A fully automatic welding equipment for micro switch gold finger

Abstract

The present invention belongs to the technical field of welding equipment, and specifically is a fully automatic welding equipment for micro switch gold fingers, comprising a welding frame; a U-shaped conveyor is installed at the bottom end of the welding frame; a plurality of fixed plates are fixedly connected to the bottom end of the conveyor belt of the U-shaped conveyor; an electric cylinder is fixedly connected to the bottom end of the plurality of fixed plates; a welding machine is fixedly connected to the output end of the electric cylinder; a welding head is fixedly connected to the bottom end of the welding machine; the efficiency of fully automatic welding of micro switch gold fingers is improved by replacing the traditional intermittent welding method with a continuous non-stop welding method, and rapid welding of large quantities of gold finger material strips and silver wires is realized. In addition, by adopting structures such as elastic parts, multiple pressure plates and arc heads, the shaking of the material strips and silver wires during the transportation process is effectively reduced, and the welding accuracy is improved. In combination with the control of the electromagnetic block and the magnetic attraction of the welded parts, the welded finished products can be unloaded during the transportation process.

Description

Technical Field

[0001] The invention belongs to the technical field of welding equipment, in particular to a fully automatic welding equipment for a micro switch gold finger. Background Art

[0002] A micro switch is an electronic switch with a tiny contact spacing and a snap-action mechanism. Its working principle is to quickly connect or disconnect the contacts by applying external force. The gold finger is an important part of the micro switch. Usually, the material strip of the micro switch gold finger is welded with silver wire for signal transmission and control of various functions in the equipment.

[0003] A patent application with publication number CN110480150A discloses a fully automatic welding equipment for micro switch gold fingers, including a motor, a first electric cylinder, a second electric cylinder, a material strip positioning device, a material strip clamping device, a silver wire clamping device, a wire feeding slider, a cutting knife, an upper electrode, a lower electrode, a first cam, a second cam and a third cam. Through the above equipment, the material strip and the silver wire of the entire micro switch gold finger are integrated into one process to complete the production. This application can fine-tune the material strip through the electric cylinder, thereby improving the accuracy of the welding between the material strip and the silver wire of the gold finger.

[0004] When welding the material strip and silver wire of the micro switch gold finger, although the above-mentioned micro switch gold finger fully automatic welding equipment can improve the accuracy of the finished product of the material strip and silver wire welding of the gold finger, it is necessary to weld a group of material strips and silver wires first during the welding process, and wait for the equipment to be reset before continuing to weld the next group of material strips and silver wires. This welding method is intermittent welding, and it is difficult to continuously weld a large number of gold finger material strips and silver wires, thereby affecting the welding efficiency of the micro switch gold finger.

[0005] To this end, the present invention provides a fully automatic welding device for a micro switch gold finger. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the micro switch gold finger fully automatic welding equipment described in the present invention includes a welding frame; a U-shaped conveyor is installed at the bottom end of the welding frame; a plurality of fixed plates are fixedly connected to the bottom end of the conveyor belt of the U-shaped conveyor; an electric cylinder is fixedly connected to the bottom end of the plurality of fixed plates; a welding machine is fixedly connected to the output end of the electric cylinder; a welding head is fixedly connected to the bottom end of the welding machine; a welding seat is arranged below the welding head, and the welding seat is transported and moved by a linear conveyor.

[0008] Preferably, the outer walls of the plurality of welding machines are slidably connected with a sliding frame; an elastic member is fixedly connected between the sliding frame and the inner wall of the welding machine; a No. 1 pressure plate and a No. 2 pressure plate are respectively fixedly connected on both sides of the sliding frame, and the length of the No. 2 pressure plate is longer than that of the No. 1 pressure plate.

[0009] Preferably, a plurality of material strip grooves are provided on the welding seat; a silver wire groove is provided on the welding seat and located on one side of the material strip groove, and the cross-sectional shape of the silver wire groove is a semicircular arc.

[0010] Preferably, an arc-shaped head is fixedly connected to the bottom end of the welding head, and a plurality of small holes are opened at the bottom end of the arc-shaped head; and an electromagnet is fixedly connected to the bottom end of the plurality of second pressure plates.

