Pin welding device for piezoresistor

Abstract

The utility model discloses a pin welding device for a piezoresistor, which relates to the technical field of piezoresistor welding and comprises a workbench, a spot welding machine arranged on the workbench, a welding head arranged on the spot welding machine, a flue gas purification mechanism arranged on the welding head, a rotating disc rotationally arranged above the workbench, a strip-shaped seat fixedly mounted on the rotating disc, a fixing mechanism is arranged on the strip-shaped seat in a sliding mode, a U-shaped abutting sleeve adjusting mechanism is arranged on the strip-shaped seat and the fixing mechanism, a welding position adjusting mechanism is arranged on the workbench and the rotating disc, and a wire harness supporting piece and an illuminating lamp are fixedly installed on the workbench. According to the utility model, through the arrangement of the rotating disc, the welding position adjusting mechanism, the fixing mechanism, the flue gas purifying mechanism and the like, circuit boards with different sizes can be clamped and fixed when the piezoresistor is welded, and the position of the circuit board can be adjusted according to requirements, so that the welding of the piezoresistor is facilitated, and white smoke generated by welding is absorbed and purified.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pressure sensitive resistance welding, especially to a pin welding device for pressure sensitive resistance. BACKGROUND

[0002] The pressure sensitive resistance is a sensitive element with the sharp increase of current along with the increase of voltage within a certain voltage range.

[0003] When the pressure sensitive resistance is damaged, the original damaged pressure sensitive resistance on the circuit board needs to be removed, and the replaced pressure sensitive resistance needs to be welded on the circuit board. At present, the pressure sensitive resistance is mainly replaced by welding machine. When operating, the pin of the pressure sensitive resistance is welded on the corresponding point of the circuit board by the welding head of the welding machine. However, the circuit board is placed on the table top during welding, and the surface of the circuit board has many electrical components. The movement of the circuit board on the table top not only causes the wear of the circuit board, but also causes interference to the welding. In addition, the white smoke generated during welding has a pungent smell, which will affect the health of the welder if inhaled. Therefore, a pin welding device for pressure sensitive resistance is needed to meet the use requirement. SUMMARY

[0004] The utility model discloses a pin welding device for pressure sensitive resistance, which solves the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pin welding device for pressure sensitive resistance, comprising a workbench, a spot welding machine is arranged on the workbench, a welding head is arranged on the spot welding machine, a smoke purification mechanism is arranged on the welding head, a turntable is rotatably arranged above the workbench, a strip-shaped seat is fixedly installed on the turntable, a fixing mechanism is slidably arranged on the strip-shaped seat, a U-shaped abutting sleeve adjusting mechanism is arranged on the strip-shaped seat and the fixing mechanism, a welding position adjusting mechanism is arranged on the workbench and the turntable, a wire harness support and a lighting lamp are fixedly installed on the workbench.

[0006] Preferably, the smoke purification mechanism comprises a purification cylinder fixedly installed on the welding head, and the purification cylinder is provided with a particulate matter adsorption layer, a harmful substance purification layer, an activated carbon odor removal layer and a micro air suction fan.

[0007] Preferably, a cover plate is arranged on the purification cylinder, a smoke outlet is formed in the smoke outlet end of the purification cylinder, and a smoke suction pipe is fixedly installed in the smoke inlet end of the purification cylinder.

[0008] Preferably, the fixing mechanism comprises a U-shaped abutting sleeve slidably arranged above the strip-shaped seat, a fixing plate is fixedly installed in the U-shaped abutting sleeve, a movable clamping plate is slidably installed in the fixing plate, and a contact soft pad is fixedly installed at the bottom of the movable clamping plate.

[0009] Preferably, the top of the U-shaped abutting sleeve is screwed with a micro adjusting screw, the bottom end of the micro adjusting screw is fixedly sleeved with a retaining ring, and the retaining ring is rotatably installed in the movable clamping plate.

[0010] Preferably, the U-shaped abutting sleeve adjusting mechanism comprises an adjusting screw rotatably arranged in the strip-shaped seat, a No. 1 sleeve nut and a No. 2 sleeve nut movably sleeved on the adjusting screw, guide slides fixedly installed on the No. 1 sleeve nut and the No. 2 sleeve nut, and the U-shaped abutting sleeve fixedly installed on the guide slides, and the guide slides are slidably installed in the strip-shaped seat.

[0011] Preferably, the welding position adjusting mechanism comprises a driven shaft rotatably installed on the workbench, a rotating disc fixedly installed on the driven shaft, a driven gear fixedly sleeved on the driven shaft, a driving gear meshedly installed on the driven gear, a driving motor fixedly installed at the bottom of the workbench, a driving shaft fixedly installed at the output end of the driving motor, and the driving gear is fixedly installed on the driving shaft.

