Lead welding device for piezoresistor production

Abstract

The utility model discloses a lead welding device for piezoresistor production, which comprises a working table, a clamping mechanism for a pressure-sensitive chip is arranged in the middle of the working table, pay-off rollers are arranged on two sides of the working table, leads are arranged on the pay-off rollers, a welding mechanism is further arranged on the working table, and the clamping mechanism comprises a mounting seat. A first mounting plate is fixedly arranged on the mounting base downwards, a sliding groove is formed in the mounting base and is perpendicular to the first mounting plate, a lower opening is formed in the bottom of the sliding groove, a sliding block is slidably connected into the sliding groove, the sliding block extends out of the lower opening to be provided with a connecting plate, the connecting plate is fixedly connected with a second mounting plate, and a first clamping assembly is fixedly arranged on the first mounting plate downwards; each group of first clamping assembly comprises two L-shaped plates, a second clamping assembly is downwards arranged on the second mounting plate, the second clamping assembly comprises two vertical plates, and by adopting the clamping mechanism, after the pressure-sensitive chip is clamped, electrodes of the pressure-sensitive chip are located at the left end and the right end of the workbench and are exposed, so that welding is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of resistor production equipment, and in particular relates to a lead welding device for varistor production. Background Art

[0002] When welding the leads of current resistors such as varistors, workers usually hold the resistor with one hand and use the other hand to use a welding gun to weld the resistor. The existing lead welding devices used in resistor production have poor stability during welding, poor welding quality, and are not convenient to operate.

[0003] In view of the above problems, some improvements have been proposed in the prior art. For example, the patent with authorization announcement number CN 215999175U discloses a lead welding device for resistor production, comprising an operating table, a resistor clamping mechanism is arranged at one end of the upper side of the operating table, a lead storage box is installed at the other end of the upper side of the operating table, leads are arranged inside the lead storage box, a fixing frame is arranged at a position adjacent to the lead storage box on the upper side of the operating table, a welding gun is clamped inside the fixing frame, a welding machine and a drawer are arranged on the lower side of the operating table, a welding machine output line is arranged on the front side of the welding machine, the resistor clamping mechanism comprises a clamping table, a card support frame is arranged on the upper side of the clamping table, a clamping push rod is installed on the inner side of the card support frame, a card board is installed at the lower end of the clamping push rod, a resistor clamping slot is opened on the upper side of the clamping table, an upper clamping plate of a terminal is arranged on one side of the card board, and a lower clamping plate of a terminal is arranged on one side of the clamping table.

[0004] In the production process of varistor, the varistor chip needs to be electrode treated, that is, silver or other conductive materials are attached to both sides of the chip as electrodes, and then two leads are welded to the two electrodes respectively. When the above welding device is used to weld the varistor chip, it is not convenient to weld the electrode at the bottom of the clamped varistor chip. After the upper electrode is welded, the clamping mechanism can be opened, the varistor chip can be turned over and clamped again before welding, and the welding process is relatively complicated. Utility Model Content

[0005] Purpose of the utility model:

[0006] In order to overcome the problems existing in the prior art, the utility model provides a lead welding device for varistor production. By adopting the clamping mechanism, after the varistor chip is clamped, the electrodes of the varistor chip are located at the left and right ends of the workbench and are exposed to the outside, which is convenient for welding.

[0007] In order to solve the above problems, the utility model adopts the following technical solutions:

[0008] A lead welding device for varistor production comprises a workbench, a clamping mechanism for a varistor chip is arranged in the middle of the workbench, wire pay-off rollers are arranged on both sides of the workbench, leads are arranged on the wire pay-off rollers, a welding mechanism is also arranged on the workbench, the welding mechanism comprises a welding gun and a welding machine arranged inside the workbench cavity, the welding machine and the welding gun are electrically connected, the clamping mechanism comprises a mounting seat, a first mounting plate is fixedly arranged downward on the mounting seat, a slide groove is opened on the mounting seat perpendicular to the first mounting plate, a lower opening is arranged at the bottom of the slide groove, a slider is slidably connected in the slide groove, and the slider A connecting plate is extended outward from the downward opening, and the connecting plate is fixedly connected to a second mounting plate arranged opposite to the first mounting plate, and at least one group of first clamping components is arranged downwardly on the first mounting plate, and each group of first clamping components includes two L-shaped plates, and the second mounting plate is arranged downwardly on a number of second clamping components equal to that of the first clamping components, and the second clamping components include two vertical plates corresponding to the L-shaped plates, and the L-shaped plates and the corresponding vertical plates form a U-shaped clamping groove for clamping the side end of the pressure-sensitive chip, and a spring is fixedly arranged on one end of the sliding groove away from the first mounting plate, and the other end of the spring is fixedly connected to the slider.