[0011] Preferably, a feeding box is fixedly connected to one side of the welding frame, and a material storage cavity is provided inside the feeding box; a feeding roller is rotatably connected to the inner wall of the feeding box near the material storage cavity; two material troughs are symmetrically provided on the feeding roller; a transmission gear is fixedly connected to the material trough, and the transmission gear is located outside the feeding box; a tooth plate is fixedly connected to the welding seat, and the teeth on the tooth plate can mesh with the transmission gear.

[0012] Preferably, two No. 1 baffles are symmetrically fixed to the bottom end of the loading box; and No. 2 baffles are fixed to the bottom end of the loading box and on both sides of the No. 1 baffle.

[0013] Preferably, two straightening holes are symmetrically opened on the inner wall at the end of the feeding box; the inner wall of the feeding box is rotatably connected to a No. 1 transmission rod, the No. 1 transmission rod is located between the two straightening holes, and the No. 1 transmission rod is connected to the feeding roller through a No. 1 belt; an electric hot cutter is fixedly connected to the No. 1 transmission rod near the straightening hole.

[0014] Preferably, four No. 2 transmission rods are rotatably connected to the welding frame near the straightening hole, and the four No. 2 transmission rods are arranged opposite to each other in pairs; and a straightening roller is fixedly connected to one end of the four No. 2 transmission rods away from the welding frame.

[0015] Preferably, the welding frame is fixedly connected to a fixing frame near the feeding box; the inner wall of the fixing frame is rotatably connected to a No. 3 transmission rod, and the No. 3 transmission rod is connected to the No. 1 transmission rod through a No. 2 belt; a No. 1 bevel gear is fixedly connected to one end of the No. 3 transmission rod near the No. 2 transmission rod; a No. 2 bevel gear is fixedly connected to the No. 2 transmission rod near the No. 1 bevel gear, and the No. 1 bevel gear and the No. 2 bevel gear can mesh with each other.

[0016] Preferably, the inner wall of the material storage chamber and the position above the loading roller are provided with two opposite slopes, and the bottoms of the two slopes correspond to the material trough.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The fully automatic welding equipment for the gold finger of a micro switch described in the present invention replaces the traditional intermittent welding method with a continuous non-stop welding method, thereby improving the efficiency of fully automatic welding of the gold finger of the micro switch and realizing the rapid welding of large quantities of gold finger material strips and silver wires. In addition, by adopting structures such as elastic parts, multiple pressure plates and arc heads, the shaking of the material strips and silver wires during the transportation process is effectively reduced, and the welding accuracy is improved. With the control of the electromagnetic block and the magnetic attraction of the welded parts, the finished welded products can be unloaded during the transportation process.

[0019] 2. The micro switch gold finger fully automatic welding equipment described in the present invention, by setting the design of the material strip groove and the silver wire groove, can accurately fix the material strip and the silver wire, thereby improving the stability of welding, and through the feeding box, straightening holes, straightening rollers and other devices, it can realize the cutting and feeding of the wheel-wound silver wire, and combined with the inclined surface guidance, it can improve the accuracy of the silver wire entering the material slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the feeding roller in the present invention;

[0023] Figure 3 It is a structural schematic diagram of the sliding frame in the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the straightening roller in the present invention;

[0025] Figure 5 It is a partial structural sectional view of the loading box in the present invention;

[0026] Figure 6 It is a structural schematic diagram of the silver wire groove in the present invention.

