A spraying device

Abstract

The invention discloses a novel nozzle and its accessories, and a spraying device, which comprises a device nozzle, wherein two conductive nozzles are penetrated on one side of the device nozzle, a metal wire for spraying is penetrated inside the conductive nozzle, a guide wire accessory is threadedly connected to one end of the conductive nozzle, the guide wire accessory has conductivity, a guide wire tube is threadedly connected to one end of the guide wire accessory, a wire-gripping accessory is glued to the other end of the guide wire tube, a pressure sensor is arranged inside the wire-gripping accessory, a second pulley is sleeved on the outer side of the wire-gripping accessory, a V-belt is sleeved on the outer side of the second pulley, a first pulley is arranged on one side of the V-belt, a telescopic rod is penetrated in the center of the first pulley, a pneumatic part is fixedly connected to one end of the telescopic rod, a screw is sleeved on the outer side of the pneumatic part, and a control element is arranged between the pneumatic part and the screw. The device solves the problems of high failure rate and short spraying time of current arc spraying.

Description

Technical Field

[0001] The invention belongs to the technical field of arc spraying, and in particular relates to a spraying device. Background Art

[0002] Arc spraying is a thermal spraying process that uses an electric arc as a heat source to atomize the melted metal wire for spraying with a high-speed airflow and spray it onto the surface of the workpiece at high speed to form a coating. Its working principle is that during spraying, two wire-shaped metal materials are fed into the two conductive nozzles of the arc spray gun evenly and continuously through the wire feeding device on the spray gun through the wire feeding wheel. The conductive nozzles are connected to the positive and negative poles of the power supply respectively, and the two metal wires for spraying are insulated before they come into contact. When the ends of the two metal wires for spraying come into contact with each other, a short circuit is generated to form an arc, and the ends of the metal wires for spraying melt instantly. At this time, compressed air is used to atomize the melted metal wire for spraying to form metal micro-droplets, which are sprayed onto the surface of the workpiece at a very high speed to produce a metal coating.

[0003] The existing arc spraying devices have the disadvantages of poor wire feeding and poor conductivity, which will cause the arc spraying device to have a high failure rate and short spraying time. At the same time, it will increase the consumption of welding wire and make it difficult to maintain the device for long-term spraying operation. This not only increases the investment cost, but also greatly reduces the work efficiency. This phenomenon has become a problem that needs to be urgently solved by people in this field. Summary of the invention

[0004] The purpose of the present invention is to provide a spraying device for existing devices to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a spraying device, comprising a device nozzle, two conductive nozzles are penetrated on one side of the device nozzle, a metal wire for spraying is penetrated inside each of the conductive nozzles, one end of each of the conductive nozzles is threadedly connected with a wire guide fitting, the wire guide fitting is conductive, one end of each of the wire guide fittings is threadedly connected with a wire guide tube, the other end of the wire guide tube is glued with a wire pulling fitting, the wire threading hole of the wire pulling fitting is a long straight hole, and the wire threading hole has a length exceeding a threshold value, a pressure sensor is embedded and installed on the inner surface of the wire threading hole, the pressure receiving surface of the pressure sensor is a cylindrical surface and is flush with the inner wall of the wire threading hole, and the pressure receiving surface of the pressure sensor occupies at least 1 / 3-1 / 2 of the length of the wire threading hole along the length direction of the wire threading hole, and the wire pulling fitting is arranged on one side along the direction of the wire threading hole. There is a first bracket, a fixing plate is welded below the first bracket, a second bracket is arranged on one side of the wire-pulling accessory, and the second bracket is also welded on the fixing plate, including but not limited to connecting the wire-pulling accessory to the center of the second pulley through a key connection, the two second pulleys are connected by a V-belt, the V-belt is sleeved on the outside of each second pulley, and a first pulley is further arranged between the two second pulleys, the V-belt is also sleeved on the outside of the first pulley, the first pulley is a driving pulley, a telescopic rod is passed through the center of the first pulley, one end of the telescopic rod is fixedly connected to a pneumatic part, a screw is sleeved on the outside of the pneumatic part, a control element is arranged between the pneumatic part and the screw, a first transmission shaft is passed through the inside of the screw, the other end of the first transmission shaft is connected to a motor, and the other end of the first transmission shaft is sleeved on a limited shaft cover;