[0012] The pressure-sensitive resistor pin welding device has the advantages that:

[0013] In the pressure-sensitive resistor pin welding device, the adjusting screw is rotatable to drive the guide slides to slide on the strip-shaped seat and approach each other, so that a group of U-shaped abutting sleeves can be driven to move and approach each other to tightly abut against the two sides of the circuit board, and the circuit board of different sizes and thicknesses can be adapted.

[0014] In the pressure-sensitive resistor pin welding device, the welding white smoke is sucked into the purification cylinder under the action of the micro suction fan, and the white smoke in the purification cylinder is purified by the particulate matter adsorption layer, the harmful substance purification layer and the activated carbon odor removal layer, so that the harmful substances and irritating odors in the white smoke are removed, and the white smoke is prevented from being inhaled by the welder to affect the health of the welder. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A three-dimensional structure schematic view of the pressure-sensitive resistor pin welding device is provided.

[0016] Figure 2The utility model provides a kind of pin welding device for piezoresistor's purification cylinder, smoke pipe, smoke outlet etc.

[0017] Figure 3 The utility model provides a kind of pin welding device for piezoresistor's driven gear, driving gear etc.

[0018] Figure 4 The utility model provides a kind of pin welding device for piezoresistor's U type abutment cover, movable clamping plate etc.

[0019] Figure 5 The utility model provides a kind of pin welding device for piezoresistor's retaining ring, miniature adjusting screw etc.

[0020] In the drawing: 1, workbench;2, spot welder;3, welding head;4, flue gas purification mechanism;41, purification cylinder;42, particulate matter adsorption layer;43, harmful substance purification layer;44, activated carbon odor removal layer;45, miniature air suction fan;46, cover plate;47, smoke outlet;48, smoke pipe;5, rotary disc;6, strip seat;7, fixed mechanism;71, U type abutment cover;72, fixed plate;73, movable clamping plate;74, contact soft pad;75, retaining ring;76, miniature adjusting screw;8, U type abutment cover adjusting mechanism;81, adjusting screw;82, No. 1 screw sleeve;83, No. 2 screw sleeve;84, guide slide;9, welding position adjusting mechanism;91, driven shaft;92, driven gear;93, driving gear;94, driving motor;95, driving shaft;10, wire harness support;11, illuminating lamp. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] Embodiment:

[0023] As Figures 1-5 shown, the utility model provides a kind of pin welding device for piezoresistor, including workbench 1, workbench 1 is provided with spot welder 2, spot welder 2 is provided with welding head 3, welding head 3 is provided with flue gas purification mechanism 4, rotary disc 5 is rotationally arranged on the top of workbench 1, strip seat 6 is fixedly installed on rotary disc 5, fixed mechanism 7 is slidably arranged on strip seat 6, U type abutment cover adjusting mechanism 8 is arranged on strip seat 6 and fixed mechanism 7, welding position adjusting mechanism 9 is arranged on workbench 1 and rotary disc 5, wire harness support 10 and illuminating lamp 11 are fixedly installed on workbench 1;

[0024] The circuit board to be welded with a pressure sensitive resistor is placed between a set of fixing mechanisms 7, a set of fixing mechanisms 7 is driven to move and abut against each other by a U-shaped abutting sleeve adjusting mechanism 8 to abut against both sides of the circuit board, then the circuit board is clamped and fixed by the fixing mechanisms 7, and the circuit board is kept horizontal, facilitating the welding of the pressure sensitive resistor, and being suitable for circuit boards of different sizes and thicknesses. During welding, the pins of the pressure sensitive resistor are aligned with the welding points on the circuit board, the welding head 3 is adjusted by the spot welding machine 2, then the pins of the pressure sensitive resistor are welded on the corresponding points on the circuit board by the welding head 3, the irritating white smoke generated during welding is absorbed and purified by the smoke purification mechanism 4 and discharged, avoiding that the white smoke is inhaled by the welder and affecting the health of the welder. The welding position adjusting mechanism 9 can adjust the position of the circuit board during welding, facilitating the welding of the thermistor. The wire harness support 10 can support the wire harness on the spot welding machine 2, and the illuminating lamp 11 can provide strong illumination during welding, facilitating the fine operation of the welder.

[0025] In the embodiment of the utility model, specifically, the smoke purification mechanism 4 includes the purification cylinder 41 fixedly installed on the welding head 3, the purification cylinder 41 is provided with the particulate matter adsorption layer 42, the harmful substance purification layer 43, the activated carbon odor removal layer 44 and the micro suction fan 45 respectively;

[0026] In order to absorb and purify the white smoke generated during welding. The white smoke generated during welding will be sucked into the purification cylinder 41 under the action of the micro suction fan 45, and the white smoke entering the purification cylinder 41 will be purified by the particulate matter adsorption layer 42, the harmful substance purification layer 43 and the activated carbon odor removal layer 44, and the harmful substances and irritating odors in the white smoke will be removed.

