Auxiliary structure for magnesium carbon brick demolding

Abstract

The utility model discloses a kind of auxiliary structure for magnesium-carbon brick stripping, it is related to magnesium-carbon brick stripping technical field, including lower mould, it is square frame, for forming magnesium-carbon brick;Accommodate frame, it is sleeved in the outside of lower mould, and can be lifted relative to lower mould;At least two layers of support unit, respectively set on the inner side upper section and middle section of accommodate frame, for corresponding support the upper section and middle section of magnesium-carbon brick in stripping process;Each layer of support unit includes four support arms.The utility model by setting at least two layers of support unit in accommodate frame inner side, and corresponding support the upper section and middle section of magnesium-carbon brick in stripping process, can provide multiple-point, segmented stable support for brick body, effectively prevent its fracture or corner damage due to dead weight or vibration in stripping process, significantly improve the yield of magnesium-carbon brick.

Description

Technical Field

[0001] This utility model relates to the field of magnesia-carbon brick demolding technology, specifically an auxiliary structure for demolding magnesia-carbon bricks. Background Technology

[0002] Magnesia-carbon bricks, as an important refractory material, are widely used in high-temperature industries such as steel and metallurgy. Their production process usually involves molding with molds, and after molding, the bricks are removed from the molds through a demolding process. In order to improve demolding efficiency and brick quality, the industry has gradually introduced various auxiliary demolding structures to achieve smooth and damage-free removal of the bricks.

[0003] However, in the traditional demolding process of magnesia-carbon bricks, due to the large weight of the bricks and their limited structural strength, coupled with problems such as uneven stress, insufficient support, or unstable guidance during demolding, the bricks are prone to cracking, edge damage, or even overall breakage during demolding. In particular, if the machine vibrates during the brick's ascent, the brick may deflect. At this time, the brick has not been completely ejected, and its bottom is prone to contact with the lower mold during the deflection process, resulting in the brick's sides being scratched, squeezed, or even damaged. Therefore, an auxiliary structure for demolding magnesia-carbon bricks is needed to solve the existing shortcomings. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide an auxiliary structure for demolding magnesia-carbon bricks. By setting at least two layers of support units inside the receiving frame and correspondingly supporting the upper and middle sections of the magnesia-carbon bricks during the demolding process, it can provide multi-point and segmented stable support for the bricks, effectively preventing them from breaking or being damaged at the edges and corners due to their own weight or vibration during the demolding process, and significantly improving the yield of magnesia-carbon bricks.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] An auxiliary structure for demolding magnesia-carbon bricks, comprising:

[0009] The lower mold, which is square in shape, is used to form magnesia-carbon bricks;

[0010] A receiving frame is fitted outside the lower mold and can be raised and lowered relative to the lower mold;

[0011] At least two support units are respectively disposed on the upper and middle sections of the inner side of the receiving frame, for corresponding support of the upper and middle sections of the magnesia-carbon brick during the demolding process;

[0012] Each layer of the support unit includes four support arms, which are respectively disposed on the four sides of the receiving frame and can be driven to extend or retract toward or away from the magnesia-carbon bricks.

[0013] A lifting mechanism is used to drive the accommodating frame and the magnesium carbon bricks in the lower mold to rise synchronously to achieve demolding.

[0014] Furthermore, at least one guide rod is fixedly connected to the back side of each support arm, and the interior of the frame wall of the receiving frame is constructed with an oil channel adapted to the guide rod. The oil channel is used to drive the guide rod and the support arm forward or backward when pressurized oil is introduced, and at the same time provides guidance for the extension and retraction movement of the guide rod.

[0015] Furthermore, a piston block is provided at the end of the guide rod. The piston block is sealed to the inner wall of the oil channel, dividing the oil channel into a front chamber and a rear chamber. By introducing pressurized oil into the front chamber or the rear chamber, the support arm is driven to extend or retract.

[0016] Furthermore, the support unit has two layers, namely a first layer support unit and a second layer support unit. The first layer support unit is located in the upper section of the receiving frame and is used to support the upper section of the magnesia-carbon brick; the second layer support unit is located in the middle section of the receiving frame and is used to support the middle section of the magnesia-carbon brick.

