A device and method for automatically adding alloy to ductile iron casting by injection molding

Abstract

The invention relates to the technical field of ductile iron production, and discloses an automatic adding device and method for ductile iron casting alloy by a punching method, comprising a spheroidizing furnace body, a sealing part arranged in a furnace mouth of the spheroidizing furnace body, and used for opening and closing the furnace mouth of the spheroidizing furnace body; an adjusting part is used to control the furnace mouth of the spheroidizing furnace body, so as to realize automatic switching of loading and unloading processes and iron casting processes; the extension of the inner rod of the hydraulic rod can make the top cover rise and open the furnace mouth for loading operations; the contraction of the inner rod makes the top cover fall and close the furnace mouth for iron casting processes, thereby improving production efficiency and reducing the complexity and labor intensity of manual operations; the blocking arm of the injection part can automatically seal and open the injection hole by cooperating with a hanger and an arc groove, so as to realize sealing and heat preservation of the heat in the furnace and automatic control of the injection operation, thereby ensuring the stability and continuity of the production process.

Description

Technical Field

[0001] The invention relates to the technical field of ductile iron production, in particular to an automatic adding device and method for ductile iron casting alloy by a punching method. Background Art

[0002] In the production process of ductile iron, the addition of alloys plays a key role in the quality of castings. Ductile iron has high tensile strength and bending fatigue limit, as well as very good plasticity and toughness. It is often used to produce parts with complex forces and high requirements for strength, toughness, and wear resistance.

[0003] According to the Chinese patent publication number CN118650122A, the patent provides an automatic adding device for ductile iron casting alloy by the injection method, including a steel structure support frame and a gantry hanger, the gantry hanger is arranged at the upper end of the steel structure support frame, a conveying mechanism is arranged in the steel structure support frame, a plurality of alloy storage barrels are arranged below the gantry hanger, and a vibrating feeder, a weighing unit and a weighing hopper are arranged in sequence at the lower ends of the plurality of alloy storage barrels, a lifting chute connected to the conveying mechanism is arranged on one side, a spheroidizing ladle for adding material is arranged below the lifting chute, and a ground trolley is arranged at the lower end of the spheroidizing ladle, and an automatic feeding structure of alloy storage barrels, vibrating feeders, weighing units, weighing hoppers, conveying mechanisms and lifting chute is adopted to realize automatic adding and precise delivery operation of alloy materials, avoid poor product material and poor mechanical properties caused by manual wrong material addition, ensure the stability of product performance, improve production efficiency, high degree of automation, and improve operation safety.

[0004] In the production process of ductile iron, the covering material addition method often relies on manual operation, which has problems such as low addition accuracy, low efficiency, poor consistency and high labor intensity of operators. In addition, it is difficult to accurately control the time and amount of addition by manual addition, which easily leads to fluctuations in casting quality and affects the product's pass rate and performance stability. Therefore, an automatic adding device and method for ductile iron casting alloy by punching method is proposed to solve the above problems. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides an automatic adding device and method for ductile iron casting alloy by the punching method, which solves the problem that the manual addition of ductile iron alloy is inefficient and it is difficult to accurately control the time and amount of addition, thereby reducing the quality of castings.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic adding device for ductile iron casting alloy by the punching method, comprising a spheroidizing furnace body, a sealing part arranged in the furnace mouth of the spheroidizing furnace body, for opening and closing the furnace mouth of the spheroidizing furnace body, a covering part installed in the sealing part, for automatically filling and covering the alloy material in the furnace, an unlocking part installed on the inner wall of the spheroidizing furnace body, for unlocking the structure of the covering part for injecting material, a folding bracket installed on the outer wall of the spheroidizing furnace body, an adjusting part installed on the outside of the spheroidizing furnace body, for adjusting and switching loading and unloading processes and cast iron processes, an injecting part installed on the adjusting part, for automatically sealing the heat in the furnace body of the spheroidizing furnace body, and a loading part installed on the folding bracket, for automatically receiving the covering material.

[0009] Preferably, the sealing portion includes a top cover, the bottom of the top cover is fixedly connected with a fence, the fence is inserted into the inner wall of the furnace mouth of the spheroidizing furnace body, the bottom of the top cover is fixedly connected with a rectangular frame 1 and a rectangular frame 2, the rectangular frame 2 is located in the rectangular frame 1, two slide grooves 1 are provided on both sides of the outer wall of the rectangular frame 1, each of the inner walls of the slide groove 1 is provided with side grooves, two slide grooves 2 are provided on both sides of the outer wall of the rectangular frame 2, an injection hole is provided in the middle of the top of the top cover, an injection channel is fixedly connected in the middle of the bottom of the top cover, and two buckle plates are fixedly connected on both sides of the outer wall of the rectangular frame 1.

[0010] Preferably, the covering portion includes two L-shaped sliders, the ends of the two L-shaped sliders are respectively slidably connected to the inner walls of the two slide grooves on the same side, and the other ends of the two L-shaped sliders are respectively slidably connected to the inner walls of the two slide grooves corresponding to the slide grooves, and the ends of the two L-shaped sliders are fixedly connected with sliding pins on both sides of the ends of the two L-shaped sliders, and the two L-shaped sliders are respectively slidably connected to the side grooves of the slide grooves where they are located through the sliding pins, and the ends of the two L-shaped sliders located in the slide grooves are fixedly connected with baffles, and the two L-shaped sliders are provided with movable holes on the sides away from the baffles, and each of the movable holes is slidably connected with a card block, and a spring is elastically connected between the card block and the inner wall of the movable hole, and a supporting plate is fixedly connected between the ends of the two L-shaped sliders, and the side walls of the two L-shaped sliders are provided with mounting blocks, and the side walls of the two mounting blocks are provided with through holes, and the through-hole ear ends of each mounting block are fixedly connected with mounting pieces, and each mounting block is fixedly connected to the corresponding L-shaped slider through the mounting piece, and a counterweight block is installed on each mounting block.