[0006] Support members are provided on both sides of the first pulley, and both ends of the support members are close to one side of the second pulley. A sliding member is inserted below the support member, and the sliding member is slidably connected to a slide rail, and the lower side of the slide rail is glued to the fixed plate;

[0007] One side of the screw rod is meshedly connected with a first gear, a second transmission shaft is passed through the center of the first gear, both ends of the second transmission shaft are connected to second gears, one side of the second gear is glued with a first wire feeding wheel, one side of the second gear is meshedly connected with a third gear, one side of the third gear is glued with a second wire feeding wheel, a third transmission shaft is passed through the centers of the second wire feeding wheel and the third gear, and a metal wire for spraying is provided between the first wire feeding wheel and the second wire feeding wheel.

[0008] The present invention further describes that a fourth rolling groove is opened in the center of one side of the support member, and third rolling grooves are opened at both ends of the support member on the same side, and balls are arranged inside the fourth rolling groove and the third rolling groove.

[0009] The present invention further describes that second rolling grooves are provided on both sides of the second pulley, the second rolling groove and the third rolling groove are opposite to and adapted to form a first closed track, a conical sleeve hole is provided in the center of the second pulley, a belt groove is provided on the outer side of the second pulley, first rolling grooves are provided on both sides of the first pulley, the first rolling groove and the fourth rolling groove are opposite to and adapted to form a second closed track.

[0010] The present invention further describes that a sliding part is inserted under the support part, and a tapered hole is opened at one end of the circular through hole in the center of the wire-feeding accessory close to the first wire feeding wheel and the second wire feeding wheel. The tapered hole facilitates the metal wire for spraying to enter the wire-feeding accessory more easily.

[0011] The present invention further states that the length of the slide rail is greater than the sum of the thicknesses of the thread-stroking accessory, the first pulley and the two support members.

[0012] The present invention further describes that a motor sleeve is sleeved on the outer side of the motor, and the motor sleeve is glued to one side of the fixing plate.

[0013] The present invention further illustrates that the device nozzle is fixedly connected to the spray gun housing, gear buckle covers are provided on both sides of the spray gun housing, a wire feeding inlet is provided on one side of the gear buckle cover, a handle is provided at the bottom of the spray gun housing, a switch is provided on one side of the handle, and the fixing plate is fixedly installed in the spray gun housing, and a high-pressure air inlet is provided on one side of the device nozzle.

[0014] The present invention further describes that one end of the telescopic rod is fixedly connected to a limit cover.

[0015] The present invention further illustrates that one end of the third transmission shaft is inserted into a transmission shaft frame, and the transmission shaft frame is plugged into the fixing plate.

[0016] The present invention further illustrates that the control element is electrically connected to the pressure sensor, the control element is electrically connected to the pneumatic part, and the control element further includes the following operating steps:

[0017] When the pressure value received by the pressure sensor is set to a in the control element, the wire-smoothing accessory has the best smoothing effect on the metal wire material for spraying, and the pressure value actually received by the pressure sensor is set to b;

[0018] When a is smaller than b, the control element controls the pneumatic member to push the telescopic rod outward until a is equal to b;

[0019] When a is equal to b, the control element controls the pneumatic part to not do work;

[0020] When a is greater than b, the control element controls the pneumatic member to pull the telescopic rod inward until a is equal to b.

