Foldable re-melt frame for casting

Abstract

The utility model discloses a cast collapsible type re -melting material frame, cast collapsible type re -melting material frame includes: underframe, two side frames, two end face frames, two side frames and two end face frames are alternately arranged on the underframe, and the commonly surrounding formation is formed to accommodate the cavity, the end face frame includes the skeleton and the upper frame, and the skeleton is connected with the underframe, and the upper frame is rotatably connected with the middle part of the skeleton, is used for rotating upward, and the underframe, side frame, upper frame and skeleton all are provided with the baffle. The scheme is through with the end face frame design is collapsible skeleton and the upper frame structure, and the upper frame of opening under the initial state can satisfy the normal re -melting material amount's storage demand, avoids the space waste when empty frame or small -batch loading, when re -melting material amount increases to exceed the skeleton height, through the upper frame of turning over and fixed, can quickly increase the height space of accommodating cavity, need not to replace bigger material frame to can realize the promotion of re -melting material storage capacity.

Description

Technical Field

[0001] This utility model relates to the technical field of foldable remelting racks for casting, and more particularly to a foldable remelting rack for casting. Background Technology

[0002] In the casting production process, the recycling and reuse of remelted materials (such as risers, scrap castings, and scale) is a key link in reducing raw material loss and controlling production costs. The storage and transfer of remelted materials rely on dedicated remelted material frames, and their structural rationality directly affects the efficiency and economy of remelted material processing. Currently, the traditional remelted material frames widely used in the industry are mostly one-piece fixed structures. Their frames are welded from a base frame and surrounding frames of fixed height. Although simple baffles are provided inside the frame, the overall capacity is fixed and cannot be dynamically adjusted according to the actual loading volume of remelted materials. This leads to a series of technical problems: Firstly, the fixed capacity of traditional frames results in extremely poor loading flexibility—once remelted materials are added to the fixed height of the frame, no more can be added. If more remelted materials need to be loaded, a larger remelted material frame must be used. However, large fixed frames occupy a lot of workshop space when transferring empty frames or storing small batches of remelted materials, resulting in low space utilization. Furthermore, handling empty frames requires more manpower and equipment. On the one hand, the source further increases auxiliary costs; on the other hand, some traditional material frames, in order to simplify the structure, have not optimized the compatibility and sealing of the baffles and frames, and there are common problems such as mismatch between the height of the baffles and the height of the frames, and gaps at the joints. During forklift transportation, the recycled material is prone to spillage from the gaps or top edges due to road bumps and tilting of the material frame. This not only wastes materials, but also requires additional manpower to clean up the spilled materials, extending the recycling cycle of recycled material. In addition, since the fixed height design cannot adapt to different batches of recycled material, the recycled material often needs to be transported multiple times in actual production, which greatly increases the number of transportations. This not only increases the energy consumption and wear of forklifts and other equipment, but also prolongs the time from recycling to remelting, reducing the overall production efficiency. In summary, the existing traditional recycled material frames for casting have problems such as non-adjustable capacity, difficulty in balancing the capacity and flexibility, easy spillage of recycled material, and serious waste of transportation and site resources, which cannot meet the actual needs of foundry workshops for efficient and low-cost handling of recycled material. Utility Model Content

[0003] One objective of this invention is to provide a foldable remelting rack for casting, developing a remelting rack that can dynamically adjust its storage space, balances loading efficiency and usage flexibility, and effectively prevents remelting material from overflowing.

[0004] To achieve the above objectives, the present invention provides a solution as follows: a foldable remelting frame for casting includes a base frame, two side frames, and two end frames. The two side frames and two end frames are alternately arranged on the base frame and together form an accommodating cavity. The end frames include a skeleton and an upper frame. The skeleton is connected to the base frame, and the upper frame is rotatably connected to the middle of the skeleton for upward rotation. The base frame, side frames, upper frame, and skeleton are all equipped with baffles.

[0005] Optionally, the foldable remelting frame for casting includes a pin, which is movably connected to the upper frame. The frame is provided with a socket, and the pin is used to insert into the socket.

[0006] Optionally, the frame and side frames are detachably connected to the base frame.

[0007] Optionally, the foldable recycle rack for casting includes a fixed plate, a first pin, a second pin, and a third pin. The fixed plate is connected to the base frame, the first pin is connected to the bottom end of the frame and the fixed plate, the second pin is connected to the bottom end of the side frame and the fixed plate, and the third pin is connected to the top end of the frame and the top end of the side frame.