[0011] Preferably, there are two covering parts, and the other covering part is symmetrically installed in the slide groove one and the slide groove two on the other side of the rectangular frame one and the rectangular frame two, the two support plates in the two covering parts are fitted on the inner wall of the rectangular frame two and fit each other, each of the L-shaped sliders is respectively clamped on the corresponding buckle plate through a clamping block, the bottom position of each slide groove two is higher than the bottom position of the corresponding slide groove one, the four baffles are respectively slidably connected to the inner walls of the four slide grooves two, and the bottom end of the injection channel is located above the top of the two support plates.

[0012] Preferably, the unlocking part includes a connecting arm, the connecting arm is fixedly connected to the inner wall of the spheroidizing furnace body, the end of the connecting arm is integrally connected with step surface 1, step surface 2 is integrally connected to the step surface 1, and a retaining spring is fixedly connected to the step surface 2. There are four unlocking parts, and the four unlocking parts correspond to four mounting blocks respectively. The four step surfaces 2 are respectively slidably connected to the inner walls of the four through holes, and the four step surfaces 1 are respectively abutted against the bottom of the four mounting blocks.

[0013] Preferably, the adjustment part includes a hydraulic rod, which is installed on the top of one end of the folding bracket, the inner rod end of the hydraulic rod is rotatably connected to a cross beam, the end of the cross beam is fixedly connected to a hanger, an arc groove is opened at the bottom of the hanger, the hanger is fixedly connected to the top of the top cover, the side wall of the hanger is fixedly connected to a grip rod, and the curvature of the arc groove rotates around the hydraulic rod as the axis.

[0014] Preferably, the injection part includes a blocking arm, which is a T-shaped structure. The blocking arm slides through the top of the inner wall of the hanger and the arc groove and is inserted into the injection hole. The bottom of the two ear ends of the blocking arm are fixedly connected with a tenon plate. Two plate holes are opened on the top of the inner wall of the arc groove. The two tenon plates are respectively slidably connected to the inner walls of the two plate holes. Two sliding rods are fixedly connected to the top of the hanger. The two sliding rods slide through the two ear ends of the blocking arm. Tension springs are elastically connected between the two ear ends of the blocking arm and the hanger.

[0015] Preferably, the feeding part includes a mounting frame, the mounting frame is fixedly installed on the other end side wall of the folding bracket, a sensing device is installed on the side of the mounting frame horizontally facing the spheroidizing furnace body, a storage tank is installed in the mounting frame, a material pipe is connected and installed on the storage tank, the material pipe movably passes through the top edge of the folding bracket and extends, the other side of the end of the folding bracket is fixedly connected to an arc track, a feeding hole is opened on the arc track, and a block is fixedly connected to the inner wall of the arc track.

[0016] Preferably, the extended end of the material pipe is located between the inner walls of the arc track, the end of the arc track away from the folding bracket is aligned with the inner wall of the arc groove, the curvature of the arc track rotates around the hydraulic rod as the axis, the two side edges of the arc track are aligned with two tenon plates, and the outer wall of the spheroidizing furnace body is connected to and installed with an iron punching pipe.

[0017] A method for automatically adding a ductile iron alloy into a casting process, comprising the following steps:

[0018] Step 1: The storage tank is filled with perlite. When the inner rod of the hydraulic rod is extended, the hanger is aligned with the arc track through the arc groove. The hanger is pushed by the grip rod and the top cover is driven to rotate with the hydraulic rod as the axis, so that the arc track enters the inner wall of the arc groove. The two sides of the arc track are pushed up by the edges of the arc track to push the two tenon plates up, so that the blocking arm rises away from the injection hole. At this time, the counterweight slides downward and drives the L-shaped slider to slide downward, so that the end of the L-shaped slider is limited by the bottom of the inner wall of the second slide groove and flips with the sliding pin as the axis, thereby causing the card block to be stuck in the corresponding buckle plate, so that the two support plates are horizontal and aligned with each other to fit the lower frame opening of the closed rectangular frame 2;

[0019] Step 2: When the injection hole slides along the arc track to align with the feeding hole, the blocking arm passes over the block and forms a shield. The infrared signal emitted by the sensor device determines the distance from the hanger, thereby generating an electrical signal to open the electric valve on the material pipe, prompting the perlite to be discharged into the inner wall of the arc track and pass through the feeding hole and the injection hole, and then continue to enter the top of the two support plates along the injection channel to realize automatic material removal, and then the rare earth magnesium ferrosilicon alloy is put into the spheroidizing furnace body for bottom laying;

[0020] Step 3: According to the descending height of the perlite in the storage tank, the loading amount in the rectangular frame 2 is judged, and the hanger is reset by rotating the grip rod to align the enclosure with the furnace mouth of the spheroidizing furnace body. At the same time, the arc groove is separated from the arc track. The sensor device senses that the hanger is away and closes the electric valve. The crossbeam is driven down by the contraction of the inner rod of the hydraulic rod, so that the enclosure is plugged into the spheroidizing furnace body. The tension of the tension spring drives the blocking arm to reset and plug in the injection hole to achieve the sealing of the spheroidizing furnace body;

[0021] Step 4: The top cover descends, driving the rectangular frame 1 and the rectangular frame 2 to descend synchronously. The retaining spring first enters through the through hole and squeezes the retaining block to slide into the movable hole to release the connection with the buckle plate. When the ladder surface 2 enters the through hole, the ladder surface 1 abuts and pushes the mounting block upward to cause the L-shaped slider to rise. At this time, the end of the L-shaped slider loses the limit at the bottom of the inner wall of the second slideway, and at the same time, it is flipped downward by the weight of the perlite and the support plate, and the perlite is sprinkled to cover the rare earth magnesium silicon iron alloy, which is connected to the molten iron delivery system pipeline through the iron flushing pipe. The control valve is adjusted to flush molten iron into the spheroidizing furnace body to cast ductile iron.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the present invention provides a device and method for automatically adding alloy to ductile iron by punching method, which has the following beneficial effects:

