Intelligent welding device for mold manufacturing

Abstract

The invention discloses an intelligent welding device for mold manufacturing, and belongs to the technical field of welding, the intelligent welding device comprises a base, a clamping assembly mounted on a mold and a brazing mechanism, the clamping assembly comprises a U-shaped mounting plate, the bottom end of the U-shaped mounting plate is fixedly connected with a sealing pressing plate through a connecting shaft, and a material injection hole is formed in the center of the interior of the sealing pressing plate; a one-way pipe is arranged in the material injection hole, and a suction hole is formed in the position, located on one side of the material injection hole, in the sealing pressing plate. Water is injected into the inner side of the gap between the fusion welding alloy and the to-be-repaired position of the mold through the water injection hole in the sealing pressing plate, air on the inner side of the gap between the fusion welding alloy and the to-be-repaired position of the mold can be exhausted in the water injection process, and then the water on the inner side of the gap is pumped out through the positioning pipe for capacity measurement. The size of the space on the inner side of the gap can be accurately obtained, so that the melting amount of the brazing filler metal can be accurately controlled, the phenomenon that the brazing filler metal is too much or insufficient is avoided, and the repairing difficulty of the mold is remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to an intelligent welding device for mold manufacturing. Background Art

[0002] Brazing refers to a welding method in which the solder with a melting point lower than the welding part is heated to the melting temperature of the solder at the same time, and the gap between the solid workpieces is filled with liquid solder to connect the metals.

[0003] In the mold manufacturing process, mold repair is a common link. During the trial process, the mold may have failure forms such as angle collapse, deformation, wear and even breakage, so the mold needs to be repaired to ensure the normal use of the mold. For larger defects on the mold surface, brazing is a common welding method used for repair. When the existing brazing is used to repair the mold, the brazing material is hot-melted, and then the molten brazing material is poured into the gap between the molten alloy and the mold to be repaired. The molten brazing material will automatically enter the inside of the gap under the capillary action. After the molten brazing material solidifies, the welding function between the molten alloy and the mold repair can be achieved. However, since the mold to be repaired is an irregular shape, it is impossible to judge the size of the space at the gap, and then it is impossible to determine the required brazing material. Therefore, there is often too much or insufficient brazing material, resulting in a waste of brazing material or the need for secondary hot melting of brazing material, which increases the difficulty of mold repair;

[0004] In addition, when the molten solder enters the gap, the air inside the gap often causes the molten solder to fail to completely fill the gap, thereby reducing the stability of welding between the molten alloy and the mold to be repaired. Therefore, an intelligent welding device for mold manufacturing is proposed to solve the above problem. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that when brazing and repairing a mold, the material of the brazing material cannot be determined, and the phenomenon of excessive or insufficient brazing material often occurs, resulting in waste of brazing material or the need for secondary hot-melting of the brazing material, which increases the difficulty of mold repair. An intelligent welding device for mold manufacturing is proposed to solve the problem that

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A smart welding device for mold manufacturing, comprising a base, a clamping assembly installed on the mold and a brazing mechanism, the clamping assembly comprising a U-shaped mounting plate, the bottom end of the U-shaped mounting plate is fixedly connected to a sealing pressure plate through a connecting shaft, an injection hole is provided at the inner center of the sealing pressure plate, a one-way tube is provided in the injection hole, a suction hole is provided inside the sealing pressure plate on one side of the injection hole, a hot melt tube is fixedly connected to the top of the sealing pressure plate at the injection hole, a positioning tube is fixedly connected to the top of the sealing pressure plate at the suction hole, a magnetic pressure block is slidably provided inside the hot melt tube, a magnetic piston block is slidably provided inside the positioning tube, the outer sides of the hot melt tube and the positioning tube are both sleeved with magnetic attraction rings that are magnetically attracted to the magnetic pressure block and the magnetic piston block, the magnetic attraction rings are fixedly connected, a heating ring is provided on the surface of the hot melt tube, and a negative pressure generating assembly is provided at the top of the sealing pressure plate at the outer side of the hot melt tube;

[0008] The sealing pressure plate is provided with a negative pressure generating hole and a water injection hole, the water injection hole is provided with a sealing plug, the negative pressure generating assembly comprises an annular plate fixedly connected to the top of the sealing pressure plate and an annular negative pressure generating block slidably connected to the inner side of the annular plate, a negative pressure generating cylinder is installed at the top of the annular plate, and the output end of the negative pressure generating cylinder is fixedly connected to the annular negative pressure generating block;

[0009] A through opening is opened at the center of the magnetic pressing block, a driving tube is fixedly connected to the top of the magnetic pressing block, a connecting piece is fixedly connected to the top of the driving tube, a lifting cylinder is installed on the top of the U-shaped mounting plate, and the output end of the lifting cylinder is magnetically attracted to the connecting piece through the magnetic block.