[0027] In the figure: 1. welding frame; 11. fixed plate; 12. electric cylinder; 13. welding machine; 14. welding head; 15. welding seat; 2. sliding frame; 21. elastic part; 22. No. 1 pressure plate; 23. No. 2 pressure plate; 3. material belt groove; 31. silver wire groove; 4. arc head; 41. electromagnet; 5. feeding box; 51. feeding roller; 52. material trough; 53. transmission gear; 54. tooth plate; 6. No. 1 baffle; 61. No. 2 baffle; 7. straightening hole; 71. No. 1 transmission rod; 72. electric hot cutter; 8. No. 2 transmission rod; 81. straightening roller; 9. fixed frame; 91. No. 3 transmission rod; 92. No. 1 bevel gear; 93. No. 2 bevel gear. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] like Figures 1 to 3 , Figure 6 As shown, a fully automatic welding device for the gold finger of a micro switch according to an embodiment of the present invention comprises a welding frame 1; a U-shaped conveyor is installed at the bottom end of the welding frame 1; a plurality of fixed plates 11 are fixedly connected to the bottom end of the conveyor belt of the U-shaped conveyor; an electric cylinder 12 is fixedly connected to the bottom end of the plurality of fixed plates 11; a welding machine 13 is fixedly connected to the output end of the electric cylinder 12; a welding head 14 is fixedly connected to the bottom end of the welding machine 13; a welding seat 15 is arranged below the welding head 14, and the welding seat 15 is transported and moved by the linear conveyor; when the micro switch is moved, the welding seat 15 is moved to the bottom end of the micro switch. When the material strip of the gold finger is welded with the silver wire, the material strip of the gold finger and the silver wire are automatically loaded in sequence by the loading mechanism, and a piece of the material strip of the gold finger and a silver wire are combined into a group of welding parts and placed on the welding seat 15. The loading mechanism can be a manipulator used for traditional loading, which is mainly used to load the material strip and the silver wire of the gold finger. The welding seat 15 is transported along with the linear conveyor. The linear conveyor is not shown in the figure. The linear conveyor is located below the welding seat 15. When a group of welding parts are delivered to the bottom of the welding frame 1 When the U-shaped conveyor drives multiple fixed plates 11 to convey synchronously, the conveying speed of the U-shaped conveyor and the linear conveyor are consistent. After a group of welded parts are delivered to the corresponding bottom of the welding head 14 at the bottom of a welding machine 13, the output end of the electric cylinder 12 drives the welding head 14 at the bottom of the welding machine 13 to extend downward. At this time, the U-shaped conveyor and the linear conveyor continue to convey, and then the welding head 14 is attached to the combination of the material belt and the silver wire of the gold finger, and the tin liquid flows down at the same time for pressure welding. After the welding head 14 maintains pressure on the welding point for a short distance, the output end of the electric cylinder 12 drives the welding head 14 is reset, and the welded welding machine 13 is separated from the welded parts along the conveying track of the U-shaped conveyor, so as to facilitate the next welding. At the same time, while the previous group of welded parts is welded by the previous welding machine 13, the following group of welded parts arrives under the following welding machine 13, and then the following group of welded parts are welded. The welding work is continuously performed in this way, replacing the traditional intermittent welding method. A large number of gold finger material strips and silver wires are welded in a continuous and non-stop manner, thereby improving the efficiency of fully automatic welding of micro switch gold fingers.

[0030] like Figures 1 to 3As shown, the outer walls of the plurality of welding machines 13 are slidably connected with a sliding frame 2; an elastic member 21 is fixedly connected between the sliding frame 2 and the inner wall of the welding machine 13; a No. 1 pressing plate 22 and a No. 2 pressing plate 23 are respectively fixedly connected on both sides of the sliding frame 2, and the length of the No. 2 pressing plate 23 is longer than the length of the No. 1 pressing plate 22; when the material strip and the silver wire of the gold finger are transported and welded, since shaking is easily generated during the transportation process, thereby affecting the welding effect, when the welding head 14 at the bottom of the welding machine 13 is driven by the electric cylinder 12 to extend downward and approach the welding point, the No. 1 pressing plate 22 and the No. 2 pressing plate 23 are respectively pressed on the silver wire and the material strip, and as the output end of the electric cylinder 12 continues to press downward, the No. 1 pressing plate 22 and the No. 2 pressing plate 23 drive the sliding frame 2 to squeeze and contract the elastic member 21, thereby reducing the shaking of the material strip and the silver wire until the welding head 14 reaches the welding point for welding, thereby improving the accuracy of automated welding.