[0024] 1. The automatic adding device and method for casting alloy by ductile iron punching method adopts an adjusting part to control the furnace mouth of the spheroidizing furnace body, and can realize the automatic switching of loading and unloading processes and the iron casting process. The extension of the inner rod of the hydraulic rod can make the top cover rise and open the furnace mouth for loading operation, and the contraction of the inner rod makes the top cover fall and close the furnace mouth for the iron casting process, thereby improving production efficiency and reducing the complexity and labor intensity of manual operation. The blocking arm of the injection part can automatically seal and open the injection hole by cooperating with the hanger and the arc groove, thereby realizing the sealing and heat preservation of the heat in the furnace and the automatic control of the injection operation, thereby ensuring the stability and continuity of the production process.

[0025] 2. The automatic adding device and method for alloy casting by the ductile iron punching method adopts a sensor device of the feeding part to accurately judge the distance between the hanger and itself, thereby controlling the electric valve on the material pipe according to the signal to achieve accurate addition of covering material. By observing the descending height of the covering material in the storage tank, the feeding amount in the rectangular frame 2 can also be judged, and the addition amount of the covering material can be further accurately controlled to ensure that it can effectively cover the alloy material in the furnace and provide good conditions for subsequent casting processes. In terms of alloy addition, the entire automatic device and method provide a basis for accurately controlling alloy addition, avoiding the problem of difficulty in accurately controlling the addition time and amount during manual addition, thereby improving the stability of casting quality.

[0026] 3. The automatic adding device and method for casting alloy by the ductile iron punching method adopts a covering part with a unique structural design, including L-shaped sliders, support plates, baffles and other components, which can stably transport the covering material and cover the alloy in the furnace. The sliding and flipping coordination of the two L-shaped sliders and the lifting effect of the support plates enable the covering material to be accurately placed in the required position to prevent it from leaking from the chute or uneven distribution during the adding process, thereby ensuring the covering effect. There are two covering parts and they are installed symmetrically. The two support plates can fit on the inner wall of the second rectangular frame, further ensuring the stability of the filling space of the covering material in the furnace and improving the integrity and uniformity of the covering.

[0027] 4. The automatic adding device and method for alloy casting by the ductile iron injection method adopts covering materials in the furnace to protect the alloy materials. For example, covering materials such as perlite can form a heat insulating layer on the surface of molten iron, reduce heat loss and oxidation of the molten iron, and protect the alloy materials from excessive oxidation during the casting process, thereby improving the utilization rate of the alloy and the quality of castings. The sealing arms of the injection part and the enclosure, top cover and other components of the sealing part form a double seal at the furnace mouth of the spheroidizing furnace body, reducing oxidation and heat loss of molten iron, creating a good sealing environment for the casting process, and is conducive to improving the speed and uniformity of the spheroidizing reaction, thereby improving the quality and efficiency of the spheroidizing treatment.

[0028] 5. The automatic adding device and method for casting alloy by the ductile iron punching method adopts a reasonable structural design of the top cover, enclosure, rectangular frame 1 and rectangular frame 2 of the sealing part and related slide grooves, buckle plates, etc., which can not only realize the effective sealing of the furnace mouth, but also cooperate closely with the covering part to ensure the smooth addition and sealing operations of the covering material. The structure of rectangular frame 1 and rectangular frame 2 provides installation space and sliding tracks for the L-shaped slider. The buckle plate is used to fix the position of the L-shaped slider to ensure the stability of the covering structure. The connecting arm, ladder surface 1, ladder surface 2 and retaining spring of the unlocking part cooperate with the mounting block of the covering part, and can unlock the covering part at the right time, so that the covering material can be smoothly sprinkled to cover the alloy material. This structural design ensures the continuity and stability of the entire device during operation.

[0029] 6. The automatic adding device and method for casting alloy by the ductile iron punching method adopts the hydraulic rod and hanger structure of the adjustment part so that the operator can remotely control the lifting and rotation of the top cover by holding the rod, avoiding the risk of scalding caused by close contact with the spheroidizing furnace body and improving the safety of operation. The design of the mounting frame, sensor device, storage tank, material pipe and arc track of the feeding part simplifies the feeding and transportation process of the covering material and improves the convenience of operation. The sensor device can automatically control the electric valve for feeding, and the arc track provides a guide for the covering material, so that the covering material can smoothly enter the furnace, reducing the need for manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is an overall top axial view of an automatic adding device for casting alloy by a ductile iron punching method proposed by the present invention;

[0031] Figure 2 This is an overall bottom axial view of an automatic adding device for casting alloy by a ductile iron punching method proposed by the present invention;

[0032] Figure 3 This is a structural diagram of the spheroidizing furnace body of a ductile iron casting alloy automatic adding device proposed by the present invention;

[0033] Figure 4 This is a connection diagram of the sealing part and the covering part of the automatic adding device for casting alloy by the ductile iron injection method proposed by the present invention;

[0034] Figure 5 This is a bottom axial view of the sealing part of the automatic adding device for casting alloy by ductile iron punching method proposed by the present invention;

[0035] Figure 6 This is a structural schematic diagram of a sealing portion of an automatic adding device for casting alloy by a ductile iron injection method proposed by the present invention;

[0036] Figure 7 This is a schematic structural diagram of the covering portion of an automatic adding device for casting alloy by a ductile iron punching method proposed by the present invention;

[0037] Figure 8 This is a schematic diagram of the internal structure of a spheroidizing furnace body of an automatic adding device for casting alloy by a ductile iron injection method proposed by the present invention;

[0038] Fig. 9 This is a structural schematic diagram of an unlocking portion of an automatic adding device for casting alloy by a ductile iron punching method proposed by the present invention;

[0039] Fig.10 This is a structural schematic diagram of the adjustment part of the automatic adding device for casting alloy by ductile iron punching method proposed by the present invention;

[0040] Fig.11 The present invention provides a schematic structural diagram of the injection portion of an automatic adding device for casting alloy using the ductile iron injection method.