[0009] Preferably, an upper opening is provided at the top of the slide groove, a limit block that can be removed from the upper opening is provided at one end of the slide groove close to the first mounting plate, a clamping shaft is extended upwardly from the slide block, and a rotating block for clamping the clamping shaft is provided at the upper end of the mounting seat.

[0010] Preferably, there are two slide grooves, and a slider and a spring are disposed inside each slide groove.

[0011] Preferably, a transverse limiting plate is provided at one end of the L-shaped plate away from another L-shaped plate in the same group.

[0012] Preferably, the number of the first clamping assemblies and the number of the second clamping assemblies are both five.

[0013] Preferably, rubber pads are provided on the inner sides of the L-shaped plate and the vertical plate.

[0014] Preferably, one pay-off roller is provided on each side of the workbench.

[0015] Beneficial effects: Compared with the prior art, the utility model has the following advantages: by adopting this clamping mechanism, after the pressure-sensitive chip is clamped, the electrodes of the pressure-sensitive chip are located at the left and right ends of the workbench and are exposed, which is convenient for welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is an enlarged stereoscopic diagram of the clamping mechanism of the utility model;

[0018] Figure 3 It is a three-dimensional diagram of the clamping mechanism of the utility model clamping a pressure-sensitive chip;

[0019] Figure 4 It is a cutaway stereogram of the clamping mechanism of the utility model;

[0020] Description of figure markings:

[0021] 1. Workbench; 2. Clamping mechanism; 201. Mounting seat; 202. First mounting plate; 203. Slide groove; 204. Slider; 205. Connecting plate; 206. Second mounting plate; 207. First clamping assembly; 2071. L-shaped plate; 2072. Horizontal limit plate; 208. Second clamping assembly; 2081. Vertical plate; 209. Spring; 210. Limit block; 3. Pay-off roller; 4. Welding mechanism; 5. Pressure-sensitive chip. DETAILED DESCRIPTION

[0022] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0023] Any feature disclosed in this specification (including any additional claims, abstracts and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-4As shown, a lead welding device for varistor production includes a workbench 1, a clamping mechanism 2 for a varistor chip 5 is arranged in the middle of the workbench 1, wire pay-off rollers 3 are arranged on both sides of the workbench 1, and leads are arranged on the wire pay-off rollers. A welding mechanism 4 is also arranged on the workbench 1, and the welding mechanism includes a welding gun and a welding machine arranged inside the workbench cavity, and the welding machine and the welding gun are electrically connected. The clamping mechanism 2 includes a mounting seat 201, and a first mounting plate 202 is fixedly arranged downward on the mounting seat 201, and a slide groove 203 is provided on the mounting seat perpendicular to the first mounting plate, and a lower opening is provided at the bottom of the slide groove, and a slider 204 is slidably connected in the slide groove 203, and the slider 204 opens downward. A connecting plate 205 is extended outside the mouth, and the connecting plate 205 is fixedly connected to a second mounting plate 206 arranged opposite to the first mounting plate. The first mounting plate 202 is provided with at least one group of first clamping components 207 downwardly, and each group of first clamping components includes two L-shaped plates 2071. The second mounting plate 206 is provided with a second clamping component 208 with the same number as the first clamping component downwardly, and the second clamping component includes two vertical plates 2081 corresponding to the L-shaped plates. The L-shaped plates 2071 and the vertical plates 2081 corresponding to them form a U-shaped clamping groove for clamping the side end of the pressure-sensitive chip. A spring 209 is fixedly provided at one end of the slide away from the first mounting plate, and the other end of the spring is fixedly connected to the slider. With this clamping mechanism, after the pressure-sensitive chip is clamped, the electrodes of the pressure-sensitive chip are located at the left and right ends of the workbench and are exposed to the outside, which is convenient for welding.

