Enameled wire welding device and method for wiring harness terminal

Abstract

The present invention belongs to the technical field of enameled wire welding, and specifically, is an enameled wire welding device and method for wiring harness terminals, comprising a spot welding body, a fixing frame fixedly connected to one side of the spot welding body, a cleaning component arranged on one side of the fixing frame, the cleaning component comprising a frosting plate, the frosting plate being used for cleaning the lower surface of an upper welding plate, a fixing plate being fixedly connected to a position of the spot welding body corresponding to the upper welding plate, a lower welding plate being fixedly connected to the upper surface of the fixing plate; a driving component being arranged on the upper surface of the fixing plate, the driving component being used for driving the upper welding plate to be cleaned during the upward movement; a coating component being arranged on one side of the cleaning component, the coating component being used for coating a layer of polytetrafluoroethylene coating on the lower surface of the upper welding plate after cleaning, and the provision of the frosting plate solves the problem that it is difficult to observe whether there is welding slag on the lower surface of the upper welding plate and the cleaning process is cumbersome.

Description

Technical Field

[0001] The invention belongs to the technical field of enameled wire welding, in particular to an enameled wire welding device and method for a wiring harness terminal. Background Art

[0002] The enameled wire welding equipment for wiring harness terminals is a tool specially used for welding wiring harness terminals and enameled wires. It uses advanced welding technology, such as inverter DC spot welding, to achieve automatic paint stripping and firm welding of enameled wires. It is widely used in the production and manufacturing fields of motors, electronic components, etc.

[0003] In the conventional welding process of enameled wires, the enameled wires in the form of a wire bundle are first placed on the lower welding plate, and then the upper welding plate and the lower welding plate are started, so that the two spot welding plates are energized. After the current is turned on, the high-temperature arc or resistance heat generated when the positive and negative electrodes in the two spot welding plates are short-circuited instantly is used to partially melt the welded material between the wire bundle enameled wires and the contact surfaces of the two spot welding plates. After the power is turned off, the pressure is maintained so that the molten core is cooled and solidified under pressure to form a welding spot, thereby achieving the purpose of welding;

[0004] However, in the existing spot welding process of the enameled wire bundle, the temperature of the welding point will exceed the reasonable range due to the excessive current, thereby generating welding slag. The welding slag will adhere to the lower surface of the upper welding plate, but it is not easy to be observed. In addition, the spot welding process is fast, and the spot welding of the next bundle of enameled wires will be carried out immediately after the welding of one bundle of enameled wires is completed. As a result, the welding slag remaining on the lower surface of the upper welding plate may be welded to the surface of the bundle of enameled wires, resulting in a decrease in the quality of the bundle of enameled wires. At the same time, if the spot welding machine is cleaned separately, the spot welding machine needs to be stopped to allow the upper welding plate to cool for a certain period of time before cleaning. This process is slow, which affects the production efficiency of enameled wire welding.

[0005] To this end, the present invention provides an enameled wire welding device and method for a wiring harness terminal. 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 the technical problem is as follows: the enameled wire welding equipment of the wiring harness terminal of the present invention comprises a spot welding body, a fixing frame is fixedly connected to one side of the spot welding body, a cleaning assembly is arranged on one side of the fixing frame, the cleaning assembly comprises a frosting plate, the frosting plate is used to clean the lower surface of the upper welding plate, the position of the spot welding body corresponding to the upper welding plate is fixedly connected to the fixing plate, and the upper surface of the fixing plate is fixedly connected to the lower welding plate;

[0008] A driving assembly is provided on the upper surface of the fixed plate, and the driving assembly is used to drive the upper welding plate to be cleaned during the upward movement;

[0009] A coating component is provided on one side of the cleaning component, and the coating component is used to coat a layer of polytetrafluoroethylene coating on the lower surface of the upper welding plate after cleaning. The coated polytetrafluoroethylene coating is used to reduce the adhesion of welding slag on the surface of the upper welding plate.

[0010] Preferably, the driving assembly includes a first hydraulic cylinder fixedly connected to the upper surface of the fixed plate, the output end of the first hydraulic cylinder is fixedly connected to a sliding plate, two limiting columns are fixedly connected to the upper surface of the fixed plate, the sliding plate can slide up and down along the limiting columns, the internal rotation of the sliding plate is connected to a rotating shaft, the circumferential surface of the rotating shaft is fixedly connected to an upper welding plate, and the rotating shaft cooperates with the rotating assembly to drive the upper welding plate to rotate.