[0041] In the figure: 1. spheroidizing furnace body; 2. sealing part; 21. top cover; 22. enclosure; 23. rectangular frame 1; 24. slide slot 1; 25. side slot; 26. rectangular frame 2; 27. slide slot 2; 28. injection channel; 29. ​​buckle plate; 3. covering part; 31. L-shaped slider; 32. slide pin; 33. baffle; 34. block; 35. support plate; 36. mounting block; 37. through hole; 38. mounting sheet; 39. counterweight; 4. unlocking part; 41. connecting arm; 4 2. Step 1; 43. Step 2; 44. Retaining spring; 5. Folding bracket; 6. Adjusting part; 61. Hydraulic rod; 62. Crossbeam; 63. Hanger; 64. Arc groove; 65. Grip rod; 7. Filling part; 71. Blocking arm; 72. Tenon plate; 73. Slide bar; 74. Tension spring; 8. Feeding part; 81. Mounting frame; 82. Sensor device; 83. Storage tank; 84. Feeding pipe; 85. Arc track; 86. Feeding hole; 87. Stopper; 9. Punching iron pipe. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0043] See also Figure 1-11 The present invention provides a technical solution: an automatic adding device for casting alloy by ductile iron injection method, comprising a spheroidizing furnace body 1, the spheroidizing furnace body 1 can refer to the pit annealing furnace series products of Suzhou Qiaojia Furnace Industry Co., Ltd., by installing the pit annealing furnace on the ground, and allowing the molten iron conveying system to be injected into the furnace from the underground pipeline for cast iron casting, the sealing part 2 of the present case is arranged in the furnace mouth of the spheroidizing furnace body 1, and is used to open and close the furnace mouth of the spheroidizing furnace body 1, the covering part 3 of the present case is installed in the sealing part 2, and is used to automatically fill and cover the alloy material in the furnace, the unlocking part 4 of the present case is installed on the inner wall of the spheroidizing furnace body 1, and is used to unlock the structure of the covering part 3 for injection, the folding bracket 5 of the present case is installed on the outer wall of the spheroidizing furnace body 1, the adjusting part 6 of the present case is installed on the outside of the spheroidizing furnace body 1, and is used to adjust and switch the loading and unloading process and the iron casting process, the injecting part 7 of the present case is installed on the adjusting part 6, and is used to automatically seal the heat in the furnace body of the spheroidizing furnace body 1, and the feeding part 8 of the present case is installed on the folding bracket 5, and is used to automatically receive the covering material.

[0044] In the present invention, in order to enable the spheroidizing furnace body 1 to perform cast iron casting in a sealed environment and to be tightly installed with the cover part 3 of the present invention, the sealing part 2 of the present invention includes a top cover 21, and a baffle 22 is fixedly connected to the bottom of the top cover 21. The baffle 22 is inserted into the inner wall of the furnace mouth of the spheroidizing furnace body 1. The baffle 22 matches the size of the furnace mouth and slides in a fitting manner to achieve the closure of the furnace mouth. The bottom of the top cover 21 is fixedly connected to a rectangular frame 1 23 and a rectangular frame 26. The rectangular frame 26 is located in the rectangular frame 1 23. The rectangular frame 1 Two slide grooves 24 are provided on both sides of the outer wall of 23, and the rectangular frame 1 23 and the rectangular frame 26 are installed for the L-shaped slider 31. Side grooves 25 are provided on both sides of the inner wall of each slide groove 24, and two slide grooves 27 are provided on both sides of the outer wall of the rectangular frame 26. An injection hole is provided in the middle of the top of the top cover 21, and an injection channel 28 is fixedly connected to the middle of the bottom of the top cover 21. Two buckle plates 29 are fixedly connected on both sides of the outer wall of the rectangular frame 23, and the buckle plates 29 have a buckle hole structure.

[0045] In order to ensure that covering materials such as perlite, carbonized rice husk, ferrosilicon slag, and graphite powder can stably cover the alloy in the furnace, the covering part 3 in this case includes two L-shaped sliders 31, the ends of the two L-shaped sliders 31 are respectively slidably connected to the inner walls of the two slide grooves 24 on the same side, and the other ends of the two L-shaped sliders 31 are respectively slidably connected to the inner walls of the slide grooves 27 corresponding to the slide grooves 24, and the ends of the two L-shaped sliders 31 are fixedly connected with sliding pins 32 on both sides of the ends of the two L-shaped sliders 31. The two L-shaped sliders 31 are respectively slidably connected to the side grooves 25 of the slide grooves 24 in which they are located through the sliding pins 32. The L-shaped sliders 31 can slide in the slide grooves 1 24 and the slide grooves 27 and flip over through the sliding pins 32. The ends of the two L-shaped sliders 31 located in the slide grooves 27 are fixedly connected with baffles 33. The baffles 33 are used to increase the shielding height to prevent the covering materials from leaking out of the slide grooves 27 when adding. A movable hole is provided on one side of the L-shaped slider 31 away from the baffle 33, and a block 34 is slidably connected in each movable hole. A spring is elastically connected between each block 34 and the inner wall of the movable hole. A support plate 35 is fixedly connected between the ends of the two L-shaped sliders 31, and the support plate 35 is used to lift and transport the covering material. The side walls of the two L-shaped sliders 31 are provided with mounting blocks 36, and the side walls of the two mounting blocks 36 are provided with through holes 37. The ear ends of the through holes 37 of each mounting block 36 are fixedly connected with mounting pieces 38. Each mounting block 36 is fixedly connected to the corresponding L-shaped slider 31 through the mounting pieces 38. A counterweight block 39 is installed on each mounting block 36. The counterweight block 39 is used to balance the L-shaped slider 31 and increase the weight of one side of the L-shaped slider 31, so that the mounting block 36 can slide downward and reset by the counterweight block 39 when there is no thrust and limit on the ground.

