Casting holding furnace lifting self-locking device based on furnace body inclination compensation structure

Abstract

The invention relates to the technical field of metal casting, and discloses a casting holding furnace lifting self-locking device based on a furnace body inclination compensation structure, which comprises a support frame, and a closed cavity with an air inlet and an air outlet is mounted at the upper end of an upper side mounting plate; a first sleeve plate and a second sleeve plate are sequentially and jointly arranged on the outer wall of each front guide column and the outer wall of each rear guide column in a sliding and sleeving mode in the vertical direction, a supporting plate is arranged between the left first sleeve plate and the right first sleeve plate, and a heat preservation furnace is arranged between the left second sleeve plate and the right second sleeve plate. The casting holding furnace lifting self-locking device based on the furnace body inclination compensation structure can effectively solve the problems that in the prior art, a low-pressure casting machine is difficult to achieve the effect of holding furnace angle inclination adjustment, and the risk of additional stress and abrasion caused by furnace body inclination exists; the problems that in the casting process, the inclined heat preservation furnace lacks a reliable self-locking mechanism, a furnace body deviates in the casting process, gaps are likely to be formed in cooperation of a liquid rising pipe and an upper mold and a lower mold in the lifting and tilting angle period of the heat preservation furnace, and liquid leakage or unstable casting pressure is caused are solved.

Description

Technical Field

[0001] This invention relates to the field of metal casting technology, and specifically to a self-locking device for lifting a casting holding furnace based on a furnace body tilt compensation structure. Background Technology

[0002] As a core piece of equipment for metal smelting and heat preservation, the production and operation of a casting holding furnace highly depends on a stable and reliable furnace tilting and lifting locking mechanism. Existing tilting holding furnaces require a lifting mechanism to raise and tilt the furnace body when pouring molten metal to the casting station. During this process, the furnace body needs a robust self-locking function to prevent accidents such as falls or slippage during tilting or sudden events. Traditional holding furnace lifting self-locking devices mostly employ rigid positioning pins or fixed latches.

[0003] To address this issue, this application designs a self-locking device for lifting a casting holding furnace based on a furnace body tilt compensation structure. Existing low-pressure casting machines mostly use traditional holding furnaces in conjunction with vertical casting. For some irregularly shaped castings or situations requiring a specific casting angle, the holding furnace is difficult to achieve the effect of angle tilt adjustment. Furthermore, after the holding furnace is lifted and tilted, there is a risk of additional stress and wear due to the tilt of the furnace body. Moreover, the tilted holding furnace lacks a reliable self-locking mechanism, which can cause the furnace body to shift during the casting process, affecting the quality of the castings and the consistency of the casting. In addition, during the lifting and tilting of the holding furnace, gaps can easily appear between the riser pipe and the upper and lower molds, leading to leakage or unstable casting pressure. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a self-locking lifting device for a casting holding furnace based on a furnace body tilt compensation structure. This device effectively solves the problems in existing technologies, such as the difficulty of adjusting the angle of the holding furnace in low-pressure casting machines, the risk of additional stress and wear due to furnace body tilt, and the lack of a reliable self-locking mechanism after tilting the holding furnace, which can lead to furnace body displacement during casting. During lifting and tilting, gaps can easily appear between the riser pipe and the upper and lower molds, resulting in leakage or unstable casting pressure.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a self-locking lifting device for a casting holding furnace based on a furnace body tilt compensation structure, comprising:

[0007] The support frame consists of several rectangular guide columns evenly distributed and upper and lower mounting plates. The upper end of the upper mounting plate is equipped with a closed cavity with an air inlet and an exhaust outlet. The outer walls of each pair of front and rear guide columns are slidably fitted with a first sleeve plate and a second sleeve plate in the vertical direction. A support plate is set between the two first sleeve plates on the left and right sides, and a heat preservation furnace is set between the two second sleeve plates on the left and right sides. An angle adjustment part is set on both the first sleeve plate and the second sleeve plate. The support frame and the heat preservation furnace are both equipped with a furnace body centering part.

[0008] The furnace has a crucible installed on its inner wall, a liquid riser pipe installed at the top of the furnace via a cover plate, and a lower mold installed at the top of the cover plate.

[0009] The angle adjustment unit includes a support shaft installed at both ends of the support plate. The support shaft rotates through the corresponding sleeve plate one. A mating plate fixedly fitted on the outer wall of the heat preservation furnace is provided between the two sleeve plates two. Insertion holes are provided at both ends of the mating plate. Limiting sliding holes are provided at the end of the sleeve plate two facing the mating plate. An angle adjustment group is provided on both the sleeve plate one and the sleeve plate two on the left and right sides.

[0010] Furthermore, the furnace body includes symmetrically mounted slide rails on the upper part of the lower mounting plate, with a support plate slidably mounted on both slide rails. The inner wall of the support plate is movably attached to the outer wall of the bottom end of the heat preservation furnace, and the upper part of the support plate is symmetrically provided with alignment grooves. The support frame and the heat preservation furnace are jointly provided with an alignment assembly.

[0011] Furthermore, the angle adjustment assembly includes a slide block slidably mounted on the side wall of the sleeve plate two away from the heat preservation furnace. The end of the slide block away from the heat preservation furnace has a guide sliding hole, and a sliding sleeve is slidably installed on the inner wall of the guide sliding hole. An electromagnet is embedded in the end of the sliding sleeve away from the heat preservation furnace and is connected to a docking shaft through a tension spring. The docking shaft consists of a round rod and a magnetic limiting plate. The outer wall of the round rod of the docking shaft is slidably connected to the inner wall of the sliding sleeve. A hydraulic push rod two is mounted on the rear side of the end of the sleeve plate two away from the heat preservation furnace through a mounting seat. The telescopic end of the hydraulic push rod two is fixedly connected to the slide block.