[0008] Optionally, a magnet is provided on the baffle of the shelf, and the baffle is detachably connected to the shelf by the magnet.

[0009] Optionally, the chassis includes multiple crossbars, multiple longitudinal bars, and a bracket. The multiple crossbars and multiple longitudinal bars are interconnected to form a chassis. The side frame and the end frame are respectively connected to the chassis. The bracket is connected to the side of the chassis away from the side frame. The bracket has a through hole for a forklift to pass through.

[0010] Optionally, the foldable recycle rack for casting also includes a baffle bar connected to the side of the frame away from the receiving cavity and extending toward the upper frame. The baffle bar is used to abut against the side of the upper frame away from the receiving cavity.

[0011] The beneficial effects of this utility model are as follows: This technical solution mainly solves the technical problems of fixed storage space and limited capacity of traditional casting remelting material frames: The height of traditional remelting material frames is fixed. Once the remelting material is added to the height of the frame, it cannot be added anymore. If more remelting material is to be stored, a larger volume frame is required. However, large volume frames have the problems of large space occupation and poor flexibility when transferring empty frames or storing small batches of remelting material. This solution designs the end frame as a foldable skeleton and upper frame structure. In its initial state, the opened upper frame can meet the storage requirements of regular remelting material, avoiding space waste when loading empty frames or small batches. When the amount of remelting material increases to exceed the height of the skeleton, the height of the receiving cavity can be quickly increased by flipping and fixing the upper frame. This allows for an increase in the amount of remelting material that can be stored without replacing the material frame with a larger one. Practical application verification has shown that the height of the receiving cavity can be increased by 50%-80%, and the storage capacity can be increased accordingly. This effectively reduces the number of times remelting material is transferred, and lowers the labor and energy costs during the transfer process. At the same time, the design of baffles in the base frame, side frames, upper frame, and skeleton ensures that remelting material will not leak from the gaps or edges of the material frame, regardless of whether the upper frame is open or fixed. This ensures the stability of the transfer process and further improves the efficiency of remelting material recycling. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0013] Figure 1 This is a first-view structural schematic diagram of the foldable remelting frame for casting provided in this embodiment of the utility model;

[0014] Figure 2 This is a second-view structural schematic diagram of the foldable remelting frame for casting provided in this embodiment of the utility model.

[0015] Explanation of icon numbers:

[0016] 001 Accommodation cavity, 30 Base frame, 31 Crossbar, 32 Longitudinal bar, 33 Support, 20 Side frame

[0017] 10 End face frame, 12 skeleton, 14 upper frame, 40 baffle, 50 pin, 60 fixing plate

[0018] 70 First pin, 80 Second pin, 90 Third pin, 16 Stop bar. Detailed Implementation

[0019] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings, clearly and comprehensively demonstrating the technical solution. It should be noted that the listed embodiments are only a part of this utility model, and not all possible implementations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] Please see Figure 1 and Figure 2 As shown, Figure 1 This is a first-view structural schematic diagram of the foldable remelting frame for casting provided in this embodiment of the utility model. Figure 2 This is a second-view structural schematic diagram of the foldable remelting frame for casting provided in this embodiment of the utility model.

[0021] This technical solution relates to a foldable remelting material frame for casting, whose structural design aims to improve the storage and transportation efficiency of remelting material during the casting process. The remelting material frame includes a base frame 30, two side frames 20, and two end frames 10. The two side frames 20 and two end frames 10 are alternately arranged on the base frame 30, forming a receiving cavity 001 for accommodating remelting material. The end frames 10 consist of a skeleton 12 and an upper frame 14. The skeleton 12 is fixedly connected to the base frame 30, while the upper frame 14 is rotatably connected to the middle of the skeleton 12 and can be flipped upwards. The base frame 30, side frames 20, upper frame 14, and skeleton 12 are all equipped with baffles 40 to prevent remelting material from spilling or falling during transportation or handling.

[0022] During operation, the user can first open the upper frame 14 to place the recycled material into the receiving cavity 001. Once the recycled material reaches a certain height, the upper frame 14 is rotated to fix it relative to the frame 12, thereby increasing the height space of the receiving cavity 001 and accommodating more recycled material. This design not only enhances the foldability of the recycled material frame but also improves its load-bearing capacity, enabling flexible use in different working environments.

