedded in a U-shaped block (42) fixed on the top surface of the limiting platform (1); and a stopper (43) is rotatably connected to the top surface of the U-shaped block (42).

6. A limiting device for assisting in welding a TVS diode according to claim 1, characterized in that: The inner surface of the limiting platform (1) is provided with an opening, and a sealing plate (10) is hinged at the opening; a collecting box (11) is placed in the inner cavity of the limiting platform (1).

7. A limiting device for assisting welding of TVS diodes according to claim 6, characterized in that: Two mounting blocks (9) are symmetrically fixed to the bottom of the limiting platform (1), and two threaded grooves are formed on the mounting blocks (9).

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