[0010] Preferably, the interior of the one-way tube is a structure that is narrow at the top and wide at the bottom, and a porous plate is fixedly connected to the inner wall of the one-way tube, and a metal sealing ball is connected to the top of the porous plate via a sealing spring.

[0011] Preferably, the heating ring and the sealing plate are both provided with an electromagnetic induction heating coil inside, and the electromagnetic induction heating coil is used to melt the solder.

[0012] Preferably, a blocking air bag is provided on the inner wall of the suction hole, an air cavity communicating with the suction hole is opened inside the sealing pressure plate, and a micro air pump connected to the air cavity is installed on the top of the sealing pressure plate.

[0013] Preferably, the positioning tube is made of a transparent material, a volume scale is provided on the surface of the positioning tube, a feedback ring is sleeved on the surface of the positioning tube, and an elastic rubber layer for increasing friction is provided inside the feedback ring.

[0014] Preferably, the feedback ring is a hollow structure, and the hollow space is two-thirds of the entire ring space. The inner wall of the feedback ring is provided with an annular opening, and the interior of the feedback ring is provided with oppositely arranged photoelectric sensors. The end faces of both ends of the feedback ring are provided with volume scale indicator marks, and the surface of the feedback ring is provided with an indicator light.

[0015] Preferably, a liquid discharge pipe is fixedly connected to the side wall of the positioning tube near the bottom end, and a one-way valve and a liquid sensor are provided on the liquid discharge pipe.

[0016] Preferably, a positioning screw is threadedly connected to the side wall of the U-shaped mounting plate, and one end of the positioning screw is rotatably connected to a positioning clamping plate;

[0017] A flip plate is arranged above the base, the top of the flip plate is fixedly connected with a fixed clamping plate and an auxiliary plate, the internal thread of the auxiliary plate is connected with a clamping screw, and one end of the clamping screw is rotatably connected with a movable clamping plate.

[0018] Preferably, the top end of the base is fixedly connected to a U-shaped frame, the bottom end of the flip plate is fixedly connected to a rotating shaft, both ends of the rotating shaft are rotatably connected to the U-shaped frame and both ends of the rotating shaft are fixedly connected to reduction gears, a flip motor is installed on the side wall of the U-shaped frame, and the output end of the flip motor is fixedly connected to a driving gear meshing with the reduction gear.

[0019] Preferably, the bottom end of the flip plate is connected to a support plate via an electric hinge.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. This solution injects water into the inner side of the gap between the welding alloy and the part to be repaired of the mold through the water injection hole on the sealing pressure plate. During the water injection process, the air inside the gap between the welding alloy and the part to be repaired of the mold can be discharged. Then, the water inside the gap is extracted by using a positioning tube for capacity measurement. The size of the space inside the gap can be accurately obtained, so that the melting amount of the solder can be accurately controlled to avoid excessive or insufficient solder, which significantly reduces the difficulty of repairing the mold.

[0022] 2. This solution can realize the limit capture function of the weld alloy through the negative pressure generating component, so that the weld alloy can be stably placed at the place to be repaired in the mold without the need for staff to hold it. At the same time, the weld alloy and the mold surface can be kept at the same level to avoid the phenomenon of weld alloy protrusion, ensure the flatness of the mold repair, and further reduce the difficulty of mold repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of an intelligent welding device for mold manufacturing proposed by the present invention;

[0024] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0025] Figure 3 This is a schematic cross-sectional structure diagram of a local structure of an intelligent welding device for mold manufacturing proposed by the present invention;

[0026] Figure 4 for Figure 3 The enlarged structural diagram at B in the middle;

[0027] Figure 5 for Figure 3 The enlarged structural diagram at C in the middle;

[0028] Figure 6 for Figure 3 The enlarged structural diagram at D in the middle;

[0029] Figure 7 This is a schematic cross-sectional structure diagram of a feedback loop in an intelligent welding device for mold manufacturing proposed by the present invention;

[0030] Figure 8 This is an assembly diagram of the connection between the flip plate and the base in an intelligent welding device for mold manufacturing proposed by the present invention.