[0021] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0022] By providing a guide wire accessory with a conductive function and threading it on the conductive nozzle, it is beneficial to increase the conductive performance of the metal wire used for spraying, reduce the failure rate during the spraying process, and thus extend the time of the spraying operation;

[0023] The coordination of the wire-smoothing accessories with the pulley mechanism, the control element and the pneumatic parts is beneficial to smooth the metal wire for spraying, ensure the shape performance and the stability of the transmission of the metal wire for spraying, and thus reduce the failure rate of the device caused by the instability of the metal wire for spraying itself or in the transmission process;

[0024] The provision of an electric motor to drive the worm gear mechanism to rotate, and the wire feeding wheel to rotate through force transmission and gear meshing, is beneficial to the transmission of metal wire for spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 is a schematic diagram of an internal transmission mechanism of an embodiment of the present invention;

[0027] Figure 2 is a schematic diagram of a gear transmission mechanism of an embodiment of the present invention;

[0028] Figure 3 is a rear cross-sectional view of a screw portion of an embodiment of the present invention;

[0029] Figure 4 is an enlarged schematic diagram of region A of an embodiment of the present invention;

[0030] Figure 5 is an enlarged schematic diagram of region B of an embodiment of the present invention;

[0031] Figure 6 is an enlarged schematic diagram of region C of an embodiment of the present invention;

[0032] Figure 7 is a cross-sectional view of a guide wire accessory according to an embodiment of the present invention;

[0033] Figure 8 is a schematic structural diagram of a first pulley in an embodiment of the present invention;

[0034] Fig. 9is a schematic structural diagram of a second pulley in an embodiment of the present invention;

[0035] Fig.10 is a schematic structural diagram of a support member according to an embodiment of the present invention;

[0036] Fig.11 is a cross-sectional view of a nozzle portion of a device according to an embodiment of the present invention;

[0037] Fig.12 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0038] Fig.13 It is a partial schematic diagram of the connection of the caressing wire accessory of the present invention;

[0039] In the figure: 1. device nozzle; 2. conductive nozzle; 3. wire guide accessories; 4. wire guide tube; 5. wire caressing accessories; 51. pressure sensor; 52. first bracket; 53. second bracket; 6. second pulley; 61. second rolling groove; 62. conical sleeve hole; 63. belt groove; 7. V-belt; 8. support member; 81. sliding member; 82. slide rail; 83. third rolling groove; 84. fourth rolling groove; 9. first pulley; 91. first rolling groove; 10. ball bearing; 11. metal wire for spraying; 12. first transmission shaft; 12 1. Limiting shaft cover; 13. Electric motor; 131. Motor sleeve; 14. Screw; 15. First gear; 16. Second transmission shaft; 17. Second gear; 18. First wire feeding wheel; 19. Third gear; 20. Second wire feeding wheel; 21. Third transmission shaft; 211. Transmission shaft frame; 22. Fixed plate; 23. Pneumatic parts; 231. Control element; 24. Telescopic rod; 25. Limiting cover; 26. Spray gun housing; 27. Switch; 28. Handle; 29. ​​Gear buckle cover; 291. Wire feeding inlet; 30. High-pressure air inlet. DETAILED DESCRIPTION

[0040] The following is a further non-limiting detailed description of the technical solution of the present invention in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The embodiment of the present invention provides a technical solution: a spraying device, Figure 1 Schematic diagram of the internal transmission mechanism of an embodiment of the present invention, as shown in Figure 1 and Fig.11As shown, the spraying device comprises a device nozzle 1, two conductive nozzles 2 are provided on one side of the device nozzle 1, a metal wire 11 for spraying is provided inside each of the conductive nozzles 2, and a guide wire accessory 3 is threadedly connected to one end of each of the conductive nozzles 2, and the guide wire accessory 3 is conductive. The device nozzle 1 and the guide wire accessory 3 are connected to form a new type of nozzle and accessory of the device, and the guide wire accessory 3 is conducive to increasing the conductive performance of the metal wire 11 for spraying, reducing the failure rate during the spraying process, and thus prolonging the time of the spraying operation. The two conductive nozzles 2 are respectively connected to the positive and negative poles of the power supply, so that the metal wire 11 for spraying is short-circuited by contacting each other through the conductive nozzles 2 to form an arc so that the end melts instantly.