[0012] Furthermore, the angle adjustment assembly also includes a bearing seat installed on the front side of the end of the second sleeve plate away from the heat preservation furnace. A sliding rod is installed at the front end of the slide block and is slidably installed on the bearing seat. A locking device is also installed on the front side of the bearing seat at the end of the second sleeve plate away from the heat preservation furnace. A locking device is also installed at the end of the first sleeve plate away from the support plate. Several locking devices are slidably sleeved on the corresponding support shaft and sliding rod respectively.

[0013] Furthermore, the middle assembly includes a baffle one installed on the rear side of the upper end of the lower mounting plate, a receiving groove is provided on the front side of the upper end of the lower mounting plate, a baffle two is slidably installed on the inner wall of the receiving groove by a compression spring, a matching magnet is embedded at the lower end of the baffle two, and an electromagnet two is embedded on the inner wall of the bottom end of the receiving groove corresponding to the matching magnet.

[0014] Furthermore, the centering assembly also includes symmetrically installed extension plates on the outer wall of the heat preservation furnace, with alignment inserts installed at the lower end of the extension plates corresponding to the alignment slots.

[0015] Furthermore, several hydraulic push rods are installed through the upper end of the upper mounting plate. The telescopic ends of the hydraulic push rods are respectively fixedly connected to the corresponding sleeve plate. A connecting bracket is installed on the upper end of the sleeve plate. The connecting bracket consists of a waist-shaped sleeve plate and two sleeves at the front and rear, and the connecting bracket is slidably sleeved on the outer wall of two adjacent guide posts.

[0016] Furthermore, an upper mold is installed at the lower end of the support plate. The upper ends of the support plate and the upper mold are both provided with guide grooves. A top plate is connected to the upper end of the support plate by a compression spring. The top plate is composed of a rectangular plate and vertical rods. The vertical rods are slidably connected to the inner wall of the guide groove. Several top rods are installed at the lower end of the rectangular plate of the top plate. The top rods slide through the upper mold.

[0017] Furthermore, the upper part has several insert rods installed at its lower end, and these insert rods are evenly distributed in a circle. The lower part has slots corresponding to these insert rods at its upper end.

[0018] Furthermore, an air cushion is slidably installed on the inner wall of the sealed cavity. The air cushion consists of a piston plate and a piston rod, with the piston rod sliding through the upper mounting plate.

[0019] The technical solution provided by this invention has the following advantages compared with the prior art:

[0020] This invention provides a self-locking lifting device for a casting holding furnace based on a furnace body tilt compensation structure. During the furnace tilt adjustment phase, several hydraulic push rods control the left and right sleeve plates to move upwards synchronously to a suitable height. At this time, the support plate will drive the upper mold, top plate, and push rod to move upwards synchronously, and the mating plate will also drive the holding furnace and lower mold to move upwards synchronously. When the holding furnace is far away from the support plate, the two hydraulic push rods control the corresponding sliding blocks to move forward or backward to either side. At this time, the holding furnace will drive the upper and lower molds to rotate around the support axis synchronously at a suitable angle, thereby achieving the effect of the holding furnace rotating around the support axis at a suitable angle. By using the method of the holding furnace driving the upper and lower molds to rotate around the support axis synchronously, the tilt stability of the holding furnace is ensured, while avoiding the risk of additional stress and wear caused by the tilt of the holding furnace after it is lifted and tilted. In addition, the connection strength between the upper and lower molds is increased by several insert rods, which can also avoid the problem of leakage or unstable pouring pressure caused by gaps in the liquid riser pipe, upper mold, and lower mold during the lifting and tilting of the holding furnace.

[0021] During the locking phase, multiple locking devices can be controlled to start working. These devices will then lock and fix the corresponding support shaft and slide rod respectively. At this time, the support plate cannot rotate around the support shaft, and the slide rod cannot slide along the bearing seat. This achieves the effect of fixing the angle of the support plate and mating plate. The double locking structure ensures reliable locking of the support shaft and slide rod, avoiding changes in tilt angle caused by the weight of the holding furnace or pressure fluctuations during the casting process. This prevents the furnace body from shifting during the casting process, affecting the quality of the casting and the consistency of the casting. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the multi-angle three-dimensional structure in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of a partial three-dimensional cross-section of the heat preservation furnace, the lower mold, and the mating plate in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the three-dimensional separation of the heat preservation furnace, the lower mold, and the support plate in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the three-dimensional separation of the support frame and furnace body in the middle of an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the three-dimensional separation of the support frame, the enclosed cavity, and the air cushion in an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the three-dimensional separation of the sleeve plate, support plate, and top plate in an embodiment of the present invention;

[0030] Figure 8 This is a three-dimensional structural diagram showing the separation of sleeve one, connecting bracket, sleeve two, and angle adjustment group in an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the three-dimensional separation of the angle adjustment group in an embodiment of the present invention;

[0032] Figure 10This is a three-dimensional structural diagram of the upper part and the insertion rod in an embodiment of the present invention.

[0033] The labels in the diagram represent: 1. Support frame; 11. Hydraulic push rod one; 12. Connecting bracket; 2. Enclosed cavity; 21. Air cushion; 3. Sleeve one; 4. Support plate; 41. Upper mold; 411. Insert rod; 42. Top plate; 43. Push rod; 5. Sleeve two; 6. Insulation furnace; 61. Crucible; 62. Lifting pipe; 63. Lower mold; 7. Angle adjustment part; 71. Support shaft; 72. Mating plate; 73. Limiting sliding hole; 74. Angle 741. Degree Adjustment Group; 742. Sliding Base; 743. Sliding Sleeve; 744. Connecting Shaft; 745. Hydraulic Push Rod II; 746. Bearing Seat; 747. Sliding Rod; 748. Locking Device; 749. Electromagnet I; 80. Furnace Body Centering Section; 81. Slide Rail; 82. Support Plate; 83. Centering Group; 831. Baffle I; 832. Baffle II; 833. Matching Magnet; 834. Electromagnet II; 835. Extension Plate; 836. Alignment Insert Plate. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] The present invention will be further described below with reference to embodiments.