[0031] like Figures 1 to 3 , Figure 6 As shown, a plurality of material strip grooves 3 are provided on the welding seat 15; a silver wire groove 31 is provided on the welding seat 15 and on one side of the material strip groove 3, and the cross-sectional shape of the silver wire groove 31 is semicircular; before welding the gold finger material strip and the silver wire, the material strip is first placed on the material strip groove 3 provided on the welding seat 15 by a manipulator of the feeding mechanism, and the material strip groove 3 can limit the material strip, and then the silver wire is placed on the silver wire groove 31, and the silver wire groove 31 can limit the silver wire, and at the same time, the semicircular silver wire groove 31 can more conveniently guide the silver wire into its inner wall, and one end of the silver wire is placed on the material strip to form a welding point, thereby improving the stability of welding the material strip and the silver wire.

[0032] like Figures 1 to 3 As shown, the bottom end of the welding head 14 is fixedly connected with an arc head 4, and the bottom end of the arc head 4 is provided with a plurality of small holes; the bottom ends of the plurality of the second pressure plates 23 are fixedly connected with an electromagnet 41; when welding the gold finger material strip and the silver wire, the arc head 4 is fixed to the bottom end of the welding head 14 as a new welding head, and the arc head 4 can be more closely fitted to the welding point formed by the combination of the material strip and the silver wire, thereby improving the welding effect, and after the welding is completed, the electromagnet 41 is started, and the electromagnet 41 can magnetically attract the welded part after welding, and as the output end of the electric cylinder 12 drives the welding machine 13 to reset, the electromagnet 41 is synchronously driven to magnetically pick up the welded part away from the welding seat 15 under the transportation of the U-shaped conveyor, and then when it leaves the welding seat 15 and reaches the unloading place, the electromagnet 41 stops magnetic attraction, which plays a role in picking up and unloading the welded part.

[0033] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, a loading box 5 is fixedly connected to one side of the welding frame 1, and a storage cavity is provided inside the loading box 5; a loading roller 51 is rotatably connected to the inner wall of the loading box 5 near the storage cavity; two material troughs 52 are symmetrically provided on the loading roller 51; a transmission gear 53 is fixedly connected to the material trough 52, and the transmission gear 53 is located outside the loading box 5; a tooth plate 54 is fixedly connected to the welding seat 15, and the teeth on the tooth plate 54 can mesh with the transmission gear 53; when feeding the silver wire, a large amount of cut silver wire is placed in the storage cavity of the loading box 5, and as the linear conveyor drives the welding seat 15 to move, the tooth plate 54 is driven The transmission gears 53 that mesh with each other rotate synchronously, and the transmission gears 53 synchronously drive the feeding roller 51 to rotate. Whenever one of the two material troughs 52 corresponds to the material storage cavity, a silver wire cut into the same size as the material trough 52 falls into the material trough 52. As the feeding roller 51 continues to rotate, the silver wire in the material trough 52 rotates from the top to the bottom and then falls. The silver wire falls into the silver wire trough 31 and is combined with the material belt inside the material belt trough 3. Every time the feeding roller 51 rotates half a circle, the unloaded silver wire can be guided along the semicircular arc surface of the silver wire trough 31 and fall into its inner wall. The feeding is continued in this way, which replaces the traditional manipulator feeding silver wire and plays a role in feeding the silver wire.

[0034] Two No. 1 baffles 6 are symmetrically fixed to the bottom end of the feeding box 5; No. 2 baffles 61 are fixed to the bottom end of the feeding box 5 and on both sides of the No. 1 baffle 6; when the feeding roller 51 rotates to feed the silver wire, the silver wire rotates half a circle in the material trough 52 along with the feeding roller 51, and the material trough 52 containing the silver wire rotates from the top to the bottom. At this time, the silver wire in the material trough 52 falls due to gravity, and is guided by the inner walls of the No. 1 baffle 6 and the two No. 2 baffles 61, so that the silver wire can accurately fall into the inner wall of the silver wire trough 31 and be placed, and combined with the material belt inside the material belt trough 3, thereby improving the accuracy of the silver wire falling into the silver wire trough 31.