[0042] like Figure 1 As shown, one end of each guide wire accessory 3 is threadedly connected to a guide wire tube 4, and the other end of the guide wire tube 4 is glued to a wire fitting 5. Figure 5 As shown, the wire-stroking accessory 5 has a wire threading hole inside, which is used to pass the metal wire 11 for spraying and straighten it, ensuring the performance of the metal wire 11 for spraying and the stability of transmission, thereby reducing the failure rate of the device caused by instability of the metal wire 11 for spraying itself or during transmission.

[0043] like Fig.13 As shown, a first bracket 52 is provided on one side of the wire-pulling accessory 5 in the direction of the wire-threading hole, a fixing plate 22 is welded below the first bracket 52, and a second bracket 53 is provided on the other side of the wire-pulling accessory 5 in the direction of the wire-threading hole, and the second bracket 53 is also welded on the fixing plate 22. The first bracket 52 and the second bracket 53 are respectively used to support the wire-pulling accessory 5 below the two ends near the wire-threading hole to fix the wire-pulling accessory 5.

[0044] like Figure 5 As shown, the threading hole of the threading accessory 5 is a long straight hole, and the threading hole runs through the entire length of the threading accessory 5 to ensure the threading effect. The diameter of the threading hole is slightly larger than the metal wire 11 for spraying to ensure that the metal wire 11 for spraying can move relative to the threading hole and have a threading effect.

[0045] A pressure sensor 51 is embedded and installed on the inner surface of the threading hole, and the pressure receiving surface of the pressure sensor 51 is a cylindrical surface and is flush with the inner wall of the threading hole. When the metal wire 11 for spraying is located in the threading hole, the pressure sensor 51 is used to sense the pressure between the wire caressing accessory 5 and the metal wire 11 for spraying, and the pressure receiving surface of the pressure sensor 51 occupies at least 1 / 3-1 / 2 of the length of the threading hole along the length direction of the threading hole to obtain a uniform and reliable pressure value.

[0046] like Figure 1 and Figure 5 As shown, the outer side of each of the thread-pulling accessories 5 is sleeved with a second pulley 6, including but not limited to connecting the thread-pulling accessories 5 to the center of the second pulley 6 through a key connection. The two second pulleys 6 are connected by a V-belt 7, which is sleeved on the outside of each second pulley 6, and a first pulley 9 is also provided between the two second pulleys 6, and the V-belt 7 is also sleeved on the outside of the first pulley 9. The first pulley 9 is a driving wheel, and the second pulleys 6 and the thread-pulling accessories 5 on both sides thereof are driven to rotate through the transmission of the V-belt 7. The transmission of the V-belt 7 cooperates with the first bracket 52 and the second bracket 53 to ensure that the thread-pulling accessories 5 can rotate with the second pulley 6 to pull the thread, but does not move forward and backward.

[0047] Specifically, in this embodiment, if Figure 3 As shown, a telescopic rod 24 is provided in the center of the first pulley 9, one end of the telescopic rod 24 is fixedly connected to a pneumatic part 23, a screw 14 is sleeved on the outside of the pneumatic part 23, a control element 231 is provided between the pneumatic part 23 and the screw 14, a first transmission shaft 12 is provided inside the screw 14, one end of the first transmission shaft 12 is connected to a motor 13, and the other end of the first transmission shaft 12 is sleeved with a limit shaft cover 121. The motor 13 drives the telescopic rod 24 to rotate through the first transmission shaft 12 and the screw 14, causing the first pulley 9 fixed on the telescopic rod 24 to rotate, and the first pulley 9 drives the second pulley 6 to rotate through the V-belt 7, so as to achieve a stable dispersion of the torque on the first pulley 9.