[0036] Example:

[0037] Please see Figures 1-10 This invention provides a technical solution: a self-locking lifting device for a casting holding furnace based on a furnace body tilt compensation structure, comprising:

[0038] The support frame 1 consists of several rectangular guide columns evenly distributed and two mounting plates. The upper end of the upper mounting plate is equipped with a closed cavity 2 with an air inlet and an exhaust outlet. On the outer wall of each pair of front and rear guide columns, a first sleeve plate 3 and a second sleeve plate 5 are slidably mounted together in the vertical direction. A support plate 4 is set between the two first sleeve plates 3 on the left and right sides. A heat preservation furnace 6 is set between the two second sleeve plates 5 on the left and right sides. An angle adjustment part 7 is set on both the first sleeve plate 3 and the second sleeve plate 5. A furnace body centering part 8 is set on both the support frame 1 and the heat preservation furnace 6.

[0039] Among them, a crucible 61 is installed on the inner wall of the heat preservation furnace 6, and a gas supply pipe is connected to the heat preservation furnace 6 and the crucible 61. A liquid riser 62 is installed at the upper end of the heat preservation furnace 6 through a cover plate, and a lower mold 63 is installed at the upper end of the cover plate.

[0040] The angle adjustment unit 7 includes a support shaft 71 installed at both ends of the support plate 4. The support shaft 71 rotates through the corresponding sleeve plate 3. A mating plate 72 is fixedly sleeved on the outer wall of the heat preservation furnace 6 between the two sleeve plates 5. The mating plate 72 has insertion holes at both ends and the upper side of both ends of the mating plate 72 is chamfered. A limiting sliding hole 73 is opened at the end of the sleeve plate 5 facing the mating plate 72. The limiting sliding hole 73 is arc-shaped. An angle adjustment group 74 is provided on both the sleeve plate 3 and the sleeve plate 5 on the left and right sides.

[0041] The furnace body centering section 8 includes slide rails 81 symmetrically installed on the upper part of the lower mounting plate. Support plates 82 are slidably installed on the two slide rails 81. The support plates 82 have a ring structure. The inner wall of the support plates 82 is movably attached to the outer wall of the bottom end of the heat preservation furnace 6. The upper end of the support plates 82 is symmetrically provided with alignment grooves. The alignment grooves are arc-shaped. The support frame 1 and the heat preservation furnace 6 are jointly provided with centering assembly 83.

[0042] The angle adjustment group 74 includes a slide block 741 that is slidably mounted on the side wall of the end of the sleeve plate 2 5 away from the heat preservation furnace 6. The slide block 741 has a U-shaped structure. A guide sliding hole is opened at the end of the slide block 741 away from the heat preservation furnace 6. A sliding sleeve 742 is slidably installed on the inner wall of the guide sliding hole. An electromagnet 748 is embedded at the end of the sliding sleeve 742 away from the heat preservation furnace 6 and is connected to a docking shaft 743 through a tension spring. The docking shaft 743 is composed of a round rod and a magnetic limiting plate. The outer wall of the round rod of the docking shaft 743 is slidably connected to the inner wall of the sliding sleeve 742. A hydraulic push rod 744 is mounted on the rear side of the end of the sleeve plate 2 5 away from the heat preservation furnace 6 through a mounting seat. The telescopic end of the hydraulic push rod 744 is fixedly connected to the slide block 741.

[0043] The angle adjustment group 74 also includes a bearing seat 745 installed on the front side of the end of the second sleeve plate 5 away from the heat preservation furnace 6. A slide rod 746 is installed at the front end of the slide block 741 and is slidably installed on the bearing seat 745. A locking device 747 is also installed on the front side of the bearing seat 745 at the end of the second sleeve plate 5 away from the heat preservation furnace 6. A locking device 747 is also installed at the end of the first sleeve plate 3 away from the support plate 4. Several locking devices 747 are slidably sleeved on the corresponding support shaft 71 and slide rod 746 respectively.

[0044] The centering assembly 83 includes a baffle 831 mounted on the rear side of the upper end of the lower mounting plate. A receiving groove is provided on the front side of the upper end of the lower mounting plate. A baffle 832 is slidably mounted on the inner wall of the receiving groove via a compression spring. The baffle 831, the baffle 832 and the receiving groove are all arc-shaped. A matching magnet 833 is embedded at the lower end of the baffle 832. An electromagnet 834 is embedded on the inner wall of the bottom end of the receiving groove corresponding to the matching magnet 833.

[0045] The centering assembly 83 also includes an extension plate 835 symmetrically installed on the outer wall of the heat preservation furnace 6. The lower end of the extension plate 835 is equipped with an alignment insert plate 836 corresponding to the alignment groove. Both the extension plate 835 and the alignment insert plate 836 are arc-shaped structures.

[0046] Several hydraulic push rods 11 are installed through the upper end of the upper mounting plate. The telescopic ends of the hydraulic push rods 11 are respectively fixedly connected to the corresponding sleeve plate 3. A connecting bracket 12 is installed on the upper end of the sleeve plate 2 5. The connecting bracket 12 is composed of a waist-shaped sleeve plate and two sleeves at the front and rear. The connecting bracket 12 is slidably sleeved on the outer wall of two adjacent guide posts.