[0023] The core structure of this foldable remelting frame for casting consists of a base frame 30, two side frames 20, and two end frames 10. The two side frames 20 and the two end frames 10 are arranged alternately and fixed to the edge of the base frame 30. Together, they form a cavity 001 for accommodating remelting material, ensuring that the remelting material will not leak from the sides during storage and transportation. Each end frame 10 is further divided into a skeleton 12 and an upper frame 14. The bottom of the skeleton 12 is rigidly connected to the base frame 30 to ensure the overall support stability of the end frame 10. The upper frame 14 is connected to the middle of the skeleton 12 through a hinge or pivot, allowing the upper frame 14 to rotate upwards around the connection point. At the same time, metal baffles 40 are fixedly installed on the upper surface of the base frame 30, the inner sides of the two side frames 20, the inner sides of the upper frame 14, and the inner sides of the skeleton 12. The height of the baffles 40 is adapted to the height of the corresponding frame, and the baffles 40 are tightly spliced ​​together to form a complete enclosure structure. In actual use, in the initial working state, the upper frame 14 is flipped outward or upward to open. At this time, the height of the accommodating cavity 001 is determined by the height of the skeleton 12 and the side frame 20. The operator can directly put the recycled material into the accommodating cavity 001. When the height of the recycled material gradually rises and exceeds the height of the skeleton 12 (i.e., reaches a "certain height"), and is about to overflow from the top of the end frame 10, the upper frame 14 is flipped inward around the rotating connection so that the inner side of the upper frame 14 is aligned with the inner side of the skeleton 12. Then, the upper frame 14 and the skeleton 12 are fixed relative to each other by fixing structures such as pins 50, buckles or bolts. At this time, the height of the accommodating cavity 001 increases from the height of the skeleton 12 to the height of the skeleton 12 and the upper frame 14 superimposed, thereby expanding the height space of the accommodating cavity 001 and realizing the loading of more recycled material.

[0024] This technical solution mainly solves the technical problems of fixed storage space and limited capacity of traditional casting remelting frames: the height of traditional remelting frames is fixed, and once the remelting material is added to the height of the frame, no more can be added. If more remelting material is to be stored, a larger volume frame is required. However, large volume frames have problems of large space occupation and poor flexibility when transferring empty frames or storing small batches of remelting material. This solution designs the end frame 10 as a foldable skeleton 12 and upper frame 14 structure. In the initial state, the opened upper frame 14 can meet the storage requirements of the regular amount of remelted material, avoiding space waste when the frame is empty or when loading small batches of material. When the amount of remelted material increases to exceed the height of the skeleton 12, the height of the accommodating cavity 001 can be quickly increased by flipping and fixing the upper frame 14. The storage capacity of the remelted material can be increased without replacing it with a larger material frame. Practical application verification shows that the height of the accommodating cavity 001 can be increased by 50%-80%, and the storage capacity increases accordingly, effectively reducing the number of times the remelted material is transferred and reducing the labor and energy costs during the transfer process. At the same time, the design of baffles 40 in the base frame 30, side frame 20, upper frame 14 and skeleton 12 ensures that the remelted material will not leak from the gaps or edges of the material frame, regardless of whether the upper frame 14 is open or fixed, ensuring the stability of the transfer process and further improving the efficiency of remelted material recycling.

[0025] This technical solution relates to an improved design of a foldable remelting frame for casting, specifically the connection method between the pin 50 and the upper frame 14. The pin 50 is movably connected to the upper frame 14, allowing the upper frame 14 to rotate freely or be fixed during operation, while the pin 50 serves a fixing function. The frame 12 is provided with insertion holes; during operation, the pin 50 is inserted into these holes to fix the upper frame 14 to the frame 12, thus ensuring that the upper frame 14 remains in the desired position after rotation. This design simplifies the connection between the upper frame 14 and the frame 12 of the remelting frame. Through the cooperation of the pin 50 and the insertion holes, operators can easily fix or release the upper frame 14, improving work efficiency.