[0027] In the embodiment of the utility model, further, the purification cylinder 41 is provided with the cover plate 46, the smoke outlet 47 is formed in the smoke outlet end of the purification cylinder 41, and the smoke suction pipe 48 is fixedly installed on the smoke inlet end of the purification cylinder 41;

[0028] In order to facilitate the suction and discharge of the white smoke. The white smoke will be sucked into the purification cylinder 41 through the smoke suction pipe 48, and the purified white smoke will be discharged out of the purification cylinder 41 through the smoke outlet 47.

[0029] In the embodiment of the utility model, specifically, the fixing mechanism 7 includes the U-shaped abutting sleeve 71 slidingly arranged above the strip-shaped seat 6, the fixing plate 72 is fixedly installed in the U-shaped abutting sleeve 71, the movable clamping plate 73 is slidingly installed in the fixing plate 72, and the contact soft pad 74 is fixedly installed at the bottom of the movable clamping plate 73;

[0030] In order to clamp and fix the circuit board and adapt to circuit boards of different sizes. The movable clamping plate 73 is slid downward in the U-shaped abutting sleeve 71 to clamp and fix the circuit board through the fixing plate 72, and the contact soft pad 74 directly contacts the circuit board, so that the damage of the circuit board caused by clamping can be reduced.

[0031] In the embodiment of the utility model, further, the top of U type butt joint cover 71 is screwed with micro type adjusting screw 76, the bottom end of micro type adjusting screw 76 is fixedly sleeved with retaining ring 75, retaining ring 75 is rotatably installed in movable clamping plate 73;

[0032] In order to facilitate the position of movable clamping plate 73, rotating micro type adjusting screw 76 in U type butt joint cover 71 can drive movable clamping plate 73 to descend, and rotating micro type adjusting screw 76 out of U type butt joint cover 71 can drive movable clamping plate 73 to ascend, which facilitates the position adjustment of movable clamping plate 73, and retaining ring 75 can prevent movable clamping plate 73 from falling off micro type adjusting screw 76.

[0033] In the embodiment of the utility model, specifically, U type butt joint cover adjusting mechanism 8 includes adjusting screw 81 rotatably arranged in strip-shaped seat 6, one screw sleeve 82 and second screw sleeve 83 movably sleeved on adjusting screw 81, guide slide 84 fixedly installed on one screw sleeve 82 and second screw sleeve 83, U type butt joint cover 71 fixedly installed on guide slide 84, and guide slide 84 slidingly installed in strip-shaped seat 6;

[0034] In order to adjust the position of a group of fixing mechanisms 7 and adapt to circuit boards of different sizes, rotating adjusting screw 81 can drive one screw sleeve 82 and second screw sleeve 83 to move on adjusting screw 81 and approach each other, thereby driving guide slide 84 to slide on strip-shaped seat 6 and approach each other, so that a group of fixing mechanisms 7 can be driven to move and approach each other, thereby adapting to circuit boards of different sizes.

[0035] In the embodiment of the utility model, specifically, welding position adjusting mechanism 9 includes driven shaft 91 rotatably installed on workbench 1, rotating disc 5 fixedly installed on driven shaft 91, driven gear 92 fixedly sleeved on driven shaft 91, driving gear 93 meshingly installed on driven gear 92, driving motor 94 fixedly installed at the bottom of workbench 1, driving motor 94 fixedly installed on output end, and driving gear 93 fixedly installed on driving shaft 95;

[0036] In order to facilitate the position adjustment of the circuit board, the driving motor 94 can be started during welding, the rotation of the driving motor 94 can drive the driving shaft 95 to rotate, the rotation of the driving shaft 95 can drive the driving gear 93 to rotate, the rotation of the driving gear 93 can drive the driven gear 92 to rotate, the rotation of the driven gear 92 can drive the driven shaft 91 to rotate, the rotation of the driven shaft 91 can drive the rotating disc 5 to rotate, thereby driving the circuit board to rotate, so that the welding position of the circuit board can be adjusted, and the welding of the voltage-dependent resistor is facilitated.