[0011] Preferably, a fixed box is fixedly connected to one side of the fixed frame, and the cleaning assembly also includes a second hydraulic cylinder fixedly connected to one side of the fixed box, the output end of the second hydraulic cylinder is fixedly connected to a connecting plate, the lower surface of the connecting plate is fixedly connected to a fixed shaft, the circumferential surface of the fixed shaft is rotatably connected to a grinding plate, and two first springs are fixedly connected between the grinding plate and the connecting plate.

[0012] Preferably, the two first springs have different lengths. When the upper welding plate abuts against the frosting plate, the two first springs can better fit the movement trajectory of the upper welding plate, so that the frosting plate can achieve a tighter cleaning effect, and the frosting plate can also be automatically reset.

[0013] Preferably, the rotating assembly includes a gear fixedly connected to one end of the rotating shaft, the upper surface of the fixed plate is fixedly connected to a limiting plate, the middle part of the limiting plate is provided with a limiting groove, and a part of the rack is fixed in the limiting groove. When the first hydraulic cylinder pushes the sliding plate upward to drive the upper welding plate to move up, the gear at the end of the rotating shaft will rotate along the rack, thereby driving the upper welding plate to rotate. During the process of the upper welding plate moving up and rotating, it contacts the frosting plate for cleaning.

[0014] Preferably, the coating assembly includes a plurality of coating rollers rotatably arranged on the lower surface of a fixed box, a first cavity is opened in the fixed box, polytetrafluoroethylene coating is stored in the first cavity, and a release piece is arranged on the lower surface of the fixed box, and the release piece includes a plurality of fixed holes opened on the lower surface of the fixed box.

[0015] Preferably, the coating assembly also includes a connecting column that slides through the surface of the fixed box, a sealing plate is fixedly connected to the top end of the connecting column, the sealing plate is located inside the first cavity and is used to seal a plurality of fixed holes, and a cross plate is fixedly connected to the bottom end of the connecting column, two second springs are fixedly connected between the cross plate and the fixed box, and when the upper welding plate rotates to the top end, the cross plate is squeezed to push the cross plate up, and the upward movement of the cross plate pushes the sealing plate up, so that the polytetrafluoroethylene coating flows from the fixed hole to the coating roller, thereby coating the coating to the lower surface of the upper welding plate.

[0016] Preferably, a top block is fixedly connected to one end of the horizontal plate, and a pressure sensor is fixedly connected to the position of the fixed box corresponding to the top block. When the upper welding plate rotates to the top to push the horizontal plate, the top block on the horizontal plate will squeeze the pressure sensor.

[0017] Preferably, a plurality of connecting rods are fixedly connected to the lower surface of the fixed box, a coating roller is rotatably arranged between every two of the connecting rods, a first groove body is opened in the middle part of each of the connecting rods, a telescopic rod is fixedly connected in the first groove body, and a compression spring is sleeved on the circumferential surface of the telescopic rod to adapt to the squeezing of the coating roller by the upper welding plate.

[0018] A method for welding enameled wires of a wiring harness terminal is applied to an enameled wire welding device for a wiring harness terminal, specifically comprising:

[0019] Preparation stage: prepare welding equipment, enameled wire and required soldering materials;

[0020] Positioning and assembly: determine the welding position and assemble the welding head;

[0021] Welding operation: Place the enameled wire on the upper surface of the lower welding plate, start the first hydraulic cylinder to drive the lower welding plate downward, and the upper and lower welding plates will be energized. After the current is turned on, the high-temperature arc or resistance heat generated by the instantaneous short circuit of the positive and negative poles in the two welding plates is used to partially melt the welded material between the wire harness enameled wire and the contact surface of the two spot welding plates. After the power is turned off, the pressure is maintained so that the molten core is cooled and solidified under pressure to form a welding spot, thereby completing the welding;

[0022] Quality inspection: After welding is completed, check the quality of the welding points to ensure that the welding is firm and free of defects.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The enameled wire welding device and method for wiring harness terminals described in the present invention, in the process of driving the upper welding plate upward by the driving component, the upper welding plate is passively rotated, so that during the rotation, the lower surface of the upper welding plate that is not convenient for observation is automatically cleaned, and at the same time, after it rotates to the top, it triggers the coating component, and a layer of polytetrafluoroethylene coating is coated on the lower surface of the upper welding plate by the coating component, so that the upper welding plate can neatly weld the next wiring harness enameled wire, thereby achieving the effect of improving the welding quality.