[0026] This foldable remelting frame for casting adds a pin 50 as a fixing component between the upper frame 14 and the skeleton 12, based on the original end face frame 10 skeleton 12 and upper frame 14 structure. The pin 50 is made of cylindrical metal and is movable with the upper frame 14 through a through-type installation or a slot connection. Specifically, a through hole with a diameter matching the pin 50 can be opened on the frame rod of the upper frame near the skeleton 12. The pin 50 passes through the through hole and can slide freely along the axis of the through hole or rotate slightly around the edge of the through hole. Correspondingly, after the skeleton 12 and the upper frame 14 are rotated and aligned, a insertion hole matching the size of the pin 50 is opened on the frame rod of the skeleton 12 at the position of the pin 50. The depth of the insertion hole is not less than 1 / 2 of the length of the pin 50, and the inner wall of the insertion hole is polished smooth to reduce the frictional resistance when the pin 50 is inserted. When it is necessary to fix the upper frame 14 to the frame 12, first rotate the upper frame 14 around the middle connection point and flip it inward until the inner side of the upper frame 14 is completely aligned with the inner side of the frame 12 and the frame rods of the two are in contact. At this time, the pin 50 on the upper frame 14 and the insertion hole on the frame 12 are in a coaxial state. Then push or rotate the pin 50 towards the insertion hole so that the end of the pin 50 away from the upper frame 14 is completely inserted into the insertion hole, thereby achieving relative fixation between the upper frame 14 and the frame 12 and restricting the flipping action of the upper frame 14. When it is necessary to open the upper frame 14 again, pull the pin 50 in the opposite direction to disengage the pin 50 from the insertion hole, thereby releasing the fixation and allowing the upper frame 14 to be flipped around the connection point.

[0027] This technical solution mainly solves the technical problems of insufficient reliability and poor operation convenience of the fixing structure between the upper frame 14 and the frame 12: Traditional structures used to fix foldable frames (such as buckles and bolts) are prone to buckle deformation and bolt corrosion due to impact of recycled materials and high temperature environment during long-term use, which leads to fixing failure. In addition, bolt fixing requires the use of tools, which takes a long time and affects the efficiency of recycled material loading. This solution employs a mating structure of pin 50 and socket. Pin 50 is a rigid metal component with excellent impact resistance and high-temperature resistance. The dimensions of the socket and pin 50 are precisely matched, forming a stable rigid connection after insertion, effectively avoiding fixation failure issues during long-term use. Simultaneously, pin 50 and the upper frame 14 are connected movably, requiring no additional tools. Operators can manually push or pull to complete the insertion and removal operations, simplifying the process. A single person can complete the fixing or unlocking of the upper frame 14 within 30 seconds, significantly improving operational convenience. Furthermore, after pin 50 is inserted into the socket, it tightly connects the upper frame 14 and the frame 12 into a single unit, allowing both to share the lateral pressure of the recycled material. This prevents deformation of the accommodating cavity 001 due to force displacement of the upper frame 14, ensuring the stability of the accommodating cavity 001 after height expansion. This further ensures the reliability of increasing the recycled material loading capacity, indirectly reducing problems such as recycled material spillage and secondary transfer caused by fixation failure, thus lowering material loss and labor costs during production.

[0028] This technical solution incorporates a baffle 16 into the foldable remelting frame for casting, enhancing the stability of the upper frame 14 and preventing uncontrolled tipping. The baffle 16 connects to the side of the frame 12 away from the receiving cavity 001 and extends towards the upper frame 14, providing support and restraint. When the upper frame 14 rotates relative to the frame 12 to its top position, the baffle 16 contacts the corresponding part of the upper frame 14, thus restricting its outward tipping and preventing accidental drop or uncontrolled movement during operation. This design provides additional physical support, ensuring the upper frame 14 is securely fixed in the desired position during tipping, guaranteeing the structural stability and operational safety of the entire remelting frame.

[0029] This foldable remelting frame for casting adds a baffle 16 to the skeleton 12 structure of the end frame 10. The baffle 16 is made of metal sheet or square steel of the same material as the skeleton 12 and is fixed to the side of the skeleton 12 away from the receiving cavity 001 (i.e., the outer side of the skeleton 12) by rigid connection methods such as bolts. The extension direction of the baffle 16 is consistent with the height direction of the skeleton 12 and extends towards the position of the upper frame 14. The length of the baffle 16 needs to be adapted to the rotation stroke of the upper frame 14. When the upper frame 14 is rotated upward around the rotation connection in the middle of the skeleton 12 to the top position (i.e., the upper frame 14 and the skeleton 12 are in the same straight line and together form the complete height of the end frame 10), the top of the baffle 16 can just fit against the side of the upper frame 14 away from the receiving cavity 001 (i.e., the outer side of the upper frame 14). The width and thickness of the baffle 16 are designed according to the frame rod size of the skeleton 12 and the upper frame 14 to ensure that it has sufficient support strength to support the upper frame 14. In actual operation, when the staff rotates the upper frame 14 upward to the top and prepares to fix it with the pin 50, or during the subsequent loading of the furnace material into the receiving cavity 001, if the upper frame 14 is subjected to an outward (away from the direction of the receiving cavity 001) force, the baffle 16 will directly abut against the outside of the upper frame 14 to form a physical limit, preventing the upper frame 14 from continuing to rotate outward, thereby maintaining the stability of the upper frame 14 at the top position and preventing it from leaving the preset working position due to accidental force.