[0046] In this embodiment, in order to form a stable filling space in the rectangular frame 26, there are two covering parts 3 in this case. The other covering part 3 is symmetrically installed in the slide groove 1 24 and the slide groove 27 on the other side of the rectangular frame 1 23 and the rectangular frame 2 26. The two supporting plates 35 in the two covering parts 3 are attached to the inner wall of the rectangular frame 26 and to each other. Each L-shaped slider 31 is respectively connected to the corresponding buckle plate 29 through the clamping block 34. The bottom position of each slide groove 27 is higher than the bottom position of the corresponding slide groove 1 24. The four baffles 33 are respectively slidably connected to the inner walls of the four slide grooves 27. The bottom end of the injection channel 28 is located at the top of the two supporting plates 35. At the top, in order to enable the top cover 21 to automatically release the covering material after covering the furnace mouth of the spheroidizing furnace body 1, the unlocking part 4 in this case includes a connecting arm 41, and the connecting arm 41 is fixedly connected to the inner wall of the spheroidizing furnace body 1, and the end of the connecting arm 41 is integrally connected with a step surface 1 42, and the step surface 1 42 is integrally connected with a step surface 2 43, and the step surface 2 43 is fixedly connected with a retaining spring 44, and the retaining spring 44 has a certain force deformation and reset ability. There are four unlocking parts 4, and the four unlocking parts 4 correspond to four mounting blocks 36 respectively. The four step surfaces 2 43 are respectively slidably connected to the inner walls of the four through holes 37, and the four step surfaces 1 42 are respectively abutted against the bottom of the four mounting blocks 36.

[0047] It is worth noting that in order to better control the top cover 21 to approach or move away from the spheroidizing furnace body 1 and prevent people from getting burned by close contact with the spheroidizing furnace body 1, the adjusting part 6 in this case includes a hydraulic rod 61, which is installed on the top of one end of the folding bracket 5. The inner rod end of the hydraulic rod 61 is rotatably connected to a crossbeam 62, and the end of the crossbeam 62 is fixedly connected to a hanger 63. An arc groove 64 is provided at the bottom of the hanger 63. The hanger 63 is fixedly connected to the top of the top cover 21, and a grip rod 65 is fixedly connected to the side wall of the hanger 63. The arc of the arc groove 64 rotates with the hydraulic rod 61 as the axis. In order to further improve the sealing and heat preservation capacity of the spheroidizing furnace body 1 during cast iron casting, reduce Heat loss, the injection part 7 in this case includes a blocking arm 71, which is a T-shaped structure. The blocking arm 71 slides through the top of the inner wall of the hanger 63 and the arc groove 64 and is inserted into the injection hole. The bottom of the two ear ends of the blocking arm 71 are fixedly connected with a tenon plate 72. Two plate holes are provided on the top of the inner wall of the arc groove 64. The two tenon plates 72 are respectively slidably connected to the inner walls of the two plate holes. Two sliding rods 73 are fixedly connected to the top of the hanger 63. The two sliding rods 73 slide through the two ear ends of the blocking arm 71. There are tension springs 74 elastically connected between the two ear ends of the blocking arm 71 and the hanger 63. The elastic reset ability of the tension spring 74 can ensure the automatic reset effect of the blocking arm 71.

[0048] It is worth noting that in order to simplify the transportation between processes and improve the efficiency of automatic loading and transportation of covering materials, the loading part 8 of this case includes a mounting frame 81, which is fixedly mounted on the other end side wall of the folding bracket 5, and a sensor device 82 is installed on the side of the mounting frame 81 facing the spheroidizing furnace body 1 horizontally, and a storage tank 83 is installed in the mounting frame 81. Suitable covering materials are added to the storage tank 83 for storage according to actual production conditions. A material pipe 84 is connected and installed on the storage tank 83, and the material pipe 84 is equipped with a prior art D971X series electric valve. The material pipe 84 movably passes through the top edge of the folding bracket 5 and extends, and the end of the folding bracket 5 is also An arc track 85 is fixedly connected to one side, a feeding hole 86 is opened on the arc track 85, a stopper 87 is fixedly connected to the inner wall of the arc track 85, an extended end of the material pipe 84 is located between the inner walls of the arc track 85, the end of the arc track 85 away from the folding bracket 5 is aligned with the inner wall of the arc groove 64, the curvature of the arc track 85 rotates around the hydraulic rod 61, and the two side edges of the arc track 85 are aligned with the two tenon plates 72. The outer wall of the spheroidizing furnace body 1 is connected and installed with an iron flushing pipe 9, which is connected to the molten iron conveying system pipeline through a D971X-H (high temperature type) series control valve, and molten iron is flushed into the bottom of the spheroidizing furnace body 1 by a flushing method.