[0025] 2. The enameled wire welding equipment and method for wiring harness terminals described in the present invention have a top block fixed to one end of a horizontal plate. When the upper welding plate lifts the horizontal plate, the top block will abut against the pressure sensor on the lower surface of the fixed box. At this time, the second hydraulic cylinder drives the cleaning assembly to move upward, thereby preventing the frosting plate from scraping off the protective coating on the surface of the upper welding plate during the resetting process of the upper welding plate. Then, the upper welding plate is completely lifted up regularly for cleaning and spraying of polytetrafluoroethylene coating, thereby extending the service life of the upper welding plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the limiting plate of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the rotating assembly of the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of the cleaning component of the present invention;

[0031] Figure 5 It is a schematic structural diagram of the frosted plate of the present invention;

[0032] Figure 6 is a schematic structural diagram of the coating assembly of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the connecting rod of the present invention;

[0034] Figure 8 It is a structural schematic diagram of the horizontal plate of the present invention;

[0035] Fig. 9 is a schematic structural diagram of the first cavity of the present invention;

[0036] In the figure: 1, spot welding machine body; 11, fixing frame; 12, fixing plate; 13, upper welding plate; 14, lower welding plate;

[0037] 2. First hydraulic cylinder; 21. Sliding plate; 22. Limiting column; 23. Rotating shaft; 24. Limiting plate; 25. Limiting groove; 26. Gear; 27. Rack;

[0038] 3. Fixed box; 31. Second hydraulic cylinder; 32. Connecting plate; 33. Fixed shaft; 34. Sanding plate; 35. First spring; 36. Top block; 37. Pressure sensor;

[0039] 4. Connecting rod; 41. First slot; 42. Compression spring; 43. Telescopic rod; 44. Coating roller; 45. Fixing hole; 46. First cavity; 47. Sealing plate; 48. Horizontal plate; 49. Connecting column; 410. Second spring. DETAILED DESCRIPTION

[0040] 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.

[0041] Embodiment 1: Figures 1 to 9 As shown, an enameled wire welding device for a wiring harness terminal described in an embodiment of the present invention includes a spot welding body 1, a fixing frame 11 is fixedly connected to one side of the spot welding body 1, a cleaning component is arranged on one side of the fixing frame 11, the cleaning component includes a frosting plate 34, the frosting plate 34 is used to clean the lower surface of the upper welding plate 13, a fixing plate 12 is fixedly connected to the position of the spot welding body 1 corresponding to the upper welding plate 13, and a lower welding plate 14 is fixedly connected to the upper surface of the fixing plate 12; a driving component is arranged on the upper surface of the fixing plate 12, and the driving component is used to drive the upper welding plate 13 to clean during the upward movement; a coating component is arranged on one side of the cleaning component, and the coating component is used to coat a layer of polytetrafluoroethylene coating on the lower surface of the upper welding plate 13 after cleaning, and the coated polytetrafluoroethylene coating is used to reduce the adhesion of welding slag on the surface of the upper welding plate 13.

[0042] Specifically, in the existing spot welding process of the wire bundle enameled wire, the temperature of the welding point will exceed the reasonable range due to the excessive current, thereby generating welding slag, which will adhere to the lower surface of the upper welding plate 13, but it is not easy to be observed, and the spot welding process is fast. After welding a bundle of enameled wires, the next bundle of enameled wires will be spot welded immediately, which will cause the welding slag remaining on the lower surface of the upper welding plate 13 to be welded to the surface of the bundle of enameled wires, resulting in the quality of the bundle of enameled wires being reduced. At the same time, if the spot welding machine is cleaned separately, it is necessary to stop the spot welding machine, allow the upper welding plate 13 to cool for a certain period of time, and then clean it. This process is slow, thereby affecting the production efficiency of enameled wire welding;