[0047] The upper mold 41 is installed at the lower end of the support plate 4. The upper ends of the support plate 4 and the upper mold 41 are both provided with guide grooves. The upper end of the support plate 4 is connected to the top plate 42 by a compression spring. The top plate 42 is composed of a rectangular plate and a vertical rod. The vertical rod is slidably connected to the inner wall of the guide groove. Several top rods 43 are installed at the lower end of the rectangular plate of the top plate 42. The several rods are evenly distributed in a circle. The top rods 43 slide through the upper mold 41.

[0048] The upper type 41 has several insertion rods 411 installed at its lower end, and the insertion rods 411 are evenly distributed in a circle. The lower type 63 has slots corresponding to the insertion rods 411 at its upper end.

[0049] An air cushion 21 is slidably installed on the inner wall of the closed cavity 2. The air cushion 21 consists of a piston plate and a piston rod, with the piston rod sliding through the upper mounting plate.

[0050] In practice:

[0051] First, several hydraulic push rods 11 in this application are used to drive the two left and right sleeve plates 3 and the two left and right sleeve plates 5 to move up and down in a synchronous manner, thereby achieving the effect of the support plate 4, the mating plate 72 and the holding furnace 6 moving up and down in a synchronous manner. The cooperation of the closed cavity 2, the air cushion 21 and the top plate 42 can help to remove the castings that have been cast. The angle adjustment part 7 is used to adjust the tilt angle of the holding furnace 6, the lower mold 63 and the upper mold 41 to achieve the effect of tilting the casting of complex castings with cavities. The furnace body centering part 8 is used to assist in the placement and centering of the holding furnace 6, as well as the subsequent replacement and maintenance of the holding furnace 6.

[0052] In the initial state, both sleeve plates 3 and 5 are located on the upper side of the guide post. The support plate 4 is horizontally aligned with the two sleeve plates 3. The mating plate 72 is misaligned and staggered with the two sleeve plates 5. Both electromagnets 748 are in a stopped state. At this time, the upper mold 41 and the lower mold 63 are far apart from each other. The support plate 82 is slidably installed on the two slide rails 81. The heat preservation furnace 6 is placed on the support plate 82, and the inner walls of the baffles 831 and 832 are movably attached to the support plate. The outer wall of 82 is used to limit the movement of the electromagnet 834. At this time, the electromagnet 834 is in a stopped working state. The two left and right alignment plates 836 are inserted into the corresponding alignment slots, and several locking devices 747 are in an unlocked state, and maintain clearance fit with the corresponding support shaft 71 and slide rod 746 respectively. It should be noted that a sufficient amount of molten aluminum alloy raw material is injected into the crucible 61. The holding furnace 6 is sealed by the cover plate, and the heating system of the holding furnace 6 is started at the same time to stabilize the temperature of the molten metal in the crucible 61 at the required stable level.

[0053] During the mold-forming stage, before the casting process begins, several hydraulic push rods 11 control the left and right sleeve plates 3 to move downwards synchronously. The left and right sleeve plates 3, through their respective connecting brackets 12, drive their corresponding sleeve plates 5 to move downwards synchronously. During this process, the support plate 4 drives the top plate 42, push rod 43, and upper mold 41 to move downwards synchronously. The left and right sleeve plates 5 also drive their corresponding angle adjustment groups 74 to move downwards synchronously. When the left and right mating shafts 743 move downwards synchronously with their corresponding sleeve plates 72 to the mating plate 72, both shafts 743 will be subjected to the squeezing force of the chamfered structures on the upper sides of the mating plate 72, causing them to move away from the holding furnace 6 to avoid the pressure. This continues until the left and right mating shafts 743 continue to move downwards synchronously with their corresponding sleeve plates 75 to the insertion hole. Under the action of the tension spring, the left and right mating shafts... Shaft 743 will move synchronously towards the side closer to the holding furnace 6 and be inserted into the corresponding insertion holes, thereby achieving the effect of docking the left and right sleeve plates 5 and the mating plate 72. At this time, the left and right sleeve plates 5 and the mating plate 72 will change from an misaligned and staggered state to a horizontally aligned state. Under the connection of the left and right connecting brackets 12, the left and right sleeve plates 3 can move up and down synchronously with the left and right sleeve plates 5. In addition, during the docking of the left and right sleeve plates 5 and the mating plate 72, the upper mold 41 will also drive several insertion rods 411 to move down synchronously. Several insertion rods 411 will be inserted into the corresponding slots on the lower mold 63. The upper mold 41 will also gradually move closer to the lower mold 63 to dock, thereby achieving the effect of rapid docking of the upper mold 41 and the lower mold 63. At this time, the outer sides of the upper mold 41 and the lower mold 63 are in a sealed and fitted state, and a casting cavity is left in the middle.

[0054] It should be noted that both the upper mold 41 and the lower mold 63 in this application are detachable and can be freely replaced to adapt to casting cavities with simple structures and casting cavities with complex structures, respectively corresponding to conventional vertical casting and inclined casting methods. If the conventional vertical casting method is adopted, several locking devices 747 can be controlled to start working first. The locking devices 747 will lock and fix the corresponding support shaft 71 and slide rod 746 respectively. At this time, the support plate 4 cannot rotate around the support shaft 71, and the slide rod 746 cannot slide along the bearing seat 745, thereby achieving the effect of fixing the angle of the support plate 4 and the mating plate 72, preventing angular displacement, and ensuring the stability of the casting process. It should be noted that the locking device 747 is prior art and will not be described in detail here.