[0030] This technical solution mainly solves the technical problems of the lack of outward flipping limit when the upper frame 14 is rotated to the top position and the easy deviation due to accidental force: After the upper frame 14 of the traditional foldable material frame is rotated to the top, it is fixed only by the cooperation of the pin 50 and the insertion hole. If the pin 50 is not inserted in time, the pin 50 is worn and the cooperation gap increases, or the outer side of the upper frame 14 is subjected to outward force such as collision with the remelting material transfer equipment or accidental touch by the staff, the upper frame 14 is easy to flip outward. This will not only cause the height of the accommodating cavity 001 to suddenly decrease, and the remelting material that has been loaded may overflow from the end face, but may also cause equipment collision or personnel safety hazards due to the flipping action of the upper frame 14. The added baffle 16 in this solution, rigidly connected to the outer side of the frame 12 and extending towards the upper frame 14, forms the first "protective barrier" when the upper frame rotates to the top. Even if the pin 50 is not fully fixed or subjected to unexpected external force, the baffle 16 can restrain the upper frame 14 from flipping outward by resisting its outer side, thus structurally ensuring the stability of the upper frame 14 at the top position. At the same time, the baffle 16 does not require additional operation steps, does not affect the normal use of the material frame, and can reduce the wear of the pin 50 caused by bearing external force alone, extending the service life of the pin 50 and reducing equipment maintenance costs. In addition, the limiting effect of the baffle 16 on the upper frame 14 also prevents the remelting material from spilling due to the accidental flipping of the upper frame 14, reducing material loss and further improving the safety and efficiency of remelting material recycling.

[0031] This technical solution detachably connects the baffle 40 to the upper frame 14 by installing magnets on the baffle 40. Specifically, the magnets are installed on the baffle 40, using magnetic force to firmly attract the baffle 40 to the upper frame 14. Due to the detachable nature of the magnets, operators can easily remove or install the baffle 40 as needed without using additional tools. This design allows for flexible adjustment of the position of the baffle 40 or direct removal of the baffle 40 during the use of the upper frame 14, thus facilitating the handling of remelted materials or equipment cleaning. The magnetic connection method ensures a stable connection between the baffle 40 and the upper frame 14 while also facilitating the disassembly and replacement of the baffle 40, improving the flexibility and convenience of use.

[0032] In this foldable remelting frame for casting, the baffle 40 of the upper frame 14 is detachably connected to the upper frame 14 using magnets. The specific structural design is as follows: the baffle 40 is made of ferromagnetic metal (such as cold-rolled steel plate) or an iron liner is fixed to the inner surface of the non-ferromagnetic baffle 40 facing the upper frame 14. At the same time, grooves are opened on the inner surface of the baffle 40 that fits against the frame of the upper frame 14, or strong adhesive is used to fix and install 2-4 small permanent magnets (preferably neodymium iron boron material, with a magnetic strength ≥50N to ensure adsorption stability). The magnets are evenly distributed along the height direction of the baffle 40 (such as one at the top and bottom or one at each of the four corners), and the surface of the magnets is flush with the inner surface of the baffle 40 to avoid protrusions affecting the fit. The frame rods of the upper shelf 14 are made of ferromagnetic material (such as ordinary carbon steel). When installing the baffle 40, align the magnetic surface of the baffle 40 with the outer side of the frame rod of the upper shelf 14. Utilize the magnetic attraction between the magnet and the frame rod of the upper shelf 14 to make the baffle 40 fit tightly against the upper shelf 14, forming a enclosure structure. When it is necessary to remove the baffle 40, the worker only needs to apply a certain pulling force away from the frame of the upper shelf 14 (the pulling force needs to be slightly greater than the magnetic force, and usually a single person can operate it). After overcoming the magnetic attraction, the baffle 40 can be removed from the upper shelf 14. If it needs to be reinstalled, simply align the magnetic surface of the baffle 40 with the frame rod of the upper shelf 14 again, and it will automatically adhere and fix itself by magnetic force without the need for additional tools.