[0031] In the figure: 1. Base; 2. Turning plate; 3. U-shaped mounting plate; 4. Fixed clamp; 5. Movable clamp; 6. Positioning clamp; 7. Positioning screw; 8. Turning motor; 9. Reduction gear; 10. Ring plate; 11. Hot melt pipe; 12. Positioning pipe; 13. Lifting cylinder; 14. Connector; 15. Drive pipe; 16. Feedback loop; 17. Magnetic ring; 18. Electromagnetic induction heating coil; 19. Magnetic pressing block; 20. , magnetic piston block; 21, annular negative pressure generating block; 22, drain pipe; 23, one-way pipe; 24, metal sealing ball; 25, sealing spring; 26, porous plate; 27, sealing airbag; 28, elastic rubber layer; 29, negative pressure generating cylinder; 30, heating ring; 31, sealing pressure plate; 3101, negative pressure generating hole; 3102, water injection hole; 32, clamping screw; 33, opposing photoelectric sensor; 34, support plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Example, see Figures 1 to 8 , an intelligent welding device for mold manufacturing, comprising a base 1, a clamping assembly mounted on the mold and a brazing mechanism, the clamping assembly comprising a U-shaped mounting plate 3, the bottom end of the U-shaped mounting plate 3 is fixedly connected to a sealing pressing plate 31 through a connecting shaft, the sealing pressing plate 31 is pressed on the surface of the mold to be repaired, and the sealing function of the repaired part is realized;

[0036] An injection hole is opened at the inner center of the sealing pressure plate 31, and a one-way tube 23 is arranged in the injection hole. Furthermore, the interior of the one-way tube 23 is a narrow upper part and wide lower part structure. The inner wall of the one-way tube 23 is fixedly connected with a porous plate 26, and the top of the porous plate 26 is connected with a metal sealing ball 24 through a sealing spring 25. Under the action of the sealing spring 25, the metal sealing ball 24 fits tightly with the inner wall of the inner top end of the one-way tube 23, so that the solder in the hot melt tube 11 can only be discharged through the one-way tube 23, and cannot flow back through the one-way tube 23.

[0037] A suction hole is provided inside the sealing platen 31 on one side of the injection hole, a hot melt tube 11 is fixedly connected to the top of the sealing platen 31 at the injection hole, a positioning tube 12 is fixedly connected to the top of the sealing platen 31 at the suction hole, a magnetic pressing block 19 is slidably provided inside the hot melt tube 11, a magnetic piston block 20 is slidably provided inside the positioning tube 12, a magnetic ring 17 which is magnetically attracted to the magnetic pressing block 19 and the magnetic piston block 20 is sleeved on the outer sides of the hot melt tube 11 and the positioning tube 12, the magnetic rings 17 are fixedly connected, and the magnetic ring 17 can realize the synchronous movement of the magnetic pressing block 19 in the hot melt tube 11 and the magnetic piston block 20 in the positioning tube 12, so as to facilitate the quantitative measurement of the hot melt space inside the hot melt tube 11 through the positioning tube 12;

[0038] It should be noted that: the magnetic piston block 20 in the positioning tube 12 moves upward, which can extract the water in the gap between the molten alloy and the part of the mold to be repaired. At the same time, the volume scale on its surface is used to measure the capacity of the extracted water, thereby determining the specific space size of the gap, providing a basis for the amount of solder used.

[0039] A heating ring 30 is provided on the surface of the hot melt tube 11. Furthermore, an electromagnetic induction heating coil 18 is provided inside the heating ring 30 and the sealing plate 31. The electromagnetic induction heating coil 18 is used to melt the solder.

[0040] It is worth noting that the electromagnetic induction heating coil 18 inside the sealing pressure plate 31 can heat the metal sealing ball 24 and further heat the solder remaining inside the one-way tube 23 to prevent the solder from solidifying and affecting the normal movement of the metal sealing ring inside the one-way tube 23.

[0041] The top of the sealing pressure plate 31 is located on the outside of the hot melt tube 11 and is provided with a negative pressure generating assembly. A negative pressure generating hole 3101 and a water injection hole 3102 are provided inside the sealing pressure plate 31. A sealing plug is provided inside the water injection hole 3102. The negative pressure generating assembly includes an annular plate 10 fixedly connected to the top of the sealing pressure plate 31 and an annular negative pressure generating block 21 slidably connected to the inner side of the annular plate 10. A negative pressure generating cylinder 29 is installed at the top of the annular plate 10, and the output end of the negative pressure generating cylinder 29 is fixedly connected to the annular negative pressure generating block 21; further, a sealing air bag 27 is provided on the inner wall of the suction hole, an air cavity connected to the suction hole is provided inside the sealing pressure plate 31, and a micro air pump connected to the air cavity is installed at the top of the sealing pressure plate 31.