[0017] Furthermore, the four support arms of the same layer support unit are configured to extend synchronously and abut against the side of the magnesia-carbon brick through hydraulic parallel connection, so as to achieve balanced support for the magnesia-carbon brick.

[0018] Furthermore, it also includes a support frame, which is fixedly connected to the outer bottom end of the lower mold, and the receiving frame is located on top of the support frame.

[0019] Furthermore, L-shaped guide rods are fixedly connected to the four corners of the top of the support frame, and guide holes adapted to the L-shaped guide rods are constructed inside the four corners of the receiving frame to provide guidance when the receiving frame is raised and lowered.

[0020] Furthermore, the lifting mechanism includes four hydraulic cylinders, which are respectively fixed on the four sides of the bottom of the support frame, and the piston rod ends of the hydraulic cylinders are respectively fixedly connected to the bottom of the receiving frame. The four hydraulic cylinders are connected by a hydraulic synchronization valve and are configured to synchronously drive the receiving frame to lift and lower smoothly, so as to prevent the receiving frame from tilting during the lifting and lowering process.

[0021] 3. Beneficial Effects

[0022] Compared with existing technologies, the advantages of this utility model are:

[0023] I. This utility model provides multi-point, segmented stable support for the magnesia-carbon brick by setting at least two layers of support units inside the receiving frame and correspondingly supporting the upper and middle sections of the magnesia-carbon brick during the demolding process. This effectively prevents the brick from breaking or being damaged at the edges and corners due to its own weight or vibration during the demolding process, and significantly improves the yield of magnesia-carbon bricks.

[0024] Second, this utility model ensures that the four support arms of the same layer support unit are connected by parallel oil circuits and configured to extend and retract synchronously, so as to ensure that the four sides of the magnesia-carbon brick are subjected to uniform force during demolding. This avoids brick displacement, stress concentration or local pressure loss caused by single-point force or uneven force, and ensures the stability of the demolding process and the integrity of the brick.

[0025] Third, this utility model uses a hydraulic synchronization valve to precisely control the oil flow of the four lifting hydraulic cylinders, ensuring the synchronous and stable lifting of the housing frame and its supporting unit. This effectively prevents problems such as tilting of the housing frame, slippage of magnesia-carbon bricks, or poor contact with the support arm caused by asynchronous lifting, thus improving the safety and reliability of demolding operations. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0028] Figure 3 This is a schematic diagram of the cross-sectional structure of the receiving frame of this utility model;

[0029] Figure 4 This is a schematic diagram of the inverted structure of this utility model.

[0030] In the diagram: 1. Lower mold; 2. Receiving frame; 3. Support arm; 4. Guide rod; 5. Oil channel; 6. Piston block; 7. Support frame; 8. Guide rod; 9. Guide hole; 10. Hydraulic cylinder. Detailed Implementation

[0031] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. 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.

[0032] like Figure 1-4As shown, this utility model provides a technical solution: an auxiliary structure for demolding magnesia-carbon bricks. This structure aims to solve the problems of brick cracking and edge damage caused by uneven force during the demolding process of traditional magnesia-carbon bricks, thereby improving the yield and production efficiency of magnesia-carbon bricks.

[0033] The lower mold 1 is square-shaped and is the core component for molding magnesia-carbon bricks. The shape and size of its internal cavity determine the final shape of the molded magnesia-carbon brick. After pressing and molding, the magnesia-carbon brick is located inside the lower mold 1 and needs to be removed from above by external force. The receiving frame 2 is a frame structure located outside the lower mold 1. Its inner contour matches the outer contour of the lower mold 1 and leaves an appropriate gap to ensure that the receiving frame 2 can move smoothly up and down relative to the lower mold 1. The main function of the receiving frame 2 is to support the support unit and, driven by the lifting mechanism, move the support unit and the magnesia-carbon brick together to achieve demolding.