[0035] The inner wall of the end of the feeding box 5 is symmetrically provided with two straightening holes 7; the inner wall of the feeding box 5 is rotatably connected to a No. 1 transmission rod 71, the No. 1 transmission rod 71 is located between the two straightening holes 7, and the No. 1 transmission rod 71 is connected to the feeding roller 51 through a No. 1 belt; an electric hot cutter 72 is fixedly connected to the No. 1 transmission rod 71 near the straightening hole 7; when feeding the silver wire wound by the wheel, since the silver wire wound by the wheel is easy to bend, it is necessary to pass through the two before using the silver wire. Straightening is carried out in the straightening hole 7, and the two silver wires straightened by the two straightening holes 7 reach the electric hot cutter 72, and the No. 1 transmission rod 71 rotates synchronously with the feeding roller 51 connected to the No. 1 belt, and the No. 1 transmission rod 71 drives the heated electric hot cutter 72 to cut the two silver wires respectively, and the cut silver wires are pushed into the straightening hole 7 and fall into the storage cavity for temporary storage. When the material trough 52 corresponds to the storage cavity, it is taken out for use, which plays the role of cutting and feeding the wound silver wires.

[0036] Four No. 2 transmission rods 8 are rotatably connected to the welding frame 1 near the straightening hole 7, and the four No. 2 transmission rods 8 are arranged opposite to each other in pairs; a straightening roller 81 is fixedly connected to one end of the four No. 2 transmission rods 8 away from the welding frame 1; when the silver wire wound on the wheel is cut, the two silver wires are pushed through the four straightening rollers 81 respectively, and the four straightening rollers 81 are fixed on the four No. 2 transmission rods 8, and the four straightening rollers 81 clamp the two silver wires in pairs respectively. As the silver wires are pushed, the four straightening rollers 81 pre-straighten the two silver wires, so that the silver wires can enter the internal cutting of the straightening hole 7 more smoothly, thereby playing a role in pre-straightening the silver wires.

[0037] The welding frame 1 is fixedly connected with a fixing frame 9 near the feeding box 5; the inner wall of the fixing frame 9 is rotatably connected with a No. 3 transmission rod 91, and the No. 3 transmission rod 91 is connected to the No. 1 transmission rod 71 through a No. 2 belt; the No. 1 bevel gear 92 is fixedly connected to one end of the No. 3 transmission rod 91 near the No. 2 transmission rod 8; the No. 2 bevel gear 93 is fixedly connected to the No. 2 transmission rod 8 near the No. 1 bevel gear 92, and the No. 1 bevel gear 92 and the No. 2 bevel gear 93 can mesh with each other; when the silver wire is cut into sections, the thrust of the wheel before the silver wire enters the straightening hole 7 Push forward. This method lacks the pulling force to pull the silver wire forward and is prone to bending deformation. The No. 1 transmission rod 71 rotates with the feeding roller 51, and synchronously drives the No. 3 transmission rod 91 connected to the No. 2 belt to rotate on the inner wall of the fixed frame 9. The No. 3 transmission rod 91 drives the No. 1 bevel gear 92 and the No. 2 bevel gear 93 that meshes with each other to rotate. The No. 2 bevel gear 93 drives a No. 2 transmission rod 8 to rotate, so that the two fitted straightening rollers 81 are squeezed and rotated synchronously. The two straightening rollers 81 clamp the two silver wires and pull them to assist in entering the straightening hole 7, thereby improving the feeding and segmentation effect of the two silver wires.

[0038] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the inner wall of the material storage chamber and the position above the loading roller 51 are provided with two opposite slopes, and the bottoms of the two slopes correspond to the material trough 52; when the silver wire in the material storage chamber is lowered for loading, the cut silver wire is temporarily stored at the two slopes of the material storage chamber, and guided by the two slopes, every time a material trough 52 rotates to between the two slopes with the loading roller 51, a silver wire falls into the inner wall of the material trough 52 for temporary storage, and the loading roller 51 continuously drives the silver wire in the material trough 52 to rotate to the lower position, and the silver wire falls onto the welding seat 15 by gravity, and the method of storing the silver wire by two slopes can improve the accuracy of a silver wire entering the material trough 52.