[0042] It should be noted that water can be injected into the gap between the welded alloy and the part of the mold to be repaired through the water injection hole 3102. During the water injection process, the air inside the gap can be expelled, and the air is expelled to the inside of the positioning tube 12 through the suction hole until the inside of the positioning tube 12 is filled with water, and then the water injection into the inside of the gap is stopped;

[0043] Afterwards, a micro air pump is used (the micro air pump has a dual function of suction and is a prior art, and its specific working principle is not repeated here) to inflate the sealing air bag 27 on the inside of the suction hole through the air cavity and expand it to achieve the sealing function of the suction hole, and then the connecting part 14 is driven downward by the lifting cylinder 13, and the driving tube 15 is driven downward by the connecting part 14, thereby driving the magnetic pressing block 19 at its bottom end to move downward, and the magnetic pressing block 19 drives the magnetic piston block 20 to move downward through the magnetic attraction ring 17, and discharges the excess water and air on the inside of the positioning tube 12 through the drain pipe 22 (the liquid sensor on the drain pipe 22 is in a closed state during this process).

[0044] A through hole is opened at the center of the magnetic pressing block 19, the top of the magnetic pressing block 19 is fixedly connected to the driving tube 15, the top of the driving tube 15 is fixedly connected to the connecting piece 14, and the top of the U-shaped mounting plate 3 is installed with a lifting cylinder 13, and the output end of the lifting cylinder 13 is magnetically attracted to the connecting piece 14 through a magnetic attraction block.

[0045] It is worth noting that: before the lifting cylinder 13 is used, the extension amount of the output end thereof is minimized to avoid affecting the normal lifting of the driving tube 15 .

[0046] It should be noted that the output end of the lifting cylinder 13 utilizes the magnetic attraction between the magnetic block and the connecting piece 14 to drive the connecting piece 14 to move downward, and then the connecting piece 14 drives the driving tube 15 connected thereto to move downward, providing driving force for the movement of the magnetic pressure block 19 and the magnetic piston block 20.

[0047] Furthermore, the positioning tube 12 is made of a transparent material, a volume scale is provided on the surface of the positioning tube 12, a feedback ring 16 is sleeved on the surface of the positioning tube 12, an elastic rubber layer 28 for increasing friction is provided inside the feedback ring 16, further, the feedback ring 16 is a hollow structure, and the hollow space is two-thirds of the entire ring space, an annular opening is provided on the inner wall of the feedback ring 16, a relatively arranged opposing photoelectric sensor 33 is installed inside the feedback ring 16, volume scale indication marks are provided on the end faces of both ends of the feedback ring 16, and an indicator light is provided on the surface of the feedback ring 16.

[0048] It should be noted that the elastic rubber layer 28 can create a large friction force between the feedback ring 16 and the side wall of the positioning tube 12, thereby realizing the limiting function of the feedback ring 16 on the positioning tube 12;

[0049] Since the positioning tube 12 is made of transparent material, the light signal emitted by the opposing photoelectric sensor 33 can pass through the side wall of the positioning tube 12. The tube wall of the positioning tube 12 is very thin and the refractive index is very small, resulting in a very small refraction angle of the light of the opposing photoelectric sensor 33, thus not affecting the reception of normal signals by the opposing photoelectric sensor 33.

[0050] It is worth noting that the indicator mark and the opposite photoelectric sensor 33 are in the same horizontal plane, that is, the indicator mark and the opposite photoelectric sensor 33 point to the same volume scale value;

[0051] The volume scale value pointed to by the indicator mark is greater than the volume scale value corresponding to the water capacity realized inside the positioning tube 12 , and the difference between the two is the thickness value of the magnetic piston block 20 .

[0052] Furthermore, a liquid discharge pipe 22 is fixedly connected to the side wall of the positioning tube 12 near the bottom end, and a one-way valve and a liquid sensor are provided on the liquid discharge pipe 22 .