[0049] A method for automatically adding a ductile iron alloy into a casting process, comprising the following steps:

[0050] Step 1: The storage tank 83 is filled with perlite. When the inner rod of the hydraulic rod 61 is extended, the hanger 63 is aligned with the arc track 85 through the arc groove 64. The hanger 63 is pushed by the grip rod 65 and the top cover 21 is driven to rotate with the hydraulic rod 61 as the axis, so that the arc track 85 enters the inner wall of the arc groove 64. The two sides of the arc track 85 push the two tenon plates 72 up, so that the blocking arm 71 rises away from the injection hole. At this time, the counterweight block 39 slides downward and drives the L-shaped slider 31 to slide downward, so that the end of the L-shaped slider 31 is limited by the bottom of the inner wall of the second slide groove 27 and flips with the sliding pin 32 as the axis, thereby prompting the block 34 to be stuck in the corresponding buckle plate 29, so that the two support plates 35 are horizontal and aligned with each other to fit the lower frame opening of the closed rectangular frame 26;

[0051] Step 2: After the injection hole slides along the arc track 85 and is aligned with the feeding hole 86, the blocking arm 71 passes over the stopper 87 and forms a shield, and the infrared signal emitted by the sensor device 82 determines the distance from the hanger 63, thereby generating an electrical signal to open the electric valve on the material pipe 84, so that the perlite is discharged into the inner wall of the arc track 85 and passes through the feeding hole 86 and the injection hole, and then continues to enter the top of the two support plates 35 along the injection channel 28, realizing automatic material taking, and then the rare earth magnesium silicon iron alloy is put into the spheroidizing furnace body 1 for bottom laying;

[0052] Step 3: According to the descending height of the perlite in the storage tank 83, the loading amount in the rectangular frame 26 is judged, and the hanger 63 is rotated and reset by the grip 65 to align the enclosure 22 with the furnace mouth of the spheroidizing furnace body 1. At the same time, the arc groove 64 is separated from the arc track 85. The sensor device 82 senses that the hanger 63 is far away and then closes the electric valve. The crossbeam 62 is driven down by the contraction of the inner rod of the hydraulic rod 61, so that the enclosure 22 is plugged into the spheroidizing furnace body 1. The tension of the tension spring 74 drives the blocking arm 71 to reset and plug in the injection hole to achieve the sealing of the spheroidizing furnace body 1;

[0053] Step 4: The top cover 21 descends, driving the rectangular frame 1 23 and the rectangular frame 2 26 to descend synchronously. The retaining spring 44 first enters through the through hole 37 and squeezes the retaining block 34 to slide into the movable hole to release the connection with the buckle plate 29. When the step surface 2 43 enters the through hole 37, the step surface 1 42 abuts and pushes the mounting block 36 upward to cause the L-shaped slider 31 to rise. At this time, the end of the L-shaped slider 31 loses the limit at the bottom of the inner wall of the chute 2 27, and at the same time, it is flipped downward by the weight of the perlite and the weight of the support plate 35, and the perlite is sprinkled to cover the rare earth magnesium silicon iron alloy, which is connected to the molten iron delivery system pipeline through the iron flushing pipe 9. The control valve is adjusted to flush molten iron into the spheroidizing furnace body 1 to cast ductile iron.

[0054] Working principle: the inner rod of the hydraulic rod 61 extends to drive the hanger 63, and drives the top cover 21 to rise, so that the enclosure 22 is moved away from the furnace mouth of the spheroidizing furnace body 1, and the mounting block 36 is moved away from the ladder surface 42 and slides down by the deadweight of the counterweight block 39, so that the L-shaped slider 31 slides down. Both ends of the L-shaped slider 31 are arc structures, which can effectively reduce the contact friction with the bottom of the inner wall of the chute 1 24 and the chute 2 27. There is a height difference between the bottom of the inner wall of the chute 2 27 and the chute 1 24. When the end of the L-shaped slider 31 contacts the bottom of the inner wall of the chute 2 27 first, a resistance force is generated, and the slider rotates with the sliding pin 32 as the axis. The side groove 25 limits the lifting and lowering trajectory of the L-shaped slider 31 to avoid the problem of falling off. The L-shaped slider 31 is flipped and blocked 34 resets the alignment buckle plate 29 and fixes it through the buckle hole, so that the support plate 35 returns to a horizontal state. When the arc groove 64 rises and aligns with the arc track 85, the grip 65 is used to remotely control the hanger 63 to rotate with the hydraulic rod 61 as the axis, so that the arc groove 64 slides into the arc track 85 and performs a curved motion with the same arc. The ends of the edges on both sides of the arc track 85 adopt an arc surface structure, which can reduce friction after contacting the tenon plate 72. The oblique edge of the tenon plate 72 is squeezed to cause the blocking arm 71 to rise and open the injection hole. After passing the block 87, the blocking arm 71 will form a blocking structure to prevent the covering material from splashing from the arc track 85 or crossing the feeding hole 86 to cause waste during subsequent feeding.

[0055] The sensing device 82 adopts the GP2D12 infrared distance sensor, which is based on the principle of triangulation to determine the distance of an object. It emits a beam of infrared light. When the infrared light hits the surface of the object, it will be reflected. The reflected light will be received by the receiving element of the sensor. When the hanger 63 in this case approaches the sensing device 82, it will generate an electrical signal through the reflection of the infrared light, and then open the electric valve to make the covering material roll out from the storage tank 83 along the material pipe 84. The covering material enters the feeding hole 86 along the inner wall of the arc track 85 and falls through the injection hole. The injection channel 28 guides the covering material to fall and prevents the covering material from splashing and rebounding. The covering material falls onto the two supporting plates 35 for receiving, and the four baffles 33 on both sides block a certain height in the slide slot 27 to prevent the covering material from rolling out of the slot and being wasted. After the loading is completed, the hanger 63 is pushed back to the top of the furnace mouth of the spheroidizing furnace body 1 by the grip 65, so as to facilitate the transportation of the covering material. According to the actual production needs, the appropriate rare earth magnesium silicon iron alloy is put into the spheroidizing furnace body 1. When the arc slot 64 is separated from the arc track 85, the tension spring 74 drives the blocking arm 71 to reset and block the injection hole. The sensor device 82 determines that the hanger 63 is away and closes the electric valve through an electrical signal, so as to facilitate the work of automatic loading and unloading.