[0039] Working process: When welding the material strip and silver wire of the micro switch gold finger, the material strip and silver wire of the gold finger are automatically loaded in sequence through the loading mechanism, and a piece of gold finger material strip and a silver wire are combined into a group of welding parts and placed on the welding seat 15. The loading mechanism can be a manipulator used for traditional loading, which is mainly used to load the material strip and silver wire of the gold finger. The welding seat 15 is transported along with the linear conveyor. The linear conveyor is not shown in the figure. The linear conveyor is located below the welding seat 15. When a group of welding parts are delivered to the welding seat 15, the welding seat 15 is connected to the welding seat 15. When the frame 1 is under the U-shaped conveyor, the U-shaped conveyor drives multiple fixed plates 11 to convey synchronously. The conveying speed of the U-shaped conveyor and the linear conveyor is consistent. After a group of welded parts are sent to the corresponding bottom of the welding head 14 at the bottom of a welding machine 13, the output end of the electric cylinder 12 drives the welding head 14 at the bottom of the welding machine 13 to extend downward. At this time, the U-shaped conveyor and the linear conveyor continue to convey, and then the welding head 14 is attached to the combination of the material belt and the silver wire of the gold finger, and the tin liquid flows down at the same time for pressure welding. After the welding head 14 maintains pressure on the welding point for a short distance, the output end of the electric cylinder 12 drives The welding head 14 is reset, and the welder 13 being welded is separated from the welded part along the conveying track of the U-shaped conveyor, so as to facilitate the next welding. Meanwhile, while the previous group of welded parts is welded by the previous welder 13, the next group of welded parts arrives under the next welder 13, and then the next group of welded parts are welded. The welding work is continuously performed in this way, replacing the traditional intermittent welding method, and welding the material strips and silver wires of a large number of gold fingers in a continuous and non-stop manner, thereby improving the efficiency of the fully automatic welding of the gold fingers of the micro switch; when the When the material strip of the gold finger and the silver wire are transported for welding, shaking is likely to occur during the transportation process, thereby affecting the welding effect. When the welding head 14 at the bottom of the welding machine 13 is driven by the electric cylinder 12 to extend downward close to the welding position, the first pressing plate 22 and the second pressing plate 23 are respectively pressed on the silver wire and the material strip. As the output end of the electric cylinder 12 continues to press downward, the first pressing plate 22 and the second pressing plate 23 drive the sliding frame 2 to squeeze and contract the elastic member 21, reducing the shaking of the material strip and the silver wire until the welding head 14 reaches the welding position for welding, thereby improving the accuracy of automated welding;

[0040] Before welding the gold finger material strip and the silver wire, the material strip is first placed on the material strip groove 3 opened on the welding seat 15 by the manipulator of the feeding mechanism. The material strip groove 3 can limit the material strip, and then the silver wire is placed on the silver wire groove 31. The silver wire groove 31 can limit the silver wire. At the same time, the semicircular silver wire groove 31 can more conveniently guide the silver wire into its inner wall. One end of the silver wire is placed on the material strip to form a welding point, thereby improving the stability of welding the material strip and the silver wire.

[0041] When welding the gold finger material strip and the silver wire, the arc head 4 is fixed on the bottom end of the welding head 14 as a new welding head. The arc head 4 can be more closely fitted to the welding point formed by the combination of the material strip and the silver wire, thereby improving the welding effect. After the welding is completed, the electromagnet 41 is started, and the electromagnet 41 can magnetically attract the welded part after welding. As the output end of the electric cylinder 12 drives the welding machine 13 to reset, the electromagnet 41 is synchronously driven to magnetically pick up the welded part away from the welding seat 15 under the transportation of the U-shaped conveyor. Then, when it leaves the welding seat 15 and reaches the unloading place, the electromagnet 41 stops magnetic attraction, which plays a role in picking up and unloading the welded part.