[0048] like Figure 1 As shown, support members 8 are provided on both sides of the first pulley 9, and the two ends of the support member 8 are close to one side of the second pulley 6. A sliding member 81 is inserted below the support member 8. The sliding member 81 is slidably connected to a slide rail 82, and the lower end of the slide rail 82 is glued to the fixed plate 22. The slide rail 82 is conducive to the support member 8 to limit the position of the sliding member 81 when it moves. The control element 231 receives the force between the wire-holding accessory 5 and the metal wire material 11 for spraying sensed by the pressure sensor 51, controls the pneumatic member 23 to drive the telescopic rod 24 to move, and the telescopic rod 24 drives the first pulley 9 to move forward and backward. Figure 3As shown, since one of the support members 8 is limited by the first pulley 9 and the limiting shaft cover 121 on both sides, and the other support member 8 is limited by the first pulley 9 and the shaft diameter difference of the first transmission shaft 12 on both sides, and the two ends of the two support members 8 are respectively close to the two sides of the two second pulleys 6, the movement of the first pulley 9 causes the two support members 8 to move accordingly, and at the same time, the second pulley 6 between the two support members 8 also moves back and forth accordingly, so that the optimal wire-smoothing pressure is continuously maintained inside the wire-smoothing accessory 5, and the wire-smoothing effect is stably exerted.

[0049] In an embodiment of the present invention, the wire-stroking accessory 5 is made of a hard material with a certain elasticity such as rubber or plastic, and can squeeze the wire threading hole as the relative position between the wire-stroking accessory 5 and the second pulley 6 changes, thereby applying different pressures to the metal wire 11 for spraying inside it.

[0050] like Figure 2 As shown, one side of the screw rod 14 is meshedly connected with a first gear 15, a second transmission shaft 16 is passed through the center of the first gear 15, and second gears 17 are connected to both ends of the second transmission shaft 16. A first wire feeding wheel 18 is glued to one side of the second gear 17, and a third gear 19 is meshedly connected to one side of the second gear 17. A second wire feeding wheel 20 is glued to one side of the third gear 19, and a third transmission shaft 21 is passed through the center of the second wire feeding wheel 20 and the third gear 19, and a metal wire material 11 for spraying is arranged between the first wire feeding wheel 18 and the second wire feeding wheel 20. When the second gear 17 rotates and meshes with the third gear 19, it drives the glued first wire feeding wheel 18 and the second wire feeding wheel 20 to rotate in opposite directions, thereby pushing the metal wire material 11 for spraying forward, which is conducive to the transmission of the metal wire material 11 for spraying.

[0051] In certain preferred embodiments, Fig.10 As shown, a fourth rolling groove 84 is provided in the center of one side of the support member 8 , and third rolling grooves 83 are provided at both ends of the support member 8 on the same side. Balls 10 are provided inside the fourth rolling groove 84 and the third rolling groove 83 .

[0052] In certain preferred embodiments, Fig. 9As shown, the second pulley 6 is provided with a second rolling groove 61 on both sides, and the second rolling groove 61 and the third rolling groove 83 are opposite and adapted to form a first closed track, and the ball 10 rotates in the first closed track, thereby ensuring the good rotation of the second pulley 6. The center of the second pulley 6 is provided with a tapered sleeve hole 62, and the tapered sleeve hole 62 is used to pass the thread caressing accessory 5 therein, and the outer side of the second pulley 6 is provided with a belt groove 63, and the belt groove 63 is used to match and fix the V-belt 7 with the second pulley 6.

[0053] In certain preferred embodiments, Figure 8 As shown, first rolling grooves 91 are provided on both sides of the first pulley 9. The first rolling grooves 91 are opposite to the fourth rolling grooves 84 and are adapted to form a second closed track, which is beneficial for the ball 10 to rotate in the second closed track, thereby ensuring the good rotation of the first pulley 9.

[0054] In certain preferred embodiments, Figure 1 and Fig.12 As shown, one end of the third transmission shaft 21 is inserted into a transmission shaft frame 211 , and the transmission shaft frame 211 is plugged into the fixing plate 22 .

[0055] In certain preferred embodiments, Fig.11 As shown, a high-pressure air inlet 30 is provided on one side of the nozzle 1 of the device.

[0056] In certain preferred embodiments, Figure 3 As shown, one end of the telescopic rod 24 is fixedly connected to a limiting cover 25 , and the limiting cover 25 is helpful to limit the position of the telescopic rod 24 .

[0057] In the above embodiment, the control element 231 is electrically connected to the pressure sensor 51 , and the control element 231 is electrically connected to the pneumatic part 23 .