[0043] Therefore, the present invention solves this problem by setting a certain structure. First, the enameled wire in the form of a wire harness is placed on the lower welding plate 14. After being placed on the lower welding plate 14, the upper welding plate 13 is driven downward by starting the driving component to cooperate with the lower welding plate 14 to weld the enameled wire in the wire harness. After welding is completed, the driving component is driven again to drive the upper welding plate 13 to move upward. The upper welding plate 13 will rotate while moving upward. During the upward rotation of the upper welding plate 13, it will abut against the frosting plate 34, so that the frosting plate 34 can frost and clean the lower surface of the upper welding plate 13. The frosting layer of the frosting plate 34 is finer, so the welding slag on the lower surface of the upper welding plate 13 can be removed more stably. Then, when the upper welding plate 13 rotates 180 degrees, the coating component will be triggered, so that the coating component can be on the lower surface of the upper welding plate 13 A layer of polytetrafluoroethylene coating is coated on the surface. The polytetrafluoroethylene coating has extremely high wear resistance, high temperature resistance and corrosion resistance, and can effectively protect the welding head from high temperature, wear and corrosion. At the same time, the polytetrafluoroethylene coating also has good self-cleaning properties, which can reduce the adhesion of pollutants on the surface of the welding head and improve the welding quality. In the process of driving the upper welding plate 13 upward by the driving component, the upper welding plate 13 is passively rotated, so that during its rotation, the lower surface that is not convenient for observation is automatically cleaned. At the same time, after it rotates to the top, it will trigger the coating component, and a layer of polytetrafluoroethylene coating is coated on the lower surface of the upper welding plate 13 through the coating component, so that the upper welding plate 13 can neatly perform the welding of the next wiring harness enameled wire, thereby achieving the effect of improving the welding quality;

[0044] The problem that the welding slag remaining on the lower surface of the upper welding plate 13 will affect the welding quality of the enameled wire next time is solved, and the problem that the welding slag is not easily observed on the lower surface of the upper welding plate 13 is solved.

[0045] like Figure 2 As shown, the driving assembly of this embodiment includes a first hydraulic cylinder 2 fixedly connected to the upper surface of the fixed plate 12, the output end of the first hydraulic cylinder 2 is fixedly connected to a sliding plate 21, the upper surface of the fixed plate 12 is fixedly connected to two limit columns 22, the sliding plate 21 can slide up and down along the limit columns 22, the internal rotation of the sliding plate 21 is connected to a rotating shaft 23, the circumferential surface of the rotating shaft 23 is fixedly connected to the upper welding plate 13, and the rotating shaft 23 cooperates with the rotating assembly to drive the upper welding plate 13 to rotate.

[0046] Specifically, the driving component drives the sliding plate 21 to move up and down by starting the first hydraulic cylinder 2, thereby driving the upper welding plate 13 connected to one side of the sliding plate 21 to move up and down. The specific rotation of the upper welding plate 13 is achieved by cooperating with the rotating component to rotate upward 180 degrees during the rising process, and then move downward and rotate to reset, thereby achieving the effect of automatically contacting and cleaning with the frosting plate 34 during the upward movement.

[0047] like Figure 4 and Figure 5 As shown, in this embodiment, a fixed box 3 is fixedly connected to one side of the fixed frame 11, and the cleaning assembly also includes a second hydraulic cylinder 31 fixedly connected to one side of the fixed box 3, and the output end of the second hydraulic cylinder 31 is fixedly connected to a connecting plate 32, and the lower surface of the connecting plate 32 is fixedly connected to a fixed shaft 33, and the circumferential surface of the fixed shaft 33 is rotatably connected to a grinding plate 34, and two first springs 35 are fixedly connected between the grinding plate 34 and the connecting plate 32.

[0048] Specifically, by fixing the second hydraulic cylinder 31 on one side of the fixed box 3, when the upper welding plate 13 abuts against the first hydraulic cylinder 2, the frosting plate 34 will be squeezed, causing the frosting plate 34 to rotate to a certain extent. The rotation of the frosting plate 34 will squeeze the two first springs 35 on its upper surface. Through the two first springs 35, the frosting plate 34 can be close to the upper welding plate 13 that moves in an arc shape, thereby achieving a better cleaning effect.

[0049] like Figure 5 As shown, the two first springs 35 of this embodiment have different lengths. When the upper welding plate 13 abuts against the frosting plate 34, the two first springs 35 can better fit the movement trajectory of the upper welding plate 13, so that the frosting plate 34 can achieve a tighter cleaning effect, and at the same time, the frosting plate 34 can automatically reset.