[0034] To provide stable and reliable support for the magnesia-carbon bricks during demolding and prevent them from breaking due to their own weight or minor vibrations, this invention provides at least two layers of support units on the inner side of the receiving frame 2. In this embodiment, two layers are preferred, respectively located on the upper and middle sections of the inner side of the receiving frame 2, to support the upper and middle sections of the magnesia-carbon bricks during demolding. Each support unit includes four support arms 3, respectively located on the four sides of the receiving frame 2. Each support arm 3 is strip-shaped, with its front end serving as a support surface for contacting the sidewall of the magnesia-carbon brick. A pair of guide rods 4 are fixedly connected to the back side of each support arm 3. The inner wall of the receiving frame 2 is constructed with an oil channel 5 adapted to the guide rods 4. This oil channel 5 serves both guiding and driving functions. A piston block 6 is provided inside the oil channel 5, and the piston block 6 is fixedly connected to the guide rods 4, thereby converting the pressure of the oil into linear motion of the guide rods 4 and the support arms 3.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, the oil channel 5 has two oil ports (not shown in the figure), located on both sides of the piston block 6, forming a front chamber and a rear chamber. When the support arm 3 needs to extend, high-pressure oil is injected into the rear chamber, while oil is discharged from the front chamber. The piston block 6 pushes the guide rod 4 and the support arm 3 outward until the front end face of the support arm 3 is in close contact with the side wall of the magnesia-carbon brick, providing support force. When the support arm 3 needs to retract, high-pressure oil is injected into the front chamber, while oil is discharged from the rear chamber. The piston block 6 pulls the guide rod 4 and the support arm 3 inward to prepare for the next demolding operation. In this embodiment, the four support arms 3 of the same layer support unit are connected by parallel oil circuits and configured to extend and retract synchronously to ensure that the four sides of the magnesia-carbon brick are subjected to uniform force during demolding, avoiding displacement or stress concentration due to uneven force.

[0036] like Figure 1 and Figure 4 As shown, the lifting mechanism is used to drive the receiving frame 2 and its supporting unit to rise and fall as a whole. It is the core component for separating the magnesia-carbon brick from the lower mold 1 and completing the demolding. In this embodiment, the lifting mechanism includes four hydraulic cylinders 10, which are fixed to the four sides of the bottom of the supporting frame 7. The cylinder body of each hydraulic cylinder 10 is rigidly connected to the supporting frame 7, and the end of its piston rod extends upward and is fixedly connected to the bottom of the receiving frame 2. When demolding is required, the piston rods of the four hydraulic cylinders 10 extend upward synchronously, pushing the receiving frame 2 together with the supporting unit that has extended and supported the magnesia-carbon brick and the magnesia-carbon brick itself to rise smoothly. The height of the rise is slightly greater than the height of the magnesia-carbon brick to ensure that the magnesia-carbon brick is completely separated from the lower mold 1, which is convenient for subsequent gripping or transfer. After the magnesia-carbon brick is removed, the piston rods of the four hydraulic cylinders 10 retract synchronously, driving the receiving frame 2 to fall to the initial position, preparing for the next demolding operation.

[0037] In particular, in order to ensure the absolute stability of the housing frame 2 during the lifting process and prevent tilting due to uneven force, which could lead to poor contact or even slippage between the magnesia-carbon brick and the support arm 3, the four hydraulic cylinders 10 in this embodiment are connected by a hydraulic synchronization valve. This synchronization valve can precisely control the flow rate of oil into each hydraulic cylinder 10, ensuring that the extension and retraction speeds of the four piston rods are completely consistent, thereby achieving stable and synchronous lifting of the housing frame 2.

[0038] The support frame 7 serves as the installation and support base for the entire auxiliary structure. It is typically fixed to the press workbench or the ground. It not only provides a stable mounting base for the lifting mechanism but also integrates a guiding function. Specifically, the four corners of the support frame 7 have guide holes 9 inside. At the same time, the four corners of the receiving frame 2 are fixedly connected to L-shaped guide rods 8 that cooperate with it. During the lifting and lowering process of the receiving frame 2, the L-shaped guide rods 8 slide within the guide holes 9 of the support frame 7, providing precise guidance for the receiving frame 2 and effectively preventing its twisting and shaking during the lifting and lowering process, further ensuring the stability and reliability of the demolding process.