[0058] In some preferred embodiments, the structures of the second pulley 6 and the wire-smoothing accessory 5 adopt the principle of conical tight connection, and the different positions of the second pulley 6 on the wire-smoothing accessory 5 will affect the wire-smoothing pressure of the wire-smoothing accessory 5 on the metal wire material 11 for spraying, and the change of the wire-smoothing pressure will affect the wire-smoothing effect. The control element 231 also includes the following operation steps: when the pressure value received by the pressure sensor 51 is set to a in the control element 231, the wire-smoothing effect of the wire-smoothing accessory 5 on the metal wire material 11 for spraying is the best, and the pressure value actually received by the pressure sensor 51 is set to b;

[0059] When a is smaller than b, the control element 231 controls the pneumatic member 23 to push the telescopic rod 24 outward until a is equal to b;

[0060] When a is equal to b, the control element 231 controls the pneumatic member 23 to not do work;

[0061] When a is greater than b, the control element 231 controls the pneumatic member 23 to pull the telescopic rod 24 inward until a is equal to b;

[0062] The control element 231 controls the pneumatic part 23 to ensure that the smoothing effect of the wire-smoothing accessory 5 on the metal wire material 11 for spraying is continuously maintained at an optimal state.

[0063] In certain preferred embodiments, Figure 6 As shown, a tapered hole is provided at one end of the circular through hole in the center of the wire-feeding accessory 5 close to the first wire feeding wheel 18 and the second wire feeding wheel 20 , and the tapered hole facilitates the metal wire 11 for spraying to enter the wire-feeding accessory 5 more easily.

[0064] In some preferred embodiments, the length of the slide rail 82 is greater than the sum of the thicknesses of the wire caressing accessory 5, the first pulley 9 and the two support members 8, which helps the support member 8 to make the sliding member 81 slide stably in the slide rail 82 within the effective working distance.

[0065] In some preferred embodiments, a motor sleeve 131 is sleeved on the outer side of the motor 13 , and the motor sleeve 131 is glued to one side of the fixing plate 22 , which is beneficial to fix the motor 13 .

[0066] In certain preferred embodiments, Fig.12 As shown, the nozzle 1 of the device is fixedly connected to a spray gun housing 26, and gear buckle covers 29 are provided on both sides of the spray gun housing 26. The gear buckle covers 29 are conducive to placing the gear transmission mechanism in the device and play a protective role. A wire feeding inlet 291 is provided on one side of the gear buckle cover 29, and a handle 28 is provided below the spray gun housing 26. A switch 27 is provided on one side of the handle 28, and the fixing plate 22 is fixedly installed in the spray gun housing 26.

[0067] In the above embodiment, the switch 27 is pressed, the motor 13 is started, and the screw 14 is driven to rotate through the first transmission shaft 12. The screw 14 drives the first gear 15 to rotate through the worm gear transmission rod. The first gear 15 drives the second gears 17 on both sides to rotate through the second transmission shaft 16. The second gear 17 drives the third gear 19 to rotate due to the gear meshing action. When the second gear 17 and the third gear 19 rotate, they respectively drive the first wire feeding wheel 18 and the second wire feeding wheel 20 glued thereon to rotate, so that the metal wire 11 for spraying passes through the wire feeding inlet 291, the first wire feeding wheel 18 and the second wire feeding wheel 20 in turn, and enters the device nozzle 1 until they contact each other and short-circuit, completing the wire feeding work of the device. At the same time, high-pressure air enters the device nozzle 1 through the high-pressure air inlet 30, and the molten metal wire 11 for spraying is atomized into metal micro-droplets, which are sprayed onto the surface of the workpiece at high speed to perform the spraying operation. The rotation of the screw 14 drives the telescopic rod 24 to rotate, causing the first pulley 9 fixed on the telescopic rod 24 to rotate. The first pulley 9 drives the second pulley 6 to rotate through the V-belt 7 to achieve stable dispersion of the torque on the first pulley 9. At the same time, the wire-smoothing accessory 5 rotates with the second pulley 6. The rotation of the wire-smoothing accessory 5 causes the internal through hole to continuously apply uniform pressure to the internal metal wire 11 for spraying, which is conducive to better smoothing the metal wire 11 for spraying. At the same time, the device receives the force of the pressure sensor 51 through the control element 231, controls the pneumatic part 23 to drive the telescopic rod 24 to move, and the telescopic rod 24 drives the first pulley 9 to move. The first pulley 9 drives the second pulley 6 to move forward and backward relative to the wire-smoothing accessory 5 through the support member 8, which is conducive to ensuring that the wire-smoothing pressure in the wire-smoothing accessory 5 is constant and the wire-smoothing effect is stably exerted, so that the device can operate stably.