[0053] It should be noted that when the water in the gap between the welded alloy and the part to be repaired of the mold is extracted, the entire device and the mold need to be inverted. When all the water in the gap between the welded alloy and the part to be repaired of the mold is extracted into the positioning tube 12, in order to ensure that the water in the gap is completely extracted, the actual extraction amount of the magnetic piston block 20 is greater than the capacity of the water. Therefore, the air in the positioning tube 12 needs to be discharged through the drain pipe 22. At this time, the positioning tube 12 is in an inverted state, and the expansion and contraction amount of the output end of the lifting cylinder 13 is reduced, thereby driving the connecting piece 14 to move, and the connecting piece 14 drives the driving tube 15 The driving tube 15 drives the magnetic pressing block 19 to move toward the direction of the one-way tube 23, and then drives the magnetic piston block 20 to move toward the bottom end of the positioning tube 12 through the magnetic ring 17, thereby squeezing the water inside the positioning tube 12, so that the air in the positioning tube 12 can be discharged through the drain pipe 22. When the water in the positioning tube 12 begins to enter the drain pipe 22, the liquid sensor will detect the presence of water, and then feedback to the external controller. The external controller controls the lifting cylinder 13 to stop working. At this time, the volume scale pointed to by the bottom edge of the magnetic piston block 20 is the space size value of the gap between the welded alloy and the part to be repaired in the mold.

[0054] It is worth noting that: in the above process, a micro air pump is used to pump air into the blocking airbag 27 through the air cavity, so that the blocking airbag 27 expands to ensure that the suction hole is in a closed state.

[0055] It is worth noting that the diameter of the drain pipe 22 is very small, and the amount of liquid entering the drain pipe 22 is also very small. As long as a little water enters the drain pipe 22, the liquid sensor will detect the presence of water, causing the magnetic piston block 20 to stop squeezing the water. Therefore, the effect of the water discharged into the drain pipe 22 on the overall water capacity inside the positioning tube 12 can be ignored.

[0056] Furthermore, the side wall of the U-shaped mounting plate 3 is threadedly connected with a positioning screw 7, and one end of the positioning screw 7 is rotatably connected with a positioning clamping plate 6; a flip plate 2 is arranged above the base 1, and the top of the flip plate 2 is fixedly connected with a fixed clamping plate 4 and an auxiliary plate, and the internal thread of the auxiliary plate is connected with a clamping screw 32, and one end of the clamping screw 32 is rotatably connected with a movable clamping plate 5, the top of the base 1 is fixedly connected with a U-shaped frame, and the bottom end of the flip plate 2 is fixedly connected with a rotating shaft, both ends of the rotating shaft are rotatably connected with the U-shaped frame and both ends of the rotating shaft are fixedly connected with a reduction gear 9, and a flip motor 8 is installed on the side wall of the U-shaped frame, and the output end of the flip motor 8 is fixedly connected with a driving gear meshing with the reduction gear 9.

[0057] It should be noted that: by rotating the positioning screw 7 to drive the positioning clamping plate 6 to move, the positioning clamping plates 6 on both sides can be used to clamp and fix the mold, so that the brazing mechanism can be installed on the mold;

[0058] It should be noted that: start the flip motor 8, the flip motor 8 drives the driving gear at its output end to rotate, the driving gear drives the reduction gear 9 meshing with it to rotate, the reduction gear 9 drives the rotating shaft to rotate, the rotating shaft drives the flip plate 2 to rotate, the flip plate 2 with the mold and the brazing mechanism rotates into an inverted state, so that the positioning tube 12 can completely extract the water inside the gap.

[0059] Furthermore, the bottom end of the flip plate 2 is connected to a support plate 34 via an electric hinge.

[0060] It should be noted that the support plate 34 can play a supporting role. When the flip plate 2 needs to be rotated, the electric hinge can be used to drive the support plate 34 to rotate, thereby realizing the storage function of the support plate 34.

[0061] When the present invention is used, the overall process is divided into seven steps: mold installation, brazing mechanism installation, water injection and exhaust at the mold repair site, precise quantitative measurement at the mold repair site, quantitative melting of brazing material, completion of brazing material injection, device removal, and finishing work repair;

[0062] Mould installation: Place the mould to be repaired on the flip plate 2, and then rotate the clamping screw 32, which drives the movable clamping plate 5 to move, and cooperates with the fixed clamping plate 4 to achieve the clamping and fixing function of the mould;

[0063] Installation of the brazing mechanism: After that, a through hole is drilled at the center of the molten alloy using a drilling machine, and then the one-way tube 23 is inserted into the inner side of the through hole. At this time, the molten alloy is fitted with the sealing plate 31 (at this time, the molten alloy blocks the negative pressure generating hole 3101), and the negative pressure generating cylinder 29 is turned on. The negative pressure generating cylinder 29 drives the annular negative pressure generating block 21 to move upward, so that negative pressure is formed on the inner side of the annular plate 10, which can realize the negative pressure adsorption function of the molten alloy. Then, the sealing plate 31 is covered on the part to be repaired of the mold to realize the sealing function of the part to be repaired of the mold. At this time, the molten alloy is located on the inner side of the part to be repaired of the mold, and the positioning screw 7 is rotated at the same time. The positioning screw 7 drives the positioning clamp 6 to move, and the positioning clamp 6 is used to clamp the mold to realize the function of installing the brazing mechanism on the mold;