[0050] Specifically, when the upper welding plate 13 rotates under the cooperation of the driving assembly and the rotating assembly, its motion trajectory is an arc, so the upper welding plate 13 will first contact one end of the longer first spring 35, causing the grinding plate 34 to rotate, squeezing the first spring 35 at the longer end and stretching the spring at the shorter end, as shown in the attached Figure 5 As shown, when it is then rotated to completely fit with the grinding plate 34, the elastic pressure of the two springs enables the grinding plate 34 to abut against the upper welding plate 13 more closely, thereby achieving a better cleaning effect.

[0051] like Figure 3 As shown, the rotating assembly of this embodiment includes a gear 26 fixedly connected to one end of the rotating shaft 23, the upper surface of the fixed plate 12 is fixedly connected to the limiting plate 24, the middle part of the limiting plate 24 is provided with a limiting groove 25, and a part of the rack 27 is fixed in the limiting groove 25. When the first hydraulic cylinder 2 pushes the sliding plate 21 upward to drive the upper welding plate 13 to move upward, the gear 26 at the end of the rotating shaft 23 will rotate along the rack 27, thereby driving the upper welding plate 13 to rotate. During the process of moving up and rotating, the upper welding plate 13 contacts the frosting plate 34 for cleaning.

[0052] Specifically, when the first hydraulic cylinder 2 drives the sliding block to move upward, the gear 26 at one end of the rotating shaft 23 will rotate along the rack 27 inside the fixed plate 12, thereby driving the upper welding plate 13 on the circumferential surface of the rotating shaft 23 to rotate, and then it can be cleaned by the cleaning component and sprayed by the spray component at the same time.

[0053] Embodiment 2: Figures 1 to 9 As shown, comparative example 1, another embodiment of the present invention is: the coating assembly includes a plurality of coating rollers 44 rotatably arranged on the lower surface of the fixed box 3, a first cavity 46 is opened in the fixed box 3, polytetrafluoroethylene coating is stored in the first cavity 46, and a release piece is arranged on the lower surface of the fixed box 3, and the release piece includes a plurality of fixed holes 45 opened on the lower surface of the fixed box 3.

[0054] Specifically, when the upper welding plate 13 rotates 180 degrees and rotates to the top, it will squeeze the release piece on the lower surface of the fixed box 3, so that the fixed box 3 releases the polytetrafluoroethylene coating inside, and the polytetrafluoroethylene coating drips onto the circumferential surface of the coating roller 44, and then rotates with the coating roller 44 during the resetting process, so as to apply the polytetrafluoroethylene coating, thereby achieving the effect of automatically releasing the coating, and the polytetrafluoroethylene coating will only be released after the upper welding plate 13 squeezes the release piece, thereby achieving the effect of automatically controlling the discharge of the coating, and at the same time, after the upper welding plate 13 rotates downward to reset, the two second springs 410 will also drive the cross plate 48 to reset, thereby sealing the fixed hole 45 again through the sealing plate 47, saving coating to a certain extent.

[0055] like Figure 8 and Fig. 9 As shown, the coating assembly of this embodiment also includes a connecting column 49 that slides through the surface of the fixed box 3. A sealing plate 47 is fixedly connected to the top end of the connecting column 49. The sealing plate 47 is located inside the first cavity 46 and is used to block a number of fixed holes 45. A cross plate 48 is fixedly connected to the bottom end of the connecting column 49. Two second springs 410 are fixedly connected between the cross plate 48 and the fixed box 3. When the upper welding plate 13 rotates to the top, the cross plate 48 is squeezed to push the cross plate 48 upward. The upward movement of the cross plate 48 pushes the sealing plate 47 upward, so that the polytetrafluoroethylene coating flows from the fixed hole 45 to the coating roller 44, thereby coating the coating to the lower surface of the upper welding plate 13.

[0056] Specifically, when the upper welding plate 13 rotates to abut against the cross plate 48, the cross plate 48 is squeezed to move upward, thereby pushing the connecting column 49 to lift the sealing plate 47 upward, and then the polytetrafluoroethylene coating in the fixed box 3 will flow out of the fixed hole 45, thereby automatically unloading, and then the upper welding plate 13 continues to rotate and rotates relative to the coating roller 44, thereby achieving an automatic coating effect. During the existing upward movement of the upper welding plate 13, the protective material is automatically coated on its lower surface, thereby achieving a more convenient effect.