[0026] In this embodiment, an upper opening is provided on the top of the slide groove, and a limit block 210 that can be removed from the upper opening is provided at one end of the slide groove close to the first mounting plate. With this structure, the width of the U-shaped clamping groove after clamping can be controlled according to the thickness of the limit block, so as to be suitable for pressure-sensitive chips of different thicknesses. A clamping shaft (not shown in the figure) is extended upwardly from the slider, and a rotating block (not shown in the figure) for clamping the clamping shaft is provided at the upper end of the mounting seat. After the vertical plate is moved away from the L-shaped plate, the clamping shaft is fixed by the rotating block, and then the pressure-sensitive chip is placed, and then the fixing of the rotating block and the clamping shaft is cancelled. The vertical plate is moved toward the L-shaped plate under the action of the spring to fix the pressure-sensitive chip.

[0027] In this embodiment, two slide grooves are provided, and a slider and a spring are provided inside each slide groove, so that the setting of the two slide grooves is more stable.

[0028] In this embodiment, a transverse limiting plate 2072 is provided at one end of the L-shaped plate away from another L-shaped plate in the same group, which is used to limit the width direction of the pressure-sensitive chip to prevent displacement during installation.

[0029] In this embodiment, the number of the first clamping components and the number of the second clamping components are both five.

[0030] In this embodiment, rubber pads are provided on the inner sides of the L-shaped plate and the vertical plate.

[0031] In this embodiment, the pay-off roller 3 is provided at each side of the workbench, and is used to weld the electrodes at both sides of the pressure-sensitive chip.

[0032] The purpose of the above embodiments is to exemplarily reproduce and deduce the technical solution of the utility model, and to fully describe the technical solution, purpose and effect of the utility model. Its purpose is to make the public understand the disclosed content of the utility model more thoroughly and comprehensively, and it does not limit the protection scope of the utility model.

[0033] The above embodiments are not exhaustive enumerations based on the present invention, and there may be multiple other implementations not listed. Any replacement and improvement made without violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A lead welding device for varistor production, characterized in that: The invention comprises a workbench (1), wherein a clamping mechanism (2) for a pressure-sensitive chip (5) is arranged in the middle of the workbench (1), wire-releasing rollers (3) are arranged on both sides of the workbench (1), and leads are arranged on the wire-releasing rollers. A welding mechanism (4) is also arranged on the workbench (1), and the welding mechanism comprises a welding gun and a welding machine arranged inside a cavity of the workbench, and the welding machine and the welding gun are electrically connected. The clamping mechanism (2) comprises a mounting seat (201), and a first mounting plate (202) is fixedly arranged downward on the mounting seat (201), and a slide groove (203) is provided on the mounting seat perpendicular to the first mounting plate, and a lower opening is arranged at the bottom of the slide groove, and a slider (204) is slidably connected in the slide groove (203), and the slider (204) is extended outward from the lower opening. There is a connecting plate (205), the connecting plate (205) is fixedly connected to a second mounting plate (206) arranged opposite to the first mounting plate, the first mounting plate (202) is provided with at least one group of first clamping components (207) downwardly, each group of first clamping components includes two L-shaped plates (2071), the second mounting plate (206) is provided with second clamping components (208) equal in number to the first clamping components downwardly, the second clamping components include two vertical plates (2081) corresponding to the L-shaped plates, the L-shaped plates (2071) and the corresponding vertical plates (2081) form a U-shaped clamping groove for clamping the side end of the pressure-sensitive chip, the end of the sliding groove away from the first mounting plate is fixedly provided with a spring (209), and the other end of the spring is fixedly connected to the slider.

2. A lead welding device for varistor production according to claim 1, characterized in that: The top of the slide groove is provided with an upper opening, and one end of the slide groove close to the first mounting plate is provided with a limit block (210) that can be removed from the upper opening. The slide block is provided with a clamping shaft extending upward, and the upper end of the mounting seat is provided with a rotating block for clamping the clamping shaft.

3. A lead welding device for varistor production according to claim 1 or 2, characterized in that: There are two slide grooves, and a slider and a spring are arranged inside each slide groove.

4. A lead welding device for varistor production according to claim 1, characterized in that: A transverse limiting plate (2072) is provided at one end of the L-shaped plate away from another L-shaped plate in the same group.

5. A lead welding device for varistor production according to claim 1 or 4, characterized in that: The number of the first clamping components and the number of the second clamping components are both five.

6. A lead welding device for varistor production according to claim 1, characterized in that: The inner sides of the L-shaped plate and the vertical plate are both provided with rubber pads.

7. A lead welding device for varistor production according to claim 1, characterized in that: The pay-off roller (3) is arranged one on each side of the workbench.

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