[0055] During the low-pressure casting stage, after the positions and angles of the support plate 4 and the mating plate 72 are fixed, compressed air can be introduced through the gas supply pipe above the liquid metal in the holding furnace 6. The gas pressure acts on the surface of the liquid metal, causing it to rise along the riser pipe 62. It then enters the internal cavities of the upper mold 41 and lower mold 63 through the casting system within the lower mold 63, gradually filling the mold. The casting pressure remains constant until the liquid metal completely solidifies within the cavity, forming a casting with a shape consistent with the cavity. Then, the compressed air in the holding furnace 6 is discharged, and the unsolidified liquid in the riser pipe 62... The molten metal will flow back into the crucible 61. Then, several locking devices 747 will stop working. The locking devices 747 will again maintain clearance fit with the corresponding support shaft 71 and slide rod 746 to release the angle locking effect. After that, the two electromagnets 748 on the left and right need to be controlled to start working. Since the electromagnets 748 and the magnetic limit plates on the corresponding docking shafts 743 are magnetically repelled, the two docking shafts 743 on the left and right will move away from the holding furnace 6 and withdraw from the corresponding insertion hole, thereby achieving the effect of quickly releasing the docking of the two sleeve plates 5 and the mating plate 72.

[0056] During the mold opening and part removal stage, after the left and right sleeve plates 25 and mating plate 72 are disconnected, several hydraulic push rods 11 control the left and right sleeve plates 3 to move upward synchronously. The left and right sleeve plates 3 will then drive the corresponding sleeve plates 25 to move upward synchronously through the corresponding connecting brackets 12. At this time, the left and right sleeve plates 3 will also drive the support plate 4 to move upward synchronously through the two support shafts 71. The support plate 4 will drive the upper mold 41, top plate 42 and push rod 43 to move upward synchronously. It should be noted that the cast part will adhere to the bottom of the upper mold 41 and move upward synchronously. Therefore, it is also necessary to control the ventilation of the closed cavity 2, thereby controlling the air cushion 21 to extend downward. When the top plate 42 moves upward, After contacting the piston rod of the air cushion 21, the top plate 42 will be pushed by the air cushion 21 and move towards the upper end of the support plate 4. At this time, the top plate 42 will drive several push rods 43 to move towards the support plate 4 synchronously until the lower ends of several push rods 43 extend out of the lower end of the upper mold 41, thereby achieving the effect of ejecting the castings attached to the bottom of the upper mold 41. The fallen castings can be received and transferred by the external automatic receiving tray. During this period, when the left and right docking shafts 743 move upward synchronously with the corresponding sleeve plate 2 5 to disengage from the mating plate 72, the left and right electromagnets 1 748 can be controlled to stop working. Under the action of the tension spring, the left and right docking shafts 743 will move again to the side closer to the holding furnace 6 to return to their original positions.

[0057] After the fallen casting is removed, the sealed cavity 2 is vented first, and then the air cushion 21 is retracted upward to return to its original position. At this time, the top plate 42 will lose the pushing force of the air cushion 21 and move upward away from the support plate 4 under the action of the compression spring to return to its original position. The top plate 42 will also drive several push rods 43 to move upward synchronously until they are completely retracted into the upper mold 41 to return to their original position. Then, several hydraulic push rods 11 control the left and right sleeve plates 3 to move downward synchronously. The left and right sleeve plates 3 will drive the corresponding sleeve plates 5 to move downward synchronously through the corresponding connecting brackets 12 until the left and right docking shafts 743 are inserted into the corresponding insertion holes again, thereby realizing the docking of the left and right sleeve plates 5 and the mating plate 72, as well as the rapid docking of the upper mold 41 and the lower mold 63.

[0058] During the tilt adjustment stage of the holding furnace 6, if the tilt casting method is adopted, it is necessary to ensure that the two sleeve plates 5 and the mating plate 72 are initially in a horizontal docking state. At this time, the upper mold 41 and the lower mold 63 are also in a docking state. Several insert rods 411 will be inserted into the corresponding slots on the lower mold 63. Then, the two sleeve plates 3 can be controlled to move upward synchronously to a suitable height by several hydraulic push rods 11. The two sleeve plates 3 will also drive the corresponding sleeve plates 5 to move upward synchronously through the corresponding connecting brackets 12. At this time, the support plate 4 will drive the upper mold 41, the top plate 42 and the push rod 43 to move upward synchronously. The mating plate 72 will also drive the holding furnace 6 and the lower mold 63 to move upward synchronously. The holding furnace 6 will drive the two extension plates 835 and the two aligning insert plates 836 to move upward synchronously, so that the holding furnace 6 and the two aligning insert plates 836 are far away from the support plate 82, so that the holding furnace 6 has sufficient tilting space.

[0059] Once the insulation furnace 6 is far away from the support plate 82, according to the required tilt angle, the corresponding slide block 741 can be moved to either the front or rear side by controlling the two hydraulic push rods 744 respectively. The slide block 741 will drive the docking shaft 743 to slide synchronously along the limiting slide hole 73 through the sliding sleeve 742. Since the limiting slide hole 73 is arc-shaped, during the movement of the docking shaft 743 to either the front or rear side, the docking shaft 743 will drive the sliding sleeve 742 to perform adaptive sliding compensation synchronously along the guide slide hole on the slide block 741. At this time, the two docking shafts 743 will jointly drive the insulation furnace 6 to rotate around the support shaft 71 at a suitable angle through the mating plate 72. The insulation furnace 6 will drive the upper mold 41 and the lower mold 63 to rotate synchronously. The support shaft 71 rotates to a suitable angle, and the support plate 4 will also rotate synchronously around the support shaft 71 to compensate for the rotation. This achieves the effect of the heat preservation furnace 6 rotating around the support shaft 71 at a suitable angle. By using the heat preservation furnace 6 to drive the upper mold 41 and the lower mold 63 to rotate synchronously around the support shaft 71, the stability of the heat preservation furnace 6 when tilted is ensured. At the same time, it avoids the risk of additional stress and wear caused by the tilt of the heat preservation furnace 6 after it is lifted and tilted. In addition, the connection strength between the upper mold 41 and the lower mold 63 is increased by several insert rods 411. This also avoids the problem of leakage or unstable pouring pressure caused by gaps in the fit between the riser pipe 62, the upper mold 41 and the lower mold 63 during the lifting and tilting of the heat preservation furnace 6.