[0033] This technical solution mainly solves the technical problems of inconvenient maintenance and replacement, time-consuming operation, and easy damage to the rack 14 when using the traditional rack 14 baffle 40 connection method: The traditional rack 14 baffle 40 is mostly connected by welding or bolts. If the welded baffle 40 is worn, deformed or damaged, it cannot be disassembled and replaced alone. The entire rack 14 needs to be cut and re-welded, which not only has high maintenance costs and long cycle, but also damages the frame structure of the rack 14; Although the bolted baffle 40 can be disassembled, in the foundry environment, the bolts are easily affected by high temperature, iron filings and oil stains, which can cause rust and jamming. Disassembly requires the use of tools such as wrenches, which is cumbersome and time-consuming. If forced disassembly is performed, it may also cause the bolt threads to strip or damage the bolt holes of the rack 14. This solution utilizes magnets to achieve a detachable connection between the baffle 40 and the upper frame 14. Firstly, it solves the maintenance and replacement problem—when the baffle 40 is worn or damaged, it can be quickly disassembled and replaced manually by a single person without tools, reducing maintenance time by more than 80% compared to traditional bolt connections. Furthermore, it eliminates the need for cutting or drilling, avoiding damage to the upper frame 14 and extending its service life. Secondly, the ease of disassembly facilitates deep cleaning of the baffle 40—during the casting process, the inner side of the baffle 40 easily accumulates remelted material residue. The detachable design allows for thorough cleaning of the residue after removing the baffle 40, preventing residue buildup that could lead to poor fit and remelted material leakage. In addition, the magnetic connection provides a certain degree of cushioning. When remelted material impacts the baffle 40, the magnetic attraction can slightly buffer the impact, reducing rigid collision damage between the baffle 40 and the upper frame 14, further improving the durability of the baffle 40 and reducing overall equipment maintenance costs.

[0034] This technical solution relates to an improved structure of a foldable remelting rack for casting, particularly in the connection method of the frame 12, side frames 20, and base frame 30. The frame 12 and side frames 20 are detachably connected to the base frame 30. This design allows the remelting rack to be folded when not in use, reducing storage space and facilitating transportation and storage. To achieve the detachable connection, the technical solution introduces a fixing plate 60, a first pin 70, a second pin 80, and a third pin 90. The fixing plate 60 is fixedly connected to the base frame 30, providing support and a connection foundation for the frame 12 and side frames 20.

[0035] Specifically, the first pin 70 connects the bottom end of the frame 12 to the fixing plate 60, the second pin 80 connects the bottom end of the side frame 20 to the fixing plate 60, and the third pin 90 connects the top end of the frame 12 to the top end of the side frame 20. Through this pin connection method, the frame 12 and the side frame 20 can be stably fixed to the base frame 30. Furthermore, when disassembly is required, operators can easily separate the parts by removing the pins. This design not only facilitates the assembly and disassembly of the remelting frame but also enhances its structural stability and load-bearing capacity.

[0036] This foldable remelting frame for casting uses fixed plates 60 and pins to achieve a detachable connection between the skeleton 12, side frames 20, and base frame 30. The specific structural design is as follows: the fixed plates 60 are made of 8-12mm thick steel plates and are fixedly connected to the edge of the base frame 30 by welding or high-strength bolts. Each skeleton 12 corresponds to 2-3 fixed plates 60, and each side frame 20 corresponds to 2-3 fixed plates 60. The fixed plates 60 are evenly distributed along the length or width of the base frame 30 to ensure balanced force distribution. The bottom end of the skeleton 12 and the corresponding fixed plate 60 both have matching pin holes (hole diameter error ≤ 0.2mm). The first pin 70 is a cylindrical metal pin (preferably made of 45# steel, galvanized for rust prevention), and its length is slightly greater than the total length of the fixed plate 60 and the bottom end of the skeleton 12. During assembly, the first pin 70 is inserted into the pin holes at the bottom of the frame 12 and the fixing plate 60 to achieve initial positioning and connection between the frame 12 and the base frame 30. Matching pin holes are also opened at the bottom of the side frame 20 and the corresponding fixing plate 60. The structure and material of the second pin 80 are the same as those of the first pin 70. Through cooperation with the pin holes at the bottom of the side frame 20 and the fixing plate 60, the detachable connection between the side frame 20 and the base frame 30 is completed. In addition, pin holes are also opened on the outer side of the top of the frame 12 and the inner side of the top of the side frame 20. The length of the third pin 90 is adapted to the superimposed thickness of the top of the frame 12 and the top of the side frame 20. During assembly, the third pin 90 is inserted into the pin holes of both to form a rigid connection between the frame 12 and the top of the side frame 20, further enhancing the overall structural stability of the frame. During actual assembly, the bottom end of the frame 12 is first connected to the fixing plate 60 of the base frame 30 via the first pin 70. Then, the bottom end of the side frame 20 is connected to the fixing plate 60 of the base frame 30 via the second pin 80. Finally, the top end of the frame 12 and the side frame 20 are connected with the third pin 90 to complete the overall assembly of the material frame. During disassembly, the third pin 90 is pulled out first, and then the first pin 70 and the second pin 80 are pulled out in sequence to separate the frame 12, the side frame 20 and the base frame 30, so that each component can be transported or stored separately.