[0057] like Figure 6 and Fig. 9As shown, in this embodiment, a top block 36 is fixedly connected to one end of the horizontal plate 48, and a pressure sensor 37 is fixedly connected to the position of the fixed box 3 corresponding to the top block 36. When the upper welding plate 13 rotates to the top end to push the horizontal plate 48, the top block 36 on the horizontal plate 48 will squeeze the pressure sensor 37.

[0058] Specifically, by fixing a top block 36 at one end of the cross plate 48, when the upper welding plate 13 lifts the cross plate 48, the top block 36 will abut against the pressure sensor 37 on the lower surface of the fixed box 3. At this time, the second hydraulic cylinder 31 drives the cleaning assembly to move upward, thereby preventing the frosting plate 34 from scraping off the protective coating on the surface of the upper welding plate 13 during the resetting process of the upper welding plate 13. Then, the upper welding plate 13 is completely lifted up regularly for cleaning and spraying of polytetrafluoroethylene coating, thereby extending the service life of the upper welding plate 13.

[0059] like Figure 7 As shown, a plurality of connecting rods 4 are fixedly connected to the lower surface of the fixed box 3 of this embodiment, a coating roller 44 is rotatably arranged between every two connecting rods 4, a first groove body 41 is opened in the middle part of each connecting rod 4, a telescopic rod 43 is fixedly connected in the first groove body 41, and a compression spring 42 is sleeved on the circumferential surface of the telescopic rod 43 for adapting to the squeezing of the coating roller by the upper welding plate 13.

[0060] Specifically, a plurality of connecting rods 4 are fixedly connected to the lower surface of the fixed box 3, and then a coating roller 44 is set up between every two connecting rods 4 through a telescopic rod 43 and a compression spring 42 to slide up and down. Figure 7 As shown, the upper welding plate 13 pushes the coating roller 44 upward, thereby pushing the cross plate 48 upward, so that the coating roller 44 can adapt to the upward movement trajectory of the upper welding plate 13, and the paint can flow onto the coating roller 44 more quickly, and the lower surface of the upper welding plate 13 is quickly coated by the coating roller 44.

[0061] A method for welding enameled wires of a wiring harness terminal is applied to an enameled wire welding device for a wiring harness terminal, specifically comprising:

[0062] Preparation stage: prepare welding equipment, enameled wire and required soldering materials;

[0063] Positioning and assembly: determine the welding position and assemble the welding head;

[0064] Welding operation: Place the enameled wire on the upper surface of the lower welding plate 14, start the first hydraulic cylinder 2 to drive the lower welding plate 14 to move downward, and the upper welding plate 13 and the lower welding plate 14 will be energized. After the current is turned on, the high-temperature arc or resistance heat generated when the positive and negative poles in the two welding plates are short-circuited instantly is used to partially melt the welding material between the wire harness enameled wire and the contact surface of the two spot welding plates. After the power is turned off, the pressure is maintained so that the molten core is cooled and solidified under pressure to form a welding spot, thereby completing the welding;

[0065] Quality inspection: After welding is completed, check the quality of the welding points to ensure that the welding is firm and without defects

[0066] Working principle: first, place the enameled wire in the form of a wire harness on the lower welding plate 14. After placing it on the lower welding plate 14, the driving component starts the first hydraulic cylinder 2 to drive the sliding plate 21 to move up and down, thereby driving the upper welding plate 13 connected to one side of the sliding plate 21 to move up and down to weld the enameled wire harness. After welding, the driving component is driven again to drive the upper welding plate 13 to move up. During the process of the first hydraulic cylinder 2 driving the sliding block to move upward, the gear 26 at one end of the rotating shaft 23 will move along the inner part of the fixed plate 12. The rack 27 can be rotated by 90 degrees to the level of the operator's sight, so as to observe the lower surface of the upper welding plate 13. If there is welding slag, the sliding block will continue to drive the upper welding plate 13 on the circumferential surface of the rotating shaft 23 to rotate. During the upward rotation of the upper welding plate 13, it will abut against the grinding plate 34, so that the lower surface of the upper welding plate 13 is ground and cleaned by the grinding plate 34. The grinding layer of the grinding plate 34 is fine, so the welding slag on the lower surface of the upper welding plate 13 can be removed more stably without causing rough scratches.