[0060] During the locking stage of the locking device 747, after the tilt angle of the holding furnace 6 is adjusted, several locking devices 747 can be controlled to start working. These locking devices 747 will lock and fix the corresponding support shaft 71 and slide rod 746 again. At this time, the support plate 4 cannot rotate around the support shaft 71, and the slide rod 746 cannot slide along the bearing seat 745, thereby achieving the effect of fixing the angle of the support plate 4 and the mating plate 72. The double locking structure achieves reliable locking of the support shaft 71 and the slide rod 746, avoiding the problem of the tilt angle changing due to the weight or pressure fluctuation of the holding furnace 6 during the casting process, which would cause the furnace body to shift during the casting process, affecting the casting quality and casting consistency. Finally, the operation steps of the low-pressure casting stage and the mold opening and part removal stage in the conventional vertical casting method are repeated to complete the tilt casting work.

[0061] During the casting process, after the casting is formed, several locking devices 747 need to be stopped to release the locking effect. Then, the corresponding sliding blocks 741 are moved towards the center of the sleeve plate 5 by the two hydraulic push rods 744 to return to their original positions. The sliding blocks 741 will drive the docking shaft 743 to slide synchronously along the limiting sliding hole 73 via the sliding sleeve 742. The docking shaft 743 will drive the sliding sleeve 742 to perform adaptive sliding compensation along the guide sliding hole on the sliding block 741. At this time, the two docking shafts 743 will jointly drive the holding furnace 6 to rotate in the opposite direction around the support shaft 71 by a suitable angle via the mating plate 72. The holding furnace 6 will drive the upper mold 41 and lower mold 63 to rotate synchronously around the support shaft 71 by a suitable angle. During this period, the support plate 4 will also synchronously rotate in the opposite direction around the support shaft 71 to compensate, thereby achieving the effect of the holding furnace 6 rotating in the opposite direction around the support shaft 71 to return to its original position. Then, several hydraulic push rods 11 control the two sleeve plates 1... 3. Simultaneously move downwards to restore the original position. The two sleeve plates 1 and 3 will also drive the corresponding sleeve plates 2 and 5 to move downwards to restore the original position through the corresponding connecting brackets 12. At this time, the support plate 4 will drive the upper mold 41, top plate 42 and top rod 43 to move downwards to restore the original position. The mating plate 72 will also drive the holding furnace 6 and lower mold 63 to move downwards to restore the original position. The holding furnace 6 will drive the two extension plates 835 and the two alignment plates 836 to move downwards to restore the original position, so that the holding furnace 6 and the two alignment plates 836 are placed on the support plate 82 again. At this time, the two alignment plates 836 are inserted into the corresponding alignment slots. Finally, the subsequent opening and part removal stage is carried out to remove the casting. The holding furnace 6 with an adjustable angle can be freely replaced to adapt to casting cavities with simple structures and casting cavities with complex structures, corresponding to conventional vertical casting methods and inclined casting methods, respectively, increasing the applicability of the equipment.

[0062] During the replacement and maintenance phase of the holding furnace 6, when the holding furnace 6 needs to be replaced or maintained, the corresponding docking shafts 743 should be controlled away from the holding furnace 6 by the two electromagnets 748 on the left and right sides respectively, ensuring that the two sleeve plates 5 and the mating plate 72 are not in a misaligned state. It should be noted that the magnetism of the electromagnet 834 and the mating magnet 833 are attracted to each other. First, the electromagnet 834 is controlled to start working. Under the magnetic attraction of the electromagnet 834, the mating magnet 833 will drive the baffle 832 to move downward synchronously until the baffle 832 is completely retracted into the receiving groove. At this time, the support... Plate 82 can slide freely forward, allowing the operator to push out the holding furnace 6 and support plate 82. With the help of the external replacement receiving track, the replacement and maintenance of the holding furnace 6 can be easily completed. After replacement, the holding furnace 6 and support plate 82 will be located again in the middle of the upper part of the lower mounting plate. The electromagnet 834 will be stopped again, so that the inner walls of baffle 831 and baffle 832 will be movable and attached to the outer wall of support plate 82 to limit their movement, thereby achieving the effect of placing the holding furnace 6 in the center and ensuring the precise alignment of the upper mold 41 and lower mold 63 during the subsequent casting process.

[0063] In summary, this application has the following advantages:

[0064] Advantage 1: During the assembly stage, several hydraulic push rods 11 control the left and right sleeve plates 3 to move downwards synchronously. The left and right sleeve plates 3 will drive the corresponding sleeve plates 5 to move downwards synchronously through the corresponding connecting brackets 12. The left and right docking shafts 743 will be squeezed by the chamfered structure on the upper side of the left and right ends of the mating plate 72, moving away from the heat preservation furnace 6 to avoid it. Until the left and right docking shafts 743 continue to move downwards synchronously with the corresponding sleeve plates 5 to the insertion hole, the left and right docking shafts 743 will move towards the heat preservation furnace 6 and be inserted into the corresponding insertion hole, thereby achieving the docking effect of the left and right sleeve plates 5 and the mating plate 72. In addition, the upper mold 41 will also drive several insertion rods 411 to move downwards synchronously. The insertion rods 411 will be inserted into the corresponding slots on the lower mold 63, and the upper mold 41 will gradually move closer to the lower mold 63 to dock, thereby achieving the effect of rapid docking between the upper mold 41 and the lower mold 63.