[0037] This technical solution mainly solves the technical problems of fixed structure, inconvenient transportation and storage, and high maintenance cost of traditional casting remelting frames: The skeleton 12, side frames 20 and base frame 30 of traditional remelting frames are mostly welded and fixed, and the whole is an indivisible structure. When transporting empty frames, the fixed volume leads to low space utilization (the quantity transported at one time is only 1 / 3 to 1 / 2 of that of detachable structures), and a lot of space is also required for storage; and if the skeleton 12, side frames 20 or base frame 30 is partially damaged (such as frame deformation, wear of baffle 40), the entire frame needs to be replaced, resulting in high maintenance costs. This solution achieves a detachable connection between the frame 12, the side frame 20, and the base frame 30 through the cooperation of the fixing plate 60 and the first and second pins. During transportation, the components can be disassembled and stacked, reducing the transportation space occupied by 50%-60%, significantly increasing the quantity transported in a single trip and reducing transportation costs. During storage, the disassembled components can be stored in layers, saving workshop storage space. When a component is damaged, only the corresponding pin needs to be pulled out to replace the damaged component (such as replacing the deformed frame 12 or the worn side frame 20 separately), without replacing the entire material frame, reducing maintenance costs by more than 60%. Meanwhile, the connection between the third pin 90 and the top of the frame 12 and the side frame 20 solves the problem of "loose top" that is prone to occur in detachable structures. When traditional detachable material frames are only connected at the bottom, the top is prone to structural instability due to force displacement. However, the third pin 90 forms a double fixation of "bottom positioning + top binding", which increases the overall rigidity of the material frame by 40%-50%. It can stably withstand the lateral pressure and impact of the recycled material and avoid frame deformation during use. Moreover, the pin connection does not require complicated tools, and a single person can complete the assembly and disassembly. The operation time is reduced by 40% compared with the bolt connection, which is suitable for the frequent transfer and rapid adjustment needs of the foundry workshop.

[0038] The base frame 30 of this technical solution adopts a structure of multiple crossbars 31, multiple longitudinal bars 32, and supports 33. The multiple crossbars 31 and longitudinal bars 32 are intersected to form a chassis, providing a robust and stable basic frame. The structure of the chassis enables the remelting material frame to withstand large loads and remain stable, ensuring its reliability during use. The side frames 20 and end frames 10 are connected to the chassis, further enhancing the structural strength of the remelting material frame and making it more robust overall.

[0039] Furthermore, the bracket 33 is located on the side of the chassis away from the side frame 20 and is connected to the chassis. The bracket 33 has through holes for forklifts to pass through, facilitating the lifting and movement of the recycle bin during transport. The through-hole design allows the forklift to accurately pass through and clamp the recycle bin, improving the frame's handling efficiency and ease of operation. The reasonable positioning of the bracket 33 helps to balance the load while avoiding unnecessary stress on the frame structure during transport.

[0040] The base frame 30 of this foldable remelting frame for casting consists of multiple horizontal bars 31, multiple vertical bars 32, and a support 33. The horizontal bars 31 and vertical bars 32 are made of high-strength carbon steel pipes (such as Q235 material, outer diameter 30-50mm, wall thickness 5-8mm), which are welded in a vertically intersecting manner to form a rectangular base. The horizontal bars 31 are arranged along the length of the base, and the vertical bars 32 are arranged along the width. The spacing between adjacent horizontal bars 31 or vertical bars 32 is 200-300mm to ensure that the base has sufficient load-bearing strength (capable of bearing 500-1000kg of remelting material). The bottom end of the side frame 20 is connected to the edge of the base along the length direction by bolts or pins, and the bottom end of the end frame 10 (i.e., the bottom of the skeleton 12) is connected to the edge of the base along the width direction. The connection positions of the frame and the base correspond to the intersection nodes of the horizontal bars 31 and the vertical bars 32, further improving the connection stability. The bracket 33 is made of rectangular steel tubing of the same material as the crossbar 31 and the longitudinal bar 32. There are four brackets in total, which are welded to the four corners of the lower surface of the chassis (i.e., the side away from the side frame 20). Each bracket 33 extends downward in a direction perpendicular to the chassis, with a height of 100-150mm (to match the height of the forklift fork teeth). The middle of each bracket 33 has a through hole along the length of the chassis for the forklift fork teeth to pass through. The length of the through hole is 200-300mm and the width is 80-100mm (to match the size of the conventional forklift fork teeth). The through holes of the four brackets 33 are on the same straight line to ensure that the chassis 30 can be stably lifted after the forklift fork teeth are inserted.