[0064] Inject water and exhaust air at the mold repair site: Then inject water into the gap between the welded alloy and the mold to be repaired through the water injection hole 3102 on the sealing pressure plate 31. The injected water can expel the air inside the gap and squeeze the air to the inside of the positioning tube 12 through the suction hole on the sealing pressure plate 31. When water enters the inside of the positioning tube 12 (as can be seen by observation), the micro air pump can be turned on. The micro air pump inflates the sealing airbag 27 inside the suction hole through the air cavity, so that the sealing airbag 27 expands to achieve the sealing function of the suction hole, and the lifting and lowering is turned on. The cylinder 13 drives the connecting piece 14 downward through the lifting cylinder 13, and drives the driving tube 15 downward through the connecting piece 14, thereby driving the magnetic pressing block 19 at the bottom thereof downward. The magnetic pressing block 19 drives the magnetic piston block 20 downward through the magnetic attraction ring 17, and discharges the excess water and air inside the positioning tube 12 through the drain pipe 22 (the liquid sensor on the drain pipe 22 is in the closed state during this process), ensuring that the suction volume inside the positioning tube 12 is zero before pumping water, thereby facilitating the subsequent accurate quantification of the water inside the gap;

[0065] Precise quantitative measurement of the mold repair part: the electric hinge is used to drive the support plate 34 to rotate, so as to realize the storage function of the support plate 34, and then the flip motor 8 is turned on, and the flip motor 8 drives the driving gear at its output end to rotate, and then drives the reduction gear 9 meshing with it to rotate, and the reduction gear 9 drives the rotating shaft to rotate, and the rotating shaft drives the flip plate 2 to rotate, and the flip plate 2 drives the mold and the brazing mechanism to rotate to an inverted state, and then the micro air pump is turned on to extract the gas inside the blocking airbag 27, so that the blocking airbag 27 is deflated, and then the suction hole is opened, and then the lifting cylinder 13 is turned on to make the extension end of the lifting cylinder 13 The shrinkage increases, thereby pushing the connecting piece 14 to move, the connecting piece 14 drives one end of the driving tube 15 to move, the driving tube 15 drives the magnetic pressing block 19 to move away from the one-way tube 23, the magnetic pressing block 19 drives the magnetic ring 17 to move synchronously through the magnetic attraction force, and the magnetic ring 17 drives the magnetic piston block 20 to move synchronously through the magnetic attraction force, so that the magnetic piston block 20 is away from the suction hole, so that all the water inside the gap can be pumped out into the positioning tube 12. In order to ensure that the water inside the gap is completely pumped out, the actual extraction amount of the magnetic piston block 20 is greater than the capacity of the water, so the air inside the positioning tube 12 needs to be drained through the drainage The liquid is discharged from the tube 22. After that, the blocking airbag 27 is inflated by a micro air pump to close the suction hole, and then the lifting cylinder 13 is opened. The output end of the lifting cylinder 13 drives the connecting piece 14 to move, and the connecting piece 14 drives the driving tube 15 to move. The driving tube 15 drives the magnetic pressing block 19 to move toward the direction of the one-way tube 23, and then drives the magnetic piston block 20 to move toward the bottom end of the positioning tube 12 through the magnetic ring 17, thereby squeezing the water inside the positioning tube 12, so that the air in the positioning tube 12 can be discharged through the drainage tube 22. When the water in the positioning tube 12 begins to enter the drainage tube 22, the liquid sensor The device will detect the presence of water and then give feedback to the external controller. The external controller controls the lifting cylinder 13 to stop working. At this time, the volume scale value pointed to by the bottom edge of the magnetic piston block 20 is the space size value between the molten alloy and the part to be repaired of the mold. At this time, the magnetic pressing block 19 inside the hot melt tube 11 is in the same position as the magnetic piston block 20 inside the positioning tube 12. The space size between the magnetic pressing block 19 and the bottom end of the inner side of the hot melt tube 11 is the same as the water capacity inside the positioning tube 12, thereby realizing the precise quantification of the hot melt space inside the hot melt tube 11, that is, realizing the precise measurement function of the solder capacity required for the mold repair part;