[0065] Secondly, during the low-pressure casting stage, compressed air is introduced above the liquid metal in the holding furnace 6 through the gas supply pipe. The liquid metal will rise along the riser pipe 62 and enter the internal cavity of the upper mold 41 and the lower mold 63 through the casting system in the lower mold 63 until the liquid metal is completely solidified in the cavity. Then, the compressed air in the holding furnace 6 is discharged. Then, several locking devices 747 are controlled to stop working. The locking devices 747 will again maintain clearance fit with the corresponding support shaft 71 and slide rod 746 to release the angle locking effect. It is also necessary to control the two electromagnets 748 on the left and right to start working. At this time, the two docking shafts 743 on the left and right will move away from the holding furnace 6 and withdraw from the corresponding insertion hole, thereby achieving the effect of quickly releasing the docking of the two sleeve plates 5 and the mating plate 72.

[0066] Thirdly, during the tilt adjustment stage of the heat preservation furnace 6, several hydraulic push rods 11 control the left and right sleeve plates 3 to move upwards synchronously to a suitable height. At this time, the support plate 4 will drive the upper mold 41, top plate 42, and top rod 43 to move upwards synchronously. The mating plate 72 will also drive the heat preservation furnace 6 and the lower mold 63 to move upwards synchronously. When the heat preservation furnace 6 is far away from the support plate 82, the two hydraulic push rods 744 control the corresponding sliding blocks 741 to move to either side. At this time, the heat preservation furnace 6 will drive the upper mold 41 and the lower mold 63 to rotate around the support shaft 71 at a suitable angle, thereby achieving... The current insulation furnace 6 rotates around the support shaft 71 at a suitable angle. By using the insulation furnace 6 to drive the upper mold 41 and the lower mold 63 to rotate synchronously around the support shaft 71, the stability of the insulation furnace 6 when tilted is ensured. At the same time, it avoids the risk of additional stress and wear caused by the tilt of the insulation furnace 6 after it is lifted and tilted. In addition, the connection strength between the upper mold 41 and the lower mold 63 is increased by several insert rods 411. It can also avoid the problem of leakage or unstable pouring pressure caused by gaps in the fit between the riser pipe 62, the upper mold 41 and the lower mold 63 during the lifting and tilting of the insulation furnace 6.

[0067] Fourthly, during the locking stage of the locking device 747, multiple locking devices 747 can be controlled to start working. These multiple locking devices 747 will lock and fix the corresponding support shaft 71 and slide rod 746 again. At this time, the support plate 4 cannot rotate around the support shaft 71, and the slide rod 746 cannot slide along the bearing seat 745. This achieves the effect of fixing the angle of the support plate 4 and the mating plate 72. The double locking structure achieves reliable locking of the support shaft 71 and the slide rod 746, avoiding the problem of the tilt angle change caused by the weight or pressure fluctuation of the holding furnace 6 during the casting process, which would cause the furnace body to shift during the casting process, affecting the casting quality and casting consistency.

[0068] Fifthly, by repeating the low-pressure casting stage and mold opening and part removal stage of the conventional vertical casting method, the inclined casting work can be completed. During this process, after the casting is formed, the corresponding slides 741 are moved towards the middle of the sleeve plate 5 by the two hydraulic push rods 744 on the left and right to restore their original positions. The holding furnace 6 will drive the upper mold 41 and the lower mold 63 to rotate in the opposite direction around the support shaft 71 at a suitable angle, thereby achieving the effect of the holding furnace 6 rotating in the opposite direction around the support shaft 71 at a suitable angle to restore its original position. Then, the two sleeve plates 3 on the left and right are moved downward synchronously by several hydraulic push rods 11 to restore their original positions. At this time, the support plate 4 The upper mold 41, top plate 42, and top rod 43 will move downwards synchronously to return to their original positions. The mating plate 72 will also move the holding furnace 6 and lower mold 63 downwards synchronously to return to their original positions, so that the holding furnace 6 and the two alignment plates 836 are placed on the support plate 82 again. At this time, the two alignment plates 836 are inserted into the corresponding alignment slots. Finally, the subsequent opening and part removal stage is carried out to remove the casting. The holding furnace 6 with an adjustable angle can be freely replaced to adapt to casting cavities with simple structures and casting cavities with complex structures, corresponding to conventional vertical casting methods and inclined casting methods, respectively, increasing the applicability of the equipment.

[0069] Advantage 6: During the replacement and maintenance of the holding furnace 6, ensure that the two sleeve plates 5 and the mating plate 72 are not misaligned. First, control the electromagnet 834 to start working. The mating magnet 833 will drive the baffle 832 to move downwards synchronously until the baffle 832 is completely retracted into the receiving groove. This can easily complete the replacement and maintenance of the holding furnace 6. After replacement, the holding furnace 6 and the support plate 82 will be located in the middle of the upper part of the lower mounting plate. Control the electromagnet 834 to stop working again, so that the inner walls of the baffle 831 and the support plate 832 will move and fit against the outer wall of the support plate 82 to limit their movement. This achieves the effect of placing the holding furnace 6 in the center and ensures the precise alignment of the upper mold 41 and the lower mold 63 during the subsequent casting process.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-locking lifting device for a casting holding furnace based on a furnace body tilt compensation structure, characterized in that, include: The support frame (1) consists of several rectangular guide columns evenly distributed and two mounting plates. The upper end of the upper mounting plate is equipped with a closed cavity (2) with an air inlet and an exhaust outlet. On the outer wall of each pair of front and rear guide columns, a first sleeve plate (3) and a second sleeve plate (5) are slidably mounted together in the vertical direction. A support plate (4) is set between the two first sleeve plates (3) on the left and right sides. A heat preservation furnace (6) is set between the two second sleeve plates (5) on the left and right sides. An angle adjustment part (7) is set together on the two first sleeve plates (3) and the two second sleeve plates (5). A furnace body centering part (8) is set together on the support frame (1) and the heat preservation furnace (6). The inner wall of the heat preservation furnace (6) is equipped with a crucible (61), and the upper end of the heat preservation furnace (6) is equipped with a liquid riser (62) through a cover plate. The upper end of the cover plate is equipped with a lower mold (63). The angle adjustment part (7) includes a support shaft (71) installed at both ends of the support plate (4). The support shaft (71) rotates through the corresponding sleeve plate (3). A mating plate (72) is fixedly sleeved on the outer wall of the heat preservation furnace (6) between the two sleeve plates (5). Insertion holes are opened at both ends of the mating plate (72). Limiting sliding holes (73) are opened at the end of the sleeve plate (5) facing the mating plate (72). An angle adjustment group (74) is provided on both the sleeve plate (3) and the sleeve plate (5) on the left and right sides.