[0039] Working Principle: Initially, the magnesia-carbon brick is pressed and formed in the lower mold 1, and the receiving frame 2 is at its lowest point. The upper and middle support arms 3 inside the frame are retracted and not in contact with the magnesia-carbon brick. Subsequently, the magnesia-carbon brick is lifted upwards by the top plate at its bottom. Simultaneously, the four hydraulic cylinders 10 of the lifting mechanism are activated. Controlled by the hydraulic synchronization valve, the four piston rods extend upwards synchronously and smoothly, pushing the receiving frame 2 upwards along with the magnesia-carbon brick. When the upper section of the magnesia-carbon brick is fully exposed above the lower mold 1, the hydraulic system is activated, injecting high-pressure oil into the rear cavity of the oil channel 5 of the first-layer support unit. This drives the four upper support arms 3 of the same layer to extend synchronously until their front ends are tightly attached to the upper sidewall of the magnesia-carbon brick, providing upper support. As the magnesia-carbon brick continues to rise, the middle support arm 3 extends accordingly, attaching to the middle sidewall of the magnesia-carbon brick, forming stable middle support, until the magnesia-carbon brick is completely detached from the lower mold 1. Afterwards, control the eight support arms 3 to retract and reset synchronously, and then drive the receiving frame 2 to descend to the initial position. At this point, the magnesium carbon brick can be safely removed, completing the entire demolding process.

[0040] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. An auxiliary structure for demolding of magnesia carbon brick, characterized by, include: The lower mold (1) is square-shaped and used to form magnesia-carbon bricks; The receiving frame (2) is fitted outside the lower mold (1) and can be raised and lowered relative to the lower mold (1); At least two support units are respectively disposed on the upper and middle sections of the inner side of the receiving frame (2) to support the upper and middle sections of the magnesia-carbon brick during the demolding process; Each layer of the support unit includes four support arms (3), which are respectively disposed on the four sides of the receiving frame (2) and can be driven to extend or retract toward or away from the magnesium carbon brick; The lifting mechanism is used to drive the magnesium carbon bricks in the receiving frame (2) and the lower mold (1) to rise synchronously to achieve demolding.

2. The auxiliary structure of claim 1, wherein, At least one guide rod (4) is fixedly connected to the back side of each of the support arms (3). The inner wall of the receiving frame (2) is constructed with an oil channel (5) adapted to the guide rod (4). The oil channel (5) is used to drive the guide rod (4) and the support arm (3) forward or backward when pressurized oil is introduced, and at the same time provides guidance for the extension and retraction of the guide rod (4).

3. The auxiliary structure of claim 2, wherein, The end of the guide rod (4) is provided with a piston block (6), which is sealed to the inner wall of the oil channel (5) to divide the oil channel (5) into a front chamber and a rear chamber. By introducing pressurized oil into the front chamber or the rear chamber, the support arm (3) is driven to extend or retract.

4. The auxiliary structure of claim 1, wherein, The support unit consists of two layers, namely a first layer support unit and a second layer support unit. The first layer support unit is located in the upper section of the receiving frame (2) and is used to support the upper section of the magnesia-carbon brick. The second layer support unit is located in the middle section of the receiving frame (2) and is used to support the middle section of the magnesia-carbon brick.

5. The auxiliary structure of claim 3, wherein, The four support arms (3) of the same layer support unit are configured to extend synchronously and abut against the side of the magnesia-carbon brick through hydraulic parallel connection, so as to achieve balanced support for the magnesia-carbon brick.

6. The auxiliary structure of claim 1, wherein It also includes a support frame (7), which is fixedly connected to the outer bottom of the lower mold (1), and the receiving frame (2) is located on top of the support frame (7).

7. The auxiliary structure of claim 6, wherein, The support frame (7) has L-shaped guide rods (8) fixedly connected to the four corners at the top. The four corners of the receiving frame (2) have guide holes (9) that are compatible with the L-shaped guide rods (8) to provide guidance when the receiving frame (2) is raised or lowered.

8. The auxiliary structure of claim 6, wherein, The lifting mechanism includes four hydraulic cylinders (10), which are fixed on the four sides of the bottom of the support frame (7), and the piston rod ends of the hydraulic cylinders (10) are fixedly connected to the bottom of the receiving frame (2). The four hydraulic cylinders (10) are connected by a hydraulic synchronization valve and are configured to drive the receiving frame (2) to lift smoothly in a synchronized manner to prevent the receiving frame (2) from tilting during the lifting process.

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