[0066] Quantitative melting of solder: Then manually move the feedback ring 16 so that the indicator mark on the feedback ring 16 points to the corresponding volume scale value (the volume scale value pointed to by the bottom edge of the magnetic piston block 20 + the thickness value of the magnetic piston block 20). At this time, the signal transmission between the opposing photoelectric sensors 33 inside the feedback ring 16 is just blocked by the top of the magnetic recovery block. At this time, the indicator light on the feedback ring 16 lights up to serve as a reminder, reminding the staff to stop moving the feedback ring 16, and then start the flip motor 8 again, so that the flip plate 2 drives the mold and the brazing mechanism to reset, and then start the lifting cylinder 13 again. The lifting cylinder 13 drives the magnetic pressing block 19 to move downward through the driving tube 15 (the driving method has been described above), and then drives the magnetic piston block 20 to move downward through the magnetic suction ring 17, so that there is a small amount of space between the magnetic pressing block 19 and the bottom end of the inner side of the hot melt tube 11, and then insert the solder rod (a rod made of solder) into the inner side of the driving tube 15 so that the solder rod is inserted Inside the hot melt tube 11, the bottom end of the solder rod contacts the inner bottom end of the hot melt tube 11, and the electromagnetic induction heating coil 18 is turned on. The electromagnetic induction heating coil 18 can heat and melt the solder rod within its range. As the molten solder in the hot melt tube 11 gradually increases, the molten solder will squeeze the magnetic pressing block 19 upward, causing the magnetic pressing block 19 to move upward, and the magnetic pressing block 19 drives the driving tube 15 to move upward (because the output end of the lifting cylinder 13 is magnetically connected to the connecting piece 14 through the magnetic suction block, the two can be separated and will not hinder the upward movement of the driving tube 15). The magnetic pressing block 19 drives the magnetic piston block 20 to move upward through the magnetic suction ring 17. When the top of the magnetic piston block 20 blocks the transmission of the signal between the opposite photoelectric sensor 33, the opposite photoelectric sensor 33 feeds back to the external controller, and the external controller turns off the electromagnetic induction heating coil 18. At this time, the solder content inside the hot melt tube 11 is exactly the same as the solder capacity required for the mold repair.

[0067] The solder is injected to complete the repair: Then the solder rod is kept inside the driving tube 15, and the lifting cylinder 13 is turned on, so that the magnetic block at the output end of the lifting cylinder 13 first contacts the connecting piece 14 by magnetic attraction, and then drives the connecting piece 14 to move downward. The connecting piece 14 drives the magnetic pressing block 19 to move downward through the driving tube 15, and the magnetic pressing block 19 is used to inject the molten solder into the inner side of the gap through the one-way tube 23. After the solder solidifies, the welding function of the fusion alloy and the mold repairing part can be realized, and the mold repairing function is completed;

[0068] Device dismantling and finishing work: Finally, open the negative pressure generating cylinder 29 to move the annular negative pressure generating block 21 downward and reset, release the negative pressure adsorption of the sealing pressure plate 31 on the molten alloy, and remove the brazing mechanism from the mold. If the one-way tube 23 and the solidified brazing material cannot be separated, the electromagnetic induction heating coil 18 can be turned on again. The electromagnetic induction heating coil 18 on the inner side of the sealing pressure plate 31 can heat the metal sealing ring, and then partially melt the brazing material at the one-way tube 23, so as to facilitate the one-way tube 23 to be pulled out from the through hole in the molten alloy. After the one-way tube 23 is pulled out from the through hole in the molten alloy, the through hole inside the molten alloy is small and can be repaired by manual brazing.