[0056] The inner rod of the hydraulic rod 61 contracts, causing the top cover 21 to descend, and the enclosure 22 to re-enter the spheroidizing furnace body 1. The retaining spring 44 abuts against the buckle plate 29 through elastic deformation, and squeezes the buckle hole to cause the clamping block 34 to slide into the movable hole to release the clamping connection. The step surface 42 abuts against the mounting block 36 and pushes the L-shaped slider 31 to rise. The support plate 35 is flipped downward at this time, and the transported covering material falls on the rare earth magnesium silicon iron alloy. At this time, the covering material is completely placed in a sealed environment, which effectively avoids the waste and loss caused by the covering material splashing to the outside of the spheroidizing furnace body 1, and can also make the covering material as close to the rare earth magnesium silicon iron alloy as possible for covering. Finally, molten iron is punched into the iron punching pipe 9 for ductile iron processing, which can form a certain insulation layer on the surface of the molten iron to reduce the heat loss and oxidation of the molten iron. Injecting molten iron from the bottom can more quickly contact and mix the molten iron with the rare earth magnesium silicon iron alloy. After the molten iron is injected from the bottom, it will tumble upward, which is beneficial to increase the speed and uniformity of the spheroidization reaction, thereby possibly improving the quality and efficiency of the spheroidization treatment. At the same time, under the conditions of double sealing of the enclosure 22 and the blocking arm 71, the oxidation and temperature loss of the molten iron are reduced. Moreover, the molten iron enters from the bottom, has the least contact with the air, has the least possibility of oxidation, and has relatively small heat loss.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. An automatic adding device for ductile iron casting alloy by injection molding, characterized in that: include: Spheroidizing furnace body (1); A sealing portion (2) is arranged in the furnace opening of the spheroidizing furnace body (1) and is used to open and close the furnace opening of the spheroidizing furnace body (1); A covering portion (3) is installed in the sealing portion (2) and is used for automatically filling and covering the alloy material in the furnace; An unlocking portion (4) is mounted on the inner wall of the spheroidizing furnace body (1) and is used to unlock the structure of the covering portion (3) for injection; A folding bracket (5) mounted on the outer wall of the spheroidizing furnace body (1); An adjustment part (6) is installed outside the spheroidizing furnace body (1) and is used for adjusting and switching the loading and unloading process and the iron casting process; A material injection portion (7) installed on the regulating portion (6) and used for automatically sealing the heat inside the spheroidizing furnace body; A feeding portion (8) mounted on the folding bracket (5) and used for automatically receiving covering materials; The sealing portion (2) comprises a top cover (21), the bottom of the top cover (21) is fixedly connected to a baffle (22), the baffle (22) is inserted into the inner wall of the furnace mouth of the spheroidizing furnace body (1), the bottom of the top cover (21) is fixedly connected to a rectangular frame 1 (23) and a rectangular frame 2 (26), the rectangular frame 2 (26) is located in the rectangular frame 1 (23), two chute 1s (24) are provided on both sides of the outer wall of the rectangular frame 1 (23), and side grooves (25) are provided on both sides of the inner wall of each chute 1 (24), two chute 2s (27) are provided on both sides of the outer wall of the rectangular frame 2 (26), a material injection hole is provided in the middle of the top of the top cover (21), a material injection channel (28) is fixedly connected in the middle of the bottom of the top cover (21), and two buckle plates (29) are fixedly connected on both sides of the outer wall of the rectangular frame 1 (23); The covering portion (3) comprises two L-shaped sliders (31), the ends of the two L-shaped sliders (31) are respectively slidably connected to the inner walls of two slide grooves (24) on the same side, the other ends of the two L-shaped sliders (31) are respectively slidably connected to the inner walls of the second slide groove (27) corresponding to the first slide groove (24), the ends of the two L-shaped sliders (31) are fixedly connected to sliding pins (32) on both sides, the two L-shaped sliders (31) are respectively slidably connected to the side grooves (25) of the first slide groove (24) where they are located through the sliding pins (32), the ends of the two L-shaped sliders (31) located in the second slide groove (27) are fixedly connected to baffles (33), and the ends of the two L-shaped sliders (31) away from the baffles (33) are fixedly connected to the inner walls of the second slide groove (27) and the second slide groove (27 ... A movable hole is provided on one side, a clamping block (34) is slidably connected in each movable hole, a spring is elastically connected between each clamping block (34) and the inner wall of the movable hole, a support plate (35) is fixedly connected between the ends of the two L-shaped sliders (31), a mounting block (36) is provided on the side walls of the two L-shaped sliders (31), a through hole (37) is provided on the side walls of the two mounting blocks (36), a mounting plate (38) is fixedly connected to the ear end of the through hole (37) of each mounting block (36), each mounting block (36) is fixedly connected to the corresponding L-shaped slider (31) via the mounting plate (38), and a counterweight block (39) is installed on each mounting block (36); There are two covering parts (3), and the other covering part (3) is symmetrically mounted in the slide groove 1 (24) and the slide groove 2 (27) on the other side of the rectangular frame 1 (23) and the rectangular frame 2 (26). The two support plates (35) in the two covering parts (3) are fitted on the inner wall of the rectangular frame 2 (26) and fit each other. Each L-shaped slider (31) is respectively clamped on the corresponding buckle plate (29) through a clamping block (34). The bottom position of each slide groove 2 (27) is higher than the bottom position of the corresponding slide groove 1 (24). The four baffles (33) are respectively slidably connected to the inner walls of the four slide grooves 2 (27); The unlocking portion (4) comprises a connecting arm (41), the connecting arm (41) is fixedly connected to the inner wall of the spheroidizing furnace body (1), the end of the connecting arm (41) is integrally connected to a step surface 1 (42), the step surface 1 (42) is integrally connected to a step surface 2 (43), the step surface 2 (43) is fixedly connected to a retaining spring (44), the unlocking portion (4) is four in number, the four unlocking portions (4) respectively correspond to four mounting blocks (36), the four step surfaces 2 (43) are respectively slidably connected to the inner walls of four through holes (37), and the four step surfaces 1 (42) respectively abut against the bottoms of four mounting blocks (36); The adjusting portion (6) comprises a hydraulic rod (61), the hydraulic rod (61) being mounted on the top of one end of the folding bracket (5), the inner rod end of the hydraulic rod (61) being rotatably connected to a cross beam (62), the end of the cross beam (62) being fixedly connected to a hanger (63), the bottom of the hanger (63) being provided with an arc groove (64), the hanger (63) being fixedly connected to the top of the top cover (21), the side wall of the hanger (63) being fixedly connected to a gripping rod (65), and the arc of the arc groove (64) rotating around the hydraulic rod (61) as the axis; The injection part (7) includes a blocking arm (71), which is a T-shaped structure. The blocking arm (71) slides through the top of the inner wall of the hanger (63) and the arc groove (64) and is inserted into the injection hole. The bottom of the two ear ends of the blocking arm (71) are fixedly connected with a tenon plate (72). The top of the inner wall of the arc groove (64) is provided with two plate holes. The two tenon plates (72) are respectively slidably connected to the inner walls of the two plate holes. The top of the hanger (63) is fixedly connected with two sliding rods (73). The two sliding rods (73) slide through the two ear ends of the blocking arm (71). Tension springs (74) are elastically connected between the two ear ends of the blocking arm (71) and the hanger (63). The feeding part (8) comprises a mounting frame (81), the mounting frame (81) is fixedly mounted on the other end side wall of the folding bracket (5), a sensor device (82) is mounted on the side of the mounting frame (81) facing horizontally toward the spheroidizing furnace body (1), a material storage tank (83) is mounted inside the mounting frame (81), a material pipe (84) is connected and mounted on the material storage tank (83), the material pipe (84) movably passes through the top edge of the folding bracket (5) and extends, an arc track (85) is fixedly connected to the other side of the end of the folding bracket (5), a feeding hole (86) is opened on the arc track (85), and a stopper (87) is fixedly connected to the inner wall of the arc track (85); The extended end of the material tube (84) is located between the inner walls of the arc track (85), the end of the arc track (85) away from the folding bracket (5) is aligned with the inner wall of the arc groove (64), the arc of the arc track (85) rotates around the hydraulic rod (61) as the axis, and the two side edges of the arc track (85) are aligned with the two tenon plates (72).