[0068] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0069] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spraying device, comprising a spray head (1), It is characterized in that Two conductive nozzles (2) are inserted into one side of the nozzle (1) of the device, and a metal wire (11) for spraying is inserted into the interior of each conductive nozzle (2). One end of each conductive nozzle (2) is threadedly connected to a wire guide fitting (3), and the wire guide fitting (3) is conductive. One end of each wire guide fitting (3) is threadedly connected to a wire guide tube (4), and the other end of the wire guide tube (4) is glued to a wire-feeding fitting (5). The wire-feeding hole of the wire-feeding fitting (5) is a long straight hole, and the wire-feeding hole runs through the entire wire-feeding fitting (5). The inner surface of the wire-feeding hole is A pressure sensor (51) is embedded in the surface, the pressure receiving surface of the pressure sensor (51) is a cylindrical surface and is flush with the inner wall of the threading hole, and the pressure receiving surface of the pressure sensor (51) occupies 1 / 3-1 / 2 of the length of the threading hole along the length direction of the threading hole, the thread-stroking accessory (5) is provided with a first bracket (52) on one side close to the guide wire accessory (3) in the direction of the threading hole, a fixing plate (22) is welded below the first bracket (52), and a second bracket (22) is provided on the other side of the thread-stroking accessory (5). 53), the second bracket (53) is also welded to the fixing plate (22), the outer side of the wire-grasping accessory (5) is sleeved with a second pulley (6), the wire-grasping accessory (5) is connected to the center of the second pulley (6) by a key connection, the two second pulleys (6) are connected by a V-belt (7), the V-belt (7) is sleeved on the outside of each second pulley (6), and a first pulley (9) is further provided between the two second pulleys (6), the V-belt (7) is also sleeved on the outside of the first pulley (9), the first pulley (9) is a driving wheel, a telescopic rod (24) is passed through the center of the first pulley (9), one end of the telescopic rod (24) is fixedly connected to a pneumatic part (23), a screw rod (14) is sleeved on the outer side of the pneumatic part (23), a control element (231) is arranged between the pneumatic part (23) and the screw rod (14), a first transmission shaft (12) is passed through the interior of the screw rod (14), the other end of the first transmission shaft (12) is connected to a motor (13), and the other end of the first transmission shaft (12) is sleeved on a limit shaft cover (121); Support members (8) are provided on both sides of the first pulley (9), two ends of the support member (8) are close to one side of the second pulley (6), a sliding member (81) is inserted below the support member (8), the sliding member (81) is slidably connected to a sliding rail (82), and the bottom of the sliding rail (82) is glued to the fixing plate (22); One side of the screw rod (14) is meshedly connected with a first gear (15), a second transmission shaft (16) is passed through the center of the first gear (15), both ends of the second transmission shaft (16) are connected to second gears (17), a first wire feeding wheel (18) is glued to the side of the second gear (17) away from the first gear (15), a third gear (19) is meshedly connected below the second gear (17), a second wire feeding wheel (20) is glued to one side of the third gear (19), a third transmission shaft (21) is passed through the centers of the second wire feeding wheel (20) and the third gear (19), and a metal wire (11) for spraying is provided between the first wire feeding wheel (18) and the second wire feeding wheel (20); A fourth rolling groove (84) is provided in the center of one side of the support member (8), and third rolling grooves (83) are provided at both ends of the support member (8) on the same side. Balls (10) are provided inside the fourth rolling groove (84) and the third rolling groove (83). Second rolling grooves (61) are provided on both sides of the second pulley (6), and the second rolling groove (61) and the third rolling groove (83) are opposite to and adapted to form a first closed track. A conical sleeve hole (62) is provided in the center of the second pulley (6), and a belt groove (63) is provided on the outer side of the second pulley (6). First rolling grooves (91) are provided on both sides of the first pulley (9), and the first rolling grooves (91) and the fourth rolling grooves (84) are opposite to and adapted to form a second closed track. The screw rod (14) rotates to drive the telescopic rod (24) to rotate, causing the first pulley (9) fixed on the telescopic rod (24) to rotate. The first pulley (9) drives the second pulley (6) to rotate through the V-belt (7) to achieve stable dispersion of the torque on the first pulley (9). At the same time, the wire-feeding accessory (5) rotates with the second pulley (6). The rotation of the wire-feeding accessory (5) causes the internal through hole to continuously apply uniform pressure to the internal metal wire (11) for spraying. At the same time, the device receives the pressure through the control element (231). The force sensor (51) is subjected to force, and controls the pneumatic component (23) to drive the telescopic rod (24) to move. The telescopic rod (24) drives the first pulley (9) to move. The first pulley (9) drives the second pulley (6) to move forward and backward relative to the wire-feeding accessory (5) through the support component (8). The wire-feeding accessory (5) is made of rubber or plastic. The wire-feeding hole is squeezed by changing the relative position between the wire-feeding accessory (5) and the second pulley (6), thereby changing the pressure applied to the metal wire (11) for spraying inside the wire-feeding hole.