[0067] Then, when the upper welding plate 13 rotates 180 degrees and rotates to the top, the upper welding plate 13 abuts against the horizontal plate 48 to squeeze the horizontal plate 48 to move upward, thereby pushing the connecting column 49 to lift the sealing plate 47 upward, and then the polytetrafluoroethylene coating in the fixed box 3 will flow out of the fixed hole 45, thereby automatically unloading, and the polytetrafluoroethylene coating drips onto the circumferential surface of the coating roller 44, and then rotates with the coating roller 44 during the reset process, thereby coating the polytetrafluoroethylene coating, achieving the effect of automatically releasing the coating, and the polytetrafluoroethylene coating will only be released after the upper welding plate 13 squeezes the release part, achieving the effect of automatically controlling the unloading of the coating, and at the same time, after the upper welding plate 13 rotates downward to reset, the two second springs 410 will also drive the horizontal plate 48 to reset, thereby sealing the fixed hole 45 again through the sealing plate 47, saving coating to a certain extent;

[0068] Thereby, the coating component can coat a layer of polytetrafluoroethylene coating on the lower surface of the upper welding plate 13. The polytetrafluoroethylene coating has extremely high wear resistance, high temperature resistance and corrosion resistance, and can effectively protect the welding head from high temperature, wear and corrosion. At the same time, the polytetrafluoroethylene coating also has good self-cleaning properties, which can reduce the adhesion of pollutants on the surface of the welding head and improve the welding quality. In the process of driving the upper welding plate 13 upward by the driving component, the upper welding plate 13 is passively rotated, so that during its rotation, the lower surface that is not convenient for observation is automatically cleaned, and at the same time, after it rotates to the top, it will trigger the coating component, and a layer of polytetrafluoroethylene coating will be coated on the lower surface of the upper welding plate 13 through the coating component, so that the upper welding plate 13 can neatly carry out the welding of the next wiring harness enameled wire, thereby achieving the effect of improving the welding quality.

[0069] 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. An enameled wire welding device for a wiring harness terminal, comprising a spot welding machine body (1), a fixing frame (11) being fixedly connected to one side of the spot welding machine body (1), characterized in that: A cleaning component is provided on one side of the fixing frame (11), the cleaning component comprising a grinding plate (34), the grinding plate (34) being used to clean the lower surface of the upper welding plate (13); a fixing plate (12) is fixedly connected to a position of the spot welding machine body (1) corresponding to the upper welding plate (13), and a lower welding plate (14) is fixedly connected to the upper surface of the fixing plate (12); A driving assembly is provided on the upper surface of the fixing plate (12), and the driving assembly is used to drive the upper welding plate (13) to be cleaned during the upward movement; A coating component is provided on one side of the cleaning component, and the coating component is used to coat a layer of polytetrafluoroethylene coating on the lower surface of the upper welding plate (13) after cleaning, and the coated polytetrafluoroethylene coating is used to reduce the adhesion of welding slag on the surface of the upper welding plate (13); The driving assembly comprises a first hydraulic cylinder (2) fixedly connected to the upper surface of a fixed plate (12); a sliding plate (21) is fixedly connected to the output end of the first hydraulic cylinder (2); two limit columns (22) are fixedly connected to the upper surface of the fixed plate (12); the sliding plate (21) can slide up and down along the limit columns (22); a rotating shaft (23) is rotatably connected inside the sliding plate (21); the circumferential surface of the rotating shaft (23) is fixedly connected to the upper welding plate (13); the rotating shaft (23) cooperates with the rotating assembly to drive the upper welding plate (13) to rotate; The rotating assembly comprises a gear (26) fixedly connected to one end of the rotating shaft (23); the upper surface of the fixed plate (12) is fixedly connected to a limiting plate (24); a limiting groove (25) is provided in the middle of the limiting plate (24); a portion of a rack (27) is fixedly connected in the limiting groove (25); when the first hydraulic cylinder (2) pushes the sliding plate (21) upward to drive the upper welding plate (13) to move upward, the gear (26) at the end of the rotating shaft (23) rotates along the rack (27), thereby driving the upper welding plate (13) to rotate; during the process of the upper welding plate (13) moving upward and rotating, it contacts the grinding plate (34) for cleaning.