2. The automatic adding device for ductile iron casting alloy by injection molding according to claim 1, characterized in that: The bottom end of the injection channel (28) is located above the tops of the two support plates (35).

3. The automatic adding device for ductile iron casting alloy by injection molding according to claim 2, characterized in that: An iron punching pipe (9) is installed in communication with the outer wall of the spheroidizing furnace body (1).

4. A method for an automatic adding device for ductile iron casting alloy by punching method, according to claim 3, characterized in that: The following steps are involved: Step 1: The storage tank (83) is filled with perlite. When the inner rod of the hydraulic rod (61) is extended, the hanger (63) is aligned with the arc track (85) through the arc groove (64). The hanger (63) is pushed by the gripping rod (65) and the top cover (21) is driven to rotate around the hydraulic rod (61), so that the arc track (85) enters the inner wall of the arc groove (64), and the two sides of the arc track (85) are pushed against and pushed up by the two tenon plates (72). , so that the blocking arm (71) rises and moves away from the injection hole, at which time the counterweight (39) slides downward and drives the L-shaped slider (31) to slide downward, causing the end of the L-shaped slider (31) to be limited by the bottom of the inner wall of the second slide groove (27) and to flip around the sliding pin (32) as the axis, thereby causing the clamping block (34) to be clamped into the corresponding buckle plate (29), so that the two support plates (35) are horizontal and aligned with each other to fit the lower frame opening of the second closed rectangular frame (26); Step 2: When the injection hole slides along the arc track (85) and is aligned with the feeding hole (86), the blocking arm (71) passes over the stopper (87) and forms a shield, and the distance from the hanger (63) is determined by the infrared signal emitted by the sensor device (82), thereby generating an electrical signal to open the electric valve on the material pipe (84), so that the perlite is discharged into the inner wall of the arc track (85) and passes through the feeding hole (86) and the injection hole, and then continues to enter the top of the two support plates (35) along the injection channel (28), so as to realize automatic material removal, and then the rare earth magnesium silicon iron alloy is put into the spheroidizing furnace body (1) for bottom laying; Step 3: The amount of material loaded in the second rectangular frame (26) is determined according to the height of the perlite falling in the storage tank (83), and the hanger (63) is rotated and reset by the gripping rod (65), so that the enclosure (22) is aligned with the furnace opening of the spheroidizing furnace body (1). At the same time, the arc groove (64) is separated from the arc track (85). After the sensor device (82) senses that the hanger (63) is moved away, the electric valve is closed, and the crossbeam (62) is driven down by the contraction of the inner rod of the hydraulic rod (61), so that the enclosure (22) is plugged into the spheroidizing furnace body (1). The tension of the tension spring (74) drives the blocking arm (71) to reset and plug into the injection hole, thereby achieving the sealing of the spheroidizing furnace body (1); Step 4: The top cover (21) descends, driving the first rectangular frame (23) and the second rectangular frame (26) to descend synchronously. The retaining spring (44) first enters through the through hole (37) and squeezes the retaining block (34) to slide into the movable hole to release the connection with the buckle plate (29). When the second step surface (43) enters the through hole (37), the first step surface (42) abuts and pushes the mounting block (36) upward to cause the L-shaped slider (31) to rise. At this time, the end of the L-shaped slider (31) loses the limit of the bottom of the inner wall of the second chute (27), and at the same time, it is flipped downward by the weight of the perlite and the weight of the support plate (35), and the perlite is sprinkled to cover the rare earth magnesium silicon iron alloy, and is connected to the molten iron conveying system pipeline through the iron flushing pipe (9). The control valve is adjusted to flush the molten iron into the spheroidizing furnace body (1) to cast ductile iron.

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