2. A spraying device according to claim 1, It is characterized in that A tapered hole is provided at one end of the circular through hole in the center of the wire-feeding accessory (5) close to the first wire feeding wheel (18) and the second wire feeding wheel (20), and the tapered hole facilitates the metal wire (11) for spraying to enter the wire-feeding accessory (5) more easily.

3. A spraying device according to claim 2, It is characterized in that The length of the slide rail (82) is greater than the sum of the thicknesses of the thread-stroking accessory (5), the first pulley (9) and the two support members (8).

4. A spraying device according to claim 3, It is characterized in that A motor sleeve (131) is sleeved on the outer side of the motor (13), and the motor sleeve (131) is glued to one side of the fixing plate (22).

5. A spraying device according to claim 4, It is characterized in that The device nozzle (1) is fixedly connected to a spray gun housing (26), gear buckle covers (29) are provided on both sides of the spray gun housing (26), a wire feeding inlet (291) is provided on one side of the gear buckle cover (29), a handle (28) is provided below the spray gun housing (26), a switch (27) is provided on one side of the handle (28), and the fixing plate (22) is fixedly installed in the spray gun housing (26), and a high-pressure air inlet (30) is provided on one side of the device nozzle (1).

6. A spraying device according to claim 5, It is characterized in that One end of the telescopic rod (24) is fixedly connected to a limit cover (25).

7. A spraying device according to claim 6, It is characterized in that One end of the third transmission shaft (21) is inserted into a transmission shaft frame (211), and the transmission shaft frame (211) is plugged into the fixing plate (22).

8. A spraying device according to claim 7, It is characterized in that The control element (231) is electrically connected to the pressure sensor (51), the control element (231) is electrically connected to the pneumatic part (23), and the control element (231) further comprises the following operating steps: When the pressure value received by the pressure sensor (51) is set to a in the control element (231), the wire-smoothing accessory (5) has the best smoothing effect on the metal wire material (11) for spraying, and the pressure value actually received by the pressure sensor (51) is set to b; When a is smaller than b, the control element (231) controls the pneumatic member (23) to push the telescopic rod (24) outward until a is equal to b; When a is equal to b, the control element (231) controls the pneumatic part (23) to not perform work; When a is greater than b, the control element (231) controls the pneumatic part (23) to pull the telescopic rod (24) inward until a is equal to b.

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