[0037] Working principle: when in use, the circuit board to be welded with the pressure sensitive resistor is placed between a group of U-shaped abutting sleeves 71, the adjusting screw 81 is rotated, the No. 1 screw sleeve 82 and the No. 2 screw sleeve 83 are moved on the adjusting screw 81 and approach each other, the guide slide 84 is driven to slide on the strip-shaped seat 6 and approach each other, so that the group of U-shaped abutting sleeves 71 are driven to move and approach each other to tightly abut the two sides of the circuit board, and the circuit board of different sizes and thicknesses is adapted. When welding, the pins of the pressure sensitive resistor are aligned with the welding points on the circuit board, the welding head 3 is adjusted through the spot welding machine 2, the pins of the pressure sensitive resistor are welded on the corresponding points on the circuit board through the welding head 3, the white smoke generated in the welding process is sucked into the purification cylinder 41 under the action of the micro air suction fan 45, the white smoke entering the purification cylinder 41 is purified through the particulate matter adsorption layer 42, the harmful substance purification layer 43 and the activated carbon odor removal layer 44, the harmful substances and irritating odors in the white smoke are removed, and the white smoke is prevented from being inhaled by the welder to affect the health of the welder. When welding, the driving motor 94 can be started, the driving motor 94 is rotated to drive the driving shaft 95 to rotate, the driving shaft 95 is rotated to drive the driving gear 93 to rotate, the driving gear 93 is rotated to drive the driven gear 92 to rotate, the driven gear 92 is rotated to drive the driven shaft 91 to rotate, the driven shaft 91 is rotated to drive the turntable 5 to rotate, and the circuit board is rotated, so that the welding position of the circuit board is adjusted, and the welding of the pressure sensitive resistor is facilitated.

[0038] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A pin soldering device for pressure sensitive resistors, comprising a worktable (1), characterized in that: The workbench (1) is provided with a spot welding machine (2), the spot welding machine (2) is provided with a welding head (3), the welding head (3) is provided with a smoke purification mechanism (4), the workbench (1) is rotatably provided with a rotating disc (5), the rotating disc (5) is fixedly installed with a strip-shaped seat (6), the strip-shaped seat (6) is slidably provided with a fixing mechanism (7), the strip-shaped seat (6) and the fixing mechanism (7) are provided with a U-shaped abutting sleeve adjusting mechanism (8), the workbench (1) and the rotating disc (5) are provided with a welding position adjusting mechanism (9), and the workbench (1) is fixedly installed with a wire harness support (10) and an illuminating lamp (11).

2. A lead bonding apparatus for a piezoresistor according to claim 1, wherein: The smoke purification mechanism (4) comprises a purification cylinder (41) fixedly installed on the welding head (3), and the purification cylinder (41) is respectively provided with a particulate matter adsorption layer (42), a harmful substance purification layer (43), an activated carbon odor removal layer (44) and a micro suction fan (45) in the purification cylinder (41).

3. A lead bonding apparatus for a piezoresistor according to claim 2, wherein: The purification cylinder (41) is provided with a cover plate (46), a smoke outlet (47) is formed in the smoke outlet end of the purification cylinder (41), and a smoke suction pipe (48) is fixedly installed on the smoke inlet end of the purification cylinder (41).

4. The lead bonding apparatus for a piezoresistor according to claim 1, wherein: The fixing mechanism (7) comprises a U-shaped abutting sleeve (71) slidably arranged above the strip-shaped seat (6), a fixing plate (72) fixedly installed in the U-shaped abutting sleeve (71), and a movable clamping plate (73) slidably installed in the fixing plate (72).

5. A lead bonding apparatus for a piezoresistor according to claim 4, wherein: The bottom of the movable clamping plate (73) is fixedly installed with a contact soft pad (74).

6. A lead bonding apparatus for a piezoresistor according to claim 4, wherein: The top of the U-shaped abutting sleeve (71) is screwed with a micro adjusting screw (76), the bottom end of the micro adjusting screw (76) is fixedly sleeved with a retaining ring (75), and the retaining ring (75) is rotatably installed in the movable clamping plate (73).

7. The lead bonding apparatus for a piezoresistor according to claim 1, wherein: The U-shaped abutting sleeve adjusting mechanism (8) comprises an adjusting screw (81) rotatably arranged in the strip-shaped seat (6), a No. 1 screw sleeve (82) and a No. 2 screw sleeve (83) movably sleeved on the adjusting screw (81), a guide sliding strip (84) fixedly installed on the No. 1 screw sleeve (82) and the No. 2 screw sleeve (83), and the U-shaped abutting sleeve (71) is fixedly installed on the guide sliding strip (84), and the guide sliding strip (84) is slidably installed in the strip-shaped seat (6). The welding position adjusting mechanism (9) comprises a driven shaft (91) rotatably installed on the workbench (1), the rotating disc (5) is fixedly installed on the driven shaft (91), a driven gear (92) is fixedly sleeved on the driven shaft (91), a driving gear (93) is meshedly installed on the driven gear (92), a driving motor (94) is fixedly installed on the bottom of the workbench (1), a driving shaft (95) is fixedly installed on the output end of the driving motor (94), and the driving gear (93) is fixedly installed on the driving shaft (95).

Images