[0069] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent welding device for mold manufacturing, comprising a base (1), a clamping assembly mounted on the mold, and a brazing mechanism, characterized in that: The clamping assembly comprises a U-shaped mounting plate (3), the bottom end of the U-shaped mounting plate (3) is fixedly connected to a sealing plate (31) via a connecting shaft, an injection hole is provided at the center of the sealing plate (31), a one-way tube (23) is provided in the injection hole, a suction hole is provided inside the sealing plate (31) on one side of the injection hole, a hot melt tube (11) is fixedly connected to the top end of the sealing plate (31) at the injection hole, and a positioning tube (12) is fixedly connected to the top end of the sealing plate (31) at the suction hole, The hot melt tube (11) is internally slidably provided with a magnetic pressure block (19), the positioning tube (12) is internally slidably provided with a magnetic piston block (20), the outer sides of the hot melt tube (11) and the positioning tube (12) are both sleeved with magnetic attraction rings (17) that are magnetically attracted to the magnetic pressure block (19) and the magnetic piston block (20), the magnetic attraction rings (17) are fixedly connected, the surface of the hot melt tube (11) is provided with a heating ring (30), and the top end of the sealing pressure plate (31) is located on the outer side of the hot melt tube (11) and is provided with a negative pressure generating component; The sealing plate (31) is provided with a negative pressure generating hole (3101) and a water injection hole (3102) inside, and a sealing plug is provided inside the water injection hole (3102). The negative pressure generating assembly comprises an annular plate (10) fixedly connected to the top of the sealing plate (31) and an annular negative pressure generating block (21) slidably connected to the inner side of the annular plate (10). A negative pressure generating cylinder (29) is installed at the top of the annular plate (10), and the output end of the negative pressure generating cylinder (29) is fixedly connected to the annular negative pressure generating block (21); A through opening is provided at the center of the magnetic pressing block (19); the top end of the magnetic pressing block (19) is fixedly connected to a driving tube (15); the top end of the driving tube (15) is fixedly connected to a connecting piece (14); a lifting cylinder (13) is installed at the top end of the U-shaped mounting plate (3); the output end of the lifting cylinder (13) is magnetically attracted to the connecting piece (14) via a magnetic attraction block.

2. The intelligent welding device for mold manufacturing according to claim 1, characterized in that: The interior of the one-way tube (23) is a structure that is narrow at the top and wide at the bottom. A porous plate (26) is fixedly connected to the inner wall of the one-way tube (23). The top end of the porous plate (26) is connected to a metal sealing ball (24) via a sealing spring (25).

3. The intelligent welding device for mold manufacturing according to claim 1, characterized in that: An electromagnetic induction heating coil (18) is commonly disposed inside the heating ring (30) and the sealing pressing plate (31).

4. The intelligent welding device for mold manufacturing according to claim 1, characterized in that: The inner wall of the suction hole is provided with a blocking air bag (27), the interior of the sealing pressing plate (31) is provided with an air cavity connected to the suction hole, and the top end of the sealing pressing plate (31) is provided with a micro air pump connected to the air cavity.

5. The intelligent welding device for mold manufacturing according to claim 1, characterized in that: The positioning tube (12) is made of a transparent material, a volume scale is provided on the surface of the positioning tube (12), a feedback ring (16) is sleeved on the surface of the positioning tube (12), and an elastic rubber layer (28) for increasing friction is provided inside the feedback ring (16).

6. The intelligent welding device for mold manufacturing according to claim 5, characterized in that: The feedback ring (16) is a hollow structure, and the hollow space is two-thirds of the entire ring space. The inner wall of the feedback ring (16) is provided with an annular opening. Opposing photoelectric sensors (33) arranged opposite to each other are installed inside the feedback ring (16). Volume scale indication marks are provided on the end faces of both ends of the feedback ring (16), and an indicator light is provided on the surface of the feedback ring (16).

7. The intelligent welding device for mold manufacturing according to claim 1, characterized in that: A liquid discharge pipe (22) is fixedly connected to the side wall of the positioning pipe (12) near the bottom end, and a one-way valve and a liquid sensor are provided on the liquid discharge pipe (22).

8. The intelligent welding device for mold manufacturing according to claim 1, characterized in that: The side wall of the U-shaped mounting plate (3) is threadedly connected with a positioning screw (7), and one end of the positioning screw (7) is rotatably connected with a positioning clamping plate (6); A flip plate (2) is arranged above the base (1), the top end of the flip plate (2) is fixedly connected to a fixed clamping plate (4) and an auxiliary plate, the internal thread of the auxiliary plate is connected to a clamping screw (32), and one end of the clamping screw (32) is rotatably connected to a movable clamping plate (5).

9. The intelligent welding device for mold manufacturing according to claim 8, characterized in that: The top end of the base (1) is fixedly connected to a U-shaped frame, the bottom end of the flip plate (2) is fixedly connected to a rotating shaft, both ends of the rotating shaft are rotatably connected to the U-shaped frame and both ends of the rotating shaft are fixedly connected to a reduction gear (9), a flip motor (8) is installed on the side wall of the U-shaped frame, and the output end of the flip motor (8) is fixedly connected to a driving gear meshing with the reduction gear (9).

10. The intelligent welding device for mold manufacturing according to claim 8, characterized in that: The bottom end of the flip plate (2) is connected to a support plate (34) via an electric hinge.

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