2. The enameled wire welding device for wiring harness terminals according to claim 1, characterized in that: A fixed box (3) is fixedly connected to one side of the fixed frame (11), and the cleaning assembly further comprises a second hydraulic cylinder (31) fixedly connected to one side of the fixed box (3), an output end of the second hydraulic cylinder (31) is fixedly connected to a connecting plate (32), a fixed shaft (33) is fixedly connected to the lower surface of the connecting plate (32), a grinding plate (34) is rotatably connected to the circumferential surface of the fixed shaft (33), and two first springs (35) are fixedly connected between the grinding plate (34) and the connecting plate (32).

3. The enameled wire welding device for wiring harness terminals according to claim 2, characterized in that: The two first springs (35) have different lengths, and when the upper welding plate (13) abuts against the grinding plate (34), the two first springs (35) can better fit the movement trajectory of the upper welding plate (13), so that the grinding plate (34) can achieve a tighter cleaning effect, and at the same time, the grinding plate (34) can automatically reset.

4. The enameled wire welding device for wiring harness terminals according to claim 1, characterized in that: The coating assembly comprises a plurality of coating rollers (44) rotatably arranged on the lower surface of a fixed box (3); a first cavity (46) is provided in the fixed box (3); polytetrafluoroethylene coating is stored in the first cavity (46); a release member is provided on the lower surface of the fixed box (3); the release member comprises a plurality of fixing holes (45) provided on the lower surface of the fixed box (3).

5. The enameled wire welding device for wiring harness terminals according to claim 4, characterized in that: The coating assembly further comprises a connecting column (49) which slides through the surface of the fixed box (3), a sealing plate (47) being fixedly connected to the top end of the connecting column (49), the sealing plate (47) being located inside the first cavity (46) and being used to block a plurality of fixed holes (45), a transverse plate (48) being fixedly connected to the bottom end of the connecting column (49), two second springs (410) being fixedly connected between the transverse plate (48) and the fixed box (3), and when the upper welding plate (13) rotates to the top end, the transverse plate (48) is squeezed to push the transverse plate (48) upward, and the upward movement of the transverse plate (48) pushes the sealing plate (47) upward, so that the polytetrafluoroethylene coating flows from the fixed holes (45) to the coating roller (44), thereby coating the coating to the lower surface of the upper welding plate (13).

6. The enameled wire welding device for wiring harness terminals according to claim 5, characterized in that: A top block (36) is fixedly connected to one end of the transverse plate (48), and a pressure sensor (37) is fixedly connected to a position of the fixed box (3) corresponding to the top block (36). When the upper welding plate (13) rotates to the top to push the transverse plate (48), the top block (36) on the transverse plate (48) will squeeze the pressure sensor (37).

7. The enameled wire welding device for wiring harness terminals according to claim 5, characterized in that: A plurality of connecting rods (4) are fixedly connected to the lower surface of the fixed box (3), a coating roller (44) is rotatably arranged between every two of the connecting rods (4), a first groove (41) is opened in the middle of each of the connecting rods (4), a telescopic rod (43) is fixedly connected in the first groove (41), and a compression spring (42) is sleeved on the circumferential surface of the telescopic rod (43) for adapting to the squeezing of the coating roller by the upper welding plate (13).

8. A method for welding enameled wires of wiring harness terminals, applied to an enameled wire welding device for wiring harness terminals according to any one of claims 1 to 7, characterized in that: Specifically include: Preparation stage: prepare welding equipment, enameled wire and required soldering materials; Positioning and assembly: determine the welding position and assemble the welding head; Welding operation: placing the enameled wire on the upper surface of the lower welding plate (14), starting the first hydraulic cylinder (2) to drive the lower welding plate (14) to move downward, and the upper welding plate (13) and the lower welding plate (14) will be energized. After the current is turned on, the high-temperature arc or resistance heat generated when the positive and negative poles in the two welding plates are short-circuited instantly is used to partially melt the welding material between the wire harness enameled wire and the contact surface of the two spot welding plates. After the power is turned off, the pressure is maintained so that the molten core is cooled and solidified under pressure to form a welding spot, thereby completing the welding; Quality inspection: After welding is completed, check the quality of the welding points to ensure that the welding is firm and free of defects.

Images