[0042] When silver wire is loaded, a large amount of cut silver wire is placed in the storage chamber of the loading box 5. As the linear conveyor drives the welding seat 15 to move, the tooth plate 54 drives the mutually meshing transmission gear 53 to rotate, and the transmission gear 53 synchronously drives the loading roller 51 to rotate. Whenever one of the two material troughs 52 corresponds to the storage chamber, a cut silver wire of the same size as the material trough 52 falls into the material trough 52. As the loading roller 51 continues to rotate, the silver wire in the material trough 52 rotates from the top to the bottom and then falls. The silver wire falls into the silver wire trough 31 and is combined with the material belt inside the material belt trough 3. Every time the loading roller 51 rotates half a circle, the unloaded silver wire can be guided along the semicircular arc surface of the silver wire trough 31 and fall into its inner wall. The loading is continued in this way, which replaces the traditional manipulator loading silver wire and plays the role of loading silver wire. When the silver wire in the storage chamber is lowered for loading, the cut silver wire The silver wire is placed at the two slopes of the material storage cavity for temporary storage. Through the guidance of the two slopes, whenever a material trough 52 rotates to between the two slopes with the feeding roller 51, a silver wire falls into the inner wall of the material trough 52 for temporary storage. The feeding roller 51 continuously drives the silver wire in the material trough 52 to rotate to the lower position, and the silver wire falls onto the welding seat 15 by gravity. The method of storing the silver wire by two slopes can improve the accuracy of a silver wire entering the material trough 52; when the feeding roller 51 rotates to feed the silver wire, the silver wire rotates half a circle in the material trough 52 with the feeding roller 51, and the material trough 52 containing the silver wire rotates from the upper side to the lower side. At this time, the silver wire in the material trough 52 falls due to gravity, and is guided by the inner wall of the No. 1 baffle 6 and the two No. 2 baffles 61, so that the silver wire can accurately fall into the inner wall of the silver wire trough 31 for placement, and is combined with the material belt inside the material belt trough 3, thereby improving the accuracy of the silver wire falling into the silver wire trough 31;

[0043] When the silver wire wound up on the wheel is fed, since the silver wire wound up on the wheel is easy to bend, it needs to be straightened through the two straightening holes 7 before use. The two silver wires straightened by the two straightening holes 7 reach the electric hot cutter 72, and the No. 1 transmission rod 71 rotates synchronously with the feeding roller 51 connected to the No. 1 belt. The No. 1 transmission rod 71 drives the heated electric hot cutter 72 to cut the two silver wires respectively. The cut silver wire is pushed into the straightening hole 7 and falls into the material storage cavity for temporary storage. When the material trough 52 corresponds to the material storage cavity, it is taken out for use, which plays the role of cutting and feeding the wound silver wire; when the silver wire wound up on the wheel is cut, the two silver wires are pushed through the four straightening rollers 81 respectively. The four straightening rollers 81 are fixed on the four No. 2 transmission rods 8, and the four straightening rollers 81 clamp the two silver wires in pairs. As the silver wires are pushed into the straightening hole 7, the four straightening rollers 81 clamp the two silver wires in pairs. The four straightening rollers 81 pre-straighten the two silver wires, so that the silver wires can enter the straightening hole 7 more smoothly for cutting, which plays a role in pre-straightening the silver wires; when the silver wires are fed and cut into sections, the silver wires are pushed forward by the thrust of the wheel before entering the straightening hole 7. This method lacks the pulling force to pull the silver wires forward and is prone to bending deformation. The No. 1 transmission rod 71 rotates with the feeding roller 51, and synchronously drives the No. 3 transmission rod 91 connected to the No. 2 belt to rotate on the inner wall of the fixed frame 9. The No. 3 transmission rod 91 drives the No. 1 bevel gear 92 and the No. 2 bevel gear 93 that meshes with each other to rotate. The No. 2 bevel gear 93 drives a No. 2 transmission rod 8 to rotate, so that the two fitted straightening rollers 81 are squeezed and rotated synchronously, and the two straightening rollers 81 clamp the two silver wires and pull them to assist in entering the straightening hole 7, thereby improving the feeding and segmentation effect of the two silver wires.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A fully automatic welding equipment for micro switch gold finger, characterized by: The invention comprises a welding frame (1); a U-shaped conveyor is installed at the bottom end of the welding frame (1); a plurality of fixed plates (11) are fixedly connected to the bottom end of the conveyor belt of the U-shaped conveyor; an electric cylinder (12) is fixedly connected to the bottom end of the plurality of fixed plates (11); a welding machine (13) is fixedly connected to the output end of the electric cylinder (12); a welding head (14) is fixedly connected to the bottom end of the welding machine (13); a welding seat (15) is provided at the bottom end of the welding head (14), and the welding seat (15) is transported and moved by the linear conveyor; The welding seat (15) is provided with a plurality of material strip grooves (3); a silver wire groove (31) is provided on the welding seat (15) and located on one side of the material strip groove (3), and the cross-sectional shape of the silver wire groove (31) is a semicircular arc; A loading box (5) is fixedly connected to one side of the welding frame (1), and a material storage cavity is provided inside the loading box (5); a loading roller (51) is rotatably connected to the inner wall of the loading box (5) near the material storage cavity; two material troughs (52) are symmetrically provided on the loading roller (51); a transmission gear (53) is fixedly connected to the material trough (52), and the transmission gear (53) is located outside the loading box (5); a tooth plate (54) is fixedly connected to the welding seat (15), and the teeth on the tooth plate (54) can mesh with the transmission gear (53); Two No. 1 baffles (6) are symmetrically fixedly connected to the bottom end of the loading box (5); and No. 2 baffles (61) are fixedly connected to the bottom end of the loading box (5) and on both sides of the No. 1 baffle (6).