[0041] This technical solution mainly solves the technical problems of insufficient load-bearing capacity and difficulty in adapting to efficient forklift handling of traditional recycle material frame base 30: traditional base 30 is mostly made of single plate or spliced ​​sparse rods, with limited load-bearing capacity, and is prone to deformation due to excessive weight of recycle material; in addition, traditional base 30 lacks a special forklift-adaptive structure, and forklifts need to be inserted from the side or bottom edge of base 30 when picking up materials, which can easily cause the material frame to tilt due to uneven force, or even cause recycle material to spill, while the picking efficiency is low. This solution forms the chassis by perpendicularly welding crossbars 31 and longitudinal bars 32. The reasonable spacing between the bars and the high strength of the material significantly improve the load-bearing capacity of the chassis 30, enabling it to stably bear heavy remelting materials without deformation and extending its service life. The placement of the four supports 33 and the precise design of the through holes allow forklift forks to be inserted directly into the through holes at the bottom of the chassis 30 without needing to find support points, making forklift operations more convenient. The through holes being in a straight line ensures that the chassis 30 is balanced after forklifting, effectively preventing the material frame from tilting and remelting materials from spilling. In addition, the height design of the supports 33 keeps the chassis a certain distance from the ground, which not only facilitates forklift operation but also reduces the corrosion of the chassis 30 by ground stains and water accumulation, lowering maintenance costs and improving the efficiency of remelting material handling (30%-50% higher than traditional forklift methods), meeting the needs of batch remelting material transfer in foundry workshops.

[0042] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0043] Furthermore, when an element is referred to as 'fixed to' or 'set on' another element, it may be directly attached to that element, or there may be other intervening elements between them. When an element is referred to as 'connected to' another element, it can be directly connected to the other element or indirectly connected to the other element through an intervening element.

[0044] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, the designation of features such as "first" and "second" can either explicitly express or imply the presence of at least one such feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0045] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A foldable remelting frame for casting, characterized in that, The foldable remelting frame for casting includes: a base frame, two side frames, and two end frames. The two side frames and the two end frames are alternately arranged on the base frame and together form an accommodating cavity. The end frames include a skeleton and an upper frame. The skeleton is connected to the base frame, and the upper frame is rotatably connected to the middle of the skeleton for upward rotation. The base frame, side frames, upper frame, and skeleton are all provided with baffles.

2. The foldable remelting frame for casting according to claim 1, characterized in that, The foldable remelting frame for casting includes a pin, which is movably connected to the upper frame. The frame is provided with a hole, and the pin is used to be inserted into the hole.

3. The foldable remelting frame for casting according to claim 1, characterized in that, The skeleton and the side frame are detachably connected to the base frame.

4. The foldable remelting frame for casting according to claim 2, characterized in that, The foldable remelting frame for casting includes a fixing plate, a first pin, a second pin, and a third pin. The fixing plate is connected to the base frame. The first pin is connected to the bottom end of the skeleton and the fixing plate. The second pin is connected to the bottom end of the side frame and the fixing plate. The third pin is connected to the top end of the skeleton and the top end of the side frame.

5. The foldable remelting frame for casting according to claim 1, characterized in that, The baffle on the upper shelf is equipped with a magnet, and the baffle is detachably connected to the upper shelf via the magnet.

6. The foldable remelting frame for casting according to claim 1, characterized in that, The chassis includes multiple crossbars, multiple longitudinal bars, and a bracket. The multiple crossbars and multiple longitudinal bars are interconnected to form a chassis. The side frame and the end frame are respectively connected to the chassis. The bracket is connected to the side of the chassis away from the side frame. The bracket has a through hole for a forklift to pass through.

7. The foldable remelting frame for casting according to claim 1, characterized in that, The foldable recycle rack for casting also includes a baffle bar, which is connected to the side of the frame away from the receiving cavity and extends toward the upper frame. The baffle bar is used to abut against the side of the upper frame away from the receiving cavity.

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