2. The self-locking lifting device for a casting holding furnace based on a furnace body tilt compensation structure according to claim 1, characterized in that: The furnace body centering section (8) includes slide rails (81) symmetrically installed on the upper part of the lower mounting plate. Support plates (82) are slidably installed on the two slide rails (81). The inner wall of the support plate (82) is movably attached to the outer wall of the bottom end of the heat preservation furnace (6). Alignment grooves are symmetrically opened on the upper end of the support plate (82). Centering groups (83) are jointly provided on the support frame (1) and the heat preservation furnace (6).

3. The self-locking lifting device for a casting holding furnace based on a furnace body tilt compensation structure according to claim 1, characterized in that: The angle adjustment group (74) includes a slide seat (741) that is slidably mounted on the side wall of the end of the sleeve plate (5) away from the heat preservation furnace (6). The end of the slide seat (741) away from the heat preservation furnace (6) is provided with a guide slide hole. A slide sleeve (742) is slidably installed on the inner wall of the guide slide hole. An electromagnet (748) is embedded in the end of the slide sleeve (742) away from the heat preservation furnace (6), and a docking shaft (743) is connected to it through a tension spring. The docking shaft (743) is composed of a round rod and a magnetic limiting plate. The outer wall of the round rod of the docking shaft (743) is slidably connected to the inner wall of the slide sleeve (742). A hydraulic push rod (744) is installed on the rear side of the end of the sleeve plate (5) away from the heat preservation furnace (6) through a mounting seat. The telescopic end of the hydraulic push rod (744) is fixedly connected to the slide seat (741).

4. The self-locking lifting device for a casting holding furnace based on a furnace body tilt compensation structure according to claim 3, characterized in that: The angle adjustment group (74) also includes a bearing seat (745) installed on the front side of the end of the sleeve plate two (5) away from the heat preservation furnace (6). A sliding rod (746) is installed on the front end of the slide block (741) and is slidably installed on the bearing seat (745). A locking device (747) is also installed on the front side of the bearing seat (745) at the end of the sleeve plate two (5) away from the heat preservation furnace (6). A locking device (747) is also installed on the end of the sleeve plate one (3) away from the support plate (4). Several locking devices (747) are slidably sleeved on the corresponding support shaft (71) and sliding rod (746).

5. The self-locking lifting device for a casting holding furnace based on a furnace body tilt compensation structure according to claim 2, characterized in that: The centering assembly (83) includes a baffle (831) installed on the rear side of the upper end of the lower mounting plate. A receiving groove is provided on the front side of the upper end of the lower mounting plate. A baffle (832) is slidably installed on the inner wall of the receiving groove by a compression spring. A matching magnet (833) is embedded at the lower end of the baffle (832). An electromagnet (834) is embedded on the inner wall of the bottom end of the receiving groove corresponding to the matching magnet (833).

6. The self-locking device for lifting a casting holding furnace based on a furnace body tilt compensation structure according to claim 5, characterized in that: The centering assembly (83) also includes an extension plate (835) symmetrically installed on the outer wall of the heat preservation furnace (6), with an alignment insert plate (836) installed at the lower end of the extension plate (835) corresponding to the alignment slot.

7. The self-locking lifting device for a casting holding furnace based on a furnace body tilt compensation structure according to claim 5, characterized in that: Several hydraulic push rods (11) are installed through the upper end of the mounting plate on the upper side. The telescopic ends of the hydraulic push rods (11) are respectively fixedly connected to the corresponding sleeve plate (3). A connecting bracket (12) is installed on the upper end of the sleeve plate (5). The connecting bracket (12) is composed of a waist-shaped sleeve plate and two sleeves at the front and rear. The connecting bracket (12) is slidably sleeved on the outer wall of two adjacent guide posts.

8. The self-locking lifting device for a casting holding furnace based on a furnace body tilt compensation structure according to claim 1, characterized in that: The support plate (4) is equipped with an upper mold (41) at its lower end. The upper ends of the support plate (4) and the upper mold (41) are provided with a guide groove. The upper end of the support plate (4) is connected to a top plate (42) by a compression spring. The top plate (42) is composed of a rectangular plate and a vertical rod. The vertical rod is slidably connected to the inner wall of the guide groove. Several top rods (43) are installed at the lower end of the rectangular plate of the top plate (42). The top rods (43) slide through the upper mold (41).

9. A self-locking lifting device for a casting holding furnace based on a furnace body tilt compensation structure according to claim 8, characterized in that: The upper type (41) has several insert rods (411) installed at its lower end. The insert rods (411) are evenly distributed in a circle. The lower type (63) has slots for each of the insert rods (411) at its upper end.

10. The self-locking lifting device for a casting holding furnace based on a furnace body tilt compensation structure according to claim 1, characterized in that: An air cushion (21) is slidably installed on the inner wall of the closed cavity (2). The air cushion (21) is composed of a piston plate and a piston rod, with the piston rod sliding through the upper mounting plate.

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