2. According to claim 1, the fully automatic welding equipment for the gold finger of a micro switch is characterized in that: The outer walls of the plurality of welding machines (13) are slidably connected to a sliding frame (2); an elastic member (21) is fixedly connected between the sliding frame (2) and the inner wall of the welding machine (13); a first pressing plate (22) and a second pressing plate (23) are respectively fixedly connected to the two sides of the sliding frame (2), and the length of the second pressing plate (23) is longer than the length of the first pressing plate (22).

3. The fully automatic welding equipment for the gold finger of a micro switch according to claim 2 is characterized by: The bottom end of the welding head (14) is fixedly connected to an arc-shaped head (4), and a plurality of small holes are formed at the bottom end of the arc-shaped head (4); and the bottom ends of the plurality of second pressure plates (23) are fixedly connected to electromagnets (41).

4. The fully automatic welding equipment for the gold finger of a micro switch according to claim 1 is characterized in that: Two straightening holes (7) are symmetrically formed on the inner wall of the end of the feeding box (5); a No. 1 transmission rod (71) is rotatably connected to the inner wall of the feeding box (5); the No. 1 transmission rod (71) is located between the two straightening holes (7), and the No. 1 transmission rod (71) is connected to the feeding roller (51) via a No. 1 belt; an electric hot cutter (72) is fixedly connected to the No. 1 transmission rod (71) near the straightening hole (7).

5. The fully automatic welding equipment for the gold finger of a micro switch according to claim 4 is characterized in that: Four No. 2 transmission rods (8) are rotatably connected to the welding frame (1) near the straightening hole (7), and the four No. 2 transmission rods (8) are arranged opposite to each other in pairs; and a straightening roller (81) is fixedly connected to one end of the four No. 2 transmission rods (8) away from the welding frame (1).

6. The fully automatic welding equipment for the gold finger of a micro switch according to claim 5 is characterized by: The welding frame (1) is fixedly connected to a fixing frame (9) near the loading box (5); a third transmission rod (91) is rotatably connected to the inner wall of the fixing frame (9), and the third transmission rod (91) is connected to the first transmission rod (71) via a second belt; a first bevel gear (92) is fixedly connected to one end of the third transmission rod (91) near the second transmission rod (8); a second bevel gear (93) is fixedly connected to the second transmission rod (8) near the first bevel gear (92), and the first bevel gear (92) and the second bevel gear (93) are capable of meshing with each other.

7. The fully automatic welding equipment for the gold finger of a micro switch according to claim 1 is characterized by: The inner wall of the material storage cavity and the position above the loading roller (51) are provided with two opposite slopes, and the bottoms of the two slopes correspond to the material trough (52).

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